CN216767909U - Hydraulic system of guardrail breakdown van - Google Patents
Hydraulic system of guardrail breakdown van Download PDFInfo
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- CN216767909U CN216767909U CN202122372251.0U CN202122372251U CN216767909U CN 216767909 U CN216767909 U CN 216767909U CN 202122372251 U CN202122372251 U CN 202122372251U CN 216767909 U CN216767909 U CN 216767909U
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Abstract
The utility model relates to a hydraulic system of guardrail breakdown van, belong to construction machinery hydraulic system's field, including first hydraulic system part, first hydraulic system part includes first hydraulic pump, first electromagnetic reversing valves with first hydraulic pump connection and the first electromagnetic overflow valve of the parallelly connected setting of first electromagnetic reversing valves, first electromagnetic reversing valves includes pile electromagnetic reversing valve and manual pile switching-over valve, the oil-out of first hydraulic pump is connected with the oil inlet of pile electromagnetic reversing valve, an oil-out of pile electromagnetic reversing valve is connected with the oil inlet of manual pile switching-over valve, its another oil-out communicates with the oil return mouth of hydraulic hammer and hydraulic drill respectively, one of them oil-out of manual pile switching-over valve is connected with the oil inlet of hydraulic hammer, another oil-out is connected with the oil inlet of hydraulic drill. The hydraulic system has simple oil circuit and lower manufacturing cost, and is convenient for the operation of workers while ensuring the working pressure requirements of the hydraulic hammer and the hydraulic drill.
Description
Technical Field
The application relates to the field of hydraulic systems of construction machinery, in particular to a hydraulic system of a guardrail breakdown van.
Background
A guardrail breakdown van is a device for implanting or extracting a road guardrail into or from a road surface.
In the related art, referring to fig. 1, a guardrail breakdown van includes a body 710, and a breakdown device provided to the body 710, the breakdown device including a hydraulic system and a plurality of actuating elements controlled by the hydraulic system. The action member includes a support leg vertically provided at the vehicle body 710 for supporting the vehicle body 710, the support leg being controlled to be extended and retracted by a hydraulic system so that the vehicle body 710 is kept stable. The first-aid repair device further comprises a pair of support slide rails 730 arranged along the width direction of the vehicle body 710, the action element further comprises a support 740 arranged at the support slide rails 730 in a sliding mode along the length direction of the support slide rails 730, a large arm 750 is rotatably connected at the support 740, one end of the large arm 750 is hinged to a guide rail 760, and the guide rail 760 is provided with a working hammer 770 acting on the guardrail in a sliding mode along the length direction of the guide rail 760.
The hydraulic system can control the support 740 to move along the length direction of the support slide rail 730 to adjust the position of the support 740, the support 740 can axially rotate under the action of the hydraulic system, so that the large arm 750 drives the guide rail 760 to move to a proper working position, the working height of the large arm 750 can be controlled through the hydraulic system, and meanwhile, the included angle between the guide rail 760 and the large arm 750 can be controlled, so that the guide rail 760 is in a vertical state, a horizontal state and the like. In operation, the guide rail 760 is in a vertical state, and the working hammer 770 acts on the guardrail under the control of the hydraulic system, so that the guardrail is implanted into the ground.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: guardrail breakdown van often needs to bore at ground through hydraulic drill at the during operation to ground is implanted to later guardrail, but because breakdown van's hydraulic system often is multiple unit valve control, the multiple unit valve control cost is expensive, control system is complicated and then difficult to add hydraulic drill.
SUMMERY OF THE UTILITY MODEL
In order to add the hydraulic drill, reduce the hydraulic system cost of guardrail breakdown van and reduce the problem of control system complexity simultaneously, this application provides a hydraulic system of guardrail breakdown van.
The application provides a pair of hydraulic system of guardrail breakdown van adopts following technical scheme:
the utility model provides a hydraulic system of guardrail breakdown van, including first hydraulic system part, first hydraulic system part includes first hydraulic pump, the first electromagnetic reversing valves of being connected with first hydraulic pump and the first electromagnetic overflow valve that sets up with first electromagnetic reversing valves parallelly connected, first electromagnetic reversing valves includes pile electromagnetic reversing valve and manual pile reversing valve, the oil-out of first hydraulic pump is connected with the oil inlet of pile electromagnetic reversing valve, an oil-out of pile electromagnetic reversing valve is connected with the oil inlet of manual pile reversing valve, its another oil-out communicates with the oil return mouth of hydraulic hammer and hydraulic drill respectively, the oil return mouth of pile electromagnetic reversing valve passes through oil return pipe and is connected with oil return tank, one of them oil-out of manual pile reversing valve is connected with the oil inlet of hydraulic hammer, another oil-out is connected with the oil inlet of hydraulic drill.
Through adopting above-mentioned technical scheme, first electromagnetic overflow valve can be used to adjust the whole pressure in the partial oil circuit of first hydraulic system to make the pressure that first hydraulic pump provided can satisfy the work demand that hydraulic hammer and hydraulic pressure bore. The combination of the first electromagnetic overflow valve, the manual piling reversing valve and the piling electromagnetic reversing valve can be respectively used for controlling the hydraulic hammer to act on the guardrail pile and controlling the hydraulic drill to rotate. The oil circuit of the first hydraulic system part is simple, the manufacturing cost is low, the working pressure requirements of the hydraulic hammer and the hydraulic drill are met, and meanwhile the state that workers operate the hydraulic hammer and the hydraulic drill is convenient.
