CN111517152A - Low-voltage cable traction mechanism and traction equipment based on mechanism - Google Patents

Abstract

The invention discloses a low-voltage cable traction mechanism and traction equipment based on the same, comprising: the rubber sleeve is arranged outside the driving shaft and used for reducing extrusion stress formed when the cable is wound on the driving shaft, the section of the rubber sleeve is wavy, elastic blocks capable of elastically deforming are filled between the rubber sleeve and the driving shaft at intervals, when the cable is wound on the driving shaft, the elastic blocks are compressed to reduce the extrusion stress, the section of the rubber sleeve is wavy, and adjacent cables are not prone to mutual deviation when the cable is wound, so that a certain limiting effect is achieved; the traction wheel has a walking state and a fixed state, the traction wheel can roll and walk in the walking state, the stop plate extends out of the outer ring of the traction wheel and contacts with the ground to generate limitation in the fixed state, and the traction wheel is fixed. And the push rod is used for pushing the traction wheel to walk.

Description

Low-voltage cable traction mechanism and traction equipment based on mechanism

Technical Field

The invention relates to the technical field of cable traction devices, in particular to a low-voltage cable traction mechanism and traction equipment based on the same.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life. Installation requires special care since the cable is live.

The cable traction device can be used for traction and storage of cables, but in the prior art, the cable traction device is often a circular storage body with an I-shaped section, the cable traction device is easy to generate overstock when being wound on a middle winding shaft after being pulled, the cable inside is easy to deform due to extrusion, and the service life of the surface layer is shortened; the bottom of the cable traction mechanism is provided with a fixed bracket for fixing the cable traction mechanism, but the cable traction mechanism is difficult to carry; the cable traction mechanism can only wind cables with a single specification, a plurality of cable traction mechanisms are needed to wind different cables, the use cost is high, and the practical use is inconvenient.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a low-voltage cable traction mechanism and traction equipment based on the low-voltage cable traction mechanism.

In order to achieve the above object, the present invention employs a low-voltage cable pulling mechanism, including:

the two groups of traction wheels are used for connecting driving shafts of the traction wheels at two sides, grooves are arranged at the outer rings of the traction wheels, and stop plates capable of extending out of the outer rings of the traction wheels are arranged in the grooves;

the rubber sleeve is arranged outside the driving shaft and used for reducing extrusion stress formed when the cable is wound on the driving shaft, the section of the rubber sleeve is wavy, elastic blocks capable of elastically deforming are filled between the rubber sleeve and the driving shaft at intervals, and when the cable is wound on the driving shaft, the elastic blocks are compressed to reduce the extrusion stress;

the traction wheel has a walking state and a fixed state, when in the walking state, the stop plate is accommodated in the groove, the outer ring of the traction wheel keeps a round shape, the traction wheel can walk in a rolling manner, when in the fixed state, the stop plate extends out of the outer ring of the traction wheel and contacts with the ground to generate limitation, and the traction wheel is fixed;

carry out the baffle of separating when the different specification cables of drive shaft winding, the baffle passes through screw-thread fit connection in the outer lane department of drive shaft, and the baffle divides into different wire winding district with the drive shaft, and different wire winding districts can twine the cable of different specifications.

As the further optimization of above-mentioned scheme, the one end of recess is equipped with the outside opening of intercommunication traction wheel, and the opening supplies to end the position board and passes through, the bottom of ending the position board passes through articulated shaft activity hinge in the recess, ends to be equipped with between the one end that the articulated shaft was kept away from to the position board and the bottom of recess and to draw tightly the reset spring who ends the position board, ends the position board outstanding in the one end of recess an organic whole be equipped with can with the laminating board of traction wheel below ground laminating, the fixed surface of laminating board is equipped with the multiunit and is used for skid-proof rubber arch.

As a further optimization of the above scheme, the traction wheel is of a circular ring-shaped structure, a wheel disc is arranged in the middle of the traction wheel, the wheel disc and the traction wheel are connected through a plurality of rib plates, and the inner ring of the traction wheel is connected with a supporting rod which is used for abutting against the stop plate and enabling the end part of the stop plate to extend out of the outer part of the traction wheel through threaded fit.

