Hydraulic control system for small tester

Abstract

The utility model relates to a hydraulic control system for a small tester, and belongs to the technical field of hydraulic systems, the hydraulic control system comprises a rack, an energy accumulator, an oil return tank and multiple sets of oil way mechanisms are installed on the rack, each oil way mechanism comprises an electromagnetic reversing valve, a bidirectional hydraulic lock and an actuator, the energy accumulator is communicated with the oil inlet end of the electromagnetic reversing valve, and the bidirectional hydraulic lock is communicated with the oil outlet end of the electromagnetic reversing valve; the bidirectional hydraulic lock is communicated between the electromagnetic directional valve and the actuator, and the oil outlet end of the electromagnetic directional valve is communicated with the oil return tank. The device is simple and small in structure, can be suitable for being used under the condition of a small space, directly uses the energy accumulator as a power source, and solves the problems that a power motor does not exist, and a large-capacity power source is not used.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic systems, and in particular to a hydraulic control system for a small tester. Background Art

[0002] Currently, hydraulic systems function to increase force by varying pressure. A complete hydraulic system consists of five components: power elements, actuators, control elements, auxiliary elements (accessories), and hydraulic fluid. Hydraulic systems can be divided into two categories: hydraulic transmission systems and hydraulic control systems. Hydraulic transmission systems primarily transmit power and motion. Hydraulic control systems ensure that the hydraulic system output meets specific performance requirements (especially dynamic performance). The term "hydraulic system" generally refers primarily to hydraulic transmission systems.

[0003] The existing hydraulic control system integrates many electrical systems, including power motors, resulting in a large overall size. It cannot be used in some conditions where there is no large-capacity power supply or the space is small. Therefore, there is an urgent need to develop a hydraulic control system that does not require an integrated electrical system. Utility Model Content

[0004] The purpose of this application is to provide a hydraulic control system for a small tester to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides a hydraulic control system for a small tester adopting the following technical solutions:

[0006] A hydraulic control system for a small tester includes a frame on which an accumulator, an oil return tank and multiple oil circuit mechanisms are installed. The oil circuit mechanisms include an electromagnetic reversing valve, a two-way hydraulic lock and an actuator. The accumulator is connected to the oil inlet end of the electromagnetic reversing valve, the two-way hydraulic lock is connected between the electromagnetic reversing valve and the actuator, and the oil outlet end of the electromagnetic reversing valve is connected to the oil return tank.

[0007] The actuator includes a housing, a piston and an output rod. The piston is movably arranged in a cavity inside the housing. Oil inlet and outlet holes are respectively provided on both sides of the housing near the end. The piston is arranged between the oil inlet and outlet holes on both sides. The oil inlet and outlet holes on both sides are connected to the two-way hydraulic lock.

[0008] A one-way valve is installed on the pipeline connecting the oil outlet end of the electromagnetic reversing valve and the oil return tank, and the flow direction of the one-way valve is toward the oil return tank.

[0009] The oil circuit mechanism is also connected with an oil replenishing port.

[0010] A pressure gauge is installed in the pipeline connecting the accumulator and the electromagnetic reversing valve.

[0011] In summary, the present application includes at least one of the following beneficial technical effects: the hydraulic control system for the small tester has a compact structure and can be used in smaller spaces. By directly using the accumulator as a power source, it solves the problem of the absence of a power motor and avoids the use of a large-capacity power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0013] Figure 2 It is a system schematic diagram used to reflect the hydraulic control system in the embodiment of the present application.

[0014] Explanation of the accompanying symbols: 1. Frame; 2. Accumulator; 3. Oil return tank; 4. Solenoid reversing valve; 5. Two-way hydraulic lock; 6. Actuator; 61. Housing; 62. Piston; 63. Output rod; 7. One-way valve; 8. Pressure gauge; 9. Oil filling port. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-2 This application is described in further detail.