Optionally, the first electromagnetic directional valve group is further connected in parallel with a large-arm lifting electromagnetic directional valve, an oil inlet of the large-arm lifting electromagnetic directional valve is communicated with the first hydraulic pump, the large-arm lifting electromagnetic directional valve is connected with a pair of large-arm lifting hydraulic cylinders, an oil outlet of the large-arm lifting electromagnetic directional valve is communicated with rod cavities of the pair of large-arm lifting hydraulic cylinders respectively, another oil outlet of the large-arm lifting electromagnetic directional valve is communicated with rodless cavities of the large-arm lifting hydraulic cylinders respectively, and an oil return port of the large-arm lifting electromagnetic directional valve is connected with an oil return tank.
By adopting the technical scheme, the large arm lifting electromagnetic directional valve is adjusted, and when oil enters the rod cavity of the large arm lifting hydraulic cylinder, the piston rod of the large arm lifting hydraulic cylinder contracts simultaneously. When the rodless cavity of the large-arm lifting hydraulic cylinder takes oil, the piston rod of the large-arm lifting hydraulic cylinder stretches simultaneously.
Optionally, the hydraulic system of guardrail breakdown van still includes the second hydraulic system part, the second hydraulic system part includes second hydraulic pump, second electromagnetic overflow valve and second electromagnetic directional valve group, and the oil-out and the second electromagnetic overflow valve intercommunication of second hydraulic pump, and the parallelly connected setting of second electromagnetic overflow valve and second electromagnetic directional valve group, second electromagnetic directional valve group is including swing gyration electromagnetic directional valve, swing gyration electromagnetic directional valve is connected with swing gyration hydraulic cylinder, the oil-out and the oil inlet of swing gyration electromagnetic directional valve of second hydraulic pump are connected, the oil-out and the oil pocket intercommunication of swing gyration electromagnetic directional valve of gyration electromagnetic directional valve, the oil return opening and the oil return tank of swing gyration electromagnetic directional valve are connected.
Through adopting above-mentioned technical scheme, when the second hydraulic pump oil, the setting of second electromagnetic relief valve can be used to the overall pressure of governing system to ensure that system's pressure keeps stable, play safety protection's effect to the system simultaneously. The arrangement of the swing rotary electromagnetic reversing valve can be used for controlling the forward rotation, the reverse rotation and the locking of the swing rotary hydraulic cylinder, and therefore the convenience for operating the swing rotary hydraulic cylinder by workers is improved.
Optionally, the second electromagnetic directional valve set further includes a guide rail supination electromagnetic directional valve, the guide rail supination electromagnetic directional valve is connected with a guide rail supination hydraulic cylinder, an oil inlet of the guide rail supination electromagnetic directional valve is connected with an oil outlet of the second hydraulic pump, one oil outlet of the guide rail supination electromagnetic directional valve is connected with a rod cavity of the guide rail supination hydraulic cylinder, the other oil outlet of the guide rail supination electromagnetic directional valve is communicated with a rodless cavity of the guide rail supination hydraulic cylinder, and an oil return port of the guide rail supination electromagnetic directional valve is connected with an oil return tank.
By adopting the technical scheme, the working personnel can flexibly control the oil inlet and outlet conditions of each chamber of the guide rail supination hydraulic cylinder through the guide rail supination electromagnetic directional valve, so that the working state of the guide rail supination hydraulic cylinder can be conveniently controlled by the working personnel. When the guide rail supine electromagnetic directional valve controls the guide rail supine hydraulic cylinder to feed oil into the rod cavity, the guide rail supine hydraulic cylinder is contracted. When the guide rail supination electromagnetic directional valve controls the rodless cavity of the guide rail supination hydraulic cylinder to feed oil, the piston rod of the guide rail supination hydraulic cylinder stretches.
Optionally, the second electromagnetic directional valve set further comprises a hammer drill lifting electromagnetic directional valve and a pile pulling ground supporting electromagnetic directional valve, oil inlets of the hammer drill lifting electromagnetic directional valve and the pile pulling ground supporting electromagnetic directional valve are both connected with an oil outlet of the second hydraulic pump, an oil outlet of the hammer drill lifting electromagnetic directional valve is connected with a hammer drill lifting hydraulic cylinder, and an oil outlet of the pile pulling ground supporting electromagnetic directional valve is connected with a pile pulling ground supporting hydraulic cylinder.
By adopting the technical scheme, the hammer drill lifting electromagnetic directional valve can facilitate workers to flexibly control the oil inlet and outlet conditions in each cavity in the hammer drill lifting hydraulic cylinder so as to control the working height of the hammer drill. When the hammer drill lifting electromagnetic directional valve controls oil inlet of a rod cavity of the hammer drill lifting hydraulic cylinder, a piston rod of the hammer drill lifting hydraulic cylinder contracts. When the hammer drill lifting electromagnetic directional valve controls the rodless cavity of the hammer drill lifting hydraulic cylinder to feed oil, the piston rod of the hammer drill lifting hydraulic cylinder stretches. Similarly, the pile pulling ground supporting electromagnetic directional valve can also flexibly control the oil inlet and outlet conditions of each chamber of the pile pulling ground supporting hydraulic cylinder.
Optionally, the second electromagnetic directional valve set further includes a left front leg electromagnetic directional valve, a left rear leg electromagnetic directional valve, a right front leg electromagnetic directional valve and a right rear leg electromagnetic directional valve, which are connected to the second hydraulic pump, an oil outlet of the left front leg electromagnetic directional valve is connected to a left front leg hydraulic cylinder, the left rear leg electromagnetic directional valve is connected to a left rear leg hydraulic cylinder, the right front leg electromagnetic directional valve is connected to a right front leg hydraulic cylinder, and the right rear leg electromagnetic directional valve is connected to a right rear leg hydraulic cylinder.
