A test device for engine block wear

Abstract

The present invention relates to the technical field of engine cylinder block testing, and specifically relates to a testing device for engine cylinder block wear, including a base. A bearing platform is fixedly installed on the upper surface of the base, and a cylinder block is arranged on the upper surface of the bearing platform. In the present invention, the staff starts the electric push rod, and its output end drives the lifting column to move into the piston hole of the cylinder block. After the second annular rubber plate located below moves to the lower end of the piston hole, the staff controls the second annular rubber plate located above to move to the corresponding position, and then controls the chuck structure to expand the two first annular rubber plates and seal the piston hole of the cylinder block. Then, the staff fills the test gas into the first corrugated pipe to test the wear degree of the worn part on the inner wall of the piston hole. Since the gas fills the space between the two second annular rubber plates, it is not necessary to fill each piston hole of the cylinder block with air flow to conduct the test.

Description

Technical Field

[0001] The present invention relates to the technical field of engine block testing, and more specifically, to a testing device for engine block wear. Background Art

[0002] Wear of the engine block is one of the key factors affecting the performance and lifespan of the engine. Excessive wear can lead to a decrease in compression ratio, power loss, increased fuel consumption, aggravated noise and soot, and in severe cases, may cause the engine to malfunction. Therefore, regularly using an engine block wear tester for detection is of great significance for ensuring the normal operation of the engine, improving the performance and safety of the vehicle. An existing engine block airtightness testing bench with the publication number CN209606025U includes a mounting plate, a linear guide rail disposed on the mounting plate, a positioning seat slidably disposed on the linear guide rail, and a gantry-type plugging bracket disposed on the mounting plate. The linear guide rail is arranged along the length direction of the mounting plate, and one end thereof extends into the lower part of the gantry-type plugging bracket. An upwardly and downwardly movable upper sealing plate is disposed on the top plate of the gantry-type plugging bracket, and two horizontally movable side sealing plates are oppositely disposed on the inner sides of its two side plates. A driving mechanism for driving the positioning seat to slide along the guide rail is also disposed on the mounting plate. The beneficial effects of the above utility model include: simple structure, accurate positioning, labor saving, and good sealing effect.

[0003] However, in the above solution, after the sealing plate plugs the engine block, the air compressor pressurizes and conveys air into the test cylinder until the cylinder is full of pressure for subsequent testing. However, during the compression and power strokes of the piston in the engine block, the piston hole area near the piston head bears a relatively large pressure and is worn relatively significantly, while the piston hole area corresponding to the piston skirt mainly bears side pressure and is not easily worn. Therefore, if each cylinder block piston hole needs to be filled with air flow for testing, the inflation time is long and the overall testing speed is slow. When batch testing engine blocks, it will seriously affect production efficiency and increase the detection time cost. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a test device for engine block wear, which solves the problem that after the sealing plate seals the engine block in the prior art airtightness test bench, the air compressor pressurizes and conveys air into the test cylinder until the cylinder is full of pressure for subsequent testing. However, during the compression and power strokes of the piston in the engine block, the piston hole area near the piston head bears a large pressure and the wear is relatively obvious, while the piston hole area corresponding to the piston skirt mainly bears the side pressure and is not prone to wear. Therefore, if each cylinder block piston hole needs to be filled with air flow for testing, the inflation time is long and the overall test speed is slow. When batch testing engine blocks, it will seriously affect production efficiency and increase the detection time cost.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A test device for engine block wear, including a base, on the upper surface of which a bearing platform is fixedly installed, and on the upper surface of the bearing platform, an engine block is arranged;

[0007] On the upper surface of the bearing platform, a support frame is fixedly installed, and in the middle of the upper surface of the support frame, an electric push rod is fixedly installed. The output end of the electric push rod passes through the support frame and is provided with a test component for testing the wear of the engine block;

[0008] On both sides of the upper surface of the bearing platform, cylinders are fixedly installed, and on the output ends of both cylinders, clamping plates are fixedly installed.

