CN214035903U

CN214035903U - Piston with anti-loosening function

Info

Publication number: CN214035903U
Application number: CN202023268383.0U
Authority: CN
Inventors: 彭春华; 何强
Original assignee: Jiangsu Yonghang Rail Transit Technology Co ltd
Current assignee: Jiangsu Yonghang Rail Transit Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-24
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a piston that possesses locking function, including the piston top, the bottom on piston top is provided with the piston skirt, the bottom on piston top with through a plurality of connecting bolt fixed connection between the top of piston skirt, just the bottom on piston top seted up with connecting bolt matched with internal thread hole, the top on piston top seted up with connecting bolt matched with through-hole, the connecting bolt bottom with partial cover between the piston skirt inner wall is equipped with locking gasket. Has the advantages that: through setting up locking gasket, can effectually prevent that the connecting bolt in the piston from taking place the problem of droing to avoid the emergence of accident, in addition, through the structure on reasonable design piston top, make the piston have higher intensity, thereby adapt to more operational environment, improve life.

Description

Piston with anti-loosening function

Technical Field

The utility model relates to a piston technical field particularly, relates to a piston that possesses locking function.

Background

The piston has the function of bearing gas pressure and is transmitted to the connecting rod through the piston pin to drive the crankshaft to rotate, the piston is mainly used in an engine and is the heart of the engine, and the piston is developed into a product with high technical content integrating a plurality of new technologies along with the stricter requirements on the dynamic property, the economy, the environmental protection and the reliability of the engine for locomotives and ships.

The gasket that current was used for fixed piston to use mostly is flat the pad, because flat the locking effect of pad is poor, can appear the connecting bolt among the piston and drop and lead to the piston to produce serious accident at the operation in-process, not only can damage the engine, more likely causes the threat to user's life safety.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a piston that possesses locking function possesses the advantage that prevents the connecting bolt in the piston and drop, and then solves and leads to the piston to produce the problem of serious accident at the operation in-process because of the bolt drops.

(II) technical scheme

For the advantage that realizes that the above-mentioned connecting bolt who prevents in the piston drops, the utility model discloses a specific technical scheme as follows:

the utility model provides a piston that possesses locking function, includes the piston crown, and the bottom of piston crown is provided with the piston skirt, through a plurality of connecting bolt fixed connection between the bottom of piston crown and the top of piston skirt, and the bottom of piston crown seted up with connecting bolt matched with internal thread hole, the through-hole with connecting bolt matched with is seted up on the top of piston crown, and the part cover between connecting bolt bottom and the piston skirt inner wall is equipped with locking gasket.

Further, in order to improve the combustion efficiency of piston and make the piston have higher intensity, the piston top includes the piston top body, the bottom of piston top body is connected with the top of piston skirt, the combustion chamber has been seted up at the top middle part of piston top body, spherical chamber has been seted up at the bottom middle part of piston top body, a plurality of ring channels have been seted up to the bottom outside circumference equidistance of piston top body, the cooling chamber has been seted up to the bottom of piston top body and the position circumference that is located between spherical chamber and the ring channel.

Furthermore, in order to enable the combustion chamber to have a proper space at the top end of the piston top body and further realize the function of the combustion chamber, the cross section of the combustion chamber is of a W-shaped structure.

Furthermore, in order to ensure that the piston has enough activity space inside and thus better operation, the spherical cavity is of an arc structure with a downward opening and is communicated with the cavity arranged inside the piston skirt.

Furthermore, in order to ensure that the metal ring is installed more stably, the groove-shaped section of the annular groove is of a rectangular structure.

Furthermore, in order to ensure that the anti-loosening gasket has a larger contact area with the inner wall of the piston skirt, the anti-loosening gasket is of a conical structure, and the cross section of the anti-loosening gasket in the direction away from the inner wall of the piston skirt is gradually reduced.

Furthermore, in order to prevent the relative sliding between the inner walls of the anti-loosening gasket and the piston skirt, a plurality of anti-slip ribs are longitudinally arranged on the inner walls of the anti-loosening gasket.

(III) advantageous effects

Compared with the prior art, the utility model provides a piston that possesses locking function possesses following beneficial effect:

(1) through setting up locking gasket, can effectually prevent that the connecting bolt in the piston from taking place the problem of droing to avoid the emergence of accident, in addition, through the structure on reasonable design piston top, make the piston have higher intensity, thereby adapt to more operational environment, improve life.

(2) The anti-slip ribs are arranged on the inner walls of the anti-loose gaskets, so that relative sliding cannot occur between the anti-loose gaskets and the inner walls of the piston skirt, and stable connection of the connecting bolt is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a piston with a locking function according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a piston crown in a piston with a locking function according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a schematic structural diagram of a check washer in a piston with a check function according to an embodiment of the present invention.

In the figure:

1. a piston top; 101. a piston crown body; 102. a combustion chamber; 103. a spherical cavity; 104. an annular groove; 105. a cooling chamber; 2. a piston skirt; 3. a connecting bolt; 4. a lock washer; 5. and (4) anti-skid ribs.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a piston that possesses locking function.

Now combine the attached drawing and detailed implementation to right the utility model discloses explain further, as shown in fig. 1-4, according to the utility model discloses a piston that possesses locking function, bottom including piston crown 1 is provided with piston skirt 2, through 3 fixed connection of a plurality of connecting bolt between the bottom of piston crown 1 and the top of piston skirt 2, and the bottom of piston crown 1 seted up with connecting bolt 3 matched with internal thread hole, the top of piston crown 1 seted up with connecting bolt 3 matched with through-hole, the partial cover between connecting bolt 3 bottom and the 2 inner walls of piston skirt is equipped with locking gasket 4.

