Jack high and low pressure test equipment

Abstract

The invention discloses a jack high and low pressure testing device, comprising a workbench, a lifting plate is arranged above the workbench, four columns are arranged on the upper surface of the workbench, sliding sleeves are installed at four corners of the lifting plate, the sliding sleeves are slidably mounted on the columns, a positioning block is arranged at the bottom center of the lifting plate, a counterweight is placed on the top of the lifting plate, a top plate is arranged on the top of the column, an adjusting rod is installed on the top plate, a test head is arranged at the bottom of the adjusting rod, and a pressure sensor is installed on the test head; the invention can well simulate low pressure environment and high pressure environment by arranging the lifting plate and the counterweight, and lifting the lifting plate by the jack, so as to test the load of the jack, and automatically complete high and low pressure tests, with high test efficiency and more reliable test results.

Description

Technical Field

[0001] The invention relates to the technical field of jack testing, in particular to the technical field of jack high and low pressure testing equipment. Background Art

[0002] The working principle of the hydraulic jack is to utilize Pascal's principle, that is, the pressure on a confined liquid can be transmitted in all directions without changing its size; in the hydraulic jack, there is a cylinder composed of a small piston and a large piston, and an oil tank that can be injected with hydraulic oil; when the manual or electric oil pump is working, the hydraulic oil in the oil tank will be pressed into the small piston in the cylinder through the pipeline. At this time, the pressure on the small piston will be transmitted to the hydraulic oil, and the hydraulic oil will then evenly transmit this pressure to the large piston of the cylinder. Since the area of ​​the large piston is much larger than that of the small piston, a thrust far greater than the pressure applied by the manual or electric oil pump will be generated on the large piston, thereby lifting the heavy object; in order to ensure the safety of the jack, the jack needs to be subjected to a dynamic load test to determine whether the jack is safe and reliable.

[0003] Patent document CN113074978A discloses a horizontal jack dynamic load test device with a built-in ratchet safety device. The device automatically drives the jack to rise through a test arm to perform a pressure test on the jack. When in use, the device can only test the high-pressure load of the jack, and the test effect is not stable and reliable enough. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a jack high and low voltage testing device that can solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention proposes a jack high and low voltage testing equipment, including a workbench, a control box is provided on the side of the workbench, an electronic touch screen is provided on the surface of the control box, a test button is provided below the electronic touch screen, a base is provided at the bottom of the workbench, a swing arm device is installed on the side of the workbench, a lifting plate is provided above the workbench, four columns are provided on the upper surface of the workbench, sliding sleeves are installed at the four corners of the lifting plate, the sliding sleeves are slidably mounted on the columns, a positioning block is provided at the bottom center of the lifting plate, a counterweight block is placed on the top of the lifting plate, a top plate is provided on the top of the column, an adjusting rod is installed on the top plate, a test head is provided at the bottom of the adjusting rod, a pressure sensor is installed on the test head, and the pressure sensor is connected to the control box.

[0006] Preferably, the swing arm device includes a mounting frame, on which a swing arm is rotatably mounted, the swing arm is driven to swing by a driving device, the driving device is connected to the control box, the swing arm is connected to a connecting rod, a mounting head is provided at the end of the connecting rod, an opening groove is provided on the mounting head, a slot is provided on the side of the opening groove away from the connecting rod, a limit pin is detachably mounted on the slot, and the pin is arranged to penetrate the opening of the opening groove.

[0007] Preferably, a displacement sensor is installed on the lifting plate, and the displacement sensor is connected to the control box.

[0008] Preferably, a spring is sleeved on the bottom of the column.

[0009] Preferably, the adjusting rod is an adjusting threaded column, an adjusting sleeve is rotatably mounted on the top plate, the adjusting threaded column is threadably mounted in the adjusting sleeve, and the test head is fixed at the bottom of the adjusting threaded column.

