Dual power hydraulic control system and onboard pump

Abstract

The present invention provides a dual-power hydraulic control system and a vehicle-mounted pump, which are used to supply oil to the reversing mechanism and the working mechanism respectively to provide control power. The dual-power hydraulic control system includes: an oil tank; a first hydraulic control system, which is connected to the oil tank and is suitable for unidirectionally supplying oil to the reversing mechanism and the working mechanism respectively to provide power; and a second hydraulic control system, which is connected to the oil tank, and the second hydraulic control system is used to supply oil to the reversing mechanism and the working mechanism respectively or return oil to the oil tank according to different working positions. The present invention can choose whether the oil output of the second hydraulic control system returns to the oil tank or enters the reversing mechanism and the working mechanism respectively by operating the second hydraulic control system to switch to different working positions, thereby simplifying the operation, preventing operational errors, and improving the reliability of the dual-power hydraulic control system.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control systems, and in particular to a dual-power hydraulic control system and a vehicle-mounted pump. Background Art

[0002] In the related art, the dual-power vehicle pump is composed of a superstructure power system and a chassis power system, both of which are equipped with a double gear pump, and the two double gear pumps provide pressure oil to the reversing system and the stirring system respectively through the dual-power hydraulic system 100'. Figure 1 As shown in the figure, the reversing system and the stirring system are equipped with two two-way selection valves, each of which includes two one-way valves and two plate-type ball valves. The two oil outlets of the two duplex gear pumps are connected to the two two-way selection valves respectively. Therefore, the different opening and closing combinations of the four plate-type ball valves can meet the different working conditions of the upper power system and the chassis power system, such as separate pumping or combined pumping. However, since there are many control combinations through the four plate-type ball valves, there are a total of sixteen permutations and combinations, and only four of them are valid combinations, it is easy to operate incorrectly. Summary of the invention

[0003] The present invention aims to solve or improve at least one of the above-mentioned technical problems.

[0004] A first object of the present invention is to provide a dual-power hydraulic control system.

[0005] A second object of the present invention is to provide a vehicle-mounted pump.

[0006] To achieve the first objective of the present invention, an embodiment of the present invention provides a dual-power hydraulic control system for supplying oil to a reversing mechanism and a working mechanism respectively to provide control power, the dual-power hydraulic control system comprising: an oil tank; a first hydraulic control system connected to the oil tank, the first hydraulic control system directly supplies oil to the reversing mechanism and the working mechanism respectively in one direction through a one-way valve to provide power; and a second hydraulic control system connected to the oil tank, the second hydraulic control system supplies oil to the reversing mechanism and the working mechanism respectively through a control valve or returns oil to the oil tank.

[0007] In this technical solution, the working mechanism can be a stirring mechanism, and the oil inlet position of the reversing mechanism and the oil inlet position of the working mechanism are respectively connected to an oil inlet pipeline, the first hydraulic control system directly supplies oil to the reversing mechanism and the working mechanism respectively, and the second hydraulic control system supplies oil or returns oil to the reversing mechanism and the working mechanism respectively. That is, the first hydraulic control system and the second hydraulic control system supply oil to the reversing mechanism and the working mechanism respectively through the oil inlet pipeline, and the position where the first hydraulic control system supplies oil to the reversing mechanism and the working mechanism is behind the position where the second hydraulic control system supplies oil to the reversing mechanism and the working mechanism. By operating the second hydraulic control system to switch to a different working position, it can be selected whether the oil output of the second hydraulic control system returns to the oil tank or enters the reversing mechanism and the working mechanism respectively. Compared with the existing related technology, the operation is simplified, no operational errors will be caused, and the reliability of the dual-power hydraulic control system is improved.

[0008] In addition, the technical solution provided by the present invention may also have the following additional technical features:

[0009] In the above technical scheme, the first hydraulic control system includes: a first hydraulic pump, provided with a first oil outlet, and the first hydraulic pump is connected to the oil tank; a second hydraulic pump, provided with a second oil outlet, and the first hydraulic pump is connected to the oil tank; a first one-way valve, having an oil inlet end and an oil outlet end, the oil inlet end of the first one-way valve is connected to the first oil outlet, and the oil outlet end of the first one-way valve is connected to the reversing mechanism for supplying oil to the reversing mechanism; a second one-way valve, having an oil inlet end and an oil outlet end, the oil inlet end of the second one-way valve is connected to the second oil outlet, and the oil outlet end of the second one-way valve is connected to the working mechanism for supplying oil to the working mechanism.

[0010] In this technical solution, two oil pipes of the first one-way valve and the second one-way valve are used to directly supply oil to the reversing mechanism and the working mechanism in one direction. After the two oil pipes are connected from the oil outlet end of the first one-way valve and the oil outlet end of the second one-way valve, they are directly connected to the oil inlet pipes of the reversing mechanism and the working mechanism, thereby simplifying the hydraulic control of the reversing mechanism and the working mechanism by the first hydraulic control system and reducing the possibility of misoperation. In this embodiment, by controlling the three-way ball valve separately, there are four permutations and combinations of operation modes, two of which are effective combinations, thereby simplifying the operation.