By adopting the technical scheme, different hydraulic cylinders are controlled by different electromagnetic directional valves, so that the hydraulic system can flexibly adapt to different construction environments.
Optionally, the second electromagnetic directional valve set further includes a left front telescopic electromagnetic directional valve and a right front telescopic electromagnetic directional valve, oil inlets of the left front telescopic electromagnetic directional valve and the right front telescopic electromagnetic directional valve are both communicated with an oil outlet of the second hydraulic pump, an oil outlet of the left front telescopic electromagnetic directional valve is connected with a left front telescopic hydraulic cylinder for communication, and an oil outlet of the right front telescopic electromagnetic directional valve is connected with a right front telescopic hydraulic cylinder for communication.
By adopting the technical scheme, the left front telescopic electromagnetic directional valve and the right front telescopic electromagnetic directional valve are respectively arranged to be used for controlling the working states of the left front telescopic hydraulic cylinder and the right front telescopic hydraulic cylinder. Through adjusting the front left telescopic electromagnetic directional valve, the staff can control the front left telescopic hydraulic cylinder to have the rod cavity or the rodless cavity to take oil, so that the piston rod of the front left telescopic hydraulic cylinder can stretch or contract. Through adjusting right front solenoid directional valve, the staff can control the pole chamber or the pole-free chamber oil feed of telescopic hydraulic cylinder before the right side to make the piston rod of right front telescopic hydraulic cylinder stretch or contract.
Optionally, a hydraulic oil radiator and an oil return filter element are connected in the oil return path.
Through adopting above-mentioned technical scheme, hydraulic oil among the hydraulic system often can make self temperature rise at the in-process of constantly extrudeing to make its working property become unstable inadequately. The hydraulic oil radiator can play a role in cooling and radiating hydraulic oil in the oil return circuit, so that the working performance of the hydraulic oil is kept stable. When hydraulic oil runs in a hydraulic system, particle impurities, rubber impurities and the like are possibly generated due to abrasion and the like of equipment during running, the oil return filter element can filter the hydraulic oil in the oil return path, and therefore the hydraulic oil is kept clean, and the working performance of the hydraulic oil is stabilized.
To sum up, the present application includes at least one of the following beneficial technical effects:
1. arrangement of the first hydraulic system part: the first hydraulic system part comprises a first electromagnetic overflow valve, a first electromagnetic reversing valve group and a first electromagnetic overflow valve. The first electromagnetic overflow valve can be used for integrally adjusting the integral pressure in a part of oil paths of the first hydraulic system, so that the pressure provided by the first hydraulic pump can meet the working requirements of a hydraulic hammer and a hydraulic drill. The first electromagnetic reversing valve group comprises a manual piling reversing valve and a piling electromagnetic reversing valve. The combination of the manual pile driving reversing valve and the pile driving electromagnetic reversing valve can be used for controlling the hydraulic hammer to act on the guardrail pile and the hydraulic drill to rotate respectively. The first hydraulic system part has simple oil path and low manufacturing cost, and is convenient for workers to adjust and control the states of the hydraulic hammer and the hydraulic drill while ensuring the working pressure of the hydraulic hammer and the hydraulic drill;
2. setting of the second hydraulic system part: when the second hydraulic pump pumps oil, the electromagnetic overflow valve can be used for adjusting the overall pressure of the system so as to ensure that the pressure of the system is kept stable, and meanwhile, the system is protected safely. The arrangement of the swinging rotary electromagnetic reversing valve can be used for controlling the forward rotation, the reverse rotation and the locking of the swinging rotary hydraulic cylinder, so that the convenience of operating the swinging rotary hydraulic cylinder by a worker is improved;
3. the hydraulic oil radiator and the oil return filter element are arranged: the hydraulic oil in the hydraulic system tends to raise its temperature during continuous squeezing, so that its working performance becomes unstable. The hydraulic oil radiator can play a role in cooling and radiating the hydraulic oil in the oil return path, so that the working performance of the hydraulic oil is kept stable. When hydraulic oil runs in a hydraulic system, particle impurities, rubber impurities and the like are possibly generated due to abrasion and the like of equipment during running, the oil return filter element can filter the hydraulic oil in the oil return path, and therefore the hydraulic oil is kept clean, and the working performance of the hydraulic oil is stabilized.
Drawings
FIG. 1 is a related art drawing;
FIG. 2 is a general schematic diagram of a hydraulic system in an embodiment of the present application;
FIG. 3 is a schematic illustration of a portion of a first hydraulic system in an embodiment of the present application;
FIG. 4 is a schematic illustration of the hydraulic connections of the swing pivot cylinder in the second hydraulic system portion of the present example;
FIG. 5 is a schematic illustration of the hydraulic connections of the hammer drill lifting cylinder and the pile pulling and ground supporting cylinder of the second hydraulic system section in an embodiment of the present application;
FIG. 6 is a schematic illustration of the hydraulic connections of the leg solenoid directional valves of the second hydraulic system portion in an embodiment of the present application;
fig. 7 is a schematic view of hydraulic connections of the left front leg hydraulic cylinder and the right front leg hydraulic cylinder of the second hydraulic system portion in the embodiment of the present application.
