CN212455603U

CN212455603U - Fast switching hydraulic rotary valve

Info

Publication number: CN212455603U
Application number: CN202020534646.9U
Authority: CN
Inventors: 余胜勇; 蔡刚
Original assignee: Chengdu Dayun Automobile Co Ltd
Current assignee: Chengdu Dayun Automobile Co Ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-02-02
Anticipated expiration: 2030-04-13

Abstract

The utility model provides a swiftly switch hydraulic pressure change-over valve relates to engineering machine tool hydraulic pressure change-over valve technical field. The problems that the prior hydraulic change-over valve causes internal abrasion due to internal rotation, causes untimely switching, causes equipment response failure and affects the lifting service performance of the whole machine are solved; the utility model discloses a support frame, handle, valve module, valve body, valve rod, end cover, position sleeve, reference column and hydraulic fluid port. The utility model is used for engineering tipper hydraulic pressure lifts the system, when changeing the valve to hydraulic pressure, gives the valve rod through the handle transmission, and valve rod and valve body cooperation can effectually swiftly switch the hydraulic pressure commentaries on classics valve, reach the purpose that realizes lifting the system switch fast and stably, simple structure, safe and reliable.

Description

Fast switching hydraulic rotary valve

Technical Field

The utility model relates to an engineering machine tool hydraulic pressure change-over valve technical field, concretely relates to swiftly switch hydraulic pressure change-over valve.

Background

The hydraulic rotary valve is one of important elements of a hydraulic system of engineering machinery, and the performance of the hydraulic rotary valve has a decisive influence on the control performance and the reliability of the whole machine. Currently, existing hydraulic switching valves typically have three ports, one inlet and two outlets, and when the internal spool is in different positions, the inlet communicates with the corresponding position. At present, hydraulic change-over valves all adopt a rotary structure, the inlets of the hydraulic change-over valves are communicated with corresponding outlets, manual external acting force is needed to be screwed on valve cores, internal abrasion is often caused due to internal rotation, switching is not timely, equipment is caused to respond correspondingly, and the lifting service performance of the whole machine is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic rotary valve capable of being switched quickly, which completes the hydraulic lifting process of a lifting system through the combined action of two oil ports, namely, the handle is acted by the action of an operator force to drive a valve rod to move rightwards, and the hydraulic rotary valve is closed, so that the hydraulic pressure of the lifting system is raised, and the lifting purpose is achieved; the valve rod moves leftwards under the action of the handle, the hydraulic rotary valve is opened, liquid oil enters from the oil outlet, flows through the oil outlet through a central hole in the valve rod and enters the oil cylinder, and the lifting system does not obtain oil supply, so that the pressure relief of the lifting system is completed. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

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

the utility model provides a swiftly switch hydraulic pressure and change valve, its characterized in that: the valve comprises a support frame, a handle, a valve component, a valve body, a valve rod, an end cover, a positioning sleeve, a positioning column and an oil port; wherein:

alternatively or preferably, the handle is disposed on the left side of the valve body, and the support bracket is located between the handle and the valve body.

Alternatively or preferably, the handle is movably connected with the support frame, and the support frame is fixedly connected with the valve body.

Alternatively or preferably, the valve stem is disposed within the valve body and one end of the valve stem is movably connected to the handle through the support bracket.

Optionally or preferably, an annular groove is formed in the valve rod, a central hole is formed in the valve rod, through holes are formed in two ends of the central hole, and the central distance between the through hole and the annular groove is equal to the central distance between the two oil ports.

Alternatively or preferably, the oil port comprises an oil inlet and an oil outlet, the annular groove is close to the oil inlet, and the through hole is close to the oil outlet, when the valve is opened and the positions of the through hole and the oil port are matched, the oil also enters the central hole from the oil inlet through the through hole and then flows out from the oil outlet.

Alternatively or preferably, the valve assembly is located inside the valve body and on the upper side of the valve stem.

Alternatively or preferably, one end of the valve assembly is connected with the oil port, and the other end of the valve assembly is fixedly connected with the left side of the valve body.

Optionally or preferably, the valve further comprises an end cover, the end cover is arranged on the right side of the valve body, a screw hole is formed in the bottom of the end cover, and the end cover is fixedly connected with the valve body through a screw.

Optionally or preferably, the positioning device further comprises a positioning sleeve and a positioning column, the positioning sleeve is arranged inside the end cover, and the outer side face of the positioning sleeve and the inner side face of the end cover are fastened through gluing.

Optionally or preferably, the positioning column is arranged at the end face in the positioning sleeve and is fastened with the inner side face of the positioning sleeve through gluing.

Optionally or preferably, a spring and a plurality of steel balls are arranged between the positioning column and the valve rod, and the steel balls are arranged at two ends of the spring.

