Supporting leg hydraulic control system and emergency drainage square cabin

Abstract

The utility model discloses a landing leg hydraulic control system and an emergency drainage shelter, the landing leg hydraulic control system comprises an oil pumping device, a landing leg oil cylinder assembly, a landing leg reversing valve and a flow control device, the landing leg oil cylinder assembly comprises at least two landing leg oil cylinders, a first oil inlet of the landing leg reversing valve is communicated with the oil pumping device, and a second oil inlet of the landing leg reversing valve is communicated with the flow control device; a first working oil port of the supporting leg reversing valve is communicated with a rodless cavity of each supporting leg oil cylinder through a first oil control oil way, and a second working oil port of the supporting leg reversing valve is communicated with a rod cavity of each supporting leg oil cylinder through a second oil control oil way. The supporting leg reversing valve is used for selecting one of the two working oil ports to be communicated with the first oil inlet, flow control devices are arranged on the first oil control oil way and / or the second oil control oil way, and the flow control devices can evenly distribute oil flowing into the supporting leg oil cylinders. Therefore, the telescopic supporting legs can be driven to stretch out and / or retract synchronously, and the purpose of preventing equipment from shaking and being unstable and even tipping over is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic control, and particularly relates to a leg hydraulic control system and an emergency drainage shelter. Background Art

[0002] The emergency drainage shelter is a mobile device specially used to deal with problems such as urban waterlogging and poor drainage. There are four retractable legs on the emergency drainage shelter. The four legs are mainly used to support the shelter body to ensure the stability of the shelter during operation, and also facilitate the loading and unloading of the shelter. However, when the four legs are driven and controlled, it is easy to cause the equipment to skew, shake unstably, or even tip over due to inconsistent telescopic speeds. Summary of the Utility Model

[0003] In view of the above defects or deficiencies, the utility model provides a leg hydraulic control system and an emergency drainage shelter, aiming to solve the technical problem that when the legs of the emergency drainage shelter are driven and controlled, it is easy to cause the equipment to skew, shake unstably or even tip over due to inconsistent telescopic speeds.

[0004] To achieve the above object, in the first aspect of the utility model, a leg hydraulic control system is provided. The leg hydraulic control system includes an oil pumping device, a leg oil cylinder assembly, a leg reversing valve, and a flow control device. The oil pumping device is used to pump and suck the hydraulic oil in the fuel tank. The leg oil cylinder assembly includes at least two leg oil cylinders that respectively drive different telescopic legs to expand and contract. The first oil inlet of the leg reversing valve is communicated with the oil pumping device. The first working oil port of the leg reversing valve is respectively communicated with the rodless cavities of each leg oil cylinder through a first oil control circuit, and the second working oil port is respectively communicated with the rodless cavities of each leg oil cylinder through a second oil control circuit. The leg reversing valve is used to select one of the two working oil ports to be communicated with the first oil inlet. A flow control device is provided on the first oil control circuit and / or the second oil control circuit. The flow control device is used to evenly distribute the oil flowing into each leg oil cylinder.

[0005] In an embodiment of the utility model, both the first oil control circuit and / or the second oil control circuit include an oil control main circuit and an oil control branch circuit. The flow control device is set as a synchronous motor. The motor inlet of the synchronous motor is communicated with the corresponding working oil port through the oil control main circuit. The number of the motor outlets of the synchronous motor, the oil control branch circuits in each oil control circuit, and the leg oil cylinders is the same. And the oil control branch circuits are respectively communicated with the motor outlets and the corresponding oil cavities of the leg oil cylinders. An opening and closing control valve connected back to the fuel tank is also connected in parallel to each oil control branch circuit.

[0006] In an embodiment of the utility model, the opening and closing control valve is set as a normally open unloading valve of two-position two-way.

[0007] In the embodiment of the present utility model, the fuel tank is connected to an oil return circuit. The opening and closing control valves on all the oil control branches of the first oil control circuit are connected through a first converging circuit, and the opening and closing control valves on all the oil control branches of the second oil control circuit are connected through a second converging circuit. Moreover, the first converging circuit and the second converging circuit are connected to the oil return circuit.

