Combined testing machine for testing insulation barrels

Abstract

The present invention discloses a combination test machine for inspecting an insulating cylinder, which is applied to the technical field of combined test machines for insulating cylinders, wherein two groups of fixed components are provided, which are respectively located on the left and right sides of the bearing platform, each group of the fixed components includes a mounting plate 1 fixed on the bearing platform, a mounting sleeve 1 is fixed on the output end of the first drive, a second drive is fixed on one side of the other group of mounting plate 1, and a mounting sleeve 2 is connected to the output end bearing of the second drive; a protrusion is provided in the middle of the mounting sleeve 1 and the mounting sleeve 2, a circular groove is provided on the outer ring of the protrusion in the middle of the mounting sleeve 1 and the mounting sleeve 2, and a pressure sensor is provided on the protrusion in the middle of the mounting sleeve 1 and the mounting sleeve 2 near the inner ring of the insulating cylinder; two groups of cameras are fixed on one side of the mounting plate 1 close to the insulating cylinder, and the device can further judge the cracks on the surface of the insulating cylinder by extrusion, thereby enhancing the test effect.

Description

Technical Field

[0001] The invention belongs to the technical field of insulation tube combination testers, and in particular relates to a combination tester for inspecting insulation tubes. Background Art

[0002] In the power and electrical industries, the insulating cylinder is an important insulating component, and its mechanical properties are directly related to the safe operation and service life of the equipment.

[0003] At present, the mechanical test methods for the mechanical properties of insulation tube parts in China include tensile and compressive tests along the axial direction of the insulation tube and bending tests along the radial direction of the insulation tube, as well as impact tests of the insulation tube. These tests are generally carried out using a combined testing machine.

[0004] However, the impact test method in the existing combined testing machine is relatively simple, and generally a hammer is used to determine whether there are cracks on the surface of the insulation tube. This method can identify larger cracks, but smaller cracks cannot be identified, making it difficult to ensure the effect of the impact test of the insulation tube.

[0005] Therefore, it is necessary to provide a combined testing machine for inspecting the insulating tube, which can further determine the cracks on the surface of the insulating tube by extrusion, enhance the testing effect, and ensure the quality of the insulating tube. Summary of the invention

[0006] The purpose of the present invention is to provide a combined testing machine for inspecting insulating tubes in accordance with the existing material collection device, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a combined testing machine for inspecting an insulating cylinder, comprising a testing table and a testing system, wherein a bearing table is fixed on the testing table, a clamping mechanism is arranged on the bearing table for clamping the insulating cylinder, an impact mechanism is arranged above the bearing table, and the impact mechanism is arranged above the clamping mechanism for impacting the insulating cylinder;

[0008] The clamping mechanism includes a fixing component and a limiting component, wherein:

[0009] The fixing components are provided in two groups, which are respectively located on the left and right sides of the bearing platform, each group of the fixing components includes a mounting plate 1 fixed on the bearing platform, one side of the mounting plate 1 of one group is fixed with a first drive, and the output end of the first drive is fixed with a mounting sleeve 1, and the other side of the mounting plate 1 of the other group is fixed with a second drive, and the output end bearing of the second drive is connected with a mounting sleeve 2;

[0010] The middle of the installation sleeve 1 and the installation sleeve 2 is a protrusion for clamping into the inner ring of the insulating cylinder;

[0011] The outer rings of the middle protrusions of the installation sleeve 1 and the installation sleeve 2 are provided with circular grooves for clamping the insulating cylinder;

[0012] A pressure sensor is provided at the protrusion between the first installation sleeve and the second installation sleeve near the inner circle of the insulating tube;

[0013] Two groups of cameras are fixed on one side of the mounting plate close to the insulating cylinder, and the cameras are located on both sides of the insulating cylinder;

[0014] The limit assembly is provided with two sides, which are respectively located at the front and rear sides of the support platform. Each group of the limit assembly includes a mounting plate 2 fixed on the support platform, a third drive is fixed to one side of the mounting plate 2, and connecting rods are slidably connected to both sides of the mounting plate 2. A push plate is fixed to one end of the connecting rod, and a push rod is fixed to the output end of the third drive, and the push rod is fixedly connected to the push plate.

[0015] The present invention further describes that a circular arc surface is provided on one side of the push plate.

