JP2014213980A - Cage movement prevention tool for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a movement prevention tool for an elevator cage, which can easily prevent movement of a cage by a simple configuration regardless of the position of the cage during the maintenance of the elevator.SOLUTION: A cage movement prevention tool 31 for an elevator prevents movement of a cage 8 out of the cage 8 and a balance weight 9, which are lifted/lowered in directions opposite to each other, during the maintenance of the elevator. The cage movement prevention tool 31 comprises a cage guide rail 12, and a cage-side wedge 32 which is provided in the cage 8 and which is inserted between it and a cage guide shoe 15 moved while being brought into contact with the cage guide rail 12.

Description

  The present invention relates to an elevator car movement preventer for preventing movement of a car during maintenance of the elevator.

  Conventionally, a locking member has been attached to the upper part of the car guide rail that guides the car so that the car does not move upward accidentally when the worker is performing maintenance work on the car. In addition, an elevator car fixing device is known in which a stopper member is attached to the upper part of the car and the stopper member is locked to the locking member from below (see, for example, Patent Document 1).

JP 2001-151432 A

However, since it is necessary to attach the locking member to the car guide rail and the stopper member to the car, not only the structure of the car fixing device becomes complicated, but also the installation work of the car fixing device takes time. End up.
In addition, depending on the position where the locking member is attached, the existing rail bracket that supports the car guide rail may become an obstacle and the locking member cannot be attached to the car guide rail.

  The present invention has been made to solve the above-described problems, and can easily prevent the movement of the car with a simple configuration regardless of the position of the car during maintenance of the elevator. The purpose is to obtain an elevator car movement prevention device.

  An elevator car movement prevention device according to the present invention is an elevator car movement prevention device that prevents movement of a car during maintenance of an elevator among a car and a counterweight that are lifted and lowered in opposite directions, and is a car guide rail. And a wedge member inserted between the car sliding member which is provided on the car and is moved while being in contact with the car guide rail.

  An elevator car movement prevention device according to the present invention is an elevator car movement prevention device for preventing movement of a car during maintenance of an elevator among a car and a counterweight that are lifted and lowered in opposite directions. A wedge member is provided between the guide rail and a counterweight sliding member that is provided on the counterweight and is moved while contacting the counterweight guide rail.

  According to the elevator car movement preventing device according to the present invention, only the wedge member is inserted between the car guide rail and the car sliding member, or between the counterweight guide rail and the counterweight sliding member. Thus, the movement of the car can be prevented. This makes it possible to easily prevent the car from moving with a simple configuration, regardless of the position of the car during maintenance of the elevator.

It is a block diagram which shows the elevator by Embodiment 1 of this invention. It is a front view which shows the cage | basket | car of FIG. It is sectional drawing along the III-III line of FIG. It is a front view which shows the counterweight of FIG. It is sectional drawing along the VV line of FIG. It is a perspective view which shows the cage | basket | car movement prevention tool installed in the cage | basket guide shoe of FIG. It is a perspective view which shows the state by which the cage | basket | car movement prevention tool by Embodiment 2 of this invention is installed in the counterweight guide shoe.

Embodiment 1 FIG.
1 is a block diagram showing an elevator according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided in the upper part of the hoistway 1. In the machine room 2, a hoisting machine (driving device) 4 having a driving sheave 3, a deflecting wheel 5 arranged away from the driving sheave 3, and a control device 6 that controls the operation of the elevator are provided. It has been.

  A plurality of suspension means 7 for suspending a car 8 and a counterweight 9 are wound around the drive sheave 3 and the deflecting wheel 5 in the hoistway 1. For example, a rope or a belt is used as the suspension means 7. In this example, one end of the suspension means 7 is connected to the upper part of the car 8, and the other end of the suspension means 7 is connected to the upper part of the counterweight 9. Thereby, in this example, the suspension system of the car 8 and the counterweight 9 by the suspension means 7 is a 1: 1 roping system. The car 8 and the counterweight 9 are moved up and down while interlocking with each other in the opposite directions in the opposite directions when the driving sheave 3 is rotated.

