CN114658895A

CN114658895A - Electric control multi-way valve

Info

Publication number: CN114658895A
Application number: CN202210287138.9A
Authority: CN
Inventors: 孙一帆; 贺犇; 张辉; 阮榆峰; 骆坚翔; 何贤剑
Original assignee: Zhejiang Haihong Hydraulic Technology Co ltd
Current assignee: Zhejiang Haihong Hydraulic Technology Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-06-24

Abstract

The invention relates to an electric control multi-way valve which comprises a valve body, a lifting control assembly, an inclination control assembly, an accessory control assembly, a motor and a controller, wherein the valve body is provided with a valve seat; the valve body has oil return opening and the oil inlet that communicates with the oil pump, oil return opening and oil inlet respectively with lift cylinder, slope hydro-cylinder and accessory hydro-cylinder intercommunication, the lift control subassembly sets up in the valve body, and be used for controlling lift cylinder's motion, the slope control subassembly sets up in the valve body, and be used for controlling the motion of accessory hydro-cylinder, the oil pump is connected to the motor electricity, the motor is used for driving the oil pump to rotate the fuel feeding, controller and lift control subassembly, the slope control subassembly, accessory control subassembly and motor electricity are connected, and can control motor and lift control subassembly, slope control subassembly or accessory control subassembly synchronous motion. Therefore, the number of the valve bodies, the number of oil ways and internal elements in the valve bodies can be reduced while the multi-way valve is protected, and the processing and assembling difficulty is reduced.

Description

Electric control multi-way valve

Technical Field

The invention relates to the technical field of hydraulic valve bodies, in particular to an electric control multi-way valve.

Background

Due to the development of smart manufacturing products and industries, such as smart warehousing, smart logistics, smart factories, industrial internet, etc., there is an increasing demand for AGV unmanned forklifts. However, most of the existing multi-way valves need manual control and operation, and the unmanned driving or remote control function of the AGV unmanned forklift cannot be realized.

Moreover, in order to realize multiple functions in the conventional multi-way valve, a plurality of valve bodies are usually required to be matched for use, but the number of the valve bodies is increased, so that the processing and assembling difficulty is increased.

Disclosure of Invention

In view of the above, it is necessary to provide an electrically controlled multi-way valve which can reduce the number of valve bodies while achieving the unmanned or remote control function of the AGV.

The invention provides an electric control multi-way valve, comprising: the valve body is provided with an oil return port and an oil inlet communicated with the oil pump, and the oil return port and the oil inlet are respectively communicated with the lifting oil cylinder, the tilting oil cylinder and the accessory oil cylinder; the lifting control assembly is arranged on the valve body and is used for controlling the movement of the lifting oil cylinder; the inclination control assembly is arranged on the valve body and is used for controlling the movement of the inclination oil cylinder; the accessory control assembly is arranged on the valve body and is used for controlling the movement of the accessory oil cylinder; the motor is electrically connected with the oil pump and is used for driving the oil pump to rotate for supplying oil; and the controller is electrically connected with the lifting control assembly, the inclination control assembly, the accessory control assembly and the motor and can control the motor to synchronously move with the lifting control assembly, the inclination control assembly or the accessory control assembly.

According to the electric control multi-way valve, the lifting control assembly, the inclination control assembly and the accessory control assembly are arranged on one valve body and share one group of oil return opening and oil inlet, so that the processing quantity of the oil return opening and the oil inlet can be reduced, the electric control multi-way valve can realize multiple functions, and meanwhile, the assembly and processing difficulty of the valve body is reduced; and, this automatically controlled multiple unit valve only when needs during operation, the controller just can control the motor and start, the motor drive oil pump rotates the fuel feeding, pressure fluid passes through oil inlet oil feed, the action of controller control lift control subassembly, slope control subassembly or accessory control subassembly simultaneously, in order to guarantee lift control subassembly, required oil mass and the fuel feeding volume phase-match of oil pump when slope control subassembly or accessory control subassembly do corresponding action, thereby can control the speed of rising better, realize unmanned driving or the remote control function of AGV unmanned fork truck.

