Hydraulic drive workbench

Abstract

The utility model discloses a hydraulic drive workbench which comprises a mounting frame, a mounting plate, a drive device, a hydraulic pump, an oil tank, a controller, a load control valve group and at least one switching valve group, the drive device is connected with the hydraulic pump, and the hydraulic pump is respectively connected with the oil tank and the load control valve group through oil ways. A control valve block of the load control valve set is connected with an oil way of the switching valve set, the controller is electrically connected with the load control valve set and the switching valve set, and the controller is used for electrically controlling the load control valve set and the switching valve set. The control valve block of the load control valve group is correspondingly connected with the switching valve group, so that one switching valve group can be correspondingly connected with two loads. Under the condition that two loads do not need to work at the same time, the switching valve group can output hydraulic oil to one of the loads needing to work, so that one control valve block can control the two loads, the number of control valve blocks in the load control valve group is reduced, the working efficiency is higher, and the cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulics, in particular to a hydraulic-driven workbench. Background Art

[0002] A hydraulic pump station is a hydraulic device composed of a hydraulic pump, a driving device, an oil tank, and various control valves. It supplies oil according to the flow direction, pressure, and flow rate required by the driving device, and is applicable to various machines where the driving device is separated from the hydraulic pump station. Connect the hydraulic pump station and the driving device with a pipeline, and the hydraulic system can achieve various specified actions. The proportional valve, full name electro-hydraulic proportional valve, is a commonly used control valve in the hydraulic pump station. The proportional valve can convert the input electrical signal into force or displacement in proportion, so as to continuously control parameters such as pressure and flow rate. When there are more loads to be driven, a multi-way proportional valve is generally used. Each valve block in the multi-way proportional valve is correspondingly connected to a load, so as to achieve centralized control of multiple loads.

[0003] In the actual working process, there are often situations where the loads do not work simultaneously. For example, two loads are used alternately, or due to process or construction specifications, the two loads cannot work simultaneously. In this case, if a multi-way proportional valve is still used to connect each load to a corresponding valve block, there will be a phenomenon that some valve blocks are always in an idle state, reducing the working efficiency of the entire hydraulic pump station. Moreover, the more the number of valve blocks, the higher the cost of the multi-way proportional valve, that is, the higher the cost of the hydraulic pump station. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a hydraulic-driven workbench, which solves the problems of low working efficiency and high cost of the existing hydraulic pump station.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is to provide a hydraulic-driven workbench, including a mounting frame, a mounting plate, a driving device, a hydraulic pump, an oil tank, a controller, a load control valve group, and at least one switching valve group. The mounting plate is arranged in the middle of the mounting frame. The driving device and the hydraulic pump are arranged on the mounting frame and are located below the mounting plate. The driving device is connected to the hydraulic pump, and the driving device is used to drive the hydraulic pump to act. The oil tank, the controller, the load control valve group, and the switching valve group are arranged on the mounting plate. The hydraulic pump is respectively connected to the oil tank and the load control valve group through oil circuits. The hydraulic pump is used to output the hydraulic oil in the oil tank to the load control valve group. The control valve blocks of the load control valve group are connected to the switching valve group through oil circuits. The load control valve group is used to output the hydraulic oil to the switching valve group. The switching valve group is used to connect two loads through oil circuits and selectively output the hydraulic oil to any one of the loads. The controller is respectively electrically connected to the load control valve group and the switching valve group. The controller is used to electrically control the load control valve group and the switching valve group.

[0006] In some embodiments, it further includes a radiator which is arranged at the front end of the mounting bracket, located on the lower side of the mounting plate. The radiator is respectively connected to the oil return port of the load control valve group and the oil return port of the fuel tank through oil circuits. The radiator is used to cool the hydraulic oil in the load control valve group and then output it to the fuel tank.

[0007] In some embodiments, the load control valve group includes an oil distribution valve block, a control valve block, and an electromagnetic regulating valve. The oil inlet of the oil distribution valve block is connected to the oil outlet of the hydraulic pump, and the oil return port of the oil distribution valve block is connected to the oil return port of the fuel tank. The oil distribution valve block is communicated with the control valve block. The oil distribution valve block is used to distribute the hydraulic oil output from the hydraulic pump to each control valve block. The electromagnetic regulating valve is correspondingly connected to the control valve block and is also electrically connected to the controller. The electromagnetic regulating valve is used to regulate the oil pressure inside the control valve block. The control valve block is connected to the switching valve group through an oil circuit.

