JPH0720183Y2 - Multi-functional manhole guard fence - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention relates to a protective fence to be installed around the opening of a manhole, and not only functions as an original protective fence, but also a trolley for opening and closing the lid of a manhole and carrying various equipment. It provides a multifunctional manhole guard fence that also has the function of.

[0002]

2. Description of the Related Art Conventionally, a manhole guard fence of this type has a wire mesh or a display plate with appropriate cautions fixed to a rectangular metal frame, and four sets of these are prepared and connected to each other with an appropriate bracket. However, it was designed to stand around the opening of the manhole so that it would surround the opening of the manhole, and it only functioned as a protective fence.

[0003]

[Problems to be Solved by the Invention] When carrying out various constructions in a manhole, the manhole cover covering the opening must first be removed, and a special opening / closing device for that purpose is required. Since the manhole cover is mainly made of cast iron and its weight is heavy, the dedicated opening and closing device is inevitably large in size, and it takes much labor to carry it. Then, after removing the lid, the above-mentioned manhole protection fence which has been carried in advance is erected near the manhole. Furthermore, it is necessary to separately carry the equipment, tools, etc. for carrying out various constructions and work in the manhole by a trolley.

That is, in order to perform various constructions in a manhole, a lid opening / closing device, a manhole protection fence, and a trolley for transporting the device are required, and each of them is conventionally required separately. Therefore, it is necessary to mount these on work vehicles and to go to the site, which occupies a large space on the cargo bed. Moreover, once the lid is opened, the opening and closing equipment is unnecessary until the end of the work, but if it is left near the manhole, it will be an obstacle to traffic, so it must be returned to the work vehicle or moved to a place where it does not interfere. Also, after the work is completed, it is necessary to bring the switchgear to the manhole again to install the lid. The dolly is also subject to such movement. Therefore, such an opening / closing device that is not directly related to the work, the effort and time required to move the trolley cannot be ignored, and it is not preferable.

[0005]

[Means for Solving the Problems] The present invention has been made in view of such a point, and not only functions as a protective fence but also functions of a manhole cover opening / closing device and a trolley for transporting various equipment. It aims to solve the above-mentioned problems by providing a multifunctional manhole guard fence that also has the following features.

Therefore, the present invention adopts the following configuration. First, the present invention basically comprises a pedestal body and a fence body, of which the pedestal body has the following configuration. That is, the support frame is rotatable with respect to the one side of the main body frame while the long side of the rectangular support frame is made to correspond to one side of the rectangular main body frame having a size capable of enclosing the opening portion of the target manhole. , The wheels are provided on both lower surfaces of the support frame, and the hooks for lifting the manhole lid are provided on the front edge of the support frame, and the support frame and the main body frame are freely expandable and contractible. The support member is laid over, and the receiving member having the insertion opening facing the upper surface is fixed to the four corners of the main body frame.

Further, the fence is characterized in that it has a pillar that can be inserted into the receiving member of the pedestal body. The "fence body" mentioned here has a configuration as a "fence" by appropriately arranging vertical rails and horizontal rails.

A turnbuckle is a typical example of the stretchable support member.

Further, in the multi-function type manhole guard fence configured as described above, a hook for lifting the manhole cover may be provided slidably in the longitudinal direction of the support frame along the front edge of the support frame.

Furthermore, the frames on both sides of the main body frame may be constructed so as to be bendable.

[0011]

If the main body frame is installed so as to surround the manhole opening, and the pillars of the fence body are inserted into the receiving member on the main body frame to stand upright, it becomes a protective fence surrounding the manhole opening.

The support member passed between the support frame and the main body frame is adjusted so that the included angle between them is fixed at an appropriate angle (for example, 100 to 130 degrees), and the hook for lifting the lid of the manhole is set to the manhole. By directly or indirectly hooking into the hole of the lid and pushing down on one end of the body frame, the manhole lid can be easily lifted and removed by the lever principle using the wheel position as a fulcrum. .