In one embodiment, a protection oil path communicating the oil inlet and the oil return port is arranged in the valve body, and the electronic control multi-way valve further comprises an overflow valve arranged on the protection oil path.

So set up, when pressure fluid pressure in the protection oil circuit reached overflow pressure, the overflow valve was opened and is realized the overflow to can further protect automatically controlled multiple unit valve.

In one embodiment, the valve body further has a first oil inlet and outlet communicated with the lift cylinder, a first oil return path is arranged between the first oil inlet and outlet and the oil return port, and a first oil inlet path is arranged between the oil inlet and the first oil inlet and outlet; the lifting control assembly comprises a first control valve and a second control valve, the first control valve is arranged on the first oil return path, the second control valve is arranged on the first oil inlet path, and the first control valve and the second control valve are electrically connected with the controller.

According to the arrangement, when the lifting oil cylinder needs to do lifting action, the controller controls the opening of the second control valve to be matched with the oil supply quantity of the oil pump, so that the lifting speed can be better controlled, the condition that the multi-way valve is damaged due to the fact that the oil pump supplies oil when the electric control multi-way valve does not work or the oil supply quantity of the oil pump is larger than the required quantity is avoided, and the electric control multi-way valve is protected; when the lifting oil cylinder needs to do descending action, the controller controls the first control valve to open corresponding opening degree, and the lifting oil cylinder is prevented from descending too fast.

In one embodiment, the lifting control assembly further includes a check valve disposed in the first oil inlet passage between the second control valve and the first oil inlet/outlet.

So set up, the check valve only can allow pressure fluid to move to the direction of first business turn over hydraulic fluid port from the oil inlet to can prevent to get back to the oil inlet and influence automatically controlled multiple unit valve's normal work through first oil inlet way from the pressure fluid of first business turn over hydraulic fluid port oil return.

In one embodiment, the lift control assembly further includes a pressure compensation valve disposed in the first oil return path between the first control valve and the oil return port.

By the arrangement, when the lifting oil cylinder needs to do descending action, the opening degree of the pressure compensation valve can be adjusted all the time, so that the pressures borne by the two ends of the pressure compensation valve are kept consistent all the time, the descending speed of the goods is only related to the opening degree of the first control valve, and the stability of the lifting oil cylinder during descending action can be guaranteed.

In one embodiment, the first control valve and/or the second control valve is a proportional solenoid valve.

So set up, proportional solenoid valve can be according to the flow of proportional control pressure fluid, realizes adjusting the aperture between first business turn over hydraulic fluid port and oil return opening or the oil inlet.

In one embodiment, the valve body further has a second oil inlet and outlet and a third oil inlet and outlet which are communicated with two ends of the tilt cylinder, a second oil return path is arranged between the oil return port and the second oil inlet and outlet, a third oil return path is arranged between the oil return port and the third oil inlet and outlet, a second oil inlet path is arranged between the oil inlet and the second oil inlet and outlet, and third oil inlet paths are respectively arranged between the oil inlet and the third oil inlet and outlet; the inclination control assembly comprises a first valve rod which is slidably arranged in the second oil return path, the third oil return path, the second oil inlet path and the third oil inlet path in a penetrating mode, and a first driving piece which is arranged on the valve body, wherein the first driving piece is electrically connected with the controller and is used for driving the first valve rod to slide in a reciprocating mode.

So set up, the controller controls the corresponding distance of first driving piece drive first valve rod slip to realize the aperture of each hydraulic fluid port and the fuel delivery phase-match of oil pump, thereby can control the speed of rising better, and protect automatically controlled multiple unit valve.

In one embodiment, the first driving member includes a first electromagnet and a second electromagnet respectively located at two ends of the first valve rod, and the first electromagnet and the second electromagnet can generate pushing force or pulling force on the first valve rod through current.

