Anti-collision electric hoist

Abstract

The utility model discloses an anti-collision electric hoist, which relates to the technical field of hoisting mechanical equipment protection and comprises a lifting winding drum, an electric sports car rolling on an I-shaped beam is assembled on the upper half outer wall of the lifting winding drum, and a steel wire rope extending below the lifting winding drum is wound in the lifting winding drum. The outer wall of the electric sports car is slidably sleeved with a lifting hook, and the tail end of the steel wire rope is fixed to the outer wall of the rear curved surface of the lifting winding drum. The distance between the electric hoist and the two ends of the I-shaped beam is detected through the photoelectric switch, so that the two ends of the electric hoist are prevented from being collided, the protection assembly deals with the situation that the electric hoist continues to walk under the condition that power is cut off due to inertia or aging factors, stress in the protection assembly makes contact with an external object firstly, and the protection assembly is prevented from being damaged. And the arc piece achieves the braking effect on the electric hoist through the impact force, and then the impact condition caused by continuous walking of the electric hoist is stopped.

Description

A type of anti-collision electric hoist Technical Field

[0001] This utility model relates to the field of protection technology for lifting machinery and equipment, specifically to an anti-collision electric hoist. Background Technology

[0002] In recent years, the rapid development of my country's large-scale infrastructure construction, energy industry, real estate industry, petrochemical industry, and shipbuilding industry has driven the development of heavy machinery manufacturing, such as cranes. Cranes come in many types to adapt to different working environments, and the electric hoist on a crane is the main lifting equipment used to lift and hoist goods. An electric hoist, also known simply as an electric hoist, is a small and lightweight lifting device characterized by its small size, light weight, and simple operation.

[0003] A search of existing patents on the China Patent Network (publication number: CN 217458507 U) reveals an electric hoist limit and anti-collision device. By incorporating a first buffer component and a second buffer component, it can protect the electric hoist body from collision when the anti-collision plate collides with the limit baffle. This effectively reduces the impact force on the electric hoist body when it reaches the limit baffle, preventing damage to the electric hoist body and extending its service life.

[0004] However, the above technical solutions still have certain defects. When the electric hoist moves to the end on the I-beam, the anti-collision plate protects the electric hoist, but the point of force is still on the electric hoist. Due to the elasticity factor, the electric hoist will vibrate laterally, which will cause damage to the internal components (such as wire detachment). Therefore, an anti-collision electric hoist is proposed. Summary of the Invention

[0005] Therefore, the purpose of this utility model is to provide an anti-collision electric hoist to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-collision electric hoist, including a lifting drum, an electric trolley that rolls on an I-beam mounted on the upper outer wall of the lifting drum, a steel wire rope that extends to the bottom of the lifting drum wound inside the lifting drum, a hook that is slidably sleeved on the outer wall of the electric trolley, the end of the steel wire rope being fixed to the rear curved outer wall of the lifting drum, and protective components mounted on both sides of the electric trolley above the lifting drum;

[0007] The protective assembly includes a horizontal plate welded to a lifting drum. A force-bearing block is provided on the end of the horizontal plate away from the electric trolley. Two sets of force-bearing rods extending into the interior of the horizontal plate are fixed to the end of the force-bearing block. A blind hole is provided at the position where the horizontal plate contacts the force-bearing rods. A spring connected to the end of the force-bearing rod is installed in the blind hole. A photoelectric switch is bolted to the top of the horizontal plate. A driven rod extending to the front and rear outer sides of the horizontal plate is fixed to the curved outer wall of the two sets of force-bearing rods. A clearance groove communicating with the blind hole is provided on the front and rear surfaces of the horizontal plate. A limit seat is fixed to the end face of the electric trolley. An arc plate is installed on the inner side of the electric trolley. A base rod is welded to the curved outer wall of the arc plate. A connecting rod penetrating the limit seat is fixedly wrapped on the outer wall of the base rod. A connecting rod is fixedly connected between the connecting rod and the driven rod.

[0008] As a preferred technical solution, the connecting rod and the limiting seat are in a perpendicular state, and a stroke groove is provided in the limiting seat at the position where it contacts the connecting rod.

