A joint polishing device and method based on hydraulic pipe production and processing
By using a bidirectional threaded screw to drive the transmission plate and the fixed plate for meshing and connection, and the piston rod of the cleaning component for cleaning, the problem of unstable positioning and debris cleaning in hydraulic pipe joint polishing equipment during the fixing process is solved, achieving a highly efficient and stable polishing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANWOOL(CHANGZHOU)HYDRAULIC SYST MFG CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-06-12
AI Technical Summary
Existing hydraulic pipe joint polishing equipment is prone to bending under stress during the fixing process, which leads to unstable positioning, affects polishing accuracy and surface quality, and makes it difficult to meet the needs of high-efficiency production of multiple specifications. In addition, debris can easily enter the thread of the machine head during the polishing process, affecting its use.
The system employs a bidirectional threaded screw to drive the adjusting block and the fixed frame. Through the meshing connection between the transmission plate and the fixed plate, it achieves stable fixation of joints of different sizes. The piston rod and air outlet plate of the cleaning component are used to clean debris, ensuring stability and cleanliness during the grinding process.
It achieves stable fixation of joints of different sizes, reduces loosening during the grinding process, ensures polishing accuracy and surface quality, and effectively removes debris, thereby improving production efficiency and equipment lifespan.
Smart Images
Figure CN122185028A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hydraulic pipe manufacturing technology, specifically to a joint polishing device and method based on hydraulic pipe manufacturing and processing. Background Technology
[0002] Hydraulic pipes, as a core component of hydraulic transmission systems, undertake the core functions of high-pressure medium transportation and precise power transmission. They are indispensable key components in fields such as engineering machinery, mining machinery, aerospace, new energy equipment, shipbuilding and marine engineering, and the automotive industry. Their performance directly determines the operational stability and safety of complete sets of equipment. Among them, hydraulic pipe fittings undertake the core functions of high-pressure fluid sealing transportation, pipeline routing adaptation, and vibration displacement compensation. Their sealing reliability, pressure resistance, and fatigue resistance directly determine the operational safety and service life of the entire hydraulic system. They are core components in the production of hydraulic pipe assemblies, and polishing equipment is required during the processing of hydraulic pipe fittings. Existing hydraulic pipe fitting polishing equipment uses a fixing method of clamping the pipe body and limiting the fitting with a stop plate. During polishing, the pipe body is prone to bending under stress, which leads to unstable fitting positioning and affects polishing accuracy and surface quality. If curved clamping blocks are used to directly clamp the fitting, the clamping blocks need to be changed frequently according to the fitting specifications, which cannot meet the requirements of positioning accuracy and efficient production of multiple specifications. In addition, the fitting will generate debris during polishing, which will enter the gap at the thread of the machine head and affect the subsequent use of the fitting.
[0003] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention
[0004] The purpose of this invention is to provide a joint polishing device and method based on hydraulic pipe production and processing, in order to solve the technical problems in the above-mentioned hydraulic pipe joint polishing equipment, which adopts the fixing method of pipe body clamping and joint abutment plate limiting, the pipe body is easily deformed by force during polishing, resulting in unstable joint positioning, affecting polishing accuracy and surface quality. If curved surface clamping blocks are used to directly clamp the joint, the clamping blocks need to be changed frequently according to the joint specifications, which cannot meet the technical problems of positioning accuracy and efficient production of multiple specifications. This invention provides a solution that is significantly different from the prior art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a joint polishing device based on hydraulic pipe production and processing, comprising a polishing machine body, a support base connected above the polishing machine body, a main frame connected above the polishing machine body, a motor installed at the top of the main frame, a bidirectional threaded screw connected to the output end of the motor, the bidirectional threaded screw being rotatably connected to the main frame, an adjusting block threadedly connected to the bidirectional threaded screw, the adjusting block being slidably connected to the main frame, a connecting rod connected to the bottom of the adjusting block, the connecting rod being slidably connected to a sliding sleeve, a shelf plate connected to the bottom end of the sliding sleeve, the shelf plate being slidably connected to the main frame, a fixed frame being slidably connected to the bottom of the shelf plate, a transmission plate being slidably connected to the inner side of the fixed frame, the transmission plate being meshed with a fixed plate, and the fixed plate being rotatably connected to the fixed frame, a protective frame connected to the outer side of the upper part of the polishing machine body, rollers installed on both sides of the fixed frame, a limit frame connected to the main frame on one side of the adjusting block, and the rollers fitting against the inner groove wall of the limit frame; A cleaning component is disposed between the adjusting block and the fixed frame.
