Anti-vibration hydraulic tank, construction machine, and control method thereof

Abstract

The application discloses an anti-vibration hydraulic oil tank, engineering machinery and a control method thereof, which comprises a tank body, a vertical partition plate, a U-shaped ear plate, a horizontal ear plate, a mounting beam, a mounting support, a rubber oil gas damper and the like. The positional relationship of the partition plate, the U-shaped ear plate and the "day" type structure support is defined, the modal and the structural strength of the hydraulic oil tank are improved, and resonance or low-order modal excitation caused by changes in the working environment and working conditions is avoided. Meanwhile, the application provides a control method of the anti-vibration hydraulic oil tank, the stiffness and the damping of the damper are changed in real time by detecting the vibration acceleration of the frame and the hydraulic oil tank, so as to weaken the vertical vibration of the hydraulic oil tank, and the horizontal vibration of the hydraulic oil tank is weakened by the annular rubber air part. The application is started from the structure and the modal characteristics, the low-order modal and the strength of the component are effectively improved, and the vertical and horizontal vibrations of the oil tank are weakened.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to an anti-vibration hydraulic oil tank, engineering machinery and its control method. Background Technology

[0002] Construction machinery is developing towards higher power, multi-functionality, and high-altitude operation. However, the resulting large impacts and strong vibrations have highlighted fatigue failure issues in system components such as hydraulic tanks. The hydraulic tank is a major component of the vehicle's power system, and its fatigue life is crucial for vehicle operation. However, cracks or fractures often occur in the base material and welds at locations such as the bulkhead, internal partitions, and bottom mounting beams, leading to hydraulic oil leaks, vehicle downtime, and negatively impacting the environment, the vehicle itself, and customer satisfaction.

[0003] Currently, hydraulic oil tanks used in construction machinery are generally rigidly connected to the vehicle frame with bolts, and their internal partitions are directly connected to the hydraulic oil tank body by welding. Disadvantages of existing technology: 1) The main structure of the hydraulic oil tank is welded and fixed, which is simple in structure, insufficient in strength, and prone to resonance due to vibration excitation of the power assembly and working device; 2) The design of the hydraulic oil tank did not fully consider the alternating changes in air pressure inside the tank caused by the hydraulic pump's oil suction and the hydraulic system's oil return, which increased the alternating stress at the inner wall of the hydraulic oil tank; 3) The internal partition of the hydraulic oil tank is directly welded to the hydraulic oil tank body. Since both are thin plates, the thermal deformation caused by welding can easily lead to stress concentration, which in turn becomes a point of fracture risk. 4) Because the hydraulic oil tank is directly connected to the frame, the vibration source excitation can be directly transmitted to the hydraulic oil tank, causing vibration fatigue failure. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anti-vibration hydraulic oil tank, engineering machinery, and its control method. To achieve the above objectives, the present invention is implemented using the following technical solution: In a first aspect, the present invention provides a vibration-resistant hydraulic oil tank, comprising: Hydraulic oil tank body; The H-shaped base is connected to the bottom of the hydraulic oil tank body; The H-shaped base is welded to the bottom of the hydraulic oil tank. A vertical partition is installed above the H-shaped crossbeam inside the hydraulic oil tank. The vertical partition is connected to the bottom of the hydraulic oil tank via an ear plate.

[0005] The above setup has the following effects: The bottom-designed H-shaped mounting beam is connected to the bottom of the hydraulic oil tank via a pad. A vertical partition is installed above the H-shaped beam inside the hydraulic oil tank, and the vertical partition is connected to the bottom of the hydraulic oil tank via a pad. This further improves the inherent modes of the hydraulic oil tank and avoids resonance or low-order mode excitation of the hydraulic oil tank caused by changes in the working environment or working conditions.