[0010] The beneficial effects of the present invention are as follows: the present invention sets a lifting plate and a counterweight block, and lifts the lifting plate by a jack, so as to simulate a low-pressure environment well and test the low-pressure load of the jack; after the lifting plate is raised to a certain height, the lifting speed of the jack is reduced, so that the jack is in contact with the test head, and a high-pressure environment is simulated, and the high-pressure load of the jack is tested; the high and low pressure tests can be completed automatically, the test efficiency is high, and the test results are more reliable.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of a lifting plate of the present invention.

[0013] In the figure: 1. workbench; 2. control box; 3. swing arm device; 4. lifting plate; 5. counterweight; 6. top plate; 7. test head; 21. electronic touch screen; 22. test button; 11. base; 12. column; 31. mounting frame; 32. swing arm; 33. connecting rod; 34. mounting head; 35. opening slot; 41. sliding sleeve; 42. positioning block; 61. adjusting rod; 62. adjusting sleeve. DETAILED DESCRIPTION

[0014] See also Figure 1 , Figure 2, a jack high and low voltage test equipment comprises a workbench 1, a control box 2 is arranged on the side of the workbench 1, an electronic touch screen 21 is arranged on the surface of the control box 2, a test button 22 is arranged below the electronic touch screen 21, a base 11 is arranged at the bottom of the workbench 1, a swing arm device 3 is installed on the side of the workbench 1, a lifting plate 4 is arranged above the workbench 1, four columns 12 are arranged on the upper surface of the workbench 1, sliding sleeves 41 are installed at the four corners of the lifting plate 4, the sliding sleeves 41 are slidably mounted on the columns 12, a positioning block 42 is arranged at the bottom center of the lifting plate 4, a counterweight 5 is placed on the top of the lifting plate 4, a top plate 6 is arranged on the top of the column 12, an adjusting rod 61 is installed on the top plate 6, a test head 7 is arranged at the bottom of the adjusting rod 61, a pressure sensor is installed on the test head 7, and the pressure sensor is connected to the control box 2 The swing arm device 3 includes a mounting frame 31, on which a swing arm 32 is rotatably mounted, and the swing arm 32 is driven to swing by a driving device, and the driving device is connected to the control box 2. A connecting rod 33 is connected to the swing arm 32, and a mounting head 34 is provided at the end of the connecting rod 33. An opening groove 35 is provided on the mounting head 34, and a slot is provided on the side of the opening groove 35 away from the connecting rod 33. A limit pin is detachably mounted on the slot, and the pin is arranged through the opening of the opening groove 35; a displacement sensor is mounted on the lifting plate 4, and the displacement sensor is connected to the control box 2; a spring is provided at the bottom sleeve of the column 12; the adjusting rod 61 is an adjusting threaded column, and an adjusting sleeve 62 is rotatably mounted on the top plate 6, and the adjusting threaded column is threadedly mounted in the adjusting sleeve 62, and the test head 7 is fixed at the bottom of the adjusting threaded column.

[0015] Working process of the present invention: Input the test parameters through the electronic touch screen, and place the jack on the workbench 1, align the lifting head of the jack with the positioning block 42 at the bottom of the lifting plate 4, install the driving handle of the jack into the opening slot 35, and insert the limit latch. The control box 2 starts to work according to the set parameters. The control box 2 first controls the swing arm 32 to swing at a frequency of 40 Hz, drives the lifting head to lift the lifting plate 4, and performs a low-voltage section test. After the lifting plate 4 rises to the set first height, the control box 2 controls the swing arm 32 to decelerate and swing at a frequency of 35 Hz to drive the lifting plate 4 to continue to rise. After the lifting plate 4 rises to the second height, the control phase controls the swing arm 3 2 decelerates again and swings at a frequency of 15 Hz. The third swing speed is less than the second swing speed, so that the top of the lifting plate 4 contacts the test head 7, and a high-pressure section test is performed. The test head 7 detects the pressure. After the measured pressure reaches the set standard pressure value, it temporarily swings and maintains for a certain period of time to perform a pressure holding test. After the pressure holding is completed, the control box 2 controls the swing arm 32 to continue to swing at a frequency of 17 Hz. The pressure detected by the test head 7 continues to increase. When the pressure reaches the starting pressure of the safety valve, the swing arm 32 stops working, the jack safety valve is turned on, the pressure detected by the test head 7 decreases, the control box 2 controls the indicator light to light up, and the test passes.

