Clamping device for jack oil cylinder machining

Abstract

The utility model belongs to the technical field of jack machining, and particularly relates to a clamping device for jack oil cylinder machining, which comprises a worktable, a plurality of upright posts are arranged on the end face of the worktable, and a plurality of polishing plates are arranged on the end face of the worktable between two adjacent upright posts in a sliding manner. A plurality of supporting blocks are slidably arranged on the portion, between the multiple polishing plates, of the end face of the workbench, a plurality of driving rolling shafts are rotatably arranged on the arc-shaped end face of each supporting block, and a water spraying assembly is arranged on each supporting block. Through the structures such as the driving rolling shaft, the driving rolling shaft drives the oil cylinder to rotate, the situation that the torque between the clamping device and the oil cylinder is too large, and normal operation of the device is affected is effectively avoided, the upper portion, the middle portion and the lower portion of the inner wall of the oil cylinder are comprehensively cooled through the multiple water sprayers arranged on the driving rolling shaft, and the service life of the device is prolonged. And physical property change caused by overlarge temperature difference inside and outside the oil cylinder is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of jack processing technology, and in particular relates to a clamping device for processing jack cylinders. Background Technology

[0002] During the machining process of hydraulic jack cylinders, the outer wall of the cylinder generally needs to be sanded and then painted. During the sanding process, the cylinder needs to be firmly clamped. Conventional three-jaw chuck clamping can damage the clamping part, thereby affecting the accuracy of the hydraulic jack cylinder.

[0003] As disclosed in patent application CN202223435330.9, a clamping device for machining hydraulic jack cylinders includes a base box, a grinding assembly, a support assembly, a first drive assembly, and a second drive assembly. The grinding assembly is disposed on one side of the base box and is used to grind the outer wall of the cylinder. The second drive assembly is installed on one side of the base box. The support assembly is disposed at the output end of the second drive assembly and is controlled to rotate by the second drive assembly. The first drive assembly is disposed on one side of the base box and is used to drive the support assembly to swing, thereby supporting the inner wall of the cylinder. Compared with the prior art, this utility model embodiment can support and fix the hydraulic cylinder from the inside, ensuring comprehensive grinding of the outer wall of the cylinder. It eliminates the need for frequent adjustments to the clamping position of the cylinder, and has the advantages of high grinding efficiency and good grinding effect.

[0004] In the prior art, the inner wall of the cylinder is supported by a support component, and the drive component drives the support component and the cylinder to rotate, so that the side of the cylinder can be ground without changing the clamping position. However, there are still some shortcomings: First, when the drive component drives the support component and the cylinder to rotate in the prior art, the cylinder itself has a large weight, and the drive component rotates at a high speed during grinding. The torque generated between the two can cause the support component to deform, resulting in unstable clamping of the inside of the cylinder.

[0005] Secondly, the hydraulic cylinder generates a lot of heat during grinding. Conventional grinding can only cool the outer surface, while the heat generated by grinding will be conducted from the outer wall of the hydraulic cylinder to the inner wall and other parts. If the entire hydraulic cylinder is not cooled, it will affect the physical properties of the hydraulic cylinder material, thereby affecting the overall quality of the hydraulic cylinder. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this invention provides a clamping device for machining hydraulic cylinders in jacks. Through a structure including a driving roller, this invention ensures that when clamping the inner wall, the clamping device itself does not rotate; instead, the driving roller rotates the hydraulic cylinder. This effectively prevents excessive torque between the clamping device and the hydraulic cylinder from affecting the normal operation of the device, improving its stability and robustness. Multiple water sprayers mounted on the driving roller comprehensively cool the upper, middle, and lower parts of the hydraulic cylinder's inner wall, preventing excessive temperature differences between the inside and outside of the cylinder from altering its physical properties and effectively ensuring the stability of the hydraulic cylinder's physical performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for machining hydraulic cylinders of jacks, comprising a worktable, wherein multiple columns are provided on the end face of the worktable, characterized in that multiple grinding plates are slidably arranged between two adjacent columns on the end face of the worktable, multiple support blocks are slidably arranged between the grinding plates on the end face of the worktable, multiple drive rollers are rotatably arranged between each support block and a grinding plate on the arc-shaped end face of the support block, and each support block is provided with a water spray assembly.

