Elevator

Abstract

To provide an elevator capable of improving the efficiency of replacement work of a lower terminal switch device.SOLUTION: An elevator comprises a guide rail 3 for a lower end switch device provided in the elevator shaft 6 and extending in the height direction, and a lower end point switch device 4 having a lower end point switch 401 that moves along a guide rail 3 for the lower end point switch device between a detection position where the lower end point switch 401 detects an elevator car 2 and a replacement position below the detection position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an elevator with a bottom end switch device. [Background technology]

[0002] BACKGROUND ART Conventionally, a lower end point switch device including a lower end point switch is known, and the lower end point switch is fixed to a wall of a hoistway (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-13901 Summary of the Invention [Problem to be solved by the invention]

[0004] When a lower end point switch device is used for a long period of time, the lower end point switch device is replaced periodically. The lower end point switch device is located higher than the worker standing on the floor of the pit of the elevator shaft. However, in the configuration of the lower end point switch device described in Patent Document 1, the lower end point switch device is fixed to the wall of the elevator shaft, so the worker must stand on a stepladder in the pit to replace the lower end point switch. This has led to the problem of inefficient replacement of the lower end point switch device.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an elevator that can improve the efficiency of the replacement work of the lower terminal switch device. [Means for solving the problem]

[0006] The elevator according to the present disclosure includes a guide rail for a lower terminal switch device provided in a hoistway and extending in the vertical direction, and a lower terminal switch device having a lower terminal switch, which moves along the guide rail for the lower terminal switch device between a detection position where the lower terminal switch detects the elevator car and a replacement position below the detection position. [Effects of the Invention]

[0007] According to the elevator of the present disclosure, the efficiency of the replacement work of the lower terminal switch device can be improved. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a configuration diagram showing the main parts of an elevator according to a first embodiment. [Figure 2] FIG. 2 is a front view showing the lower end switch device of FIG. 1. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. [Figure 4] 2 is a diagram showing the configuration of the lower end point switch device of FIG. 1 in a state where it has moved downward. FIG. [Figure 5] FIG. 2 is a block diagram showing the elevator of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 Fig. 1 is a configuration diagram showing the main parts of an elevator according to embodiment 1. The elevator according to embodiment 1 includes a pair of car guide rails 1, a car 2, a pair of lower end point switch device guide rails 3, a lower end point switch device 4, and a lower end point switch device detection device 5. Fig. 1 shows one of the pair of car guide rails 1, and one of the pair of lower end point switch device guide rails 3.

[0010] Each car guide rail 1 is provided in the elevator shaft 6. Each car guide rail 1 extends in the height direction. A pair of car guide rails 1 are arranged parallel to each other. A pair of car guide rails 1 are arranged spaced apart from each other in the horizontal direction.

[0011] The car 2 is provided in a hoistway 6. The car 2 moves in the height direction in the hoistway 6 while being guided by a car guide rail 1. The movement of the car 2 is performed by driving a hoisting machine (not shown).

[0012] Each lower end point switch device guide rail 3 is provided at the bottom of the elevator shaft 6. Each lower end point switch device guide rail 3 extends in the height direction. The pair of lower end point switch device guide rails 3 are arranged parallel to each other. The pair of lower end point switch device guide rails 3 are arranged spaced apart from each other in the horizontal direction.

[0013] The lower end point switch device 4 is provided at the bottom of the hoistway 6. The lower end point switch device 4 moves vertically at the bottom of the hoistway 6 while being guided by the lower end point switch device guide rail 3. The lower end point switch device 4 is moved by a worker standing on the floor of the hoistway 6, who grasps the lower end point switch device 4.

[0014] The lower end point switch device 4 has a plurality of lower end point switches 401 and a lower end point switch box 402. Each lower end point switch 401 is attached to a lower end point switch box 402. Therefore, when the lower end point switch box 402 moves, each lower end point switch 401 moves.

[0015] Fig. 2 is a front view showing the lower end point switch device 4 of Fig. 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2. The lower end point switch device 4 has a pair of upper guide portions 403 and a pair of lower guide portions 404. Note that Figs. 2 and 3 do not show the lower end point switch 401.

[0016] Each upper guide portion 403 is provided on the upper portion of the lower end point switch box 402. A pair of upper guide portions 403 is provided corresponding to each of a pair of lower end point switch device guide rails 3. When the lower end point switch device 4 moves along the lower end point switch device guide rails 3, each upper guide portion 403 slides on the corresponding lower end point switch device guide rail 3.