[0016] The present invention further describes that the impact mechanism includes a driving assembly and a hammer assembly, wherein:

[0017] The driving assembly includes four groups of support rods fixed on the bearing platform, the four groups of support rods are evenly distributed around the bearing platform, a top plate is fixed on the top of the four groups of support rods, two groups of screw rods and two groups of sliding rods are respectively arranged between the top plate and the bearing platform, and the two groups of screw rods and the two groups of sliding rods are staggered, wherein:

[0018] The two groups of the screw rods are connected to the top plate and the supporting platform by bearings, the two groups of the sliding rods are fixedly connected to the top plate and the supporting platform, two groups of fourth drives are fixed to the bottom of the supporting platform, and the output end of each group of the fourth drives is fixedly connected to the screw rod.

[0019] The present invention further describes that the hammer assembly includes a connecting plate, and the connecting plate is threadedly connected to the two sets of screw rods, wherein:

[0020] The other two sides of the connecting plate are slidably connected to the sliding rod;

[0021] An impact plate is arranged below the connecting plate, and a plurality of convex blocks are fixed on the bottom of the impact plate, wherein the convex blocks are circular.

[0022] The present invention further describes that a buffer pad is fixed between the impact plate and the connecting plate.

[0023] The present invention further illustrates that the test system includes an acquisition module and an adjustment module, the acquisition module includes an image receiving submodule, a pressure receiving submodule and an analysis submodule, the image receiving submodule is electrically connected to the camera, and the pressure receiving submodule is electrically connected to the pressure sensor;

[0024] The pressure receiving submodule includes a time recording unit;

[0025] The adjustment module includes an extrusion submodule and an alarm submodule, and the extrusion submodule is electrically connected to the third drive.

[0026] The present invention further illustrates that the test system includes the following method of use:

[0027] Method 1: Fix the insulating cylinder by the cooperation of the fixing component and the limiting component. After fixation, the pressure of the insulating cylinder on the circular groove is recorded by the pressure sensor and transmitted to the pressure receiving submodule;

[0028] Method 2: Then control the fourth drive to start, so that the impact plate descends and impacts the surface of the insulating cylinder. When the impact plate completes its work, control the fourth drive to rotate in the opposite direction, drive the impact plate to move upward, and the camera takes a picture of the surface of the insulating cylinder and transmits it to the image receiving submodule to record the state of the surface of the insulating cylinder. Then control the insulating cylinder to rotate and impact again until all surfaces of the insulation are impacted.

[0029] Method 3: After all surfaces of the insulating tube have been impacted, the surface of the insulating tube is photographed for the second time. The front and back photos are compared through the analysis submodule to analyze the pits on the surface of the insulating tube to determine the impact resistance of the insulating tube.

[0030] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adopts a push plate, a third drive and a camera, and controls the push plate to extrude the insulating cylinder through the third drive, and the camera captures whether there are cracks on the upper surface of the insulating cylinder, thereby overcoming the problem of the prior art that tiny cracks cannot be identified, further enhancing the effect of the impact resistance test, and ensuring the production quality of the insulating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a side schematic diagram of the overall structure of the present invention;

[0034] Figure 3The present invention Figure 1 A magnified schematic diagram of region A;

[0035] Figure 4 The present invention Figure 2 A magnified schematic diagram of area B;

[0036] Figure 5 It is a cross-sectional schematic diagram of the installation sleeve 1 and the installation sleeve 2 of the present invention;

[0037] Figure 6 is a two-dimensional schematic diagram of the impact plate of the present invention;

[0038] Figure 7 is a two-dimensional schematic diagram of a push plate of the present invention;

[0039] Figure 8 is a schematic diagram of a test system of the present invention;

[0040] In the figure: 1. test bench; 2. load-bearing platform; 3. support rod; 4. top plate; 5. screw rod; 6. sliding rod; 7. connecting plate; 8. third drive; 9. mounting plate 2; 10. connecting rod; 11. push rod; 12. mounting plate 1; 13. first drive; 14. mounting sleeve 1; 15. second drive; 16. camera; 17. mounting sleeve 2; 18. fourth drive; 19. impact plate; 20. bump; 21. circular groove; 22. buffer pad; 23. pressure sensor; 24. push plate; 25. arc surface. DETAILED DESCRIPTION

[0041] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-8 The present invention provides a technical solution: a combined testing machine for inspecting an insulating tube, comprising a testing platform 1 and a testing system, wherein a bearing platform 2 is fixed on the testing platform 1, a clamping mechanism is arranged on the bearing platform 2 for clamping the insulating tube, an impact mechanism is arranged above the bearing platform 2, and the impact mechanism is arranged above the clamping mechanism for impacting the insulating tube.

