Aluminum alloy valve block integrated with filtering and speed regulating functions

Abstract

This invention provides an aluminum alloy valve block with integrated filtration and speed regulation functions. The valve block includes a main body, a return solenoid valve, a front axle solenoid valve assembly, a rear axle solenoid valve assembly, a fine filter, a front axle throttle valve, and a rear axle throttle valve. The main body of the valve block has an oil inlet, an oil return port, a front axle oil outlet, and a rear axle oil outlet. The return solenoid valve is embedded in the main body and connected to the oil inlet and return port via pipes. The front axle solenoid valve assembly is embedded in the main body and connected to the oil inlet and the front axle throttle valve via pipes. The front axle throttle valve is connected to the front axle oil outlet. The rear axle solenoid valve assembly is embedded in the main body and connected to the oil inlet and the rear axle throttle valve via pipes. The rear axle throttle valve is connected to the rear axle oil outlet via pipes. The fine filter is detachably installed at the oil inlet. This invention solves the problems of excessively rapid descent speed in vehicle hydropneumatic suspension systems leading to poor comfort and the inability to integrate filtration functions for lightweight design.

Description

Technical Field

[0001] This invention relates to the field of hydraulic technology, and in particular to an aluminum alloy valve block with integrated filtration and speed regulation functions. Background Technology

[0002] Currently, many light off-road vehicles and special equipment vehicles are equipped with hydropneumatic suspension or hydraulic cylinders to achieve height adjustment and suspension spring damping. Generally, the hydraulic cylinder is filled with oil via power take-off from the transmission or an electric pump to achieve height increase, while descent is typically achieved using the vehicle's own weight. In hydropneumatic suspension systems using the same hydraulic circuit during both raising and lowering, a larger oil flow can increase the raising speed but also lead to excessively rapid suspension descent, affecting passenger comfort. Conversely, a lower descent speed can improve smoothness but results in excessively long raising times, impacting vehicle dynamic response. Using different hydraulic circuits for raising and lowering increases the weight of the main valve block and complicates the hydraulic principle, contradicting the design principles of lightweight and simplification.

[0003] Meanwhile, the hydraulic suspension system reciprocates during vehicle operation, and prolonged operation leads to hydraulic oil emulsification and increased impurities. The system needs to filter these impurities, and integrating the filter into the main valve block has become an important direction for subsequent lightweight design.

[0004] Therefore, how to efficiently integrate and lightweight design the main valve block based on a single oil circuit to improve the lifting and lowering smoothness of vehicles with hydropneumatic suspension systems has become an urgent problem to be solved. Summary of the Invention

[0005] In view of this, it is necessary to provide an aluminum alloy valve block with integrated filtration and speed regulation functions to solve the problems of poor comfort caused by excessively fast descent speed of vehicle hydropneumatic suspension systems and the inability to integrate filtration functions into the design to achieve lightweighting.

[0006] This invention provides an aluminum alloy valve block with integrated filtration speed regulation function, comprising: an aluminum alloy valve block with integrated filtration speed regulation function, comprising:

[0007] The system comprises a valve block body, a return solenoid valve, a front axle solenoid valve assembly, a rear axle solenoid valve assembly, a fine filter, a front axle throttle valve, and a rear axle throttle valve. The valve block body has an oil inlet, an oil return port, a front axle oil outlet, and a rear axle oil outlet. The return solenoid valve is embedded in the valve block body and connected to the oil inlet and the oil return port via pipes. The front axle solenoid valve assembly is embedded in the valve block body and connected to the oil inlet and the front axle throttle valve via pipes. The front axle throttle valve is connected to the front axle oil outlet. The rear axle solenoid valve assembly is embedded in the valve block body and connected to the oil inlet and the rear axle throttle valve via pipes. The rear axle throttle valve is connected to the rear axle oil outlet via pipes. The fine filter is detachably installed at the oil inlet and is used to filter the hydraulic oil entering the valve block body.

[0008] Optionally, the front axle solenoid valve assembly includes a front axle main solenoid valve, a front axle left solenoid valve, and a front axle right solenoid valve. The front axle main solenoid valve is connected to the front axle left solenoid valve, the front axle right solenoid valve, and the oil inlet, respectively. The front axle left solenoid valve and the front axle right solenoid valve are connected to the front axle oil outlet.

