Cable drum mechanism for underground electric carry-scraper

Abstract

The invention relates to the technical field of electric carry-scraper, and discloses a cable drum mechanism for an underground electric carry-scraper, which comprises a cable drum, a driving assembly, a motor, a drum mounting rack, a driven assembly, a chain, a support plate assembly and a cable winding reversing valve, and is characterized in that the cable drum, the driving assembly and the driven assembly are fixedly mounted on the drum mounting rack; a chain wheel is coaxially installed on one side of the cable drum and can freely rotate around a main shaft, the chain wheel, the driven assembly and the driving assembly are connected through a chain, the supporting plate assembly is installed on the other side of the cable drum, the motor is installed at one end of the driving assembly, and the cable winding reversing valve is installed on the motor. The cable can be automatically wound and unwound along with movement of the whole machine, flexibility and high efficiency are achieved, the cable can be protected, the service life is prolonged, and the use cost of the whole machine is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric scrapers, and in particular to a cable reel mechanism for underground electric scrapers. Background Art

[0002] Underground scrapers are commonly used equipment for loading, transporting, unloading and slag removal in underground mines. Underground electric scrapers are underground scrapers powered by a motor that drags a cable, and are widely used in mining operations. Because underground electric scrapers need to frequently move back and forth between the ore pile and the transport vehicle to perform transportation and unloading operations, the cables that power the motors will be continuously in a retracted and extended state, and will be constantly subjected to friction from the ground and dragging of the entire machine.

[0003] At present, the industry uses cable reels to reel in and release cables to realize the loading and unloading operations of underground electric scrapers. The cable reel continuously provides a cable reeling force to the cable through the driving motor. When the whole machine moves backward, the cable is reeled in under the action of the rotational torque provided by the motor to the reel. When the whole machine moves forward, the cable overcomes the rotational torque provided by the motor, and the reverse drag motor reverses it to achieve the purpose of releasing the cable. In this process, the torque provided by the motor is constant. When the torque is too small, the cable reeling force will be insufficient and it will not be able to be neatly coiled on the reel. When the torque is too large, the cable reeling will be too large, causing the cable to be always subjected to a large drag force when releasing the cable, causing damage to the cable and reducing its service life. It cannot meet the demand for cable reeling force during the forward and backward processes of the whole machine.

[0004] At the same time, because the motor is directly connected to the drive sprocket through the output spline shaft, the motor is subjected to radial force in addition to the reaction force of the output torque, which causes seal damage and reduces the life of the motor.

[0005] To prevent the cable from being over-released, the industry will also add encoders and other configurations to record the number of times the reel is retracted and released, and cut off the power supply of the entire machine when the cable is released to a certain length to prevent the cable from being pulled off and causing safety hazards. However, encoders and other components have the disadvantages of high failure rate, inaccurate recording, and inconvenient adjustment.

[0006] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in the field. Summary of the invention

[0007] The purpose of the present invention is to provide a cable reel mechanism for an underground electric scraper. The device has a simple structure and can automatically retract and release the cable as the whole machine moves. It is flexible and efficient, and can protect the cable, increase its service life, and reduce the cost of using the whole machine.

[0008] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions: A cable reel mechanism for an underground electric scraper comprises a cable reel, a drive assembly, a motor, a reel mounting frame, a driven assembly, a chain, a support plate assembly and a cable reeling reversing valve, wherein the cable reel, the drive assembly and the driven assembly are mounted on the reel mounting frame, a first sprocket is coaxially mounted on one side of the cable reel, the first sprocket, the driven assembly and the drive assembly are connected via the chain for transmission, the support plate assembly is mounted on the other side of the cable reel, the motor is mounted on one end of the drive assembly, and the cable reeling reversing valve is mounted on the motor.

[0009] Optionally, the reel mounting frame includes a mounting frame welded body and a clamping fixing seat, the mounting frame welded body and the clamping fixing seat are fixedly connected by bolts, the cable reel is installed in a semicircular groove of the mounting frame welded body and the clamping fixing seat, and the driving assembly and the driven assembly are installed on the mounting frame welded body.

[0010] Optionally, the reel mounting frame is a triangular cantilever structure.

[0011] Optionally, the support plate assembly is fixedly mounted on the side of the cable reel by a second bolt to support the cable reel.

