Outfield crane cable winding and unwinding device

Abstract

The invention discloses an outfield crane cable winding and unwinding device, and relates to the technical field of crane cable winding and unwinding, the outfield crane cable winding and unwinding device comprises a walking beam, a cable guide wheel, a cable drum and a bearing, and the outfield crane cable winding and unwinding device has the beneficial effects that when a cable makes contact with the outer side of the cable guide wheel, the cable guide wheel, a positioning shaft and a rotating disc are driven to rotate at the same time through friction force; when the rotating disc rotates, a sliding pin slides in a sliding groove to drive a sliding frame to reciprocate left and right, and when the sliding frame reciprocates left and right, a sliding rod pushes a piston plate to move in a piston cylinder, so that air in the piston cylinder can be input into a lubricating oil tank through a pressurizing pipe, and hydraulic oil enters a connecting pipe after the pressure in the lubricating oil tank is increased; hydraulic oil in the lubricating oil tank is input into the bearing through the connecting pipe and the connector, so that the rotation smoothness of the positioning shaft in the bearing is improved, the friction force between the cable and the cable guide wheel can be reduced by improving the rotation smoothness of the cable guide wheel, the friction force between the cable and the guide wheel can be reduced, and the situation that the cable is broken and short-circuited is avoided.

Description

Technical Field

[0001] This invention relates to the field of crane cable winding and unwinding technology, specifically to a field crane cable winding and unwinding device. Background Technology

[0002] Cranes are auxiliary devices for lifting and hoisting goods and are widely used in the field of crane technology. Among them, gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and are widely used in port cargo yards. Cranes are mainly used for important tasks such as transporting and transferring goods between ships, replenishing supplies at sea, and deploying and recovering underwater equipment. The use of cranes requires the use of cables. The cables used by cranes are usually reel cables. Reel cables are conductors composed of two or more wires and are a cable winding device that can provide power, control power and control signals to the crane. When in use, they also need to be used with guide wheels to wind and unwind the cable.

[0003] Currently, existing lifting equipment cable reel guide wheels are of a split, multi-unit design (guide wheel diameter 60mm). During daily use, the cable reel rotates, arranging the cable through the guide wheels for winding. However, because most of the guide wheels are exposed, and due to prolonged crane operation, their rotation becomes uneven and lacks smoothness. This results in varying smoothness among the multiple guide wheels. After prolonged operation, the cable experiences uneven stress on each guide wheel, leading to different degrees of wear. Consequently, severely worn guide wheels need to be replaced. The old guide rollers exert different frictional forces on the cable, which can easily cause the cable to twist, deform, or even break, leading to frequent cable breakage or short circuits, thus presenting certain shortcomings. In addition, the existing crane cable guide rollers are inconvenient to install and remove, and cannot be quickly disassembled and replaced, which is also a certain shortcoming. Similarly, the disassembly and replacement of the cable reel is also inconvenient, and it takes a lot of time to disassemble the cable reel, making it impossible to quickly replace the cable reel, thus presenting certain shortcomings. To address these issues, we propose a field crane cable winding and unwinding device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a cable winding and unwinding device for field cranes, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable winding and unwinding device for an outdoor crane, comprising a traveling beam, cable guide wheels, a cable reel, and bearings. A support plate is fixedly installed on the top of the traveling beam, and a concave frame is fixedly installed on one side of the support plate. Each bearing has a positioning shaft inside, and a turntable is fixedly installed at one end of each positioning shaft. A sliding pin is fixedly installed on one side of the turntable. A sliding sleeve is fixedly installed on one side of the concave frame, and a sliding rod is slidably installed inside the sliding sleeve. A sliding frame is fixedly installed at one end of the sliding rod, and a sliding groove is formed inside the sliding frame. The sliding pin engages with the sliding groove. A piston cylinder is fixedly installed on one side of the concave frame, and a piston plate is fixedly installed inside the piston cylinder at the other end of the sliding rod. Lubricating oil tanks are provided on both sides of the top of the concave frame. A pressure pipe is installed at the output end of the piston cylinder, and one end of the pressure pipe extends into the lubricating oil tank. Two connecting pipes are provided inside one side of the lubricating oil tank, and a connector is provided inside the top of the bearing. The connecting pipes are connected to the connectors.

