Protective device for lifting machine

Abstract

The utility model discloses a protection device for a lifting machine, which belongs to the technical field of lifting machines and comprises a lifting machine assembly, a supporting mechanism is arranged at the bottom of the lifting machine assembly, a winding assembly is connected to the top of the lifting machine assembly, a lifting rope is connected to the outer wall of the winding assembly in a winding mode, and one end of the lifting rope is connected with a lifting hook assembly. Anti-falling mechanisms are arranged on the two sides of the hoister assembly; according to the anti-falling device, the anti-falling mechanism is arranged, the rotating block rapidly rotates to drive the stopping block to move, so that the stopping block moves to be attached to the inner wall of the fixing ring, at the moment, the limiting block moves forwards through the elastic force of the limiting spring, the stopping block is clamped, and then the stopping block can be matched with the fixing ring to stop the rotating block from rotating; and the safety rope can pull the lifting hook assembly, so that a heavy object is prevented from hitting the ground to damage the heavy object or injuring an operator, and the safety of the machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoists, and in particular relates to a protective device for a lifting hoist. Background Art

[0002] An elevator is a mechanical device used to transport materials vertically or nearly vertically. It can lift materials from a low place to a high place. It is commonly used in mining, cement, chemical, grain and other industries. The working principle of the elevator is to drive the transmission mechanism, such as a belt, chain or wire rope, through a motor or other prime mover to achieve the lifting and transportation of materials.

[0003] The existing hoist support base area is small. When the hoist lifts heavy objects, the heavy objects may overturn the hoist, thereby causing damage to the machine. In addition, the existing hoist is not equipped with an anti-fall device. Therefore, during use, when the wire rope breaks, the lifted heavy object will fall from a height, which will not only cause damage to the heavy object itself, but also may injure the operator, affecting the operator's life safety. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that heavy objects easily injure operators and the base of the hoist is unstable when falling, and to propose a protective device for a lifting hoist.

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

[0006] A protective device for a lifting hoist comprises a hoist assembly, wherein a supporting mechanism is arranged at the bottom of the hoist assembly, a winding assembly is connected to the top of the hoist assembly, a lifting rope is wound around the outer wall of the winding assembly, a hook assembly is connected to one end of the lifting rope, and anti-fall mechanisms are arranged on both sides of the hoist assembly.

[0007] As a further description of the above technical solution:

[0008] The anti-fall mechanism includes a rotating block and a fixed ring, and one side of the fixed ring is connected to one side of the hoist assembly, the outer wall of the rotating block is provided with two first sliding grooves, the inner wall of the first sliding groove is connected to two telescopic springs, and the other ends of the two telescopic springs are connected to the same blocking block, the outer wall of the blocking block is slidably connected to the inner wall of the first sliding groove, sliding grooves are provided on both sides of the inner wall of the first sliding groove, the inner wall of the sliding groove is slidably connected to a limiting block, one side of the limiting block is connected to a limiting spring, and the other end of the limiting spring is connected to the inner wall of the sliding groove.

[0009] As a further description of the above technical solution:

[0010] One side of the limit block is connected to a connecting plate, one side of the rotating block is provided with a plurality of second sliding grooves, and one side of the second sliding groove is connected to one side of the sliding groove, the outer wall of the connecting plate is slidably connected to the inner wall of the second sliding groove, and one side of the connecting plate extends outside the second sliding groove, one side of the rotating block is connected to a connecting block, the outer wall of the connecting block is connected to a coil spring, second placement grooves are provided on both sides of the elevator assembly, the inner wall of the second placement groove is connected to one end of the coil spring, and one side of the connecting block is rotatably connected to the inner wall of the second placement groove.

[0011] As a further description of the above technical solution:

[0012] One side of the rotating block is connected to a drum, an outer wall of the drum is wound with a safety rope, and one end of the safety rope is connected to one side of the hook assembly.