Optionally or preferably, the valve further comprises an O-shaped sealing ring and a dust ring, wherein the O-shaped sealing ring sleeves the valve rod and is arranged between the valve body and the valve rod.

Optionally or preferably, the dust ring is mounted between the valve body and the end cap.

Optionally or preferably, a backing plate is arranged on the lower side of the valve body, two mounting holes for passing through the oil port are formed in the backing plate, and the backing plate is fixedly connected with the oil port through a nut.

Alternatively or preferably, the valve assembly is a one-way valve, and when the valve is closed and the oil pressure is higher than the opening pressure of the one-way valve, the oil enters from the oil inlet and flows out from the oil outlet through the valve assembly.

Optionally or preferably, a step is arranged in the positioning sleeve; the steel ball is connected with the positioning sleeve in a sliding manner.

Based on the technical scheme, the following technical effects can be generated:

the embodiment of the utility model provides a swiftly switch hydraulic pressure changes valve is applicable to engineering tipper hydraulic pressure lifting system, through the combined action of two hydraulic fluid ports, accomplishes the hydraulic pressure lift process of lifting system, receives the effect of operation personnel's power through the handle promptly, drives the valve rod and moves right, and hydraulic pressure changes the valve and closes to make the hydraulic pressure of lifting system rise, reach the lift purpose; the valve rod moves leftwards under the action of the handle, the hydraulic rotary valve is opened, liquid oil enters from the oil outlet, passes through a central hole in the valve rod and enters the oil cylinder through the oil outlet to complete pressure relief; the internal abrasion caused by the internal rotation of the hydraulic valve is effectively avoided, and the liquid oil reversing capability is improved, so that the lifting service performance is increased.

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 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 fast switching hydraulic rotary valve;

FIG. 2 is a diagram of an internal structure of a fast switching hydraulic rotary valve;

FIG. 3 is a simplified diagram of a hydraulic rotary valve installation for fast switching

In the figure: 1-a support frame; 2-a handle; 3-a valve assembly; 4-a valve body; 5-valve stem; 6-O type sealing ring; 7-a dustproof ring; 8-end cap; 9-positioning sleeve; 10-positioning a rod; 11-a spring; 12-steel balls; 13-a backing plate; 14-oil port; 1401-an oil inlet; 1402-oil outlet; 15-a valve core; 16-an annular groove; 17-a through hole; 18-a central aperture; 19-a hydraulic rotary valve; 20-oil cylinder; 21-lifting the system; 22-screw holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1:

the utility model provides a swiftly switch hydraulic pressure and change valve, its characterized in that: the valve comprises a support frame 1, a handle 2, a valve component 3, a valve body 4, a valve rod 5, an end cover 8, a positioning column 10 and two oil ports 14; wherein: the handle 2 is arranged on the left side of the valve body 4, and the support frame 1 is positioned between the handle 2 and the valve body 4; the handle 2 is movably connected with the support frame 1, and the support frame 1 is fixedly connected with the valve body 4; the valve rod 5 is arranged in the valve body 4, and one end of the valve rod 5 penetrates through the support frame 1 and is movably connected with the handle 2; an annular groove 16 is formed in the valve rod 5, a central hole 18 is formed in the valve rod 5, through holes 17 are formed in two ends of the central hole 18, and the central distance between the through holes 17 and the annular groove 16 is equal to the central distance between the two oil ports 14; the oil port 14 comprises an oil inlet 1401 and an oil outlet 1402, the annular groove 16 is close to the oil inlet 1401, and the through hole 17 is close to the oil outlet 1402; the valve assembly 3 is arranged inside the valve body 4 and is positioned on the upper side of the valve rod 5; one end of the valve assembly 3 is connected with the oil port 14, and the other end is fixedly connected with the left side of the valve body 4.

As an optional embodiment, the valve further comprises an end cover 8, the end cover 8 is arranged on the right side of the valve body 4, the bottom of the end cover 8 is provided with a screw hole 22, and the end cover 8 is fixedly connected with the valve body 4 through a screw.

As an optional embodiment, the positioning device further comprises a positioning sleeve 9 and a positioning column 10, wherein the positioning sleeve 9 is placed inside the end cover 8, and the outer side face of the positioning sleeve 9 and the inner side face of the end cover 8 are fastened through gluing.

As an alternative embodiment, the positioning column 10 is placed at an end face inside the positioning sleeve 9 and is fastened with the inner side face of the positioning sleeve 9 by gluing.

As an alternative embodiment, a spring 11 and a plurality of steel balls 12 are arranged between the positioning column 10 and the valve rod 5, and the steel balls 12 are arranged at two ends of the spring 11.

As an optional embodiment, the valve further comprises an O-ring 6 and a dust ring 7, wherein the O-ring 6 is sleeved on the valve rod 5 and is arranged between the valve body 4 and the valve rod 5.

As an alternative embodiment, the dust ring 7 is mounted between the valve body 4 and the end cap 8.

