CN221211355U

CN221211355U - Piston ring assembly fixture

Info

Publication number: CN221211355U
Application number: CN202322658453.0U
Authority: CN
Inventors: 刘伟; 邱春龙
Original assignee: Chongqing Kaipu Jibao Power Machinery Co ltd; Chongqing Kaibao Power Machinery Co ltd
Current assignee: Chongqing Kaipu Jibao Power Machinery Co ltd; Chongqing Kaibao Power Machinery Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-06-25
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to a piston ring assembly fixture, which comprises a shell, wherein the inner diameter of the shell is matched with the outer diameter of a piston ring, the shell can be operated to be arranged on the piston in a sliding fit manner along the axial direction of the piston, the inner contour of the shell is provided with a step which is used for being contacted with the top of the piston, and the shell is operated to be arranged on the piston in a sliding fit manner so as to drive the piston ring to slide along the axial direction of the piston, so that the piston ring is clamped in an annular groove. When the piston ring is used, the piston ring is placed at the top of the piston, then the shell is coaxially placed at the top of the piston, then the shell is driven to move the bottom of the shell to be in contact with the piston ring, and the piston ring is driven to move downwards along the axial direction of the piston.

Description

Piston ring assembly fixture

Technical Field

The utility model relates to the technical field of piston ring assembly, in particular to a piston ring assembly fixture.

Background

The piston ring is a metal elastic ring having a large outward expansion deformation, and is fitted into an annular groove having a cross section corresponding thereto. The reciprocating and rotating piston ring forms a seal between the outer circumferential surface of the ring and the cylinder and one side of the ring and the ring groove by means of a pressure difference of gas or liquid.

The piston ring needs to be installed on the piston, at present, the installation of the piston ring is mainly manual, but the manual installation is very troublesome and complicated, firstly, the piston ring needs to be sleeved on the piston, then the piston ring is manually moved to an annular groove of the piston, however, the process of moving the piston ring downwards is examined, and the skill of an assembling person, especially when the second piston ring is installed, the piston ring is easy to damage or the assembling is not in place.

Therefore, it is necessary to design a tooling to assist in installing the piston ring and to assemble the piston ring into the annular groove of the corresponding piston.

Disclosure of utility model

In view of the above, the utility model provides a piston ring assembly fixture, which is used for assisting in installing a piston ring, assembling the piston ring in a ring-shaped groove of a corresponding piston, and improving the working efficiency.

The utility model provides a piston ring assembly tool which adopts the following technical scheme:

The utility model provides a piston ring assembly fixture, includes the casing, the internal diameter of casing and the external diameter adaptation of piston ring, the casing can be operated along the axial sliding fit setting in the piston of piston, the interior profile of casing is provided with the step, the step is used for contacting with the top of piston, the casing is operated sliding fit setting in the piston in-process casing and is driven the piston ring along the axial slip of piston, makes its joint in the ring channel.

Optionally, the length between the bottom end of the housing and the step is approximately equal to the length between the top wall of the annular groove and the top of the piston.

Optionally, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are detachably connected, and the step is located on an inner contour of the lower housing.

Optionally, the upper shell and the lower shell are in threaded connection.

Optionally, the top of the housing gathers inwards.

Optionally, the shell penetrates up and down.

In summary, the present utility model includes at least one of the following beneficial technical effects: when the piston ring is used, the piston ring is placed at the top of the piston, then the shell is coaxially placed at the top of the piston, then the shell is driven to move the bottom of the shell to be in contact with the piston ring, and the piston ring is driven to move downwards along the axial direction of the piston.

Drawings

FIG. 1 is a top view of an embodiment of the present utility model with a first piston ring installed;

FIG. 2 is a schematic view of a second piston ring according to an embodiment of the present utility model;

fig. 3 is a schematic view of the overall structure of the housing according to the embodiment of the present utility model.

Reference numerals illustrate: 1. an upper housing; 2. a lower housing; 3. a step; 4. a piston; 5. an annular groove.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a piston ring assembly fixture.

Referring to fig. 1, 2 and 3, a piston ring assembly fixture comprises a housing, wherein the inner diameter of the housing is matched with the outer diameter of a piston 4 ring, the housing can be operated to be arranged on the piston 4 in a sliding fit manner along the axial direction of the piston 4, a step 3 is arranged on the inner outline of the housing, the step 3 is used for being in contact with the top of the piston 4, and the housing is operated to be arranged on the piston 4 in a sliding fit manner, so that the housing drives the piston 4 ring to slide along the axial direction of the piston 4, and is clamped in an annular groove 5. When the piston 4 is used, the piston 4 ring is placed at the top of the piston 4, then the shell is coaxially placed at the top of the piston 4, then the shell is driven to move the bottom of the shell to be in contact with the piston 4 ring, and the piston 4 ring is driven to move downwards along the axial direction of the piston 4, when the step 3 is in contact with the top of the piston 4, the piston 4 ring is clamped in the annular groove 5, the working process that a worker manually clamps the piston 4 ring in the annular groove 5 is omitted, and the working efficiency is improved.

In this embodiment, the upper and lower portions of the housing penetrate, and the top of the housing gathers inwards, so that the piston 4 can be better clamped in the corresponding annular groove 5 by adopting the above structure.

In this embodiment, the length between the bottom of casing and step 3 is approximately equal with the length between the roof of ring channel 5 and the top of piston 4, when making step 3 and the top contact of piston 4, corresponding piston 4 ring and corresponding ring channel 5 joint make this frock can match automation equipment and use, like electric jar etc. in addition, when manually installing, also make things convenient for the staff to fix a position, effectively avoid the joint not in place, or extrude the too big, conveniently install piston 4 ring between the messenger's piston 4 and the casing, further improve work efficiency.

In this embodiment, the housing comprises an upper housing 1 and a lower housing 2, a step 3 being located in the inner contour of the lower housing 2,

The upper casing 1 and the lower casing 2 are detachably connected, and specifically, the upper casing 1 and the lower casing 2 are in threaded connection. When the piston 4 rings in different positions are installed, the lower shell 2 is replaced, the length between the bottom end of the lower shell 2 and the step 3 is approximately equal to the length between the top wall of the annular groove 5 and the top of the piston 4, applicability is improved, one tool can meet the requirement of the installation work of the piston 4 ring of one piston 4, and two piston rings on the piston 4 are quickly installed through tool combination.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A piston ring assembly fixture is characterized in that: the piston ring comprises a shell, wherein the inner diameter of the shell is matched with the outer diameter of the piston ring, the shell can be operated to be arranged on the piston in a sliding fit manner along the axial direction of the piston, the inner outline of the shell is provided with a step, the step is used for being contacted with the top of the piston, and the shell is operated to be arranged in a sliding fit manner in the piston process, so that the piston ring is driven to slide along the axial direction of the piston, and is clamped in the annular groove.

2. The piston ring assembly fixture of claim 1, wherein: the length between the bottom end of the housing and the step is approximately equal to the length between the top wall of the annular groove and the top of the piston.

3. The piston ring assembly fixture of claim 1, wherein: the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected, and the step is positioned on the inner contour of the lower shell.

4. A piston ring assembly fixture as set forth in claim 3, wherein: the upper shell is in threaded connection with the lower shell.

5. The piston ring assembly fixture of claim 1, wherein: the top of the shell gathers inwards.

6. The piston ring assembly fixture of claim 4, wherein: the shell penetrates up and down.