CN218439988U - Fault isolation cartridge valve for steering oil cylinder of rotating vane steering engine and rotating vane steering engine - Google Patents

Abstract

The fault isolation cartridge valve of the steering oil cylinder of the rotary vane steering engine comprises a mounting valve plate, a two-way cartridge valve, an isolation safety valve and a liquid path isolation valve; the mounting valve plate is provided with an interface and an oil drainage port which are respectively connected with a first working oil port and a second working oil port of two pump stations, the two-way cartridge valves are mounted on two sides of the mounting valve plate and are respectively connected between the first working oil ports and the second working oil ports of the two pump stations through an oil port A of the two-way valve and an oil port B of the two-way valve; an isolation safety valve is arranged on the two-way cartridge valve to control the connection and disconnection between the oil port A of the two-way valve and the oil port B of the two-way valve; the liquid way isolating valve is installed in the middle of the installation valve plate, is suitable for controlling the on-off between the first working oil ports and between the second working oil ports of the two pump stations, and has the advantages of high integration level, small size and low cost. The application also discloses a rotating vane steering engine.

Description

Fault isolation cartridge valve for steering oil cylinder of rotary vane steering engine and rotary vane steering engine

Technical Field

The application relates to boats and ships steering wheel control field especially relates to a commentaries on classics leaf steering wheel commentaries on classics rudder hydro-cylinder fault isolation cartridge valve, and in addition, this application still relates to a commentaries on classics leaf steering wheel.

Background

The ship steering engine is a device which moves under the driving of hydraulic equipment and drives a rudder to rotate so as to control the navigation direction of a ship. In order to ensure the reliability of the operation of the steering engine, the steering engine is generally provided with two sets of hydraulic cylinders which are mutually independent, and two sets of hydraulic drive pump stations which are mutually independent are arranged, and hydraulic oil output by the pump stations drives the steering engine to rotate under the control of a hydraulic control loop. An isolation valve group is arranged between the two sets of hydraulic cylinders and the two sets of hydraulic driving pump stations, when the steering engine has a single fault, the fault part can be isolated in time by adjusting the hydraulic isolation valve group, so that the steering engine can work by using one set of hydraulic cylinders, the steering ability of the ship can be recovered as soon as possible, and the navigation safety of the ship is guaranteed.

The ship steering engine mainly comprises a plunger type steering engine and a rotating vane type steering engine, and the rotating vane type steering engine is widely applied due to the advantages of small volume and high efficiency. The two sides of a steering oil cylinder of an existing steering engine with rotating blades respectively comprise an independent working oil cylinder, each working oil cylinder is composed of a rotating blade arranged on a steering engine rotor and two oil cavities positioned on two sides of the rotating blade, two working oil ports of a pump station are respectively connected to the two oil cavities of the working oil cylinder, and output hydraulic oil drives the working oil cylinders to work to push the steering engine rotor to rotate. In order to ensure the navigation safety of a ship, the normal work of a ship steering engine is ensured to be not stopped by arranging a redundancy structure, if two pump stations are arranged and respectively connected to two working oil cylinders of a steering oil cylinder to supply oil to the steering oil cylinder, corresponding oil cavities of the two independent working oil cylinders are mutually connected, and each pump station is ensured to simultaneously supply oil to the two working oil cylinders. In order to prevent the steering oil cylinder from being incapable of working due to the fault of any working oil cylinder, a fault isolation valve group is usually arranged, an isolation valve is arranged on a connecting oil path between the two working oil cylinders, and a communication reversing valve and a safety valve are arranged between the two working oil ports of each pump station. When any working oil cylinder fails and cannot be used, the working of a fault side pump station is stopped, the intact side pump station works to supply oil to the intact working oil cylinder, the isolating valve is controlled to act at the same time, a connecting oil way between the two working oil cylinders is cut off, and the fault side is communicated with the reversing valve to act, so that the two oil cavities of the fault side working oil cylinder are connected with each other, and the working oil cylinder which fails is prevented from blocking the operation of the intact working oil cylinder. And the setting of relief valve can prevent that the pressure of pump station working fluid port is too high, guarantees hydraulic circuit's work safety.

Because the flow of the hydraulic oil for driving the steering engine to work is very large, in order to ensure the reliable communication between the two working oil ports of the pump station, the valve port oil duct of the communicating reversing valve of the existing steering oil cylinder is usually arranged very large, the space occupation and the production cost of the communicating reversing valve are greatly increased, and the action sensitivity of the communicating reversing valve is reduced. Similarly, in order to ensure reliable pressure relief of the pump station working oil port, the valve port oil passage of the safety valve is also arranged to be very large, the volume and the production cost of the safety valve are increased, and the action sensitivity of the safety valve is reduced.

SUMMERY OF THE UTILITY MODEL

In order to reduce the volume of rudder engine oil cylinder trouble isolation valves, reduce trouble isolation valves's cost, this application provides a commentaries on classics vane steering engine commentaries on classics rudder oil cylinder trouble isolation cartridge valve and commentaries on classics vane steering wheel.

The application provides a commentaries on classics vane steering wheel helm steering hydro-cylinder fault isolation cartridge valve adopts following technical scheme:

a fault isolation cartridge valve of a steering oil cylinder of a rotary vane steering engine comprises a mounting valve plate, a two-way cartridge valve, an isolation safety valve and a liquid path isolation valve; the mounting valve plate is provided with a first pump station first working oil port, a first pump station second working oil port, a second pump station first working oil port, a second pump station second working oil port and an oil drainage port which are used for being connected with the mounting valve plate, and the two-way cartridge valve comprises a two-way valve control port, a two-way valve A oil port and a two-way valve B oil port; the two-way cartridge valves are respectively arranged on two sides of the mounting valve plate, one two-way cartridge valve is connected between the first working oil port of the first pump station and the second working oil port of the first pump station through the oil port A of the two-way valve and the oil port B of the two-way valve, and the other two-way cartridge valve is connected between the first working oil port of the second pump station and the second working oil port of the second pump station through the oil port A of the two-way valve and the oil port B of the two-way valve; each two-way cartridge valve is provided with one isolation safety valve, one isolation safety valve is connected among the first working oil port of the first pump station, the second working oil port of the first pump station, the oil drainage port and the corresponding control port of the two-way valve, and the other isolation safety valve is connected among the first working oil port of the second pump station, the second working oil port of the second pump station, the oil drainage port and the corresponding control port of the two-way valve; the hydraulic circuit isolating valve is installed in the middle of the installation valve plate and is suitable for controlling the first working oil port of the first pump station and the first working oil port of the second pump station, and the second working oil port of the first pump station and the second working oil port of the second pump station to be switched on and off.

