A hydraulic system and method for use in special vehicles

Abstract

The application discloses a hydraulic system and method applied to special vehicles, relates to the technical field of hydraulic systems, and aims to solve the technical problems of poor stability of a single supporting structure during normal operation of a traditional special operation vehicle, easy shaking and overturning of the vehicle in complex terrains or under external force, no emergency scheme when the oil circuit of the supporting structure is damaged, interruption of operation caused by instability of the vehicle, insufficient supporting force under special environments, incapability of adapting to the environment, and limitation of application and efficiency, and comprises a vehicle mechanism and a hydraulic mechanism. The application realizes double locking of the first hydraulic device by the second hydraulic device, ensures stability of the supporting structure under dynamic load, and guarantees safety of operation personnel and equipment. When one of the hydraulic devices is damaged, the other hydraulic device can be immediately put into use, normal realization of the supporting function of the vehicle is ensured, reliability and fault tolerance of the whole supporting system are greatly improved, and operation interruption and delay caused by faults of the supporting system are reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system technology, and more specifically, to a hydraulic system and method for use in special vehicles. Background Technology

[0002] Special-purpose vehicles play a crucial role in many fields. Their operating environment is complex and ever-changing, which places extremely high demands on the stability and support performance of the vehicles. At present, special-purpose vehicles generally use a single oil circuit system to drive the support structure to achieve the support and fixation of the vehicle. This traditional design has revealed many limitations in practical applications.

[0003] During normal operation, a single hydraulic system drives a single support structure to lower and support the vehicle. While this can meet basic requirements, it lacks sufficient support stability. Relying solely on a single support structure and lacking an effective multi-auxiliary fixing mechanism, the vehicle is prone to swaying or even overturning when facing complex terrain or external interference, seriously threatening the safety of personnel and equipment. When the single support structure malfunctions or fails to lower the vehicle normally, the traditional single hydraulic system lacks an effective emergency support plan. The vehicle will lose stability due to loss of support, leading to work interruption. This not only affects the project progress but may also trigger a series of safety issues. Furthermore, under certain special environmental conditions, such as strong winds or soft soil foundations, the single support structure may not be able to provide reliable support for the vehicle due to insufficient support strength. The traditional single hydraulic system cannot adjust the support method and enhance the support strength in a timely manner according to environmental changes, making it difficult for the vehicle to adapt to complex and harsh working environments and limiting the application scope and operational efficiency of special-purpose vehicles.

[0004] In view of this, we propose a hydraulic system and method for use in special vehicles. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic system and method for use in special vehicles, in order to solve the technical problems that traditional special operation vehicles usually use a single oil circuit system, which has poor stability of the single support structure during normal operation, and is prone to shaking and overturning in complex terrain or under external forces; there is no emergency plan when the oil circuit of the support structure is damaged, resulting in vehicle instability and interruption of operation; and the support force is insufficient in special environments, making it unable to adapt to the environment and limiting its application and effectiveness.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydraulic system and method for use in special vehicles, comprising a vehicle mechanism and a hydraulic mechanism, wherein the vehicle mechanism is connected to the hydraulic mechanism; The vehicle mechanism includes a vehicle body, a control system and a connection component disposed within the vehicle body, wherein the connection component is located at the rear of the vehicle body; The hydraulic mechanism includes two No. 1 hydraulic actuators, two mounting components connected to the two No. 1 hydraulic actuators, two adjusting components connected to the two mounting components, a transmission component, a pressure component, two conveying components connected to the pressure components, and two No. 2 hydraulic actuators. The transmission component is connected to the adjusting component, the transmission component is connected to the pressure component, the No. 2 hydraulic actuator is connected to the vehicle body, and the conveying component is connected to the control component. The first hydraulic unit is used for regular support of the vehicle body, and the second hydraulic unit is used to support the vehicle body when the first hydraulic unit fails. The adjustment assembly and transmission assembly are used to strengthen the connection between the first hydraulic unit and the second hydraulic unit, and the pressure assembly is used to strengthen the connection between the pressure assembly and the adjustment assembly.

[0007] This invention achieves dual locking of the first hydraulic unit through the second hydraulic unit, ensuring the stability of the support structure under dynamic loads. This reduces the probability of safety accidents such as vehicle shaking and overturning caused by unstable support, and protects the safety of operators and equipment. In the event of failure of one hydraulic unit, the other hydraulic unit can be put into use immediately to ensure the normal operation of the vehicle support function. This greatly improves the reliability and fault tolerance of the entire support system and reduces work interruptions and delays caused by support system failures.

