Hydraulic cylinder testing equipment

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses hydraulic cylinder testing equipment, which comprises a base, an adjusting assembly is fixedly mounted at the top end of the base, a clamping assembly is connected to the top of the adjusting assembly, a hydraulic cylinder is clamped on the inner wall of the clamping assembly, a longitudinal detection plate is fixedly mounted on the top surface of the base, and a clamping assembly is connected to the top of the longitudinal detection plate. And the top surface of the base is fixedly connected with a transverse detection plate. Through the design of two groups of adjusting assemblies, the position of the clamping assembly can be adjusted according to the adjusting assemblies, and hydraulic cylinders of different specifications can be stably clamped, so that the clamping device can adapt to different hydraulic cylinders, and the application range of the clamping device can be wider.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder testing device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating 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. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device.

[0003] The performance of the hydraulic cylinder is directly related to the overall performance of the equipment, especially in some application scenarios with high precision requirements. If the piston rod has a large deviation in the specified precision stroke control under load, the operating accuracy of the equipment will be greatly reduced. Since the length of the hydraulic cylinder piston rod is much larger than the diameter of the piston rod, the longitudinal and radial bending strength and stability of the piston rod need to be tested and checked before the hydraulic cylinder leaves the factory.

[0004] After the hydraulic cylinder is produced, it is usually necessary to perform a balance test on the hydraulic cylinder leaving the factory. However, traditional equipment can usually only adapt to one type of hydraulic cylinder during the balance test of the hydraulic cylinder, resulting in the inability to achieve stable clamping control of the hydraulic cylinder during the balance test of hydraulic cylinders produced in other specifications, thus affecting the accuracy of the test. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a hydraulic cylinder testing device, which has the advantages of being adaptable to a variety of hydraulic cylinder balance tests and solves the problem of hydraulic cylinder piston rod balance testing.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder testing device, comprising a base, an adjusting component is fixedly installed on the top of the base, the top of the adjusting component is connected to a clamping component, the inner wall of the clamping component clamps a hydraulic cylinder, a longitudinal detection plate is fixedly installed on the top surface of the base, a transverse detection plate is fixedly connected to the top surface of the base, a longitudinal distance sensor is fixedly connected to the top of the longitudinal detection plate, a transverse distance sensor is fixedly connected to one side of the transverse detection plate, a sliding groove is opened on the top of the base, and a rotating shaft is rotatably connected to the inside of the sliding groove.

[0009] By adopting the above scheme: the output shaft of the hydraulic cylinder is driven to move to one side above the longitudinal detection plate and the side of the transverse detection plate by starting the hydraulic cylinder, and as the output shaft moves, the longitudinal distance sensor can record the longitudinal offset distance of the output shaft, and the transverse distance sensor can record the transverse offset distance of the output shaft, thereby detecting whether the balance of the hydraulic cylinder meets the standards.

[0010] Preferably, the adjustment assembly includes a fixed rail, a fixed rod is fixedly connected to the inside of the fixed rail, a sliding block is slidably connected to the outer wall of the fixed rod, a connecting block is fixedly connected to the top surface of the sliding block, a connecting rod is plugged into the inner wall of the connecting block, a control block is plugged into the outer wall of the connecting rod, a bidirectional threaded rod is threadedly connected to the inner wall of the control block, one end of the bidirectional threaded rod is fixedly connected to the output shaft of the motor, and the other end of the bidirectional threaded rod is rotatably connected to a fixed plate.

[0011] By adopting the above scheme: through the two sets of designs of the adjustment components, the position of the clamping component can be adjusted according to the adjustment components, and stable clamping of hydraulic cylinders of different specifications can be achieved, so that it can be adapted to different hydraulic cylinders, that is, the device can be used in a wider range.

[0012] Preferably, the clamping assembly includes a clamping plate, a connecting groove is provided inside the clamping plate, a connecting spring is fixedly connected to the bottom of the inner wall of the connecting groove, and the other end of the connecting spring is fixedly connected to a connecting plate.