By adopting the technical scheme, the large valve port area of the two-way cartridge valve can be utilized to form large communication flow between the first working oil port and the second working oil port, and the reliable communication between the first working oil port and the second working oil port is ensured; compared with the traditional communicating hydraulic reversing valve, the two-way cartridge valve has smaller volume and lower manufacturing cost under the condition of the same valve port area. The isolating safety valve is used for controlling the two-way cartridge valve, the control of the large-flow valve body is realized through a valve body structure with smaller volume, the cost of the fault isolating valve is reduced while the valve port flow is ensured, and the volume of the valve body is reduced.

In a specific implementation scheme, the two-way cartridge valve comprises a cartridge valve body, a cartridge valve core and a cartridge valve cover, the cartridge valve body is provided with a cartridge valve cavity, the cartridge valve core is installed in the cartridge valve cavity, the cartridge valve cover is installed on the cartridge valve body and covers the cartridge valve cavity, a cartridge spring is arranged between the cartridge valve core and the cartridge valve cover, the cartridge valve core divides the cartridge valve cavity into a two-way valve A cavity, a two-way valve B cavity and a two-way valve spring cavity under the action of the cartridge spring, a two-way valve A oil port and a two-way valve B oil port are arranged on the cartridge valve body, a two-way valve control port is arranged on the cartridge valve cover, the two-way valve A oil port is communicated with the two-way valve A cavity, the two-way valve B is communicated with the two-way valve B cavity, and the two-way valve control port is communicated with the two-way valve spring cavity.

By adopting the technical scheme, the cartridge valve cavity arranged in the cartridge valve body can be matched with the cartridge valve core, so that the flow of a larger valve port can be controlled by a smaller volume; the valve body can be conveniently connected with the mounting valve plate by the plug-in mounting valve body, so that a compact valve body structure is formed; the pilot control valve for controlling the action of the two-way cartridge valve can be conveniently installed by using the cartridge valve cover, and the functional control of the two-way cartridge valve is formed.

In a specific implementation scheme, a first check valve and a second check valve are further arranged in the cartridge valve cover, an inlet of the first check valve is communicated with the oil port of the two-way valve a through a channel arranged in the cartridge valve cover and the cartridge valve body, an inlet of the second check valve is communicated with the oil port of the two-way valve B through a channel arranged in the cartridge valve cover and the cartridge valve body, outlets of the first check valve and the second check valve are connected with each other to form a sampling channel, the isolation safety valve is communicated with the oil port of the two-way valve a and the oil port of the two-way valve B through the sampling channel, and a sampling oil port is further arranged on the cartridge valve body and communicated with the sampling channel through a channel arranged in the cartridge valve body.

By adopting the technical scheme, the first one-way valve and the second one-way valve can extract higher pressure of hydraulic oil from the oil port A of the two-way valve and the oil port B of the two-way valve, namely two working oil ports of the pump station, so as to form control pressure for controlling the related hydraulic valves; the structure with first check valve and second check valve setting in cartridge valve gap can improve the integration level of the fault isolation cartridge valve of this application, reduces the volume of valve body.

In a specific implementation scheme, a reversing valve cavity is arranged in the isolation safety valve, a reversing valve core, a pilot electromagnet and a reversing valve spring are arranged in the reversing valve cavity, a reversing valve oil inlet channel, a reversing valve discharge oil channel, a reversing valve first oil outlet channel and a reversing valve second oil outlet channel which are respectively communicated with the reversing valve cavity are arranged in the isolation safety valve, the reversing valve oil inlet channel is also communicated with the sampling channel, an oil drainage interface communicated with the oil drainage port is also arranged on the cartridge valve body, the reversing valve discharge oil channel and the reversing valve first oil outlet channel are also communicated with the oil drainage interface through channels arranged in the cartridge valve cover and the cartridge valve body, and the reversing valve second oil outlet channel is also communicated with the two-way valve control port; the reversing valve core can be located at a first valve position or a second valve position under the action of the pilot electromagnet and the reversing valve spring, when the reversing valve core is located at the first valve position, the reversing valve oil inlet channel is communicated with the reversing valve second oil outlet channel, and when the reversing valve core is located at the second valve position, the reversing valve discharge oil channel is communicated with the reversing valve second oil outlet channel.

By adopting the technical scheme, the function of the pilot reversing valve can be formed by utilizing the reversing valve cavity and the reversing valve core which are arranged in the isolation safety valve, the control of the large-flow two-way cartridge valve is formed by the function of the small-flow pilot reversing valve, the existing large-flow communication reversing valve is omitted, and the size of the fault isolation cartridge valve is reduced.

In a specific implementation scheme, an overflow valve is further arranged in the isolation safety valve, an oil outlet of the overflow valve is communicated with the reversing valve discharge oil duct, a first throttle valve is further arranged in the cartridge valve cover, one end of the first throttle valve is communicated with the sampling channel, and the other end of the first throttle valve is respectively communicated with the two-way valve control port and an oil inlet of the overflow valve.

By adopting the technical scheme, the first throttle valve arranged in the cartridge valve cover and the overflow valve arranged in the isolation safety valve are utilized, so that a pressure difference can be formed at two ends of the first throttle valve when the overflow valve is opened, and the pressure difference is applied between the control port of the two-way valve and the oil port A of the two-way valve or the oil port B of the two-way valve, so that the two-way cartridge valve can be opened under the pressure action of the oil port A of the two-way valve or the oil port B of the two-way valve, and the large-flow discharge is realized, and the function of the large-volume safety valve is realized by utilizing the overflow valve with small volume; the first throttle valve is arranged in the cartridge valve cover, so that the integration level of the fault isolation cartridge valve is improved.

In a specific possible implementation scheme, a second throttle valve is further arranged in the cartridge valve cover, one end of the second throttle valve is communicated with the sampling channel, the other end of the second throttle valve is communicated with the reversing valve oil inlet channel, and the first throttle valve is communicated with the sampling channel through the second throttle valve.

By adopting the technical scheme, the pressure difference applied between the control port of the two-way valve and the oil port A of the two-way valve or the oil port B of the two-way valve when the overflow valve is opened can be increased by utilizing the second throttle valve, so that the reliable opening of the two-way cartridge valve is ensured; the second throttle valve is arranged in the cartridge valve cover, so that the integration level of the fault isolation cartridge valve is improved.

In a specific possible implementation scheme, a third throttle valve and a fourth throttle valve are further arranged in the cartridge valve cover, one end of the third throttle valve is connected to the second oil outlet channel of the reversing valve through a pipeline, one end of the fourth throttle valve is connected to the control port of the two-way valve, and the other ends of the third throttle valve and the fourth throttle valve are both connected to one end of the first throttle valve, which is connected to the oil inlet of the overflow valve.