[0008] In some embodiments, the load control valve group further includes an adjusting handle which is connected to the electromagnetic regulating valve. The adjusting handle is used to manually control the electromagnetic regulating valve.

[0009] In some embodiments, the oil distribution valve block includes a pressure control oil port which is located at the front end of the oil distribution valve block. The pressure control oil port is connected to a relief valve. The relief valve is also connected to the fuel tank through an oil circuit and is also electrically connected to the controller.

[0010] In some embodiments, the switching valve group includes a switching valve block and an electromagnetic switching valve. The electromagnetic switching valve is connected to the switching valve block. The switching valve block is respectively connected to the load control valve group and two loads. The electromagnetic switching valve is connected to the controller. The electromagnetic switching valve is used to change the flow direction of the hydraulic oil inside the switching valve block.

[0011] In some embodiments, the switching valve block includes a switching oil inlet, a switching oil return port, a first output oil port, a first oil return port, a second output oil port, and a second oil return port. The switching oil inlet and the switching oil return port are both connected to the load control valve group. The first output oil port and the first oil return port are used to connect to one load, and the second output oil port and the second oil return port are used to connect to another load.

[0012] In some embodiments, the controller and the load control valve group are respectively located on the left front and right front of the mounting plate, and the fuel tank and the switching valve group are respectively located on the left rear and right rear of the mounting plate.

[0013] In some embodiments, an oil return filter is further provided on the fuel tank. The oil return filter is used to filter the hydraulic oil returning to the fuel tank.

[0014] In some embodiments, the radiator is an air-cooled radiator.

[0015] The beneficial effects of the present utility model are as follows: In the present utility model, by correspondingly connecting the control valve block of the load control valve group with the switching valve group, and one switching valve group can correspondingly connect two loads. When the two loads do not need to work simultaneously, the switching valve group can output hydraulic oil to one of the loads that needs to work, so that one control valve block can achieve the control of two loads, reducing the number of control valve blocks in the load control valve group, with higher working efficiency and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of another perspective of an embodiment of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the mounting rack and mounting plate of an embodiment of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the load control valve group of an embodiment of the present utility model;

[0020] Figure 5 is a schematic structural diagram of the switching valve group of an embodiment of the present utility model;

[0021] Figure 6 is a schematic structural diagram of another perspective of the switching valve group of an embodiment of the present utility model;

[0022] Figure 7 is the schematic oil circuit diagram of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the drawings and specific embodiments. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0024] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0025] For the description of the present utility model, the non-limiting use of Figure 1The marks "front", "rear", "upper", "lower", "left", and "right" shown in the figure are used to facilitate the understanding of this embodiment and are not intended to limit the present utility model. Among them, the front-rear direction represents the longitudinal direction, the left-right direction represents the transverse direction, and the up-down direction represents the vertical direction.

[0026] Figures 1 - 7 An embodiment of the hydraulic drive workbench of the present utility model is shown, including a mounting frame 1, a mounting plate 2, a driving device 3, a hydraulic pump 4, an oil tank 5, a controller 6, a load control valve group 7, and at least one switching valve group 8. The mounting plate 2 is arranged in the middle of the mounting frame 1. The driving device 3 and the hydraulic pump 4 are arranged on the mounting frame 1 and are located on the lower side of the mounting plate 2. The driving device 3 can be a gasoline engine or a diesel engine. The driving device 3 is connected to the hydraulic pump 4 and is used to drive the hydraulic pump 4 to operate. The oil tank 5, the controller 6, the load control valve group 7, and the switching valve group 8 are arranged on the mounting plate 2. The hydraulic pump 4 is respectively connected to the oil tank 5 and the load control valve group 7 through oil circuits. The hydraulic pump 4 is used to output the hydraulic oil in the oil tank 5 to the load control valve group 7. The control valve block 72 of the load control valve group 7 is connected to the switching valve group 8 through an oil circuit. One control valve block 72 corresponds to one switching valve group 8. The load control valve group 7 is used to output the hydraulic oil to the switching valve group 8. The switching valve group 8 is used to connect two loads through an oil circuit and selectively output the hydraulic oil to any one of the loads. The controller 6 is respectively electrically connected to the load control valve group 7 and the switching valve group 8. The controller 6 is used to electrically control the load control valve group 7 and the switching valve group 8.

[0027] In the present utility model, by correspondingly connecting the control valve block 72 of the load control valve group 7 with the switching valve group 8, and one switching valve group 8 can also be correspondingly connected to two loads. When the two loads do not need to work simultaneously, the switching valve group 8 can output the hydraulic oil to one of the loads that needs to work, so that one control valve block 72 can realize the control of two loads, reducing the number of control valve blocks 72 in the load control valve group 7, with higher working efficiency and lower cost.

