Detachable wheel pulling device

Abstract

The utility model discloses a detachable wheel pulling device which comprises a mother board, a daughter board, a screw rod and a reverse pressing board, the mother board is connected with the reverse pressing board through the screw rod, and a nut set used for adjusting the distance between the mother board and the reverse pressing board is installed on the screw rod. The daughter board is located between the mother board and the reverse pressing board, the daughter board comprises a first board body and a U-shaped clamping board fixed to one end face of the first board body, the first board body is matched with the mother board in an abutting mode, a first U-shaped notch corresponding to the U-shaped clamping board is formed in the first board body, a second U-shaped notch matched with the U-shaped clamping board is formed in the mother board, and the first U-shaped notch is matched with the second U-shaped notch. And the U-shaped clamping plate is clamped and matched with the second U-shaped notch. The detachable wheel pulling device is simple in structure, convenient to disassemble and assemble and convenient to carry and operate; the distance between the mother plate and the reverse pressing plate is adjustable, so that the shaft is conveniently separated from the coupling; calculation is convenient, adjustment is easy, manpower and material losses are reduced, the labor intensity of workers can be reduced, and the safety use coefficient is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a detachable pulley pulling device. Background Art

[0002] As a mechanical component for connecting two or more shafts to achieve torque transmission, the coupling is widely used in mechanical equipment. In the assembly of the coupling, the fit between the hole and the shaft often adopts interference fit to achieve ideal coaxiality and prevent disconnection of the connection. When we replace or repair other components, it is easy to cause a phenomenon that it is difficult to remove the coupling. In this case, many structural forms of pulley pulling devices (such as three-jaw pulley pullers, etc.) have emerged. The existing pulley pulling devices mainly exist in the form of special tools, which are bulky and not beautiful, time-consuming and laborious in the use process, and are also extremely likely to cause the pulley pulling device to be unusable due to measurement or calculation errors.

[0003] It should be noted that the above content belongs to the technical cognition scope of the inventor and does not necessarily constitute the prior art. Content of the Utility Model

[0004] Based on this, in view of the above technical problems, it is necessary to provide a detachable pulley pulling device.

[0005] In order to achieve the above object, the utility model provides a detachable pulley pulling device, which includes a mother board, a sub-board, a screw rod and a counter pressure plate. The mother board and the counter pressure plate are connected by the screw rod, and a nut group for adjusting the distance between the mother board and the counter pressure plate is installed on the screw rod. The sub-board is located between the mother board and the counter pressure plate. The sub-board includes a first board body and a U-shaped clamping plate fixed on one end face of the first board body. The first board body is in abutting cooperation with the mother board. A first U-shaped notch corresponding to the U-shaped clamping plate is provided on the first board body, and a second U-shaped notch adapted to the U-shaped clamping plate is provided on the mother board. The U-shaped clamping plate is in clamping cooperation with the second U-shaped notch.

[0006] Preferably, the counter pressure plate includes a second board body, and four third U-shaped notches distributed in a rectangular shape are formed on the second board body, and the screw rod passes through the third U-shaped notches.

[0007] Preferably, four first mounting holes distributed in a rectangular shape are formed on the mother board, and the screw rod is in plug-in cooperation with the first mounting holes.

[0008] Preferably, the nut group includes a first nut, a second nut and a third nut. The first nut, the second nut and the third nut are all threadedly installed on the screw rod. The first nut abuts against the end face of the mother board facing away from the counter pressure plate, the second nut abuts against the end face of the counter pressure plate facing the mother board, and the third nut abuts against the end face of the counter pressure plate facing away from the mother board.

[0009] Preferably, the counter pressure plate further includes a reinforcing plate, and the reinforcing plate is fixedly installed at the center of the end face of the counter pressure plate facing the mother board.

[0010] Preferably, the anti-pressure plate further includes a reinforcing rib, and the reinforcing rib is fixed at the center of the end face of the anti-pressure plate facing away from the mother plate.

