Electric hoist device for hand chain block

Abstract

The utility model discloses an electric reversing chain device of hand chain hoist relates to hoisting technology field, including hand chain hoist, reverse double -drive mechanism, retainer and counterweight, the hand chain hoist's hand pull down chain connects reverse double -drive mechanism, the reverse double -drive mechanism is installed in the retainer, and reverse double -drive mechanism is connected power source, the counterweight is connected with the retainer through the adjustment sling, the invention is driven through electric drive reverse double -drive mechanism and makes the cyclic movement of hand pull down chain, realizes the sustained hoisting operation of hand chain hoist, and convenient to disassemble can be recycled.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting technology, and in particular to an electric chain hoisting device for a hand chain hoist. Background Technology

[0002] Hand-operated chain hoists are widely used in enterprises, docks, warehouses, and construction projects due to their wide application range, economic efficiency, and ease of operation. For example, in thermal power plant construction, the installation of the main steel structure usually precedes the installation of equipment and pipelines. A large number of equipment and pipelines need to be temporarily suspended inside the boiler to ensure the main steel structure is completed before pipeline welding can proceed. In addition to formal supports, numerous hand-operated chain hoists are used for temporary pipe suspension. The arrival time of some equipment does not always coincide with the main structure construction, requiring the use of hand-operated chain hoists during maintenance and repair. When the equipment is heavy and large, multiple hand-operated chain hoists are needed. The typical adjustment range of hand-operated chain hoists is 2-6 meters; manual operation requires significant sustained effort and poses safety risks near the hoisted load. Some installations require multiple adjustments of the lifting points, further increasing the workload.

[0003] To overcome the problems of manually operated chain hoists, some electric hoists have been developed in the prior art. For example, Chinese Patent (Publication No. CN 213085305 U, Publication Date 2021.04.30) discloses a chain electric hoist, including a hoist body, a chain box disposed on the hoist body, and a chain disposed on the hoist body. The chain box is used to store the chain, and a pressure plate that slides vertically is provided inside the chain box. A through hole is left between the pressure plate and the inner side wall of the chain box for the chain to pass through. A drive component is provided on the chain box, which drives the pressure plate to slide, thereby moving the chain upward into the chain box by the hoist body. In this solution, the drive component is placed above the lifting device, and the chain box is used for chain reversing. After installation, the electric drive part cannot be disassembled and reused, and the cost is relatively high. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an electric chain hoist reversing device that uses an electric drive reverse double-drive mechanism to drive the manual chain hoist in a cyclical motion, enabling continuous lifting operations; it is easy to disassemble and can be reused.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] An embodiment of this utility model provides an electric chain hoist with a manual chain hoist, including a manual chain hoist, a reverse double drive mechanism, a retainer, and a counterweight. The manual chain hoist is connected to the reverse double drive mechanism, which is installed inside the retainer and connected to a power source. The counterweight is connected to the retainer via an adjusting strap.

[0007] As a further implementation, the reverse dual-drive mechanism includes a driving gear and a driven gear that mesh with each other;

[0008] The driving gear and the driven gear are each connected to a friction wheel, and the hand-operated chain hoist cooperates with the friction wheel on the side of the driven gear.

[0009] As a further implementation, the friction wheel is provided with a friction wheel groove in the circumference, and the friction wheel groove is evenly distributed with a number of protrusions that are adapted to the hand-operated chain hoist.

[0010] As a further implementation, the friction wheel is made of a flexible, wear-resistant material.

[0011] As a further implementation, the retainer includes a fixed frame and a mounting frame, the fixed frame and the mounting frame being connected by a connecting component, and the adjusting straps suspending the retainer from the connecting component;

[0012] The reverse dual-drive mechanism is connected between the fixed frame and the mounting frame.

[0013] As a further implementation, the mounting bracket does not cover the area of ​​the driven gear;

[0014] The retainer also includes a packaging frame, which is connected to the mounting frame and located on the opposite side of the reverse dual-drive mechanism.

[0015] As a further implementation, the mounting shaft of the driving gear is connected in sequence to the mounting bracket and the encapsulation bracket, and the mounting shaft of the driven gear is connected to the encapsulation bracket.

[0016] As a further implementation, the power source is mounted on the outside of the mounting frame.

[0017] As a further implementation, the adjustable sling includes a sling body and a sling buckle, wherein the sling body is connected to the buckle to form a closed structure.

[0018] As a further implementation, the counterweight is provided with a mounting base on top, and the sling body is connected to the mounting base by a pin.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) The hand-operated chain hoist is connected to the reverse double drive mechanism of this utility model. The reverse double drive mechanism is electrically driven to make the hand-operated chain hoist perform cyclical motion, thereby realizing the continuous hoisting operation of the hand-operated chain hoist. The reverse double drive mechanism is input torque by a single motor, and the two friction wheels are rotated in opposite directions synchronously through gear meshing. The friction force in the same direction on the inner side of the friction wheel groove is used to drive the hand-operated chain hoist to move, thereby improving work efficiency.

