Testing device for hydraulic actuator

Abstract

The utility model discloses a testing device for a hydraulic actuator, and relates to the technical field suitable for special purposes. The testing device for the hydraulic actuator comprises a workbench; the detection assembly is arranged on the workbench, the detection assembly comprises a first clamping hole, a connecting piece, an annular detection piece, a second clamping hole, a third clamping hole, a groove, a rotating rod, a spring, a limiting column and a wafer piece, the groove is formed in the workbench, the third clamping hole is formed in the groove, the rotating rod rotates on the workbench, the limiting column penetrates through the rotating rod in a sliding mode, and the wafer piece passes through the annular detection piece in the detection assembly. By replacing the annular detection piece, the annular detection piece which can be completely matched with the to-be-detected shaft is selected to rotate along with the to-be-detected shaft, so that the rotation angle of the to-be-detected shaft after hydraulic oil is injected into the two oil injection pipes is detected, and the accuracy of the hydraulic actuator is judged. The requirements of to-be-detected shafts with different sizes can be met through replacement of the annular detection piece, and the application range of the testing device is expanded.

Description

Technical Field

[0001] The utility model relates to a technical field suitable for special purposes, in particular to a testing device for a hydraulic actuator. Background Art

[0002] Hydraulic actuators generate pressure by conveying liquid, thereby driving the output shaft to rotate or move linearly to achieve valve control. When producing hydraulic actuators, they need to be tested to determine their accuracy in valve control. The accuracy can be regarded as the difference between the output shaft rotation angle driven by the injection of hydraulic oil and the specified angle. Testing equipment is often required to measure to ensure the accuracy of the hydraulic actuator. The output shafts of hydraulic actuators vary in size, making measurement more troublesome. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art and to provide a testing device for a hydraulic actuator, which can solve the problem that the output shafts of the hydraulic actuators are of different sizes and are difficult to measure.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a testing device for a hydraulic actuator, comprising a workbench;

[0005] The detection component is arranged on a workbench, and the detection component includes a first clamping hole, a connecting piece, a ring-shaped detection piece, a second clamping hole, a third clamping hole, a groove, a rotating rod, a spring, a limit column and a round piece. The groove is arranged on the workbench, the third clamping hole is arranged in the groove, the rotating rod rotates on the workbench, the limit column slides through the rotating rod, and the round piece is welded on the limit column.

[0006] Preferably, one end of the spring is welded to the disc piece, and the other end of the spring is welded to the rotating rod.

[0007] Preferably, the connecting piece is clamped inside the third clamping hole, and the connecting piece is clamped inside the second clamping hole.

[0008] Preferably, the annular detection member rotates inside the connecting member, and a clamping hole is provided on the connecting member.

[0009] Preferably, the limiting column is clamped inside the third clamping hole, and the limiting column is clamped inside the first clamping hole.

[0010] Preferably, the annular detection member is clamped on the shaft to be detected, and a hydraulic actuator is provided on the shaft to be detected.

[0011] Preferably, two limit brackets are installed on the upper surface of the workbench, and both limit brackets are in contact with the hydraulic actuator.

[0012] Preferably, oil injection pipes are fixedly connected to the surfaces of both of the limiting brackets, hoses are installed on the surfaces of both of the oil injection pipes, and the other ends of the two hoses are respectively connected to both ends of the corresponding hydraulic actuator.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) For the testing device for the hydraulic actuator, through the annular detection member in the detection assembly, by replacing the annular detection member, an annular detection member that can completely cooperate with the shaft to be detected is selected to rotate following the shaft to be detected, so as to detect the rotation angle of the shaft to be detected after hydraulic oil is injected into the two oil injection pipes, and determine the accuracy of the hydraulic actuator. The replaceable annular detection member meets the requirements of different sizes of shafts to be detected, expanding the use range of the testing device.

