Hydraulic cylinder pressure test automatic detection platform

Abstract

The utility model discloses a kind of hydraulic cylinder pressure test automatic detection platform, it is related to hydraulic cylinder detection technical field, including support frame, the side of support frame is equipped with pressure test mechanism, the top of support frame is equipped with test platform, the top side of test platform is equipped with test mechanism, in the utility model, the one end of the hydraulic cylinder to be detected is abutted in the side of first abutment plate, first electric push rod works and drives moving plate to move, drives the side of second abutment plate and abuts in the other end of outer cylinder, positioning is carried out to hydraulic cylinder in horizontal transverse, by second electric push rod work and drive moving rod moves, two rotating plates rotate, drive two moving blocks to move, adjust the distance between two moving columns, so that two clamping blocks cooperate and position longitudinal of hydraulic cylinder, improve the accuracy of positioning, prevent uneven stress of cylinder body when pressure test due to positioning deviation, and then cause local deformation.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder testing technology, and in particular to an automatic testing bench for hydraulic cylinder pressure testing. Background Technology

[0002] Hydraulic cylinder pressure testing refers to the pressure test performed on a newly manufactured or repaired hydraulic cylinder to verify whether the hydraulic cylinder has the ability to withstand normal working pressure and the reliability of its sealing performance, thus ensuring the normal operation of the hydraulic system.

[0003] For example, CN210426992U discloses a hydraulic cylinder pressure testing device, including a workbench, an air supply device and a hydraulic pump station on the workbench, the hydraulic pump station is connected to a main oil supply pipe, the main oil supply pipe is connected to several branch oil supply pipes, the air supply device is connected to a main air pipe, the main air pipe is connected to several branch air pipes that correspond one-to-one with the branch oil supply pipes, and the ends of the branch air pipes and branch oil supply pipes are connected to joints. Adjacent branch air pipes and branch oil supply pipes form a group of pressure testing pipelines, and the joint diameters of the joints in the same group of pressure testing pipelines are equal.

[0004] In the existing technology, when testing hydraulic cylinders, fixing only one end of the hydraulic cylinder or clamping it in a single direction is insufficient to withstand the multiple forces under the testing conditions. The weight of the workpiece and the axial force of the test pressure can cause the cylinder to move or shift, resulting in pipeline misalignment and misalignment of pressure test points, which can lead to distorted pressure acquisition or measurement errors, thus affecting the accuracy of the test. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that fixing only one end of the hydraulic cylinder or clamping it in a single direction makes it difficult to resist the influence of multiple forces under the test conditions, thus affecting the accuracy of the test. Therefore, an automatic hydraulic cylinder pressure test bench is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic hydraulic cylinder pressure testing platform, comprising a support frame, a pressure testing mechanism installed on one side of the support frame, a test platform installed on the top of the support frame, a testing mechanism installed on the top side of the test platform, and a first positioning mechanism and a second positioning mechanism installed on the bottom side of the test platform. The first positioning mechanism includes a first electric push rod, a mounting plate fixedly connected to one side of the first electric push rod, a mounting plate fixedly connected to one side of the mounting plate, one end of the first electric push rod passing through the mounting plate and fixedly connected to a moving plate, and one end of the moving plate passing through the test platform and fixedly connected to a second abutment plate. The second positioning mechanism includes moving columns, clamping blocks fixedly connected to opposite sides of the two moving columns, and a second slot opened on the test platform, with the outside of the moving columns slidably connected to the inside of the second slot.

[0007] Preferably, a first slot is provided on one side of the test platform, and the interior of the first slot is slidably connected to the exterior of the movable plate.

[0008] Preferably, a first abutment plate is fixedly connected to the top side of the test platform.

[0009] Preferably, a movable block is fixedly connected to the bottom end of the movable column, a rotating plate is rotatably connected to one end of the movable block, and a movable rod is rotatably connected to the other end of each of the two rotating plates.

[0010] Preferably, one end of the moving rod is fixedly connected to a second electric push rod, and one side of the second electric push rod is fixedly connected to the bottom side of the test platform.

[0011] Preferably, the pressure testing mechanism includes an oil tank and a pressure testing pump. The bottom of the oil tank is fixedly connected to one side of the support frame, and the bottom of the pressure testing pump is fixedly connected to one side of the pressure testing pump through a high-pressure pipeline. The bottom of the pressure testing pump is fixedly connected to the other side of the support frame.

[0012] Preferably, the testing mechanism includes a fixing plate, the bottom side of which is fixedly connected to the top side of the testing platform, and a pressure sensor is fixedly connected to one side of the fixing plate.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, one end of the hydraulic cylinder to be tested is abutted against one side of the first abutting plate. The operation of the first electric push rod drives the moving plate to move, causing one side of the second abutting plate to abut against the other end of the outer cylinder, thereby positioning the hydraulic cylinder horizontally. The operation of the second electric push rod drives the moving rod to move, and the two rotating plates rotate, causing the two moving blocks to move. The distance between the two moving columns is adjusted so that the two clamping blocks cooperate to position the hydraulic cylinder longitudinally, improving the positioning accuracy and preventing uneven force on the cylinder body during the pressure test due to positioning deviation, which could lead to local deformation.

