Scaffolding device for elevator pit ladders

Abstract

To provide a scaffolding device for an elevator pit ladder, which allows a worker to easily use the elevator pit ladder.SOLUTION: A scaffolding device 4 for an elevator pit ladder comprises a first mounting member 5 attached to an elevator pit ladder 2 fixed to a wall 101 of a hoistway 1, a second mounting member 6 attached to a landing threshold 302 of an elevator landing 3, and a scaffolding member 7 provided across the first mounting member 5 and the second mounting member 6.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a scaffolding system for elevator pit ladders. [Background technology]

[0002] Conventionally, elevator pit ladders fixed to the walls of a hoistway have been known. The elevator pit ladder is arranged so as to extend vertically from the landing on the lowest floor toward the floor of the pit in the hoistway. When a worker performs maintenance and inspection work in the pit, the worker uses the elevator pit ladder to enter the pit from the landing on the lowest floor (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 3-72377 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the configuration of the elevator pit ladder described in Patent Document 1 had the problem that it was difficult for workers to use the elevator pit ladder when the horizontal distance from the lowest floor landing to the elevator pit ladder was large.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a scaffolding device for elevator pit ladders that allows workers to easily use elevator pit ladders. [Means for solving the problem]

[0006] The scaffolding device for an elevator pit ladder according to the present disclosure comprises a first mounting member attached to an elevator pit ladder fixed to a wall of a hoistway, a second mounting member attached to a landing threshold of an elevator landing, and a scaffolding member provided across the first mounting member and the second mounting member. [Effects of the Invention]

[0007] The elevator pit ladder scaffolding device according to the present disclosure allows workers to easily use the elevator pit ladder. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a structural diagram showing the main parts of an elevator in which a scaffolding device for an elevator pit ladder according to a first embodiment is installed. [Figure 2] FIG. 2 is a plan view showing the main parts of the elevator of FIG. 1. [Figure 3] 2 is an enlarged view showing the first mounting member of FIG. 1. FIG. [Figure 4] 4 is a front view showing a state in which the contact plate member of FIG. 3 has moved. [Figure 5] 2 is an enlarged view showing the second mounting member of FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 Fig. 1 is a configuration diagram showing the main parts of an elevator in which a scaffolding device for an elevator pit ladder according to embodiment 1 is installed. Fig. 2 is a plan view showing the main parts of the elevator in Fig. 1. An elevator pit ladder 2 is fixed to a wall 101 of a hoistway 1.

[0010] The pit ladder 2 is arranged so as to extend in the height direction from the floor surface 301 of the lowest landing 3 toward the floor surface 103 of the pit 102 of the elevator shaft 1. In Fig. 1, a configuration is shown in which the lower end of the pit ladder 2 and the floor surface 103 of the pit 102 are separated from each other, but a configuration in which the lower end of the pit ladder 2 and the floor surface 103 of the pit 102 are in contact with each other is also possible.

[0011] The pit ladder 2 has a pair of ladder posts 201 and a plurality of step boards 202. The pair of ladder posts 201 are arranged parallel to each other. Each ladder post 201 extends in the height direction.

[0012] The plurality of step boards 202 are arranged in a line at equal intervals in the height direction. Each step board 202 is arranged along a horizontal plane. Each step board 202 is provided across a pair of ladder posts 201.

[0013] A landing threshold 302 is provided on the floor surface 301 of the landing 3 on the lowest floor. A pair of threshold grooves 303 is formed on the upper surface of the landing threshold 302. A door shoe of a landing door (not shown) is inserted from above into each threshold groove 303. With the door shoe of the landing door inserted into each threshold groove 303, the landing door moves, causing the lower end of the landing door to move along each threshold groove 303.

[0014] The scaffolding device 4 for the elevator pit ladder is provided across the pit ladder 2 and the landing threshold 302 of the landing 3. In Fig. 1, the scaffolding device 4 for the elevator pit ladder is shown provided across the landing threshold 302 and the step 202 which is at the same position in the height direction as the landing threshold 302. Note that the scaffolding device 4 for the elevator pit ladder may also be provided across the landing threshold 302 and the step 202 which is at a position different in the height direction from the position of the landing threshold 302.

[0015] The scaffolding device 4 for elevator pit ladder comprises a first mounting member 5, a second mounting member 6, a scaffolding member 7, a first universal joint 8, and a second universal joint 9.

[0016] Figure 3 is an enlarged view showing the first mounting member 5 of Figure 1. The first mounting member 5 is detachably attached to the step 202 of the pit ladder 2. The first mounting member 5 has a hook member 501, a contact plate member 502, an elastic member 503, a holding member 504, and an operating member 505.