[0013] By adopting the above scheme: through the movable setting of the clamping plate, the clamping of the upper and lower sides of the hydraulic cylinder can be achieved, and because the two clamping plates are slidably connected to the connecting plate through the connecting spring, the outer sides of hydraulic cylinders of different specifications can be clamped, and through the tension of the connecting spring, the two clamping plates can always move toward one side of the connecting plate, so that pressure can always be applied to the side of the hydraulic cylinder, ensuring stable clamping of the hydraulic cylinder.

[0014] Preferably, the longitudinal detection plate and the transverse detection plate are placed at 90 degrees, and the longitudinal detection plate and the transverse detection plate are respectively located directly below and on the side of the output shaft of the hydraulic cylinder.

[0015] Preferably, the number of the clamping assemblies is four, and the four clamping assemblies are divided into two groups, which are respectively fixedly connected to the top of the connecting block, the inner wall of the connecting block on the left side is fixedly connected to one end of the connecting rod, and the inner wall of the connecting block on the right side is slidably connected to the other end of the connecting rod.

[0016] By adopting the above scheme, the distance between the two groups of connecting blocks can be adjusted, thereby adjusting the distance between the two groups of clamping components, so as to achieve stable clamping of hydraulic cylinders of different lengths.

[0017] Preferably, the bottom of the control block is slidably connected to the top surface of the base, the bidirectional threaded rod is divided into two sections, the threads on the surfaces of the two sections of the bidirectional threaded rod are in opposite directions, and the connection positions of the two control blocks and the bidirectional threaded rod are symmetrically distributed with the horizontal center line of the bidirectional threaded rod as the center.

[0018] By adopting the above scheme: the motor is started, and the two control blocks on the outer wall of the bidirectional threaded rod are moved to the same side or to opposite sides at the same time, so as to ensure that the two control blocks are always symmetrically distributed, that is, the hydraulic cylinder is always on the horizontal center line of the base, and the output shaft of the hydraulic cylinder is stably clamped.

[0019] Preferably, a threaded block is provided inside the sliding groove, the inner wall of the threaded block is threadedly connected to the outer wall of the rotating shaft, and the top of the threaded block is fixedly connected to the fixed rail on the right side.

[0020] By adopting the above solution: the position of the right fixed rail can be adjusted.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the utility model provides a hydraulic cylinder testing device, which has the following beneficial effects:

[0023] 1. The hydraulic cylinder testing equipment drives the output shaft of the hydraulic cylinder to move to one side above the longitudinal detection plate and the side of the transverse detection plate by starting the hydraulic cylinder. As the output shaft moves, the longitudinal distance sensor can record the longitudinal offset distance of the output shaft, and the transverse distance sensor can record the transverse offset distance of the output shaft, thereby detecting whether the balance of the hydraulic cylinder meets the standard. Through the two sets of designs of the adjustment components, the position of the clamping component can be adjusted according to the adjustment components, and hydraulic cylinders of different specifications can be stably clamped, so that it can be adapted to different hydraulic cylinders, that is, the device can be used in a wider range.

[0024] 2. The hydraulic cylinder testing equipment can clamp the upper and lower sides of the hydraulic cylinder through the movable setting of the clamping plates, and because the two clamping plates are slidably connected to the connecting plate through the connecting springs, the outer sides of hydraulic cylinders of different specifications can be clamped, and the tension of the connecting springs can make the two clamping plates always move toward one side of the connecting plate, so that pressure can always be applied to the side of the hydraulic cylinder to ensure stable clamping of the hydraulic cylinder, and the distance between the two groups of connecting blocks can be adjusted to adjust the distance between the two groups of clamping components, so as to achieve stable clamping of hydraulic cylinders of different lengths and start the motor, and the two control blocks on the outer wall of the bidirectional threaded rod can move to the same side or to the opposite sides at the same time, so as to ensure that the two control blocks are always symmetrically distributed, that is, it can ensure that the hydraulic cylinder is always on the horizontal center line of the base, and stably clamp the output shaft of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is an exploded view of the structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the adjustment component of the utility model;

[0028] Figure 4 It is a schematic diagram of the clamping assembly of the utility model.