[0009] As a preferred technical solution, the electric trolley includes two sets of support plates welded to the outer wall of the lifting drum. Two sets of rollers are rolled on the side of the two sets of support plates that are relatively close to each other. The base rod is assembled on one side of the curved surface of the rollers. A drive motor for driving the rollers to roll is assembled on the outer wall of one set of support plates.

[0010] As a preferred technical solution, a control box is mounted on one side of the photoelectric switch at the top of the horizontal plate. The control box contains components such as a battery that provides power to the photoelectric switch and a signal processing module. Photoelectric switches and control boxes are also mounted on the outer walls of both sides of the hook.

[0011] As a preferred technical solution, a remote control handle is connected to the front side of the lifting drum, and the remote control handle is connected to the control box installed on the outer wall of the lifting drum by means of a wire.

[0012] As a preferred technical solution, the blind hole and the force-bearing rod are in a matching state, and the two ends of the spring are respectively fixed to the end of the force-bearing rod and the inner wall of the blind hole.

[0013] As a preferred technical solution, the distance between the force-bearing block and the end face of the lifting drum is greater than the travel distance of the connecting rod within the travel groove.

[0014] In summary, the present invention has the following main advantages:

[0015] This invention uses a photoelectric switch to detect the distance between the electric hoist and the two ends of the I-beam, thereby preventing collisions between the two ends of the electric hoist. The protective component is designed to prevent the electric hoist from continuing to move even after power is cut off due to inertia or aging. The force in the protective component first comes into contact with the external object, and the impact force causes the arc plate to brake the electric hoist, thus preventing the electric hoist from continuing to move and causing a collision. Attached Figure Description

[0016] Figure 1 is a first-view structural diagram of the electric hoist of this utility model;

[0017] Figure 2 is a structural diagram of the lifting drum and protective assembly of this utility model;

[0018] Figure 3 is a cross-sectional view of the protective component of this utility model;

[0019] Figure 4 is a three-dimensional structural diagram of the hook of this utility model;

[0020] Figure 5 is a second-view structural diagram of the electric hoist of this utility model.

[0021] In the diagram: 100, hoisting drum; 110, wire rope; 120, hook; 130, electric trolley; 140, remote control handle;

[0022] 200. Protective component; 210. Horizontal plate; 211. Leaving groove; 212. Blind hole; 213. Spring; 220. Force block; 230. Force rod; 240. Driven rod; 250. Connecting rod; 260. Limit seat; 261. Stroke groove; 270. Arc plate; 271. Base rod; 272. Connecting rod; 280. Photoelectric switch; 281. Control box. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] An anti-collision electric hoist, as shown in Figures 1 to 5, includes a lifting drum 100, an electric trolley 130 that rolls on an I-beam mounted on the upper outer wall of the lifting drum 100, a steel wire rope 110 that extends to the bottom of the lifting drum 100 wound inside the lifting drum 100, a hook 120 that is slidably sleeved on the outer wall of the electric trolley 130, the end of the steel wire rope 110 being fixed to the rear curved outer wall of the lifting drum 100, and protective components 200 mounted on both sides of the electric trolley 130 above the lifting drum 100.

[0026] The protective assembly 200 includes a horizontal plate 210 welded to the lifting drum 100. A force-bearing block 220 is provided on the end of the horizontal plate 210 away from the electric trolley 130. Two sets of force-bearing rods 230 extending into the horizontal plate 210 are fixed to the end of the force-bearing block 220. A blind hole 212 is provided at the contact point between the horizontal plate 210 and the force-bearing rods 230. A spring 213 connected to the end of the force-bearing rod 230 is installed in the blind hole 212. A photoelectric switch 280 is bolted to the top of the horizontal plate 210. The two sets of force-bearing rods 230... The curved outer wall of 0 is fixed with a driven rod 240 extending to the front and rear outer sides of the horizontal plate 210. The front and rear surfaces of the horizontal plate 210 are provided with clearance grooves 211 that communicate with blind holes 212. The end face of the electric sports car 130 is fixed with a limit seat 260. The inner side of the electric sports car 130 is equipped with an arc plate 270. The curved outer wall of the arc plate 270 is welded with a base rod 271. The outer wall of the base rod 271 is fixedly wrapped with a connecting rod 272 that penetrates the limit seat 260. A connecting rod 250 is fixedly connected between the connecting rod 272 and the driven rod 240.

