Rail type electric dragging equipment

Abstract

The utility model relates to the technical field of dragging electromechanical equipment, in particular to rail type electric dragging equipment which comprises a chassis assembly arranged above a ground connecting rail, and a front traction wheel set and a rear transmission wheel set are installed on the front side and the rear side of the bottom of the chassis assembly respectively. A power unit used for driving the front traction wheel set to operate is fixedly installed at the bottom of the middle section of the chassis assembly, a steel wire rope dragging mechanism is installed at the top of the chassis assembly, and a buffering stabilizing unit is fixedly installed at the position, on the rear side of the steel wire rope dragging mechanism, of the top of the chassis assembly. The rear end of a traction steel wire rope on the steel wire rope dragging mechanism penetrates through the buffering and stabilizing unit and is connected with a track trolley dragged on the rear side of the traction steel wire rope. According to the rail type electric dragging equipment, dual-power rail traction in the material transferring process can be achieved through the driving unit and the steel wire rope dragging mechanism, it can be effectively guaranteed that the rail trolley can stably and passively move forwards, and rapid traction and transferring of materials are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of dragging electromechanical equipment, in particular to a track-type electric dragging equipment. Background Art

[0002] In the process of transferring and transporting materials by rail, it is generally necessary to configure corresponding power equipment. At present, when transferring materials along the rail, traction and towing electromechanical equipment such as traction trolleys are often used to provide power.

[0003] For example, in the patent document with patent publication number CN208091234U, a special rail traction trolley for furnace workshop is disclosed, whose main structure includes a frame, a reversing block, a fixed shaft, a positioning pin and four casters. A rectangular through groove is provided in the middle of the frame, and four positioning holes are provided in the center of the symmetrical grooves on both sides of the through groove. A long through hole that runs through the entire frame and is perpendicular to the side wall of the through groove is also provided in the middle of the frame. The reversing block is composed of a horizontal block, a vertical block and a counterweight block that are fixed as one, and the four casters are symmetrically installed on both side ends of the frame.

[0004] It can be seen that the rail traction trolley in the above-mentioned prior art mainly uses wire rope towing when completing the towing action, but this flexible traction method cannot well control the running speed of the towed object during the traction process.

[0005] When the traction speed is too fast or there is a downward slope on the track, the towed object at the rear may continue to move due to inertia. Even after the traction trolley in front stops, there is still a risk of being hit by the towed object. After the collision, the material may shake or fall off, and the overall traction and towing stability is poor.

[0006] To this end, the utility model optimizes and improves the problems existing in the prior art in dragging materials along tracks, and hereby proposes a track-type electric dragging device that can ensure the smooth towing and movement of the towed object, so as to better solve the problems existing in the prior art. Utility Model Content

[0007] The utility model is to solve one of the above-mentioned technical problems, and the technical solution adopted is: a rail-type electric towing device, including a chassis assembly arranged above the ground-connected track, a front traction wheel group and a rear transmission wheel group are respectively installed on the front and rear sides of the bottom of the chassis assembly, the front traction wheel group and the rear transmission wheel group are both installed on the corresponding ground-connected track in a coordinated manner, a power unit for driving the front traction wheel group to operate is fixedly installed at the bottom of the middle section of the chassis assembly, a wire rope towing mechanism is installed on the top of the chassis assembly, a buffer stabilization unit is fixedly installed on the top of the chassis assembly on the rear side of the wire rope towing mechanism, and the rear end of the traction wire rope on the wire rope towing mechanism passes through the buffer stabilization unit and is connected to the rail trolley towed at the rear side thereof.

[0008] Preferably, in any of the above schemes, the front traction wheel group includes front wheel frames fixedly mounted on the inner and outer sides of the front part of the chassis assembly, respectively; a horizontally arranged front axle is mounted between the two front wheel frames; both ends of the front axle respectively movably pass through corresponding axial holes on the front wheel frames and are respectively coaxially fixedly connected to a front wheel; each of the front wheels is movably engaged with the outer side wall of the corresponding ground-connecting track through an annular wheel groove arranged on its outer side wall; and a toothed driven pulley for cooperating with the power unit is arranged in the middle of the front axle.