[0021] (2) The reverse drive mechanism of this utility model is installed on the retainer. When installing the hand chain hoist, only the encapsulation frame needs to be removed to expose the friction wheel on the driven gear side, which is convenient for disassembling and assembling the hand chain hoist. When multiple hand chain hoists are used on site, the electric chain hoist device can be easily disassembled.

[0022] (3) One end of the adjusting sling of this utility model is connected to the cage and the other end is connected to the counterweight. The adjusting sling has a sling buckle, which can adjust the length of the sling. The adjusting sling and the counterweight are used together to provide gravity input for the electric chain hoist, ensuring continuous operation and stability. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 This is a schematic diagram of the overall structure of the electric chain hoist device according to one or more embodiments of the present invention;

[0025] Figure 2 This is a schematic diagram of the cooperation between the hand-operated chain hoist and the reverse dual-drive mechanism according to one or more embodiments of the present invention;

[0026] Figure 3 This is a schematic diagram of the reverse dual-drive mechanism and cage structure according to one or more embodiments of the present invention;

[0027] Figure 4 This is a schematic diagram of the hand-operated chain hoist and friction wheel according to one or more embodiments of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection between the adjusting sling and the counterweight according to one or more embodiments of the present invention.

[0029] Among them, 1. Hand chain hoist, 101. Hand chain hoist, 2. Motor, 3. Reverse double drive mechanism, 301. Drive gear, 302. Driven gear, 303. Friction wheel, 304. Protrusion; 4. Cage, 401. Fixing bracket, 402. Mounting bracket, 403. Encapsulation bracket; 5. Adjusting sling, 501. Sling body, 502. Sling buckle, 503. Pin; 6. Counterweight. Detailed Implementation

[0030] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0031] Example 1:

[0032] This embodiment provides an electric chain hoist reversing device, such as... Figure 1 As shown, the system includes a manual chain hoist 1, a reverse double-drive mechanism 3, a retainer 4, and a counterweight 6. The manual chain hoist 1's chain hoist 101 is connected to the reverse double-drive mechanism 3, which is installed inside the retainer 4 and connected to a power source. The counterweight is connected to the retainer 4 via an adjusting strap 5. In this embodiment, the power source is a motor 2, which drives the reverse double-drive mechanism 3 to rotate, thereby causing the manual chain hoist 101 to move linearly.

[0033] Specifically, such as Figures 2-4 As shown, the reverse dual-drive mechanism 3 includes a driving gear 301 and a driven gear 302 that mesh with each other. The driving gear 301 is connected to the motor 2, and the motor 2 drives the driving gear 301 to rotate. Due to the rotation of the driving gear 301 and the driven gear 302, the driven gear 302 rotates in the opposite direction to the driving gear 301. The driving gear 301 and the driven gear 302 are respectively mounted on their respective mounting shafts, and a friction wheel 303 is also fixed on the mounting shaft. The friction wheel 303, which is connected to the driven gear 302, is connected to the hand-operated chain hoist 101.

[0034] The friction wheel 303 is made of flexible and wear-resistant materials, such as rubber, rubber-metal composites, and thermoplastic elastomers. The friction wheel 303 has a circumferential groove, and multiple protrusions 304 are evenly distributed within the groove. These protrusions 304 are adapted to the links of the hand-operated chain hoist 101. When the friction wheel 303 rotates, the interaction between the protrusions 304 and the hand-operated chain hoist 101 drives the hand-operated chain hoist 101, effectively increasing the friction between them. Furthermore, since the hand-operated chain hoist 101 is assembled in a closed loop within the hand chain hoist 1, the rotation of the motor 2 can continuously drive the hand-operated chain hoist 101.

[0035] In this embodiment, the protrusion 304 can take other structural forms such as lentil-shaped, dot-shaped, or corrugated.

[0036] The reverse dual-drive mechanism 3 is powered by a single motor 2, which inputs torque and uses gear meshing to enable the two friction wheels 303 to rotate synchronously in opposite directions. This allows the friction force on the inner side of the groove of the friction wheel 303 to drive the hand chain hoist 101 to move, thus completing the hoisting operation of the hand chain hoist 1.

[0037] like Figure 3 and Figure 4As shown, the retainer 4 includes a fixed frame 401, a mounting frame 402, and a packaging frame 403. The motor 2 is mounted on one side of the fixed frame 401, and the reverse dual-drive mechanism 3 is located in the installation area formed between the other side of the fixed frame 401 and the mounting frame 402. The shape of the fixed frame 401 can be arbitrarily set, as long as it meets the installation requirements. The mounting frame 402 is connected to the fixed frame 401 by a connecting component located below the reverse dual-drive mechanism 3, and the adjusting strap 5 is suspended on the connecting component. The connecting component can be a pin.

