CN210769616U - Modularization power hydraulic pressure multiple unit valve of shifting - Google Patents
Modularization power hydraulic pressure multiple unit valve of shifting Download PDFInfo
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- CN210769616U CN210769616U CN201921983544.9U CN201921983544U CN210769616U CN 210769616 U CN210769616 U CN 210769616U CN 201921983544 U CN201921983544 U CN 201921983544U CN 210769616 U CN210769616 U CN 210769616U
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Abstract
The utility model discloses a modularized power gear shifting hydraulic multi-way valve, which comprises a head-connected valve body and a tail-connected valve body, wherein a plurality of intermediate-connected valve bodies are connected in series between the head-connected valve body and the tail-connected valve body; the multi-way valve has remarkable modularization characteristics, and the number of intermediate valve bodies can be determined according to the gear requirement of a vehicle; each intermediate coupler controls one gear shifting clutch, each intermediate coupler works independently without mutual interference, combination and separation of any two clutches can be realized, combination and separation of a plurality of clutches can also be realized, and the clutch control device is suitable for power gear shifting clutch control of various power routes.
Description
Technical Field
The utility model relates to a hydraulic control technical field especially relates to a modularization power hydraulic pressure multiple unit valve that shifts.
Background
The power shifting technology is one of key core technologies of modern agricultural machinery equipment which is represented by a high-horsepower tractor. With the continuous deepening of the agricultural modernization process, in order to reduce the operation intensity and improve the operation efficiency and the man-machine interactive operation level, a power gear shifting gearbox controlled by a power gear shifting multi-way valve becomes the standard allocation of modern agricultural machinery equipment more and more. As the core of power shift gearbox control, the power shift multi-way valve belongs to the core basic hydraulic component of high-end agricultural machinery equipment, and the quality of the performance of the power shift multi-way valve directly influences the shift performance of the power shift gearbox and then influences the operation performance of the agricultural machinery equipment. The existing power gear shifting hydraulic valve is of an integral structure, an internal oil duct is complex, the cost is high, the maintenance convenience is poor, each group of valve blocks is only suitable for power gear shifting control of one vehicle type, and the modular design concept is not met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a modularization power hydraulic pressure multi-way valve of shifting that stable performance, usage are wide is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: a modularized power gear-shifting hydraulic multi-way valve comprises a head-connected valve body and a tail-connected valve body, wherein a plurality of middle-connected valve bodies are connected in series between the head-connected valve body and the tail-connected valve body;
the head-connected valve body is provided with an oil inlet and a pressure measuring interface, a head-connected oil inlet channel facing the opening of the middle-connected valve body is arranged in the head-connected valve body, the oil inlet and the pressure measuring interface are both communicated with the head-connected oil inlet channel, and a head-connected oil return channel penetrating through the head-connected valve body is arranged in the head-connected valve body;
a middle valve cavity is arranged in the middle valve body, a middle valve core is arranged in the middle valve cavity, and a middle driving device for controlling the middle valve core to act is arranged on the middle valve body; the middle joint valve body is internally provided with a middle joint oil inlet channel and a middle joint oil return channel which penetrate through the middle joint valve body and are communicated with the middle joint valve cavity, and the middle joint valve body is provided with a working oil port and a pressure measuring interface which are communicated with the middle joint valve cavity;
a tail valve cavity is arranged in the tail valve body, a tail valve core is arranged in the tail valve cavity, and a tail driving device for controlling the action of the tail valve core is arranged on the tail valve body; the tail-linked valve body is provided with a tail-linked oil inlet channel and a tail-linked oil return channel facing the opening of the middle-linked valve body, and the tail-linked oil inlet channel and the tail-linked oil return channel are both communicated with the tail-linked valve cavity;
the first-joint oil inlet channel, the middle-joint oil inlet channel and the tail-joint oil inlet channel are communicated, and the first-joint oil return channel, the middle-joint oil return channel and the tail-joint oil return channel are communicated.
As a preferred technical scheme, the intermediate linkage driving device comprises an intermediate linkage electromagnet which is arranged on the intermediate linkage valve body and is in transmission connection with one end of the intermediate linkage valve core, a spring end cover for plugging the intermediate linkage valve cavity is arranged on the intermediate linkage valve body at the other end of the intermediate linkage valve core, and an intermediate linkage return spring is arranged between the spring end cover and the intermediate linkage valve core.