[0006] Preferably, the cleaning component includes a connecting rod hinged to the bottom of the adjusting block, a connecting block hinged to the bottom end of the connecting rod, an air collection frame connected above the shelf, the air collection frame having an air inlet and an air outlet, and both the air inlet and the air outlet being equipped with a one-way valve, a piston rod slidably connected to the inner side of the air collection frame, and the piston rod being connected to the connecting block, a gear plate slidably connected to the inner side of the fixed frame, an air outlet plate connected to the bottom of the gear plate, the air outlet plate being connected to the air outlet of the air collection frame through an air pipe, a gear rod rotatably connected to the inner side of the fixed frame, and the gear rod meshing with the gear plate and the fixed plate.
[0007] Preferably, a first spring is connected to the inner side of the fixed frame, and the other end of the first spring is connected to the transmission plate.
[0008] Preferably, a second spring is connected to the inner side of the limiting frame, and the other end of the second spring is connected to the shelf.
[0009] Preferably, a sliding protrusion is provided on the inner side of the main frame, and the sliding protrusion is slidably connected to the adjustment block.
[0010] Preferably, a sliding rod is connected to the inner side of the shelf, and the sliding rod is slidably connected to the fixed frame.
[0011] Preferably, the bottom of the air outlet plate has three sets of nozzles, and all three sets of nozzles are designed to be inclined.
[0012] Preferably, a guide rod is connected to the inner side of the fixed frame, and the guide rod is slidably connected to the gear plate.
[0013] A method for using a joint polishing device based on hydraulic pipe manufacturing and processing includes the following steps: S1: After grinding, start the motor to drive the bidirectional threaded screw to rotate in the opposite direction, drive the adjusting block and the fixed frame away from the joint to reset, the second spring restores its deformation, drives the connecting block and the piston rod to move in the opposite direction, and discharges the air in the air collection frame through the air outlet plate to blow away the debris adsorbed by the joint, thus completing the entire process. S2: After the fixed frame drives the transmission plate to contact the joint, the transmission plate is stored in the fixed frame. The fixed plate that meshes with the transmission plate moves vertically with the fixed frame and rotates to fit the joint side. The clamping of joints of different sizes is completed by the transmission plate and the fixed plate. At the same time, the fixed frame drives the limit frame to move. By fitting with the roller groove, the fixed frame is adjusted horizontally to make the transmission plate aligned with the center axis of the joint, ensuring the fixing effect. S3: During the rotation of the fixed plate, the gear plate moves horizontally through the meshing gear rod, and the position of the air outlet plate is adjusted synchronously; after the joint is fixed, the polishing disc of the polishing machine body is started to complete the joint polishing operation; S4: After grinding is completed, start the motor to drive the bidirectional threaded screw to rotate in the opposite direction, drive the adjusting block and the fixed frame away from the joint to reset, the second spring restores its deformation, drives the connecting block and the piston rod to move in the opposite direction, and discharges the air in the air collection frame through the air outlet plate to blow away the debris adsorbed by the joint, thus completing the entire process.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by activating a bidirectional threaded screw to drive the adjusting block, causes the fixed frame to move vertically, which in turn causes the transmission plate and the fixed plate to move. This movement of the transmission plate and the fixed plate can fix joints of different sizes. Furthermore, during the movement of the fixed frame, it is also affected by the interaction of the rollers and the limiting frame to move horizontally, thereby adjusting the position of the transmission plate so that it is located at the center axis of the joint. This ensures the fixing effect of the transmission plate and the fixed plate on joints of different sizes and reduces the possibility of the joints loosening during the grinding process.
[0015] 2. In this invention, the vertical movement of the adjusting block also drives the horizontal movement of the piston rod. The horizontal movement of the piston rod can discharge the air inside the air collection frame through the air outlet plate. The air discharged through the air outlet plate can clean the debris adsorbed on the joint. In addition, the rotation of the fixed plate will drive the air outlet plate to move horizontally, adjusting the position of the air outlet plate, thereby enabling the air outlet plate to better clean joints of different sizes. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the side structure of the main frame of the present invention; Figure 3 This is a schematic diagram of the front structure of the main frame of the present invention. Figure 4 For the present invention Figure 3 A magnified structural diagram of part A in the diagram; Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of part B in the diagram; Figure 6 This is a schematic diagram of the gear plate and fixing plate structure of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the main frame of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixed frame of the present invention; Figure 9 This is a schematic diagram of the cleaning component structure of the present invention; Figure 10 This is a schematic diagram of the front structure of the limiting frame of the present invention.
