Polishing device for power cable protection pipe production

Abstract

The invention discloses a polishing device for power cable protection pipe production, and belongs to the field of protection pipe production, the polishing device comprises a base, the upper end of the base is fixedly connected with a fixing plate, the middle part of the fixing plate is provided with a circular through hole, and the middle part of the base is provided with a slag falling hole; and the upper end of the base is fixedly connected with a mounting plate. The hydraulic telescopic rod drives the conical block to be matched with the inclined face of the positioning block, self-adaptive centering clamping of power cable protection pipes with different diameters is achieved, the coaxiality of the protection pipes in the grinding process is ensured, and the grinding precision is effectively improved; meanwhile, the elastic reset design of the spring A and the spring B is matched, full-process automation of clamping, feeding and resetting is achieved, manual repeated adjustment is not needed, the clamping and part taking efficiency is greatly improved, part impact is avoided through the buffering effect of the springs, the service life of the device is prolonged, the structure is simple and reliable, adaptability is high, and the production cost is low. And a stable positioning foundation is provided for subsequent polishing operation.

Description

Technical Field

[0001] This invention belongs to the field of protective tube production, specifically relating to a grinding device for the production of power cable protective tubes. Background Technology

[0002] Power cable protection pipes are important facilities to ensure the safe operation of underground power cables, and the smoothness of their surface directly affects the installation efficiency and protection effect.

[0003] Chinese Patent CN120772872A discloses a grinding device for producing power cable protection pipes, including an operating table. A grinding bracket is fixedly connected to the upper surface of the operating table, and a grinding machine is installed on the grinding bracket. The grinding machine is used to grind the surface of the protection pipe. Linear motors are fixedly connected to both sides of the upper surface of the operating table. A moving base is fixedly connected to the moving end of the linear motor. A moving bracket is fixedly connected to the upper surface of the moving base. A fixing hoop is fixedly connected to the upper surface of the moving bracket. The fixing hoop is used to fix the front end of the protection pipe and drive the protection pipe to move.

[0004] The existing technology has the following problems: the above-mentioned device only relies on the fixing hoop to drive the protective tube to move, without an adaptive centering structure, and has poor adaptability to protective tubes of different diameters. It is necessary to replace the fixing hoop with one of the corresponding specifications, and its versatility is weak. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a grinding device for the production of power cable protection pipes, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides a grinding device for the production of power cable protection pipes, including a base, a fixing plate fixedly connected to the upper end of the base, a circular opening in the middle of the fixing plate, and a slag discharge port in the middle of the base. A mounting plate is fixedly connected to the upper end of the base. A hydraulic telescopic rod is fixedly connected to the outer wall of the mounting plate. A conical block is fixedly connected to the output end of the hydraulic telescopic rod. A sliding rod slides through the lower side of the fixed plate. A connecting block is fixedly connected to one end of the sliding rod. A rectangular frame is fixedly connected to the upper end of the connecting block. A moving rod slides through the middle of the four faces of the rectangular frame. A positioning block is fixedly connected to the end of the moving rod located inside the rectangular frame. An elastic element for providing restoring force to the sliding rod is assembled at the upper end of the base.

[0007] Preferably, the elastic element includes a fixed block, a ring, and a spring A. The fixed block is fixedly connected to the upper end of the base, the end of the slide rod away from the connecting block slides through the middle of the fixed block, the ring is fixedly sleeved on the outer wall of the slide rod, and the spring A is fixedly connected between the fixed block and the ring.

[0008] Preferably, the outer periphery of the end of the positioning block near the fixing plate is arc-shaped, and a matching groove is provided on the inner side of the end of the positioning block near the conical block.

[0009] Preferably, a spring B is fixedly connected to the inner wall of the rectangular frame, and the other end of the spring B is fixedly connected to the positioning block.

