JP2017095275A - Guide device of compensation rope and elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide device of a compensation rope and an elevator capable of installing a guide part for restraining a swing of the compensation rope, upward in a pit part.SOLUTION: According to the embodiment of the present invention, guide device of a compensation rope is provided with a car of an elevator for lifting in a hoistway having a pit part, a balance weight connected to this car by a main rope, a compensation rope connected to this balance weight and the car and compensating for an unbalance of weight of the main rope, a guide part provided in the pit part in a height range of a straight line part for suspending this compensation rope and restraining a swing of the compensation rope, a plunger fixed to this guide part by a connector and a shock absorber having a shock absorber body for vertically moving this plunger, in which the guide part vertically moves by an expansion of the plunger of this shock absorber.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a compensating cable guide device and an elevator equipped with the same, and more particularly to a compensating cable guide device and an elevator that perform steadying of the compensating cable.

  In the vine type elevator, the weight unbalance of the main rope is compensated by a compensation rope such as a compensation chain and a compensation rope. An elevator having a car ascending / descending speed exceeding 120 m / min is provided with a guide device for the compensation cable in the pit portion in order to suppress the shake of the compensation cable (see, for example, Patent Document 1).

  The compensation cable has a linear portion that hangs down due to its own weight, and a curved portion that has a curvature and turns back at the lowest position. When the length of the straight line portion of the compensating cable that is vertically suspended is short, the compensating cable is swayed. Therefore, conventionally, a compensation device that ensures a large vertical drooping range of the compensating cable is known (see, for example, Patent Document 2). ). Further, there is known a rope shake detection device that surrounds the compensation cable by four rollers assembled in a cross-beam shape in the range of the straight line portion that hangs from both ends of the compensation cable (see, for example, Patent Document 3).

JP 2010-168167 A JP 2011-1152 A JP 2010-58940 A

  However, the installation height of the guide portion surrounding the compensation cable needs to fall within the range of the straight portion of the compensation cable. If the installation height of the guide part is within the range of the curved part of the compensating cable, the curved part of the compensating cable is slackened when the amount of deflection of the compensating cable increases, and a part of the compensating cable rides on the guide part. Thus, the compensation cable is caught or entangled with the guide part, and the compensation cable is pulled from the guide part. There is a problem that the compensation cable is broken.

  The present invention was devised in view of such a problem, and provides a guide device and an elevator for a compensation cable that can install a guide portion for suppressing the deflection of the compensation cable at a pit portion. Objective.

  In order to solve such a problem, according to one embodiment of the present invention, an elevator car that moves up and down a hoistway having a pit portion, a counterweight connected to the car by a main rope, the counterweight and the counterweight A compensating cable connected to a cage to compensate for an imbalance in the weight of the main rope, a guide part provided in the pit portion at a height range of a straight portion where the compensating cable hangs down, And a shock absorber having a shock absorber main body for moving the plunger up and down, and the guide portion moves up and down by the expansion and contraction of the plunger of the shock absorber. A device for guiding a compensation cable is provided.

  According to another embodiment of the present invention, an elevator car that moves up and down a hoistway having a pit portion, a counterweight connected to the car by a main rope, and the car and the counterweight are driven up and down. A hoisting machine wound around the main rope, a compensating rope connected to the counterweight and the cage to compensate for an imbalance in the weight of the main rope due to the hoisting drive of the hoisting machine, and the compensating rope A guide portion that is provided in the pit portion in the range of the height of the straight portion where the pendant drops and suppresses the deflection of the compensation cable, a plunger that is fixed to the guide portion with a connector, and a shock absorber body that moves the plunger up and down. And an elevator characterized in that the guide part moves up and down by expansion and contraction of the plunger of the shock absorber.

  According to the compensating rope guiding device and the elevator of the present invention, it is possible to install the guiding portion upward in the pit portion.

It is a perspective view of a passenger conveyor concerning an embodiment of the invention. It is a block diagram of the guidance apparatus of the compensation rope which concerns on embodiment of this invention. It is a perspective view of the guide part single-piece | unit of the guide apparatus of the compensation rope which concerns on embodiment of this invention. (A), (b) is a figure which shows the some structural example of the buffer and guide part of the guide apparatus of the compensation rope which concerns on embodiment of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a compensating cable guiding apparatus and an elevator according to an embodiment of the invention will be described with reference to FIGS. In the drawings, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a configuration diagram of an elevator according to an embodiment of the present invention. The guide device for the compensation cable according to the present embodiment is a movable compensation chain guide device 1 that guides the compensation chain 16 by stabilizing the compensation chain 16 (compensation cable). The elevator according to the present embodiment has this movable compen chain guide device 1.