[0008] In the embodiment of the present utility model, the outrigger hydraulic control system further includes a control device, and a key controller for individually manually controlling each opening and closing control valve is provided on the control device.

[0009] In the embodiment of the present utility model, the outrigger hydraulic control system further includes a swing arm oil cylinder assembly and a swing arm reversing valve. The swing arm oil cylinder assembly includes at least two swing arm oil cylinders that respectively drive different swing arm linkages to expand or retract relative to the equipment main body. Each telescopic outrigger is correspondingly arranged on a different swing arm linkage. The second oil inlet and the second oil return port of the swing arm reversing valve are respectively and correspondingly connected to the oil pumping device and the fuel tank. The third working oil port of the swing arm reversing valve is respectively connected to the rodless cavity of each swing arm oil cylinder, and the fourth working oil port is respectively connected to the rod end cavity of each swing arm oil cylinder. The swing arm reversing valve is used to select one of the third working oil port and the fourth working oil port to be connected to the second oil inlet, and the other to be connected to the second oil return port.

[0010] In the embodiment of the present utility model, the fuel tank is connected to an oil supply circuit and an oil return circuit. The oil pumping device includes a filter and an oil pumping assembly arranged in sequence on the oil supply circuit. The oil pumping assembly is used to pump the hydraulic oil in the fuel tank to the first oil inlet. An overflow valve is connected between the oil supply circuit and the oil return circuit, and the overflow valve is located between the oil pumping assembly and the first oil inlet.

[0011] In the embodiment of the present utility model, each outrigger oil cylinder is equipped with a first hydraulic lock.

[0012] To achieve the above object, the second aspect of the present utility model provides an emergency drainage shelter. The emergency drainage shelter includes an equipment main body, swing arm linkages, telescopic outriggers, and the outrigger hydraulic control system described above. The number of swing arm linkages and telescopic outriggers is set to four. The four swing arm linkages are respectively arranged at the four corner positions of the equipment main body and can all be expanded or retracted and driven. The four telescopic outriggers are respectively arranged on the four swing arm linkages.

[0013] In the embodiment of the present utility model, the equipment main body includes a lower box body and an upper box body stacked from bottom to top. The outrigger hydraulic control system is placed in the upper box body, and a through hole for the oil supply pipe to extend out is provided on the side plate of the upper box body. A drainage device is arranged in the lower box body.

[0014] In the embodiment of the present utility model, a travel switch for ground contact detection is provided on the telescopic outrigger, and a horizontal sensor for detecting the inclination angle is provided on the equipment main body.

[0015] By the above technical solution, the outrigger hydraulic control system provided by the embodiment of the present utility model has the following beneficial effects:

[0016] When using the above outrigger hydraulic control system, since it includes an oil pumping device, an outrigger cylinder assembly, an outrigger reversing valve and a flow control valve, the oil pumping device can suck the hydraulic oil in the fuel tank to the first oil inlet of the outrigger reversing valve. When performing the extension drive control of the telescopic outrigger, the outrigger reversing valve can be switched to connect the first working oil port with the first oil inlet, so that the rodless chambers of at least two outrigger cylinders are filled with oil and the rod chambers return oil. When performing the retraction drive control of the telescopic outrigger, the outrigger reversing valve can be switched to connect the second working oil port with the first oil inlet, so that the rod chambers of at least two outrigger cylinders are filled with oil and the rodless chambers return oil. At the same time, the first working oil port of the outrigger reversing valve is respectively connected to the rodless chambers of each outrigger cylinder through the first oil control oil circuit, and the second working oil port is respectively connected to the rod chambers of each outrigger cylinder through the second oil control oil circuit. And a flow control device can be additionally provided on the first oil control oil circuit and / or the second oil control oil circuit. The flow control device can evenly distribute the oil flowing into each outrigger cylinder. When the sizes of each outrigger cylinder are exactly the same, by forcibly and evenly distributing the oil flowing into each outrigger cylinder through the flow control device, it can drive the telescopic outrigger to extend and / or retract synchronously, avoiding the shaking and instability or even tipping caused by the outrigger cylinders being out of sync, and at the same time greatly reducing the leveling times of the equipment and simplifying the operation process.