[0006] Furthermore, shaft support plates are fixedly installed on both sides of the concave frame, and a threaded rod is rotatably installed inside the shaft support plate. A sleeve block is threadedly installed on the outer side of the threaded rod, and an mounting plate is fixedly installed on one side of the sleeve block. Bearings are fixedly installed inside the concave frame and on one side of the mounting plate. A cross shaft is fixedly installed on both sides of the cable guide wheel. A cross connecting groove is opened inside one end of the positioning shaft, and the cross shaft cooperates with the cross connecting groove. Limiting guide grooves are opened inside both sides of the concave frame, and the mounting plate is slidably connected to the limiting guide groove. A throttle handle is fixedly installed on one end of the threaded rod.

[0007] Furthermore, a bearing seat is fixedly installed on the top of the traveling beam, and a rotating shaft is rotatably installed inside the bearing seat. A positioning plate is fixedly installed at one end of the rotating shaft, and a connecting shaft is fixedly installed on one side of the positioning plate. A pressure plate is sleeved on the outside of the connecting shaft. Several positioning pins are fixedly installed on one side of both the positioning plate and the pressure plate. A through hole is opened in the middle of the inside of the cable reel, and the connecting shaft cooperates with the through hole. Several pin holes are opened inside both sides of the cable reel, and the positioning pins cooperate with the pin holes. A fixing nut is threadedly installed on the outside of the connecting shaft and on the side of the pressure plate.

[0008] Furthermore, an inlet check valve is provided on one side inside the piston cylinder, and an outlet check valve is provided inside the pressurization pipe.

[0009] Furthermore, two cable limiting brackets are fixedly installed on the outer side of the cable reel.

[0010] Furthermore, a stepper motor is provided on the top of the traveling beam and on one side of the bearing seat, and the output end of the stepper motor is fixedly connected to one end of the rotating shaft.

[0011] Furthermore, one end of the connecting pipe extends to the bottom of the lubricating oil tank and is equipped with an inlet head.

[0012] Furthermore, the top of the lubricating oil tank is provided with an oil filling port, and a sealing cap is threaded onto the outer side of the oil filling port.

[0013] Furthermore, a level gauge is installed inside one side of the lubricating oil tank.

[0014] Furthermore, the sliding sleeve has an internal hole that mates with the sliding rod, and the piston plate is movably connected to the inner wall of the piston cylinder.

[0015] This invention provides a cable winding and unwinding device for field cranes, which has the following advantages: 1. This field crane cable winding and unwinding device, through the arrangement of a turntable, sliding pin, sliding sleeve, sliding rod, sliding frame, piston cylinder, piston plate, pressurizing pipe, connecting pipe, and connector, allows the cable to be wound and unwound as guided by the cable guide roller. When the cable contacts the outer side of the cable guide roller, friction causes the cable guide roller and positioning shaft to rotate simultaneously with the turntable. As the turntable rotates, the sliding pin slides in the sliding groove, causing the sliding frame to move back and forth. The back and forth movement of the sliding frame causes the sliding rod to push the piston plate to move within the piston cylinder. This allows air in the piston cylinder to be input into the lubricating oil tank through the pressurizing pipe, increasing the pressure in the lubricating oil tank. The hydraulic oil then enters the connecting pipe and is input into the bearing through the connector, thereby improving the smoothness of the positioning shaft rotation within the bearing. By improving the smoothness of the cable guide roller rotation, the friction between the cable and the cable guide roller is reduced, thus preventing cable breakage and short circuits.

