CN216142987U

CN216142987U - Hydraulic jack reversing valve

Info

Publication number: CN216142987U
Application number: CN202120149732.2U
Authority: CN
Inventors: 张岩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2022-03-29
Anticipated expiration: 2031-01-20

Abstract

The utility model discloses a hydraulic jack reversing valve, wherein a valve body is a regular polygonal prism, a thimble groove and a first vertical pipeline which are sequentially communicated are arranged on a lower valve body along a central axis, the thimble groove is communicated with an upper valve cavity, and a first one-way valve port is arranged on the first vertical pipeline; the side wall of the lower valve body is provided with an oil delivery hole which is communicated with a second vertical pipeline through an oil delivery pipeline, and the oil delivery hole is communicated with the thimble groove through an oil return pipeline; a second one-way valve port is arranged on the second vertical pipeline; the first vertical pipeline is communicated with the second vertical pipeline through a horizontal pipeline, and a third one-way valve port is arranged on the horizontal pipeline; the first vertical pipeline and the second vertical pipeline are communicated to the lower surface of the lower valve body. The surface of the reversing valve main body is arranged to be regular polygon prism-shaped, so that the reversing valve main body is convenient to process and accurately position hole positions, the polygon prism-shaped structure is convenient to position the hole positions when being mounted, the reversing valve main body is fast and accurate, the reversing valve main body is simple and convenient to process and reasonable in structure, an oil conveying pipeline is optimized, and the reversing valve main body has a better working effect.

Description

Hydraulic jack reversing valve

Technical Field

The utility model relates to the technical field of structural design and processing of jack accessories, in particular to a reversing valve of a hydraulic jack.

Background

The pneumatic hydraulic horizontal multi-stage jack is a lifting device which is developed in recent years, has the advantages of exquisite design, small volume, light weight, easy operation, convenient movement and large lifting force, completely adopts pneumatic operation instead of manual operation, greatly reduces the labor intensity, is widely applied to mobile lifting operation, is particularly widely used in the field of automobile maintenance, and is particularly key to the design and manufacture of a reversing valve serving as a core component of the device.

Patent application publication No. CN203926200U, the patent name is a hydraulic jack's valve, discloses a hydraulic jack's valve, including last valve pocket and the lower valve body of last valve pocket below, go up the valve pocket and be the cylinder, lower valve body is cylindrical, is equipped with the pipeline that oil absorption and oil extraction were used on lower valve body, and the pipeline mainly sets up to three vertical pipelines that communicate each other, is equipped with three check valve ports inside three vertical pipelines respectively, and three vertical pipelines all communicate to the lower surface of lower valve body. Although the structure has the advantages of small occupied volume, high oil transportation efficiency and contribution to the miniaturization of the jack and the improvement of the hoisting efficiency, the structure of the passage is complex and difficult to maintain, and the passage is processed into a cylinder shape and is difficult to position when the hole is opened. Patent application publication No. CN205876841U discloses a valve body subassembly for jack, and it has simplified the arranging of defeated oil pipeline way, but its itself also is cylindrical design, is difficult to the location accuracy when side trompil and bottom surface trompil, has promoted the processing degree of difficulty to be difficult to one step of installation when agreeing with the installation face and target in place, reduce work efficiency.

Therefore, the problem to be solved by those skilled in the art is how to provide a hydraulic jack directional control valve with reasonably distributed hole sites and convenient processing.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a hydraulic thousand gold top reversing valve, which reduces the processing difficulty by changing the appearance, improves the accuracy of hole positions, and reasonably arranges a pipeline structure.

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

a hydraulic jack reversing valve comprises a valve body, wherein the valve body is a regular polygonal prism, the valve body comprises an upper valve body and a lower valve body which are integrally arranged, an upper valve cavity is arranged in the upper valve body, and the top surface of the upper valve cavity is open, and the bottom surface of the upper valve cavity is the top surface of the lower valve body;

the lower valve body is provided with a thimble groove and a first vertical pipeline which are sequentially communicated along the central axis direction, the thimble groove is communicated with the upper valve cavity, and a first one-way valve port is arranged on the first vertical pipeline;

the side wall of the lower valve body is provided with an oil conveying hole, the oil conveying hole is communicated with a second vertical pipeline through an oil conveying pipeline, and the oil conveying hole is communicated with the thimble groove through an oil return pipeline;

a second one-way valve port is arranged on the second vertical pipeline;

the first vertical pipeline is communicated with the lower part of a second one-way valve port of the second vertical pipeline through a horizontal pipeline below the first one-way valve port, and a third one-way valve port is arranged on the horizontal pipeline;

the first vertical pipeline and the second vertical pipeline are communicated to the lower surface of the lower valve body.

