High-frequency proportional valve of hydraulic retarder

Abstract

The invention relates to the field of hydraulic retarders, in particular to a hydraulic retarder high-frequency proportional valve which comprises a valve seat, a protective cover is mounted above the valve seat, an ECU control connector is mounted on one side of the protective cover, a sealing ring is attached between the protective cover and the valve seat, and a heat insulation pad is mounted at the bottom of the valve seat. Through high-frequency cooperation of one group of static iron core and the movable iron core, gas can flow into the gas outlet from the gas inlet, and when the gas pressure is large, through high-frequency cooperation of the other group of static iron core and the movable iron core, part of the gas can be discharged in a one-way mode along a one-way valve cavity while the gas can be discharged along the gas outlet; the control mode that high-frequency control of the two sets of static iron cores and the movable iron core is matched with detection of the pressure sensor is adopted, the whole structure is simple, meanwhile, the valve seat has the advantages of being rapid and sensitive in adjustment reaction and low in noise, and it can be guaranteed that the working condition temperature in the valve seat is stable by being matched with a heat insulation pad at the bottom.

Description

Technical Field

[0001] The invention relates to the field of hydraulic retarders, and in particular to a high-frequency proportional valve for hydraulic retarders. Background Art

[0002] A hydraulic retarder is a vehicle retarder that reduces the vehicle's speed through a hydraulic device. It is mainly used for braking a vehicle when going down a long slope. The oil is pressed into the working chamber between the stator and rotor. The moving rotor accelerates the oil and acts on the stator. The stator forces the oil to produce a reaction force on the rotor, thereby generating a braking torque. During the use of the hydraulic retarder, the opening of the proportional valve needs to be controlled according to the controller's gear position.

[0003] The Chinese invention patent application with announcement number CN205113309U, a control system for a proportional valve on a hydraulic retarder, includes a controller; a pressure sensor, which is electrically connected to the input end of the controller and installed in the intake channel of the hydraulic retarder for detecting the gas pressure in the intake channel; a flow sensor, which is electrically connected to the input end of the controller and installed in the intake channel of the hydraulic retarder for detecting the gas flow in the intake channel; a proportional valve, which is electrically connected to the output end of the controller and installed on the intake port of the hydraulic retarder for adjusting the intake amount of the hydraulic retarder. The utility model enables the intake amount of the hydraulic retarder to be accurately controlled.

[0004] During use, the existing proportional valve can only control the intake ratio alone, and is unable to accurately control the opening of the intake valve according to the intake conditions, thereby achieving precise intake control, and making high-frequency changes to the intake ratio according to real-time intake needs, thereby achieving accuracy in intake control.

[0005] Therefore, it is necessary to invent a high-frequency proportional valve for a hydraulic retarder to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a high-frequency proportional valve for a hydraulic retarder, which can ensure the stability of the air pressure of the intake and outlet air through the control method of double static iron cores and moving iron cores, and the air pressure monitoring of the pressure sensor can ensure that the opening and closing amplitude of the moving iron core is accurately controlled, so as to solve the problem in the prior art that the intake ratio of the proportional valve cannot be accurately controlled during the intake process.

[0007] In order to achieve the above object, the present invention provides the following technical solutions: a high-frequency proportional valve of a hydraulic retarder, comprising a valve seat, a protective cover is installed above the valve seat, an ECU control connector is installed on one side of the protective cover, a sealing ring is attached between the protective cover and the valve seat, and a heat insulation pad is installed at the bottom of the valve seat;

[0008] A circulation component is arranged in the valve seat and is used to allow gas to circulate in the valve seat;

[0009] The control component is arranged in the valve seat and is used for the air gas to circulate in the circulation component.

[0010] As a preferred solution of the present invention, the circulation component includes an air inlet, which is opened on one side of the valve seat, and an air outlet is opened on one side of the valve seat, and the air outlet and the air inlet are on the same side, and connecting nuts are installed in the air outlet and the air inlet.

[0011] As a preferred solution of the present invention, a pressure relief port is provided on one side of the valve seat, a control chamber 1 is provided above the valve seat, and the control chamber 1 is connected to the pressure relief port through-hole 6 is provided between the air inlet and the control chamber 1.

[0012] As a preferred solution of the present invention, a control chamber 2 is provided above the valve seat, a connecting hole 1 is provided between the control chamber 2 and the pressure relief port, and the connecting hole 1 is connected to the air outlet, and a connecting hole 2 is provided between the connecting hole 1 and the control chamber 2.

