CN211819684U

CN211819684U - Split piston assembly based on bolt

Info

Publication number: CN211819684U
Application number: CN202020150407.3U
Authority: CN
Inventors: 王艳利; 李世清; 李新
Original assignee: Suqian Yiyou Industry And Trade Co ltd
Current assignee: Suqian Yiyou Industry And Trade Co ltd
Priority date: 2020-02-03
Filing date: 2020-02-03
Publication date: 2020-10-30
Anticipated expiration: 2030-02-03

Abstract

The utility model discloses a components of a whole that can function independently piston assembly based on bolt, it includes: piston base member, key seat, bolt and prevent the expander, piston base member inner wall bottom symmetry is provided with the constant head tank that corresponds with the key seat, the key seat sets up in the constant head tank and downwardly extending, piston base member bottom surface indent is provided with and prevents the annular that the expander corresponds, prevent that the expander sets up in the annular, the bolt sets up on the key seat and extends to piston base member and prevents in the expander. Components of a whole that can function independently piston assembly based on bolt, utilize the constant head tank to carry out the location on key seat upper portion to utilize the bolt to realize key seat, piston base member and prevent the series connection of expander, carry out the key seat and prevent the fixed of expander, avoid preventing the problem of droing of expander, the structure is succinct, the cost of processing is low, the equipment is more convenient with the dismantlement, is favorable to the reuse of key seat and expander after the piston base member damages.

Description

Split piston assembly based on bolt

Technical Field

The utility model relates to a piston technical field especially relates to a components of a whole that can function independently piston assembly based on bolt.

Background

The piston of the engine drives the connecting rod to drive the crankshaft to rotate through the pin shaft, so that the piston occupies an extremely important position in the operation process of the engine. The piston is made of various materials, wherein the aluminum alloy piston has light dead weight, is beneficial to reducing energy consumption and is widely used.

The aluminum alloy piston has high thermal expansion coefficient, is easy to expand in a high-temperature environment, accelerates the abrasion of the cylinder and the piston, and reduces the service life of an engine and the piston. Part of the aluminum alloy piston resists thermal deformation by embedding an anti-expansion material, but the anti-expansion material brings difficulty to casting of the aluminum alloy piston, and is difficult to disassemble and recycle after being damaged. The piston adopting the split assembly structure can be disassembled and recycled after the piston is damaged, but the piston adopting the split assembly structure is complex in structure, high in processing cost, not beneficial to quick assembly, disassembly and decomposition and needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a components of a whole that can function independently piston assembly based on bolt simplifies the structure, promotes the convenience of equipment and dismantlement.

To achieve the purpose, the utility model adopts the following technical proposal:

a split plug-based piston assembly comprising: piston base member, key seat, bolt and prevent the expander, piston base member inner wall bottom symmetry is provided with the constant head tank that corresponds with the key seat, the key seat sets up in the constant head tank and downwardly extending, piston base member bottom surface indent is provided with and prevents the annular that the expander corresponds, prevent that the expander sets up in the annular, the bolt sets up on the key seat and extends to piston base member and prevents in the expander.

And the back of the pin seat is provided with a blind hole corresponding to the plug pin.

Wherein, bolt and blind hole interference fit or adopt screw thread mode cooperation.

The number of the blind holes on the back of the pin boss is 1-2.

The pin seat is provided with a pin shaft mounting hole, and the pin shaft mounting hole is provided with a clamp spring mounting groove.

Wherein, be provided with the through-hole that corresponds with the bolt in the piston base member.

Wherein, the excircle of the piston base body is provided with a gas ring groove and an oil ring groove which are positioned above the through hole.

The utility model has the advantages that: the utility model provides a components of a whole that can function independently piston assembly based on bolt utilizes the constant head tank to carry out the location on key seat upper portion to utilize the bolt to realize key seat, piston base member and prevent the series connection of expander, carry out the fixed of key seat and prevent the expander, avoid preventing the problem that drops of expander, the structure is succinct, and the cost of processing is low, and the equipment is more convenient with the dismantlement, is favorable to the reuse of key seat and prevent the expander after the piston base member damages.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solution of the present invention is further explained by the specific embodiment with reference to fig. 1.

A split plug-based piston assembly as shown in fig. 1, comprising: piston base member 1, key seat 8, bolt 10 and prevent expander 4, 1 inner wall bottom symmetry of piston base member is provided with the constant head tank 3 that corresponds with key seat 8, key seat 8 sets up in constant head tank 3 and downwardly extending, utilizes constant head tank 3 to carry out the location on key seat 8 upper portion, and the equipment is convenient.

The piston base member 1 bottom surface indent is provided with the annular 5 that corresponds with preventing expander 4, prevent expander 4 and set up in annular 5, prevent that expander 4 adopts the iron-nickel alloy material of low expansion coefficient material to make, and the inflation when being heated is little, promotes the expansion effect of preventing of 1 skirt part of piston base member.

Bolt 10 sets up on key seat 8 and extends to piston base member 1 and in preventing expander 4, be provided with the through-hole 11 that corresponds with bolt 10 in the piston base member 1, conveniently utilize bolt 10 to realize key seat 8, piston base member 1 and prevent the series connection of expander 4, carry out key seat 8 and prevent expander 4's fixed, avoid preventing expander 4's the problem of droing, the structure is succinct, the cost of processing is low, it is more convenient to assemble and dismantle, is favorable to the reuse of key seat 8 and expander 4 behind the piston base member 1 damage.

As shown in fig. 1, the back of the pin seat 8 is provided with a blind hole 6 corresponding to the plug pin 10, and the plug pin 10 is in interference fit with the blind hole or in threaded fit, so that the plug pin 10 is fixed on the back of the pin seat 8. The blind hole quantity at 8 backs of key seat is 2, adopts two bolts 10 to carry out the fixed of key seat 8, and structural stability is high.

The pin shaft mounting hole 7 is formed in the pin base 8, so that the pin shaft can be conveniently mounted, the clamp spring mounting groove 9 is formed in the pin shaft mounting hole 7, a clamp spring is mounted, the end portion of the pin shaft is limited through the clamp spring, and therefore axial limiting of the pin base 8 is achieved. The gas ring groove 2 and the oil ring groove 12 which are positioned above the through hole 11 are arranged on the excircle of the piston base body 1, so that the gas ring and the oil ring can be conveniently installed.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A split piston assembly based on a bolt, comprising: piston base member, key seat, bolt and prevent the expander, piston base member inner wall bottom symmetry is provided with the constant head tank that corresponds with the key seat, the key seat sets up in the constant head tank and downwardly extending, piston base member bottom surface indent is provided with and prevents the annular that the expander corresponds, prevent that the expander sets up in the annular, the bolt sets up on the key seat and extends to piston base member and prevents in the expander.

2. The split plug pin-based piston assembly as claimed in claim 1, wherein the back surface of the pin holder is provided with a blind hole corresponding to the plug pin.

3. The split plug pin-based piston assembly as claimed in claim 2, wherein the plug pin is interference fit or threaded into the blind bore.

4. The split piston assembly based on the plug pin of claim 2, wherein the number of the blind holes on the back surface of the pin boss is 1-2.

5. The split piston assembly based on a pin of claim 1, wherein a pin shaft mounting hole is provided in the pin boss, and a snap spring mounting groove is provided in the pin shaft mounting hole.

6. The split plug-based piston assembly as claimed in claim 1, wherein the piston base has a through-hole formed therein corresponding to the plug.

7. The split plug-based piston assembly as claimed in claim 6, wherein the piston base body has an outer circumference provided with a gas ring groove and an oil ring groove above the through-hole.