[0016] The present application discloses a hydraulic control system for a small tester. Figure 1-2 , comprising a frame 1, on which are mounted an accumulator 2, an oil return tank 3, and multiple sets of oil circuit mechanisms, wherein the oil circuit mechanisms include an electromagnetic reversing valve 4, a two-way hydraulic lock 5, and an actuator 6. The accumulator 2 is connected to the oil inlet end of the electromagnetic reversing valve 4, the two-way hydraulic lock 5 is connected between the electromagnetic reversing valve 4 and the actuator 6, and the oil outlet end of the electromagnetic reversing valve 4 is connected to the oil return tank 3;

[0017] The actuator 6 includes a housing 61, a piston 62 and an output rod 63. The piston 62 is movably arranged in a cavity inside the housing 61. Oil inlet and outlet holes are respectively provided on both sides of the housing 61 near the end. The piston 62 is arranged between the oil inlet and outlet holes on both sides. The oil inlet and outlet holes on both sides are connected to the two-way hydraulic lock 5.

[0018] Reference Figure 2 A one-way valve 7 is installed on the pipeline connecting the oil outlet end of the electromagnetic reversing valve 4 and the oil return tank 3 , and the flow direction of the one-way valve 7 is toward the oil return tank 3 .

[0019] Reference Figure 2 The oil circuit mechanism is also connected to an oil replenishing port 9, and a pressure gauge 8 is installed in the pipeline connecting the accumulator 2 and the electromagnetic reversing valve 4.

[0020] The implementation principle of a hydraulic control system for a small tester in the embodiment of the present application is as follows:

[0021] When in use, a certain amount of pressure oil is loaded into the accumulator 2 through an external oil source, the left electromagnet of the electromagnetic reversing valve 4 is energized, and the high-pressure pressure oil of the accumulator 2 enters the actuator 6 through the oil circuit on the left side of the electromagnetic reversing valve 4 and the two-way hydraulic lock 5, and controls the output rod 63 to extend from the rodless cavity in the shell 61. The hydraulic oil in the rod cavity on the right side of the shell 61 flows back to the return oil tank 3 through the two-way hydraulic lock 5 and the electromagnetic reversing valve 4, thereby completing the power output and solving the problem of no power motor and avoiding the use of a large-capacity power supply.

[0022] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydraulic control system for a small tester, characterized by: The invention comprises a frame (1), an accumulator (2), an oil return tank (3) and a plurality of oil circuit mechanisms are installed on the frame (1), the oil circuit mechanism comprises an electromagnetic reversing valve (4), a two-way hydraulic lock (5) and an actuator (6), the accumulator (2) is connected to the oil inlet end of the electromagnetic reversing valve (4), the two-way hydraulic lock (5) is connected between the electromagnetic reversing valve (4) and the actuator (6), and the oil outlet end of the electromagnetic reversing valve (4) is connected to the oil return tank (3).

2. The hydraulic control system for a small tester according to claim 1, characterized in that: The actuator (6) comprises a housing (61), a piston (62) and an output rod (63); the piston (62) is movably arranged in a cavity within the housing (61); oil inlet and outlet holes are respectively provided on both sides of the housing (61) near the end; the piston (62) is arranged between the oil inlet and outlet holes on both sides; and the oil inlet and outlet holes on both sides are connected to the bidirectional hydraulic lock (5).

3. The hydraulic control system for a small tester according to claim 1, characterized in that: A one-way valve (7) is installed on the pipeline connecting the oil outlet end of the electromagnetic reversing valve (4) and the oil return tank (3), and the flow direction of the one-way valve (7) is toward the oil return tank (3).

4. The hydraulic control system for a small tester according to claim 1, characterized in that: The oil circuit mechanism is also connected to an oil replenishing port (9).

5. The hydraulic control system for a small tester according to claim 1, characterized in that: A pressure gauge (8) is installed in the pipeline connecting the accumulator (2) and the electromagnetic reversing valve (4).

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