[0008] Preferably, the vehicle body is fixedly connected to the control system, and the rear of the vehicle body is fixedly connected to the connecting assembly; The rear of the vehicle body is fixedly connected to two No. 1 hydraulic actuators, and the rear of the vehicle body is fixedly connected to a No. 2 hydraulic actuator.

[0009] Preferably, the first hydraulic unit is fixedly connected to the mounting assembly, one side of the mounting assembly is fixedly connected to the adjusting assembly, the adjusting assembly meshes with the transmission assembly, the outer wall of the adjusting assembly overlaps with the pressure assembly, the transmission assembly is snapped into the pressure assembly, the pressure assembly is connected to the conveying assembly, the conveying assembly is connected to the control assembly, the control assembly is snapped into the outside of the adjusting assembly, and the lower part of the pressure assembly is fixedly connected to the second hydraulic unit.

[0010] Preferably, the control system includes a hydraulic oil tank, which is connected to a steering pump. The other end of the steering pump is connected to a reversing valve, and the other end of the reversing valve is connected to a safety valve. The safety valve is connected to two pneumatic springs, and the two pneumatic springs are connected to two control valve groups. The outlets of the two control valve groups are both connected to the hydraulic oil tank. The hydraulic oil tank is fixedly connected to the vehicle body, and the two oil springs and control valve groups are respectively connected to the No. 1 hydraulic actuator and the No. 2 hydraulic actuator. The connecting assembly includes a rear tailgate, a limiting groove is provided at the rear of the rear tailgate, and a limiting rod is slidably connected in the limiting groove; The rear tailgate is fixedly connected to the rear of the vehicle body, and the other end of the limiting rod is fixedly connected to the adjustment assembly.

[0011] Preferably, the installation assembly includes a positioning plate, and a first elastic telescopic rod is fixedly connected to one side of the positioning plate; The other end of the first elastic telescopic rod is fixedly connected to one side of the adjustment assembly, and the positioning plate is fixedly connected to the outside of the first hydraulic unit; The adjustment assembly includes a vertical plate, with several toothed blocks fixedly connected to one side of the vertical plate and several limiting teeth fixedly connected to the other side of the vertical plate. An installation groove is provided on the front of the vertical plate, and a second elastic telescopic rod is fixedly connected to the upper part of the inner wall of the installation groove. A connecting rod is fixedly connected to the bottom end of the second elastic telescopic rod, and a base plate is fixedly connected to the bottom end of the connecting rod. The upper part of the base plate overlaps with the lower part of the vertical plate. The rear of the vertical plate is fixedly connected to one end of the first elastic telescopic rod, and the transmission component meshes with the toothed block.

[0012] Preferably, the transmission assembly includes a gear, a drive rod is fixedly connected to one side of the gear, a turntable is fixedly connected to the other end of the drive rod, a first rotator is snapped onto the outside of the turntable, and a lever is fixedly connected to the outside of the first rotator; The other end of the lever is fixedly connected to the pressure assembly, the turntable is located inside the pressure assembly, and the gear meshes with several tooth blocks.

[0013] Preferably, the pressure assembly includes a sealing sleeve, a sealing plate slidably connected inside the sealing sleeve, two one-way valves provided on one side of the sealing plate, a second rotator clamped to one side of the sealing plate via a bracket, a base fixedly connected to the lower part of the sealing sleeve, and a mounting plate fixedly connected to the lower part of the base. One side of the mounting plate is located above the base plate, and the other side of the mounting plate is fixedly connected to the outside of the No. 2 hydraulic unit. The other end of the lever is fixedly connected to the outside of the No. 2 rotator. Both the No. 1 rotator and the No. 2 rotator include bearings and rotating shafts.

[0014] Preferably, the conveying assembly includes a connecting pipe, the other end of which is connected to a connecting pipe, and a positioning frame is fixedly connected to the outside of the connecting pipe; The connecting pipe is connected to the regulating valve through the control component. The other end of the regulating valve is connected to the telescopic pipe. The other end of the telescopic pipe is fixedly connected to the limit block. The positioning frame is slidably connected to one side of the vertical plate. The position of the limit block is adapted to the shape between two adjacent limit teeth.

[0015] Preferably, the control component includes a sealing cylinder with tapered ends. An isolation plate is snapped into the sealing cylinder, and a No. 3 elastic telescopic rod is fixedly connected to one side of the isolation plate. A retainer is fixedly connected to the outside of the No. 3 elastic telescopic rod, and the retainer is fixedly connected inside the sealing cylinder. The two ends of the sealing cylinder are respectively connected to the regulating valve and the connecting pipe.