[0017] In the diagram: 1. Polishing machine body; 2. Support base; 3. Main frame; 4. Motor; 5. Two-way threaded screw; 6. Adjusting block; 7. Connecting rod; 8. Sliding sleeve; 9. Shelf; 10. Fixing frame; 11. Transmission plate; 12. Fixing plate; 13. Protective frame; 14. Roller; 15. Limiting frame; 16. Cleaning assembly; 161. Connecting rod; 162. Connecting block; 163. Piston rod; 164. Air collection frame; 165. Gear plate; 166. Air outlet plate; 167. Gear rod. Detailed Implementation
[0018] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.
[0019] Please see Figures 1 to 10This invention provides a technical solution: a joint polishing device based on hydraulic pipe production and processing, comprising a polishing machine body 1, a support base 2 connected above the polishing machine body 1, a main frame 3 connected above the polishing machine body 1, a motor 4 installed at the top of the main frame 3, a bidirectional threaded screw 5 connected to the output end of the motor 4, the bidirectional threaded screw 5 being rotatably connected to the main frame 3, an adjusting block 6 threadedly connected to the bidirectional threaded screw 5, the adjusting block 6 being slidably connected to the main frame 3, a connecting rod 7 connected to the bottom of the adjusting block 6, the connecting rod 7 being slidably connected to a sliding sleeve 8, a shelf 9 connected to the bottom end of the sliding sleeve 8, the shelf 9 being slidably connected to the main frame 3, a fixed frame 10 slidably connected to the bottom of the shelf 9, a transmission plate 11 slidably connected to the inner side of the fixed frame 10, a fixed plate 12 meshing with the transmission plate 11, and the fixed plate 12 being rotatably connected to the fixed frame 10. A protective frame 13 is connected to the outer side of the upper part of the polishing machine body 1. Rollers 14 are installed on both sides of the fixed frame 10. The main frame 3 is connected to a limit frame 15 on one side of the adjusting block 6. The rollers 14 are in contact with the inner groove wall of the limit frame 15. The adjusting block 6 is driven to move by starting the bidirectional threaded screw 5. The movement of the bidirectional threaded screw 5 causes the fixed frame 10 to move vertically. The movement of the fixed frame 10 causes the transmission plate 11 and the fixed plate 12 to move. The movement of the transmission plate 11 and the fixed plate 12 can fix joints of different sizes. During the movement of the fixed frame 10, it will also move horizontally due to the cooperation of the rollers 14 and the limit frame 15, thereby adjusting the position of the transmission plate 11 so that the transmission plate 11 is located at the center axis of the joint. This ensures the fixing effect of the transmission plate 11 and the fixed plate 12 on joints of different sizes and reduces the loosening of the joints during the polishing process. Cleaning component 16 is disposed between adjusting block 6 and fixed frame 10.