[0011] In any of the above technical solutions, the second hydraulic control system includes: a third hydraulic pump, provided with a third oil outlet, and the second hydraulic pump is connected to the oil tank; a fourth hydraulic pump, provided with a fourth oil outlet, and the second hydraulic pump is connected to the oil tank; a first three-way valve, having an oil inlet and two oil outlets, the oil inlet of the first three-way valve is connected to the third oil outlet, one of the oil outlets of the first three-way valve is connected to the reversing mechanism for supplying oil to the reversing mechanism, and the other oil outlet of the first three-way valve is connected to the oil tank for returning oil; a second three-way valve, having an oil inlet and two oil outlets, the oil inlet of the second three-way valve is connected to the fourth oil outlet, one of the oil outlets of the second three-way valve is connected to the working mechanism for supplying oil to the working mechanism, and the other oil outlet of the second three-way valve is connected to the oil tank for returning oil; wherein the oil outlet end of the first one-way valve is connected to the oil circuit of the first three-way valve to the reversing mechanism through an oil circuit, and the oil outlet end of the second one-way valve is connected to the oil circuit of the second three-way valve to the working mechanism through an oil circuit.

[0012] In this technical solution, the third hydraulic pump and the fourth hydraulic pump are both double gear pumps, and a reversing hydraulic system and a stirring hydraulic system with two three-way valves and two one-way valves are used. After the first oil outlet passes through the first one-way valve, the pressure oil enters the reversing mechanism, and after the second oil outlet passes through the first one-way valve, the pressure oil enters the working mechanism. The third oil outlet is directly connected to the middle oil inlet of the first three-way valve, the fourth oil outlet is connected to the middle oil inlet of the second three-way valve, one side of the oil outlet of the first three-way valve is connected to the oil tank, one side of the oil outlet of the second three-way valve is connected to the oil tank, and the other side of the oil outlet of the first three-way valve is connected to the first oil outlet, that is, a first oil circuit is set after the first oil outlet discharges oil, and the other side of the oil outlet of the first three-way valve discharges oil and leads to a second oil circuit set in the reversing mechanism, and the first oil circuit and the second oil circuit intersect. After the intersection, the pressure oil enters the reversing mechanism. Similarly, the oil outlet on the other side of the second three-way valve is connected to the second oil outlet, that is, the third oil circuit is set after the oil is discharged from the second oil outlet, and the oil outlet on the other side of the second three-way valve is connected to the fourth oil circuit set to the reversing mechanism after the oil is discharged, and the third oil circuit and the fourth oil circuit intersect. After the intersection, the pressure oil enters the working mechanism. By operating the first three-way valve and the second three-way valve to switch to different working positions, it can be selected whether the oil output of the third hydraulic pump and the fourth hydraulic pump returns to the oil tank or enters the reversing mechanism and the working mechanism respectively. Compared with the technology, the combination is simplified, which can reduce misoperation and improve the reliability of the system.

[0013] In any of the above technical solutions, the first three-way valve also includes: a first valve core; a first handle connected to the first valve core; wherein the first three-way valve is a mechanical three-way valve, and the first handle is used to drive the first valve core to switch the working position.

[0014] In this technical solution, the first three-way valve is a mechanical three-way valve, for example, a three-way ball valve. The mechanical three-way valve is used as a switching control element, which can be adjusted manually, simplifying the design structure and saving costs. The first valve core is arranged in the first three-way valve, and a first handle is arranged on the first three-way valve. The first valve core is driven by rotating the first handle, so that the first handle drives the first valve core to rotate, thereby switching the working position.

[0015] In any of the above technical solutions, the second three-way valve also includes: a second valve core; a second handle connected to the second valve core; wherein the second three-way valve is a mechanical three-way valve, and the second handle is used to drive the second valve core to switch the working position.

[0016] In this technical solution, the second three-way valve is a mechanical three-way valve, for example, a three-way ball valve. The mechanical three-way valve is used as a direction control element, which can be adjusted manually, which can simplify the design structure and save costs. The second valve core is arranged in the second three-way valve, and a second handle is arranged on the second three-way valve. By rotating the second handle, the second handle drives the second valve core to rotate, so that the flow of the second three-way valve can be adjusted. The first three-way valve and the second three-way valve are both three-way ball valves, and the first handle and the second handle are used to perform corresponding operations respectively, so as to realize the control of the first three-way valve and the second three-way valve respectively. This separate operation method can further avoid possible misoperation and improve the reliability of the flow control of the first three-way valve and the second three-way valve.

[0017] In any of the above technical solutions, the two ends of the connecting member are respectively connected to the first valve core and the second valve core, wherein the first handle can synchronously switch the working positions of the first three-way valve and the second three-way valve through the connecting member.

[0018] In this technical solution, when the first three-way valve and the second three-way valve are both mechanical three-way valves, for example, the mechanical three-way valve is a three-way ball valve, the connecting piece can be made into a double-headed rotating shaft structure, and the first valve core and the second valve core are connected at both ends of the connecting piece, respectively. By controlling the connecting piece by the first handle, the oil inlet and / or oil outlet of the first three-way valve and the second three-way valve can be synchronously controlled, which simplifies the operation steps and process and further avoids misoperation. Therefore, by stacking and assembling two three-way ball valves and installing the connecting piece, the first handle realizes the synchronous operation of the first three-way valve and the second three-way valve, thereby achieving mechanical synchronous control and interlocking control.

[0019] In any of the above technical solutions, the second hydraulic control system also includes: a first oil return pipe, connected to an oil return position of the first three-way valve; a second oil return pipe, connected to an oil return position of the second three-way valve; an oil return main pipe, one end of which is connected to the first oil return pipe and the second oil return pipe respectively, and the other end of the oil return main pipe is connected to the oil tank, for the first three-way valve and the second three-way valve to return oil to the oil tank.

[0020] In this technical solution, the first oil return pipe and the second oil return pipe are respectively connected to the oil return position of the first three-way valve and the oil return position of the second three-way valve, that is, the first three-way valve and the second three-way valve return oil respectively and then gather in the main oil return pipe, and then return oil to the oil tank, reducing the number of return oil pipelines directly connected to the oil tank, making the structure of the oil return system more compact.