[0038] Mounting bracket 402 covers the mounting area of ​​drive gear 301 and its friction wheel 303. To facilitate the installation of the hand-operated chain hoist 101, mounting bracket 402 does not cover the area of ​​driven gear 302. That is, mounting bracket 402 has two mounting points: one mounting point is located at the connection between the connecting component and mounting bracket 402, and the other mounting point is located at the connection between the mounting shaft of drive gear 301 and mounting bracket 402.

[0039] After the manual chain hoist 101 is installed onto the friction wheel 303 of the driven gear 302, in order to protect the manual chain hoist 101 and prevent it from coming off the friction wheel 303 during use, an encapsulation frame 403 is provided on the outside of the mounting frame 402 (on the side opposite to the fixed frame 401). The encapsulation frame 403 is connected to the mounting shafts of both the driving gear 301 and the driven gear 302.

[0040] like Figure 5 As shown, the adjusting strap 5 includes a strap body 501 and a strap buckle 502. One end of the strap body 501 is connected to the strap buckle 502, and the other end is inserted into the strap buckle 502, forming a closed structure, which allows for length adjustment of the strap body 501. A mounting base is provided on the top of the counterweight block, and a pin 503 is connected to the mounting base. The strap body 501 passes through the pin 503, connecting the counterweight block 6 to the adjusting strap 5. The counterweight block 6 provides the necessary reaction force for the electric chain hoist, and its weight should be greater than the manual arm strength required when pulling the chain. In this embodiment, the adjusting strap 5 and the counterweight block 6 work together to provide gravity input to the electric chain hoist, ensuring continuous, stable, and reliable operation.

[0041] In use, loosen the adjusting strap 5, open one side of the retainer 4 (remove the encapsulation frame 403), and place the hand chain hoist 101 onto the friction wheel 303 corresponding to the driven gear 302. Reinstall the encapsulation frame 403. One end of the adjusting strap 5 is connected to the retainer 4, and the other end is connected to the counterweight 6. By adjusting the length of the adjusting strap 5, the counterweight 6 is positioned so that it just touches the ground, and one side of the hand chain hoist 101 has a certain tension. The reverse double drive mechanism 3 is driven by the motor 2, which causes the friction wheel 303 to rotate, driving the hand chain hoist 101 to move linearly, thus realizing the electric drive of the hand chain hoist 1.

[0042] In this embodiment, the electric chain hoist uses a remote control to control the motor 2, which drives the hand chain hoist 101 through gear transmission and the rotation of the friction wheel 303, thus realizing the electric operation of the hand chain hoist 1. It can also realize speed adjustment, forward and reverse operation, and continuous hoisting. When using multiple hand chain hoists 1, the electric chain hoist can be easily disassembled, reducing the cost of the electric hoists.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electric chain hoist reversing device, characterized in that, The device includes a hand chain hoist, a reverse double-drive mechanism, a retainer, and a counterweight. The hand chain hoist is connected to the reverse double-drive mechanism, which is installed inside the retainer and connected to a power source. The counterweight is connected to the retainer via an adjusting strap.

2. A device according to claim 1, characterized in that The reverse dual-drive mechanism includes a driving gear and a driven gear that mesh with each other; The driving gear and the driven gear are each connected to a friction wheel, and the hand-operated chain hoist cooperates with the friction wheel on the side of the driven gear.

3. A device according to claim 2, characterised in that the chain is electrically driven. The friction wheel is provided with a friction wheel groove in the circumference, and the friction wheel groove is evenly distributed with a number of protrusions that are adapted to the hand-operated chain hoist.

4. A device according to claim 2 or 3, c h a r a c t e r i s e d in that The friction wheel is made of a flexible, wear-resistant material.

5. The electrically powered chain fall device of claim 2, wherein, The retainer includes a fixed frame and a mounting frame, which are connected by a connecting component, and the adjustable sling is suspended from the connecting component. The reverse dual-drive mechanism is connected between the fixed frame and the mounting frame.

6. A device according to claim 5, wherein the chain is a chain of the type known as a hand chain block. The mounting bracket does not cover the area of ​​the driven gear; The retainer also includes a packaging frame, which is connected to the mounting frame and located on the opposite side of the reverse dual-drive mechanism.

7. A device according to claim 6, characterized in that The mounting shaft of the driving gear is connected in sequence to the mounting bracket and the encapsulation bracket, and the mounting shaft of the driven gear is connected to the encapsulation bracket.

8. A device according to any one of claims 5 to 7, wherein the device is a motorised chain hoist. The power source is installed on the outside of the fixed frame.

9. The electric chain hoist reversing device according to claim 1, characterized in that, The adjustable sling includes a sling body and a sling buckle, and the sling body is connected to the buckle to form a closed structure.

10. A device according to claim 9, characterized in that The counterweight is provided with a mounting base on top, and the sling body is connected to the mounting base by a pin.

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