[0017] Each lower guide portion 404 is provided at the bottom of the lower end point switch box 402. A pair of lower guide portions 404 is provided corresponding to each of the pair of lower end point switch device guide rails 3. When the lower end point switch device 4 moves along the lower end point switch device guide rails 3, each lower guide portion 404 slides on the corresponding lower end point switch device guide rail 3.

[0018] A pair of upper guide portions 403 slide on a pair of guide rails 3 for the lower end point switch device, and a pair of lower guide portions 404 slide on a pair of guide rails 3 for the lower end point switch device, thereby allowing the lower end point switch device 4 to move smoothly in the vertical direction.

[0019] The elevator according to the first embodiment includes a fixing device 7, a suspension body 8 for the lower terminal switch device, a counterweight 9 for the lower terminal switch device, and a pair of hoists 10 for the lower terminal switch device.

[0020] The fixing device 7 fixes the lower end point switch device 4 to the lower end point switch device guide rail 3. The fixing device 7 has a pair of fixing bolts 701. The pair of fixing bolts 701 are provided so that one of each corresponds to the pair of lower guide portions 404. A threaded hole (not shown) is formed through each lower guide portion 404. Each fixing bolt 701 is inserted into the corresponding threaded hole. Each fixing bolt 701 moves forward and backward relative to the corresponding lower guide portion 404 by rotating.

[0021] Each fixing bolt 701 moves forward and backward relative to the corresponding lower guide portion 404, thereby moving between a contact position and a separated position.

[0022] The contact position is the position of the fixing bolt 701 when it contacts the corresponding lower end switch device guide rail 3. The separated position is the position of the fixing bolt 701 when it is separated from the corresponding lower end switch device guide rail 3.

[0023] When each fixing bolt 701 is in the contact position, each lower guide portion 404 is fixed to the corresponding lower end point switch device guide rail 3. This causes the lower end point switch device 4 to be fixed to the lower end point switch device guide rail 3.

[0024] When each fixing bolt 701 is in the separated position, the corresponding lower guide portion 404 is released from the lower end point switch device guide rail 3. This releases the lower end point switch device 4 from the lower end point switch device guide rail 3.

[0025] The lower end switch device suspending body 8 is made of a rope. Note that the lower end switch device suspending body 8 is not limited to a rope, and may be, for example, a belt or a wire.

[0026] One longitudinal end of the lower end switch device suspending body 8 is connected to the lower end switch box 402 of the lower end switch device 4. The other longitudinal end of the lower end switch device suspending body 8 is connected to a lower end switch device counterweight 9. The longitudinal middle part of the lower end switch device suspending body 8 is wound around a pair of lower end switch device hoists 10 from above.

[0027] Each lower end point switch device hoist 10 is positioned higher than the lower end point switch device 4. The weight of the lower end point switch device 4 and the weight of the lower end point switch device counterweight 9 are the same. Therefore, by grabbing the lower end point switch device 4, an operator can easily move the lower end point switch device 4 in the height direction.

[0028] Fig. 4 is a configuration diagram showing a state in which the lower end point switch device 4 of Fig. 1 has moved downward. As the lower end point switch device 4 moves in the height direction, the lower end point switch device 4 moves between the detection position and the replacement position.

[0029] The detection position is the position of the lower terminal switch device 4 when each lower terminal switch 401 detects the elevator car 2. The replacement position is the position of the lower terminal switch device 4 when it is below the detection position. The replacement position is also a position where a worker standing on the floor of the hoistway 6 can replace the lower terminal switch device 4.

[0030] The lower end point switch device detector 5 is provided in the elevator shaft 6. The lower end point switch device detector 5 is composed of a microswitch. Note that the lower end point switch device detector 5 is not limited to a microswitch and may be another detector.

[0031] The lower end point switch device detector 5 detects that the lower end point switch device 4 is in the detection position when the lower end point switch device 4 is in the detection position. In other words, the lower end point switch device detector 5 detects that the lower end point switch device 4 is not in the detection position when the lower end point switch device 4 is not in the detection position.

[0032] Fig. 5 is a block diagram showing the elevator in Fig. 1. The elevator according to the first embodiment includes an elevator control device 11. The detection result of the lower terminal switch device detection device 5 is input to the elevator control device 11.

