Lithium battery ratchet shear gearbox

Abstract

The utility model relates to a shearing machine, in particular to a lithium battery ratchet shear gearbox, and solves the problem of structural design of the shearing machine. Comprising a base, the base is provided with a front installation part and a rear installation part, the axes of the front installation part and the rear installation part are parallel, a brushless motor is arranged at the front installation part, a ratchet wheel assembly which is assembled with the brushless motor in a linkage mode is arranged at the rear installation part, and an inner sleeve part which is integrally connected with the rear installation part and is matched with the ratchet wheel assembly in a one-way mode is arranged on the rear installation part. The inner sleeve part is of a central through structure, ratchets are arranged on the inner wall of the inner sleeve part, a fixed knife rest which is fixedly assembled is further arranged on the rear installation part, and an output gear is arranged on the portion, on the outer side of the fixed knife rest, of the rear installation part. The influence of deformation and curling of the cable inner core and the cable skin in the shearing process is reduced, and smooth shearing operation is ensured.

Description

Technical Field

[0001] The utility model relates to a shearing machine, in particular to a lithium-electric ratchet shear gear box. Background Art

[0002] Cable cutting generally requires professional tools, and there are many types of cutting machines, which are mainly reflected in the differences in cutters and transmission structures. Among them, handheld cutters often have problems such as loud noise, strong vibration, and frequent jams when used, which reduces the efficiency of cable cutting and requires frequent operation. Therefore, existing handheld products are difficult to meet the cutting needs of large workloads. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the utility model provides a lithium-electric ratchet shears gear box.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a lithium-electric ratchet shears gear box, comprising a base, the base having a front mounting portion and a rear mounting portion with axes parallel to each other, the front mounting portion being provided with a brushless motor, the rear mounting portion being provided with a ratchet assembly assembled in linkage with the brushless motor, and the rear mounting portion being provided with an inner sleeve portion which is integrally connected and unidirectionally matched with the ratchet assembly, the inner sleeve portion being a central through structure, and ratchets being provided on the inner wall of the inner sleeve portion, the rear mounting portion being provided with a fixed tool holder which is fixedly assembled, the rear mounting portion being provided with an output gear on the outer side of the fixed tool holder, the output gear and the ratchet assembly being transmission-matched, the fixed tool holder being provided with a movable tool holder hingedly connected at one end, the movable tool holder being meshed and linked with the output gear, the movable tool holder rotating in an arc trajectory with the hinge point as the center, and the fixed tool holder and the movable tool holder respectively having a fixed section and a movable section on the opposite ends.

[0005] The fixed tool holder and the movable tool holder are both arc-shaped structures, and the movable tool holder has a protruding extension portion at one end away from the movable section.

[0006] The movable tool holder is provided with a plurality of hollow grooves along the outer edge, and the width of the hollow grooves gradually increases toward one side along the outer edge.

[0007] The movable tool holder is provided with meshing teeth on the arc-shaped outer side wall, and the meshing teeth are meshed and linked with the output gear.

[0008] It also includes a circuit board and a lithium battery that controls the operation of the brushless motor.

[0009] Beneficial effects of the utility model: the lithium battery ratchet shear gear box provided by the utility model provides a tooth transmission shearing structure, which improves the transmission efficiency, reduces the influence of deformation and curling of the cable inner core and cable skin during the shearing process, and ensures the smooth progress of the shearing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of the structure of the utility model in a side plan view. DETAILED DESCRIPTION

[0012] like Figure 1-Figure 2 As shown, a lithium-electric ratchet shear gearbox includes a base 1, and the base 1 has a front mounting portion 2 and a rear mounting portion 3 with parallel axes. The front mounting portion 2 and the rear mounting portion 3 are on the same side relative to the base 1, which is conducive to the handheld device being tilted to one side to maintain stability. A brushless motor is also arranged at the front mounting portion 2. The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronics product. Since the brushless DC motor is operated in an automatic control mode, it does not need an additional starting winding on the rotor like a synchronous motor that is started under heavy load under variable frequency speed regulation, and it does not produce oscillation and loss of step when the load changes suddenly.

[0013] The rear mounting portion 3 is provided with a ratchet assembly that is assembled in linkage with the brushless motor, and the rear mounting portion 3 is provided with an inner sleeve that is integrally connected and unidirectionally matched with the ratchet assembly. The inner sleeve is a central through structure, and ratchets are provided on the inner wall of the inner sleeve. The ratchet assembly is composed of a number of ratchets and matching parts. Here, the traditional split inner sleeve is mainly changed to an integrated structure, which is conducive to reducing assembly gaps and mechanical vibrations. The ratchet and the inner sleeve are adjusted to achieve unidirectional matching through tooth direction. In this embodiment, the mounting shaft size of the ratchet is further adjusted from 4mm to 8mm. The above main body is a mature technical means, so it is not elaborated and restricted too much. Similarly, there are no restrictions on the number of ratchets and the star-shaped layout.