By adopting the technical scheme, the impact of the valve position switching of the reversing valve core and the opening and closing of the overflow valve on the pressure of the control port of the two-way valve can be relieved by utilizing the third throttle valve and the fourth throttle valve, and the working stability of the two-way cartridge valve is ensured; the third throttle valve and the fourth throttle valve are arranged in the cartridge valve cover, so that the integration level of the fault isolation cartridge valve is improved.

In a specific possible embodiment, the sampling oil ports on the two-way cartridge valves are communicated through a sampling oil passage arranged in the mounting valve plate.

By adopting the technical scheme, the highest pressure in the first working oil port of the first pump station, the second working oil port of the first pump station, the first working oil port of the second pump station and the second working oil port of the second pump station can be transmitted to the sampling oil port by utilizing the structure of mutually connecting the sampling oil ports on the two-way cartridge valves, and the fault isolation cartridge valves can be ensured to react to the pressure increase of each working oil port of each pump station.

In a specific implementation scheme, the fluid path isolation valve is a two-position four-way reversing valve, the fluid path isolation valve includes an isolation valve oil inlet, an isolation valve discharge port, an isolation valve first oil outlet and an isolation valve second oil outlet, when the fluid path isolation valve is installed on the installation valve plate, the isolation valve oil inlet is communicated with the first working oil port of the first pump station through a channel arranged in the installation valve plate, the isolation valve discharge port is communicated with the second working oil port of the first pump station through a channel arranged in the installation valve plate, the isolation valve first oil outlet is communicated with the first working oil port of the second pump station through a channel arranged in the installation valve plate, and the isolation valve second oil outlet is communicated with the second working oil port of the second pump station through a channel arranged in the installation valve plate.

By adopting the technical scheme, the on-off between the first working oil port of the first pump station and the first working oil port of the second pump station and the on-off between the second working oil port of the first pump station and the second working oil port of the second pump station can be more conveniently and synchronously controlled by utilizing the two-position four-way reversing valve arranged on the mounting valve plate, and the communication and isolation between the corresponding working oil ports of the two pump stations are realized.

The application provides a commentaries on classics leaf steering wheel has adopted the commentaries on classics leaf steering wheel commentaries on classics rudder oil cylinder fault isolation cartridge valve that this application provided.

Through adopting above-mentioned technical scheme, utilize the commentaries on classics vane steering wheel helm steering hydro-cylinder trouble isolation cartridge valve of this application, can realize the function of current helm steering wheel hydro-cylinder trouble isolation valves with less valve body volume and lower cost to have higher valve body integration, improved the job stabilization nature of commentaries on classics vane steering wheel, reduced the cost of commentaries on classics vane steering wheel.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by utilizing the structure that the two-way cartridge valve, the safety isolation valve and the liquid path isolation valve are all arranged on the mounting valve plate, the plurality of valve bodies are combined into the integral cartridge valve, the integration level of the cartridge valve is improved, the stable connection among the plurality of valve bodies is ensured, and the space occupation of the valve bodies is reduced;

2. the cooperation of a reversing valve core arranged in an isolation safety valve arranged on a cartridge valve cover and a two-way cartridge valve is utilized to replace the traditional communicating hydraulic reversing valve, and the characteristics of small volume and large flow of the two-way cartridge valve are utilized to effectively reduce the large space occupation and high manufacturing cost brought by the large-flow reversing valve;

3. the cooperation of an overflow valve and a two-way cartridge valve arranged in an isolation safety valve is utilized to replace the traditional safety valve, the existing two-way cartridge valve is controlled by virtue of a small-volume and small-flow overflow valve, the effect of the large-volume and large-flow safety overflow valve is realized, and the volume of the fault isolation cartridge valve of the steering engine steering cylinder of the steering engine is further reduced;

4. the structure that the connecting pipeline between a plurality of valve bodies is arranged in the valve plate and the corresponding valve body is utilized, so that the connecting oil passages between different valve bodies are reduced, the leakage of the connecting oil passages is reduced, and the connecting stability is improved.

Drawings

Fig. 1 is a schematic external view of an embodiment of the fault isolation cartridge valve for a steering cylinder of a rotary vane steering engine.

Fig. 2 is an outline schematic diagram of another view angle of one embodiment of the fault isolation cartridge valve of the steering cylinder of the steering vane engine.

Fig. 3 is a schematic diagram of an embodiment of the fault isolation cartridge valve for the steering cylinder of the steering vane engine.

Fig. 4 is a schematic diagram of a two-way cartridge valve and an isolation safety valve of an embodiment of the fault isolation cartridge valve of the steering cylinder of the rotary vane steering engine.

Fig. 5 is a schematic structural diagram of a two-way cartridge valve according to an embodiment of the fault isolation cartridge valve for a steering cylinder of a rotary vane steering engine.

Fig. 6 is a schematic structural view of a cartridge valve cover of an embodiment of the fault isolation cartridge valve for a steering cylinder of a rotary vane steering engine.

Fig. 7 is a schematic structural view of an isolation safety valve of an embodiment of the fault isolation cartridge valve of the steering cylinder of the rotary vane steering engine.

Fig. 8 is a schematic view of a fluid path isolation valve according to an embodiment of the fault isolation cartridge valve for a steering cylinder of a rotary vane steering engine.

Fig. 9 is a schematic structural view of a liquid path isolation valve according to an embodiment of the fault isolation cartridge valve for a steering cylinder of a rotary vane steering engine.

Description of reference numerals: 1. installing a valve plate; 2. a two-way cartridge valve; 201. inserting a valve body; 202. inserting a valve core; 203. Inserting a valve cover; 21. a two-way valve control port; 22. an oil port of the two-way valve A; 23. the two-way valve B oil port; 24. inserting a valve cavity; 25. inserting a spring; 261. a first check valve; 262. a second one-way valve; 271. a first throttle valve; 272. a second throttle valve; 273. a third throttle valve; 274. a fourth throttle valve; 281. a first check valve oil inlet channel; 282. a second check valve oil inlet channel; 283. an overflow valve oil inlet interface; 284. an oil inlet connector of the reversing valve; 285. a reversing valve discharge port; 286. a first oil outlet interface of the reversing valve; 287. a second oil outlet interface of the reversing valve; 3. an isolation safety valve; 31. a reversing valve; 311. a reversing valve core; 312. A pilot electromagnet; 313. a reversing valve spring; 314. a reversing valve oil inlet channel; 315. a reversing valve discharge oil passage; 316. a first oil outlet channel of the reversing valve; 317. a second oil outlet channel of the reversing valve; 32. an overflow valve; 321. an overflow valve oil inlet channel; 322. the oil outlet of the overflow valve; 4. a liquid path isolation valve; 401. an isolation valve main valve; 402. a pilot solenoid valve; 41. an oil inlet of the isolation valve; 42. An isolation valve drain; 43. isolating the first oil outlet; 44. isolating the second oil outlet; a1, a first working oil port of a first pump station; b1, a second working oil port of a first pump station; a2, a first working oil port of a second pump station; b2, a second working oil port of a second pump station; p, a valve oil inlet; t, an oil drainage port; t1, an oil drainage interface; t2, a cover plate oil drainage port; t3, isolating the valve oil drainage channel; x, a sampling oil port; x1, a cover plate sampling oil port; x2, an isolation valve sampling oil port.