Further, if the angle between the support frame and the main body frame is appropriately adjusted in this way and appropriate net bodies and crosspieces are passed to the support frame and the main body frame, the support frame is provided with wheels. It is possible to use a dolly in which the frame is a carrier and the main body frame is a rear body that follows the carrier.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 are a plan view and a side view, respectively, showing a state when a protective fence is used in this embodiment, and FIG. [Fig. 3] is a perspective view of the manhole cover opening / closing device. In these drawings, reference numeral 1 denotes a square main body frame having a size capable of enclosing an opening portion (two-dot chain line portion in FIG. 1) of a manhole, and in this embodiment, both ends of a base material frame 2 having a substantially L-shaped cross section are provided. One end portion of each of the side frames 3 and 4 having a substantially L-shaped cross section is fixed to each other, and a grip frame 5 is fixed between the other end portions of each of the side frames 3 and 4, respectively.

The side frames 3 and 4 are symmetrical, and the side frame 3 will now be described in detail. The side frame 3 has a length which is about half the length of the side frame 3 so that the side frame 3 can be bent. The frame components 6 and 7 are superposed at the center, and a substantially "shi" shaped lock pin 8 is passed through the superposed portion to fix them.

That is, three insertion holes are formed in the side wall of one end of the side frame component 6 at equal intervals, and two insertion holes are formed in one end of the side frame component 7, and the insertion holes in the side frame component 6 are formed. Out of the handle frame 5
The two insertion holes on the side are aligned with the insertion holes of the side frame component 7, and the long axis of the lock pin 8 is inserted into the middle insertion hole of the insertion holes of the side frame component 6, and this is used as a pivot to lock. The side frames constituting members 6 and 7 are fixed by inserting the pin 8 into the remaining insertion holes using the short shaft of the pin 8 as a locking shaft.
Therefore, if the short axis of the lock pin 8 is pulled out, the lock pin 8
The side frame components 6, 7 are rotatable about the long axis of the side frame as a pivot, and are rotated about 180 ° so that the other insertion holes of the side frame component 7 match the other insertion holes of the side frame component 6. Then, by inserting the short axis of the lock pin 8 into the corresponding insertion hole, the side frame component 6,
7 is fixed in that state. In this way, the side frame 3 is configured to be bendable. Side frame 4
Similarly, the side frame components 9 and 10 and the lock pin 11 are also bendable.

The end portions of the side frame constituent members 6 and 9 of the side frames 3 and 4 on the base material frame 2 side project to the same side, and the projecting end portion and the rectangular support frame 1 are formed.
Both ends of the second horizontal rail 13 are rotatably fixed. Therefore, the body frame 1 and the support frame 12 are rotatable.

The support frame 12 has frame members 14 and 15 on both sides having one end fixed to both ends of the horizontal rail 13 and a pipe member rotatably passed between the other ends of the frame members 14 and 15. It is composed of 16. Then, the lower surface in the vicinity of the fixed portion between the horizontal rail 13 and the frame members 14 and 15, that is, the support frame 1
2, appropriate brackets 17, 17 are fixed to the lower surface of the corner portion of the main body frame 1 side.
A wheel 18 is provided on each of 7 and 17 via an appropriate wheel support member so as to be rotatable in the directions of the frame members 14 and 15, respectively.

The pipe member 16 is provided with elongated holes 19 and 20 penetrating vertically along the longitudinal direction thereof, and the threaded portions of the substantially hook-shaped lifting hooks 21 and 22 are formed in the elongated holes 19 and 20, respectively. Each of these lifting hooks 2 is inserted from below and projected upward, and a nut member is fastened to the protruding end portion.
1, 22 are fixed to the pipe member 16. Therefore, when the nut member is loosened, the respective lifting hooks 21 and 22 are slidable along the elongated holes 19 and 20, respectively, and can be fixed at arbitrary positions.

On the other hand, appropriate brackets 23, 23 are fixed to the lower surface in the vicinity of the fixing portion of each base material frame 2 and the side frame constituent members 6, 9, that is, the lower surface of the corner portion on the side of the support frame 12 in the main body frame 1, Each bracket 23,
Receiving members 24 and 25 formed by cutting a pipe material are fixed to the upper surface of 23. Furthermore, appropriate brackets 26, 2 are also provided on the lower surface near both end portions of the handle frame 5.
6 is fixed, and receiving members 27, 28 formed by cutting pipe material on the upper surfaces of the brackets 26, 26.
Is stuck. Each of these receiving members 24, 25, 2
7 and 28 have the same shape and the same size.