So set up, first electro-magnet and second electro-magnet circular telegram electric current's size can change the size that produces thrust or pulling force to first valve rod to the aperture of each hydraulic fluid port of control.

In one embodiment, the valve body further has a fourth oil inlet and outlet and a fifth oil inlet and outlet which are communicated with two ends of the accessory oil cylinder, a fourth oil return path is arranged between the oil return port and the fourth oil inlet and outlet, a fifth oil return path is arranged between the oil return port and the fifth oil inlet and outlet, a fourth oil inlet path is arranged between the oil inlet and the fourth oil inlet and outlet, and a fifth oil inlet path is arranged between the oil inlet and the fifth oil inlet and outlet; the accessory control assembly comprises a second valve rod and a second driving piece, the second valve rod penetrates through the fourth oil return path, the fifth oil return path, the fourth oil inlet path and the fifth oil inlet path in a sliding mode, the second driving piece is arranged on the valve body, the second driving piece is electrically connected with the controller, and the controller can control the second driving piece to drive the second valve rod to slide in a reciprocating mode.

So set up, the controller control second driving piece drive second valve stem slides corresponding distance to realize the aperture of each hydraulic fluid port and the fuel feeding capacity phase-match of oil pump, thereby can control the rising speed better, and protect automatically controlled multiple unit valve.

In one embodiment, the second driving member includes a third electromagnet and a fourth electromagnet respectively located at two ends of the second valve rod, and the third electromagnet and the fourth electromagnet can generate pushing force or pulling force on the second valve rod through current.

So set up, third electro-magnet and fourth electro-magnet circular telegram electric current's size can change the size that produces thrust or pulling force to the second valve stem to the aperture of each hydraulic fluid port is controlled.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electrically controlled multi-way valve provided by the present invention;

FIG. 2 is a schematic structural diagram of FIG. 1 from a top view according to the present invention;

FIG. 3 is a schematic cross-sectional view taken along line a-a of FIG. 2 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure shown at b in FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the structure at c in FIG. 3 according to the present invention;

fig. 6 is a pipeline diagram of the electric control multi-way valve provided by the invention.

Reference numerals: 1. a valve body; 11. protecting an oil circuit; 12. a first oil return path; 13. a first oil inlet path; 141. a second oil return path; 142. a third oil return path; 151. a second oil inlet path; 152. a third oil inlet passage; 161. a fourth oil return path; 162. a fifth oil return path; 171. a fourth oil inlet path; 172. a fifth oil inlet path; 2. a lift control assembly; 21. a first control valve; 22. a second control valve; 23. a one-way valve; 24. a pressure compensating valve; 3. a tilt control assembly; 31. a first valve stem; 32. a first driving member; 321. a first electromagnet; 322. a second electromagnet; 4. an accessory control component; 41. a second valve stem; 42. a second driving member; 421. a third electromagnet; 422. a fourth electromagnet; 5. an overflow valve; p, an oil inlet; t, an oil return port; a1, a first oil inlet and outlet; a2, a second oil inlet and outlet; a3, a fourth oil inlet and outlet; b2, a third oil inlet and outlet; b3 and a fifth oil inlet and outlet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "first", "second" and "first" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Due to the development of smart manufacturing products and industries, such as smart warehousing, smart logistics, smart factories, industrial internet, etc., there is an increasing demand for AGV unmanned forklifts. However, most of the existing multi-way valves need manual control and operation, and the unmanned driving or remote control function of the AGV unmanned forklift cannot be realized. Moreover, in order to realize multiple functions in the conventional multi-way valve, a plurality of valve bodies are usually required to be matched for use, but the number of the valve bodies is increased, so that the processing and assembling difficulty is increased.

In order to solve the above problems, as shown in fig. 1 to 6, the present invention provides an electrically controlled multi-way valve capable of reducing the number of valve bodies while achieving an unmanned or remote control function of an AGV.