According to the scheme, the clamping piece penetrates through the abutting rod movably, two groups of pin holes corresponding to the clamping piece are formed in the surface of the rib plate, the clamping piece is of a concave structure, one end of the clamping piece is connected with a limiting screw in a threaded fit mode, the other end of the clamping piece is clamped and limited in the corresponding pin hole, and a clamping piece spring which is used for tensioning the clamping piece and keeping the end portion of the clamping piece clamped in the corresponding pin hole is arranged between the clamping piece and the rib plate.

As a further optimization of the scheme, the outer diameter of the partition plate is smaller than that of the traction wheel, and at least three groups of partition plates are arranged.

As a further optimization of the scheme, the two ends of the driving shaft respectively and movably penetrate through the wheel discs at the two ends, one end of the driving shaft is fixedly welded with a handle, and the other end of the driving shaft is connected with a driving unit which can be separated from the end part of the driving shaft.

As a further optimization of the above scheme, the driving unit includes a motor and a rotating shaft connected to the motor in a transmission manner, the end of the rotating shaft is movably clamped at the end of the driving shaft, the rotating shaft is connected with the driving shaft in a transmission manner, a guide plate is fixedly welded at the outer ring of the motor, a guide rod is movably inserted into the guide plate, the end of the guide rod is fixedly welded on the surface of the wheel disc, and the guide plate is fixedly connected with the wheel disc through a tension spring.

As a further optimization of the above scheme, a clamping groove for clamping the rotating shaft is formed in the end portion of the driving shaft, a key groove is formed in the clamping groove, and a spline corresponding to the key groove in the clamping groove in the end portion of the driving shaft is integrally formed in the outer ring of the rotating shaft.

As the further optimization of the scheme, the two end parts of the driving shaft are respectively provided with the limiting unit, the limiting unit comprises a nut, and the nut is attached to the surface of the wheel disc and is connected to the end part of the driving shaft through thread matching.

A kind of traction equipment is disclosed, which comprises a traction table,

including low pressure cable drive mechanism, still include:

a push rod for promoting the traction wheel walking, the push rod is the font of character cut and establishes in traction wheel one side, and the both ends of push rod all are equipped with the lantern ring of being connected with drive shaft both ends, the lantern ring comprises two sets of swing joint's semi-ring structure, passes through the fix with screw between two sets of semi-ring structure, and lantern ring movable sleeve establishes on the drive shaft.

The low-voltage cable traction mechanism and the traction equipment based on the same have the following beneficial effects:

1. the low-voltage cable traction mechanism and the traction equipment based on the low-voltage cable traction mechanism are provided with the rubber sleeve which is arranged outside the driving shaft and used for reducing extrusion stress formed when the cable is wound on the driving shaft, the section of the rubber sleeve is wavy, elastic blocks capable of elastically deforming are filled between the rubber sleeve and the driving shaft at intervals, when the cable is wound on the driving shaft, the elastic blocks are compressed to reduce the extrusion stress, when the cable is pulled out, the elastic blocks can restore to the original state and keep the saturation of the rubber sleeve, the section of the rubber sleeve is wavy, adjacent cables are not prone to deviation when the cable is wound, and a certain limiting effect is achieved;

2. according to the low-voltage cable traction mechanism and the traction equipment based on the low-voltage cable traction mechanism, the traction wheel has a walking state and a fixed state, the stop plate is contained in the groove in the walking state, the outer ring of the traction wheel keeps a circular shape, the traction wheel can roll and walk, the stop plate extends out of the outer ring of the traction wheel and is in contact with the ground to generate limitation in the fixed state, the traction wheel is fixed, and the traction wheel can be conveniently moved and fixed when being changed between the walking state and the fixed state.