[0017] The hook member 501 is hooked onto the step board 202 from above. The hook member 501 has a flat plate portion 506, a first claw portion 507, and a second claw portion 508. The flat plate portion 506 is placed on the step board 202. The first claw portion 507 is fixed to the flat plate portion 506. The second claw portion 508 is fixed to the flat plate portion 506. The first claw portion 507 and the second claw portion 508 are arranged apart from each other. The first claw portion 507 and the second claw portion 508 are arranged to face each other.

[0018] The flat plate portion 506, the first claw portion 507, and the second claw portion 508 are integrally formed with one another. In other words, the flat plate portion 506, the first claw portion 507, and the second claw portion 508 are made of the same material and are a single, integrally formed member that cannot be disassembled.

[0019] The abutment plate member 502 is provided on a flat plate portion 506 of the hook member 501. The abutment plate member 502 is movable along the flat plate portion 506. As the abutment plate member 502 moves along the flat plate portion 506, the abutment plate member 502 moves closer to or away from the first claw portion 507. As the abutment plate member 502 moves closer to or away from the first claw portion 507, the abutment plate member 502 moves between a contact position and a release position.

[0020] 3 has moved. When the contact plate member 502 is in the contact position, the contact plate member 502 comes into contact with the tread 202. When the contact plate member 502 is in the release position, the contact plate member 502 moves away from the tread 202.

[0021] When the contact plate member 502 comes into contact with the step 202, the step 202 is held by the contact plate member 502 and the first claw portion 507. When the contact plate member 502 and the first claw portion 507 hold the step 202, the first mounting member 5 is fixed to the pit ladder 2.

[0022] When the contact plate member 502 moves away from the step 202, the hold of the step 202 by the contact plate member 502 and the first claw portion 507 is released. When the hold of the step 202 by the contact plate member 502 and the first claw portion 507 is released, the first mounting member 5 becomes removable from the pit ladder 2.

[0023] The elastic member 503 is provided across the contact plate member 502 and the second claw portion 508. The elastic force of the elastic member 503 presses the contact plate member 502 in the direction from the release position toward the contact position. As a result, when the contact plate member 502 is positioned at the contact position, the contact plate member 502 is pressed against the tread 202. Therefore, when the contact plate member 502 is positioned at the contact position, the first mounting member 5 is firmly fixed to the pit ladder 2.

[0024] The retaining member 504 is provided on the second claw portion 508. When the contact plate member 502 is in the release position, the retaining member 504 is able to hold the contact plate member 502. By the retaining member 504 holding the contact plate member 502, the position of the contact plate member 502 is maintained in the release position. This allows the first mounting member 5 to be easily attached to and detached from the tread 202 when the contact plate member 502 is in the release position.

[0025] The operating member 505 operates the holding member 504. By operating the operating member 505, the holding of the contact plate member 502 by the holding member 504 is released. The operation of the holding member 504 by the operating member 505 is performed by operating the operating lever 10, which will be described later.

[0026] The first mounting member 5 and the scaffolding member 7 are connected to each other by a first universal joint 8. Because the first mounting member 5 and the scaffolding member 7 are connected to each other by the first universal joint 8, the inclination angle of the scaffolding member 7 with respect to the horizontal plane can be adjusted when the first mounting member 5 is fixed to the pit ladder 2. In addition, because the first mounting member 5 and the scaffolding member 7 are connected to each other by the first universal joint 8, the scaffolding member 7 can be rotated along the horizontal plane around the first universal joint 8.

[0027] Fig. 5 is an enlarged view showing the second mounting member 6 in Fig. 1. The second mounting member 6 is detachably attached to the landing threshold 302 of the landing 3. The second mounting member 6 has a base member 601 and a pair of insertion members 602.

[0028] The base member 601 is placed on the upper surface of the landing threshold 302. Each of the insert members 602 is provided on the base member 601.

[0029] The pair of insertion members 602 are inserted into the pair of threshold grooves 303, one for each. By inserting the pair of insertion members 602 into the pair of threshold grooves 303, the second attachment member 6 is fixed to the landing threshold 302.

[0030] The second mounting member 6 and the scaffolding member 7 are connected to each other by a second universal joint 9. Because the second mounting member 6 and the scaffolding member 7 are connected to each other by the second universal joint 9, the inclination angle of the scaffolding member 7 with respect to the horizontal plane can be adjusted when the second mounting member 6 is fixed to the landing threshold 302. In addition, because the second mounting member 6 and the scaffolding member 7 are connected to each other by the second universal joint 9, the scaffolding member 7 can be rotated along the horizontal plane around the second universal joint 9.

[0031] The scaffolding member 7 is provided across the first mounting member 5 and the second mounting member 6. The first mounting member 5 is attached to the pit ladder 2, and the second mounting member 6 is attached to the landing threshold 302, allowing a worker to stand on the scaffolding member 7.