[0016] A method of using a hydraulic system for special vehicles includes the following steps: S1. Hydraulic oil is injected into the No. 1 hydraulic unit through the control system. The No. 1 hydraulic unit extends to support the vehicle body. S2. In normal use mode, hydraulic unit No. 1 supports the vehicle body. If hydraulic unit No. 1 is damaged, the backup mode is activated. Hydraulic oil is injected into hydraulic unit No. 2 through the control system. Hydraulic unit No. 2 supports the vehicle body. In special environments, the reinforcement mode is activated. Hydraulic oil is injected into hydraulic unit No. 1 and hydraulic unit No. 2 at the same time through the control system, so that the two work together to improve the support stability and load-bearing capacity.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the design of adjustment components, control systems, and pressure components, uses a primary hydraulic unit to support the vehicle body. When the primary hydraulic unit extends, it drives the vertical plate downwards via the mounting plate and the primary elastic telescopic rod. At this time, the vertical plate drives the gear to rotate via the toothed blocks on its surface. During the rotation, the gear reciprocates through the lever, pushing the sealing plate to slide within the sealing sleeve. External gas is drawn in through a one-way valve and injected into the sealing cylinder, causing the gas to accumulate and compress the isolation plate within the sealing cylinder. When the primary hydraulic unit extends to its limit position, reaching the height of the vehicle body above the ground, the pressure buildup within the sealing cylinder pushes the isolation plate further into the sealing cylinder. The sliding mechanism allows a large amount of gas to be rapidly discharged along the sealing cylinder into the telescopic tube, thereby pushing the telescopic tube to extend and squeeze the limiting block into the space between two adjacent limiting teeth. This enables the second hydraulic unit to achieve a double lock on the first hydraulic unit, ensuring the stability of the support structure under dynamic loads. This reduces the probability of safety accidents such as vehicle shaking and overturning caused by unstable support, ensuring the safety of operators and equipment. If one hydraulic unit fails, the other hydraulic unit can be put into use immediately, ensuring the normal operation of the vehicle support function. This greatly improves the reliability and fault tolerance of the entire support system and reduces work interruptions and delays caused by support system failures.

[0018] 2. This invention also incorporates a second hydraulic unit, an adjustment assembly, a transmission assembly, and a pressure assembly. When the first hydraulic unit is damaged, the control system automatically switches to standby mode. Hydraulic oil is introduced into the second hydraulic unit to extend it. Because the mounting plate is synchronously connected to the second hydraulic unit, the mounting plate moves downward, causing the base plate to move downward as well. This allows the base plate to synchronously pull the second elastic telescopic rod to extend via the connecting rod. The gear rolls on the surface of the tooth block, and because the gear disengages from the tooth block early, the pressure is insufficient to extend the telescopic tube. Therefore, the second hydraulic unit can move downward stably, providing support for the vehicle body. Since the base plate is precisely fitted under the pull of the second elastic telescopic rod, the first hydraulic unit can reinforce its support for the second hydraulic unit through the positioning plate and vertical plate, absorbing some of the vibration and pressure borne by the second hydraulic unit. Furthermore, this device, aided by the overall structure of the first hydraulic unit and in conjunction with the positioning plate and vertical plate, provides a second fixation for the second hydraulic unit, ensuring reliable support for the vehicle even if the first hydraulic unit fails. This avoids dangerous situations caused by lack of support and provides strong assurance for the continuity and safety of operations.

[0019] 3. The present invention also designs hydraulic actuators No. 1 and No. 2. In the enhanced mode, the control system synchronously supplies oil to hydraulic actuators No. 1 and No. 2, and the two extend in coordination. At this time, the vertical plate and gear move down synchronously, and the two synchronously complete the supporting action of the vehicle body. This design enables the vehicle to adapt to various complex and harsh working environments, such as strong winds and soft soil foundations, effectively preventing the vehicle from being dangerous due to insufficient support, and further improving the safety of operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the hydraulic mechanism structure of the present invention; Figure 2 This is a schematic diagram of the connection component structure of the present invention; Figure 3 This is a schematic diagram of the conveying component structure of the present invention; Figure 4 This is a schematic cross-sectional view of the pressure assembly of the present invention; Figure 5 This is a schematic diagram of the adjustment component structure of the present invention; Figure 6 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the control system module of the present invention.

