Electric hoist with forced braking function

Abstract

The utility model discloses an electric hoist with a forced braking function, and relates to the technical field of electric hoists. The electric hoist comprises an electric hoist body, the electric hoist body comprises a winding assembly and a driving mechanism, a brake assembly comprises a fixing disc, the fixing disc is fixedly connected with the winding assembly, a fixing plate is fixedly arranged at the top end of the electric hoist body, a wedge-shaped block is installed on the inner side of the fixing disc, and four connecting blocks are installed on the outer side of the wedge-shaped block in a sliding mode. Mounting blocks are fixedly arranged on the outer sides of the connecting blocks, friction blocks are fixedly arranged at the ends, away from the connecting blocks, of the mounting blocks, and the four friction blocks are attached to the inner wall of the fixing disc. According to the lifting device, the fixed disc, the wedge-shaped block, the mounting block, the friction block, the electric cylinder and other structures are arranged and matched with one another, the fixed disc can be forcibly braked through the friction block, the winding assembly can be braked, and then the lifting action can be rapidly and effectively stopped, so that heavy objects are prevented from falling, and the safety of operators and the surrounding environment is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric hoist technical field, concretely is a kind of electric hoist with forced braking function. BACKGROUND

[0002] Electric hoist is a kind of hoisting equipment driven by motor, mainly used for lifting and moving heavy objects. It realizes the lifting of objects through components such as drum, wire rope or chain, and is widely used in warehousing, construction, manufacturing and maintenance fields. Electric hoist is usually equipped with control system to facilitate the operator to carry out hoisting operation conveniently and safely, has high efficiency and safety, and is one of indispensable equipment in modern industry.

[0003] However, the existing electric hoist may cause the heavy object to fall freely in case of accident, causing serious safety accidents and injury risks, especially when handling heavy loads, lack of reliable braking mechanism may cause the object to lose control, threatening the life safety of operator and damage to other personnel or equipment. To solve the above problems, the inventor proposes an electric hoist with forced braking function to solve the above problems. SUMMARY

[0004] In order to solve the problem that electric hoist may cause heavy object to fall freely in case of accident, increase safety hazard and threaten the safety of operator and surrounding personnel; the purpose of the utility model is to provide an electric hoist with forced braking function.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: an electric hoist with forced braking function, comprising an electric hoist body, the electric hoist body comprising a winding assembly and a driving mechanism, a brake assembly is installed outside the electric hoist body, the brake assembly comprises a fixed disc, the fixed disc is fixedly connected with the winding assembly, a fixed plate is fixedly arranged at the top end of the electric hoist body, a wedge-shaped block is installed inside the fixed disc, four connecting blocks are slidingly installed outside the wedge-shaped block, an installation block is fixedly arranged outside the connecting block, a friction block is fixedly arranged at the end of the installation block away from the connecting block, four friction blocks are in contact with the inner wall of the fixed disc, a No. 1 electric cylinder is installed outside the fixed plate, the output end of the No. 1 electric cylinder is inserted into the fixed plate and fixedly connected with the wedge-shaped block, T-shaped slides are formed around the outer side of the wedge-shaped block, the connecting blocks are movably inserted into the T-shaped slides, guide rods symmetrically distributed are fixedly arranged outside the four connecting blocks, and the guide rods are movably inserted into the fixed plate.

[0006] Preferably, the fixed disc is fixed with fixed rods arranged in an annular array outside, the electric hoist body is fixed with a No.2 electric cylinder at the bottom end, the output end of the No.2 electric cylinder is inserted through the electric hoist body and is fixed with a lifting plate, the top end of the lifting plate is fixed with a stop block, and the bottom end of the lifting plate is fixed with auxiliary rods arranged in a symmetrical manner, and the auxiliary rods are inserted through the electric hoist body.

[0007] Preferably, the winding assembly is wound with a steel wire rope outside, the bottom end of the steel wire rope is provided with a pulley, the bottom end of the pulley is detachably provided with a hook, and the bottom end of the electric hoist body is provided with a guide groove, and the steel wire rope is inserted into the guide groove.

[0008] Preferably, the mounting block is detachably mounted outside the connecting block, the fixed plate is provided with limiting grooves arranged in an annular array inside, the guide rods are movably inserted into the limiting grooves, and the guide rods are fixed with two limiting blocks outside, and the two limiting blocks are located on the two sides of the limiting grooves, respectively.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] 1、The utility model discloses a fixed disc, a wedge-shaped block, a mounting block, a friction block and an electric cylinder are cooperated with each other, the fixed disc can be forcibly braked through the friction block, the winding assembly can be braked, and then the lifting action can be stopped quickly and effectively, so that the safety of the operator and the surrounding environment can be protected when heavy objects fall.