[0017] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. They are used together with the following specific implementation to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0019] Figure 1 is a schematic structural diagram of an outrigger hydraulic control system in an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of a rocker link in a retracted state in an emergency drainage shelter in an embodiment of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the swing arm link in the emergency drainage cabin in the deployed state and the telescopic support leg in the extended state according to an embodiment of the present utility model.

[0022] Explanation of reference numerals

[0023] 100 Oil pumping device 101 Filter

[0024] 102 Gear oil pump 103 Motor

[0025] 104 Overflow valve 200 Support leg cylinder

[0026] 201 First hydraulic lock 210 Telescopic support leg

[0027] 211 Travel switch

[0028] 300 Support leg directional valve 310 First oil control oil circuit

[0029] 320 Second oil control oil circuit 330 Main oil control circuit

[0030] 331 Oil control branch 332 First converging oil circuit

[0031] 333 Second converging oil circuit 400 Flow control device

[0032] 401 Synchronous motor 402 Opening and closing control valve

[0033] 500 Fuel tank 501 Oil supply oil circuit

[0034] 502 Oil return oil circuit 600 Swing arm cylinder

[0035] 601 Second hydraulic lock 610 Swing arm link

[0036] 700 Swing arm directional valve 800 Equipment main body

[0037] 801 Lower box body 802 Upper box body

[0038] 803 Horizontal sensor Detailed implementation manners

[0039] The following is a detailed description of specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0040] The following describes the support leg hydraulic control system and the emergency drainage cabin of the present utility model with reference to the accompanying drawings.

[0041] As Figures 1 to 3As shown in the figure, the present utility model provides a leg hydraulic control system, wherein the leg hydraulic control system includes:

[0042] An oil pumping device 100 for pumping the hydraulic oil in the fuel tank 500;

[0043] A leg cylinder assembly including at least two leg cylinders 200 that respectively drive different telescopic legs 210 to expand and contract;

[0044] A leg reversing valve 300, the first oil inlet of the leg reversing valve 300 is communicated with the oil pumping device 100, the first working oil port of the leg reversing valve 300 is respectively communicated with the rodless cavity of each leg cylinder 200 through a first oil control circuit 310, and the second working oil port is respectively communicated with the rod cavity of each leg cylinder 200 through a second oil control circuit 320. The leg reversing valve 300 is used to select one of the two working oil ports to be communicated with the first oil inlet;

[0045] A flow control device 400, and a flow control device 400 is provided on both the first oil control circuit 310 and / or the second oil control circuit 320. The flow control device 400 is used to evenly distribute the oil flowing into each leg cylinder 200.

[0046] When using the above leg hydraulic control system, since it includes an oil pumping device 100, a leg cylinder assembly, a leg reversing valve 300 and a flow control valve, the oil pumping device 100 can pump the hydraulic oil in the fuel tank 500 to the first oil inlet of the leg reversing valve 300. When the telescopic leg 210 is driven to extend, the leg reversing valve 300 can be switched to select the first working oil port to be communicated with the first oil inlet, so that the rodless cavities of at least two leg cylinders 200 are filled with oil and the rod cavities return oil. When the telescopic leg 210 is driven to retract, the leg reversing valve 300 can be switched to select the second working oil port to be communicated with the first oil inlet, so that the rod cavities of at least two leg cylinders 200 are filled with oil and the rodless cavities return oil. At the same time, the first working oil port of the leg reversing valve 300 is respectively communicated with the rodless cavity of each leg cylinder 200 through the first oil control circuit 310, and the second working oil port is respectively communicated with the rod cavity of each leg cylinder 200 through the second oil control circuit 320. And a flow control device 400 can be additionally provided on the first oil control circuit 310 and / or the second oil control circuit 320. The flow control device 400 can evenly distribute the oil flowing into each leg cylinder 200. When the sizes of each leg cylinder 200 are exactly the same, by forcing the flow control device 400 to evenly distribute the oil flowing into each leg cylinder 200, the telescopic leg 210 can be driven to extend and / or retract synchronously, avoiding the shaking, instability or even tipping caused by the non-synchronization of the leg cylinders 200, and at the same time greatly reducing the leveling times of the equipment and simplifying the operation process.

