Lifting chain lifting device

Abstract

The utility model discloses a sling chain lifting device, which relates to the technical field of hoisting, and comprises a hoisting plate and a protection component, an electric rotating table is mounted at the upper end of the hoisting plate, and the protection component for preventing a sling chain from being out of control and falling at top speed is arranged on the outer side of the electric rotating table. And the protection assembly comprises a protection frame, a clamping plate, a friction plate, an electric push rod and a displacement limiting groove, the clamping plate is arranged in the protection frame, the friction plate is installed on the inner side surface of the clamping plate, the electric push rod is installed on the outer side surface of the clamping plate, and the displacement limiting groove is formed in the inner wall of the protection frame. And a connecting table is arranged at the upper end of the electric rotating table. According to the sling chain lifting device, a chain is installed in the protection frame in a penetrating mode, so that the stability is improved while the chain is wound and unwound outside, the clamping plates and the friction plates can play a role in clamping the chain when the chain is out of control, the falling speed of the sling chain is reduced or the sling chain is braked suddenly, safety is improved, and escape time is won for constructors.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting, in particular to a chain lifting device. Background Art

[0002] The chain lifting device is a common vertical transportation equipment. Its principle is to lift and lower objects through the movement of the chain. In the existing lifting device, the hook is raised and lowered by the chain. During the descent process, the counterweight drives the chain to achieve the descent of the hook.

[0003] For example, the utility model with application number CN202220356289.0 involves a chain lifting device, which can realize the automatic lifting and lowering action of the chain, is simple to operate, safe and reliable. However, when the chain loses control, the existing chain lifting device will cause the chain and the objects it lifts to fall rapidly, resulting in low safety and easy occurrence of accidents.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a chain lifting device is provided. Utility Model Content

[0005] The purpose of the present utility model is to provide a chain lifting device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chain lifting device, comprising a hanging plate and a protective assembly, an electric rotating platform being installed on the upper end of the hanging plate, the protective assembly for preventing the chain from losing control and falling rapidly being arranged on the outside of the electric rotating platform, and the protective assembly comprising a protective frame, a clamping plate, a friction plate, an electric push rod and a displacement limiting groove, a clamping plate being arranged inside the protective frame, and a friction plate being installed on the inner surface of the clamping plate, an electric push rod being installed on the outer surface of the clamping plate, and a limited displacement groove being provided on the inner wall of the protective frame.

[0007] Furthermore, the shape of the protection frame is a square, and the protection frame and the displacement limiting groove are an integrated structure.

[0008] Furthermore, the clamping plates are symmetrically arranged in two groups about the vertical center axis of the protective frame, and the clamping plates and the friction plates are tightly fitted.

[0009] Furthermore, a connecting platform is provided at the upper end of the electric rotating platform, and the electric rotating platform and the connecting platform are an integrated structure.

[0010] Furthermore, a support frame is installed on the upper end of the connection platform, and a retractable roll is installed on the inner side of the support frame.

[0011] Furthermore, a chain is provided on the outside of the retractable reel, and a mounting frame is installed on the upper end of the outer side of the connecting platform.

[0012] Furthermore, a hook is installed at the end of the chain, and an anti-slip auxiliary component is provided on the inner side of the hook.

[0013] Furthermore, the auxiliary component includes a threaded rod and an auxiliary plate, and the auxiliary plate is provided on the outside of the threaded rod.

[0014] The utility model provides a chain lifting device, which has the following beneficial effects:

[0015] 1. The utility model increases the stability of the chain while it is being retracted and released from the outside of the retractable reel by threading the chain inside the protective frame. The clamping plate and the friction plate can clamp the chain from the outside when it is out of control, reducing the speed of the chain falling or applying an emergency brake to it, increasing safety and buying time for construction workers to escape. The electric push rod provides power for the clamping plate, and the displacement limit groove allows the clamping plate to move in a directional manner, while preventing the clamping plate from deviating from the protective frame and being damaged under stress.

[0016] 2. The utility model drives the protective component and the support frame to rotate synchronously by rotating the electric rotating table, and can adjust the position of the chain, that is, fine-tune the lifting position to avoid repeated movement of the hoisted objects by personnel. The auxiliary plate is connected to the hook through the rotating shaft. When the hook is loaded with objects, the auxiliary plate rotates and connects to the threaded rod, and is limited by a nut to form a closed space to prevent the objects from slipping off the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of a chain lifting device of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of a protective component of a chain lifting device of the utility model;

[0019] Figure 3 The utility model is a chain lifting device Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. Hanging plate; 2. Electric rotating table; 3. Protection component; 301. Protection frame; 302. Clamping plate; 303. Friction plate; 304. Electric push rod; 305. Displacement limit groove; 4. Connecting table; 5. Support frame; 6. Rewinding and unwinding; 7. Chain; 8. Mounting frame; 9. Hook; 10. Auxiliary component; 1001. Threaded rod; 1002. Auxiliary plate. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 As shown, a chain lifting device includes a hanging plate 1 and a protective component 3. An electric rotating platform 2 is installed on the upper end of the hanging plate 1. The rotation of the electric rotating platform 2 drives the protective component 3 and the support frame 5 to rotate synchronously, and the position of the chain 7 can be adjusted, that is, the lifting position is fine-tuned to avoid repeated movement of the hoisted objects by personnel. A connecting platform 4 is provided on the upper end of the electric rotating platform 2, and the electric rotating platform 2 and the connecting platform 4 are an integrated structure. A support frame 5 is installed on the upper end of the connecting platform 4. The support frame 5 is used for the installation of the retractable reel 6, and the retractable reel 6 is installed on the inner side of the support frame 5. The outside of the retractable reel 6 is provided with a chain 7. The upper end of the outer side of the connecting platform 4 is installed with a mounting frame 8. The mounting frame 8 is used for connecting the device and the top frame, and a hook 9 is installed at the end of the chain 7.

