Suspension control valve group

Abstract

The application discloses a kind of suspension control valve groups, including valve block and be equipped on filter, annunciator, overflow valve, stop valve and four groups of control units of valve block, valve block is equipped with oil inlet, oil return, pressure measuring connector and four working oil ports, each control unit includes electromagnetic reversing valve, rising speed regulating valve and falling speed regulating valve, by adjusting overflow valve control suspension system inside the adjustment of maximum pressure, and can be detected by pressure measuring connector, by the opening degree control of rising speed regulating valve realizes the control of oil inlet speed, by the opening degree control of falling speed regulating valve realizes the control of oil return speed, can be closed by stop valve Realize the oil circuit locking of working oil port and oil return, valve group pressure protection function can keep stable, with the advantage of quick replacement of fault piece, overall structure is simple, easy to install, simplify connection pipeline, reduce the occupation of valve group to vehicle body space, strong applicability, and integrated structure is convenient to improve the operation reliability between each control unit.

Description

Technical Field

[0001] This application relates to the field of automotive suspension technology, and in particular to a suspension control valve assembly. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this disclosure. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this disclosure.

[0003] With the development of the automotive industry, the application of hydropneumatic suspension in heavy and super-heavy off-road vehicles is becoming more and more widespread. Hydropneumatic suspension requires a unit with height adjustment function to adjust the vehicle posture. When not adjusting the height, the hydropneumatic suspension should have a good vehicle posture holding function. At the same time, in order to improve the reliability of the hydropneumatic suspension, the system should have pressure overload protection and foreign object protection functions.

[0004] Currently, there are two methods for adjusting the height and maintaining the vehicle's body position using the hydropneumatic suspension of various vehicle chassis. One method uses a directional control valve and a speed control valve to adjust the vehicle's posture, while using a hydraulic lock (hydraulic check valve or balance valve) to maintain the posture. The other method uses a directional control valve and a speed control valve to adjust the vehicle's posture, while using a manual ball valve to maintain the posture. However, the currently used directional control valves and speed control valves have shortcomings such as low integration, large structure, and relatively large leakage. The hydraulic locks also have shortcomings such as large structure and relatively large leakage. The relief valves and filters used for pressure and foreign object protection are generally scattered, resulting in a large structure and complex connections. Summary of the Invention

[0005] In view of the deficiencies in the prior art, this application provides a suspension control valve group to solve the problems of large structure and complex connection of the suspension control system in the prior art.

[0006] The above-mentioned objectives of the present invention are mainly achieved through the following technical solutions:

[0007] A suspension control valve assembly includes a valve block and a filter, a transmitter, a relief valve, a shut-off valve, and four control units disposed on the valve block, wherein:

[0008] The valve block is equipped with an oil inlet, an oil return port, a pressure testing connector, and four working oil ports.

[0009] Each control unit includes an electromagnetic reversing valve, an upward speed regulating valve, and a downward speed regulating valve. The filter and the transmitter are respectively connected and disposed between the oil inlet and the first oil port of the upward speed regulating valve. The downward speed regulating valve is connected and disposed between the second oil port of the electromagnetic reversing valve and the return oil port. The first oil port of the electromagnetic reversing valve is connected to the second oil port of the upward speed regulating valve. The third oil port of the electromagnetic reversing valve is correspondingly connected to the working oil port.

[0010] The first oil port of the overflow valve is connected to the pressure test connector and the first oil port of the rising speed regulating valve, respectively; the second oil port of the overflow valve is connected to the return oil port.

[0011] The shut-off valve is connected between the oil return port and the speed control valve.

[0012] Furthermore, the valve block is also provided with an emergency oil port, which is connected to the filter and the transmitter respectively.

[0013] Furthermore, a first check valve is provided between the emergency oil port and the filter and the transmitter, and the first check valve is used to restrict the flow of oil toward the emergency oil port.

[0014] Furthermore, the valve block is also provided with a bypass valve, which is connected between the oil inlet and the first oil port of the rising speed regulating valve.