[0009] Preferably, the test component includes a lifting column fixedly installed at the output end of the electric push rod. On one side of the column body of the lifting column, two chuck structures are arranged. The chuck structure located above is movably arranged on one side of the column body of the lifting column, and the chuck structure located below is sleeved and fixed on the other side of the column body of the lifting column;

[0010] On the opposite ends of the two chuck structures, first annular rubber plates are arranged. On the inner walls of the two first annular rubber plates, second annular rubber plates are fixedly installed through mounting rings. The second annular rubber plate located above is slidably arranged on one side of the column body of the lifting column, and the second annular rubber plate located below is fixedly installed on the other side of the column body of the lifting column;

[0011] A cavity is opened in the lifting column, and a first corrugated pipe is fixedly installed through the inner wall of the cavity.

[0012] Preferably, the chuck structure includes a mounting sleeve, and a threaded disc is rotatably installed in the mounting sleeve through a bearing;

[0013] A plurality of through grooves are formed through the inner wall of the installation sleeve, and a moving frame is slidably arranged in each through groove. A planar thread is arranged on one side of each moving frame close to the threaded disc, and each moving frame is in threaded cooperation with the threaded disc through the corresponding planar thread;

[0014] One side of each moving frame far from the threaded disc is fixedly connected to the corresponding first annular rubber plate together;

[0015] On both sides of the inner wall of each through groove, a limiting block is fixedly installed. Limiting grooves are formed on both surfaces of each moving frame, and each limiting block is slidably arranged in the corresponding limiting groove.

[0016] Preferably, two support plates are fixedly installed in the cavity. A rotating rod is rotatably installed between the two support plates. The upper end of the rotating rod passes through the corresponding support plate and is sleeved with a first external tooth ring;

[0017] An avoidance groove is formed through the inner wall surface of the cavity. A connecting frame is slidably arranged in the avoidance groove. A cross bar is rotatably installed through one side of the connecting frame. First bevel gears are sleeved on both sides of the cross bar. A connecting block is fixedly installed on one side of the connecting frame. A vertical rod is rotatably installed through the upper surface of the connecting block. A second bevel gear is sleeved on one side of the vertical rod. The second bevel gear is meshed with the corresponding first bevel gear. A second external tooth ring is sleeved on the other side of the vertical rod. The second external tooth ring is meshed with the first external tooth ring;

[0018] On the upper surface of the threaded disc close to the first bevel gear, a first bevel gear ring is fixedly installed. The first bevel gear ring is meshed with the corresponding first bevel gear;

[0019] On the upper end of the installation sleeve located above, a connecting ring is fixedly installed. The connecting frame is fixedly installed on the inner wall of the connecting ring.

[0020] Preferably, the lower end of the rotating rod passes through the corresponding support plate and is sleeved with a third bevel gear;

[0021] A round rod is rotatably installed through the inner wall of the cavity. Fourth bevel gears are sleeved on both sides of the round rod. The third bevel gear is meshed with the corresponding fourth bevel gear respectively;

[0022] On the lower surface of the threaded disc close to the fourth bevel gear, a second bevel gear ring is fixedly installed. The second bevel gear ring is meshed with the corresponding fourth bevel gear.

[0023] Preferably, a first motor is fixedly installed on the upper surface of the support plate located below. A third external tooth ring is sleeved on the output shaft end of the first motor. A fourth external tooth ring is sleeved on one side of the rotating rod. The fourth external tooth ring is meshed with the third external tooth ring.

[0024] Preferably, a mounting plate is fixedly installed in the cavity, a second motor is fixedly installed on the upper surface of the mounting plate, and an output shaft of the second motor penetrates through the mounting plate and is fixedly installed with a threaded rod;

[0025] Two sliding grooves are penetrated and formed in the inner wall of the cavity, a lifting frame is slidably arranged in the two sliding grooves together, the lifting frame is threadedly arranged on one side of the threaded rod body, and the lower end of the lifting frame is fixedly connected with a connecting ring.

[0026] Preferably, a first annular groove is formed in the inner wall surface of the second annular rubber plate located above, a first annular airbag is arranged in the first annular groove, a second corrugated pipe is fixedly installed through the inner wall of the cavity, and one end of the second corrugated pipe extends into the first annular airbag;

[0027] A second annular groove is formed in the outer wall surface of the first annular rubber plate located below, a second annular airbag is arranged in the second annular groove, a third corrugated pipe is fixedly installed through the inner wall of the cavity, and one end of the third corrugated pipe extends into the second annular airbag.

