CN216381633U

CN216381633U - High-hardness agricultural mechanical piston

Info

Publication number: CN216381633U
Application number: CN202123098174.0U
Authority: CN
Inventors: 廖华喜; 曾利伦; 郭明飞; 田忠南; 郑远清; 吴玲慧; 曾杰
Original assignee: Funing Yuanfeng Pump Industry Co ltd
Current assignee: Funing Yuanfeng Pump Industry Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-26
Anticipated expiration: 2031-12-10

Abstract

The utility model belongs to the technical field of pistons, and aims to solve the problems that an existing agricultural mechanical piston is low in hardness, poor in wear resistance and short in service life, the whole piston needs to be replaced after being damaged, and the replaced whole piston is discarded, so that resource waste is caused; the piston is provided with the high-hardness wear-resistant sleeve, so that the hardness and the wear resistance of the piston can be effectively improved, the service life of the piston is obviously prolonged, the high-hardness wear-resistant sleeve is conveniently connected with or separated from the piston body through the arranged connecting component, the high-hardness wear-resistant sleeve is convenient to replace, resource waste is avoided, and the use cost is reduced.

Description

High-hardness agricultural mechanical piston

Technical Field

The utility model relates to the technical field of pistons, in particular to a high-hardness agricultural mechanical piston.

Background

The piston is usually used as a part which does reciprocating motion in an automobile engine cylinder body, is used for bearing gas pressure, drives a crankshaft to rotate by a connecting rod through a piston pin, and the top of the piston is also a component of a combustion chamber;

the agricultural mechanical piston mainly refers to a piston applied to an engine of agricultural equipment, the existing agricultural mechanical piston is low in hardness and poor in wear resistance, the outer peripheral surface of the existing agricultural mechanical piston is easy to damage after being used for a period of time, the service life is short, and when the outer peripheral surface of the existing agricultural mechanical piston cannot be used due to abrasion, the whole piston needs to be replaced, and the replaced whole piston is discarded, so that resource waste is caused, and improvement is needed;

in view of the above technical drawbacks, a solution is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-hardness agricultural mechanical piston, which can effectively improve the hardness and the wear resistance of the piston and remarkably prolong the service life of the piston by arranging a high-hardness wear-resistant sleeve, is convenient to connect or separate the high-hardness wear-resistant sleeve with a piston body by arranging a connecting assembly, does not need to replace the whole piston and abandon an old piston when the peripheral surface of the piston is worn and cannot be used, and solves the problems that the existing agricultural mechanical piston is low in hardness, poor in wear resistance and short in service life, needs to replace the whole piston after being damaged, abandons the replaced whole piston and wastes resources.

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

a high-hardness agricultural mechanical piston comprises a piston body and a high-hardness wear-resistant sleeve, wherein a connecting seat is fixedly arranged at the bottom of the piston body through a bolt, a connecting shaft is arranged on the connecting seat, a connecting assembly is arranged on the piston body, and the piston body and the high-hardness wear-resistant sleeve are fixed through the connecting assembly;

the high-hardness wear-resistant sleeve comprises an outer sleeve portion and a pressing portion, the pressing portion is horizontally arranged, the outer sleeve portion is vertically arranged, the outer sleeve portion is fixedly connected with the pressing portion, the pressing portion presses the upper surface of the piston body downwards, and the outer sleeve portion is sleeved on the piston body.

Furthermore, a first stepped groove is formed in the inner side of the bottom of the outer sleeve portion, a second annular block is fixedly mounted on the outer side of the bottom of the piston body, and the second annular block is pressed into the first stepped groove.

Furthermore, a second stepped groove is formed in the inner side of the bottom of the pressing portion, a first annular block is fixedly mounted in the pressing groove, and the first annular block is pressed into the second stepped groove.

Furthermore, an annular sealing groove is formed in the pressing portion and located above the second stepped groove, a circular ring is fixedly mounted at the top of the first annular block and inserted into the annular sealing groove.

