Special tool for mounting piston

Abstract

The utility model relates to the technical field of tools, in particular to a special tool for piston installation, which comprises two clamping rings, the two clamping rings are rotatably connected, the arc surfaces of the clamping rings are fixedly connected with a connecting pipe, a bolt is in threaded connection in the connecting pipe, a stress application structure is arranged on the inner wall of the connecting pipe, the stress application structure comprises a stress application rod, and the stress application rod is in threaded connection with the bolt. The stress application rod is connected with the connecting pipe in a sliding mode, an inserting rod penetrates through the connecting pipe in a sliding mode, a plurality of inserting holes are formed in the surface of the stress application rod, and the size of the inserting holes is matched with the size of the inserting rod. By arranging the stress application structure, when the piston is installed, the piston is clamped by the two clamping rings, so that the diameter of the piston is reduced due to extrusion, the piston can be conveniently inserted into an engine cylinder sleeve subsequently, and the moment of force when the clamping rings clamp the piston can be adjusted by adjusting the length of the stress application rod extending out of the connecting pipe; and therefore, more labor is saved when a worker operates.

Description

Technical Field

[0001] The utility model relates to the technical field of tools, in particular to a special tool for installing a piston. Background Art

[0002] The engine piston is a key component in the internal combustion engine. It is used to convert the high-pressure gas energy generated in the combustion chamber into mechanical motion, thereby driving the engine to work. The engine piston will undergo four basic strokes during the working process: intake, compression, explosion and exhaust. Each stroke will exert different forces and pressures on the piston.

[0003] The above-mentioned and prior art technologies have the following defects: when assembling the engine, the piston needs to be installed in the cylinder liner of the engine. However, since the piston ring on the piston is elastic, the diameter of the piston ring is larger than the inner diameter of the cylinder liner in the natural state, so it is difficult to install the piston into the cylinder liner, and the operation is difficult.

[0004] Therefore, a special tool for installing a piston is proposed. Utility Model Content

[0005] The utility model aims to solve the problem that it is difficult to install the piston into the cylinder sleeve because the piston ring on the piston has elasticity and the diameter of the piston ring in a natural state is larger than the inner diameter of the cylinder sleeve, and thus a special tool for installing the piston is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a special tool for piston installation, comprising two clamping rings, the two clamping rings are rotatably connected, the arc surface of the clamping ring is fixedly connected with a connecting pipe, the inner thread of the connecting pipe is connected with a bolt, the inner wall of the connecting pipe is provided with a force structure, the force structure includes a force rod, the force rod is slidably connected to the connecting pipe, an insertion rod is slidably penetrated in the connecting pipe, and a plurality of insertion holes are opened on the surface of the force rod, and the size of the insertion holes is matched with the size of the insertion rod.

[0007] The effect achieved by the above components is: by setting up the force-adding structure, when installing the piston, the piston is clamped with the help of two clamping rings, so that the diameter of the piston becomes smaller due to extrusion, which is convenient for the subsequent insertion of the piston into the engine cylinder liner. By adjusting the length of the force-adding rod extending out of the connecting pipe, the torque when the clamping ring clamps the piston can be adjusted, thereby making it easier for the staff to operate.

[0008] Preferably, the force adding rod is a semi-cylindrical structure.

[0009] The effect achieved by the above components is that the force-adding rod with a semi-cylindrical structure can facilitate the alignment of the insertion hole and the insertion rod.

[0010] Preferably, the surface of the force adding rod is fixed with a rubber sleeve.

[0011] The effect achieved by the above components is that the rubber sleeve improves the comfort when holding the boosting rod, thereby facilitating the holding of the boosting rod.

[0012] Preferably, a plurality of anti-slip grooves are provided on the surface of the rubber sleeve.

[0013] The effect achieved by the above components is that the anti-skid groove increases the friction force on the surface of the rubber sleeve.

[0014] Preferably, one end of the insertion rod is fixedly connected to a magnetic block, and the outer wall of the connecting pipe is fixedly connected to an iron ring.