[0013] As a preferred solution of the present invention, a one-way valve cavity is provided on the side of the valve seat, and a one-way valve core is installed in the one-way valve cavity, and a connecting hole three is provided between the one-way valve cavity and the second control cavity.

[0014] As a preferred solution of the present invention, a pressure chamber is provided above the valve seat, a pressure sensor is installed in the pressure chamber, a connecting hole four is provided between the pressure chamber and the air outlet, a connecting hole five is provided on the inner wall of the one-way valve chamber, a connecting port is provided at the bottom of the valve seat, a plug is installed in the connecting port, and the connecting port is through-connected with the connecting hole five.

[0015] As a preferred solution of the present invention, the control component includes a shell, which is installed above the valve seat and located in the protective cover. A control board is installed on one side of the shell, and the control board is linearly connected to the ECU control connector, and the pressure sensor is linearly connected to the control board.

[0016] As a preferred solution of the present invention, two groups of static iron cores are installed in the housing, and moving iron cores are installed below the two groups of static iron cores, and the control board is linearly connected to the two groups of static iron cores and the moving iron core.

[0017] As a preferred solution of the present invention, the two groups of static iron cores are respectively connected to the inside of control chamber one and control chamber two, sealing rings are installed at the connections between the static iron cores and control chamber one and control chamber two, and one group of moving iron cores is fitted at the connection between control chamber one and the pressure relief port, and the other group of moving iron cores is fitted at the connection between connecting hole three and control chamber two.

[0018] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0019] Through the high-frequency coordination of a group of static iron cores and moving iron cores, the gas can flow from the air inlet into the air outlet. When the air pressure is high, the high-frequency coordination of another group of static iron cores and moving iron cores can be used to allow the gas to be discharged through the air outlet. At the same time, part of the gas will be discharged in one direction through the one-way valve cavity, thereby achieving the effect of internal air pressure regulation. The high-frequency control of the two groups of static iron cores and moving iron cores and the control method of pressure sensor detection have a relatively simple overall structure, and also have the characteristics of fast and sensitive adjustment response and low noise. In combination with the thermal insulation pad at the bottom, the internal operating temperature of the valve seat can be kept stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the layout structure above the valve seat of the present invention;

[0024] Figure 4 It is a schematic diagram of the valve seat planing structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the matching structure of the moving iron core and the second control cavity of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the valve seat of the present invention;

[0027] Figure 7 It is a schematic diagram of the planed top view of the valve seat of the present invention;

[0028] Figure 8 It is a schematic diagram of the bottom structure of the valve seat of the present invention.

[0029] Description of reference numerals:

[0030] 001, valve seat; 101, protective cover; 102, ECU control connector; 103, sealing ring; 104, thermal insulation pad; 002, circulation component; 201, air inlet; 202, air outlet; 203, pressure relief port; 204, control chamber one; 205, connecting hole one; 206, control chamber two; 207, connecting hole two; 208, connecting hole three; 209, one-way valve chamber; 210, pressure chamber; 211, connecting hole four; 212, connecting hole five; 213, connecting port; 214, plug; 215, one-way valve core; 216, connecting nut; 217, connecting hole six; 003, control component; 301, housing; 302, control board; 303, static iron core; 304, moving iron core; 305, sealing ring; 306, pressure sensor. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] The present invention provides Figure 1-8 A hydraulic retarder high-frequency proportional valve shown includes a valve seat 001, a protective cover 101 is installed above the valve seat 001, an ECU control connector 102 is installed on one side of the protective cover 101, a sealing ring 103 is attached between the protective cover 101 and the valve seat 001, and a heat insulation pad 104 is installed at the bottom of the valve seat 001;

[0033] The heat insulation pad 104 can avoid the temperature transfer between the valve seat 001 and the hydraulic retarder, so that the temperature of the valve seat 001 is increased, and the ECU control connector 102 is connected to the control center of the vehicle.

[0034] The circulation component 002 is disposed in the valve seat 001 and is used to allow the gas to circulate in the valve seat 001;

[0035] The control component 003 is disposed in the valve seat 001 and is used for the air gas to circulate in the circulation component 002 .

[0036] Furthermore, in the above structure, the circulation component 002 includes an air inlet 201, which is opened on one side of the valve seat 001, and an air outlet 202 is opened on one side of the valve seat 001, and the air outlet 202 and the air inlet 201 are on the same side, and a connecting nut 216 is installed in the air outlet 202 and the air inlet 201.

