Leakage detection equipment for hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinder detection devices, and discloses leakage detection equipment for a hydraulic cylinder, which comprises a supporting plate, a jacket is mounted at the upper end of the supporting plate, a motor is arranged at the lower end of the jacket, a cylinder barrel is clamped in the jacket, a piston rod is mounted on one side of the cylinder barrel, and a piston rod is mounted on the other side of the cylinder barrel. An adjusting plate is installed on the left side of the upper portion of the supporting plate, a threaded rod is installed in the adjusting plate, a detection sleeve is fixedly connected to the upper portion of the adjusting plate, an air pump is installed on the left side of the upper portion of the supporting plate, a first pipeline is installed at one end of the air pump, and an auxiliary pipeline is installed on the side face of the detection sleeve. According to the leakage detection equipment for the hydraulic cylinder, the motor is started, the motor drives the cylinder barrel to rotate, and meanwhile, the two ends of the cylinder barrel can be sequentially sleeved with the detection sleeves, so that whether the two ends of the cylinder barrel are sealed or not can be conveniently detected, and the detection effect of whether the hydraulic cylinder leaks or not is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder detection devices, in particular to leakage detection equipment for hydraulic cylinders. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. When the hydraulic cylinder is produced, the sealing of the hydraulic cylinder needs to be tested to avoid leakage of the hydraulic rod, which may cause damage to the hydraulic cylinder during subsequent use.

[0003] In the leakage detection equipment, a detection sleeve is installed at one end of the hydraulic cylinder where the detection part needs to be detected, and the hydraulic cylinder is started at the same time. When the hydraulic rod leaks, the pressure inside the detection sleeve increases. By detecting whether the pressure inside the detection sleeve increases, the hydraulic cylinder can be detected to see if it is leaking. However, due to the different diameters of hydraulic cylinders, when the detection sleeve is installed on the outside of hydraulic rods of different diameters, there will be a mismatch between the connection between the hydraulic rod and the detection sleeve, which will cause gas to leak from the connection, thereby affecting the accuracy of hydraulic cylinder leakage detection. For this reason, we have proposed a leakage detection equipment. Utility Model Content

[0004] In view of the shortcomings of existing leakage detection equipment for hydraulic cylinders, the utility model provides a leakage detection equipment for hydraulic cylinders, which has the advantages of being sleeved on the outside of the cylinder by a detection sleeve, and at the same time, a conical groove is provided on the inner side of the detection sleeve, so that the detection sleeve can be sleeved on the outside of cylinders of different diameters, and at the same time, the inner side of the cylinder is sealed by a first sealing gasket, and the outside of the cylinder is sealed by a second sealing gasket, thereby providing equipment sealing and then improving the accuracy of leakage detection, thereby solving the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a leakage detection device for a hydraulic cylinder, comprising a support plate, a jacket is installed on the upper end of the support plate, and a motor is arranged at the lower end of the jacket, a cylinder is clamped inside the jacket, a piston rod is installed on one side of the cylinder, an adjustment plate is installed on the left side of the upper part of the support plate, a threaded rod is installed inside the adjustment plate, a detection sleeve is fixedly connected to the upper part of the adjustment plate, an air pump is installed on the left side of the upper part of the support plate, a first pipeline is installed at one end of the air pump, an auxiliary pipeline is installed on the side of the detection sleeve, an inner positioning plate is fixedly connected inside the detection sleeve, a first sealing gasket is installed on the side of the inner positioning plate, a push plate is sleeved on the outside of the cylinder, a second sealing gasket is installed on the inner side of the push plate, a mounting sleeve is fixedly connected to the outside of the detection sleeve, a screw is installed on the side of the push plate, an auxiliary box is installed on the side of the detection sleeve through the second pipeline, an exhaust valve is installed on the upper part of the auxiliary box, a sealing state observation tube is fixedly connected to the side of the exhaust valve, and a gasket is movably sleeved inside the sealing state observation tube.

[0006] Preferably, the jacket is mounted in the middle of the cylinder, and the motor extends to the lower end of the support plate.