  A car shock absorber 10 located below the car 8 and a counterweight shock absorber 11 located below the counterweight 9 are provided at the bottom (pit part) of the hoistway 1. The car shock absorber 10 reduces the impact given to the car 8 when the car 8 receives a collision. The counterweight buffer 11 reduces the impact applied to the counterweight 9 when the counterweight 9 is impacted.

  FIG. 2 is a front view showing the car 8 of FIG. 3 is a cross-sectional view taken along line III-III in FIG. When the car 8 is moved up and down, it is guided by a pair of car guide rails 12 installed in the hoistway 1 along the vertical direction. The car 8 is disposed between the pair of car guide rails 12. When viewed along the longitudinal direction of the car guide rail 12, each car guide rail 12 has a rail flange portion 12a facing the side surface of the car 8 and an intermediate portion of the rail flange portion 12a as shown in FIG. The rail has a T-shaped cross section having a rail guide portion 12 b protruding toward the car 8.

  The car 8 is provided with a plurality of car guide devices 13. Each car guide device 13 is moved along the car guide rail 12 together with the car 8 while being guided by the car guide rail 12. In this example, as shown in FIG. 2, a car guide device 13 guided by one car guide rail 12 is provided at each of the upper and lower parts of the car 8, and the car guide device guided by the other car guide rail 12. 13 is provided in each of the upper and lower parts of the car 8, and a total of four car guide devices 13 are provided in the car 8.

  As shown in FIG. 3, each car guide device 13 includes a car mounting bracket (car mounting member) 14 attached to the car 8, and a car guide shoe (which is provided on the car mounting bracket 14 and contacts the car guide rail 12 ( Car sliding member) 15.

  The car mounting bracket 14 is provided with a shoe housing portion 16 for housing the car guide shoe 15. The car mounting bracket 14 is attached to the car 8 with the shoe housing portion 16 facing the car guide rail 12.

  The car guide shoe 15 is attached to the car mounting bracket 14 while being housed in the shoe housing portion 16. The car guide shoe 15 is provided with a rail insertion groove 17 into which the rail guide portion 12b is inserted. The car guide shoe 15 is moved together with the car 8 while bringing the inner surface of the rail insertion groove 17 into contact with the rail guide portion 12 b of the car guide rail 12. The inner surface of the rail insertion groove 17 of the car guide shoe 15 is composed of three sliding surfaces that are in contact with both side surfaces and end surfaces of the rail guide portion 12b in the width direction.

  FIG. 4 is a front view showing the counterweight 9 of FIG. FIG. 5 is a cross-sectional view taken along the line VV in FIG. When the counterweight 9 is raised and lowered, it is guided by a pair of counterweight guide rails 22 installed in the hoistway 1 along the vertical direction. The counterweight 9 is disposed between the pair of counterweight guide rails 22. Each counterweight guide rail 22 has a rail flange portion 22a facing the side surface of the counterweight 9, as shown in FIG. 5 when viewed along the longitudinal direction of the counterweight guide rail 22, and a rail flange. The rail has a T-shaped cross section having a rail guide portion 22b protruding from the middle portion of the portion 22a toward the counterweight 9.

  The counterweight 9 is provided with a plurality of counterweight guide devices 23. Each counterweight guide device 23 is moved along the counterweight guide rail 22 together with the counterweight 9 while being guided by the counterweight guide rail 22. In this example, as shown in FIG. 4, a counterweight guide device 23 guided by one counterweight guide rail 22 is provided at the upper part and the lower part of the counterweight 9, and the other counterweight guide rail is provided. The counterweight guide devices 23 guided to the counterweight 22 are respectively provided on the upper and lower portions of the counterweight 9, and a total of four counterweight guide devices 23 are provided on the counterweight 9.

  As shown in FIG. 5, each counterweight guide device 23 is provided on a counterweight mounting bracket (a counterweight mounting member) 24 attached to the counterweight 9 and a counterweight mounting bracket 24. A counterweight guide shoe (a counterweight sliding member) 25 that contacts the counterweight guide rail 22 is provided.

