Anti-explosion electric hoist capable of preventing top rushing

Abstract

The utility model relates to the technical field of electric hoists, and discloses an anti-top-rushing anti-explosion electric hoist which comprises an electric hoist and a hook arranged at the bottom end of the electric hoist, an anti-top-rushing mechanism is arranged below the electric hoist, stabilizing mechanisms are arranged on the two sides of the anti-top-rushing mechanism, and the hook can drive a supporting plate to move upwards. Then the supporting plate can drive a top plate to move upwards, the top plate can make contact with a stress rotating plate and extrude the stress rotating plate along with movement of the top plate, the extruded stress rotating plate can drive a first rotating shaft to rotate, a first torsional spring can be driven to rotate through rotation of the first rotating shaft, and therefore the other side plate of the stress rotating plate can rotate downwards; when the hook ascends, the hook can make contact with the steel rope and clamp and limit the steel rope of the electric hoist, at the moment, the steel rope can generate friction force with the stress rotating plate, and therefore jacking force generated when the hook ascends is preliminarily relieved, and follow-up impact force on the buffering sliding column can be weakened.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric hoists, and in particular relates to an explosion-proof electric hoist with anti-top impact function. Background Art

[0002] An electric hoist is a special type of lifting equipment installed on overhead cranes and gantry cranes. It features small size, light weight, simple operation, and ease of use, making it suitable for industrial and mining enterprises, warehouses, docks, and other locations. The electric hoist consists of a housing, within which is mounted a drum wound with a wire rope, which is attached to a hook assembly for hooking cargo for easy lifting. Explosion-proof electric hoists are a lightweight, compact type of lifting equipment with low weight, small size, and high lifting capacity. When explosive mixtures are present in a factory, they are a useful tool for improving working conditions and increasing productivity while ensuring safety. They are essential equipment for production.

[0003] A search of CN 216836905U discloses an anti-top impact device for an electric hoist. The first anti-top impact component is used to be installed at the bottom of the electric hoist body, and the second anti-top impact component is used to be installed on the top of the hook assembly. The first anti-top impact component and the second anti-top impact component work together to protect the electric hoist body and the hook assembly and reduce their damage.

[0004] This device can only provide a preliminary buffering effect on the electric hoist body to prevent the bottom hook from directly contacting the body. However, the device cannot provide a certain buffering effect on the rising speed of the hook before preventing the top impact. This will cause all the energy of the rising hook to directly contact the buffer plate, which will shorten the service life of the buffer plate in the long run.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the technical problem that the device can only provide a preliminary buffering effect on the electric hoist body to prevent the bottom hook from directly contacting the body, but the device cannot provide a certain buffering effect on the rising speed of the hook before the anti-top protection is performed, which will cause all the energy of the hook rising to directly contact the buffer plate, which will increase the service life of the buffer plate in the long run, the basic concept of the technical solution adopted by the utility model is:

[0007] An anti-top impact explosion-proof electric hoist, comprising an electric hoist;

[0008] A hook is provided at the bottom end of the electric hoist, an anti-collision mechanism is provided below the electric hoist, and stabilizing mechanisms are provided on both sides of the anti-collision mechanism. The anti-collision mechanism includes a support plate fixedly connected to the outer wall of the hook:

[0009] The support plate top end is fixedly connected with a top plate, the electric hoist bottom end is provided with a support frame, the support frame outer wall is fixedly connected with a fixed plate, the fixed plate bottom end is provided with a concave hole, the concave hole inner wall top end is fixedly connected with a damper, the damper bottom end is fixedly connected with a buffer slide column, the buffer slide column top end is fixedly connected with a buffer spring, the buffer spring far end away from the buffer slide column is fixedly connected with the concave hole inner wall top end, the fixed plate bottom end is fixedly connected with a fixed frame, the fixed frame inner wall is provided with a rotating hole, the rotating hole inner wall is fixedly connected with a first torsion spring, the first torsion spring far end away from the rotating hole inner wall is fixedly connected with a first rotating shaft, the first rotating shaft outer wall is rotatably arranged in the rotating hole inner wall, and the first rotating shaft outer wall is fixedly connected with a stress rotating plate.

