Auxiliary tool electrically driven by hand chain of chain block

Abstract

The invention discloses an auxiliary tool electrically driven by a chain block chain. The auxiliary tool comprises a shell, a first chain wheel and a second chain wheel. The shell comprises a first half shell and a second half shell which are connected in a matched mode. The first chain wheel and the second chain wheel are installed on the first rotating shaft and the second rotating shaft respectively. The first chain wheel and the second chain wheel are arranged in the shell at intervals through the first rotating shaft and the second rotating shaft respectively. The two ends of the first rotating shaft are fixed and limited through first elastic check rings or first nuts. The two ends of the second rotating shaft are fixed and limited through second elastic check rings or second nuts. The two ends of the first rotating shaft and the two ends of the second rotating shaft are hexagonal heads. The shell is provided with two handles, a first notch and a second notch, wherein a chain can penetrate through the first notch and the second notch. The auxiliary tool can be suitable for most standard chain blocks, the auxiliary tool can be driven by an electric wrench after being connected with a hand chain of the chain block in a matched mode during use, the time of a chain of the chain block is effectively shortened, and the auxiliary tool is convenient to use and carry.

Description

Technical Field

[0001] The invention belongs to the technical field of hand chain hoists, and in particular relates to an auxiliary tool for electrically driving a hand chain of a hand chain hoist. Background Art

[0002] Hand chain hoists are lifting tools that may be used in all walks of life, especially in work environments such as heavy industry or light industry equipment maintenance. They are more widely used in situations where the lifting personnel cannot move the equipment and do not need or have the conditions to use lifting equipment. The greater the lifting weight and the greater the height of the hand chain hoist, the lower the efficiency of manual pulling. Not only are personnel prone to fatigue, but the working time is also greatly increased. Therefore, a special tool is particularly needed that can not only pull the chain quickly, but also be simple to use, highly versatile and easy to carry.

[0003] Since many working conditions are not suitable for the use of electric hoists, or the management requirements and maintenance costs of electric hoists are relatively high, electric hoists are not used in many cases; in order to achieve the efficiency of electric hoists without the cumbersome management requirements and difficulty of electric hoists, a Chinese patent with patent announcement number CN202265361U discloses a power transformation device for hand chain hoists, including a hand chain wheel shaft and an electric wrench sleeve; the electric wrench sleeve is coaxially welded with the hand chain wheel shaft and powered by an electric wrench. Although this technical solution can be driven by an electric wrench, it still has the following problems: 1. The hand chain wheel axle of the hand chain hoist widely used at present is protected by a cover, and the electric wrench head cannot be directly welded. If the cover is removed for welding, the cover cannot be reinstalled normally. The hand chain hoist without a cover for protection is prone to zipper falling off or affecting the design strength and safety protection of the hand chain hoist itself.

[0004] 2. Directly welding the electric wrench head on the hand chain wheel shaft can easily affect the material properties of the hand chain wheel shaft. As a lifting tool, the hand hoist should try its best to ensure that the original design size and material strength are not affected.

[0005] 3. The welding of the bracelet wheel shaft and the electric wrench glove head needs to be performed by electric welding, which not only requires professional operation by the welder, but also requires the implementation of various safety protection measures at the work site.

[0006] 4. Even if all welding working conditions can be met and implemented, the hand chain hoist is not suitable for hanging points that exceed the height that the human body can directly operate. In the actual working environment, there will be many hanging points exceeding 1.5 meters. As the hanging points increase, the operability of using an electric wrench becomes lower, and this method cannot be used for operation in many environments.