As a preferred technical scheme, the intermediate electromagnet is a proportional electromagnet.
As a preferred technical scheme, a load sensing channel communicated with the working oil port and the pressure measuring interface is arranged in the middle connecting valve body, and a detachable plug is installed at a port of the load sensing channel.
As a preferred technical scheme, the intermediate coupling valve core comprises an intermediate coupling shaft, a shaft shoulder for controlling the on-off of the working oil port and the intermediate coupling valve cavity is arranged on the intermediate coupling shaft, a spring seat in sliding fit with the inner wall of the intermediate coupling valve cavity is arranged at one end of the intermediate coupling shaft, and a guide seat in sliding fit with the inner wall of the intermediate coupling valve cavity is arranged at the other end of the intermediate coupling shaft.
As a preferable technical scheme, a plurality of U-shaped grooves for buffering hydraulic impact are symmetrically arranged on the shaft shoulder.
As a preferred technical scheme, the tail-linked driving device comprises a tail-linked electromagnet which is arranged on the tail-linked valve body and is in transmission connection with one end of the tail-linked valve core, and a tail-linked return spring is arranged between the other end of the tail-linked valve core and the closed bottom end of the tail-linked valve cavity.
As a preferred technical scheme, the bottom ends of the head-connected valve body and the tail-connected valve body are respectively provided with a mounting seat extending to two sides of the valve body, and each mounting seat is provided with a mounting hole positioned at two sides of the head-connected valve body or the tail-connected valve body.
Due to the adoption of the technical scheme, the modular power gear-shifting hydraulic multi-way valve comprises a head-connected valve body and a tail-connected valve body, wherein a plurality of middle-connected valve bodies are connected in series between the head-connected valve body and the tail-connected valve body; the multi-way valve has remarkable modularization characteristics, and the number of intermediate valve bodies can be determined according to the gear requirement of a vehicle; each intermediate coupler controls one gear shifting clutch, each intermediate coupler works independently without mutual interference, combination and separation of any two clutches can be realized, combination and separation of a plurality of clutches can also be realized, and the clutch control device is suitable for power gear shifting clutch control of various power routes.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention including four intermediate coupling valve bodies;
FIG. 2 is a schematic structural view of a first-connection valve body according to an embodiment of the present invention;
FIG. 3 is a sectional view of a first-coupling valve body according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an intermediate valve body according to an embodiment of the present invention;
fig. 5 is a sectional view of an intermediate valve body according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intermediate valve element in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a tail-coupled valve body according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a tail valve body according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a tail valve core according to an embodiment of the present invention;
FIG. 10 is a hydraulic schematic of an embodiment of the present invention;
fig. 11 is a flow chart of the operation of an embodiment of the present invention;
in the figure: 11-a first-joint valve body; 12-an oil inlet; 13-first connecting oil inlet channel; 14-a first-connection oil return channel; 15-pressure measuring interface; 21-intermediate valve body; 22-middle joint valve cavity; 23-intermediate valve core; 24-an intermediate oil inlet channel; 25-a working oil port; 26-intermediate oil return channel; 31-an intermediate electromagnet; 32-spring end caps; 33-middle linkage return spring; 41-intermediate coupling shaft; 42-shaft shoulder; 43-U-shaped groove; 44-spring seats; 45-a guide seat; 51-a tail valve body; 52-tail valve cavity; 53-a tail valve core; 54-tail joint oil inlet channel; 55-tail oil return channel; 56-tail electromagnet; 57-tail return spring; 61-a mounting seat; 62-mounting holes; 71-load sensitive channel; 72-plug screw.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 and 10, a modular power shift hydraulic multi-way valve comprises a head-connected valve body 11 and a tail-connected valve body 51, wherein a plurality of intermediate-connected valve bodies 21 are connected in series between the head-connected valve body 11 and the tail-connected valve body 51;
