CN221135731U - Diesel engine piston dismounting device - Google Patents
Diesel engine piston dismounting device Download PDFInfo
- Publication number
- CN221135731U CN221135731U CN202322774991.6U CN202322774991U CN221135731U CN 221135731 U CN221135731 U CN 221135731U CN 202322774991 U CN202322774991 U CN 202322774991U CN 221135731 U CN221135731 U CN 221135731U
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- Prior art keywords
- ring
- open
- inclined surface
- connecting rod
- diesel engine
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- 238000002485 combustion reaction Methods 0.000 description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a diesel engine piston dismounting device, which comprises a connecting rod, a plurality of edge opening rings and a locking piece, wherein the connecting rod is provided with a first inclined surface which extends along the length direction and inclines to one side; a plurality of split rings disposed along an outer circumferential side of the connecting rod, the split rings having a second inclined surface attached to the first inclined surface, the split rings being capable of sliding back and forth along the first inclined surface through the second inclined surface; the locking piece is in the connecting rod in a threaded connection mode, and the locking piece is located above the open-edge ring and used for locking the open-edge ring at a corresponding position on the first inclined surface. According to the utility model, the axial distance between the edge opening ring and the connecting rod can be adjusted by utilizing the tightness of the locking piece, so that the edge opening ring moves back and forth along the first inclined plane, and further the edge opening ring can expand or contract in the radial direction, the operation is convenient, the force of the screw-connection locking piece is easy to control, and the piston is not easy to damage.
Description
Technical Field
The utility model relates to the technical field of disassembly and assembly of diesel engines, in particular to a disassembly and assembly device for a piston of a diesel engine.
Background
The MTU diesel engine piston is installed in the cylinder sleeve, if the MTU diesel engine piston needs to be disassembled and assembled, the MTU diesel engine piston needs to be fixed by a tool and taken up from the cylinder sleeve for disassembly, the existing piston disassembling tool consists of two open-side semicircular rings, a positive threaded rod and a reverse threaded rod, and a hanging ring, the open-side semicircular rings can be stretched by rotating the threaded rod through a wrench, and the MTU diesel engine piston can be disassembled from the cylinder sleeve until the open-side semicircular rings support the cavity wall of a piston top combustion chamber. The dynamics when having the tight threaded rod of tightening during the operation can not be controlled, can harm the piston when too tight, and the piston can drop when too loose.
Disclosure of utility model
The utility model aims to solve the technical problems that: the existing disassembly and assembly tool is difficult to grasp the strength and is easy to damage the piston.
In order to solve the technical problems, the utility model provides a diesel engine piston dismounting device, comprising:
a connecting rod having a first inclined surface extending in a length direction thereof and inclined to one side;
A plurality of split rings disposed along an outer circumferential side of the connecting rod, the split rings having a second inclined surface attached to the first inclined surface, the split rings being capable of sliding back and forth along the first inclined surface through the second inclined surface; and
The locking piece is in the connecting rod in a threaded connection mode, and the locking piece is located above the open-edge ring and used for locking the open-edge ring at a corresponding position on the first inclined surface.
In some embodiments, the side wall of each open-sided ring is provided with a mounting groove, and a plurality of mounting grooves jointly form a circular ring-shaped mounting groove group;
The diesel engine piston dismounting device further comprises an elastic restoring piece, wherein the elastic restoring piece is arranged in the mounting groove group so as to provide elasticity to enable the open edge ring to reset.
In some embodiments, the elastic return is an O-ring.
In some embodiments, the open-sided ring includes an upper-sided ring, a middle-sided ring, and a lower-sided ring that are sequentially disposed along a height direction of the open-sided ring, the upper-sided ring, the middle-sided ring, and the lower-sided ring are integrally formed, a diameter of the upper-sided ring is larger than a diameter of the lower-sided ring, and a diameter of the lower-sided ring is larger than a diameter of the middle-sided ring to define the mounting groove.
In some embodiments, the open-sided ring includes a first side surface and a second side surface disposed parallel to a diameter direction of the open-sided ring, and an included angle is formed between a plane in which the first side surface is located and a plane in which the second side surface is located.
In some embodiments, the included angle is 75 ° -90 °.
In some embodiments, the first inclined surface is inclined at an angle of 30 ° to 50 °.
In some embodiments, the connecting rod is provided with a lifting ring.
In some embodiments, a gasket is disposed between the locking member and the split ring.
In some embodiments, the locking member has a force applying portion recessed inward from an outer sidewall of the locking member.