[0016] 2. This field crane cable winding and unwinding device, through the setting of a concave frame, shaft support plate, threaded rod, sleeve block, mounting plate, positioning shaft, cross shaft and cross connecting groove, allows for easy and quick disassembly of the cable guide wheel when it is necessary to turn the threaded rod with the throttle. The thread on the outside of the threaded rod drives the sleeve block to move, thereby moving the mounting plate and bearing and positioning shaft away from one side of the cable guide wheel. This allows the lubricating oil tank to be pulled out from the cross connecting groove, and then the cable guide wheel can be removed from the inside of the concave frame. Disassembly and replacement are convenient and quick.

[0017] 3. The cable winding and unwinding device for this field crane, through the setting of shaft seat, rotating shaft, positioning plate, connecting shaft, pressure plate, positioning pin, through hole, pin hole and fixing nut, when the cable drum needs to be disassembled and replaced, it is only necessary to remove the fixing nut from the outside of one end of the connecting shaft, and after contacting the fixing of the pressure plate, the pressure plate can be removed from one side of the cable drum, thereby releasing the fixing of the cable drum, and the cable drum can be removed from the connecting shaft. Disassembly and replacement are relatively convenient and quick. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a partial top view of the structure of the present invention; Figure 5 This is a partial structural cross-sectional view of the present invention; Figure 6 This is a partial sectional top view of the present invention; Figure 7 This is a side view of the sleeve block of the present invention; Figure 8 This is a schematic diagram of the wire guide wheel of the present invention; Figure 9 For the present invention Figure 4 Enlarged view of point A in the image; Figure 10 For the present invention Figure 3 Enlarged view of point B in the image; Figure 11 This is a partial exploded view of the structure of the present invention.

[0019] In the diagram: 1. Traveling beam; 2. Cable guide roller; 3. Cable reel; 4. Support plate; 5. Concave frame; 6. Shaft support plate; 7. Threaded rod; 8. Sleeve block; 9. Mounting plate; 10. Bearing; 11. Positioning shaft; 12. Cross shaft; 13. Turntable; 14. Sliding pin; 15. Sliding sleeve; 16. Sliding rod; 17. Sliding frame; 18. Sliding groove; 19. Piston cylinder; 20. Piston plate; 21. Intake check valve; 22. Lubricating oil tank; 23. 24. Pressure pipe; 25. One-way valve for air outlet; 26. Connecting pipe; 27. Connector; 28. Limiting guide groove; 29. ​​Throttle; 30. Cross connecting groove; 31. Shaft seat; 32. Rotating shaft; 33. Positioning plate; 34. Connecting shaft; 35. Pressure plate; 36. Positioning pin; 37. Through hole; 38. Pin hole; 39. Fixing nut; 40. Cable limit bracket; 41. Stepper motor; 42. Liquid inlet head; 43. Oil filling port; 44. Level gauge. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1 Please see Figures 1 to 10 This invention provides a technical solution: a cable winding and unwinding device for an outdoor crane, comprising a traveling beam 1, cable guide rollers 2, a cable drum 3, and bearings 10. A support plate 4 is fixedly installed on the top of the traveling beam 1, and a concave frame 5 is fixedly installed on one side of the support plate 4. Each bearing 10 has a positioning shaft 11 inside, and a turntable 13 is fixedly installed at one end of each positioning shaft 11. A sliding pin 14 is fixedly installed on one side of the turntable 13. A sliding sleeve 15 is fixedly installed on one side of the concave frame 5, and a sliding rod 16 is slidably installed inside the sliding sleeve 15. A sliding pin is fixedly installed at one end of the sliding rod 16. Frame 17 has a sliding groove 18 inside, and sliding pin 14 cooperates with sliding groove 18. A piston cylinder 19 is fixedly installed on one side of concave frame 5. The other end of sliding rod 16 extends into the piston cylinder 19 and a piston plate 20 is fixedly installed thereon. Lubricating oil tanks 22 are provided on both sides of the top of concave frame 5. A pressure pipe 23 is installed at the output end of piston cylinder 19. One end of pressure pipe 23 extends into the interior of lubricating oil tank 22. Two connecting pipes 25 are provided inside one side of lubricating oil tank 22. A connector 26 is provided inside the top of bearing 10. The connecting pipes 25 and connectors 26 are connected to each other. 26 Connection; The outer side of the cable guide wheel 2 is provided with an arc-shaped groove that mates with the cable, allowing the cable to be limited within the arc-shaped groove on the outer side of the cable guide wheel 2. During cable winding and unwinding, the cable moves outside the cable guide wheel 2, causing it to rotate due to friction. The cable guide wheel 2 drives the turntable 13 and the sliding pin 14 to rotate. The sliding pin 14 slides within the sliding groove 18 during rotation, thereby causing the sliding frame 17 to move back and forth through the arc of rotation of the sliding pin 14. When the sliding frame 17 moves, it pushes the sliding rod 16 to slide back and forth within the sliding sleeve 15. The air in the piston cylinder 19 is gradually introduced into the lubricating oil tank 22 through the pressurization pipe 23 by the piston plate 20. This increases the pressure in the lubricating oil tank 22, which then forces the lubricating fluid in the lubricating oil tank 22 into the connecting pipe 25. The lubricating oil is then introduced into the connector 26 through the connecting pipe 25, and finally injected into the bearing 10 through the connector 26. This improves the lubricity of the bearing 10, so that when the cable moves outside the cable guide wheel 2, it can drive the cable guide wheel 2 to rotate without excessive friction, thus reducing the friction between the cable and the cable guide wheel 2.

