JP6464915B2 - Elevator counterweight reinforcing device, and elevator counterweight equipped with the reinforcing device - Google Patents

Description

  The present invention relates to an elevator balancing weight reinforcing device and an elevator balancing weight, and more particularly, to a weight frame reinforcing technique.

  The counterweight is composed of a weight frame and a plurality of weight pieces housed in the weight frame. The weight frame includes a pair of vertical frames, an upper frame that connects upper portions of the vertical frames, and a lower frame that connects lower portions.

  The vertical frame is generally made of grooved steel having a U-shaped cross section, and the pair of vertical frames are connected by an upper frame and a lower frame with the U-shaped openings facing each other. Yes.

  Each of the plurality of weight pieces is made of a strip-shaped steel material, and generally has both end portions narrower than the other portions so as to fit into the opening. Each of the plurality of weight pieces is stacked and stored in the weight frame in a state in which both end portions are fitted in the corresponding opening portions of the vertical frame. As a result, the weight piece is not easily detached from the weight frame.

  By the way, in response to an example of damage caused by an elevator due to a major earthquake that occurred recently, an earthquake-related notification regarding elevators was established in 2013 for the purpose of strengthening earthquake resistance (2013 Ministry of Land, Infrastructure, Transport and Tourism notification), April 2014 It is enforced on the 1st. Although this notification is wide-ranging, with regard to counterweights, No. 1048 requires that “when the weight frame is subjected to seismic force, the weight piece does not come off the weight frame due to the deflection that occurs in the vertical frame”. ing.

  Elevators newly installed after the effective date of the notice are required to satisfy the above requirements. On the other hand, for elevators installed before the effective date, although there is no legal requirement to satisfy the above requirements, the earthquake resistance against counterweights is based on requests from customers who wish to strengthen the earthquake resistance. There is a request for reinforcement.

  In order to satisfy the requirements indicated in the above notification, the weight frame may be reinforced to prevent the pair of vertical frames from bulging outward.

  Patent Literature 1 and Patent Literature 2 disclose techniques that can provide such a reinforcing treatment for a counterweight in an existing elevator.

  In Patent Document 1, both front ends of a pair of vertical frames are attached by bolts to connect the pair of vertical frames on the front side of the weight frame, and the front side connection body made of a band-shaped metal plate, the front side connection. Both ends of the body are attached by bolts to the corresponding vertical frames in contact with the corresponding vertical frames, and both ends are attached to the pair of attachments by bolts, and the rear side of the weight frame An earthquake-resistant device (reinforcing instrument) including a rear-side connecting body made of a band-like metal plate for connecting a pair of mounting brackets is disclosed (claim 1, FIG. 2, FIG. 4, etc. of Patent Document 1).

  In Patent Document 2, a rear-side connection body made of a band-shaped metal plate and bent in a “U” shape so that each end portion has a corresponding vertical frame, and arranged on the front side of the weight frame An earthquake-resistant device (reinforcing instrument) comprising a front-side coupling body made of a band-shaped metal plate and having both ends connected to the front surfaces of a pair of vertical frames together with both ends of the rear-side coupling body is disclosed. (Claim 1, Patent 3, FIG. 5, etc. of Patent Document 2).

  And both the patent document 1 and the patent document 2 are being fixed to the intermediate part in the up-down direction of a vertical frame (FIG. 1 of patent document 1, FIG. 2 of patent document 2). .

  According to the reinforcing instrument described in Patent Document 1, a front-side connection body and a rear-side connection body that connect a pair of attachments provided in contact with a pair of vertical frames are described in Patent Document 2. According to the reinforcing device, a rear connection body provided to hold a pair of vertical frames at both ends bent in a “U” shape, and a front connection body that connects both ends of the rear connection body; However, the middle portions in the vertical direction of the pair of vertical frames are mutually restrained, and the pair of vertical frames are prevented from bending so as to bulge outward. As a result, it is possible to prevent the weight piece from coming off the weight frame due to the deflection generated in the vertical frame.

  However, for reasons of manufacturing the weight frame, there is variation in the distance between the pair of vertical frames (the distance between the pair of vertical frames in the horizontal direction). For this reason, if the said space | interval is too large, it will become difficult to attach the earthquake-proof apparatus of patent documents 1, 2 to the existing counterweight (especially attachment of a back side coupling body will become difficult). On the other hand, if the distance is too small, a gap is generated between the mounting bracket and the vertical frame in Patent Document 1 and between the both ends of the rear connector and the vertical frame in Patent Document 2, The above-described constraint on the vertical frame becomes insufficient, and the reinforcing function of the weight frame is impaired.

  On the other hand, Patent Document 3 discloses a reinforcing instrument configured to wind a wire rope around an intermediate portion of a pair of vertical frames (FIGS. 1 and 2 of Patent Document 3). Four protective tubes (paragraph [0030], FIG. 2 of Patent Document 3) made of an industrial vinyl hose cut to a predetermined length are extrapolated on the wire rope. A fastening fitting is fixed to one end of the wire rope, and one end of a stud bolt is connected to the other end. The fastening bracket is provided with an insertion hole for the stud bolt. The reinforcing device having the above-described configuration is formed by winding the wire rope so that each of the protective tubes is positioned at the four corners of a pair of vertical frames, and then, in addition to the stud bolt, By inserting the end portion and tightening the nut screwed from the tip of the other end portion, the weight frame is fastened with the wire rope and attached to the existing counterweight.

  According to the reinforcing instrument of Patent Document 3, it is possible to attach the four protective tubes in a state where they are in contact with the vertical frame (in a state of being pressed against each other) even if the distance between the pair of vertical frames is too large or too small. It is possible to suppress bending of the pair of vertical frames so as to bulge outward.

Japanese Patent No. 4799730 (JP 2002-167144 A) JP 2008-143655 A JP-A-10-67478 JP 2001-253667 A Japanese Patent Laid-Open No. 11-60113 Japanese Patent No. 2774902 (Japanese Patent Laid-Open No. 6-1568)

  However, in the reinforcing device described in Patent Document 3, the wire rope is elongated due to aging in nature, and the tightening may be loosened. In this case, the reinforcing device slides downward. In order to prevent this slip-off, in Patent Document 3, a fixing bracket is fixed to a vertical frame portion above the portion of the vertical frame around which the wire rope is wound, and the wire rope is attached with a binding band attached to the fixing bracket. I try to hang it. Although this can prevent the reinforcing instrument from slipping down, the reinforcement of the weight frame requires an essentially unnecessary member and requires labor for attaching the member.