[0010] As a preferred embodiment of the utility model, the stabilizing mechanism comprises a second torsion spring, the support frame inner wall is provided with a rotating groove, one end of the second torsion spring is fixedly connected with the rotating groove inner wall, the second torsion spring far end away from the rotating groove inner wall is fixedly connected with a second rotating shaft, the second rotating shaft outer wall is rotatably arranged in the rotating groove inner wall, the second rotating shaft outer wall is wound with a stabilizing rope, and the stabilizing rope far end away from the second rotating shaft is fixedly arranged on the hook outer wall.

[0011] As a preferred embodiment of the utility model, the buffer slide column number is two, the buffer slide columns are symmetrically distributed on the left and right sides of the fixed plate bottom end, and the outer wall is matched with the concave hole inner wall of the fixed plate bottom end.

[0012] As a preferred embodiment of the utility model, the stress rotating plate number is two, and the stress rotating plates are symmetrically distributed on the left and right sides of the fixed plate bottom end.

[0013] As a preferred embodiment of the utility model, the fixed frame one side outer wall is provided with a recess, and the stress rotating plate one side rotating plate is movably arranged in the recess inner wall.

[0014] As a preferred embodiment of the utility model, the stabilizing rope number is two, and the stabilizing ropes are symmetrically distributed on the left and right sides of the hook outer wall.

[0015] As a preferred embodiment of the utility model, the second rotating shaft outer wall is matched with the rotating groove inner wall formed in the support frame inner wall.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses, the hook will drive the support plate to move upwards, then the support plate will drive the top plate to move upwards, with the movement of top plate will contact and produce extrusion effect to the stress conversion board, the stress conversion board that is extruded will drive the first rotating shaft to produce rotation, and the rotation of first rotating shaft will drive the first torsional spring to rotate, and the other side board of stress conversion board will rotate downwards, then will contact and produce clamping limiting effect to the steel rope of electric hoist, the steel rope will produce friction force with stress conversion board at this time, thereby the top force that the hook rises produces is preliminary slowed down, and the impact force of subsequent buffer slide pillar is weakened in this way, with the continuous rising of top plate, will contact buffer slide pillar, then buffer slide pillar slides upwards and produces extrusion to damper, and extrusion effect is carried out to buffer spring to the buffer cooperation of both, the hook of preliminary unloading can be buffered again, prevent the hook from producing impact force to electric hoist body directly, thereby the electric hoist is protected and is not damaged.

[0018] The utility model discloses, the stable rope of both sides of hook will produce certain stabilization effect to hook, prevent the hook from producing swing when hoisting goods or appearing to hit the top, thereby causes goods to fall phenomenon etc., when the hook is in the process of rising or falling, the second torsional spring will produce rotation or rebound rotation, and this drives the second rotating shaft to carry out winding or release effect, thereby winding and releasing to stable rope, and this can improve the stability of hook.

[0019] The utility model discloses a specific implementation mode is further detailed in combination with the drawings. DRAWINGS

[0020] In the drawings:

[0021] Figure 1 It is whole structure schematic diagram of the utility model;

[0022] Figure 2 It is bottom end view structure schematic diagram of the utility model;

[0023] Figure 3 It is anti -top -strike mechanism sectional structure schematic diagram of the utility model;

[0024] Figure 4 It is anti -top -strike mechanism partial structure schematic diagram of the utility model;

[0025] Figure 5 It is stable mechanism structure schematic diagram of the utility model.

[0026] In the figure: 1. Electric hoist; 2. Hook; 31. Anti-collision mechanism; 311. Support plate; 312. Top plate; 313. Fixed plate; 314. Damper; 315. Buffer spring; 316. Buffer slide; 317. Fixed frame; 318. First torsion spring; 319. First rotating shaft; 3110. Force-bearing rotating plate; 32. Stabilizing mechanism; 321. Support frame; 322. Second torsion spring; 323. Second rotating shaft; 324. Stabilizing rope; 325. Roller. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0028] like Figures 1 to 5 As shown, an explosion-proof electric hoist with anti-collision top includes an electric hoist 1, a hook 2 arranged at the bottom end of the electric hoist 1, an anti-collision top mechanism 31 is arranged below the electric hoist 1, and a stabilizing mechanism 32 is arranged on both sides of the anti-collision top mechanism 31. The anti-collision top mechanism 31 includes a support plate 311 fixedly connected to the outer wall of the hook 2, and a top plate 312 is fixedly connected to the top of the support plate 311. A support frame 321 is provided at the bottom end of the electric hoist 1, and a fixing plate 313 is fixedly connected to the outer wall of the support frame 321. A concave hole is opened at the bottom end of the fixing plate 313, and a damper 314 is fixedly connected to the top of the inner wall of the concave hole. The bottom end of the device 314 is fixedly connected to a buffer slide 316, and the top of the buffer slide 316 is fixedly connected to a buffer spring 315. The end of the buffer spring 315 away from the buffer slide 316 is fixedly connected to the top of the inner wall of the concave hole. The bottom end of the fixed plate 313 is fixedly connected to a fixed frame 317. A rotating hole is provided on the inner wall of the fixed frame 317. The inner wall of the rotating hole is fixedly connected to a first torsion spring 318. The end of the first torsion spring 318 away from the inner wall of the rotating hole is fixedly connected to a first rotating shaft 319. The outer wall of the first rotating shaft 319 is rotatably set on the inner wall of the rotating hole, and the outer wall of the first rotating shaft 319 is fixedly connected to a force-bearing rotating plate 3110.