[0015] (2) For the testing device for the hydraulic actuator, since the rotation of the shaft to be detected will drive the annular detection member to rotate, and the annular detection member is connected to the connecting member. To improve the stability of the annular detection member during the detection of the shaft to be detected, by providing the third clamping hole and the first clamping hole, and clamping the limiting column inside the first clamping hole and the third clamping hole, the stability of the first clamping hole clamped in the third clamping hole is enhanced. Description of the Drawings

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0017] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0018] Figure 2 is a schematic diagram of the connection relationship between the second clamping hole and the connecting member of the present utility model;

[0019] Figure 3 is the present utility model Figure 2 is an enlarged schematic diagram at A in the present utility model.

[0020] Reference numerals: 1, workbench; 2, limiting bracket; 3, oil injection pipe; 4, hose; 5, hydraulic actuator; 6, first clamping hole; 7, connecting member; 8, shaft to be detected; 9, annular detection member; 10, second clamping hole; 11, third clamping hole; 12, groove; 13, rotating rod; 14, spring; 15, limiting column; 16, disc member. Detailed Embodiment

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that regarding the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If the first and second are described, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: a test device for a hydraulic actuator, including a workbench 1;

[0026] The detection component is arranged on the workbench 1. The detection component includes a first clamping hole 6, a connecting piece 7, an annular detection piece 9, a second clamping hole 10, a third clamping hole 11, a groove 12, a rotating rod 13, a spring 14, a limiting column 15 and a circular piece 16. The groove 12 is opened on the workbench 1, the third clamping hole 11 is opened in the groove 12, the rotating rod 13 rotates on the workbench 1, the limiting column 15 slides through the rotating rod 13, and the circular piece 16 is welded on the limiting column 15.

[0027] One end of the spring 14 is welded on the circular piece 16, and the other end of the spring 14 is welded on the rotating rod 13.

[0028] The connecting piece 7 is stuck inside the third clamping hole 11, and the connecting piece 7 is stuck inside the second clamping hole 10.

[0029] The annular detection piece 9 rotates inside the connecting piece 7, and the first clamping hole 6 is opened on the connecting piece 7.

[0030] The limiting column 15 is stuck inside the third clamping hole 11, and the limiting column 15 is stuck inside the first clamping hole 6.

[0031] The annular detection piece 9 is stuck on the shaft to be detected 8, and a hydraulic actuator 5 is arranged on the shaft to be detected 8.

[0032] Two limiting brackets 2 are installed on the upper surface of the workbench 1, and both two limiting brackets 2 are in contact with the hydraulic actuator 5.

[0033] On the surfaces of both of the two limiting brackets 2, oil injection pipes 3 are fixedly connected. On the surfaces of both of the two oil injection pipes 3, hoses 4 are installed. The other ends of the two hoses 4 are respectively connected to both ends of the corresponding hydraulic actuator 5.

[0034] When it is necessary to detect the hydraulic actuator 5;

[0035] First of all, select a suitable annular detection piece 9 according to the shaft 8 to be detected.

[0036] Secondly, drive the connecting piece 7 to move through an external force. The connecting piece 7 moves and gets stuck inside the groove 12 and the second clamping hole 10. Rotate the rotating rod 13. The rotation of the rotating rod 13 drives the limiting column 15 to move. When the limiting column 15 moves to coincide with the position of the first clamping hole 6, the spring 14 resets and drives the disc piece 16 to move downward. The downward movement of the disc piece 16 drives the limiting column 15 to move downward and get stuck inside the first clamping hole 6 and the third clamping hole 11 respectively.

[0037] Finally, place the hydraulic actuator 5 between the two limiting brackets 2 for restriction. Then, connect the two hoses 4 to both ends of the hydraulic actuator 5 respectively, inject hydraulic oil into the two oil injection pipes 3 respectively, detect the rotation condition of the annular detection piece 9, and determine the rotation condition of the shaft 8 to be detected.