[0009] Optionally, the front axle oil outlet includes a front axle left oil outlet and a front axle right oil outlet, the front axle left solenoid valve is connected to the front axle left oil outlet, and the front axle right solenoid valve is connected to the front axle right oil outlet.

[0010] Optionally, the front axle main solenoid valve is a two-position three-way solenoid valve.

[0011] Optionally, the rear axle solenoid valve assembly includes a rear axle main solenoid valve, a rear axle left solenoid valve, and a rear axle right solenoid valve. The rear axle main solenoid valve is connected to the rear axle left solenoid valve, the rear axle right solenoid valve, and the oil inlet, respectively. The rear axle left solenoid valve and the rear axle right solenoid valve are connected to the rear axle oil outlet.

[0012] Optionally, the rear axle oil outlet includes a left rear axle oil outlet and a right rear axle oil outlet, the left rear axle solenoid valve is connected to the left rear axle oil outlet, and the right rear axle solenoid valve is connected to the right rear axle oil outlet.

[0013] Optionally, the rear axle main solenoid valve is a two-position three-way solenoid valve.

[0014] Optionally, it also includes an overflow valve, which is connected to the oil inlet and the oil return port and is connected in parallel with the return solenoid valve.

[0015] Optionally, a pressure sensor is also included, which is fixed on the valve block body and connected to the internal pipeline of the valve block body, and is used to detect the pressure of the internal pipeline of the valve block body.

[0016] Optionally, a pressure testing connector is also included, which is fixed on the valve block body and connected to the internal pipeline of the valve block body.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention integrates a front axle solenoid valve group, a rear axle solenoid valve group, and a fine filter on the valve block body. It can filter hydraulic oil, control the front and rear axles independently, and realize differential linkage between the front and rear lifting, improving adjustment efficiency. The filling and discharging processes use the same oil passage, which can realize the efficient application and lightweight design of the valve block assembly. At the same time, the hydraulic oil flow rate during the return oil process is controlled by the front axle throttle valve and the rear axle throttle valve. It ensures that the throttle valve is fully open during the filling process and limits the magnitude of the return oil flow rate by the one-way constant flow rate of the four throttle valves during the discharging process, thereby limiting the speed of the return flow and improving the smoothness of the descent process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the aluminum alloy valve block integrating filtration speed regulation function in this invention;

[0021] Figure 2 This is a schematic diagram of the aluminum alloy valve block with integrated filtration speed regulation function from another angle in this invention.

[0022] Figure 3 This is a schematic diagram of the front axle solenoid valve assembly and the rear axle solenoid valve assembly.

[0023] Wherein: 1-valve block body, 11-oil inlet, 12-oil return port, 13-front axle outlet, 131-front axle left outlet, 132-front axle right outlet, 14-rear axle outlet, 141-rear axle left outlet, 142-rear axle right outlet, 2-return solenoid valve, 3-front axle solenoid valve assembly, 4-rear axle solenoid valve assembly, 5-fine filter, 6-front axle throttle valve, 7-rear axle throttle valve, 8-relief valve, 9-pressure sensor, 10-pressure test connector. Detailed Implementation

[0024] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0025] like Figure 1-3 As shown, an embodiment of the present invention provides an aluminum alloy valve block with integrated filtration and speed regulation functions, comprising: a valve block body 1, a return solenoid valve 2, a front axle solenoid valve assembly 3, a rear axle solenoid valve assembly 4, a fine filter 5, a front axle throttle valve 6, and a rear axle throttle valve 7. The valve block body 1 has an oil inlet 11, an oil return port 12, a front axle oil outlet 13, and a rear axle oil outlet 14. The return solenoid valve 2 is embedded in the valve block body 1 and communicates with the oil inlet 11 and the oil return port 12 through a pipe. The front axle solenoid valve 6... The solenoid valve assembly 3 is embedded in the valve block body 1 and is connected to the oil inlet 11 and the front axle throttle valve 6 through a pipeline. The front axle throttle valve 6 is connected to the front axle oil outlet 13. The rear axle solenoid valve assembly 4 is embedded in the valve block body 1 and is connected to the oil inlet 11 and the rear axle throttle valve 7 through a pipeline. The rear axle throttle valve 7 is connected to the rear axle oil outlet 14 through a pipeline. The fine filter 5 is detachably installed at the oil inlet 11 and is used to filter the hydraulic oil entering the valve block body 1.