[0021] In any of the above technical solutions, the second three-way valve is a hydraulically controlled reversing valve, which also has an oil level control function for controlling the working position of the second three-way valve; wherein the dual-power hydraulic system also includes a third oil return pipe, one end of which is connected to the oil outlet position of the first three-way valve, and the other end extends into the oil tank to return oil to the oil tank.

[0022] In this technical solution, the second three-way valve is a hydraulically controlled reversing valve. In addition to an oil inlet position and two oil outlet positions, the hydraulically controlled reversing valve also has an oil control position. The oil inlet position and one oil outlet position of the hydraulically controlled reversing valve are used to take oil from the oil tank and supply oil to the working mechanism respectively, and there is also an oil outlet position for returning oil to the oil tank. The second three-way valve adopts a hydraulically controlled reversing valve, which can realize automatic flow control. A spring is installed at one end of the valve core of the hydraulically controlled reversing valve, and control hydraulic oil is introduced into the control chamber at the other end. When the first three-way valve is operated, under the action of the control hydraulic oil, the hydraulically controlled reversing valve will make corresponding actions, so that the first three-way valve can be controlled by the first handle, so as to achieve the purpose of synchronously controlling the first three-way valve and the second three-way valve. Since the operation of the first handle is reduced and synchronous control can be achieved, the operation is further simplified. The two three-way valves in the second hydraulic control system are composed of a three-way ball valve and a hydraulically controlled reversing valve. The hydraulically controlled reversing valve is controlled by hydraulic control oil to achieve synchronous control of the hydraulics, and synchronous operation of the first three-way valve and the second three-way valve is achieved, thereby achieving mechanical synchronous control and interlocking control.

[0023] In any of the above technical solutions, the second hydraulic control system also includes: a first oil inlet pipe, connected to the oil inlet position of the first three-way valve; a second oil inlet pipe, connected to the oil control position; an oil inlet main pipe, one end of which is connected to the third oil outlet, and the other end is respectively connected to the first oil inlet pipe and the second oil inlet pipe, so as to respectively supply oil to the oil control position of the first three-way valve and the hydraulically controlled reversing valve.

[0024] In this technical solution, the second oil inlet pipe is connected to the oil control position of the hydraulically controlled reversing valve, and the oil enters the control chamber of the hydraulically controlled reversing valve. The oil is respectively supplied to the first three-way valve and the control chamber through the oil inlet main pipe. This ensures that when the first three-way valve is operated, the hydraulically controlled reversing valve completes the corresponding action under the action of the controlled hydraulic oil, thereby ensuring synchronous control.

[0025] To achieve the second purpose of the present invention, an embodiment of the present invention provides a vehicle-mounted pump for a reversing mechanism and a working mechanism of a vehicle body, and the vehicle-mounted pump includes: a chassis power system; a superstructure power system; a dual-power hydraulic control system in any embodiment, which is respectively connected to the chassis power system and the superstructure power system; wherein the first hydraulic control system is connected to the superstructure power system, and the second hydraulic control system is connected to the chassis power system.

[0026] The vehicle-mounted pump of the embodiment of the present invention has the dual-power hydraulic control system of any embodiment of the present invention. Therefore, the vehicle-mounted pump of the embodiment of the present invention has all the beneficial effects of the dual-power hydraulic control system of any embodiment of the present invention, which will not be repeated here.

[0027] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a dual-power hydraulic system according to an embodiment of the related art;

[0029] Figure 2 A schematic diagram of the working principle of a dual-power hydraulic system according to an embodiment of the related art;

[0030] Figure 3 A schematic diagram of the structure of a dual-power hydraulic control system according to an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the working principle of a dual-power hydraulic control system according to an embodiment of the present invention;

[0032] Figure 5 A schematic structural diagram of a dual-power hydraulic control system according to another embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the working principle of a dual-power hydraulic control system according to another embodiment of the present invention;

[0034] Figure 7 A schematic structural diagram of a dual-power hydraulic control system according to another embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the working principle of a dual-power hydraulic control system according to yet another embodiment of the present invention.

[0036] in, Figure 1 to Figure 2 The corresponding relationship between the reference numerals and component names in the figure is:

[0037] 100': dual-power hydraulic system, 110': hydraulic box, 122': first oil port, 120': first gear pump, 130': second gear pump, 132': second oil port, 140': first one-way valve, 142': second one-way valve, 144': third one-way valve, 146': fourth one-way valve, 150': first plate-type ball valve, 152': second plate-type ball valve, 154': third plate-type ball valve, 156': fourth plate-type ball valve, 200': reversing system, 300': stirring system.

[0038] in, Figures 3 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0039] 100: dual power hydraulic control system, 110: oil tank, 120: first hydraulic control system, 122: first hydraulic pump, 1222: first oil outlet, 124: first check valve, 126: second check valve, 128: second hydraulic pump, 1282: second oil outlet, 130: second hydraulic control system, 1302: connecting piece, 1304: first handle, 1308: second handle, 1312: first oil return pipe, 1314 : Second oil return pipe, 1316: Oil return main pipe, 1318: Third oil return pipe, 132: Third hydraulic pump, 1320: First oil inlet pipe, 1322: Third oil outlet, 1324: Oil inlet main pipe, 1326: Second oil inlet pipe, 134: First three-way valve, 136: Second three-way valve, 1362: Oil level control, 138: Fourth hydraulic pump, 1382: Fourth oil outlet, 200: Reversing mechanism, 300: Working mechanism. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0042] Specific combination Figure 1 and Figure 2 As shown, the specific working conditions and corresponding control methods of the dual-power hydraulic system 100' are as follows:

[0043] The first working condition: when the upper power system of the vehicle-mounted pump is pumping alone, the two first oil ports 122' of the first gear pump 120' operate, and the second oil port 132' of the second gear pump 130' does not operate. The right position of the first plate-type ball valve 150' and the right position of the third plate-type ball valve 154' operate, and the oil circuit is disconnected; the left position of the second plate-type ball valve 152' and the left position of the fourth plate-type ball valve 156' operate, and the oil circuit is connected. At this time, the oil from the first oil port 122' of the first gear pump 120' enters the reversing system 200' through the first one-way valve 140', and the oil from the other first oil port 122' of the first gear pump 120' enters the stirring system 300' through the third one-way valve 144'.

