Elevator anti-fall protection device

Abstract

The utility model provides an elevator anti-fall protection device, which mainly relates to the technical field of elevator safety devices. An elevator anti-fall protection device comprises a car and two symmetrically arranged guide rails, a rack is fixedly installed in the guide rail, and a limit assembly that can engage with the rack is provided at the back of the car. The beneficial effect of the utility model is that when the device is in use, the angle of the L-shaped limit rod is adjusted by the mutual cooperation of the bidirectional synchronous electric push rod and the connecting rod in the limit assembly, so that the L-shaped limit rod can be engaged with the rack, thereby achieving the limitation of the car, preventing the car from falling during the electric push maintenance process, and improving the safety performance of the elevator.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of elevator safety devices, in particular to an elevator anti-fall protection device. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rigid tracks that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. During the use of the elevator, it is necessary to regularly inspect the running elevator components, refuel, remove dust, and debug safety devices, including non-destructive testing and lubrication maintenance of the elevator traction wire rope.

[0003] In the prior art, when an elevator is shut down for maintenance, the weight of the elevator is generally borne by the traction machine and the wire rope, which are subject to a large load. Currently, most elevators use protective devices such as speed limiters and safety clamps to provide safety protection. However, the speed limiter and the safety clamp will only be triggered after the elevator falls at high speed. Especially during the maintenance of the traction machine, the load of the traction machine itself is affected, and there is a risk of the car falling. In order to improve the safety of elevator maintenance, we provide an elevator anti-fall protection device. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an elevator anti-fall protection device, which can limit the position of the car through the clamping connection between the L-shaped limiting plate and the rack to prevent the car from falling.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] An elevator anti-fall protection device comprises a car and two symmetrically arranged guide rails, wherein a rack is fixedly installed in the guide rails, and a limit assembly capable of engaging with the rack is provided at the rear of the car.

[0007] Furthermore, the limiting assembly includes a bidirectional synchronous electric push rod, which is fixedly installed at the rear of the car, and support rods are respectively fixedly installed on both sides of the rear of the car, and L-shaped limiting rods are rotatably installed on the support rods. The movable ends of the bidirectional synchronous electric push rods are respectively rotatably installed with connecting rods, one end of the connecting rod is respectively rotatably connected to the lower end of the L-shaped limiting rod on the same side, and the L-shaped limiting rod can engage with the corresponding rack.

[0008] Furthermore, the rack includes a fixed plate and a tooth block, and a plurality of evenly distributed tooth blocks are fixedly mounted on the inner side of the fixed plate, and the tooth blocks are all arranged obliquely upward.

[0009] Furthermore, the cross section of the guide rail is a U-shaped structure, and the opening of the guide rail faces the car.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] When the device is in use, the angle of the L-shaped limit rod is adjusted by the mutual cooperation of the bidirectional synchronous electric push rod and the connecting rod in the limit assembly, so that the L-shaped limit rod can be engaged with the rack, thereby limiting the car, preventing the car from falling during the electric push maintenance process, and improving the safety performance of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 yes Figure 1 A partial enlarged view of Ⅰ.

[0014] The numbers shown in the accompanying drawings are: 1, car; 2, guide rail; 3, rack; 301, fixed plate; 302, tooth block; 4, limit assembly; 401, bidirectional synchronous electric push rod; 402, support rod; 403, L-shaped limit rod; 404, connecting rod. DETAILED DESCRIPTION

[0015] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0016] Embodiment: An elevator anti-fall protection device

[0017] like Figure 1-2 As shown, an elevator anti-fall protection device, the specific structure of which includes:

[0018] A car 1 and two symmetrically arranged guide rails 2, wherein the guide rails 2 are installed on both sides of the inner wall of the elevator shaft, and the car 1 is located between the two guide rails 2, a rack 3 is fixedly installed in the guide rail 2, and a limiting component 4 that can engage with the rack 3 is provided at the back of the car 1.

