CN214818230U

CN214818230U - Internal combustion engine piston extracting tool

Info

Publication number: CN214818230U
Application number: CN202023264173.4U
Authority: CN
Inventors: 邹斌; 王自飞; 喻书凯
Original assignee: Taihu Power Technology Wuhan Co ltd
Current assignee: Taihu Power Technology Wuhan Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-23
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a disassembling tool for a piston of an internal combustion engine, wherein a concave cavity is arranged on the upper end surface of the piston, a groove is arranged on the side wall of the concave cavity, the disassembling tool comprises a handle and a tool main body, and a vertical channel is arranged on the tool main body; the shape of the outer edge of the tool body is matched with the shape of the concave cavity of the piston; the position corresponding with the recess of piston in the instrument main part is equipped with two horizontal passageways that link up the instrument main part, two horizontal passageways intersect in vertical passageway department, be equipped with the bolt in the horizontal passageway, the recess of bolt head orientation piston, the cover is equipped with the spring on the bolt pole, the other end of spring is equipped with the screw, the screw head is towards vertical passageway, when the pole portion of handle inserts in the vertical passageway, the pole portion extrusion screw head of handle makes its recess direction removal towards the piston in the horizontal passageway, thereby release the horizontal passageway with the bolt head and get into in the recess. Use the utility model discloses piston in the internal-combustion engine can be dismantled fast to the extracting tool, simple structure, and convenient to use has improved work efficiency.

Description

Internal combustion engine piston extracting tool

Technical Field

The utility model belongs to the technical field of the internal-combustion engine, in particular to internal-combustion engine piston extracting tool.

Background

During engine maintenance, it is often necessary to disassemble the piston. Currently, the method generally adopted is that an operator inserts a hand into the crankcase below the piston and pushes the piston out of the cylinder upwards by means of a wooden stick and the like. The method is very unsafe and has high labor intensity, and particularly, when the piston bites the cylinder, the piston is clamped in the cylinder, and the piston is very difficult to disassemble.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an internal combustion engine piston disassembling tool with simple structure and convenient use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a kind of internal-combustion engine piston extracting tool, the upper end of the piston has cavities, the sidewall of the said cavity has two cylindrical grooves, the said extracting tool includes hand grip and tool body, have vertical channel on the said tool body to make the pole of the said hand grip insert in the said vertical channel just vertically; the shape of the outer edge of the tool body is matched with that of the cavity of the piston, so that the tool body can be just placed into the cavity of the piston;

two horizontal channels which penetrate through the tool main body are arranged on the tool main body at the positions corresponding to the grooves of the piston, the two horizontal channels are intersected at the vertical channel, a bolt is arranged in the horizontal channel, the bolt head of the bolt faces the groove of the piston, the shape of the bolt head is matched with that of the groove, so that the bolt head can be just inserted into the groove, a spring is sleeved on a bolt rod of the bolt, a screw is arranged at the other end of the spring, the screw head of the screw faces the vertical channel, when the rod part of the handle is inserted into the vertical channel, the rod part of the handle extrudes the screw head of the screw to enable the screw head to move towards the groove direction of the piston in the horizontal channel, thereby pushing the head of the bolt out of the horizontal channel into the recess of the piston.

Furthermore, an internal thread is arranged in a bolt rod of the bolt, an external thread matched with the internal thread on the bolt rod is arranged on a screw rod of the screw, and the bolt is in threaded connection with the screw.

Furthermore, a step is arranged on the inner wall of the horizontal channel, when the bolt is inserted into the horizontal channel, the head of the bolt abuts against one end of the step, the spring and the screw are inserted from the other end of the horizontal channel, the other end of the step abuts against one end of the spring, and the other end of the spring abuts against the screw head of the screw.

Furthermore, the tail end of the rod part of the handle is provided with an external thread, an internal thread is arranged at a position corresponding to the inner wall of the vertical channel of the tool main body, and the rod part of the handle is in threaded connection with the vertical channel of the tool main body.