[0044] The second working condition: when the chassis power system of the vehicle-mounted pump is pumping alone, the two second oil ports 132' of the second gear pump 130' operate, and the two first oil ports 122' of the first gear pump 120' do not operate. The left position of the first plate-type ball valve 150' and the left position of the third plate-type ball valve 154' work, the oil circuit is connected, the right position of the second plate-type ball valve 152' and the right position of the fourth plate-type ball valve 156' work, and the oil circuit is disconnected. At this time, the oil from one of the second oil ports 132' of the second gear pump 130' enters the reversing system 200' through the second one-way valve 142', and the oil from the other second oil port 132' of the second gear pump 130' enters the stirring system 300' through the fourth one-way valve 146'.

[0045] The third working condition: when the upper power system and the chassis power system of the vehicle-mounted pump work at the same time, the two first oil ports 122' of the first gear pump 120' and the second oil port 132' of the second gear pump 130' operate at the same time. Since the reversing system 200' and the stirring system 300' only need the flow of a single first gear pump 120' or second gear pump 130', there are two situations:

[0046] 1. The first plate ball valve 150', the second plate ball valve 152', the third plate ball valve 154' and the fourth plate ball valve 156' can select working positions according to the first working condition. At this time, the two first oil ports 122' are consistent with the first working condition, and the two second oil ports 132' return to the hydraulic box 110' through the second plate ball valve 152' and the fourth plate ball valve 156' respectively.

[0047] 2. The first plate ball valve 150', the second plate ball valve 152', the third plate ball valve 154' and the fourth plate ball valve 156' can select working positions according to the second working condition. At this time, the two second oil ports 132' are consistent with the second working condition, and the two first oil ports 122 return to the oil tank through the first plate ball valve 150' and the third plate ball valve 154' respectively.

[0048] It can be seen that the dual-power hydraulic system 100' in the related art not only has many control combinations and is prone to misoperation, but also has technical problems such as large component size, high cost, heavy weight, complex piping, and inconvenient installation and maintenance.

[0049] Refer to the following Figures 3 to 8 The technical solutions of some embodiments of the present invention are described.

[0050] Example 1

[0051] like Figure 3 As shown, this embodiment provides a dual-power hydraulic control system 100, which is used to supply oil to the reversing mechanism 200 and the working mechanism 300 respectively to provide control power. The dual-power hydraulic control system 100 includes: an oil tank 110, a first hydraulic control system 120 and a second hydraulic control system 130. The first hydraulic control system 120 is connected to the oil tank 110, and the first hydraulic control system 120 directly supplies oil to the reversing mechanism 200 and the working mechanism 300 respectively in one direction through a one-way valve to provide power; and the second hydraulic control system 130 is connected to the oil tank 110, and the second hydraulic control system 130 supplies oil to the reversing mechanism 200 and the working mechanism 300 respectively through a control valve or returns oil to the oil tank 110.

[0052] In this embodiment, the working mechanism 300 can be a stirring mechanism, and the oil inlet position of the reversing mechanism 200 and the oil inlet position of the working mechanism 300 are respectively connected to an oil inlet pipeline, the first hydraulic control system 120 directly supplies oil to the reversing mechanism 200 and the working mechanism 300 respectively, and the second hydraulic control system 130 supplies oil or returns oil to the reversing mechanism 200 and the working mechanism 300 respectively, that is, the first hydraulic control system 120 and the second hydraulic control system 130 supply oil to the reversing mechanism 200 and the working mechanism 300 respectively through the oil inlet pipeline, and the first hydraulic control system 120 and the second hydraulic control system 130 supply oil to the reversing mechanism 200 and the working mechanism 300 respectively. The position where the control system 120 supplies oil to the reversing mechanism 200 and the working mechanism 300 is located after the position where the second hydraulic control system 130 supplies oil to the reversing mechanism 200 and the working mechanism 300. The second hydraulic control system 130 is switched to a different working position by operating the control valve. The oil output of the second hydraulic control system 130 can be selected to return to the oil tank 110 or to enter the reversing mechanism 200 and the working mechanism 300 respectively. Compared with the existing related technologies, the operation is simplified, no operational errors will be caused, and the reliability of the dual-power hydraulic control system 100 is improved.

[0053] Example 2

[0054] like Figure 3 and Figure 4 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0055] The first hydraulic control system 120 includes: a first hydraulic pump 122, a second hydraulic pump 128, a first check valve 124 and a second check valve 126. The first hydraulic pump 122 is provided with a first oil outlet 1222, and the first hydraulic pump 122 is connected to the oil tank 110; the second hydraulic pump 128 is provided with a second oil outlet 1282, and the first hydraulic pump 122 is connected to the oil tank 110; the first check valve 124 has an oil inlet end and an oil outlet end, and the oil inlet end of the first check valve 124 Connected to the first oil outlet 1222, the oil outlet end of the first one-way valve 124 is connected to the reversing mechanism 200, and is used to supply oil to the reversing mechanism 200; the second one-way valve 126 has an oil inlet end and an oil outlet end, the oil inlet end of the second one-way valve 126 is connected to the second oil outlet 1282, and the oil outlet end of the second one-way valve 126 is connected to the working mechanism 300, and is used to supply oil to the working mechanism 300; wherein, the first hydraulic pump 122 and the second hydraulic pump 128 are upper power.