As shown in fig. 1 and 3, specifically, the electrically controlled multi-way valve includes a valve body 1, a lift control assembly 2, a tilt control assembly 3, an accessory control assembly 4, a motor and a controller; valve body 1 has oil return port T and the oil inlet P who communicates with the oil pump, oil return port T and oil inlet P respectively with lift cylinder, slope hydro-cylinder and accessory hydro-cylinder intercommunication, lift control subassembly 2 sets up in valve body 1, and be used for controlling lift cylinder's motion, slope control subassembly 3 sets up in valve body 1, and be used for controlling the motion of slope hydro-cylinder, accessory control subassembly 4 sets up in valve body 1, and be used for controlling the motion of accessory hydro-cylinder, the oil pump is connected to the motor electricity, the motor is used for driving the oil pump to rotate the fuel feeding, controller and lift control subassembly 2, slope control subassembly 3, accessory control subassembly 4 and motor electricity are connected, and can control motor and lift control subassembly 2, slope control subassembly 3 or accessory control subassembly 4 synchronous motion.

As mentioned above, in the conventional multi-way valve, in order to implement multiple functions, multiple valve bodies are usually required to be used in cooperation, but this may increase the number of valve bodies, thereby increasing the difficulty of processing and assembling. In the electric control multi-way valve provided by the embodiment of the invention, the lifting control assembly 2, the inclination control assembly 3 and the accessory control assembly 4 are all arranged on one valve body 1, so that the assembly difficulty of the valve body 1 can be reduced while the electric control multi-way valve can realize multiple functions, and meanwhile, the lifting control assembly 2, the inclination control assembly 3 and the accessory control assembly 4 share one group of oil return port T and oil inlet P, so that the processing number of the oil return port T and the oil inlet P can be reduced, and the processing difficulty of the valve body 1 is reduced.

In addition, in the conventional multi-way valve, in order to avoid the situation that the multi-way valve is damaged due to the fact that oil is supplied to the oil pump when the multi-way valve does not work or the oil supply amount of the oil pump is larger than a required amount, an unloading element is usually arranged in the multi-way valve, so that the number of oil passages and internal elements in the valve body is increased, and the processing difficulty is further increased. In the electric control multi-way valve provided by the embodiment of the invention, only when the electric control multi-way valve needs to work, the controller controls the motor to start, the motor drives the oil pump to rotate to supply oil, pressure oil enters the oil through the oil inlet P, and meanwhile, the controller controls the lifting control assembly 2, the inclination control assembly 3 or the accessory control assembly 4 to act so as to ensure that the oil quantity required by the corresponding action of the lifting control assembly 2, the inclination control assembly 3 or the accessory control assembly 4 is matched with the oil supply quantity of the oil pump, so that the lifting speed can be better controlled, and the electric control multi-way valve is protected. Meanwhile, program control can be achieved through control of the controller, the unmanned requirement of the AGV unmanned forklift is met, and modernization requirements such as remote control can be adopted.

As shown in fig. 3, a protection oil path 11 communicating the oil inlet P and the oil return port T is arranged in the valve body 1, and the electronic control multi-way valve further comprises an overflow valve 5 arranged on the protection oil path 11. When the pressure of the pressure oil in the protection oil circuit 11 reaches the overflow pressure, the overflow valve 5 is opened to realize overflow, so that the electric control multi-way valve is prevented from being damaged due to overlarge pressure caused by oil supply of the oil pump when the electric control multi-way valve does not work or oil supply quantity of the oil pump is larger than demand, and the electric control multi-way valve can be further protected.

As shown in fig. 1 and 3, the valve body 1 further has a first oil inlet/outlet a1 communicated with the lift cylinder, a first oil return path 12 is provided between the first oil inlet/outlet a1 and the oil return port T, and a first oil inlet path 13 is provided between the oil inlet P and the first oil inlet/outlet a 1; the lifting control assembly 2 comprises a first control valve 21 and a second control valve 22, wherein the first control valve 21 is arranged on the first oil return path 12, the second control valve 22 is arranged on the first oil inlet path 13, and the first control valve 21 and the second control valve 22 are electrically connected with the controller. When the second control valve 22 is opened, pressure oil can enter the lift cylinder from the first oil inlet/outlet a1 after passing through the first oil inlet path 13 from the oil inlet P, and the lift cylinder performs a lifting action; when the first control valve 21 is opened, the pressure oil can return from the first oil inlet/outlet port a1 through the first oil return passage 12 and then return from the oil return port T, and the lift cylinder performs a lowering operation.