  In view of the above-described problems, the present invention can be attached in a state where the reinforcing function of the weight frame can be exhibited even if there is variation in the distance between the pair of vertical frames, and effectively maintains the attached position. It is a first object to provide a reinforcing device for an elevator counterweight that can be used.

  A second object of the present invention is to provide an elevator counterweight reinforced with such a reinforcing device.

  In order to achieve the first object, in the elevator balancing weight reinforcing device according to the present invention, the upper portions of a pair of vertical frames of the first vertical frame and the second vertical frame are connected by an upper frame. A plurality of weight pieces are stacked and stored in a weight frame formed by connecting lower portions to each other with a lower frame. The reinforcing device is attached to a counterweight of an elevator. A first hook that is hooked toward the second vertical frame; a second hook that is hooked toward the second vertical frame toward the first vertical frame; and the plurality of weight pieces. Inserted between two weight pieces adjacent to each other in the vertical direction, and inserted between the two weight pieces, the first insertion tool connected to the first hooking tool, A second insertion tool connected to the second hook, the first insertion tool connected to the first hook and the second A fastener for fastening the second insertion tool to which the hook is connected in a state where the first hook and the second hook are attracted in a direction in which the first hook and the second hook are attracted to each other; Features.

  In addition, the first vertical frame and the second vertical frame each have a U-shaped cross section, and the upper frame and the lower frame have a posture in which the U-shaped openings face each other. The first hook is connected to the first hook-like member hooked on the first corner of the first vertical frame and the second hook hooked to the second corner. The two hook-shaped members are connected to the first insertion tool, and the second hooking tool is hooked to the first corner of the U-shape of the second vertical frame. It comprises a first hook-shaped member to be hung and a second hook-shaped member hooked on the second corner portion, and both the hook-shaped members are connected to the second insertion tool.

  Furthermore, the counterweight is supported by a pair of guide rails installed on the opposite sides of the U-shaped portions of the first vertical frame and the second vertical frame, and is raised and lowered. Between the first hook-shaped member and the second hook-shaped member constituting the first hook, which is a counterweight and is hooked on the first vertical frame, The first hook-shaped member constituting the second hooking tool, which has a gap so as not to interfere with the guide rail corresponding to the first vertical frame and is hooked on the second vertical frame, and the second hook A gap is formed between the second hook-shaped member and the second rail so as not to interfere with the guide rail corresponding to the second vertical frame.

  In order to achieve the second object, the elevator counterweight according to the present invention is configured such that the upper portions of a pair of vertical frames of the first vertical frame and the second vertical frame are connected to each other by the upper frame. An elevator balancing weight in which a plurality of weight pieces are stacked and stored in a weight frame connected by a lower frame, and the weight frame is reinforced by mounting the above-described balancing weight reinforcing device. It is characterized by being.

  According to the elevator balancing weight reinforcing device according to the present invention, the first insertion tool connected to the first hook that is hooked to the first vertical frame toward the second vertical frame; The second insertion tool connected to the second vertical frame and the second hook that is hooked toward the first vertical frame includes the first hook and the second hook. Are fastened in a state of being attracted to each other. As a result, even if there is a variation in the distance between the first vertical frame and the second vertical frame, the first hook is in the first vertical frame, the second hook is in the second vertical frame, Each can be attached in a state where the reinforcing function of the weight frame can be exhibited.

  In addition, since the first insertion tool and the second insertion tool are inserted between two weight pieces adjacent in the vertical direction, the entire counterweight reinforcing instrument is attached. The attached position is effectively maintained without sliding down below the position.

  Moreover, according to the counterweight of the elevator which concerns on this invention, upper part of a pair of vertical frame of a 1st vertical frame and a 2nd vertical frame is connected with an upper frame, and lower parts are connected with a lower frame. A balance weight of an elevator in which a plurality of weight pieces are stacked and stored in a weight frame, and the weight frame reinforcing device is mounted and the weight frame is reinforced, The same effect is produced.

It is a front view which shows an example of the existing counterweight used as the mounting | wearing object of the reinforcing tool for counterweight which concerns on embodiment. In FIG. 1, it is sectional drawing cut | disconnected along the AA line. FIG. 3 is a plan view showing components of the counterweight reinforcing device according to the first embodiment. It is a perspective view which shows the 1st hooking tool which consists of a 1st insertion tool and a 1st and 2nd hook-shaped member among the structural members of the said balance weight reinforcement instrument. It is a front view which shows the counterweight with which the reinforcement tool for counterweights which concerns on Embodiment 1 was mounted | worn, and the weight frame was reinforced. FIG. 5A is a plan view showing only the counterweight reinforcing device and the vertical frame constituting the weight frame, and FIG. 5B is a front view thereof. It is a figure for demonstrating one process in the mounting | wearing operation | work to the said balance weight of the said balance weight reinforcement instrument. In the counterweight in which the counterweight reinforcement device according to the second embodiment is mounted and the weight frame is reinforced, (a) shows only the counterweight reinforcing device and the vertical frame constituting the weight frame. It is a top view, (b) is a part of front view. It is a perspective view of the spacer which is a structural member of the reinforcing tool for counterweights concerning Embodiment 2. FIG. (A) is a front view of a hooking tool, (b) is a perspective view of an insertion tool, and (c) is a balance tool of the counterweight according to the third embodiment. In a state of being mounted on a weight, a part of a plan view showing only one guide rail and a vertical frame that constitutes the counterweight reinforcing tool and the weight frame is shown.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Embodiment 1>
[Balance weight to be reinforced]
Prior to the description of the elevator balancing weight reinforcing device 10 (hereinafter simply referred to as “reinforcing device 10”) according to the first embodiment, an existing installation to be reinforced by the reinforcing device 10 (FIGS. 3 to 4). An example of the counterweight will be described with reference to FIGS.