[0010] Preferably, the outer wall of the fixed plate is equipped with a grinding assembly, which includes a rotating cylinder, a spiral groove, a sliding shaft, a gear, a gear ring, a connecting plate, an electric telescopic rod, a C-shaped plate, a motor, and a grinding roller. The rotating cylinder is rotatably connected to the outer wall of the fixed plate. The spiral groove is formed on the outer wall of one side of the sliding rod. The sliding shaft is fixedly connected to the inner wall of the rotating cylinder. The gear is fixedly sleeved on the outer wall of the rotating cylinder. The gear ring is rotatably connected to the outer wall of the fixed plate. The connecting plate is fixedly connected to the inner side of the gear ring. The electric telescopic rod is fixedly connected to the bottom of the connecting plate. The C-shaped plate is fixedly connected to the output end of the electric telescopic rod. The motor is fixedly connected to the outer wall of the C-shaped plate. The grinding roller is rotatably connected to the inner side of the C-shaped plate, and the output end of the motor is fixedly connected to one end of the grinding roller.

[0011] Preferably, the slide rod slides through the middle of the rotating drum, and the slide shaft is slidably connected to the inner wall of the spiral groove.

[0012] Preferably, the center of the gear ring coincides with the center of the circular opening, and the gear is located on the side of the gear ring and meshes with it.

[0013] Preferably, a dust removal component is fixedly connected to the outer wall of the fixed plate. The dust removal component includes a mounting block, a connecting rod that slides through the middle of the mounting block, a movable plate that is fixedly connected to the bottom end of the connecting rod, a movable rod that is fixedly connected to the upper end of the connecting rod, a mounting shaft that is fixedly connected to the top of the fixed plate, a swing plate that is fixedly sleeved on the outer wall of the mounting shaft, a small fan that is fixedly connected to the lower end of the swing plate, a groove that is opened on the inner side of the swing plate, a cam plate that is fixedly sleeved on the outer wall of the rotating drum, and the top of the movable rod that is slidably connected to the inside of the groove.

[0014] Preferably, a spring C is fixedly connected to the inner side of the mounting block, and the other end of the spring C is fixedly connected to the movable plate, which is located on the side of the cam plate and engages with it.

[0015] The advantages of this application are: (1) This application achieves adaptive centering clamping of power cable protection pipes of different diameters by driving the conical block and the inclined surface of the positioning block through the hydraulic telescopic rod, ensuring the coaxiality of the protection pipe during the grinding process and effectively improving the grinding accuracy; at the same time, with the elastic reset design of spring A and spring B, the entire process of clamping, feeding and reset is automated, eliminating the need for repeated manual adjustments, greatly improving the clamping and picking efficiency, and the buffering effect of the spring avoids the impact of the parts, extending the service life of the device. The structure is simple and reliable, with strong adaptability, providing a stable positioning basis for subsequent grinding operations.

[0016] (2) This application converts the linear feed motion of the slide rod into the rotational motion of the drum without additional power by cooperating with the spiral groove on the outer wall of the slide rod and the rotary shaft. Then, the grinding roller is driven by the gear and gear ring to make a circular motion, which realizes the all-round uniform grinding of the outer wall of the protective tube, and completely solves the problems of grinding dead corners and uneven thickness in traditional grinding. At the same time, the grinding depth can be flexibly adjusted by the electric telescopic rod to adapt to different process requirements, thereby improving the grinding quality and production efficiency.

[0017] (3) This application uses a rotating drum to drive a cam plate to periodically drive a movable plate. With the reset function of spring C, the rotational motion of the rotating drum is converted into the reciprocating swing of the swing plate. This realizes the all-round dynamic blowing of the grinding area by a small fan. The dust and debris generated during grinding can be efficiently blown into the slag outlet for centralized collection. This solves the problems of grinding dust spreading, polluting the environment and affecting the grinding quality. It not only protects the health of the operators, but also avoids dust adhesion affecting the coating adhesion, thus comprehensively improving the environmental protection and processing quality of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is the invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 5 This is the invention Figure 4 Enlarged structural diagram at point B; Figure 6 This is the invention Figure 1 Enlarged structural diagram at point C; Figure 7 This is the invention Figure 1 Enlarged structural diagram at point D; Figure 8 This is the invention Figure 4Enlarged structural diagram at point E in the middle.