[0006] Furthermore, the vertical partition includes vertical partition one, vertical partition two, and vertical partition three, which correspond to the three crossbeams of the sun-shaped base from left to right. The ear plate includes a U-shaped ear plate one, a vertical ear plate, and a U-shaped ear plate two; The vertical partition is connected to the hydraulic oil tank body via a U-shaped lug. The second vertical partition is connected to the hydraulic oil tank body via a vertical ear plate and a horizontal ear plate. The vertical partition three is connected to the hydraulic oil tank body through the U-shaped lug two; Furthermore, the vertical partition 5 and the U-shaped ear plate 8 are connected by welding. The U-shaped ear plate 8 and the hydraulic oil tank body 1 are connected by welding. The U-shaped ear plate is located above the two longitudinal beams, and the width of the ear plate is twice the width of the longitudinal beams. Vertical partition 5 is located above U-shaped ear plate 8, and the height of vertical partition 5 is 1 / 4 of the height of hydraulic oil tank body 1.

[0007] The vertical partition 3 7 and U-shaped ear plate 2 11 are arranged in the same way as the vertical partition 1 5 and U-shaped ear plate 1 8, and are symmetrically distributed with the hydraulic oil tank body 1 as the central axis.

[0008] The effects of the above settings are as follows: Vertical baffle 6 is connected to horizontal ear plate 9 and vertical ear plate 10 by welding. After optimization analysis, weight reduction optimization is carried out without affecting the vibration fatigue reliability of the baffle. The U-shaped ear plate is widened, and the width of the ear plate is twice the width of the longitudinal beam. This is used to reduce the impact of welding thermal deformation and welding residual stress on the vibration fatigue life of the weld, ultimately improving the overall connection strength of the bottom of the hydraulic oil tank and enhancing the first-order vibration mode.

[0009] Furthermore, all of the vertical partitions are perforated partitions.

[0010] The effect of the above settings is to optimize weight reduction without affecting the vibration fatigue reliability of the partition. Furthermore, it also includes: A rubber-oil-gas damper is installed between the H-shaped base and the frame to achieve a soft connection between the hydraulic oil tank and the frame.

[0011] The power station for rubber oil-gas dampers is used to provide high-pressure oil replenishment to the rubber oil-gas dampers in real time. The power station for the rubber oil-gas damper includes a valve block, a micro motor pump, and a one-way valve group, a diversion valve, a high-speed switching valve, a proportional safety valve, and a bladder accumulator valve integrated in the valve block. The valve block is connected to the bottom of the hydraulic oil tank by bolts; The rubber oil-gas damper is connected to the output port of the diverter valve through the one-way valve group; The inlet of the diverter valve is connected to the outlet of the bladder accumulator valve, the outlet of the high-speed switching valve, and the inlet of the proportional safety valve, respectively. The inlet of the high-speed switching valve is connected to the outlet of the micro motor pump; the outlet of the proportional safety valve is connected to the inlet of the micro motor pump.

[0012] The above settings achieve the following effect: The installer can actively control the direction of the elastic main shaft of the installed rubber oil-air damper in real time according to the vehicle's own operating characteristics, and the radial direction of the installed rubber oil-air damper can be reduced by the rubber air damping part.

[0013] Furthermore, it also includes an acceleration sensor for collecting acceleration values ​​of the frame and hydraulic tank near each rubber-oil damper, and a controller connected to the bladder accumulator valve, high-speed switching valve, micro motor pump, proportional safety valve, and acceleration sensor respectively. The controller is used to perform the following steps: Step A: If all relevant sensors are working normally, continue working; otherwise, stop working. Step B: Detect the pressure signal of the bladder accumulator valve; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, start the high-speed switching valve and start the micro motor pump; if no, proceed to cycle step B; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, close the high-speed switching valve and shut down the micro motor pump; if no, proceed to cycle step B. Step C: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is greater than the set threshold. If so, control the proportional safety valve to activate, so that the difference between the frame acceleration and the hydraulic tank acceleration is reduced; otherwise, proceed to the loop step C. Step D: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is less than the set threshold. If so, control the high-speed switching valve to activate and control the micro motor pump to start and stop, so as to reduce the difference between the frame acceleration and the hydraulic tank acceleration. If not, proceed to the loop step D. Step E: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether they exceed the set safety value. If so, control the proportional safety valve to stop operating after reaching the safety value, and control the high-speed switching valve to stop the micro motor pump. If not, proceed to the cycle of Step E.