  The counterweight 300 is a weight used in a traction type elevator. In the traction type, a car (not shown) and a counterweight 300 are connected to each other by a wire rope 302, and the wire rope 302 is attached to a sheave (not shown) of a hoist installed at a midway point of the wire rope 302. A method of winding and moving the wire rope 302 by rotating the sheave forward or backward with an electric motor (not shown) to raise and lower the car and the counterweight 300 in opposite directions in the hoistway (not shown). It is.

  The counterweight 300 is provided between a pair of guide rails 304 and 306 laid in the vertical direction in the hoistway. The counterweight 300 has a basic configuration in which a plurality of (in this example, 16) weight pieces 310 are stacked in a weight frame 308 that is generally square. The plurality of weight pieces 310 are all the same, but if it is necessary to distinguish them, the lower case letters “a, b, c,...

  The weight frame 308 is formed by connecting the upper portions of a pair of vertical frames 312 and 314 of the first vertical frame 312 and the second vertical frame 314 with an upper frame 316 and connecting the lower portions with a lower frame 318.

  For each of the first vertical frame 312 and the second vertical frame 314, a grooved steel having a U-shaped cross section is used. As shown in FIG. 2, the U-shaped opening 312a is used. , 314a are connected to each other by an upper frame 316 and a lower frame 318 in a posture in which they face each other.

  The lower frame 318 includes a pair of plate members 318a and 318b using rectangular steel plates. Both end portions of the plate members 318a and 318b are joined to the corresponding vertical frames 312 and 314, respectively. The upper frame 316 also includes a pair of plate members 318a using only rectangular steel plates (only one plate member 318a appears in FIG. 1), and both end portions of the pair of plate members 318a correspond to each other. It is joined to the vertical frames 312 and 314. The said joining is made | formed by welding and bolting (all are not shown).

  Each of the weight pieces 310 is made of a strip-shaped steel material and is fitted to the openings 312a and 314a of the first and second vertical frames 312 and 314, as shown in FIG. Also have narrow portions 3101 and 3102 formed to be narrow. Here, a portion wider than the narrow portions 3101 and 3102 between the narrow portions 3101 and 3102 is referred to as a wide portion 3103.

  Each of the plurality of weight pieces 310 is stacked and stored in the weight frame 308 with the narrow portions 3101 and 3102 fitted in the openings 312a and 314a, respectively. In this case, the lowermost weight piece 310g (FIG. 1) is received by the plate members 318a and 318b with the wide portion 3103 abutting against the upper ends of the plate members 318a and 318b constituting the lower frame 318.

  The weight piece 310 has two through holes 3104 and 3105 opened in the thickness direction. Through bolts 320 and 322 are inserted into the through holes 3104 and 3105, respectively.

  Two nuts 326 and 328 are screwed into the upper end portions of the through bolts 320 and 322 inserted into the through holes 3104 and 3105 of the plurality of weight pieces 310 and penetrating all of the plurality of weight pieces 310, respectively. ing. Flat washers 330 and 332 are fitted into through bolts 320 and 322 between the nuts 326 and 328 and the upper surface of the uppermost weight piece 310a.

  The lower end portions of the through bolts 320 and 322 are two pieces provided on the attachment plate 334 joined to the lower end portions of the two plate members 318a and 318b constituting the lower frame 318 so as to bridge between the lower end portions. The two nuts 336 and 338 are fastened to the through bolts 320 and 322 protruding from the mounting plate 334, respectively.

  Guide shoes 340 and 342 that are in sliding contact with the guide rail 304 are provided at the upper and lower ends of the first vertical frame 312, and guides that are in sliding contact with the guide rail 306 are provided at the upper and lower ends of the second vertical frame 314. Shoes 344 and 346 are provided.

  The upper frame 316 and the wire rope 302 are connected via known connecting means 350 including a shackle rod 348 and the like, and the counterweight 300 is suspended by the wire rope 302.

  In the counterweight 300 having the above-described configuration, the guide shoes 340 and 342 and the guide shoes 344 and 346 are guided by the guide rails 304 and 306, respectively, and move up and down in a hoistway (not shown).

  Here, from the viewpoint of space saving in the hoistway, in order to effectively use the space between the guide rail 304 and the guide rail 306, the first and second vertical frames of the guide rails 304 and 306 and the counterweight 300 are used. 312 and 314 are arranged as close as possible so as to earn as much as possible the plane area of the weight piece 310 provided between the vertical frames 312 and 341. For example, in this example, the gap G1 between the tip of the guide rail 304 and the first vertical frame 312 and the gap G2 between the tip of the guide rail 306 and the second vertical frame 314 shown in FIG. is there. Generally, it is considered that G1 and G2 are set to around 10 mm.

  Also, in the counterweight 300, when the car (not shown) and the hoistway pass each other, if the side facing the car is the front and the opposite side is the back, the back and the hoistway wall are very It is often close. For example, the gap between the back surface and the hoistway wall may be so close that the arm cannot enter. In FIGS. 2, 6, 7, and 8, the arrow indicating the front side is denoted by “F” and the arrow indicating the back side is denoted by “R” to distinguish the front from the back. And

[Structure of reinforcing equipment]
The reinforcing device 10 for reinforcing the weight frame 308 of the counterweight 300 having the above configuration will be described with reference to FIGS. 3 and 4.

  As shown in FIG. 3, the reinforcing device 10 includes a first insertion tool 110, a second insertion tool 210, a first hook 112, and a second hook 212.

  The first insertion tool 110 and the second insertion tool 210, and the first hook 112 and the second hook 212 have the same configuration. Therefore, the first insertion tool 110 and the first hooking tool 112 will be described as a representative. In this case, the constituent parts related to the first insertion tool 110 are given the hundreds of reference numerals, the constituent parts related to the second insertion tool 210 are assigned the reference numerals of the two hundreds, common to both. The last two digits of the reference numerals attached to the constituent parts to be used are the same numbers, and the description of the configuration of the second insertion tool 210 is omitted. Further, the constituent parts relating to the first hook 112 are given the hundreds or thousands of signs, the constituent parts relating to the second hook 212 are given the signs of the hundreds or two thousands, The lower two digits or the lower three digits of the reference numerals attached to the components common to both are the same numbers, and the description of the configuration of the second hooking tool 212 is omitted.