[0026] This invention integrates a front axle solenoid valve group 3, a rear axle solenoid valve group 4, and a fine filter 5 on the valve block body 1. It can filter hydraulic oil, control the front and rear axles independently, and realize differential linkage between the front and rear lifting, thereby improving adjustment efficiency. The filling and discharging processes use the same oil passage, which can realize the efficient application and lightweight design of the valve block assembly. At the same time, the hydraulic oil flow rate during the return oil process is controlled by the front axle throttle valve and the rear axle throttle valve. It ensures that the throttle valve is fully open during the filling process and limits the size of the return oil flow rate by the one-way constant flow rate of the four throttle valves during the discharging process, thereby limiting the speed of the return flow and improving the smoothness of the descent process.

[0027] Specifically, the valve block body 1 is rectangular in shape, and the return solenoid valve 2, the front axle solenoid valve group 3, the rear axle solenoid valve group 4, the fine filter 5, the front axle throttle valve 6, and the rear axle throttle valve 7 are distributed on various surfaces of the valve block body 1. Under the premise of avoiding mutual interference, the volume of the valve block can be effectively reduced, which helps to miniaturize the valve block.

[0028] The design of the valve block body 1 needs to consider the material and thickness according to the system working pressure. When the system pressure is no greater than 20MPa, aluminum alloy can be used as the material of the valve block body 1 to achieve the purpose of weight reduction and lightweighting.

[0029] In this embodiment, the valve block body 1 is made of aluminum alloy to achieve the purpose of weight reduction and lightweighting.

[0030] Specifically, the return solenoid valve 2 is a two-position, two-way normally open solenoid valve. As a switching solenoid valve for establishing system pressure, it connects the oil inlet and return lines of the main valve block when not energized, ensuring direct return when the system is not working, thus avoiding the formation of system pressure. When the system needs to work, the solenoid valve is energized to cut off, allowing the oil inlet line to smoothly enter and form pressure to start working.

[0031] Specifically, the front axle solenoid valve assembly 3 includes a front axle main solenoid valve 31, a front axle left solenoid valve 32, and a front axle right solenoid valve 33. The front axle main solenoid valve 31 is a two-position three-way solenoid valve, connected to the front axle left solenoid valve 32, the front axle right solenoid valve 33, and the oil inlet 11. The front axle left solenoid valve 32 and the front axle right solenoid valve 33 are connected to the front axle oil outlet 13. Correspondingly, the front axle oil outlet 13 includes a front axle left outlet 131 and a front axle right outlet 132. The front axle left solenoid valve 32 is connected to the front axle left outlet 131, and the front axle right solenoid valve 33 is connected to the front axle right outlet 132.

[0032] Specifically, the rear axle solenoid valve assembly 4 includes a rear axle main solenoid valve 41, a rear axle left solenoid valve 42, and a rear axle right solenoid valve 43. The rear axle main solenoid valve 41 is a two-position three-way solenoid valve, connected to the rear axle left solenoid valve 42, the rear axle right solenoid valve 43, and the oil inlet 11. The rear axle left solenoid valve 42 and the rear axle right solenoid valve 43 are connected to the rear axle oil outlet 14. Correspondingly, the rear axle oil outlet 14 includes a rear axle left outlet 141 and a rear axle right outlet 142. The rear axle left solenoid valve 42 is connected to the rear axle left outlet 141, and the rear axle right solenoid valve 43 is connected to the rear axle right outlet 142.

[0033] Specifically, a front axle throttle valve 6 is connected between the left-side solenoid valve 32 of the front axle and the left-side oil outlet 131 of the front axle, and another front axle throttle valve 6 is connected between the right-side solenoid valve 33 of the front axle and the right-side oil outlet 132 of the front axle.

[0034] Specifically, a rear axle throttle valve 7 is connected between the left rear axle solenoid valve 42 and the left rear axle oil outlet 141, and another rear axle throttle valve 7 is connected between the right rear axle solenoid valve 43 and the right rear axle oil outlet 142.