[0047] Specifically, when the telescopic outrigger 210 is controlled for extending drive, the flow control device 400 on the first oil control circuit 310 can evenly distribute the hydraulic oil flowing into the rodless chamber of each outrigger cylinder 200; when the telescopic outrigger 210 is controlled for retracting drive, the flow control device 400 on the second oil control circuit 320 can evenly distribute the hydraulic oil flowing into the rod chamber of each outrigger cylinder 200. In addition, in the outrigger hydraulic control system of the present utility model, the number of outrigger cylinders 200 is set to be the same as the number of telescopic outriggers 210 of the equipment.

[0048] In the embodiment of the present utility model, both the first oil control circuit 310 and / or the second oil control circuit 320 include an oil control main path 330 and an oil control branch path 331. The flow control device 400 is set as a synchronous motor 401. The motor inlet of the synchronous motor 401 is communicated with the corresponding working oil port through the oil control main path 330. The motor outlet of the synchronous motor 401, the oil control branch paths 331 in each oil control circuit are set to be the same as the number of outrigger cylinders 200, and the oil control branch paths 331 are correspondingly communicated with the motor outlet and the corresponding oil chamber of the outrigger cylinder 200 one by one. An opening and closing control valve 402 connected back to the oil tank 500 is also connected in parallel on each oil control branch path 331. Using the synchronous motor 401 for even distribution of the flow makes the oil circuit distribution structure and the oil circuit control simpler. At the same time, the addition of the opening and closing control valve 402 can prevent the cavitation phenomenon that may occur in the oil return of the synchronous motor 401 and damage the synchronous motor.

[0049] Further, when the telescopic outrigger 210 is controlled for extending drive, the outrigger change-over valve 300 is controlled to switch to select the first working oil port to be communicated with the first oil inlet, the opening and closing control valves 402 on all the oil control branch paths 331 of the first oil control circuit 310 are controlled to be closed, and the opening and closing control valves 402 on all the oil control branch paths 331 of the second oil control circuit 320 are controlled to be opened. Then the flow direction of the hydraulic oil is: oil tank 500 - oil pumping device 100 - first oil inlet - first working oil port - synchronous motor 401 on the first oil control circuit 310 - rodless chamber of each outrigger cylinder 200 - rod chamber of each outrigger cylinder 200 - opening and closing control valves 402 on all the oil control branch paths 331 of the second oil control circuit 320 - oil tank 500.

[0050] Meanwhile, when the telescopic outrigger 210 is retracted and driven, the outrigger reversing valve 300 is controlled to switch to connect the second working oil port to the first oil inlet, all the opening and closing control valves 402 on all the oil control branches 331 of the first oil control circuit 310 are controlled to open, and all the opening and closing control valves 402 on all the oil control branches 331 of the second oil control circuit 320 are controlled to close. Then the flow direction of the hydraulic oil is: fuel tank 500 - oil pumping device 100 - first oil inlet - second working oil port - synchronous motor 401 on the second oil control circuit 320 - rodless chamber of each outrigger cylinder 200 - rodless chamber of each outrigger cylinder 200 - opening and closing control valve 402 on all the oil control branches 331 of the first oil control circuit 310 - fuel tank 500.

[0051] Of course, the present utility model is not limited to this. The flow control device 400 can also be set as a flow distribution valve group. The flow distribution valve group can integrate multiple valve bodies. First, divide a path of hydraulic oil into two paths of hydraulic oil, and then divide the two paths of hydraulic oil into four paths of hydraulic oil.