  The first insertion tool 110 has a base plate 118 having a rectangular shape. Side plates 120 and 122 are joined to each of the side surfaces including the long side of the base plate 118. This joining is performed by fillet welding (a welding bead is not shown).

  In addition, a first rib plate 124 and a second rib plate 126 are erected on the upper surface of the base plate 118 so as to be spaced in the length direction and parallel to the width direction. The first rib plate 124 and the second rib plate 126 are joined to the base plate 118 and the side plates 120 and 122 by fillet welding (the weld bead is not shown).

  The base plate 118 is provided with a through-bolt insertion hole 128 having a long oval shape in the length direction. The opening position of the through-bolt insertion hole 128 is a position near the second rib plate 126 between the first rib plate 124 and the second rib plate 126.

  The first rib plate 124 has two bolt insertion holes 130 and 132 arranged in the width direction of the base plate 118.

  In each of the side plates 120 and 122, screw holes 134, 136, 138, and 140 penetrating in the thickness direction are formed on both sides of the second rib plate 126.

  The width Wk1 (FIG. 3) of the first insertion tool 110 is set to the same size as the width Wf1 (FIG. 2) of the first vertical frame 312.

  Next, the first hooking tool 112 will be described. The first hook 112 includes a first hook-shaped member 114 and a second hook-shaped member 116.

  The first bowl-shaped member 114 has a main body 1141 formed by bending one end of a strip-shaped steel plate into an L shape (perpendicular). In the main body 1141, a portion having a shorter distance to one end portion in the longitudinal direction with respect to the bent portion is referred to as a hook portion 1141A, and a portion having a longer distance is referred to as a connecting portion 1141B.

  A reinforcing rib 1143 extending in the longitudinal direction is joined to a position closer to the lower side in the width direction of the side surface of the connecting portion 1141B by fillet welding (a weld bead is not shown). In addition, two bolt insertion holes 1141C and 1141D are opened in the connecting portion 1141B, arranged in the longitudinal direction above the reinforcing rib 1143.

  A hook 1145 made of square steel is joined to the side surface of the hook portion 1141A as shown in FIG. The joining is spot-formed by fillet welding (a weld bead is not shown) at both ends of the metal backing 1145.

  The second hook-shaped member 116 has the same configuration as the first hook-shaped member 114. That is, one end of a strip-shaped steel plate has a main body 1161 bent in an L shape (perpendicular), a reinforcing rib 1163 is joined to the side surface of the connecting portion 1161B, and above the reinforcing rib 1163 Two bolt insertion holes 1161C and 1161D are opened. A stopper 1165 is joined to the side surface of the hook portion 1161A.

  The reinforcing instrument 10 also has four connection bolts 142 that are connection tools for connecting the first hook-shaped member 114 and the second hook-shaped member 116 and the first insertion tool 110. The connecting bolt 142 is a bolt with a spring washer. The outer diameter of the screw of the connecting bolt 142 and the diameter of the bolt insertion holes 1141C, 1141D, 1161C, 1161D are such that the connecting bolt 142 can be smoothly inserted into the bolt insertion holes 1141C,. The magnitude relationship 142 is set so as not to rattle.

  The reinforcing instrument 10 further includes two sets of fastening bolts 12, fastening nuts 14, and spring washers 16, which are fasteners for fastening the first insertion tool 110 and the second insertion tool 210. Each of the two fastening nuts 14 is connected to the first rib plate 124 in a state where the screw hole communicates with the bolt insertion holes 130 and 132 formed in the first rib plate 124 of the first insertion tool 110. It is joined by fillet welding (the welding bead is given the reference numeral “18”).

  As shown in FIG. 5, the reinforcing device 10 composed of the above-described constituent members is mounted so as to connect the first vertical frame 312 and the second vertical frame 314 in the weight frame 308 of the counterweight 300. 5, for the sake of convenience, the guide rails 304 and 306, the through bolts 320 and 322, the wire rope 302, the connecting means 350 including the shackle rod 348, the guide shoes 340, 342, 344, and 346 (FIG. 1) are shown. Is omitted.

  From the viewpoint of effectively suppressing the bending of the first and second vertical frames 312 and 314, the mounting position of the reinforcing instrument 10 in the vertical direction is as shown in the illustrated example. A central portion between the upper frame 316 and the lower frame 318 that connect the upper and lower portions of 314 is preferable.

  The relationship between the structural members of the reinforcing instrument 10 in a state where it is mounted on the counterweight 300 will be described with reference to FIG. In FIG. 6B, a part of the side plates 120 and 222 is cut away.

  The first hook-shaped member 114 is hooked toward the second vertical frame 314 on the first corner 312C1 in the U-shape of the first vertical frame 312 having a U-shaped cross section, and the second corner A second hook-shaped member 116 is hooked on 312C2 toward the second vertical frame 314. The first and second hook-shaped members 114 and 116 are hooked in such a manner that the contact plates 1145 and 1165 are in contact with the side surface 312b of the first vertical frame 312 opposite to the U-shaped opening 312a. It has been.

  The first and second hook-shaped members 114 and 116 (first hooking tool 112) hooked on the first vertical frame 312 and the first insertion tool 110 are connected by four connecting bolts 142. ing. That is, (a) bolt insertion holes 1141C and 1141D (FIGS. 3 and 4) provided in the first hook-like member 114 and screw holes 136 and 134 (formed in the side plate 120 of the first insertion tool 110) 3 and 4) are connected to each other, the two connecting bolts 142 are inserted into the bolt insertion holes 1141C and 1141D, respectively, and screwed into the screw holes 136 and 134, and (b) a second hook-shaped member. The bolt insertion holes 1161C and 1161D (FIGS. 3 and 4) opened in 116 and the screw holes 138 and 140 (FIGS. 3 and 4) formed in the side plate 122 of the first insertion tool 110 communicate with each other. Then, the two connecting bolts 142 are respectively inserted into the bolt insertion holes 1161C and 1161D and screwed into the screw holes 138 and 140, so that the first and second hook-shaped members 114 and 116 and the first insertion tool are inserted. 110 is continuous It is.