[0019] Explanation of key figure labels: 1. Base; 2. Fixing plate; 3. Slag discharge port; 41. Mounting plate; 42. Hydraulic telescopic rod; 43. Conical block; 44. Sliding rod; 45. Connecting block; 46. Rectangular frame; 47. Moving rod; 48. Positioning block; 49. Fixing block; 410. Ring; 411. Spring A; 412. Spring B; 5. Grinding assembly; 51. Rotary drum; 52. Spiral groove; 53. Sliding shaft; 54. Gear; 55. Gear ring; 56. Connecting plate; 57. Electric telescopic rod; 58. C-shaped plate; 59. Motor; 510. Grinding roller; 6. Dust removal assembly; 61. Mounting block; 62. Connecting rod; 63. Movable plate; 64. Movable rod; 65. Mounting shaft; 66. Small fan; 67. Slide groove; 68. Spring C; 69. Swing plate; 610. Cam plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] Example 1, as Figures 1-8 As shown, a grinding device for the production of power cable protection pipes includes a base 1, a fixing plate 2 fixedly connected to the upper end of the base 1, a circular opening in the middle of the fixing plate 2, and a slag discharge port 3 in the middle of the base 1. A mounting plate 41 is fixedly connected to the upper end of the base 1. A hydraulic telescopic rod 42 is fixedly connected to the outer wall of the mounting plate 41. A conical block 43 is fixedly connected to the output end of the hydraulic telescopic rod 42. A sliding rod 44 slides through the lower side of the fixed plate 2. A connecting block 45 is fixedly connected to one end of the sliding rod 44. A rectangular frame 46 is fixedly connected to the upper end of the connecting block 45. A moving rod 47 slides through the middle of the four faces of the rectangular frame 46. A positioning block 48 is fixedly connected to one end of the moving rod 47 located inside the rectangular frame 46. An elastic element for providing restoring force to the sliding rod 44 is assembled at the upper end of the base 1.

[0022] The elastic element includes a fixed block 49, a ring 410, and a spring A411. The fixed block 49 is fixedly connected to the upper end of the base 1. The end of the slide rod 44 away from the connecting block 45 slides through the middle of the fixed block 49. The ring 410 is fixedly sleeved on the outer wall of the slide rod 44. The spring A411 is fixedly connected between the fixed block 49 and the ring 410. The elastic element allows the slide rod 44 to move away from the mounting plate 41 by the elastic restoring force of the spring A411 when the hydraulic telescopic rod 42 is retracted, thereby resetting the rectangular frame 46 and the positioning block 48. This prepares for the next positioning and clamping of the power cable protection pipe, ensuring the continuity and convenience of the device operation. At the same time, the buffering effect of the spring A411 can also prevent excessive impact when the slide rod 44 is reset, effectively extending the service life of each component of the device and improving the stability of the overall structure.

[0023] The outer periphery of the positioning block 48 near the fixing plate 2 is arc-shaped, and the inner side of the positioning block 48 near the conical block 43 has a matching groove. This design allows the arc-shaped periphery to guide the power cable protection tube as it passes through the circular opening of the fixing plate 2 and is fitted around the positioning block 48, preventing the outer wall of the tube from scraping or getting stuck with the edge of the positioning block 48, thus improving the convenience of clamping operations. The groove on the inner side of the positioning block 48 is adapted to the conical structure of the conical block 43. When the hydraulic telescopic rod 42 pushes the conical block 43 into the rectangular frame 46, the conical block 43 will gradually embed into the groove. Through the squeezing action of the inclined surface, the four positioning blocks 48 will expand outwards synchronously, thus tightly pressing against the inner wall of the protection tube. This achieves adaptive centering clamping for protection tubes of different diameters, ensuring the coaxiality of the protection tube during grinding and effectively improving grinding accuracy.