[0012] Optionally, the cable reel includes a reel welded body, a nylon retaining ring, a sealing plate assembly, a collector ring, a first driven sprocket, a main shaft, an outlet pipe, and a fixing seat; The winding drum welding body, the collector ring and the fixing seat are axially rotatably mounted on the main shaft, the nylon retaining ring for wiring is arranged on the side of the collector ring on the main shaft, and the outlet end of the main shaft is provided with an outlet pipe; The fixing seat is fixedly connected to the drum welding body and the first driven sprocket by a third bolt, the side surface of the drum welding body is fixedly connected to the sealing plate assembly by a first bolt, and the first driven sprocket is connected to the chain; The semicircular groove of the mounting frame welding body and the clamping fixing seat fixes and clamps the main shaft.

[0013] Optionally, the collector ring is connected to the main shaft via a first flat key; A first bearing, a second bearing and a first thin nut for limiting the position are arranged between the reel welding body, the fixing seat and the main shaft to assist the reel welding body and the mounting seat in rotational connection; The reel welding body is provided with a wire inlet, and the wire inlet is provided with a locking sleeve and a rubber sleeve; A locking flange for limiting the position of the fixing seat is provided on the side of the fixing seat, and a nylon pad is provided between the second bearing and the main shaft.

[0014] Optionally, the driving assembly includes a first mounting seat, a driving sprocket, a second flat key, a first retaining spring, a first rotating shaft, a spline sleeve, a third bearing, a third retaining spring, a fourth bolt, and a fourth nut; The motor is fixedly mounted on one side of the first mounting seat, and the motor is connected to the first rotating shaft through a spline sleeve. The first rotating shaft is mounted in the first mounting seat and fixedly connected to the driving sprocket through a second flat key, and is axially limited on the left side by a first retaining spring. The spline sleeve and the first rotating shaft are axially limited by a third retaining spring, and a first retaining spring and a third bearing for axial limiting are respectively arranged between the first rotating shaft, the driving sprocket and the first mounting seat, and a butter port is arranged on the first mounting seat. The fourth bolt and the fourth nut fixedly connect the drive assembly to the reel mounting frame.

[0015] Optionally, the driven assembly includes a second mounting seat, a second driven sprocket, a fourth retaining spring, a third flat key, a fifth retaining spring, a protective cover, a slide plate, a second rotating shaft, a slider, a fourth bearing, a fifth bolt and a fifth nut; A protective cover is disposed outside the second rotating shaft, the second rotating shaft is connected to the second driven sprocket through a third flat key, and the left axial position is limited by a fourth retaining spring, and the second rotating shaft is rotatably connected to the second mounting seat through a fourth bearing; The fourth retaining spring and the fourth bearing axially limit the second driven sprocket and the second rotating shaft, and the fifth retaining spring axially limits the fourth bearing on the left side; The second rotating shaft is connected to the slider via a thread, and the bottom of the slider is slidably engaged in the slide plate; The fifth bolt and the fifth nut are used to fix the driven assembly to the reel mounting frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the whole machine moves forward, a signal is transmitted to the cable winding reversing valve, which switches the cable winding reversing valve to the low-pressure relief valve oil circuit, so that the motor provides a smaller cable winding force to ensure the cable release of the drum; when the whole machine moves backward, a signal is transmitted to the cable winding reversing valve, which switches the cable winding reversing valve to the high-pressure relief valve oil circuit, so that the motor provides a larger cable winding force to ensure the cable reeling effect of the drum, and can protect the cable, increase its service life, and reduce the cost of using the whole machine.

[0017] The driving assembly drives the cable drum and the driven assembly to rotate through the chain transmission. The cable drum rotates with the chain to realize the retraction and release of the cable, and the driven assembly cuts off the walking action to prevent the cable from being over-released and broken when the vehicle is moving, thereby realizing the protection of the cable, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a side view of a cable reel mechanism provided by an embodiment of a cable reel mechanism for an underground electric scraper of the present invention; Figure 2 It is a front view schematic diagram of a cable reel mechanism provided by an embodiment of a cable reel mechanism for an underground electric scraper of the present invention; Figure 3 It is a schematic diagram of a cable reel provided by an embodiment of a cable reel mechanism for an underground electric scraper of the present invention; Figure 4 It is a schematic diagram of a driving assembly provided by an embodiment of a cable reel mechanism for an underground electric scraper of the present invention; Figure 5 It is a schematic diagram of a driven component provided by an embodiment of a cable drum mechanism for an underground electric scraper of the present invention.

