CN214035990U - Swing variable adjusting structure - Google Patents

Abstract

The utility model discloses a swing variable regulating structure, which comprises a swing body, wherein a swing sloping platform is integrally processed on one side of the swing body, a variable ball socket for rotatably mounting a swing variable ball is processed on the end surface of the swing sloping platform, and the swing sloping platform is formed on one side of the swing body in a downward inclined manner; the top cutting of rocking variable ball has the spacing plane that is used for injecing rocking body swing angle through butting mutually with the ejector pin, and the bottom processing of variable ball socket has the spring locating hole, installs the variable spring in the spring locating hole, and the bottom butt of variable spring and rocking variable ball is used for providing the elastic buffer power for rocking variable ball, and the spring force of variable spring is used for making to wave between the outer wall of variable ball and the inner wall of variable ball socket and hug closely mutually and be formed with a liquid seal line on rocking variable ball. The utility model discloses the structure is succinct, processing is easy, can not only avoid the ejector pin and sway the hard contact between the variable ball, can prevent moreover that the particulate matter in the fluid from getting into in the variable ball socket.

Description

Swing variable adjusting structure

Technical Field

The utility model relates to a variable control technique of hydraulic pump, especially a swing variable control structure for variable plunger pump.

Background

The performance of the variable displacement piston pump is mainly determined by a control valve and a variable mechanism, a swinging piece in the variable mechanism is the most core part, variables are adjusted through the swinging angle of the swinging piece, and the swinging piece in the variable mechanism often determines the variable characteristic and the use performance of the pump. The existing swing variable structure generally adopts a variable mode of matching swing and swing variable balls, in the using process, the swing is performed in a reciprocating mode, the ejector rod limits the swing angle of the swing, so the variable balls can periodically collide with the ejector rod, the generated impact is large due to hard contact, and secondly, because gaps exist between the variable balls and ball sockets, particles in oil are easy to fall into in the working process of a system, the hair is released, and the variable is insensitive.

Disclosure of Invention

The utility model aims to solve the technical problem to the current situation of above-mentioned prior art, and provide the structure succinct, processing is easy, can avoid the ejector pin and sway the hard contact of variable ball to can prevent that the particulate matter in the fluid from getting into one kind of the variable ball socket of swaing the variable regulation structure.

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

a swing variable adjusting structure comprises a swing body, wherein a swing inclined table is integrally processed on one side of the swing body, a variable ball socket for rotatably mounting a swing variable ball is processed on the end surface of the swing inclined table, the swing inclined table is formed on one side of the swing body in a downward inclined mode, and the inclination angle alpha between the swing inclined table and the swing body is 24-26 degrees; the top cutting of rocking variable ball has the spacing plane that is used for injecing rocking body swing angle through butting mutually with the ejector pin, the bottom processing of variable ball socket has the spring locating hole, the location is installed variable spring in this spring locating hole, variable spring and rocking variable ball's bottom butt are used for providing the elastic buffer power for rocking variable ball when spacing plane and ejector pin collide, and the spring force of this variable spring is used for making to wave outer wall of variable ball and the inner wall of variable ball socket to hug closely mutually and be formed with the liquid seal line that can prevent the filth in the fluid and get into on rocking variable ball.

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

the central line axis of the spring positioning hole passes through the spherical center of the variable ball socket, and an included angle beta of 24-26 degrees is formed between the central line axis of the spring positioning hole and the central line of the swinging body.

The inclination angle alpha between the swing inclined table and the swing body and the included angle beta between the centerline axis of the spring positioning hole and the centerline of the swing body are both 25 degrees.

An annular groove for conveniently placing the swing variable ball into the variable ball socket is machined in the variable ball socket.

Compared with the prior art, the utility model discloses sway the sloping platform and sway and be formed with 25 degrees angle of inclination alpha between the body, such design more is favorable to swaing body inclination's control, the utility model discloses bottom processing at the variable ball socket has the spring locating hole, and install the variable spring at this spring locating hole, the variable spring can utilize spring force to sway between the outer wall of variable ball and the inner wall of variable ball socket and hug closely all the time with swaing variable ball looks apical grafting, thereby can form the liquid seal line that prevents the filth in the fluid entering together, simultaneously owing to there is the existence of variable spring, when the spacing plane of swaing variable ball collides with the ejector pin, can also provide the elastic buffer power for swaing variable ball through the variable spring, thereby avoided swaing the rigid contact of variable ball and ejector pin.

The utility model discloses the structure is succinct, processing is easy, can not only avoid the ejector pin and sway the hard contact between the variable ball, can prevent moreover that the particulate matter in the fluid from getting into in the variable ball socket.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a structural diagram of the rocking body of the present invention;

fig. 3 is a sectional view illustrating the socket of fig. 2.

Detailed Description

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

Fig. 1 to 3 are structural schematic diagrams of the present invention.

Wherein the reference numerals are: the swing type variable spring comprises a center line L, a center line axis L1, a swing body 1, a swing inclined table 11, a variable ball socket 11a, a spring positioning hole 11b, an annular groove 11c, a swing variable ball 2, a limiting plane 21 and a variable spring 3.

In the prior art, the limitation of the variable angle of the variable plunger pump is realized by the contact of a variable ball and an ejector rod, and the maximum or minimum power of the variable plunger pump can be limited by the contact of the variable ball and the ejector rod. However, the conventional touch is hard contact, so that a relatively large impact is generated, and furthermore, because a gap exists between the variable ball and the ball socket, particles in oil easily fall into the variable ball during the operation of the system, so that the variable ball is clamped, and the variable is insensitive. Therefore, in order to address such a situation, it is necessary to improve the variable adjustment structure of the variable displacement plunger pump accordingly.