Compared with the prior art, the diesel engine piston dismounting device has the beneficial effects that:
When the embodiment of the utility model is used, the open-edge ring is arranged in the piston top combustion chamber of the diesel engine, the open-edge ring can slide to a designated position along the first inclined plane by utilizing the second inclined plane, at the moment, the open-edge ring is clamped into the shoulder of the chamber wall of the combustion chamber, the locking piece is screwed to lock the position of the open-edge ring, and the piston is disassembled by utilizing the connecting rod; then adjust the locking piece, release the locking to the open side ring for open side ring can utilize the second inclined plane to slide to the assigned position along first inclined plane, open side ring release the joint with combustion chamber cavity wall convex shoulder this moment, can utilize the connecting rod to take out open side ring from the piston top combustion chamber.
According to the utility model, the axial distance between the edge opening ring and the connecting rod can be adjusted by utilizing the tightness of the locking piece, so that the edge opening ring moves back and forth along the first inclined plane, and further the edge opening ring can expand or contract in the radial direction, the operation is convenient, the force of the screw-connection locking piece is easy to control, and the piston is not easy to damage.
Drawings
FIG. 1 is a cross-sectional view of a diesel engine piston mounting and dismounting device provided by an embodiment of the utility model;
FIG. 2 is a top view of a diesel engine piston mounting and dismounting device provided by an embodiment of the utility model;
In the figure, 1, a connecting rod; 11. a first inclined surface; 12. a hanging ring; 2. an open edge ring; 21. a second inclined surface; 22. a mounting groove; 23. an upper edge ring; 24. an intermediate ring; 25. a lower edge ring; 26. a first side; 27. a second side; 3. a locking piece; 31. a force application part; 4. an elastic return member; 5. a gasket.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, a diesel engine piston dismounting device according to a preferred embodiment of the present utility model is used for dismounting an MTU diesel engine piston. The diesel engine piston dismounting device comprises a connecting rod 1, a plurality of open side rings 2 and locking pieces 3; the connecting rod 1 has a first inclined surface 11 extending in the longitudinal direction thereof and inclined to one side; the plurality of split rings 2 are arranged along the outer peripheral side of the connecting rod 1, and the split rings 2 have second inclined surfaces 21 which are attached to the first inclined surfaces 11, and the split rings 2 can slide back and forth along the first inclined surfaces 11 by the second inclined surfaces 21; the locking piece 3 is in threaded connection with the connecting rod 1, and the locking piece 3 is located above the open side ring 2 and used for locking the open side ring 2 at a corresponding position on the first inclined surface 11.
When the piston top combustion chamber is used, the open side ring 2 is arranged in the piston top combustion chamber of the diesel engine, the open side ring 2 can slide to a designated position along the first inclined surface 11 by utilizing the second inclined surface 21, at the moment, the open side ring 2 is clamped into the shoulder of the cavity wall of the combustion chamber, the locking piece 3 is screwed to lock the position of the open side ring 2, and the piston is disassembled by utilizing the connecting rod 1; then, the locking piece 3 is adjusted to release the locking of the open side ring 2, so that the open side ring 2 can slide to a designated position along the first inclined surface 11 by utilizing the second inclined surface 21, and at the moment, the open side ring 2 is released from clamping connection with the shoulder of the cavity wall of the combustion chamber, and the open side ring 2 can be taken out from the combustion chamber of the piston top by utilizing the connecting rod 1.
The axial distance between the open side ring 2 and the connecting rod 1 can be adjusted by using the tightness of the locking piece 3, so that the open side ring 2 moves back and forth along the first inclined surface 11, the open side ring 2 can expand or contract in the radial direction, the operation is convenient, the force of the screw locking piece 3 is easy to control, and the piston is not easy to damage.
In this embodiment, the first position may be set as the reset position, the second position may be the clamping position, and the first position and the second position are both located on the first inclined surface 11; expansion or contraction of the open-sided ring 2 is achieved by sliding the open-sided ring 2 back and forth between the first and second positions. The first position may be a position where the split ring 2 is retracted along the first inclined surface 11 to a position where the axial distance between the split ring 2 and the connecting rod 1 is minimum; the second position is a position where the split ring 2 expands along the first inclined surface 11 to a position where the axial distance between the split ring 2 and the connecting rod 1 is maximum, and a user can adjust the expansion degree of the split ring 2 as required so that the split ring 2 is located between the first position and the second position, which is not particularly limited herein.
It will be appreciated that the sliding distance of the split ring 2 may be limited in some embodiments by a stop.