[0015] Furthermore, the valve block is also provided with a second check valve, which is connected between the filter and the first oil port of the rising speed regulating valve.

[0016] Furthermore, the first one-way valve, the transmitter, the speed control valve, the solenoid directional valve, the overflow valve, and the shut-off valve are disposed on the first plane of the valve block.

[0017] Furthermore, the oil inlet, the pressure testing connector, the second check valve, the speed control valve, and the working oil port are disposed on the second plane of the valve block.

[0018] Furthermore, the return oil port is located on the third plane of the valve block, and the emergency oil port is located on the fourth plane of the valve block.

[0019] Furthermore, the filter and the bypass valve are disposed on the fifth plane of the valve block.

[0020] Furthermore, a fixing mounting hole is provided on the sixth plane of the valve block.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] This invention incorporates a filter, transmitter, relief valve, shut-off valve, and four control units on a valve block. The valve block has an oil inlet, oil return port, pressure test connector, and four working ports. Each control unit includes a solenoid directional valve, an upward speed control valve, and a downward speed control valve. The maximum pressure within the suspension system is adjusted by regulating the relief valve, and the pressure can be detected via the pressure test connector. When the solenoid directional valve is de-energized, oil enters through the inlet, passes through the filter, the upward speed control valve, and the solenoid directional valve, and then flows out through the working ports. The oil inlet speed is controlled by adjusting the opening of the upward speed control valve. When the solenoid directional valve is energized, the oil at the working ports flows out as a return oil after passing through the solenoid directional valve, the downward speed control valve, and the shut-off valve. The return oil speed is controlled by adjusting the opening of the lowering speed control valve. When the solenoid directional valve malfunctions and causes oil to flow out of the working port, the oil circuit between the working port and the return port can be locked by closing the shut-off valve. The oil circuit between the overflow valve and the return port remains connected, and the valve group pressure protection function can remain stable. When the solenoid directional valve, the raising speed control valve, the lowering speed control valve, the overflow valve, the check valve, the filter, the transmitter, the shut-off valve, and the pressure test connector are damaged, the faulty parts can be quickly replaced. The overall structure is simple, easy to install, simplifies the connection pipeline, reduces the valve group's encroachment on the vehicle body space, has strong applicability, and the integrated structure facilitates the improvement of the operational reliability between various control units. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the suspension control valve assembly provided in an embodiment of this application;

[0025] Figure 2 A schematic diagram of the first plane of the valve block provided in an embodiment of this application;

[0026] Figure 3 A schematic diagram of the second plane of the valve block provided in an embodiment of this application;

[0027] Figure 4 A schematic diagram of the third plane of the valve block provided in an embodiment of this application;

[0028] Figure 5 A schematic diagram of the fourth plane of the valve block provided in an embodiment of this application;

[0029] Figure 6 A schematic diagram of the fifth plane of the valve block provided in an embodiment of this application;

[0030] Figure 7 A schematic diagram of the sixth plane of the valve block provided in an embodiment of this application;

[0031] In the diagram: 1. Valve block; 21. Filter; 22. Indicator; 23. Relief valve; 24. Shut-off valve; 31. Oil inlet; 32. Oil return port; 33. Pressure test connector; 34. Working oil port; 35. Emergency oil port; 41. Solenoid directional valve; 42. Upward speed control valve; 43. Downward speed control valve; 51. First check valve; 52. Bypass valve; 53. Second check valve; 54. Mounting hole. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are merely for describing exemplary embodiments of the invention. However, the invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0033] like Figure 1 As shown, a suspension control valve assembly includes a valve block 1 and a filter 21, a transmitter 22, an overflow valve 23, a shut-off valve 24, and four control units disposed on the valve block 1, wherein:

[0034] The valve block 1 is provided with an oil inlet 31, an oil return port 32, a pressure test connector 33, and four working oil ports 34. The oil inlet 31 is used to introduce working oil and can be connected to an oil storage tank through a pipeline. The oil return port 32 is used to discharge oil from the valve body and can also be connected to an oil storage tank through a pipeline, thereby improving the efficiency of oil use and the economy of recycling. There are four working oil ports 34, which is the same as the number of orifice units. Two actuators can also be added to the working oil ports 34 to accommodate different vehicle specifications. The number of working oil ports 34 can be increased or decreased to adapt to the number of control units.

