Testing device for abrasion of engine cylinder block

Abstract

The invention relates to the technical field of engine cylinder body testing, in particular to an engine cylinder body abrasion testing device which comprises a base, a bearing table is fixedly installed on the upper surface of the base, and a cylinder body is arranged on the upper surface of the bearing table. A worker starts an electric push rod, the output end of the electric push rod drives a lifting column to move into a piston hole of a cylinder body, after a second annular rubber plate located on the lower portion moves to the lower end of the piston hole, the worker controls a second annular rubber plate located on the upper portion to move to the corresponding position, and then a chuck structure is controlled; the two first annular rubber plates are expanded to seal the piston hole of the cylinder body, then a worker injects gas for testing into the first corrugated pipe, so that the abrasion degree of the abraded part of the inner wall of the piston hole is tested, and due to the fact that the space between the two second annular rubber plates is filled with the gas, the abrasion degree of the abraded part of the inner wall of the piston hole is tested. Therefore, the test can be carried out without filling the piston hole of each cylinder body with the air flow.

Description

Technical Field

[0001] The invention relates to the technical field of engine cylinder body testing, and in particular to a testing device for engine cylinder body wear. Background Art

[0002] Engine cylinder wear is one of the key factors affecting engine performance and life. Excessive wear will lead to a decrease in compression ratio, power loss, increased fuel consumption, increased noise and smoke, and in severe cases may cause the engine to fail to work properly. Therefore, regular use of an engine cylinder wear tester for testing is of great significance for ensuring the normal operation of the engine and improving the performance and safety of the vehicle. The existing publication number is CN209606025U, which is an engine cylinder air tightness test bench, including a mounting plate, a linear guide rail arranged on the mounting plate, a positioning seat slidably arranged on the linear guide rail, and a gantry-type plugging bracket arranged 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. The top plate of the gantry-type plugging bracket is provided with an upper sealing plate that can be lifted vertically, and two side sealing plates that can move horizontally are relatively arranged on the inner sides of its two side plates. The mounting plate is also provided with a driving mechanism that drives the positioning seat to slide along the guide rail. The beneficial effects of the above utility model include: simple structure, precise positioning, manpower saving, and good sealing effect.

[0003] However, in the above scheme, after the sealing plate seals the engine cylinder, the air is pressurized by the air compressor and delivered into the test cylinder until the cylinder is fully pressurized for subsequent testing. However, during the compression and power strokes of the piston in the engine cylinder, the piston hole area near the piston head is subjected to greater pressure and the wear is relatively obvious, while the piston hole area corresponding to the piston skirt is mainly subjected to side pressure and is not prone to wear. Therefore, if the piston hole of each cylinder must be filled with air flow for testing, the inflation time will be long and the overall test speed will be slow, which will seriously affect production efficiency and increase the time cost of testing when testing engine cylinders in batches. Summary of the invention

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

[0005] To achieve the above object, the technical solution adopted by the present invention is: A testing device for engine cylinder wear, comprising a base, a bearing platform is fixedly mounted on the upper surface of the base, and a cylinder body is arranged on the upper surface of the bearing platform; A support frame is fixedly installed on the upper surface of the bearing platform, an electric push rod is fixedly installed on the middle part of the upper surface of the support frame, and 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 cylinder body; Cylinders are fixedly installed on both sides of the upper surface of the bearing platform, and clamping plates are fixedly installed on the output ends of the two cylinders.

[0006] Preferably, the test assembly comprises a lifting column, the lifting column is fixedly mounted on the output end of the electric push rod, two chuck structures are arranged on one side of the column body of the lifting column, the upper chuck structure is movably arranged on one side of the column body of the lifting column, and the lower chuck structure is sleeved and fixed on the other side of the column body of the lifting column; The two chuck structures are each provided with a first annular rubber plate at one opposite end, and the inner walls of the two first annular rubber plates are fixedly mounted with a second annular rubber plate via a mounting ring, the second annular rubber plate located above is slidably mounted on one side of the lifting column body, and the second annular rubber plate located below is fixedly mounted on the other side of the lifting column body; A cavity is defined in the lifting column, and a first corrugated pipe is fixedly installed through the inner wall of the cavity.

[0007] Preferably, the chuck structure comprises a mounting sleeve, in which a threaded disc is rotatably mounted via a bearing; The inner wall of the installation sleeve is penetrated by a plurality of through grooves, each of which is slidably provided with a moving frame, each of which is provided with a flat thread on the side close to the threaded disk, and each of which cooperates with the thread of the threaded disk through the corresponding flat thread; Each of the movable frames is fixedly connected to the corresponding first annular rubber plate on one side away from the threaded disk; Limiting blocks are fixedly installed on both sides of the inner wall of each through slot, and limiting slots are arranged on both side surfaces of each moving frame. Each limiting block is slidably arranged in the corresponding limiting slot.