  A mode in which the first and second hook-shaped members 214 and 216 constituting the second hooking tool 212 are hooked on the second vertical frame 314 and connected to the second insertion tool 210 is as follows. Since it is the same as that of the above-mentioned 1st hooking tool 112 and the 1st insertion tool 110, it abbreviate | omits about the description.

  The first insertion tool 110 to which the first hooking tool 112 is connected and the second insertion tool 210 to which the second hooking tool 212 are connected are fastened by two sets of fastening bolts 12 and fastening nuts 14. Has been. That is, the two fastening bolts 12 fitted with the spring washers 16 are connected to the bolt insertion holes 230 and 232 (FIG. 3) provided in the first rib plate 224 and the bolt insertion holes 132 provided in the first rib plate 124. , 130 (FIGS. 3 and 4) and screwed into the corresponding fastening nuts 14 to fasten the first insertion tool 110 and the second insertion tool 210.

[Reinforcing device installation procedure]
A procedure for mounting the reinforcing device 10 having the above-described configuration on the existing counterweight 300 will be described.
First, the through bolts 320 and 322 are removed from the counterweight 300 in the state shown in FIG. 1 [first step].

  Next, one or a plurality of weight pieces 310 positioned above the planned mounting position of the reinforcing device 10 among the plurality of weight pieces 310 stacked (in this example, five weight pieces 310a to 310e). Is removed from the weight frame 308 [second step]. The weight pieces 310a to 310e are removed one by one from the uppermost weight piece 310a. The weight piece 310 is formed by lifting one end portion from the horizontal posture shown in FIG. 1 to an oblique posture, so that the weight piece 310 (for example, the weight piece 310a) to be removed is directly attached (for example, , And can be easily removed from the space existing between the weight piece 310b) and the upper frame 316.

  When all the weight pieces 310a to 310e to be removed are removed, the first insertion tool 110 (FIG. 3) is placed on the upper surface of the weight piece 310 (the weight piece 310f in this example) that is at the highest position at that time. Place [third step].

  The first hook-like member 114 and the second hook-like member 116 are connected to the placed first insertion tool 110 by the four connecting bolts 142 [fourth step]. As shown in FIG. 7, the first hook-shaped member 114 is applied to the side plate 120 of the first insertion tool 110 from the front F side, as indicated by a one-dot chain line, and bolt insertion holes 1141C and 1141D (FIG. 4). ) Are connected to the screw holes 136 and 134 (FIG. 4) of the side plate 120 by two connecting bolts 142. The second hook-shaped member 116 is applied to the side plate 122 of the first insertion tool 110 from the back surface R side, as shown by the alternate long and short dash line, and the bolt insertion holes 1161C and 1161D (FIG. 4) are respectively connected to the side plate 122. It connects with the two connection bolts 142 in the state connected to the screw holes 138 and 140 (FIG. 4). In this case, the back surface R of the counterweight 300 and the side wall of the hoistway (not shown) are close to each other. The hook-shaped member 116 and the first insertion tool 110 can be connected. In addition, the connection order of the 1st and 2nd hook-shaped members 114 and 116 with respect to the 1st insertion tool 110 may reverse said. In other words, the first hook-shaped member 114 may be connected after the second hook-shaped member 116 is connected. At this stage, the metal pads 1145 and 1165 (FIG. 6) do not necessarily need to be in contact with the side surface 312 b of the first vertical frame 312 as indicated by the one-dot chain line.

  As described above, the first hook 112 that is hooked on the first vertical frame 312 includes the first hook-like member 114 and the second hook-like member 116, and the first hook-like member 114 is attached to the first vertical frame 312 from the front F side of the counterweight 300, and the second bowl-shaped member 116 is attached from the rear R side. Accordingly, the first hook 112 can be attached (hanged) to the first vertical frame 312 without removing the counterweight 300 from the guide rails 304 and 306.

  Further, the first hook-shaped member 114 and the second hook-shaped member 116 are hooked by the first vertical frame 312 as shown by a one-dot chain line in FIG. A gap that prevents interference with the guide rail 304 (the tip thereof) is formed between the end portions on the side surface 312b, so that the lifting and lowering of the counterweight 300 is not hindered.

  The second insertion tool 210 and the first and second hook-shaped members 214 and 216 are also attached to the second vertical frame 314 in the same manner as the first insertion tool 110 described above. That is, the second insertion tool 210 is placed on the upper surface of the weight piece 310f [fifth step], and the first and second hook-like members 214 and 216 are placed on the placed second insertion tool 210. Are connected by four connecting bolts 242 [sixth step]. At this stage, the metal pads 2145 and 2165 (FIG. 6) do not necessarily need to be in contact with the side surface 314 b of the second vertical frame 314.

  Needless to say, the third and fourth steps and the fifth and sixth steps may be reversed. That is, the third and fourth steps may be performed after the fifth and sixth steps.

  The first and second hook-shaped members 114 and 116 and the first insertion tool 110 are connected, and the first and second hook-shaped members 214 and 216 and the second insertion tool 210 are connected. And [third to sixth steps], the first insertion tool 110 and the second insertion tool 210 are pulled together by hand so that they are close to each other. Thereby, the metal pads 1145 and 1165 and the metal pads 2145 and 2165 are surely brought into contact with the side surface 312b of the first vertical frame 312 and the side surface 314b of the second vertical frame 314, respectively (seventh step). .

  Then, the first insertion tool 110 and the second insertion tool 210 are fastened by the two sets of fastening bolts 12 and fastening nuts 14 [eighth step]. FIG. 6 shows the fastened state.