[0043] The clamping mechanism includes a fixing component and a limiting component. There are two groups of fixing components, which are respectively located on the left and right sides of the supporting platform 2. Each group of fixing components includes a mounting plate 12 fixed on the supporting platform 2. A first drive 13 is fixed to one side of one group of mounting plates 12, and a mounting sleeve 14 is fixed to the output end of the first drive 13. A second drive 15 is fixed to one side of the other group of mounting plates 12, and a mounting sleeve 2 17 is connected to the output end bearing of the second drive 15.

[0044] There is a protrusion in the middle of the mounting sleeve 14 and the mounting sleeve 2 17, which is used to snap into the inner ring of the insulating cylinder. The outer ring of the protrusion in the middle of the mounting sleeve 14 and the mounting sleeve 2 17 is provided with a circular groove 21, which is used to snap into the insulating cylinder. The protrusion in the middle of the mounting sleeve 14 and the mounting sleeve 2 17 is provided with a pressure sensor 23 near the inner ring of the insulating cylinder, which is used to detect the pressure of the insulating cylinder on the circular groove 21.

[0045] Two groups of cameras 16 are fixed on one side of one of the mounting plates 12 close to the insulating cylinder, and the cameras 16 are located on both sides of the insulating cylinder.

[0046] The limit assembly is provided with two sides, which are respectively located on the front and rear sides of the bearing platform 2. Each set of limit assemblies includes a mounting plate 29 fixed on the bearing platform 2, a third drive 8 is fixed on one side of the mounting plate 29, connecting rods 10 are slidably connected on both sides of the mounting plate 29, a push plate 24 is fixed at one end of the connecting rod 10, a push rod 11 is fixed at the output end of the third drive 8, the push rod 11 is fixedly connected to the push plate 24, and a circular arc surface 25 is provided on one side of the push plate 24 to facilitate adaptation to the surface of the insulating tube.

[0047] It should be noted that the first drive 13 may be a motor, and the third drive 8 and the second drive 15 may be cylinders.

[0048] The initial state of the second drive 15 is the contracted state. The insulating cylinder is placed between the mounting sleeve 14 and the mounting sleeve 2 17. One end of the insulating cylinder is first inserted into the circular groove 21 of the mounting sleeve 14. Then the second drive 15 is started to extend, driving the circular groove 21 on the mounting sleeve 2 17 to contact the other end of the insulating cylinder. The insulating cylinder can be fixed by the cooperation of the mounting sleeve 14 and the mounting sleeve 2 17. Starting the first drive 13 can drive the insulating cylinder to rotate.

[0049] The impact mechanism includes a driving component and a hammering component. The driving component includes four groups of support rods 3 fixed on the bearing platform 2. The four groups of support rods 3 are evenly distributed around the bearing platform 2. A top plate 4 is fixed on the top of the four groups of support rods 3. Two groups of screw rods 5 and two groups of sliding rods 6 are respectively arranged between the top plate 4 and the bearing platform 2. The two groups of screw rods 5 and the two groups of sliding rods 6 are staggered. The two groups of screw rods 5 are connected to the top plate 4 and the bearing platform 2 by bearings. The two groups of sliding rods 6 are fixedly connected to the top plate 4 and the bearing platform 2. Two groups of fourth drives 18 are fixed to the bottom of the bearing platform 2. The output end of each group of fourth drives 18 is fixedly connected to the screw rod 5. The screw rod 5 is driven to rotate by starting the fourth drive 18, which is convenient for driving the hammering component to move downward.

[0050] The hammer assembly includes a connecting plate 7, which is threadedly connected to the two sets of screw rods 5, and the other two sides of the connecting plate 7 are slidably connected to the sliding rods 6. When the screw rods 5 are started, the connecting plate 7 can be driven to move up and down;

[0051] An impact plate 19 is provided below the connecting plate 7, a buffer pad 22 is fixed between the impact plate 19 and the connecting plate 7, a plurality of bumps 20 are fixed at the bottom of the impact plate 19, the bumps 20 are circular, and when the connecting plate 7 moves downward, the impact plate 19 is driven to move downward, so that the bumps 20 contact the surface of the insulating tube.

