Modular emergency power device

Abstract

The utility model discloses a modularized emergency power device which comprises a sandwich valve group, the sandwich valve group is connected with an existing control valve group in a hydraulic loop, and the sandwich valve group comprises a sandwich block, a throttle valve, a first one-way valve and a hydraulic control one-way valve, and the throttle valve, the first one-way valve and the hydraulic control one-way valve are integrated in the sandwich block; the power unit comprises an energy accumulator, an electromagnetic valve and a logic valve, the electromagnetic valve is connected with the logic valve, the logic valve is connected with the sandwich valve group, and the energy accumulator is connected with the logic valve. The emergency power device is modularized and additionally arranged on the original control valve group of the equipment, so that emergency operation can be realized, the change of the existing control valve group is small, a pipeline does not need to be independently connected to an executing mechanism, the improvement cost is low, and the installation and operation are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control, and particularly relates to a modular emergency power device. Background Technique

[0002] In conventional designs, an additional emergency control valve group is generally added to the hydraulic control circuit of an actuator (such as an oil cylinder) to deal with some sudden failure situations. The emergency control valve group needs to be connected to the actuator through a separate pipeline. If the need for emergency operation is considered at the initial design stage, then adding the emergency control valve group during the design is not a problem. However, there are currently many control systems that do not have an emergency control valve group set during the design. If these systems are to be modified, the modification cost is relatively high. Based on this, the present application provides a modular emergency power device that can be directly installed in the original control system with relatively little modification to the original control system. Content of the Utility Model

[0003] In order to solve the technical problems existing in the prior art, the utility model provides a modular emergency power device that can be directly installed in the original control system with relatively little modification to the original control system.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: a modular emergency power device, comprising: a stacking valve group, the stacking valve group is connected to the existing control valve group in the hydraulic circuit, and the stacking valve group includes: a stacking block and a throttle valve, a first check valve and a pilot-operated check valve integrated in the stacking block; a power unit, the power unit includes: an accumulator, a solenoid valve and a logic valve, the solenoid valve is connected to the logic valve, the logic valve is connected to the stacking valve group, and the accumulator is connected to the logic valve.

[0005] Further, the throttle valve is connected to the inlet of the first check valve, the outlet of the first check valve is connected to the rodless cavity of the oil cylinder; the pilot-operated check valve is connected to the rod cavity of the oil cylinder, and the logic valve is connected to the control oil port of the pilot-operated check valve.

[0006] Further, the throttle valve is connected to the inlet of the first check valve, the outlet of the first check valve is connected to the rod cavity of the oil cylinder; the pilot-operated check valve is connected to the rodless cavity of the oil cylinder, and the logic valve is connected to the control oil port of the pilot-operated check valve.

[0007] Further, the power unit further includes: a second check valve, the inlet of the second check valve is connected to the oil inlet P, and the outlet of the second check valve is connected to the accumulator.

[0008] Further, the power unit further includes: a first ball valve and a second ball valve. The first ball valve is used to control the on-off of the oil inlet circuit of the accumulator, and the second ball valve is used to control the on-off of the oil return circuit of the accumulator.

[0009] Further, the power unit further includes: a pressure gauge and a third ball valve. The pressure gauge is used to detect the pressure of the accumulator, and the third ball valve is used to control the on-off of the detection path.

[0010] Further, the power unit further includes: a fourth ball valve. One end of the fourth ball valve is connected to the solenoid valve, and the other end of the fourth ball valve is connected to the logic valve.

[0011] Further, the existing control valve group includes: an electromagnetic directional valve, a one-way speed control valve, and a balance valve integrated in a valve block, and the stacking block is mounted on the valve block.

[0012] The beneficial effect of the present utility model is that the modular emergency power device of the present utility model can be made modular and installed on the original control valve group of the equipment to achieve emergency operation. The modification to the existing control valve group is small, there is no need to separately connect pipelines to the actuator, the transformation cost is low, and the installation and operation are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 is a schematic structural diagram of the emergency power device (oil cylinder extending) of the present utility model.

[0015] Figure 2 is a schematic structural diagram of the emergency power device (oil cylinder retracting) of the present utility model.

[0016] Figure 3 is a schematic structural diagram of the existing control valve group in the present utility model.