[0029] In the figure: 1. base; 2. adjustment component; 3. clamping component; 4. hydraulic cylinder; 5. longitudinal detection plate; 6. longitudinal distance sensor; 7. transverse detection plate; 8. transverse distance sensor; 9. sliding groove; 10. rotating shaft; 21. fixed rail; 22. fixed rod; 23. sliding block; 24. connecting block; 25. connecting rod; 26. control block; 27. bidirectional threaded rod; 28. motor; 29. ​​fixed plate; 31; clamping plate; 32. connecting groove; 33. connecting spring; 34. connecting plate. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-2A hydraulic cylinder testing device comprises a base 1, an adjusting component 2 is fixedly installed on the top of the base 1, a clamping component 3 is connected to the top of the adjusting component 2, a hydraulic cylinder 4 is clamped on the inner wall of the clamping component 3, a longitudinal detection plate 5 is fixedly installed on the top surface of the base 1, a transverse detection plate 7 is fixedly connected to the top surface of the base 1, a longitudinal distance sensor 6 is fixedly connected to the top of the longitudinal detection plate 5, a transverse distance sensor 8 is fixedly connected to one side of the transverse detection plate 7, a sliding groove 9 is opened on the top of the base 1, and a rotating shaft 10 is rotatably connected inside the sliding groove 9.

[0032] in:

[0033] The longitudinal detection plate 5 and the transverse detection plate 7 are placed at a 90-degree angle. The longitudinal detection plate 5 and the transverse detection plate 7 are respectively located directly below and on the side of the output shaft of the hydraulic cylinder 4.

[0034] Specific:

[0035] The activation of the hydraulic cylinder 4 drives the output shaft of the hydraulic cylinder 4 to move to one side above the longitudinal detection plate 5 and on the side of the transverse detection plate 7. As the output shaft moves, the longitudinal distance sensor 6 can record the longitudinal offset distance of the output shaft, and the transverse distance sensor 8 can record the transverse offset distance of the output shaft, thereby detecting whether the balance of the hydraulic cylinder 4 meets the standards.

[0036] During use:

[0037] By starting the hydraulic cylinder 4, the output shaft is driven to move on one side of the longitudinal detection plate 5 and the transverse detection plate 7. The longitudinal offset distance and the transverse offset distance generated by the output shaft during the movement are calculated respectively by the longitudinal distance sensor 6 and the transverse distance sensor 8, thereby realizing the balance detection of the hydraulic cylinder 4.

[0038] according to Figure 3 As shown, the adjustment component 2 includes a fixed rail 21, a fixed rod 22 is fixedly connected inside the fixed rail 21, a sliding block 23 is slidably connected to the outer wall of the fixed rod 22, a connecting block 24 is fixedly connected to the top surface of the sliding block 23, a connecting rod 25 is inserted into the inner wall of the connecting block 24, a control block 26 is inserted into the outer wall of the connecting rod 25, a bidirectional threaded rod 27 is threadedly connected to the inner wall of the control block 26, one end of the bidirectional threaded rod 27 is fixedly connected to the output shaft of the motor 28, and the other end of the bidirectional threaded rod 27 is rotatably connected to the fixed plate 29.

[0039] in:

[0040] The bottom of the control block 26 is slidably connected to the top surface of the base 1, and the bidirectional threaded rod 27 is divided into two sections. The threads on the surfaces of the two sections of the bidirectional threaded rod 27 are in opposite directions, and the connection positions of the two control blocks 26 and the bidirectional threaded rod 27 are symmetrically distributed with the horizontal center line of the bidirectional threaded rod 27 as the center. A threaded block is arranged inside the sliding groove 9, and the inner wall of the threaded block is threadedly connected to the outer wall of the rotating shaft 10, and the top of the threaded block is fixedly connected to the fixed rail 21 on the right side.

[0041] Specific:

[0042] Through the two sets of designs of the adjustment component 2, the position of the clamping component 3 can be adjusted according to the adjustment component 2, and the hydraulic cylinders 4 of different specifications can be stably clamped, so that it can be adapted to different hydraulic cylinders 4, that is, the use range of the device can be wider. The motor 28 is started, and the two control blocks 26 on the outer wall of the bidirectional threaded rod 27 are moved to the same side or to the opposite side at the same time, which is used to ensure that the two control blocks 26 are always symmetrically distributed, that is, it can ensure that the hydraulic cylinder 4 is always on the horizontal center line of the base 1, and the output shaft of the hydraulic cylinder 4 is stably clamped. The position of the right fixed rail 21 is adjusted.

