Top rushing prevention device for hoisting equipment

Abstract

The utility model discloses an anti-collision device of hoisting equipment in the technical field of hoisting equipment, which comprises a main beam and an electric hoist, the electric hoist is connected to the lower end of the main beam, the anti-collision device further comprises a hook and a buffer mechanism, a connecting shaft is rotatably arranged in the electric hoist, a steel wire rope is wound on the connecting shaft, and the steel wire rope is connected with the hook. Two ends of the steel wire rope movably extend out of the lower end of the electric hoist, the lower end of the steel wire rope is fixedly connected with a buffer plate, the hook is connected to the lower end of the buffer plate, and the buffer mechanism is connected to the electric hoist and the buffer plate. The buffering device has the advantages that the upper buffering assembly and the lower buffering assembly are matched with each other to achieve buffering of the hook, then the hook is effectively prevented from rushing, the buffering bearing force range can be adjusted through the upper buffering assembly according to actual requirements, the hook is connected through the connecting assembly, and the buffering effect is good. The stability of hook connection can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to an anti-overhead impact device for lifting equipment. Background Technology

[0002] A common type of crane uses an electric hoist that moves on a beam. The electric hoist drives the hook up and down via a wire rope. When the crane is working, if there is no load on the hook, the weight on the hook is too light. When the crane pulls the hook up via the wire rope, if the hook rises too quickly, it is particularly prone to overshooting due to inertia.

[0003] In existing technologies, buffering is achieved solely by setting up a buffer plate and springs, which is not very effective in preventing impact. Furthermore, different hooks have different weights and therefore different impact forces, making it impossible to adjust the level of buffering capacity. Utility Model Content

[0004] The technical problem this invention aims to solve is that simply setting up a buffer plate and spring for cushioning is not effective in preventing impact, and different hooks have different weights and impact forces, making it impossible to adjust the degree of cushioning.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A lifting equipment anti-collision device includes a main beam and an electric hoist. The electric hoist is connected to the lower end of the main beam. It also includes a hook and a buffer mechanism. A connecting shaft is rotatably provided inside the electric hoist. A steel wire rope is wound on the connecting shaft. Both ends of the steel wire rope extend movably from the lower end of the electric hoist. A buffer plate is fixed to the lower end of the steel wire rope. The hook is connected to the lower end of the buffer plate. The buffer mechanism is connected between the electric hoist and the buffer plate.

[0007] Furthermore, the buffer mechanism includes a lower buffer assembly, which is symmetrically fixed to the upper end of the buffer plate. The lower buffer assembly includes a mounting shell, a buffer block, and springs. The mounting shell is fixed to the upper end of the buffer plate. A connecting plate is fixed to the lower end of the buffer block. The connecting plate is slidably adapted to the mounting shell. The upper end of the buffer block slidably extends out of the mounting shell. Several limiting rods are fixed inside the mounting shell. Several springs are sleeved on the limiting rods. The upper ends of the springs abut against the connecting plate. Several through holes are provided on the buffer block. The limiting rods are slidably adapted to the through holes.

[0008] Furthermore, a buffer pad is fixed to the upper end of the buffer block, and the buffer pad is made of rubber.

[0009] Furthermore, the buffer mechanism also includes an upper buffer assembly, which is symmetrically connected inside the electric hoist. The upper buffer assembly includes an adjusting plate, buffer components, and a pressure plate. The adjusting plate is slidably connected inside the electric hoist. The buffer components are fixed to the lower end of the adjusting plate, and the pressure plate is fixed to the lower end of the buffer components. A first connecting block is fixedly connected to one side of the adjusting plate, and a screw is threadedly connected to the first connecting block. Motors are fixedly connected to both sides of the electric hoist, and the screws are fixedly connected to the output ends of the motors. A second connecting block is symmetrically fixed to the other side of the adjusting plate. Second sliding grooves are symmetrically provided on both sides inside the electric hoist, and the second connecting blocks are slidably adapted to fit within the second sliding grooves.