Detailed Description

The following detailed description of embodiments of the present application refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application.

In the application, under the condition that the contrary explanation is not carried out, the direction or position relation indicated by the direction words such as 'up, down, left and right' is based on the direction or position relation indicated by the attached drawings in the application and is not related to the direction and position relation when the fault isolation cartridge valve of the steering vane steering engine steering cylinder is actually used.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In the present description, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features described.

An embodiment of a fault isolation cartridge valve of a steering oil cylinder of a rotary vane steering engine is shown in fig. 1 and 2 and comprises a mounting valve plate 1, a two-way cartridge valve 2, an isolation safety valve 3 and a liquid path isolation valve 4. A first pump station first working oil port A1, a first pump station second working oil port B1, a second pump station first working oil port A2, a second pump station second working oil port B2 and an oil drainage port T which are used for external connection are arranged on the mounting valve plate 1, wherein the first pump station first working oil port A1 and the first pump station second working oil port B1 are connected with an oil inlet and an oil return port of the first pump station through a main control reversing valve of the first pump station; the first working oil port A2 and the second working oil port B2 of the second pump station are connected with an oil inlet and an oil return port of the second pump station through a main control reversing valve of the second pump station; the oil drainage port T can be provided with two communicated oil drainage ports, and the two oil drainage ports T can be connected to hydraulic oil tanks of two pump stations.

As shown in fig. 4 and 5, the two-way cartridge valve 2 includes a two-way valve control port 21, a two-way valve a port 22, and a two-way valve B port 23. The two-way cartridge valves 2 are arranged in two, and the two-way cartridge valves 2 are respectively arranged on two side parts of one mounting surface for mounting the valve plate 1. The oil port 22 of the two-way valve A of one two-way cartridge valve 2 is connected with any one of a first pump station first working oil port A1 and a first pump station second working oil port B1, the oil port 23 of the two-way valve B is connected with the other one of the first pump station first working oil port A1 and the first pump station second working oil port B1, preferably, the oil port 22 of the two-way valve A is connected with the first pump station first working oil port A1, and the oil port 23 of the two-way valve B is connected with the first pump station second working oil port B1; the two-way valve A oil port 22 of the other two-way cartridge valve 2 is connected with any one of a first working oil port A2 of a second pump station and a second working oil port B2 of the second pump station, the two-way valve B oil port 23 is connected with the other one of the first working oil port A2 of the second pump station and the second working oil port B2 of the second pump station, preferably, the two-way valve A oil port 22 is connected with the second working oil port B2 of the second pump station, and the two-way valve B oil port 23 is connected with the first working oil port A2 of the second pump station.

Each two-way cartridge valve 2 is provided with an isolation safety valve 3, and the isolation safety valve 3 is arranged between a pump station first working oil port, a pump station second working oil port and an oil drain port which are connected with the corresponding two-way cartridge valve 2 and a two-way valve control port 21 of the two-way cartridge valve 2 so as to switch the two-way valve control port 21 to be connected with the corresponding pump station first working oil port or pump station second working oil port or be connected with the oil drain port T. That is, one isolation safety valve 3 is connected between the first pump station first working oil port A1, the first pump station second working oil port B1, the oil drain port T and the corresponding two-way valve control port 21, and the other isolation safety valve 3 is connected between the second pump station first working oil port A2, the second pump station second working oil port B2, the oil drain port T and the corresponding two-way valve control port 21.

The liquid path isolation valve 4 is installed in the middle of the installation valve plate 1, and the on-off between the first working oil port A1 of the first pump station and the first working oil port A2 of the second pump station and between the second working oil port B1 of the first pump station and the second working oil port B2 of the second pump station can be controlled through the liquid path isolation valve 4. The liquid path isolation valve 4 can select a large-flow reversing valve, a switch valve or a valve group and the like, when the valve group is selected, a plurality of valve bodies of the valve group work synchronously, so that the first working oil port A1 of the first pump station and the first working oil port A2 of the second pump station, and the second working oil port B1 of the first pump station and the second working oil port B2 of the second pump station are synchronously switched on and switched off.

One end of the mounting valve plate 1 can be further provided with a mounting structure, and the fault isolation cartridge valve of the rotary vane steering engine steering cylinder is mounted on the rotary vane steering engine steering cylinder through the mounting structure. The utility model provides a theory of operation of cartridge valve is kept apart in commentaries on classics vane steering wheel helm steering hydro-cylinder trouble is shown in fig. 3, when the helm steering hydro-cylinder normally works, liquid way isolating valve 4 is in initial position, first pump station first work hydraulic fluid port A1 is linked together with second pump station first work hydraulic fluid port A2, first pump station second work hydraulic fluid port B1 is linked together with second pump station second work hydraulic fluid port B2, can drive two work hydro-cylinders simultaneous workings of helm steering hydro-cylinder simultaneously through first pump station or second pump station work alone, thereby when guaranteeing that any one breaks down in two pump stations, can guarantee the work of helm steering hydro-cylinder through the work of a pump station. When the unilateral working oil cylinder of the steering oil cylinder fails and can not normally work, the liquid path isolation valve 4 is manually switched according to failure alarm information, thereby cutting off the connection between two pump station working oil paths, the pump station works through the working oil cylinder connected to the side which does not fail, the working oil cylinder on the side which does not fail is driven to work independently, and the isolation safety valve 3 is switched, the two-way cartridge valve 2 on one side of the working oil cylinder which is controlled to fail is switched on, so that the first working oil port and the second working oil port of the pump station on the side are communicated, the failure side working oil cylinder is prevented from blocking the steering oil cylinder from rotating, and the steering engine is ensured to be unlikely to halt due to the working of the unilateral working oil cylinder.