[0020] The markings in the figure are: 1. Cable drum; 2. Driving assembly; 3. Motor; 4. Drum mounting frame; 5. Driven assembly; 6. Clamping seat; 7. Chain; 8. Support plate assembly; 9. Drum welding body; 10. Nylon retaining ring; 11. First thin nut; 12. First bearing; 13. First bolt; 14. Closing plate assembly; 15. Second bolt; 16. Collector ring; 17. Third bolt; 18. First sprocket; 19. Second bearing; 20. Main shaft; 21. Locking flange; 22. Outlet pipe; 23. Nylon pad; 24. Fixed seat; 25. First flat key ; 26. Rubber sleeve; 27. Locking sleeve; 28. Driving sprocket; 29. ​​Second flat key; 30. First retaining spring; 31. First rotating shaft; 33. Spline sleeve; 34. Third bearing; 35. Third retaining spring; 36. Fourth bolt; 37. Fourth nut; 38. First mounting seat; 39. Second driven sprocket; 40. Fourth retaining spring; 41. Third flat key; 42. Fifth retaining spring; 43. Fifth bolt; 44. Fifth nut; 45. Protective cover; 46. Slide plate; 47. Second rotating shaft; 48. Sliding block; 49. Fourth bearing; 50. Second mounting seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example

[0022] A cable drum mechanism for an underground electric scraper, such as Figure 1~Figure 5 As shown, it includes a cable drum 1, a driving component 2, a motor 3, a drum mounting frame 4, a driven component 5, a chain 7, a support plate assembly 8 and a cable reversing valve. The cable drum 1, the driving component 2 and the driven component 5 are installed on the drum mounting frame 4. A first sprocket 18 is coaxially installed on one side of the cable drum 1. The first sprocket 18, the driven component 5 and the driving component 2 are connected through the chain 7 for transmission. The support plate assembly 8 is installed on the other side of the cable drum 1. The motor 3 is installed at one end of the driving component 2. The cable reversing valve is installed on the motor 3. When the whole machine moves forward, the cable reversing valve is turned to the cable reversing valve. A signal is transmitted to the valve to switch the cable winding reversing valve to the low-pressure relief valve oil circuit, so that the motor 3 provides a smaller cable winding force to ensure the cable releasing need of the drum; when the whole machine moves backward, a signal is transmitted to the cable winding reversing valve to switch the cable winding reversing valve to the high-pressure relief valve oil circuit, so that the motor 3 provides a larger cable winding force to ensure the cable winding effect of the drum, and the cable can be protected, the service life is increased, and the cost of using the whole machine is reduced. The cable is connected to the cable reel 1, and the motor 3 provides power for the driving component 2. The driving component 2 drives the driven component 5 to rotate through the chain 7, and the cable is collected into the cable reel 1 to protect the cable.

[0023] The drum mounting frame 4 includes a mounting frame welded body and a clamping fixing seat 6, the mounting frame welded body and the clamping fixing seat 6 are fixedly connected by bolts, the semicircular grooves of the mounting frame welded body and the clamping fixing seat 6 fix and clamp the cable drum 1, the driving assembly 2 and the driven assembly 5 are installed on the mounting frame welded body, the driving assembly 2 and the driven assembly 5 are installed on the mounting frame welded body, and the mounting frame is installed on the electric scraper frame for installing the driving assembly 2 and the driven assembly 5.

[0024] The reel mounting frame 4 is a triangular cantilever structure, which ensures strength while saving space and facilitating the installation of components.

[0025] The support plate assembly 8 is fixedly installed by the second bolt 15 to support the cable reel 1 to ensure the supporting effect.

