Electric chain hoist

Abstract

The utility model discloses an electric chain hoist, which relates to the technical field of electric hoist equipment and comprises an electric hoist body and a chain driven by the electric hoist body, a lifting hook is arranged on the chain, a supporting plate is arranged on the outer wall of the electric hoist body, one end of the chain penetrates through the supporting plate, a sliding disc is arranged on the supporting plate in a sliding mode, and the lifting hook is arranged on the sliding disc. A fixing cover is arranged on the sliding disc, a first motor is arranged on the fixing cover, a limiting rope is wound at the output end of the first motor, the chain is connected with a lifting hook through a connecting plate, one end of the limiting rope is connected with the connecting plate, and when a worker moves the lifting hook out for rapid movement traditionally, due to certain inertia, the lifting hook is not prone to falling off. When the chain is moved, the chain shakes to a certain extent, a lifting hook is easily driven to touch surrounding equipment or personnel by mistake, the personnel manually stabilize the chain, certain potential safety hazards exist, and the chain can be stabilized in time after the chain is moved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hoist equipment, in particular to a chain electric hoist. Background Art

[0002] Chain electric hoist, chain electric hoist consists of an electric motor, a transmission mechanism and a sprocket. It has the characteristics of compact structure, small size, light weight, high efficiency, easy use, reliable braking and simple maintenance.

[0003] The traditional chain electric hoist replaces the steel wire with a chain, retaining the lightweight and convenient characteristics of the hand chain hoist, and improving the shortcomings of the hand chain hoist such as manual operation and slow lifting speed. It combines the advantages of the hand chain hoist and the electric hoist. However, when personnel move the hook down for rapid movement, the chain will swing due to a certain inertia, which can easily cause the hook to accidentally hit surrounding equipment or personnel. Manual stabilization by personnel poses certain safety hazards. Utility Model Content

[0004] The utility model aims to provide a chain electric hoist which can stabilize the chain in time after moving.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a chain electric hoist, including an electric hoist body and a chain driven by the electric hoist, a hook is arranged on the chain, a support plate is arranged on the outer wall of the electric hoist body, and one end of the chain passes through the support plate, a sliding disk is slidably arranged on the support plate, a fixed cover is arranged on the sliding disk, a motor 1 is arranged on the fixed cover, a limiting rope is wound around the output end of the motor 1, the chain is connected to the hook through a connecting plate, and one end of the limiting rope is connected to the connecting plate.

[0006] Preferably, the outer wall of the sliding disk is provided with a driven wheel, the support plate is provided with a driving wheel meshing with the driven wheel, and the driving wheel is connected to the second motor.

[0007] Preferably, a movable disk is rotatably provided on the connecting plate, a connecting block is provided at one end of the limiting rope, the connecting block is connected to the movable disk via a connecting bolt, and a top fixing bolt is screwed on the movable disk.

[0008] Preferably, an auxiliary component is also included, which includes an air pump and an inflation rod arranged on a support plate, the inflation rod is hollow, the air pump is connected to the inflation rod through a transfer tube, a limiting cylinder is slidably arranged on the inflation rod, and the limiting cylinder is sleeved on the outside of the chain.

[0009] Preferably, an extension cylinder is slidably provided on the limiting cylinder.

[0010] Preferably, the inner walls of the limiting tube and the extending tube are both provided with buffer pads.

[0011] The beneficial effects of the utility model are as follows: the utility model arranges a support plate on the electric hoist body, a motor 1 is arranged on the support plate, a limit rope is arranged at the output end of the motor 1 and connected to the connecting plate on the hook. When the chain shakes, the limit rope is driven by the motor 1 to pull the chain, thereby reducing the shaking amplitude of the chain. Compared with the prior art, the utility model can improve the stability of the chain when the electric hoist body moves, avoid excessive shaking, affect surrounding equipment or personnel, and reduce certain safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram for showing some mechanisms on the main body of the electric hoist in one embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram for separately showing some mechanisms on the support plate in one embodiment of the utility model;

[0014] Figure 3 for Figure 2 A magnified view of part A;

[0015] Figure 4 This is an exploded view for showing a partial mechanism on a hook in one embodiment of the utility model.

[0016] Figure numerals: 1. Electric hoist body; 2. Support plate; 3. Connecting bolt; 4. Connecting block; 5. Top bolt; 6. Limiting rope; 7. Driving wheel; 8. Motor 1; 9. Fixed cover; 10. Sliding plate; 11. Driven wheel; 12. Motor 2; 13. Chain; 14. Air pump; 15. Transfer tube; 16. Inflatable rod; 17. Buffer pad; 18. Limiting cylinder; 19. Extension cylinder; 20. Connecting plate; 21. Hook; 22. Moving disk. DETAILED DESCRIPTION

[0017] The following is only a preferred implementation of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0018] It should be noted that, in this article, relational terms such as first and second, such as "connecting board one, connecting board two", etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0019] The directional words mentioned in this embodiment, such as "up, down, left, right", etc., are only used in conjunction with the drawings to enable technicians in this technical field to understand the relationship between various features or parts.