[0024] A spring B412 is fixedly connected to the inner wall of the rectangular frame 46. The other end of the spring B412 is fixedly connected to the positioning block 48. When the conical block 43 is retracted into the rectangular frame 46, the spring B412 can use its own elastic contraction force to drive the positioning block 48 to reset inward, so that the positioning block 48 is separated from the inner wall of the protective tube, making it easier for the operator to quickly take out the polished protective tube and improve the operating efficiency.

[0025] In practical use, the above-mentioned equipment is first used by placing one end of the protective tube to be ground on the outside of the positioning block 48. The hydraulic telescopic rod 42 is then activated, and its output end pushes the conical block 43 towards the rectangular frame 46. The conical block 43 gradually inserts into the groove on the inside of the positioning block 48. As the conical block 43 goes deeper, the four positioning blocks 48 slide outward along the moving rod 47 under the pressure of the conical block 43, and the spring B412 is compressed until the arc-shaped end of the positioning block 48 is tightly attached to the inner wall of the protective tube, thus completing the centering and clamping of the protective tube. Once the protective tube is fixed, the hydraulic telescopic rod 42 continues to move the conical block 43, which in turn causes the rectangular frame 46 and the sliding rod 44 to slide synchronously toward the fixed plate 2. The spring A411 is compressed by the ring 410, and the protective tube passes through the circular opening of the fixed plate 2 under the action of the positioning block 48. Then the grinding component 5 can grind the protective tube. After grinding, the hydraulic telescopic rod 42 retracts, causing the conical block 43 to gradually disengage from the groove inside the positioning block 48. At this time, the spring B412 returns to its elastic deformation, pulling the positioning block 48 along the moving rod 47 to slide inward toward the rectangular frame 46, releasing the clamping state on the inner wall of the protective tube, allowing the worker to easily remove the ground protective tube. Simultaneously, the spring A411 pushes the ring 410, causing the slide rod 44, connecting block 45, and rectangular frame 46 to slide away from the fixed plate 2, returning to their initial position and preparing for the next grinding operation.

[0026] Example 2, as Figures 1-8 As shown, based on Embodiment 1, a grinding assembly 5 is assembled on the outer wall of the fixed plate 2. The grinding assembly 5 includes a rotating cylinder 51, a spiral groove 52, a sliding shaft 53, a gear 54, a gear ring 55, a connecting plate 56, an electric telescopic rod 57, a U-shaped plate 58, a motor 59, and a grinding roller 510. The rotating cylinder 51 is rotatably connected to the outer wall of the fixed plate 2. The spiral groove 52 is formed on the outer wall of one side of the sliding rod 44. The sliding shaft 53 is fixedly connected to the inner wall of the rotating cylinder 51. The gear 54 is fixedly connected to the outer wall of the fixed plate 2. A fixed sleeve is installed on the outer wall of the rotating drum 51. A gear ring 55 is rotatably connected to the outer wall of the fixed plate 2. A connecting plate 56 is fixedly connected to the inner side of the gear ring 55. An electric telescopic rod 57 is fixedly connected to the bottom of the connecting plate 56. A C-shaped plate 58 is fixedly connected to the output end of the electric telescopic rod 57. A motor 59 is fixedly connected to the outer wall of the C-shaped plate 58. A grinding roller 510 is rotatably connected to the inner side of the C-shaped plate 58, and the output end of the motor 59 is fixedly connected to one end of the grinding roller 510.

[0027] The slide rod 44 slides through the middle of the rotating cylinder 51, and the slide shaft 53 is slidably connected to the inner wall of the spiral groove 52. The center of the gear ring 55 coincides with the center of the circular opening, and the gear 54 is located on the side of the gear ring 55 and meshes with it.