3. The low-voltage cable traction mechanism and the traction equipment based on the low-voltage cable traction mechanism are provided with the partition plates for separating the cables with different specifications when the driving shaft is wound, the partition plates are connected to the outer ring of the driving shaft in a threaded fit mode, the partition plates divide the driving shaft into different winding areas, the cables with different specifications can be wound in the different winding areas, the existing cable traction mechanism only used for winding the cables with single specification is replaced, the low-voltage cable traction mechanism can be used for simultaneously winding the cables with different specifications, the cables with different specifications are separated through the partition plates, the cables are not disordered, and the low-voltage cable traction mechanism is convenient to use practically.

4. According to the low-voltage cable traction mechanism and the traction equipment based on the low-voltage cable traction mechanism, two ends of the driving shaft respectively and movably penetrate through the wheel discs at the two ends, the handle is fixedly welded at one end of the driving shaft, the driving unit which can be separated from the end portion of the driving shaft is connected at the other end of the driving shaft, the handle is convenient for manually controlling the driving shaft to rotate to drag the cable, the driving unit is convenient for automatically controlling the driving shaft to rotate to drag the cable, the low-voltage cable traction mechanism can be used according to actual requirements, the practicability is high, and the driving unit.

There have been disclosed in detail certain embodiments of the invention with reference to the following description and drawings, and it is to be understood that the embodiments of the invention are not limited thereby, but are intended to cover within the spirit and scope of the appended claims, many changes, modifications, and equivalents.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 5 is a side view of the present invention;

FIG. 6 is a front view of the present invention;

FIG. 7 is a schematic structural view of the stop plate of the present invention when it is received in the groove;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 6 in accordance with the present invention;

FIG. 9 is a cross-sectional view taken at B-B of FIG. 6 in accordance with the present invention;

fig. 10 is an enlarged view of the structure at C in fig. 9 according to the present invention.

In the figure: the device comprises a traction wheel 1, a groove 2, a partition plate 3, a rubber sleeve 4, a stop plate 5, a motor 6, a wheel disc 7, a rib plate 8, a driving shaft 9, a nut 10, a handle 11, a pushing rod 12, a clamping piece 13, a clamping piece spring 14, a pin hole 15, a limiting screw 16, a rotating shaft 17, a guide rod 18, a guide plate 19, a tension spring 20, a hinged shaft 21, a return spring 22, an elastic block 23, an attaching plate 24, a rubber bulge 25, a push rod 26 and a lantern ring 27.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

It should be noted that when an element is referred to as being "disposed on," or provided with "another element, it can be directly on the other element or intervening elements may also be present, when an element is referred to as being" connected, "or coupled to another element, it can be directly on the other element or intervening elements may be present, and" fixedly coupled "means that the element is fixedly coupled in many ways, which are not intended to be within the scope of the present disclosure, the terms" vertical, "" horizontal, "" left, "" right, "and the like are used herein for illustrative purposes only and are not intended to be a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items;

referring to the attached drawings 1-10 of the specification, the invention provides a technical scheme: a low-voltage cable pulling mechanism comprising:

the two groups of traction wheels 1 are used for connecting driving shafts 9 of the traction wheels 1 at two sides, grooves 2 are arranged at the outer rings of the traction wheels 1, and stop plates 5 capable of extending out of the outer rings of the traction wheels 1 are arranged in the grooves 2;

the rubber sleeve 4 is arranged outside the driving shaft 9 and used for reducing extrusion stress formed when a cable is wound on the driving shaft 9, the section of the rubber sleeve 4 is wavy, elastic blocks 23 capable of elastically deforming are filled between the rubber sleeve 4 and the driving shaft 9 at intervals, and when the cable is wound on the driving shaft 9, the elastic blocks 23 are compressed to reduce the extrusion stress;

the traction wheel 1 has a walking state and a fixed state, when in the walking state, the stop plate 5 is accommodated in the groove 2, the outer ring of the traction wheel 1 keeps circular, the traction wheel 1 can roll and walk, when in the fixed state, the stop plate 5 extends out of the outer ring of the traction wheel 1 and contacts with the ground to generate limitation, and the traction wheel 1 is fixed;

carry out divided baffle 3 when the different specification cables of drive shaft 9 winding, baffle 3 passes through screw-thread fit connection in the outer lane department of drive shaft 9, and baffle 3 divides into different wire winding district with drive shaft 9, and different wire winding districts can twine the cable of different specifications.