[0008] Preferably, two support plates are fixedly installed in the cavity, a rotating rod is rotatably installed between the two support plates, and the upper end of the rotating rod passes through the corresponding support plates and is sleeved with a first outer gear ring; 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 body, a connecting block is fixedly installed on one side of the connecting frame, a vertical pole is rotatably installed through the upper surface of the connecting block, a second bevel gear is sleeved on one side of the vertical pole body, the second bevel gear is meshed with the corresponding first bevel gear, a second outer gear ring is sleeved on the other side of the vertical pole body, the second outer gear ring is meshed with the first outer gear ring; A first bevel gear ring is fixedly mounted on the upper surface of the threaded disk close to the first bevel gear, and the first bevel gear ring is meshed with the corresponding first bevel gear; A connecting ring is fixedly installed on the upper end of the installation sleeve located at the top, and the connecting frame is fixedly installed on the inner wall of the connecting ring.

[0009] Preferably, the lower end of the rotating rod passes through the corresponding supporting plate and is sleeved with a third bevel gear; A round rod is rotatably installed through the inner wall of the cavity, and fourth bevel gears are sleeved on both sides of the round rod, and the third bevel gears are respectively meshed with corresponding fourth bevel gears; A second bevel gear ring is fixedly mounted on the lower surface of the threaded disk close to the fourth bevel gear, and the second bevel gear ring is meshed with the corresponding fourth bevel gear.

[0010] Preferably, a first motor is fixedly mounted on the upper surface of the support plate located below, a third outer gear ring is sleeved on the output shaft end of the first motor, a fourth outer gear ring is sleeved on one side of the rotating rod body, and the fourth outer gear ring is meshed with the third outer gear ring.

[0011] 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 passes through the mounting plate and is fixedly installed with a threaded rod; Two slide grooves are formed through the inner wall of the cavity, and a lifting frame is slidably arranged in the two slide grooves. 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 to the connecting ring.

[0012] Preferably, a first annular groove is formed on the inner wall surface of the second annular rubber plate located at the top, a first annular airbag is arranged in the first annular groove, a second bellows is fixedly installed through the inner wall of the cavity, and one end of the second bellows extends into the first annular airbag; A second annular groove is formed on the outer wall surface of the first annular rubber plate at the bottom, a second annular airbag is arranged in the second annular groove, a third bellows is fixedly installed through the inner wall of the cavity, and one end of the third bellows extends into the second annular airbag.

[0013] Preferably, the inner wall of the cavity is provided with two moving grooves, and moving blocks are slidably arranged in the two moving grooves, and threaded sleeves are fixedly installed on opposite sides of the two moving blocks; The lower end of the rotating rod is provided with a threaded section, and the threaded section of the rotating rod is threadedly arranged inside the threaded sleeve; The lower end of the lifting column is threaded with a bolt.

[0014] 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 on the output end of the gas booster pump, and the first bellows, the second bellows and the third bellows are fixedly connected to the corresponding hoses respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The staff starts the electric push rod so that its output end drives the lifting column to move into the piston hole of the cylinder body. 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 body. Then the staff injects the test gas into the first bellows to test the wear degree of the wear part of 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 the piston hole of each cylinder body with air flow for testing. The inflation time is short and the overall test speed is increased. When batch testing engine cylinders, the production efficiency is greatly improved and the detection time cost is reduced.

[0016] 2. The staff controls the rotation of the rotating rod, and the rotating rod drives the first outer gear ring to rotate. Under the meshing action of the first outer gear ring and the second outer 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, the other first bevel gear rotates and meshes with the first bevel gear ring, so that the first bevel gear ring drives the threaded disk to rotate. The tooth height of the first outer gear ring is greater than the tooth height of the second outer gear ring. Therefore, when the second outer gear ring follows the movement of the connecting ring, it can move along the second outer gear ring without affecting the meshing.

[0017] 3. After the lifting column moves to the corresponding position, the first annular rubber plate located above expands, and its outer wall can fit tightly with the piston hole wall. Then the staff injects gas into the first annular airbag through the second bellows, and injects gas into the second annular airbag through the second bellows. After the first annular airbag expands, the first annular airbag can fit tightly with the lifting column, thereby enhancing the sealing and avoiding gas leakage. After the second annular airbag expands, it can fit tightly with the piston hole wall, thereby further enhancing the sealing.