[0033] An external maintenance computer 12 can be connected to the elevator control device 11. The maintenance computer 12 is carried by an operator. When the lower terminal switch device detection device 5 detects that the lower terminal switch device 4 is not in the detection position and the maintenance computer 12 is connected to the elevator control device 11, the elevator control device 11 outputs a diagnosis-requiring operation signal to the maintenance computer 12.

[0034] The diagnosis-required operation signal is a signal indicating that the elevator needs to be operated diagnostically. When the diagnosis-required operation signal is input to the maintenance computer 12, an operator performs maintenance and inspection work on the elevator while performing diagnostic operation of the elevator.

[0035] Next, the procedure for replacing the lower end point switch device 4 will be described. First, the worker rotates each fixing bolt 701 to move it from the contact position to the separated position. Then, the worker grasps the lower part of the lower end point switch box 402 of the existing lower end point switch device 4 and moves the existing lower end point switch device 4 downward. This moves the existing lower end point switch device 4 from the detection position to the replacement position.

[0036] Thereafter, the worker removes the existing lower end point switch device 4 from the pair of guide rails 3 for the lower end point switch device, and attaches the new lower end point switch device 4 to the pair of guide rails 3 for the lower end point switch device.

[0037] Then, the worker grasps the lower part of the lower end point switch box 402 of the new lower end point switch device 4 and moves the new lower end point switch device 4 upward. This moves the new lower end point switch device 4 from the replacement position to the detection position. Then, the worker rotates each fixing bolt 701 to move it from the separated position to the contact position.

[0038] The worker then connects the maintenance computer 12 to the elevator control device 11. This causes the elevator control device 11 to input a diagnostic operation signal to the maintenance computer. The worker then operates the elevator control device 11 and maintenance computer 12 to perform elevator diagnostic operation while performing elevator maintenance and inspection work. The elevator maintenance and inspection work includes fine adjustment of the position of the lower terminal switch device 4. This completes the replacement work for the lower terminal switch device 4.

[0039] As described above, the elevator according to the first embodiment includes the guide rail 3 for the lower end point switch device and the lower end point switch device 4. The guide rail 3 for the lower end point switch device is provided in the hoistway 6 and extends in the vertical direction. The lower end point switch device 4 has a lower end point switch 401 and moves along the guide rail 3 for the lower end point switch device between a detection position and a replacement position. With this configuration, a worker standing on the floor of the hoistway 6 can grasp the lower end point switch device 4 and move the lower end point switch device 4 in the vertical direction. This improves the efficiency of the replacement work of the lower end point switch device 4.

[0040] Moreover, the elevator according to the first embodiment is provided with a fixing device 7 that fixes the lower terminal switch device 4 to the lower terminal switch device guide rail 3. According to this configuration, by fixing the lower terminal switch device 4 to the lower terminal switch device guide rail 3, the lower terminal switch device 4 can be fixed to the elevator shaft 6.

[0041] Moreover, the elevator according to the first embodiment is equipped with a lower terminal switch device detector 5 and an elevator control device 11. The lower terminal switch device detector 5 detects that the lower terminal switch device 4 is in the detection position. When the lower terminal switch device detector 5 detects that the lower terminal switch device 4 is not in the detection position, the elevator control device 11 outputs a diagnosis-requiring operation signal to the maintenance computer 12. With this configuration, after the replacement work of the lower terminal switch device 4 is completed, workers can more reliably perform maintenance and inspection work on the elevator while performing diagnostic operation of the elevator.

[0042] Furthermore, in the elevator according to the first embodiment, when the maintenance computer 12 is connected to the elevator control device 11, the elevator control device 11 outputs a diagnosis-requiring operation signal to the maintenance computer 12. According to this configuration, after the replacement work of the lower terminal switch device 4 is completed, the worker can more reliably perform maintenance and inspection work on the elevator while performing a diagnostic operation of the elevator.

[0043] Moreover, the elevator according to the first embodiment is equipped with a lower terminal switch device suspending body 8, a lower terminal switch device counterweight 9, and a lower terminal switch device hoist 10. One longitudinal end of the lower terminal switch device suspending body 8 is connected to the lower terminal switch device 4. The other longitudinal end of the lower terminal switch device suspending body 8 is connected to the lower terminal switch device counterweight 9. An intermediate longitudinal portion of the lower terminal switch device suspending body 8 is wound around the lower terminal switch device hoist 10. With this configuration, a worker standing on the floor of the hoistway 6 can easily move the lower terminal switch device 4 in the vertical direction by grasping the lower terminal switch device 4.