[0022] In this embodiment, furthermore, shaft support plates 6 are fixedly installed on both sides of the concave frame 5, a threaded rod 7 is rotatably installed inside the shaft support plate 6, a sleeve block 8 is threadedly installed on the outside of the threaded rod 7, an mounting plate 9 is fixedly installed on one side of the sleeve block 8, bearings 10 are fixedly installed inside the concave frame 5 and on one side of the mounting plate 9, cross shafts 12 are fixedly installed on both sides of the cable guide wheel 2, a cross connecting groove 29 is opened inside one end of the positioning shaft 11, the cross shaft 12 cooperates with the cross connecting groove 29, limit guide grooves 27 are opened inside both sides of the concave frame 5, the mounting plate 9 is slidably connected to the limit guide groove 27, and a handle 28 is fixedly installed on one end of the threaded rod 7; by rotating the handle 28 to rotate the threaded rod 7, the sleeve block 8 can be driven to move through the thread, and then... The mounting plate 9 and bearing 10 are moved away from one side of the cable guide wheel 2 along with the positioning shaft 11. After the positioning shaft 11 releases the restriction on the cross shaft 12, the cable guide wheel 2 can be pulled to the side so that the cross shaft 12 on the other side of the cable guide wheel 2 is pulled out from the cross connecting groove 29 on one side of the concave frame 5. The cable guide wheel 2 can then be removed from the lower inner side of the concave frame 5. During installation, the cable guide wheel 2 is first inserted into the cross connecting groove 29 of the positioning shaft 11 inside the concave frame 5 through the cross shaft 12. Then, the handle 28 is reversed so that the sleeve block 8 moves closer to the cable guide wheel 2 through the threaded rod 7. This allows the cross shaft 12 on the other side of the cable guide wheel 2 to be inserted into the cross connecting groove 29 in the positioning shaft 11 on one side of the mounting plate 9, thus completing the installation of the cable guide wheel 2. The installation is convenient and quick.

