Auxiliary device for polishing outer surface of plunger of mining engineering oil cylinder
By designing an auxiliary device for grinding the outer surface of the hydraulic cylinder piston in mining engineering, the problem of local over-grinding or unevenness caused by hand-held grinding was solved, achieving uniform flatness and environmental cleanliness of the outer surface of the hydraulic cylinder piston, and improving the repair effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-10
AI Technical Summary
When repairing the outer surface of the piston of a mining hydraulic cylinder, hand-held grinders can easily lead to local over-grinding or unevenness, affecting surface quality and curvature. Furthermore, traditional methods are difficult to guarantee uniformity and flatness.
Design an auxiliary device for grinding the outer surface of a hydraulic cylinder piston in mining engineering, including a base plate, a fixed plate, a support wheel, a moving plate, and an axial drive component. The support wheel is in close contact with the outer surface of the hydraulic cylinder piston to ensure the curvature consistency during the grinding process. The tilt adjustment component and the axial drive component are used to achieve layer-by-layer grinding of the weld points, and the dust suction duct is used to clean the environment.
It effectively avoids over-polishing or uneven grinding, ensuring the uniformity and smoothness of the repair on the outer surface of the hydraulic cylinder piston, improving the repair effect, and maintaining a clean working environment through the dust suction duct to reduce dust hazards.
Smart Images
Figure CN223981600U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of grinding auxiliary devices, and in particular to a grinding auxiliary device for the outer surface of a hydraulic cylinder piston in mining engineering. Background Technology
[0002] Mining face equipment is typically equipped with large-diameter mining hydraulic cylinders. These cylinders often face harsh conditions in the mining environment, such as humidity, high sulfur content, high salinity, and dust. Prolonged exposure to such conditions can cause corrosion, impacts, scratches, and other defects on the outer surface of the cylinder's piston, leading to leaks and a series of safety hazards.
[0003] During the repair of hydraulic cylinder pistons, the disassembled pistons are first classified. Pistons with defects such as corrosion or dents require surface stripping. To create favorable processing conditions for subsequent chrome plating, workers fill in the pits with welding, then manually grind and polish them using a grinder, and finally complete the final surface treatment using a belt sander to ensure the piston surface smoothness and curvature meet requirements.
[0004] However, when repairing and polishing the outer surface of the cylinder piston, workers need to use a hand-held grinder to polish the surface of the weld points. This often leads to excessive polishing around smaller weld points, resulting in local surface depressions, while larger weld points are difficult to ensure surface flatness and are prone to unevenness, thus affecting the surface curvature of the piston itself. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides an auxiliary device for grinding the outer surface of the piston of a mining engineering hydraulic cylinder. The technical solution of this utility model is as follows:
[0006] A grinding auxiliary device for the outer surface of a hydraulic cylinder piston in mining applications includes a base plate and a fixed plate for mounting a grinding machine. Side plates are vertically fixed to both sides of the base plate, and support wheels are rotatably connected to the lower front and rear ends of the side plates. A movable plate is slidably connected to the upper surface of the base plate, and an axial drive component for driving the movable plate to slide is connected below the base plate. The fixed plate is hinged to the front side of the upper surface of the movable plate, and an angle adjustment component for adjusting the tilt angle of the fixed plate is connected above the movable plate. The grinding machine is detachably mounted above the fixed plate, and a dust suction duct is detachably mounted on one side of the fixed plate.
[0007] Optionally, a square sliding groove is provided through the center of the upper surface of the base plate, and two sets of sliding blocks are symmetrically fixed on the left and right sides of the upper surface of the base plate, and the movable plate is slidably connected inside the two sets of sliding blocks.