Thus, turnbuckles 29 and 30 are provided between the side frame components 6 and 9 of the main body frame 1 and the frame members 14 and 15 of the support frame 12, respectively (however,
In FIG. 2, the turnbuckle 29 is shown for convenience of explanation.
The illustration of 30 is omitted). Specifically, the ends of the joints of the turnbuckles 29 and 30 are rotatably fixed to the side frame components 6 and 9 and the frame members 14 and 15, respectively. Therefore, the included angle between the body frame 1 and the support frame 12 is the turnbuckle 2
It is regulated and maintained by expansion and contraction of 9, 30. The pedestal body in this embodiment has the above-mentioned configuration.

Next, the fence in this embodiment will be described. In this embodiment, the A frame 31, the B frame 32, and the C frame 3 are provided.
3, D frame 34 is composed of four frame bodies. Of these, the A frame 31 and the B frame 32 are the same, and the C frame 33 and the D frame are
The frame bodies 34 are the same.

First, the A frame 31 will be described with reference to FIG.
As shown in FIG. 5, the pipe members are appropriately bent to form a substantially inverted U-shaped frame member 35, and the horizontal crosspieces 36, 37, 38 are vertically fixed and fixed to each other. A black striped rectangular display plate 39 is fixed. Then, on the upper portions of the pillar portions 40, 41 on both sides of the pillar body 35, the receiving metal fittings 42, 43,
Receiving metal fittings 44 and 45 are also provided on the same surface side in each lower part.

Next, the D frame 34 will be described. As shown in FIG. 2, the D frame 34 in the present embodiment has a strut between an upper bar 46 and a lower bar 47 whose both ends are bent downward. Four
8 and 49 are fixed, and the cross rail 5 is provided between these columns 48 and 49.
0 and 51 are passed, and a rectangular display plate 52 having a diagonal yellow-black stripe pattern is fixed between the horizontal rails 50 and 51.

This embodiment has the above-mentioned structure. To make a manhole protection fence, first, turnbuckles 29, 3 are used.
Adjusting 0 appropriately, body frame 1 and support frame 12
Fix the angle to fold with about 90 degrees. After that, the fence is installed, but in the present embodiment, in consideration of the quickness of installation, a method in which the A frame 31, the C frame 33, the B frame 32, and the D frame 34 are respectively set in advance is used. I am collecting. That is, for example, referring to FIG. 2, the case of the combination of the B frame body 32 and the D frame body 34 will be described.
By inserting one end of the upper bar 46 of the frame 34 into the receiving fitting 45 of the B frame 32 and one end of the lower bar 47 of the D frame 34 rotatably, respectively, the B frame 32 and the D frame 34 and 34 in a freely rotatable relationship. In this case, the upper bar 46 and the lower bar 4
If an appropriate stopper is provided at the one end portion of the insertion portion 7 so as not to be detachable, the handling is easy. On the other hand, A frame 3
Similarly, 1 and the C-frame body 33 are also set in a pair so as to be mutually rotatable. Of the frame bodies thus assembled, first, the support columns 40 and 41 of the A frame 31 are used as the receiving members 24 and 25 of the main body frame 1, and the support columns 40 and 41 of the B frame 32 are used as the main body. It is inserted into the receiving members 27 and 28 of the frame 1 to stand upright. After that, C frame 3
3, the upper bars 46 of the D frame 34 are slightly lifted and rotated, and the C brackets are respectively attached to the receiving fittings 42 of the B frame 32 and the A frame 31.
The lower bars 47 of the frame body 33 and the D frame body 34 are respectively connected to the B frame body 32,
The protective fence state is completed by inserting it into the receiving metal fitting 44 of the A frame 31.