  In a state in which the stoppers 1145 and 1165 and the stoppers 2145 and 2165 are in contact with the side surface 312b of the first vertical frame 312 and the side surface 314b of the second vertical frame 314, respectively, [first step], There is a gap D1 between the insertion tool 110 and the second insertion tool 210, and the direction in which the distance D1 is reduced, that is, the first insertion tool 110 and the second insertion tool. The both insertion tools 110 and 210 are fastened in the direction in which the tool 210 is attracted to each other, and in other words, the direction in which the first hook 112 and the second hook 212 are attracted to each other. For this reason, even if there is variation in the distance between the first vertical frame 312 and the second vertical frame 314 (the distance between the vertical frames 312 and 314 in the horizontal direction), the first hook 112 (first and second hooks 112 and 314). The second hook-shaped members 114 and 116 and the second hook 212 (first and second hook-shaped members 214 and 216) are brought into close contact with the first vertical frame 312 and the second vertical frame 314, respectively. In this state, the first and second vertical frames 312 and 314 can be connected by the reinforcing device 10. Thereby, even if there exists the said variation, the reinforcement instrument 10 will be attached to the counterweight 300 in the state which can exhibit the reinforcement function of the weight frame 308. FIG.

  When the fastening of the first insertion tool 110 and the second insertion tool 210 by the two sets of the fastening bolts 12 and the fastening nuts 14 is completed, the weight pieces 310a to 310e removed in the second step are placed in the weight frame 308. Return [9th step]. The operation of returning the weight piece 310 to the weight frame 308 [9th step] is performed in the reverse procedure to the operation of removing the weight piece 310 from the weight frame 308 [second step]. That is, the weight that is to be returned to the weight frame 308 with respect to the weight piece 310 (for example, the weight piece 310d) at the top of the weight pieces 310 stacked in the weight frame 308 at that time. The piece 310 (for example, the weight piece 310c) is placed in a slanting posture, and after entering the space existing between the weight piece 310d and the upper frame 316, it is placed in a horizontal posture and stacked on the weight piece 310d. The weight pieces 310e are stacked on the reinforcing device 10.

  When all the weight pieces 310a to 310e are returned into the weight frame 308 [9th step], through bolts 320 and 322 are attached [10th step]. In this case, in the reinforcing instrument 10, the through bolts 320 and 322 are inserted into the through bolt insertion holes 128 and 228.

  The above-described first to tenth steps are performed, and the counterweight 300 becomes a counterweight formed by attaching the reinforcing device 10 and reinforcing the weight frame 308.

  As is apparent from the mounting procedure of the reinforcing instrument 10 described above to the existing counterweight 300, according to the reinforcing instrument 10 according to the present embodiment, the counterweight 300 is not removed from the guide rails 304 and 306, The reinforcing device 10 can be attached to the counterweight 300.

  In addition, drilling is not performed on the counterweight 300, and welding work or the like at the site where the counterweight 300 is installed does not occur.

  In the above-described embodiment, the first hook-shaped member 114 and the second hook-shaped member 116 are connected to the first insertion tool 110 by the connecting bolt 142 in the field ([fourth step]. ]) Any one of the first and second hook-shaped members 114 and 116 may be connected in advance (for example, at the manufacturing factory of the reinforcing device 10). That is, in the third step, the first insertion tool 110 to which the one hook-shaped member is connected is placed on the weight piece 310 that is at the uppermost position at that time.

  In this case, it is preferable that the second hook-shaped member 116 on the back surface R side, which is relatively difficult to connect with the connecting bolt 142, is connected to the first insertion tool 110 in advance. The connection is not limited to the bolt (connection bolt 142), and other connection means such as a rivet may be used. Alternatively, the second hook-shaped member 116 and the first insertion tool 110 may be connected in advance by welding. Furthermore, the second hook-shaped member 116 and the first insertion tool 110 may be integrally formed. For example, the second plate 312C2 of the first vertical frame 312 is formed by extending an end of the side plate 122 on the second rib plate 126 side and bending the tip of the extended portion into an L shape. This is realized by forming a portion to be hooked.

  One of the first and second hook-like members 214 and 216 may be connected to the second insertion tool 210 in advance in the case of the first insertion tool 110 described above. It is the same.

<Embodiment 2>
The elevator balancing weight reinforcing device 20 (hereinafter simply referred to as “reinforcing device 20”) according to the second embodiment is provided between the first rib plate 124 and the second rib plate 126 as shown in FIG. The spacers 22 and 24 are sandwiched. Except for the addition of the spacers 22 and 24, the reinforcing device 20 of the second embodiment has the same configuration as the reinforcing device 10 (FIG. 6) of the first embodiment. Therefore, in FIG. 8, the same code | symbol is attached | subjected to the component similar to the reinforcing instrument 10 (FIG. 6), and the description is abbreviate | omitted or only mentioned as needed.

  As shown in FIG. 9, the spacer 22 is made of a rectangular metal plate, and two bolt insertion holes 22 </ b> A and 22 </ b> B opened in the thickness direction are provided side by side in the longitudinal direction. The spacer 24 is made of a metal plate having a thickness different from that of the spacer 22, and, like the spacer 22, two bolt insertion holes 24 </ b> A and 24 </ b> B opened in the thickness direction are provided side by side in the longitudinal direction. As shown in FIG. 9, the spacer 24 is set to be thinner than the spacer 22.

  Returning to FIG. 8, the reinforcing device 20 is attached to the counterweight 300 through the first to tenth steps in the reinforcing device 10 of the first embodiment. In the reinforcing device 20, the seventh step and the first step are performed. Between the eight steps, a spacer sandwiching step (steps 7-1 to 3) is performed.

  With the seventh step, the metal bars 1145 and 1165 and the metal pads 2145 and 2165 are in contact with the side surface 312b of the first vertical frame 312 and the side surface 314b of the second vertical frame 314, respectively, with a metal ruler or caliper. To measure the distance D2 between the first rib plate 124 and the first rib plate 224 [step 7-1]. Needless to say, the size of the distance D2 measured at this time depends on the distance between the first vertical frame 312 and the second vertical frame 314 (the distance between the vertical frames 312 and 314 in the horizontal direction). .

  Then, one or a plurality of spacers 22 and 24 are selected so that the total thickness T when stacked is slightly smaller than the measured distance D2 [Step 7-2]. In this example, five spacers 22 and five spacers 24 are selected. A difference between the measured distance D2 and the thickness T is a fastening allowance M (= D2-T) of the fastening bolt 12 and the fastening nut 14.