[0011] Beneficial effects of the technical solution: The designed structure has strong versatility, which can reduce material waste; the structure is simple, easy to disassemble and assemble, convenient for handling and operation; the distance between the mother plate and the anti-pressure plate can be adjusted, which is convenient for separating the shaft and the coupling; by matching the sub-plates of different specifications with the mother plate, different specifications of couplings can be applied; the measurement and calculation are convenient, easy to adjust, reduce the loss of manpower and materials, can reduce the labor intensity of workers, and improve the safety factor of use. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of a detachable pulley pulling device according to an embodiment of the present invention;

[0013] Figure 2 is a side view of the mother plate according to an embodiment of the present invention;

[0014] Figure 3 is a schematic structural diagram of the sub-plate according to an embodiment of the present invention;

[0015] Figure 4 is a side view of the sub-plate according to an embodiment of the present invention;

[0016] Figure 5 is a front view of the anti-pressure plate according to an embodiment of the present invention;

[0017] Figure 6 is a side view of the anti-pressure plate according to an embodiment of the present invention;

[0018] In the figure, 1. Mother plate; 11. Second U-shaped notch; 12. First mounting hole; 2. Sub-plate; 21. First plate body; 211. First U-shaped notch; 22. U-shaped clamping plate; 3. Screw; 4. Anti-pressure plate; 41. Second plate body; 411. Third U-shaped notch; 42. Reinforcing plate; 43. Reinforcing rib; 5. First nut; 6. Second nut; 7. Third nut. Detailed Embodiments

[0019] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Please refer to Figures 1 to 6, an embodiment of the present application provides a detachable pulley pulling device, which includes a mother board 1, a daughter board 2, a screw rod 3 and a counter pressure plate 4. The mother board 1 and the counter pressure plate 4 are connected by the screw rod 3. Four screw rods 3 are provided, and nut groups for adjusting the distance between the mother board 1 and the counter pressure plate 4 are installed on the screw rods 3; the daughter board 2 is located between the mother board 1 and the counter pressure plate 4. The daughter board 2 includes a first board body 21 and a U-shaped clamping plate 22 fixed on one end face of the first board body 21. The first board body 21 is in abutting fit with the mother board 1. A first U-shaped notch 211 corresponding to the U-shaped clamping plate 22 is provided on the first board body 21, and a second U-shaped notch 11 adapted to the U-shaped clamping plate 22 is provided on the mother board 1. The U-shaped clamping plate 22 is in clamping fit with the second U-shaped notch 11.

[0021] The counter pressure plate 4 includes a second board body 41, a reinforcing plate 42 and a reinforcing rib 43. Four third U-shaped notches 411 distributed in a rectangular shape are provided on the second board body 41, and the screw rod 3 passes through the third U-shaped notches 411; the reinforcing plate 42 is fixedly installed at the center of the end face of the counter pressure plate 4 facing the mother board 1, and the reinforcing rib 43 is fixed at the center of the end face of the counter pressure plate 4 facing away from the mother board 1. The reinforcing plate 42 is rectangular, and the reinforcing plate 42 directly abuts against the base of the jack. The reinforcing rib 43 is in a shape of a straight line. By providing the reinforcing plate 42 and the reinforcing rib 43, the structural strength of the connection area between the counter pressure plate 4 and the jack is increased, the compressive strength of the counter pressure plate 4 can be improved, and the overall strength of the counter pressure plate 4 can be improved.

[0022] Four first mounting holes 12 distributed in a rectangular shape are provided on the mother board 1, and the screw rod 3 is in plug-in fit with the first mounting holes 12.