[0056] In this embodiment, the one-way valve includes a first one-way valve 124 and a second one-way valve 126, and two oil pipes are respectively used to directly supply oil to the reversing mechanism 200 and the working mechanism 300. After the two oil pipes are connected from the oil outlet end of the first one-way valve 124 and the oil outlet end of the second one-way valve 126, they are directly connected to the oil inlet pipes of the reversing mechanism 200 and the working mechanism 300, thereby simplifying the hydraulic control of the reversing mechanism 200 and the working mechanism 300 by the first hydraulic control system 120 and reducing the possibility of misoperation. In this embodiment, by controlling the three-way ball valve separately, there are four permutations and combinations of operation modes, two of which are effective combinations, thereby simplifying the operation.

[0057] Example 3

[0058] like Figure 3 and Figure 4 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0059] The second hydraulic control system 130 includes: a third hydraulic pump 132, a fourth hydraulic pump 138, a first three-way valve 134 and a second three-way valve 136. The third hydraulic pump 132 is provided with a third oil outlet 1322, and the third hydraulic pump 132 is connected to the oil tank 110; the fourth hydraulic pump 138 is provided with a fourth oil outlet 1382, and the second hydraulic pump is connected to the oil tank 110; the first three-way valve 134 has an oil inlet position and two oil outlet positions, the oil inlet position of the first three-way valve 134 is connected to the third oil outlet 1322, one of the oil outlet positions of the first three-way valve 134 is connected to the reversing mechanism 200, and is used to supply oil to the reversing mechanism 200, and the other oil outlet position of the first three-way valve 134 is connected to the reversing mechanism 200. An oil outlet is connected to the oil tank 110 for returning oil; the second three-way valve 136 has an oil inlet and two oil outlets, the oil inlet of the second three-way valve 136 is connected to the fourth oil outlet 1382, one of the oil outlets of the second three-way valve 136 is connected to the working mechanism 300 for supplying oil to the working mechanism 300, and the other oil outlet of the second three-way valve 136 is connected to the oil tank 110 for returning oil; wherein, the oil outlet end of the first one-way valve 124 is connected to the oil circuit of the first three-way valve 134 to the reversing mechanism 200 through an oil circuit, and the oil outlet end of the second one-way valve 126 is connected to the oil circuit of the second three-way valve 136 to the working mechanism 300 through an oil circuit.

[0060] In this embodiment, the third hydraulic pump 132 and the fourth hydraulic pump 138 are both double gear pumps, the control valves are the first three-way valve 134 and the second three-way valve 136, and a reversing hydraulic system and a stirring hydraulic system are adopted with two three-way ball valves and two one-way valves. After the first oil outlet 1222 passes through the first one-way valve 124, the pressure oil enters the reversing mechanism 200, and after the second oil outlet 1282 passes through the first one-way valve 124, the pressure oil enters the working mechanism 300. The third oil outlet 1322 is directly connected to the middle oil inlet of the first three-way valve 134, the fourth oil outlet 1382 is connected to the middle oil inlet of the second three-way valve 136, one side oil outlet of the first three-way valve 134 is connected to the oil tank 110, one side oil outlet of the second three-way valve 136 is connected to the oil tank 110, and the other side oil outlet of the first three-way valve 134 is connected to the first oil outlet 1222, that is, the first oil circuit is set after the first oil outlet 1222 discharges oil, and the other side oil outlet of the first three-way valve 134 is connected to the second oil circuit set in the reversing mechanism 200 after the oil discharges oil, and the first oil circuit and the second oil circuit intersect. After the intersection, the pressure oil enters the reversing mechanism 200. Similarly, the oil outlet on the other side of the second three-way valve 136 is connected to the second oil outlet 1282, that is, the third oil circuit is set after the second oil outlet 1282 discharges oil, and the oil outlet on the other side of the second three-way valve 136 is connected to the reversing mechanism 200 to set the fourth oil circuit, and the third oil circuit and the fourth oil circuit intersect. After the intersection, the pressure oil enters the working mechanism 300. By operating the first three-way valve 134 and the second three-way valve 136 to switch to different working positions, it can be selected whether the oil output of the third hydraulic pump 132 and the fourth hydraulic pump 138 returns to the oil tank 110 or enters the reversing mechanism 200 and the working mechanism 300 respectively. Compared with the technology, the combination is simplified, which can reduce misoperation and improve the reliability of the system.

[0061] In this embodiment, the specific working conditions and corresponding control methods are as follows:

[0062] When the power of a carrier pump is pumped alone, the first hydraulic pump 122 and the second hydraulic pump 128 are running, the first oil outlet 1222 and the second oil outlet 1282 are discharging oil, and the third hydraulic pump 132 and the fourth hydraulic pump 138 are not running. The right position of the first three-way valve 134 and the right position of the second three-way valve 136 are working, and the oil circuit is disconnected. At this time, the first oil outlet 1222 connected to the first check valve 124 discharges oil through the first check valve 124 and enters the reversing mechanism 200, and the second oil outlet 1282 connected to the second check valve 126 discharges oil through the second check valve 126 and enters the stirring mechanism.