[0052] The test system includes an acquisition module and an adjustment module. The acquisition module includes an image receiving submodule, a pressure receiving submodule and an analysis submodule. The image receiving submodule is electrically connected to the camera 16, and the pressure receiving submodule is electrically connected to the pressure sensor 23.

[0053] The pressure receiving submodule includes a time recording unit;

[0054] The adjustment module includes an extrusion submodule and an alarm submodule, and the extrusion submodule is electrically connected to the third driver 8 .

[0055] The test system includes the following methods of use:

[0056] Method 1: The insulating cylinder is fixed by the cooperation of the fixing component and the limiting component. After the fixing is completed, the pressure of the insulating cylinder on the circular groove 21 is recorded by the pressure sensor 23 and transmitted to the pressure receiving submodule;

[0057] Specifically, the pressure value detected by the pressure sensor 23 after being fixed is set to be an initial pressure value A;

[0058] Method 2: Then control the fourth drive 18 to start, so that the impact plate 19 descends and impacts the surface of the insulating cylinder. When the impact plate 19 completes its work, control the fourth drive 18 to rotate in the opposite direction, drive the impact plate 19 to move upward, and the camera 16 takes a picture of the surface of the insulating cylinder and transmits it to the image receiving submodule to record the state of the surface of the insulating cylinder. Then control the insulating cylinder to rotate and impact again until all surfaces of the insulation are impacted.

[0059] Specifically, the first drive 13 is controlled to start and drive the insulating cylinder to rotate, and the side that has not been impacted is rotated upward, and the impact plate 19 is controlled to descend again to impact the surface of the insulating cylinder, and the shooting steps are repeated to record the state of the impacted surface, and this step is repeated until each side of the insulating cylinder is impacted and each side to be impacted is recorded.

[0060] Since a plurality of bumps 20 are provided at the bottom of the impact plate 19, when the impact plate 19 impacts the insulating cylinder, pits may appear on the surface of the insulating cylinder due to the action of the bumps 20;

[0061] It should be supplemented that the impact force of the impact plate 19 depends on the rotation speed of the fourth drive 18 .

[0062] Method 3: After all surfaces of the insulation tube have been impacted, take a second photo of the insulation tube surface, compare the photos before and after through the analysis submodule, analyze the pits on the insulation tube surface, and judge the impact resistance of the insulation tube:

[0063] Specifically, after all surfaces of the insulating cylinder have been impacted, the camera 16 is controlled again to take photos of the surface of the insulating cylinder and transmit them to the image receiving submodule, and the first photo taken is compared with the second photo taken. When the pit in the second photo becomes lighter or returns to its original state, it indicates that the insulating cylinder has strong impact resistance. When the pit does not change significantly when the second photo is compared with the first photo, it indicates that the insulating cylinder has poor impact resistance. If cracks are found on the surface of the insulating cylinder captured by the camera 16, the insulating cylinder is directly determined to be defective.

[0064] Furthermore, when the impact resistance of the insulating cylinder is poor, a signal is transmitted to the extrusion submodule to control the third drive 8 to extend so that the arc surfaces 25 on the two groups of push plates 24 contact the surface of the insulating cylinder, thereby extruding the surface of the insulating cylinder. After a period of extrusion, the third drive 8 is controlled to contract, and the first drive 13 is controlled to rotate to rotate the unextended side to the arc surface 25 on the push plate 24, and then the push plate 24 is continuously controlled to move and extrude the surface of the insulating cylinder. Through this step, the pits on the surface of the insulating cylinder can be flattened;

[0065] When all the pits on the surface of the insulating cylinder are pressed, the camera 16 is started again to shoot the surface of the insulating cylinder. If there are still pits on the surface of the insulating cylinder, it means that the insulating cylinder has poor impact resistance, and the signal is transmitted to the alarm submodule to inform the staff.