[0009] In any of the above schemes, preferably, the rear drive wheel group includes rear wheel frames fixedly mounted on the inner and outer sides of the rear part of the chassis assembly, respectively, a horizontally arranged rear axle is installed between the two rear wheel frames, both ends of the rear axle respectively movably pass through the corresponding axial holes on the rear wheel frames and are respectively coaxially fixedly connected to a rear wheel, and each of the rear wheels is movably clamped on the outer side wall of the corresponding ground-connecting track through an annular wheel groove arranged on its outer side wall.

[0010] In any of the above schemes, preferably, the power unit includes a motor frame fixedly mounted on the bottom of the middle section of the chassis assembly, a drive motor is fixedly mounted on the bottom of the motor frame, a motor shaft of the drive motor is coaxially connected to a toothed drive pulley, and the toothed drive pulley and the toothed driven pulley are connected by a toothed belt.

[0011] In any of the above schemes, it is preferred that the buffer stabilization unit includes a baffle stand fixedly mounted on the rear side of the chassis assembly, an anti-collision guard plate is spaced apart at the rear side of the baffle stand, and horizontally arranged buffer springs are respectively installed at the four corners of the anti-collision guard plate and the baffle stand, and both ends of each buffer spring are fixedly mounted on the corresponding front side wall of the anti-collision guard plate and the rear side wall of the baffle stand.

[0012] In any of the above schemes, it is preferred that buffer airbags are installed at intervals and symmetrically in the space surrounded by the four buffer springs, the front sides of the two buffer airbags are fixedly installed on the rear side wall of the baffle seat, and the intake pipe joint and the exhaust pipe joint with valves are fixedly installed at intervals on the bottom of the two buffer airbags.

[0013] In any of the above schemes, preferably, the wire rope towing mechanism includes a drum fixedly mounted on the top of the chassis assembly, a traction wire rope is wound on the drum, the rear end of the traction wire rope is movable through the through hole of the baffle stand and the through hole on the anti-collision guard plate respectively and is detachably fixed to the front side of the rail trolley at the rear side, bearing seats are respectively provided on the inner and outer sides of the drum, the bottoms of the bearing seats are fixed on the top of the chassis assembly, the front and rear ends of the central axis of the drum are movable through the bearing holes of the bearing seats at corresponding positions and extend to the outside thereof, a traction motor is fixedly mounted on the bearing seat on the rear side of the drum, and the motor shaft of the traction motor is coaxially fixed to the central axis of the drum at the corresponding position.

[0014] In any of the above schemes, it is preferred that the rail trolley is an unpowered trolley and the four corners of its bottom are movably connected to the corresponding ground track through rail wheels.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The rail-type electric dragging equipment in the utility model can rely on the drive unit and the wire rope dragging mechanism to realize the dual-power rail traction in the material transfer process, which can effectively ensure that the rail trolley can move forward stably and passively, and ensure the rapid traction transfer of materials.

[0017] 2. The device of the utility model can pre-control the release of the traction wire rope and control the driving unit to continue moving when the track is on a downhill section or when the brakes stop, thereby extending the interval between the chassis assembly and the rail trolley in advance, providing sufficient buffer distance for the inertia buffering of the rail trolley, and reducing the impact force on the chassis assembly due to inertia or excessive speed.

[0018] 3. Taking into account the problem of damage to the rail trolley, chassis assembly and materials caused by impact after the chassis assembly stops, a buffer stabilization unit is also added to this equipment, so that even in the event of relative impact, the shock absorption and buffering of the buffer stabilization unit can also play a good protection purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0020] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0021] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model.

[0022] Figure 3 It is a bottom view structural diagram of the chassis assembly and its components of the utility model.

[0023] Figure 4 It is a partial side structural schematic diagram of the chassis assembly and its upper components of the utility model.

[0024] Figure 5 It is a schematic diagram of the top view of the chassis assembly and its components of the utility model.