[0043] During use:

[0044] By starting the motor 28, the output shaft of the motor 28 drives the bidirectional threaded rod 27 to rotate, so that the two control blocks 26 move to one side or the opposite side at the same time, and the control block 26 drives the connecting rod 25 to move. The movement of the connecting rod 25 drives the sliding block 23 to slide on the outer wall of the fixed rod 22, so that the position of the clamping assembly 3 can be adjusted.

[0045] according to Figure 4 As shown, the clamping assembly 3 includes a clamping plate 31 , a connecting groove 32 is formed inside the clamping plate 31 , a connecting spring 33 is fixedly connected to the bottom of the inner wall of the connecting groove 32 , and a connecting plate 34 is fixedly connected to the other end of the connecting spring 33 .

[0046] in:

[0047] There are four clamping assemblies 3, which are divided into two groups and are respectively fixedly connected to the top of the connecting block 24. The inner wall of the connecting block 24 on the left is fixedly connected to one end of the connecting rod 25, and the inner wall of the connecting block 24 on the right is slidably connected to the other end of the connecting rod 25.

[0048] Specific:

[0049] Through the movable setting of the clamping plate 31, the upper and lower sides of the hydraulic cylinder 4 can be clamped, and because the two clamping plates 31 are slidably connected to the connecting plate 34 through the connecting spring 33, the outer sides of the hydraulic cylinders 4 of different specifications can be clamped, and through the tension of the connecting spring 33, the two clamping plates 31 can always move toward one side of the connecting plate 34, so that pressure can always be applied to the side of the hydraulic cylinder 4 to ensure stable clamping of the hydraulic cylinder 4. The distance between the two groups of connecting blocks 24 can be adjusted, thereby adjusting the distance between the two groups of clamping assemblies 3, so as to achieve stable clamping of hydraulic cylinders 4 of different lengths.

[0050] During use:

[0051] The clamping plate 31 is slidably connected to the connecting plate 34 via the connecting spring 33, so as to stably clamp the hydraulic cylinders 4 at different heights.

[0052] When in use, by starting the hydraulic cylinder 4, the output shaft is driven to move on one side of the longitudinal detection plate 5 and the transverse detection plate 7, and the longitudinal offset distance and the transverse offset distance generated by the output shaft during the movement are respectively calculated by the longitudinal distance sensor 6 and the transverse distance sensor 8, thereby realizing the balance detection of the hydraulic cylinder 4, and by starting the motor 28, the output shaft of the motor 28 drives the bidirectional threaded rod 27 to rotate, so that the two control blocks 26 move to one side or the opposite side at the same time, and the connecting rod 25 is driven to move by the control block 26. The movement of the connecting rod 25 drives the sliding block 23 to slide on the outer wall of the fixed rod 22, so that the position of the clamping assembly 3 can be adjusted, and the clamping plate 31 is slidably connected to the connecting plate 34 through the connecting spring 33 to realize stable clamping of the hydraulic cylinders 4 at different heights.

[0053] To summarize, the hydraulic cylinder testing equipment drives the output shaft of the hydraulic cylinder 4 to move to one side above the longitudinal detection plate 5 and the side of the transverse detection plate 7 through the start of the hydraulic cylinder 4, and as the output shaft moves, the longitudinal distance sensor 6 can record the longitudinal offset distance of the output shaft, and the transverse distance sensor 8 can record the transverse offset distance of the output shaft, thereby detecting whether the balance of the hydraulic cylinder 4 meets the standard. Through the two sets of designs of the adjustment component 2, the position of the clamping component 3 can be adjusted according to the adjustment component 2, and stable clamping of hydraulic cylinders 4 of different specifications can be achieved, so that it can be adapted to different hydraulic cylinders 4, that is, the device can be used in a wider range. Through the movable setting of the clamping plate 31, the upper and lower sides of the hydraulic cylinder 4 can be clamped, and because the two clamping plates 31 are slidably connected to the connecting plate 34 by the connecting spring 33, the outer sides of hydraulic cylinders 4 of different specifications can be clamped, and through the pulling force of the connecting spring 33, the two clamping plates 31 can always move toward one side of the connecting plate 34, so that pressure can always be applied to the side of the hydraulic cylinder 4 to ensure stable clamping of the hydraulic cylinder 4, and the distance between the two groups of connecting blocks 24 can be adjusted to adjust the distance between the two groups of clamping assemblies 3, so as to achieve stable clamping of hydraulic cylinders 4 of different lengths and start the motor 28. The two control blocks 26 on the outer wall of the bidirectional threaded rod 27 can move to the same side or to the opposite sides at the same time, so as to ensure that the two control blocks 26 are always symmetrically distributed, that is, it can ensure that the hydraulic cylinder 4 is always on the horizontal center line of the base 1, and stably clamp the output shaft of the hydraulic cylinder 4.