With the help of above-mentioned scheme, through setting up locking gasket 4, can effectually prevent that connecting bolt 3 in the piston from taking place the problem of droing to avoid the emergence of accident, in addition, through the structure of reasonable design piston top 1, make the piston have higher intensity, thereby adapt to more operational environment, improve life.

In one embodiment, the piston crown 1 comprises a piston crown body 101, the bottom end of the piston crown body 101 is connected with the top of the piston skirt 2, a combustion chamber 102 is arranged in the middle of the top end of the piston crown body 101, a spherical cavity 103 is arranged in the middle of the bottom end of the piston crown body 101, a plurality of annular grooves 104 are arranged on the bottom outer side of the piston crown body 101 at equal intervals, a cooling cavity 105 is arranged on the bottom of the piston crown body 101 and on the position between the spherical cavity 103 and the annular grooves 104, and the structure of the piston crown 1 is reasonably designed, so that the combustion efficiency of the piston can be improved, and the piston has higher strength.

In one embodiment, the combustion chamber 102 is of a W-shaped configuration in cross-section, such that the combustion chamber 102 has a suitable space at the top of the crown body 101 to perform its function.

In one embodiment, the spherical cavity 103 is an arc structure with a downward opening, and the spherical cavity 103 is communicated with a chamber opened inside the piston skirt 2, so that sufficient moving space inside the piston can be ensured, and better operation can be realized.

In one embodiment, the groove-shaped cross-section of the annular groove 104 is a rectangular structure, which makes the metal ring more stable to mount.

In one embodiment, the anti-loose pad 4 has a tapered structure, and the cross section of the anti-loose pad 4 is gradually reduced in a direction away from the inner wall of the piston skirt 2, so that the anti-loose pad 4 and the inner wall of the piston skirt 2 have a larger contact area.

In one embodiment, the inner wall of the anti-loose pad 4 is longitudinally provided with a plurality of anti-slip ribs 5, so that the anti-loose pad 4 and the inner wall of the piston skirt 2 can be prevented from sliding relatively.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, firstly, the bottom end of the piston top 1 is connected with the top end of the piston skirt 2, so that the internal thread hole at the bottom end of the piston top 1 is aligned with the through hole at the top end of the piston skirt 2, the anti-loosening gasket 4 is sleeved into the connecting bolt 3 in an inverted cone form, then the connecting bolt 3 passes through the through hole on the piston skirt 2 from bottom to top and is connected with the internal thread hole inside the piston top 1, the connecting bolt 3 is rotated clockwise until the anti-loosening gasket 4 is contacted with the piston skirt 2, the anti-slipping rib 5 on the anti-loosening gasket 4 is contacted with the piston skirt 2 at the moment, the connecting bolt 3 is continuously rotated, the anti-loosening gasket 4 stops rotating under the action of the anti-slipping rib 5 and is compressed by the connecting bolt 3, at the moment, the connecting bolt 3 stops rotating, and the anti-loosening gasket 4 is compressed, so that continuous elastic force is generated, and contact pressure is generated between the internal thread inside the piston top 1 and the external thread of the connecting bolt 3, this pressure produces a frictional resistance torque, so that the connecting bolt 3 is loosened.

In summary, with the aid of the technical solution of the present invention, by providing the anti-loose pad 4, the problem of falling off of the connecting bolt 3 in the piston can be effectively prevented, so as to avoid accidents, and in addition, by reasonably designing the structure of the piston top 1, the piston has higher strength, so as to adapt to more working environments and prolong the service life; through set up anti-skidding rib 5 at 4 inner walls of check washer, can make and can not take place relative slip between 2 inner walls of check washer 4 and piston skirt to guarantee connecting bolt 3's stable connection.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a piston that possesses locking function, its characterized in that, includes piston top (1), the bottom of piston top (1) is provided with piston skirt (2), the bottom of piston top (1) with through a plurality of connecting bolt (3) fixed connection between the top of piston skirt (2), just the bottom of piston top (1) seted up with connecting bolt (3) matched with internal thread hole, the top of piston top (1) seted up with connecting bolt (3) matched with through-hole, connecting bolt (3) bottom with partial cover between piston skirt (2) inner wall is equipped with locking gasket (4).

2. The piston with the anti-loosening function according to claim 1, wherein the piston top (1) comprises a piston top body (101), the bottom end of the piston top body (101) is connected with the top of the piston skirt (2), a combustion chamber (102) is formed in the middle of the top end of the piston top body (101), a spherical cavity (103) is formed in the middle of the bottom end of the piston top body (101), a plurality of annular grooves (104) are formed in the circumference of the outer side of the bottom of the piston top body (101) at equal intervals, and a cooling cavity (105) is formed in the circumference of the bottom of the piston top body (101) and in the position between the spherical cavity (103) and the annular grooves (104).

3. The piston with the anti-loosening function as claimed in claim 2, wherein the cross section of the combustion chamber (102) is of a W-shaped structure.

4. The piston with the anti-loosening function as claimed in claim 2, wherein the spherical cavity (103) is of an arc structure with a downward opening, and the spherical cavity (103) is communicated with a chamber arranged inside the piston skirt (2).

5. The piston with the anti-loosening function as claimed in claim 2, wherein the groove-shaped cross section of the annular groove (104) is of a rectangular structure.

6. The piston with the anti-loosening function according to claim 1, wherein the anti-loosening gasket (4) is of a conical structure, and the cross section of the anti-loosening gasket (4) is gradually reduced in a direction away from the inner wall of the piston skirt (2).

7. The piston with the anti-loosening function according to claim 6, wherein the inner wall of the anti-loosening gasket (4) is longitudinally provided with a plurality of anti-slip ribs (5).