[0013] As a further description of the above technical solution:

[0014] The supporting mechanism includes a base, and the top of the base is connected to the bottom of the lifting machine assembly. A movable groove is opened on one side of the base, and the cross-section of the movable groove is U-shaped. A telescopic plate is slidably connected to the inner wall of the movable groove. Two pulley assemblies are connected to the bottom of the telescopic plate. The outer wall of the pulley assembly is slidably connected to the inner wall of the movable groove. A threaded groove is opened on one side of the telescopic plate. A threaded rod is threadedly connected to the inner wall of the threaded groove. A first placement groove is opened on one side of the movable groove, and one end of the threaded rod is rotatably connected to the inner wall of the first placement groove.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the threaded rod is connected to a second bevel gear, one side of the second bevel gear is meshed with a first bevel gear, one side of the first bevel gear is connected to a connecting rod, and one end of the connecting rod extends outside the base and is connected to a round block, the outer wall of the round block is connected to a connecting handle, and the inner wall of the connecting handle is rotatably connected to a grip rod.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. In the utility model, an anti-fall mechanism is provided, and the blocking block is driven to move by the rapid rotation of the rotating block, so that the blocking block moves to fit with the inner wall of the fixed ring. At this time, the limit block moves forward by the elastic force of the limiting spring, thereby jamming the blocking block, and then the blocking block can cooperate with the fixed ring to prevent the rotating block from rotating, so that the safety rope can pull the hook assembly, avoiding heavy objects from falling to the ground and being damaged, or injuring the operator, thereby improving the safety of the machine.

[0019] 2. In the utility model, a supporting mechanism is provided, and the connecting handle and the round block are driven to rotate through the handle, so that the round block drives the first bevel gear and the second bevel gear to rotate through the connecting rod, and then drives the threaded rod to rotate. The rotation of the threaded rod drives the telescopic plate and the pulley assembly to move forward, thereby increasing the supporting area of ​​the base, making the hoist more stable, avoiding tipping during the lifting process, and improving the stability of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the anti-falling mechanism of the utility model;

[0022] Figure 3 For this utility model Figure 2 The enlarged structural diagram of part A in the middle;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating block of the utility model;

[0024] Figure 5 For this utility model Figure 4 The enlarged structural diagram of part B in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the hoist assembly of the utility model;

[0026] Figure 7 For this utility model Figure 6 The enlarged structural diagram of the middle C part;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the support mechanism of the utility model;

[0028] Fig. 9 For this utility model Figure 8 The enlarged structural diagram of the middle D part;

[0029] Fig.10 For this utility model Figure 8 The enlarged structural diagram of part E in the middle;

[0030] Fig.11 This is a schematic diagram of the structure of the movable slot of the utility model.

[0031] Legend: 1. Hoist assembly; 2. Winding assembly; 3. Hook assembly; 4. Anti-fall mechanism; 401. Rotating block; 402. Fixed ring; 403. Reel; 404. Safety rope; 405. Blocking block; 406. Telescopic spring; 407. First slide groove; 408. Limiting block; 409. Connecting plate; 410. Limiting spring; 411. Sliding groove; 412. Coil spring; 413. Connecting block; 414. Second slide groove; 5. Support mechanism; 501. Pulley assembly; 502. Telescopic plate; 503. Threaded groove; 504. Grip rod; 505. Round block; 506. Connecting handle; 507. Connecting rod; 508. First bevel gear; 509. Threaded rod; 510. Second bevel gear; 511. Moving groove; 512. Base; 513. First placement groove; 6. Lifting rope; 7. Second placement groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-11The utility model provides a technical solution: a lifting hoist protective device, including a hoist assembly 1, a supporting mechanism 5 is arranged at the bottom of the hoist assembly 1, a winding assembly 2 is connected to the top of the hoist assembly 1, a lifting rope 6 is wound around the outer wall of the winding assembly 2, and a hook assembly 3 is connected to one end of the lifting rope 6, and an anti-fall mechanism 4 is arranged on both sides of the hoist assembly 1, and the anti-fall mechanism 4 includes a rotating block 401 and a fixed ring 402, and one side of the fixed ring 402 is connected to one side of the hoist assembly 1, and two first sliding grooves 407 are arranged on the outer wall of the rotating block 401, and two telescopic springs 406 are connected to the inner wall of the first sliding groove 407, and the other ends of the two telescopic springs 406 are connected to the same blocking block 405, and the outer wall of the blocking block 405 is slidably connected to the inner wall of the first sliding groove 407, and sliding grooves 411 are arranged on both sides of the inner wall of the first sliding groove 407, and the inner wall of the sliding groove 411 is slidably connected to the limiting block 408, A limiting spring 410 is connected to one side of the limit block 408, and the other end of the limiting spring 410 is connected to the inner wall of the sliding groove 411, a connecting plate 409 is connected to one side of the limit block 408, a plurality of second sliding grooves 414 are provided on one side of the rotating block 401, and one side of the second sliding groove 414 is connected to one side of the sliding groove 411, the outer wall of the connecting plate 409 is slidably connected to the inner wall of the second sliding groove 414, and one side of the connecting plate 409 extends to the outside of the second sliding groove 414, a connecting block 413 is connected to one side of the rotating block 401, and a coil spring 412 is connected to the outer wall of the connecting block 413, second placement grooves 7 are provided on both sides of the hoist assembly 1, the inner wall of the second placement groove 7 is connected to one end of the coil spring 412, and one side of the connecting block 413 is rotatably connected to the inner wall of the second placement groove 7, a drum 403 is connected to one side of the rotating block 401, and a safety rope 404 is wound around the outer wall of the drum 403, and one end of the safety rope 404 is connected to one side of the hook assembly 3.