[0027] The connecting rod 272 is perpendicular to the limiting seat 260, and a stroke groove 261 is provided in the limiting seat 260 at the position where it contacts the connecting rod 272.

[0028] The electric sports car 130 includes two sets of support plates welded to the outer wall of the lifting drum 100. Two sets of rollers are rolled on the side of the two sets of support plates that are relatively close to each other. The base rod 271 is mounted on one side of the curved surface of the rollers. The outer wall of one set of support plates is equipped with a drive motor that drives the rollers to roll.

[0029] When the electric hoist moves on the I-beam, the photoelectric switches 280 at both ends detect the distance between the hoist and the ends of the I-beam. When the electric hoist moves close to the end of the I-beam, if the distance between the hoist and the end is less than or equal to the distance preset by the photoelectric switches 280, the circuit between the electric hoist and the outside world is disconnected, thereby stopping the electric hoist from moving and avoiding collisions. Similarly, the hook 120 also uses the above technical principle to avoid collisions with the ground, thereby extending the service life of the electric hoist.

[0030] When the electric hoist continues to move on the I-beam due to aging or inertia after a power outage, the force block 220 may come into contact with external objects. At this time, the force rod 230 will retract into the blind hole 212 and compress the spring. The driven rod 240 will move along with it and push the connecting rod 250 to move inward. Through the connecting rod 272 and the base rod 271, the arc plate 270 will move closer to the roller in the electric carriage 130 until it is in contact with the roller, thus braking the electric hoist and preventing it from continuing to move. This provides a good anti-collision protection effect for the electric hoist.

[0031] Please refer to Figures 3 and 4. A control box 281 is mounted on one side of the photoelectric switch 280 at the top of the horizontal plate 210. The control box 281 contains components such as a battery that provides power to the photoelectric switch 280 and a signal processing module. The photoelectric switch 280 and the control box 281 are also mounted on the outer walls of both sides of the hook 120.

[0032] The photoelectric switch 280 is a diffuse reflection type, which does not require a reflector and has a short detection distance (a few centimeters to several meters). When the photoelectric switch 280 is close to the end of the I-beam or the hook 120 is close to the ground, it sends an electrical signal to the internal module, thereby disconnecting the circuit of the electric trolley 130 and the lifting drum 100, preventing the electric hoist from being damaged by collision.

[0033] Please refer to Figure 1. A remote control handle 140 is connected to the front side of the hoisting drum 100. The remote control handle 140 is connected to the control box installed on the outer wall of the hoisting drum 100 by a wire.

[0034] A person can manually control the electric hoist to move on the I-beam or raise and lower the hook 120 by holding the remote control handle 140 on the ground, thereby achieving the purpose of moving heavy objects.

[0035] Please refer to Figures 2 and 3. The blind hole 212 is in a matching state with the force rod 230. The two ends of the spring 213 are fixed to the end of the force rod 230 and the inner wall of the blind hole 212, respectively.

[0036] When the force-bearing block 220 comes into contact with an external object, the force-bearing rod 230 can be horizontally inserted into the blind hole 212 until it has a braking effect on the electric sports car 130.

[0037] Please refer to Figures 1 and 5. The distance between the force-bearing block 220 and the end face of the lifting drum 100 is greater than the travel distance of the connecting rod 272 within the travel groove 261.

[0038] This ensures that the distance between the force-bearing block 220 and the lifting drum 100 is sufficient for the force-bearing rod 230 to bend, which can better cope with sudden situations and further protect the lifting drum 100 from collisions.

[0039] When in use, the electric hoist moves on the I-beam, and the photoelectric switches 280 at both ends detect the distance between itself and the two ends of the I-beam. When the electric hoist moves close to the end of the I-beam, if its distance is less than or equal to the distance preset by the photoelectric switches 280, the circuit between the electric hoist and the outside world is disconnected, thereby stopping the electric hoist from moving and avoiding collisions. Similarly, the hook 120 also adopts the above technical principle to avoid collisions with the ground, thereby extending the service life of the electric hoist.

