A turning device for a crane wear pin shaft

Abstract

The application relates to the technical field of turning processing, in particular to a turning processing device for a crane wear-resistant pin shaft, which comprises a base, a movable seat movably arranged on the top of the base, a clamping seat movably arranged on the top of the movable seat, a supporting seat fixedly arranged in the clamping seat, and a receiving cavity arranged between the supporting seat and the clamping seat. The application can quickly limit the workpiece, complete the limiting and fixing of pin shafts with different diameters, realize the processing and fixing of the same pin shaft under two diameters, solve the problem of single workpiece clamping and fixing point, and realize the extrusion fixing of the double-diameter pin shaft under the extrusion of the movable frame and the movable rod. In addition, the movable frame and the movable rod are matched to realize the limiting and supporting of the pin shaft.

Description

Technical Field

[0001] This invention relates to the field of turning technology, and in particular to a turning apparatus for a wear-resistant pin of a crane. Background Technology

[0002] Pin connections are a common connection method for moving parts in various large mechanical equipment, especially large cranes. Since the main force-bearing component of a pin connection is the pin body, and the main force direction of the pin body is radial shear force and surface radial extrusion force, wear-resistant pins need to be cut by CNC tools on a vertical milling machine to make their surface smooth and achieve the required shape and specifications during the processing of wear-resistant pins.

[0003] According to patent document CN219026062U, a vertical lifting table milling machine for machining steel plate pins includes a milling machine body. A housing is mounted on the outer surface of the milling machine body, and an operating table is mounted on the top of the housing. A sliding groove is formed on the outer surface of the milling machine body, and a slider is slidably connected to the inner wall of the groove. A fixing plate is fixedly connected to the outer surface of the slider, and a grinding machine body is mounted on the outer surface of the fixing plate. A grinding milling head is mounted on the outer surface of the grinding machine body. This technical solution, in use, facilitates the provision of positioning and fixing points for steel plate pin clamping components of different diameters through the arrangement of several positioning holes, enabling operators to better clamp and fix the steel plate pin workpieces. However, while the above technical solution achieves clamping and fixing, it cannot perform dual-diameter clamping of pins with the same diameter during turning, and it cannot provide further limiting and fixing from all sides during clamping, resulting in inconvenience in use. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide a turning device for wear-resistant pins of cranes.

[0006] To achieve the above objectives, the present invention provides a turning device for a wear-resistant pin of a crane, comprising: a base, a movable seat movably mounted on the top of the base, a clamping seat movably mounted on the top of the movable seat, a support seat fixed inside the clamping seat, a receiving cavity between the support seat and the clamping seat, and movable plates movably mounted at both ends of the bottom of the clamping seat; a turning assembly, comprising a fixed frame, a slot at the bottom of the fixed frame, a movable frame movably mounted on the top of the fixed frame, a movable rod movably mounted on the top of the movable frame, and a limiting groove at the top of the movable frame; and a limiting assembly, comprising a scraper, a cleaning frame welded to the top of the scraper, a groove on the cleaning frame, the groove being slidably mounted on the fixed frame and the movable frame, a limiting seat welded to the top of the cleaning frame, and the limiting seat being movably mounted between the movable frames.

[0007] Preferably, a reset mechanism is fixedly installed inside the limiting groove, a limiting block is fixedly installed at one end of the reset mechanism, the limiting block is slidably installed inside the limiting groove, and one end of the limiting block is welded to the bottom of the movable rod.

[0008] Preferably, the top of the fixed frame has a positioning groove, a tension mechanism is fixedly installed inside the positioning groove, a positioning block is fixedly installed at one end of the tension mechanism, the positioning block is slidably installed inside the positioning groove, and the top of the positioning block is welded and fixed to the bottom of the movable frame.

[0009] Preferably, a handle is rotatably mounted on the side of both the base and the clamping seat, a threaded post is fixedly mounted on the handle, the threaded post is rotatably mounted on the bottom of the base and the clamping seat, a protrusion is welded to the bottom of the movable plate, a slider is fixed on one side of the movable plate, a groove is opened at the bottom of the clamping seat, the slider is movably mounted inside the groove, a support mechanism is fixedly mounted on the side of the slider, and one end of the support mechanism is fixedly mounted on the inner wall of the groove.

[0010] Preferably, a displacement mechanism is fixedly installed on the side of the clamping seat, and a movable column is movably installed on the displacement mechanism. One end of the movable column is fixedly installed on the side of the scraper. A slide rail and a threaded seat are fixedly installed on the top of the movable seat, and the threaded column is rotatably installed inside the threaded seat.