[0010] Furthermore, the electric hoist is symmetrically provided with mounting slots, which penetrate the lower end of the electric hoist. The buffer block slides into the mounting slot, the upper buffer assembly is connected to the mounting slot, and the adjusting plate and the pressure plate are both slidably connected to the mounting slot. A first sliding groove is provided on one side of the mounting slot, and the first connecting block is slidably adapted to the first sliding groove. A sliding rod is fixedly connected in the second sliding groove, and the second connecting block is slidably connected to the sliding rod.

[0011] Furthermore, it also includes a connecting assembly, which includes a fixing plate, bolts, and nuts. The fixing plates are symmetrically fixed to the lower end of the buffer plate. The hooks are arranged between the mutually symmetrical fixing plates. Washers are provided on both sides of the hooks. The bolts move through the fixing plates, washers, and hooks. The nuts are symmetrically arranged at both ends of the bolts. The nuts are threadedly connected to the bolts. A connecting ring is fixed to one side of the nuts. A threaded ring groove is provided on one side of the fixing plate. The connecting ring is threadedly connected to the threaded groove.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1: The upper and lower buffer components work together to cushion the hook, thereby effectively preventing the hook from hitting the top.

[0014] 2: The upper buffer component allows for adjustment of the buffering force range according to actual needs;

[0015] 3: Connecting the hook with the connecting component can effectively improve the stability of the hook connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire machine of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is an exploded view of the connecting component of this utility model.

[0019] Figure 4 This is a schematic diagram of the lower buffer component of this utility model.

[0020] Figure 5 This is a schematic diagram of the upper buffer component of this utility model.

[0021] Figure 6 Cross-sectional view of the electric hoist of this utility model Figure 1 .

[0022] Figure 7 Cross-sectional view of the electric hoist of this utility model Figure 2 .

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Main beam; 2. Electric hoist; 201. Mounting groove; 202. First slide groove; 203. Second slide groove; 3. Wire rope; 301. Connecting shaft; 4. Lower buffer assembly; 401. Buffer plate; 402. Mounting shell; 403. Buffer block; 404. Buffer pad; 405. Limiting rod; 406. Connecting plate; 407. Through hole; 408. Spring; 5. Hook; 6. Connecting assembly; 601. Fixing plate; 602. Threaded ring groove; 603. Nut; 604. Connecting ring; 605. Bolt; 606. Washer; 7. Upper buffer assembly; 701. Adjusting plate; 702. First connecting block; 703. Second connecting block; 704. Motor; 705. Screw; 706. Buffer component; 707. Pressure plate. Detailed Implementation

[0025] like Figure 1-7 As shown, a lifting equipment anti-collision device includes a main beam 1 and an electric hoist 2. The electric hoist 2 is connected to the lower end of the main beam 1. It also includes a hook 5 and a buffer mechanism. A connecting shaft 301 is rotatably provided inside the electric hoist 2. A steel wire rope 3 is wound on the connecting shaft 301. The two ends of the steel wire rope 3 extend movably from the lower end of the electric hoist 2. A buffer plate 401 is fixedly connected to the lower end of the steel wire rope 3. The hook 5 is connected to the lower end of the buffer plate 401. The buffer mechanism is connected between the electric hoist 2 and the buffer plate 401.

[0026] like Figure 4As shown, in order to cushion the hook 5 and prevent it from hitting the top, the cushioning mechanism includes a lower cushioning component 4, which is symmetrically fixed to the upper end of the cushioning plate 401. The lower cushioning component 4 includes a mounting shell 402, a cushioning block 403, and springs 408. The mounting shell 402 is fixed to the upper end of the cushioning plate 401. A connecting plate 406 is fixed to the lower end of the cushioning block 403. The connecting plate 406 is slidably adapted to the mounting shell 402. The upper end of the cushioning block 403 slides out of the mounting shell 402. Several limiting rods 405 are fixed inside the mounting shell 402. Several springs 408 are sleeved on the limiting rods 405. The upper ends of the springs 408 abut against the connecting plate 406. Several through holes 407 are provided on the cushioning block 403. The limiting rods 405 are slidably adapted to the through holes 407. A cushioning pad 404 is fixed to the upper end of the cushioning block 403. The cushioning pad 404 is made of rubber.