[0066] Furthermore, when the push plate 24 squeezes the pits on the surface of the insulating tube, the protrusions will be subjected to greater pressure. At this time, the pressure value detected by the pressure sensor 23 when the push plate 24 squeezes the insulating tube is set to B, so B will be greater than A, and the maximum threshold of the B value is set (to avoid the influence of large squeezing force on the quality of the insulating tube). When B reaches the maximum threshold, the insulating tube reaches the maximum deformation limit, the insulating tube is squeezed, and the upper surface of the insulating tube will be stretched. However, since small cracks may be generated when the insulating tube is impacted and cannot be well found, when the upper surface of the insulating tube is squeezed and stretched, it is easier to judge the cracks that are not easy to find. The camera 16 takes a photo of the surface of the insulating tube and transmits it to the image receiving submodule. If cracks are found on the surface of the insulating tube, the insulating tube is located as a defective product, and the signal is transmitted to the alarm submodule to notify the staff to remove it. When there are no cracks on the surface of the insulating tube, the push plate 24 is controlled to restore to its original state and no longer squeeze the insulating tube.

[0067] When the push plate 24 no longer presses the insulating cylinder, the pressure sensor 23 detects the time it takes for the pressure value B to return to A. The time it takes to return to B is set as t. When the insulating cylinder is no longer under pressure, the time recording unit starts timing as ,when When the insulation tube is squeezed, it means that the time it takes for the insulation tube to recover to normal is short, indicating that the overall quality of the insulation tube is good. When , it means that the insulation tube takes a long time to recover after being squeezed, indicating that the quality of the insulation tube is poor.

[0068] Through the above steps, the problem of being unable to identify tiny cracks in the prior art is overcome, the effect of the impact resistance test is further enhanced, and the production quality of the insulating tube is guaranteed.