[0021] Explanation of the labels in the diagram: 1. Vehicle mechanism; 2. Hydraulic mechanism; 11. Vehicle body; 12. Control system; 13. Connecting components; 21. Hydraulic Unit No. 1; 22. Mounting Components; 23. Adjustment Components; 24. Transmission Components; 25. Pressure Components; 26. Conveying Components; 27. Control Components; 28. Hydraulic Unit No. 2; 121. Hydraulic oil tank; 122. Steering pump; 123. Directional control valve; 124. Safety valve; 125. Hydraulic spring; 126. Control valve assembly; 131. Rear bumper; 132. Limiting groove; 133. Limiting rod; 221. Positioning plate; 222. No. 1 elastic telescopic rod; 231. Vertical plate; 232. Tooth block; 233. Limiting tooth; 234. Mounting groove; 235. No. 2 elastic telescopic rod; 236. Connecting rod; 237. Base plate; 241. Gear; 242. Drive rod; 243. Turntable; 244. Rotator No. 1; 245. Lever; 251. Sealing sleeve; 252. Sealing plate; 253. Check valve; 254. Bracket; 255. Rotator No. 2; 256. Base; 257. Mounting plate; 261. Connecting pipe; 262. Butt joint pipe; 263. Positioning bracket; 264. Regulating valve; 265. Telescopic pipe; 266. Limiting block; 271. Sealing cylinder; 272. Isolation plate; 273. No. 3 elastic telescopic rod; 274. Cage. Detailed Implementation

[0022] like Figures 1 to 7 As shown in the figure, the present invention relates to a hydraulic system and method for use in special vehicles, comprising a vehicle mechanism 1 and a hydraulic mechanism 2, wherein the vehicle mechanism 1 and the hydraulic mechanism 2 are connected. Vehicle mechanism 1 includes a vehicle body 11, a control system 12 disposed within the vehicle body 11, and a connecting assembly 13, wherein the connecting assembly 13 is located at the rear of the vehicle body 11. Hydraulic mechanism 2 includes two primary hydraulic actuators 21, two mounting assemblies 22 connected to the primary hydraulic actuators 21, two adjusting assemblies 23 connected to the mounting assemblies 22, a transmission assembly 24, a pressure assembly 25, two conveying assemblies 26 connected to the pressure assembly 25, and two secondary hydraulic actuators 28. The transmission assembly 24 is connected to the adjusting assembly 23 and the pressure assembly 25, and the secondary hydraulic actuators 28 are connected to the vehicle body 11. The conveying assembly 26 is connected to the control assembly 27. Hydraulic unit 21 provides regular support for the vehicle body 11, while hydraulic unit 28 provides support for the vehicle body 11 in case hydraulic unit 21 fails. Adjustment assembly 23 and transmission assembly 24 reinforce the connection between hydraulic units 21 and 28. Pressure assembly 25 reinforces the connection between pressure assembly 25 and adjustment assembly 23. Through the design of adjustment assembly 23, control system 12, and pressure assembly 25, hydraulic unit 21 supports the vehicle body 11. When hydraulic unit 21 extends, it will pass through mounting plate 257 and elastic telescopic rod 222. The vertical plate 231 is moved downwards. At this time, the vertical plate 231 drives the gear 241 to rotate through the toothed blocks 232 on its surface. During the rotation, the gear 241 pushes the sealing plate 252 to slide inside the sealing sleeve 251 through the lever 245. The one-way valve 253 draws in the outside gas and injects the gas into the sealing cylinder 271. The gas accumulates in the sealing cylinder 271 and squeezes the isolation plate 272. When the first hydraulic device 21 extends to its limit position, that is, the height of the vehicle body 11 from the ground, the pressure accumulation in the sealing cylinder 271 will push the isolation plate 272 to slide into the sealing cylinder 271, so that a large amount of gas will quickly slide along the sealing cylinder 271. The fluid is discharged into the telescopic tube 265, which pushes the telescopic tube 265 to extend and squeeze the limiting block 266 into the space between two adjacent limiting teeth 233. This allows the second hydraulic unit 28 to complete the double locking of the first hydraulic unit 21, ensuring that the support structure remains stable under dynamic loads. This reduces the probability of safety accidents such as vehicle shaking and overturning caused by unstable support, and protects the safety of operators and equipment. If one hydraulic unit fails, the other hydraulic unit can be put into use immediately to ensure the normal operation of the vehicle support function. This greatly improves the reliability and fault tolerance of the entire support system and reduces work interruptions and delays caused by support system failures.