[0027] like Figure 5-7 As shown, in order to cooperate with the lower buffer assembly 4 to buffer the hook 5, and at the same time adjust the buffer bearing range according to the actual situation, the buffer mechanism also includes an upper buffer assembly 7. The upper buffer assembly 7 is symmetrically connected inside the electric hoist 2. The upper buffer assembly 7 includes an adjusting plate 701, a buffer element 706 and a pressure plate 707. The adjusting plate 701 is slidably connected inside the electric hoist 2. The buffer elements 706 are fixed to the lower end of the adjusting plate 701. The pressure plate 707 is fixed to the lower end of the buffer element 706. A first connecting block 702 is fixedly connected to one side of the adjusting plate 701. The first connecting block 702 is threadedly connected to a screw 705. Motors 704 are fixedly connected to both sides of the electric hoist 2. The screw 705 is fixedly connected to the output end of the motor 704. A second connecting block 703 is symmetrically fixed to the other side of the adjusting plate 701. A second sliding groove 203 is symmetrically provided on both sides inside the electric hoist 2. The second connecting block 703 is slidably adapted to the second sliding groove 203.

[0028] like Figure 6 , 7 As shown, in order to install the upper buffer assembly 7, the electric hoist 2 is symmetrically provided with mounting grooves 201, the mounting grooves 201 penetrate through the lower end of the electric hoist 2, the buffer block 403 slides into the mounting groove 201, the upper buffer assembly 7 is connected to the mounting groove 201, the adjusting plate 701 and the pressure plate 707 are both slidably connected to the mounting groove 201, a first sliding groove 202 is provided on one side of the mounting groove 201, the first connecting block 702 is slidably adapted to the first sliding groove 202, a sliding rod is fixedly connected in the second sliding groove 203, and the second connecting block 703 is slidably connected to the sliding rod.

[0029] like Figure 3As shown, a connecting assembly 6 is provided to stably connect the hook 5. The connecting assembly 6 includes a fixing plate 601, a bolt 605, and a nut 603. The fixing plate 601 is symmetrically fixed to the lower end of the buffer plate 401. The hook 5 is located between the mutually symmetrical fixing plates 601. Washers 606 are provided on both sides of the hook 5. The bolt 605 moves through the fixing plate 601, the washers 606, and the hook 5. The nut 603 is symmetrically located at both ends of the bolt 605. The nut 603 is threadedly connected to the bolt 605. A connecting ring 604 is fixedly connected to one side of the nut 603. A threaded annular groove 602 is provided on one side of the fixing plate 601. The connecting ring 604 is threadedly connected to the threaded groove.

[0030] When the hook 5 rises during use, if it fails to stop due to improper operation, the buffer block 403 extends into the mounting groove 201, and the buffer pad 404 presses against the pressure plate 707, thereby causing the pressure plate 707 to press against the buffer component 706 for buffering. At the same time, the limiting rod 405 slides into the through hole 407 of the buffer block 403, and the connecting plate 406 at the lower end of the buffer block 403 presses against the spring 408 for buffering. This allows the upper buffer component 706 and the lower buffer component 706 to cooperate to buffer and prevent the hook 5 from impacting. Meanwhile, the output end of the motor 704 can drive the screw 705 to rotate, which in turn drives the adjusting plate 701 to slide in the mounting groove 201 through the first connecting block 702, thereby adjusting the position of the upper buffer component 7 in the mounting groove 201 and adjusting the buffer load. At the same time, the second connecting block 703 slides on the slide rod in the second slide groove 203 to limit the movement of the upper buffer component 7, improving the stability of the movement of the upper buffer component 7.

[0031] In summary, in this embodiment of the utility model, the upper buffer component 7 and the lower buffer component 4 work together to buffer the hook 5, thereby effectively preventing the hook 5 from hitting the top. The upper buffer component 7 can be adjusted according to actual needs to bear the buffer force range. The connection component 6 connects the hook 5, which can effectively improve the stability of the hook 5 connection.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for preventing a crane from hitting the top, comprising a main beam and an electric hoist, the electric hoist being connected to the lower end of the main beam, characterized in that: The electric hoist is internally provided with a connecting shaft, a steel wire rope is wound on the connecting shaft, the two ends of the steel wire rope are movably extended from the lower end of the electric hoist, a buffer plate is fixedly connected to the lower end of the steel wire rope, a hook is connected to the lower end of the buffer plate, and a buffer mechanism is connected to the electric hoist and the buffer plate.