[0028] It should be noted that the number of the control valve blocks 72 and the switching valve groups 8 can be adjusted according to the load requirements. In this embodiment, four control valve blocks 72 and four switching valve groups 8 are adopted. Among them, the two loads connected by each switching valve group 8 can work alternately. The four switching valve groups 8 can be connected to a total of eight loads, that is, four control valve blocks 72 realize the control of eight loads.

[0029] In some embodiments, such as Figure 1 and Figure 2As shown, the controller 6 and the load control valve group 7 are respectively located on the left front and the right front of the mounting plate 2, facilitating direct operation of the controller 6 and the load control valve group 7 by the operator; the fuel tank 5 and the switching valve group 8 are respectively located on the left rear and the right rear of the mounting plate 2, facilitating the control of the controller 6 and the load control valve group 7 as well as the connection between the switching valve group 8 and the load.

[0030] During the circulation of the hydraulic oil in the entire hydraulic system, the oil temperature will continuously rise. Excessive oil temperature will cause adverse consequences such as a decrease in the viscosity of the hydraulic oil, cavitation, and acceleration of oil aging. Therefore, it is necessary to cool the hydraulic oil.

[0031] In some embodiments, as Figure 1 、 Figure 4 and Figure 7 shown, it further includes a radiator 9. The radiator 9 is arranged at the front end of the mounting frame 1 and is located below the mounting plate 2, making full use of the space of the mounting frame 1 and reducing the volume of this hydraulic drive workbench. The radiator 9 is respectively connected to the oil return port 712 of the load control valve group 7 and the oil return port 51 of the fuel tank 5 through oil pipes. The radiator 9 is used to cool the hydraulic oil in the load control valve group 7 and then output it to the fuel tank 5. By cooling the hydraulic oil returning to the fuel tank 5 through the radiator 9, the aging of the hydraulic oil is slowed down, making the operation of this hydraulic drive workbench more stable.

[0032] In some embodiments, as Figure 1 and Figure 2 shown, the radiator 9 is an air-cooled radiator 9. Using an air-cooled radiator 9 does not require access to cooling water. Just turn on the fan of the air-cooled radiator 9, which is convenient for installation and has a simpler structure.

[0033] In some embodiments, in combination with Figure 1 、 Figure 4 and Figure 7 shown, the load control valve group 7 includes an oil distribution valve block 71, a control valve block 72, and an electromagnetic control valve 73. The oil inlet 711 of the oil distribution valve block 71 is connected to the oil outlet 41 of the hydraulic pump 4, the oil return port 712 of the oil distribution valve block 71 is connected to the oil return port 51 of the fuel tank 5, the oil distribution valve block 71 is communicated with the control valve block 72, the oil distribution valve block 71 is used to distribute the hydraulic oil output from the hydraulic pump 4 to each control valve block 72, the electromagnetic control valve 73 is correspondingly connected to the control valve block 72, the electromagnetic control valve 73 is also electrically connected to the controller 6, the electromagnetic control valve 73 is used to adjust the oil pressure inside the control valve block 72, and the control valve block 72 is connected to the switching valve group 8 through an oil circuit.

[0034] After the hydraulic pump 4 extracts the hydraulic oil in the oil tank 5, it is first output to the oil distribution valve block 71. The oil distribution valve block 71 is connected to the control valve block 72. The oil distribution valve block 71 then distributes the hydraulic oil to each control valve block 72. The electromagnetic regulating valve 73 is connected to the control valve block 72. The electromagnetic regulating valve 73 can be directly controlled by the controller 6. The larger the opening of the valve core of the electromagnetic regulating valve 73, the greater the flow rate of the hydraulic oil in the corresponding control valve block 72, and the greater the corresponding oil pressure. And the control valve block 72 is connected to the load through the switching valve group 8. Therefore, the oil pressure in the control valve block 72 is the working oil pressure of the load. Therefore, by adjusting the oil pressure of the corresponding control valve block 72, the control of the load can be achieved.

[0035] In some embodiments, such as Figure 4 shown, the load control valve group 7 further includes an adjusting handle 74. The adjusting handle 74 is connected to the electromagnetic regulating valve 73. The adjusting handle 74 is used to manually control the electromagnetic regulating valve 73. The adjusting handle 74 can be operated by the staff in some emergency situations or when the electric control fails to manually control the electromagnetic regulating valve 73.