Furthermore, a closing-up inclined plane section is arranged at the joint of the external thread section of the rod part of the handle and the rod part, and a closing-up step is arranged at the corresponding position of the inner wall of the vertical channel of the tool main body.

Furthermore, the handle is provided with a rotating handle which is fixedly connected with the rod part.

Furthermore, a limit concave ridge or a limit convex ridge is arranged in the concave cavity of the piston, and a limit convex ridge or a limit concave ridge matched with the outer edge of the tool main body is arranged on the outer edge of the tool main body.

The beneficial effects of the utility model reside in that: use the utility model discloses piston in the internal-combustion engine can be dismantled fast to the extracting tool, simple structure, and convenient to use has improved work efficiency.

Drawings

FIG. 1 is a schematic illustration of a piston configuration for an internal combustion engine;

FIG. 2 is a perspective view of the removal tool in an operative position;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a perspective view of the tool body;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the handle structure;

FIG. 7 is a schematic view of the structure of the handle not inserted into the tool body;

FIG. 8 is a schematic view of the structure of the handle inserted into the tool body;

FIG. 9 is an enlarged partial exploded view of the latch, spring and screw;

wherein: 1. a handle; 11. a rod portion; 111. a closing slope section; 12. turning a handle; 2. a tool body; 21. a vertical channel; 211. a closing step; 22. a horizontal channel; 221. a step; 3. a bolt; 31. a plug pin head; 32. a latch rod; 4. a spring; 5. a screw; 51. a screw head; 52. a screw; 6. a piston; 61. a concave cavity; 62. and (4) a groove.

Detailed Description

To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific embodiments. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims.

As shown in fig. 1-9, the utility model discloses a tool for detaching a piston of an internal combustion engine is suitable for detaching a piston of an internal combustion engine, a cavity 61 is arranged on the upper end surface of the piston 6, and two cylindrical grooves 62 are arranged on the side wall of the cavity 61. The cavity 61 is cylindrical or has the shape of a limiting concave ridge or a limiting convex ridge. Preferably heart shaped, as shown in figure 1 for the piston.

The utility model discloses a disassembling tool comprises a handle 1 and a tool body 2, wherein the tool body 2 is provided with a vertical channel 21, so that a rod part 11 of the handle 1 can be just vertically inserted into the vertical channel 21; the shape of the outer edge of the tool body 2 matches the shape of the cavity 61 of the piston 6 so that the tool body 2 can be placed just inside the cavity 61 of the piston 6.

Two horizontal channels 22 penetrating through the tool body 2 are arranged at positions, corresponding to the grooves 62 of the piston 6, on the tool body 2, the two horizontal channels 22 are intersected at the vertical channel 21, the bolt 3 is arranged in the horizontal channel 22, the bolt head 31 of the bolt 3 faces the grooves 62 of the piston 6, the shape of the bolt head 31 is matched with that of the grooves 62 to enable the bolt head 31 to be just inserted into the grooves 62, the bolt rod 32 of the bolt 3 is sleeved with the spring 4, the other end of the spring 4 is provided with the screw 5, the screw head 51 of the screw 5 faces the vertical channel 21, when the rod part 11 of the handle 1 is inserted into the vertical channel 21, the rod part 11 of the handle 1 extrudes the screw head 51 of the screw 5 to enable the screw head to move towards the grooves 62 of the piston 6 in the horizontal channel 22, and accordingly the bolt head 31 of the bolt 3 is pushed out of the horizontal channel 22 to enter the grooves 62 of the piston 6.

Preferably, the cavity 61 of the piston 6 is provided with a limit concave ridge or a limit convex ridge, and the outer edge of the tool body 2 is provided with a limit convex ridge or a limit concave ridge matched with the limit convex ridge or the limit convex ridge.

In use, when the cavity 61 is cylindrical, after the tool body 2 is placed in the cavity 61, the tool body 2 is rotated to align the head 31 of the pin on the tool body 2 with the recess 62 on the piston 6. When the cavity 61 is in other shapes with limiting structures, the tool body 2 is placed in the cavity 61, and the limiting structures matched with each other enable the direction in which the tool body 2 is placed to just enable the plug pin head 31 to be aligned with the groove 62 without rotating to find the position.