  The elevator according to the present embodiment includes an elevator car 12 that moves up and down a hoistway 11 having a pit portion 10, a counterweight 14 connected to the car 12 by a main rope 13 (main rope), these cars 12, and A hoisting machine 15 wound around a main rope 13 that drives the counterweight 14 up and down.

  Further, the elevator according to the present embodiment includes a balance weight 14 that compensates for an imbalance in the weight of the main rope 13 that is moved by the hoisting drive of the hoisting machine 15 and a compensator chain 16 that is connected to the car 12 (compensation rope). And guide devices 17 and 18 (guide portions) that are provided in the pit portion 10 in the range of the height of the linear portion where the compensator chain 16 hangs down and suppress the deflection of the compensator chain 16.

  Furthermore, the elevator according to the present embodiment includes a shock absorber 22 having a plunger 20 fixed to the guide device 17 with a bracket 19 (connector), a buffer body 21 (buffer body) for moving the plunger 20 up and down, and a guide device. And a shock absorber 26 having a buffer body 25 for moving the plunger 24 up and down. The guide devices 17 and 18 move vertically by the expansion and contraction of the plunger 20 of the shock absorber 22 and the plunger 24 of the shock absorber 26. These cage 12, counterweight 14, compensator chain 16, guide devices 17 and 18, and shock absorbers 22 and 26 constitute a movable compensator chain guide device 1.

  The car 12 travels to a landing on each floor along a plurality of car guide rails (not shown) of the hoistway 11. At the time of landing, the car 12 makes the height of the car floor surface coincide with the height of the floor surface 36 of each floor landing. One end of a tail cord 27 is electrically connected to the car 12, and the other end of the tail cord 27 is connected to a control unit 28 provided on the wall of the hoistway 11. The car 12 is supplied with power from the control unit 28. Control signals are transmitted and received between the car 12 and the control unit 28.

  In the main rope 13, the rope weight of the suspended portion on the car 12 side and the rope weight of the suspended portion on the counterweight 14 side differ depending on the positions of the cage 12 and the counterweight 14. The counterweight 14 moves up and down along a plurality of weight guide rails (not shown) of the hoistway 11. The hoisting machine 15 includes a traction sheave around which the main rope 13 is wound, and a motor that rotates the traction sheave. The motor rotationally drives the traction sheave under the control of the control unit 28, and raises and lowers the car 12 and the counterweight 14 in a slidable manner.

  Guide devices 17 and 18 (FIG. 1) are steady-state guide mechanisms for the compensator chain 16 provided in the pit portion 10. The pit portion 10 is a space that continues downward from the lifting space and is below the floor 36 of the lowermost landing. The bottom of the pit part 10 is lower than the floor surface 36 of the lowest floor landing.

  FIG. 2 is a configuration diagram of a compensation cable guiding apparatus according to the present embodiment. The above described symbols represent the same elements.

  The compensation chain 16 is a balance chain provided independently of the main rope 13. One end of the compensation chain 16 is fixed to the chain receiver 29 of the car 12, and the other end is fixed to the chain receiver 30 of the counterweight 14. The compensator chain 16 includes a straight portion (see range H1) that hangs down from the counterweight 14 due to its own weight, a straight portion that hangs down from the car 12 under its own weight (see range H2), and a curved portion (see range H3) having a curvature. Have. The curvature is a curvature having a curved portion as an arc, and is determined by the bending rigidity of the compensation chain 16.

  Further, the installation height of the guide devices 17 and 18 is lower than the lower one of the lowermost portion of the car 12 and the lowermost portion of the counterweight 14, and the plunger 20 and the shock absorber 26 of the shock absorber 22. It is below each top dead center of the plunger 24. The guide devices 17 and 18 move up and down within the range of the buffer stroke of the plungers 20 and 24. The lowermost part of the car 12 is various members provided below the car frame, for example, a buffer receiver 37. The lowermost part of the counterweight 14 is various members provided below the weight frame of the counterweight 14, for example, a buffer receiver 38.

  The installation height of the guide devices 17 and 18 is determined so as not to interfere with either the car 12 or the counterweight 14 when the guide devices 17 and 18 are raised. The guide devices 17 and 18 are provided so as to be positioned at a height within a height range determined by the buffer stroke of the plungers 20 and 24 with respect to a given pit size.