2. The anti-collision device for hoisting equipment according to claim 1, characterized in that: The buffer mechanism comprises a lower buffer assembly which is symmetrically fixed to the upper end of the buffer plate, the lower buffer assembly comprises a mounting shell, a buffer block and a spring, the mounting shell is fixed to the upper end of the buffer plate, the lower end of the buffer block is fixedly connected to a connecting plate, the connecting plate is slidably fitted in the mounting shell, the upper end of the buffer block is slidably extended from the mounting shell, a plurality of limiting rods are fixedly arranged in the mounting shell, a plurality of springs are sleeved on the limiting rods, the upper end of the spring abuts against the connecting plate, a plurality of through holes are arranged on the buffer block, and the limiting rods are slidably fitted in the through holes.

3. The anti-collision device for hoisting equipment according to claim 2, characterized in that: The upper end of the buffer block is fixedly connected to a buffer pad which is made of rubber.

4. The anti-collision device for hoisting equipment according to claim 2, characterized in that: The buffer mechanism further comprises an upper buffer assembly which is symmetrically connected to the electric hoist, the upper buffer assembly comprises an adjusting plate, a buffer piece and a pressure bearing plate, the adjusting plate is slidably connected to the electric hoist, a plurality of buffer pieces are fixedly connected to the lower end of the adjusting plate, the pressure bearing plate is fixedly connected to the lower end of the buffer piece, a first connecting block is fixedly connected to one side of the adjusting plate, a screw rod is threadedly connected to the first connecting block, an electric motor is fixedly connected to the two sides of the electric hoist, the screw rod is fixedly connected to the output end of the electric motor, a second connecting block is symmetrically fixed to the other side of the adjusting plate, and a second sliding groove is symmetrically arranged on the two sides of the electric hoist.

5. The anti-striking device of claim 4, wherein: The electric hoist is internally provided with a connecting shaft, a steel wire rope is wound on the connecting shaft, the two ends of the steel wire rope are movably extended from the lower end of the electric hoist, a buffer plate is fixedly connected to the lower end of the steel wire rope, a hook is connected to the lower end of the buffer plate, and a buffer mechanism is connected to the electric hoist and the buffer plate.

6. A ceiling protection device for a hoisting apparatus according to any one of claims 1-5, characterized in that The buffer mechanism further comprises an upper buffer assembly which is symmetrically connected to the electric hoist, the upper buffer assembly comprises an adjusting plate, a buffer piece and a pressure bearing plate, the adjusting plate is slidably connected to the electric hoist, a plurality of buffer pieces are fixedly connected to the lower end of the adjusting plate, the pressure bearing plate is fixedly connected to the lower end of the buffer piece, a first connecting block is fixedly connected to one side of the adjusting plate, a screw rod is threadedly connected to the first connecting block, an electric motor is fixedly connected to the two sides of the electric hoist, the screw rod is fixedly connected to the output end of the electric motor, a second connecting block is symmetrically fixed to the other side of the adjusting plate, and a second sliding groove is symmetrically arranged on the two sides of the electric hoist. The electric hoist is internally provided with a connecting shaft, a steel wire rope is wound on the connecting shaft, the two ends of the steel wire rope are movably extended from the lower end of the electric hoist, a buffer plate is fixedly connected to the lower end of the steel wire rope, a hook is connected to the lower end of the buffer plate, and a buffer mechanism is connected to the electric hoist and the buffer plate. The buffer mechanism further comprises an upper buffer assembly which is symmetrically connected to the electric hoist, the upper buffer assembly comprises an adjusting plate, a buffer piece and a pressure bearing plate, the adjusting plate is slidably connected to the electric hoist, a plurality of buffer pieces are fixedly connected to the lower end of the adjusting plate, the pressure bearing plate is fixedly connected to the lower end of the buffer piece, a first connecting block is fixedly connected to one side of the adjusting plate, a screw rod is threadedly connected to the first connecting block, an electric motor is fixedly connected to the two sides of the electric hoist, the screw rod is fixedly connected to the output end of the electric motor, a second connecting block is symmetrically fixed to the other side of the adjusting plate, and a second sliding groove is symmetrically arranged on the two sides of the electric hoist.

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