[0023] In this embodiment, an air inlet check valve 21 is further provided on one side inside the piston cylinder 19, and an air outlet check valve 24 is provided inside the pressurization pipe 23. The air inlet check valve 21 allows outside air to enter the piston cylinder 19 when the slide rod 16 drives the piston plate 20 to move to the left inside the piston cylinder 19. When the slide rod 16 drives the piston plate 20 to move to the right inside the piston cylinder 19, the air in the piston cylinder 19 enters the lubricating oil tank 22 through the pressurization pipe 23, and the air outlet check valve 24 opens. After the air enters the lubricating oil tank 22, the air outlet check valve 24 closes, thus preventing the air from flowing back into the piston cylinder 19 through the pressurization pipe 23 due to excessive pressure in the lubricating oil tank 22.

[0024] In this embodiment, one end of the connecting pipe 25 extends to the bottom of the lubricating oil tank 22 and is provided with an inlet head 41; the inlet head 41 allows one end of the connecting pipe 25 to be located at the bottom of the lubricating oil tank 22, which facilitates the export of hydraulic oil from the bottom of the lubricating oil tank 22.

[0025] In this embodiment, the top of the lubricating oil tank 22 is provided with an oil filling port 42, and a sealing cap is threaded on the outside of the oil filling port 42. Through the provision of the oil filling port 42, lubricating oil can be added into the lubricating oil tank 22, and the lubricating oil tank 22 can be sealed by the sealing cap after the addition is completed.

[0026] In this embodiment, a level gauge 43 is further provided inside one side of the lubricating oil tank 22; the level gauge 43 allows the level of the lubricating fluid in the lubricating oil tank 22 to be observed directly from the outside.

[0027] In this embodiment, the sliding sleeve 15 is further provided with a hole that mates with the sliding rod 16, and the piston plate 20 is movably connected to the inner wall of the piston cylinder 19. The sliding sleeve 15 can guide and limit the sliding rod 16, and the piston plate 20 can be movably connected to the inner wall of the piston cylinder 19 so that the piston plate 20 can reciprocate left and right inside the piston cylinder 19 to perform work.

[0028] Example 2 Please see Figures 1 to 3 and Figure 11 This invention provides a technical solution where a bearing seat 30 is fixedly installed on the top of the traveling beam 1, a rotating shaft 31 is rotatably installed inside the bearing seat 30, a positioning plate 32 is fixedly installed on one end of the rotating shaft 31, a connecting shaft 33 is fixedly installed on one side of the positioning plate 32, a pressure plate 34 is sleeved on the outside of the connecting shaft 33, and several positioning pins 35 are fixedly installed on one side of both the positioning plate 32 and the pressure plate 34. A through hole 36 is opened in the middle of the inside of the cable reel 3, and the connecting shaft 33 cooperates with the through hole 36. Several pin holes 37 are opened in the inside of both sides of the cable reel 3, and the positioning pins 35 cooperate with the pin holes 37. A fixing nut 38 is threadedly installed on the outside of the connecting shaft 33 and on the side of the pressure plate 34. When the cable reel 3 is damaged and needs to be re-installed... To disassemble, the fixing nut 38 can be removed from the outside of the connecting shaft 33 using a tool. Then, the pressure plate 34 can be removed from the outside of the connecting shaft 33, and the cable reel 3 can be removed from the outside of the connecting shaft 33 after the limiting position on the cable reel 3 is released. Disassembly is quick and easy. When installing the cable reel 3, the cable reel 3 is placed on the outside of the connecting shaft 33 through the through hole 36 and then positioned by the cable limiting bracket 39 and the positioning pin 35. After positioning, the pressure plate 34 is placed on the outside of the connecting shaft 33, and the positioning pin 35 on one side of the pressure plate 34 is inserted into the pin hole 37. Then, the fixing nut 38 is screwed onto the outside of the connecting shaft 33 and the pressure plate 34 to fix the cable reel 3, completing the installation. Installation is convenient.

[0029] In this embodiment, two cable limiting frames 39 are further fixedly installed on the outer side of the cable reel 3. By setting the cable limiting frames 39, the cable being wound on the outer side of the cable reel 3 can be guided and limited, so that the cable can be wound and overlapped inside the cable limiting frames 39.