[0025] In the figure, 1. ground track; 2. chassis assembly; 3. traction wire rope; 4. rail trolley; 5. front wheel frame; 6. front axle; 7. front wheel; 8. annular wheel groove; 9. toothed driven pulley; 10. rear wheel frame; 11. rear axle; 12. rear wheel; 13. motor frame; 14. drive motor; 15. toothed drive pulley; 16. toothed belt; 17. baffle stand; 18. anti-collision guard plate; 19. buffer spring; 20. buffer airbag; 21. intake pipe joint; 22. exhaust pipe joint; 23. reel; 24. bearing seat; 25. center shaft; 26. traction motor; 27. rail wheel. DETAILED DESCRIPTION

[0026] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1-Figure 5 as shown in .

[0027] Embodiment: A rail-type electric towing device comprises a chassis assembly 2 arranged above a ground-connected track 1, a front traction wheel group and a rear transmission wheel group are respectively installed on the front and rear sides of the bottom of the chassis assembly 2, the front traction wheel group and the rear transmission wheel group are both mounted on the corresponding ground-connected track 1, a power unit for driving the front traction wheel group is fixedly installed at the bottom of the middle section of the chassis assembly 2, a wire rope towing mechanism is installed on the top of the chassis assembly 2, a buffer stabilization unit is fixedly installed on the top of the chassis assembly 2 on the rear side of the wire rope towing mechanism, the rear end of the traction wire rope 3 on the wire rope towing mechanism passes through the buffer stabilization unit and is connected to the track trolley 4 towed at the rear side thereof. The front traction wheel group and the rear transmission wheel group in this design serve the purpose of supporting the entire chassis assembly 2. At the same time, the front wheels 7 and the rear wheels 12 at the bottom of the front traction wheel group and the rear transmission wheel group can ensure stable clamping on the corresponding ground track 1 to maintain the stability of the entire chassis assembly 2. In addition, the entire chassis layer relies on the power unit to provide power. Under the action of the power unit, the entire chassis assembly 2 can be driven forward or backward along the ground track 1. After the steel wire rope dragging mechanism is connected to the rear side of the track trolley 4, it can effectively provide traction for it, ensuring that the track trolley 4 can be passively pulled forward as needed, wherein the interior of the track trolley 4 is used to store the corresponding belt transfer materials. When the traction speed is too fast or there is a downhill situation, the track trolley 4 may move forward quickly due to inertia and hit the chassis assembly 2. A corresponding buffer moving unit is set here to better ensure the buffering of the power of the track trolley 4, and at the same time reduce the shaking caused by the collision, effectively protecting the track trolley 4 and the chassis assembly 2.

[0028] In any of the above schemes, it is preferred that the front traction wheel group includes front wheel frames 5 fixedly mounted on the inner and outer sides of the front part of the chassis assembly 2, respectively, and a horizontally arranged front axle 6 is installed between the two front wheel frames 5, and the two ends of the front axle 6 are respectively movably passed through the corresponding axial holes on the front wheel frames 5 and are respectively coaxially fixedly connected to a front wheel 7, and each of the front wheels 7 is movably connected to the outer wall of the corresponding ground-connecting track 1 through an annular wheel groove 8 provided on its outer side wall, and a toothed driven pulley 9 for cooperating with the power unit is provided in the middle of the front axle 6.

[0029] In this design, the front traction wheel group is used as a driving wheel connected to the driving unit. When working, the operation of the driving unit can drive the corresponding toothed driven pulley 9 to rotate. When the toothed driven pulley 9 rotates, it can drive the corresponding front axle 6 to rotate synchronously, and finally achieve the purpose of driving the corresponding front wheel 7 to rotate and move along the ground track 1. The setting of the annular wheel groove on the driving wheel can ensure that the entire driving wheel is movable and limited on both sides of the outer wall of the corresponding ground track 1.

[0030] In any of the above schemes, it is preferred that the rear drive wheel group includes rear wheel frames 10 respectively fixedly mounted on the inner and outer sides of the rear part of the chassis assembly 2, and a horizontally arranged rear axle 11 is installed between the two rear wheel frames 10, and the two ends of the rear axle 11 are respectively movably passed through the corresponding axial holes on the rear wheel frames 10 and are respectively coaxially fixedly connected to a rear wheel 12, and each of the rear wheels 12 is movably clamped on the outer side wall of the corresponding ground track 1 through the annular wheel groove 8 arranged on the outer side wall thereof.