  The counterweight mounting bracket 24 is provided with a shoe accommodating portion 26 that accommodates a counterweight guide shoe 25. The counterweight mounting bracket 24 is attached to the counterweight 9 with the shoe housing portion 26 facing the counterweight guide rail 22.

  The counterweight guide shoe 25 is attached to the counterweight mounting bracket 24 while being accommodated in the shoe accommodating portion 26. The counterweight guide shoe 25 is provided with a rail insertion groove 27 into which the rail guide portion 22b is inserted. The counterweight guide shoe 25 is moved together with the counterweight 9 while bringing the inner surface of the rail insertion groove 27 into contact with the rail guide portion 22b of the counterweight guide rail 22. The inner surface of the rail insertion groove 27 of the counterweight guide shoe 25 is composed of three sliding surfaces that are in contact with both side surfaces and end surfaces of the rail guide portion 22b in the width direction.

  At the time of maintenance of the elevator, a maintenance worker may get on the car 8 with the car 8 stopped in the hoistway 1 in order to perform maintenance work on the equipment installed in the hoistway 1. Therefore, when the maintenance worker performs work on the car 8 during the maintenance of the elevator, a car movement preventing tool for preventing the car 8 from moving is installed on at least one of the plurality of guide shoes 15. In this example, the car movement preventing tool is installed on each of the two guide shoes 15 provided on the upper part of the car 8 among the four guide shoes 15 provided on the car 8.

  FIG. 6 is a perspective view showing a car movement preventing tool installed on the car guide shoe 15 of FIG. The car movement prevention tool 31 has a car-side wedge (wedge member) 32 that is inserted between the rail guide portion 12 b of the car guide rail 12 and the inner surface of the rail insertion groove 17. In this example, a cage wedge 32 is inserted from above between one side surface of the rail guide portion 12b and the sliding surface of the rail insertion groove 17 that contacts one side surface of the rail guide portion 12b.

  The car-side wedge 32 is provided with a first contact surface 33 and a second contact surface 34 that is inclined at an acute angle with respect to the first contact surface 33. Accordingly, the thickness dimension of the car-side wedge 32 between the first and second contact surfaces 33 and 34 is continuously reduced from the rear end portion of the car-side wedge 32 toward the front end portion.

  The material constituting the car-side wedge 32 is only an elastic material. As the elastic material constituting the car-side wedge 32, for example, rubber or resin is used.

  The car-side wedge 32 is arranged such that the first guide surface 33 contacts the rail guide portion 12b of the car guide rail 12 and the second contact surface 34 contacts the inner surface of the rail insertion groove 17 while It is pushed between the guide shoe 15. The width dimension of the car-side wedge 32 is smaller than the width dimension of the sliding surface with which the second contact surface 34 comes into contact among the three sliding surfaces of the rail insertion groove 17. Further, the car-side wedge 32 is frictionally held between the rail guide portion 12b and the car guide shoe 15 with the tip portion inserted from above between the rail guide portion 12b and the car guide shoe 15. As a result, the car 8 is held with respect to the car guide rail 12, and the car 8 is raised (that is, the car is inserted in a direction in which the insertion amount of the car-side wedge 32 between the car guide shoe 15 and the rail guide portion 12b increases). 8 is prevented from moving).

  When the car movement prevention tool 31 is installed on the car guide shoe 15, first, the car 8 is moved at a lower speed than during normal operation, and the car 8 is stopped near the maintenance target device. Thereafter, the maintenance worker on the car 8 pushes the car-side wedge 32 between the car guide shoe 15 and the rail guide portion 12b from above. As a result, the car movement prevention tool 31 is installed on the car guide shoe 15. When the car movement prevention tool 31 is installed on the car guide shoe 15, the car 8 is held against the car guide rail 12, and the car 8 is prevented from rising. A maintenance worker on the car 8 performs maintenance work on the maintenance target device in a state where the car movement prevention tool 31 is installed on the car guide shoe 15.

  After the maintenance work is completed, the maintenance worker removes the car-side wedge 32 from between the car guide shoe 15 and the rail guide portion 12b. At this time, when the car 8 is lowered, the car-side wedge 32 is easily detached. Accordingly, the holding of the car 8 with respect to the car guide rail 12 is released, and the car 8 and the counterweight 9 can move in the hoistway 1.

