阅读说明：本技术 一种转向控制阀组 (Steering control valve group ) 是由 虞汉中 张朋 谷洵 张胜高 冯炜 于 2020-12-11 设计创作，主要内容包括：本发明公开一种转向控制阀组,涉及转向系统技术领域,解决了现有技术中电驱车辆的双源电动泵其油路安装及管路连接困难的技术问题。包括第一进油管、第二进油管、第一出油管、第二出油管和电磁换向阀,第一进油管与第二进油管并联后再接入电磁换向阀,第一出油管与第二出油管分别与电磁换向阀连接,第一出油管与用于控制车辆转向的转向系统相连接,第二出油管与非转向系统相连接。通过该转向控制阀组可实现转向工况和非转向工况,具有构件简洁、连接简单、元器件集成度高和安装方便的优点,有利于简化重载电驱车辆转向助力系统的布置方案,优化管路布置。(The invention discloses a steering control valve group, relates to the technical field of steering systems, and solves the technical problems that in the prior art, a double-source electric pump of an electric drive vehicle is difficult in oil way installation and pipeline connection. The oil-gas-liquid separator comprises a first oil inlet pipe, a second oil inlet pipe, a first oil outlet pipe, a second oil outlet pipe and an electromagnetic directional valve, wherein the first oil inlet pipe and the second oil inlet pipe are connected in parallel and then connected into the electromagnetic directional valve, the first oil outlet pipe and the second oil outlet pipe are respectively connected with the electromagnetic directional valve, the first oil outlet pipe is connected with a steering system for controlling the steering of a vehicle, and the second oil outlet pipe is connected with a non-steering system. The steering control valve bank can realize steering working conditions and non-steering working conditions, has the advantages of simple components, simple connection, high component integration level and convenience in installation, is favorable for simplifying the arrangement scheme of a steering power-assisted system of a heavy-load electric-driven vehicle, and optimizes the pipeline arrangement.)

1. The utility model provides a steering control valves, its characterized in that advances oil pipe, first play oil pipe, second play oil pipe and electromagnetic directional valve including first oil pipe, second, first advance oil pipe with the second advances oil pipe and inserts again after parallelly connected the electromagnetic directional valve, first play oil pipe with the second go out oil pipe respectively with the electromagnetic directional valve is connected, first play oil pipe is connected with the a steering system who is used for controlling the vehicle to turn to, the second goes out oil pipe and is connected with non-steering system.

2. The set of steering control valves according to claim 1, wherein the first oil inlet pipe and the second oil inlet pipe are respectively connected in series with a check valve and then connected in parallel with the electromagnetic directional valve.

3. The set of steering control valves according to claim 2, wherein the first oil inlet pipe and the second oil inlet pipe are respectively connected in series with a strainer plug and the check valve, then connected in parallel with each other and then connected to the electromagnetic directional valve.

4. The set of steering control valves according to claim 1, wherein the first outlet line is connected in series with a throttle valve and then connected with the electromagnetic directional valve.

5. The set of steering control valves according to claim 4, further comprising an overflow valve and an oil return pipe, wherein an inlet of the overflow valve is connected to the first oil outlet pipe, and an outlet of the overflow valve is connected to the oil return pipe.

6. A steering control valve group according to claim 5, characterized in that a pressure compensator is further provided, the connecting pipeline between the throttle valve and the electromagnetic directional valve is also communicated with the inlet of the pressure compensator, and the outlet of the pressure compensator is communicated with the oil return pipe.

7. The set of steering control valves of claim 4 further including a pressure tap, said pressure tap being connected to said first flow line.

8. A steering control valve group according to any of the claims 1-7, characterized in that the steering control valve group is provided with a valve box, and the electromagnetic directional valve is mounted on the outer side of the valve box.