[0028] Preferably, two moving grooves are formed in the inner wall of the cavity, moving blocks are slidably arranged in the two moving grooves respectively, and a threaded sleeve is fixedly installed on the opposite sides of the two moving blocks together;

[0029] A threaded section is arranged at the lower end of the rotating rod, and the threaded section of the rotating rod is threadedly arranged inside the threaded sleeve;

[0030] A bolt is threadedly penetrated through the lower end of the lifting column.

[0031] Preferably, a gas booster pump is fixedly installed on one side of the upper surface of the base, a plurality of hoses are fixedly installed at the output end of the gas booster pump, and the first corrugated pipe, the second corrugated pipe and the third corrugated pipe are respectively fixedly connected with the corresponding hoses.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The staff starts the electric push rod, and its output end drives the lifting column to move into the piston hole of the cylinder block. After the second annular rubber plate located below moves to the lower end of the piston hole, the staff controls the second annular rubber plate located above to move to the corresponding position, and then controls the chuck structure to expand the two first annular rubber plates and seal the piston hole of the cylinder block. Then, the staff fills the test gas into the first bellows to test the wear degree of the worn part on the inner wall of the piston hole. Since the gas fills the space between the two second annular rubber plates, it is not necessary to fill each cylinder block's piston hole with air flow for testing. The inflation time is short, and the overall test speed is increased. When batch testing engine cylinder blocks, the production efficiency is greatly improved, and the detection time cost is reduced.

[0034] 2. The staff controls the rotation of the rotating rod, and the rotating rotating rod drives the first external gear ring to rotate. Under the meshing action of the first external gear ring and the second external gear ring, the vertical rod drives the second bevel gear to rotate. Under the meshing action of the second bevel gear and the corresponding first bevel gear, another first bevel gear rotates and meshes with the first bevel gear ring, causing the first bevel gear ring to drive the threaded disc to rotate. The tooth height of the first external gear ring is greater than that of the second external gear ring. Therefore, when the second external gear ring moves following the connecting ring, it can move along the second external gear ring without affecting the meshing.

[0035] 3. After the lifting column moves to the corresponding position, the first annular rubber plate located above expands, and its outer wall can closely fit with the piston hole wall. Then, the staff fills the gas into the first annular airbag through the second bellows and fills the gas into the second annular airbag through the second bellows. After the first annular airbag expands, it can closely fit with the lifting column, thereby enhancing the sealing performance and preventing gas leakage. After the second annular airbag expands, it can closely fit with the piston hole wall, further enhancing the sealing performance.

[0036] 4. The staff rotates the bolt to move its upper end. When the rotating rod rotates, under the thread fit of the threaded section and the threaded sleeve, the threaded sleeve drives the moving block to move along the moving groove direction. After the bottom of the threaded sleeve abuts against the top of the bolt, the rotating rod stops rotating, which is convenient for the staff to adjust the expansion degree of the first annular rubber plate by adjusting the height of the position where the top of the bolt is located, so as to conveniently adjust the expansion degree of the first annular rubber plate according to the aperture of the piston hole of cylinder blocks with different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the overall structural schematic diagram of a test device for engine cylinder block wear according to the present invention;

[0038] Figure 2 is the top - view structural schematic diagram of a test device for engine cylinder block wear according to the present invention;

[0039] Figure 3 Schematic cross-sectional structure diagram at A-A in a test device for engine cylinder block wear according to the present invention Figure 2 ;

[0040] Figure 4 Schematic cross-sectional structure diagram at B-B in a test device for engine cylinder block wear according to the present invention Figure 2 ;

[0041] Figure 5 Schematic enlarged structure diagram at A in a test device for engine cylinder block wear according to the present invention Figure 3 ;

[0042] Figure 6 Schematic enlarged structure diagram at B in a test device for engine cylinder block wear according to the present invention Figure 3 ;

[0043] Figure 7 Schematic enlarged structure diagram at C in a test device for engine cylinder block wear according to the present invention Figure 4 ;