[0040] When the electric hoist continues to move on the I-beam due to aging or inertia after a power outage, the force block 220 may come into contact with an external object. At this time, the force rod 230 will retract into the blind hole 212 and compress the spring. The driven rod 240 will move along with it and push the connecting rod 250 to move inward. Through the connecting rod 272 and the base rod 271, the arc plate 270 will move closer to the roller in the electric carriage 130 until it is in contact with the roller, thus braking and preventing the electric hoist from continuing to move. This can provide a better anti-collision protection effect for the electric hoist. The parts not mentioned in this device are the same as or can be implemented using existing technology.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A collision-resistant electric hoist, comprising a lifting drum (100), characterized in that: The upper outer wall of the lifting drum (100) is fitted with an electric trolley (130) that rolls on an I-beam. A steel wire rope (110) extending to the bottom of the lifting drum (100) is wound inside the lifting drum (100). A hook (120) is slidably fitted onto the outer wall of the electric trolley (130). The end of the steel wire rope (110) is fixed to the rear curved outer wall of the lifting drum (100). The upper part of the lifting drum (100) is located above the electric... The sports car (130) is equipped with protective components (200) on both sides; the protective components (200) include a horizontal plate (210) welded to the lifting drum (100), and a force-bearing block (220) is provided on the end of the horizontal plate (210) away from the electric sports car (130). Two sets of force-bearing rods (230) extending into the interior of the horizontal plate (210) are fixed to the end of the force-bearing block (220), and the horizontal plate (210) contacts the force-bearing rods (230). A blind hole (212) is provided at the position of the horizontal plate (210), and a spring (213) connected to the end of the force rod (230) is installed in the blind hole (212). A photoelectric switch (280) is bolted to the top of the horizontal plate (210). The curved outer walls of the two sets of force rods (230) are fixed with driven rods (240) extending to the front and rear outer sides of the horizontal plate (210). The front and rear surfaces of the horizontal plate (210) are provided with clearance grooves that communicate with the blind hole (212). (211) A limiting seat (260) is fixed on the end face of the electric sports car (130). An arc plate (270) is assembled on the inner side of the electric sports car (130). A base rod (271) is welded to the curved outer wall of the arc plate (270). A connecting rod (272) that penetrates the limiting seat (260) is fixedly wrapped on the outer wall of the base rod (271). A connecting rod (250) is fixedly connected between the connecting rod (272) and the driven rod (240).

2. The anti-collision electric hoist according to claim 1, characterized in that: The connecting rod (272) is perpendicular to the limiting seat (260), and a stroke groove (261) is provided in the limiting seat (260) at the position where it contacts the connecting rod (272).

3. The anti-collision electric hoist according to claim 1, characterized in that: The electric trolley (130) includes two sets of support plates welded to the outer wall of the lifting drum (100). Two sets of rollers are rolled on the side of the two sets of support plates that are close to each other. The base rod (271) is mounted on one side of the curved surface of the rollers. A drive motor for driving the rollers to roll is mounted on the outer wall of one set of support plates.

4. The anti-collision electric hoist according to claim 1, characterized in that: A control box (281) is mounted on one side of the photoelectric switch (280) at the top of the horizontal plate (210). The control box (281) contains components such as a battery that provides power to the photoelectric switch (280) and a signal processing module. The photoelectric switch (280) and the control box (281) are also mounted on the outer walls of both sides of the hook (120).

5. The anti-collision electric hoist according to claim 1, characterized in that: A remote control handle (140) is connected to the front side of the lifting drum (100), and the remote control handle (140) is connected to the control box installed on the outer wall of the lifting drum (100) by means of a wire.

6. The anti-collision electric hoist according to claim 1, characterized in that: The blind hole (212) is in a matching state with the force rod (230), and the two ends of the spring (213) are respectively fixed to the end of the force rod (230) and the inner wall of the blind hole (212).

7. The anti-collision electric hoist according to claim 1, characterized in that: The distance between the force-bearing block (220) and the end face of the lifting drum (100) is greater than the travel distance of the connecting rod (272) within the travel groove (261).

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