[0035] Each control unit includes an electromagnetic reversing valve 41, an upward speed regulating valve 42, and a downward speed regulating valve 43. The filter 21 and the transmitter 22 are respectively connected and disposed between the oil inlet 31 and the first oil port of the upward speed regulating valve 42. The downward speed regulating valve 43 is connected and disposed between the second oil port of the electromagnetic reversing valve 41 and the return oil port 32. The first oil port of the electromagnetic reversing valve 41 is connected to the second oil port of the upward speed regulating valve 42. The third oil port of the electromagnetic reversing valve 41 is correspondingly connected to the working oil port 34.

[0036] The first oil port of the overflow valve 23 is connected to the pressure test connector 33 and the first oil port of the rising speed regulating valve 42, respectively, and the second oil port of the overflow valve 23 is connected to the return oil port 32.

[0037] The shut-off valve 24 is connected between the oil return port 32 and the speed control valve 43.

[0038] It should be noted that oil inlet and outlet ports are provided on filter 21, transmitter 22, solenoid directional valve 41, up-speed regulating valve 42, overflow valve 23 and down-speed regulating valve 43. The first oil port, second oil port or third oil port in the above components are used to distinguish different interfaces, which can more clearly reflect the principle relationship, without further restrictions.

[0039] The speed control valve is based on the throttling principle of the throttling valve, and adds a pressure compensation device to the internal structure of the valve to improve the phenomenon of large pressure loss after throttling, so that the pressure of the fluid after throttling is basically the same as the pressure before throttling, and reduces the heat generation of the fluid.

[0040] It should be noted that connecting pipes are provided between the oil inlet 31 and the filter 21 and the transmitter 22, between the filter 21 and the rising speed control valve 42 and the pressure test connector 33, and between the overflow valve 23 and the return oil port 32 and the falling speed control valve 43. Alternatively, a channel can be directly provided inside the valve block 1 to achieve a more stable and better-sealed connection between components. The filter 21, transmitter 22, rising speed control valve 42, pressure test connector 33, overflow valve 23, falling speed control valve 43 and connecting pipes can be connected by threads to facilitate the disassembly and replacement of corresponding parts. A seal can also be provided at the end of the connecting pipe to further improve the sealing performance at the connection between the two ends of the connecting pipe to adapt to high-pressure oil. This seal can be set as a rubber sealing ring.

[0041] By adjusting and controlling the overflow valve 23, the pressure in the suspension system can be controlled; by adjusting and controlling the speed control valve, the flow rate of the incoming oil and the flow rate of the returning oil can be controlled; by controlling the on and off of the solenoid directional valve 41, the oil inlet and return at the working port 34 can be controlled; by adjusting the shut-off valve 24, the on and off of the oil return can be controlled. The shut-off valve 24 can be a manual shut-off valve to maintain good reliability under different working conditions.