[0044] In the figure: 1, base; 2, carrier platform; 201, cylinder; 202, clamping plate; 3, cylinder block; 4, support frame; 5, electric push rod; 6, test assembly; 601, lifting column; 602, chuck structure; 6021, mounting sleeve; 6022, bearing; 6023, threaded disc; 6024, through groove; 6025, moving frame; 6026, planar thread; 6027, limiting block; 6028, limiting groove; 603, first annular rubber plate; 604, mounting ring; 605, second annular rubber plate; 606, cavity; 607, first bellows; 7, support plate; 8, rotating rod; 9, first external tooth ring; 10, avoidance groove; 11, connecting frame; 12, cross bar; 13, first bevel gear; 14, connecting block; 15, vertical rod; 16, second bevel gear; 17, second external tooth ring; 18, first bevel gear ring; 19, hose; 20, connecting ring; 21, third bevel gear; 22, round rod; 23, fourth bevel gear; 24, second bevel gear ring; 25, first motor; 26, third external tooth ring; 27, fourth external tooth ring; 28, mounting plate; 29, second motor; 30, threaded rod; 31, chute; 32, lifting frame; 33, first annular groove; 34, first annular airbag; 35, second bellows; 36, moving groove; 37, second annular groove; 38, second annular airbag; 39, third bellows; 40, moving block; 41, threaded sleeve; 42, gas booster pump; 43, bolt. Detailed implementation manners

[0045] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] As Figures 1-7 shown, a test device for engine block wear includes a base 1, a bearing platform 2 is fixedly installed on the upper surface of the base 1, and an engine block 3 is arranged on the upper surface of the bearing platform 2;

[0047] A support frame 4 is fixedly installed on the upper surface of the bearing platform 2, an electric push rod 5 is fixedly installed in the middle of the upper surface of the support frame 4, and the output end of the electric push rod 5 passes through the support frame 4 and is provided with a test component 6 for testing the wear of the engine block 3;

[0048] Cylinders 201 are fixedly installed on both sides of the upper surface of the bearing platform 2, and clamping plates 202 are fixedly installed at the output ends of the two cylinders 201.

[0049] The test component 6 includes a lifting column 601, the lifting column 601 is fixedly installed at the output end of the electric push rod 5, and two chuck structures 602 are arranged on one side of the column body of the lifting column 601. The chuck structure 602 located above is movably arranged on one side of the column body of the lifting column 601, and the chuck structure 602 located below is sleeved and fixed on the other side of the column body of the lifting column 601;

[0050] First annular rubber plates 603 are arranged at opposite ends of the two chuck structures 602. Second annular rubber plates 605 are fixedly installed on the inner walls of the two first annular rubber plates 603 through mounting rings 604. The second annular rubber plate 605 located above is slidably arranged on one side of the column body of the lifting column 601, and the second annular rubber plate 605 located below is fixedly installed on the other side of the column body of the lifting column 601;

[0051] A cavity 606 is formed in the lifting column 601, and a first corrugated pipe 607 is fixedly installed through the inner wall of the cavity 606.

[0052] Through the above technical solution, the staff places the cylinder block 3 on the upper surface of the bearing platform 2. Subsequently, the staff activates the air cylinder 201, and its output end drives the clamping plate 202 to move. After the clamping plate 202 clamps the cylinder block 3, the staff activates the electric push rod 5, and its output end drives the lifting column 601 to move into the piston hole of the cylinder block 3. After the second annular rubber plate 605 located below moves to the lower end of the piston hole, the staff controls the second annular rubber plate 605 located above to move to the corresponding position. Subsequently, the chuck structure 602 is controlled to expand the two first annular rubber plates 603 and seal the piston hole of the cylinder block 3. Then, the staff fills the test gas into the first corrugated pipe 607, so as to test the wear degree of the worn part on the inner wall of the piston hole. Since the gas fills the space between the two second annular rubber plates 605, it is not necessary to fill the piston hole of each cylinder block 3 with air flow to test. The inflation time is short, and the overall test speed is increased. When batch detecting the engine cylinder block 3, the production efficiency is greatly improved, and the detection time cost is reduced.