[0007] Preferably, one end of the first pipe is movably sleeved on one side of the cylinder barrel, and the first pipe can pass through the interior of the auxiliary pipe, and a sealing sleeve is installed on the outside of the auxiliary pipe.

[0008] Preferably, the first sealing gasket is installed between the cylinder barrel and the inner positioning plate, and a conical groove is provided on the inner side of the detection sleeve.

[0009] Preferably, the interior of the second sealing gasket is filled with nitrogen, and the inner side of the second sealing gasket is movably sleeved between the cylinder barrel and the detection sleeve.

[0010] Preferably, the screw rod passes through the mounting sleeve, and a nut is mounted on the outside of the screw rod.

[0011] Preferably, the second pipeline drives the detection sleeve and the interior of the sealing status observation tube to be interconnected, and a scale groove is provided on the exterior of the sealing status observation tube.

[0012] Compared with the existing leakage detection equipment for hydraulic cylinders, the utility model has the following beneficial effects:

[0013] 1. The leakage detection device for the hydraulic cylinder moves the cylinder barrel to the contact state of the detection sleeve. At the same time, a conical groove is opened on the inner side of the detection sleeve. Then, according to the different sizes of the cylinder barrels, the detection sleeve can be driven to be sleeved on the outside of one end of the cylinder barrel. At the same time, the first sealing gasket is blocked on the inner side of the connection between the cylinder barrel and the detection sleeve. The screw is rotated to drive the second sealing gasket to move inward, and the second sealing gasket can be contracted. The second sealing gasket is blocked on the outside of the connection between the cylinder barrel and the detection sleeve, thereby improving the sealing between the connection between the cylinder barrel and the detection sleeve.

[0014] 2. The leakage detection device for the hydraulic cylinder starts the motor, which drives the cylinder to rotate. At the same time, the two ends of the cylinder can be sequentially sleeved inside the detection sleeve, so that it is convenient to detect whether the two ends of the cylinder are sealed, thereby improving the detection effect of whether the hydraulic cylinder is leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cylinder end detection state structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the detection and observation part of the utility model;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0020] In the figure: 1. support plate; 2. jacket; 3. motor; 4. cylinder; 5. air pump; 6. first pipeline; 7. adjustment plate; 8. threaded rod; 9. detection sleeve; 10. auxiliary pipeline; 11. piston rod; 12. inner positioning plate; 13. first sealing gasket; 14. push plate; 15. second sealing gasket; 16. mounting sleeve; 17. screw; 18. second pipeline; 19. auxiliary box; 20. exhaust valve; 21. sealing status observation tube; 22. gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A leakage detection device for a hydraulic cylinder comprises a support plate 1, a jacket 2 is installed on the upper end of the support plate 1, the jacket 2 clamps the cylinder 4, and a motor 3 is arranged at the lower end of the jacket 2. The inner clamp of the jacket 2 holds the cylinder 4. The motor 3 is started, and the motor 3 drives the jacket 2 to adjust the angle. A piston rod 11 is installed on one side of the cylinder 4. An adjustment plate 7 is installed on the left side of the upper part of the support plate 1, and a threaded rod 8 is installed inside the adjustment plate 7. The threaded rod 8 is rotated, and the threaded rod 8 drives the position of a detection sleeve 9 to be adjusted. A detection sleeve 9 is fixedly connected to the upper part of the adjustment plate 7, and the detection sleeve 9 seals the outer part of the cylinder 4 that needs to be detected. An air pump 5 is installed on the left side of the upper part of the support plate 1, and a first pipe 6 is installed at one end of the air pump 5. An auxiliary pipe 10 is installed on the side of the detection sleeve 9, and the detection sleeve 9 is fixedly connected to the inner part of the detection sleeve 9. An inner positioning plate 12 is provided with a first sealing gasket 13 on the side of the inner positioning plate 12, and the first sealing gasket 13 seals the inner side of the connection between the cylinder barrel 4 and the detection sleeve 9, and a push plate 14 is sleeved on the outside of the cylinder barrel 4, and a second sealing gasket 15 is installed on the inner side of the push plate 14, and the second sealing gasket 15 seals the outside of the connection between the cylinder barrel 4 and the detection sleeve 9 to improve the sealing performance of the equipment, and a mounting sleeve 16 is fixedly connected to the outside of the detection sleeve 9, and a screw 17 is installed on the side of the push plate 14, and an auxiliary box 19 is installed on the side of the detection sleeve 9 through a second pipe 18, and an exhaust valve 20 is installed on the upper part of the auxiliary box 19, and a sealing state observation tube 21 is fixedly connected to the side of the exhaust valve 20, and a gasket 22 is movably sleeved inside the sealing state observation tube 21, and by observing the position of the gasket 22, whether the cylinder barrel 4 is leaking can be detected.