[0034] The specific implementation method is as follows: the blocking block 405 is caused to rotate rapidly by rotating the rotating block 401. Since the blocking block 405 rotates very fast, when the centrifugal force generated by the rotation of the blocking block 405 is greater than the elastic force of the telescopic spring 406, the blocking block 405 will move out of the groove through the first sliding groove 407. When the blocking block 405 moves to fit the inner wall of the fixing ring 402, since the contact portion between the blocking block 405 and the fixing ring 402 is set to a ratchet shape, the fixing ring 402 will jam the blocking block 405. At this time, the limit block 408 moves out of the sliding groove 411 due to the elastic force of the limiting spring 410, thereby being able to jam the blocking block 405, so that the blocking block 405 will not be restored to its original position due to the elastic force of the telescopic spring 406, and then the blocking block 405 can cooperate with the fixing ring 402 to prevent the rotating block 401 from rotating, so that the safety rope 404 can pull the hook assembly 3, avoiding the heavy object from falling to the ground and being damaged, or injuring the operator, thereby improving the safety of the machine.

[0035] The supporting mechanism 5 includes a base 512, and the top of the base 512 is connected to the bottom of the hoist assembly 1. A movable groove 511 is provided on one side of the base 512, and the cross section of the movable groove 511 is U-shaped. A telescopic plate 502 is slidably connected to the inner wall of the movable groove 511. Two pulley assemblies 501 are connected to the bottom of the telescopic plate 502. The outer wall of the pulley assembly 501 is slidably connected to the inner wall of the movable groove 511. A threaded groove 503 is provided on one side of the telescopic plate 502. A threaded rod 509 is threadedly connected to the inner wall of the threaded groove 503. A first placement groove 513 is opened on one side of the groove 511, one end of the threaded rod 509 is rotatably connected to the inner wall of the first placement groove 513, the outer wall of the threaded rod 509 is connected to the second bevel gear 510, one side of the second bevel gear 510 is meshed with the first bevel gear 508, one side of the first bevel gear 508 is connected to a connecting rod 507, and one end of the connecting rod 507 extends to the outside of the base 512 and is connected to a round block 505, the outer wall of the round block 505 is connected to a connecting handle 506, and the inner wall of the connecting handle 506 is rotatably connected to the gripping rod 504.

[0036] The specific implementation method is: the handle 504 drives the connecting handle 506 to rotate, the rotation of the connecting handle 506 drives the round block 505 to rotate, the rotation of the round block 505 drives the connecting rod 507 to rotate, the rotation of the connecting rod 507 drives the first bevel gear 508 to rotate, the first bevel gear 508 drives the second bevel gear 510 to rotate by engaging with the second bevel gear 510, the rotation of the second bevel gear 510 drives the threaded rod 509 to rotate, the threaded rod 509 drives the telescopic plate 502 and the pulley assembly 501 to move out of the movable groove 511 by rotating in the threaded groove 503, thereby increasing the support area of ​​the base 512, thereby making the lifting machine more stable, avoiding tipping during the lifting process, and improving the stability of the machine.