9. The set of steering control valves according to claim 8, wherein the first oil outlet pipe forms a first oil outlet at the box surface of the valve box, the second oil outlet pipe forms a second oil outlet at the box surface of the valve box, the first oil inlet pipe forms a first oil inlet at the box surface of the valve box, and the second oil inlet pipe forms a second oil inlet at the box surface of the valve box;

the valve box comprises two opposite vertical side faces, the first oil inlet and the second oil inlet are arranged on one of the vertical side faces, and the first oil outlet and the second oil outlet are arranged on the other vertical side face.

10. The set of steering control valves of claim 1, wherein the solenoid directional valve is a two-position, four-way solenoid directional valve.

Technical Field

The invention relates to the technical field of steering systems, in particular to a steering control valve group.

Background

With the development of the electric automobile industry, heavy off-road vehicles increasingly adopt electric drive chassis. The electric drive chassis adopts a wheel-side motor (or a wheel hub motor) to directly drive wheels to rotate, and a traditional drive axle and a traditional transmission shaft are eliminated. The traditional fuel oil automobile adopts a hydraulic power-assisted steering mode. The arrangement form has two oil sources of a steering pump and an emergency pump, and the steering pump is installed on an engine.

The electric drive chassis is not provided with a drive axle and a transmission shaft, so an emergency pump cannot be arranged on a transmission (or a transfer case between axles), and the conventional manufacturers generally adopt a double-source electric pump to provide a power source for a steering system, and the double-source electric pump and the steering system are mutually backed up. In order to ensure that the two electric pumps do not influence each other during working, related hydraulic oil paths need to be designed, and due to the fact that the valve blocks are distributed in the oil paths, installation and pipeline connection are difficult, and the arrangement scheme for simplifying the steering power-assisted system of the heavy-duty electric-driven vehicle is urgently needed.

Disclosure of Invention

The application provides a steering control valve group, has solved its oil circuit installation of double-source electric pump of the electric vehicle among the prior art and the technical problem of tube coupling difficulty.

The application provides a steering control valve group, advance oil pipe, first play oil pipe, second including first into oil pipe, second and go out oil pipe and electromagnetic directional valve, first advance oil pipe and second advance oil pipe and insert the electromagnetic directional valve after the parallelly connected, first play oil pipe and second go out oil pipe and are connected with the electromagnetic directional valve respectively, and first play oil pipe is connected with the a steering system who is used for controlling the vehicle to turn to, and the second goes out oil pipe and is connected with non-steering system.

Preferably, the first oil inlet pipe and the second oil inlet pipe are respectively connected in series with the check valve and then connected in parallel with the electromagnetic directional valve.

Preferably, the first oil inlet pipe and the second oil inlet pipe are respectively connected in series with the filter screen plug and the one-way valve in sequence, then connected in parallel and then connected into the electromagnetic directional valve.

Preferably, the first oil outlet pipe is connected with the electromagnetic directional valve after being connected with the throttle valve in series.

Preferably, still be equipped with overflow valve and oil return pipe, the import of overflow valve inserts first oil pipe, and the export of overflow valve is connected with oil return pipe.

Preferably, a pressure compensator is further arranged, a connecting pipeline between the throttle valve and the electromagnetic directional valve is further communicated with an inlet of the pressure compensator, and an outlet of the pressure compensator is communicated with the oil return pipe.

Preferably, a pressure measuring joint is further arranged and is connected into the first oil outlet pipe.

Preferably, the steering control valve group is provided with a valve box, and the electromagnetic directional valve is arranged on the outer side of the valve box.

Preferably, the first oil outlet pipe forms a first oil outlet on the box surface of the valve box, the second oil outlet pipe forms a second oil outlet on the box surface of the valve box, the first oil inlet pipe forms a first oil inlet on the box surface of the valve box, and the second oil inlet pipe forms a second oil inlet on the box surface of the valve box;

the valve box comprises two opposite vertical side faces, a first oil inlet and a second oil inlet are arranged on one of the vertical side faces, and a first oil outlet and a second oil outlet are arranged on the other vertical side face.

Preferably, the electromagnetic directional valve adopts a two-position four-way electromagnetic directional valve.