[0032] The scaffolding member 7 is extendable so that the distance between the first mounting member 5 and the second mounting member 6 can be changed. This allows the length of the scaffolding member 7 to be adjusted in accordance with the distance between the pit ladder 2 and the landing threshold 302 in the horizontal direction.

[0033] An operating lever 10 is provided on the part of the scaffold member 7 on the second mounting member 6 side. The operating lever 10 is arranged closer to the second mounting member 6 than the holding member 504. An operating member 505 is connected to the operating lever 10. When the worker operates the operating lever 10, the operating member 505 operates the holding member 504. This allows the worker to release the holding of the backing plate member 502 by the holding member 504 while moving away from the holding member 504.

[0034] Marks indicating "No entry" are attached to both widthwise ends of the top surface of the scaffolding member 7. This encourages workers to stand on the center part of the top surface of the scaffolding member 7 in the widthwise direction.

[0035] Next, we will explain the procedure by which a worker performs maintenance and inspection work in the pit 102 using the elevator pit ladder scaffolding device 4. First, the worker stands on the floor 301 of the lowest floor landing 3, and while holding the scaffolding member 7, hooks the hook member 501 of the first mounting member 5 onto the tread 202 of the pit ladder 2.

[0036] Thereafter, the worker operates the operating lever 10, which causes the operating member 505 to operate the holding member 504. This releases the holding of the contact plate member 502 by the holding member 504, and the contact plate member 502 moves from the release position to the contact position due to the elastic force of the elastic member 503. When the contact plate member 502 is positioned at the contact position, the first mounting member 5 is fixed to the pit ladder 2.

[0037] The worker then adjusts the length of the scaffolding member 7 so that it corresponds to the horizontal distance between the pit ladder 2 and the landing threshold 302. The worker then inserts the pair of insertion members 602 of the second mounting member 6 into the pair of threshold grooves 303 one by one. This fixes the second mounting member 6 to the landing threshold 302.

[0038] Thereafter, the worker moves from the floor 301 of the landing 3 through the scaffolding member 7 to the pit ladder 2, and enters the pit 102 from the pit ladder 2. Once inside the pit 102, the worker performs maintenance and inspection work on the elevator.

[0039] After the maintenance and inspection work on the elevator in the pit 102 is completed, the worker moves from the pit 102 to the floor 301 of the landing 3 via the pit ladder 2 and the scaffolding member 7.

[0040] The worker then removes the first mounting member 5 from the tread 202 and the second mounting member 6 from the landing threshold 302. This completes the maintenance and inspection work that the worker performs in the pit 102 using the elevator pit ladder scaffolding device 4.

[0041] As described above, the elevator pit ladder scaffolding device 4 according to the first embodiment includes the first mounting member 5, the second mounting member 6, and the scaffolding member 7. The first mounting member 5 is attached to the elevator pit ladder 2, which is fixed to the wall 101 of the elevator shaft 1. The second mounting member 6 is attached to the landing threshold 302 of the elevator hall 3. The scaffolding member 7 is provided across the first mounting member 5 and the second mounting member 6. With this configuration, even if the horizontal distance from the landing 3 on the lowest floor to the elevator pit ladder 2 is large, the worker can move from the landing 3 to the pit ladder 2 via the scaffolding member 7. This allows the worker to easily use the elevator pit ladder 2.

[0042] Furthermore, in the elevator pit ladder scaffolding device 4 according to the first embodiment, the first mounting member 5 includes a hook member 501, a contact plate member 502, and an elastic member 503. The hook member 501 is hooked onto the step 202 of the pit ladder 2. The contact plate member 502 is sandwiched between the hook member 501 and the hook member 501 when the hook member 501 is hooked onto the step 202. The elastic member 503 is provided across the hook member 501 and the contact plate member 502. The contact plate member 502 is movable between a contact position where it contacts the step 202 and a release position where it is separated from the step 202. The elastic force of the elastic member 503 pushes the contact plate member 502 in a direction from the release position toward the contact position. With this configuration, the elastic force of the elastic member 503 allows the first mounting member 5 to be firmly fixed to the pit ladder 2.

[0043] Furthermore, in the elevator pit ladder scaffolding device 4 according to the first embodiment, the first mounting member 5 has a holding member 504 that holds the contact plate member 502 in the release position, and an operating member 505 that operates the holding member 504. By operating the operating member 505, the holding of the contact plate member 502 by the holding member 504 is released. With this configuration, the worker can release the holding of the contact plate member 502 by the holding member 504 when he or she is away from the holding member 504. This makes it easy to fix the first mounting member 5 to the pit ladder 2.

[0044] Moreover, in the elevator pit ladder scaffolding device 4 according to the first embodiment, the second mounting member 6 has a base member 601 that is placed on the upper surface of the landing threshold 302, and an insertion member 602 that is provided on the base member 601 and inserted into the threshold groove 303 of the landing threshold 302. According to this configuration, the second mounting member 6 can be fixed to the landing threshold 302 by inserting the insertion member 602 into the threshold groove 303.