Furthermore, the first vertical pipeline comprises a first wide-diameter section and a first narrow-diameter section which are sequentially arranged, a first check valve port is arranged at the joint of the first wide-diameter section and the first narrow-diameter section, and the first narrow-diameter section is communicated with the thimble groove;

the second vertical pipeline comprises a second wide-diameter section and a second narrow-diameter section which are sequentially arranged, a second one-way valve port is arranged at the joint of the second wide-diameter section and the second narrow-diameter section, and the second narrow-diameter section is communicated with the oil pipeline;

the first wide diameter section is communicated with the second wide diameter section through the horizontal pipeline.

Furthermore, the joint of the horizontal pipeline and the first wide-diameter section is a third one-way valve port.

Furthermore, the side wall of the lower valve body is provided with a threaded hole, the threaded hole is communicated with the horizontal pipeline, and the inner diameter of the threaded hole is larger than that of the horizontal pipeline.

Furthermore, a first spring is arranged in the first wide-diameter section, the top end of the first spring is abutted against the first steel ball to the first one-way valve opening, a second spring is arranged in the second wide-diameter section, the top end of the second spring is abutted against the second steel ball to the second one-way valve opening, a third spring is arranged in the threaded hole, and the end of the third spring is abutted against the third steel ball to the third one-way valve opening.

Further, the threaded hole is provided with a sealing piece at the opening at the side wall of the lower valve body.

Furthermore, a thread section is arranged at the top end of the inner wall of the upper valve cavity.

Through the technical scheme, compared with the prior art, the reversing valve of the hydraulic jack is provided, the surface of the reversing valve main body is arranged to be in the regular polygon prism shape, so that the machining and the accurate positioning of hole sites are facilitated, the hole sites can be conveniently positioned due to the polygon prism shape during the installation, the machining is fast and accurate, the machining is simple and convenient, the structure is reasonable, an oil pipeline is optimized, and the reversing valve has a better working effect.

Drawings

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

FIG. 1 is a general structure diagram of a hydraulic jack directional control valve of the present invention;

FIG. 2 is a bottom hole position layout diagram of a hydraulic jack directional control valve of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

Example 1

As shown in the attached figure 1, the reversing valve of the hydraulic jack comprises a valve body, wherein the valve body is in a regular polygonal prism shape, a regular hexagonal prism is adopted in the embodiment, the valve body comprises an upper valve body 1 and a lower valve body 2 which are integrally arranged, an upper valve cavity 11 is arranged in the upper valve body 1, the top surface of the upper valve cavity 11 is open, and the bottom surface of the upper valve cavity is the top surface of the lower valve body 2;

the lower valve body 2 is provided with a thimble groove 3 and a first vertical pipeline 4 which are sequentially communicated along the central axis direction, the thimble groove 3 is communicated with the upper valve cavity 11, and the first vertical pipeline 4 is provided with a first one-way valve port; the first vertical pipeline 4 comprises a first wide section 41 and a first narrow section 42 which are sequentially arranged, a first one-way valve port is arranged at the joint of the first wide section 41 and the first narrow section 42, and the first narrow section 42 is communicated with the thimble groove 3;

an oil delivery hole 5 is formed in the side wall of the lower valve body 2, the oil delivery hole 5 is communicated with a second vertical pipeline 6 through an oil delivery pipeline 51, and the oil delivery hole 5 is communicated with the thimble groove 3 through an oil return pipeline 52; a second one-way valve port is arranged on the second vertical pipeline 6;

the second vertical pipeline 6 comprises a second wide section 61 and a second narrow section 62 which are sequentially arranged, a second one-way valve port is arranged at the joint of the second wide section 61 and the second narrow section 62, and the second narrow section 62 is communicated with the oil pipeline 51; the first wide diameter section 41 and the second wide diameter section 61 are communicated through the horizontal pipe 7;

a third check valve port is arranged on the horizontal pipeline 7, and the joint of the horizontal pipeline 7 and the first wide-diameter section 41 is the third check valve port;

the first wide diameter section 41 and the second wide diameter section 61 are both communicated to the lower surface of the lower valve body.

A threaded hole 8 is formed in the side wall of the lower valve body 2, the threaded hole 8 is communicated with the horizontal pipeline 7, the inner diameter of the threaded hole 8 is larger than that of the horizontal pipeline 7, and a sealing element is arranged at an opening of the threaded hole 8, which is located at the side wall of the lower valve body 2;

the first wide section 41 is internally provided with a first spring 43, the top end of the first spring 43 is abutted against a first steel ball 44 to a first one-way valve port, the second wide section 61 is internally provided with a second spring 63, the top end of the second spring 63 is abutted against a second steel ball 64 to a second one-way valve port, the threaded hole 8 is internally provided with a third spring 81, and the end part of the third spring 81 is abutted against a third steel ball 82 to a third one-way valve port.

