Anti-falling device

Abstract

The utility model discloses an anti-falling device which comprises a mounting seat, a connecting piece and a movable arm, the mounting seat is connected with a lift car, the connecting piece is arranged on a derrick, the movable arm is connected with the mounting seat and can swing up and down, a limiting part is arranged on the movable arm, a first plane is arranged on the limiting part, and a second plane is horizontally arranged on the connecting piece. The movable arm can swing upwards towards the direction of the connecting piece to a first position, so that the limiting part extends to the position above the connecting piece, the first plane is in a horizontal state and is opposite to the second plane, and when the lift car descends, the first plane can abut against the second plane. According to the anti-falling device, the falling lift car is limited through cooperation of the limiting part and the connecting piece, the lift car is prevented from continuously falling, the use safety is improved, the lift car can be prevented from rolling to cause secondary safety accidents through cooperation of the first plane and the second plane, and the anti-falling device is simple and stable in overall structure, beneficial to production and high in practicability. Disassembly, maintenance and replacement are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, and in particular relates to a fall prevention device. Background Technology

[0002] Lifting equipment is widely used in the lifting and handling of goods. Existing lifting equipment mainly consists of a vertically installed derrick and a car that moves up and down on the derrick. The lifting of the car is mainly achieved through a traction mechanism, such as the cooperation of chains and hydraulic cylinders. In order to prevent accidents caused by the car falling due to the failure of the traction mechanism, anti-fall devices are installed on the lifting equipment to ensure the safety of the car. Although the existing anti-fall devices can limit the falling car and stop it from falling, the car is prone to tilting after it stops falling, which can cause secondary safety accidents. Utility Model Content

[0003] The purpose of this invention is to provide a fall protection device that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides a fall protection device, comprising:

[0005] Mounting base, which is connected to the car;

[0006] The connector and the movable arm are provided. The connector is mounted on the derrick. The movable arm is connected to the mounting base and can swing up and down. The movable arm is provided with a limiting part and a first plane is provided on the limiting part. The connector is provided with a second plane horizontally.

[0007] The movable arm can swing upward to a first position in the direction of the connector, so that the limiting part extends above the connector, so that the first plane is in a horizontal state and opposite to the second plane, so that when the car descends, the first plane can abut against the second plane.

[0008] Optionally, it also includes a drive device, which is disposed on the mounting base and is capable of driving the movable arm to swing up and down.

[0009] Optionally, the driving device is an electric telescopic pole.

[0010] Optionally, the mounting base has a cavity, the movable arm is disposed in the cavity, the mounting base is vertically provided with a limiting hole corresponding to the movable arm, the limiting part is provided with a third plane disposed opposite to the first plane, when the movable arm swings to the first position, the limiting part extends out from the limiting hole, and the third plane abuts against the upper inner wall of the limiting hole.

[0011] Optionally, it also includes a connecting shaft, which is laterally disposed within the cavity, and the end of the movable arm away from the limiting part rotates with the connecting shaft.

[0012] Optionally, the connecting shaft is provided with two positioning sleeves spaced apart along its axial direction, and the end of the movable arm away from the limiting part is limited between the two positioning sleeves.

[0013] Optionally, it also includes a connecting plate and a support base, the mounting base being connected to the connecting plate, the connecting plate being connected to the car, a gap being formed between the mounting base and the car, and the support base being disposed in the gap and connected to the car and the mounting base.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by cooperating with the limiting part set on the movable arm and the connecting part on the derrick, the falling car is limited to prevent the car from falling further, which can effectively improve the safety of use; and the cooperation between the first plane set on the limiting part and the second plane on the connecting part can prevent the car from tilting and causing secondary safety accidents. The overall structure of this anti-fall device is simple and stable, which is conducive to production and easy to disassemble, repair and replace. Attached Figure Description

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model installed on the car.

[0017] Figure 2 For example Figure 1 A magnified view of a portion of region A shown in the diagram.

[0018] Figure 3 This is a top view of the present invention.

[0019] Figure 4 For the Figure 3 Sectional view along line AA in the middle.

[0020] In the picture:

[0021] 100. Mounting base; 110. Cavity; 120. Limiting hole;

[0022] 200. Connector; 210. Second plane;

[0023] 300. Movable arm; 310. Limiting part; 311. First plane; 312. Third plane;

[0024] 400. Drive unit;

[0025] 500. Connecting shaft; 510. Positioning sleeve;

[0026] 600. Connecting plate;

[0027] 700. Support base;

[0028] 800, the car;

[0029] 900, Derrick. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of this utility model, it should be understood that if the embodiments of this utility model involve directional indications, such as up, down, left, right, front, back, inside, outside, etc., the orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can be mechanical or electrical connections. They can be direct connections or indirect connections through an intermediate medium, and can represent the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0034] like Figures 1 to 4 As shown, this utility model embodiment provides a fall protection device. At least two fall protection devices are provided, and they are arranged opposite each other or diagonally on both sides of the car 800. The fall protection device includes a mounting base 100, a connector 200, a movable arm 300, a connecting shaft 500, a connecting plate 600, and a support base 700.

[0035] The mounting base 100 is connected to the car 800, and the connecting piece 200 is set on the hoist 900. Multiple connecting pieces 200 can be set at intervals along the vertical direction according to actual needs, and the multiple connecting pieces 200 can be set in different shapes, such as plate-shaped, rod-shaped, etc.