[0008] Optionally, ear plates are fixedly connected to both the front and rear sides of the lower surface of the base plate. The two sets of ear plates are located on the front and rear sides of the square slide groove, respectively. The axial drive component includes a lead screw and a nut seat. The front end of the lead screw is rotatably connected to the ear plate located on the front side. The rear end of the lead screw rotatably passes through the ear plate located on the rear side and extends to the rear of the ear plate. The nut seat is fixedly connected to the lower surface of the moving plate. The nut seat is threaded on the outside of the lead screw. An axial adjustment handwheel is fixedly sleeved on the rear end of the lead screw.
[0009] Optionally, a handle groove is provided through one side of the side plate.
[0010] Optionally, two sets of inverted L-shaped seats are symmetrically fixed on the left and right sides of the upper surface of the movable plate. A fixed seat one is fixedly connected to the front side of the upper surface of the movable plate, and the fixed seat one is located between the two sets of inverted L-shaped seats. A fixed seat two is fixedly connected to the rear side of the upper surface of the movable plate, and the fixed seat two is located between the two sets of inverted L-shaped seats. The tilt adjustment component includes a lead screw two and a nut seat two. The front end of the lead screw two is rotatably connected to the fixed seat one. The rear end of the lead screw two rotatably passes through the fixed seat two and extends to the rear of the fixed seat two. The nut seat two is threaded on the outside of the lead screw two. The nut seat two is slidably connected to the inside of the two sets of inverted L-shaped seats. A support rod is rotatably connected to the upper end of the nut seat two through a pin. The end of the support rod away from the nut seat two is rotatably connected to the lower surface of the fixed plate through a pin. A tilt adjustment handwheel is fixedly sleeved on the rear end of the lead screw two.
[0011] Optionally, a fixed clamping seat is fixedly connected to the middle of the upper surface of the fixed plate, and a movable clamping seat is detachably connected above the fixed clamping seat by bolts. The body of the grinder is fixedly clamped between the fixed clamping seat and the movable clamping seat, and a support seat for supporting the front end of the grinder is fixedly connected to the front side of the upper surface of the fixed plate.
[0012] Optionally, both the support base and the fixed clamping base are fixedly connected to one side with a buckle for installing a vacuum suction tube.
[0013] All of the above optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.
[0014] The beneficial effects of this utility model through the above solution are as follows:
[0015] 1. This utility model replaces the traditional hand-held operation method with a grinding auxiliary device, effectively providing stable support for the grinding machine. This auxiliary device ensures the grinding machine remains stable throughout the grinding process, avoiding various problems caused by operator instability. With this device, the grinding head maintains a certain distance from the outer surface of the hydraulic cylinder piston during grinding, preventing over-grinding or uneven surfaces that could affect surface quality. This ensures the uniformity and smoothness of the repaired outer surface of the hydraulic cylinder piston, thereby improving the repair effect.
[0016] 2. In this invention, the grinding machine indirectly achieves circumferential reciprocating motion along the outer surface of the hydraulic cylinder piston through four sets of support wheels, effectively maintaining the surface curvature of the hydraulic cylinder piston after grinding. Secondly, the operator can also drive the moving plate and grinding machine axially along the outer surface of the hydraulic cylinder piston using an axial drive component, thereby completing the grinding of the axial weld points on the outer surface of the hydraulic cylinder piston. Furthermore, the fixing plate used to fix the grinding machine can be adjusted in tilt angle according to actual needs, thereby indirectly changing the tilt angle of the grinding machine. By gradually adjusting this angle, the weld points can be ground layer by layer, ensuring that the grinding depth and surface quality of each layer meet the requirements, avoiding excessive wear or uneven grinding during the grinding process.