[0018] 4. The staff rotates the bolt to move its upper end. When the rotating rod rotates, the threaded section cooperates with the thread of the threaded sleeve, and the threaded sleeve drives the moving block to move along the moving groove. After the bottom of the threaded sleeve contacts the top of the bolt, the rotating rod stops rotating, which makes it convenient for the staff to adjust the expansion degree of the first annular rubber sheet by adjusting the height of the top of the bolt, thereby making it convenient for the staff to adjust the expansion degree of the first annular rubber sheet according to the aperture of the piston hole of the cylinder body of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a testing device for engine cylinder wear of the present invention; Figure 2 It is a schematic diagram of a top view of a testing device for engine cylinder wear according to the present invention; Figure 3 The present invention is a testing device for engine cylinder wear Figure 2 Schematic diagram of the cross-section structure at AA in the middle; Figure 4 The present invention is a testing device for engine cylinder wear Figure 2 Schematic diagram of the cross-section structure at BB in the middle; Figure 5 The present invention is a testing device for engine cylinder wear Figure 3 A schematic diagram of the structure enlarged in the middle; Figure 6 The present invention is a testing device for engine cylinder wear Figure 3 A schematic diagram of the structure enlarged at B; Figure 7 The present invention is a testing device for engine cylinder wear Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0020] In the figure: 1, base; 2, bearing platform; 201, cylinder; 202, clamping plate; 3, cylinder body; 4, support frame; 5, electric push rod; 6, test assembly; 601, lifting column; 602, chuck structure; 6021, mounting sleeve; 6022, bearing; 6023, threaded disk; 6024, through groove; 6025, moving frame; 6026, flat thread; 6027, limit block; 6028, limit groove; 603, first annular rubber plate; 604, mounting ring; 605, second annular rubber plate; 606, cavity; 607, first corrugated pipe; 7, support plate; 8, rotating rod; 9, first outer gear 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 outer gear 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 outer gear ring; 27, fourth outer gear ring; 28, mounting plate; 29, second motor; 30, threaded rod; 31, slide groove; 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 DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 making creative work are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 7 As shown, a testing device for engine cylinder wear comprises a base 1, a bearing platform 2 is fixedly mounted on the upper surface of the base 1, and a cylinder 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 support platform 2, an electric push rod 5 is fixedly mounted in the middle of the upper surface of the support frame 4, and an 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 cylinder body 3; Cylinders 201 are fixedly mounted on both sides of the upper surface of the support platform 2 , and clamping plates 202 are fixedly mounted on the output ends of the two cylinders 201 .

[0023] The test assembly 6 includes a lifting column 601, which is fixedly mounted at the output end of the electric push rod 5. Two chuck structures 602 are arranged on one side of the column body of the lifting column 601. 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 provided with a second annular rubber plate 605 via a mounting ring 604. The upper second annular rubber plate 605 is slidably provided on one side of the column body of the lifting column 601, and the lower second annular rubber plate 605 is fixedly provided on the other side of the column body of the lifting column 601. A cavity 606 is defined in the lifting column 601 , and a first bellows 607 is fixedly installed through the inner wall of the cavity 606 .

[0024] Through the above technical solution, the staff places the cylinder body 3 on the upper surface of the supporting platform 2, and then the staff starts the cylinder 201 so that its output end drives the clamping plate 202 to move. After the clamping plate 202 clamps the cylinder body 3, the staff starts the electric push rod 5 so that its output end drives the lifting column 601 to move into the piston hole of the cylinder body 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, and then controls the chuck structure 602 so that the two first annular rubber plates 603 expand and seal the piston hole of the cylinder body 3. Then the staff injects the test gas into the first bellows 607 to test the wear degree of the wear part of 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 body 3 with air flow for testing. The inflation time is short and the overall test speed is increased. When the engine cylinder body 3 is tested in batches, the production efficiency is greatly improved and the detection time cost is reduced.

[0025] In this embodiment, the chuck structure 602 includes 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 provided with a plurality of through slots 6024, and a moving frame 6025 is slidably arranged in each through slot 6024. A flat thread 6026 is arranged on the side of each moving frame 6025 close to the threaded disk 6023, and each moving frame 6025 is threadably matched with the threaded disk 6023 through the corresponding flat thread 6026; Each moving frame 6025 is fixedly connected to the corresponding first annular rubber plate 603 at one side away from the threaded disk 6023; Limiting blocks 6027 are fixedly installed on both sides of the inner wall of each through slot 6024 , and limiting slots 6028 are provided on both side surfaces of each movable frame 6025 . Each limiting block 6027 is slidably disposed in the corresponding limiting slot 6028 .

