CN216429909U

CN216429909U - Swing piece structure

Info

Publication number: CN216429909U
Application number: CN202123198570.0U
Authority: CN
Inventors: 常军平; 姚广山
Original assignee: Sks Hydraulic Technology Co ltd
Current assignee: Sks Hydraulic Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-03
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a swinging part structure, which is formed by assembling two parts which are separately processed and formed, namely a swinging body and a swinging arm; the rear end face of the swinging body is formed into a positioning clamping groove used for positioning and installing the swinging arm, the lower part of the swinging arm is installed in the positioning clamping groove of the swinging body in an interference fit manner, and two fastening bolts used for reinforcing are additionally arranged between the swinging arm and the swinging body. The utility model discloses a swing body and swing arm adopt independent machine-shaping, processing easy, matched stack simple to low in production cost, efficient.

Description

Swing piece structure

Technical Field

The utility model relates to a manufacturing technology of hydraulic pump especially is applied to a rocking piece structure in the variable displacement pump.

Background

The swinging piece is the most central component of the variable displacement plunger pump, and the variables are realized through the swinging piece. In variable displacement plunger pumps, the configuration of the wobble member generally determines the variable characteristics and performance of the variable displacement pump. The swing member in the prior art is generally of an integral structure, which is cast or forged to form a blank member, and then the blank member is integrally processed. The oscillating piece with the integral structure is difficult to clamp in the machining process, and the central shafts of the two arc ways of the oscillating piece and the central axis of the small shaft end of the oscillating piece are required to have higher parallelism and roughness, so the machining difficulty is very high.

Disclosure of Invention

The utility model aims to solve the technical problem that the present situation of the prior art is aimed at, and provides a swing piece structure which is manufactured in a split manner, is easy to process and is simple to assemble.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

a swing piece structure is formed by assembling two parts which are separately processed and molded, namely a swing body and a swing arm; the rear end face of the swinging body is formed into a positioning clamping groove used for positioning and installing the swinging arm, the lower part of the swinging arm is installed in the positioning clamping groove of the swinging body in an interference fit manner, and two fastening bolts used for reinforcing are additionally arranged between the swinging arm and the swinging body.

In order to optimize the technical scheme, the specific measures adopted further comprise:

threaded holes are processed in the positioning clamping grooves, countersunk holes are formed in the lower portions of the swing arms, and fastening bolts penetrate through the countersunk holes of the swing arms to be matched with the threaded holes in the positioning clamping grooves in a spiral mode.

The thread of the fastening bolt is coated with a thread glue layer for preventing the fastening bolt from loosening.

Compared with the prior art, the utility model discloses it comprises with two independent machine-shaping's of rocking arm part assembly to rock the body, rocks the body and adopts interference fit between the rocking arm, plus fastening bolt fastening, so the sound construction is reliable. The two parts are independently processed, so that the clamping and processing difficulty is reduced, and meanwhile, the center distance between the small shaft end of the swinging piece and the swinging arc way can be ensured.

Drawings

FIG. 1 is a cross-sectional structural view of a swing member in the prior art;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a plan view of the rocking body of the present invention.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Wherein the reference numerals are: the swing body 1, a positioning clamping groove 1a, a threaded hole 1b, a swing arc channel 11, a swing arm 2, a small shaft end 21 and a fastening bolt 3.

The swing piece in the prior art is an integral piece integrally processed and formed by a blank piece. As shown in figure 1, in the processing process, the central axes of the two swing arc channels 11 of the swing piece and the central axis of the small shaft end 21 of the swing piece need to ensure higher parallelism and roughness, and the swing piece with the structure has great difficulty for clamping and processing, thereby causing the problems of low production efficiency, high rejection rate and the like.

As shown in fig. 2 to 4, the utility model discloses a swing piece structure, the swing piece of this swing piece structure comprises swing body 1 and two independent machine-shaping's of swing arm 2 part equipment, wherein: the two rocking tracks 11 of the rocking part are formed on the rocking body 1, and the small shaft ends 21 are formed on the rocking arm 2. The rear end face of the swinging body 1 is formed with a positioning clamping groove 1a for positioning and installing the swinging arm 2, and the positioning clamping groove 1a can prevent the swinging arm 2 from swinging left and right. The lower part of the swing arm 2 is clamped and assembled in a positioning clamping groove 1a of the swing body 1 in an interference fit mode, and in order to further ensure that the swing arm 2 and the swing body 1 cannot loosen, two fastening bolts 3 for reinforcing are additionally arranged between the swing arm 2 and the swing body 1.

As shown in fig. 3, the threaded hole 1b is processed in the positioning slot 1a, the lower portion of the swing arm 2 is formed with a countersunk hole, and the fastening bolt 3 passes through the countersunk hole of the swing arm 2 to be screwed with the threaded hole 1b in the positioning slot 1 a. The fastening bolt 3 is a hexagon socket head cap screw, a countersunk hole is processed on the swing arm 2, and thus the hexagon socket head of the fastening bolt 3 can be sunk into the countersunk hole.

The utility model discloses a be used for preventing the not hard up screw thread glue film of fastening bolt 3 to scribble on fastening bolt 3's the screw thread.

The utility model discloses changed the tradition and swayed the structure of piece, will sway the piece and divide into and sway body 1 and sway two parts of arm 2, sway body 1 and sway the mode machine-shaping that arm 2 adopted independent processing, it has the positioning channel section 1a that can the location installation sway arm 2 to process on rocking body 1. During processing, the swing body 1 only needs to ensure the parallelism of the assembly surface and the swing arc road surface, then the assembly gap and the roughness are controlled once, the swing arm 2 needs to ensure the verticality of the small shaft end 21 and the assembly surface, and the roughness of the small shaft end and the cylinder can be better ensured because of the more convenient clamping of the structure.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. A swing piece structure is characterized in that: the swing arm is formed by assembling two parts which are separately processed and molded, namely a swing body (1) and a swing arm (2); swing the rear end face shaping of body (1) and be used for location installation to swing positioning groove (1a) of arm (2), swing the lower part interference fit ground of arm (2) and install in the positioning groove (1a) of the body (1) that sways to it still installs two fastening bolt (3) that are used for playing the reinforcing effect additional between arm (2) and the body (1) to swing.

2. A rocking member structure as claimed in claim 1, wherein: the positioning clamping groove (1a) is internally provided with a threaded hole (1b), the lower part of the swinging arm (2) is formed with a countersunk hole, and the fastening bolt (3) penetrates through the countersunk hole of the swinging arm (2) to be matched with the threaded hole (1b) in the positioning clamping groove (1a) in a spiral mode.

3. A rocking member structure as claimed in claim 2, in which: and a thread glue layer for preventing the fastening bolt (3) from loosening is coated on the threads of the fastening bolt (3).