[0017] In the figure: 101, electromagnetic directional valve; 102, one-way speed control valve; 103, balance valve; 11, stacking block; 12, throttle valve; 13, first check valve; 14, pilot-operated check valve; 21, accumulator; 22, solenoid valve; 23, logic valve; 24, second check valve; 25, first ball valve; 26, second ball valve; 27, pressure gauge; 28, third ball valve; 29, fourth ball valve; 210, overflow valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] As Figures 1 to 3 shown, the modular emergency power device of the present utility model includes: a stacked valve group and a power unit. The stacked valve group is connected to the existing control valve group in the hydraulic circuit. The stacked valve group includes: a stacked block 11 and a throttle valve 12, a first check valve 13, and a pilot-operated check valve 14 integrated in the stacked block 11; the power unit includes: an accumulator 21, a solenoid valve 22, and a logic valve 23. The solenoid valve 22 is connected to the logic valve 23, the logic valve 23 is connected to the stacked valve group, and the accumulator 21 is connected to the logic valve 23.

[0022] It should be noted that when the present utility model is in use, only the stacked block 11 needs to be installed on the valve block of the existing control valve group, and then the wiring can be carried out according to requirements. The power unit is used to provide power for the stacked valve group. Both the stacked valve group and the power unit are modular units, and can be installed on the original control circuit of the equipment according to requirements to achieve emergency operation, with little modification to the original control circuit, and it is also beneficial to improve the versatility of the emergency power device.

[0023] For example, the existing control valve group in the hydraulic circuit of the device includes: an electromagnetic directional valve 101, a one-way speed control valve 102, and a balance valve 103 integrated in a valve block. The electromagnetic directional valve 101 is connected to the one-way speed control valve 102, and the one-way speed control valve 102 is connected to the balance valve 103. The P port on the valve block is the oil inlet, the T port is the oil return port, the A port is connected to the rod chamber of the oil cylinder, and the B port is connected to the rodless chamber of the oil cylinder. Both the P port and the T port are connected to the fuel tank. By reversing the electromagnetic directional valve 101, the telescopic movement of the piston rod of the oil cylinder is achieved. The one-way speed control valve 102 is used to adjust the telescopic speed of the oil cylinder, and the balance valve 103 can balance the load and keep the oil cylinder in the stopped position when it does not move.

[0024] Specifically, the power unit further includes: a second check valve 24, a first ball valve 25, a second ball valve 26, a pressure gauge 27, a third ball valve 28, a fourth ball valve 29, and a relief valve 210. The inlet of the second check valve 24 is connected to the oil inlet P, the outlet of the second check valve 24 is connected to the accumulator 21, the first ball valve 25 is used to control the on / off of the oil inlet circuit of the accumulator 21, the second ball valve 26 is used to control the on / off of the oil return circuit of the accumulator 21, the pressure gauge 27 is used to detect the pressure of the accumulator 21, the third ball valve 28 is used to control the on / off of the detection path, one end of the fourth ball valve 29 is connected to the solenoid valve 22, the other end of the fourth ball valve 29 is connected to the logic valve 23, and both ends of the relief valve 210 are respectively connected to the oil inlet and the oil outlet, and are used to limit the maximum pressure of the accumulator 21.

[0025] Under normal working conditions, the stacked valve group and the power unit will not affect the existing control valve group. The hydraulic oil enters from the P port, passes through the second check valve 24 and the first ball valve 25, and then enters the accumulator 21. The accumulator 21 is mainly used to store high-pressure oil and serves as a power source to provide power for the control circuit during emergency operations. The first check valve 24 is used to ensure the one-way flow of the hydraulic oil. In case of a fuel tank failure, the high-pressure oil in the accumulator 21 can be used for pressure holding to prevent the oil from flowing back to the P port. When the accumulator 21 fails, the first ball valve 25, the second ball valve 26, and the third ball valve 28 can be closed to facilitate maintenance.

[0026] It should be noted that after the stacked valve group is installed on the existing control valve group, the wiring is carried out according to the emergency operation situation required by the current oil cylinder. For example, when the oil cylinder needs to extend emergently, the throttle valve 12 is connected to the inlet of the first check valve 13, and the outlet of the first check valve 13 is connected to the rodless chamber of the oil cylinder; the hydraulic control check valve 14 is connected to the rod chamber of the oil cylinder, and the logic valve 23 is connected to the control oil port of the hydraulic control check valve 14. When the oil cylinder needs to retract emergently, the throttle valve 12 is connected to the inlet of the first check valve 13, and the outlet of the first check valve 13 is connected to the rod chamber of the oil cylinder; the hydraulic control check valve 14 is connected to the rodless chamber of the oil cylinder, and the logic valve 23 is connected to the control oil port of the hydraulic control check valve 14.