[0029] Furthermore, there are two buffer slides 316, and the buffer slides 316 are distributed on the left and right sides of the bottom end of the fixed plate 313 in a left-right symmetrical structure, and the outer walls are in close contact with the inner walls of the concave holes at the bottom end of the fixed plate 313, so that the hooks 2 can be buffered on both sides, thereby greatly reducing the degree of damage to the electric hoist 1.

[0030] Furthermore, there are two force-bearing rotating plates 3110, which are distributed on the left and right sides of the bottom end of the fixed plate 313 in a left-right symmetrical structure, so that a clamping effect can be formed on the left and right sides of the steel rope of the electric hoist 1, thereby initially slowing down the upward force of the hook 2.

[0031] Further, the fixed frame 317 has a groove on one side of the outer wall, and one side of the stress rotating plate 3110 is movably arranged in the inner wall of the groove, so that the other side of the stress rotating plate 3110 can provide a rotating space.

[0032] The stabilizing mechanism 32 comprises a second torsion spring 322, and the support frame 321 has a rotating groove in the inner wall, and one end of the second torsion spring 322 is fixedly connected to the inner wall of the rotating groove, and the other end of the second torsion spring 322 away from the inner wall of the rotating groove is fixedly connected with a second rotating shaft 323, and the outer wall of the second rotating shaft 323 is rotatably arranged in the inner wall of the rotating groove, and the outer wall of the second rotating shaft 323 is wound with a stabilizing rope 324, and one end of the stabilizing rope 324 away from the second rotating shaft 323 is fixedly arranged on the outer wall of the hook 2, and the outer wall of the bottom side of the support frame 321 is rotatably provided with a rolling shaft 325, and the outer wall of the stabilizing rope 324 movably contacts the outer wall of the rolling shaft 325.

[0033] Further, the number of stabilizing ropes 324 is two, and the stabilizing ropes 324 are symmetrically arranged on the left and right outer walls of the hook 2, so that the left and right sides of the hook 2 can be uniformly supported, thereby improving the stability of the hook 2 during the lifting and lowering process.

[0034] Further, the outer wall of the second rotating shaft 323 is matched with the inner wall of the rotating groove in the inner wall of the support frame 321, so as to ensure the close fit between the outer wall of the second rotating shaft 323 and the inner wall of the rotating groove, thereby improving the stability of the second rotating shaft 323 during rotation.

[0035] The implementation principle of the anti-top-punching explosion-proof electric hoist of the present embodiment is as follows: when the top punching phenomenon occurs, the hook 2 will drive the support plate 311 to move upwards, and then the support plate 311 will drive the top plate 312 to move upwards, and the movement of the top plate 312 will contact and press the stress rotating plate 3110, the stress rotating plate 3110 subjected to the pressing will drive the first rotating shaft 319 to rotate, and the rotation of the first rotating shaft 319 will drive the first torsion spring 318 to rotate, so that the other side of the stress rotating plate 3110 will rotate downwards, and then it will contact and clamp the steel rope of the electric hoist 1, at this time the steel rope will generate friction with the stress rotating plate 3110, thereby preliminarily reducing the top force generated when the hook 2 rises, so as to weaken the subsequent impact force on the buffer slide column 316, and with the continuous rising of the top plate 312, the buffer slide column 316 will slide upwards and press the damper 314, and at the same time, the buffer spring 315 will be pressed, and through the buffer cooperation of the two, the hook 2 after preliminary unloading can be buffered again, so as to prevent the hook 2 from directly impacting the electric hoist 1, thereby protecting the electric hoist 1 from being damaged.