[0014] Furthermore, the one-way valve assembly, diverter valve, high-speed switching valve, proportional safety valve, micro motor pump, and bladder accumulator valve are all connected to the valve block via threads. The valve block is connected to the rubber oil damper via a hydraulic oil pipe.

[0015] Furthermore, the sun-shaped base 3 is a closed "sun" shaped structure, and the length ratio of its three horizontal beams to its two vertical beams is approximately 0.8:1; The oil tank's H-shaped base 3 has 6 mounting holes at its lower part for placing the rubber oil-gas damper 4.

[0016] The direction of the elastic main shaft of the rubber-oil damper 4 is selected according to the vehicle's own operating characteristics. When the vehicle load is mainly vertical, the axial elastic main shaft is selected; when the vehicle sways left and right or back and forth, the radial elastic main shaft is selected.

[0017] Furthermore, the annular rubber air damping device includes an annular connecting flange, a damper cylinder, and an annular rubber air damping device. The annular rubber air damping device is connected to the annular connecting flange and the damper cylinder body by vulcanization.

[0018] Secondly, the present invention provides an engineering machinery comprising the vibration-resistant hydraulic tank described in the first aspect.

[0019] Thirdly, the present invention provides a control method for an anti-vibration hydraulic oil tank, based on an anti-vibration hydraulic oil tank, the anti-vibration hydraulic oil tank comprising: Hydraulic oil tank body; The H-shaped base is connected to the bottom of the hydraulic oil tank body; A rubber-hydraulic damper is installed between a H-shaped base and the vehicle frame to achieve a flexible connection between the hydraulic oil tank and the vehicle frame. A power station for the rubber-hydraulic damper provides real-time high-pressure hydraulic fluid replenishment. An acceleration sensor collects the acceleration values ​​of the vehicle frame and hydraulic oil tank near each rubber-hydraulic damper. The power station includes a valve block, a micro-motor pump, and integrated check valve assembly, flow divider valve, high-speed switching valve, proportional safety valve, and bladder accumulator valve within the valve block. The valve block is bolted to the bottom of the hydraulic oil tank. The rubber-hydraulic damper is connected to the output port of the flow divider valve via the check valve assembly. The input port of the flow divider valve is connected to the outlet of the bladder accumulator valve, the outlet of the high-speed switching valve, and the inlet of the proportional safety valve. The inlet of the high-speed switching valve is connected to the outlet of the micro-motor pump. The outlet of the proportional safety valve is connected to the inlet of the micro-motor pump. The method includes the following steps: Step A: If all relevant sensors are working normally, continue working; otherwise, stop working. Step B: Detect the pressure signal of the bladder accumulator valve; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, start the high-speed switching valve and start the micro motor pump; if no, proceed to cycle step B; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, close the high-speed switching valve and shut down the micro motor pump; if no, proceed to cycle step B. Step C: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is greater than the set threshold. If so, control the proportional safety valve to activate, so that the difference between the frame acceleration and the hydraulic tank acceleration is reduced; otherwise, proceed to the loop step C. Step D: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is less than the set threshold. If so, control the high-speed switching valve to activate and control the micro motor pump to start and stop, so as to reduce the difference between the frame acceleration and the hydraulic tank acceleration. If not, proceed to the loop step D. Step E: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether they exceed the set safety value. If so, control the proportional safety valve to stop operating after reaching the safety value, and control the high-speed switching valve to stop the micro motor pump. If not, proceed to the cycle of Step E.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: ①The bottom is designed with a H-shaped mounting beam, which is connected to the bottom of the hydraulic oil tank by a pad. A vertical partition is installed above the H-shaped beam inside the hydraulic oil tank. The vertical partition is connected to the bottom of the hydraulic oil tank by a pad, which further improves the inherent mode of the hydraulic oil tank and avoids resonance or low-order mode excitation of the hydraulic oil tank caused by changes in the working environment and working conditions. ② The installation of a rubber hydropneumatic damper on the bottom bracket of the oil tank can achieve a soft connection between the hydraulic oil tank body and the vehicle frame, which can effectively attenuate vertical and horizontal vibrations; ③ The use of partition plates and ear plates together can reduce stress concentration during welding and vibration processes and improve the vibration fatigue reliability of the partition plates; ④ The control method for the anti-vibration hydraulic oil tank fully considers the correlation between the hydraulic oil tank and the oil-air damper, facilitates active control, and further improves the anti-vibration performance of the hydraulic oil tank. Attached Figure Description