[0016] The device can simulate the pressure environment under different loads and complete the pressure test of the jack at one time, with high test efficiency and safe and reliable test results.

[0017] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A jack high and low voltage test equipment, characterized in that: The invention comprises a workbench (1), a control box (2) is provided on the side of the workbench (1), an electronic touch screen (21) is provided on the surface of the control box (2), a test button (22) is provided below the electronic touch screen (21), a base (11) is provided at the bottom of the workbench (1), a swing arm device (3) is installed on the side of the workbench (1), a lifting plate (4) is provided above the workbench (1), four columns (12) are provided on the upper surface of the workbench (1), and the four corners of the lifting plate (4) are provided with a plurality of support columns (12). A sliding sleeve (41) is installed, and the sliding sleeve (41) is slidably mounted on the column (12). A positioning block (42) is provided at the center of the bottom of the lifting plate (4). A counterweight block (5) is placed on the top of the lifting plate (4). A top plate (6) is provided on the top of the column (12). An adjusting rod (61) is installed on the top plate (6). A test head (7) is provided at the bottom of the adjusting rod (61). A pressure sensor is installed on the test head (7). The pressure sensor is connected to the control box (2).

2. The jack high and low voltage testing equipment according to claim 1, characterized in that: The swing arm device (3) comprises a mounting frame (31), a swing arm (32) being rotatably mounted on the mounting frame (31), the swing arm (32) being driven to swing by a driving device, the driving device being connected to the control box (2), the swing arm (32) being connected to a connecting rod (33), a mounting head (34) being provided at the end of the connecting rod (33), an opening groove (35) being provided on the mounting head (34), a slot being provided on a side of the opening groove (35) away from the connecting rod (33), a limit pin being detachably mounted on the slot, the pin being provided through the opening of the opening groove (35).

3. The jack high and low voltage testing equipment according to claim 1, characterized in that: A displacement sensor is installed on the lifting plate (4), and the displacement sensor is connected to the control box (2).

4. The jack high and low voltage testing equipment according to claim 1, characterized in that: The bottom of the upright column (12) is sleeved with a spring.

5. The jack high and low voltage testing equipment according to claim 1, characterized in that: The adjusting rod (61) is an adjusting threaded column, an adjusting sleeve (62) is rotatably mounted on the top plate (6), the adjusting threaded column is threadably mounted in the adjusting sleeve (62), and the test head (7) is fixed to the bottom of the adjusting threaded column.

6. The jack high and low voltage testing equipment according to claim 1, characterized in that: During the test, the jack is placed on the workbench (1), the lifting head of the jack is aligned with the positioning block (42) at the bottom of the lifting plate (4), the driving handle of the jack is installed in the opening slot (35), and the limit latch is inserted. The control box (2) works according to the set parameters. The control box (2) first controls the swing arm (32) to swing rapidly at a first swing speed, drives the lifting head to lift the lifting plate (4), and after the lifting plate (4) rises to a set first height, the control box (2) controls the swing arm (32) to decelerate and swing at a second swing speed, which is lower than the first swing speed, to drive the lifting plate (4) to continue to rise, and the lifting plate (4) rises to a second height. After that, the control phase controls the swing arm (32) to slow down again and swing at a third swing speed, which is lower than the second swing speed, so that the top of the lifting plate (4) contacts the test head (7). The test head (7) detects the pressure. After the measured pressure reaches the set standard pressure value, the swing is temporarily stopped and maintained for a certain period of time to perform a pressure holding test. After the pressure is completed, the control box (2) controls the swing arm (32) to continue to swing, and the pressure detected by the test head (7) continues to increase. When the pressure reaches the starting pressure of the safety valve, the swing arm (32) stops working, the jack safety valve is turned on, and the pressure detected by the test head (7) decreases. The control indicator light of the control box (2) lights up, and the test passes.

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