[0020] In one embodiment of the present invention, the cleaning component 16 includes a connecting rod 161 hinged to the bottom of the adjusting block 6, a connecting block 162 hinged to the bottom end of the connecting rod 161, an air collecting frame 164 connected above the shelf 9, and the air collecting frame 164 having an air inlet and an air outlet, both of which are equipped with one-way valves. A piston rod 163 is slidably connected to the inner side of the air collecting frame 164, and the piston rod 163 is connected to the connecting block 162. A gear plate 165 is slidably connected to the inner side of the fixed frame 10, and an air outlet plate 166 is connected to the bottom of the gear plate 165. The air outlet plate 166 is connected to the air outlet of the air collecting frame 164 through an air pipe. A gear rod 167 is rotatably connected to the side, and the gear rod 167 meshes with the gear plate 165 and the fixed plate 12. During the vertical movement of the adjusting block 6, the piston rod 163 will also move horizontally. The horizontal movement of the piston rod 163 can discharge the air inside the air collection frame 164 through the air outlet plate 166. The air discharged through the air outlet plate 166 cleans the debris adsorbed above the joint. During the rotation of the fixed plate 12, the air outlet plate 166 will move horizontally to adjust the position of the air outlet plate 166, so that the air outlet plate 166 can better clean joints of different sizes. In one embodiment of the present invention, a first spring is connected to the inner side of the fixed frame 10, and the other end of the first spring is connected to the transmission plate 11. The first spring can quickly push the transmission plate 11 back to the initial position, which makes it easier for the staff to fix the subsequent joints. As one embodiment of the present invention, a second spring is connected to the inner side of the limiting frame 15, and the other end of the second spring is connected to the layer plate 9. The layer plate 9 is pushed back to the initial position by the second spring, and the elastic force of the upper and lower sets of second springs is different, so that the upper layer plate 9 and the lower layer plate 9 are mirror images of each other. As one embodiment of the present invention, a sliding protrusion is provided on the inner side of the main frame 3, and the sliding protrusion is slidably connected to the adjusting block 6. By providing the sliding protrusion, the adjusting block 6 can be limited, thereby improving the stability of the adjusting block 6 during vertical movement. In one embodiment of the present invention, a sliding rod is connected to the inner side of the shelf 9, and the sliding rod is slidably connected to the fixed frame 10. By providing the sliding rod, the fixed frame 10 can be limited to avoid the fixed frame 10 from separating from the shelf 9. As one embodiment of the present invention, the bottom of the air outlet plate 166 is provided with three sets of nozzles, and all three sets of nozzles are designed to be inclined. By providing three sets of nozzles, the debris at the connector can be cleaned better. In one embodiment of the present invention, a guide rod is connected to the inner side of the fixed frame 10, and the guide rod is slidably connected to the gear plate 165. By providing the guide rod, the gear plate 165 can be limited, thereby improving the stability of the gear plate 165 during movement.
[0021] The method provided in this embodiment is described below, and specifically includes the following steps: S1: After grinding, start motor 4 drives bidirectional threaded screw 5 to rotate in the opposite direction, driving adjustment block 6 and fixed frame 10 away from the joint to reset. The second spring restores its deformation, driving connecting block 162 and piston rod 163 to move in the opposite direction, and the air in the air collection frame 164 is discharged through air outlet plate 166 to blow away the debris adsorbed by the joint and complete the whole process operation. S2: After the fixed frame 10 drives the transmission plate 11 to contact the joint, the transmission plate 11 is stored in the fixed frame 10. The fixed plate 12, which meshes with the transmission plate 11, moves vertically with the fixed frame 10 and rotates to fit the joint side. The clamping of joints of different sizes is completed by the transmission plate 11 and the fixed plate 12. At the same time, the fixed frame 10 drives the limit frame 15 to move. By fitting with the inclined groove of the roller 14, the fixed frame 10 is adjusted horizontally so that the transmission plate 11 is aligned with the central axis of the joint to ensure the fixing effect. S3: During the rotation of the fixed plate 12, the gear plate 165 is driven to move horizontally through the meshing gear rod 167, and the position of the air outlet plate 166 is adjusted synchronously; after the joint is fixed, the polishing disc of the polishing machine body 1 is started to complete the joint polishing operation. S4: After grinding, start motor 4 to drive bidirectional threaded screw 5 to rotate in the opposite direction, drive adjustment block 6 and fixed frame 10 away from the joint to reset, the second spring restores its deformation, and drives connecting block 162 and piston rod 163 to move in the opposite direction, so that the air in the air collection frame 164 is discharged through air outlet plate 166, blowing away the debris adsorbed by the joint, and completing the whole process operation.