as shown in fig. 2 and 3, an oil inlet 12 and a pressure measuring connector 15 are arranged on the first-connection valve body 11, a first-connection oil inlet channel 13 facing the opening of the middle-connection valve body 21 is arranged in the first-connection valve body 11, the oil inlet 12 and the pressure measuring connector 15 are both communicated with the first-connection oil inlet channel 13, and a first-connection oil return channel 14 penetrating through the first-connection valve body 11 is arranged in the first-connection valve body 11;
as shown in fig. 4 and 5, a middle valve coupling cavity 22 is arranged in the middle valve coupling body 21, a middle valve coupling core 23 is arranged in the middle valve coupling cavity 22, and a middle driving device for controlling the middle valve coupling core 23 to move is arranged on the middle valve coupling body 21; the middle valve body 21 is internally provided with a middle oil inlet channel 24 and a middle oil return channel 26 which penetrate through the middle valve body 21 and are communicated with the middle valve cavity 22, and the middle valve body 21 is provided with a working oil port 25 and a pressure measuring interface 15 which are communicated with the middle valve cavity 22;
the intermediate linkage driving device comprises an intermediate linkage electromagnet 31 which is arranged on the intermediate linkage valve body 21 and is in transmission connection with one end of the intermediate linkage valve core 23, and the intermediate linkage electromagnet 31 is a proportional electromagnet. The intermediate valve body 21 at the other end of the intermediate valve core 23 is provided with a spring end cover 32 for plugging the intermediate valve cavity 22, and an intermediate return spring 33 is arranged between the spring end cover 32 and the intermediate valve core 23. A load sensitive channel 71 communicated with the working oil port 25 and the pressure measuring interface 15 is arranged in the middle joint valve body 21, and a detachable plug 72 is installed at a port of the load sensitive channel 71. An O-shaped sealing ring is arranged between the spring end cover 32 and the intermediate valve body 21, and an O-shaped sealing ring is also arranged between the intermediate electromagnet 31 and the intermediate valve body 21.
As shown in fig. 6, the intermediate coupling valve element 23 includes an intermediate coupling shaft 41, a shaft shoulder 42 for controlling the on-off of the working oil port 25 and the intermediate coupling chamber 22 is disposed on the intermediate coupling shaft 41, and a plurality of U-shaped grooves 43 for buffering hydraulic impact are symmetrically disposed on the shaft shoulder 42; one end of the middle coupling shaft 41 is provided with a spring seat 44 in sliding fit with the inner wall of the middle coupling valve cavity 22, and the other end of the middle coupling shaft 41 is provided with a guide seat 45 in sliding fit with the inner wall of the middle coupling valve cavity 22.
As shown in fig. 7, 8 and 9, a tail valve cavity 52 is arranged in the tail valve body 51, a tail valve core 53 is arranged in the tail valve cavity 52, and a tail driving device for controlling the motion of the tail valve core 53 is arranged on the tail valve body 51; the tail-coupled valve body 51 is provided with a tail-coupled oil inlet passage 54 and a tail-coupled oil return passage 55 which face the opening of the middle-coupled valve body 21, and the tail-coupled oil inlet passage 54 and the tail-coupled oil return passage 55 are both communicated with the tail-coupled valve cavity 52; the head-coupled oil inlet passage 13, the middle-coupled oil inlet passage 24 and the tail-coupled oil inlet passage 54 are communicated, and the head-coupled oil return passage 14, the middle-coupled oil return passage 26 and the tail-coupled oil return passage 55 are communicated.
The tail-linked driving device comprises a tail-linked electromagnet 56 which is arranged on the tail-linked valve body 51 and is in transmission connection with one end of the tail-linked valve core 53, the tail-linked electromagnet 56 can be a common electromagnet, and a tail-linked return spring 57 is arranged between the other end of the tail-linked valve core 53 and the closed bottom end of the tail-linked valve cavity 52.
The bottom of first-connection valve body 11 with the tail-connection valve body 51 all is provided with the mount pad 61 that extends to the both sides of valve body, every be provided with on the mount pad 61 and be located first-connection valve body 11 or the mounting hole 62 of tail-connection valve body 51 both sides.
The utility model provides a modularization power hydraulic pressure multiple unit valve that shifts has typical modular structure characteristic, and different modules are used for controlling the clutch of shifting of different gears respectively. All modules cooperate with each other to jointly meet the requirements of stable and quick power gear shifting functions.