[0053] In this embodiment, the chuck structure 602 includes a mounting sleeve 6021, and a threaded disk 6023 is rotatably mounted in the mounting sleeve 6021 through a bearing 6022;

[0054] A plurality of through grooves 6024 are penetrated and opened on the inner wall of the mounting sleeve 6021, and a moving frame 6025 is slidably arranged in each through groove 6024. A flat thread 6026 is arranged on one side of each moving frame 6025 close to the threaded disk 6023, and each moving frame 6025 is in threaded cooperation with the threaded disk 6023 through the corresponding flat thread 6026;

[0055] One side of each moving frame 6025 away from the threaded disk 6023 is fixedly connected to the corresponding first annular rubber plate 603;

[0056] Limit blocks 6027 are fixedly installed on both sides of the inner wall of each through groove 6024, limit grooves 6028 are opened on both surfaces of each moving frame 6025, and each limit block 6027 is slidably arranged in the corresponding limit groove 6028.

[0057] The staff controls the threaded disk 6023 to rotate. The rotating threaded disk 6023 is in threaded cooperation with the flat thread 6026 of the moving frame 6025. Under the sliding cooperation of the limit block 6027 and the limit groove 6028, the moving frame 6025 moves along the direction of the limit block 6027, thereby driving the first annular rubber plate 603 to expand, and further blocking the inner wall of the piston hole of the cylinder block 3.

[0058] It can be understood that in this application, two support plates 7 are fixedly installed in the cavity 606, a rotating rod 8 is rotatably installed between the two support plates 7, the upper end of the rotating rod 8 passes through the corresponding support plate 7 and is sleeved with a first external tooth ring 9;

[0059] A relief groove 10 is formed through the inner wall surface of the cavity 606. A connecting frame 11 is slidably arranged in the relief groove 10. A cross bar 12 is rotatably installed through one side of the connecting frame 11. First bevel gears 13 are sleeved on both sides of the cross bar 12. A connecting block 14 is fixedly installed on one side of the connecting frame 11. A vertical rod 15 is rotatably installed through the upper surface of the connecting block 14. A second bevel gear 16 is sleeved on one side of the vertical rod 15. The second bevel gear 16 meshes with the corresponding first bevel gear 13. A second external tooth ring 17 is sleeved on the other side of the vertical rod 15. The second external tooth ring 17 meshes with the first external tooth ring 9.

[0060] On the upper surface of the threaded disc 6023 close to the first bevel gear 13, a first bevel gear ring 18 is fixedly installed. The first bevel gear ring 18 meshes with the corresponding first bevel gear 13.

[0061] At the upper end of the upper mounting sleeve 6021, a connecting ring 20 is fixedly installed. The connecting frame 11 is fixedly installed on the inner wall of the connecting ring 20.

[0062] The staff controls the rotation of the rotating rod 8. The rotating rotating rod 8 drives the first external tooth ring 9 to rotate. Under the meshing action of the first external tooth ring 9 and the second external tooth ring 17, the vertical rod 15 drives the second bevel gear 16 to rotate. Under the meshing action of the second bevel gear 16 and the corresponding first bevel gear 13, the other first bevel gear 13 rotates and meshes with the first bevel gear ring 18, so that the first bevel gear ring 18 drives the threaded disc 6023 to rotate. The tooth height of the first external tooth ring 9 is greater than the tooth height of the second external tooth ring 17. Therefore, when the second external tooth ring 17 moves along with the connecting ring 20, it can move along the second external tooth ring 17 without affecting the meshing.

[0063] It can be understood that in the present application, the lower end of the rotating rod 8 passes through the corresponding support plate 7 and is sleeved with a third bevel gear 21;

[0064] A round rod 22 is rotatably installed through the inner wall of the cavity 606. Fourth bevel gears 23 are sleeved on both sides of the round rod 22. The third bevel gear 21 meshes with the corresponding fourth bevel gear 23 respectively;

[0065] On the lower surface of the threaded disc 6023 close to the fourth bevel gear 23, a second bevel gear ring 24 is fixedly installed. The second bevel gear ring 24 meshes with the corresponding fourth bevel gear 23.

[0066] After the rotating rod 8 rotates, under the meshing action of the third bevel gear 21 and the corresponding fourth bevel gear 23, the round rod 22 drives the other fourth bevel gear 23 to rotate. Under the meshing action of this fourth bevel gear 23 and the second bevel gear ring 24, the lower threaded disc 6023 rotates, so that the lower first annular rubber plate 603 expands and plugs the hole wall.