[0023] The nut group includes a first nut 5, a second nut 6 and a third nut 7. The first nut 5, the second nut 6 and the third nut 7 are all threadedly installed on the screw rod 3. The first nut 5 abuts against the end face of the mother board 1 facing away from the counter pressure plate 4, the second nut 6 abuts against the end face of the counter pressure plate 4 facing the mother board 1, and the third nut 7 abuts against the end face of the counter pressure plate 4 facing away from the mother board 1. In a preferred embodiment, a fourth nut can also be provided. The fourth nut is threadedly installed on the screw rod 3 and abuts against the third nut 7 to play a role in preventing loosening.

[0024] The mother board 1, the daughter board 2 and the counter pressure plate 4 are all made of steel structure. Each part of the mother board 1, the daughter board 2, the screw rod 3, the counter pressure plate 4 and the nut group is an independent detachable unit, which is convenient for disassembly, assembly and transportation.

[0025] The mother board 1 and the counter pressure plate 4 are connected together by nuts and the screw rod 3 to form an equilateral rectangle; by matching daughter boards 2 of different specifications with the mother board 1, couplings of different specifications can be applied; the position of the counter pressure plate 4 is adjusted by using the second nut 6 and the third nut 7 to realize the adjustable function of the device. It can be used after being assembled first during use, or it can also be adjusted and used while assembling.

[0026] In use, the U-shaped clamping plate 22 is snapped into the second U-shaped notch 11 to connect the sub-board 2 to the mother board 1. Then, the coupling with a shaft is snapped into the first U-shaped notch 211, the jack base is abutted against the reinforcing plate 42, the telescopic end of the jack extends out and abuts against the shaft, and the unmounting of the coupling is achieved by using the reaction force generated by the jack.

[0027] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0028] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed. However, it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A detachable puller device, characterized in that: The invention comprises a motherboard (1), a sub-board (2), a screw rod (3) and a back pressure plate (4); the motherboard (1) and the back pressure plate (4) are connected via the screw rod (3); a nut group for adjusting the distance between the motherboard (1) and the back pressure plate (4) is mounted on the screw rod (3); the sub-board (2) is located between the motherboard (1) and the back pressure plate (4); the sub-board (2) comprises a first plate body (21) and a U-shaped clamping plate (22) fixed on one end surface of the first plate body (21); the first plate body (21) is in abutment with the motherboard (1); a first U-shaped notch (211) corresponding to the U-shaped clamping plate (22) is provided on the first plate body (21); a second U-shaped notch (11) adapted to the U-shaped clamping plate (22) is provided on the motherboard (1); the U-shaped clamping plate (22) is in clamping engagement with the second U-shaped notch (11).

2. The detachable puller device according to claim 1, characterized in that: The back pressure plate (4) comprises a second plate body (41), the second plate body (41) being provided with four third U-shaped notches (411) distributed in a rectangular shape, and the screw rod (3) passes through the third U-shaped notches (411).

3. The detachable puller device according to claim 2, characterized in that: The motherboard (1) is provided with four first mounting holes (12) distributed in a rectangular shape, and the screw rods (3) are plugged into and matched with the first mounting holes (12).

4. The detachable puller device according to claim 3, characterized in that: The nut group comprises a first nut (5), a second nut (6) and a third nut (7); the first nut (5), the second nut (6) and the third nut (7) are all threadedly mounted on the screw rod (3); the first nut (5) abuts against the end surface of the motherboard (1) facing away from the back pressure plate (4); the second nut (6) abuts against the end surface of the back pressure plate (4) facing the motherboard (1); and the third nut (7) abuts against the end surface of the back pressure plate (4) facing away from the motherboard (1).

5. The detachable puller device according to claim 2, characterized in that: The back pressure plate (4) further comprises a reinforcing plate (42), wherein the reinforcing plate (42) is fixedly mounted at the center of the end surface of the back pressure plate (4) facing the motherboard (1).

6. The detachable puller device according to claim 5, characterized in that: The back pressure plate (4) further comprises a reinforcing rib (43), wherein the reinforcing rib (43) is fixed at the center of the end surface of the back pressure plate (4) facing away from the motherboard (1).

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