In this embodiment, an opening communicating with the outside of the traction wheel 1 is formed at one end of the groove 2, the opening is used for the stop plate 5 to pass through, the bottom of the stop plate 5 is movably hinged in the groove 2 through a hinge shaft 21, a return spring 22 capable of tensioning the stop plate 5 is arranged between one end of the stop plate 5 far away from the hinge shaft 21 and the bottom of the groove 2, the return spring 22 plays a real-time tensioning role on the stop plate 5, in a natural state, the stop plate 5 is located inside the groove 2, when the stop plate 5 is abutted by the abutting rod 12, the return spring 22 is in a stretching state, the size of the groove 2 is suitable for the rotation of the stop plate 5, the size of the opening ensures that the end of the stop plate 5 can normally enter and exit, as shown in fig. 7, the structural schematic diagram of the stop plate of the present invention when being accommodated in the.

As shown in the figure, the position stopping plate 5 protrudes from one end of the groove 2 and is integrally provided with a laminating plate 24 which can be laminated with the ground below the traction wheel 1, the position stopping plate 5 is contacted with the ground through the laminating plate 24 when extending out of the traction wheel 1, the traction wheel 1 is contacted with the ground through four groups of laminating plates 24 when standing, the stability is higher, the surface fixing of the laminating plate 24 is provided with a plurality of groups of rubber bulges 25 for skid resistance, the friction force between the laminating plate 24 and the ground is increased, and the stability when the traction wheel 1 is fixed is increased.

Wherein, traction wheel 1 is the ring form structure, and the intermediate position of traction wheel 1 is equipped with rim plate 7, connects through a plurality of groups of floor 8 between rim plate 7 and the traction wheel 1, and floor 8 plays the effect of strengthening connection traction wheel 1 and rim plate 7, and the inner circle department of traction wheel 1 is connected with through screw-thread fit and is used for contradicting and ends a board 5 and make and end 5 tip of a board and stretch out the outside pole 12 that supports of traction wheel 1.

Clamping pieces 13 are movably penetrated on the abutting rod 12, two groups of pin holes 15 corresponding to the clamping pieces 13 are arranged on the surface of the ribbed plate 8, the clamping pieces 13 are in a concave structure, one end of each clamping piece 13 is connected with a limiting screw 16 in a threaded fit mode, the other end of each clamping piece 13 is clamped and limited in the corresponding pin hole 15, a clamping piece spring 14 which tensions the clamping pieces 13 and keeps the end parts of the clamping pieces 13 clamped in the corresponding pin holes 15 is arranged between the clamping pieces 13 and the ribbed plate 8, the length of one end of each clamping piece 13 is larger than that of the other end of each clamping piece 13, when the short end of each clamping piece 13 is pulled out of the corresponding pin hole 15, the limiting screw 16 at the other end of each clamping piece 13 is attached to the surface of the abutting rod 12, the limiting screw 16 prevents the clamping pieces 13 from falling off, the pulling piece spring 14 plays a tensioning role on the clamping pieces 13, so that the clamping pieces 13 can be well clamped, the clamping piece 13 also prevents the abutting rod 12 from falling off from the traction wheel 1, the abutting rod 12 movably penetrates through the inner ring of the traction wheel 1 and extends into the groove 2, the clamping piece 13 penetrates through the abutting rod 12 and then is installed with the limiting screw 16, and then the clamping piece spring 14 is welded.

It should be noted that, the external diameter of baffle 3 is less than the external diameter of traction wheel 1, has guaranteed that traction wheel 1 can normally walk when the walking state, can not cause and block, and baffle 3 is provided with three groups at least, and three groups of baffles 3 can be separated into two regions on the drive shaft 9 for pull and use two kinds of different specification's cable.