[0023] In an embodiment of the present invention, the vehicle body 11 is fixedly connected to the control system 12, the rear of the vehicle body 11 is fixedly connected to the connecting assembly 13, the rear of the vehicle body 11 is fixedly connected to two first hydraulic actuators 21, the rear of the vehicle body 11 is fixedly connected to a second hydraulic actuator 28, the first hydraulic actuator 21 is fixedly connected to the mounting assembly 22, one side of the mounting assembly 22 is fixedly connected to the adjusting assembly 23, the adjusting assembly 23 engages with the transmission assembly 24, the outer wall of the adjusting assembly 23 overlaps with the pressure assembly 25, and the transmission assembly 24... 4 is snapped into the pressure assembly 25, which is connected to the conveying assembly 26. The conveying assembly 26 is connected to the control assembly 27, which is snapped into the outside of the adjusting assembly 23. The lower part of the pressure assembly 25 is fixedly connected to the second hydraulic unit 28. By designing the second hydraulic unit 28, the adjusting assembly 23, the transmission assembly 24, and the pressure assembly 25, when the first hydraulic unit 21 is damaged, the control system 12 automatically switches to the standby mode, and hydraulic oil is introduced into the second hydraulic unit 28 to extend it. Due to the mounting plate 257 and the second hydraulic unit 28... The hydraulic actuator 28 is synchronously connected, causing the mounting plate 257 to move downwards, which in turn causes the base plate 237 to move downwards. This allows the base plate 237 to synchronously pull the second elastic telescopic rod 235 to extend via the connecting rod 236. Meanwhile, the gear 241 rolls on the surface of the toothed block 232. Because the gear 241 disengages from the toothed block 232 early, the pressure is insufficient to extend the telescopic tube 265. Therefore, the second hydraulic actuator 28 can move downwards stably, providing support for the vehicle body 11. Furthermore, the base plate 237 fits precisely under the pull of the second elastic telescopic rod 235. This allows the No. 1 hydraulic unit 21 to reinforce the support of the No. 2 hydraulic unit 28 through the positioning plate 221 and the vertical plate 231, and absorb some of the vibration and pressure borne by the No. 2 hydraulic unit 28. In addition, the device uses the overall structure of the No. 1 hydraulic unit 21 as an aid, and works with the positioning plate 221 and the vertical plate 231 to fix the No. 2 hydraulic unit 28 a second time, ensuring that the vehicle can still obtain reliable support in the event of failure of the No. 1 hydraulic unit 21, avoiding dangerous situations caused by lack of support, and providing strong protection for the continuity and safety of the operation.

[0024] In an embodiment of the present invention, the control system 12 includes a hydraulic oil tank 121, which is connected to a steering pump 122. The other end of the steering pump 122 is connected to a directional control valve 123, and the other end of the directional control valve 123 is connected to a safety valve 124. The safety valve 124 is connected to two pneumatic springs 125, and the two pneumatic springs 125 are connected to two control valve groups 126. The outlets of both control valve groups 126 are connected to the hydraulic oil tank 121. The hydraulic oil tank 121 is fixedly connected to the vehicle body 11. The two pneumatic springs 125 and the control valve groups 126 are respectively connected to a first hydraulic actuator 21 and a second hydraulic actuator 2. 8. The connection component 13 includes a rear baffle 131. A limiting groove 132 is provided at the rear of the rear baffle 131. A limiting rod 133 is slidably connected in the limiting groove 132. The rear baffle 131 is fixedly connected to the rear of the vehicle body 11. The other end of the limiting rod 133 is fixedly connected to the adjustment component 23. The improved oil circuit system can automatically switch the support mode according to different working conditions. The operator does not need to perform complicated operations and adjustments to make the vehicle adapt to various working conditions. This flexibility and convenience enable special operation vehicles to complete different types of tasks more efficiently, improving the flexibility and adaptability of operations.

[0025] Mounting assembly 22 includes a positioning plate 221. A first elastic telescopic rod 222 is fixedly connected to one side of the positioning plate 221, and the other end of the first elastic telescopic rod 222 is fixedly connected to one side of the adjusting assembly 23. The positioning plate 221 is fixedly connected to the outside of the first hydraulic unit 21. The adjusting assembly 23 includes a vertical plate 231. Several toothed blocks 232 are fixedly connected to one side of the vertical plate 231, and several limiting teeth 233 are fixedly connected to the other side of the vertical plate 231. An installation groove 234 is opened on the front of the vertical plate 231, and a second elastic telescopic rod 235 is fixedly connected to the upper part of the inner wall of the installation groove 234. A connecting rod 236 is fixedly connected to the bottom of 235, and a base plate 237 is fixedly connected to the bottom of the connecting rod 236. The top of the base plate 237 overlaps with the bottom of the vertical plate 231, and the rear of the vertical plate 231 is fixedly connected to one end of the first elastic telescopic rod 222. The transmission component 24 meshes with the toothed block 232. After the first hydraulic device 21 is normally supported and fixed, the installation structure can automatically fix it, reducing the workload and time of manual operation, improving the convenience and efficiency of operation. At the same time, automatic fixing also ensures the accuracy and reliability of fixing, avoiding the problem of loose fixing caused by improper manual operation.