[0036] In some embodiments, the oil distribution valve block 71 includes a pressure control oil port 713. The pressure control oil port 713 is located at the front end of the oil distribution valve block 71. The pressure control oil port 713 is connected to a relief valve 75. The relief valve 75 is also connected to the oil circuit of the oil tank 5. The relief valve 75 is also electrically connected to the controller 6. The maximum oil pressure of the oil distribution valve block 71 can be set in the controller 6. When the actual oil pressure in the oil distribution valve block 71 exceeds the maximum oil pressure, the controller 6 controls the relief valve 75 to act. The relief valve 75 opens and discharges the excess hydraulic oil in the oil distribution valve block 71 to the oil tank 5, so that the oil pressure in the oil distribution valve block 71 remains stable and the entire hydraulic system is safer.

[0037] In some embodiments, in combination with Figure 1 , Figure 5 and Figure 6 shown, the switching valve group 8 includes a switching valve block 81 and an electromagnetic switching valve 82. The electromagnetic switching valve 82 is connected to the switching valve block 81. The switching valve block 81 is respectively connected to the load control valve group 7 and two loads. The electromagnetic switching valve 82 is connected to the controller 6. The electromagnetic switching valve 82 is used to change the flow direction of the hydraulic oil inside the switching valve block 81. The structure of the switching valve group 8 is simple and the cost is lower. When it is necessary to change the flow direction of the hydraulic oil inside the valve block, directly send a control signal from the controller 6 to the electromagnetic switching valve 82, which is more convenient.

[0038] In some embodiments, such as Figure 5 and Figure 6As shown, the switching valve block 81 includes a switching oil inlet 811, a switching oil return port 812, a first output oil port 813, a first oil return port 814, a second output oil port 815, and a second oil return port 816. The switching oil inlet 811 and the switching oil return port 812 are both connected to the load control valve group 7. Among them, the switching oil inlet 811 is connected to the oil outlet 721 of the control valve block 72, and the switching oil return port 812 is connected to the oil inlet 722 of the control valve block 72. The oil circuit interconnection between the switching valve block 81 and the load control valve group 7 is realized through the switching oil inlet 811 and the switching oil return port 812. The first output oil port 813 and the first oil return port 814 are used to connect to a load, and the second output oil port 815 and the second oil return port 816 are used to connect to another load. When the load connected to the first output oil port 813 and the first oil return port 814 needs to act, the electromagnetic switching valve 82 controls the first output oil port 813 and the first oil return port 814 to open. At this time, the second output oil port 815 and the second oil return port 816 are closed, and the hydraulic oil only flows through the first output oil port 813 and the first oil return port 814, and the working oil pressure of the load is controlled through the control valve block 72. When the load connected to the second output oil port 815 and the second oil return port 816 needs to act, the electromagnetic switching valve 82 controls the second output oil port 815 and the second oil return port 816 to open. At this time, the first output oil port 813 and the first oil return port 814 are closed, and the hydraulic oil only flows through the second output oil port 815 and the second oil return port 816, and the working oil pressure of the load is controlled through the control valve block 72.

[0039] The hydraulic oil returns to the fuel tank 5 after circulating in each hydraulic device. During the circulation process, impurities may be mixed into the hydraulic oil. The impurities enter the fuel tank 5 together with the hydraulic oil, shortening the service life of the hydraulic oil and affecting the stability of the hydraulic drive workbench during operation.

[0040] In some embodiments, as Figure 1 、 Figure 2 and Figure 7 shown, an oil return filter 10 is further provided on the fuel tank 5. The oil return filter 10 is used to filter the hydraulic oil returning to the fuel tank 5. The hydraulic oil returning to the fuel tank 5 first passes through the filtration of the oil return filter 10 and then enters the fuel tank 5, so as to extend the service life of the hydraulic oil and improve the stability of the hydraulic drive workbench during operation.

[0041] As can be seen, the utility model discloses a hydraulic-driven workbench, which comprises a mounting frame, a mounting plate, a driving device, a hydraulic pump, an oil tank, a controller, a load control valve group and at least one switching valve group. The driving device is connected to the hydraulic pump. The hydraulic pump is respectively connected to the oil tank and the load control valve group through an oil circuit. The control valve block of the load control valve group is connected to the switching valve group through an oil circuit. The controller is respectively electrically connected to the load control valve group and the switching valve group. The controller is used for electrically controlling the load control valve group and the switching valve group. By correspondingly connecting the control valve block of the load control valve group to the switching valve group, one switching valve group can correspondingly connect two loads. When the two loads do not need to work simultaneously, the switching valve group can output hydraulic oil to one of the loads that needs to work, so that one control valve block can control two loads, reducing the number of control valve blocks in the load control valve group, with higher working efficiency and lower cost.