In the following embodiments, the open-sided ring 2 is described by taking 4 examples, and the open-sided ring 2 is preferably made of aluminum. When the open side ring 2 compresses tightly the combustion chamber cavity wall, the area of contact of the open side ring 2 and the combustion chamber cavity wall can be increased, so that the open side ring 2 and the combustion chamber cavity wall are uniformly stressed, the aluminum material can not damage the piston body, the piston can not be excessively compressed to damage the piston when the locking piece 3 is screwed by hands, the operation is convenient, and the working efficiency is improved. It is to be understood that the number of the open-sided ring 2 may be 3, 5 or more, and again, the number thereof is not particularly limited.
As shown in fig. 1, in some embodiments, the side wall of each open edge ring 2 has a mounting groove 22, the mounting groove 22 on each open edge ring 2 has an annular structure, and a plurality of mounting grooves 22 together form a circular ring-shaped mounting groove group; the diesel engine piston dismounting device also comprises an elastic return piece 4, wherein the elastic return piece 4 is arranged in the mounting groove group to provide elastic force to reset the open edge ring 2. When the edge opening ring 2 moves to the second position, the elastic return piece 4 plays a limiting role, so that the 4 edge opening rings 2 are limited to the second position, and the edge opening ring 2 is prevented from slipping; on the other hand, when the edge opening ring 2 needs to shrink, the elastic force of the elastic restoring piece 4 can be utilized to drive the edge opening ring 2 to restore. Preferably, the elastic return 4 is an O-ring.
As shown in fig. 1, in some embodiments, the open edge ring 2 includes an upper edge ring 23, a middle ring 24, and a lower edge ring 25 sequentially disposed along the height direction of the open edge ring 2, the upper edge ring 23, the middle ring 24, and the lower edge ring 25 are integrally formed, the upper edge ring 23 is used for contacting with a shoulder of a cavity wall of the piston top combustion chamber, and the diameter of the upper edge ring 23 is larger than that of the lower edge ring 25 so as to form an avoidance space, and interference collision is prevented when the upper edge ring 23 contacts with the shoulder of the cavity wall of the piston top combustion chamber; the lower ring 25 has a diameter larger than that of the intermediate ring 24, and defines a mounting groove 22 therebetween, and the elastic restoring member 4 is mounted in the mounting groove 22. It will be appreciated that the outer walls of the upper ring 23, the middle ring 24 and the lower ring 25 are all annular structures to fit the cavity wall of the piston top combustion chamber, the inner walls of the upper ring 23, the middle ring 24 and the lower ring 25 are second inclined surfaces 21, and the second inclined surfaces 21 are annular structures to fit the first inclined surfaces 11 of the connecting rod 1.
When the diesel engine piston dismounting device is placed in a piston top combustion chamber, the upper ring edge surface of the open edge ring 2 can be in anastomotic contact with the lower surface of the cavity wall shoulder of the piston top combustion chamber, so that the problem that a tool is loose or the open edge ring 2 cannot be clamped in the cavity wall shoulder of the combustion chamber due to too large or too small axial clearance between the open edge ring 2 and the piston top combustion chamber, so that a piston falls off is avoided, and the reliability of the diesel engine piston dismounting device is improved.
As shown in fig. 2, in some embodiments, the open-edge ring 2 includes a first side 26 and a second side 27 that are parallel to the diameter direction of the open-edge ring 2, and an included angle is formed between the plane in which the first side 26 and the plane in which the second side 27 are located, where the included angle is 75 ° -90 °, and the angle can greatly increase the contact area between the open-edge ring 2 and the combustion chamber wall, so that the open-edge ring 2 and the combustion chamber wall are uniformly stressed. Preferably, the included angle is 87 °.
In some embodiments, one end of the connecting rod 1 connected with the open-edge ring 2 has a conical structure, the conical surface of the conical structure is the first inclined surface 11, and the inclination angle of the first inclined surface 11 is 30 ° -50 °, so that the smoothness of radial expansion or contraction of the open-edge ring 2 can be better improved. Preferably, the inclination angle is 43 °.
As shown in fig. 1, in some embodiments, the connecting rod 1 is provided with a hanging ring 12, and a worker can hold the hanging ring 12 to place the open-edge ring 2 in a piston top combustion chamber of a diesel engine, and can hold the hanging ring 12 to remove the open-edge ring 2 and the piston, and then remove the open-edge ring 2 from the piston.