[0063] When the two vehicle-mounted pump chassis power is pumped separately, the third hydraulic pump 132 and the fourth hydraulic pump 138 are running, the third oil outlet 1322 and the fourth oil outlet 1382 are discharging oil, and the first hydraulic pump 122 and the second hydraulic pump 128 are not running. The left position of the first three-way valve 134 and the left position of the second three-way valve 136 are working, and the oil circuit is connected. At this time, the third oil outlet 1322 connected to the first three-way valve 134 discharges oil through the first three-way valve 134 and enters the reversing mechanism 200, and the fourth oil outlet 1382 connected to the second three-way valve 136 discharges oil through the second three-way valve 136 and enters the stirring mechanism.

[0064] When the chassis power and the upper power of the three-vehicle pumps work at the same time, the first hydraulic pump 122, the second hydraulic pump 128, the third hydraulic pump 132, and the fourth hydraulic pump 138 operate at the same time, that is, the first oil outlet 1222, the second oil outlet 1282, the third oil outlet 1322, and the fourth oil outlet 1382 discharge oil. Because the reversing mechanism 200 and the stirring mechanism only require the flow of a double gear pump, at this time, the first three-way valve 134 and the second three-way valve 136 are operated according to working condition one and work in the right position. At this time, the first oil outlet 1222 connected to the first one-way valve 124 discharges oil through the first one-way valve 124 into the reversing mechanism 200, and the second oil outlet 1282 connected to the second one-way valve 126 discharges oil through the second one-way valve 126 into the stirring mechanism. The third oil outlet 1322 connected to the first three-way valve 134 outputs oil to the oil tank 110 through the first three-way valve 134 , and the fourth oil outlet 1382 connected to the second three-way valve 136 outputs oil to the oil tank 110 through the second three-way valve 136 .

[0065] In this embodiment, the first three-way valve 134 and the second three-way valve 136 can be interchanged with the first check valve 124 and the second check valve 126 to achieve the same technical effect, which will not be described in detail here.

[0066] Example 4

[0067] like Figure 3 and Figure 4 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0068] The first three-way valve 134 further includes: a first valve core and a first handle 1304, and the first handle 1304 is connected to the first valve core; wherein the first three-way valve 134 is a mechanical three-way valve, and the first handle 1304 is used to drive the first valve core to switch the working position.

[0069] In this embodiment, the first three-way valve 134 is a mechanical three-way valve, for example, a three-way ball valve. The mechanical three-way valve is used as a reversing control element, which can be adjusted manually, thereby simplifying the design structure and saving costs. The first valve core is arranged in the first three-way valve 134, and a first handle 1304 is arranged on the first three-way valve 134. The first valve core is driven by rotating the first handle 1304, so that the first handle 1304 drives the first valve core to rotate, thereby switching the working position.

[0070] Example 5

[0071] like Figure 3 and Figure 4 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0072] The second three-way valve 136 also includes: a second valve core; a second handle 1308 connected to the second valve core; wherein the second three-way valve 136 is a mechanical three-way valve, and the second handle 1308 is used to drive the second valve core to switch the working position.

[0073] In this embodiment, the second three-way valve 136 is a mechanical three-way valve, for example, a three-way ball valve. The mechanical three-way valve is used as a direction control element, which can be adjusted manually, which can simplify the design structure and save costs. The second valve core is arranged in the second three-way valve 136, and a second handle 1308 is arranged on the second three-way valve 136. By rotating the second handle 1308, the second handle 1308 drives the second valve core to rotate, so that the flow of the second three-way valve 136 can be adjusted. The first three-way valve 134 and the second three-way valve 136 are both three-way ball valves, and the first handle 1304 and the second handle 1308 are respectively operated accordingly, so that the first three-way valve 134 and the second three-way valve 136 are respectively controlled. This separate operation method can further avoid possible misoperation and improve the reliability of the flow control of the first three-way valve 134 and the second three-way valve 136.

[0074] Example 6

[0075] like Figure 5 and Figure 6 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0076] The dual-power hydraulic control system 100 also includes: a connecting member 1302 , both ends of which are connected to the first valve core and the second valve core respectively; wherein the first handle 1304 synchronously switches the working positions of the first three-way valve 134 and the second three-way valve 136 through the connecting member 1302 .

[0077] In this embodiment, when the first three-way valve 134 and the second three-way valve 136 are both mechanical three-way valves, for example, the mechanical three-way valve is a three-way ball valve, the connecting member 1302 can be made into a double-headed rotating shaft structure, and the two ends of the connecting member 1302 are respectively connected to the first valve core and the second valve core. By controlling the connecting member 1302 by the first handle 1304, the oil inlet and / or oil outlet of the first three-way valve 134 and the second three-way valve 136 can be synchronously controlled, which simplifies the operation steps and process and further avoids misoperation. Therefore, by stacking and assembling two three-way ball valves, by installing the connecting member 1302, the first handle 1304 is used to realize the synchronous operation of the first three-way valve 134 and the second three-way valve 136, thereby achieving mechanical synchronous control and interlocking control.

[0078] The hydraulic control principle in this embodiment is roughly the same as that in Embodiments 3 to 5, except that in this embodiment, two three-way ball valves are assembled together to form a stacked three-way ball valve. The valve body structure of the three-way ball valve is consistent with the original structure, except that the rotating shaft connected to the valve core is processed into a double-headed rotating shaft. The double-headed rotating shaft can be understood as being processed from two ordinary rotating shafts, and it is a through-shaft structure. The two ends of the double-headed rotating shaft are respectively installed in the valve bodies of the upper and lower three-way ball valves, thereby realizing synchronous control of the two three-way ball valves. The first handle 1304 is installed in the middle of the double-headed rotating shaft. Operating the first handle 1304 allows the two three-way ball valves to move synchronously, making the operation simpler and more reliable.