[0036] The stabilizing ropes 324 on both sides of the hook 2 will stabilize the hook 2, preventing the hook 2 from shaking and swinging when lifting the cargo or when the hook 2 hits the top, thereby causing the cargo to fall, etc. When the hook 2 is rising or falling, the second torsional spring 322 will rotate or rebound, thereby driving the second rotating shaft 323 to wind or release, thereby winding and releasing the stabilizing rope 324, so as to improve the stability of the hook 2.

Claims

1. An explosion-proof electric hoist with anti-top impact, comprising an electric hoist (1); The hook (2) provided at the bottom end of the electric hoist (1) is characterized in that: An anti-collision mechanism (31) is provided below the electric hoist (1), stabilizing mechanisms (32) are provided on both sides of the anti-collision mechanism (31), and the anti-collision mechanism (31) includes a support plate (311) fixedly connected to the outer wall of the hook (2): The top of the support plate (311) is fixedly connected to a top plate (312), the bottom of the electric hoist (1) is provided with a support frame (321), the outer wall of the support frame (321) is fixedly connected to a fixing plate (313), the bottom of the fixing plate (313) is provided with a concave hole, the top of the inner wall of the concave hole is fixedly connected to a damper (314), the bottom of the damper (314) is fixedly connected to a buffer slide (316), the top of the buffer slide (316) is fixedly connected to a buffer spring (315), the buffer spring (315) is fixedly connected to the top of the buffer slide (315). ) is fixedly connected to the top of the inner wall of the concave hole at one end away from the buffer slide (316), and the bottom end of the fixed plate (313) is fixedly connected to a fixed frame (317), and a rotating hole is opened on the inner wall of the fixed frame (317), and a first torsion spring (318) is fixedly connected to the inner wall of the rotating hole. The first torsion spring (318) is fixedly connected to the first rotating shaft (319) at one end away from the inner wall of the rotating hole, and the outer wall of the first rotating shaft (319) is rotatably set on the inner wall of the rotating hole, and the outer wall of the first rotating shaft (319) is fixedly connected to a force-bearing rotating plate (3110).

2. The explosion-proof electric hoist with anti-top impact according to claim 1, characterized in that: The stabilizing mechanism (32) includes a second torsion spring (322), a rotation groove is provided on the inner wall of the support frame (321), one end of the second torsion spring (322) is fixedly connected to the inner wall of the rotation groove, one end of the second torsion spring (322) away from the inner wall of the rotation groove is fixedly connected to a second rotating shaft (323), the outer wall of the second rotating shaft (323) is rotatably arranged on the inner wall of the rotation groove, a stabilizing rope (324) is wound on the outer wall of the second rotating shaft (323), one end of the stabilizing rope (324) away from the second rotating shaft (323) is fixedly arranged on the outer wall of the hook (2), a roller (325) is rotatably provided on the outer wall of one side of the bottom end of the support frame (321), and the outer wall of the stabilizing rope (324) is movably contacted with the outer wall of the roller (325).

3. The anti-top impact explosion-proof electric hoist according to claim 1, characterized in that: There are two buffer slides (316), which are distributed on the left and right sides of the bottom end of the fixed plate (313) in a bilaterally symmetrical structure, and the outer walls thereof are fitted with the inner walls of the concave holes at the bottom end of the fixed plate (313).

4. The anti-top impact explosion-proof electric hoist according to claim 1, characterized in that: There are two force-bearing rotating plates (3110), and the force-bearing rotating plates (3110) are distributed on the left and right sides of the bottom end of the fixed plate (313) in a bilaterally symmetrical structure.

5. The anti-top impact explosion-proof electric hoist according to claim 1, characterized in that: A groove is provided on one side outer wall of the fixed frame (317), and a rotating plate on one side of the force-bearing rotating plate (3110) is movably arranged on the inner wall of the groove.

6. The anti-top-impact explosion-proof electric hoist according to claim 2, characterized in that: There are two stabilizing ropes (324), and the stabilizing ropes (324) are distributed on the left and right outer walls of the hook (2) in a bilaterally symmetrical structure.

7. The anti-top impact explosion-proof electric hoist according to claim 2, characterized in that: The outer wall of the second rotating shaft (323) fits snugly with the inner wall of the rotating groove formed on the inner wall of the supporting frame (321).

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