  FIG. 3 is a perspective view of the guide device 17 as a single unit. The above described symbols represent the same elements. The guide device 17 includes a pair of rollers 31 and 32 that are parallel to each other, and another pair of rollers 33 and 34 that are provided below the rollers 31 and 32 and have axes that intersect the axial direction of the rollers 31 and 32, respectively. And a frame 35 that pivotally supports these rollers 31 to 34. The guide device 17 assembles four rollers 31, 32, 33, 34 two by two in the upper and lower stages so that the upper two rollers 31, 32 and the lower two rollers 33, 34 are three-dimensional. The compensation chain 16 is surrounded by guiding the compensation chain 16 into a central gap obtained by intersecting. The guide device 18 has the same configuration as the guide device 17.

  The brackets 19 and 23 in FIG. 1 are plate materials and steel materials having load resistance, and the guide devices 17 and 18 are firmly fastened to the shock absorbers 22 and 26 by fastening members such as bolts, frame materials, and beam materials. Yes. The shock absorber 22 decelerates the car 12 safely and stops the car 12 when the car 12 is lowered beyond a predetermined position. The shock absorber 26 decelerates and stops the counterweight 14 when the counterweight 14 descends beyond a predetermined position.

  FIG. 4A is a diagram illustrating a first configuration example of the shock absorber 22 and the guide device 17 of the compensating rope guide device according to the present embodiment. The above described symbols represent the same elements. The guide device 17 is directly fixed to the plunger 20 by the frame 35 and the bracket 19, and moves up and down in conjunction with the expansion and contraction of the plunger 20. The frame 35 is fixed to the bracket 19 and supports the guide device 17.

  Further, the shock absorber 22 causes the plunger 20 to protrude from the buffer body 21 to the top dead center of the plunger 20, and the plunger 20 whose upper end is pushed down by the lowermost part of the car 12 is inserted into the buffer body 21. The buffer main body 21 encloses oil, for example, and receives a downward force downward from the plunger 20 by a hydraulic resistance force. The buffer main body 21 has a compressed elastic body (for example, a spring coil). The shock absorber 22 causes the elastic repulsive force upward from the bottom of the pit portion 10 to act on the plunger 20 by the elastic body of the buffer main body 21 to return the plunger 20 to the top dead center. The plunger 24 and buffer body 25 of the shock absorber 26 are substantially the same as the plunger 20 and buffer body 21 of the shock absorber 22, respectively. The guide device 18 (FIG. 1) is directly fixed to the plunger 24 by a frame and bracket 23.

  FIG. 4B is a diagram illustrating a second configuration example of the shock absorber 22 and the guide device 17 of the compensating rope guide device according to the present embodiment. The above described symbols represent the same elements. The guide device 17 further includes a frame 35 and a spring coil 40 (elastic body) provided between the frame 35 and the bottom 39 of the pit portion 10, and the spring coil 40 is in a compressed state and is elastic. The frame 35 is urged upward by the repulsive force.

  In FIG. 2, detectors 41 and 42 that detect interference with the car 12 and the counterweight 14 may be provided in the guide devices 17 and 18, respectively. As an example, the detectors 41 and 42 may be sensors that detect contact of an object such as contact switches. The detectors 41 and 42 notify the control unit 28 of a detection signal through a wiring (not shown). The control unit 28 may send a control signal instructing operation start to the shock absorbers 22 and 26 in synchronization with reception of the detection signal.

  Next, the operation of the elevator (FIGS. 1 to 4) according to the present embodiment having the above-described configuration will be described.

  The elevator causes the car 12 to normally travel by normal operation. Since the movable compensator chain guide device 1 (FIG. 1) is configured such that the guide devices 17 and 18 are telescopic, the counterweight 14 is displaced downward in synchronization with the operation of the counterweight 14 compressing the shock absorber 26. 14 and the buffer 26 can be avoided. Similarly, in synchronism with the operation of the car 12 compressing the shock absorber 22, the plunger 20 is displaced downward, and interference between the car 12 and the shock absorber 22 can be avoided.

  As a result, during normal traveling, the height of the guide devices 17 and 18 can be set to a height position away from the pit surface (the bottom surface of the pit portion 10), and the compensator chain 16 is guided to the guide devices 17 and 18 Riding can be prevented.