[0011] Preferably, a mounting base is fixedly installed at one end of the base, a motor base is slidably installed on the side of the mounting base, a hydraulic mechanism and a drive motor are fixedly installed on the motor base, an output shaft is installed on the drive motor, and a drill bit is fixedly installed at one end of the output shaft.

[0012] Preferably, a fixing block is fixedly installed on the side of the motor base, a fastening nut is rotatably installed on the fixing block, a protective cover is movably installed on the side of the fixing block, the protective cover has a fixing groove, and the protective cover is movably installed on the side of the fastening nut through the fixing groove.

[0013] Preferably, a connector is fixed on the fixing block, a control box and a liquid supply tank are fixedly installed on the side of the mounting base, a liquid supply pipe is fixedly installed on the liquid supply tank, one end of the liquid supply pipe is fixedly installed on one end of the connector, and a fixing pipe is fixed on the inner wall of the protective cover.

[0014] Preferably, the fixed tube has a connecting hole on its side, the connecting hole is inserted into the connector, a sealing ring is fixedly installed on the connector, the sealing ring is movably installed inside the connecting hole, and a movable tube is rotatably installed at the bottom of the fixed tube.

[0015] Preferably, the movable tube has an opening on its side, and an adjusting screw is rotatably mounted on the bottom of the movable tube. A piston seat is fixedly mounted on one end of the adjusting screw, and the piston seat is movably mounted inside the movable tube.

[0016] The technical solution provided by this invention may include the following beneficial effects:

[0017] 1. This invention can quickly limit the workpiece while simultaneously fixing pins of different diameters, and also achieve machining and fixing of the same pin with two different diameters. This solves the problem of the single clamping and fixing point of existing workpieces. By moving the movable rod horizontally, the movable rod causes the movable frame to be misaligned to the left and right, and the pins of the two diameters are installed between the movable frames. The larger diameter pin is installed at the top of the movable frame. The compression and fixing of the two diameters are achieved under the compression of the movable frame and the movable rod. In addition, the movable frame and the movable rod cooperate to achieve the limiting support around the pin.

[0018] 2. This invention has the effects of early positioning and late compression fixing, as well as cleaning the inside of the clamping seat. It solves the problem that existing milling machines cannot achieve internal iron filings cleaning. The scraper is driven to move by the displacement mechanism. When the scraper moves, it scrapes the iron filings on the surface of the limiting seat. The movement of the scraper achieves the cleaning of the surface of the limiting seat. In addition, the scraper enters the surface of the movable frame and the fixed frame through the groove. The inner wall of the groove achieves scraping and cleaning of the surface. The movement of the scraper moves the limiting seat between the movable frame to clamp and fix the workpiece.

[0019] 3. This invention features adjustable spray points based on the position of the drill bit's cutting point, with controllable spray position and quantity. This solves the problem of rapid heat dissipation and cooling at the cutting point. The drill bit moves by moving the motor base, and the protective cover controls the movement of the fixed tube while blocking iron filings. Once the fixed tube reaches the cutting point, it sprays liquid to cool the high-temperature cutting area. Furthermore, the direction of the spray is controlled by rotating the movable tube. The adjusting screw rotates inside the movable tube, controlling the position of the piston seat. The number of openings used is controlled by the piston seat, thereby controlling the spray point and cooling area.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the device structure of a turning device for a crane wear-resistant pin shaft according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the clamping seat in a turning device for a crane wear-resistant pin according to an embodiment of the present invention;

[0024] Figure 3 This is an enlarged structural schematic diagram of point A in a turning device for a wear-resistant pin shaft of a crane according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a limiting component in a turning device for a wear-resistant pin shaft of a crane, according to an embodiment of the present invention.

[0026] Figure 5 This is an enlarged structural schematic diagram of point B in a turning device for a wear-resistant pin shaft of a crane according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure after the clamping seat is removed in a turning device for a crane wear-resistant pin shaft according to an embodiment of the present invention;

[0028] Figure 7 This is an enlarged structural schematic diagram of point C in a turning device for a wear-resistant pin shaft of a crane according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the inner wall of the protective cover in a turning device for a wear-resistant pin shaft of a crane, according to an embodiment of the present invention.