In one embodiment, the first control valve 21 and the second control valve 22 are both proportional solenoid valves. The proportional solenoid valve can proportionally output current to the proportional electromagnet, the proportional electromagnet outputs force and proportionally moves the position of the valve core, so that the flow of pressure oil is proportionally controlled, the opening between the first oil inlet/outlet A1 and the oil return opening T or the oil inlet P is adjusted, and the electric control multi-way valve can be used in occasions with higher requirements on adjusting positions or speed precision.

When the lifting oil cylinder needs to do lifting action, the controller controls the motor to start, the motor drives the oil pump to rotate to supply oil, pressure oil enters the oil through the oil inlet P, and meanwhile the controller controls the second control valve 22 to open so as to ensure that the opening degree of the second control valve 22 is matched with the oil supply quantity of the oil pump, so that the lifting speed can be better controlled, the condition that the oil pump supplies oil when the electric control multi-way valve does not work or the oil supply quantity of the oil pump is greater than the demand quantity to cause damage to the multi-way valve is avoided, and the electric control multi-way valve is protected. When the lift cylinder needs to descend, the controller controls the first control valve 21 to open a corresponding opening degree, so that the lift cylinder is prevented from descending too fast. Of course, in other embodiments, the first control valve 21 and the second control valve 22 may be other types of valves as long as the opening and closing of the oil passage can be controlled. The opening degree refers to the degree of opening of a communication port between the first oil inlet/outlet port a1 and the oil inlet P and the oil return port T, and the flow rate of pressure oil can be directly influenced.

As shown in fig. 3, the lifting control assembly 2 further includes a check valve 23, and the check valve 23 is disposed in the first oil inlet passage 13 between the second control valve 22 and the first oil inlet/outlet port a 1. The check valve 23 can only allow the pressure oil to move from the oil inlet P to the first oil inlet/outlet a1, so that the pressure oil returning from the first oil inlet/outlet a1 can be prevented from returning to the oil inlet P through the first oil inlet passage 13 to affect the normal operation of the electrically controlled multi-way valve.

As shown in fig. 2, the lift control assembly 2 further includes a pressure compensating valve 24, and the pressure compensating valve 24 is disposed in the first oil return path 12 between the first control valve 21 and the oil return port T. When the lifting cylinder needs to do descending action, under the action of gravity of external articles such as goods carried by a storage vehicle or a forklift, pressure oil in the lifting cylinder flows out from the first oil inlet/outlet port A1 and enters the first control valve 21, at the moment, the pressure compensation valve 24 is in a closed state, and the first oil return way 12 between the first control valve 21 and the oil return port T is disconnected; when the pressure of the pressure oil liquid reaches a certain value, the pressure compensation valve 24 is opened, the opening degree of the pressure compensation valve 24 can be adjusted all the time, so that the pressures borne by the two ends of the pressure compensation valve 24 are kept consistent all the time, the descending speed of the goods is only related to the opening degree of the first control valve 21, and the stability of the lifting oil cylinder in descending action can be ensured.

As shown in fig. 3 to 4, the valve body 1 further has a second oil inlet/outlet a2 and a third oil inlet/outlet B2 communicated with two ends of the tilt cylinder, a second oil return path 141 is provided between the oil return port T and the second oil inlet/outlet a2, a third oil return path 142 is provided between the oil return port T and the third oil inlet/outlet B2, a second oil inlet path 151 is provided between the oil inlet P and the second oil inlet/outlet a2, and third oil inlet paths 152 are respectively provided between the oil inlet P and the third oil inlet/outlet B2; the tilt control assembly 3 includes a first valve rod 31 slidably disposed through the second oil return path 141, the third oil return path 142, the second oil inlet path 151 and the third oil inlet path 152, and a first driving member 32 disposed on the valve body 1, wherein the first driving member 32 is electrically connected to the controller and is used for driving the first valve rod 31 to slide reciprocally.