[0026] The staff controls the rotation of the threaded disk 6023, and the rotating threaded disk 6023 cooperates with the flat thread 6026 of the movable frame 6025. Under the sliding cooperation of the limit block 6027 and the limit groove 6028, the movable frame 6025 moves along the direction of the limit block 6027, thereby driving the first annular rubber plate 603 to expand, and then blocking the inner wall of the piston hole of the cylinder body 3.

[0027] It can be understood that in the present 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, 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, and 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, and 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, and 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, and the second bevel gear 16 is meshed with the corresponding first bevel gear 13. A second outer gear ring 17 is sleeved on the other side of the vertical rod 15, and the second outer gear ring 17 is meshed with the first outer gear 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 , and the connecting frame 11 is fixedly mounted on the inner wall of the connecting ring 20 .

[0028] The staff controls the rotating rod 8 to rotate, and the rotating rotating rod 8 drives the first outer gear ring 9 to rotate. Under the meshing action of the first outer gear ring 9 and the second outer gear 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 disk 6023 to rotate. The tooth height of the first outer gear ring 9 is greater than the tooth height of the second outer gear ring 17. Therefore, when the second outer gear ring 17 moves following the connecting ring 20, it can move along the second outer gear ring 17 without affecting the meshing.

[0029] It can be understood that in the present application, the lower end of the rotating rod 8 passes through the corresponding supporting plate 7 and is sleeved with the third bevel gear 21; A round rod 22 is rotatably installed 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 the 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 .

[0030] 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 another fourth bevel gear 23 to rotate, and under the meshing action of the fourth bevel gear 23 and the second bevel gear ring 24, the threaded disk 6023 located below rotates, thereby expanding the first annular rubber plate 603 located below and blocking the hole wall.

[0031] It can be understood that in the present application, a first motor 25 is fixedly mounted on the upper surface of the support plate 7 located below, a third outer gear ring 26 is sleeved on the output shaft end of the first motor 25, a fourth outer gear ring 27 is sleeved on one side of the shaft of the rotating rod 8, and the fourth outer gear ring 27 is meshed with the third outer gear ring 26.

[0032] The staff starts the first motor 25 so that its output shaft drives the third outer gear ring 26 to rotate. Under the meshing action of the third outer gear ring 26 and the fourth outer gear ring 27, the rotating rod 8 rotates.

[0033] It can be understood that in the present application, 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, an output shaft of the second motor 29 passes through the mounting plate 28 and a threaded rod 30 is fixedly mounted thereon; Two slide grooves 31 are formed through the inner wall of the cavity 606 . A lifting frame 32 is slidably disposed in the two slide grooves 31 . The lifting frame 32 is threadedly disposed on one side of the threaded rod 30 . The lower end of the lifting frame 32 is fixedly connected to the connecting ring 20 .

[0034] 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 slide groove 31 by screwing in the thread, thereby facilitating the staff to adjust the height of the second annular rubber plate 605 located above.

[0035] It can be understood that in the present application, a first annular groove 33 is formed on the inner wall surface of the second annular rubber plate 605 located at the top, a first annular airbag 34 is arranged in the first annular groove 33, a second bellows 35 is fixedly installed through the inner wall of the cavity 606, and one end of the second bellows 35 extends into the first annular airbag 34; A second annular groove 37 is formed on the outer wall surface of the first annular rubber plate 603 located below, and a second annular airbag 38 is arranged in the second annular groove 37. A third bellows 39 is fixedly installed on the inner wall of the cavity 606, and one end of the third bellows 39 extends to the inside of the second annular airbag 38.

[0036] After the lifting column 601 moves to the corresponding position, the first annular rubber plate 603 located above expands, and its outer wall can fit tightly with the piston hole wall. Then the staff injects gas into the first annular airbag 34 through the second bellows 35, and injects gas into the second annular airbag 38 through the second bellows 35. After the first annular airbag 34 expands, the first annular airbag 34 can fit tightly with the lifting column 601, thereby enhancing the sealing and avoiding gas leakage. After the second annular airbag 38 expands, it can fit tightly with the piston hole wall, further enhancing the sealing.