[0019] The limiting assembly 4 includes a bidirectional synchronous electric push rod 401, which is fixedly installed at the rear of the car 1. Support rods 402 are fixedly installed on both sides of the rear of the car 1. L-shaped limiting rods 403 are rotatably installed on the support rods 402. Connecting rods 404 are rotatably installed at the movable ends of the bidirectional synchronous electric push rods 401. One end of the connecting rod 404 is rotatably connected to the lower end of the L-shaped limiting rod 403 on the same side. The L-shaped limiting rod 403 can be engaged with the corresponding rack 3. When this structural design is in use, the contraction of the movable rods on both sides of the bidirectional synchronous electric push rod 401 can drive the corresponding connecting rod 404 to pull the lower end of the L-shaped limit rod 403, so that the L-shaped limit rod 403 can rotate around the support rod 402, so that the other end of the L-shaped limit rod 403 can be inserted between the two tooth blocks 302, thereby realizing the engagement of the L-shaped limit rod 403 with the rack 3, realizing the limitation of the car 1, preventing the elevator from sliding downward during the elevator maintenance process, and further improving the safety of the elevator; conversely, the extension of the movable rods on both sides of the bidirectional synchronous electric push rod 401 can drive the corresponding connecting rod 404 to push the lower end of the L-shaped limit rod 403, so that the L-shaped limit rod 403 can rotate in the opposite direction around the support rod 402, so that the other end of the L-shaped limit rod 403 can be separated from the corresponding tooth block 302. The structure is simple and easy to use.

[0020] The rack 3 includes a fixed plate 301 and a tooth block 302. A plurality of evenly distributed tooth blocks 302 are fixedly mounted on the inner side of the fixed plate 301, and the tooth blocks 302 are all arranged obliquely upward. The obliquely arranged tooth blocks 302 can prevent the L-shaped limit rod 403 from being easily disengaged after being engaged with the tooth blocks 302, further improving the safety of the device.

[0021] The cross section of the guide rail 2 is a U-shaped structure, and the opening of the guide rail 2 faces the car 1. The U-shaped guide rail 2 can play a corresponding protective role for the rack 3 inside it, and at the same time limit the rack 3 at the front and rear sides to improve the stability of the rack 3 when it is clamped with the L-shaped limit rod 403.

[0022] The present solution also includes a controller, the position of which is set by the staff according to actual conditions during operation. The controller is used to control the electrical devices used in the present solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication equipment, lights, speakers and microphones; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single-chip microcomputer, and the supporting motherboard, memory stick, storage medium and power supply are also included therewith, and the power supply is AC or a lithium battery; when a display screen is provided, a display card is also provided; for the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles of Microcontrollers and Application Simulation Cases" and "Principles and Applications of Sensors" published by Tsinghua University Press, and other books in the field can be used for reference; other automatic controls and electrical devices not mentioned are all knowledge well known to those skilled in the art and will not be repeated here.

[0023] Working principle:

[0024] When the device is in use, the guide rails 2 are installed on both sides of the inner wall of the elevator shaft. When the elevator is shut down for maintenance, the movable rods on both sides of the bidirectional synchronous electric push rod 401 are contracted, so that it drives the corresponding connecting rod 404 to pull the lower end of the L-shaped limit rod 403, so that the L-shaped limit rod 403 can rotate around the support rod 402, so that the other end of the L-shaped limit rod 403 can be inserted between the two tooth blocks 302, thereby realizing the engagement of the L-shaped limit rod 403 with the rack 3, realizing the limitation of the car 1, preventing the elevator from sliding downward during the elevator maintenance process, and further improving the safety of the elevator.

[0025] In the interpretation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other possible installation methods.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An elevator anti-fall protection device, comprising a car (1) and two symmetrically arranged guide rails (2), characterized in that: A rack (3) is fixedly installed in the guide rail (2), and a limit assembly (4) capable of engaging with the rack (3) is provided at the rear of the car (1).

2. An elevator anti-fall protection device according to claim 1, characterized in that: The limit assembly (4) comprises a bidirectional synchronous electric push rod (401), the bidirectional synchronous electric push rod (401) is fixedly installed at the rear of the car (1), support rods (402) are fixedly installed on both sides of the rear of the car (1), L-shaped limit rods (403) are rotatably installed on the support rods (402), and connecting rods (404) are rotatably installed on the movable ends of the bidirectional synchronous electric push rod (401), one end of the connecting rod (404) is rotatably connected to the lower end of the L-shaped limit rod (403) on the same side, and the L-shaped limit rod (403) can be engaged with the corresponding rack (3).

3. An elevator anti-fall protection device according to claim 2, characterized in that: The rack (3) comprises a fixed plate (301) and a tooth block (302); a plurality of evenly distributed tooth blocks (302) are fixedly mounted on the inner side of the fixed plate (301), and the tooth blocks (302) are all arranged obliquely upward.

4. The elevator anti-fall protection device according to claim 1, characterized in that: The cross section of the guide rail (2) is a U-shaped structure, and the opening of the guide rail (2) faces the car (1).

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