  When the necessary spacers 22 and 24 are selected in the step 7-2, all the bolt insertion holes 22A and the bolt insertion holes 24A communicate with each other with the five spacers 22 and the five spacers 24, and all the bolts After stacking so that the insertion hole 22B and the bolt insertion hole 24B communicate with each other, the stacked spacers 22 and 24 are inserted between the first rib plate 124 and the first rib plate 224 [Step 7-3. ].

  Then, as in the case of the first embodiment, the first insertion tool 110 and the second insertion tool 210 are fastened by the two sets of fastening bolts 12 and fastening nuts 14 [eighth step]. At this time, one of the two fastening bolts 12 is inserted into the connected bolt insertion hole 22A and the bolt insertion hole 24A, and the other is inserted into the connected bolt insertion hole 22B and the bolt insertion hole 24B.

  As described above, in the state where the five spacers 22 and the five spacers 24 are sandwiched between the first rib plate 124 and the first rib plate 224, the first insertion tool 110 and the second insertion tool are inserted. The tool 210 is fastened. In the fastened state, the first rib plate 124, the spacer 24, the spacer 22, and the first rib plate 224 are in close contact. That is, the first insertion tool 110 and the second insertion tool 210 are pulled toward each other by the amount of the fastening allowance M, and as a result, the first hook 112 (the first and second hook-shaped members 114). , 116) and the second hooking tool 212 (first and second hook-like members 214, 216) are fastened in the attracted state in the direction in which they are attracted to each other. After the fastening, the distance D2 between the first rib plate 124 and the second rib plate 224 is equal to the thickness T (D2 = T).

  As described above, when the first rib plate 124, the spacer 24, the spacer 22, and the first rib plate 224 are brought into close contact with each other by using the spacers 22 and 24, the fastening bolt 12 is completely tightened. It is possible to prevent tightening more than necessary.

<Embodiment 3>
In the first and second embodiments, the first vertical frame 312 constituting the weight frame 308, the first hook 112 hooked on the second vertical frame 314, and the second hook 212 are each divided into two. Members (first and second hook-like members 114 and 116, first and second hook-like members 214 and 216). On the other hand, in the elevator balancing weight reinforcing device 30 (hereinafter simply referred to as “reinforcing device 30”) according to the third embodiment, the hooking tool is formed of a single member.

  The reinforcing device 30 according to the third embodiment is basically the same as the reinforcing device 10 according to the first embodiment, except that the configuration of the portion connecting the hooking tool in the hooking tool and the insertion tool is different. Therefore, in the reinforcing instrument 30 shown in FIG. 10, the same components as those of the reinforcing instrument 10 are denoted by the same reference numerals, are referred to as necessary, and different portions will be mainly described below.

  The 1st hook 150 which comprises the reinforcement tool 30 which concerns on Embodiment 3 contains the wire rope 152, as shown to Fig.10 (a). For example, the wire rope 152 is made of stainless steel and has an outer diameter of 2 mm. Both end portions of the wire rope 152 are bent in an annular shape, and each end portion is fastened (caulked) with sleeve-shaped stainless steel clamp tubes 154 and 156. Here, the annular portions of the wire rope 152 formed by being clamped by the clamp tubes 154 and 156 are referred to as loop portions 152A and 152B, respectively.

  Each of the side plates 160 and 162 of the first insertion tool 158 constituting the reinforcing instrument 30 is provided with a through hole (not shown) penetrating in the thickness direction on the same axis. Has been inserted. The flange members 166 and 168 are press-fitted into both ends of the shaft 164 protruding from the side plates 160 and 162, respectively. The outer diameters of the flange members 166 and 168 are set to a size that allows the loop portions 152A and 152B to pass through.

  Also in the reinforcing instrument 30, the second hooking tool (not shown) has the same configuration as the first hooking tool 150, and the second insertion tool (not shown) is the same as the first insertion tool 158. Since it is the same structure, it abbreviate | omits about those description.

  In the reinforcing device 30 having the above-described constituent members, as shown in FIG. 10C, the first hook 150 is hooked on the first vertical frame 312 toward the second vertical frame 314 (FIG. 1). The loop portion 152A of the first hook 150 that is hooked on the first vertical frame 312 is anchored to the end portion of the shaft 164 on the flange member 168 side, and the loop portion 152B is the shaft on the flange member 166 side. The first hooking tool 150 is coupled to the first insertion tool 158 while being anchored to the end portion of the 164.

  The first insertion tool 110 to which the first hooking tool 150 is connected and the second insertion tool (both not shown) to which the second hooking tool is connected include two sets of fastening bolts 12. Since the structure fastened by the fastening nut 14 (FIG. 3) is the same as that of the first embodiment, the description thereof is omitted.

  The first hook 150 is hooked on the first vertical frame 312 by, for example, the loop portion 152A from the front F side and the gap between the tip of the guide rail 304 and the side surface 312b of the first vertical frame 312. This can be realized by entering the rear R side through G1. As is apparent from the method, also in the third embodiment, the first hooking tool 150 is hooked on the first vertical frame 312 without removing the counterweight 300 (FIG. 1) from the guide rails 304 and 306. Can do.

  When the size of the gap G1 is 8 mm, since the outer diameter of the wire rope 152 is 2 mm, the gap between the wire rope 152 and the guide rail 304 is about 6 mm. If there is a gap of this level, the wire rope 152 will not come into contact with the guide rail 304 (the tip) during the lifting and lowering of the counterweight 300, so that no problem occurs.

As described above, the third embodiment has been described. However, the third embodiment is not limited to the above-described one, and may be, for example, the following modifications.
(Modification)
(I) In the above example, one first hook 150 is hooked on the first vertical frame 312, but the present invention is not limited to this, and two or three or more hooks may be hooked.

  (Ii) Alternatively, the first hooking tool 150 may be changed to a length that is approximately double, and the first hook 150 may be doubled and hooked to the first vertical frame 312. That is, the central portion of the first hook 150 in the length direction is hooked on the end portion of the shaft 164 on the flange member 168 side, and the loop portions 152A and 152B are both attached to the end portion of the shaft 164 on the flange member 166 side. They can be moored. In this case, it should be noted that the wire rope 152 is not crossed on the side surface 312b of the first vertical frame 312. This is to prevent the gap between the wire rope 152 and the guide rail 304 from being unnecessarily narrowed.