[0052] In the embodiment of the present utility model, the opening and closing control valve 402 is set as a normally open unloading valve of two-position two-way type. Then when the opening and closing control valve 402 needs to maintain an open state, no control is required, making the control logic simpler. Specifically, when the telescopic outrigger 210 is extended and driven, the control logic can be simplified to: controlling the outrigger reversing valve 300 to switch to connect the first working oil port to the first oil inlet, and controlling all the opening and closing control valves 402 on all the oil control branches 331 of the first oil control circuit 310 to be energized and closed; when the telescopic outrigger 210 is retracted and driven, the control logic can be simplified to: controlling the outrigger reversing valve 300 to switch to connect the second working oil port to the first oil inlet, and controlling all the opening and closing control valves 402 on all the oil control branches 331 of the second oil control circuit 320 to be energized and closed. In addition, the opening and closing control valve 402 can also be set as a normally closed solenoid valve of two-position two-way type, and the control logic can be changed accordingly.

[0053] In the embodiment of the present utility model, the fuel tank 500 is connected with an oil return circuit 502. All the opening and closing control valves 402 on all the oil control branches 331 of the first oil control circuit 310 are connected through a first converging oil circuit 332, and all the opening and closing control valves 402 on all the oil control branches 331 of the second oil control circuit 320 are connected through a second converging oil circuit 333. And the first converging oil circuit 332 and the second converging oil circuit 333 converge at the oil return circuit 502. By adding the first converging oil circuit 332 and the second converging oil circuit 333, the use of oil pipes can be reduced, the space occupied by the oil pipe layout can be reduced, and the orderliness of the oil pipe layout can be improved.

[0054] In the embodiment of the present utility model, the outrigger hydraulic control system further includes a control device, and a key controller for individually and manually controlling each opening and closing control valve 402 is provided on the control device. By adding the key controller on the control device, when the electrical sensor fails, it is possible to manually adjust a certain outrigger cylinder 200 to extend or retract.

[0055] Specifically, when it is necessary to manually adjust a certain outrigger cylinder 200 to extend, the corresponding opening and closing control valve 402 on the first oil control circuit 310 can be selected through the key controller to be closed, and the other remaining opening and closing control valves 402 on the first oil control circuit 310 are opened, so that the hydraulic oil flowing out from the first working oil port of the outrigger reversing valve 300 will only flow into the rodless cavity of the corresponding outrigger cylinder 200, rather than flowing into the rodless cavities of the other remaining outrigger cylinders 200, thereby achieving the purpose of manually adjusting a certain outrigger cylinder 200 to extend. When it is necessary to manually adjust a certain outrigger cylinder 200 to retract, the corresponding opening and closing control valve 402 on the second oil control circuit 320 can be selected through the key controller to be closed, and the other remaining opening and closing control valves 402 on the second oil control circuit 320 are opened, so that the hydraulic oil flowing out from the second working oil port of the outrigger reversing valve 300 will only flow into the rod cavity of the corresponding outrigger cylinder 200, rather than flowing into the rod cavities of the other remaining outrigger cylinders 200, thereby achieving the purpose of manually adjusting a certain outrigger cylinder 200 to retract.

[0056] In the embodiment of the present utility model, the outrigger hydraulic control system further includes a swing arm cylinder assembly and a swing arm reversing valve 700. The swing arm cylinder assembly includes at least two swing arm cylinders 600 that respectively drive different swing arm links 610 to expand or retract with respect to the equipment main body 800. Each telescopic outrigger 210 is correspondingly arranged on a different swing arm link 610. The second oil inlet and the second oil return port of the swing arm reversing valve 700 are respectively and correspondingly connected to the oil pumping device 100 and the fuel tank 500. The third working oil port of the swing arm reversing valve 700 is respectively connected to the rodless cavity of each swing arm cylinder 600, and the fourth working oil port is respectively connected to the rod cavity of each swing arm cylinder 600. The swing arm reversing valve 700 is used to select one of the third working oil port and the fourth working oil port to be connected to the second oil inlet, and the other to be connected to the second oil return port. That is, the drive of the swing arm link 610 is also selected to be hydraulically driven and shares the same oil pumping device 100 with the drive of the telescopic outrigger 210, so that the entire hydraulic control system can be fully utilized. At the same time, since there is no synchronization requirement for the outrigger action of the telescopic outrigger 210, the hydraulic oil can freely enter the oil cavity of each swing arm cylinder 600 without forced flow distribution.