[0035] Furthermore, the front axle left solenoid valve 32, the front axle right solenoid valve 33, the rear axle left solenoid valve 42, and the rear axle right solenoid valve 43 are normally closed solenoid valves. When not powered on, all of these valves are in a bidirectional cut-off state, preventing hydraulic oil from passing through them.

[0036] Specifically, the fine filter 5 has a filtration accuracy of 10µm, which meets the requirements of most transport vehicles and solenoid valves for hydraulic oil cleanliness. At the same time, the filter is detachable and can be replaced and disassembled periodically. The filter is arranged in front of each solenoid valve in the oil circuit, which can protect all solenoid valves.

[0037] Specifically, the front axle throttle valve 6 and the rear axle throttle valve 7 are one-way constant flow throttle valves. The valve core is equipped with a spring. During the oil inlet phase of the system, the valve is fully open and the built-in spring does not participate in throttling and does not form pressure compensation. During the oil return phase, the hydraulic oil flows back through the compensation port and the action of the spring, forming pressure compensation and limiting the maximum return flow of the hydraulic oil, thereby limiting the system's adjustment speed from being too fast.

[0038] Specifically, it also includes a relief valve 8, which is connected to the oil inlet 11 and the oil return port 12, and is connected in parallel with the return solenoid valve 2. The relief valve 8 is set with a relief pressure lower than the rated pressure of the front axle solenoid valve group 3 and the rear axle solenoid valve group 4. When the back pressure exceeds the relief valve 8, the relief valve 8 opens, allowing hydraulic oil to flow directly back from the oil inlet circuit to the oil tank, thereby ensuring the safety of the valve block assembly.

[0039] Specifically, it also includes a pressure sensor 9, which is fixed on the valve block body 1 and connected to the internal pipeline of the valve block body 1, and is used to detect the pressure of the internal pipeline of the valve block body 1.

[0040] Specifically, it also includes a pressure testing connector 10, which is fixed on the valve block body 1 and connected to the internal pipeline of the valve block body 1. It is used to detect the pressure of the internal pipeline of the valve block body 1 using external equipment, and at the same time, it can verify the accuracy of the data from the pressure sensor 9.

[0041] The specific workflow of this invention is as follows:

[0042] During the preparation phase, pressurized oil enters the valve block through the inlet 11 and first passes through the fine filter 5 to ensure that the hydraulic oil entering the valve block is fully filtered in advance to prevent large particles from clogging the solenoid valve. During the operation of the cylinder, particles inevitably mix into the hydraulic oil. The filter 5 can protect each solenoid valve. At the same time, depending on the operating conditions and mileage, the filter element inside the filter 5 can be removed for cleaning and can be reused.

[0043] During the preparation phase, the hydraulic oil is connected to the return port 12 through the return solenoid valve 2 and flows back to the oil tank; at the same time, the hydraulic oil in the oil passages inside each valve block is also connected to the return oil circuit and the return port 12.

[0044] When the front axle needs flushing, the front axle main solenoid valve 31, the front axle left solenoid valve 32, and the front axle right solenoid valve 33 are energized and turned on. Hydraulic oil enters the front axle oil circuit through the front axle main solenoid valve 31, and after being diverted, passes through the front axle throttle valve 6, then through the front axle left solenoid valve 32 and the front axle right solenoid valve 33, and enters the oil circuit corresponding to the front axle outlet 13 on both sides of the front axle, thus achieving flushing. Similarly, when the rear axle needs flushing, the rear axle main solenoid valve 41, the rear axle left solenoid valve 42, and the rear axle right solenoid valve 43 are energized and turned on. Hydraulic oil enters the front axle oil circuit through the rear axle main solenoid valve 41, and after being diverted, passes through the rear axle throttle valve 7, then through the rear axle left solenoid valve 42 and the rear axle right solenoid valve 42, and enters the oil circuit corresponding to the rear axle outlet 14 on both sides of the rear axle, thus achieving flushing.

[0045] When only one side of the front axle needs to be flushed with oil, the solenoid valve 32 on the left side of the front axle or the solenoid valve 33 on the right side of the front axle can be turned off, so that oil can be flushed only on one side of the cylinder of the front axle (or rear axle), achieving independent control.