[0011] 2、The utility model discloses an electric cylinder, a fixed rod, a lifting plate and a stop block are cooperated with each other in the electric hoist, and a mechanical locking structure is added, when reaching the preset height or in the power-off condition, the hoisting weight is automatically locked, and when the accident occurs, the goods can be prevented from falling accidentally. DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without the creative labor for those skilled in the art.

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 It is the whole structure side surface schematic diagram of the utility model;

[0015] Figure 3 It is the electric hoist body and the connecting structure section schematic diagram of the utility model;

[0016] Figure 4 For the utility model Figure 3 Amplification structure schematic view of A place in the middle;

[0017] Figure 5 For the utility model fixed disc and its connecting structure section schematic view;

[0018] Figure 6 For the utility model wedge block and its connecting structure schematic view.

[0019] In the drawing: 1, electric hoist body;11, winding assembly;12, drive mechanism;13, steel wire rope;14, pulley;15, hook;16, guide slot;17, guide rod;18, limit slot;19, limit block;2, brake assembly;21, fixed disc;22, fixed plate;23, wedge block;24, connecting block;25, mounting block;26, friction block;27, T-shaped slide;28, No. 1 electric cylinder;3, fixed rod;31, No. 2 electric cylinder;32, lifting plate;33, stop block;34, auxiliary rod. Specific embodiments

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment: as Figures 1-6The utility model provides a kind of electric hoist with forced braking function, including electric hoist body 1, electric hoist body 1 includes winding assembly 11 and drive mechanism 12, drive mechanism 12 is connected with the crossbeam outside, drive mechanism 12 is constituted by frame, wheel group, guide rail and driving source, can drive wheel group rotation by driving source, then by wheel group and guide rail can make electric hoist body 1 can move laterally on crossbeam, winding mechanism 11 can be wound to steel wire rope 13, so it can be lifted to goods, brake assembly 2 is installed on the outside of electric hoist body 1, brake assembly 2 can be forced to brake to the goods that is lifted, brake assembly 2 includes fixed disc 21, fixed disc 21 is fixedly connected with winding assembly 11, electric hoist body 1 top is fixedly provided with fixed plate 22, fixed plate 22 plays the purpose of supporting fixed disc 21 inside is installed with wedge block 23, four connecting blocks 24 are slidably installed on the outside of wedge block 23, connecting block 24 outside is fixedly provided with mounting block 25, mounting block 25 is fixedly provided with friction block 26 away from one end of connecting block 24, four friction blocks 26 are attached to the inner wall of fixed disc 21, a No. electric cylinder 28 is installed on the outside of fixed plate 22, the output end of No. electric cylinder 28 is inserted through in fixed plate 22 and is fixedly connected with wedge block 23, T-shaped slide 27 is formed on the outside of wedge block 23, connecting block 24 is movably inserted in T-shaped slide 27, four connecting blocks 24 outside are fixedly provided with symmetrically distributed guide rod 17, guide rod 17 is movably inserted in fixed plate 22, and guide rod 17 can guide connecting block 24.

[0022] Fixed rod 3 is fixedly provided on the outside of fixed disc 21 in annular array distribution, the end of fixed rod 3 is provided with chamfer, and the top of stop block 33 is provided with chamfer, when stop block 33 contacts with fixed rod 3, it can drive fixed disc 21 to rotate slightly, so that stop block 33 is placed between two fixed rods 3, thereby completing limiting, No. electric cylinder 31 is fixedly provided at the bottom of electric hoist body 1, the output end of No. electric cylinder 31 is inserted through in electric hoist body 1 and is fixedly provided with lifting plate 32, lifting plate 32 top is fixedly provided with stop block 33, lifting plate 32 bottom is fixedly provided with symmetrically distributed auxiliary rod 34, auxiliary rod 34 is inserted through in electric hoist body 1.

[0023] By adopting the above technical scheme, the fixed rod 3 is blocked by the stop block 33, and the lifting weight is automatically locked when reaching the preset height or in the case of power failure, which can prevent the goods from falling accidentally in case of accident.

[0024] Steel wire rope 13 is wound on the outside of winding assembly 11, and pulley 14 is installed at the bottom end of steel wire rope 13.

[0025] By adopting the above technical scheme, the steel wire rope 13 can mobilize the pulley 14 to lift, and the pulley 14 can reduce friction.

[0026] The hook 15 is detachably mounted at the bottom end of the pulley 14.

[0027] By adopting the above technical scheme, the hook 15 can ensure the safe hanging of the heavy object.

[0028] The guiding groove 16 is formed in the inner bottom end of the electric hoist body 1, and the steel wire rope 13 is inserted into the guiding groove 16.

[0029] By adopting the above technical scheme, the steel wire rope 13 can move in the guiding groove 16.

[0030] The mounting block 25 is detachably mounted on the outer side of the connecting block 24.

[0031] By adopting the above technical scheme, the mounting block 25 can be detached, so that the friction block 26 can be replaced, maintained, etc.

[0032] The limiting grooves 18 are annularly arranged in the fixed plate 22, and the guiding rod 17 is movably inserted into the limiting grooves 18.