[0037] Through nuts 216 in the air inlet 201 and the air outlet 202 , pipes can be used to connect the two to the hydraulic retarder.

[0038] Furthermore, in the above structure, a pressure relief port 203 is provided on one side of the valve seat 001, a control chamber 204 is provided above the valve seat 001, and the control chamber 204 is connected to the pressure relief port 203, and a connecting hole 6 217 is provided between the air inlet 201 and the control chamber 204.

[0039] Through the connection hole six 217, the gas from the air inlet 201 can enter the control chamber one 204, and the gas can enter the pressure relief port 203 along the control chamber one 204.

[0040] Furthermore, in the above structure, a control chamber 206 is provided above the valve seat 001 , a connecting hole 205 is provided between the control chamber 206 and the pressure relief port 203 , and the connecting hole 205 is connected to the air outlet 202 , and a connecting hole 207 is provided between the connecting hole 205 and the control chamber 206 .

[0041] The gas in the pressure relief port 203 can enter the gas outlet 202 through the connecting hole 1 205 , and at the same time, the gas can enter the control chamber 2 206 through the connecting hole 207 .

[0042] Furthermore, in the above structure, a one-way valve cavity 209 is provided on the side of the valve seat 001 , and a one-way valve core 215 is installed in the one-way valve cavity 209 , and a connecting hole three 208 is provided between the one-way valve cavity 209 and the control cavity two 206 .

[0043] Through the connecting hole three 208 , the gas can enter the one-way valve chamber 209 from the inside of the control chamber two 206 , and through the one-way valve core 215 , the gas in the one-way valve chamber 209 can be discharged in one direction.

[0044] Furthermore, in the above structure, a pressure chamber 210 is provided above the valve seat 001, a pressure sensor 306 is installed in the pressure chamber 210, a connecting hole 4 211 is provided between the pressure chamber 210 and the air outlet 202, a connecting hole 5 212 is provided on the inner wall of the one-way valve chamber 209, a connecting port 213 is provided at the bottom of the valve seat 001, a plug 214 is installed in the connecting port 213, and the connecting port 213 is through-connected with the connecting hole 5 212.

[0045] The gas in the gas outlet 202 can enter the pressure chamber 210 while being discharged through the connecting hole 211, so that the pressure sensor 306 can monitor the pressure of the discharged gas.

[0046] Furthermore, in the above structure, the control component 003 includes a shell 301, which is installed above the valve seat 001 and located in the protective cover 101. A control board 302 is installed on one side of the shell 301, and the control board 302 is linearly connected to the ECU control connector 102, and the pressure sensor 306 is linearly connected to the control board 302.

[0047] The data of the pressure sensor 306 can be monitored through the control board 302 , and the data can be transmitted to the control terminal of the vehicle through the ECU control connector 102 .

[0048] Furthermore, in the above structure, two groups of static iron cores 303 are installed in the housing 301 , a moving iron core 304 is installed below the two groups of static iron cores 303 , and the control board 302 is linearly connected to the two groups of static iron cores 303 and the moving iron core 304 .

[0049] The static iron core 303 can be controlled by the control board 302, so that the static iron core 303 pushes the moving iron core 304 to move up and down at a high frequency.

[0050] Furthermore, in the above structure, two groups of static iron cores 303 are respectively connected through the inside of control chamber 1 204 and control chamber 2 206, and sealing rings 305 are installed at the connection between the static iron core 303 and the control chamber 1 204 and the control chamber 2 206, and one group of moving iron cores 304 fits with the connection between the control chamber 1 204 and the pressure relief port 203, and the other group of moving iron cores 304 fits with the connection between the connecting hole 3 208 and the control chamber 2 206.

[0051] The connection between the control chamber 1 204 and the pressure relief port 203 can be cut off by the moving iron core 304, so that the gas from the air inlet 201 stops entering. At the same time, the connection hole 3 208 and the control chamber 2 206 can be cut off by another set of moving iron cores 304, so that the air can only be discharged through the air outlet 202. When the air pressure changes, the moving iron core 304 here can be opened to discharge the air pressure through the one-way valve chamber 209, and the opening amplitude of the moving iron core 304 here and the moving iron core 304 at the air inlet 201 can be used to control the ratio of incoming and outgoing air, thereby achieving precise control of the gas.