[0044] In the elevator according to the first embodiment, the lower terminal switch device 4 is moved in the height direction by the worker grasping the lower terminal switch device 4. However, this is not limited to this. For example, the elevator may be configured to include a drive device that moves the lower terminal switch device 4 in the height direction, and the worker may operate the drive device to move the lower terminal switch device 4 in the height direction.

[0045] Furthermore, in the elevator according to the first embodiment, the fixing device 7 has been described as having a pair of fixing bolts 701. However, this is not limited to this. The fixing device 7 may have any configuration as long as it can fix the lower terminal switch device 4 to the lower terminal switch device guide rail 3.

[0046] Although the elevator according to the preferred embodiment 1 has been described above, the present invention is not limited to the elevator according to the above-described embodiment 1. Various modifications and conversions can be made to the elevator according to the above-described embodiment 1 without departing from the scope of the claims.

[0047] Various aspects of the present disclosure are summarized below as appendices.

[0048] (Appendix 1) a guide rail for a lower end switch device provided in the elevator shaft and extending in the height direction; a lower end switch device having a lower end switch, the lower end switch moving along a guide rail for the lower end switch device between a detection position where the lower end switch detects the elevator car and a replacement position below the detection position; Elevator equipped with. (Appendix 2) An elevator as described in Appendix 1, which is provided with a fixing device for fixing the lower end point switch device to the guide rail for the lower end point switch device. (Appendix 3) a lower end switch device detection device for detecting when the lower end switch device is in the detection position; an elevator control device that outputs a diagnosis-required operation signal to the outside, when the lower terminal switch device detection device detects that the lower terminal switch device is not at the detection position, indicating that a diagnostic operation of the elevator is required; 1. An elevator according to claim 1 or 2, comprising: (Appendix 4) The external device is a maintenance computer carried by a worker during elevator maintenance work, 4. The elevator according to claim 3, wherein the elevator control device outputs the diagnosis-required operation signal to the maintenance computer when the maintenance computer is connected to the elevator control device. (Appendix 5) A lower end switch device suspension body having one longitudinal end connected to the lower end switch device; A counterweight for the lower end switch device connected to the other longitudinal end of the lower end switch device suspending body; A lower end switch device suspension wheel around which the longitudinal middle portion of the lower end switch device suspension body is wound; An elevator according to any one of appendices 1 to 4, comprising: [Explanation of symbols]

[0049] 1 Guide rail for car, 2 Cage, 3 Guide rail for lower end switch device, 4 Lower end switch device, 5 Detector for lower end switch device, 6 Hoistway, 7 Fixing device, 8 Suspension body for lower end switch device, 9 Counterweight for lower end switch device, 10 Hanging wheel for lower end switch device, 11 Elevator control device, 12 Maintenance computer (external), 401 Lower end switch, 402 Lower end switch box, 403 Upper guide part, 404 Lower guide part, 701 Fixing bolt.

Claims

1. a guide rail for a lower end switch device provided in the elevator shaft and extending in the height direction; a lower end switch device having a lower end switch, the lower end switch moving along a guide rail for the lower end switch device between a detection position where the lower end switch detects the elevator car and a replacement position below the detection position; Elevator equipped with.

2. 2. The elevator according to claim 1, further comprising a fixing device for fixing the lower end point switch device to the guide rail for the lower end point switch device.

3. a lower end switch device detection device for detecting when the lower end switch device is in the detection position; an elevator control device that outputs a diagnosis-required operation signal to the outside, when the lower terminal switch device detection device detects that the lower terminal switch device is not at the detection position, indicating that a diagnostic operation of the elevator is required; 3. The elevator according to claim 1 or claim 2, comprising:

4. The external device is a maintenance computer carried by a worker during elevator maintenance work, The elevator according to claim 3, wherein the elevator control device outputs the diagnosis-required operation signal to the maintenance computer when the maintenance computer is connected to the elevator control device.

5. A lower end switch device suspension body having one longitudinal end connected to the lower end switch device; A counterweight for the lower end switch device connected to the other longitudinal end of the lower end switch device suspending body; A lower end switch device suspension wheel around which the longitudinal middle portion of the lower end switch device suspension body is wound; 3. The elevator according to claim 1 or claim 2, comprising:

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