[0069] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0070] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined testing machine for testing an insulating cylinder, comprising a test bench (1) and a test system, characterized in that: A bearing platform (2) is fixed on the test bench (1), a clamping mechanism is arranged on the bearing platform (2) for clamping the insulating tube, an impact mechanism is arranged above the bearing platform (2), the impact mechanism is arranged above the clamping mechanism and is used to impact the insulating tube; The clamping mechanism includes a fixing component and a limiting component, wherein: The fixing components are provided in two groups, which are respectively located on the left and right sides of the bearing platform (2), each group of the fixing components comprises a mounting plate 1 (12) fixed on the bearing platform (2), a first drive (13) is fixed on one side of the mounting plate 1 (12) of one group, and a mounting sleeve 1 (14) is fixed on the output end of the first drive (13), and a second drive (15) is fixed on one side of the mounting plate 1 (12) of the other group, and a mounting sleeve 2 (17) is connected to the output end bearing of the second drive (15); The middle of the installation sleeve 1 (14) and the installation sleeve 2 (17) is a protrusion for snapping into the inner ring of the insulating cylinder; The raised outer rings in the middle of the mounting sleeve 1 (14) and the mounting sleeve 2 (17) are provided with circular grooves (21) for clamping the insulating cylinder; A pressure sensor (23) is provided on the protrusion between the first installation sleeve (14) and the second installation sleeve (17) near the inner circle of the insulating cylinder; Two groups of cameras (16) are fixed on one side of one of the mounting plates (12) close to the insulating cylinder, and the cameras (16) are located on both sides of the insulating cylinder; The limiting assembly is provided with two sides, which are respectively located at the front and rear sides of the bearing platform (2), each group of the limiting assembly comprises a second mounting plate (9) fixed on the bearing platform (2), a third drive (8) is fixed on one side of the second mounting plate (9), connecting rods (10) are slidably connected to the two sides of the second mounting plate (9), a push plate (24) is fixed at one end of the connecting rod (10), a push rod (11) is fixed at the output end of the third drive (8), and the push rod (11) is fixedly connected to the push plate (24); A circular arc surface (25) is provided on one side of the push plate (24); The impact mechanism includes a driving assembly and a hammer assembly, wherein: The hammer assembly comprises a connecting plate (7), and an impact plate (19) is arranged below the connecting plate (7); The test system comprises an acquisition module and an adjustment module, the acquisition module comprises an image receiving submodule, a pressure receiving submodule and an analysis submodule, the image receiving submodule is electrically connected to the camera (16), and the pressure receiving submodule is electrically connected to the pressure sensor (23); The pressure receiving submodule includes a time recording unit; The adjustment module comprises an extrusion submodule and an alarm submodule, and the extrusion submodule is electrically connected to the third drive (8); The test system includes the following method of use: Method 1: The insulating cylinder is fixed by the cooperation of the fixing component and the limiting component. After the fixing is completed, the pressure of the insulating cylinder on the circular groove (21) is recorded by the pressure sensor (23) and transmitted to the pressure receiving submodule; Method 2: Then control the fourth drive (18) to start, so that the impact plate (19) descends to impact the surface of the insulating cylinder. When the impact plate (19) completes its work, control the fourth drive (18) to rotate in the opposite direction, driving the impact plate (19) to move upward. The camera (16) takes a picture of the surface of the insulating cylinder and transmits it to the image receiving submodule to record the state of the surface of the insulating cylinder. Then control the insulating cylinder to rotate and impact again until all surfaces of the insulation are impacted. Method 3: After all surfaces of the insulation tube have been impacted, the surface of the insulation tube is photographed again, and the before and after photos are compared through the analysis submodule to analyze the pits on the surface of the insulation tube to determine the impact resistance of the insulation tube; After all surfaces of the insulating tube have been impacted, the camera (16) is controlled again to take a photo of the surface of the insulating tube and transmit it to the image receiving submodule, and the first photo is compared with the second photo. When the pit in the second photo becomes lighter or returns to its original state, it indicates that the insulating tube has strong impact resistance. When the pit does not change significantly when the second photo is compared with the first photo, it indicates that the insulating tube has poor impact resistance. If the camera (16) captures cracks on the surface of the insulating tube, it is directly determined that the insulating tube is defective. When the impact resistance of the insulating tube is poor, a signal is transmitted to the extrusion submodule to control the third drive (8) to extend so that the arc surfaces (25) on the two sets of push plates (24) contact the surface of the insulating tube, thereby squeezing the surface of the insulating tube. After squeezing for a period of time, the third drive (8) is controlled to contract, and the first drive (13) is controlled to rotate to rotate the non-pressed side to the arc surface (25) on the push plate (24), and then the push plate (24) is continued to be controlled to move and squeeze the surface of the insulating tube, thereby flattening the pits on the surface of the insulating tube; When the push plate (24) squeezes the pit on the surface of the insulating tube, the protrusion will be subjected to greater pressure. At this time, the pressure value detected by the pressure sensor (23) when the push plate (24) squeezes the insulating tube is set to B, so B will be greater than A. The maximum threshold value of the B value is set. When B reaches the maximum threshold value, the insulating tube reaches the maximum deformation limit, the insulating tube is squeezed, and the upper surface of the insulating tube is stretched. However, since small cracks may be generated when the insulating tube is impacted and cannot be well detected, when the upper surface of the insulating tube is squeezed and stretched, it is easier to judge the cracks that are not easy to be found. The camera (16) takes a photo of the surface of the insulating tube and transmits it to the image receiving submodule. If cracks are found on the surface of the insulating tube, the insulating tube is located as a defective product, and a signal is transmitted to the alarm submodule to notify the staff to remove it. When there are no cracks on the surface of the insulating tube, the push plate (24) is controlled to return to its original state and no longer squeeze the insulating tube. The driving assembly comprises four groups of support rods (3) fixed on the bearing platform (2), the four groups of support rods (3) being evenly distributed around the bearing platform (2), a top plate (4) being fixed on the top of the four groups of support rods (3), two groups of screw rods (5) and two groups of sliding rods (6) being respectively arranged between the top plate (4) and the bearing platform (2), the two groups of screw rods (5) and the two groups of sliding rods (6) being arranged in an alternating manner, wherein: The two groups of the screw rods (5) are connected to the top plate (4) and the support platform (2) via bearings, the two groups of the sliding rods (6) are fixedly connected to the top plate (4) and the support platform (2), and two groups of fourth drives (18) are fixed to the bottom of the support platform (2), and the output end of each group of the fourth drives (18) is fixedly connected to the screw rod (5).

2. The combined testing machine for inspecting insulating cylinders according to claim 1, characterized in that: The connecting plate (7) is threadedly connected to the two sets of screw rods (5), wherein: The other two sides of the connecting plate (7) are slidably connected to the sliding rod (6); A plurality of protrusions (20) are fixed to the bottom of the impact plate (19), and the protrusions (20) are circular.

3. The combined testing machine for inspecting insulating cylinders according to claim 2, characterized in that: A buffer pad (22) is fixed between the impact plate (19) and the connecting plate (7).

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