[0052] like Figure 1-8As shown, through the air inlet 201, the air enters the control chamber 1 204 through the connection hole 6 217. At this time, the static iron core 303 here drives the moving iron core 304 to open, so that the gas in the control chamber 1 204 will enter the connection hole 1 205 and the pressure relief port 203, and part of it will be discharged through the pressure relief port 203, so as to keep the intake air pressure stable. When the gas enters the air outlet 202 through the connection hole 1 205, the gas intake control is completed, and when the air pressure changes, the pressure will be detected by the pressure sensor. 306 detects that, at the same time, the static iron core 303 in the control chamber 206 drives the moving iron core 304 to open, so that part of the gas in the connecting hole 1 205 will enter the control chamber 206 along the connecting hole 207, and at the same time enter the one-way valve chamber 209 along the connecting hole 3 208, so that the one-way valve core 215 can discharge the gas in one direction, and in this process, the opening amplitude of the two sets of moving iron cores 304 is accurately and frequently controlled, so that the air pressure is maintained at an optimal state, ensuring the optimal working condition of the hydraulic retarder.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-frequency proportional valve for a hydraulic retarder, comprising a valve seat (001), characterized in that: A protective cover (101) is installed above the valve seat (001), an ECU control connector (102) is installed on one side of the protective cover (101), a sealing ring (103) is attached between the protective cover (101) and the valve seat (001), and a heat insulation pad (104) is installed at the bottom of the valve seat (001); A circulation component (002) is disposed in the valve seat (001) and is used to allow gas to circulate in the valve seat (001); The control component (003) is arranged in the valve seat (001) and is used for the air gas to circulate in the circulation component (002).

2. A hydraulic retarder high-frequency proportional valve according to claim 1, characterized in that: The circulation component (002) comprises an air inlet (201), wherein the air inlet (201) is provided on one side of the valve seat (001), an air outlet (202) is provided on one side of the valve seat (001), and the air outlet (202) and the air inlet (201) are located on the same side, and connecting nuts (216) are installed in the air outlet (202) and the air inlet (201).

3. A hydraulic retarder high frequency proportional valve according to claim 2, characterized in that: A pressure relief port (203) is provided on one side of the valve seat (001), a control chamber one (204) is provided above the valve seat (001), and the control chamber one (204) is connected to the pressure relief port (203), and a connection hole six (217) is provided between the air inlet (201) and the control chamber one (204).

4. A hydraulic retarder high frequency proportional valve according to claim 3, characterized in that: A second control chamber (206) is provided above the valve seat (001), a first connection hole (205) is provided between the second control chamber (206) and the pressure relief port (203), and the first connection hole (205) is connected to the air outlet (202), and a second connection hole (207) is provided between the first connection hole (205) and the second control chamber (206).

5. A hydraulic retarder high frequency proportional valve according to claim 4, characterized in that: A one-way valve cavity (209) is provided on the side of the valve seat (001), and a one-way valve core (215) is installed in the one-way valve cavity (209). A connecting hole three (208) is provided between the one-way valve cavity (209) and the second control cavity (206).

6. A hydraulic retarder high frequency proportional valve according to claim 5, characterized in that: A pressure chamber (210) is provided above the valve seat (001), a pressure sensor (306) is installed in the pressure chamber (210), a connecting hole four (211) is provided between the pressure chamber (210) and the air outlet (202), a connecting hole five (212) is provided on the inner wall of the one-way valve chamber (209), a connecting port (213) is provided at the bottom of the valve seat (001), a plug (214) is installed in the connecting port (213), and the connecting port (213) is connected to the connecting hole five (212).

7. A hydraulic retarder high frequency proportional valve according to claim 1, characterized in that: The control component (003) comprises a housing (301), wherein the housing (301) is installed above the valve seat (001) and is located in the protective cover (101), a control board (302) is installed on one side of the housing (301), the control board (302) is linearly connected to the ECU control connector (102), and the pressure sensor (306) is linearly connected to the control board (302).

8. A hydraulic retarder high frequency proportional valve according to claim 7, characterized in that: Two groups of static iron cores (303) are installed in the housing (301), and moving iron cores (304) are installed below the two groups of static iron cores (303), and the control board (302) is linearly connected to the two groups of static iron cores (303) and the moving iron core (304).

9. A hydraulic retarder high-frequency proportional valve according to claim 8, characterized in that: The two groups of static iron cores (303) are respectively connected to the inside of control chamber one (204) and control chamber two (206), and sealing rings (305) are installed at the connection between the static iron core (303) and control chamber one (204) and control chamber two (206), and one group of moving iron cores (304) fits at the connection between control chamber one (204) and pressure relief port (203), and the other group of moving iron cores (304) fits at the connection between connection hole three (208) and control chamber two (206).

Images