[0054] 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 hydraulic cylinder testing device, comprising a base (1), characterized in that: An adjusting component (2) is fixedly mounted on the top of the base (1), a clamping component (3) is connected to the top of the adjusting component (2), a hydraulic cylinder (4) is clamped on the inner wall of the clamping component (3), a longitudinal detection plate (5) is fixedly mounted on the top surface of the base (1), a transverse detection plate (7) is fixedly connected to the top surface of the base (1), a longitudinal distance sensor (6) is fixedly connected to the top of the longitudinal detection plate (5), a transverse distance sensor (8) is fixedly connected to one side of the transverse detection plate (7), a sliding groove (9) is provided on the top of the base (1), and a rotating shaft (10) is rotatably connected to the inside of the sliding groove (9).

2. A hydraulic cylinder testing device according to claim 1, characterized in that: The adjustment assembly (2) comprises a fixed rail (21), the interior of the fixed rail (21) is fixedly connected to a fixed rod (22), the outer wall of the fixed rod (22) is slidably connected to a sliding block (23), the top surface of the sliding block (23) is fixedly connected to a connecting block (24), the inner wall of the connecting block (24) is plugged with a connecting rod (25), the outer wall of the connecting rod (25) is plugged with a control block (26), the inner wall of the control block (26) is threadedly connected to a bidirectional threaded rod (27), one end of the bidirectional threaded rod (27) is fixedly connected to an output shaft of a motor (28), and the other end of the bidirectional threaded rod (27) is rotatably connected to a fixed plate (29).

3. A hydraulic cylinder testing device according to claim 1, characterized in that: The clamping assembly (3) comprises a clamping plate (31), a connecting groove (32) is provided inside the clamping plate (31), a connecting spring (33) is fixedly connected to the bottom of the inner wall of the connecting groove (32), and the other end of the connecting spring (33) is fixedly connected to a connecting plate (34).

4. A hydraulic cylinder testing device according to claim 1, characterized in that: The longitudinal detection plate (5) and the transverse detection plate (7) are placed at a 90-degree angle, and the longitudinal detection plate (5) and the transverse detection plate (7) are respectively located directly below and on the side of the output shaft of the hydraulic cylinder (4).

5. The hydraulic cylinder testing device according to claim 1, characterized in that: The number of the clamping assemblies (3) is four, and the four clamping assemblies (3) are divided into two groups, which are respectively fixedly connected to the top of the connecting block (24), the inner wall of the connecting block (24) located on the left side is fixedly connected to one end of the connecting rod (25), and the inner wall of the connecting block (24) located on the right side is slidably connected to the other end of the connecting rod (25).

6. A hydraulic cylinder testing device according to claim 2, characterized in that: The bottom of the control block (26) is slidably connected to the top surface of the base (1); the bidirectional threaded rod (27) is divided into two sections; the threads on the surfaces of the two sections of the bidirectional threaded rod (27) are in opposite directions; and the connection positions of the two control blocks (26) and the bidirectional threaded rod (27) are symmetrically distributed with the horizontal center line of the bidirectional threaded rod (27) as the center.

7. The hydraulic cylinder testing device according to claim 1, characterized in that: A threaded block is provided inside the sliding groove (9), the inner wall of the threaded block is threadedly connected to the outer wall of the rotating shaft (10), and the top of the threaded block is fixedly connected to the fixed rail (21) on the right side.

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