Description of reference numerals: 01. a first hydraulic system portion; 02. a second hydraulic system section; 100. a first hydraulic pump; 110. a first electromagnetic spill valve; 111. a first shock-resistant pressure gauge; 120. piling an electromagnetic directional valve; 130. a manual pile driving reversing valve; 140. a hydraulic hammer; 150. hydraulic drilling; 160. a large arm lifting electromagnetic directional valve; 170. a large arm lifting hydraulic cylinder; 171. a large arm bidirectional throttle valve; 172. a large arm balance valve; 200. a second hydraulic pump; 201. a second shock-proof pressure gauge; 210. a swing rotary hydraulic cylinder; 211. a second electromagnetic spill valve; 212. a swing rotary electromagnetic directional valve; 213. a swinging and rotating bidirectional throttle valve; 214. a swing rotary balance valve; 220. a guide rail supination hydraulic cylinder; 221. the guide rail is a solenoid directional valve; 222. a guide rail supine bidirectional throttle valve; 223. a guide rail supination balance valve; 230. a hammer drill lifting hydraulic cylinder; 231. a hammer drill lifting electromagnetic directional valve; 232. a hammer drill bidirectional throttle valve; 233. a hammer drill balance valve; 234. a pressure relay; 240. pile pulling and ground supporting electromagnetic directional valves; 241. pile pulling and ground supporting bidirectional throttle valve; 242. pile pulling and ground supporting two-way hydraulic control one-way valves; 243. pile pulling and ground supporting hydraulic cylinders; 250. a left front leg hydraulic cylinder; 251. a left front leg electromagnetic directional valve; 252. a leg bidirectional throttle valve; 253. leg hydraulic control check valves; 260. a left rear leg hydraulic cylinder; 261. a left rear leg electromagnetic directional valve; 270. a right front leg hydraulic cylinder; 271. a right front leg electromagnetic directional valve; 280. a right rear leg hydraulic cylinder; 281. a right rear leg electromagnetic directional valve; 290. a left front telescopic hydraulic cylinder; 291. a left front telescopic electromagnetic directional valve; 293. a two-way throttle valve; 300. a right front telescopic hydraulic cylinder; 301. a right front telescopic electromagnetic directional valve; 400. a hydraulic oil radiator; 500. an oil return filter element; 600. a support slide rail hydraulic cylinder; 610. a support slide rail electromagnetic directional valve; 620. a support sliding rail hydraulic control one-way valve; 630. a support slide rail bidirectional throttle valve; 710. a vehicle body; 720. a support leg; 730. a support slide rail; 740. a support; 750. a large arm; 760. a guide rail; 770. a working hammer.
Detailed Description
The present application is described in further detail below with reference to figures 2-7.
The embodiment of the application discloses hydraulic system of guardrail breakdown van. Referring to fig. 2 and 3, the direction of an arrow beside an oil path in the figures indicates the flowing direction of hydraulic oil, and a hydraulic system of a guardrail breakdown van comprises a first hydraulic system part 01 and a second hydraulic system part 02. The first hydraulic system part 01 comprises a first hydraulic pump 100, a first electromagnetic overflow valve 110 connected with the first hydraulic pump 100 and a first electromagnetic directional valve group arranged in parallel with the first electromagnetic overflow valve 110. An oil outlet of the first hydraulic pump 100 is connected with an oil inlet of the first electromagnetic overflow valve 110, and an oil return port of the first electromagnetic overflow valve 110 is connected with an oil return tank through an oil return pipe. The oil return pipe is also connected with a hydraulic oil radiator 400 and an oil return filter element 500 to play a role in radiating and filtering hydraulic oil, so that the working stability of the hydraulic system is improved. The first electromagnetic overflow valve 110 is further provided with a first shock-proof pressure gauge 111 in parallel, and the first shock-proof pressure gauge 111 can facilitate the staff to know the magnitude of the system pressure generated by the first hydraulic pump 100, so that the staff can conveniently adjust the overall pressure of the first hydraulic system part 01.
The first solenoid directional valve block includes a pile solenoid directional valve 120 and a manual pile directional valve 130. The pile solenoid directional valve 120 and the manual pile driver directional valve 130 are both connected to actuators, which include a hydraulic hammer 140 and a hydraulic drill 150. The piling electromagnetic directional valve 120 is a three-position four-way electromagnetic directional valve with a Y-shaped neutral function, an oil outlet of the first hydraulic pump 100 is connected with an oil inlet of the piling electromagnetic directional valve 120, an oil outlet of the piling electromagnetic directional valve 120 is connected with an oil inlet of the manual piling directional valve 130, the other oil outlet of the piling electromagnetic directional valve 120 is respectively communicated with oil return ports of the hydraulic hammer 140 and the hydraulic drill 150, and an oil return port of the piling electromagnetic directional valve 120 is connected with an oil return tank through an oil return pipe. One oil outlet of the manual piling reversing valve 130 is connected with an oil inlet of the hydraulic hammer 140, and the other oil outlet of the manual piling reversing valve is connected with an oil inlet of the hydraulic drill 150.