[0036] Furthermore, the movable arm 300 is connected to the mounting base 100 and can swing up and down. Furthermore, the movable arm 300 is provided with a limiting part 310, and the limiting part 310 is provided with a first plane 311. The connecting member 200 is provided with a second plane 210 horizontally. Specifically, the first plane 311 is set as the lower end surface of the limiting part 310, and the second plane 210 is set as the upper end surface of the connecting member 200. Furthermore, the movable arm 300 can swing upward to a first position in the direction of the connecting member 200, so that the limiting part 310 extends above the connecting member 200, so that the first plane 311 is in a horizontal state and opposite to the second plane 210, so that when the car 800 descends, the first plane 311 can abut against the second plane 210.

[0037] When the car 800 falls, the extended limiting part 310 limits the car 800 to prevent it from falling further. The connection between the first plane 311 and the second plane 210 in the horizontal state can prevent the car 800 from tilting and causing a secondary safety accident. The overall structure of the anti-fall device is simple and stable, which is conducive to production and easy to disassemble, repair and replace.

[0038] In one embodiment, in order for the movable arm 300 to swing upward when the car 800 falls, the present invention also provides a drive device 400, wherein the drive device 400 is mounted on the mounting base 100 and can drive the movable arm 300 to swing up and down. Specifically, the drive device 400 is preferably an electric telescopic rod, the output end of the electric telescopic rod is rotatably connected to the movable arm 300, and the bottom end of the electric telescopic rod is rotatably connected to the mounting base 100.

[0039] In one embodiment, the mounting base 100 has a cavity 110, and the movable arm 300 is disposed in the cavity 110. The mounting base 100 is vertically provided with a limiting hole 120 corresponding to the movable arm 300. Specifically, the limiting hole 120 is rectangular. The limiting part 310 is provided with a third plane 312 disposed opposite to the first plane 311. Specifically, the third plane 312 is the upper end face of the limiting part 310. When the movable arm 300 swings to the first position, the limiting part 310 extends out from the limiting hole 120, and the third plane 312 abuts against the upper inner wall of the limiting hole 120. That is, the limiting part 310 is limited by the cooperation of the third plane 312 and the upper inner wall of the limiting hole 120 to ensure the stability of the limiting part 310. Moreover, the cooperation of the third plane 312 and the upper inner wall of the limiting hole 120 can ensure that the first plane 311 can be in a horizontal state when the movable arm 300 swings to the first position.

[0040] In one embodiment, in order to enable the movable arm 300 to swing up and down, the present invention also provides a connecting shaft 500, wherein the connecting shaft 500 is arranged laterally in the cavity 110, and the end of the movable arm 300 away from the limiting part 310 rotates with the connecting shaft 500.

[0041] In one embodiment, the connecting shaft 500 is provided with two positioning sleeves 510 spaced apart along its axial direction. The end of the movable arm 300 away from the limiting part 310 is limited between the two positioning sleeves 510. That is, the two positioning sleeves 510 prevent the movable arm 300 from shifting, thus ensuring the accuracy and stability of the movable arm 300.

[0042] In one embodiment, the mounting base 100 is connected to the connecting plate 600, the connecting plate 600 is connected to the car 800, a gap is formed between the mounting base 100 and the car 800, and the support base 700 is disposed in the gap and connected to the car 800 and the mounting base 100 to ensure the stability of the mounting base 100.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fall arrestor, characterized in that, include: Mounting base, which is connected to the car; The connector and the movable arm are provided. The connector is mounted on the derrick. The movable arm is connected to the mounting base and can swing up and down. The movable arm is provided with a limiting part and a first plane is provided on the limiting part. The connector is provided with a second plane horizontally. The movable arm can swing upward to a first position in the direction of the connector, so that the limiting part extends above the connector, so that the first plane is in a horizontal state and opposite to the second plane, so that when the car descends, the first plane can abut against the second plane.

2. The fall arrestor according to claim 1, characterized in that, Also includes: A drive device is mounted on the mounting base and is capable of driving the movable arm to swing up and down.

3. A fall arrestor according to claim 2, characterized in that, The driving device is an electric telescopic pole.

4. A fall arrestor according to claim 1, characterized in that, The mounting base has a cavity, the movable arm is disposed in the cavity, the mounting base has a vertically arranged limiting hole corresponding to the movable arm, the limiting part has a third plane disposed opposite to the first plane, when the movable arm swings to the first position, the limiting part extends out from the limiting hole, and the third plane abuts against the upper inner wall of the limiting hole.

5. A fall arrestor according to claim 4, characterized in that, Also includes: A connecting shaft is arranged laterally within the cavity, and the end of the movable arm away from the limiting part rotates with the connecting shaft.

6. A fall arrestor according to claim 5, characterized in that, The connecting shaft is provided with two positioning sleeves spaced apart along its axial direction, and the end of the movable arm away from the limiting part is limited between the two positioning sleeves.

7. A fall arrestor according to claim 1, characterized in that, Also includes: The assembly includes a connecting plate and a support base. The mounting base is connected to the connecting plate, and the connecting plate is connected to the car. A gap is formed between the mounting base and the car. The support base is disposed in the gap and is connected to both the car and the mounting base.

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