[0031] The rear driving wheel set designed in the utility model plays a driven and passive role during operation, and mainly realizes the passive rotation by following the rotation of the front traction wheel during operation.

[0032] In any of the above schemes, it is preferred that the power unit includes a motor frame 13 fixedly mounted on the bottom of the middle section of the chassis assembly 2, and a drive motor 14 is fixedly mounted on the bottom of the motor frame 13. The motor shaft of the drive motor 14 is coaxially connected to a toothed drive pulley 15, and the toothed drive pulley 15 is connected to the toothed driven pulley 9 through a toothed belt 16.

[0033] It should be noted that the power unit in the present design rotates by the operation of the drive motor 14. During the rotation of the drive motor 14, it can drive the corresponding toothed drive pulley 15, and rely on the toothed belt 16 to drive the corresponding toothed driven pulley 9 to rotate, and finally drive the entire chassis assembly 2 to move along the ground track 1 under the action of the front traction wheel group.

[0034] In addition, the drive motor 14 here can also serve as a self-locking and braking function when it is not started, so that the entire chassis assembly 2 is in a locked state.

[0035] In any of the above schemes, it is preferred that the buffer stabilization unit includes a baffle stand 17 fixedly mounted on the rear side of the chassis assembly 2, an anti-collision guard plate 18 is arranged at a rear interval of the baffle stand 17, and horizontally arranged buffer springs 19 are respectively installed at the four corners of the anti-collision guard plate 18 and the baffle stand 17, and both ends of each buffer spring 19 are fixedly mounted on the corresponding front side wall of the anti-collision guard plate 18 and the rear side wall of the baffle stand 17.

[0036] The main function of the buffer stabilization unit is to absorb the impact energy of the rail trolley 4 when it collides. During the absorption process, the energy is mainly absorbed by the anti-collision guard plate 18 compressing each buffer spring 19 to absorb the energy.

[0037] In any of the above schemes, it is preferred that buffer airbags 20 are installed symmetrically and spaced apart in the space surrounded by the four buffer springs 19, the front sides of the two buffer airbags 20 are fixedly installed on the rear side wall of the baffle seat 17, and the intake pipe joint 21 and the exhaust pipe joint 22 with valves are fixedly installed at the bottom of the two buffer airbags 20.

[0038] When the impact force is too large and cannot be fully absorbed by the force of the buffer spring 19 alone, the buffer airbag 20 is used to achieve the purpose of secondary buffering and shock absorption; among them, by controlling the corresponding valves on the intake pipe joint 21 and the exhaust pipe joint 22, the interior of the buffer airbag 20 can be inflated or deflated, and each buffer airbag 20 can be pre-filled with an appropriate amount of gas as needed, thereby achieving different buffering and shock absorption effects.

[0039] In any of the above schemes, it is preferred that the wire rope towing mechanism includes a drum 23 fixedly mounted on the top of the chassis assembly 2, a traction wire rope 3 is wound on the drum 23, the rear ends of the traction wire rope 3 are movable through the through holes of the baffle stand 17 and the through holes on the anti-collision guard plate 18 respectively, and are detachably fixedly connected to the front side of the rail trolley 4 on the rear side, bearing seats 24 are respectively provided on the inner and outer sides of the drum 23, the bottoms of the bearing seats 24 are fixedly mounted on the top of the chassis assembly 2, the front and rear ends of the central axis 25 of the drum 23 are movable through the bearing holes of the bearing seats 24 at the corresponding positions and extend to the outside thereof, a traction motor 26 is fixedly mounted on the bearing seat 24 on the rear side of the drum 23, and the motor shaft of the traction motor 26 is coaxially fixedly connected to the central axis 25 of the drum 23 at the corresponding position.