[0057] In the embodiment of the present utility model, a fuel tank 500 is connected with an oil supply pipeline 501 and an oil return pipeline 502. The oil pumping device 100 includes a filter 101 and an oil pumping assembly which are sequentially arranged on the oil supply pipeline 501. The oil pumping assembly is used to pump the hydraulic oil in the fuel tank 500 to the first oil inlet. By adding the filter 101, it can play a role in protecting the hydraulic components of the system from being damaged by contaminated particles. At the same time, a relief valve 104 is connected between the oil supply pipeline 501 and the oil return pipeline 502, and the relief valve 104 is located between the oil pumping assembly and the first oil inlet. The working pressure upper limit of the system can be set through the relief valve 104. Once the system pressure exceeds the set value, the relief valve 104 will automatically open to discharge the excess hydraulic oil from the system and keep the system pressure stable.

[0058] In the embodiment of the present utility model, each outrigger cylinder 200 is provided with a first hydraulic lock 201. The first hydraulic lock 201 can prevent the flow of oil by locking the circuit, so as to ensure that the cylinder can keep its position stationary under a certain external load. In addition, each swing arm cylinder 600 can also be provided with a second hydraulic lock 601.

[0059] In the embodiment of the present utility model, the oil pumping assembly includes a motor 103 and a gear oil pump 102. The motor 103 is used to drive the gear oil pump 102 to rotate so as to pump the hydraulic oil in the fuel tank 500 into the oil supply pipeline 501.

[0060] Thus, the gear oil pump 102 is driven by the motor 103 to supply oil to the entire hydraulic control system. When the emergency drainage shelter performs the ascending operation, one side of the electromagnetic iron of the swing arm reversing valve 700 is energized, and the pressure oil passes through the swing arm reversing valve 700 and enters the rodless cavities of the four swing arm cylinders 600 respectively from the third working oil port of the swing arm reversing valve 700, so that each swing arm cylinder 600 extends, and the telescopic support leg 210 follows the unfolding of the swing arm connecting rod 610 and swings out from the equipment main body 800. Since there is no synchronous requirement for the swinging action of the telescopic support leg 210, the pressure oil freely enters the rodless cavity of the swing arm cylinder 600 without forced flow distribution. After the telescopic support leg 210 swings in place, the electromagnetic iron on one side of the support leg reversing valve 300 and the normally open unloading valves on all the oil control branches 331 of the first oil control circuit 310 are energized. The pressure oil passes through the support leg reversing valve 300 and enters the synchronous motor 401 on the first oil control circuit 310 from the first working oil port of the support leg reversing valve 300, and then is forced to be divided into four equal-flow pressure oils. Since the normally open unloading valves on all the oil control branches 331 of the first oil control circuit 310 are energized and in the closed state, the four equal-flow pressure oils can only flow into the rodless cavities of the four support leg cylinders 200 respectively. The four support leg cylinders 200 have exactly the same size and the same inflowing flow rate, so the four support leg cylinders 200 can extend synchronously, avoiding the shaking instability or even tipping caused by the unevenness of the equipment due to the non-synchronization of the support leg cylinders 200. At the same time, it also greatly reduces the leveling times of the equipment and simplifies the operation process.

[0061] Similarly, when the emergency drainage shelter performs the descending action, the electromagnetic iron on the other side of the support leg reversing valve 300 and the normally open unloading valves on all the oil control branches 331 of the second oil control circuit 320 are energized. The pressure oil passes through the support leg reversing valve 300 and enters the synchronous motor 401 on the second oil control circuit 320 from the second working oil port of the support leg reversing valve 300, and is forced to be divided into four equal-flow pressure oils. Since the normally open unloading valves on all the oil control branches 331 of the second oil control circuit 320 are energized and in the closed state, the four equal-flow pressure oils can only flow into the rodless cavities of the support leg cylinders 200 respectively. The four support leg cylinders 200 have exactly the same size and the same inflowing flow rate, so the four support leg cylinders 200 can retract synchronously, avoiding the phenomenon of frequent leveling of the system and the impact and shaking of the whole machine caused by the non-synchronization of the support leg cylinders 200. After the support leg cylinders 200 retract in place, the electromagnetic iron on the other side of the swing arm reversing valve 700 is energized, and the pressure oil passes through the swing arm reversing valve 700 and flows into the rodless cavities of the four swing arm cylinders 600 respectively from the fourth working oil port of the swing arm reversing valve 700, and the swing arm cylinders 600 retract, so that the telescopic support leg 210 can be retracted through the swing arm connecting rod 610.