[0008] Optionally, the water spray assembly includes a first water sprayer, a second water sprayer, and a third water sprayer, wherein the output end of the first water sprayer is located on the upper end face of the support block, the output end of the second water sprayer is located between two drive rollers, and the output end of the third water sprayer is located on the lower end face of the support block.

[0009] Optionally, a fixed connecting cylinder is provided at the center of the upper end face of the workbench, a first sliding rod is slidably provided at the axial center of the fixed connecting cylinder, a support plate is provided at the top of the first sliding rod, a plurality of second sliding rods are slidably provided on the outer side wall of the fixed connecting cylinder, a sliding sleeve is slidably provided on the outside of each second sliding rod, one end of the sliding sleeve is fixedly connected to the side wall of the support block, a connecting rod is rotatably provided on the upper end face of each sliding sleeve, and the other end of each connecting rod is rotatably connected to the side wall of the support plate.

[0010] Optionally, a first push cylinder is provided on the end face of the support plate, and a rotating top cover is rotatably provided on the output end of the first push cylinder, and a plurality of elastic protrusions are provided on the upper end face of the rotating top cover.

[0011] Optionally, each of the drive rollers rotates synchronously.

[0012] Optionally, a connecting plate is provided between every two columns, and a detachable sliding mounting plate is provided on one side of the grinding plate end face of each connecting plate. A second push cylinder is provided on one side of each connecting plate, and the output end of each second push cylinder passes through the connecting plate and is fixedly connected to one side of the sliding mounting plate.

[0013] Optionally, a wastewater collection tank is provided on the outer side of the fixed connecting cylinder on the end face of the workbench, and the wastewater collection tank has multiple through holes inside.

[0014] Optionally, the wastewater collection tank is provided with multiple placement plates, and each placement plate is rotatably equipped with a roller.

[0015] In summary, compared with existing technologies, the beneficial effects of this solution are as follows:

[0016] (1) This utility model uses a sliding sleeve, a support block, and a drive roller to make the clamping device not rotate when clamping the inner wall. Instead, the drive roller drives the oil cylinder to rotate. This effectively avoids excessive torque between the clamping device and the oil cylinder from affecting the normal operation of the device without affecting the external grinding of the oil cylinder. This improves the stability and firmness of the device. Moreover, the device can be adapted to clamp according to the size of different oil cylinders, thereby effectively improving the adaptability of the device.

[0017] (2) This utility model uses the first water sprayer, the second water sprayer and the third water sprayer set on the drive roller to comprehensively cool the upper, middle and lower parts of the inner wall of the oil cylinder, so as to avoid the heat generated by grinding the outer wall of the oil cylinder being conducted to the inner wall of the oil cylinder, thus avoiding the change of the physical properties of the oil cylinder caused by the excessive temperature difference between the inner and outer walls of the oil cylinder, so as to stabilize the physical properties of the oil cylinder after grinding and ensure the processing safety of the oil cylinder. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is the front view of the present utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 A 3D view of the support block component;

[0022] Figure 5 This is the main view of the support block part;

[0023] Figure 6 for Figure 5 A three-dimensional cross-sectional view at point AA;

[0024] Figure 7 for Figure 1 A magnified view of a section at point B in the middle;

[0025] Figure 8 for Figure 1 A magnified view of a section at point C.

[0026] In the diagram: workbench 10, column 11, connecting plate 12, fixed connecting cylinder 13, first slide rod 14, support plate 15, first push cylinder 16, rotating top cover 17, elastic protrusion 18, second slide rod 19, sliding sleeve 20, support block 21, drive roller 22, motor 23, belt 24, first water sprayer 25, second water sprayer 26, third water sprayer 27, grinding plate 28, sliding mounting plate 29, connecting rod 30, slider 31, wastewater collection tank 32, through hole 33, placement plate 34, roller 35, second push cylinder 36, third push cylinder 37, first pulley 38, second pulley 39. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Example 1:

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, a clamping device for machining hydraulic cylinders of jacks includes a worktable 10. Multiple columns 11 are provided on the end face of the worktable 10. Grinding plates 28 are slidably provided between two adjacent columns 11 on the end face of the worktable 10. Multiple support blocks 21 are slidably provided between the multiple grinding plates 28 on the end face of the worktable 10. Multiple drive rollers 22 are rotatably provided between each support block 21 and the grinding plate 28 on the arc-shaped end face of the support block 21. A water spraying assembly is provided on each support block 21.