When the first driving element 32 drives the first valve rod 31 to slide upwards, the oil inlet P is communicated with the third oil inlet and outlet B2, the oil return port T is communicated with the second oil inlet and outlet a2, pressure oil passes through the third oil inlet and outlet 152 from the oil inlet P and then enters one end of the oil cylinder from the third oil inlet and outlet B2, oil at the other end of the oil cylinder passes through the second oil return path 141 from the second oil inlet and outlet a2 and then returns from the oil return port T, and the tilting oil cylinder acts. When the first driving element 32 drives the first valve rod 31 to slide downwards, the oil inlet P is communicated with the second oil inlet/outlet a2, the oil return port T is communicated with the third oil inlet/outlet B2, pressure oil passes through the second oil inlet path 151 from the oil inlet P and then enters one end of the oil cylinder from the second oil inlet/outlet a2, oil at the other end of the oil cylinder passes through the third oil inlet/outlet B2 and then returns from the oil return port T after passing through the third oil return path 142, and the inclined oil cylinder reversely acts or resets.

Further, the first driving member 32 includes a first electromagnet 321 and a second electromagnet 322 respectively disposed at two ends of the first valve rod 31, and the first electromagnet 321 and the second electromagnet 322 can generate a pushing force or a pulling force on the first valve rod 31 by an electric current. The controller can control the electric current size of first electro-magnet 321 and second electro-magnet 322, the size of first electro-magnet 321 and second electro-magnet 322 circular telegram electric current can change and produce thrust or tensile size to first valve rod 31, thereby control the aperture of each oil port in order to control the business turn over oil mass, in order to realize the aperture of each oil port and the fuel feeding capacity phase-match of oil pump, thereby can control the rising speed better, avoid appearing the oil pump when automatically controlled multiple unit valve does not carry out during operation fuel feeding or the fuel feeding capacity of oil pump and be greater than the demand and lead to the condition that the valve damaged, thereby protect automatically controlled multiple unit valve. In one embodiment, magnets having the same magnetism as the first electromagnet 321 and the second electromagnet 322 are disposed at both ends of the first valve rod 31, and the first valve rod 31 slides upward when the first electromagnet 321 is energized and the first valve rod 31 slides downward when the second electromagnet 322 is energized. Of course, in other embodiments, magnets or iron blocks with opposite magnetism to the first electromagnet 321 and the second electromagnet 322 when the first electromagnet 321 is energized may be disposed at both ends of the first valve rod 31, and the first valve rod 31 slides downward when the first electromagnet 321 is energized and slides upward when the second electromagnet 322 is energized.

As shown in fig. 3 and 5, the valve body 1 further has a fourth oil inlet/outlet A3 and a fifth oil inlet/outlet B3 that are communicated with two ends of the accessory oil cylinder, a fourth oil return path 161 is provided between the oil return port T and the fourth oil inlet/outlet A3, a fifth oil return path 162 is provided between the oil return port T and the fifth oil inlet/outlet B3, a fourth oil inlet path 171 is provided between the oil inlet P and the fourth oil inlet/outlet A3, and a fifth oil inlet path 172 is provided between the oil inlet P and the fifth oil inlet/outlet B3; the accessory control assembly 4 includes a second valve rod 41 slidably disposed through the fourth oil return path 161, the fifth oil return path 162, the fourth oil inlet path 171 and the fifth oil inlet path 172, and a second driving member 42 disposed on the valve body 1, the second driving member 42 is electrically connected to the controller, and the controller can control the second driving member 42 to drive the second valve rod 41 to slide reciprocally.