[0015] The effect achieved by the above components is: when the magnetic block contacts the iron ring, the magnetic block will be attracted to the surface of the iron ring, and the iron ring will limit the position of the magnetic block, thereby limiting the position of the insertion rod.

[0016] Preferably, a traction rope is fixedly connected to the surface of the magnetic block, and the traction rope is fixedly connected to the connecting pipe.

[0017] The effect achieved by the above components is that the traction rope reaches the limit position of the magnetic block, thereby preventing the insertion rod from being lost.

[0018] Preferably, two limiting grooves are provided on the surface of the force adding rod, a limiting block is fixedly connected to the surface of the connecting pipe, and the limiting block is slidably connected to the limiting grooves.

[0019] The effect achieved by the above components is that the cooperation between the limit block and the limit groove can prevent the force rod from falling out of the connecting pipe.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, by providing a force-adding structure, when installing the piston, the piston is clamped with the aid of two clamping rings, so that the diameter of the piston becomes smaller due to extrusion, which facilitates the subsequent insertion of the piston into the engine cylinder liner. By adjusting the length of the force-adding rod extending out of the connecting pipe, the torque when the clamping ring clamps the piston can be adjusted, thereby making it easier for workers to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the connecting pipe of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the utility model;

[0025] Figure 4 It is a schematic diagram of the local structure of the connecting pipe of the utility model.

[0026] Legend: 1. Clamp ring; 2. Connecting pipe; 3. Bolt; 4. Force structure; 41. Force rod; 42. Insert rod; 43. Socket; 44. Rubber sleeve; 45. Anti-slip groove; 46. Magnetic block; 47. Iron ring; 48. Traction rope; 49. Limit block. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0029] like Figure 1-Figure 4 As shown, the utility model provides a special tool for installing a piston, including two clamping rings 1, the two clamping rings 1 are rotatably connected, the arc surface of the clamping ring 1 is fixedly connected with a connecting pipe 2, the connecting pipe 2 is internally threaded with a bolt 3, the inner wall of the connecting pipe 2 is provided with a force structure 4, the force structure 4 includes a force rod 41, the force rod 41 is slidably connected with the connecting pipe 2, an insertion rod 42 is slidably penetrated in the connecting pipe 2, a surface of the force rod 41 is provided with a plurality of insertion holes 43, the size of the insertion hole 43 is adapted to the size of the insertion rod 42, by setting the force structure 4, when installing the piston, with the help of The two clamping rings 1 clamp the piston, so that the diameter of the piston becomes smaller due to extrusion, which is convenient for the subsequent insertion of the piston into the engine cylinder liner. By adjusting the length of the booster rod 41 extending out of the connecting pipe 2, the torque when the clamping ring 1 clamps the piston can be adjusted, so that the staff can operate more labor-saving. The booster rod 41 has a semi-cylindrical structure, and the booster rod 41 with a semi-cylindrical structure can easily align the socket 43 with the insertion rod 42. The surface of the booster rod 41 is fixed with a rubber sleeve 44, which improves the comfort when holding the booster rod 41, thereby facilitating the holding of the booster rod 41.

[0030] like Figure 2-Figure 4As shown, the surface of the rubber sleeve 44 is provided with a plurality of anti-skid grooves 45, and the anti-skid grooves 45 increase the surface friction of the rubber sleeve 44; one end of the insertion rod 42 is fixedly connected to a magnetic block 46, and the outer wall of the connecting pipe 2 is fixedly connected to an iron ring 47; when the magnetic block 46 contacts the iron ring 47, the magnetic block 46 will be sucked on the surface of the iron ring 47, and the iron ring 47 can limit the position of the magnetic block 46, thereby limiting the position of the insertion rod 42; the surface of the magnetic block 46 is fixedly connected to a traction rope 48, and the traction rope 48 is fixedly connected to the connecting pipe 2, and the traction rope 48 can limit the position of the magnetic block 46, thereby preventing the insertion rod 42 from being lost; the surface of the force rod 41 is provided with two limit grooves, and the surface of the connecting pipe 2 is fixedly connected to a limit block 49, and the limit block 49 is slidably connected to the limit groove, and the limit block 49 cooperates with the limit groove to prevent the force rod 41 from falling out of the connecting pipe 2.