[0040] The wire rope dragging mechanism designed in the utility model mainly plays the role of secondary power. When the driving unit is in the braking state, the entire chassis assembly 2 and the ground track 1 are relatively stationary. At this time, the forward and reverse rotation of the traction motor 26 on the wire rope dragging mechanism can drive the traction wire rope 3 to be released or retracted, so as to pull and shift the traction track trolley 4 within an appropriate distance in the positioning state.

[0041] In addition, when the drive unit is in operation, the entire chassis layer is in a state of moving along the ground track 1. By controlling the traction motor 26 to lock, the traction wire rope 3 and the rail trolley 4 can be driven to continue moving forward under the action of the drive unit; when the rail trolley 4 goes downhill or the drive unit decelerates, the traction motor 26 of the wire rope dragging mechanism is controlled to release the traction wire rope 3, so that the traction wire rope 3 is in a relaxed state. At this time, the rail trolley 4 can achieve the purpose of unpowered deceleration, thereby preventing the rail trolley 4 from hitting the chassis assembly 2.

[0042] When the load of the rail trolley 4 is large, the traction effect can be improved by controlling the wire rope dragging mechanism and the driving unit to apply force synchronously.

[0043] In any of the above solutions, it is preferred that the rail trolley 4 is an unpowered trolley and the four corners of its bottom are movably connected to the corresponding ground track 1 through rail wheels 27.

[0044] The rail trolley 4 is mainly connected to the corresponding ground track 1 by the rail wheels 27. It has no power itself and mainly relies on external traction to achieve the purpose of movement when moving.

[0045] Specific working principle: The track-type electric traction equipment adopts a dual traction power structure to realize the traction and displacement of the track trolley 4. When working, the front traction wheel group and the rear transmission wheel group play the purpose of supporting the entire chassis assembly 2, and at the same time, the front wheels 7 and the rear wheels 12 at the bottom of the front traction wheel group and the rear transmission wheel group can ensure stable clamping on the corresponding ground-connected track 1 to maintain the stability of the entire chassis assembly 2.

[0046] The entire chassis layer relies on the power unit to provide power. Under the action of the power unit, the entire chassis assembly 2 can be driven forward or backward along the ground track 1. After being connected to the track trolley 4 on the rear side with the wire rope dragging mechanism, it can effectively provide traction for it, ensuring that the track trolley 4 can be passively pulled forward as needed, and the interior of the track trolley 4 is used to store the corresponding transferred materials.

[0047] Considering that the rail trolley 4 may move forward quickly due to inertia and collide with the chassis assembly 2 when the traction speed is too fast or there is a downhill situation, a corresponding buffer moving unit is set here to better ensure the buffering of the power of the rail trolley 4, and at the same time reduce the shaking caused by the collision, and effectively protect the rail trolley 4 and the chassis assembly 2. Specifically, the main function of the buffer stabilization unit is to absorb the impact energy of the rail trolley 4 when it collides. In the absorption process, the energy is mainly absorbed by the anti-collision guard plate 18 compressing each buffer spring 19 according to the external force. When the impact force is too large and cannot be completely absorbed by the strength of the buffer spring 19 alone, the buffer airbag 20 is used to achieve the purpose of secondary buffering and shock absorption; wherein, by controlling the corresponding valves on the intake pipe joint 21 and the exhaust pipe joint 22, the purpose of inflating or deflating the interior of the buffer airbag 20 can be achieved, and each buffer airbag 20 can be pre-filled with an appropriate amount of gas as needed, thereby achieving different buffering and shock absorption effects.

[0048] From the above, it can be seen that the rail-type electric traction equipment can rely on the drive unit and the wire rope traction mechanism to realize dual-power rail traction in the material transfer process, which can effectively ensure that the rail trolley 4 can move forward passively and stably, and ensure the rapid traction and transfer of materials; when the track is downhill or the brake stops, it can pre-control the traction wire rope 3 to release the rope and control the drive unit to continue moving, thereby extending the distance between the chassis assembly 2 and the rail trolley 4 in advance, providing sufficient buffer distance for the inertia buffering of the rail trolley 4, and reducing the impact force on the chassis assembly 2 due to inertia or excessive speed.

[0049] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. For technicians in this technical field, any replacement improvements or changes made to the implementation methods of the utility model fall within the protection scope of the utility model.