[0021] Figure 1 This is a perspective view of the vibration-resistant hydraulic oil tank in the embodiment. Figure 2 This is a schematic diagram of the internal structure of the vibration-resistant hydraulic oil tank in an embodiment. Figure 1 ; Figure 3 This is a schematic diagram of the internal structure of the vibration-resistant hydraulic oil tank in an embodiment. Figure 2 ; Figure 4 The power station for the vibration-resistant hydraulic oil tank is shown in the example. Figure 5 Rubber oil-gas damper for vibration-resistant hydraulic oil tank (example); Figure 6 This is a diagram showing the internal relationships of the various components of the power station.

[0022] In the diagram: 1. Hydraulic oil tank body; 2. Rubber oil-air damper power station; 3. Hydraulic oil tank bottom H-shaped base; 4. Rubber oil-air damper; 5. Vertical partition one; 6. Vertical partition two; 7. Vertical partition three; 8. U-shaped ear plate one; 9. Horizontal ear plate; 10. Vertical ear plate; 11. U-shaped ear plate two; 2.1 Valve block; 2.2 Check valve assembly; 2.3 Flow divider valve; 2.4 High-speed switching valve; 2.5 Proportional safety valve; 2.6 Micro motor pump; 2.7 Bladder accumulator; 4.1 Annular connecting flange; 4.2 Damper cylinder body; 4.3 Annular rubber air damping device. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0024] Example 1: This embodiment provides a vibration-resistant hydraulic oil tank, including a hydraulic oil tank body 1, a rubber oil-air damper power station 2, a bottom H-shaped base 3, a rubber oil-air damper 4, a first vertical partition 5, a second vertical partition 6, a third vertical partition 7, a first U-shaped lug 8, a horizontal lug 9, a vertical lug 10, a second U-shaped lug 11, a valve block 2.1, a one-way valve assembly 2.2, a flow divider valve 2.3, a high-speed switching valve 2.4, a proportional safety valve 2.5, a micro motor pump 2.6, a bladder accumulator 2.7, an annular connecting flange 4.1, a damper cylinder body 4.2, and an annular rubber air damping device 4.3.

[0025] The hydraulic oil tank body 1 is formed on four sides; The hydraulic oil tank body 1 and the oil tank H-shaped base 3 are connected by welding. The rubber oil-gas damper 4 is located between the oil tank's H-shaped base 3 and the vehicle frame, enabling a soft connection between the hydraulic oil tank body 1 and the vehicle frame. The valve block 2.1 is connected to the bottom of the hydraulic oil tank 1 by bolts; The one-way valve group 2.2, the diverter valve 2.3, the high-speed switching valve 2.4, the proportional safety valve 2.5, the micro motor pump 2.6, the bladder accumulator valve 2.7, and the valve block 2.1 are connected by threads. The valve block 2.1 is connected to the rubber oil-gas damper 4 through a hydraulic oil pipe; The first vertical partition plate 5 is connected with the first U-shaped ear plate 8 by welding, and the first U-shaped ear plate 8 is connected with the hydraulic tank body 1 by welding; The second vertical partition plate 6 is connected with the horizontal ear plate 9 and the vertical ear plate 10 by welding, and the horizontal ear plate 9 and the vertical ear plate 10 are connected with the hydraulic tank body 1 by welding; The third vertical partition plate 7 is connected with the second U-shaped ear plate 11 by welding, and the second U-shaped ear plate 11 is connected with the hydraulic tank body 1 by welding; Preferably, the vertical partition plates in the hydraulic tank are connected with the hydraulic tank body through ear plates, so as to avoid large thermal deformation and welding residual stress concentration caused by welding of thin plate parts; the inner partition plates on both sides of the vertical partition plates are located directly above the two longitudinal beams of the "日"-shaped structural support, which can improve the modal performance and strength of the partition plates and the oil tank, and avoid resonance or low-order modal excitation caused by changes in working environment and working conditions.