[0042] The working principle of this embodiment is as follows: A filter 21, a transmitter 22, an overflow valve 23, a shut-off valve 24, and four control units are installed on the valve block 1. The valve block 1 has an oil inlet 31, an oil return port 32, a pressure test connector 33, and four working oil ports 34. Each control unit includes a solenoid directional valve 41, an upward speed control valve 42, and a downward speed control valve 43. The maximum pressure within the suspension system is adjusted by regulating the overflow valve 23, and can be detected by the pressure test connector 33. When the solenoid directional valve 41 is de-energized, oil enters from the oil inlet 31, passes through the filter 21, the upward speed control valve 42, and the solenoid directional valve 41, and then flows out from the working oil port 34. The oil inlet speed is controlled by the opening degree of the upward speed control valve 42. When the solenoid directional valve 41 is energized, the oil at the working oil port 34 passes through the solenoid directional valve 41, the downward speed control valve 42, and the filter 21, the upward speed control valve 42, and the shut-off valve 43. Oil flows out through return port 32 after valve 43 and shut-off valve 24. The return oil speed is controlled by the opening of the lowering speed control valve 43. When the solenoid directional valve 41 malfunctions and causes oil to flow out of the working port 34 from the directional valve, the oil circuit between the working port 34 and the return port 32 can be locked by closing the shut-off valve 24. The oil circuit between the overflow valve 23 and the return port 32 remains connected. The valve group pressure protection function can remain stable. When the solenoid directional valve 41, the rising speed control valve 42, the falling speed control valve 43, the overflow valve 23, the check valve, the filter 21, the transmitter 22, the shut-off valve 24 and the pressure test connector 33 are damaged, the faulty parts can be quickly replaced. The overall structure is simple, easy to install, simplifies the connection pipeline, reduces the valve group's encroachment on the vehicle body space, has strong applicability, and the integrated structure facilitates the improvement of the operational reliability between various control units.

[0043] Furthermore, based on the above embodiments, the valve block 1 is also provided with an emergency oil port 35. The emergency oil port 35 is connected to the filter 21 and the transmitter 22 respectively. When the oil inlet 31 cannot supply oil normally, the oil supply system outside the valve block 1 can be connected to the emergency oil port 35 to improve reliability.

[0044] Furthermore, based on the above embodiments, a first one-way valve 51 is provided between the emergency oil port 35 and the filter 21 and the transmitter 22, and the first one-way valve 51 is used to restrict the flow of oil toward the emergency oil port 35, so that the direction of oil delivery is more controllable during emergency rescue operations.

[0045] Furthermore, based on the above embodiments, the valve block 1 is also provided with a bypass valve 52, which is connected between the oil inlet 31 and the first oil port of the rising speed regulating valve 42.

[0046] Since filter 21 filters the oil entering the inlet 31, impurities in the oil accumulate at filter 21. If filter 21 becomes clogged, the pressure difference in the working chamber inside transmitter 22 gradually increases, and the alarm device inside transmitter 22 issues an alarm. As the clogging of filter 21 worsens, oil can be supplied normally through bypass valve 52 to maintain normal system operation. Filter 21 can be cleared when bypass valve 52 is open.

[0047] Furthermore, based on the above embodiment, the valve block 1 is also provided with a second one-way valve 53. The second one-way valve 53 is connected between the filter 21 and the first oil port of the rising speed regulating valve 42. Under the action of the second one-way valve 53, the oil at the working oil port 34 cannot flow out in reverse through the rising speed regulating valve 42, thus maintaining the stable pressure required for operation and improving the stability of operation.

[0048] like Figure 2 As shown, further, based on the above embodiment, the first check valve 51, the transmitter 22, the rising speed control valve 42, the solenoid directional valve 41, the overflow valve 23, and the shut-off valve 24 are disposed on the first plane of the valve block 1. After the valve block 1 is stably disposed, the operator can control the operation of the first check valve 51, the transmitter 22, the rising speed control valve 42, the solenoid directional valve 41, the overflow valve 23, and the shut-off valve 24 from one side of the first plane of the valve block 1, thereby improving the convenience of real-time control and integrating the components with the highest operating frequency on the same plane, thereby improving the flexibility of the valve body installation position.

[0049] like Figure 3 As shown, further, based on the above embodiment, the oil inlet 31, the pressure testing connector 33, the second check valve 53, the down-regulating valve 43, and the working oil port 34 are disposed on the second plane of the valve block 1. After the valve block 1 is stably disposed, compared with the first check valve 51, transmitter 22, up-regulating valve 42, solenoid directional valve 41, overflow valve 23, and shut-off valve 24 with high operating frequency on the first plane of the valve block 1, the oil inlet 31, pressure testing connector 33, second check valve 53, down-regulating valve 43, and working oil port 34 with lower operating frequency are disposed on the second plane of the valve block 1. This also makes it easier for operators to work on this side of the valve block 1, improves the convenience of real-time control, and increases the flexibility of valve body installation position.