[0030] In this embodiment, a stepper motor 40 is further provided on the top of the walking beam 1 and on one side of the bearing 30. The output end of the stepper motor 40 is fixedly connected to one end of the rotating shaft 31. With the stepper motor 40, the cable reel 3 can be driven to rotate in both directions, so that the cable can be wound up and unwound.

[0031] In summary, this field crane cable winding and unwinding device, when the cable needs to be wound, drives the rotating shaft 31 and cable drum 3 to rotate by turning on the stepper motor 40, thus winding the cable. During the winding process, as the cable moves outside the cable guide wheel 2, the friction force drives the cable guide wheel 2 to rotate. The cable guide wheel 2 drives the turntable 13 and the sliding pin 14 to rotate. When the sliding pin 14 rotates, it slides in the slide groove 18, thereby driving the slide frame 17 to move back and forth left and right through the arc of the rotation of the sliding pin 14. When the slide frame 17 moves, it pushes the slide rod 16 to slide back and forth in the slide sleeve 15. Simultaneously, the air in the piston cylinder 19 is gradually introduced into the lubricating oil tank 22 through the pressurization pipe 23 via the piston plate 20. This increases the pressure in the lubricating oil tank 22, which in turn forces the lubricating fluid in the lubricating oil tank 22 into the connecting pipe 25. The lubricating oil is then introduced into the connector 26 through the connecting pipe 25, and then injected into the bearing 10 through the connector 26. This improves the lubricity of the bearing 10, so that when the cable moves outside the cable guide wheel 2, the cable guide wheel 2 can be rotated without excessive friction, thus reducing the friction between the cable and the cable guide wheel 2. When the cable guide wheel 2 needs to be replaced after a long period of use, the screw rod 7 is rotated by turning the handle 28, which drives the sleeve block 8 to move through the thread. This causes the mounting plate 9 and bearing 10 to move away from the positioning shaft 11 from one side of the cable guide wheel 2. After the positioning shaft 11 releases the restriction on the cross shaft 12, the cable guide wheel 2 can be pulled to the side to pull the cross shaft 12 on the other side of the cable guide wheel 2 out of the cross connecting groove 29 on one side of the concave frame 5. The cable guide wheel 2 can then be removed from the lower inside of the concave frame 5. During installation, the cable guide wheel 2 is first inserted into the cross connecting groove 29 of the positioning shaft 11 inside the concave frame 5 through the cross shaft 12. Then, the handle 28 is reversed so that the sleeve block 8 moves closer to the cable guide wheel 2 through the screw rod 7, so that the cross shaft 12 on the other side of the cable guide wheel 2 is inserted into the cross connecting groove 29 in the positioning shaft 11 on one side of the mounting plate 9. The installation of the cable guide wheel 2 is completed. The installation is convenient and quick. When the cable reel 3 needs to be disassembled and replaced, the fixing nut 38 is removed from the outside of the connecting shaft 33 using a tool. Then, the pressure plate 34 can be removed from the outside of the connecting shaft 33, and the cable reel 3 can be removed from the outside of the connecting shaft 33 after the limiting position is released. The disassembly is convenient and quick. When installing the cable reel 3, the cable reel 3 is put on the outside of the connecting shaft 33 through the through hole 36, and then positioned by the cable limiting bracket 39 and the positioning pin 35. After positioning, the pressure plate 34 is put on the outside of the connecting shaft 33, and the positioning pin 35 on one side of the pressure plate 34 is inserted into the pin hole 37. Then, the fixing nut 38 is screwed to the outside of the connecting shaft 33 and the pressure plate 34 to fix the cable reel 3. The installation is convenient.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cable winding and unwinding device for an outdoor crane, comprising a traveling beam (1), cable guide rollers (2), a cable drum (3), and bearings (10), characterized in that: A support plate (4) is fixedly installed on the top of the walking beam (1). A concave frame (5) is fixedly installed on one side of the support plate (4). A positioning shaft (11) is provided inside each of the bearings (10). A turntable (13) is fixedly installed at one end of each of the two positioning shafts (11). A sliding pin (14) is fixedly installed on one side of the turntable (13). A sliding sleeve (15) is fixedly installed on one side of the concave frame (5). A sliding rod (16) is slidably installed inside the sliding sleeve (15). A sliding frame (17) is fixedly installed at one end of the sliding rod (16). A sliding groove (18) is opened inside the sliding frame (17). The sliding pin (14) and the sliding groove (18) In combination, a piston cylinder (19) is fixedly installed on one side of the concave frame (5), and a piston plate (20) is fixedly installed at the other end of the slide rod (16) extending into the interior of the piston cylinder (19). Lubricating oil tanks (22) are provided on both sides of the top of the concave frame (5). A pressure pipe (23) is installed at the output end of the piston cylinder (19). One end of the pressure pipe (23) extends into the interior of the lubricating oil tank (22). Two connecting pipes (25) are provided inside one side of the lubricating oil tank (22). A connector (26) is provided inside the top of the bearing (10). The connecting pipe (25) is connected to the connector (26).

2. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: A shaft support plate (6) is fixedly installed on both sides of the concave frame (5). A threaded rod (7) is rotatably installed inside the shaft support plate (6). A sleeve block (8) is threaded on the outside of the threaded rod (7). A mounting plate (9) is fixedly installed on one side of the sleeve block (8). A bearing (10) is fixedly installed inside the concave frame (5) and on one side of the mounting plate (9). A cross shaft (12) is fixedly installed on both sides of the cable guide wheel (2). A cross connecting groove (29) is opened inside one end of the positioning shaft (11). The cross shaft (12) cooperates with the cross connecting groove (29). A limit guide groove (27) is opened inside both sides of the concave frame (5). The mounting plate (9) is slidably connected to the limit guide groove (27). A throttle (28) is fixedly installed on one end of the threaded rod (7).

3. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: A bearing seat (30) is fixedly installed on the top of the walking beam (1). A rotating shaft (31) is rotatably installed inside the bearing seat (30). A positioning plate (32) is fixedly installed at one end of the rotating shaft (31). A connecting shaft (33) is fixedly installed on one side of the positioning plate (32). A pressure plate (34) is sleeved on the outside of the connecting shaft (33). Several positioning pins (35) are fixedly installed on one side of both the positioning plate (32) and the pressure plate (34). A through hole (36) is opened in the middle of the inside of the cable reel (3). The connecting shaft (33) cooperates with the through hole (36). Several pin holes (37) are opened inside both sides of the cable reel (3). The positioning pins (35) cooperate with the pin holes (37). A fixing nut (38) is threadedly installed on the outside of the connecting shaft (33) and on the side of the pressure plate (34).

4. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: An inlet check valve (21) is provided on one side inside the piston cylinder (19), and an outlet check valve (24) is provided inside the pressurization pipe (23).

5. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: Two cable limiting frames (39) are fixedly installed on the outside of the cable reel (3).

6. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: A stepper motor (40) is provided on the top of the walking beam (1) and on one side of the bearing seat (30), and the output end of the stepper motor (40) is fixedly connected to one end of the rotating shaft (31).

7. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: One end of the connecting pipe (25) extends to the bottom of the lubricating oil tank (22) and is provided with an inlet head (41).

8. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: The top of the lubricating oil tank (22) is provided with an oil filling port (42), and a sealing cap is threaded on the outside of the oil filling port (42).

9. The cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: A level gauge (43) is installed inside one side of the lubricating oil tank (22).

10. A cable winding and unwinding device for an outdoor crane according to claim 1, characterized in that: The sliding sleeve (15) has a hole inside that mates with the sliding rod (16), and the piston plate (20) is movably connected to the inner wall of the piston cylinder (19).

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