As an alternative embodiment, a backing plate 13 is arranged on the lower side of the valve body 4, two mounting holes for passing through the oil port 14 are arranged on the backing plate 13, and the backing plate 13 and the oil port 14 are fixedly connected through a nut.

As an alternative embodiment, the valve assembly 3 is a one-way valve.

As an alternative embodiment, the steel ball 11 is slidably connected with the positioning sleeve 9.

The utility model discloses an in the embodiment, a swiftly switch 19 working processes of hydraulic pressure change valve as follows: the handle 2 is acted by the force of an operator to drive the valve rod 5 to move rightwards, the valve rod 5 pushes the steel ball 12 to return to the side of the positioning column 10, the valve rod 5 seals an oil circuit, the hydraulic rotary valve 19 is closed, the lifting system 21 supplies oil, and hydraulic pressure is lifted, so that the lifting purpose is achieved; the valve rod 5 moves leftwards, the hydraulic rotary valve 19 is opened, so that the through hole 17 is communicated with the oil inlet 1401 and the oil outlet 1402, the annular groove 16 is positioned at the oil outlet 1402, the spring 11 and the steel ball 12 move leftwards along with the valve rod 5 and enter the step of the positioning sleeve 9 to prevent the valve rod 5 from moving backwards under the action of hydraulic pressure, liquid oil flows into the hydraulic rotary valve 19 from the oil inlet 1401, flows out of the oil outlet 1402 and enters the oil cylinder 20 through a gap between the central hole 18 and the annular groove 16 and a valve body, and therefore the lifting system 21 does not supply oil, and the purpose of pressure relief of the lifting system 21 is achieved; when the pressure of the lifting system 21 exceeds the set pressure of the valve assembly 3, the liquid oil will flow through the valve assembly 3 and enter the oil cylinder 20 from the clearance between the annular groove 16 and the valve body through the oil outlet 1402, so as to prevent the pressure from being too high.

Claims

1. The utility model provides a swift hydraulic pressure of switching changes valve which characterized in that: the hydraulic control valve comprises a support frame (1), a handle (2), a valve component (3), a valve body (4), a valve rod (5), an end cover (8), a positioning column (10) and two oil ports (14); wherein: the handle (2) is arranged on one side of the valve body (4), and the support frame (1) is positioned between the handle (2) and the valve body (4); the handle (2) is movably connected with the support frame (1), and the support frame (1) is fixedly connected with the valve body (4); the valve rod (5) is arranged in the valve body (4), and one end of the valve rod (5) penetrates through the support frame (1) and is movably connected with the handle (2); an annular groove (16) is formed in the valve rod (5), a central hole (18) is formed in the valve rod (5), through holes (17) are formed in two ends of the central hole (18), and the central distance between the through holes (17) and the annular groove (16) is equal to the central distance between the two oil ports (14); the oil port (14) comprises an oil inlet (1401) and an oil outlet (1402), the annular groove (16) is close to the oil inlet (1401), and the through hole (17) is close to the oil outlet (1402); the valve component (3) is arranged in the valve body (4) and is positioned on the upper side of the valve rod (5); one end of the valve component (3) is connected with the oil port (14), and the other end of the valve component (3) is fixedly connected with the left side of the valve body (4).

2. The quick-change hydraulic rotary valve according to claim 1, characterized in that: still include end cover (8), valve body (4) right side is arranged in end cover (8), end cover (8) bottom is equipped with screw hole (22), and end cover (8) pass through screw fixed connection with valve body (4).

3. The quick-change hydraulic rotary valve according to claim 1, characterized in that: the positioning device is characterized by further comprising a positioning sleeve (9) and a positioning column (10), wherein the positioning sleeve (9) is arranged inside the end cover (8), and the outer side surface of the positioning sleeve (9) is fastened with the inner side surface of the end cover (8) through gluing; the positioning column (10) is arranged on the end face in the positioning sleeve (9) and is fastened with the inner side face of the positioning sleeve (9) through gluing.

4. The quick-change hydraulic rotary valve according to claim 1, characterized in that: a spring (11) and a plurality of steel balls (12) are arranged between the positioning column (10) and the valve rod (5), and the steel balls (12) are arranged at two ends of the spring (11).

5. The quick-change hydraulic rotary valve according to claim 2, characterized in that: the valve rod (5) is sleeved with the O-shaped sealing ring (6) and the dust ring (7), and the O-shaped sealing ring (6) is arranged between the valve body (4) and the valve rod (5); the dust ring (7) is arranged between the valve body (4) and the end cover (8).

6. The quick-change hydraulic rotary valve according to claim 1, characterized in that: the lower side of the valve body (4) is provided with a backing plate (13), the backing plate (13) is provided with two mounting holes for penetrating through the oil port (14), and the backing plate (13) is fixedly connected with the oil port (14) through a nut.