When the second driving element 42 drives the second valve rod 41 to slide upwards, the oil inlet P is communicated with the fifth oil inlet/outlet port B3, the oil return port T is communicated with the fourth oil inlet/outlet port A3, pressure oil passes through the fifth oil inlet path 172 from the oil inlet P and then enters one end of the oil cylinder from the fifth oil inlet/outlet port B3, oil at the other end of the oil cylinder passes through the fourth oil return path 161 from the fourth oil inlet/outlet port A3 and then returns from the oil return port T, and the accessory oil cylinder acts. When the second driving member 42 drives the second valve rod 41 to slide downward, the oil inlet P is communicated with the fourth oil inlet/outlet A3, the oil return port T is communicated with the fifth oil inlet/outlet B3, pressure oil passes through the fourth oil inlet path 171 from the oil inlet P and then enters one end of the oil cylinder from the fourth oil inlet/outlet A3, oil at the other end of the oil cylinder passes through the fifth oil inlet/outlet B3 and then returns through the fifth oil return path 162 and then returns from the oil return port T, and the accessory oil cylinder reversely acts or resets.

Further, the second driving member 42 includes a third electromagnet 421 and a fourth electromagnet 422 respectively disposed at two ends of the second valve rod 41, and the third electromagnet 421 and the fourth electromagnet 422 can generate a pushing force or a pulling force on the second valve rod 41 by an electric current. The controller can control, the electric current size of third electro-magnet 421 and fourth electro-magnet 422, the size of third electro-magnet 421 and fourth electro-magnet 422 circular current can change and produce thrust or tensile size to second valve rod 41, thereby control the aperture of each hydraulic fluid port in order to control the business turn over oil mass, with the fuel feeding capacity phase-match of the aperture that realizes each hydraulic fluid port and oil pump, thereby can control the rising speed better, avoid appearing the oil pump when automatically controlled multiple unit valve does not carry out the during operation fuel feeding or the fuel feeding capacity of oil pump and be greater than the demand and lead to the condition that the multiple unit valve damaged, thereby protect automatically controlled multiple unit valve. In one embodiment, the second valve rod 41 has two ends provided with magnets having the same magnetic property as that of the third electromagnet 421 and the fourth electromagnet 422 when energized, and the second valve rod 41 slides upward when the third electromagnet 421 is energized and slides downward when the fourth electromagnet 422 is energized. Of course, in another embodiment, magnets or iron blocks having opposite magnetism to the third electromagnet 421 and the fourth electromagnet 422 when they are energized may be provided at both ends of the second valve rod 41, and the second valve rod 41 may slide downward when the third electromagnet 421 is energized and slide upward when the fourth electromagnet 422 is energized.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. An electrically controlled multiple-way valve, comprising:

the valve body (1) is provided with an oil return port (T) and an oil inlet (P) communicated with an oil pump, and the oil return port (T) and the oil inlet (P) are respectively communicated with the lifting oil cylinder, the inclined oil cylinder and the accessory oil cylinder;

the lifting control assembly (2) is arranged on the valve body (1) and is used for controlling the movement of the lifting oil cylinder;

the inclination control assembly (3) is arranged on the valve body (1) and is used for controlling the movement of the inclination oil cylinder;

the accessory control assembly (4) is arranged on the valve body (1) and is used for controlling the movement of the accessory oil cylinder;

the motor is electrically connected with the oil pump and is used for driving the oil pump to rotate for supplying oil; and the number of the first and second groups,

and the controller is electrically connected with the lifting control assembly (2), the inclination control assembly (3), the accessory control assembly (4) and the motor and can control the motor to synchronously move with the lifting control assembly (2), the inclination control assembly (3) or the accessory control assembly (4).

2. The electric control multiway valve according to claim 1, wherein a protection oil path (11) communicating the oil inlet (P) and the oil return port (T) is arranged in the valve body (1), and the electric control multiway valve further comprises an overflow valve (5) arranged on the protection oil path (11).