[0028] In practical use, after the protective tube is driven by the positioning block 48 through the circular opening of the fixed plate 2, the electric telescopic rod 57 is activated. Its output end pushes the C-shaped plate 58 and the grinding roller 510 closer to the outer wall of the protective tube until the grinding roller 510 is in close contact with the outer wall of the protective tube. Then the motor 59 is activated. The output end of the motor 59 drives the grinding roller 510 to rotate at high speed, and the grinding operation on the outer wall of the protective tube begins. Meanwhile, when the slide rod 44 slides towards the fixed plate 2 under the push of the hydraulic telescopic rod 42, the spiral groove 52 on the outer wall of the slide rod 44 drives the rotating drum 51 to rotate around its axis through the sliding shaft 53. The gear 54 on the outer wall of the rotating drum 51 rotates accordingly and drives the gear ring 55 meshing with it to rotate around the center of the circular opening. The gear ring 55 drives the electric telescopic rod 57, the shaped plate 58 and the grinding roller 510 to make circular motion synchronously through the connecting plate 56, so that the grinding roller 510 can perform all-round grinding on the outer wall of the protective tube to ensure the uniformity of grinding. If the grinding depth needs to be adjusted, the contact pressure between the grinding roller 510 and the outer wall of the protective tube can be changed by controlling the extension and retraction of the electric telescopic rod 57 to meet different grinding requirements. When the slide rod 44 is reset under the action of the spring A411, the spiral groove 52 drives the rotating drum 51 to rotate in the opposite direction, and the gear ring 55 also rotates in the opposite direction. The grinding roller 510 returns to the initial position and waits for the next operation.

[0029] Example 3, as Figures 1-8 As shown, based on Embodiment 2, a dust removal component 6 is fixedly connected to the outer wall of the fixed plate 2. The dust removal component 6 includes a mounting block 61, a connecting rod 62 that slides through the middle of the mounting block 61, a movable plate 63 that is fixedly connected to the bottom end of the connecting rod 62, a movable rod 64 that is fixedly connected to the upper end of the connecting rod 62, a mounting shaft 65 that is fixedly connected to the top of the fixed plate 2, a swing plate 69 that is fixedly sleeved on the outer wall of the mounting shaft 65, a small fan 66 that is fixedly connected to the lower end of the swing plate 69, a groove 67 that is opened on the inner side of the swing plate 69, a cam plate 610 that is fixedly sleeved on the outer wall of the rotating drum 51, and the top of the movable rod 64 that is slidably connected to the inside of the groove 67.

[0030] A spring C68 is fixedly connected to the inner side of the mounting block 61. The other end of the spring C68 is fixedly connected to the movable plate 63. The movable plate 63 is located on the side of the cam plate 610 and engages with it. The spring C68 can push the movable plate 63 to fit tightly against the contour of the cam plate 610 through its own elastic force during the rotation of the cam plate 610, ensuring that the rotation of the cam plate 610 can stably drive the movable plate 63 to perform reciprocating linear motion, providing a continuous and stable power source for the swing of the swing plate 69.

[0031] When the above-mentioned equipment is used, when the rotating drum 51 rotates under the drive of the slide rod 44, the cam plate 610 fixed on its outer wall rotates synchronously. The protruding part of the cam plate 610 periodically pushes the movable plate 63, causing the movable plate 63 to overcome the elastic force of the spring C68 and move to the side, and then drive the movable rod 64 to slide to the side through the connecting rod 62. When the protruding part of the cam plate 610 leaves the movable plate 63, the spring C68 returns to its elastic deformation, pulling the movable plate 63 back to its original position. The movable rod 64 also slides upwards, and the top of the movable rod 64 slides in the groove 67 inside the swing plate 69, causing the swing plate 69 to swing back and forth around the mounting shaft 65. This causes the small fan 66 at the lower end of the swing plate 69 to swing synchronously. At this time, the small fan 66 is activated, and the airflow blown by the fan will sweep the grinding area in all directions, blowing the dust and debris generated during grinding towards the slag outlet 3 in the middle of the base 1. The dust and debris are collected in the collection device below through the slag outlet 3, effectively preventing dust from spreading in the working environment, protecting the health of the operators, and also preventing dust from adhering to the surface of the grinding component 5 and the protective tube, affecting the grinding quality.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grinding device for producing power cable protection pipes, comprising a base, characterized in that, A fixing plate is fixedly connected to the upper end of the base, and a circular opening is provided in the middle of the fixing plate. A slag discharge port is provided in the middle of the base. A mounting plate is fixedly connected to the upper end of the base. A hydraulic telescopic rod is fixedly connected to the outer wall of the mounting plate. A conical block is fixedly connected to the output end of the hydraulic telescopic rod. A sliding rod slides through the lower side of the fixed plate. A connecting block is fixedly connected to one end of the sliding rod. A rectangular frame is fixedly connected to the upper end of the connecting block. A moving rod slides through the middle of the four faces of the rectangular frame. A positioning block is fixedly connected to the end of the moving rod located inside the rectangular frame. An elastic element for providing restoring force to the sliding rod is assembled at the upper end of the base.