[0026] In another embodiment of the present invention, the transmission assembly 24 includes a gear 241. A drive rod 242 is fixedly connected to one side of the gear 241, and a turntable 243 is fixedly connected to the other end of the drive rod 242. A first rotator 244 is snapped onto the outside of the turntable 243. A lever 245 is fixedly connected to the outside of the first rotator 244, and the other end of the lever 245 is fixedly connected to the pressure assembly 25. The turntable 243 is located inside the pressure assembly 25. The gear 241 meshes with several tooth blocks 232. The pressure assembly 25 includes a sealing sleeve 251. A sealing plate 252 is slidably connected inside the sealing sleeve 251. Two one-way valves 253 are provided on one side of the sealing plate 252, and a second rotator 25 is snapped onto one side of the sealing plate 252 via a bracket 254. 5. A base 256 is fixedly connected to the lower part of the sealing sleeve 251, and a mounting plate 257 is fixedly connected to the lower part of the base 256. One side of the mounting plate 257 is located above the base plate 237, and the other side of the mounting plate 257 is fixedly connected to the outside of the second hydraulic unit 28. The other end of the lever 245 is fixedly connected to the outside of the second rotator 255. Both the first rotator 244 and the second rotator 255 include bearings and shafts. Through flexible switching and coordinated work of various support conditions, the vehicle can maintain a stable support state under different working conditions, providing continuous and reliable support for special operations. Whether in normal operation, hydraulic unit failure or harsh environmental conditions, it can ensure the smooth progress of the operation and improve the efficiency and success rate of the operation.

[0027] In another embodiment of the present invention, the conveying assembly 26 includes a connecting pipe 261, the other end of which is connected to a connecting pipe 262. A positioning frame 263 is fixedly connected to the outside of the connecting pipe 262. The connecting pipe 262 is connected to a regulating valve 264 via a control assembly 27. The other end of the regulating valve 264 is connected to a telescopic pipe 265. A limit block 266 is fixedly connected to the other end of the telescopic pipe 265. The positioning frame 263 is slidably connected to one side of the vertical plate 231. The position of the limit block 266 is adapted to the shape between two adjacent limit teeth 233. The control assembly 27 includes a sealing cylinder 271. The sealing cylinder 271 has tapered ends. An isolation plate 272 is internally connected to the isolation plate 272. A third elastic telescopic rod 273 is fixedly connected to one side of the isolation plate 272. A retainer 274 is fixedly connected to the outside of the third elastic telescopic rod 273. The retainer 274 is fixedly connected inside the sealing cylinder 271. The two ends of the sealing cylinder 271 are respectively connected to the regulating valve 264 and the connecting pipe 262. Because the improved system has emergency failure and reinforced support functions, it can effectively avoid damage to other parts of the vehicle caused by unstable support or insufficient support force. It can effectively prevent the vehicle from impacting and damaging the working equipment and vehicle body structure due to shaking or overturning, reduce the failure rate and maintenance cost of the equipment, and improve the overall economy of the equipment.

[0028] Working Principle: This embodiment provides a hydraulic system and method for special vehicles. During use, the control system 12 needs to be adjusted according to the usage conditions. In normal operating mode, the first hydraulic unit 21 supports the vehicle body 11. When the first hydraulic unit 21 extends, it drives the vertical plate 231 downwards via the mounting plate 257 and the first elastic telescopic rod 222. At this time, the vertical plate 231 drives the gear 241 to rotate via the toothed blocks 232 on its surface. During rotation, the gear 241 reciprocates through the lever 245 to push the sealing plate 252 in a sealed manner. The sleeve 251 slides inside, drawing in external gas through the one-way valve 253 and injecting the gas into the sealing cylinder 271, causing the gas to accumulate in the sealing cylinder 271 and compress the isolation plate 272. When the first hydraulic device 21 extends to its limit position and the height of the vehicle body 11 from the ground, the pressure accumulation in the sealing cylinder 271 will push the isolation plate 272 to slide into the sealing cylinder 271, causing a large amount of gas to be quickly discharged along the sealing cylinder 271 into the telescopic tube 265, thereby pushing the telescopic tube 265 to extend and compress the limiting block 266 to engage between two adjacent limiting teeth 233. When the first hydraulic unit 21 is damaged, the control system 12 automatically switches to the standby mode. Hydraulic oil is introduced into the second hydraulic unit 28 to extend it. Since the mounting plate 257 is synchronously connected to the second hydraulic unit 28, when the mounting plate 257 moves down, it drives the base plate 237 to move down. This causes the base plate 237 to synchronously pull the second elastic telescopic rod 235 to extend through the connecting rod 236. The gear 241 will roll on the surface of the tooth block 232. However, since the gear 241 disengages from the tooth block 232 early, the pressure is insufficient to drive the telescopic tube 265 to extend. Therefore, the second hydraulic unit 28 can move down stably to support the vehicle body 11. The base plate 237 fits precisely under the action of the second elastic telescopic rod 235 pulling away. In the enhanced mode, the control system 12 simultaneously supplies oil to the first hydraulic unit 21 and the second hydraulic unit 28, and the two extend in coordination. At this time, the vertical plate 231 and the gear 241 move down synchronously, and the two simultaneously complete the supporting action on the vehicle body 11.