[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0018] Figure 1 A schematic diagram of the structure of the auxiliary device for grinding the outer surface of the hydraulic cylinder piston in mining engineering provided by this utility model, which is used in conjunction with the hydraulic cylinder piston;
[0019] Figure 2 Schematic diagram of the overall appearance structure of the auxiliary device for grinding the outer surface of the hydraulic cylinder piston in mining engineering provided by this utility model. Figure One ;
[0020] Figure 3 Schematic diagram of the overall appearance structure of the auxiliary device for grinding the outer surface of the hydraulic cylinder piston in mining engineering provided by this utility model. Figure Two ;
[0021] Figure 4 Right sectional view of the auxiliary device for grinding the outer surface of the piston of a mining engineering hydraulic cylinder provided by this utility model;
[0022] Figure 5 An exploded structural diagram of the auxiliary device for grinding the outer surface of the piston of a mining engineering hydraulic cylinder provided by this utility model;
[0023] Figure 6 This is an exploded structural diagram of the movable plate, fixed base one, and fixed base two in this utility model;
[0024] Figure 7 This is a schematic diagram of the structure of the fixed plate, the grinder and the dust suction tube in this utility model.
[0025] The following are the labeling elements in the diagram: 1. Base plate; 11. Square slide groove; 12. Slide seat; 13. Ear plate; 2. Side plate; 21. Handle groove; 3. Support wheel; 4. Moving plate; 41. Inverted L-shaped seat; 42. Fixed seat one; 43. Fixed seat two; 5. Axial drive component; 51. Lead screw one; 52. Axial adjustment handwheel; 53. Nut seat one; 6. Fixed plate; 61. Fixed clamping seat; 62. Movable clamping seat; 63. Support seat; 64. Buckle; 7. Tilt adjustment component; 71. Lead screw two; 711. Tilt adjustment handwheel; 72. Nut seat two; 73. Support rod; 8. Grinding machine; 9. Dust suction duct. Detailed Implementation
[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0027] Please see Figures 1-7 This utility model provides an auxiliary device for grinding the outer surface of a hydraulic cylinder piston in mining engineering. It includes a base plate 1 and a fixed plate 6 for mounting a grinder 8. Side plates 2 are vertically fixed to both sides of the base plate 1. Support wheels 3 are rotatably connected to the lower ends of the front and rear sides of the side plates 2. A movable plate 4 is slidably connected to the upper surface of the base plate 1. An axial drive component 5 for driving the movable plate 4 to slide is connected to the lower part of the base plate 1. The fixed plate 6 is hinged to the front side of the upper surface of the movable plate 4. An angle adjustment component 7 for adjusting the angle of the fixed plate 6 is connected to the upper part of the movable plate 4. The grinder 8 is detachably mounted on the upper part of the fixed plate 6. A dust suction pipe 9 is detachably mounted on one side of the fixed plate 6. The dust suction pipe 9 is connected to a dust suction device for sucking up grinding dust.
[0028] In this invention, the grinding machine 8 indirectly achieves circumferential reciprocating motion along the outer surface of the cylinder piston through four sets of support wheels 3. During the motion, the operator can make the four sets of support wheels 3 fit tightly against the outer surface of the cylinder piston by manipulating the side plate 2. At this time, the motion curve of the support wheels 3 will be concentric with the outer circle of the cylinder piston, thereby ensuring the consistency of the curve during the grinding process and effectively maintaining the surface curvature of the cylinder piston after grinding.
[0029] Secondly, the staff can also drive the moving plate 4 and the grinding machine 8 to move axially along the outer surface of the cylinder piston through the axial drive component 5, thereby completing the grinding of the axial weld points on the outer surface of the cylinder piston.
[0030] Furthermore, to better adapt to different repair needs, the fixing plate 6 used to fix the grinder 8 can be adjusted in tilt angle according to actual requirements, thereby indirectly changing the tilt angle of the grinder 8 and effectively controlling the distance between the grinding head and the hydraulic cylinder piston. By gradually adjusting this angle, the weld joint can be ground layer by layer, ensuring that the grinding depth and surface quality of each layer meet the requirements, and avoiding excessive wear or uneven grinding during the grinding process.
[0031] Finally, during the polishing process, the external vacuuming device connected to the dust suction duct 9 can promptly remove the dust and particles generated during polishing, which not only keeps the working environment clean but also reduces the harm of dust to operators.