In some embodiments of the vane steering engine steering cylinder fault isolation cartridge valve of the present application, as shown in fig. 4 and 5, the two-way cartridge valve 2 includes a cartridge valve body 201, a cartridge valve core 202, and a cartridge valve cover 203. The cartridge valve body 201 has a cartridge valve chamber 24, and the cartridge valve 202 is mounted in the cartridge valve chamber 24 so as to be slidable in the cartridge valve chamber 24. The cartridge valve cover 203 is mounted on the cartridge valve body 201 and covers the opening of the cartridge valve cavity 24, the cartridge spring 25 is mounted in the cartridge valve cavity 24, the cartridge spring 25 is usually a compression spring with small elasticity capable of pushing the cartridge valve 202 to slide in the valve cavity 24, and the cartridge spring 25 is mounted between the cartridge valve 202 and the cartridge valve cover 203.

The oil port 22 of the two-way valve A and the oil port 23 of the two-way valve B are arranged on the cartridge valve body 201 and are communicated with different positions of the cartridge valve cavity 24, and the control port 21 of the two-way valve is arranged on the cartridge valve cover 203 and is communicated with the position of the cartridge valve cavity 24 where the spring 25 is inserted. The cartridge 202 can be pushed by the cartridge spring 25 to be located at one end of the cartridge cavity 24 far away from the cartridge spring 25, and the oil path between the oil port 22 of the two-way valve a and the oil port 23 of the two-way valve B is blocked. Normally, the two-way valve a port 22 is connected to an end of the valve chamber 24, and the two-way valve B port 23 is connected to a side wall of the valve chamber 24 adjacent to the two-way valve a port 22. A two-way valve a chamber may be formed at a connection point of the two-way valve a oil port 22 and the valve insertion chamber 24, a two-way valve B chamber may be formed at a connection point of the two-way valve B oil port 23 and the valve insertion chamber 24, and a two-way valve spring chamber may be formed at a connection point of the two-way valve control port 21 and the valve insertion chamber 24.

When high-pressure hydraulic oil is input to the spring cavity of the two-way valve through the control port 21 of the two-way valve, the high-pressure hydraulic oil acts on the upper end of the cartridge valve 202 and pushes the cartridge valve 202 to move downwards together with the cartridge spring 25, and the oil port 22 of the two-way valve A and the oil port 23 of the two-way valve B are blocked. When the two-way valve control port 21 is connected with the oil drainage port T, the hydraulic oil in the spring cavity of the two-way valve is released, only the insertion spring 25 forms a smaller elastic force for pushing the insertion valve core 202 downwards, at this time, if high-pressure hydraulic oil is input into the oil port 22 of the two-way valve a, the high-pressure hydraulic oil acts on the lower end face of the insertion valve core 202 through the oil port 22 of the two-way valve a to form an upward thrust, the elastic force of the insertion spring 25 is easily overcome, the insertion valve core 202 is pushed to slide upwards, so that the oil port 22 of the two-way valve a is communicated with the oil port 23 of the two-way valve B, and the hydraulic oil in the oil port 22 of the two-way valve a can smoothly flow into the oil port 23 of the two-way valve B; if high-pressure hydraulic oil is input into the oil port 23 of the two-way valve B, the high-pressure hydraulic oil acts on the step surface on the side surface of the plug-in valve core 202 through the oil port 23 of the two-way valve B to form upward thrust, and the elastic force of the plug-in spring 25 can be easily overcome to push the plug-in valve core 202 to slide upward, so that the oil port 23 of the two-way valve B is communicated with the oil port 22 of the two-way valve a, and the hydraulic oil in the oil port 23 of the two-way valve B can smoothly flow into the oil port 22 of the two-way valve a.

In some embodiments of the fault isolation cartridge valve for the steering cylinder of the vane steering engine of the present application, as shown in fig. 6, a first check valve 261 and a second check valve 262 are disposed in the cartridge valve cover 203. A first one-way valve oil inlet passage 281, a second one-way valve oil inlet passage 282 and a cover plate sampling oil port X1 penetrating through the cartridge valve cover 203 are arranged on the cartridge valve cover 203, an inlet of the first one-way valve 261 is communicated with the first one-way valve oil inlet passage 281, and is communicated with the two-way valve A oil port 22 through the first one-way valve oil inlet passage 281 and a passage arranged in the cartridge valve body 201; the inlet of the second check valve 262 is communicated with the second check valve oil inlet passage 282, and is communicated with the oil port 23 of the two-way valve B through the second check valve oil inlet passage 282 and a passage arranged in the cartridge valve body 201. Outlets of the first check valve 261 and the second check valve 262 are connected to each other to form a sampling passage, the sampling passage is connected to the cover plate sampling oil port X1, the isolation safety valve 3 is communicated with the cover plate sampling oil port X1, and is communicated with the two-way valve a oil port 22 and the two-way valve B oil port 23 through the first check valve 261 and the second check valve 262. As shown in fig. 4, a sampling port X is further provided on the cartridge valve body 201, and the cover plate sampling port X1 is communicated with the sampling port X through a passage provided in the cartridge valve body 201.

In a preferred embodiment of the fault isolation cartridge valve for the steering cylinder of the steering engine of the present application, as shown in fig. 7, a reversing valve 31 is arranged in the isolation safety valve 3. The reversing valve 31 comprises a reversing valve cavity, a reversing valve core 311, a pilot electromagnet 312 and a reversing valve spring 313 which are arranged in the reversing valve cavity, and a reversing valve oil inlet channel 314, a reversing valve oil discharge channel 315, a reversing valve first oil outlet channel 316 and a reversing valve second oil outlet channel 317 which are communicated with different parts of the reversing valve cavity 31 are also arranged on the isolation safety valve 3.

A reversing valve oil inlet interface 284 communicated with the cover plate sampling oil port X1 is arranged on the cartridge valve cover 203, and when the isolation safety valve 3 is installed on the cartridge valve cover 203, the reversing valve oil inlet channel 314 is communicated with the reversing valve oil inlet interface 284; the cartridge valve body 201 is further provided with a drain port T1 communicated with the drain port T, the cartridge valve cover 203 is further provided with a cover plate drain port T2 communicated with the drain port T1, the cartridge valve cover 203 is further provided with a reversing valve discharge port 285 communicated with the cover plate drain port T2 and a reversing valve first oil outlet port 286, when the isolation safety valve 3 is installed on the cartridge valve cover 203, the reversing valve discharge oil duct 315 is communicated with the reversing valve discharge port 285, and the reversing valve first oil outlet passage 316 is communicated with the reversing valve first oil outlet port 286; the cartridge valve cover 203 is further provided with a second oil outlet port 287 of the reversing valve, which is communicated with the control port 21 of the two-way valve, and when the isolation safety valve 3 is mounted on the cartridge valve cover 203, the second oil outlet channel 317 of the reversing valve is communicated with the second oil outlet port 287 of the reversing valve.