  In such a car movement preventing tool 31, the car 8 wedge 32 is inserted from above between the rail guide portion 12 b of the car guide rail 12 and the car guide shoe 15, thereby preventing the car 8 from rising. The elevator 8 can be easily prevented from rising when the elevator is maintained. Further, regardless of the position of the car 8, the car-side wedge 32 can be inserted between the rail guide portion 12b and the car guide shoe 15, and the car 8 can be prevented from rising more reliably. it can.

  Further, since the material constituting the car-side wedge 32 is only an elastic material, when the car-side wedge 32 is inserted between the car guide shoe 15 and the rail guide portion 12b, the car guide shoe 15 and the rail. It is possible to prevent the guide portion 12b from being damaged. Thereby, the deterioration of the ride comfort of the passenger in the car 8 can be prevented.

  In the above example, the car movement prevention tool 31 is installed on each of the two car guide shoes 15 provided on the upper part of the car 8, but the two provided on the upper part of the car 8 Of the car guide shoes 15, the car movement preventing tool 31 may be installed only in one of the car guide shoes 15.

  In the above example, the number of the car-side wedges 32 inserted between the common car guide shoe 15 and the rail guide part 12b is one. However, the common car guide shoe 15 and the rail guide part 12b are common. A plurality of car-side wedges 32 may be inserted between the two. For example, one cage wedge 32 may be inserted between each of the three sliding surfaces constituting the inner surface of the rail insertion groove 17 of the car guide shoe 15 and the rail guide portion 12b. A plurality of car-side wedges 32 may be inserted side by side between the 17 common sliding surfaces and the rail guide portion 12b.

  Alternatively, the car 8 may be prevented from descending by inserting a car-side wedge 32 from below rather than from above between the rail guide portion 12b of the car guide rail 12 and the car guide shoe 15. In this way, it is possible to easily prevent the car 8 from being lowered during the maintenance of the elevator that performs maintenance work on the car shock absorber 10 positioned below the car 8, for example. In this case, the car movement prevention tool 31 is installed in at least one of the two car guide shoes 15 provided in the lower part of the car 8. In this case, the number of the car-side wedges 32 inserted between the common car guide shoe 15 and the rail guide part 12b may be one or may be plural.

  A car-side wedge 32 is inserted from above between the car guide shoe 15 and the rail guide part 12b provided at the upper part of the car 8, and the car guide shoe 15 and the rail guide part 12b provided at the lower part of the car 8 are inserted. By inserting the car-side wedge 32 from below, the car 8 may be prevented from rising and falling. In this case, the car movement prevention tool 31 is installed on at least one of the two car guide shoes provided on the upper part of the car 8 and on at least one of the two car guide shoes provided on the lower part of the car 8. In this case, the number of the car-side wedges 32 inserted between the common car guide shoe 15 and the rail guide part 12b may be one or may be plural.

Embodiment 2. FIG.
In the first embodiment, the car-side wedge 32 of the car movement prevention tool 31 is inserted between the rail guide portion 12 b of the car guide rail 12 and the car guide shoe 15 to hold the car 8 with respect to the car guide rail 12. This prevents the movement of the car 8, but inserts a counterweight side wedge of the car movement prevention tool between the rail guide portion 22b of the counterweight guide rail 22 and the counterweight guide shoe 25. The cage 8 may be prevented from moving by holding the counterweight 9 against the counterweight guide rail 22.

  That is, FIG. 7 is a perspective view showing a state in which the car movement preventing device according to the second embodiment of the present invention is installed on the counterweight guide shoe 25. During maintenance of the elevator, the counterweight 9 is held by the car movement prevention tool 41 with respect to the counterweight guide rail 22. In this example, the car 8 is not directly held with respect to the car guide rail 12 by the car movement prevention tool 31. The car movement preventing device 41 includes a counterweight-side wedge (wedge member) 42 inserted between the rail guide portion 22b of the counterweight guide rail 22 and the inner surface of the rail insertion groove 27 of the counterweight guide shoe 25. Have. In this example, a counterweight-side wedge 42 is inserted from below between one side surface of the rail guide portion 22b and a sliding surface of the rail insertion groove 27 that contacts one side surface of the rail guide portion 22b. .