[0032] Furthermore, a square groove 11 is provided through the center of the upper surface of the base plate 1, and two sets of slide blocks 12 are symmetrically fixed on the left and right sides of the upper surface of the base plate 1. The movable plate 4 is slidably connected inside the two sets of slide blocks 12.
[0033] Specifically, when the axial drive 5 drives the movable plate 4 to move, the movable plate 4 moves within the two sets of slide blocks 12. The two sets of slide blocks 12 not only serve as guides to ensure that the movable plate 4 remains stable and smooth during movement, but also have a limiting function to prevent the movable plate 4 from deviating from the predetermined path or from undergoing unnecessary lateral displacement.
[0034] Furthermore, ear plates 13 are fixedly connected to both the front and rear sides of the lower surface of the base plate 1. The two sets of ear plates 13 are located on the front and rear sides of the square slide groove 11, respectively. The axial drive component 5 includes a lead screw 51 and a nut seat 53. The front end of the lead screw 51 is rotatably connected to the ear plate 13 located on the front side. The rear end of the lead screw 51 rotatably passes through the ear plate 13 located on the rear side and extends to the rear of the ear plate 13. The nut seat 53 is fixedly connected to the lower surface of the moving plate 4. The nut seat 53 is threaded on the outside of the lead screw 51. An axial adjustment handwheel 52 is fixedly sleeved on the rear end of the lead screw 51.
[0035] Specifically, when the grinding machine 8 needs to be moved axially for grinding, the axial adjustment handwheel 52 can be manually rotated. The axial adjustment handwheel 52 drives the lead screw 51 to rotate, thereby causing the nut seat 53 to slide along the square slide groove 11. The nut seat 53 indirectly drives the grinding machine 8 to move axially along the outer surface of the cylinder piston through the moving plate 4. In addition, in practical applications, to improve work efficiency and automation, a speed-regulating motor can be used instead of the axial adjustment handwheel 52. The speed-regulating motor drives the lead screw 51 to rotate, thereby achieving automated axial adjustment of the moving plate 4.
[0036] Furthermore, a handle groove 21 is provided through one side of the side panel 2.
[0037] Specifically, when using this polishing auxiliary device, the operator can conveniently manipulate and control the movement and position adjustment of the device with the help of the handle groove 21.
[0038] Furthermore, two sets of inverted L-shaped seats 41 are symmetrically fixed on the left and right sides of the upper surface of the movable plate 4. Fixed seat 1 42 and fixed seat 2 43 are fixedly connected to the front and rear sides of the upper surface of the movable plate 4, respectively. Fixed seat 1 42 and fixed seat 2 43 are both located between the two sets of inverted L-shaped seats 41. The tilt adjustment component 7 includes a lead screw 2 71 and a nut seat 2 72. The front end of the lead screw 2 71 is rotatably connected to the fixed seat 1 42. The rear end of the lead screw 2 71 rotatably passes through the fixed seat 2 43 and extends to the rear of the fixed seat 2 43. The nut seat 2 72 is threaded on the outside of the lead screw 2 71. The nut seat 2 72 is slidably connected to the inside of the two sets of inverted L-shaped seats 41. The upper end of the nut seat 2 72 is rotatably connected to a support rod 73 through a pin. The end of the support rod 73 away from the nut seat 2 72 is rotatably connected to the lower surface of the fixed plate 6 through a pin. The rear end of the lead screw 2 71 is fixedly fitted with a tilt adjustment handwheel 711.