[0026] The cable reel 1 includes a reel welding body 9, a nylon retaining ring 10, a sealing plate assembly 14, a collector ring 16, a first driven sprocket, a main shaft 20, a wire outlet tube 22, and a fixed seat 24. The reel welding body 9, the collector ring 16 and the fixed seat 24 are axially rotatably installed on the main shaft 20. The nylon retaining ring 10 for wiring is provided on the side of the collector ring 16 on the main shaft 20. The wire outlet end of the main shaft 20 is provided with an outlet tube 22. The fixed seat 24 is fixedly connected to the reel welding body 9 and the first driven sprocket by a third bolt 17. The side of the reel welding body 9 is fixedly connected to the sealing plate assembly 14 by a first bolt 13. The first driven sprocket is connected to the chain 7. The external cable is connected to the rotor of the collector ring 16 through the reel, and the internal cable is connected to the stator of the collector ring 16. The stator and rotor of the collector ring 16 are connected to each other, and the circuit is always connected under the action of the internal carbon brush. The semicircular grooves of the mounting frame welding body and the clamping fixing seat 6 fix the clamping spindle 20. Through the internal structure design of the collector ring 16, when the reel welding body 9 rotates, the cable is retracted and released, and the collector ring 16 rotor is driven to rotate freely and flexibly relative to the stator, ensuring that the line is always in a energized state. The cables connected to the stator of the collector ring 16 enter the inner cavity of the spindle 20 through the nylon retaining ring 10 and the three oblong holes of the spindle 20 respectively, and are wired along the internal cavity of the spindle 20 and connected to the electrical cabinet through the outlet pipe 22. The nylon retaining ring 10 ensures that the line will not contact other metal parts during entering the inner cavity of the spindle 20 to cause a short circuit.

[0027] The collector ring 16 is connected to the main shaft 20 through the first flat key 25 , and the stator of the collector ring 16 is fixed to the main shaft 20 through the first flat key 25 . The rotor can rotate synchronously with the drum welding body 9 relative to the axial direction of the main shaft 20 .

[0028] A first bearing 12, a second bearing 19 and a first thin nut 11 for limiting the rotation connection between the drum welding body 9 and the fixing seat 24 and the main shaft 20 are arranged so that the drum welding body 9 and the fixing seat can rotate relative to the axial direction of the main shaft 20.

[0029] The drum welding body 9 is provided with a wire inlet, which is provided with a locking sleeve 27 and a rubber sleeve 26 . The external cable enters the reel through the wire inlet and is connected to the collector ring 16 . The locking sleeve 27 and the rubber sleeve 26 are used to achieve waterproof and dustproof sealing.

[0030] A locking flange 21 for limiting the position of the fixing seat 24 is disposed on the side of the fixing seat 24 , and a nylon pad 23 is disposed between the second bearing 19 and the main shaft 20 .

[0031] The driving assembly 2 includes a first mounting seat 38, a driving sprocket 28, a second flat key 29, a first retaining spring 30, a first rotating shaft 31, a spline sleeve 33, a third bearing 34, a third retaining spring 35, a fourth bolt 36, and a fourth nut 37. The motor 3 is fixedly mounted on one side of the first mounting seat 38, and the motor 3 is connected to the first rotating shaft 31 through the spline sleeve 33. The first rotating shaft 31 is mounted in the first mounting seat 38 and fixedly connected to the driving sprocket 28 through the second flat key 29, and is axially limited on the left side by the first retaining spring 30. The spline sleeve 33 and the first rotating shaft 31 are axially limited by the third retaining spring 35. There are respectively provided between the first rotating shaft 31, the driving sprocket 28 and the first mounting seat 38 for The first retaining spring 30 and the third bearing 34 are axially limited, and a grease port is provided on the first mounting seat 38. The fourth bolt 36 and the fourth nut 37 fix the drive assembly 2 to the drum mounting frame 4. The motor 3 transmits the torque to the active sprocket 28 through the spline sleeve 33, and then transmits the power to the first driven sprocket through the chain 7, and finally drives the cable drum 1 to rotate to achieve cable retraction and release. The first mounting seat 38 is provided with a grease port, and the service life of the third bearing 34 can be increased by injecting lubricating oil. During operation, the radial force of the chain 7 reacting to the active sprocket 28 is completely offset by the two groups of third bearings 34 and will not be transmitted to the output shaft of the motor 3, thereby increasing the service life of the motor 3. Example

[0032] Based on the first embodiment, an implementation method of a cable drum mechanism for an underground electric scraper is provided: The driven assembly 5 includes a second mounting seat 50, a second driven sprocket 39, a fourth retaining spring 40, a third flat key 41, a fifth retaining spring 42, a protective cover 45, a slide plate 46, a second rotating shaft 47, a slider 48, a fourth bearing 49, a fifth bolt 43 and a fifth nut 44; A protective cover 45 is disposed outside the second rotating shaft 47. The second rotating shaft 47 is connected to the second driven sprocket 39 via a third flat key 41 and is axially limited on the left side by a fourth retaining spring 40. The second rotating shaft 47 is rotatably connected to the second mounting seat 50 via a fourth bearing 49. The fourth retaining spring 40 and the fourth bearing 49 axially limit the second driven sprocket 39 and the second rotating shaft 47, and the fifth retaining spring 42 axially limits the fourth bearing 49 on the left side; The second rotating shaft 47 is connected to the slider 48 via threads, and the bottom of the slider 48 is slidably engaged in the slide plate 46; The fifth bolt 43 and the fifth nut 44 are used to fix the driven assembly 5 to the reel mounting frame 4 .