  The car movement preventing device 41 is installed on at least one of the plurality of counterweight guide shoes 25 provided on the counterweight 9. In this example, of the four counterweight guide shoes 25 provided on the counterweight 9, the car movement preventing device 41 is provided on each of the two counterweight guide shoes 25 provided on the lower part of the counterweight 9. is set up.

  The counterweight-side wedge 42 is provided with a first contact surface 43 and a second contact surface 44 that is inclined at an acute angle with respect to the first contact surface 43. Thereby, the thickness dimension of the counterweight-side wedge 42 between the first and second contact surfaces 43, 44 is continuously reduced from the rear end portion to the tip portion of the counterweight-side wedge 42. Yes.

  The material constituting the counterweight wedge 42 is only an elastic material. As an elastic material constituting the counterweight side wedge 42, for example, rubber or resin is used.

  The counterweight-side wedge 42 guides the rail while bringing the first contact surface 43 into contact with the rail guide portion 22b of the counterweight guide rail 22 and bringing the second contact surface 44 into contact with the inner surface of the rail insertion groove 27. It is pushed between the portion 42b and the counterweight guide shoe 25. The width dimension of the counterweight side wedge 42 is smaller than the width dimension of the sliding surface with which the second contact surface 44 comes into contact among the three sliding surfaces of the rail insertion groove 27. Further, the counterweight-side wedge 42 is rubbed between the rail guide portion 22b and the counterweight guide shoe 25 with the tip portion inserted from above between the rail guide portion 22b and the counterweight guide shoe 25. Is retained. As a result, the counterweight 9 is held against the counterweight guide rail 22, and the counterweight side wedge 42 with respect to the lowering of the counterweight 9 (that is, between the counterweight guide shoe 25 and the rail guide portion 22b). The movement of the counterweight 9 in the direction in which the amount of insertion becomes larger is prevented. Thereby, the raise of the cage | basket | car 8 is prevented.

  When the car movement preventing device 41 is installed on the counterweight guide shoe 25, first, as in the first embodiment, the car 8 is stopped near the equipment to be maintained, and then the counterweight guide shoe 25 is used. And the rail guide portion 22b, the counterweight side wedge 42 is pushed in from below. As a result, the car movement prevention tool 41 is installed on the counterweight guide shoe 25, and the counterweight 9 is prevented from lowering and the car 8 is prevented from rising. A maintenance worker on the car 8 performs equipment maintenance work in a state where the car movement prevention tool 41 is installed on the counterweight guide shoe 25.

  After the maintenance work is completed, the counterweight side wedge 42 is removed from between the counterweight guide shoe 25 and the rail guide portion 22b. At this time, when the counterweight 9 is raised, the counterweight-side wedge 42 is easily detached. Thereby, the holding of the counterweight 9 with respect to the counterweight guide rail 22 is released, and the car 8 and the counterweight 9 can move in the hoistway 1.

  Thus, even if the counterweight side wedge 42 is inserted from below between the rail guide portion 22b of the counterweight guide rail 22 and the counterweight guide shoe 25, as in the first embodiment, The raising of the car 8 can be easily prevented with a simple configuration. Further, regardless of the position of the counterweight 9, the counterweight-side wedge 42 can be inserted between the rail guide portion 22 b and the counterweight guide shoe 25, so that the car can be placed at any position. The rise of 8 can be prevented more reliably.

  Further, since the material constituting the counterweight-side wedge 42 is only an elastic material, when the counterweight-side wedge 42 is inserted between the counterweight guide shoe 25 and the rail guide portion 22b, It is possible to prevent the counterweight guide shoe 25 and the rail guide portion 22b from being damaged. Thereby, the increase in the vibration produced by the movement of the counterweight 9 can be suppressed, and the deterioration of the riding comfort of the passengers who ride in the car 8 during normal operation can be prevented.