The beneficial effect of this application is as follows: can realize turning to operating mode and non-steering operating mode through this steering control valves, turn to in the operating mode double source electric pump through the valves from first play oil pipe to the steering system fuel feeding, double source electric pump is from the second play oil pipe to other non-steering system fuel feeding through the valves in the non-steering operating mode, like suspension system, hydraulic capstan system and truck-mounted crane system, this valves component is succinct, connect simply, the components and parts integrated level is high, and convenient for installation is favorable to simplifying the arrangement scheme of heavy load electricity driven vehicle power-assisted steering system, optimize the pipeline and arrange.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a schematic illustration of a hydraulic schematic of a steering control valve assembly according to the present disclosure;

FIG. 2 is a front view of a steering control valve assembly with a valve cage provided herein;

FIG. 3 is a side view of a steering control valve stack with a valve cage as provided herein.

Reference numerals: 100-a first oil inlet pipe, 110-a filter screen plug, 120-a one-way valve, 130-a first oil inlet, 200-a second oil inlet pipe, 210-a second oil inlet, 300-a first oil outlet pipe, 310-a throttle valve, 320-an overflow valve, 330-a pressure compensator, 340-a pressure measuring joint, 400-a second oil outlet pipe, 500-an electromagnetic directional valve, 510-an oil return port and 600-a valve box.

Detailed Description

The embodiment of the application provides a steering control valve group, and solves the technical problems of difficulty in oil circuit installation and pipeline connection of a double-source electric pump of an electric drive vehicle in the prior art.

The detailed description will be given in conjunction with the drawings and specific embodiments.

Example one

Referring to fig. 1, the present embodiment provides a steering control valve set, which includes a first oil inlet pipe 100, a second oil inlet pipe 200, a first oil outlet pipe 300, a second oil outlet pipe 400 and an electromagnetic directional valve 500, wherein the first oil inlet pipe 100 and the second oil inlet pipe 200 are connected in parallel and then connected to the electromagnetic directional valve 500, the first oil outlet pipe 300 and the second oil outlet pipe 400 are respectively connected to the electromagnetic directional valve 500, and the first oil outlet pipe 300 is used for supplying oil to a steering system. After being connected in parallel, the first oil inlet pipe 100 and the second oil inlet pipe 200 are connected with the same oil inlet of the electromagnetic directional valve 500, and oil of the double-source electric pump enters the steering control valve group through the first oil inlet pipe 100 and the second oil inlet pipe 200 respectively.

In electric vehicles, particularly heavy off-road vehicles, a dual-source electric pump is used to provide a power source for a steering system, and the dual-source electric pump and the steering system are in backup. By adopting the steering control valve group of the embodiment, the first oil inlet pipe 100 and the second oil inlet pipe 200 are respectively associated with one electric pump, the two electric pumps form a double-source electric pump, and the output from the first oil outlet pipe 300 or the output from the second oil outlet pipe 400 is controlled through the valve group by the transposition control of the electromagnetic directional valve 500.

When the oil is output from the first oil outlet pipe 300, the first oil outlet pipe 300 is used for supplying oil to the steering system, and enters a steering working condition, referring to fig. 1, when the steering working condition is met, the electromagnet of the electromagnetic directional valve 500 is not powered, and the hydraulic oil enters the steering system from the first oil outlet pipe 300, and the wheels are pushed by other valves of the steering system to steer.

When the oil is output from the second oil outlet pipe 400, the second oil outlet pipe 400 is used for supplying oil to other systems such as a suspension system, a hydraulic winch system or a truck-mounted crane system, so as to realize a non-steering working condition, referring to fig. 1, when the oil is in the non-steering working condition, the electromagnet is powered, and hydraulic oil flows to the second oil outlet pipe 400 through the electromagnetic directional valve 500 and cooperates with other valve elements to realize the lifting and other functions of the suspension system.