[0030] Specifically, the grinding end face of the grinding plate 28 is arc-shaped, and multiple grinding plates 28 slide in fit, which can be adjusted according to the outer diameter of the oil cylinder to increase the adaptability of the device.

[0031] Multiple support blocks 21 drive multiple drive rollers 22 to support the inner wall of the oil cylinder. The rotation of the drive rollers 22 will drive the oil cylinder to rotate, thereby causing the grinding plate 28 to grind the outer wall of the oil cylinder.

[0032] Furthermore, such as Figure 1 and Figure 8As shown, a fixed connecting cylinder 13 is provided at the center of the upper end face of the workbench 10. A first sliding rod 14 is slidably provided at the axial center of the fixed connecting cylinder 13. A third push cylinder 37 is provided on the lower end face of the workbench 10. The output end of the third push cylinder 37 passes through the workbench 10 and is fixedly connected to the lower end face of the first sliding rod 14. A support plate 15 is provided on the top of the first sliding rod 14. Multiple second sliding rods 19 are slidably provided on the outer wall of the fixed connecting cylinder 13. A sliding sleeve 20 is slidably provided on the outside of each second sliding rod 19. One end of the sliding sleeve 20 is fixedly connected to the side wall of the support block 21. A connecting rod 30 is rotatably provided on the upper end face of each sliding sleeve 20. The other end of each connecting rod 30 is rotatably connected to the side wall of the support plate 15.

[0033] Specifically, the third push cylinder 37 is a hydraulic push cylinder, an electric push cylinder, etc., which is existing technology and will not be elaborated on in this solution. The output end of the third push cylinder 37 drives the first slide rod 14 to move vertically up and down. The first slide rod 14 drives the support plate 15 to move up and down. The up and down movement of the support plate 15 will drive the connecting rod 30 to rotate along the connection between the connecting rod 30 and the support plate 15. The rotation of the connecting rod 30 will drive the sliding sleeve 20 to move horizontally along the axis of the second slide rod 19. The horizontal movement of the sliding sleeve 20 will drive the support block 21 to move horizontally, so that multiple support blocks 21 move horizontally towards or away from the axis of the first slide rod 14 at the same time, thereby adjusting the support on the inner wall of the cylinder of different sizes and increasing the adaptability of the device.

[0034] Furthermore, such as Figure 1 and Figure 7 As shown, a first push cylinder 16 is provided on the end face of the support plate 15, and a rotating top cover 17 is rotatably provided on the output end of the first push cylinder 16. A plurality of elastic protrusions 18 are provided on the upper end face of the rotating top cover 17.

[0035] Specifically, the first push cylinder 16 is a hydraulic push cylinder, an electric push cylinder, etc., which is existing technology and will not be elaborated on in this solution. The first push cylinder 16 drives the rotating top cover 17 to move vertically up and down, so that the rotating top cover 17 can adjust the support length according to the oil cylinder with different inner cavity depths.

[0036] A bearing is provided between the top surface of the output end of the first push cylinder 16 and the rotating top cover 17. This is existing technology and will not be elaborated on in this solution. It is used to ensure the smooth rotation of the oil cylinder during grinding.

[0037] The elastic protrusion 18 is made of elastic particles. The setting of the elastic protrusion 18 can prevent the inner top surface of the oil cylinder from directly contacting the top surface of the rotating top cover 17, and can also absorb the vibration generated during the grinding of the outer wall of the oil cylinder. It not only protects the oil cylinder from being bumped, but also improves the grinding accuracy.

[0038] Furthermore, such as Figure 4As shown, a motor 23 is provided on one side of the sliding sleeve 20 on the side wall of the support block 21. A first pulley 38 is connected to the output end of the motor 23. A second pulley 39 is connected to the bottom of each drive roller 22 on one side of the first pulley 38. Multiple belts 24 are provided for transmission between the first pulley 32 and the multiple second pulleys 39.