[0026] The annular rubber air damping device 4.3 is connected with the annular connecting flange 4.1 and the damper cylinder block 4.2 by vulcanization.

[0027] As Figures 1 to 5 , an anti-vibration hydraulic tank comprises a hydraulic tank body 1, the tank body is provided with four sides of pressing, and the pressing can increase the rigidity of the tank body. A "日"-shaped base 3 of the oil tank is a closed "日"-shaped structure, and the length ratio of three transverse beams to two longitudinal beams of the base is about 0.8:1, so as to ensure the stiffness of the support and strengthen the strength of the hydraulic tank, and avoid resonance or low-order modal excitation caused by changes in working environment and working conditions.

[0028] Six mounting holes are simultaneously processed on the "日"-shaped base 3 of the oil tank for placing the rubber oil-gas dampers 4.

[0029] The direction of the elastic main shaft of the rubber oil-gas damper 4 can be selected according to the operation characteristics of the vehicle itself. Taking a broken-type large excavator as an example, when the excavator breaks rock, the main vibration excitation direction is the installation axial direction of the hydraulic tank; when a drill rod is used to move stones to other positions, the main vibration excitation direction is the installation vertical direction of the oil tank, and the radial vibration excitation is relatively small. Therefore, the rubber oil-gas dampers 4 are installed at six positions, the damper cylinder body 4.2 plays a main role in the axial direction, and the annular rubber air damping device 4.3 plays a main role in the radial direction. The rubber oil-gas damper 4 has the characteristics of low frequency, large damping and high stiffness in axial and radial directions, which can effectively attenuate low-frequency and large-amplitude vibration.

[0030] The direction of the elastic main shaft of the rubber oil-gas damper 4 can be actively controlled in real time according to the operation characteristics of the vehicle itself, and the radial direction of the installed rubber oil-gas damper 4 can be damped by the rubber air damping part. Each mount has the characteristics of low frequency, large damping and high stiffness, which can effectively attenuate low-frequency and large-amplitude vibration; Vertical partition 5 is connected to U-shaped lug 8 by welding, and U-shaped lug 8 is connected to hydraulic oil tank body 1 by welding. A wider U-shaped lug is added, positioned above the two longitudinal beams, with a width twice that of the longitudinal beams. This is to reduce the impact of welding thermal deformation and residual welding stress on the vibration fatigue life of the weld, ultimately improving the overall connection strength of the bottom of the hydraulic oil tank and enhancing the first-order vibration mode.

[0031] Vertical partition 5 is located above U-shaped ear plate 8. After optimization analysis, the optimal height of vertical partition 5 is 1 / 4 of the height of hydraulic oil tank body 1, which improves the vibration fatigue reliability of the partition and ensures that the vertical partition uses the least amount of material. At the same time, the vertical partition 5 is perforated to reduce weight without affecting the vibration fatigue reliability of the partition.

[0032] The vertical partition 3 7 and U-shaped ear plate 2 11 are arranged in the same way as the vertical partition 1 5 and U-shaped ear plate 1 8, and are symmetrically distributed with reference to the axis of the hydraulic oil tank body 1 to ensure uniform distribution of structural strength.

[0033] Vertical partition 6 is connected to horizontal ear plate 9 and vertical ear plate 10 by welding. After optimization analysis, weight reduction optimization is carried out without affecting the vibration fatigue reliability of the partition.

[0034] Specifically, the power station 2 for the rubber oil-gas damper 4 is used to provide high-pressure oil replenishment to the rubber oil-gas damper 4 in real time. like Figure 6 As shown, the power station 2 of the rubber oil-gas damper 4 includes a valve block 2.1, a micro motor pump 2.6, and a one-way valve group 2.2, a diverter valve 2.3, a high-speed switching valve 2.4, a proportional safety valve 2.5, and a bladder accumulator 2.7 integrated in the valve block 2.1; The valve block 2.1 is connected to the bottom of the hydraulic oil tank 1 by bolts; The rubber oil-gas damper 4 is connected to the output port of the diversion valve 2.3 through the one-way valve group 2.2; The inlet of the diversion valve 2.3 is connected to the outlet of the bladder accumulator 2.7, the high-speed switching valve 2.4, and the inlet of the proportional safety valve 2.5, respectively. The inlet of the high-speed switching valve 2.4 is connected to the outlet of the micro motor pump 2.6; the outlet of the proportional safety valve 2.5 is connected to the inlet of the micro motor pump 2.6.