[0042] The above are only embodiments of the utility model, and do not limit the patent scope of the utility model accordingly. Any equivalent structural transformation made by using the specification and drawings of the utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the utility model.

Claims

1. A hydraulic-driven workbench, characterized in that, It includes a mounting rack, a mounting plate, a driving device, a hydraulic pump, an oil tank, a controller, a load control valve group and at least one switching valve group. The mounting plate is arranged in the middle of the mounting rack. The driving device and the hydraulic pump are arranged on the mounting rack and located on the lower side of the mounting plate. The driving device is connected to the hydraulic pump and is used to drive the hydraulic pump to act. The oil tank, the controller, the load control valve group and the switching valve group are arranged on the mounting plate. The hydraulic pump is respectively connected to the oil tank and the load control valve group through oil circuits. The hydraulic pump is used to output the hydraulic oil in the oil tank to the load control valve group. The control valve block of the load control valve group is connected to the switching valve group through an oil circuit. The load control valve group is used to output the hydraulic oil to the switching valve group. The switching valve group is used to connect two loads through an oil circuit and selectively output the hydraulic oil to any one of the loads. The controller is respectively electrically connected to the load control valve group and the switching valve group, and the controller is used to electrically control the load control valve group and the switching valve group.

2. The hydraulic drive workbench according to claim 1, characterized in that, It further includes a radiator. The radiator is arranged at the front end of the mounting rack and is located on the lower side of the mounting plate. The radiator is respectively connected to the oil return ports of the load control valve group and the oil tank through oil circuits. The radiator is used to cool the hydraulic oil in the load control valve group and then output it to the oil tank.

3. The hydraulic drive workbench according to claim 1, wherein The load control valve group further includes an oil distribution valve block and an electromagnetic regulating valve. The oil inlet of the oil distribution valve block is connected to the oil outlet of the hydraulic pump. The oil return port of the oil distribution valve block is connected to the oil return port of the oil tank. The oil distribution valve block is communicated with the control valve block. The oil distribution valve block is used to distribute the hydraulic oil output from the hydraulic pump to each control valve block. The electromagnetic regulating valve is correspondingly connected to the control valve block. The electromagnetic regulating valve is also electrically connected to the controller. The electromagnetic regulating valve is used to regulate the oil pressure inside the control valve block. The control valve block is connected to the switching valve group through an oil circuit.

4. The hydraulic drive workbench according to claim 3, wherein, The load control valve group further includes an adjusting handle. The adjusting handle is connected to the electromagnetic regulating valve and is used to manually control the electromagnetic regulating valve.

5. The hydraulic-driven workbench according to claim 3, characterized in that, The oil distribution valve block includes a pressure control oil port. The pressure control oil port is located at the front end of the oil distribution valve block. The pressure control oil port is connected to an overflow valve. The overflow valve is connected to the oil tank through an oil circuit. The overflow valve is also electrically connected to the controller.

6. The hydraulic drive workbench according to claim 1, characterized in that The switching valve group includes a switching valve block and an electromagnetic switching valve. The electromagnetic switching valve is connected to the switching valve block. The switching valve block is respectively connected to the load control valve group and two loads. The electromagnetic switching valve is connected to the controller. The electromagnetic switching valve is used to change the flow direction of the hydraulic oil inside the switching valve block.

7. The hydraulic drive workbench according to claim 6, wherein The switching valve block includes a switching oil inlet, a switching oil return port, a first oil outlet, a first oil return port, a second oil outlet and a second oil return port. The switching oil inlet and the switching oil return port are both connected to the load control valve group. The first oil outlet and the first oil return port are used to connect one of the loads, and the second oil outlet and the second oil return port are used to connect the other load.

8. The hydraulic drive workbench according to claim 1, wherein The controller and the load control valve group are respectively located on the left front side and the right front side of the mounting plate, and the fuel tank and the switching valve group are respectively located on the left rear side and the right rear side of the mounting plate.

9. The hydraulic drive workbench according to claim 1, characterized in that A return oil filter is further provided on the fuel tank, and the return oil filter is used to filter the hydraulic oil returning to the fuel tank.

10. The hydraulic drive workbench according to claim 2, characterized in that, The radiator is an air-cooled radiator.

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