The working principle of the technical scheme is as follows: after the spring and the steel balls are assembled, the steel balls at the openings of the check valves are pre-pressed, and good sealing performance of the steel balls and contact surfaces is ensured; then, the thimble is placed in the thimble hole 3, the piston is matched in the upper valve cavity 11 and the sealing cover is fixed, the threaded hole 8 is sealed by adopting a sealing piece, the hole of the second wide-diameter section 61 on the lower surface of the lower valve body is communicated with the increasing pump, the hole of the first wide-diameter section 41 on the lower surface of the lower valve body is communicated with the jack, and the oil delivery hole 5 is communicated with the mailbox; after the jack starts to work, hydraulic oil firstly enters the booster pump through the oil pipeline 51 and the second vertical pipeline 6, after the booster pump boosts pressure, the second vertical pipeline 6 is closed through the second steel ball 64, backflow of the hydraulic oil is avoided, the third steel ball 82 in the horizontal pipeline 7 is opened, the first steel ball 44 in the first vertical pipeline 4 is closed, and the hydraulic oil enters the jack through the horizontal pipeline 7 and the first wide-diameter section 41 of the first vertical pipeline 4; when the booster pump returns oil, under the action of oil pressure and a spring in the jack, the first steel ball 44 and the third steel ball 82 are closed, so that hydraulic oil in the jack is not leaked, the returned oil in the booster pump is supplemented through the oil pipeline 51 and the second vertical pipeline 6, and the oil in the oil tank continuously enters the jack oil cylinder to realize the continuous reciprocating operation of the booster pump; when the lifting jack needs to fall back, the first steel ball 44 is jacked open by the lifting jack through air pressure, so that the hydraulic oil in the lifting jack cylinder returns to the oil tank through the first vertical pipeline 4 and the oil return pipeline 52.

In some specific technical solutions, the top end of the inner wall of the upper valve cavity 11 is provided with a threaded section 111 for facilitating connection.

As shown in the attached figure 2, the arrangement of the hole sites on the bottom surface of the reversing valve of the hydraulic jack is schematic, the hole sites are reasonable in design and convenient to process and install.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The reversing valve for the hydraulic jack comprises a valve body and is characterized in that the valve body is a regular polygonal prism, the valve body comprises an upper valve body (1) and a lower valve body (2) which are integrally arranged, an upper valve cavity (11) is arranged in the upper valve body (1), the top surface of the upper valve cavity (11) is opened, and the bottom surface of the upper valve cavity is the top surface of the lower valve body (2);

the lower valve body (2) is provided with a thimble groove (3) and a first vertical pipeline (4) which are sequentially communicated along the central axis direction, the thimble groove (3) is communicated with the upper valve cavity (11), and the first vertical pipeline (4) is provided with a first one-way valve port;

an oil conveying hole (5) is formed in the side wall of the lower valve body (2), the oil conveying hole (5) is communicated with a second vertical pipeline (6) through an oil conveying pipeline (51), and the oil conveying hole (5) is communicated with the thimble groove (3) through an oil return pipeline (52);

a second one-way valve port is arranged on the second vertical pipeline (6);

the first vertical pipeline (4) is communicated with the lower part of a second one-way valve port of the second vertical pipeline (6) through a horizontal pipeline (7) below the first one-way valve port, and a third one-way valve port is arranged on the horizontal pipeline (7);

the first vertical pipeline (4) and the second vertical pipeline (6) are communicated to the lower surface of the lower valve body;

the first vertical pipeline (4) comprises a first wide section (41) and a first narrow section (42) which are sequentially arranged, a first one-way valve port is arranged at the joint of the first wide section (41) and the first narrow section (42), and the first narrow section (42) is communicated with the thimble groove (3);

the second vertical pipeline (6) comprises a second wide section (61) and a second narrow section (62) which are sequentially arranged, a second one-way valve port is arranged at the joint of the second wide section (61) and the second narrow section (62), and the second narrow section (62) is communicated with the oil pipeline (51);

the first wide section (41) and the second wide section (61) are communicated through the horizontal pipeline (7);

the joint of the horizontal pipeline (7) and the first wide-diameter section (41) is a third one-way valve port; the lower valve body (2) side wall is provided with a threaded hole (8), the threaded hole (8) is communicated with the horizontal pipeline (7), the inner diameter of the threaded hole (8) is larger than that of the horizontal pipeline (7), a third spring (81) is arranged in the threaded hole (8), and the end part of the third spring (81) is abutted against a third steel ball (82) to a third one-way valve opening.

2. The reversing valve of the hydraulic jack according to claim 1, wherein a first spring (43) is arranged in the first wide section (41), the top end of the first spring (43) abuts against a first steel ball (44) to a first one-way valve opening, a second spring (63) is arranged in the second wide section (61), the top end of the second spring (63) abuts against a second steel ball (64) to a second one-way valve opening, a third spring (81) is arranged in the threaded hole (8), and the end of the third spring (81) abuts against a third steel ball (82) to a third one-way valve opening.

3. A hydraulic jack reversing valve according to claim 1, characterized in that the threaded hole (8) has a seal at the opening at the side wall of the lower valve body (2).

4. The reversing valve of the hydraulic jack as claimed in claim 1, wherein the top end of the inner wall of the upper valve cavity (11) is provided with a threaded section (111).