[0037] Working principle: When in use, first use the handle 504 to rotate the connecting handle 506 and drive the round block 505 to rotate. The rotation of the round block 505 causes the connecting rod 507 to rotate and the first bevel gear 508 to rotate. The first bevel gear 508 and the second bevel gear 510 are meshed to cause the second bevel gear 510 to rotate. The rotation of the second bevel gear 510 drives the threaded rod 509 to rotate in the thread groove 503, thereby driving the telescopic plate 502 and the pulley assembly 501 to move out of the moving groove 511, thereby increasing the supporting area of ​​the base 512, making the hoist more stable. When the hook assembly 3 falls rapidly due to the breakage of the lifting rope 6, the safety rope 404 will drive the drum 4 03 rotates rapidly, thereby driving the rotating block 401 to rotate rapidly. The rapid rotation of the rotating block 401 drives the internal blocking block 405 to rotate rapidly. When the centrifugal force generated by the rotation of the blocking block 405 is greater than the elastic force of the telescopic spring 406, the blocking block 405 slides outward from the first slide groove 407 under the action of the centrifugal force, and then contacts the part of the inner wall of the fixed ring 402 where the ratchet is provided. Since the blocking block 405 is also provided with ratchet, it will be restricted by the fixed ring 402, and the rotating block 401 and the reel 403 will stop rotating, so that the safety rope 404 can pull the hook assembly 3, so that the weight will no longer continue to fall, thereby protecting the weight and the operator.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hoisting machine protection device, comprising a hoist assembly (1), characterized in that: A support mechanism (5) is provided at the bottom of the hoist assembly (1); a winding assembly (2) is connected to the top of the hoist assembly (1); a suspension rope (6) is wound around the outer wall of the winding assembly (2); one end of the suspension rope (6) is connected to a hook assembly (3); and anti-fall mechanisms (4) are provided on both sides of the hoist assembly (1).

2. A hoisting machine protection device according to claim 1, characterized in that: The anti-fall mechanism (4) comprises a rotating block (401) and a fixed ring (402), and one side of the fixed ring (402) is connected to one side of the hoist assembly (1); the outer wall of the rotating block (401) is provided with two first sliding grooves (407); the inner wall of the first sliding groove (407) is connected to two telescopic springs (406); and the other ends of the two telescopic springs (406) are connected to the same blocking block (405); the outer wall of the blocking block (405) is slidably connected to the inner wall of the first sliding groove (407); sliding grooves (411) are provided on both sides of the inner wall of the first sliding groove (407); the inner wall of the sliding groove (411) is slidably connected to a limiting block (408); one side of the limiting block (408) is connected to a limiting spring (410), and the other end of the limiting spring (410) is connected to the inner wall of the sliding groove (411).

3. A hoisting machine protection device according to claim 2, characterized in that: One side of the limit block (408) is connected to a connecting plate (409), one side of the rotating block (401) is provided with a plurality of second slide grooves (414), and one side of the second slide groove (414) is connected to one side of the sliding groove (411), the outer wall of the connecting plate (409) is slidably connected to the inner wall of the second slide groove (414), and one side of the connecting plate (409) extends outside the second slide groove (414), one side of the rotating block (401) is connected to a connecting block (413), the outer wall of the connecting block (413) is connected to a coil spring (412), both sides of the elevator assembly (1) are provided with second placement grooves (7), the inner wall of the second placement groove (7) is connected to one end of the coil spring (412), and one side of the connecting block (413) is rotatably connected to the inner wall of the second placement groove (7).

4. A hoisting machine protection device according to claim 2, characterized in that: One side of the rotating block (401) is connected to a reel (403), an outer wall of the reel (403) is wound with a safety rope (404), and one end of the safety rope (404) is connected to one side of the hook assembly (3).

5. A hoisting machine protection device according to claim 1, characterized in that: The support mechanism (5) comprises a base (512), and the top of the base (512) is connected to the bottom of the hoist assembly (1); a movable groove (511) is provided on one side of the base (512), and the cross section of the movable groove (511) is U-shaped; a telescopic plate (502) is slidably connected to the inner wall of the movable groove (511); two pulley assemblies (501) are connected to the bottom of the telescopic plate (502); the outer wall of the pulley assembly (501) is slidably connected to the inner wall of the movable groove (511); a threaded groove (503) is provided on one side of the telescopic plate (502); a threaded rod (509) is threadedly connected to the inner wall of the threaded groove (503); a first placement groove (513) is provided on one side of the movable groove (511); one end of the threaded rod (509) is rotatably connected to the inner wall of the first placement groove (513).

6. A hoisting machine protection device according to claim 5, characterized in that: The outer wall of the threaded rod (509) is connected to a second bevel gear (510), one side of the second bevel gear (510) is meshed with a first bevel gear (508), one side of the first bevel gear (508) is connected to a connecting rod (507), and one end of the connecting rod (507) extends outside the base (512) and is connected to a round block (505), the outer wall of the round block (505) is connected to a connecting handle (506), and the inner wall of the connecting handle (506) is rotatably connected to a grip rod (504).

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