As shown in fig. 1 to 3, the utility model discloses a swing variable regulating structure, this regulation structure is including swinging body 1, and one side integrated into one piece of swinging body 1 has the sloping platform 11 that sways, and processing has the variable ball socket 11a that is used for rotating installation swing variable ball 2 on the terminal surface of this sloping platform 11 that sways. The utility model discloses a contribution lies in swaying the project organization that sloping platform 11 adopted the slope, and its downward sloping ground shaping is in the one side of swaing body 1. In order to be convenient for more control the angle of swaying of swaing body 1 to prevent to produce the influence to the transmission shaft of pump, the utility model discloses a sway the sloping platform 11 and sway the angle of inclination alpha between body 1 and can design in the scope of 24 degrees to 26 degrees. The utility model discloses the top cutting of swaing variable ball 2 has limiting plane 21, and this limiting plane 21 connects the cooperation to inject the swing angle of swaing body 1 through the ejector pin top with in the plunger pump. The utility model discloses bottom processing at variable ball socket 11a has a spring locating hole 11b, and a variable spring 3 is installed in the location among this spring locating hole 11 b. The variable spring 3 is positioned and pressed in the spring positioning hole 11b through the swinging variable ball 2, the variable spring 3 is elastically abutted with the bottom of the swinging variable ball 2, and therefore when the limiting plane 21 of the swinging variable ball 2 collides with the ejector rod, due to the existence of the variable spring 3, the variable spring 3 can provide elastic buffering force for the swinging variable ball 2, and therefore large impact on a pump caused by traditional hard contact can be reduced. In addition, the spring force of the variable spring 3 acts on the swing variable ball 2 all the time, so that the swing variable ball 2 has a tendency of falling off the variable ball socket 11a, the outer wall of the swing variable ball 2 can be tightly attached to the inner wall of the variable ball socket 11a, a circle of liquid sealing line is formed, dirt in oil can be prevented from entering the variable ball socket 11a, and the rotation sensitivity of the swing variable ball 2 and the variable ball socket 11a is ensured.

In the embodiment, as shown in fig. 2, the center line axis L1 of the spring positioning hole 11b of the present invention passes through the center line of the variable ball socket 11a, that is, the center line axis L1 of the variable ball socket 11a falls on the center line axis L1 of the spring positioning hole 11b, and an included angle β of 24 degrees to 26 degrees is formed between the center line axis L1 of the spring positioning hole 11b and the center line L of the rocking body 1.

In the embodiment of the present invention, the inclined angle α between the swing ramp 11 and the swing body 1 and the included angle β between the centerline axis L1 of the spring positioning hole 11b and the centerline L of the swing body 1 are preferably 25 degrees.

In the embodiment, as shown in fig. 3, the utility model discloses still process one annular groove 11c in variable ball socket 11a, annular groove 11c can increase the convenience that the variable ball 2 that sways was put into variable ball socket 11a, and it is a structure that is used for putting into the variable ball 2 that sways promptly.

The utility model discloses in the below of variable ball socket 11a, process a spring locating hole 11b that can install variable spring 3. By adopting the structure, when the swing variable ball 2 is contacted with the mandril (the utility model discloses a do not appear in each figure), there is a buffer force, thereby the impact force of fluid has been reduced. And swing body 1 in the motion of swaying, variable spring 3 can be constantly withstood swing variable ball 2 for swing variable ball 2 and variable ball socket 11a form a line seal, can effectually prevent the filth entering in the fluid, make swing variable ball 2's rotation flexibility maintain for a longer time.

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 (4)

1. The utility model provides a sway variable control structure, includes and sways body (1), one side integrated processing of rocking body (1) have a sway sloping platform (11), the terminal surface of sway sloping platform (11) on process and be used for rotating variable ball socket (11a) of installation sway variable ball (2), characterized by: the swing sloping platform (11) is formed on one side of the swing body (1) in a downward inclined manner, and the inclination angle alpha between the swing sloping platform (11) and the swing body (1) is 24-26 degrees; the top of the swing variable ball (2) is cut with a limit plane (21) which is connected with the ejector rod in a propping manner and used for limiting the swing angle of the swing body (1), the bottom of the variable ball socket (11a) is provided with a spring locating hole (11b), a variable spring (3) is installed in the spring locating hole (11b) in a locating manner, the variable spring (3) is connected with the bottom of the swing variable ball (2) in a propping manner and used for providing elastic buffering force for the swing variable ball (2) when the limit plane (21) collides with the ejector rod, and the spring force of the variable spring (3) acts on the swing variable ball (2) to enable the outer wall of the swing variable ball (2) and the inner wall of the variable ball socket (11a) to be tightly attached to form a liquid sealing line capable of preventing dirt in oil from entering.

2. A rocking variable regulating structure as claimed in claim 1, wherein: the midline axis (L1) of the spring positioning hole (11b) passes through the center of the variable ball socket (11a), and an included angle beta of 24-26 degrees is formed between the midline axis (L1) of the spring positioning hole (11b) and the central line (L) of the swinging body (1).

3. A rocking variable regulating structure as claimed in claim 2, wherein: the inclination angle alpha between the swing inclined table (11) and the swing body (1) and the included angle beta between the centerline axis (L1) of the spring positioning hole (11b) and the centerline (L) of the swing body (1) are both 25 degrees.

4. A rocking variable regulating structure as claimed in claim 3, wherein: an annular groove (11c) for conveniently placing the swing variable ball (2) into the variable ball socket (11a) is machined in the variable ball socket (11 a).

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