When the first hydraulic pump 100 pumps oil, the first electromagnetic overflow valve 110, the pile driving electromagnetic directional valve 120 and the manual pile driving directional valve 130 can jointly control the operation of the hydraulic hammer 140 and the hydraulic drill 150, and enable the hydraulic hammer 140 and the hydraulic drill 150 to meet the working pressure. The pressure of the first hydraulic system part 01 is regulated by the first electromagnetic spill valve 110, and when the pile driving electromagnetic directional valve 120 is in the neutral position, the hydraulic hammer 140 and the hydraulic drill 150 are not operated. When the pile driving electromagnetic directional valve 120 and the manual pile driving directional valve 130 are both in the left position, the hydraulic hammer 140 does not operate, and the hydraulic drill 150 rotates in the reverse direction. When the pile driving electromagnetic directional valve 120 is in the left position and the manual pile driving directional valve 130 is in the right position, the hydraulic hammer 140 is contracted and the hydraulic drill 150 does not work. When the pile driving electromagnetic directional valve 120 and the manual pile driving directional valve 130 are both in the right position, the hydraulic hammer 140 is operated, and the hydraulic drill 150 is not operated. When the pile driving electromagnetic directional valve 120 is in the right position and the manual pile driving directional valve 130 is in the left position, the hydraulic drill 150 rotates in the forward direction, and the hydraulic hammer 140 does not operate.
The first electromagnetic directional valve set further comprises a large arm lifting electromagnetic directional valve 160, and the large arm lifting electromagnetic directional valve 160 is a three-position four-way electromagnetic directional valve with a Y-shaped middle position function. The oil inlet of the large-arm lifting electromagnetic directional valve 160 is communicated with the oil outlet of the first hydraulic pump 100, the oil outlet of the large-arm lifting electromagnetic directional valve 160 is connected with a large-arm oil cylinder group, the large-arm oil cylinder group comprises a pair of large-arm lifting hydraulic cylinders 170, and the large-arm lifting hydraulic cylinders 170 are used for controlling the lifting or descending of the large arms of the breakdown van. The pair of large arm lifting hydraulic cylinders 170 are mutually connected in parallel, one oil outlet of the large arm lifting electromagnetic directional valve 160 is respectively communicated with the rod cavities of the pair of large arm lifting hydraulic cylinders 170, the other oil outlet of the large arm lifting electromagnetic directional valve 160 is respectively communicated with the rodless cavity of the large arm lifting hydraulic cylinder 170, and an oil return port of the large arm lifting electromagnetic directional valve 160 is connected with an oil return tank through a pipeline.
When the boom raising/lowering electromagnetic directional valve 160 is in the neutral position, the piston rod of the boom raising/lowering hydraulic cylinder 170 is in the locked state, and the position height of the boom is fixed. When the big arm lifting electromagnetic directional valve 160 is in the left position, the rodless cavity of the big arm lifting hydraulic cylinder 170 takes oil, and the piston rod of the big arm lifting hydraulic cylinder 170 stretches, so that the function of lifting and stretching the big arm is realized. When the large arm lifting electromagnetic directional valve 160 is in the right position, oil is fed into the rod cavity of the large arm lifting hydraulic cylinder 170, and the piston rod of the large arm lifting hydraulic cylinder 170 contracts, so that the large arm descending function is realized. In order to improve the operation stability of the boom raising/lowering hydraulic cylinder 170, a boom bidirectional throttle valve 171 and a pair of boom balance valves 172 are connected between the boom raising/lowering electromagnetic directional valve 160 and the boom cylinder group.
Referring to fig. 4, the hydraulic system of the guardrail emergency repair vehicle further comprises a second hydraulic system part 02, wherein the second hydraulic system part 02 comprises a second hydraulic pump 200, a second electromagnetic overflow valve 211 communicated with the second hydraulic pump 200 and a second electromagnetic directional valve set. An oil outlet of the second hydraulic pump 200 is connected and communicated with an oil inlet of a second electromagnetic overflow valve 211, and an oil return port of the second electromagnetic overflow valve 211 is connected with an oil return tank through an oil return pipe. The second electromagnetic overflow valve 211 is also connected in parallel with a second shock-resistant pressure gauge 201, so that the working personnel can know the hydraulic pressure in the loop. The second electromagnetic overflow valve 211 is connected in parallel with a second electromagnetic directional valve set, the second electromagnetic directional valve set comprises a swing rotary electromagnetic directional valve 212, the swing rotary electromagnetic directional valve 212 is a three-position four-way electromagnetic directional valve with a Y-shaped middle position function, the swing rotary electromagnetic directional valve 212 is connected with a swing rotary hydraulic cylinder 210, an oil outlet of the second hydraulic pump 200 is connected with an oil inlet of the swing rotary electromagnetic directional valve 212, an oil outlet of the swing rotary electromagnetic directional valve 212 is communicated with an oil cavity of the swing rotary hydraulic cylinder 210, and an oil return port of the swing rotary electromagnetic directional valve 212 is connected with an oil return tank.
The second electromagnetic directional valve group further comprises a guide rail supination electromagnetic directional valve 221, the guide rail supination electromagnetic directional valve 221 is a three-position four-way electromagnetic directional valve with a Y-shaped middle position function, and the guide rail supination electromagnetic directional valve 221 is connected with a guide rail supination hydraulic cylinder 220. An oil inlet of the guide rail supination electromagnetic directional valve 221 is connected with an oil outlet of the second hydraulic pump 200, one oil outlet of the guide rail supination electromagnetic directional valve 221 is connected with a rod cavity of the guide rail supination hydraulic cylinder 220, the other oil outlet of the guide rail supination electromagnetic directional valve 221 is communicated with a rod-free cavity of the guide rail supination hydraulic cylinder 220, and an oil return port of the guide rail supination electromagnetic directional valve 221 is connected with an oil return tank.
