Locking device for overhauling and limiting elevator without machine room

Abstract

The utility model discloses a locking device for overhauling and limiting an elevator without a machine room. The locking device comprises an upper stopping and limiting collision bow (1), an overhauling hanging plate (2) and a support (3) which is U-shaped when overlooked, the upper stopping and limiting collision bow (1) and the overhauling hanging plate (2) are both connected with a guide rail (4) of an elevator, the upper stopping and limiting collision bow (1) is located above the overhauling hanging plate (2), and a hanging hole (5) is formed in the overhauling hanging plate (2). The support (3) is connected with a lift car of an elevator, a horizontal long hole (6) is formed in a bottom plate of the support (3), a plug pin (7) is arranged on the support (3), the plug pin (7) penetrates through two side plates of the support (3), a bolt (8) vertically penetrating through the long hole (6) is arranged on the plug pin (7), and an upper stop limit switch (9) capable of horizontally sliding is arranged on the front side of the support (3). The utility model has the advantage that the cost of the elevator can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of machine room-less elevator accessories, and in particular relates to a locking device for maintenance and limiting of machine room-less elevators. Background Art

[0002] The machine room-less elevator is equipped with an upper mechanical blocking device and an inspection latch device. The upper mechanical blocking device is used to automatically block the elevator when there is insufficient space on the car roof, thereby avoiding safety accidents caused by insufficient space. The structure of the existing upper mechanical blocking device is as follows: Figure 4 As shown, the upper mechanical blocking device is connected to the guide rail of the elevator through a fastener 15. When the elevator needs to be repaired, the worker opens the hall door and the car door according to regulations, and moves the striker 16 on the upper mechanical blocking device to make it touch the upper limit switch on the top of the car, so that the elevator starts the deceleration function, and then starts the car to reach the required height. Then, the pin rod 17 is moved, and the pin rod 17 drives the top rod 18 to extend and cooperate with the limit plate on the side wall of the car to prevent the car from continuing to rise.

[0003] The structure of the existing inspection latch device includes an inspection latch assembly and a stop plate assembly. The inspection latch assembly is fixed to the upper beam of the car, and the stop plate assembly is fixed to the guide rail of the elevator. Figure 5 As shown, the pin on the maintenance pin assembly is axially moved so that it is inserted into the hole of the stop plate assembly.

[0004] The existing upper mechanical blocking device and maintenance latch device have a relatively complex structure and a large number of parts, which will increase the cost of the elevator. If the upper mechanical blocking device and the maintenance latch device can be combined into one and the structure is simplified, the cost of the elevator should be reduced. Utility Model Content

[0005] The purpose of the utility model is to provide a locking device for maintenance and position limiting of a machine room-less elevator. The utility model has the advantage of reducing the cost of the elevator.

[0006] The technical solution of the utility model is: a locking device for maintenance and limiting of a machine room-less elevator, comprising an upper blocking and limiting collision bow, an inspection hanging plate and a U-shaped bracket when viewed from above;

[0007] The upper stop limit striker and the inspection hanging plate are both connected to the guide rail of the elevator. The upper stop limit striker is located above the inspection hanging plate, and the inspection hanging plate is provided with a hanging hole;

[0008] The bracket is connected to the elevator car. A horizontal long hole is provided on the bottom plate of the bracket. A pin is provided on the bracket. The pin passes through the two side plates of the bracket. A bolt is provided on the pin and passes vertically through the long hole. An upper stop limit switch that can slide horizontally is provided on the front side of the bracket.

[0009] In the aforementioned locking device for maintenance and limiting of a machine room-less elevator, circular limiting holes are provided at both ends and the middle of the long hole, and a limiting sleeve is provided on the bolt to cooperate with the limiting hole, and the limiting sleeve can move axially.

[0010] In the aforementioned locking device for maintenance and position limiting of a machine room-less elevator, the material of the position limiting sleeve is rubber. In the aforementioned locking device for maintenance and position limiting of a machine room-less elevator,.

[0011] In the aforementioned locking device for maintenance and limiting of a machine room-less elevator, the upper blocking limit switch is a travel switch.

[0012] In the aforementioned locking device for maintenance and limiting of a machine room-less elevator, the upper stop limit switch is connected to the bracket via a slide, the slide is fixed to the bracket, and the upper stop limit switch is slidably connected to the slide.

[0013] Compared to the prior art, the present invention combines an upper mechanical stop with a maintenance latch through structural improvements. This combines the functions of the conventional upper mechanical stop, limiting the maximum lift height of the car and ensuring sufficient space above the car to prevent accidents, while also providing the functions of a maintenance latch, which can fix the car height and prevent the car from being raised or lowered during maintenance, ensuring worker safety. The combination of the upper mechanical stop and the maintenance latch simplifies the structure, reduces the number of parts, and consequently reduces manufacturing costs, thereby lowering elevator costs. Therefore, the present invention offers the advantage of reducing elevator costs.

[0014] In addition, the installation of the utility model on the elevator is also relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the bracket on the car.

[0016] Figure 2 It is a top view schematic diagram of the bracket on the car.

[0017] Figure 3 This is a schematic diagram of the upper stop limit striker, maintenance hanging plate and stop plate assembly on the guide rail.

[0018] Figure 4 It is a partial structural diagram of an existing upper mechanical blocking device.

[0019] Figure 5 The utility model is a structural diagram of an inspection latch assembly in an existing inspection latch device.