Furthermore, the connecting assembly comprises an adjusting nut, a rotating shaft, two-way studs, a positioning cylinder and a guide block, the rotating shaft is vertically arranged and is rotatably connected with the piston body, the adjusting nut is installed at the top end of the rotating shaft, symmetrically arranged accommodating grooves are horizontally formed in the piston body, the two-way studs are rotatably connected with the piston body, and two ends of each two-way stud extend into the two groups of accommodating grooves;

the piston comprises a piston body and is characterized in that a cavity is formed in the piston body, the middle of a bidirectional stud is located in the cavity, a rotating shaft is meshed with the bidirectional stud through a bevel gear, a positioning cylinder is slidably mounted in the accommodating groove through a guide block, a threaded groove is formed in the positioning cylinder, the bidirectional stud is in threaded connection with the positioning cylinder, a fixing groove is formed in the inner side of the outer sleeve portion, and one end, far away from the piston body, of the positioning cylinder penetrates out of the accommodating groove and is inserted into the fixing groove.

Furthermore, a plurality of groups of positioning holes are formed in the pressing part, a plurality of groups of positioning vertical rods are fixedly mounted in the pressing groove, and the positioning vertical rods upwards penetrate through the positioning holes.

Furthermore, the outer peripheral surface of the outer sleeve part is provided with an oil ring groove, a gas ring groove and a lining ring groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the high-hardness wear-resistant sleeve is arranged, so that the hardness and wear resistance of the piston can be effectively improved, the piston can be prevented from being damaged, and the service life of the piston is obviously prolonged;

2. according to the utility model, the second annular block is pressed into the first stepped groove, the first annular block is pressed into the second stepped groove, and the circular ring is inserted into the annular sealing groove, so that the sealing property of the joint of the second annular block and the first annular block is improved, the use effect is improved, and the positioning during installation is realized by arranging the positioning vertical rod and the positioning hole, so that the installation efficiency is improved;

3. according to the utility model, the connecting component is arranged, so that the high-hardness wear-resistant sleeve can be conveniently connected with or separated from the piston body, the high-hardness wear-resistant sleeve can be conveniently replaced, when the peripheral surface of the piston is worn and cannot be used, the whole piston does not need to be replaced, an old piston is not discarded, the resource waste is reduced, and the use cost is reduced.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings;

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the piston body of FIG. 1;

FIG. 3 is a schematic structural view of the high hardness wear-resistant sleeve of FIG. 1;

FIG. 4 is a schematic view of the connecting assembly of FIG. 2;

FIG. 5 is a top view of the piston body of the present invention;

FIG. 6 is a bottom view of the outer race section of the present invention;

fig. 7 is a plan view of the pressing portion of the present invention.

Reference numerals: 1. a piston body; 2. a high hardness wear resistant sleeve; 11. pressing the groove downwards; 12. a first ring block; 13. a circular ring; 14. positioning the vertical rod; 15. a connecting assembly; 16. a second ring block; 17. a connecting seat; 18. a connecting shaft; 151. adjusting the screw cap; 152. a rotating shaft; 153. a bi-directional stud; 154. a positioning cylinder; 155. a guide block; 156. a receiving groove; 157. a thread groove; 21. an outer race section; 22. a pressing part; 211. a first step groove; 212. an oil ring groove; 213. a gas ring groove; 214. a lining ring groove; 215. fixing grooves; 221. a second stepped groove; 222. an annular seal groove; 223. and (7) positioning the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1-4, the high-hardness agricultural mechanical piston provided by the utility model comprises a piston body 1 and a high-hardness wear-resistant sleeve 2, wherein a connecting seat 17 is fixedly installed at the bottom of the piston body 1 through bolts, a connecting shaft 18 is installed on the connecting seat 17, a connecting assembly 15 is installed on the piston body 1, and the piston body 1 and the high-hardness wear-resistant sleeve 2 are fixed through the connecting assembly 15; the high-hardness wear-resistant sleeve 2 is made of a high-chromium alloy material, has high hardness and good wear resistance, and is beneficial to prolonging the service life of the piston;

the high-hardness wear-resistant sleeve 2 comprises an outer sleeve part 21 and a pressing part 22, the pressing part 22 is horizontally arranged, the outer sleeve part 21 is vertically arranged, the outer sleeve part 21 is fixedly connected with the pressing part 22, the pressing part 22 presses the upper surface of the piston body 1 downwards, and the outer sleeve part 21 is sleeved on the piston body 1; an oil ring groove 212, a gas ring groove 213 and a lining ring groove 214 are formed in the outer peripheral surface of the outer sleeve portion 21, an oil ring is mounted in the oil ring groove 212, a gas ring is mounted in the gas ring groove 213, and a lining ring is mounted in the lining ring groove 214;

