Dual-purpose upper mechanical stop device

Abstract

This invention proposes a dual-purpose upper mechanical blocking device, comprising a locking plate assembly and a mechanical locking pin assembly. The locking plate assembly is fixed to the elevator guide rail, and the mechanical locking pin assembly is fixed to the upper beam of the elevator car frame. The locking plate assembly and the mechanical locking pin assembly are arranged adjacent to each other, with the mechanical locking pin assembly confined within the locking plate assembly. The locking plate assembly has a locking state switching device and includes at least two locking states: a unidirectional operation and maintenance state that restricts the upward movement of the mechanical locking pin assembly, and a bidirectional main unit maintenance state that restricts the vertical movement of the mechanical locking pin assembly. When the mechanical locking pin assembly is confined within the locking plate assembly, the locking state switch is triggered. The locking plate assembly has two blocking states, allowing for testing of the elevator car's vertical movement and detection of the main unit's operating status, ensuring safety during elevator maintenance.

Description

Technical Field

[0001] This utility model relates to an improvement of an elevator safety device, specifically a dual-purpose upper mechanical stop device. Background Technology

[0002] The upper mechanical stop device of an elevator is a rigid structure installed in the space above the elevator car. It is used to create a supported space above the elevator car, providing a safe height and a safe upper distance for maintenance and other work. The upper mechanical stop device is usually a rigid support rod structure installed on the top of the elevator car. When work is required, the support rod is erected to provide spatial support. However, this structure requires a large amount of structural space and is prone to interference with other structures. Moreover, the installation is relatively complicated and not conducive to installation and maintenance. Therefore, a reliable and fully functional upper mechanical stop device is needed. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned deficiencies in the prior art and to provide a dual-purpose upper mechanical stopping device.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: the upper mechanical blocking device includes a locking plate assembly and a mechanical locking pin assembly. The locking plate assembly is fixed on the elevator guide rail, and the mechanical locking pin assembly is fixed on the upper beam of the elevator car frame. The locking plate assembly and the mechanical locking pin assembly are arranged adjacent to each other. The mechanical locking pin assembly is restricted within the locking plate assembly. The locking plate assembly has a locking state switching device and includes at least two locking states. Locking state one is a one-way operation and maintenance state that restricts the upward movement of the mechanical locking pin assembly, and locking state two is a two-way host maintenance state that restricts the up and down movement of the mechanical pin assembly. The mechanical locking pin assembly has a locking state switch. When the mechanical locking pin assembly is restricted within the locking plate assembly, the locking state switch is triggered. The mechanical locking device in this design is mainly divided into two parts, which are fixed to the movable car and the fixed guide rail, respectively. In normal operation, the mechanical locking pin assembly is in the retracted state, the locking switch is not triggered, and the movement of the elevator car is not restricted. When maintenance is required, the mechanical locking pin assembly extends and interlocks with the locking plate assembly. The locking plate assembly has two blocking states: one is that it can restrict upward movement but not downward movement, in which case the elevator car's up and down operation can be tested, but it cannot rise to the over-limit position; the other is that both up and down movement are restricted, in which case the elevator car cannot move up and down, and the working status of the main unit can be tested separately, ensuring the safety of the elevator maintenance process. The overall structure does not take up space and is easy to install.

[0005] Furthermore, the mechanical locking pin assembly includes a locking pin body, a locking pin seat, and a toggle lever. The locking pin seat is fixed to the end edge of the upper beam and has a pin hole. The locking pin body is laterally movably inserted into the pin hole. A toggle lever is provided on the locking pin body, extending upwards through the upper structure of the upper beam and connecting to a locking nut. The locking nut is screwed and pressed against the upper surface of the upper beam. A locking state switch is provided at the rear of the locking pin body. The locking pin body and locking pin seat form a mechanically rigid blocking structure. When a blocking function is required, it mechanically blocks the operation of the locking plate assembly. The toggle lever is a mechanical component for function switching, used to controllably and directly switch the working state, and also has a mechanical locking function.

[0006] Furthermore, the locking state switch has two trigger ends arranged in opposite directions. One trigger end is in the locked open state and is positioned corresponding to the rear end of the locking pin. When the locking pin is in the retracted state, it contacts this trigger end. A switch plate is provided on the locking pin, extending towards and contacting the other trigger end. The other trigger end is in the locked closed state. When the locking pin is extended, the switch plate contacts this trigger end. The locking nut secures the relative positions of the two contacting locking pins by tightening them. The locking state switch has two trigger ends, one for maintenance and the other for operation. Different working trigger switches are activated by varying the positions of the locking pins, thus switching the elevator circuit functions.

[0007] Furthermore, the locking plate assembly includes a blocking plate fixed to the rear of the guide rail. The blocking plate has a blocking portion formed on one side of the guide rail, and this blocking portion has a blocking lock groove with a lower opening. A locking state switching device is also provided on the blocking plate. This device closes the lower opening of the blocking lock groove when the main unit is under maintenance. The blocking plate is fixed to the rear of the guide rail, ensuring a reliable fixing base. The blocking lock groove can unidirectionally restrict the upward movement of the elevator car. When used in conjunction with the locking state switching device, it can prevent movement in both the vertical and horizontal directions, thus switching the blocking function.