[0015] 2. In this utility model, after the hydraulic cylinder is positioned, it is connected to the hydraulic cylinder through the pipeline of the pressure test pump. The pressure test pump works to fill the rodless chamber of the hydraulic cylinder with oil. When the test pressure is reached, the changes in the hydraulic cylinder are observed, and the pressure resistance and sealing performance of the hydraulic cylinder are tested respectively. The rod of the hydraulic cylinder extends out, and the front end of the rod contacts the pressure sensor. The pressure sensor can measure the applied pressure value and detect the operating pressure of the hydraulic cylinder, realizing the simultaneous detection of multiple performances and improving the testing efficiency and comprehensiveness. Attached Figure Description

[0016] Figure 1 This utility model provides a first three-dimensional structural schematic diagram of an automatic testing platform for hydraulic cylinder pressure testing;

[0017] Figure 2This utility model provides a second three-dimensional structural schematic diagram of an automatic testing platform for hydraulic cylinder pressure testing;

[0018] Figure 3 This utility model provides a schematic diagram of the connection structure between the first positioning mechanism and the second positioning mechanism of an automatic hydraulic cylinder pressure testing platform;

[0019] Figure 4 This utility model provides a disassembly diagram of the first and second positioning mechanisms of an automatic hydraulic cylinder pressure testing platform.

[0020] Legend: 1. Support frame; 2. Testing mechanism; 21. Pressure sensor; 22. Fixing plate; 3. First positioning mechanism; 31. First abutment plate; 32. First slot; 33. Second abutment plate; 34. Moving plate; 35. Mounting plate; 36. First electric push rod; 4. Testing platform; 5. Second positioning mechanism; 51. Second electric push rod; 52. Second slot; 53. Rotating plate; 54. Moving rod; 55. Clamping block; 56. Moving block; 57. Moving column; 6. Pressure testing mechanism; 61. Oil tank; 62. Pressure testing pump. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-4As shown, this utility model provides an automatic hydraulic cylinder pressure testing bench, including a support frame 1. A pressure testing mechanism 6 is installed on one side of the support frame 1. A test platform 4 is installed on the top of the support frame 1. A testing mechanism 2 is installed on the top side of the test platform 4. A first positioning mechanism 3 and a second positioning mechanism 5 are installed on the bottom side of the test platform 4. The first positioning mechanism 3 includes a first electric push rod 36. A mounting plate 35 is fixedly connected to one side of the first electric push rod 36. One side of the mounting plate 35 is fixedly connected to the bottom side of the test platform 4. One end of the first electric push rod 36 passes through the mounting plate 35 and is fixedly connected to a moving plate 34. One end of the moving plate 34 passes through the test platform 4 and is fixedly connected to a second abutment plate 33. The second positioning mechanism 5 includes a moving plate 36 and a moving plate 34. The test platform 4 has a second slot 52, and the outside of the moving column 57 is slidably connected to the inside of the second slot 52. A first slot 32 is opened on one side of the test platform 4, and the inside of the first slot 32 is slidably connected to the outside of the moving plate 34. A first abutting plate 31 is fixedly connected to the top side of the test platform 4. A moving block 56 is fixedly connected to the bottom end of the moving column 57. A rotating plate 53 is rotatably connected to one end of the moving block 56. A moving rod 54 is rotatably connected to the other end of each of the two rotating plates 53. A second electric push rod 51 is fixedly connected to one end of the moving rod 54, and one side of the second electric push rod 51 is fixedly connected to the bottom side of the test platform 4.

[0024] First, the hydraulic cylinder to be tested is placed on the test platform 4. One end of the outer cylinder of the hydraulic cylinder abuts against one side of the first abutment plate 31. The first electric push rod 36 drives the moving plate 34 to move. The moving plate 34 slides inside the first slot 32. The fixed moving plate 34 makes linear motion. The movement of the moving plate 34 drives one side of the second abutment plate 33 to abut against the other end of the outer cylinder of the hydraulic cylinder. The rod of the hydraulic cylinder passes through the second abutment plate 33 from above, positioning the hydraulic cylinder horizontally. The second electric push rod 51 drives the moving rod 54 to move. The two rotating plates 53 rotate, driving the two moving blocks 56 to move. The moving column 57 slides inside the second slot 52. The fixed moving column 57 makes linear motion. Adjusting the distance between the two moving columns 57 allows the two clamping blocks 55 to cooperate in positioning the hydraulic cylinder longitudinally, improving the positioning accuracy and preventing uneven force on the cylinder body during the pressure test due to positioning deviation, which could lead to local deformation.