the connecting assembly 15 comprises a rotating shaft 152, the rotating shaft 152 is vertically arranged and rotatably connected with the piston body 1, the top end of the rotating shaft 152 is provided with an adjusting nut 151, the piston body 1 is horizontally provided with symmetrically arranged accommodating grooves 156, the two-way stud 153 is rotatably connected with the piston body 1, two ends of the two-way stud 153 extend into the two groups of accommodating grooves 156, and in the dismounting process, the adjusting nut 151 is rotated by a specific tool to realize the rotation of the rotating shaft 152;

the cavity is formed in the piston body 1, the middle portion of the bidirectional stud 153 is located in the cavity, threads at two ends of the bidirectional stud 153 bounded by a midpoint of the bidirectional stud 153 are opposite in direction, the rotating shaft 152 is meshed with the bidirectional stud 153 through a bevel gear, the positioning cylinder 154 is slidably mounted in the accommodating groove 156 through the guide block 155, a threaded groove 157 is formed in the positioning cylinder 154, the bidirectional stud 153 is in threaded connection with the positioning cylinder 154 through the threaded groove 157, the fixing groove 215 is formed in the inner side of the outer sleeve portion 21, and one end, away from the piston body 1, of the positioning cylinder 154 penetrates through the accommodating groove 156 and is inserted into the fixing groove 215.

Example two:

as shown in fig. 1-3 and fig. 5-6, the present embodiment is different from embodiment 1 in that a first stepped groove 211 is formed in the inner bottom side of the outer sleeve portion 21, a second annular block 16 is fixedly mounted on the outer bottom side of the piston body 1, a second stepped groove 221 is formed in the inner bottom side of the lower pressing portion 22, a first annular block 12 is fixedly mounted in the lower pressing groove 11, an annular seal groove 222 is formed in the lower pressing portion 22, the annular seal groove 222 is located above the second stepped groove 221, and a ring 13 is fixedly mounted at the top of the first annular block 12; after the installation, second ring piece 16 is impressed in first step groove 211, and in first ring piece 12 impressed the second step groove 221, ring 13 inserted ring seal groove 222, not only improved the fastness of being connected between piston body 1 and the wear-resisting cover 2 of high rigidity, still helped improving the leakproofness of both junctions, helped improving the result of use.

Example three:

as shown in fig. 2-3, 5 and 7, the present embodiment is different from embodiments 1 and 2 in that a plurality of sets of positioning holes 223 are formed in the pressing portion 22, a plurality of sets of positioning vertical rods 14 are fixedly mounted in the pressing groove 11, the positioning vertical rods 14 correspond to the positioning holes 223 one by one, when mounting is performed, first, the positioning holes 223 correspond to the positioning vertical rods 14, then the pressing portion 22 presses the upper surface of the piston body 1 downward, the positioning vertical rods 14 penetrate the positioning holes 223 upward, the upper end section of the positioning vertical rods 14 is flush with the upper surface of the pressing portion 22, and by performing positioning, the fixing grooves 215 correspond to the positioning cylinders 154, the mounting efficiency is significantly improved.

The working principle of the utility model is as follows: when the piston is used, the high-hardness wear-resistant sleeve 2 is arranged, so that the hardness and the wear-resistant performance of the piston can be effectively improved, the piston is prevented from being damaged, and the service life of the piston is obviously prolonged; by pressing the second annular block 16 into the first stepped groove 211, pressing the first annular block 12 into the second stepped groove 221 and inserting the circular ring 13 into the annular seal groove 222, not only is the firmness of connection between the piston body 1 and the high-hardness wear-resistant sleeve 2 improved, but also the sealing property of the joint of the piston body and the high-hardness wear-resistant sleeve is improved, and the use effect is improved; the vertical positioning rod 14 penetrates through the positioning hole 223 to perform positioning during installation, so that the fixing groove 215 corresponds to the positioning cylinder 154, and the installation efficiency is remarkably improved;