[0079] Example 7

[0080] like Figure 5 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0081] The second hydraulic control system 130 also includes: a first oil return pipe 1312, a second oil return pipe 1314 and an oil return main pipe 1316, the first oil return pipe 1312 is connected to an oil return position of the first three-way valve 134; the second oil return pipe 1314 is connected to an oil return position of the second three-way valve 136; one end of the oil return main pipe 1316 is connected to the first oil return pipe 1312 and the second oil return pipe 1314 respectively, and the other end of the oil return main pipe 1316 is connected to the oil tank 110, and is used for the first three-way valve 134 and the second three-way valve 136 to return oil to the oil tank 110.

[0082] In this embodiment, the first oil return pipe 1312 and the second oil return pipe 1314 are respectively connected to the oil return position of the first three-way valve 134 and the oil return position of the second three-way valve 136, that is, the first three-way valve 134 and the second three-way valve 136 return oil respectively and then are collected in the oil return main pipe 1316, and then return oil to the oil tank 110, reducing the number of return oil pipelines directly connected to the oil tank 110, making the structure of the oil return system more compact.

[0083] Example 8

[0084] like Figure 7 and Figure 8 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0085] The second three-way valve 136 is a hydraulically controlled reversing valve, which also has an oil control level 1362 for controlling the working position of the second three-way valve 136; the dual-power hydraulic control system 100 also includes a third oil return pipe 1318, one end of the third oil return pipe 1318 is connected to the oil outlet position of the first three-way valve 134, and the other end extends into the oil tank 110, and can return oil to the oil tank 110.

[0086] In this embodiment, the second three-way valve 136 is a hydraulically controlled reversing valve. In addition to an oil inlet position and two oil outlet positions, the hydraulically controlled reversing valve also has an oil control position 1362. The oil inlet position and one oil outlet position of the hydraulically controlled reversing valve are used to take oil from the oil tank 110 and supply oil to the working mechanism 300, respectively, and there is another oil outlet position for returning oil to the oil tank 110. The second three-way valve 136 adopts a hydraulically controlled reversing valve, which can realize automatic flow control. A spring is installed at one end of the valve core of the hydraulically controlled reversing valve, and control hydraulic oil is introduced into the control chamber at the other end. When the first three-way valve 134 is operated, under the action of the control hydraulic oil, the hydraulically controlled reversing valve will make corresponding actions, so that the first three-way valve 134 is controlled by the first handle 1304, so as to achieve the purpose of synchronously controlling the first three-way valve 134 and the second three-way valve 136. Since the operation of the first handle 1304 is reduced and synchronous control can be achieved, the operation is further simplified. The two three-way valves in the second hydraulic control system 130 are composed of a three-way ball valve and a hydraulically controlled reversing valve. The hydraulically controlled reversing valve is controlled by hydraulic control oil to achieve synchronous control of the hydraulics, thereby achieving synchronous operation of the first three-way valve 134 and the second three-way valve 136, thereby achieving mechanical synchronous control and interlocking control.

[0087] The working principle of this embodiment is different from that of Embodiments 3 to 5 in that when the first three-way valve 134 works in the right position, the hydraulic oil of the third oil outlet 1322 connected to the first three-way valve 134 directly returns to the oil tank 110 through the first three-way valve 134, and the hydraulic control reversing valve works in the right position under the action of the return spring. The hydraulic oil of the fourth oil outlet 1382 connected to the hydraulic control reversing valve directly returns to the oil tank 110. When the first three-way valve 134 works in the left position, the hydraulic oil of the third oil outlet 1322 connected to the first three-way valve 134 passes through the first three-way valve 134 to the reversing mechanism 200. At this time, the pipeline pressure of the third oil outlet 1322 connected to the first three-way valve 134 increases, and the pressure oil enters the hydraulic reversing valve through the second oil inlet pipe 1326 and pushes the valve core to move right. The hydraulic control reversing valve works in the left position. At this time, the hydraulic oil of the second oil outlet 1282 connected to the second check valve 126 passes through the hydraulic control reversing valve to the stirring mechanism. So as to meet different working conditions.

[0088] Example 9

[0089] like Figure 7 As shown, this embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0090] The second hydraulic control system 130 also includes: a first oil inlet pipe 1320, a second oil inlet pipe 1326 and an oil inlet main pipe 1324, the first oil inlet pipe 1320 is connected to the oil inlet position of the first three-way valve 134; the second oil inlet pipe 1326 is connected to the oil control position 1362; one end of the oil inlet main pipe 1324 is connected to the third oil outlet 1322, and the other end is connected to the first oil inlet pipe 1320 and the second oil inlet pipe 1326 respectively, so as to respectively supply oil to the first three-way valve 134 and the oil control position 1362 of the hydraulically controlled reversing valve.

[0091] In this embodiment, the second oil inlet pipe 1326 is connected to the oil control level 1362 of the hydraulically controlled reversing valve, and the oil enters the control chamber of the hydraulically controlled reversing valve. Through the oil inlet main pipe 1324, the oil is simultaneously supplied to the oil control levels of the first three-way valve 134 and the second three-way valve 136 respectively. This ensures that when the first three-way valve 134 is operated, the hydraulically controlled reversing valve completes the corresponding action under the action of the controlled hydraulic oil, thereby ensuring synchronous control.

[0092] Example 10

[0093] This embodiment provides a dual-power hydraulic control system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0094] A vehicle-mounted pump is used for a reversing mechanism 200 and a working mechanism 300 of a vehicle body. The vehicle-mounted pump includes: a chassis power system, a superstructure power system and a dual-power hydraulic control system 100 in any embodiment, wherein a first hydraulic control system 120 is connected to the superstructure power system, and a second hydraulic control system 130 is connected to the chassis power system.