[0022] Working principle: First, when it is necessary to fix the joint, place the joint between the two sets of fixing frames 10, start the motor 4, and the motor 4 drives the bidirectional threaded screw 5 to rotate. Since the bidirectional threaded screw 5 is threadedly connected to the adjusting block 6, and the adjusting block 6 is slidably connected to the main frame 3, the rotation of the bidirectional threaded screw 5 will drive the adjusting block 6 to move vertically. The vertical movement of the adjusting block 6 will drive the connecting rod 7 to move towards the joint side. The movement of the connecting rod 7 will gradually insert it into the inner side of the sliding sleeve 8. Since the adjusting block 6 is hinged to the connecting rod 161, and the connecting rod 161 is hinged to the connecting block 162, the adjusting block 6 moves downward. During the operation, the connecting block 162 will also move horizontally under the influence of the connecting rod 161. The horizontal movement of the connecting block 162 will drive the piston rod 163 to move. The piston rod 163 will move horizontally inside the air collection frame 164 to draw in external air into the air collection frame 164. After the connecting rod 7 comes into contact with the bottom of the sliding sleeve 8, the connecting rod 7 will push the sliding sleeve 8 to move towards the joint side. The movement of the sliding sleeve 8 will drive the shelf 9 to move. Since the shelf 9 is connected to the limiting frame 15 through the second spring, the second spring will deform during the movement of the shelf 9. The movement of the shelf 9 will drive the fixed frame 10 to move towards the joint side. Secondly, the movement of the fixed frame 10 drives the movement of the transmission plate 11. The transmission plate 11 moves and contacts the connector. After the transmission plate 11 contacts the connector, the fixed frame 10 will continue to move so that the transmission plate 11 is gradually housed in the fixed frame 10. The vertical movement of the fixed frame 10 will also drive the vertical movement of the fixed plate 12. Since the fixed plate 12 is meshed with the transmission plate 11, after the transmission plate 11 stops moving, the vertical movement of the fixed plate 12 will be affected by the transmission plate 11 and rotate towards the transmission plate 11. The fixed plate 12 rotates and fits against the connector. The transmission plate 11 and the fixed plate 12 fix connectors of different sizes. The movement of the fixed frame 10 drives the movement of the limiting frame 15. Since the limiting frame 15 fits against the inclined groove of the roller 14, the fixed frame 10 will make a slight horizontal movement during the vertical movement due to the influence of the limiting frame 15 and the roller 14. This allows the transmission plate 11 at the bottom of the fixed frame 10 to be located above the central axis of connectors of different sizes, ensuring the fixing effect of the transmission plate 11 and the fixed plate 12 on the connector. Finally, since the gear rod 167 is meshed with the fixed plate 12 and the gear plate 165, the rotation of the fixed plate 12 will drive the gear rod 167 to rotate. The rotation of the gear rod 167 will drive the gear plate 165 to move horizontally. The horizontal movement of the gear plate 165 will drive the air outlet plate 166 to move horizontally, thus facilitating the adjustment of the position of the air outlet plate 166. After the joint is fixed, the polishing disc of the polishing machine body 1 is started to polish the joint. After polishing, the motor 4 is started again to drive the bidirectional threaded screw 5 to rotate in the opposite direction. The bidirectional threaded screw 5 rotates in the opposite direction, driving the gear rod 167 to rotate horizontally. The moving adjusting block 6 moves away from the connector, and the movement of the adjusting block 6 drives the fixed frame 10 to move away from the connector. During the movement of the adjusting block 6, the second spring will gradually recover its deformation, causing the distance between the adjusting block 6 and the shelf 9 to gradually increase. As the distance between the adjusting block 6 and the shelf 9 increases, it will drive the connecting block 162 to move horizontally. The horizontal movement of the connecting block 162 will drive the piston rod 163 to move. The movement of the piston rod 163 will discharge the air inside the air collection frame 164 through the air outlet plate 166. The air discharged through the air outlet plate 166 will clean the debris adsorbed by the connector, making it easier for the staff to use it later.
[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A joint polishing device based on hydraulic pipe production and processing, comprising a polishing machine body (1), characterized in that: A support base (2) is connected above the main body (1) of the polishing machine. A main frame (3) is also connected above the main body (1). A motor (4) is installed at the top of the main frame (3). A bidirectional threaded screw (5) is connected to the output end of the motor (4). The bidirectional threaded screw (5) is rotatably connected to the main frame (3). An adjusting block (6) is threadedly connected to the bidirectional threaded screw (5). The adjusting block (6) is slidably connected to the main frame (3). A connecting rod (7) is connected to the bottom of the adjusting block (6). The connecting rod (7) is slidably connected to a sliding sleeve (8). A shelf is connected to the bottom end of the sliding sleeve (8). (9), and the shelf (9) is slidably connected to the main frame (3). A fixed frame (10) is slidably connected to the bottom of the shelf (9). A transmission plate (11) is slidably connected to the inner side of the fixed frame (10). A fixed plate (12) is meshed with the transmission plate (11). The fixed plate (12) is rotatably connected to the fixed frame (10). A protective frame (13) is connected to the outer side of the upper part of the polishing machine body (1). Rollers (14) are installed on both sides of the fixed frame (10). A limit frame (15) is connected to the main frame (3) on one side of the adjusting block (6). The rollers (14) are in contact with the inner groove wall of the limit frame (15). Cleaning component (16) is disposed between adjusting block (6) and fixed frame (10).