[0050] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A track-type electric towing device, comprising a chassis assembly arranged above a ground-connected track, a front traction wheel group and a rear transmission wheel group are respectively installed on the front and rear sides of the bottom of the chassis assembly, and the front traction wheel group and the rear transmission wheel group are both mounted on the corresponding ground-connected track, characterized in that: A power unit for driving the front traction wheel group is fixedly installed at the bottom of the middle section of the chassis assembly, a wire rope dragging mechanism is installed on the top of the chassis assembly, and a buffer stabilization unit is fixedly installed on the top of the chassis assembly at the rear side of the wire rope dragging mechanism. The rear end of the traction wire rope on the wire rope dragging mechanism passes through the buffer stabilization unit and is connected to the rail trolley towed at the rear side thereof.

2. A track-type electric dragging device according to claim 1, characterized in that: The front traction wheel group includes front wheel frames fixedly mounted on the inner and outer sides of the front part of the chassis assembly, a horizontally arranged front axle is mounted between the two front wheel frames, two ends of the front axle are movably passed through corresponding axial holes on the front wheel frames and are coaxially fixedly connected to a front wheel respectively, each of the front wheels is movably engaged with the outer side wall of the corresponding ground-connecting track through an annular wheel groove arranged on its outer side wall, and a toothed driven pulley for cooperating with the power unit is arranged in the middle of the front axle.

3. A track-type electric dragging device according to claim 2, characterized in that: The rear drive wheel group includes rear wheel frames fixedly mounted on the inner and outer sides of the rear part of the chassis assembly, and a horizontally arranged rear axle is installed between the two rear wheel frames. The two ends of the rear axle are movably passed through the corresponding axial holes on the rear wheel frames and are coaxially fixedly connected to a rear wheel respectively. Each of the rear wheels is movably clamped on the outer side wall of the corresponding ground-connecting track through an annular wheel groove arranged on its outer side wall.

4. The track-type electric dragging device according to claim 3, characterized in that: The power unit includes a motor frame fixedly mounted at the bottom of the middle section of the chassis assembly, a drive motor fixedly mounted at the bottom of the motor frame, a motor shaft of the drive motor coaxially connected to a toothed drive pulley, and the toothed drive pulley and the toothed driven pulley are connected via a toothed belt.

5. The track-type electric dragging device according to claim 4, characterized in that: The buffer stabilization unit includes a baffle stand fixedly installed on the rear side of the chassis assembly, an anti-collision guard plate is arranged at a spacing on the rear side of the baffle stand, and horizontally arranged buffer springs are respectively installed at the four corners of the anti-collision guard plate and the baffle stand, and both ends of each buffer spring are fixedly installed on the corresponding front side wall of the anti-collision guard plate and the rear side wall of the baffle stand.

6. The track-type electric dragging device according to claim 5, characterized in that: Buffer airbags are installed symmetrically and at intervals in the space surrounded by the four buffer springs. The front sides of the two buffer airbags are fixedly installed on the rear side wall of the baffle seat. An intake pipe joint and an exhaust pipe joint with valves are fixedly installed at intervals on the bottom of the two buffer airbags.

7. The track-type electric dragging device according to claim 6, characterized in that: The wire rope dragging mechanism includes a drum fixedly mounted on the top of the chassis assembly, a traction wire rope wound on the drum, the rear end of the traction wire rope moves through the through hole of the baffle stand and the through hole on the anti-collision guard plate respectively, and is detachably fixed to the front side of the rail trolley at the rear side, bearing seats are respectively provided on the inner and outer sides of the drum, the bottoms of the bearing seats are fixed on the top of the chassis assembly, the front and rear ends of the central axis of the drum move through the bearing holes of the bearing seats at corresponding positions and extend to the outside thereof, a traction motor is fixedly mounted on the bearing seat on the rear side of the drum, and the motor shaft of the traction motor is coaxially fixed to the central axis of the drum at the corresponding position.

8. The track-type electric dragging device according to claim 7, characterized in that: The rail trolley is an unpowered trolley and the four corners of the bottom are movably connected to the corresponding ground track through rail wheels.

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