[0062] To achieve the above object, the second aspect of the present utility model provides an emergency drainage shelter. The emergency drainage shelter includes a device main body 800, swing arm linkages 610, telescopic legs 210, and the leg hydraulic control system described above. The number of swing arm linkages 610 and telescopic legs 210 is set to four each. The four swing arm linkages 610 are respectively arranged at the four corner positions of the device main body 800 and can all be deployed or retracted by a driving device. The four telescopic legs 210 are respectively arranged on the four swing arm linkages 610. Since the emergency drainage shelter adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0063] In the embodiment of the present utility model, the device main body 800 includes a lower box body 801 and an upper box body 802 stacked from bottom to top. The leg hydraulic control system is placed inside the upper box body 802, and a through hole for the oil pipe to extend out is opened on the side plate of the upper box body 802. A drainage device is provided inside the lower box body 801. That is, by placing the leg hydraulic control system inside the upper box body 802, a protective effect can be achieved, and the through hole opened on the side plate of the upper box body 802 facilitates guiding the oil pipe in the leg hydraulic control system to the outside for connection with the leg cylinder 200 and the swing arm cylinder 600.

[0064] In the embodiment of the present utility model, a travel switch 211 for ground contact detection is provided on the telescopic leg 210. Whether the telescopic leg 210 touches the ground can be detected through the travel switch 211, so as to control the corresponding telescopic leg 210 to stop operating after detecting that the leg touches the ground.

[0065] Meanwhile, a horizontal sensor 803 for detecting the tilt angle is provided on the device main body 800. After all the telescopic legs 210 are detected to touch the ground, the horizontal sensor 803 can detect the detection angles of the X-axis and the Y-axis, so as to be able to judge the tilt direction of the device main body 800 according to the detection angles, thereby controlling the individual telescopic legs 210 to extend and retract to level the whole device. After detecting that both the X-axis and the Y-axis are in a horizontal state, continue to control all the telescopic legs 210 to extend and retract synchronously. During the extension and retraction process, the horizontal sensor 803 will also perform real-time detection. Once the X-axis or the Y-axis is skewed, timely adjustment is made to ensure that the device is always in a stable state until the device is lifted to the highest position or lowered to the lowest position.

[0066] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0068] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0069] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A outrigger hydraulic control system, characterized in that The outrigger hydraulic control system comprises: An oil pumping device (100) for pumping hydraulic oil in an oil tank (500); The outrigger oil cylinder assembly comprises at least two outrigger oil cylinders (200) for driving different telescopic outriggers (210) to telescope in a one-to-one correspondence; An outrigger reversing valve (300), wherein a first oil inlet of the outrigger reversing valve (300) is communicated with the oil pumping device (100), a first working oil port of the outrigger reversing valve (300) is respectively communicated with a rodless chamber of each outrigger oil cylinder (200) through a first oil control oil circuit (310), and a second working oil port is respectively communicated with a rod chamber of each outrigger oil cylinder (200) through a second oil control oil circuit (320), and the outrigger reversing valve (300) is used to select one of the two working oil ports to be communicated with the first oil inlet; A flow control device (400), the first oil control oil circuit (310) and / or the second oil control oil circuit (320) are both provided with the flow control device (400), the flow control device (400) being used to evenly distribute the oil flowing into each of the outrigger cylinders (200).