[0046] When a vehicle has a significant height difference between its front and rear axles, requiring the front axle to be raised and the rear axle to be lowered for rapid leveling, the valve block assembly can be used to simultaneously flush the front axle with oil and drain the rear axle with oil. Specifically, after the pressure build-up process, the front axle main solenoid valve 31, the front axle left solenoid valve 32, the front axle right solenoid valve 33, the rear axle left solenoid valve 42, and the rear axle right solenoid valve 43 are activated, while the rear axle main solenoid valve 41 is de-energized. Similarly, when the front axle needs to be lowered and the rear axle needs to be raised, this can be achieved by operating the corresponding solenoid valves on and off.

[0047] The beneficial effects of this invention are:

[0048] This invention integrates a front axle solenoid valve group, a rear axle solenoid valve group, and a fine filter on the valve block body. It can filter hydraulic oil, control the front and rear axles independently, and realize differential linkage between the front and rear lifting, improving adjustment efficiency. The filling and discharging processes use the same oil passage, which can realize the efficient application and lightweight design of the valve block assembly. At the same time, the hydraulic oil flow rate during the return oil process is controlled by the front axle throttle valve and the rear axle throttle valve. It ensures that the throttle valve is fully open during the filling process and limits the magnitude of the return oil flow rate by the one-way constant flow rate of the four throttle valves during the discharging process, thereby limiting the speed of the return flow and improving the smoothness of the descent process.

[0049] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An aluminum alloy valve block integrated with a filter and a speed regulation function, characterized by, include: The system comprises a valve block body, a return solenoid valve, a front axle solenoid valve assembly, a rear axle solenoid valve assembly, a fine filter, a front axle throttle valve, and a rear axle throttle valve. The valve block body has an oil inlet, an oil return port, a front axle outlet, and a rear axle outlet. The return solenoid valve is embedded in the valve block body and connected to the oil inlet and the oil return port via pipes. The front axle solenoid valve assembly is embedded in the valve block body and connected to the oil inlet and the front axle throttle valve via pipes. The front axle throttle valve is connected to the front axle outlet. The rear axle solenoid valve assembly is embedded in the valve block body and connected to the oil inlet and the rear axle throttle valve via pipes. The rear axle throttle valve is connected to the rear axle outlet via a pipe. The fine filter is detachably mounted at the oil inlet and is used to filter the hydraulic oil entering the valve block body. The axle solenoid valve assembly includes a front axle main solenoid valve, a front axle left solenoid valve, and a front axle right solenoid valve. The front axle main solenoid valve is connected to the front axle left solenoid valve, the front axle right solenoid valve, and the oil inlet. The front axle left solenoid valve and the front axle right solenoid valve are connected to the front axle oil outlet. The front axle oil outlet includes a front axle left outlet and a front axle right outlet. The front axle left solenoid valve is connected to the front axle left outlet, and the front axle right solenoid valve is connected to the front axle right outlet. The rear axle solenoid valve assembly includes a rear axle main solenoid valve, a rear axle left solenoid valve, and a rear axle right solenoid valve. The rear axle main solenoid valve is connected to the rear axle left solenoid valve, the rear axle right solenoid valve, and the oil inlet. The rear axle left solenoid valve and the rear axle right solenoid valve are connected to the rear axle oil outlet.

2. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein, The main solenoid valve for the front axle is a two-position three-way solenoid valve.

3. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein, The rear axle oil outlet includes a left rear axle oil outlet and a right rear axle oil outlet. The left rear axle solenoid valve is connected to the left rear axle oil outlet, and the right rear axle solenoid valve is connected to the right rear axle oil outlet.

4. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein, The rear axle main solenoid valve is a two-position three-way solenoid valve.

5. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein, It also includes an overflow valve, which is connected to the oil inlet and the oil return port and is connected in parallel with the return solenoid valve.

6. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein, It also includes a pressure sensor, which is fixed on the valve block body and connected to the internal pipeline of the valve block body, and is used to detect the pressure of the internal pipeline of the valve block body.

7. The aluminum alloy valve block integrated with a filter tuning function of claim 1, wherein It also includes a pressure testing connector, which is fixed on the valve block body and connected to the internal pipeline of the valve block body.

Images