  (Iii) In the above example, the loop portions 152A and 152B are formed at both ends of the wire rope 152 in order to moor both ends of the first hook 150 on the shaft 164, but instead of the loop portions 152A and 152B, Metal rings (not shown) may be joined to both ends of the wire rope 152.

  (Iv) In the above example, the wire rope 152 which is a cord-like body is used as the main part of the first hooking tool 150 hooked on the first vertical frame 312. However, the cord-like body is not limited to the wire rope. For example, a rubber belt with a core wire such as a steel cord or a belt made of carbon fiber may be used. In short, the guide rail 304 is flexible and can be hooked on the first vertical frame 312, hooked on the first vertical frame 312, and in close contact with the side surface 312 b of the guide rail 304. Any cord-like body may be used as long as the gap with the tip does not become so small that it hinders the lifting and lowering of the counterweight 300.

  As described above, the elevator balancing weight reinforcing device according to the present invention has been described based on the embodiment. However, the present invention is not limited to the above-described form, and for example, as the following form It doesn't matter.

  (1) In the above embodiment, the counterweight 300 is a type of counterweight having a through-bolt penetrating a plurality of weight pieces, but the counterweight without the through-bolt is also a reinforcing device 10,20. , 30 to be reinforced. For example, a counterweight that is attached to a vertical frame that constitutes a weight frame and has a pressing bracket (not shown) that presses down the upper surface of the uppermost weight piece among the stacked weight pieces, It becomes the object (attachment object) of reinforcement by the reinforcing instruments 10, 20, and 30.

  (2) In the above-described embodiment, the reinforcing instruments 10, 20, and 30 are attached to the existing counterweight. However, the present invention is not limited to this, and may be attached to a newly established counterweight. That is, after attaching the reinforcing instruments 10, 20, and 30 to the counterweight, the counterweight may be set on the guide rail.

  (3) In the above embodiment, the fastening bolts 12 and the fastening nuts 14 are used as fasteners for fastening the first insertion tool 110 and the second insertion tool 210. It does not matter as follows. That is, the bolt insertion holes 130 and 132 provided in the first rib plate 124 may be screw holes, and the fastening bolts 12 may be screwed into the screw holes.

  (4) In Embodiments 1 and 2 described above, the first insertion tool 110 and the first and second hook-shaped members 114 and 116 are connected by the connection bolt 142 that is a connection tool. For example, you may connect with a blind rivet (not shown). In this case, instead of the screw holes 134,..., 140 formed in the side plates 120, 122, simple through holes (not shown) are used. Then, the main body of the blind rivet is inserted and crimped in a state where the four through holes and the (bolt insertion) holes 1141C, 1141D, 1161C, and 1161D are communicated with each other. The connection between the second insertion tool 210 and the first and second hook-shaped members 214 and 216 may also be connected by blind rivets.

  The elevator balancing weight reinforcing device according to the present invention can be suitably used for reinforcing a weight frame of an existing balancing weight, for example.

10, 20, 30 Elevator counterweight reinforcement device 12 Fastening bolt 14 Fastening nut 110, 158 First insertion tool 112, 150 First hook 210 Second insertion tool 212 Second hook 300 Balance weight 310 Weight piece 312 First vertical frame 314 Second vertical frame 316 Upper frame 318 Lower frame

Claims (4)

A plurality of weight pieces are stacked and stored in a weight frame in which the upper portions of a pair of vertical frames of the first vertical frame and the second vertical frame are connected by an upper frame and the lower portions are connected by a lower frame. , A reinforcing device attached to the counterweight of the elevator,
A first hook that is hooked on the first vertical frame toward the second vertical frame;
A second hooking tool hooked on the second vertical frame toward the first vertical frame;
A first insertion tool interposed between two weight pieces adjacent in the vertical direction in the plurality of weight pieces and connected to the first hook;
A second insertion tool interposed between the two weight pieces and connected to the second hook;
The first insertion tool to which the first hooking tool is connected and the second insertion tool to which the second hooking tool is connected, the first hooking tool and the second hooking tool. Fasteners that fasten in a state of being attracted in a direction in which they are attracted to each other;
Have
Each of the first insertion tool and the second insertion tool is placed on a lower weight piece among the two weight pieces adjacent in the vertical direction,
The first vertical frame and the second vertical frame are brought into a state in which the first hook and the second hook are pulled toward each other by the fasteners, so that the first vertical frame and the second vertical frame A reinforcing device for an elevator counterweight, characterized by being fixed to each other. The first vertical frame and the second vertical frame each have a U-shaped cross section and are connected by the upper frame and the lower frame in a posture in which the U-shaped openings face each other. And
The first hooking tool includes a first hook-like member hooked on a first corner portion of the first vertical frame and a second hook-like member hooked on a second corner portion. The both hook-shaped members are connected to the first insertion tool,
The second hook is composed of a first hook-like member hooked on the first corner of the U-shaped second frame and a second hook-like member hooked on the second corner. , counterweight reinforcing instrument for the elevator according to claim 1, characterized in that the two hook-shaped member is connected to the second through bottom end stop. The counterweights are lifted and lowered by being guided by a pair of guide rails installed on the opposite sides of the U-shaped openings of the first vertical frame and the second vertical frame, respectively. Because
Corresponding to the first vertical frame between the first hook-shaped member and the second hook-shaped member constituting the first hook, which is hooked on the first vertical frame. There is a gap so as not to interfere with the guide rail,
Corresponding to the second vertical frame between the first hook-shaped member and the second hook-shaped member constituting the second hook, which is hooked on the second vertical frame. The elevator balancing weight reinforcing device according to claim 2 , wherein a gap is provided so as not to interfere with the guide rail. A plurality of weight pieces are stacked and stored in a weight frame in which the upper portions of a pair of vertical frames of the first vertical frame and the second vertical frame are connected by an upper frame and the lower portions are connected by a lower frame. , The elevator counterweight,
A counterweight for an elevator, wherein the counterweight frame reinforcement device according to any one of claims 1 to 3 is mounted and the weight frame is reinforced.

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