[0020] In this embodiment, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0021] like Figures 1 to 4 As shown, a chain electric hoist comprises an electric hoist body 1 and a chain 13 driven by the electric hoist body 1. A connecting plate 20 is fixed to the top of the chain 13. A hook 21 is rotatably connected to the lower side of the connecting plate 20. A support plate 2 is fixed to the outer wall of the electric hoist body 1. The chain 13 extending from the electric hoist body 1 passes through the support plate 2. A sliding plate 10 is horizontally rotatably provided on the lower side of the support plate 2. A driven wheel 11 is fixedly sleeved on the outer wall of the sliding plate 10. A motor 12 is fixed to the support plate 2. The outer wall of the output shaft of the motor 12 is sleeved with a meshing member engaged with the driven wheel 11. The driving wheel 7 of the transmission has a fixed cover 9 fixed on the lower side of the sliding plate 10, and a motor 8 is arranged on the fixed cover 9. In this embodiment, a driving rod (not shown in the drawings) is sleeved on the output shaft of the motor 8, and a limiting rope 6 is wound on the driving rod. A movable plate 22 is horizontally rotated on the upper side of the connecting plate 20, and a connecting block 4 is fixed to one end of the limiting rope 6. The connecting block 4 is screwed to the upper side of the movable plate 22 through a connecting bolt 3. A fixing bolt 5 is also arranged on the movable plate 22, and its purpose is to facilitate personnel to fix and limit the movable plate 22 on the connecting plate 20.

[0022] An inflatable rod 16 is also vertically fixed on the lower side of the support plate 2. In this embodiment, the inflatable rod 16 is hollow and can be inflated internally, and can be inflated and expanded. It is made of wear-resistant material. An air pump 14 is fixed on the upper side of the support plate 2. The air pump 14 is provided with air supply and air suction ends, and is connected to the inflatable rod 16 through a transfer pipe 15. The inflatable rod 16 is inflated by the air supply of the air pump 14 to give it a certain shape and fix it. A limiting cylinder 18 is sleeved on the outside of the chain 13. One end of the limiting cylinder 18 The end is slidably connected with the inflatable rod 16, and an extension tube 19 is slidably arranged on the side of the limiting tube 18 toward the connecting plate 20. In the present embodiment, two groups of extension tubes 19 are arranged, which are slidably arranged head to tail along the length direction of the chain 13. Personnel can change the number and length of the extension tubes 19 according to actual conditions. Buffer pads 17 are respectively fixed on the inner walls of the limiting tube 18 and the extension tube 19. The purpose is to prevent the outer wall of the chain 13 from directly contacting the inner walls of the limiting tube 18 and the extension tube 19 to cause wear and damage.

[0023] When personnel need to quickly move the electric hoist body 1 to a designated place, first determine its moving direction, then control the motor 2 12 to rotate and drive the driving wheel 7, the driving wheel 7 is meshed with the driven wheel 11 for transmission, and drives the sliding disk 10 to rotate, and at the same time the fixed cover 9 is synchronously driven, so that the limit rope 6 is located in the opposite direction of the moving direction of the electric hoist body 1. After the movement is completed, tighten the top fixing bolt 5 to fix the position of the moving disk 22 and move synchronously with the connecting plate 20. The air pump 14 starts to inflate the inflatable rod 16 so that the inflatable rod 16 has a certain shape and a fixed position. The personnel starts to move the electric hoist body 1. When it stops, the motor 1 8 starts to start, starts in forward rotation, winds the limit rope 6, and the chain under the electric hoist body 1 Due to inertia, the chain 13 will continue to swing in the moving direction when the electric hoist body 1 stops, and the limit rope 6 is tightened, which indirectly gives an opposite pulling force to the chain 13, reducing its swinging range. After the chain 13 is pulled, it will still swing left and right. At this time, the limit cylinder 18 and the extension cylinder 19 supported by the inflatable rod 16 limit the chain 13, reducing its swinging range, so that the electric hoist body 1 can stabilize the chain 13 in time after moving, reducing the hidden dangers of bumping against surrounding equipment or personnel due to excessive inertia after movement. When it is necessary to move quickly in another direction, loosen the top fixing bolt 5, and the motor 12 starts to rotate, so that the limit rope 6 is located in the opposite direction of the moving direction, and then tighten the top fixing bolt 5.

[0024] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An electric chain hoist, comprising an electric hoist body (1) and a chain (13) driven by the electric chain hoist, wherein the chain (13) is provided with a hook (21), It is characterized in that The outer wall of the electric hoist body (1) is provided with a support plate (2), and one end of the chain (13) passes through the support plate (2); A sliding disk (10) is slidably arranged on the support plate (2), a fixed cover (9) is arranged on the sliding disk (10), a motor (8) is arranged on the fixed cover (9), and a limiting rope (6) is wound around the output end of the motor (8); The chain (13) is connected to the hook (21) via a connecting plate (20), and one end of the limiting rope (6) is connected to the connecting plate (20).

2. The electric chain hoist according to claim 1, characterized in that: The outer wall of the sliding plate (10) is sleeved with a driven wheel (11), and the support plate (2) is provided with a driving wheel (7) meshing with the driven wheel (11) for transmission, and the driving wheel (7) is connected to the second motor (12).

3. The electric chain hoist according to claim 1, characterized in that: A movable disk (22) is rotatably arranged on the connecting plate (20), a connecting block (4) is arranged at one end of the limiting rope (6), the connecting block (4) is connected to the movable disk (22) via a connecting bolt (3), and a fixing bolt (5) is screwed onto the movable disk (22).

4. The electric chain hoist according to claim 1, characterized in that: The invention also comprises an auxiliary component, wherein the auxiliary component comprises an air pump (14) and an inflatable rod (16) arranged on the support plate (2); the inflatable rod (16) is hollow, the air pump (14) is connected to the inflatable rod (16) through a transfer tube (15), a limiting cylinder (18) is slidably arranged on the inflatable rod (16), and the limiting cylinder (18) is sleeved on the outside of the chain (13).

5. The electric chain hoist according to claim 4, characterized in that: An extension tube (19) is slidably arranged on the limiting tube (18).

6. The electric chain hoist according to claim 5, characterized in that: The inner walls of the limiting tube (18) and the extending tube (19) are both provided with buffer pads (17).

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