Leakage test detection device for hydraulic system of high-precision machine tool

Abstract

The utility model relates to the technical field of hydraulic detection devices, and discloses a high-precision machine tool hydraulic system leakage test detection device which comprises an oil tank, the bottom of the oil tank is fixedly connected with a fixing rod, the bottom of the fixing rod is provided with a lifting assembly, the side face of the lifting assembly is provided with a transmission rod, and the end portion of the transmission rod is provided with a buckle assembly. The lifting assembly comprises a connecting rod, the connecting rod is rotationally connected to the outer side of the fixing rod, the other end of the connecting rod is rotationally connected with a structural frame, the transmission rod is rotationally connected to the side face of the structural frame, and wheels are fixedly connected to the bottom of the structural frame. According to the utility model, when the machine tool is detected, the rotating frame is pulled to be lifted, the clamping block is separated from the stop block, the rotating frame retracts, the wheels are retracted, and the hydraulic pump station is supported by the four supporting frames, so that the stability during leakage detection is ensured, and the accuracy of leakage detection is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic testing device technology, and in particular to a high-precision machine tool hydraulic system leak testing device. Background Technology

[0002] Leak testing of high-precision machine tool hydraulic systems includes connections such as oil pipes, joints, and oil tanks. Hydraulic pump stations are typically used to regulate the pressure, control the flow, and monitor multiple parameters of the closed hydraulic system to achieve leak testing.

[0003] Hydraulic pump stations must strictly follow testing procedures and be equipped with safety protection measures. The testing system is gradually pressurized, and after pressure holding, the welds and joints are inspected for leaks. By adjusting the oil pump displacement in combination with components such as relief valves and proportional valves, pressure and flow can be changed, which has high precision and high reliability.

[0004] Hydraulic pump stations are typically moved by wheels, but due to work and maintenance, there are often leaks and small impurities inside the hydraulic pump station and on the machine tool floor. This makes it impossible for the wheels to ensure that the hydraulic pump station can stably perform leak testing on oily and slippery surfaces, resulting in inaccurate data from pressure gauges and other instruments. Therefore, a high-precision machine tool hydraulic system leak testing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-precision machine tool hydraulic system leak detection device, which aims to improve the problem in the prior art where the hydraulic pump station wheel cannot guarantee stable leak testing on oily and slippery surfaces, resulting in inaccurate detection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-precision machine tool hydraulic system leak detection device includes an oil tank, a fixed rod fixedly connected to the bottom of the oil tank, a lifting assembly installed at the bottom of the fixed rod, a transmission rod installed on the side of the lifting assembly, and a buckling assembly installed at the end of the transmission rod.

[0008] The lifting assembly includes a connecting rod, which is rotatably connected to the outside of the fixed rod. The other end of the connecting rod is rotatably connected to a structural frame. The transmission rod is rotatably connected to the side of the structural frame. Wheels are fixedly connected to the bottom of the structural frame.

[0009] As a further description of the above technical solution:

[0010] The buckle assembly includes a rotating frame, which is rotatably connected to the top of the transmission rod, and a locking block is fixedly connected to the bottom of the rotating frame.

[0011] As a further description of the above technical solution:

[0012] A support rod is fixedly connected to the end of the fixed rod, and a baffle is fixedly connected to the side of the support rod.

[0013] As a further description of the above technical solution:

[0014] A motor is fixedly connected to the outside of the oil tank, and a fan blade is fixedly connected to the output end of the motor.

[0015] As a further description of the above technical solution:

[0016] The top of the oil tank is equipped with a cover plate, and an oil pump is fixedly connected to the top of the cover plate. The oil pump's oil inlet is equipped with a pressure gauge and a control valve assembly. A return oil filter is installed inside the oil tank.

[0017] As a further description of the above technical solution:

[0018] The bottom inner wall of the oil tank is equipped with heating wires.

[0019] As a further description of the above technical solution:

[0020] The top of the oil tank is equipped with a water inlet pipe, and water grooves are opened on the inner walls of both sides of the oil tank. The end of the water inlet pipe is installed on one side of the water groove, and the other side of the water groove is equipped with a water outlet pipe.

[0021] As a further description of the above technical solution:

[0022] An oil suction filter is installed inside the oil tank, and the oil suction filter is installed at the oil inlet of the oil pump.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by pulling the rotating frame, the transmission rod is driven to rotate, causing the structural frame to move under the push of the transmission rod, thus raising the fixed rod and extending the wheels at the bottom of the structural frame. At the same time, the locking block at the bottom of the rotating frame is locked on the outside of the stop block to prevent the rotating frame from retracting, completing the movement of the hydraulic pump station. When the machine tool is being tested, the rotating frame is pulled up to separate the locking block from the stop block, and the rotating frame retracts, causing the wheels to retract. The hydraulic pump station is supported by four support rods to ensure stability during leak testing and to ensure the accuracy of the leak test.

