CN212643212U

CN212643212U - Reversing valve capable of realizing sequential actions of hydraulic cylinder and hydraulic system

Info

Publication number: CN212643212U
Application number: CN202021359796.7U
Authority: CN
Inventors: 刘玉保; 周生震
Original assignee: Shandong Weishi Automobile Manufacturing Co ltd
Current assignee: Shandong Weishi Automobile Manufacturing Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-03-02
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a can realize switching-over valve and hydraulic system that pneumatic cylinder was successively moved, which comprises a housin, the casing is provided with first oil inlet, second oil inlet and oil return opening, movable mounting has the case that is used for switching second oil inlet and oil return opening break-make state in the casing, the wherein one end protrusion in the casing of case, the other end of case is provided with resetting means. The reversing valve is simple and compact in structure and reliable in action. The valve seat is communicated with the hydraulic cylinder, the valve core is driven by the hydraulic cylinder, and sequential action of the hydraulic cylinders can be realized.

Description

Reversing valve capable of realizing sequential actions of hydraulic cylinder and hydraulic system

Technical Field

The utility model relates to the field of mechanical devices, especially, relate to a can realize switching-over valve and hydraulic system of pneumatic cylinder action successively.

Background

In the hydraulic mechanism, hydraulic oil cylinders are adopted in a plurality of places, and when two cylinders or a plurality of cylinders are required to act in sequence in the same device, the system control requirements can be realized through hydraulic elements such as a mechanical device, a logic circuit, a hydraulic loop control hydraulic cylinder, an electromagnetic directional valve and the like. These methods all make the system more complex, reduce reliability and increase cost.

Disclosure of Invention

To these problems, the utility model discloses a can realize switching-over valve and hydraulic system of pneumatic cylinder successively action, this switching-over valve simple structure is compact, the action is reliable. The valve seat is communicated with the hydraulic cylinder, the valve core is driven by the hydraulic cylinder, and sequential action of the hydraulic cylinders can be realized.

The reversing valve capable of achieving sequential action of the hydraulic cylinder comprises a shell, wherein the shell is provided with a first oil inlet, a second oil inlet and an oil return port, a valve core used for switching the on-off state of the second oil inlet and the oil return port is movably mounted in the shell, one end of the valve core protrudes out of the shell, and a reset device is arranged at the other end of the valve core.

Preferably, the first oil inlet is communicated with the oil return opening.

Preferably, the return means is a spring.

Preferably, the spring is connected with a valve plug, and the valve plug is connected with the shell.

Preferably, the protruding end of the valve core is sleeved with a valve cap.

Preferably, the bonnet is slidably connected to the housing.

Preferably, a plurality of first sealing rings are arranged between the valve cap and the shell.

Preferably, a second sealing ring is arranged between the valve core and the shell.

Preferably, a third sealing ring is arranged between the valve plug and the shell.

The utility model also discloses a can realize hydraulic system that pneumatic cylinder was successively moved, including hydraulic pump, a plurality of as above switching-over valve and a plurality of pneumatic cylinder, the oil inlet intercommunication of hydraulic pump and pneumatic cylinder, the oil return opening of every pneumatic cylinder all feeds through a switching-over valve, the oil return opening and the oil tank intercommunication of first switching-over valve, the second oil inlet of first switching-over valve and the oil return opening intercommunication of second switching-over valve, the second oil inlet of second switching-over valve and the oil return opening intercommunication of third switching-over valve.

The utility model has the advantages that:

the utility model discloses by the mechanical structure of pneumatic cylinder tip backs down the valve cap, the intercommunication of control pneumatic cylinder and main oil circuit accomplishes the action requirement of next pneumatic cylinder. The continuous action control of a plurality of hydraulic cylinders is realized through a simple valve body structure, the cost is low, and the reliability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a structural diagram of a reversing valve of the present invention;

FIG. 2 is a schematic structural diagram of the hydraulic system of the present invention;

in the figure, 1, a valve cap, 2, a valve core, 3, a second sealing ring, 4, a valve plug, 5, a spring, 6, a third sealing ring, 7, a shell, 8, a first sealing ring, I, a first hydraulic cylinder, II, a first reversing valve, III, a second reversing valve, IV, a second hydraulic cylinder, V, a third hydraulic cylinder, VI, a third reversing valve, VII, a hydraulic pump, A, a second oil inlet, B, an oil return port, C and a first oil inlet.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

As shown in figure 1, the utility model discloses a reversing valve capable of realizing the successive actions of a hydraulic cylinder, a stepped cavity penetrating through the left side and the right side of the shell is arranged in a shell 7 of the reversing valve, the upper side and the lower side of the cavity are communicated with three ports communicated with the outside, namely a first oil inlet C, a second oil inlet A and an oil return port B, wherein the first oil inlet and the oil return port are coaxially arranged and are communicated with the smaller diameter end of the stepped cavity, the second oil inlet is communicated with the larger diameter end of the stepped cavity, a valve core 2 is arranged in the stepped cavity, the valve core is of a stepped structure with the diameter of the middle part larger than that of the two end parts, the middle part is matched and connected with the stepped cavity, the valve core moves leftwards, the second oil inlet is communicated with the oil return port, the valve core moves rightwards to the stepped part to be matched with the shell, the, and a second sealing ring is arranged at the joint of the valve core and the step of the shell to enhance the sealing property.