Through the steering control valve group, the steering of the electrically-driven chassis can be realized, and oil can be supplied to other systems, so that the pipeline arrangement is optimized; the steering control valve group has the advantages of simple components, simple connection, high integration level of components and convenient installation.

Preferably, the electromagnetic directional valve 500 adopts a two-position four-way electromagnetic directional valve 500, and the arrangement and connection relationship of the first oil inlet pipe 100, the second oil inlet pipe 200, the first oil outlet pipe 300, the second oil outlet pipe 400 and other related pipelines are realized. It is understood that the solenoid directional valve 500 may also be implemented in more alternative ways, such as three-position four-way.

In this embodiment, the steering control valve group comprises a first oil outlet pipe 300 and a second oil outlet pipe 400, the first oil outlet pipe 300 is used for the steering system, and the second oil outlet pipe 400 is used for other systems, such as a suspension system, a hydraulic winch system, a truck-mounted crane system and the like. It can be understood that the second oil outlet pipe 400 can also be provided with a greater number of oil outlets, each oil outlet is respectively used for supplying oil to different systems, and accordingly, the number of positions and the number of the selected electromagnetic directional valves 500 are increased, and the oil outlets are independent of each other.

Preferably, referring to fig. 1, a strainer plug 110 and a check valve 120 are disposed between the first oil inlet pipe 100 and the electromagnetic directional valve 500, and the strainer plug 110 and the check valve 120 are disposed between the second oil inlet pipe 200 and the electromagnetic directional valve 500, so that the oil pumped out of the dual-source electric pump is filtered by the strainer plug 110, and thus, impurities are prevented from entering a subsequent hydraulic system. The oil is prevented from flowing backward by the check valve 120.

Along the liquid inlet direction of the pipeline, the filter screen plug 110 is arranged in front of the one-way valve 120, and the filter screen plug 110 is used for filtering impurities of oil entering the one-way valve and playing a role in protecting the one-way valve.

The embodiment further provides an implementation scheme that a check valve 120 is disposed between the first oil inlet pipe 100 and the electromagnetic directional valve 500, another check valve 120 is disposed between the second oil inlet pipe 200 and the electromagnetic directional valve 500, and the filter plug 110 is omitted.

Preferably, the first outlet pipe 300 is connected with the electromagnetic directional valve 500 after being connected with the throttle valve 310 in series. Thus, during a steering condition, the flow of hydraulic oil into the steering system is restricted by the throttle valve 310.

Preferably, the steering control valve group is further provided with a pressure compensator 330, the connecting pipeline between the throttle valve 310 and the electromagnetic directional valve 500 is further communicated with an inlet of the pressure compensator 330, and an outlet of the pressure compensator 330 is communicated with an oil outlet. Therefore, the flow of the hydraulic oil entering the steering system is limited through the combined action of the throttle valve 310 and the pressure compensator 330, the response time of the steering system is ensured to be in a reasonable range, and the over-sensitive steering of the vehicle during high-speed running is avoided.

In the above solution, the flow rate of the hydraulic oil entering the steering system is limited by the cooperation of the throttle valve 310 and the pressure compensator 330. It will be appreciated that other conventional hydraulic timing circuits may be used to limit the flow of hydraulic oil through the first outlet line to the steering system.

Preferably, the connection line between the throttle valve 310 and the first oil outlet pipe 300 is also communicated with the inlet of the relief valve 320, and the outlet of the relief valve 320 is communicated with the oil return port 510. The overflow valve 320 limits the highest working pressure of the steering oil circuit, and the hydraulic system is protected.

Referring to fig. 1, the outlet of the overflow valve 320 and the outlet of the pressure compensator 330 may be respectively gathered together through a pipeline and then returned through the same oil return port 510, so as to further reduce the number of components of the steering control valve assembly, and the installation is convenient.