when the high-hardness wear-resistant sleeve 2 is damaged, the adjusting nut 151 is rotated by a specific tool (such as a screwdriver) to enable the rotating shaft 152 to rotate, the rotating shaft 152 drives the bidirectional stud 153 to rotate, the guide block 155 guides the positioning cylinders 154, the two groups of positioning cylinders 154 move oppositely, namely, the distance between the two groups of positioning cylinders 154 is continuously reduced until the two groups of positioning cylinders 154 are pulled out from the corresponding fixing grooves 215, at the moment, the high-hardness wear-resistant sleeve 2 is separated from the piston body 1, the high-hardness wear-resistant sleeve 2 can be taken down, the high-hardness wear-resistant sleeve 2 is convenient to replace, the whole piston does not need to be replaced, an old piston is discarded, and the resource waste is reduced.

The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The high-hardness agricultural mechanical piston comprises a piston body (1) and a high-hardness wear-resistant sleeve (2), wherein a connecting seat (17) is fixedly installed at the bottom of the piston body (1) through a bolt, and a connecting shaft (18) is installed on the connecting seat (17), and the high-hardness agricultural mechanical piston is characterized in that a connecting assembly (15) is installed on the piston body (1), and the piston body (1) and the high-hardness wear-resistant sleeve (2) are fixed through the connecting assembly (15);

wear-resisting cover of high rigidity (2) is including outer cover portion (21) and push down portion (22), and push down portion (22) level setting, the vertical setting of outer cover portion (21), outer cover portion (21) and push down portion (22) fixed connection, and push down portion (22) and push down the upper surface of piston body (1) downwards, and outer cover portion (21) cover is on piston body (1).

2. A high-hardness agricultural mechanical piston as claimed in claim 1, wherein the bottom inside of the outer sleeve portion (21) is provided with a first stepped groove (211), the bottom outside of the piston body (1) is fixedly provided with a second annular block (16), and the second annular block (16) is pressed into the first stepped groove (211).

3. The agricultural mechanical piston with high hardness as claimed in claim 2, wherein the inner side of the bottom of the pressing portion (22) is provided with a second step groove (221), the first annular block (12) is fixedly installed in the pressing groove (11), and the first annular block (12) is pressed into the second step groove (221).

4. A high-hardness agricultural mechanical piston as claimed in claim 3, wherein an annular sealing groove (222) is formed in the pressing portion (22), the annular sealing groove (222) is located above the second stepped groove (221), a ring (13) is fixedly mounted at the top of the first annular block (12), and the ring (13) is inserted into the annular sealing groove (222).

5. The high-hardness agricultural mechanical piston as claimed in claim 4, wherein the connecting assembly (15) comprises an adjusting nut (151), a rotating shaft (152), a two-way stud (153), a positioning cylinder (154) and a guide block (155), the rotating shaft (152) is vertically arranged and rotatably connected with the piston body (1), the adjusting nut (151) is installed at the top end of the rotating shaft (152), symmetrically arranged accommodating grooves (156) are horizontally formed in the piston body (1), the two-way stud (153) is rotatably connected with the piston body (1), and two ends of the two-way stud (153) extend into the two groups of accommodating grooves (156);

the piston comprises a piston body (1), a cavity is formed in the piston body (1), the middle of a bidirectional stud (153) is located in the cavity, a rotating shaft (152) is meshed with the bidirectional stud (153) through a bevel gear, a positioning cylinder (154) is slidably mounted in a containing groove (156) through a guide block (155), a threaded groove (157) is formed in the positioning cylinder (154), the bidirectional stud (153) is in threaded connection with the positioning cylinder (154), a fixing groove (215) is formed in the inner side of an outer sleeve portion (21), and one end, far away from the piston body (1), of the positioning cylinder (154 penetrates through the containing groove (156) and is inserted into the fixing groove (215).

6. A high-hardness agricultural mechanical piston as claimed in claim 5, wherein a plurality of sets of positioning holes (223) are formed in the pressing-down portion (22), a plurality of sets of vertical positioning rods (14) are fixedly mounted in the pressing-down groove (11), and the vertical positioning rods (14) upwardly penetrate through the positioning holes (223).

7. The piston for agricultural machinery with high hardness as claimed in claim 5, wherein the outer sleeve portion (21) has an oil ring groove (212), a gas ring groove (213), and a liner ring groove (214) formed on its outer circumferential surface.