[0029] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A hydraulic system for use in special vehicles, characterized in that, It includes a vehicle mechanism (1) and a hydraulic mechanism (2), wherein the vehicle mechanism (1) is connected to the hydraulic mechanism (2); The vehicle mechanism (1) includes a vehicle body (11), a control system (12) disposed within the vehicle body (11), and a connection component (13), wherein the connection component (13) is located behind the vehicle body (11); The hydraulic mechanism (2) includes two No. 1 hydraulic units (21), two mounting components (22) connected to the two No. 1 hydraulic units (21), two adjusting components (23) connected to the two mounting components (22), a transmission component (24), a pressure component (25), two conveying components (26) connected to the pressure component (25), and two No. 2 hydraulic units (28). The transmission component (24) is connected to the adjusting component (23), the transmission component (24) is connected to the pressure component (25), the No. 2 hydraulic unit (28) is connected to the vehicle body (11), and the conveying component (26) is connected to the control component (27). The first hydraulic unit (21) is used for the regular support of the vehicle body (11), the second hydraulic unit (28) is used to support the vehicle body (11) when the first hydraulic unit (21) is damaged, the adjustment component (23) and the transmission component (24) are used to strengthen the connection between the first hydraulic unit (21) and the second hydraulic unit (28), and the pressure component (25) is used to strengthen the connection between the pressure component (25) and the adjustment component (23).

2. The hydraulic system for special vehicles according to claim 1, characterized in that, The vehicle body (11) is fixedly connected to the control system (12), and the rear of the vehicle body (11) is fixedly connected to the connecting assembly (13). The rear of the vehicle body (11) is fixedly connected to two No. 1 hydraulic units (21), and the rear of the vehicle body (11) is fixedly connected to a No. 2 hydraulic unit (28).

3. The hydraulic system for special vehicles according to claim 2, characterized in that, The first hydraulic unit (21) is fixedly connected to the mounting assembly (22). One side of the mounting assembly (22) is fixedly connected to the adjusting assembly (23). The adjusting assembly (23) is engaged with the transmission assembly (24). The outer wall of the adjusting assembly (23) overlaps with the pressure assembly (25). The transmission assembly (24) is snapped into the pressure assembly (25). The pressure assembly (25) is connected to the conveying assembly (26). The conveying assembly (26) is connected to the control assembly (27). The control assembly (27) is snapped into the outside of the adjusting assembly (23). The lower part of the pressure assembly (25) is fixedly connected to the second hydraulic unit (28).

4. The hydraulic system for special vehicles according to claim 3, characterized in that, The control system (12) includes a hydraulic oil tank (121), which is connected to a steering pump (122). The other end of the steering pump (122) is connected to a reversing valve (123). The other end of the reversing valve (123) is connected to a safety valve (124). The safety valve (124) is connected to two pneumatic springs (125). The two pneumatic springs (125) are connected to two control valve groups (126). The outlets of the two control valve groups (126) are connected to the hydraulic oil tank (121). The hydraulic oil tank (121) is fixedly connected to the vehicle body (11), and the two oil springs (125) and the control valve group (126) are respectively connected to the first hydraulic unit (21) and the second hydraulic unit (28). The connecting component (13) includes a rear panel (131), a limiting groove (132) is provided at the rear of the rear panel (131), and a limiting rod (133) is slidably connected in the limiting groove (132). The rear baffle (131) is fixedly connected to the rear of the vehicle body (11), and the other end of the limiting rod (133) is fixedly connected to the adjustment assembly (23).