[0027] When the oil cylinder needs to extend emergently, the solenoid valve 22 is energized, and the high-pressure oil in the spring chamber of the logic valve 23 returns to the oil tank, and the logic valve 23 opens. The high-pressure oil in the accumulator 21 enters the rodless chamber of the oil cylinder through the logic valve 23, the throttle valve 12, and the first check valve 13. At the same time, the high-pressure oil of the accumulator 21 causes the pilot-operated check valve 14 to open, and the oil in the rod chamber of the oil cylinder can return to the oil tank through the pilot-operated check valve 14. The throttle valve 12 is used to adjust the opening speed of the oil cylinder. The first check valve 13 is used to achieve the one-way flow of the oil, ensuring that under normal circumstances, the oil in the rodless chamber of the oil cylinder will not enter the accumulator 21 through the PE. When it is necessary to stop during the emergency extension of the oil cylinder, the pilot-operated check valve 14 can keep the oil cylinder in the stopped position. When a sudden power failure occurs, the solenoid valve 22 cannot function, and the fourth ball valve 29 can be manually opened to drain the hydraulic oil in the spring chamber of the logic valve 23 to perform emergency operations.

[0028] When the oil cylinder needs to retract emergently, the solenoid valve 22 is energized, and the high-pressure oil in the spring chamber of the logic valve 23 returns to the oil tank, and the logic valve 23 opens. The high-pressure oil in the accumulator 21 enters the rod chamber of the oil cylinder through the logic valve 23, the throttle valve 12, and the first check valve 13. At the same time, the high-pressure oil of the accumulator 21 causes the pilot-operated check valve 14 to open, and the oil in the rodless chamber of the oil cylinder can return to the oil tank through the pilot-operated check valve 14.

[0029] In summary, for the modular emergency power device of the present invention, the emergency power device is made modular and can be installed on the original control valve group of the equipment to achieve emergency operations. The modification to the existing control valve group is small, there is no need to separately connect pipelines to the actuator, the transformation cost is low, and the installation and operation are convenient.

[0030] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A modular emergency power device, characterized in that: include: A stacked valve group, the stacked valve group is connected to an existing control valve group in a hydraulic circuit, the stacked valve group comprising: a stacked block (11) and a throttle valve (12), a first check valve (13) and a hydraulically controlled check valve (14) integrated in the stacked block (11); A power unit, the power unit comprising: an accumulator (21), a solenoid valve (22) and a logic valve (23), the solenoid valve (22) being connected to the logic valve (23), the logic valve (23) being connected to the stacked valve group, and the accumulator (21) being connected to the logic valve (23).

2. The modular emergency power device according to claim 1, characterized in that: The throttle valve (12) is connected to the inlet of the first one-way valve (13), and the outlet of the first one-way valve (13) is connected to the rodless chamber of the oil cylinder; the hydraulically controlled one-way valve (14) is connected to the rod chamber of the oil cylinder, and the logic valve (23) is connected to the control oil port of the hydraulically controlled one-way valve (14).

3. The modular emergency power device according to claim 1, characterized in that: The throttle valve (12) is connected to the inlet of the first one-way valve (13), and the outlet of the first one-way valve (13) is connected to the rod chamber of the oil cylinder; the hydraulically controlled one-way valve (14) is connected to the rodless chamber of the oil cylinder, and the logic valve (23) is connected to the control oil port of the hydraulically controlled one-way valve (14).

4. The modular emergency power device according to claim 1, characterized in that: The power unit further comprises: a second one-way valve (24), the inlet of the second one-way valve (24) being connected to the oil inlet P, and the outlet of the second one-way valve (24) being connected to the accumulator (21).

5. The modular emergency power device according to claim 1, characterized in that: The power unit further comprises: a first ball valve (25) and a second ball valve (26), wherein the first ball valve (25) is used to control the on-off of an oil inlet circuit of the accumulator (21), and the second ball valve (26) is used to control the on-off of an oil return circuit of the accumulator (21).

6. The modular emergency power device according to claim 1, characterized in that: The power unit further comprises: a pressure gauge (27) and a third ball valve (28), wherein the pressure gauge (27) is used to detect the pressure of the accumulator (21), and the third ball valve (28) is used to control the on-off of the detection path.

7. The modular emergency power device according to claim 1, characterized in that: The power unit further comprises: a fourth ball valve (29), one end of the fourth ball valve (29) is connected to the solenoid valve (22), and the other end of the fourth ball valve (29) is connected to the logic valve (23).

8. The modular emergency power device according to claim 1, characterized in that: The existing control valve group comprises: an electromagnetic reversing valve (101), a one-way speed regulating valve (102) and a balancing valve (103) integrated in a valve block, and the stacking block (11) is mounted on the valve block.

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