[0007] 5. For operations that require multiple hand hoists for connection, all hand hoists need to be modified, and each needs to be welded with an electric wrench head. The modification work is large and there will be many inconveniences during the operation. Summary of the invention

[0008] The purpose of the present invention is to provide an auxiliary tool for a hand chain hoist and a hand chain electrically driven, which is easy to operate and has strong applicability.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an auxiliary tool for hand chain hoist electrically driven by hand chain, characterized in that it includes a shell, a first sprocket and a second sprocket; the shell includes a first half shell and a second half shell that are matched and connected, and the first sprocket and the second sprocket are respectively installed on the first rotating shaft and the second rotating shaft; the first half shell and the second half shell are both provided with a first axial hole and a second axial hole; the first sprocket and the second sprocket are arranged in the shell at intervals, and the two ends of the first rotating shaft respectively pass through the first axial holes on the first half shell and the second half shell, and are fixed and limited by a first elastic retaining ring or a first nut; the two ends of the second rotating shaft respectively pass through the second axial holes on the first half shell and the second half shell, and are fixed and limited by a second elastic retaining ring or a second nut; both ends of the first rotating shaft and the second rotating shaft are hexagonal heads, and two handles and a first notch and a second notch for the chain to pass through are provided on the shell.

[0010] Furthermore, bearing mounting rings are provided at the first axial hole and the second axial hole. The bearing mounting rings are fixedly connected to the side wall of the shell and are coaxial with the corresponding axial hole. A bearing is provided in each bearing mounting ring. The outer ring of the bearing is interference fit with the bearing mounting ring. The outer diameter of the first rotating shaft and the second rotating shaft is smaller than the inner diameter of the bearing.

[0011] Furthermore, the first half shell and the second half shell are symmetrically arranged, and the handle, the first notch and the second notch are all divided into halves.

[0012] Furthermore, the shell is made of thin steel plate or aluminum alloy material.

[0013] The beneficial effect of the present invention is that: when using the above structure, the hand chain of the hand chain hoist is installed in the auxiliary tool, matched with the first and second sprockets, and then the electric wrench is matched with the hexagonal head of the rotating shaft, and the electric wrench is started to quickly pull the hand chain, effectively reducing the time of the hand chain hoist chain, especially for hand chain hoists with large lifting strokes. In addition, when using, it is only necessary to match and connect the auxiliary tool with the hand chain of the hand chain hoist, and then drive it through the electric wrench. The operation is simple and convenient, and it can be applied to most standard models of hand chain hoists. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0015] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structural decomposition.

[0017] Figure 3 It is a schematic diagram of the hand zipper being connected with the first sprocket and the second sprocket.

[0018] Figure 4 It is a structural diagram of embodiment 2 of the present invention.

[0019] Figure 5 yes Figure 4 Schematic diagram of the structural decomposition. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict. Example

[0021] like Figure 1 , 2 As shown, the present invention is a hand chain hoist hand chain electrically driven auxiliary tool, comprising a housing 10, a first sprocket 20 and a second sprocket 30. The housing 10 is provided with two handles 11 and a first notch 12 and a second notch 13 for the chain to pass through.

[0022] Among them, Figure 2 As shown, the shell 10 includes a first half shell 101 and a second half shell 102 that are matingly connected. The first half shell 101 and the second half shell 102 are symmetrical structures. The handle 11, the first notch 12 and the second notch 13 are divided into halves and are respectively placed on the first half shell 101 and the second half shell 102.

[0023] The first sprocket 20 and the second sprocket 30 are respectively mounted on the first rotating shaft 21 and the second rotating shaft 31; the first half shell 101 and the second half shell 102 are both provided with a first shaft hole 103 and a second shaft hole 104. The first sprocket 20 and the second sprocket 30 are arranged in the housing 10 at intervals. At the same time, the two ends of the first rotating shaft 21 pass through the first shaft hole 103 on the first half shell and the second half shell, respectively, and are fixed and limited by the first elastic retaining ring 105. The two ends of the second rotating shaft 31 pass through the second shaft hole 104 on the first half shell and the second half shell, respectively, and are fixed and limited by the second elastic retaining ring 106. Both ends of the first rotating shaft 21 and the second rotating shaft 31 are hexagonal heads. The standard hexagonal head size design is adopted, and a standard electric wrench can be used to drive. In addition, in actual application, the elastic retaining ring can also be replaced by a nut, and a thread is provided at the corresponding position of the rotating shaft, and the same limiting effect can be achieved by installing a nut and tightening it.