Next, to make the manhole cover opening / closing device,
3, 5, and 6 (FIG. 6 shows the main body frame 1 for convenience of explanation.
As shown in (showing the front when the included angle between the support frame 12 and the support frame 12 is 90 degrees), the respective A frame 31, B frame 32, C frame 33, and D frame 34 are attached to the main frame. Instead of setting it to 1, the turnbuckles 29 and 30 are adjusted appropriately so that the folding angle between the body frame 1 and the support frame 12 is about 120 degrees. And actually the manhole cover 51
When removing, the lifting adapters 54 and 55 are first attached to the holes 52 and 53 of the manhole cover 51, as shown in FIG.

The lifting adapters 54 and 5 used this time
5 has the same structure. As shown in FIG. 7, this lifting adapter 54 has a shaft that can freely penetrate the hole 52 of the manhole cover 51 and a ring member 57 that is rotatably provided on the head of 56. A display member 58 is fixed to the shaft 56, and a locking member 60 having a ridge 59 is integrally fixed to the tip end of the shaft 56, and further provided on the shaft slidably on the body of 56. A coil spring 62 is wound between the washer 61 and the display member 58.
The hole 52 of the manhole cover 51 is usually in the shape of a long hole, and the locking member 60 has a shape and size that can currency the hole 52 when the ridge 59 thereof coincides with the longitudinal direction of the long hole. The washer 61 has a size such that it is locked in the hole 52 of the manhole cover 51. Further, the direction of the display member 58 and the direction of the protrusion 59 of the locking member 60 are aligned. And the locking member 6
Pay attention to the direction of the ridge 59 of 0 and insert the washer 61 into the hole 52.
The locking member 60 is fixed to the manhole cover 51 while being locked to the peripheral portion.
Insert it into the hole 52 and rotate it 90 degrees to project the ridge 59.
Is locked to the rear edge of the hole 52 of the manhole cover 51, the lifting adapter 54 is attached to the hole 52 of the manhole cover 51 by the bias of the coil spring 62.

The lifting adapter 5 thus mounted.
The lifting hook 2 is attached to each of the ring members 57, 57 of 4, 55.
By hooking 1, 22 and pushing down the handle frame 5 as it is, the heavy manhole cover 51 can be easily lifted and removed by the lever principle. After that, just back it up.

Further, the lifting hooks 21 and 22 have the long holes 1
Since it is slidable along 9 and 20, and can be fixed at any position, it can be applied even if the sizes of the holes in the manhole cover are different.

Next, a description will be given of the case of the trolley state, as shown in FIG. 8 (this figure shows a plane when the included angle between the main body frame 1 and the support frame 12 is 180 degrees for convenience). Although basically the same as the state of the manhole cover opening / closing device, net bodies 61 and 62 made of expanded metal are respectively provided on the upper surface of the support frame 12 and the upper surface near the end of the main frame 1 on the support frame 12 side. It is placed, and the above-mentioned A frame body 31 and C frame body 33 are leaned against the main body frame 1.

The net bodies 61 and 62 are mounted with the ends of the frames 63 and 64 constituting the respective frame members placed on the main body frame 1 and the support frame 12, respectively. A frame 3
1 and the C frame 33 are used as a set used in the above-mentioned protective fence state, and the other ends of the upper bar 46 and the lower bar 47 in the C frame 33 are connected to the A frame. 31 is inserted into the receiving metal fitting 42 and the receiving metal fitting 44 to polymerize them,
It is leaned against the body frame 1 with the A frame 31 facing down. By doing so, the support frame 12
The transported object does not drop from the main body frame 1 and can be used as a trolley for transporting articles and the like.

Further, in this invention, it can be used as a bridge. A crossover bridge is a temporary bridge for pedestrians to stride over a ditch caused by excavation work, etc. It is desirable that there are railings on both sides of the bridge to prevent danger. This device can easily provide such a bridge. That is, from the state of the manhole protection fence described above, the other ends of the upper and lower bars 46 and 47 of the C frame 33 and the D frame 34 are respectively connected to the B frame 32 and the receiving bracket 42 of the A frame 31. , Once pulled out from the receiving metal fittings 44, rotated inward by 90 degrees, respectively, and again inserted into the respective receiving metal fittings 42, 44 of the A frame 31 and the B frame 32, respectively. Body 3
3. By integrating the B frame body 32 and the D frame body 34 so as to be overlapped with each other, it is possible to provide a bridge over which the place where the C frame body 33 and the D frame body 34 were located until now becomes a passageway. Then, an appropriate plate body (not shown) may be passed between the side frames 3 and 4 of the main body frame 1. In the bridge constructed in this way, the handrails on both sides of the bridge are formed by the A frame 31, the C frame 33, the B frame 32, and the D frame 34.
In addition, since the display boards are fixed to each frame, not only mere handrails but also "fences" are present on both sides of the bridge, providing a sense of security for pedestrians. Can be