[0037] Two moving grooves 36 are formed on the inner wall of the cavity 606. Moving blocks 40 are slidably arranged in the two moving grooves 36. A threaded sleeve 41 is fixedly installed on opposite sides of the two moving blocks 40. A threaded section is disposed at the lower end of the rotating rod 8, and the threaded section of the rotating rod 8 is threadedly disposed inside the threaded sleeve 41; A bolt 43 is threadedly provided at the lower end of the lifting column 601 .

[0038] The staff rotates the bolt 43 to move its upper end. When the rotating rod 8 rotates, the threaded section cooperates with the thread of the threaded sleeve 41, and the threaded sleeve 41 drives the moving block 40 to move along the moving groove 36. After the bottom of the threaded sleeve 41 contacts the top of the bolt 43, the rotating rod 8 stops rotating, which makes it convenient for the staff to adjust the expansion degree of the first annular rubber plate 603 by adjusting the height of the position of the top of the bolt 43, and to adjust the expansion degree of the first annular rubber plate 603 according to the aperture of the piston hole of the cylinder body 3 of different specifications.

[0039] A gas booster pump 42 is fixedly installed on one side of the upper surface of the base 1 , and a plurality of hoses 19 are fixedly installed on the output end of the gas booster pump 42 . The first bellows 607 , the second bellows 35 and the third bellows 39 are fixedly connected to the corresponding hoses 19 , respectively.

[0040] Each output end of the gas booster pump 42 is provided with a separate electronic valve.

[0041] The staff starts the gas booster pump 42 and controls the electronic valve so that the gas booster pump 42 can stably supply gas to the separate hose 19 .

[0042] Working principle of the test device for engine block wear: When in use, first, the staff places the cylinder body 3 on the upper surface of the supporting platform 2, and then the staff starts the cylinder 201 so that its output end drives the clamping plate 202 to move. After the clamping plate 202 clamps the cylinder body 3, the staff starts the electric push rod 5 so that its output end drives the lifting column 601 to move into the piston hole of the cylinder body 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, and then controls the chuck structure 602 so that the two second annular rubber plates 605 expand and seal the piston hole of the cylinder body 3. Then the staff injects the test gas into the first bellows 607 to test the wear degree of the wear part of 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 body 3 with air flow for testing. The inflation time is short and the overall test speed is increased. When batch testing the engine cylinder bodies 3, the production efficiency is greatly improved and the detection time cost is reduced.

[0043] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection 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 provided on the upper surface of the bearing platform (2); A support frame (4) is fixedly mounted on the upper surface of the support 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 component (6) for testing the wear of the cylinder body (3); Cylinders (201) are fixedly mounted on both sides of the upper surface of the support platform (2), and clamping plates (202) are fixedly mounted on the output ends of the two cylinders (201).

2. A testing device for engine cylinder wear according to claim 1, characterized in that: 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); A first annular rubber plate (603) is disposed at opposite ends of the two chuck structures (602); a second annular rubber plate (605) is fixedly mounted on the inner walls of the two first annular rubber plates (603) via a mounting ring (604); the second annular rubber plate (605) located at the top 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 bottom 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 tube (607) is fixedly installed through the inner wall of the cavity (606).

3. A testing device for engine cylinder wear according to claim 2, characterized in that: 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 provided with a plurality of through grooves (6024), each of which is slidably provided with a moving frame (6025), each of which is provided with a plane thread (6026) on a side close to the threaded disk (6023), and each of which is threadably matched with the threaded disk (6023) via a 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 mounted 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 disposed in a corresponding limit slot (6028).

4. A testing device for engine cylinder wear according to claim 3, characterized in that: 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 mounted 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 mounted on one side of the connecting frame (11), a vertical rod (15) is rotatably mounted 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).

5. A testing device for engine cylinder wear according to claim 4, 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).

6. A testing device for engine cylinder wear according to claim 5, 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).

7. The test device for engine cylinder wear according to claim 4, 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 disposed in the two slide grooves (31). The lifting frame (32) is threadedly disposed 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).

8. The test device for engine cylinder wear according to claim 7, 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 bellows (35) is fixedly installed through the inner wall of the cavity (606), and one end of the second bellows (35) extends into the first annular airbag (34); A second annular groove (37) is formed 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).

9. The test device for engine cylinder wear according to claim 4, characterized in that: Two movable grooves (36) are formed on the inner wall of the cavity (606), and movable blocks (40) are slidably arranged in the two movable grooves (36). A threaded sleeve (41) is fixedly mounted on opposite sides of the two movable blocks (40); A threaded section is provided at the lower end of the rotating rod (8), 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).

10. The test device for engine cylinder wear according to claim 2, 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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