[0039] Specifically, when it is necessary to adjust the distance between the grinding head and the outer surface of the hydraulic cylinder piston, the tilt adjustment handwheel 711 can be manually rotated. The tilt adjustment handwheel 711 drives the lead screw 71 to rotate, thereby causing the nut seat 72 to slide axially within the two sets of inverted L-shaped seats 41. Since the fixed plate 6 and the front side of the moving plate 4 are hinged, the axial sliding of the nut seat 72 will cause a change in the included angle between the fixed plate 6 and the support rod 73. As the included angle is adjusted, the tilt angle of the fixed plate 6 will also change accordingly, thus achieving precise tilt adjustment and allowing the grinding head to maintain a suitable distance and angle with the outer surface of the hydraulic cylinder piston as needed. Furthermore, in practical applications, to improve operating efficiency and accuracy, a speed-regulating motor can be used instead of the tilt adjustment handwheel 711. The speed-regulating motor precisely controls the rotation of the lead screw 71, allowing the nut seat 72 to slide smoothly, thereby achieving automated tilt adjustment of the fixed plate 6.
[0040] Furthermore, a fixed clamping seat 61 is fixedly connected to the middle of the upper surface of the fixed plate 6, and a movable clamping seat 62 is detachably connected above the fixed clamping seat 61 by bolts. The body of the grinder 8 is fixedly clamped between the fixed clamping seat 61 and the movable clamping seat 62. A support seat 63 for supporting the front end of the grinder 8 is fixedly connected to the front side of the upper surface of the fixed plate 6.
[0041] Specifically, the grinder 8 is mounted on the fixed plate 6 with a detachable structure, facilitating subsequent maintenance, repair, and replacement. Furthermore, its modular design allows for the installation of different grinding tools.
[0042] Furthermore, both the support base 63 and the fixed clamp base 61 are fixedly connected to one side with a buckle 64 for installing the vacuum suction tube 9.
[0043] Specifically, the clip 64 is designed for installing the vacuum suction pipe 9, ensuring a secure connection between the vacuum suction pipe 9 and the fixing plate 6, preventing loosening or detachment during use. The external vacuum cleaner connected to the vacuum suction pipe 9 can promptly remove dust and debris generated during the polishing process, maintaining a clean and safe working environment. Furthermore, the vacuum suction pipe 9 features a detachable structure installed on one side of the fixing plate 6, allowing for easy installation or removal by staff as needed.
[0044] Working Principle: First, when using this device, the grinder 8 is fixedly clamped between the movable clamping seat 62 and the fixed clamping seat 61. Then, the suction pipe 9 is connected to an external vacuum cleaner, and the suction pipe 9 is installed inside the buckle 64. Second, the tilt angle of the fixed plate 6 and the grinder 8 is adjusted using the tilt adjustment component 7 to ensure an appropriate distance between the grinding head of the grinder 8 and the outer surface of the cylinder piston. Third, the grinder 8 is started to grind and repair the outer surface of the cylinder piston. When it is necessary to drive the grinder 8 to perform circumferential grinding on the outer surface of the cylinder piston, the operator can manipulate the base plate 1 through the handle groove 21. With the assistance of the four sets of support wheels 3, the base plate 1 and the grinder 8 move axially along the outer surface of the cylinder piston. Fourth, when it is necessary to drive the grinder 8 to perform axial grinding on the outer surface of the cylinder piston, the operator can fix the relative position of the base plate 1 and the cylinder piston through the handle groove 21. Next, the moving plate 4 and the grinding machine 8 are driven by the axial drive component 5 to move along the axial direction of the cylinder piston, thereby grinding and repairing the axial outer surface of the cylinder piston.
[0045] It should be noted that, in addition to the handheld grinding method mentioned in this article, in actual operation, to ensure the curvature accuracy of the cylinder piston's outer surface, the cylinder piston will also be mounted on a special lathe for grinding. In comparison, this device offers significantly greater convenience, is easier to operate, and is safer.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A mining engineering oil cylinder ram outer surface polishing auxiliary device, characterized in that: Including base plate (1) and be used to install the fixed plate (6) of polisher (8), both sides of the base plate (1) are vertically fixedly connected with side plate (2), the front and rear sides of the side plate (2) are rotatably connected with support wheel (3), the upper surface of the base plate (1) is slidably connected with moving plate (4), the lower side of the base plate (1) is connected with axial drive (5) for driving moving plate (4) to slide, the fixed plate (6) is hingedly connected on the upper surface front side of moving plate (4), the upper side of moving plate (4) is connected with inclination angle adjusting part (7) for adjusting the inclination angle of fixed plate (6), the polisher (8) is detachably installed on the upper side of fixed plate (6), one side of the fixed plate (6) is detachably installed with dust extraction duct (9).