[0067] It can be understood that in the present application, a first motor 25 is fixedly installed on the upper surface of the lower support plate 7. A third external gear ring 26 is sleeved on the output shaft end of the first motor 25. A fourth external gear ring 27 is sleeved on one side of the rod body of the rotating rod 8. The fourth external gear ring 27 meshes with the third external gear ring 26.

[0068] The staff starts the first motor 25, so that its output shaft drives the third external gear ring 26 to rotate. Under the meshing action of the third external gear ring 26 and the fourth external gear ring 27, the rotating rod 8 rotates.

[0069] It can be understood that in the present application, a mounting plate 28 is fixedly installed in the cavity 606. A second motor 29 is fixedly installed on the upper surface of the mounting plate 28. The output shaft of the second motor 29 passes through the mounting plate 28 and is fixedly installed with a threaded rod 30;

[0070] Two sliding grooves 31 are penetrated and opened on the inner wall of the cavity 606. A lifting frame 32 is slidably arranged in the two sliding grooves 31 together. The lifting frame 32 is threadedly arranged on one side of the rod body of the threaded rod 30. The lower end of the lifting frame 32 is fixedly connected with the connecting ring 20.

[0071] The staff starts the second motor 29, so that its output shaft drives the threaded rod 30 to rotate. The rotating threaded rod 30 drives the lifting frame 32 to move along the sliding groove 31 in a threaded advancing manner, so as to facilitate the staff to adjust the height of the position where the upper second annular rubber plate 605 is located.

[0072] It can be understood that in the present application, a first annular groove 33 is formed on the inner wall surface of the upper second annular rubber plate 605. A first annular airbag 34 is arranged in the first annular groove 33. A second corrugated pipe 35 is fixedly installed through the inner wall of the cavity 606. One end of the second corrugated pipe 35 extends into the first annular airbag 34;

[0073] A second annular groove 37 is formed on the outer wall surface of the lower first annular rubber plate 603. A second annular airbag 38 is arranged in the second annular groove 37. A third corrugated pipe 39 is fixedly installed through the inner wall of the cavity 606. One end of the third corrugated pipe 39 extends into the second annular airbag 38.

[0074] After the lifting column 601 moves to the corresponding position, the upper first annular rubber plate 603 expands, and its outer wall can be closely attached to the piston hole wall. Subsequently, the staff fills the first annular airbag 34 with gas through the second corrugated pipe 35 and fills the second annular airbag 38 with gas through the second corrugated pipe 35. After the first annular airbag 34 expands, the first annular airbag 34 can be closely attached to the lifting column 601, so as to enhance the sealing performance and avoid gas leakage. After the second annular airbag 38 expands, it can be closely attached to the piston hole wall to further enhance the sealing performance.

[0075] Two moving grooves 36 are formed in the inner wall of the cavity 606. Moving blocks 40 are slidably arranged in the two moving grooves 36 respectively. A threaded sleeve 41 is fixedly installed on the common side of the two moving blocks 40 facing each other.

[0076] The lower end of the rotating rod 8 is provided with a threaded section, and the threaded section of the rotating rod 8 is threadedly arranged inside the threaded sleeve 41.

[0077] The lower end of the lifting column 601 is threadedly penetrated with a bolt 43.

[0078] The staff rotates the bolt 43 to move its upper end. When the rotating rod 8 rotates, under the threaded fit between the threaded section and the threaded sleeve 41, the threaded sleeve 41 drives the moving block 40 to move along the direction of the moving groove 36. After the bottom of the threaded sleeve 41 abuts against the top of the bolt 43, the rotating rod 8 stops rotating. Furthermore, it is convenient for the staff to adjust the expansion degree of the first annular rubber plate 603 by adjusting the height of the position where the top of the bolt 43 is located, and it is convenient for the staff to adjust the expansion degree of the first annular rubber plate 603 according to the aperture of the piston hole of the cylinder block 3 with different specifications.

[0079] A gas booster pump 42 is fixedly installed on one side of the upper surface of the base 1. A plurality of hoses 19 are fixedly installed at the output end of the gas booster pump 42. The first bellows 607, the second bellows 35 and the third bellows 39 are respectively fixedly connected to the corresponding hoses 19.

[0080] A separate electronic valve is arranged in each output end of the gas booster pump 42.