The oil inlet 12 on the first-joint valve body 11 is an inlet of an external hydraulic oil inlet valve group; the pressure measuring interface 15 is used for detecting the total working pressure of the power gear shifting valve control system; the oil inlet 12 and the pressure measuring interface 15 are standard hydraulic interfaces so as to facilitate the connection of a hydraulic pipeline; hydraulic oil enters the first-joint oil inlet channel 13 through the oil inlet 12, then enters the subsequent intermediate-joint module and returns to the oil tank through the oil return channel; a plurality of connecting holes for fixedly connecting the valve group are uniformly distributed on the head-connected valve body 11, the middle-connected valve body 21 and the tail-connected valve body 51; the mounting holes 62 on the head valve body 11 and the tail valve body 51 are used for mounting the valve group;
the middle joint is a control valve block of each gear of power shifting, electro-hydraulic proportional control is adopted, each middle joint controls a cylinder piston of a power shifting clutch, and the middle joints are controlled by a controller program, so that the middle joints can work independently or cooperatively; the structure of the valve comprises a middle valve body 21, a middle valve core 23 and the like; the working oil port 25 arranged on the middle valve body 21 is externally connected with a power gear-shifting control clutch, hydraulic oil flows out through the working oil port 25 and working pressure is built in the clutch, so that gear-shifting control is realized; the pressure measuring interface 15 of the intermediate valve body 21 is used for detecting the power gear shifting working pressure of the corresponding gear; the intermediate oil inlet channel 24 is directly connected with the first oil inlet channel 13; the intermediate oil return passage 26 is directly connected with the head oil return passage 14; the load sensitive channel 71 is used for load sensitive control, and when the system needs to increase the load sensitive control demand, the system pressure can be led out through the channel, and the working pressure is detected in real time and used for system control.
The intermediate linkage valve core 23 is used for controlling the on-off of an oil path; the right side of the electromagnetic valve is connected with a proportional electromagnet, and the left side of the electromagnetic valve is connected with a return spring; when the proportional electromagnet is electrified, the valve core moves leftwards, the working oil way is opened, and hydraulic oil from the middle joint oil inlet channel 24 enters the power shifting clutch through the working oil port 25; when the proportional electromagnet is powered off, the intermediate linkage valve core 23 moves to the right under the action of the intermediate linkage return spring 33, the working oil path is disconnected, the working oil port 25 is communicated with the intermediate linkage oil return channel 26, and hydraulic oil returns to the oil tank through the intermediate linkage oil return channel 26 to realize unloading; two sides of a shaft shoulder 42 of the middle coupling valve core 23 are provided with U-shaped grooves 43 so as to reduce hydraulic impact;
the tail joint is a normally open type switch valve, and the structure of the tail joint comprises a tail joint valve body 51 and a tail joint valve core 53; the tail valve body 51 structurally comprises a tail oil inlet channel, a tail oil return channel and a mounting hole 62; the tail joint oil inlet channel 54 is directly connected with the middle joint oil inlet channel 24; the tail oil return passage 55 is directly connected with the middle oil return passage 26; the connecting hole on the tail valve body 51 is used for connecting the valve group; the mounting hole 62 on the tail valve body 51 is used for mounting the valve group;
the tail valve core 53 is used for controlling the on-off of an oil inlet channel of the power gear shifting valve bank, the right side of the tail valve core is connected with a common electromagnet, and the left side of the tail valve core is connected with a return spring; when the electromagnet is not electrified, the valve core moves to the right under the action of the return spring, and the tail oil inlet channel 54 is directly connected with the tail oil return channel 55 to realize oil return of the hydraulic system; when the electromagnet is electrified, the valve core moves leftwards, and the tail oil inlet channel 54 and the tail oil return channel 55 are disconnected, so that the working pressure of the middle link can be normally established;
the utility model discloses use a certain four-speed power gearbox control of shifting as an example, ally oneself with valve body 21 in the middle of needing four altogether, control four power clutch cylinder bodies of shifting respectively, realize then shifting the control of gear to four powers.