3. The electrically controlled multiway valve according to claim 1, wherein the valve body (1) further has a first oil inlet/outlet (a1) communicated with the lift cylinder, a first oil return path (12) is provided between the first oil inlet/outlet (a1) and the oil return port (T), and a first oil inlet path (13) is provided between the oil inlet (P) and the first oil inlet/outlet (a 1);

the lifting control assembly (2) comprises a first control valve (21) and a second control valve (22), the first control valve (21) is arranged on the first oil return way (12), the second control valve (22) is arranged on the first oil inlet way (13), and the first control valve (21) and the second control valve (22) are electrically connected with the controller.

4. The electrically controlled multiple-way valve according to claim 3, characterized in that the lifting control assembly (2) further comprises a check valve (23), the check valve (23) being disposed in the first oil inlet passage (13) between the second control valve (22) and the first oil inlet/outlet port (A1).

5. The electrically controlled multiple valve according to claim 3, characterized in that the lift control assembly (2) further comprises a pressure compensation valve (24), the pressure compensation valve (24) being arranged in the first oil return (12) between the first control valve (21) and the oil return (T).

6. Electrically controlled multiple-way valve according to claim 3, characterized in that the first control valve (21) and/or the second control valve (22) are proportional solenoid valves.

7. The electric control multi-way valve according to claim 1, wherein the valve body (1) further has a second oil inlet and outlet (a2) and a third oil inlet and outlet (B2) which are communicated with two ends of the tilt cylinder, a second oil return path (141) is provided between the oil return port (T) and the second oil inlet and outlet (a2), a third oil return path (142) is provided between the oil return port (T) and the third oil inlet and outlet (B2), a second oil inlet path (151) is provided between the oil inlet (P) and the second oil inlet and outlet (a2), and third oil inlet paths (152) are provided respectively for the oil inlet (P) and the third oil inlet and outlet (B2);

the inclination control assembly (3) comprises a second oil return path (141), a third oil return path (142), a second oil inlet path (151) and a first valve rod (31) arranged on a third oil inlet path (152) in a sliding penetrating mode, and a first driving piece (32) arranged on the valve body (1), wherein the first driving piece (32) is electrically connected with the controller and used for driving the first valve rod (31) to slide in a reciprocating mode.

8. The electrically controlled multiple valve according to claim 7, characterized in that the first drive member (32) comprises a first electromagnet (321) and a second electromagnet (322) respectively located at both ends of the first valve stem (31), and the first electromagnet (321) and the second electromagnet (322) are capable of generating a pushing force or a pulling force on the first valve stem (31) by means of an electric current.

9. The electric control multiway valve according to claim 1, wherein the valve body (1) further has a fourth oil inlet and outlet (A3) and a fifth oil inlet and outlet (B3) which are communicated with two ends of the accessory oil cylinder, a fourth oil return path (161) is provided between the oil return port (T) and the fourth oil inlet and outlet (A3), a fifth oil return path (162) is provided between the oil return port (T) and the fifth oil inlet and outlet (B3), a fourth oil inlet path (171) is provided between the oil inlet (P) and the fourth oil inlet and outlet (A3), and a fifth oil inlet path (172) is provided between the oil inlet (P) and the fifth oil inlet and outlet (B3);

the accessory control assembly (4) comprises a fourth oil return path (161), a fifth oil return path (162), a fourth oil inlet path (171), a second valve rod (41) on the fifth oil inlet path (172) and a second driving piece (42) arranged on the valve body (1), wherein the second driving piece (42) is electrically connected with the controller, and the controller can control the second driving piece (42) to drive the second valve rod (41) to slide in a reciprocating mode.

10. The electrically controlled multiple-way valve according to claim 9, characterized in that the second drive member (42) comprises a third electromagnet (421) and a fourth electromagnet (422) respectively located at both ends of the second valve rod (41), and the third electromagnet (421) and the fourth electromagnet (422) are capable of generating a pushing force or a pulling force on the second valve rod (41) by means of an electric current.