[0030] As shown in the figure: 1. Base; 2. Movable seat; 3. Clamping seat; 4. Rotary handle; 5. Movable plate; 6. Protrusion; 7. Support seat; 8. Turning assembly; 9. Limiting assembly; 10. Mounting seat; 11. Control box; 12. Motor mount; 13. Hydraulic mechanism; 14. Drive motor; 15. Protective cover; 16. Fastening nut; 17. Drill bit; 18. Displacement mechanism; 19. Movable column; 20. Scraper; 21. Cleaning frame; 22. Limiting seat; 23. Fixed... 24. Fixed frame; 25. Movable frame; 26. Movable rod; 27. Slider; 28. Support mechanism; 29. ​​Slot; 30. Groove; 31. Positioning slot; 32. Pulling mechanism; 33. Positioning block; 34. Limiting slot; 35. Reset mechanism; 36. Limiting block; 37. Slide rail; 38. Threaded seat; 39. Fixed block; 40. Connector; 41. Fixed groove; 42. Fixed tube; 43. Movable tube; 44. Connecting hole; 45. Opening; 46. Adjusting screw. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0032] like Figures 1 to 8As shown, a turning device for a wear-resistant pin of a crane is characterized by comprising: a base 1, a movable seat 2 movably mounted on the top of the base 1, a clamping seat 3 movably mounted on the top of the movable seat 2, a support seat 7 fixed inside the clamping seat 3, a receiving cavity between the support seat 7 and the clamping seat 3, and movable plates 5 movably mounted at both ends of the bottom of the clamping seat 3; a turning assembly 8, comprising a fixed frame 23, a slot 28 at the bottom of the fixed frame 23, a movable frame 24 movably mounted on the top of the fixed frame 23, a movable rod 25 movably mounted on the top of the movable frame 24, and a limiting groove 33 at the top of the movable frame 24; and a limiting assembly 9, comprising a scraper 20, a cleaning frame 21 welded to the top of the scraper 20, a groove 29 on the cleaning frame 21, the groove 29 being slidably mounted on the fixed frame 23 and the movable frame 24, and a limiting seat 22 welded to the top of the cleaning frame 21, the limiting seat 22 being movably mounted between the movable frame 24. The pin is placed vertically between the fixed frames 23. The cylindrical pin supports the movable frame 24. The movable frame 24 moves automatically outward under the push of the pin. As it moves, the movable frame 24 pushes the tension mechanism 31 through the positioning block 32. The tension mechanism 31 is a return spring. After being compressed, the return spring contracts and generates a rebound force. The rebound force generated by the tension mechanism 31 pushes the positioning block 32 and the movable frame 24 inward. The pushing force of the movable frame 24 completes the initial limiting and fixing of the pin. According to the diameter of the pin, the pin pushes the movable frame 24 at the center position to move. The movable frame 24 briefly moves and stops at the side of the pin on two other occasions. After being pushed, the movable frame 24 at the center completes the linear clamping of the pin.

[0033] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A reset mechanism 34 is fixedly installed inside the limiting groove 33. A limiting block 35 is fixedly installed at one end of the reset mechanism 34. The limiting block 35 is slidably installed inside the limiting groove 33, and one end of the limiting block 35 is welded to the bottom of the movable rod 25. A positioning groove 30 is opened on the top of the fixed frame 23. A tension mechanism 31 is fixedly installed inside the positioning groove 30. A positioning block 32 is fixedly installed at one end of the tension mechanism 31. The positioning block 32 is slidably installed inside the positioning groove 30, and the top of the positioning block 32 is welded to the bottom of the movable frame 24. A handle 4 is rotatably installed on the side of both the base 1 and the clamping seat 3. A threaded column is fixedly installed on the handle 4. The threaded column is rotatably installed at the bottom of the base 1 and the clamping seat 3. A protrusion 6 is welded to the bottom of the movable plate 5. A slider 26 is fixedly installed on one side of the movable plate 5. A sliding groove is opened on the bottom of the clamping seat 3. The slider 26 is movably installed inside the sliding groove. A support mechanism 27 is fixedly installed on the side of the slider 26. One end of the support mechanism 27 is fixedly installed on the inner wall of the sliding groove. The support mechanism 27 is a support spring. When the support spring is compressed, it generates a rebound force. The rebound force pushes the movable plate 5 to always seal the bottom of the storage cavity. Later, the displacement mechanism 18 drives the scraper 20 to return to its original position through the movable column 19. When the scraper 20 returns to its original position, it scrapes and cleans the surface of the support seat 7. The groove 29 moves from the fixed frame 23 and the movable frame 24 to scrape the iron filings on its surface. As the scraper 20 moves, it moves the iron filings between the storage cavities at both ends of the clamping seat 3. Later, the movable plate 5 is moved by the protrusion 6 to open the bottom opening of the storage cavity. After opening, the iron filings are collected and cleaned.