The left end of the valve core is coaxially provided with a blind hole, a spring 5 is arranged in the blind hole, and the spring is a pressure spring and used for resetting the valve core. The left end of the spring is connected with a valve plug 4, and the valve plug 4 is installed at the left end of the shell 7. And a third sealing ring 6 for enhancing the leak-proof performance is arranged between the valve plug and the shell.

The right-hand member cover of case is equipped with valve cap 1, and this valve cap protrusion is outside the casing, valve cap and casing sliding connection are provided with twice first sealing washer 8 between valve cap and the casing. And the valve core separates the second oil inlet A from the oil return opening B in a static state, and when the hydraulic cylinder moves, the valve core is pushed to the valve cap, and the valve cap drives the valve core to move leftwards, so that the second oil inlet A is communicated with the oil return opening B.

The utility model discloses still disclose a hydraulic system that can realize that the pneumatic cylinder moves successively as shown in fig. 2, this system includes hydraulic pump VII, three as above switching-over valve and three pneumatic cylinder, hydraulic pump VII communicates first pneumatic cylinder I respectively through the pipeline, second pneumatic cylinder IV, and third pneumatic cylinder V's oil inlet, the oil return opening of every pneumatic cylinder all communicates a switching-over valve as shown in fig. 1, the oil return opening of first pneumatic cylinder I communicates with first oil inlet C of first switching-over valve II promptly, the oil return opening B and the oil tank intercommunication of first switching-over valve II, the second oil inlet A of first switching-over valve II communicates with the oil return opening B of second switching-over valve III, the second oil inlet A of second switching-over valve III communicates with the oil return opening B of third switching-over valve VI, the first oil inlet of second switching-over valve III communicates with the oil return opening of second pneumatic cylinder IV. And a first oil inlet C of the third reversing valve VI is communicated with an oil return opening of the third hydraulic cylinder V, and a second oil inlet A of the third reversing valve VI is blocked by a plug. And if more hydraulic cylinders need to be expanded, taking down the plug, communicating the second oil inlet A of the third reversing valve VI with the new reversing valve oil return opening B, and communicating the new hydraulic cylinder at the first oil inlet.

When the hydraulic system works, hydraulic oil enters an oil inlet of a first hydraulic cylinder through an oil pump, the hydraulic cylinder is pushed to move rightwards, the hydraulic oil in the hydraulic cylinder enters a mailbox through a first oil inlet and an oil return port of a first reversing valve, when the hydraulic cylinder is pushed to a bonnet of the first reversing valve, a valve core is pushed to move rightwards, a second oil inlet is communicated with the oil return port, the hydraulic oil in a second hydraulic cylinder enters the first reversing valve through a first oil inlet C and an oil return port B of the second reversing valve and is communicated with the mailbox, at the moment, the second hydraulic cylinder also moves rightwards, when the hydraulic cylinder moves to prop against the bonnet of the second reversing valve, a second oil inlet A and an oil return port B of the second reversing valve are communicated, and a third hydraulic cylinder starts.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. 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 application. Thus, the present application 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 capable of achieving sequential actions of the hydraulic cylinder is characterized by comprising a shell, wherein the shell is provided with a first oil inlet, a second oil inlet and an oil return port, a valve core used for switching on-off states of the second oil inlet and the oil return port is movably mounted in the shell, one end of the valve core protrudes out of the shell, and the other end of the valve core is provided with a resetting device.

2. The reversing valve capable of achieving sequential actions of a hydraulic cylinder according to claim 1, wherein the first oil inlet is communicated with the oil return port.

3. The reversing valve capable of achieving sequential actions of a hydraulic cylinder according to claim 1, wherein the return device is a spring.

4. The reversing valve capable of achieving sequential actions of a hydraulic cylinder according to claim 3, wherein the spring is connected with a valve plug, and the valve plug is connected with the shell.

5. The reversing valve capable of achieving sequential actions of the hydraulic cylinder according to claim 4, wherein a third sealing ring is arranged between the valve plug and the shell.

6. The reversing valve capable of realizing sequential actions of a hydraulic cylinder as claimed in claim 1, wherein a valve cap is sleeved on the protruding end of the valve core.

7. The reversing valve for sequence of hydraulic cylinder events as in claim 6, wherein said bonnet is slidably connected to said housing.

8. The reversing valve capable of achieving sequential actions of a hydraulic cylinder according to claim 6, wherein a plurality of first sealing rings are arranged between the valve cap and the shell.

9. The reversing valve capable of achieving sequential actions of a hydraulic cylinder according to claim 8, wherein a second sealing ring is arranged between the valve core and the shell.

10. A hydraulic system capable of realizing sequential actions of hydraulic cylinders is characterized by comprising a hydraulic pump, a plurality of reversing valves according to any one of claims 1 to 9 and a plurality of hydraulic cylinders, wherein the hydraulic pump is communicated with oil inlets of the hydraulic cylinders, an oil return port of each hydraulic cylinder is communicated with one reversing valve, an oil return port of a first reversing valve is communicated with an oil tank, a second oil inlet of the first reversing valve is communicated with an oil return port of a second reversing valve, and a second oil inlet of the second reversing valve is communicated with an oil return port of a third reversing valve.