Preferably, the steering control valve group is further provided with a pressure measuring joint 340, the pressure measuring joint 340 is connected to a connecting pipeline between the throttling valve 310 and the first oil outlet pipe 300, and the pressure measuring joint 340 is used for measuring the oil hydraulic pressure in a pipeline near the first oil outlet pipe 300, namely, the pressure of a steering oil way is detected, so that the system maintenance and the overhaul are facilitated.

Example two

The present embodiment provides a steering control valve assembly embodied in the form of a valve box 600, and the components and the related connection relationship of the steering control valve assembly refer to the first embodiment.

Referring to fig. 2 and 3, the valve box 600 is provided in a cubic shape. Cube-shaped valve box 600 has top surface, bottom surface and as week side in proper order the first perpendicular side, the second perpendicular side, the third perpendicular side and the fourth perpendicular side that the hoop distributes, and first perpendicular side sets up with the third perpendicular side is relative, and the second perpendicular side sets up with the fourth perpendicular side is relative.

The electromagnetic directional valve 500 is arranged at the top of the valve box 600, and the electromagnetic directional valve 500 is arranged outside the valve box 600, so that the influence of the large specification of the directional valve on the valve box 600 is reduced.

The first oil outlet pipe 100 forms a first oil outlet 130 on the box surface of the valve box 600, the second oil outlet pipe 200 forms a second oil outlet 210 on the box surface of the valve box 600, the first oil inlet pipe forms a first oil inlet on the box surface of the valve box, and the second oil inlet pipe forms a second oil inlet on the box surface of the valve box.

A first vertical side is provided with a first oil inlet 130, a second oil inlet 210 and an oil return port 510 which are all arranged in a form of a countersunk hole; the third vertical side is provided with a first oil outlet and a second oil outlet.

At the second vertical side and the fourth vertical side, two check valves 120, a pressure compensator 330, and a pressure measuring joint 340 are respectively disposed. Wherein, the two check valves 120 are respectively arranged at the second vertical side and the fourth vertical side, and are oppositely arranged, and the first oil inlet pipe 100 and the second oil inlet pipe 200 are respectively arranged close to the respective corresponding check valves 120; the pressure compensator 330 and the pressure measuring joint 340 are also respectively arranged on the second vertical side and the fourth vertical side, namely the pressure compensator 330 and the pressure measuring joint 340 are arranged on two opposite vertical sides, so that the utilization rate of each vertical side surface of the box body is increased, and the whole steering control valve group is more compact.

Referring to fig. 3, the overflow valve 320 is installed at the first vertical side, and the overflow valve 320 is offset from the three oil ports formed at the first vertical side.

When the steering control valve group is manufactured, firstly, a valve block is processed through a cartridge valve interface, an oil passage and a fixed threaded port, and when the steering control valve group is assembled, the filter screen plug 110, the overflow valve 320, the electromagnetic directional valve 500, the one-way valve 120, the throttle valve 310, the pressure compensator 330 and the pressure measuring joint 340 are installed at corresponding positions of the valve block, so that the assembly of the steering control valve group is completed.

Preferably, the filter screen plug 110 is detachably installed at the first oil inlet and the second oil inlet, and is screwed into the oil inlet in a threaded manner, for example, so as to facilitate periodic replacement.

The strainer plug 110 is disposed in a pipeline before oil enters the electromagnetic directional valve 500, and the strainer plug 110 may be disposed in front of a related oil inlet, behind the related oil inlet, or at a position of the oil inlet.

Through the arrangement of each component of the steering control valve group with the valve box, the steering control valve group has the advantage of compact structure, and the arrangement of the positions of the hydraulic components and the oil ports is also favorable for installation and maintenance.

The steering control valve group is in the form of the valve box 600, has the advantages of compact structure, high integration level of components, simplicity in operation and convenience in installation on the basis of realizing the functions of steering of the electric drive chassis and supplying oil to a suspension system (or other systems needing hydraulic oil sources), and is suitable for a steering system of a multi-shaft steering automobile.

It will be appreciated that the valve box 600 described above is not limited to a cubical box shape, but may be provided in other shapes, such as a prism.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.