[0033] Different from the first embodiment, when the second driven sprocket 39 drives the second rotating shaft 47 to rotate, the slider 48 moves along the slide plate 46 driven by the thread of the second rotating shaft 47, and when it collides with the proximity switch fixed on the slide plate 46, the whole machine power-off control is triggered, the whole machine stops moving, and the motor 3 stops working. When the second rotating shaft 47 is driven by the second driven sprocket 39 to rotate, the slider 48 moves along the long rectangular hole of the slide plate 46 under the action of the thread. Through this design, it is ensured that the rotation of the cable reel 1 and the rotation of the second driven sprocket 39 always maintain a certain speed ratio, with high stability, safety and reliability. When the slider 48 moves to the sensor position, the sensor is powered off by touching it, and the whole machine is controlled to power off.

[0034] Working process: When the whole machine moves back and forth between the material pile and the unloading point, the cable is reeled in and out to provide power for the whole machine.

[0035] When the whole machine moves forward, signal A is transmitted to the cable winding reversing valve, so that the cable winding reversing valve is switched to the low-pressure relief valve oil circuit, so that the motor 3 outputs a smaller torque. The torque of the motor 3 is transmitted to the cable drum 1 through the chain 7, ensuring that the cable drum 1 produces a tightening reaction force on the cable with a smaller torque. At this time, the cable overcomes the cable releasing force under the action of its own weight to release the cable, and because of the existence of the cable winding force, it is ensured that the cable always remains in a tightened state and will not fall off the cable drum 1. At the same time, because the cable winding force is small, the cable will not be broken, effectively improving the service life of the cable.

[0036] While releasing the cable, the chain 7 drives the second driven sprocket 39 to rotate synchronously. When the second rotating shaft 47 rotates driven by the second driven sprocket 39, the slider 48 moves along the long rectangular hole of the slide plate 46 under the action of the thread. When the cable is released to the required limit, the slider 48 collides with the proximity switch fixed on the slide plate 46, triggering the power-off control of the whole machine, the whole machine stops moving, and the motor 3 stops working, so as to prevent the equipment from continuing to move forward and breaking the cable, causing a safety accident.

[0037] When the whole machine moves backward, signal B is transmitted to the cable winding reversing valve, so that the cable winding reversing valve is switched to the high-pressure relief valve oil circuit, so that the motor 3 provides a larger torque. The motor torque is transmitted to the cable reel 1 through the chain 7, ensuring that the reel generates a cable winding force on the cable with a larger torque, thereby achieving the cable winding effect.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only used to explain the relative position relationship, movement, etc. between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0040] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A cable reel mechanism for an underground electric scraper, characterized in that: The invention comprises a cable drum (1), a driving assembly (2), a motor (3), a drum mounting frame (4), a driven assembly (5), a chain (7), a support plate assembly (8) and a cable reversing valve. The cable drum (1), the driving assembly (2) and the driven assembly (5) are mounted on the drum mounting frame (4). A first sprocket (18) is coaxially mounted on one side of the cable drum (1). The first sprocket (18), the driven assembly (5) and the driving assembly (2) are connected via the chain (7) for transmission. The support plate assembly (8) is mounted on the other side of the cable drum (1). The motor (3) is mounted on one end of the driving assembly (2). The cable reversing valve is mounted on the motor (3).

2. The cable reel mechanism for underground electric scraper according to claim 1, characterized in that: The reel mounting frame (4) comprises a mounting frame welded body and a clamping fixing seat (6), wherein the mounting frame welded body and the clamping fixing seat (6) are fixedly connected by bolts, the cable reel (1) is mounted in semicircular grooves of the mounting frame welded body and the clamping fixing seat (6), and the driving assembly (2) and the driven assembly (5) are mounted on the mounting frame welded body.