[0025] 2. In this utility model, the starting motor drives the internal fan blades to rotate, which agitates the internal oil. The heating wire installed at the bottom and the water tanks on both sides control the temperature of the internal oil. Combined with the agitation of the fan blades, the temperature can be quickly controlled, reducing the impact of temperature on the detection. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the high-precision machine tool hydraulic system leak detection device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the bottom structure of the high-precision machine tool hydraulic system leak detection device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the locking block of the high-precision machine tool hydraulic system leak detection device proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the telescopic wheel of the high-precision machine tool hydraulic system leak detection device proposed in this utility model;

[0030] Figure 5 This is a cross-sectional structural diagram of the oil tank of the high-precision machine tool hydraulic system leak detection device proposed in this utility model;

[0031] Figure 6 This is a cross-sectional structural diagram of the cooling water tank of the high-precision machine tool hydraulic system leak detection device proposed in this utility model.

[0032] Legend:

[0033] 1. Oil tank; 2. Cover plate; 3. Fixing rod; 4. Connecting rod; 5. Transmission rod; 6. Structural frame; 7. Wheel; 8. Rotating frame; 9. Clamping block; 10. Baffle; 11. Support rod; 12. Motor; 13. Fan blade; 14. Heating wire; 15. Water inlet pipe; 16. Water tank; 17. Water outlet pipe; 18. Oil pump; 19. Pressure gauge; 20. Control valve assembly; 21. Return oil filter; 22. Suction oil filter. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-4This utility model provides an embodiment of a high-precision machine tool hydraulic system leak detection device, including an oil tank 1 and a hydraulic pump station including pressure control valves, directional control valves, accumulators, and other equipment components. These are existing technologies and not improvements to this application, so they will not be described in detail here. A fixed rod 3 is fixedly connected to the bottom of the oil tank 1, supporting the top of the oil tank 1. A lifting assembly is installed at the bottom of the fixed rod 3, causing the fixed rod 3 to rise and fall. A transmission rod 5 is installed on the side of the lifting assembly, driving the lifting assembly to rise and fall through the rotation of the transmission rod 5. A buckle assembly is installed at the end of the transmission rod 5. The lifting assembly includes a connecting rod 4, which is rotatably connected to the outside of the fixed rod 3. The other end of the connecting rod 4 is rotatably connected to a structural frame 6. When the structural frame 6 moves, it drives the connecting rod 4 to rotate, lifting the fixed rod 3 connected to the other end. The transmission rod 5 is rotatably connected to the side of the structural frame 6, and rotating the transmission rod 5 pushes the structural frame 6 to move. Wheels 7 are fixedly connected to the bottom of the structural frame 6, causing the hydraulic pump station to move and improve its position. For efficient operation, a support rod 11 is fixedly connected to the end of the fixed rod 3. Rotating the transmission rod 5 pushes the structural frame 6 to move, causing the connecting rod 4 to rotate. The rotating connecting rod 4 lifts the fixed rod 3 connected to the other end, raising the support rod 11 off the ground. It is supported by the wheels 7 at the bottom of the structural frame 6. A baffle 10 is fixedly connected to the side of the support rod 11. The buckling assembly includes a rotating frame 8, which is rotatably connected to the top of the transmission rod 5. Pulling the rotating frame 8 drives the transmission rod 5 to rotate, and the rotating transmission rod 5 pushes the structural frame 6 to move, thereby supporting the movement of the wheels 7. A locking block 9 is fixedly connected to the bottom of the rotating frame 8, locking the bottom locking block 9 of the pulled rotating frame 8 against the outside of the baffle 10 to prevent the rotating frame 8 from retracting, causing the wheels 7 to retract during movement.

[0036] Reference Figure 1 , Figure 5 and Figure 6An electric heating wire 14 is installed on the bottom inner wall of the oil tank 1. The electric heating wire 14 heats the oil inside the oil tank 1 to prevent difficulty in oil suction and response delay, which could lead to insufficient pressure for leak testing and affect the final test results. A water inlet pipe 15 is installed on the top of the oil tank 1, and water tanks 16 are opened on the inner walls of both sides of the oil tank 1. The end of the water inlet pipe 15 is installed on one side of the water tank 16, and a water outlet pipe 17 is installed on the other side of the water tank 16. When the oil temperature is too high, cooling water is injected into the water tank 16 through the water inlet pipe 15 to cool the oil and prevent the excessively hot oil from accelerating the aging of the internal seals. A motor 12 is fixedly connected to the outside of the oil tank 1. A fan blade 13 is fixedly connected to the output end of the motor 12. When the motor 12 is started, it drives the fan blade 13 to rotate, agitating the internal oil. This, combined with the heating wire 14 and the water tank 16, heats and cools the oil, achieving rapid temperature control. A cover plate 2 is installed on the top of the oil tank 1, and an oil pump 18 is fixedly connected to the top of the cover plate 2. The oil pump 18 draws oil from the inside of the oil tank 1. An oil suction filter 22 is installed inside the oil tank 1, at the oil inlet of the oil pump 18. The oil in the oil tank 1 enters the oil pump 18 after being filtered by the oil suction filter 22. The oil inlet of pump 18 is equipped with a pressure gauge 19 and a control valve group 20. The pressure gauge 19 ensures the test results of the leak detection hydraulic system. The control valve group 20 includes relief valves, throttle valves, directional valves, etc., which are existing technologies and not improvements of this application, so they will not be described in detail here. The control valve group 20 controls the direction, flow rate, pressure and other variables of the oil to achieve leak detection. The oil tank 1 is equipped with a return oil filter 21. After the test is completed, the returned oil is filtered by the return oil filter 21 and then returned to the oil tank 1 to ensure the cleanliness of the oil and prevent impurities from entering the hydraulic system and damaging the components.