[0033] By adopting the above technical scheme, the guiding rod 17 can slide in the limiting grooves 18.

[0034] The two limiting blocks 19 are fixedly arranged on the outer side of the guiding rod 17, and the two limiting blocks 19 are respectively located on the two sides of the limiting grooves 18.

[0035] By adopting the above technical scheme, the limiting blocks 19 can limit the guiding rod 17.

[0036] Working principle: when the electric hoist body 1 is lifting the goods, when braking is needed, first start the No. 1 electric cylinder 28, so that the No. 1 electric cylinder 28 starts to work, the output end of the No. 1 electric cylinder 28 drives the wedge-shaped block 23 to move, the wedge-shaped block 23 moves through the T-shaped slide 27 to make the four connecting blocks 24 move outward under the assistance of the guiding rod 17, the connecting block 24 drives the mounting block 25 to move, the mounting block 25 drives the friction block 26 to move, the friction block 26 moves and is attached to the inner wall of the fixed disc 21, so as to forcibly brake the fixed disc 21, the fixed disc 21 is forcibly braked to brake the winding assembly 11, so as to quickly and effectively stop the lifting action, thereby preventing the heavy object from falling, protecting the safety of the operator and the surrounding environment.

[0037] When the hoisted goods reach the predetermined height, the No. 2 electric cylinder 31 is started at this time, so that the No. 2 electric cylinder 31 starts to work, the output end of the No. 2 electric cylinder 31 drives the lifting plate 32 to move upward under the assistance of the auxiliary rod 34, the lifting plate 32 drives the stop block 33 to move upward, so that the stop block 33 moves to the side of the fixed rod 3, the fixed rod 3 can be blocked by the stop block 33, when reaching the preset height or in the case of power failure, the hoisted weight is automatically locked, which can prevent the goods from falling accidentally in the case of accident.

[0038] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An electric hoist having a forced braking function, comprising an electric hoist body (1), characterized in that: The electric hoist body (1) includes a winding assembly (11) and a driving mechanism (12), a brake assembly (2) is installed outside the electric hoist body (1), the brake assembly (2) includes a fixed disc (21), the fixed disc (21) is fixedly connected with the winding assembly (11), a fixed plate (22) is fixedly arranged at the top end of the electric hoist body (1), a wedge-shaped block (23) is installed inside the fixed disc (21), four connecting blocks (24) are slidably arranged outside the wedge-shaped block (23), an installation block (25) is fixedly arranged outside the connecting block (24), a friction block (26) is fixedly arranged at the end of the installation block (25) away from the connecting block (24), four friction blocks (26) are attached to the inner wall of the fixed disc (21), a first electric cylinder (28) is installed outside the fixed plate (22), the output end of the first electric cylinder (28) is inserted into the fixed plate (22) and is fixedly connected with the wedge-shaped block (23), T-shaped sliding grooves (27) are formed around the outer side of the wedge-shaped block (23), the connecting blocks (24) are movably inserted into the T-shaped sliding grooves (27), and guide rods (17) are symmetrically arranged outside the four connecting blocks (24) and movably inserted into the fixed plate (22).

2. The electric hoist with the forced braking function according to claim 1, characterized in that: The fixed disc (21) is fixedly provided with fixed rods (3) arranged in an annular array, the bottom end of the electric hoist body (1) is fixedly provided with a second electric cylinder (31), the output end of the second electric cylinder (31) is inserted into the electric hoist body (1) and is fixedly provided with a lifting plate (32), the top end of the lifting plate (32) is fixedly provided with a stop block (33), the bottom end of the lifting plate (32) is fixedly provided with auxiliary rods (34) arranged in a symmetrical manner, and the auxiliary rods (34) are inserted into the electric hoist body (1).

3. The electric hoist with the forced braking function according to claim 1, characterized in that: The winding assembly (11) is wound with a steel wire rope (13), and the bottom end of the steel wire rope (13) is provided with a pulley (14).

4. An electric hoist with a forced braking function as claimed in claim 3, characterized in that: The bottom end of the pulley (14) is detachably provided with a hook (15).

5. A motorised cable hoist with forced braking function as claimed in claim 4, characterised in that: The bottom end of the electric hoist body (1) is provided with a guide groove (16), and the steel wire rope (13) is inserted into the guide groove (16).

6. The electric hoist with forced braking function according to claim 1, characterized in that: The installation block (25) is detachably installed outside the connecting block (24).

7. The electric hoist with forced braking function according to claim 1, characterized in that: The fixed plate (22) is provided with limiting grooves (18) arranged in an annular array, and the guide rods (17) are movably inserted into the limiting grooves (18).

8. A motorised cable hoist with forced braking function as claimed in claim 7, characterised in that: Two limiting blocks (19) are fixedly arranged outside the guide rods (17), and the two limiting blocks (19) are respectively located on the two sides of the limiting grooves (18).

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