[0095] The vehicle-mounted pump of the embodiment of the present invention has the dual-power hydraulic control system of any embodiment of the present invention, so the vehicle-mounted pump of the embodiment of the present invention has all the beneficial effects of the dual-power hydraulic control system of any embodiment of the present invention, which will not be repeated here.

[0096] In summary, the beneficial effects of the embodiments of the present invention are:

[0097] 1. The control of the present invention is simple and reliable. When the first three-way valve 134 and the second three-way valve 136 are controlled respectively by the first handle 1304 and the second handle 1308, there are four combinations of operation modes, two of which are effective combinations, thereby simplifying the operation.

[0098] 2. The combination of the first one-way valve 124 and the second one-way valve 126 and the first three-way valve 134 and the second three-way valve 136 has a small weight and low cost.

[0099] 3. The control pipeline in the present invention is simple and easy to install.

[0100] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0102] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-power hydraulic control system, used to supply oil to a reversing mechanism and a working mechanism to provide power, characterized in that: The dual-power hydraulic control system includes: tank; A first hydraulic control system is connected to the oil tank, and the first hydraulic control system directly supplies oil to the reversing mechanism and the working mechanism through a one-way valve to provide power; and a second hydraulic control system, connected to the oil tank, and the second hydraulic control system supplies oil to the reversing mechanism and the working mechanism respectively or returns oil to the oil tank through a control valve; The first hydraulic control system comprises: A first hydraulic pump is provided with a first oil outlet, wherein the first hydraulic pump is connected to the oil tank; a second hydraulic pump, provided with a second oil outlet, wherein the second hydraulic pump is in communication with the oil tank; A first one-way valve has an oil inlet end and an oil outlet end, wherein the oil inlet end of the first one-way valve is connected to the first oil outlet, The oil outlet end of the first one-way valve is connected to the reversing mechanism for supplying oil to the reversing mechanism; The second one-way valve has an oil inlet end and an oil outlet end, and the oil inlet end of the second one-way valve is connected to the second oil outlet. The oil outlet end of the second one-way valve is connected to the working mechanism and is used to supply oil to the working mechanism; The second hydraulic control system comprises: A third hydraulic pump is provided with a third oil outlet, and the third hydraulic pump is connected to the oil tank; a fourth hydraulic pump, provided with a fourth oil outlet, the fourth hydraulic pump being in communication with the oil tank; The first three-way valve has an oil inlet position and two oil outlet positions, the oil inlet position of the first three-way valve is connected to the third oil outlet, and one of the oil outlet positions of the first three-way valve is connected to the reversing mechanism for supplying oil to the reversing mechanism. Another oil outlet of the first three-way valve is connected to the oil tank for oil return; The second three-way valve has an oil inlet position and two oil outlet positions, the oil inlet position of the second three-way valve is connected to the fourth oil outlet, and one of the oil outlet positions of the second three-way valve is connected to the working mechanism for supplying oil to the working mechanism. Another oil outlet of the second three-way valve is connected to the oil tank for oil return; Among them, the oil outlet end of the first one-way valve is connected to the oil circuit of the first three-way valve leading to the reversing mechanism through an oil circuit, and the oil outlet end of the second one-way valve is connected to the oil circuit of the second three-way valve leading to the working mechanism through an oil circuit.

2. The dual-power hydraulic control system according to claim 1, characterized in that: The first three-way valve further comprises: The first valve core; A first handle connected to the first valve core; Wherein, the first three-way valve is a mechanical three-way valve, and the first handle is used to drive the first valve core to switch the working position.

3. The dual-power hydraulic control system according to claim 2, characterized in that: The second three-way valve further comprises: Second valve core; a second handle connected to the second valve core; Wherein, the second three-way valve is a mechanical three-way valve, and the second handle is used to drive the second valve core to switch the working position.

4. The dual-power hydraulic control system according to claim 2, characterized in that: Also includes: A connecting member, wherein the second three-way valve further comprises a second valve core; two ends of the connecting member are respectively connected to the first valve core and the second valve core; Wherein, the first handle synchronously switches the working positions of the first three-way valve and the second three-way valve through the connecting piece.

5. The dual-power hydraulic control system according to any one of claims 2 to 4, characterized in that: The second hydraulic control system also includes: A first oil return pipe connected to an oil outlet of the first three-way valve; a second oil return pipe connected to an oil outlet of the second three-way valve; An oil return main pipe has one end connected to the first oil return pipe and the second oil return pipe respectively, and the other end of the oil return main pipe is connected to the oil tank, and is used for the first three-way valve and the second three-way valve to return oil to the oil tank.

6. The dual-power hydraulic control system according to claim 2, characterized in that: The second three-way valve is a hydraulically controlled reversing valve, and the hydraulically controlled reversing valve also has an oil level control function for controlling the working position of the second three-way valve; Among them, the dual-power hydraulic control system also includes a third oil return pipe, one end of which is connected to the oil outlet of the first three-way valve, and the other end extends into the oil tank to return oil to the oil tank.

7. The dual-power hydraulic control system according to claim 6, characterized in that: The second hydraulic control system also includes: A first oil inlet pipe connected to the oil inlet position of the first three-way valve; a second oil inlet pipe connected to the oil level control; The oil inlet main pipe has one end connected to the third oil outlet and the other end connected to the first oil inlet pipe and the second oil inlet pipe respectively, so as to supply oil to the oil control positions of the first three-way valve and the hydraulically controlled reversing valve respectively.

8. A vehicle-mounted pump, used for the reversing mechanism and working mechanism of a vehicle body, characterized in that: The vehicle-mounted pump comprises: Chassis power system; Upper power system; The dual-power hydraulic control system according to any one of claims 1 to 7; Wherein, the first hydraulic control system is connected to the upper body power system, and the second hydraulic control system is connected to the chassis power system.

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