  When the car 12 is raised to the top floor and when it is lowered to the bottom floor, the rope length of the portion of the main rope 13 from the hoisting machine 15 to the car 12 and the counterweight 14 from the hoisting machine 15 There is an extreme difference in the rope length. In high-rise buildings, the load applied to the hoisting machine 15 by the tail cord 27 also varies between the uppermost floor and the lowermost floor. Although there may be extreme weight imbalance between the car 12 side and the counterweight 14 side, the compensator chain 16 compensates for the weight imbalance.

  Generally, a high-rise building where an elevator is installed may be shaken by strong winds or earthquakes, and the main rope 13 and the compensator chain 16 may resonate due to the shaking of the hoistway 11. Vibration due to the traveling of the car 12 also occurs.

  Assuming that the guide devices 17 and 18 are provided in the range of the curved portion of the compensator chain 16 in FIG. 2, when the deflection amount of the compensator chain 16 increases, the curved portion of the compensator chain 16 becomes the guide device 17, A phenomenon of climbing on any of 18 occurs. Since the compensator chain 16 is slackened, for example, the rollers 31 to 34 of the guide device 17 bite the compensator chain 16, and the compensator chain 16 is sandwiched between the guide devices 17. When the compensator chain 16 is pinched or entangled with the guide device 17, a tensile force acts on the compensator chain 16 and breaks. Since the guide devices 17 and 18 are provided in the height range of the straight portion of the compensator chain 16, no breakage occurs when the compensator chain 16 rides on the guide devices 17 and 18.

  On the other hand, in order to avoid interference with the car 12 and the counterweight 14 of the guide devices 17 and 18, it is necessary to ensure a large pit size (pit depth) when installing the elevator. On the other hand, the smaller the pit size, the better. For this reason, when a large pit size cannot be secured in a building where an elevator is to be installed, the height of the guide devices 17 and 18 must be brought close to the bottom 39 of the pit portion 10 in order to avoid interference between the guide devices 17 and 18. I must. Making the height position of the guide devices 17 and 18 closer to the bottom 39 means that the height position of the guide devices 17 and 18 falls within the range of the curved portion of the compensator chain 16.

  According to the elevator according to the present embodiment, the guide devices 17 and 18 can be provided as much as possible, and a phenomenon in which the curved portion of the compensator chain 16 rides on the guide devices 17 and 18 can be avoided.

  Further, in the elevator according to the present embodiment, it is possible to keep the guide devices 17 and 18 from interfering with the car 12 and the counterweight 14 during the normal traveling of the car 12. Even if the guide devices 17 and 18 interfere with the car 12 and the counterweight 14, the guide devices 17 and 18 can be displaced downward in synchronization with the buffer stroke of the plungers 20 and 24. Therefore, according to the compensating rope guide device and elevator according to the present embodiment, even when the compensator chain 16 is stretched between the car 12 and the counterweight 14, the height of the straight portion of the compensator chain 16 remains as shown in FIG. Since the position is far from the pit surface, the pit size of the building is not increased, and the elevator can be installed avoiding interference.

  As described above, according to the compensating rope guiding device and the elevator according to the present embodiment, the guiding devices 17 and 18 can be installed upward in the pit portion 10.

  In the above embodiment, the compensation chain 16 is used as an example of the compensation cable. However, the compensation cable guiding device according to the embodiment may use a compensation rope as the compensation cable. In the case where a compen- sion rope is used, the elevator according to the embodiment is provided with a compen- sive sheave in which a compen- sion rope is wound around the pit portion 10.

  Further, the guide device for the compensating rope according to the embodiment has a structure in which a protruding portion is provided on the bottom of each of the cage and the counterweight, and the protruding portion pushes a vertical bracket attached to the plunger. Good. As the protruding portion, a rod body protruding downward and attached to the frame of the car frame and the counterweight may be used.

  In the example of FIG. 2, a different roping method may be used. For example, two car lower sheaves may be pivotally supported on the car frame lower beam of the car 12. The guide devices 17 and 18 are provided so as not to interfere with the car lower sheave.

  The content of FIGS. 1-4 is an illustration and is not limited to them. The illustrated structure can be variously modified. The dimensions of the brackets 19 and 23 are appropriately changed between the drawings.

  The shock absorbers 22 and 26 may be provided with a plurality of stages of plungers. A leaf spring may be provided between the frame 35 and the bottom 39 as an elastic body instead of the spring coil 40 of FIG. Alternatively, an elastic member such as rubber or an actuator may be provided as the elastic body.