[0081] The staff starts the gas booster pump 42 and controls the electronic valve so that the gas booster pump 42 can stably supply gas into the separate hose 19.

[0082] The working principle of the testing device for engine cylinder block wear:

[0083] During use, first, the staff places the cylinder block 3 on the upper surface of the bearing platform 2. Subsequently, the staff activates the air cylinder 201, and its output end drives the clamping plate 202 to move. After the clamping plate 202 clamps the cylinder block 3, the staff activates the electric push rod 5, and its output end drives the lifting column 601 to move into the piston hole of the cylinder block 3. After the second annular rubber plate 605 located below moves to the lower end of the piston hole, the staff controls the second annular rubber plate 605 located above to move to the corresponding position. Subsequently, the chuck structure 602 is controlled to expand the two second annular rubber plates 605 and seal the piston hole of the cylinder block 3. Then, the staff fills the test gas into the first corrugated pipe 607 to test the wear degree of the worn part on the inner wall of the piston hole. Since the gas fills the space between the two second annular rubber plates 605, it is not necessary to fill each piston hole of the cylinder block 3 with air flow for testing. The inflation time is short, and the overall test speed is increased. When batch testing the engine cylinder block 3, the production efficiency is greatly improved, and the detection time cost is reduced.

[0084] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, based on the above description, other different forms of changes or variations can be made. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A testing device for engine cylinder wear, comprising a base (1), characterized in that: A bearing platform (2) is fixedly mounted on the upper surface of the base (1), and a cylinder body (3) is arranged on the upper surface of the bearing platform (2); A support frame (4) is fixedly mounted on the upper surface of the bearing platform (2); an electric push rod (5) is fixedly mounted in the middle of the upper surface of the support frame (4); an output end of the electric push rod (5) passes through the support frame (4) and is provided with a test assembly (6) for testing the wear of the cylinder body (3); Cylinders (201) are fixedly mounted on both sides of the upper surface of the bearing platform (2), and clamping plates (202) are fixedly mounted on the output ends of the two cylinders (201); The test assembly (6) comprises a lifting column (601), wherein the lifting column (601) is fixedly mounted on the output end of the electric push rod (5), and two chuck structures (602) are arranged on one side of the column body of the lifting column (601), wherein the upper chuck structure (602) is movably arranged on one side of the column body of the lifting column (601), and the lower chuck structure (602) is sleeved and fixed on the other side of the column body of the lifting column (601); The two chuck structures (602) are each provided with a first annular rubber plate (603) at one opposite end, and the inner walls of the two first annular rubber plates (603) are each fixedly mounted with a second annular rubber plate (605) via a mounting ring (604); the second annular rubber plate (605) located at the upper side is slidably mounted on one side of the column body of the lifting column (601), and the second annular rubber plate (605) located at the lower side is fixedly mounted on the other side of the column body of the lifting column (601); A cavity (606) is provided in the lifting column (601), and a first corrugated pipe (607) is fixedly installed through the inner wall of the cavity (606); The chuck structure (602) comprises a mounting sleeve (6021), in which a threaded disc (6023) is rotatably mounted via a bearing (6022); The inner wall of the installation sleeve (6021) is penetrated by a plurality of through grooves (6024), a movable frame (6025) is slidably arranged in each of the through grooves (6024), a plane thread (6026) is arranged on the side of each of the movable frames (6025) close to the threaded disk (6023), and each of the movable frames (6025) is threadably matched with the threaded disk (6023) through the corresponding plane thread (6026); Each of the movable frames (6025) is fixedly connected to the corresponding first annular rubber plate (603) on a side away from the threaded disk (6023); Limit blocks (6027) are fixedly installed on both sides of the inner wall of each through slot (6024), and limit slots (6028) are provided on both side surfaces of each movable frame (6025), and each limit block (6027) is slidably arranged in the corresponding limit slot (6028); Two support plates (7) are fixedly installed in the cavity (606), a rotating rod (8) is rotatably installed between the two support plates (7), and the upper end of the rotating rod (8) passes through the corresponding support plate (7) and is sleeved with a first outer gear ring (9); An avoidance groove (10) is formed through the inner wall surface of the cavity (606), a connecting frame (11) is slidably arranged in the avoidance groove (10), a cross bar (12) is rotatably installed through one side of the connecting frame (11), both sides of the cross bar (12) are sleeved with a first bevel gear (13), a connecting block (14) is fixedly installed on one side of the connecting frame (11), a vertical rod (15) is rotatably installed through the upper surface of the connecting block (14), a second bevel gear (16) is sleeved on one side of the vertical rod (15), the second bevel gear (16) is meshed with the corresponding first bevel gear (13), and a second outer tooth ring (17) is sleeved on the other side of the vertical rod (15), the second outer tooth ring (17) is meshed with the first outer tooth ring (9); A first bevel gear ring (18) is fixedly mounted on the upper surface of the threaded disk (6023) close to the first bevel gear (13), and the first bevel gear ring (18) is meshed with the corresponding first bevel gear (13); A connecting ring (20) is fixedly mounted on the upper end of the mounting sleeve (6021) located at the top, and the connecting frame (11) is fixedly mounted on the inner wall of the connecting ring (20).