3. The cable drum mechanism for underground electric scraper according to claim 2, characterized in that: The reel mounting frame (4) is in the form of a triangular cantilever structure.

4. The cable reel mechanism for underground electric scraper according to claim 1, characterized in that: The support plate assembly (8) is fixedly mounted on the side of the cable reel (1) by means of a second bolt (15) to support the cable reel (1).

5. The cable reel mechanism for underground electric scraper according to claim 2, characterized in that: The cable reel (1) comprises a reel welded body (9), a nylon retaining ring (10), a sealing plate assembly (14), a collector ring (16), a first driven sprocket, a main shaft (20), an outlet pipe (22), and a fixing seat (24); The winding drum welding body (9), the collector ring (16) and the fixing seat (24) are axially rotatably mounted on the main shaft (20); the nylon retaining ring (10) for wiring is arranged on the side of the collector ring (16) on the main shaft (20); and an outlet pipe (22) is arranged at the outlet end of the main shaft (20); The fixing seat (24) is fixedly connected to the drum welding body (9) and the first driven sprocket by means of a third bolt (17); the side surface of the drum welding body (9) is fixedly connected to the sealing plate assembly (14) by means of a first bolt (13); and the first driven sprocket is connected to the chain (7).

6. The cable reel mechanism for underground electric scraper according to claim 5, characterized in that: The collector ring (16) is connected to the main shaft (20) via a first flat key (25); A first bearing (12) for assisting the rotational connection between the reel welding body (9) and the mounting seat, a second bearing (19) and a first thin nut (11) for limiting the position are arranged between the reel welding body (9) and the fixing seat (24) and the main shaft (20); The reel welding body (9) is provided with a wire inlet, and the wire inlet is provided with a locking sleeve (27) and a rubber sleeve (26); A locking flange (21) for limiting the position of the fixing seat (24) is provided on the side of the fixing seat (24), and a nylon pad (23) is provided between the second bearing (19) and the main shaft (20).

7. The cable reel mechanism for underground electric scraper according to claim 1, characterized in that: The driving assembly (2) comprises a first mounting seat (38), a driving sprocket (28), a second flat key (29), a first retaining spring (30), a first rotating shaft (31), a spline sleeve (33), a third bearing (34), a third retaining spring (35), a fourth bolt (36), and a fourth nut (37); The motor (3) is fixedly mounted on one side of the first mounting seat (38); the motor (3) is connected to the first rotating shaft (31) via a spline sleeve (33); the first rotating shaft (31) is mounted in the first mounting seat (38) and fixedly connected to the driving sprocket (28) via a second flat key (29); and is axially limited on the left side via a first retaining spring (30); the spline sleeve (33) and the first rotating shaft (31) are axially limited via a third retaining spring (35); a first retaining spring (30) and a third bearing (34) for axial limitation are respectively arranged between the first rotating shaft (31), the driving sprocket (28) and the first mounting seat (38); a grease port is arranged on the first mounting seat (38); and the fourth bolt (36) and the fourth nut (37) are fixedly connected to the drive assembly (2) and the reel mounting frame (4).

8. The cable reel mechanism for underground electric scraper according to claim 1, characterized in that: The driven assembly (5) comprises a second mounting seat (50), a second driven sprocket (39), a fourth retaining spring (40), a third flat key (41), a fifth retaining spring (42), a protective cover (45), a slide plate (46), a second rotating shaft (47), a slider (48), a fourth bearing (49), a fifth bolt (43) and a fifth nut (44); A protective cover (45) is disposed outside the second rotating shaft (47); the second rotating shaft (47) is connected to the second driven sprocket (39) via a third flat key (41) and is axially limited on the left side via a fourth retaining spring (40); the second rotating shaft (47) is rotatably connected to the second mounting seat (50) via a fourth bearing (49); The fourth retaining spring (40) and the fourth bearing (49) perform axial position limiting on the second driven sprocket (39) and the second rotating shaft (47), and the fifth retaining spring (42) performs left axial position limiting on the fourth bearing (49); The second rotating shaft (47) is connected to the sliding block (48) via a thread, and the bottom of the sliding block (48) is slidably engaged in the slide plate (46); The fifth bolt (43) and the fifth nut (44) are used to fixedly connect the driven assembly (5) and the reel mounting frame (4).

Images