[0025] Example 2: Figures 1-4As shown, the pressure testing mechanism 6 includes an oil tank 61 and a pressure testing pump 62. The bottom side of the oil tank 61 is fixedly connected to one side of the support frame 1. The bottom of the pressure testing pump 62 is fixedly connected to one side of the support frame 1 through a high-pressure pipeline. The bottom side of the pressure testing pump 62 is fixedly connected to the other side of the support frame 1. The testing mechanism 2 includes a fixing plate 22. The bottom side of the fixing plate 22 is fixedly connected to the top side of the test platform 4. A pressure sensor 21 is fixedly connected to one side of the fixing plate 22.

[0026] After positioning the hydraulic cylinder, it is connected to the hydraulic cylinder through the pipeline of the pressure testing pump 62. The pressure testing pump 62 works to fill the rodless chamber of the hydraulic cylinder with oil. When the test pressure is reached, the changes in the hydraulic cylinder are observed. The pressure resistance and sealing performance of the hydraulic cylinder are tested respectively. The rod of the hydraulic cylinder extends and the front end of the rod contacts the pressure sensor 21. The pressure sensor 21 can measure the applied pressure value and detect the operating pressure of the hydraulic cylinder, realizing the simultaneous detection of multiple performances and improving the testing efficiency and comprehensiveness.

[0027] The method of use and working principle of this device: Place the hydraulic cylinder to be tested on the test platform 4. One end of the outer cylinder of the hydraulic cylinder abuts against one side of the first abutment plate 31. The first electric push rod 36 drives the moving plate 34 to move, causing one side of the second abutment plate 33 to abut against the other end of the outer cylinder, positioning the hydraulic cylinder horizontally. The second electric push rod 51 drives the moving rod 54 to move, and the two rotating plates 53 rotate, driving the two moving blocks 56 to move. Adjust the distance between the two moving columns 57 so that the two clamping blocks 55 cooperate to position the hydraulic cylinder longitudinally. The hydraulic cylinder is connected through the pipeline of the pressure test pump 62. The pressure test pump 62 fills the rodless chamber of the hydraulic cylinder with oil. When the test pressure is reached, observe the changes in the hydraulic cylinder and test the pressure resistance and sealing performance of the hydraulic cylinder. The rod of the hydraulic cylinder extends out, and the front end of the rod contacts the pressure sensor 21. The pressure sensor 21 can measure the applied pressure value and detect the operating pressure of the hydraulic cylinder.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic testing bench for hydraulic cylinder pressure testing, comprising a support frame (1), characterized in that: A pressure testing mechanism (6) is installed on one side of the support frame (1), a test platform (4) is installed on the top of the support frame (1), a test mechanism (2) is installed on the top side of the test platform (4), a first positioning mechanism (3) and a second positioning mechanism (5) are installed on the bottom side of the test platform (4), the first positioning mechanism (3) includes a first electric push rod (36), a mounting plate (35) is fixedly connected to one side of the first electric push rod (36), a mounting plate (35) is fixedly connected to one side of the mounting plate (35), a moving plate (34) is fixedly connected to one end of the first electric push rod (36) through the mounting plate (35), a second abutment plate (33) is fixedly connected to one end of the moving plate (34) through the test platform (4), the second positioning mechanism (5) includes a moving column (57), a clamping block (55) is fixedly connected to one side of each of the two moving columns (57), a second slot (52) is opened on the test platform (4), and the outside of the moving column (57) is slidably connected to the inside of the second slot (52).

2. The automatic testing bench for hydraulic cylinder pressure testing according to claim 1, characterized in that: The test platform (4) has a first slot (32) on one side, and the interior of the first slot (32) is slidably connected to the exterior of the movable plate (34).

3. The automatic testing bench for hydraulic cylinder pressure testing according to claim 1, characterized in that: The top side of the test platform (4) is fixedly connected to a first abutment plate (31).

4. The automatic testing bench for hydraulic cylinder pressure testing according to claim 1, characterized in that: The bottom end of the movable column (57) is fixedly connected to a movable block (56), one end of the movable block (56) is rotatably connected to a rotating plate (53), and the other end of each of the two rotating plates (53) is rotatably connected to a movable rod (54).

5. The automatic testing bench for hydraulic cylinder pressure testing according to claim 4, characterized in that: One end of the moving rod (54) is fixedly connected to a second electric push rod (51), and one side of the second electric push rod (51) is fixedly connected to the bottom side of the test platform (4).

6. The automatic testing bench for hydraulic cylinder pressure testing according to claim 1, characterized in that: The pressure testing mechanism (6) includes an oil tank (61) and a pressure testing pump (62). The bottom of the oil tank (61) is fixedly connected to one side of the support frame (1). The bottom of the pressure testing pump (62) is fixedly connected to one side of the pressure testing pump (62) through a high-pressure pipeline. The bottom of the pressure testing pump (62) is fixedly connected to the other side of the support frame (1).

7. The automatic testing bench for hydraulic cylinder pressure testing according to claim 1, characterized in that: The testing mechanism (2) includes a fixing plate (22), the bottom side of which is fixedly connected to the top side of the testing platform (4), and a pressure sensor (21) is fixedly connected to one side of the fixing plate (22).

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