Some pore passages can be generated in the valve body in the processing process, and some pore passages which do not need to be opened on the end surface of the valve body can be closed by adopting the plug 72, so that a closed oil passage environment is formed;
as shown in fig. 10 and 11, when the power shift valve group does not work, the intermediate electromagnet 31 and the tail electromagnet 56 are not energized, and at this time, hydraulic oil enters the head-coupled valve body 11 through the head-coupled oil inlet 12, enters each intermediate oil inlet channel 24 through the head-coupled oil inlet channel 13, enters the tail-coupled oil inlet channel 54, passes through the tail-coupled oil return channel 55, enters each intermediate oil return channel 26 and the head-coupled oil return channel 14, and finally returns to the oil tank, so that the circulation of the hydraulic system is realized; when the power-assisted gear shifting clutch works, firstly, the tail-linked electromagnet 56 is electrified, the tail-linked valve core 53 is closed, so that hydraulic oil cannot enter an oil tank through the tail-linked oil return channel 55, working pressure is generated in the middle-linked oil inlet channel 24, at the moment, the proportional electromagnet of the corresponding middle link is controlled to be electrified according to external control requirements, the corresponding middle-linked valve core 23 is opened, and the hydraulic oil can enter the corresponding power-assisted gear shifting clutch through the working oil port 25 of the corresponding middle link to realize gear hanging; during gear shifting, the tail linkage valve core 53 is kept still to keep the system pressure, the middle linkage valve core 23 of the current gear is opened according to the power gear shifting control logic, and meanwhile, the middle linkage valve core 23 of the gear to be combined is closed to finish the gear shifting action; when the gear is taken off, the intermediate valve core 23 of the current gear is opened to realize unloading, and then the tail valve core 53 is opened to finish the gear taking off action.
The utility model discloses following beneficial effect has:
1. when the power gear shifting valve group does not work, the intermediate-link proportional electromagnet and the tail-link electromagnet 56 are not electrified, at the moment, hydraulic oil enters the valve body through the oil inlet 12 of the head link, enters each intermediate link through the oil inlet channel, enters the oil channel of the tail link, and returns to the oil tank through the oil return channel of each intermediate link and the oil return channel of the head link, so that the circulation of a hydraulic system is realized; when the power-assisted gear shifting clutch works, firstly, the tail-linked electromagnet 56 is electrified, the tail-linked valve core 53 is closed, so that hydraulic oil cannot enter an oil tank through the tail-linked oil return channel 55, working pressure is generated in the middle-linked oil inlet channel 24, at the moment, the proportional electromagnet of the corresponding middle link is controlled to be electrified according to external control requirements, the corresponding middle-linked valve core 23 is opened, and the hydraulic oil can enter the corresponding power-assisted gear shifting clutch to realize the hanging of gears;
during gear shifting, taking first gear shifting and second gear shifting as an example, the first gear clutch needs to be disconnected, and meanwhile, the second gear clutch is connected, at the moment, the intermediate linkage proportion electromagnet of the first gear clutch is controlled to be powered off, and the corresponding intermediate linkage valve core 23 moves to the right, so that the working oil port 25 of the intermediate linkage of the first gear clutch is communicated with the intermediate linkage oil return channel 26, and the pressure unloading of the first gear clutch is realized; meanwhile, the proportional electromagnet in the middle of the second-gear clutch is controlled to be electrified, so that the second-gear clutch is jointed, and the gear shifting action is completed.
2. The power gear shifting valve group has remarkable modularization characteristics, and the number of the intermediate couplings can be determined according to the gear requirements of a vehicle; each intermediate coupler controls one gear shifting clutch, each intermediate coupler works independently without mutual interference, combination and separation of any two clutches can be realized, combination and separation of a plurality of clutches can also be realized, and the clutch control device is suitable for power gear shifting clutch control of various power routes.
3. The middle of the power gear shifting valve group is provided with a load sensitive control interface, and a load sensitive control system can be selected and installed according to working requirements; if not, the load sensitive interface can be plugged up by using the plug 72, and the normal function of the valve group is not influenced.