2. A testing device for engine cylinder wear according to claim 1, characterized in that: The lower end of the rotating rod (8) passes through the corresponding supporting plate (7) and is sleeved with a third bevel gear (21); A round rod (22) is rotatably mounted through the inner wall of the cavity (606), and fourth bevel gears (23) are sleeved on both sides of the rod body of the round rod (22), and the third bevel gears (21) are respectively meshed with corresponding fourth bevel gears (23); A second bevel gear ring (24) is fixedly mounted on the lower surface of the threaded disk (6023) close to the fourth bevel gear (23), and the second bevel gear ring (24) is meshed with the corresponding fourth bevel gear (23).

3. A testing device for engine cylinder wear according to claim 2, characterized in that: A first motor (25) is fixedly mounted on the upper surface of the support plate (7) located below, a third outer toothed ring (26) is sleeved on the output shaft end of the first motor (25), a fourth outer toothed ring (27) is sleeved on one side of the shaft of the rotating rod (8), and the fourth outer toothed ring (27) is meshed with the third outer toothed ring (26).

4. A testing device for engine cylinder wear according to claim 1, characterized in that: A mounting plate (28) is fixedly mounted in the cavity (606), a second motor (29) is fixedly mounted on the upper surface of the mounting plate (28), and an output shaft of the second motor (29) passes through the mounting plate (28) and is fixedly mounted with a threaded rod (30); Two slide grooves (31) are formed through the inner wall of the cavity (606), and a lifting frame (32) is slidably arranged in the two slide grooves (31). The lifting frame (32) is threadedly arranged on one side of the threaded rod (30), and the lower end of the lifting frame (32) is fixedly connected to the connecting ring (20).

5. A testing device for engine cylinder wear according to claim 4, characterized in that: The inner wall surface of the second annular rubber plate (605) located at the top is provided with a first annular groove (33), a first annular airbag (34) is arranged in the first annular groove (33), a second corrugated tube (35) is fixedly installed through the inner wall of the cavity (606), and one end of the second corrugated tube (35) extends into the first annular airbag (34); A second annular groove (37) is provided on the outer wall surface of the first annular rubber plate (603) located below, a second annular airbag (38) is arranged in the second annular groove (37), a third bellows (39) is fixedly installed through the inner wall of the cavity (606), and one end of the third bellows (39) extends into the interior of the second annular airbag (38).

6. The test device for engine cylinder wear according to claim 1, characterized in that: The inner wall of the cavity (606) is provided with two movable grooves (36), and movable blocks (40) are slidably arranged in the two movable grooves (36), and threaded sleeves (41) are fixedly installed on opposite sides of the two movable blocks (40); The lower end of the rotating rod (8) is provided with a threaded section, and the threaded section of the rotating rod (8) is threadedly arranged inside the threaded sleeve (41); A bolt (43) is threadedly provided at the lower end of the lifting column (601).

7. The test device for engine cylinder wear according to claim 1, characterized in that: A gas booster pump (42) is fixedly mounted on one side of the upper surface of the base (1); a plurality of hoses (19) are fixedly mounted on the output end of the gas booster pump (42); and the first bellows (607), the second bellows (35) and the third bellows (39) are respectively fixedly connected to corresponding hoses (19).

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