When the guide rail supination electromagnetic directional valve 221 is located at the middle position, the piston rod of the guide rail supination hydraulic cylinder 220 is in a locking state. When the guide rail supination electromagnetic directional valve 221 is in the left position, the rodless cavity of the guide rail supination hydraulic cylinder 220 is filled with oil, and the piston rod thereof is extended. When the guide rail supination electromagnetic directional valve 221 is in the right position, oil is fed into the rod cavity of the guide rail supination hydraulic cylinder 220, and the piston rod of the guide rail supination hydraulic cylinder is contracted. In order to improve the running stability of hydraulic oil in the system, a guide rail supine two-way throttle valve 222 and a guide rail supine balance valve 223 are sequentially connected between the guide rail supine electromagnetic directional valve 221 and the guide rail supine hydraulic cylinder 220.
Referring to fig. 4 and 5, the second electromagnetic directional valve set further includes a hammer drill lifting electromagnetic directional valve 231 and a pile pulling ground electromagnetic directional valve 240. The hammer drill lifting electromagnetic directional valve 231 and the pile pulling ground supporting electromagnetic directional valve are three-position four-way electromagnetic directional valves with Y-shaped middle position functions, oil inlets of the hammer drill lifting electromagnetic directional valve 231 and the pile pulling ground supporting electromagnetic directional valve 240 are both connected with an oil outlet of the second hydraulic pump 200, an oil outlet of the hammer drill lifting electromagnetic directional valve 231 is connected with a hammer drill lifting hydraulic cylinder 230, an oil outlet of the pile pulling ground supporting electromagnetic directional valve 240 is connected with a pile pulling ground supporting hydraulic cylinder 243, and oil return ports of the hammer drill lifting electromagnetic directional valve 231 and the pile pulling ground supporting electromagnetic directional valve 240 are connected with an oil return box through oil return pipes.
When the hammer drill lifting electromagnetic directional valve 231 is in the middle position, the piston rod of the hammer drill lifting hydraulic cylinder 230 is in a locking state. When the hammer drill lifting electromagnetic directional valve 231 is in the left position, oil is fed into the rodless cavity of the hammer drill lifting hydraulic cylinder 230, and the piston rod of the hammer drill lifting hydraulic cylinder 230 is extended. When the hammer drill lifting electromagnetic directional valve 231 is in the right position, oil is fed into the rod cavity of the hammer drill lifting hydraulic cylinder 230, and the piston rod of the hammer drill lifting hydraulic cylinder 230 is contracted.
A hammer drill bidirectional throttle valve 232 and a hammer drill balance valve 233 are also connected between the hammer drill lifting electromagnetic directional valve 231 and the hammer drill lifting hydraulic cylinder 230. The hammer drill bidirectional throttle valve 232 can slow down the flow rate of hydraulic oil in an oil path, and plays a certain role in protecting the working stability of a hydraulic system. Meanwhile, the hammer drill balance valve 233 may reduce a pressure difference in the oil path to adjust hydraulic balance of both sides thereof, thereby making the oil path more stable. A pressure relay 234 is connected between the hammer drill two-way throttle valve 232 and the hammer drill balance valve 233, the hydraulic hammer 140 is pressed on the guardrail pile during pile driving, when the pressure of the rod cavity of the hammer drill lifting hydraulic cylinder 230 reaches a set pressure, the hammer drill lifting electromagnetic directional valve 231 is powered off, the oil is not fed into the rod cavity any longer, and the hammer drill lifting hydraulic cylinder 230 is prevented from overturning the chassis.
The pile pulling and ground supporting hydraulic cylinder 243 can be used for supporting the ground, so that the emergency repair vehicle can keep stable during working. When the pile pulling bracing ground electromagnetic directional valve 240 is located at the middle position, neither the rod cavity nor the rodless cavity of the pile pulling bracing ground hydraulic cylinder 243 is filled with oil or is filled with oil, and the piston rod of the pile pulling bracing ground hydraulic cylinder 243 is in a locking state. When the pile pulling ground supporting electromagnetic directional valve 240 is in the left position, the rod cavity of the pile pulling ground supporting hydraulic cylinder 243 is filled with oil, and the piston rod of the pile pulling ground supporting hydraulic cylinder is contracted. When the pile pulling ground electromagnetic directional valve 240 is in the right position, the rodless cavity of the pile pulling ground hydraulic cylinder 243 is filled with oil, and the piston rod thereof is extended to support the ground. A pile pulling ground supporting two-way throttle valve 241 and a pile pulling ground supporting two-way hydraulic control one-way valve 242 are connected between the pile pulling ground supporting electromagnetic directional valve 240 and the pile pulling ground supporting hydraulic cylinder 243, so that the hydraulic oil in the oil path can run more stably.
The oil outlet of the second hydraulic pump 200 is further connected with a support slide rail hydraulic cylinder 600, and the support slide rail hydraulic cylinder 600 can control the large-arm lifting hydraulic cylinder 170 to move along the width direction of the body of the breakdown van, so that a worker can adjust the positions of the hydraulic drill 150 and the hydraulic hammer 140. A support slide rail electromagnetic directional valve 610 is connected between the second hydraulic pump 200 and the support slide rail hydraulic cylinder 600, the support slide rail electromagnetic directional valve 610 is a three-position four-way electromagnetic directional valve with a Y-shaped middle function, an oil inlet of the support slide rail electromagnetic directional valve 610 is connected with an oil outlet of the second hydraulic pump 200, one oil outlet of the support slide rail hydraulic cylinder 600 is communicated with a rod cavity of the support slide rail hydraulic cylinder 600, and the other oil outlet of the support slide rail hydraulic cylinder 600 is communicated with a rodless cavity of the support slide rail hydraulic cylinder 600. In order to improve the running stability of hydraulic oil in a hydraulic system, a support slide hydraulic control one-way valve 620 and a support slide two-way throttle valve 630 are connected between the support slide hydraulic cylinder 600 and the support slide electromagnetic directional valve 610.