The pilot electromagnet 312 and the direction valve spring 313 are respectively installed at both ends of the direction valve spool 311, and the direction valve spool 311 can slide in the direction valve chamber under the action of the pilot electromagnet 312 and the direction valve spring 313. The pilot electromagnet 312 is connected with the control circuit through an electrical interface arranged on the isolation safety valve 3, when the pilot electromagnet 312 is not powered, the reversing valve spool 311 is in the first valve position under the action of the reversing valve spring 313, the reversing valve oil inlet channel 314 is communicated with the reversing valve second oil outlet channel 317, the high-pressure hydraulic oil in the sampling channel is communicated with the two-way valve control port 21 through the cover plate sampling oil port X1, the reversing valve oil inlet interface 284, the reversing valve oil inlet channel 314, the reversing valve second oil outlet channel 317 and the reversing valve second oil outlet interface 287, and the connection between the two-way valve a oil port 22 and the two-way valve B oil port 23 is cut off, namely the connection between the corresponding pump station first working oil port and the pump station second working oil port.

When the first conductive magnet 312 is powered on, the reversing valve core 311 overcomes the elastic force of the reversing valve spring 313 and is located at the second valve position under the action of the first conductive magnet 312, the reversing valve discharge oil duct 315 is communicated with the reversing valve second oil outlet channel 317, the hydraulic oil in the two-way valve control port 21 is released through the reversing valve second oil outlet port 287, the reversing valve second oil outlet channel 317, the reversing valve discharge oil duct 315, the reversing valve discharge port 285, the cover plate oil drain port T2, the oil drain port T1 and the oil drain port T, and a smaller pressure in the two-way valve a oil port 22 or the two-way valve B oil port 23 can push the cartridge valve core 202 to move, so that the two-way valve a oil port 22 and the two-way valve B23 are communicated with each other, that is, the corresponding pump station first working oil port and the pump station second working oil port are communicated with each other.

In some embodiments of the fault isolation cartridge valve for the steering cylinder of the vane steering engine of the present application, as shown in fig. 7, an overflow valve 32 is further disposed in the isolation safety valve 3. The oil outlet of the overflow valve 32 is communicated with the reversing valve discharge oil passage 315 through an overflow valve oil outlet channel 322 arranged in the isolation safety valve 3, and is communicated with the oil drain port T through the reversing valve discharge oil passage 315, a reversing valve discharge interface 285, a cover plate oil drain port T2 and an oil drain interface T1; the isolation safety valve 3 is also provided with an overflow valve oil inlet channel 321 communicated with the oil inlet of the overflow valve 32.

As shown in fig. 6, a first throttle valve 271 is further disposed in the cartridge valve cover 203, one end of the first throttle valve 271 is communicated with the sampling channel, and the other end of the first throttle valve 271 is respectively communicated with the two-way valve control port 21 and the spill valve oil inlet port 283. When the isolation safety valve 3 is installed on the cartridge valve cover 203, the overflow valve oil inlet channel 321 is communicated with the overflow valve oil inlet interface 283, the oil inlet of the overflow valve 32 is also communicated with the second reversing valve oil outlet interface 287 through the overflow valve oil inlet channel 321 and the overflow valve oil inlet interface 283, and is communicated with the second reversing valve oil outlet channel 317 through the second reversing valve oil outlet interface 287.

When the pressure of the hydraulic oil in the sampling passage exceeds the overflow pressure of the overflow valve 32, the hydraulic oil in the sampling passage leaks to the oil drain port T through the first throttle valve 271, the overflow valve oil inlet port 283, the overflow valve oil inlet passage 321, the overflow valve 32, the cover plate sampling oil port X1, the overflow valve oil outlet passage 322, the reversing valve discharge oil passage 315, the reversing valve discharge port 285, the cover plate oil drain port T2 and the oil drain port T1, a pressure difference is formed at two ends of the first throttle valve 271, so that the pressure of the hydraulic oil in the two-way valve control port 21 is lower than the pressure of the hydraulic oil in the sampling passage, that is, the pressure is lower than the pressure of the first check valve oil inlet passage 281 or the second check valve oil inlet passage 282, the pressure acts on two ends of the cartridge 202, the cartridge 202 is pushed to move, the two-way cartridge valve 2 is opened, so that the hydraulic oil in the oil passages with higher pressure in the first check valve oil inlet passage 281 and the second check valve oil inlet passage 282 flows to the oil passages with lower pressure, thereby reducing the pressure in the oil passages, that is the pressure of the pump working vane of the steering engine connected with the hydraulic oil cylinder.

As a specific embodiment of the fault isolation cartridge valve for the steering cylinder of the vane-rotating steering engine according to the present application, as shown in fig. 6, a second throttle valve 272 is further disposed in the cartridge valve cover 203. One end of the second throttle valve 272 is communicated with the sampling passage through a passage arranged in the cartridge valve cover 203, and the other end is respectively communicated with the first throttle valve 271 and the reversing valve oil inlet connector 284 through a passage arranged in the cartridge valve cover 203. When the isolation safety valve 3 is installed on the cartridge valve cover 203, the second throttle valve 272 communicates with the direction valve oil inlet passage 314 through the direction valve oil inlet port 284. When the relief valve 32 is drained, the hydraulic oil flows through the first throttle valve 271 and the second throttle valve 272 at the same time, and the sum of the hydraulic pressure differences formed at both ends of the first throttle valve 271 and the second throttle valve 272 is applied to both ends of the cartridge 202, thereby more easily pushing the two-way cartridge 2 open.

In some embodiments of the fault isolation cartridge valve for the steering cylinder of the vane steering engine of the present application, as shown in fig. 6, a third throttle 273 and a fourth throttle 274 are further disposed in the cartridge valve cover 203. One end of the third throttle valve 273 is connected to the direction valve second oil outlet port 287 through a passage provided in the cartridge valve cover 203, and one end of the fourth throttle valve 274 is connected to the two-way valve control port 21 through a passage provided in the cartridge valve cover 203; the other ends of the third throttle 273 and the fourth throttle 274 are both connected to a spill valve oil inlet port 283 through passages provided in the cartridge valve cover 203. When the isolation safety valve 3 is installed on the cartridge valve cover 203, the fourth throttle valve 274 is communicated with the spill valve oil inlet passage 321 through the spill valve oil inlet port 283, and the third throttle valve 273 is communicated with the direction valve second oil outlet passage 317 through the direction valve second oil outlet port 287. When the valve position of the selector valve 31 is switched, the third throttle 273 can absorb a sudden change in the oil pressure in the inlet of the relief valve 32 and in the outlet of the two-way valve control port 21, and when the relief valve 32 overflows, the fourth throttle 274 can absorb a sudden change in the pressure in the two-way valve control port 21.