[0039] Specifically, motor 23 is a waterproof motor, which is existing technology and will not be elaborated on in this solution. The output end of motor 23 drives multiple drive rollers 22 located on the same support block 21 to rotate, thereby driving the oil cylinder to rotate.

[0040] Furthermore, such as Figure 1 and Figure 4 As shown, the water spray assembly includes a first water sprayer 25, a second water sprayer 26 and a third water sprayer 27. The output end of the first water sprayer 25 is located on the upper end face of the support block 21, the output end of the second water sprayer 26 is located between the two drive rollers 22, and the output end of the third water sprayer 27 is located on the lower end face of the support block 21.

[0041] Specifically, the first water sprayer 25, the second water sprayer 26, and the third water sprayer 27 are all ordinary water sprayers, which are existing technologies and will not be elaborated on in this solution. The output end of the first water sprayer 25 is tilted upward, the output end of the second water sprayer 26 is horizontal, and the output end of the third water sprayer 27 is tilted downward, forming a comprehensive cooling effect on the upper, middle, and lower parts of the inner wall of the oil cylinder, thereby ensuring the uniform temperature of the entire oil cylinder.

[0042] Furthermore, such as Figure 1 As shown, a connecting plate 12 is provided between every two columns 11, and an external water sprayer is provided on each 12. A detachable sliding mounting plate 29 is provided on one side of each connecting plate 12 on the end face of the grinding plate 28. A second push cylinder 36 is provided on one side of each connecting plate 12. The output end of each second push cylinder 36 passes through the connecting plate 12 and is fixedly connected to one side of the sliding mounting plate 29.

[0043] Specifically, the second push cylinder 36 is a hydraulic push cylinder, an electric push cylinder, etc., which are existing technologies and will not be elaborated on in this solution. The output end of the second push cylinder 36 drives the sliding mounting plate 29 to move horizontally in a direction perpendicular to the axis of the first slide rod 14. The sliding mounting plate 29 drives the grinding plate 28 to move horizontally, thereby making adaptive adjustments according to the outer wall diameter of the oil cylinder.

[0044] The grinding plate 28 and the sliding mounting plate 29 are detachable, making it easy to replace the grinding plate 28 after it has worn out from long-term use.

[0045] The external water sprayer can cool the outer wall of the oil cylinder when the grinding plate 28 is grinding the outside of the oil cylinder.

[0046] First, adjust the device according to the inner and outer diameters and length of the oil cylinder to be ground. Start the first push cylinder 16. The output end of the first push cylinder 16 drives the rotating top cover 17 to move vertically up and down to match the depth inside the oil cylinder. Start the third push cylinder 37. The output end of the third push cylinder 37 drives the first slide rod 14 to move vertically up and down. The first slide rod 14 drives the support plate 15 to move up and down. The movement of the support plate 15 will drive the connecting rod 30 to rotate along the connection between the connecting rod 30 and the support plate 15, thereby driving the sliding sleeve 20 to move horizontally. The sliding sleeve 20 drives the support block 21 to move horizontally to match the inner diameter of the oil cylinder.

[0047] Then, the hydraulic cylinder is placed between multiple grinding plates 28 and multiple support blocks 21. The third push cylinder 37 is activated again, causing the multiple support blocks 21 to move horizontally towards the inner wall of the hydraulic cylinder. The support blocks 21 drive the drive rollers 22 to move horizontally until the multiple drive rollers 22 are in close contact with the inner wall of the hydraulic cylinder. Then, each second push cylinder 36 is activated. The output end of the second push cylinder 36 drives the sliding mounting plate 29 to move horizontally. The sliding mounting plate 29 drives the grinding plates 28 to move horizontally until the grinding arc surface of the sliding mounting plate 29 is in close contact with the outer wall of the hydraulic cylinder. Each motor 23 is activated. The output end of the motor 23 drives the multiple drive rollers 22 to rotate through multiple belts 24, thereby driving the hydraulic cylinder to rotate and grind. At the same time, the first water sprayer 25, the second water sprayer 26, and the third water sprayer 27 are activated to cool the inner and outer walls of the hydraulic cylinder.