2. The joint polishing equipment based on hydraulic pipe production and processing according to claim 1, characterized in that: The cleaning component (16) includes a connecting rod (161) hinged to the bottom of the adjusting block (6), and a connecting block (162) hinged to the bottom end of the connecting rod (161). An air collecting frame (164) is connected above the shelf (9), and the air collecting frame (164) has an air inlet and an air outlet, and both the air inlet and the air outlet are equipped with one-way valves. A piston rod (163) is slidably connected to the inside of the air collecting frame (164), and the piston rod (163) and the connecting block (162) are connected to each other. 2) Connected, a gear plate (165) is slidably connected to the inner side of the fixed frame (10), and an air outlet plate (166) is connected to the bottom of the gear plate (165). The air outlet plate (166) is connected to the air outlet of the air collection frame (164) through an air pipe. A gear rod (167) is rotatably connected to the inner side of the fixed frame (10), and the gear rod (167) is meshed with the gear plate (165), and the gear rod (167) is meshed with the fixed plate (12).
3. The joint polishing equipment based on hydraulic pipe production and processing according to claim 1, characterized in that: The inner side of the fixed frame (10) is connected to a first spring, and the other end of the first spring is connected to the transmission plate (11).
4. The joint polishing equipment based on hydraulic pipe production and processing according to claim 1, characterized in that: The inner side of the limiting frame (15) is connected to a second spring, and the other end of the second spring is connected to the shelf (9).
5. A joint polishing device based on hydraulic pipe production and processing according to claim 1, characterized in that: The inner side of the main frame (3) is provided with a sliding protrusion, and the sliding protrusion is slidably connected to the adjustment block (6).
6. A joint polishing device based on hydraulic pipe production and processing according to claim 1, characterized in that: The inner side of the shelf (9) is connected to a sliding rod, and the sliding rod is slidably connected to the fixed frame (10).
7. A joint polishing device based on hydraulic pipe production and processing according to claim 2, characterized in that: The bottom of the air outlet plate (166) is provided with three sets of nozzles, and all three sets of nozzles are designed to be inclined.
8. A joint polishing device based on hydraulic pipe production and processing according to claim 2, characterized in that: The inner side of the fixed frame (10) is connected to a guide rod, and the guide rod is slidably connected to the gear plate (165).
9. A method of using a joint polishing device based on hydraulic pipe production and processing, characterized in that: The method applicable to the joint polishing equipment based on hydraulic pipe production and processing according to any one of claims 1-8 includes the following steps: S1: After grinding, start the motor (4) to drive the bidirectional threaded screw (5) to rotate in the opposite direction, drive the adjusting block (6) and the fixed frame (10) away from the joint to reset, the second spring restores its deformation, and drives the connecting block (162) and the piston rod (163) to move in the opposite direction, so that the air in the air collection frame (164) is discharged through the air outlet plate (166), blowing away the debris adsorbed by the joint, and completing the whole process operation; S2: After the fixed frame (10) drives the transmission plate (11) to contact the joint, the transmission plate (11) is stored in the fixed frame (10). The fixed plate (12) meshing with the transmission plate (11) moves vertically with the fixed frame (10) and rotates to fit the joint side. The clamping of joints of different sizes is completed by the transmission plate (11) and the fixed plate (12). At the same time, the fixed frame (10) drives the limit frame (15) to move. By fitting with the inclined groove of the roller (14), the fixed frame (10) is driven to make a horizontal fine adjustment, so that the transmission plate (11) is aligned with the central axis of the joint, ensuring the fixing effect. S3: During the rotation of the fixed plate (12), the gear plate (165) is driven to move horizontally through the meshing gear rod (167), and the position of the air outlet plate (166) is adjusted synchronously; after the joint is fixed, the polishing disc of the polishing machine body (1) is started to complete the joint polishing operation. S4: After grinding, start the motor (4) to drive the bidirectional threaded screw (5) to rotate in the opposite direction, drive the adjusting block (6) and the fixed frame (10) away from the joint to reset, the second spring restores its deformation, and drives the connecting block (162) and the piston rod (163) to move in the opposite direction, so that the air in the air collection frame (164) is discharged through the air outlet plate (166), blowing away the debris adsorbed by the joint, and completing the whole process operation.