[0034] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 8A displacement mechanism 18 is fixedly installed on the side of the clamping seat 3. A movable column 19 is movably installed on the displacement mechanism 18. One end of the movable column 19 is fixedly installed on the side of the scraper 20. A slide rail 36 and a threaded seat 37 are fixedly installed on the top of the movable seat 2. The threaded column is rotatably installed inside the threaded seat 37. A mounting seat 10 is fixedly installed on one end of the base 1. A motor seat 12 is slidably installed on the side of the mounting seat 10. A hydraulic mechanism 13 and a drive motor 14 are fixedly installed on the motor seat 12. An output shaft is installed on the drive motor 14. A drill bit 17 is fixedly installed on one end of the output shaft. A fixing block 38 is fixedly installed on the side of the motor base 12. A fastening nut 16 is rotatably installed on the fixing block 38. A protective cover 15 is movably installed on the side of the fixing block 38. A fixing groove 40 is opened on the protective cover 15, and the protective cover 15 is movably installed on the side of the fastening nut 16 through the fixing groove 40. The hydraulic mechanism 13 is a hydraulic push rod, which controls the up and down movement of the entire motor base 12. When the movable column 19 moves, the scraper 20 pushes the cleaning frame 21 to the top of the fixed frame 23. The scraper 20 then advances... The fixed frame 23 and the movable frame 24 enter the groove 29 inside the slot 28. The scraper 20 moves inward continuously, moving the limiting seat 22 inward. After the limiting seat 22 moves inward, it enters both sides of the movable frame 24. Under the push of the displacement mechanism 18, the limiting seat 22 completes the secondary clamping and fixing of the pin. The limiting seat 22 is located on both sides of the movable frame 24. The limiting seat 22 and the movable frame 24 cooperate to achieve three-point fixing of the pin. Under the symmetrical three-point fixing, the six-point synchronous fixing of the pin is completed.

[0035] Please see Figure 7 and Figure 8A connector 39 is fixed to the fixed block 38. A control box 11 and a liquid supply tank are fixedly installed on the side of the mounting base 10. A liquid supply pipe is fixedly installed on the liquid supply tank, and one end of the liquid supply pipe is fixedly installed on one end of the connector 39. A fixed pipe 41 is fixed to the inner wall of the protective cover 15. A connection hole 43 is opened on the side of the fixed pipe 41, and the connection hole 43 is inserted into the connector 39. A sealing ring is fixedly installed on the connector 39 and is movably installed inside the connection hole 43. A movable pipe 42 is rotatably installed at the bottom of the fixed pipe 41. An opening 44 is opened on the side of the movable pipe 42, and an adjusting screw 45 is rotatably installed at the bottom of the movable pipe 42. A piston seat is fixedly installed at one end of the adjusting screw 45 and is movably installed inside the movable pipe 42. During turning, a cutting tool is mounted on drill bit 17. Drive motor 14 drives drill bit 17 and the cutting tool to turn the pin. Hydraulic mechanism 13 pushes motor base 12 downwards, and protective cover 15 descends simultaneously. Machining begins when the cutting tool at drill bit 17 contacts the pin. Drill bit 17 is operated automatically by CNC. Protective cover 15 shields the cutting point, and metal chips are collected through it. Simultaneously, external coolant is injected into the fixed pipe 41 through connector 39. The coolant inside the fixed pipe 41... Coolant is sprayed out through opening 44 to the cutting position. The direction of opening 44 is changed by rotating the movable tube 42. The movable tube 42 and the fixed tube 41 are connected by a friction ring. After the movable tube 42 rotates, the friction force generated by the friction ring limits the movable tube 42. Later, the piston seat is pushed to move from bottom to top inside the movable tube 42 by adjusting the screw 45. The upward movement of the piston seat controls the number of openings 44 used. Different numbers of openings 44 used adjust the cooling point and cooling area to meet the needs of different situations.