[0045] Furthermore, in the scaffolding device 4 for an elevator pit ladder according to the first embodiment, the scaffolding member 7 is extendable and retractable in accordance with the distance between the pit ladder 2 and the landing threshold 302. With this configuration, the scaffolding device 4 for an elevator pit ladder can be installed for a plurality of elevators that have different distances between the pit ladder 2 and the landing threshold 302.

[0046] In the scaffolding device for elevator pit ladders according to embodiment 1, the first mounting member 5 has been described as having a hook member 501, a contact plate member 502, an elastic member 503, a holding member 504, and an operating member 505. However, the configuration of the first mounting member 5 is not limited to this. The first mounting member 5 may be configured in any way as long as it can be attached to the pit ladder 2.

[0047] The above has described the scaffolding device for an elevator pit ladder according to the preferred embodiment 1, but it is not limited to the scaffolding device for an elevator pit ladder according to the above-mentioned embodiment 1. Various modifications and conversions can be made to the scaffolding device for an elevator pit ladder according to the above-mentioned embodiment 1 without departing from the scope of the claims.

[0048] (Appendix 1) a first mounting member attached to an elevator pit ladder secured to a wall of the hoistway; a second mounting member attached to a landing threshold of the elevator landing; a scaffolding member provided across the first mounting member and the second mounting member; Scaffolding equipment for elevator pit ladders. (Appendix 2) The first mounting member has a hook member that is hung on a step of the pit ladder, a backing plate member that sandwiches the hook member together with the hook member when the hook member is hung on the step, and an elastic member that is provided across the hook member and the backing plate member, The contact plate member is movable between a contact position where it contacts the tread and a release position where it is separated from the tread, 2. A scaffolding device for an elevator pit ladder as described in Appendix 1, wherein the elastic force of the elastic member pushes the contact plate member in a direction from the release position toward the contact position. (Appendix 3) the first mounting member has a holding member that holds the contact plate member in the release position and an operating member that operates the holding member, A scaffolding device for elevator pit ladders as described in Appendix 2, in which the holding of the contact plate member by the holding member is released by operating the operating member. (Appendix 4) The scaffolding device for an elevator pit ladder according to any one of appendices 1 to 3, wherein the second mounting member has a base member that is placed on the upper surface of the landing threshold, and an insertion member that is provided on the base member and inserted into a threshold groove of the landing threshold. (Appendix 5) A scaffolding device for an elevator pit ladder described in any one of appendix 1 to appendix 4, wherein the scaffolding member is extendable and retractable in accordance with the distance between the pit ladder and the landing threshold. [Explanation of symbols]

[0049] 1 elevator shaft, 2 pit ladder, 3 landing, 4 scaffolding device for elevator pit ladder, 5 first mounting member, 6 second mounting member, 7 scaffolding member, 8 first universal joint, 9 second universal joint, 10 operating lever, 101 wall, 102 pit, 103 floor surface, 201 ladder post, 202 step, 301 floor surface, 302 landing threshold, 303 threshold groove, 501 hook member, 502 contact plate member, 503 elastic member, 504 retaining member, 505 operating member, 506 flat plate portion, 507 first claw portion, 508 second claw portion, 601 base member, 602 insertion member.

Claims

1. a first mounting member attached to an elevator pit ladder secured to a hoistway wall; a second mounting member attached to a landing threshold of the elevator landing; a scaffolding member provided across the first mounting member and the second mounting member; Scaffolding equipment for elevator pit ladders.

2. The first mounting member has a hook member that is hung on a step of the pit ladder, a backing plate member that sandwiches the hook member together with the hook member when the hook member is hung on the step, and an elastic member that is provided across the hook member and the backing plate member, The contact plate member is movable between a contact position where it contacts the tread and a release position where it is separated from the tread, 2. The scaffolding device for an elevator pit ladder according to claim 1, wherein the elastic force of the elastic member pushes the contact plate member in a direction from the release position toward the contact position.

3. the first mounting member has a holding member that holds the contact plate member in the release position and an operating member that operates the holding member, 3. The scaffolding device for an elevator pit ladder according to claim 2, wherein the holding of the support plate member by the holding member is released by operating the operating member.

4. 4. The scaffolding device for an elevator pit ladder according to claim 1, wherein the second mounting member comprises a base member that is placed on the upper surface of the landing threshold, and an insertion member that is provided on the base member and inserted into a threshold groove of the landing threshold.

5. 4. A scaffolding device for an elevator pit ladder according to claim 1, wherein the scaffolding member is extendable and retractable in accordance with the distance between the pit ladder and the landing threshold.

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