In some embodiments of the inserted valve are kept apart to commentaries on classics vane steering engine helm steering hydro-cylinder trouble of this application, when two-way inserted valves 2 were installed on installation valve plate 1, the sample hydraulic fluid port X on two-way inserted valves 2 communicates through the oil duct that sets up in installation valve plate 1 each other to can transmit the pressure of the highest hydraulic oil among first pump station first work hydraulic fluid port A1, first pump station second work hydraulic fluid port B1, second pump station first work hydraulic fluid port A2 and second pump station second work hydraulic fluid port B2 to in the sample hydraulic fluid port X.

In a preferred embodiment of the fault isolation cartridge valve for the steering cylinder of the steering engine of the present application, as shown in fig. 8 and 9, the fluid path isolation valve 4 is a two-position four-way reversing valve. The liquid path isolation valve 4 comprises an isolation valve main valve 401 and a pilot electromagnetic valve 402, an isolation valve cavity is arranged in the isolation valve main valve 401, an isolation valve core is arranged in the isolation valve cavity, two control valve cavities are arranged at two ends of the isolation valve core, and a return spring is arranged in each of the two control valve cavities. An isolation valve oil inlet 41, an isolation valve discharge port 42, an isolation valve first oil outlet 43 and an isolation valve second oil outlet 44 which are communicated with the isolation valve cavity, an isolation valve sampling oil port X2 which is communicated with the right control valve cavity, and an isolation valve oil drainage channel T3 which penetrates through the isolation valve main valve 401 are arranged on the isolation valve main valve 401. The pilot solenoid valve 402 is mounted on the isolation valve main valve 401, and the left control valve cavity, the isolation valve oil drainage passage T3 and the right control valve cavity are all communicated with the pilot solenoid valve 402.

When the liquid path isolation valve 4 is installed on the installation valve plate 1, an isolation valve oil inlet 41 is communicated with a first working oil port A1 of a first pump station through a channel arranged in the installation valve plate 1, an isolation valve discharge port 42 is communicated with a second working oil port B1 of the first pump station through a channel arranged in the installation valve plate 1, an isolation valve first oil outlet 43 is communicated with a first working oil port A2 of a second pump station through a channel arranged in the installation valve plate 1, and an isolation valve second oil outlet 44 is communicated with a second working oil port B2 of the second pump station through a channel arranged in the installation valve plate 1; the isolating valve sampling oil port X2 is communicated with the sampling oil port X through a channel arranged in the mounting valve plate 1, and the isolating valve oil drainage channel T3 is communicated with the oil drainage interface T1 through a channel arranged in the mounting valve plate 1.

An electrical interface for controlling the pilot solenoid valve 402 is arranged on the pilot solenoid valve 402, when the pilot solenoid valve 402 is not powered, the pilot solenoid valve 402 is located at an initial valve position, at this time, the isolating valve oil drain port passage T3 is communicated with the left control valve cavity, the pressure in the right control valve cavity is greater than the pressure in the left control valve cavity, the isolating valve core is located at the first valve position on the left under the pushing of hydraulic oil pressure, so that the isolating valve oil inlet 41 is communicated with the first oil outlet 43 of the isolating valve, the isolating valve discharge port 42 is communicated with the second oil outlet 44 of the isolating valve, that is, the first pump station first working oil port A1 is communicated with the second pump station first working oil port A2, and the first pump station second working oil port B1 is communicated with the second pump station second working oil port B2. Therefore, the two working oil cylinders on two sides of the steering oil cylinder can be driven to work simultaneously by the independent work of the first pump station or the second pump station.

When the pilot solenoid valve 402 is powered on, the pilot solenoid valve 402 switches the valve position to enable the left control valve cavity to be communicated with the right control valve cavity, the pressures in the left control valve cavity and the right control valve cavity are equal, the isolation valve core moves to the second valve position under the pushing of the return spring to enable the isolation valve oil inlet 41, the isolation valve discharge port 42, the isolation valve first oil outlet 43 and the isolation valve second oil outlet 44 to be isolated from each other, namely the first pump station first working oil port A1, the first pump station second working oil port B1, the second pump station first working oil port A2 and the second pump station second working oil port B2 are isolated from each other. Therefore, the pump station connected to the perfect side working oil cylinder of the steering oil cylinder can work to drive the perfect side working oil cylinder to work, and hydraulic oil is prevented from flowing to the fault side working oil cylinder to cause leakage of the hydraulic oil.

The utility model provides a rotating vane steering wheel has used the rotating vane steering wheel steering cylinder fault isolation cartridge valve of any embodiment of this application, compares in traditional fault isolation valve and has higher integrated level, less volume and lower cost. When guaranteeing to change the vane steering wheel and can not shut down because of the unilateral trouble of helm steering hydro-cylinder, can also restrict the operating pressure of valves, the safe work of guarantee valves.

In the description of the present invention, reference to the description of the terms "one embodiment," "a specific embodiment," "a preferred embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a change blade steering wheel helm steering hydro-cylinder trouble and keep apart cartridge valve which characterized in that: comprises a mounting valve plate (1), a two-way cartridge valve (2), an isolation safety valve (3) and a liquid path isolation valve (4); the mounting valve plate (1) is provided with a first pump station first working oil port (A1), a first pump station second working oil port (B1), a second pump station first working oil port (A2), a second pump station second working oil port (B2) and an oil drainage port (T) which are used for being connected with the outside, and the two-way cartridge valve (2) comprises a two-way valve control port (21), a two-way valve A oil port (22) and a two-way valve B oil port (23); the two-way cartridge valves (2) are respectively arranged on two sides of the mounting valve plate (1), one two-way cartridge valve (2) is connected between a first working oil port (A1) of the first pump station and a second working oil port (B1) of the first pump station through an oil port (22) of the two-way valve A and an oil port (23) of the two-way valve B, and the other two-way cartridge valve (2) is connected between the first working oil port (A2) of the second pump station and the second working oil port (B2) of the second pump station through the oil port (22) of the two-way valve A and the oil port (23) of the two-way valve B; each two-way cartridge valve (2) is provided with one isolation safety valve (3), one isolation safety valve (3) is connected among the first pump station first working oil port (A1), the first pump station second working oil port (B1), the oil drainage port (T) and the corresponding two-way valve control port (21), and the other isolation safety valve (3) is connected among the second pump station first working oil port (A2), the second pump station second working oil port (B2), the oil drainage port (T) and the corresponding two-way valve control port (21); the hydraulic circuit isolation valve (4) is installed in the middle of the installation valve plate (1) and is suitable for controlling the on-off between the first working oil port (A1) of the first pump station and the first working oil port (A2) of the second pump station, and the second working oil port (B1) of the first pump station and the second working oil port (B2) of the second pump station.