2. The outrigger hydraulic control system according to claim 1, wherein The first oil control oil circuit (310) and / or the second oil control oil circuit (320) both include an oil control main circuit (330) and an oil control branch circuit (331); the flow control device (400) is configured as a synchronous motor (401); a motor inlet of the synchronous motor (401) is connected to a corresponding working oil port through the oil control main circuit (330); the motor outlet of the synchronous motor (401), the oil control branch circuits (331) in each oil control oil circuit and the number of the outrigger oil cylinders (200) are configured to be consistent; and the oil control branch circuits (331) are connected to the motor outlet and the corresponding oil chambers of the outrigger oil cylinders (200) in a one-to-one correspondence; and each of the oil control branch circuits (331) is also connected to an on-off control valve (402) connected to a return oil tank (500).

3. The outrigger hydraulic control system according to claim 2, wherein, The on-off control valve (402) is configured as a two-position, two-way normally open unloading valve.

4. The outrigger hydraulic control system according to claim 2, characterized in that, The oil tank (500) is connected to an oil return circuit (502); the on / off control valves (402) on all the oil control branches (331) of the first oil control circuit (310) are connected via a first connecting oil circuit (332); the on / off control valves (402) on all the oil control branches (331) of the second oil control circuit (320) are connected via a second connecting oil circuit (333); and the first connecting oil circuit (332) and the second connecting oil circuit (333) are connected to the oil return circuit (502).

5. The outrigger hydraulic control system according to claim 2, wherein The outrigger hydraulic control system further comprises a control device, on which a button is provided for individually manually controlling each of the opening and closing control valves (402).

6. The outrigger hydraulic control system according to any one of claims 1 to 5, characterized in that, The outrigger hydraulic control system further includes a swing arm oil cylinder assembly and a swing arm reversing valve (700). The swing arm oil cylinder assembly includes at least two swing arm oil cylinders (600) that respectively drive different swing arm linkages (610) to expand or retract relative to the equipment main body (800). Each telescopic outrigger (210) is correspondingly arranged on a different swing arm linkage (610). The second oil inlet and the second oil return port of the swing arm reversing valve (700) are respectively and correspondingly communicated with the oil pumping device (100) and the fuel tank (500). The third working oil port of the swing arm reversing valve (700) is communicated with the rodless cavity of each swing arm oil cylinder (600), and the fourth working oil port is communicated with the rod cavity of each swing arm oil cylinder (600). The swing arm reversing valve (700) is used to select one of the third working oil port and the fourth working oil port to be communicated with the second oil inlet, and the other to be communicated with the second oil return port.

7. The outrigger hydraulic control system according to any one of claims 1 to 5, characterized in that, The fuel tank (500) is connected with an oil supply pipeline (501) and an oil return pipeline (502). The oil pumping device (100) includes a filter (101) and an oil pumping assembly arranged in sequence on the oil supply pipeline (501). The oil pumping assembly is used to pump the hydraulic oil in the fuel tank (500) to the first oil inlet. An overflow valve (104) is connected between the oil supply pipeline (501) and the oil return pipeline (502), and the overflow valve (104) is located between the oil pumping assembly and the first oil inlet.

8. The outrigger hydraulic control system according to any one of claims 1 to 5, characterized in that, Each outrigger oil cylinder (200) is equipped with a first hydraulic lock (201).

9. An emergency drainage cabin, characterized in that, The emergency drainage shelter includes an equipment main body (800), swing arm linkages (610), telescopic outriggers (210), and the outrigger hydraulic control system according to any one of claims 1 to 8. The number of the swing arm linkages (610) and the telescopic outriggers (210) is both set to four. The four swing arm linkages (610) are respectively arranged at the four corner positions of the equipment main body (800) and can all be driven to expand or retract. The four telescopic outriggers (210) are respectively arranged on the four swing arm linkages (610).

10. The emergency drainage cabin according to claim 9, characterized in that, The equipment main body (800) includes a lower box body (801) and an upper box body (802) stacked from bottom to top. The outrigger hydraulic control system is placed in the upper box body (802), and a through hole for the oil supply pipe to extend out is opened on the side plate of the upper box body (802). A drainage device is arranged in the lower box body (801). And / or, a travel switch (211) for ground contact detection is arranged on the telescopic outrigger (210), and a horizontal sensor (803) for detecting the tilt angle is arranged on the equipment main body (800).

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