[0024] Preferably, since the pulling force of the hand chain of a conventional hand winch is not high, the first half shell 101 and the second half shell 102 can be made by stamping thin steel plates or aluminum alloy materials, and the appropriate material can be selected according to the actual use conditions.

[0025] When in use, first connect the hand chain 40 of the hand chain hoist to the first sprocket and the second sprocket in an S-shaped manner (such as Figure 3 As shown), the shell is fixed and assembled. Then the operator holds the handle and allows the hand chain to smoothly enter and exit the first notch 12 and the second notch 13. Finally, determine the required rotation direction of the hand chain according to the actual situation, use a qualified electric wrench with a matching sleeve to connect with the hexagonal head of the corresponding rotating shaft, and start the electric wrench to drive. When the hand chain needs to be reversed, just reverse the electric wrench. If the electric wrench used does not have a reverse function, the operator can directly turn the auxiliary tool upside down and then drive it to achieve a reverse effect.

[0026] The auxiliary tool of the present invention is used to electrically drive the hand chain of the hand chain hoist, which is easy to operate and can effectively improve the working efficiency. Example

[0027] This embodiment is an improvement and optimization of the housing based on the first embodiment. Figure 4 , 5For illustration, a bearing mounting ring 107 is further provided at the first shaft hole 103 and the second shaft hole 104. The bearing mounting ring 107 is fixedly connected to the side wall of the housing 10 and is coaxial with the corresponding shaft hole. A bearing 108 is provided in each bearing mounting ring 107, and the outer ring of the bearing 108 is interference fit with the bearing mounting ring 107. In addition, the outer diameter of the first rotating shaft 21 and the second rotating shaft 31 is smaller than the inner diameter of the bearing 108. Such a design can facilitate the two ends of the first rotating shaft 21 and the second rotating shaft 31 to pass through the corresponding bearings. When in use, due to the support of the bearing 108, the first rotating shaft 21 and the second rotating shaft 31 will rotate more smoothly, and at the same time, it will avoid friction with the inner wall of the shaft hole, which is conducive to extending the service life.

[0028] The specific implementation modes of the present invention are described above in conjunction with the accompanying drawings, but these descriptions cannot be understood as limiting the scope of the present invention. The protection scope of the present invention is defined by the attached claims, and any changes based on the claims of the present invention are within the protection scope of the present invention.

Claims

1. A hand chain hoist hand chain electrically driven auxiliary tool, characterized in that: including a housing, a first sprocket and a second sprocket; The housing comprises a first half housing and a second half housing which are connected in a matching manner, and the first sprocket and the second sprocket are respectively mounted on the first rotating shaft and the second rotating shaft; the first half housing and the second half housing are both provided with a first shaft hole and a second shaft hole; The first sprocket and the second sprocket are arranged in the housing at intervals, and the two ends of the first rotating shaft pass through the first shaft holes on the first half housing and the second half housing respectively, and are fixed and limited by the first elastic retaining ring or the first nut; the two ends of the second rotating shaft pass through the second shaft holes on the first half housing and the second half housing respectively, and are fixed and limited by the second elastic retaining ring or the second nut; Both ends of the first rotating shaft and the second rotating shaft are hexagonal heads, and the housing is provided with two handles and a first notch and a second notch for the chain to pass through.

2. The hand chain hoist hand chain electrically driven auxiliary tool according to claim 1, characterized in that: The first shaft hole and the second shaft hole are also provided with bearing mounting rings, which are fixedly connected to the side wall of the shell and are coaxial with the corresponding shaft hole. A bearing is provided in each bearing mounting ring, and the outer ring of the bearing is interference fit with the bearing mounting ring. The outer diameter of the first rotating shaft and the second rotating shaft is smaller than the inner diameter of the bearing.

3. The hand chain hoist hand chain electrically driven auxiliary tool according to claim 1, characterized in that: The first half shell and the second half shell are symmetrically arranged, and the handle, the first notch and the second notch are all divided into halves.

4. The hand chain hoist hand chain electrically driven auxiliary tool according to any one of claims 1 to 3, characterized in that: The shell is made of thin steel plate or aluminum alloy material.

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