[0023] See also Figure 3 The jacket 2 is installed in the middle of the cylinder 4, and the motor 3 extends to the lower end of the support plate 1. The cylinder 4 is placed on the upper part of the motor 3 and clamped. The jacket 2 can limit the position of the cylinder 4, and start the motor 3. The motor 3 drives the angle of the cylinder 4 to adjust. At the same time, when detecting whether the cylinder 4 is leaking, it is convenient to adjust the detection angle of the cylinder 4.

[0024] See also Figure 1 and Figure 2One end of the first pipe 6 is movably sleeved on one side of the cylinder 4, and the first pipe 6 can pass through the interior of the auxiliary pipe 10. A sealing sleeve is installed on the outside of the auxiliary pipe 10, and is connected to the cylinder 4 through the end of the first pipe 6. The oil inside the cylinder 4 is started by the air pump 5, and the piston rod 11 is driven to extend outward. When the end of the cylinder 4 is detected, the end of the cylinder 4 extends to the inside of the detection sleeve 9. At the same time, the first pipe 6 passes through the auxiliary pipe 10 and is connected to the cylinder 4, and then controls the cylinder 4 to start, thereby improving the convenience of pipe installation and avoiding the problem of interference of the detection sleeve 9 on the equipment installation.

[0025] See also Figure 5 The first sealing gasket 13 is installed between the cylinder 4 and the inner positioning plate 12. The conical groove on the inner side of the detection sleeve 9 is opened. By installing the first sealing gasket 13 between the inner positioning plate 12 and the cylinder 4, when the detection sleeve 9 is controlled to be installed outside the cylinder 4, the first sealing gasket 13 can be driven to block the outside of the cylinder 4. At the same time, the first sealing gasket 13 can seal between the cylinder 4 and the detection sleeve 9.

[0026] See also Figure 5 The interior of the second sealing gasket 15 is filled with nitrogen. At the same time, the inner side of the second sealing gasket 15 is movably sleeved between the cylinder 4 and the detection sleeve 9. After the cylinder 4 is installed on the inner side of the detection sleeve 9, the push plate 14 is pushed inward at the same time. According to the different diameters of the cylinder 4, the second sealing gasket 15 is squeezed and shrunk. At the same time, the second sealing gasket 15 can extend to the outside of the connection between the detection sleeve 9 and the cylinder 4, thereby improving the sealing of the outside of the connection between the cylinder 4 and the detection sleeve 9.

[0027] See also Figure 5 The screw 17 passes through the mounting sleeve 16, and a nut is installed on the outside of the screw 17. The screw 17 passes through the mounting sleeve 16, and the nut installed on the outside of the screw 17 is rotated at the same time, and then the push plate 14 is blocked on the outside of the detection sleeve 9, driving the detection sleeve 9 and the push plate 14 to tighten and fix.

[0028] See also Figure 4The second pipeline 18 drives the detection sleeve 9 and the interior of the sealing status observation tube 21 to be interconnected. A scale groove is opened on the outside of the sealing status observation tube 21, and the hydraulic device installed inside the cylinder 4 is started through the first pipeline 6. At the same time, after the piston rod 11 extends to the outside, the exhaust valve 20 is opened, and the exhaust valve 20 drives the gas to be discharged. At the same time, the gasket 22 is controlled to fit to one end of the auxiliary box 19, and the cylinder 4 is continuously started. When a leak occurs at the connection between the cylinder 4 and the piston rod 11, the leaked gas is transmitted to the inside of the detection sleeve 9. At the same time, the increase in the internal pressure of the detection sleeve 9 can drive the gasket 22 to move to the other end of the outside of the sealing status observation tube 21, and the moving position of the scale groove opened on the outside of the sealing status observation tube 21 by the pipeline gasket 22 can then be used to detect whether the cylinder 4 is leaking.