[0035] The installer actively controls the direction of the elastic main shaft of the rubber oil-air damper 4 in real time according to the vehicle's own operating characteristics. The radial direction of the rubber oil-air damper 4 can be reduced by the rubber air damping part.

[0036] It also includes an acceleration sensor for collecting the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper 4, and a controller connected to the bladder accumulator 2.7, high-speed switching valve 2.4, micro motor pump 2.6, proportional safety valve 2.5, and acceleration sensor, respectively. The controller is used to perform the following steps: Step A: If all relevant sensors are working normally, continue working; otherwise, stop working. Step B: Detect the pressure signal of the bladder accumulator 2.7; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, start the high-speed switching valve 2.4 and start the micro motor pump 2.6; if no, proceed to the cycle step B; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, close the high-speed switching valve 2.4 and close the micro motor pump 2.6; if no, proceed to the cycle step B. Step C: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper 4, and compare them to determine whether the difference between the two is greater than the set threshold. If so, control the proportional safety valve 2.5 to reduce the difference between the frame acceleration and the hydraulic tank acceleration; otherwise, proceed to the loop step C. Step D: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper 4, compare them, and determine whether the difference between the two is less than the set threshold. If so, control the high-speed switching valve 2.4 to operate and control the micro motor pump 2.6 to start and stop, so as to reduce the difference between the frame acceleration and the hydraulic tank acceleration. If not, proceed to the loop step D. Step E: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper 4, and determine whether they exceed the set safety value. If so, control the proportional safety valve 2.5 to stop operating after reaching the safety value, and control the high-speed switching valve 2.4 to operate, and control the micro motor pump 2.6 to stop. If not, proceed to the cycle step E.

[0037] Example 2: This embodiment provides an engineering machine that includes the vibration-resistant hydraulic oil tank described in Embodiment 1.

[0038] Example 3: This embodiment provides a control method for an anti-vibration hydraulic oil tank, based on the anti-vibration hydraulic oil tank described in Embodiment 1, including: Acquire signals of chassis acceleration, hydraulic tank acceleration, and accumulator pressure; The impact of chassis vibration on the hydraulic oil tank is reduced by actively controlling the rubber-oil damper. The vibration acceleration of the chassis and hydraulic oil tank is identified, and the high-speed switching valve, proportional safety valve and micro motor pump are controlled in real time to reduce the vibration transmitted from the chassis to the hydraulic oil tank. Specifically, the adjustment of the rubber oil-gas damper follows the following... Figure 6 The control method for the vibration-resistant hydraulic oil tank shown includes the following steps: Step A: If all relevant sensors are working normally, continue working; otherwise, stop working. Step B: Detect the accumulator pressure signal; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, start the high-speed switching valve and start the micro motor pump; if no, proceed to cycle step B; determine whether the accumulator pressure value is greater than the minimum set pressure value. If yes, close the high-speed switching valve and close the micro motor pump; if no, proceed to cycle step B. Step C: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is greater than the set threshold. If so, control the proportional safety valve to activate, so that the difference between the frame acceleration and the hydraulic tank acceleration is reduced; otherwise, proceed to the loop step C. Step D: Detect and compare the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether the difference between the two is less than the set threshold. If so, control the high-speed switching valve to activate and control the micro motor pump to start and stop, so as to reduce the difference between the frame acceleration and the hydraulic tank acceleration. If not, proceed to the loop step D. Step E: Detect the acceleration values ​​of the frame and hydraulic tank near each rubber hydropneumatic damper, and determine whether they exceed the set safety value. If so, control the proportional safety valve to stop operating after reaching the safety value, and control the high-speed switching valve to stop the micro motor pump. If not, proceed to the cycle of Step E.