4. The product has simple appearance and internal structure, the related blank is a blank with a regular shape, the required die has simple structure and low development cost; the related processing characteristics are end face, excircle or pore channel processing, the processing cost is low, and the batch production is convenient to realize.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a modularization power hydraulic pressure multiple unit valve of shifting, includes that first allies oneself with the valve body and the tail allies oneself with the valve body, its characterized in that: a plurality of intermediate valve bodies are connected in series between the head valve body and the tail valve body;
the head-connected valve body is provided with an oil inlet and a pressure measuring interface, a head-connected oil inlet channel facing the opening of the middle-connected valve body is arranged in the head-connected valve body, the oil inlet and the pressure measuring interface are both communicated with the head-connected oil inlet channel, and a head-connected oil return channel penetrating through the head-connected valve body is arranged in the head-connected valve body;
a middle valve cavity is arranged in the middle valve body, a middle valve core is arranged in the middle valve cavity, and a middle driving device for controlling the middle valve core to act is arranged on the middle valve body; the middle joint valve body is internally provided with a middle joint oil inlet channel and a middle joint oil return channel which penetrate through the middle joint valve body and are communicated with the middle joint valve cavity, and the middle joint valve body is provided with a working oil port and a pressure measuring interface which are communicated with the middle joint valve cavity;
a tail valve cavity is arranged in the tail valve body, a tail valve core is arranged in the tail valve cavity, and a tail driving device for controlling the action of the tail valve core is arranged on the tail valve body; the tail-linked valve body is provided with a tail-linked oil inlet channel and a tail-linked oil return channel facing the opening of the middle-linked valve body, and the tail-linked oil inlet channel and the tail-linked oil return channel are both communicated with the tail-linked valve cavity;
the first-joint oil inlet channel, the middle-joint oil inlet channel and the tail-joint oil inlet channel are communicated, and the first-joint oil return channel, the middle-joint oil return channel and the tail-joint oil return channel are communicated.
2. The modular power shift hydraulic multiplex valve of claim 1 wherein: the middle linkage driving device comprises a middle linkage electromagnet which is arranged on the middle linkage valve body and is in transmission connection with one end of the middle linkage valve core, a spring end cover used for plugging the middle linkage valve cavity is arranged on the middle linkage valve body at the other end of the middle linkage valve core, and a middle linkage return spring is arranged between the spring end cover and the middle linkage valve core.
3. The modular power shift hydraulic multiplex valve of claim 2 wherein: the middle electromagnet is a proportional electromagnet.
4. The modular power shift hydraulic multiplex valve of claim 1 wherein: and a load sensitive channel communicated with the working oil port and the pressure measuring interface is arranged in the middle connecting valve body, and a detachable plug is arranged at a port of the load sensitive channel.
5. The modular power shift hydraulic multiplex valve of claim 1 wherein: the middle connecting valve core comprises a middle connecting core shaft, a shaft shoulder used for controlling the on-off of the working oil port and the middle connecting valve cavity is arranged on the middle connecting core shaft, a spring seat in sliding fit with the inner wall of the middle connecting valve cavity is arranged at one end of the middle connecting core shaft, and a guide seat in sliding fit with the inner wall of the middle connecting valve cavity is arranged at the other end of the middle connecting core shaft.
6. The modular power shift hydraulic multiplex valve of claim 5 wherein: a plurality of U-shaped grooves used for buffering hydraulic impact are symmetrically arranged on the shaft shoulder.
7. The modular power shift hydraulic multiplex valve of claim 1 wherein: the tail joint driving device comprises a tail joint electromagnet which is arranged on the tail joint valve body and is in transmission connection with one end of the tail joint valve core, and a tail joint return spring is arranged between the other end of the tail joint valve core and the closed bottom end of the tail joint valve cavity.
8. The modular power shift hydraulic multi-way valve as claimed in any one of claims 1 to 7, wherein: the bottom of the first-connection valve body and the bottom of the tail-connection valve body are provided with mounting seats extending to two sides of the valve body, and each mounting seat is provided with a mounting hole located at two sides of the first-connection valve body or the tail-connection valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921983544.9U CN210769616U (en) | 2019-11-15 | 2019-11-15 | Modularization power hydraulic pressure multiple unit valve of shifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921983544.9U CN210769616U (en) | 2019-11-15 | 2019-11-15 | Modularization power hydraulic pressure multiple unit valve of shifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769616U true CN210769616U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921983544.9U Active CN210769616U (en) | 2019-11-15 | 2019-11-15 | Modularization power hydraulic pressure multiple unit valve of shifting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769616U (en) |
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2019
- 2019-11-15 CN CN201921983544.9U patent/CN210769616U/en active Active
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