5. The hydraulic system for special vehicles according to claim 4, characterized in that, The installation assembly (22) includes a positioning plate (221), and a first elastic telescopic rod (222) is fixedly connected to one side of the positioning plate (221). The other end of the first elastic telescopic rod (222) is fixedly connected to one side of the adjustment assembly (23), and the positioning plate (221) is fixedly connected to the outside of the first hydraulic device (21); The adjustment component (23) includes a vertical plate (231), a plurality of toothed blocks (232) are fixedly connected to one side of the vertical plate (231), a plurality of limiting teeth (233) are fixedly connected to the other side of the vertical plate (231), an installation groove (234) is provided on the front of the vertical plate (231), a second elastic telescopic rod (235) is fixedly connected to the upper part of the inner wall of the installation groove (234), a connecting rod (236) is fixedly connected to the bottom end of the second elastic telescopic rod (235), a base plate (237) is fixedly connected to the bottom end of the connecting rod (236), and the upper part of the base plate (237) overlaps with the lower part of the vertical plate (231). The rear of the vertical plate (231) is fixedly connected to one end of the first elastic telescopic rod (222), and the transmission component (24) meshes with the toothed block (232).

6. The hydraulic system for special vehicles according to claim 5, characterized in that, The transmission assembly (24) includes a gear (241), a drive rod (242) is fixedly connected to one side of the gear (241), a turntable (243) is fixedly connected to the other end of the drive rod (242), a first rotator (244) is snapped onto the outside of the turntable (243), and a lever (245) is fixedly connected to the outside of the first rotator (244). The other end of the lever (245) is fixedly connected to the pressure assembly (25), the turntable (243) is located inside the pressure assembly (25), and the gear (241) meshes with several tooth blocks (232).

7. The hydraulic system for special vehicles according to claim 6, characterized in that, The pressure assembly (25) includes a sealing sleeve (251), a sealing plate (252) is slidably connected inside the sealing sleeve (251), two one-way valves (253) are provided on one side of the sealing plate (252), a second rotator (255) is snapped onto one side of the sealing plate (252) by a bracket (254), a base (256) is fixedly connected to the bottom of the sealing sleeve (251), and an mounting plate (257) is fixedly connected to the bottom of the base (256). One side of the mounting plate (257) is located above the base plate (237), and the other side of the mounting plate (257) is fixedly connected to the outside of the second hydraulic unit (28). The other end of the lever (245) is fixedly connected to the outside of the second rotator (255). Both the first rotator (244) and the second rotator (255) include bearings and shafts.

8. The hydraulic system for special vehicles according to claim 7, characterized in that, The conveying assembly (26) includes a connecting pipe (261), the other end of which is connected to a connecting pipe (262), and a positioning frame (263) is fixedly connected to the outside of the connecting pipe (262). The connecting pipe (262) is connected to the regulating valve (264) via the control component (27). The other end of the regulating valve (264) is connected to the telescopic pipe (265). The other end of the telescopic pipe (265) is fixedly connected to the limiting block (266). The positioning frame (263) is slidably connected to one side of the vertical plate (231). The position of the limiting block (266) is adapted to the shape between two adjacent limiting teeth (233).

9. The hydraulic system for special vehicles according to claim 8, characterized in that, The control component (27) includes a sealing cylinder (271), which has a tapered design at both ends. An isolation plate (272) is snapped into the sealing cylinder (271). A third elastic telescopic rod (273) is fixedly connected to one side of the isolation plate (272). A retainer (274) is fixedly connected to the outside of the third elastic telescopic rod (273). The retainer (274) is fixedly connected inside the sealing cylinder (271). The two ends of the sealing cylinder (271) are connected to the regulating valve (264) and the connecting pipe (262), respectively.

10. A method of using a hydraulic system for special vehicles, as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Hydraulic oil is injected into the No. 1 hydraulic unit (21) through the control system (12), and the No. 1 hydraulic unit (21) extends to support the vehicle body (11). S2. In normal use mode, the No. 1 hydraulic unit (21) supports the vehicle body (11). When the No. 1 hydraulic unit (21) is damaged, the backup mode is activated. The hydraulic oil is injected into the No. 2 hydraulic unit (28) through the control system (12). The No. 2 hydraulic unit (28) supports the vehicle body (11). When used in special environments, the reinforcement mode is activated. The hydraulic oil is injected into the No. 1 hydraulic unit (21) and the No. 2 hydraulic unit (28) simultaneously through the control system (12), so that the two work together to improve the support stability and load-bearing capacity.

Images