[0008] Furthermore, the locking state switching device includes a switching plate, a rotating shaft, a fixing pin, and a maintenance trigger switch. The switching plate is rotatably connected to the locking plate around the rotating shaft, forming two lockable states: horizontal and vertical. The switching plate has a insertion hole, and the locking plate has positioning holes corresponding to the two lockable states. The fixing pin passes through the insertion hole and is fixed in the positioning hole. The maintenance trigger switch is located adjacent to the switching plate. When the switching plate is in the horizontal position, it closes the lower opening of the locking groove and simultaneously contacts and triggers the maintenance trigger switch. The switching plate is the main switching structure of the mechanical locking structure. It is fixed in position by the fixing pin and works with the maintenance trigger switch to switch different maintenance modes in the circuit, achieving better safety requirements for maintenance work.

[0009] Furthermore, a limit switch bracket is provided on the upper part of the locking pin seat, and a bistable limit switch is installed on the limit switch bracket. The matching magnetic body is fixed to the blocking plate of the locking plate assembly. The bistable limit switch is a magnetic induction structure used for leveling and positioning of the elevator car. It is usually installed on the side of the elevator car and is combined with the upper mechanical blocking device, saving structural space.

[0010] Compared with the prior art, this utility model has the following advantages and effects: This design is an improvement of the upper mechanical blocking device, which has the effects of small space occupation, complete functions, intuitive and convenient use, can improve the safety of maintenance work, improve work efficiency, and is especially suitable for the narrow foundation environment of elevator shaft, which is conducive to its widespread use. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the operation and maintenance status.

[0012] Figure 2 This is a structural diagram of the main unit under maintenance.

[0013] Figure 3 This is a schematic diagram of the forward structure of the mechanical locking pin assembly.

[0014] Figure 4 This is a structural diagram of the mechanical locking pin assembly on the upper beam.

[0015] Figure 5 This is a structural schematic diagram of the locking plate assembly.

[0016] In the diagram: 1. Locking plate assembly, 2. Mechanical locking pin assembly, 3. Guide rail, 4. Upper beam, 21. Locking pin body, 22. Locking pin seat, 23. Actuating rod, 24. Pin hole, 25. Locking nut, 26. Trigger end, 27. Switch plate, 11. Stopping plate, 12. Stopping lock groove, 13. Switching plate, 14. Rotating shaft, 15. Fixing pin, 16. Inspection trigger switch, 17. Positioning hole, 5. Limit switch bracket, 6. Bistable limit switch. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0018] A dual-purpose upper mechanical blocking device includes a locking plate assembly 1 and a mechanical locking pin assembly 2. The locking plate assembly 1 is fixed on a guide rail 3, and the mechanical locking pin assembly 2 is fixed on the upper beam 4 of the elevator car frame. The locking plate assembly 1 and the mechanical locking pin assembly 2 are arranged adjacent to each other, and the mechanical locking pin assembly 2 is confined within the locking plate assembly 1. The locking plate assembly 1 has a locking state switching device and includes at least two locking states. Locking state one is a one-way operation and maintenance state that restricts the upward movement of the mechanical locking pin assembly 2, and locking state two is a two-way host maintenance state that restricts the up and down movement of the mechanical pin assembly. The mechanical locking pin assembly 2 has a locking state switch, which is triggered when the mechanical locking pin assembly 2 is confined within the locking plate assembly 1.

[0019] The mechanical locking pin assembly 2 includes a locking pin body 21, a locking pin seat 22, and a lever 23. The locking pin seat 22 is fixed to the end edge of the upper beam 4. A pin hole 24 is provided on the locking pin seat 22. The locking pin body 21 is laterally movably inserted into the pin hole 24. A lever 23 is provided on the locking pin body 21. The lever 23 is provided upward, passes through the upper structure of the upper beam 4, and is connected to a locking nut 25. The locking nut 25 is screwed and pressed against the upper surface of the upper beam 4. A locking state switch is provided at the rear of the locking pin body 21.

[0020] The locking state switch has two trigger ends 26 arranged in opposite directions. One trigger end 26 is in the locked open state and is arranged at the rear end of the locking pin 21. When the locking pin 21 is in the retracted state, it is in contact with the trigger end 26. A switch plate 27 is arranged on the locking pin 21. The switch plate 27 extends towards and contacts the other trigger end 26. The other trigger end 26 is in the locked closed state. When the locking pin 21 is in the extended state, the switch plate 27 is in contact with the trigger end 26. The locking nut 25 fixes the relative positions of the two contacting locking pins 21 by tightening.

[0021] The locking plate assembly 1 includes a blocking plate 11, which is fixed to the rear of the guide rail 3. The blocking plate 11 has a blocking part formed on one side of the guide rail 3. The blocking part has a blocking lock groove 12 with a lower opening. A locking state switching device is also provided on the blocking plate 11. The locking state switching device closes the lower opening of the blocking lock groove 12 when the host is under maintenance.