  In the above example, the car movement prevention device 41 is installed in each of the two counterweight guide shoes 25 provided in the lower part of the counterweight 9. Of the two counterweight guide shoes 25 provided on the counterweight, the car movement prevention tool 41 may be installed only on one counterweight guide shoe 25.

  Also, the number of counterweight-side wedges 42 inserted between the common counterweight guide shoe 25 and the rail guide portion 22b may be plural. For example, one counterweight side wedge 42 may be inserted between each of the three sliding surfaces constituting the inner surface of the rail insertion groove 27 of the counterweight guide shoe 25 and the rail guide portion 22b. A plurality of counterweight-side wedges 42 may be inserted side by side between the common sliding surface of the rail insertion groove 27 and the rail guide portion 22b.

  Further, a counterweight-side wedge 42 may be inserted between the rail guide portion 22b of the counterweight guide rail 22 and the counterweight guide shoe 25 from above rather than from below. In this way, by preventing the counterweight 9 from rising, the car 8 can be prevented from descending. For example, an elevator that performs maintenance work on the car shock absorber 10 located below the car 8 can be prevented. It is possible to easily prevent the car 8 from descending during maintenance. In this case, the car movement prevention tool 41 is installed on at least one of the two car guide shoes 25 provided on the upper part of the counterweight 9. In this case, the number of the car-side wedges 32 inserted between the common car guide shoe 15 and the rail guide part 12b may be one or may be plural.

  Further, a counterweight-side wedge 42 is inserted from above between the counterweight guide shoe 25 and the rail guide portion 22 b provided at the upper part of the counterweight 9, and the fishing provided at the lower part of the counterweight 9. By inserting the counterweight-side wedge 42 between the counterweight guide shoe 25 and the rail guide portion 22b from below, both the raising and lowering of the car 8 may be prevented. In this case, at least one of the two counterweight guide shoes 25 provided on the upper portion of the counterweight 9 and at least one of the two counterweight guide shoes 25 provided on the lower portion of the counterweight 9, A car movement prevention tool 41 is installed. In this case, the number of counterweight-side wedges 42 inserted between the common counterweight guide shoe 25 and the rail guide portion 22b may be one or plural.

Moreover, in each said embodiment, although the suspension method of the cage | basket | car 2 and the balance weight by the suspension means 7 is made into the 1: 1 roping method, while providing the cage | basket | car suspension car in the cage | basket | car 8, the balance weight 9 is provided. The suspension means is provided with a counterweight suspension vehicle, and one end portion and the other end portion of the suspension means 7 wound around the car suspension vehicle and the counterweight suspension vehicle are respectively connected to the upper portion of the hoistway 1. The hanging method of the car 8 and the counterweight 9 according to 7 may be a 2: 1 roping method.
Further, in each of the above embodiments, the present invention is applied to an elevator in which the machine room 2 in which the hoisting machine 4 and the like are installed is provided in the upper part of the hoistway 1. The present invention may be applied to a machine room-less elevator in which equipment such as the machine 4 is installed and the machine room 2 is eliminated.

  1 hoistway, 8 car, 9 counterweight, 12 car guide rail, 15 car guide shoe (car sliding member), 22 counterweight guide rail, 25 counterweight guide shoe (balanced weight sliding member), 31, 41 Car movement prevention tool, 32 Car side wedge (wedge member), 42 Counterweight side wedge (wedge member).

Claims (3)

Among elevator cars and counterweights that are raised and lowered in opposite directions, an elevator car movement prevention device that prevents the movement of the car during elevator maintenance,
An elevator car movement prevention device comprising a car guide rail and a wedge member provided between the car guide rail and a car sliding member that is moved while contacting the car guide rail. Among elevator cars and counterweights that are raised and lowered in opposite directions, an elevator car movement prevention device that prevents the movement of the car during elevator maintenance,
An elevator car comprising a counterweight guide rail and a wedge member that is inserted between the counterweight guide rail and the counterweight slide member that is moved while contacting the counterweight guide rail. Movement prevention tool.   The elevator car movement preventing device according to claim 1 or 2, wherein the material constituting the wedge member is only an elastic material.

Images