Referring to fig. 4 and 6, the second electromagnetic directional valve set further includes four leg electromagnetic directional valves with Y-shaped middle performance. The leg electromagnetic directional valves are a left front leg electromagnetic directional valve 251, a left rear leg electromagnetic directional valve 261, a right front leg electromagnetic directional valve 271, and a right rear leg electromagnetic directional valve 261, respectively. An oil outlet of the left front leg electromagnetic directional valve 251 is connected with a left front leg hydraulic cylinder 250, a left rear leg electromagnetic directional valve is connected with a left rear leg hydraulic cylinder 260, a right front leg electromagnetic directional valve 271 is connected with a right front leg hydraulic cylinder 270, and a right rear leg electromagnetic directional valve 281 is connected with a right rear leg hydraulic cylinder 280. A leg two-way throttle valve 252 and a leg pilot-operated check valve 253 are also connected in the oil path between each leg solenoid directional valve and its actuator.
Referring to fig. 4 and 7, the left front leg hydraulic cylinder 250 is further connected with a left front telescopic hydraulic cylinder 290 for controlling the left front leg hydraulic cylinder to extend to the outer side of the body of the breakdown van, and the right front leg hydraulic cylinder 270 is connected with a right front telescopic hydraulic cylinder 300. The second electromagnetic reversing valve group also comprises a pair of telescopic electromagnetic reversing valves, and the pair of telescopic electromagnetic reversing valves are three-position four-way electromagnetic reversing valves with O-shaped neutral position functions. The telescopic electromagnetic directional valves are a left front telescopic electromagnetic directional valve 291 and a right front telescopic electromagnetic directional valve 301 respectively. The oil inlets of the left front telescopic electromagnetic directional valve 291 and the right front telescopic electromagnetic directional valve 301 are communicated with the oil outlet of the second hydraulic pump 200, the oil outlet of the left front telescopic electromagnetic directional valve 29 is communicated with the left front telescopic hydraulic cylinder 290, the oil outlet of the right front telescopic electromagnetic directional valve 301 is communicated with the right front telescopic hydraulic cylinder 300, the oil return ports of the left front telescopic electromagnetic directional valve 291 and the right front telescopic electromagnetic directional valve 301 are connected with an oil return tank through oil return pipes, and a bidirectional throttle valve 293 is additionally arranged between each telescopic electromagnetic directional valve and an execution element thereof.
The implementation principle of the embodiment of the application is as follows: in operation, the first hydraulic pump 100 pumps oil, and the hydraulic oil in the circuit can drive the hydraulic hammer 140 and the hydraulic drill 150 to operate under the action of the pile driving electromagnetic directional valve 120 and the manual pile driving directional valve 130, respectively. The hydraulic drill 150 and the hydraulic hammer 140 can obtain appropriate driving force through the first electromagnetic spill valve 110, respectively, so that the hydraulic hammer 140 and the hydraulic drill 150 can work. The position of the valve core of the big arm lifting electromagnetic directional valve 160 can be adjusted to control the motion state of the piston rod of the big arm lifting hydraulic cylinder 170, so as to adjust the big arm. When the second hydraulic pump 200 pumps oil, the second electromagnetic overflow valve 211 can control the pressure in the circuit to improve the overall safety, and the operating state of the swing rotary hydraulic cylinder 210 can be controlled by adjusting the position of the spool of the swing rotary electromagnetic directional valve 212, so that the orientation of the hydraulic hammer 140 or the hydraulic drill 150 can be adjusted to work with the hydraulic hammer 140 or the hydraulic drill 150. The extension, contraction or locking of the piston rod of the guide rail supine hydraulic cylinder 220 can be controlled by adjusting the guide rail supine electromagnetic directional valve 221, so as to adjust the working state of the guide rail. The position of the valve core of the hammer drill lifting electromagnetic directional valve 231 can be adjusted to adjust the working state of the hammer drill lifting hydraulic cylinder 230, so that the hydraulic hammer 140 and the hydraulic drill 150 can ascend, descend or keep the working positions unchanged. The position of the valve core of the leg electromagnetic directional valve can be adjusted to adjust the working states of the left front leg hydraulic cylinder 250, the left rear leg hydraulic cylinder 260, the right front leg hydraulic cylinder 270 and the right rear leg hydraulic cylinder 280, so that the guardrail breakdown van can keep a stable state during working.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. The utility model provides a hydraulic system of guardrail breakdown van which characterized in that: the hydraulic pile driving system comprises a first hydraulic system part (01), wherein the first hydraulic system part (01) comprises a first hydraulic pump (100), a first electromagnetic reversing valve bank connected with the first hydraulic pump (100) and a first electromagnetic overflow valve (110) connected with the first electromagnetic reversing valve bank in parallel, the first electromagnetic reversing valve bank comprises a pile driving electromagnetic reversing valve (120) and a manual pile driving reversing valve (130), an oil outlet of the first hydraulic pump (100) is connected with an oil inlet of the pile driving electromagnetic reversing valve (120), one oil outlet of the pile driving electromagnetic reversing valve (120) is connected with an oil inlet of the manual pile driving reversing valve (130), the other oil outlet of the pile driving electromagnetic reversing valve (120) is respectively communicated with oil return ports of a hydraulic hammer (140) and a hydraulic drill (150), an oil return port of the pile driving electromagnetic reversing valve (120) is connected with an oil return tank through an oil return pipe, one of oil outlets (130) of the manual pile driving reversing valve (130) is connected with an oil inlet of the hydraulic hammer (140), another oil-out is connected with the oil inlet of hydraulic pressure brill (150), hydraulic system of guardrail breakdown van still includes second hydraulic system part (02), second hydraulic system part (02) include second hydraulic pump (200), second electromagnetic spill valve (211) and second electromagnetic directional valve group, the oil-out and second electromagnetic spill valve (211) intercommunication of second hydraulic pump (200), and second electromagnetic spill valve (211) and the parallelly connected setting of second electromagnetic directional valve group, second electromagnetic directional valve group is including swing gyration electromagnetic directional valve (212), swing gyration electromagnetic directional valve (212) are connected with swing gyration pneumatic cylinder (210), the oil-out and the oil inlet of swing gyration electromagnetic directional valve (212) of second hydraulic pump (200) are connected, and the oil return port and the oil return tank of swing gyration electromagnetic directional valve (212) are connected, second electromagnetic directional valve group still includes hammer brill lift electromagnetic directional valve (231) and pile pulling bracing place electromagnetic directional valve (231), (the pile pulling prop ground electromagnetic directional valve), (the) is connected to the oil return tank) 240) Oil inlets of the hammer drill lifting electromagnetic directional valve (231) and the pile pulling ground supporting electromagnetic directional valve (240) are connected with an oil outlet of the second hydraulic pump (200), an oil outlet of the hammer drill lifting electromagnetic directional valve (231) is connected with a hammer drill lifting hydraulic cylinder (230), and an oil outlet of the pile pulling ground supporting electromagnetic directional valve (240) is connected with a pile pulling ground supporting hydraulic cylinder (243).