2. The fault isolation cartridge valve for the steering cylinder of the rotary vane steering engine according to claim 1, which is characterized in that: the two-way cartridge valve (2) comprises a cartridge valve body (201), a cartridge valve core (202) and a cartridge valve cover (203), the cartridge valve body (201) is provided with a cartridge valve cavity (24), the cartridge valve core (202) is installed in the cartridge valve cavity (24), the cartridge valve cover (203) is installed on the cartridge valve body (201) and covers the cartridge valve cavity (24), an cartridge spring (25) is arranged between the cartridge valve core (202) and the cartridge valve cover (203), the cartridge valve core (202) separates the cartridge valve cavity (24) into a two-way valve A cavity, a two-way valve B cavity and a two-way valve spring cavity under the action of the cartridge spring (25), the two-way valve A oil port (22) and the two-way valve B oil port (23) are arranged on the cartridge valve body (201), the two-way valve control port (21) is arranged on the cartridge valve cover (203), the two-way valve A cavity (22) is communicated with the two-way valve A cavity, the two-way valve B oil port (23) is communicated with the two-way valve B cavity, and the two-way valve B cavity (21) is communicated with the two-way valve control valve spring cavity.

3. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to claim 2, which is characterized in that: the hydraulic control valve is characterized in that a first one-way valve (261) and a second one-way valve (262) are further arranged in the cartridge valve cover (203), an inlet of the first one-way valve (261) is communicated with the oil port (22) of the two-way valve A through a channel arranged in the cartridge valve cover (203) and the cartridge valve body (201), an inlet of the second one-way valve (262) is communicated with the oil port (23) of the two-way valve B through a channel arranged in the cartridge valve cover (203) and the cartridge valve body (201), outlets of the first one-way valve (261) and the second one-way valve (262) are connected with each other to form a sampling channel, the isolation safety valve (3) is communicated with the oil port (22) of the two-way valve A and the oil port B (23) through the sampling channel, a sampling valve (X) is further arranged on the cartridge valve body (201), and is communicated with the sampling channel through a channel arranged in the cartridge valve body (201).

4. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to claim 3, which is characterized in that: a reversing valve (31) is arranged in the isolation safety valve (3), the reversing valve (31) comprises a reversing valve cavity, a reversing valve core (311), a pilot electromagnet (312) and a reversing valve spring (313) which are arranged in the reversing valve cavity, a reversing valve oil inlet channel (314), a reversing valve discharge oil channel (315), a reversing valve first oil outlet channel (316) and a reversing valve second oil outlet channel (317) which are respectively communicated with the reversing valve cavity are also arranged in the isolation safety valve (3), the reversing valve oil inlet channel (314) is also communicated with the sampling channel, an oil drainage interface (T1) communicated with the oil drainage port (T) is also arranged on the cartridge valve body (201), the reversing valve discharge oil channel (315) and the reversing valve first oil outlet channel (316) are also communicated with the oil drainage interface (T1) through channels arranged in the cartridge valve cover (203) and the cartridge valve body (201), and the reversing valve second oil outlet channel (317) is also communicated with a control port (21) of the two-way valve; the reversing valve core (311) can be located at a first valve position or a second valve position under the action of the pilot electromagnet (312) and the reversing valve spring (313), when the reversing valve core (311) is located at the first valve position, the reversing valve oil inlet channel (314) is communicated with the reversing valve second oil outlet channel (317), and when the reversing valve core (311) is located at the second valve position, the reversing valve oil discharge channel (315) is communicated with the reversing valve second oil outlet channel (317).

5. The fault isolation cartridge valve for the steering cylinder of the rotary vane steering engine according to claim 4, wherein: an overflow valve (32) is further arranged in the isolation safety valve (3), an oil outlet of the overflow valve (32) is communicated with the reversing valve discharge oil duct (315), a first throttle valve (271) is further arranged in the cartridge valve cover (203), one end of the first throttle valve (271) is communicated with the sampling channel, and the other end of the first throttle valve is respectively communicated with oil inlets of the two-way valve control port (21) and the overflow valve (32).

6. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to claim 5, which is characterized in that: the plug-in valve cover (203) is also internally provided with a second throttling valve (272), one end of the second throttling valve (272) is communicated with the sampling channel, the other end of the second throttling valve (272) is communicated with the reversing valve oil inlet channel (314), and the first throttling valve (271) is communicated with the sampling channel through the second throttling valve (272).

7. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to claim 5, which is characterized in that: the plug-in valve cover (203) is further internally provided with a third throttling valve (273) and a fourth throttling valve (274), one end of the third throttling valve (273) is connected to the second oil outlet channel (317) of the reversing valve through a pipeline, one end of the fourth throttling valve (274) is connected to the two-way valve control port (21), and the other ends of the third throttling valve (273) and the fourth throttling valve (274) are connected to one end of the first throttling valve (271) connected with an oil inlet of the overflow valve (32).

8. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to claim 3, which is characterized in that: the sampling oil ports (X) on the two-way cartridge valves (2) are communicated through sampling oil channels (11) in the mounting valve plate (1).

9. The fault isolation cartridge valve for the steering oil cylinder of the rotary vane steering engine according to any one of claims 1 to 8, which is characterized in that: the hydraulic circuit isolation valve (4) is a two-position four-way reversing valve, the hydraulic circuit isolation valve (4) comprises an isolation valve oil inlet (41), an isolation valve discharge port (42), an isolation valve first oil outlet (43) and an isolation valve second oil outlet (44), when the hydraulic circuit isolation valve (4) is installed on the installation valve plate (1), the isolation valve oil inlet (41) is arranged through a channel in the installation valve plate (1) and a first pump station first working oil port (A1) are communicated, the isolation valve discharge port (42) is arranged through a channel in the installation valve plate (1) and a first pump station second working oil port (B1) are communicated, the isolation valve first oil outlet (43) is arranged through a channel in the installation valve plate (1) and a second pump station first working oil port (A2) are communicated, and the isolation valve second oil outlet (44) is arranged through a channel in the installation valve plate (1) and a second pump station second working oil port (B2) are communicated.

10. The utility model provides a change leaf steering wheel which characterized in that: the fault isolation cartridge valve of the steering cylinder of the rotary vane steering engine according to any one of claims 1 to 9.

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