2. The auxiliary device for grinding the outer surface of a mine engineering oil cylinder piston rod according to claim 1, characterized in that, The upper surface center of the base plate (1) is provided with a square sliding groove (11), and the upper surface of the base plate (1) is symmetrically provided with two groups of sliding seats (12) on the left and right sides; the moving plate (4) is slidably connected inside the two groups of sliding seats (12).
3. The auxiliary device for grinding the outer surface of a mine engineering oil cylinder piston rod according to claim 2, characterized in that, The lower surface of the base plate (1) is fixedly connected with ear plate (13) on the front and rear sides, and the two groups of ear plates (13) are respectively located on the front and rear sides of the square sliding groove (11); the axial drive (5) comprises a lead screw (51) and a nut seat (53); the front end of the lead screw (51) is rotatably connected between the ear plate (13) on the front side; the rear end of the lead screw (51) is rotatably penetrated through the ear plate (13) on the rear side and extends to the rear of the ear plate (13) on the rear side; the nut seat (53) is fixedly connected to the lower surface of the moving plate (4); the nut seat (53) is threadedly sleeved on the outer side of the lead screw (51); and the rear end of the lead screw (51) is fixedly sleeved with an axial adjusting hand wheel (52).
4. The mine engineering oil cylinder ram outer surface polishing auxiliary device according to claim 1, characterized in that, A handle groove (21) is formed through one side of the side plate (2).
5. The mining engineering oil cylinder ram outer surface polishing auxiliary device according to claim 1, characterized in that, The upper surface of the moving plate (4) is symmetrically provided with two groups of inverted L-shaped seats (41) on the left and right sides; the upper surface of the moving plate (4) is fixedly connected with a fixed seat (42) on the front side and a fixed seat (43) on the rear side, and the fixed seat (42) and the fixed seat (43) are located between the two groups of inverted L-shaped seats (41); the inclination angle adjusting part (7) comprises a lead screw (71) and a nut seat (72); the front end of the lead screw (71) is rotatably connected with the fixed seat (42); the rear end of the lead screw (71) is rotatably penetrated through the fixed seat (43) and extends to the rear of the fixed seat (43); the nut seat (72) is threadedly sleeved on the outer side of the lead screw (71); the nut seat (72) is slidably connected inside the two groups of inverted L-shaped seats (41); the upper end of the nut seat (72) is rotatably connected with a support rod (73) through a pin shaft; one end of the support rod (73) away from the nut seat (72) is rotatably connected with the lower surface of the fixed plate (6) through a pin shaft; and the rear end of the lead screw (71) is fixedly sleeved with an inclination angle adjusting hand wheel (711).
6. The mining engineering oil cylinder ram outer surface polishing auxiliary device according to claim 1, characterized in that, The upper surface of the fixed plate (6) is fixedly connected with a fixed clamping seat (61), the upper side of the fixed clamping seat (61) is detachably connected with a movable clamping seat (62) through bolts, the body of the sander (8) is clamped between the fixed clamping seat (61) and the movable clamping seat (62), and the upper surface of the fixed plate (6) is fixedly connected with a supporting seat (63) for supporting the front end of the sander (8).
7. The mine engineering oil cylinder ram outer surface polishing auxiliary device according to claim 6, characterized in that, The supporting seat (63) and one side of the fixed clamping seat (61) are fixedly connected with buckles (64) for installing dust suction pipes (9).