[0050] like Figure 4-5As shown, further, based on the above embodiment, the return port 32 is disposed on the third plane of the valve block 1, and the emergency port 35 is disposed on the fourth plane of the valve block 1. This facilitates the reasonable arrangement of the return port 32, the inlet port 31, and the emergency port 35 by cooperating with the oil conveying device, thereby improving the efficiency of connection operation and avoiding interference from the extension of the oil conveying pipeline.

[0051] like Figure 6 As shown, further, based on the above embodiment, the filter 21 and the bypass valve 52 are disposed on the fifth plane of the valve block 1 so that when the filter 21 is blocked, the bypass valve 52 on the same plane can be opened to maintain the normal oil supply state of the system.

[0052] like Figure 7 As shown, further, based on the above embodiment, the valve block 1 is provided with a fixed mounting hole 54 on the sixth plane, so that the sixth plane can be used as the mounting surface and the fixed mounting hole 54 can be used as the mounting position. Then, the valve block 1 can be installed into the fixed mounting hole 54 by bolts or other connecting rods, so as to maintain the stability and convenient disassembly and assembly of the valve block 1.

[0053] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0054] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0055] It should be understood that in the description of this invention, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship as commonly placed when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0058] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0059] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0060] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A suspension control valve assembly, characterized in that, It includes a valve block and a filter, transmitter, relief valve, shut-off valve, and four control units mounted on the valve block, wherein: The valve block is equipped with an oil inlet, an oil return port, a pressure testing connector, and four working oil ports. Each control unit includes an electromagnetic reversing valve, an upward speed regulating valve, and a downward speed regulating valve. The filter and the transmitter are respectively connected and disposed between the oil inlet and the first oil port of the upward speed regulating valve. The downward speed regulating valve is connected and disposed between the second oil port of the electromagnetic reversing valve and the return oil port. The first oil port of the electromagnetic reversing valve is connected to the second oil port of the upward speed regulating valve. The third oil port of the electromagnetic reversing valve is correspondingly connected to the working oil port. The first oil port of the overflow valve is connected to the pressure test connector and the first oil port of the rising speed regulating valve, respectively; the second oil port of the overflow valve is connected to the return oil port. The shut-off valve is connected between the oil return port and the speed control valve. The valve block is also provided with a second check valve, which is connected between the filter and the first oil port of the rising speed regulating valve; when the electromagnetic reversing valve is not energized, the first oil port and the third oil port of the electromagnetic reversing valve are connected.

2. The suspension control valve assembly as described in claim 1, characterized in that: The valve block is also provided with an emergency oil port, which is connected to the filter and the transmitter respectively.

3. The suspension control valve assembly as described in claim 2, characterized in that: A first check valve is provided between the emergency oil port and the filter and the transmitter, and the first check valve is used to restrict the flow of oil toward the emergency oil port.

4. The suspension control valve assembly as described in claim 3, characterized in that: The valve block is also provided with a bypass valve, which is connected between the oil inlet and the first oil port of the rising speed regulating valve.

5. The suspension control valve assembly as described in claim 4, characterized in that: The first one-way valve, the transmitter, the speed control valve, the solenoid directional valve, the overflow valve, and the shut-off valve are disposed on the first plane of the valve block.

6. The suspension control valve assembly as described in claim 5, characterized in that: The oil inlet, the pressure testing connector, the second one-way valve, the speed control valve, and the working oil port are disposed on the second plane of the valve block.

7. The suspension control valve assembly as described in claim 6, characterized in that: The return port is located on the third plane of the valve block, and the emergency port is located on the fourth plane of the valve block.

8. The suspension control valve assembly as described in claim 7, characterized in that: The filter and the bypass valve are disposed on the fifth plane of the valve block.

9. The suspension control valve assembly as described in claim 8, characterized in that: The valve block has a fixed mounting hole on its sixth plane.

Images