[0014] The rear mounting part 3 is also provided with a fixed tool holder 4, and the rear mounting part 3 is provided with an output gear 5 on the outside of the fixed tool holder 4. The fixed tool holder 4 is provided with a hinged movable tool holder 6 at one end, and the movable tool holder 6 is meshed and linked with the output gear 5. The movable tool holder 6 rotates in an arc trajectory with the hinge point as the center of the circle. The fixed tool holder 4 and the movable tool holder 6 have a fixed section 7 and a movable section 8 on the opposite ends respectively. The detachable fixed tool holder 4 is conducive to the replacement of different scales, and the fixed tool holder 4 and the movable tool holder 6 rotate relative to each other to achieve the shearing effect of the sharp section. It should be pointed out that the output gear 5 is matched with the ratchet assembly, driven by a brushless motor, and transmitted to the output gear 5 through various gears, and the output gear 5 drives the movable tool holder 6 to rotate relative to the fixed tool holder 4.

[0015] The fixed tool holder 4 and the movable tool holder 6 are both arc-shaped structures, and the movable tool holder 6 has a protruding extension 9 at the end away from the movable section 8. The crescent-shaped structure is conducive to sheathing the cable to prevent slipping and detachment, and the extension 9 provides a force point for loosening and separation when it is stuck. The movable tool holder 6 is provided with a plurality of hollow grooves 10 along the outer edge, and the width of the hollow groove 10 gradually increases along the outer edge to one side. The design of the hollow groove 10 follows the laws of mechanics. Designing a hollow groove 10 with a larger width at a location where the width of the crescent-shaped structure is larger is conducive to mechanical balance and vibration reduction.

[0016] The movable tool holder 6 is provided with meshing teeth 11 on the arc-shaped outer side wall, and the meshing teeth 11 are meshed and linked with the output gear 5. This is the matching mode between the output gear 5 and the movable tool holder 6, which is conducive to smooth driving, further offsets or reduces the influence of vibration, and ensures transmission efficiency. It also includes a circuit board and a lithium battery for controlling the operation of the brushless motor, and the lithium battery power supply and circuit board control facilitate handheld operation.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. At the same time, the basic principles, main features and advantages of the present invention are shown and described above, which should be understood by technicians in this industry.

Claims

1. A lithium-electric ratchet shears gear box, characterized in that: The invention comprises a base, wherein the base has a front mounting portion and a rear mounting portion with axes parallel to each other, the front mounting portion is provided with a brushless motor, the rear mounting portion is provided with a ratchet assembly assembled in linkage with the brushless motor, and the rear mounting portion is provided with an inner sleeve portion which is integrally connected and unidirectionally matched with the ratchet assembly, the inner sleeve portion is a central through structure, and ratchets are arranged on the inner wall of the inner sleeve portion, the rear mounting portion is also provided with a fixed tool holder which is fixedly assembled, the rear mounting portion is provided with an output gear on the outer side of the fixed tool holder, the output gear and the ratchet assembly are matched in transmission, the fixed tool holder is provided with a movable tool holder hingedly connected at one end, the movable tool holder is meshed and linked with the output gear, the movable tool holder rotates in an arc trajectory with the hinge point as the center, and the fixed tool holder and the movable tool holder respectively have a fixed section and a movable section on the opposite ends.

2. A lithium-electric ratchet shears gear box as claimed in claim 1, characterized in that: The fixed tool holder and the movable tool holder are both arc-shaped structures, and the movable tool holder has a protruding extension portion at one end away from the movable section.

3. A lithium-electric ratchet shears gear box as claimed in claim 1 or 2, characterized in that: The movable tool holder is provided with a plurality of hollow grooves along the outer edge, and the width of the hollow grooves gradually increases toward one side along the outer edge.

4. A lithium-electric ratchet shears gear box as claimed in claim 3, characterized in that: The movable tool holder is provided with meshing teeth on the arc-shaped outer side wall, and the meshing teeth are meshed and linked with the output gear.

5. A lithium-electric ratchet shears gear box as claimed in claim 4, characterized in that: It also includes a circuit board and a lithium battery that controls the operation of the brushless motor.

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