[0033]

According to the multi-function type manhole protection fence of claim 1, the mainframe is installed around the manhole opening, and the supporting column of the fence is simply inserted into the receiving member of the mainframe to form the manhole. It can be a protective fence surrounding the opening. Further, it can be used as a manhole cover opening / closing device by appropriately adjusting the included angle between the support frame and the main body frame without attaching the fence. Further, by appropriately adjusting the angle between the support frame and the main body frame in such a manner and passing an appropriate net body or crosspiece to the support frame and the main body frame, it is possible to make a dolly for transporting equipment.

According to the multi-function type manhole guard fence of claim 2, in addition to such an effect, a manhole cover that can be used even for manhole covers having different opening / closing holes. The opening and closing device of

According to the multi-function type manhole protection fence described in claim 3, the main body frame can be a compact multi-function type manhole protection fence, and does not require a large space for transportation and storage.

[Brief description of drawings]

FIG. 1 is a plan view of a multifunctional manhole protection fence according to an embodiment in a protection fence state.

FIG. 2 is a side view of a multifunctional manhole protection fence according to an embodiment in a protection fence state.

FIG. 3 is a perspective view of a multifunctional manhole protective fence according to an embodiment when the manhole cover opening / closing device is used.

FIG. 4 is a front view of an A frame in the example.

FIG. 5 is a side view of a multifunctional manhole guard fence according to an embodiment when it is used as a manhole cover opening / closing device.

FIG. 6 is an explanatory view of the front of the multifunctional manhole guard fence according to the embodiment when the manhole cover opening / closing device is used.

FIG. 7 is a side view of the lifting adapter used when removing the manhole cover according to the embodiment.

FIG. 8 is an explanatory plan view of a multifunctional manhole guard fence according to an embodiment when a dolly is used.

FIG. 9 is a side view of the multifunctional manhole guard fence according to the embodiment in a crossover state.

[Explanation of symbols]

 1 Body Frame 3 Side Frame 4 Side Frame 12 Support Frame 16 Pipe Material 18 Wheel 21 Lifting Hook 22 Lifting Hook 24 Receiving Member 25 Receiving Member 27 Receiving Member 28 Receiving Member 29 Turnbuckle 30 Turnbuckle 31 A Frame 32 B Frame 33 C frame 34 D frame 40 Strut portion 41 Strut portion 48 Strut 49 Strut

Continuation of the front page (72) Takashi Sato Inventor Takashi Sato, Morioka City, Iwate Prefecture, 4th No. 53, Iwate Co., Ltd. Denki Tekko Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A pedestal body comprising a pedestal body and a fence body, wherein the pedestal body corresponds to one side of a rectangular main frame having a size capable of enclosing an opening of a target manhole and a long side of a rectangular support frame. A support frame is provided so as to be rotatable with respect to the one side of the main body frame, wheels are provided on both lower surfaces of the support frame, and hooks for lifting a manhole cover are provided at the front edge of the support frame. A support member is provided between the support frame and the main body frame, and a stretchable support member is laid between the support frame and the main body frame. Receiving members whose insertion openings are directed toward the upper surface are fixed to the four corners of the main body frame. Is a multi-function type manhole protective fence, which has a pillar that can be inserted into the receiving member of the base body. 2. The multifunctional manhole guard fence according to claim 1, wherein the hook for lifting the lid of the manhole is slidably provided in the longitudinal direction of the support frame along the front edge of the support frame. 3. The multifunctional manhole protection fence according to claim 1, wherein the frames on both sides of the main body frame are configured to be bendable.