Furthermore, the bolt rod 32 of the bolt 3 is internally provided with an internal thread, the screw rod 52 of the screw 5 is provided with an external thread matched with the internal thread on the bolt rod 32, and the bolt 3 is in threaded connection with the screw 5.

When the tool is installed, the plug head 31 of the plug 3 faces outwards, the plug rod 32 faces inwards, the plug head 31 is inserted into the horizontal channel 22 from one end, close to the groove 62, of the horizontal channel 22 of the tool body 2, the plug head 31 abuts against the step 221, and the plug 3 is inserted completely; then the spring 4 and the screw 5 are inserted into the horizontal channel 22 from the end far away from the groove 62, and the screw rod 52 of the screw 5 is inserted into the bolt rod 32 inwards; and adjusting the screw head 51 of the screw 5 to enable the screw rod 52 to be in threaded connection with the bolt rod 32, and completing the installation of the disassembling tool.

Furthermore, a step 221 is arranged on the inner wall of the horizontal channel 22, when the bolt 3 is inserted into the horizontal channel 22, the bolt head 31 of the bolt 3 abuts against one end of the step 221, the spring 4 and the screw 5 are inserted from the other end of the horizontal channel 22, the other end of the step 221 abuts against one end of the spring 4, and the other end of the spring 4 abuts against the screw head 51 of the screw 5. The step 221 serves as a limit so that the plug pin 3 does not slide deep into the horizontal channel 22.

Furthermore, the end of the rod part 11 of the handle 1 is provided with an external thread, the inner wall of the vertical channel 21 of the tool body 2 is provided with an internal thread at a corresponding position, and the rod part 11 of the handle 1 is in threaded connection with the vertical channel 21 of the tool body 2.

Furthermore, a closing slope section 111 is arranged at the connection position of the external thread section of the rod part 11 of the handle 1 and the rod part 11, and a closing step 211 is arranged at the corresponding position of the inner wall of the vertical channel 21 of the tool body 2. The closing slope section 111 slantingly presses the screw head 51 of the screw 5 in the descending process of the handle 1, so that the screw 5 moves towards the groove 62 of the piston 6, the spring 4 is pressed, and the bolt head 31 of the bolt 3 moves towards the groove 62 of the piston 6 and enters the groove 62. The matching design of the closing-in inclined plane section 111 and the closing-in step 211 enables the handle 1 to be more easily extruded to the screw head 51 of the screw 5 in the descending process, so that the disassembly efficiency is improved.

Furthermore, the handle 1 is provided with a rotating handle 12, and the rotating handle 12 is fixedly connected with the rod part 11. The structure of the handle 1 facilitates rotation of the shaft portion 11, making it easier to insert the handle 1 into the tool body 2.

The mounting process of the disassembling tool comprises the following steps: the bolt head 31 of the bolt 3 faces outwards, the bolt rod 32 faces inwards, the end, close to the groove 62, of the horizontal channel 22 of the tool body 2 is inserted into the horizontal channel 22, the end, far away from the groove 62, of the horizontal channel 22 is sequentially inserted into the spring 4 and the screw 5, the screw rod 52 of the screw 5 is inserted inwards into the bolt rod 32, and the screw head 51 of the screw 5 is adjusted to enable the screw rod 52 to be in threaded connection with the bolt rod 32.