[0023] like Figure 2 As shown, the protection component 3 for preventing the chain from losing control and falling rapidly is arranged on the outside of the electric rotating platform 2, and the protection component 3 includes a protection frame 301, a clamping plate 302, a friction plate 303, an electric push rod 304 and a displacement limit groove 305. The interior of the protection frame 301 is provided with a clamping plate 302, and the protection frame 301 is used for wearing the chain 7, so that the chain 7 increases stability while being retracted and unreeled outside the reel 6. The clamping plates 302 are symmetrically arranged in two groups about the vertical central axis of the protection frame 301, and the clamping plates 302 and the friction plates 303 are tightly fitted. The clamping plates 302 and the friction plates 303 can clamp the chain 7 from the outside when it loses control. The function of the invention is to reduce the falling speed of the lifting chain or apply an emergency brake to it, thereby increasing safety and buying time for the construction workers to escape. A friction plate 303 is installed on the inner surface of the clamping plate 302, and an electric push rod 304 is installed on the outer surface of the clamping plate 302. The electric push rod 304 provides power for the clamping plate 302. A limited displacement groove 305 is provided on the inner wall of the protective frame 301. The shape of the protective frame 301 is a square shape, and the protective frame 301 and the limited displacement groove 305 are an integrated structure. The limited displacement groove 305 allows the clamping plate 302 to move in a directional manner while preventing the clamping plate 302 from being deflected from the protective frame 301 and damaged when subjected to force.

[0024] like Figure 3 As shown, an anti-slip auxiliary component 10 is provided on the inner side of the hook 9, and the auxiliary component 10 includes a threaded rod 1001 and an auxiliary plate 1002, and an auxiliary plate 1002 is provided on the outside of the threaded rod 1001. The auxiliary plate 1002 is connected to the hook 9 through a rotating shaft. When the hook 9 is hooked with an object, the auxiliary plate 1002 rotates and connects with the threaded rod 1001, and is limited by a nut to form a closed space to prevent the object from slipping off the hook 9.

[0025] In summary, the chain lifting device is first based on Figure 1-Figure 3When in use, the mounting bracket 8 is installed in the pre-installed position of the device, and the motor at the end of the retractable reel 6 is controlled to control the inner rotation of the support bracket 5 for retracting and unretracting the chain 7. The retracting and unretracting of the chain 7 drives the lifting and lowering of the hook 9, that is, the lifting and lowering of the article. When the chain 7 is retracted and unretracted, it moves in the protective frame 301, so that the chain 7 is retracted and unretracted outside the retractable reel 6 to a certain degree. When the chain is out of control, the electric push rod 304 provides power to the clamping plate 302, so that the clamping plate 302 and the friction plate 303 play an external clamping role on the outside of the chain 7, reducing the speed of the chain falling or performing an emergency brake, thereby increasing safety. In order to buy escape time for construction workers, the displacement limit groove 305 allows the clamping plate 302 to move in a directional manner while preventing the clamping plate 302 from being deflected and damaged from the protective frame 301 under force. During hoisting, the electric rotary table 2 can be controlled to rotate to drive the protective component 3 and the support frame 5 to rotate synchronously. The position of the chain 7 can be adjusted, that is, the hoisting position can be fine-tuned to avoid repeated movement of the hoisted objects by personnel. When hooking the objects on the hook 9, the auxiliary plate 1002 is controlled to rotate and connect with the threaded rod 1001, and the nut is used to limit it to form a closed space to prevent the objects from slipping off the hook 9.

[0026] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A chain hoisting device, comprising a hanging plate (1) and a protective assembly (3), characterized in that: An electric rotating platform (2) is installed at the upper end of the hanging plate (1); the protective component (3) for preventing the hanging chain from losing control and falling at a high speed is arranged on the outer side of the electric rotating platform (2); and the protective component (3) comprises a protective frame (301), a clamping plate (302), a friction plate (303), an electric push rod (304) and a displacement limiting groove (305); the clamping plate (302) is arranged inside the protective frame (301), and the friction plate (303) is installed on the inner surface of the clamping plate (302); the electric push rod (304) is installed on the outer surface of the clamping plate (302), and the inner wall of the protective frame (301) is provided with a displacement limiting groove (305).

2. A chain lifting device according to claim 1, characterized in that: The protective frame (301) is in the shape of a square, and the protective frame (301) and the displacement limiting groove (305) are an integrated structure.

3. A chain hoisting device according to claim 1, characterized in that: The clamping plates (302) are symmetrically arranged in two groups about the vertical center axis of the protection frame (301), and the clamping plates (302) and the friction plates (303) are tightly fitted.

4. A chain lifting device according to claim 1, characterized in that: A connecting platform (4) is provided at the upper end of the electric rotating platform (2), and the electric rotating platform (2) and the connecting platform (4) are an integrated structure.

5. A chain hoisting device according to claim 4, characterized in that: A support frame (5) is installed on the upper end of the connection platform (4), and a retractable reel (6) is installed on the inner side of the support frame (5).

6. A chain lifting device according to claim 5, characterized in that: A chain (7) is provided on the outside of the retractable reel (6), and a mounting frame (8) is installed on the upper end of the outer side of the connecting platform (4).

7. A chain lifting device according to claim 6, characterized in that: A hook (9) is installed at the end of the chain (7), and an anti-slip auxiliary component (10) is provided on the inner side of the hook (9).

8. A chain hoisting device according to claim 7, characterized in that: The auxiliary component (10) comprises a threaded rod (1001) and an auxiliary plate (1002), and the auxiliary plate (1002) is arranged outside the threaded rod (1001).

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