[0031] The overall working principle is that when the piston needs to be installed, the force rod 41 is rotated, and the movement of the force rod 41 will drive the connecting pipe 2 to move. At this time, the rubber sleeve 44 can improve the comfort of holding the force rod 41, thereby facilitating the holding of the force rod 41, and the anti-skid groove 45 can increase the surface friction of the rubber sleeve 44. The movement of the connecting pipe 2 will drive the clamping ring 1 to move, so that the two clamping rings 1 clamp the piston. At this time, the diameter of the piston becomes smaller due to extrusion, and then the bolt 3 is rotated. When the bolt 3 is inserted into the two connecting pipes 2, the bolt 3 reaches the position of limiting the connecting pipe 2, thereby limiting the position of the clamping ring 1, making it more labor-saving for the operator. After that, the piston can be aligned with the engine cylinder sleeve and inserted into the cylinder sleeve. When it is necessary to adjust the length of the force rod 41 extending out of the connecting pipe 2, the insertion rod 42 is pulled out from the insertion hole 43. At this time, the traction rope 48 The position of the limiting magnet 46 is reached, thereby preventing the insertion rod 42 from being lost, and then the force rod 41 is slid along the inner wall of the connecting tube 2. At this time, the limit block 49 cooperates with the limit groove to prevent the force rod 41 from escaping from the connecting tube 2. After adjusting the length of the force rod 41, the insertion rod 42 is reinserted into the socket 43. The insertion rod 42 reaches the position of limiting the force rod 41. By adjusting the length of the force rod 41 extending out of the connecting tube 2, the torque when the clamping ring 1 clamps the piston can be adjusted, so that the staff can operate more labor-saving. In this process, the force rod 41 with a semi-cylindrical structure can easily align the socket 43 with the insertion rod 42. When the magnet 46 contacts the iron ring 47, the magnet 46 will be sucked on the surface of the iron ring 47, and the iron ring 47 reaches the position of limiting the magnet 46, thereby limiting the position of the insertion rod 42.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A special tool for installing a piston, comprising two clamping rings (1), characterized in that: The two clamping rings (1) are rotatably connected, the arc surface of the clamping ring (1) is fixedly connected to a connecting pipe (2), the connecting pipe (2) is internally threaded with a bolt (3), the inner wall of the connecting pipe (2) is provided with a force structure (4), the force structure (4) comprises a force rod (41), the force rod (41) is slidably connected to the connecting pipe (2), an insertion rod (42) is slidably penetrated in the connecting pipe (2), a surface of the force rod (41) is provided with a plurality of insertion holes (43), the size of the insertion holes (43) is adapted to the size of the insertion rod (42).

2. A special tool for installing a piston according to claim 1, characterized in that: The force adding rod (41) is in a semi-cylindrical structure.

3. A special tool for installing a piston according to claim 1, characterized in that: The surface of the force-adding rod (41) is fixedly covered with a rubber sleeve (44).

4. A special tool for installing a piston according to claim 3, characterized in that: The surface of the rubber sleeve (44) is provided with a plurality of anti-slip grooves (45).

5. A special tool for installing a piston according to claim 1, characterized in that: One end of the insertion rod (42) is fixedly connected to a magnetic block (46), and the outer wall of the connecting pipe (2) is fixedly connected to an iron ring (47).

6. A special tool for installing a piston according to claim 5, characterized in that: A traction rope (48) is fixedly connected to the surface of the magnetic block (46), and the traction rope (48) is fixedly connected to the connecting pipe (2).

7. A special tool for installing a piston according to claim 1, characterized in that: The surface of the force-adding rod (41) is provided with two limit grooves, and the surface of the connecting pipe (2) is fixedly connected with a limit block (49), and the limit block (49) is slidably connected with the limit grooves.

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