2. The hydraulic system of a guardrail breakdown van of claim 1, wherein: the first electromagnetic reversing valve set further comprises a large-arm lifting electromagnetic reversing valve (160), an oil inlet of the large-arm lifting electromagnetic reversing valve (160) is communicated with the first hydraulic pump (100), the large-arm lifting electromagnetic reversing valve (160) is connected with a pair of large-arm lifting hydraulic cylinders (170), an oil outlet of the large-arm lifting electromagnetic reversing valve (160) is communicated with rod cavities of the pair of large-arm lifting hydraulic cylinders (170) respectively, the other oil outlet of the large-arm lifting electromagnetic reversing valve (160) is communicated with a rodless cavity of the large-arm lifting hydraulic cylinders (170) respectively, and an oil return port of the large-arm lifting electromagnetic reversing valve (160) is connected with an oil return box.
3. The hydraulic system of a guardrail breakdown van of claim 1, wherein: the second electromagnetic directional valve group further comprises a guide rail supination electromagnetic directional valve (221), the guide rail supination electromagnetic directional valve (221) is connected with a guide rail supination hydraulic cylinder (220), an oil inlet of the guide rail supination electromagnetic directional valve (221) is connected with an oil outlet of the second hydraulic pump (200), one oil outlet of the guide rail supination electromagnetic directional valve (221) is connected with a rod cavity of the guide rail supination hydraulic cylinder (220), the other oil outlet of the guide rail supination electromagnetic directional valve is communicated with a rod-free cavity of the guide rail supination hydraulic cylinder (220), and an oil return port of the guide rail supination electromagnetic directional valve (221) is connected with an oil return tank.
4. The hydraulic system of a guardrail breakdown van of claim 3, wherein: the second electromagnetic directional valve set further comprises a left front leg electromagnetic directional valve (251), a left rear leg electromagnetic directional valve (261), a right front leg electromagnetic directional valve (271) and a right rear leg electromagnetic directional valve (281) which are connected with the second hydraulic pump (200), an oil outlet of the left front leg electromagnetic directional valve (251) is connected with a left front leg hydraulic cylinder (250), the left rear leg electromagnetic directional valve (261) is connected with a left rear leg hydraulic cylinder (260), the right front leg electromagnetic directional valve (271) is connected with a right front leg hydraulic cylinder (270), and the right rear leg electromagnetic directional valve (281) is connected with a right rear leg hydraulic cylinder (280).
5. The hydraulic system of a guardrail breakdown van of claim 4, wherein: the second electromagnetic directional valve group further comprises a left front telescopic electromagnetic directional valve (291) and a right front telescopic electromagnetic directional valve (301), oil inlets of the left front telescopic electromagnetic directional valve (291) and the right front telescopic electromagnetic directional valve (301) are communicated with an oil outlet of the second hydraulic pump (200), an oil outlet of the left front telescopic electromagnetic directional valve (291) is connected with a left front telescopic hydraulic cylinder (290), and an oil outlet of the right front telescopic electromagnetic directional valve (301) is connected with a right front telescopic hydraulic cylinder (300).
6. The hydraulic system of a guardrail breakdown van of claim 1, wherein: the oil return path is connected with a hydraulic oil radiator (400) and an oil return filter element (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122372251.0U CN216767909U (en) | 2022-04-06 | 2022-04-06 | Hydraulic system of guardrail breakdown van |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122372251.0U CN216767909U (en) | 2022-04-06 | 2022-04-06 | Hydraulic system of guardrail breakdown van |
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| Publication Number | Publication Date |
|---|---|
| CN216767909U true CN216767909U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122372251.0U Active CN216767909U (en) | 2022-04-06 | 2022-04-06 | Hydraulic system of guardrail breakdown van |
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| Country | Link |
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| CN (1) | CN216767909U (en) |
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2022
- 2022-04-06 CN CN202122372251.0U patent/CN216767909U/en active Active
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