In some embodiments, a gasket 5 is disposed between the locking member 3 and the open edge ring 2, so as to increase the contact area between the locking member 3 and the open edge ring 2, so that the locking member 3 can lock the open edge ring 2 more firmly to prevent loosening.
As shown in fig. 2, in some embodiments, the locking member 3 has a force application portion 31 formed by recessing an outer side wall of the locking member 3 inward. The force application parts 31 are arranged at intervals around the axis of the locking piece 3, when a worker needs to lock or unlock the edge ring 2, the force application parts 31 can be used for screwing or unscrewing the locking piece 3, and the force application parts 31 provide better force application points for the worker. It can be understood that the connecting rod 1 in this embodiment has a certain rigidity, the total weight of the piston and the connecting rod 1 is about 16kg, the 4 open side rings 2 can be pressed against the chamber wall of the piston top combustion chamber by manually rotating the locking piece 3, the open side rings 2 can be expanded and supported against the chamber wall of the piston top combustion chamber by tightening torque (about 60 Nm) by a hand, the operation is convenient, the use is simple, and one person can complete.
In summary, the embodiment of the utility model provides a diesel engine piston dismounting device which has the advantages of simple structure, convenient operation, flexible and quick use, suitability for dismounting MTU diesel engine pistons, great improvement of the work efficiency of equipment repair and time saving. The diesel engine piston dismounting device can bear the weight of the piston and the connecting rod, can not damage the piston, and can independently finish dismounting work by one person, thereby improving the working efficiency, ensuring the repair quality, saving the repair cost for factories and improving the production benefit. The cost for manufacturing is low, the original available resource facilities of the factory are fully utilized, and the equipment guaranteeing capability of the factory is improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. A diesel engine piston disassembly and assembly apparatus, comprising:
a connecting rod having a first inclined surface extending in a length direction thereof and inclined to one side;
A plurality of split rings disposed along an outer circumferential side of the connecting rod, the split rings having a second inclined surface attached to the first inclined surface, the split rings being capable of sliding back and forth along the first inclined surface through the second inclined surface; and
The locking piece is in the connecting rod in a threaded connection mode, and the locking piece is located above the open-edge ring and used for locking the open-edge ring at a corresponding position on the first inclined surface.
2. The diesel engine piston assembly and disassembly device according to claim 1, wherein the side wall of each open edge ring is provided with a mounting groove, and a plurality of mounting grooves jointly form a circular mounting groove group;
The diesel engine piston dismounting device further comprises an elastic restoring piece, wherein the elastic restoring piece is arranged in the mounting groove group so as to provide elasticity to enable the open edge ring to reset.
3. The diesel piston assembly and disassembly device of claim 2, wherein the elastic return is an O-ring.
4. The diesel engine piston attaching and detaching device according to claim 2, wherein the open-sided ring includes an upper-sided ring, a middle-sided ring, and a lower-sided ring that are sequentially provided along a height direction of the open-sided ring, the upper-sided ring, the middle-sided ring, and the lower-sided ring are integrally formed, a diameter of the upper-sided ring is larger than a diameter of the lower-sided ring, and a diameter of the lower-sided ring is larger than a diameter of the middle-sided ring to define the mounting groove.
5. The diesel engine piston assembly and disassembly device according to claim 2, wherein the open-sided ring comprises a first side surface and a second side surface which are parallel to the diameter direction of the open-sided ring, and an included angle is formed between the plane of the first side surface and the plane of the second side surface.
6. The diesel piston assembly and disassembly device of claim 5, wherein the included angle is 75 ° -90 °.
7. The diesel piston assembly and disassembly device according to claim 1, wherein the first inclined surface has an inclination angle of 30 ° to 50 °.
8. The diesel piston assembly and disassembly device according to claim 1, wherein the connecting rod is provided with a hanging ring.
9. The diesel piston assembly and disassembly device of claim 1, wherein a gasket is disposed between the locking member and the split ring.
10. The diesel engine piston assembling and disassembling device according to claim 1, wherein the locking member has a biasing portion formed recessed inward from an outer side wall of the locking member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322774991.6U CN221135731U (en) | 2023-10-16 | 2023-10-16 | Diesel engine piston dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322774991.6U CN221135731U (en) | 2023-10-16 | 2023-10-16 | Diesel engine piston dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221135731U true CN221135731U (en) | 2024-06-14 |
Family
ID=91389789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322774991.6U Active CN221135731U (en) | 2023-10-16 | 2023-10-16 | Diesel engine piston dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221135731U (en) |
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2023
- 2023-10-16 CN CN202322774991.6U patent/CN221135731U/en active Active
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