[0036] Working principle: In use, the pin is placed vertically between the fixed frames 23. The cylindrical pin supports the movable frame 24. The movable frame 24 moves automatically outward under the push of the pin. During this movement, the movable frame 24 pushes the tension mechanism 31 through the positioning block 32. The tension mechanism 31 is a return spring. After being compressed, the return spring contracts and generates a rebound force. The rebound force generated by the tension mechanism 31 pushes the positioning block 32 and the movable frame 24 inward. The pushing force of the movable frame 24 completes the initial limiting and fixing of the pin. According to the diameter of the pin, the pin pushes the movable frame 24 at the center position to move. The movable frame 24 briefly moves and stops at the side of the pin twice. After being pushed, the movable frame 24 at the center completes the linear clamping of the pin. The displacement mechanism 18 is activated to push the movable column 19 to move. The moving mechanism 18 is a linear reciprocating electric push rod. The electric push rod is connected to an external telescopic switch via an electric wire. When the switch is pressed manually, the telescopic switch is activated to push the moving column 19 to move. As the moving column 19 moves, the scraper 20 pushes the cleaning frame 21 to the top of the fixed frame 23. The scraper 20 enters the interior of the slot 28, and the fixed frame 23 and the moving frame 24 enter the interior of the groove 29. The scraper 20 continues to move inward, moving the limiting seat 22 inward. After the limiting seat 22 moves inward, it enters both sides of the moving frame 24. Under the push of the displacement mechanism 18, the limiting seat 22 completes the secondary clamping and fixing of the pin. The limiting seat 22 is located on both sides of the moving frame 24. The limiting seat 22 and the moving frame 24 cooperate to achieve three-point fixing of the pin. Under the symmetrical three-point fixing, the six-point synchronous fixing of the pin is completed.

[0037] When machining double-diameter pins, one end of the smaller diameter pin is installed between the movable frames 24. The movable rod 25 is moved horizontally on the movable frame 24. When the movable rod 25 moves horizontally, it presses against the reset mechanism 34 through the limit block 35. After being pressed, the reset mechanism 34 retracts. The reset mechanism 34 is a reset spring. After the reset spring retracts, it generates a rebound force. After one end of the smaller diameter pin is installed between the movable frames 24, the larger diameter pin is installed on the top of the movable frame 24. The pressing force generated by the movable rod 25 limits and fixes the pin again. After the seat 22 moves inward, it fixes the pin at the larger diameter position. The smaller diameter pin at the bottom is limited by the movable frame 24. During turning, the cutter is mounted on the drill bit 17, and the drive motor 14 drives the drill bit 17 and the cutter to turn the pin. The hydraulic mechanism 13 pushes the motor seat 12 downward, and the protective cover 15 descends simultaneously. When the cutter at the drill bit 17 contacts the pin, the machining begins. The drill bit 17 is operated automatically by CNC. The protective cover 15 shields the cutting point, and the metal chips pass through the protective cover 15. The coolant is collected, and simultaneously, external coolant is injected into the interior of the fixed tube 41 through connector 39. The coolant inside the fixed tube 41 is sprayed out to the cutting position through opening 44. The direction of opening 44 is changed by rotating the movable tube 42. The movable tube 42 and the fixed tube 41 are connected by a friction ring. After the movable tube 42 rotates, the friction force generated by the friction ring limits the movable tube 42. Later, the piston seat is pushed to move upward from bottom to top inside the movable tube 42 by adjusting the screw 45. The upward movement of the piston seat controls the number of openings 44 used. 4. The cooling points and cooling area can be adjusted according to the number of different cooling points to meet the needs of different situations. Later, the displacement mechanism 18 drives the scraper 20 to return to its original position through the movable column 19. When the scraper 20 returns to its original position, it scrapes and cleans the surface of the support seat 7. The groove 29 moves from the fixed frame 23 and the movable frame 24 to scrape the iron filings on its surface. As the scraper 20 moves, it moves the iron filings to the storage cavities at both ends of the clamping seat 3. Later, the movable plate 5 is moved by the protrusion 6 to open the bottom opening of the storage cavity. After opening, the iron filings are collected and cleaned.