[0020] The marks in the accompanying drawings are: 1-upper blocking limit collision bow, 2-inspection hanging plate, 3-bracket, 4-guide rail, 5-hanging hole, 6-long hole, 7-latch, 8-bolt, 9-upper blocking limit switch, 10-limit hole, 11-limit sleeve, 12-slide plate, 13-upper beam assembly, 14-stop plate assembly, 15-fastener, 16-collision plate, 17-pin rod, 18-top rod, 19-, 20-, 21-, 22-, 23-. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment. A locking device for maintenance and limiting of a machine room-less elevator, such as Figures 1 to 3 As shown, it includes an upper blocking limit striker 1, an inspection hanging plate 2, a stop plate assembly 14 and a U-shaped bracket 3 when viewed from above.

[0023] The upper stop limit striker 1 and the inspection hanging plate 2 are both connected to the guide rail 4 of the elevator. The upper stop limit striker 1 is located above the inspection hanging plate 2. The stop plate assembly 14 is located above the upper stop limit striker 1. The inspection hanging plate 2 is provided with a hanging hole 5.

[0024] The bracket 3 is connected to the elevator car, and the connection point is located on the upper beam assembly 13 of the car. A horizontal long hole 6 is provided on the bottom plate of the bracket 3, and a pin 7 is provided on the bracket 3. The pin 7 passes through the two side plates of the bracket 3, and the pin 7 is provided with a bolt 8 that passes vertically through the long hole 6. The front side of the bracket 3 is provided with an upper blocking limit switch 9. The upper blocking limit switch 9 is a travel switch. The contact of the travel switch is a roller, and the roller is connected to the body of the travel switch through a swing arm, which is an existing accessory. The upper blocking limit switch 9 is connected to the bracket 3 through a slide 12. The slide 12 is fixed to the bracket 3, and the upper blocking limit switch 9 is slidably connected to the slide 12. The upper blocking limit switch 9 is set in the slide groove of the slide 12.

[0025] Circular limiting holes 10 are provided at both ends and the middle of the long hole 6. A limiting sleeve 11 is provided on the bolt 8 to cooperate with the limiting hole 10. The limiting sleeve 11 is made of rubber and can move axially. After the limiting sleeve 11 is inserted into the limiting hole 10, it can limit the axial movement of the pin 7 to ensure safety in use.

[0026] Working principle: Figure 1 As shown, when the elevator is in normal working condition, the bolt 8 stays in the limit hole 10 on the right, and the pin 7 is in the right position. At this time, the contacts of the car rising pin 7 and the upper blocking limit switch 9 will not touch the inspection hanging plate 2, the upper blocking limit collision bow 1 and the stop plate assembly 14.

[0027] The worker pulls the limit sleeve 11 axially outward from the right limit hole 10, moves the bolt 8 to the middle limit hole 10, and inserts the limit sleeve 11 into the middle limit hole 10. The bolt 8 drives the latch 7 to move outward for a distance. After the car continues to rise, the latch 7 will touch the stop plate assembly 14. The worker slides the upper stop limit switch 9 outward for a distance so that the contact of the upper stop limit switch 9 is located on the lower side of the upper stop limit striker 1. After the car rises, the contact of the upper stop limit switch 9 can touch the upper stop limit striker 1. At this time, the locking device plays the role of the upper mechanical stop device. When the car rises, the contact of the upper stop limit switch 9 touches the upper stop limit striker 1, and the elevator starts the deceleration function until the speed is zero. Under ideal conditions, the latch 7 does not touch the stop plate assembly 14. The stop plate assembly 14 acts as a safety to limit the maximum rising height of the car.

[0028] Return the locking device to Figure 1 In this state, the worker starts the car to the required height, pulls the limit sleeve 11 axially outward from the right limit hole 10, moves the bolt 8 to the left limit hole 10, and inserts the limit sleeve 11 into the middle limit hole 10. The bolt 8 drives the pin 7 to move outward and inserts it into the hanging hole 5 of the maintenance hanging plate 2. The car height is fixed, and the locking device serves as a maintenance pin device. At this time, the worker can carry out maintenance work.

[0029] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A locking device for maintenance and limiting of a machine room-less elevator, characterized by: It includes an upper stop-limit collision bow (1), an inspection hanging plate (2), and a U-shaped bracket (3) when viewed from above; The upper stop limit collision bow (1) and the inspection hanging plate (2) are both connected to the guide rail (4) of the elevator. The upper stop limit collision bow (1) is located above the inspection hanging plate (2). The inspection hanging plate (2) is provided with a hanging hole (5). The bracket (3) is connected to the elevator car. A horizontal long hole (6) is provided on the bottom plate of the bracket (3). A latch (7) is provided on the bracket (3). The latch (7) passes through two side plates of the bracket (3). A bolt (8) is provided on the latch (7) and passes vertically through the long hole (6). The front side of the bracket (3) is provided with an upper stop limit switch (9) that can slide horizontally.

2. The locking device for maintenance and position limiting of a machine room-less elevator according to claim 1, characterized in that: Circular limiting holes (10) are provided at both ends and the middle of the long hole (6), and a limiting sleeve (11) matching with the limiting hole (10) is provided on the bolt (8), and the limiting sleeve (11) can move axially.

3. The locking device for maintenance and position limiting of a machine room-less elevator according to claim 2, characterized in that: The material of the limiting sleeve (11) is rubber.

4. The locking device for maintenance and position limiting of a machine room-less elevator according to claim 1, characterized in that: The upper blocking limit switch (9) is a travel switch.

5. The locking device for maintenance and limiting of a machine room-less elevator according to claim 1, characterized in that: The upper stop limit switch (9) is connected to the bracket (3) via a slide plate (12), the slide plate (12) is fixed to the bracket (3), and the upper stop limit switch (9) is slidably connected to the slide plate (12).

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