  In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 1 ... Movable compensation chain guide apparatus, 11 ... Hoistway, 12 ... Car, 13 ... Main rope (main rope), 14 ... Counterweight, 15 ... Hoisting machine, 16 ... Compensation chain (compensation rope), 17, 18 ... Guide device (guide part), 19, 23 ... Bracket (connector), 20, 24 ... Plunger, 21, 25 ... Buffer body (buffer body), 22, 26 ... Buffer.

In order to solve such a problem, according to one embodiment of the present invention, an elevator car that moves up and down a hoistway having a pit portion, a counterweight connected to the car by a main rope, the counterweight and the counterweight A compensating cable connected to a cage to compensate for an imbalance in the weight of the main rope, a guide part provided in the pit portion at a height range of a straight portion where the compensating cable hangs down, A plunger having a plunger fixed to the guide portion with a connector and a shock absorber body for moving the plunger up and down, a frame body fixed to the connector and supporting the guide portion, and the frame body and the pit portion and an elastic member disposed between the bottom for biasing the frame body upwardly, said guide portion by expansion and contraction of the plunger of the shock absorber is guided device of the compensation cord, characterized in that vertical movement is provided .

According to another embodiment of the present invention, an elevator car that moves up and down a hoistway having a pit portion, a counterweight connected to the car by a main rope, and the car and the counterweight are driven up and down. A hoisting machine wound around the main rope, a compensating rope connected to the counterweight and the cage to compensate for an imbalance in the weight of the main rope due to the hoisting drive of the hoisting machine, and the compensating rope A guide portion that is provided in the pit portion in the range of the height of the straight portion where the pendant drops and suppresses the deflection of the compensation cable, a plunger that is fixed to the guide portion with a connector, and a shock absorber body that moves the plunger up and down. comprising a shock absorber, and fixed to said coupling frame for supporting the guide portion, and an elastic member that urges the frame body upwardly disposed between the frame and the bottom of the pit portion, said The plunge of the shock absorber The guide portion by the expansion and contraction of the elevator, characterized in that the vertical movement is provided.

Claims (10)

The elevator car that goes up and down the hoistway with the pit,
A counterweight connected to the car by a main rope,
A compensating cable connected to the counterweight and the car to compensate for an imbalance in the weight of the main cable;
A guide portion that is provided in the pit portion in a height range of a straight line portion where the compensation rope hangs down and suppresses the deflection of the compensation rope;
And a shock absorber having a plunger fixed to the guide portion with a connector and a shock absorber body for moving the plunger up and down,
A guide device for a compensating rope, wherein the guide portion moves up and down by expansion and contraction of the plunger of the shock absorber. A frame that is fixed to the connector and supports the guide part;
An elastic body provided between the frame body and the bottom of the pit portion;
2. The compensating rope guiding apparatus according to claim 1, wherein the elastic body biases the frame body upward.   2. The guide device for a compensating rope according to claim 1, wherein the guide portion and the shock absorber are provided for each of the car and the counterweight. The guide part is
2. The lower part of the lowermost part of the car and the lowermost part of the counterweight, and the lower part is provided below the top dead center of the plunger of the shock absorber. The compensation cable guide device described.   2. The compensating rope guiding apparatus according to claim 1, wherein the guiding portion moves up and down within a range of a buffer stroke of a plunger of the shock absorber. The guide part is
A pair of rollers parallel to each other, and another pair of rollers parallel to each other having an axis that is provided above or below the pair of rollers and intersects the axial direction of the rollers, respectively. The guide device for compensating ropes according to 1.   The compensating rope guide device according to claim 1, wherein a downward protruding portion is provided on each of the cage and the counterweight, and the plunger is expanded and contracted by the protruding portion. The elevator car that goes up and down the hoistway with the pit,
A counterweight connected to the car by a main rope,
A hoisting machine wound around the main rope that drives up and down these cages and counterweights;
A compensating rope connected to the counterweight and the cage to compensate for an imbalance in the weight of the main rope due to the hoisting drive of the hoisting machine;
A guide portion that is provided in the pit portion in a height range of a straight line portion where the compensation rope hangs down and suppresses the deflection of the compensation rope;
And a shock absorber having a plunger fixed to the guide portion with a connector and a shock absorber body for moving the plunger up and down,
The elevator characterized in that the guide part moves up and down by expansion and contraction of the plunger of the shock absorber. The guide part is
9. The lower part of the lowermost part of the car and the lowermost part of the counterweight, which is lower than the lower one, and is provided below the top dead center of the plunger of the shock absorber. The elevator described.   The elevator according to claim 8, wherein the guide portion moves up and down within a range of a buffer stroke of a plunger of the shock absorber.

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