[0038] Through the annular detection piece 9 in the detection assembly, by replacing the annular detection piece 9, select an annular detection piece 9 that can fully cooperate with the shaft 8 to be detected and rotate following the shaft 8 to be detected, so as to detect the rotation angle of the shaft 8 to be detected after injecting hydraulic oil into the two oil injection pipes 3, determine the accuracy of the hydraulic actuator 5, and expand the use range of the test device by the replaceable annular detection piece 9 to adapt to the requirements of different sizes of the shafts 8 to be detected.

[0039] Since the rotation of the shaft 8 to be detected will drive the annular detection piece 9 to rotate, and the annular detection piece 9 is connected to the connecting piece 7. To improve the stability of the annular detection piece 9 when detecting the shaft 8 to be detected, by setting the third clamping hole 11 and the first clamping hole 6, and by getting the limiting column 15 stuck inside the first clamping hole 6 and the third clamping hole 11, strengthen the stability of the first clamping hole 6 stuck in the third clamping hole 11.

[0040] Working principle:

[0041] When it is necessary to detect the hydraulic actuator 5;

[0042] First of all, select a suitable annular detection piece 9 according to the shaft 8 to be detected.

[0043] Secondly, drive the connecting piece 7 to move through an external force. The connecting piece 7 moves and gets stuck inside the groove 12 and the second clamping hole 10. Rotate the rotating rod 13. The rotation of the rotating rod 13 drives the limiting column 15 to move. When the limiting column 15 moves to coincide with the position of the first clamping hole 6, the spring 14 resets and drives the disc part 16 to move downward. The downward movement of the disc part 16 drives the limiting column 15 to move downward and get stuck inside the first clamping hole 6 and the third clamping hole 11 respectively.

[0044] Finally, place the hydraulic actuator 5 between the two limiting brackets 2 for restriction. Then, connect the two hoses 4 to both ends of the hydraulic actuator 5 respectively.

[0045] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. A test device for a hydraulic actuator, characterized in that: include: Workbench (1); The detection component is arranged on a workbench (1), and comprises a first clamping hole (6), a connecting piece (7), an annular detection piece (9), a second clamping hole (10), a third clamping hole (11), a groove (12), a rotating rod (13), a spring (14), a limiting column (15) and a round piece (16); the groove (12) is arranged on the workbench (1), the third clamping hole (11) is arranged in the groove (12), the rotating rod (13) rotates on the workbench (1), the limiting column (15) slides through the rotating rod (13), and the round piece (16) is welded to the limiting column (15).

2. A testing device for a hydraulic actuator according to claim 1, characterized in that: One end of the spring (14) is welded to the disc member (16), and the other end of the spring (14) is welded to the rotating rod (13).

3. A testing device for a hydraulic actuator according to claim 1, characterized in that: The connecting piece (7) is clamped in the interior of the third clamping hole (11), and the connecting piece (7) is clamped in the interior of the second clamping hole (10).

4. A testing device for a hydraulic actuator according to claim 1, characterized in that: The annular detection member (9) rotates inside the connecting member (7), and the first clamping hole (6) is provided on the connecting member (7).

5. A testing device for a hydraulic actuator according to claim 1, characterized in that: The limiting column (15) is clamped in the interior of the clamping hole three (11), and the limiting column (15) is clamped in the interior of the clamping hole one (6).

6. A testing device for a hydraulic actuator according to claim 1, characterized in that: The annular detection member (9) is clamped on the shaft to be detected (8), and a hydraulic actuator (5) is arranged on the shaft to be detected (8).

7. A testing device for a hydraulic actuator according to claim 1, characterized in that: Two limit brackets (2) are installed on the upper surface of the workbench (1), and the two limit brackets (2) are both in contact with the hydraulic actuator (5).

8. A testing device for a hydraulic actuator according to claim 7, characterized in that: The surfaces of the two limit brackets (2) are fixedly connected with oil filling pipes (3), the surfaces of the two oil filling pipes (3) are installed with hoses (4), and the other ends of the two hoses (4) are respectively connected to the two ends of the corresponding hydraulic actuators (5).

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