[0039] Note that the execution device of the method in this embodiment can be a vehicle controller or a separate controller.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 mechanical connection or an electrical 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 according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0044] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0045] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0046] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vibration-resistant hydraulic oil tank, characterized in that, Comprising: a hydraulic oil tank body; a day-shaped base, wherein the day-shaped base is a closed "day"-shaped structure, comprising three cross beams and two longitudinal beams; the day-shaped base is connected to the bottom of the hydraulic oil tank body; the day-shaped base is connected with the bottom of the hydraulic oil tank body by welding; a vertical partition plate is installed above the cross beam corresponding to the day-shaped base in the hydraulic oil tank body, and the vertical partition plate is connected with the bottom of the hydraulic oil tank body through ear plates; the vertical partition plates comprise a first vertical partition plate, a second vertical partition plate and a third vertical partition plate which sequentially correspond to the three cross beams of the day-shaped base from left to right; the ear plates comprise a first U-shaped ear plate, a vertical ear plate, a horizontal ear plate and a second U-shaped ear plate; the first vertical partition plate is connected with the hydraulic oil tank body through the first U-shaped ear plate; the second vertical partition plate is connected with the hydraulic oil tank body through the vertical ear plate and the horizontal ear plate; the third vertical partition plate is connected with the hydraulic oil tank body through the second U-shaped ear plate; the first vertical partition plate is connected with the first U-shaped ear plate by welding, the first U-shaped ear plate is welded with the hydraulic oil tank body, the first U-shaped ear plate is located above the two longitudinal beams, and the width of the first U-shaped ear plate is twice the width of the longitudinal beam; the first vertical partition plate is located above the first U-shaped ear plate, and the height of the first vertical partition plate is 1 / 4 of the height of the hydraulic oil tank body; the arrangement of the third vertical partition plate and the second U-shaped ear plate is consistent with that of the first vertical partition plate and the first U-shaped ear plate, and the arrangement is symmetrically distributed with the axial direction of the hydraulic oil tank body as the central axis.

2. The vibration-resistant hydraulic oil tank according to claim 1, characterized in that, the first vertical partition plate, the second vertical partition plate and the third vertical partition plate are all perforated partition plates.

3. The vibration-resistant hydraulic oil tank according to claim 1, characterized in that, further comprising: rubber oil-gas dampers, wherein the rubber oil-gas dampers are arranged between the day-shaped base and a vehicle frame, and are used for realizing soft connection between the hydraulic oil tank and the vehicle frame; a rubber oil-gas damper power station, which is used for supplementing high-pressure oil to the rubber oil-gas dampers in real time; the rubber oil-gas damper power station comprises a valve block, a micro motor pump, and a one-way valve group, a shunt valve, a high-speed on-off valve, a proportional safety valve and a bladder accumulator valve which are integrated in the valve block; the valve block is connected with the bottom of the hydraulic oil tank body through bolts; the rubber oil-gas damper is connected with an output port of the shunt valve through the one-way valve group; an input port of the shunt valve is respectively connected with the bladder accumulator valve, an outlet of the high-speed on-off valve and an inlet of the proportional safety valve; an inlet of the high-speed on-off valve is connected with an outlet of the micro motor pump; an outlet of the proportional safety valve is connected with an inlet of the micro motor pump.

4. The vibration-resistant hydraulic oil tank according to claim 3, characterized in that, the length ratio of the cross beam to the longitudinal beam of the day-shaped base is 0.8:1; the lower part of the day-shaped base is provided with 6 mounting holes for placing the rubber oil-gas dampers; the direction of the elastic main shaft of the rubber oil-gas damper is selected according to the operation characteristics of the vehicle: when the vehicle load mainly acts up and down, the axial elastic main shaft is selected; when the vehicle shakes left and right or back and forth, the radial elastic main shaft is selected.

5. The vibration-resistant hydraulic oil tank according to claim 3, characterized in that, The rubber-oil-gas damper includes an annular connecting flange, a damper cylinder, and an annular rubber-air damper. The annular connecting flange and the damper cylinder are connected to the annular rubber-air damper by vulcanization.

6. An engineering machinery, characterized in that, It includes the anti-vibration hydraulic oil tank as described in any one of claims 1 to 5.

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