[0038] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0040] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A turning device for wear-resistant pins of cranes, characterized in that, include: The base (1) has a movable seat (2) movably installed on the top of the base (1), and a clamping seat (3) movably installed on the top of the movable seat (2). A support seat (7) is fixed inside the clamping seat (3). A storage cavity is opened between the support seat (7) and the clamping seat (3). Movable plates (5) are movably installed at both ends of the bottom of the clamping seat (3). A turning assembly (8) includes a fixed frame (23), the bottom of the fixed frame (23) has a slot (28), a movable frame (24) is movably installed on the top of the fixed frame (23), a movable rod (25) is movably installed on the top of the movable frame (24), and a limit slot (33) is opened on the top of the movable frame (24). The limiting component (9) includes a scraper (20), a cleaning frame (21) is welded to the top of the scraper (20), a groove (29) is opened on the cleaning frame (21), the groove (29) is slidably installed on the fixed frame (23) and the movable frame (24), a limiting seat (22) is welded to the top of the cleaning frame (21), and the limiting seat (22) is movably installed between the movable frame (24).

2. The turning device for a wear-resistant pin of a crane according to claim 1, characterized in that, A reset mechanism (34) is fixedly installed inside the limiting groove (33). A limiting block (35) is fixedly installed at one end of the reset mechanism (34). The limiting block (35) is slidably installed inside the limiting groove (33). One end of the limiting block (35) is welded to the bottom of the movable rod (25).

3. The turning device for a wear-resistant pin of a crane according to claim 1, characterized in that, The top of the fixed frame (23) has a positioning groove (30), and a tension mechanism (31) is fixedly installed inside the positioning groove (30). A positioning block (32) is fixedly installed at one end of the tension mechanism (31). The positioning block (32) is slidably installed inside the positioning groove (30), and the top of the positioning block (32) is welded and fixed to the bottom of the movable frame (24).

4. The turning device for a wear-resistant pin of a crane according to claim 1, characterized in that, A handle (4) is rotatably mounted on the side of both the base (1) and the clamping seat (3). A threaded post is fixedly mounted on the handle (4). The threaded post is rotatably mounted on the bottom of the base (1) and the clamping seat (3). A protrusion (6) is welded to the bottom of the movable plate (5). Among them, a slider (26) is fixed on one side of the movable plate (5), a groove is opened at the bottom of the clamping seat (3), the slider (26) is movably installed inside the groove, a support mechanism (27) is fixedly installed on the side of the slider (26), and one end of the support mechanism (27) is fixedly installed on the inner wall of the groove.

5. The turning device for a wear-resistant pin of a crane according to claim 1, characterized in that, A displacement mechanism (18) is fixedly installed on the side of the clamping seat (3), and a movable column (19) is movably installed on the displacement mechanism (18). One end of the movable column (19) is fixedly installed on the side of the scraper (20). The top of the movable seat (2) is fixed with a slide rail (36) and a threaded seat (37), and the threaded column is rotatably installed inside the threaded seat (37).

6. The turning device for a wear-resistant pin of a crane according to claim 1, characterized in that, One end of the base (1) is fixedly mounted with a mounting base (10), and a motor base (12) is slidably mounted on the side of the mounting base (10). A hydraulic mechanism (13) and a drive motor (14) are fixedly mounted on the motor base (12). An output shaft is mounted on the drive motor (14), and a drill bit (17) is fixedly mounted on one end of the output shaft.

7. The turning device for a wear-resistant pin of a crane according to claim 6, characterized in that, A fixing block (38) is fixedly installed on the side of the motor base (12). A fastening nut (16) is rotatably installed on the fixing block (38). A protective cover (15) is movably installed on the side of the fixing block (38). A fixing groove (40) is opened on the protective cover (15). The protective cover (15) is movably installed on the side of the fastening nut (16) through the fixing groove (40).

8. The turning device for a wear-resistant pin of a crane according to claim 7, characterized in that, A connector (39) is fixed on the fixing block (38). A control box (11) and a liquid supply box are fixedly installed on the side of the mounting base (10). A liquid supply pipe is fixedly installed on the liquid supply box. One end of the liquid supply pipe is fixedly installed on one end of the connector (39). A fixing pipe (41) is fixed on the inner wall of the protective cover (15).

9. A turning device for a wear-resistant pin of a crane according to claim 8, characterized in that, The fixed tube (41) has a connecting hole (43) on its side. The connecting hole (43) is inserted into the connector (39). A sealing ring is fixedly installed on the connector (39). The sealing ring is movably installed inside the connecting hole (43). A movable tube (42) is rotatably installed at the bottom of the fixed tube (41).

10. A turning device for a wear-resistant pin of a crane according to claim 9, characterized in that, The movable tube (42) has an opening (44) on its side. An adjusting screw (45) is rotatably installed at the bottom of the movable tube (42). A piston seat is fixedly installed at one end of the adjusting screw (45). The piston seat is movably installed inside the movable tube (42).

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