2. The grinding device for producing power cable protection pipes according to claim 1, characterized in that, The elastic element includes a fixed block, a ring, and a spring A. The fixed block is fixedly connected to the upper end of the base. The end of the slide rod away from the connecting block slides through the middle of the fixed block. The ring is fixedly sleeved on the outer wall of the slide rod. The spring A is fixedly connected between the fixed block and the ring.

3. The grinding device for producing power cable protection pipes according to claim 2, characterized in that, The outer periphery of the positioning block near the fixing plate is arc-shaped, and a matching groove is provided on the inner side of the positioning block near the conical block.

4. A grinding device for producing power cable protection pipes according to claim 3, characterized in that, A spring B is fixedly connected to the inner wall of the rectangular frame, and the other end of the spring B is fixedly connected to the positioning block.

5. A grinding device for producing power cable protection pipes according to claim 4, characterized in that, The outer wall of the fixed plate is equipped with a grinding assembly, which includes a rotating cylinder, a spiral groove, a sliding shaft, a gear, a gear ring, a connecting plate, an electric telescopic rod, a C-shaped plate, a motor, and a grinding roller. The rotating cylinder is rotatably connected to the outer wall of the fixed plate. The spiral groove is formed on the outer wall of one side of the sliding rod. The sliding shaft is fixedly connected to the inner wall of the rotating cylinder. The gear is fixedly sleeved on the outer wall of the rotating cylinder. The gear ring is rotatably connected to the outer wall of the fixed plate. The connecting plate is fixedly connected to the inner side of the gear ring. The electric telescopic rod is fixedly connected to the bottom of the connecting plate. The C-shaped plate is fixedly connected to the output end of the electric telescopic rod. The motor is fixedly connected to the outer wall of the C-shaped plate. The grinding roller is rotatably connected to the inner side of the C-shaped plate, and the output end of the motor is fixedly connected to one end of the grinding roller.

6. A grinding device for producing power cable protection pipes according to claim 5, characterized in that, The slide rod slides through the middle of the rotating cylinder, and the slide shaft is slidably connected to the inner wall of the spiral groove.

7. A grinding device for producing power cable protection pipes according to claim 6, characterized in that, The center of the gear ring coincides with the center of the circular opening, and the gear is located on the side of the gear ring and meshes with it.

8. A grinding device for producing power cable protection pipes according to claim 7, characterized in that, A dust removal assembly is fixedly connected to the outer wall of the fixed plate. The dust removal assembly includes a mounting block, through which a connecting rod slides. A movable plate is fixedly connected to the bottom end of the connecting rod, and a movable rod is fixedly connected to the upper end of the connecting rod. A mounting shaft is fixedly connected to the top of the fixed plate, and a swing plate is fixedly sleeved on the outer wall of the mounting shaft. A small fan is fixedly connected to the lower end of the swing plate, and a sliding groove is formed on the inner side of the swing plate. A cam plate is fixedly sleeved on the outer wall of the rotating drum, and the top of the movable rod is slidably connected inside the sliding groove.

9. A grinding device for producing power cable protection pipes according to claim 8, characterized in that, A spring C is fixedly connected to the inner side of the mounting block, and the other end of the spring C is fixedly connected to the movable plate. The movable plate is located on the side of the cam plate and engages with it.

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