The working process of the disassembling tool comprises the following steps: firstly, the dismounting tool is mounted, then the handle 1 is inserted into the vertical channel 21 of the tool main body 2, the rod part 11 is twisted clockwise to enable the handle 1 to move downwards and extrude the screw 5 by means of the closing slope section 111, and the bolt head 31 of the bolt 3 is driven to move towards the groove 62 of the piston 6 and enter the groove 62. Pulling handle 1 afterwards, making handle 1 drive whole extracting tool and piston 6 upward movement and cylinder body separation, after the dismantlement is finished, anticlockwise rotation pole portion 11 makes handle 1 withdraw from in the tool body 2, adjusting screw 5, bolt head 31 of bolt 3 removes to horizontal channel 22 through the reaction force of spring 4, again with extracting tool and piston 6 separation, extracting tool can used repeatedly.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A piston dismounting tool for an internal combustion engine, wherein a cavity (61) is arranged on the upper end surface of a piston (6), two cylindrical grooves (62) are arranged on the side wall of the cavity (61), and the tool is characterized in that:

the disassembling tool comprises a handle (1) and a tool main body (2), wherein the tool main body (2) is provided with a vertical channel (21) so that a rod part (11) of the handle (1) can be just vertically inserted into the vertical channel (21); the shape of the outer edge of the tool body (2) is matched with the shape of the cavity (61) of the piston (6) so that the tool body (2) can be just placed into the cavity (61) of the piston (6);

the tool body (2) is provided with two horizontal channels (22) which are communicated with each other and correspond to the grooves (62) of the piston (6), the horizontal channels (22) are intersected with the vertical channels (21), a bolt (3) is arranged in each horizontal channel (22), a bolt head (31) of the bolt (3) faces towards the grooves (62) of the piston (6), the shape of the bolt head (31) is matched with that of the grooves (62) to enable the bolt head (31) to be just inserted into the grooves (62), a spring (4) is sleeved on a bolt rod (32) of the bolt (3), the other end of the spring (4) is provided with a screw (5), a screw head (51) of the screw (5) faces towards the vertical channels (21), and when the rod part (11) of the handle (1) is inserted into the vertical channels (21), the rod part (11) of the handle (1) presses the screw head (51) of the screw (5) to move in the horizontal channel (22) towards the groove (62) of the piston (6), so that the bolt head (31) of the bolt (3) is pushed out of the horizontal channel (22) into the groove (62) of the piston (6).

2. A tool for removing a piston from an internal combustion engine as set forth in claim 1, wherein: the bolt is characterized in that internal threads are arranged in a bolt rod (32) of the bolt (3), external threads matched with the internal threads on the bolt rod (32) are arranged on a screw rod (52) of the screw (5), and the bolt (3) is in threaded connection with the screw (5).

3. A tool for removing a piston from an internal combustion engine as set forth in claim 1, wherein: be equipped with step (221) on the inner wall of horizontal channel (22), bolt (3) insert when horizontal channel (22) is interior bolt head (31) of bolt (3) support and lean on the one end of step (221), follow the other end of horizontal channel (22) inserts spring (4) and screw (5), the other end of step (221) supports and leans on the one end of spring (4), the other end of spring (4) supports and leans on screw head (51) of screw (5).

4. A tool for removing a piston from an internal combustion engine as set forth in claim 1, wherein: the tool is characterized in that the tail end of a rod part (11) of the handle (1) is provided with an external thread, an internal thread is arranged at a position corresponding to the inner wall of a vertical channel (21) of the tool main body (2), and the rod part (11) of the handle (1) is in threaded connection with the vertical channel (21) of the tool main body (2).

5. An internal combustion engine piston removal tool as set forth in claim 4, wherein: the handle is characterized in that a closing-up inclined plane section (111) is arranged at the joint of an external thread section of a rod part (11) of the handle (1) and the rod part (11), and a closing-up step (211) is arranged at the corresponding position of the inner wall of a vertical channel (21) of the tool main body (2).

6. A tool for removing a piston from an internal combustion engine as set forth in claim 1, wherein: the handle (1) is provided with a rotating handle (12), and the rotating handle (12) is fixedly connected with the rod part (11).

7. A tool for removing a piston from an internal combustion engine as set forth in claim 1, wherein: and a limiting concave ridge or a limiting convex ridge is arranged in the concave cavity (61) of the piston (6), and a limiting convex ridge or a limiting concave ridge matched with the tool main body is arranged on the outer edge of the tool main body (2).