[0022] The locking state switching device includes a switching plate 13, a rotating shaft 14, a fixing pin 15, and a maintenance trigger switch 16. The switching plate 13 is rotatably connected to the locking plate with the rotating shaft 14 as the axis, forming two fixable states: horizontal and vertical. The switching plate 13 has a plug hole, and the blocking plate 11 is provided with positioning holes 17 corresponding to the two fixable states. The fixing pin 15 passes through the plug hole and is fixed in the positioning hole 17. The maintenance trigger switch 16 is located near the switching plate 13. When the switching plate 13 is set horizontally, it closes the lower opening of the blocking lock groove 12 and simultaneously contacts and triggers the maintenance trigger switch 16.

[0023] The upper part of the locking pin seat 22 is provided with a limit switch bracket 5, and a bistable limit switch 6 is provided on the limit switch bracket 5. The matching magnetic body is fixed on the blocking plate 11 of the locking plate assembly 1.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary rather than restrictive in all respects. The scope of this invention is defined by the claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description method is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-purpose upper mechanical stopping device, characterized in that: The upper mechanical stopping device includes a locking plate assembly (1) and a mechanical locking pin assembly (2). The locking plate assembly (1) is fixed on the guide rail (3), and the mechanical locking pin assembly (2) is fixed on the upper beam (4) of the elevator car frame. The locking plate assembly (1) and the mechanical locking pin assembly (2) are arranged close to each other. The mechanical locking pin assembly (2) is restricted within the locking plate assembly (1). The locking plate assembly (1) has a locking state switching device and includes at least two locking states. Locking state one is a one-way operation and maintenance state that restricts the mechanical locking pin assembly (2) from moving upward, and locking state two is a two-way host maintenance state that restricts the mechanical pin assembly from moving up and down. The mechanical locking pin assembly (2) has a locking state switch. When the mechanical locking pin assembly (2) is restricted within the locking plate assembly (1), the locking state switch is triggered.

2. The dual-purpose upper mechanical stopping device according to claim 1, characterized in that: The mechanical locking pin assembly (2) includes a locking pin body (21), a locking pin seat (22), and a lever (23). The locking pin seat (22) is fixed to the end edge of the upper beam (4). A pin hole (24) is provided on the locking pin seat (22). The locking pin body (21) is laterally movably inserted into the pin hole (24). A lever (23) is provided on the locking pin body (21). The lever (23) is set upward, passes through the upper structure of the upper beam (4), and is connected to a locking nut (25). The locking nut (25) is screwed and pressed against the upper surface of the upper beam (4). A locking state switch is provided at the rear of the locking pin body (21).

3. The dual-purpose upper mechanical stopping device according to claim 2, characterized in that: The locking state switch has two trigger ends (26) arranged in opposite directions. One trigger end (26) is in the locked open state and is arranged at the rear end of the locking pin (21). When the locking pin (21) is in the retracted state, it is in contact with the trigger end (26). A switch plate (27) is arranged on the locking pin (21). The switch plate (27) extends to and contacts the other trigger end (26). The other trigger end (26) is in the locked closed state. When the locking pin (21) is in the extended state, the switch plate (27) is in contact with the trigger end (26). The locking nut (25) fixes the relative positions of the two contacting locking pins (21) by tightening.

4. The dual-purpose upper mechanical stopping device according to claim 1, characterized in that: The locking plate assembly (1) includes a blocking plate (11), which is fixed to the rear of the guide rail (3). The blocking plate (11) has a blocking part formed on one side of the guide rail (3). The blocking part has a blocking lock groove (12) with a lower opening. A locking state switching device is also provided on the blocking plate (11). The locking state switching device closes the lower opening of the blocking lock groove (12) when the host is under maintenance.

5. The dual-purpose upper mechanical stopping device according to claim 4, characterized in that: The locking state switching device includes a switching plate (13), a rotating shaft (14), a fixing pin (15), and a maintenance trigger switch (16). The switching plate (13) is rotatably connected to the locking plate with the rotating shaft (14) as the axis and forms two fixable states in the horizontal and vertical directions. The switching plate (13) has a plug hole. The blocking plate (11) is provided with positioning holes (17) corresponding to the two fixable states. The fixing pin (15) passes through the plug hole and is fixed in the positioning hole (17). The maintenance trigger switch (16) is set near the switching plate (13). When the switching plate (13) is set in the horizontal direction, it closes the lower opening of the blocking lock groove (12) and simultaneously contacts and triggers the maintenance trigger switch (16).

6. The dual-purpose upper mechanical stopping device according to claim 2, characterized in that: The upper part of the locking pin seat (22) is provided with a limit switch bracket (5), and a bistable limit switch (6) is provided on the limit switch bracket (5). The matching magnetic body is fixed on the blocking plate (11) of the locking plate assembly (1).

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