[0037] Working principle: First, pulling the rotating frame 8 drives the transmission rod 5 to rotate. The rotating transmission rod 5 pushes the structural frame 6 to move, driving the connecting rod 4 to rotate. The rotating connecting rod 4 lifts the fixed rod 3 connected to the other end. The lifted fixed rod 3 raises the support rod 11 off the ground, supported by the wheels 7 at the bottom of the structural frame 6. The bottom locking block 9 of the pulled rotating frame 8 is locked on the outside of the baffle 10 to prevent the rotating frame 8 from retracting. This causes the wheels 7 to retract during movement, pushing the hydraulic pump station to move near the leak testing machine. Then, pulling the rotating frame 8 to lift it causes the locking block 9 to separate from the baffle 10. The rotating frame 8 retracts, causing the wheels 7 to retract. The hydraulic pump station is supported by the four support rods 11, ensuring stability during leak testing and ensuring the accuracy of the leak test. Depending on the equipment and environment, select the appropriate oil, start the motor 12 to drive the fan blade 13 to rotate, and stir the internal oil. In conjunction with the heating wire 14 and the water tank 16, heat or cool the oil to achieve rapid control of the oil temperature, so as to complete the leak test of the hydraulic system under test under different environmental conditions.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision machine tool hydraulic system leak detection device, comprising an oil tank (1), characterized in that: A fixed rod (3) is fixedly connected to the bottom of the oil tank (1). A lifting assembly is installed at the bottom of the fixed rod (3). A transmission rod (5) is installed on the side of the lifting assembly. A buckle assembly is installed at the end of the transmission rod (5). The lifting assembly includes a connecting rod (4), which is rotatably connected to the outside of the fixed rod (3). The other end of the connecting rod (4) is rotatably connected to a structural frame (6). The transmission rod (5) is rotatably connected to the side of the structural frame (6). The bottom of the structural frame (6) is fixedly connected to a wheel (7).

2. The high-precision machine tool hydraulic system leak detection device according to claim 1, characterized in that: The buckle assembly includes a rotating frame (8), which is rotatably connected to the top of the transmission rod (5), and a locking block (9) is fixedly connected to the bottom of the rotating frame (8).

3. The high-precision machine tool hydraulic system leak detection device according to claim 1, characterized in that: The end of the fixed rod (3) is fixedly connected to a support rod (11), and the side of the support rod (11) is fixedly connected to a baffle (10).

4. The high-precision machine tool hydraulic system leak detection device according to claim 1, characterized in that: A motor (12) is fixedly connected to the outside of the oil tank (1), and a fan blade (13) is fixedly connected to the output end of the motor (12).

5. The high-precision machine tool hydraulic system leak detection device according to claim 4, characterized in that: The top of the oil tank (1) is equipped with a cover plate (2), and an oil pump (18) is fixedly connected to the top of the cover plate (2). The oil pump (18) is equipped with a pressure gauge (19) and a control valve group (20) at its oil inlet. The oil tank (1) is equipped with a return oil filter (21).

6. The high-precision machine tool hydraulic system leak detection device according to claim 5, characterized in that: The bottom inner wall of the oil tank (1) is equipped with a heating wire (14).

7. The high-precision machine tool hydraulic system leak detection device according to claim 6, characterized in that: The top of the oil tank (1) is equipped with a water inlet pipe (15), and water troughs (16) are opened on the inner walls of both sides of the oil tank (1). The end of the water inlet pipe (15) is installed on one side of the water trough (16), and a water outlet pipe (17) is installed on the other side of the water trough (16).

8. The high-precision machine tool hydraulic system leak detection device according to claim 5, characterized in that: An oil suction filter (22) is installed inside the oil tank (1), and the oil suction filter (22) is installed at the oil inlet of the oil pump (18).

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