[0029] Working principle: When in use, place the cylinder 4 on the upper part of the jacket 2, start the motor 3, the motor 3 drives the piston rod 11 to move to the inside of the detection sleeve 9, and at the same time rotate the threaded rod 8, the threaded rod 8 drives the detection sleeve 9 to move to the contact state with the cylinder 4, and at the same time the first sealing gasket 13 seals the inner side of the connection between the cylinder 4 and the detection sleeve 9, and the second sealing gasket 15 seals the outside of the connection between the cylinder 4 and the detection sleeve 9 to provide the sealing performance of the equipment, start the air pump 5, the air pump 5 drives the gas to be delivered to the inside of the cylinder 4, and at the same time the cylinder 4 drives the piston rod 11 to move to one end, when the gas delivery is continuously driven and leakage occurs inside the cylinder 4, the air pressure pushes the gasket 22 to move, whether the pipe gasket 22 moves, and then whether the equipment is leaking can be detected, and at the same time the motor 3 is started, the motor 3 drives the cylinder 4 to flip, and then whether both ends of the cylinder 4 are leaking can be detected.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for a hydraulic cylinder, comprising a support plate (1), a jacket (2) being mounted on the upper end of the support plate (1), a motor (3) being arranged at the lower end of the jacket (2), a cylinder barrel (4) being clamped inside the jacket (2), a piston rod (11) being mounted on one side of the cylinder barrel (4), an adjustment plate (7) being mounted on the left side of the upper part of the support plate (1), a threaded rod (8) being mounted inside the adjustment plate (7), a detection sleeve (9) being fixedly connected to the upper part of the adjustment plate (7), characterized in that: An air pump (5) is installed on the left side of the upper part of the support plate (1), a first pipeline (6) is installed on one end of the air pump (5), an auxiliary pipeline (10) is installed on the side of the detection sleeve (9), an inner positioning plate (12) is fixedly connected to the inside of the detection sleeve (9), a first sealing gasket (13) is installed on the side of the inner positioning plate (12), a push plate (14) is sleeved on the outside of the cylinder (4), a second sealing gasket (15) is installed on the inner side of the push plate (14), a mounting sleeve (16) is fixedly connected to the outside of the detection sleeve (9), a screw (17) is installed on the side of the push plate (14), an auxiliary box (19) is installed on the side of the detection sleeve (9) through a second pipeline (18), an exhaust valve (20) is installed on the upper part of the auxiliary box (19), a sealing state observation tube (21) is fixedly connected to the side of the exhaust valve (20), and a gasket (22) is movably sleeved inside the sealing state observation tube (21).

2. A leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: The jacket (2) is mounted in the middle of the cylinder (4), while the motor (3) extends to the lower end of the support plate (1).

3. A leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: One end of the first pipe (6) is movably sleeved on one side of the cylinder barrel (4), and the first pipe (6) can pass through the interior of the auxiliary pipe (10). A sealing sleeve is installed on the outside of the auxiliary pipe (10).

4. A leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: The first sealing gasket (13) is installed between the cylinder barrel (4) and the inner positioning plate (12), and a conical groove is provided on the inner side of the detection sleeve (9).

5. The leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: The interior of the second sealing gasket (15) is filled with nitrogen, and the inner side of the second sealing gasket (15) is movably sleeved between the cylinder barrel (4) and the detection sleeve (9).

6. A leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: The screw rod (17) passes through the mounting sleeve (16), and a nut is mounted on the outside of the screw rod (17).

7. A leakage detection device for a hydraulic cylinder according to claim 1, characterized in that: The second pipe (18) drives the detection sleeve (9) and the interior of the sealing state observation tube (21) to communicate with each other, and a scale groove is provided on the exterior of the sealing state observation tube (21).

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