[0048] Example 2:

[0049] Based on Example 1, further examples are made, such as... Figure 3 As shown, a wastewater collection tank 32 is provided on the outer side of the fixed connecting cylinder 13 on the end face of the workbench 10. The wastewater collection tank 32 has multiple through holes 33 inside, and multiple placement plates 34 are provided on the wastewater collection tank 32. Each placement plate 34 has a roller 35 rotatably installed inside it.

[0050] Specifically, the wastewater collection tank 32 and through hole 33 can collect the waste liquid generated during grinding and the wastewater generated after the water spray assembly cools the inner wall of the cylinder, reducing the accumulation of wastewater on the end face of the workbench 10. The placement plate 34 and roller 35 ensure that in some special cases, when the diameter of the cylinder is too long and the rotating top cover 17 cannot support the bottom of its inner wall, the port of the cylinder will not directly contact the wastewater collection tank 32, thus avoiding collision between the wastewater collection tank 32 and the cylinder port, which could lead to damage to the cylinder.

[0051] The roller 35 is made of elastic material, which can prevent impact on the end face of the hydraulic cylinder and absorb the vibration generated by the hydraulic cylinder during grinding, thereby increasing the grinding accuracy of the device.

[0052] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0053] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0054] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A clamping device for processing of a jack cylinder, comprising a workbench (10), a plurality of vertical columns (11) are arranged on the end face of the workbench (10), characterized in that, A plurality of polishing plates (28) are slidably arranged on the end face of the workbench (10) between two adjacent columns (11), a plurality of supporting blocks (21) are slidably arranged on the end face of the workbench (10) between the polishing plates (28), a plurality of driving rollers (22) are rotatably arranged on the arc-shaped end face of each supporting block (21), and a water spraying assembly is arranged on each supporting block (21).

2. The clamping device for processing of a jack cylinder according to claim 1, characterized in that, The water spraying assembly comprises a first water sprayer (25), a second water sprayer (26) and a third water sprayer (27), the output end of the first water sprayer (25) is located on the upper end face of the supporting block (21), the output end of the second water sprayer (26) is located between two driving rollers (22), and the output end of the third water sprayer (27) is located on the lower end face of the supporting block (21).

3. The clamping device for processing of a jack cylinder according to claim 1, characterized in that, A fixed connecting cylinder (13) is arranged at the center of the upper end face of the workbench (10), a first sliding rod (14) is slidably arranged at the axial position of the fixed connecting cylinder (13), a supporting plate (15) is arranged on the top of the first sliding rod (14), a plurality of second sliding rods (19) are slidably arranged on the outer side wall of the fixed connecting cylinder (13), a sliding sleeve (20) is slidably arranged on the outside of each second sliding rod (19), one end of the sliding sleeve (20) is fixedly connected with the side wall of the supporting block (21), a connecting rod (30) is rotatably arranged on the upper end face of each sliding sleeve (20), and the other end of each connecting rod (30) is rotatably connected with the side wall of the supporting plate (15).

4. The clamping device for machining a jack cylinder according to claim 3, characterized in that A first push cylinder (16) is arranged on the end face of the supporting plate (15), a rotating top cover (17) is rotatably arranged at the output end of the first push cylinder (16), and a plurality of elastic protrusions (18) are arranged on the upper end face of the rotating top cover (17).

5. The clamping device for processing of a jack cylinder according to claim 1, characterized in that, Each driving roller (22) rotates synchronously.

6. The clamping device for machining of a jack cylinder according to claim 1, characterized in that A connecting plate (12) is arranged between every two columns (11), a detachable sliding mounting plate (29) is arranged on the end face of the polishing plate (28) on one side of each connecting plate (12), a second push cylinder (36) is arranged on one side of each connecting plate (12), and the output end of each second push cylinder (36) is fixedly connected with one side of the sliding mounting plate (29) through the connecting plate (12).

7. The clamping device for machining a jack cylinder according to claim 3, characterized in that A wastewater collecting groove (32) is arranged on the end face of the workbench (10) on the outer side of the fixed connecting cylinder (13), and a plurality of through holes (33) are arranged in the wastewater collecting groove (32).

8. The clamping device for machining a jack cylinder according to claim 7, characterized in that A plurality of placing plates (34) are arranged on the wastewater collecting groove (32), and a roller (35) is rotatably arranged in each placing plate (34).

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