In this embodiment, the both ends of drive shaft 9 activity respectively pass the rim plate 7 at both ends, and the fixed welding of one end of drive shaft 9 has handle 11, and handle 11 makes things convenient for the manual control when drive shaft 9 rotates, and the other end is connected with the drive unit that can with the tip separation of drive shaft 9, and the drive unit makes things convenient for the automatic control when drive shaft 9 rotates.

As shown in fig. 4, the driving unit includes a motor 6 and a rotating shaft 17 connected to the motor 6 in a transmission manner, the end of the rotating shaft 17 is movably clamped at the end of the driving shaft 9, the rotating shaft 17 is connected to the driving shaft 9 in a transmission manner, a guide plate 19 is fixedly welded at the outer ring of the motor 6, guide rods 18 are movably inserted and combined on the guide plate 19, the end of each guide rod 18 is fixedly welded on the surface of the wheel disc 7, the guide plate 19 is fixedly connected to the wheel disc 7 through a tension spring 20, the tension spring 20 tensions the guide plate 19 to play a basic stabilizing role, four sets of guide rods 18 are arranged on the guide plate 19, the guiding capability is strong, and the motor 6 moves straightly and straightly in the process of separating and connecting with the driving shaft 9 without.

The end portion of the driving shaft 9 is provided with a clamping groove for clamping the rotating shaft 17, a key groove is formed in the clamping groove, the outer ring of the rotating shaft 17 is integrally provided with a spline corresponding to the key groove in the end portion of the driving shaft 9, when the rotating shaft 17 is clamped in the clamping groove, the spline is clamped in the corresponding key groove, so that when the rotating shaft 17 rotates, the driving shaft 9 is driven to rotate simultaneously through the spline to transmit corresponding force.

All be equipped with the restriction unit at the both ends tip of drive shaft 9, the restriction unit includes nut 10, nut 10 laminates at the surface of rim plate 7 and connects the tip at drive shaft 9 through screw-thread fit, nut 10 has avoided drive shaft 9 to drop out rim plate 7 in the middle of traction wheel 1, and the downthehole wall that supplies drive shaft 9 to pass in the middle of the rim plate 7 activity is inlayed and is had the multiunit ball, ball and the contact of drive shaft 9 surface, reduce the frictional resistance when drive shaft 9 rotates, it is comparatively laborsaving when using 11 manual drive shafts 9 of handle to rotate.

A pulling device comprising a low voltage cable pulling mechanism, further comprising:

a push rod 26 for promoting the walking of traction wheel 1, push rod 26 are the font of character cut in bas-relief and establish in traction wheel 1 one side, and the both ends of push rod 26 all are equipped with the lantern ring 27 of being connected with drive shaft 9 both ends, lantern ring 27 comprises two sets of activity articulated semi-ring structures, through the fix with screw between two sets of semi-ring structures, and this just makes lantern ring 27 can open the cover and establish at drive shaft 9 both ends, then fixes lantern ring 27 for push rod 26 connects on traction wheel 1, and lantern ring 27 movable sleeve establishes on drive shaft 9, and push rod 26 can drive the better walking of traction wheel 1.

The embodiment provides a low-voltage cable traction mechanism and traction equipment based on the mechanism, and the working process is as follows:

when the traction mechanism is moved, the end part of the clamping piece 13 is clamped in the pin hole 15 close to one end of the wheel disc 7, at the moment, the resisting rod 12 is moved out of the groove 2, the limiting function of the stop plate 5 is lost and the stop plate is pulled into the groove 2 through the elastic recovery function of the return spring 22, the surface of the traction wheel 1 keeps a round shape, the traction wheel 1 can be directly pushed to move on the ground, and the movement is convenient;

when fixed drive mechanism, 13 tip block of fastener are in the pinhole 15 that is close to 1 one end of traction wheel, at this moment, support during pole 12 stretches into recess 2, support pole 12 conflict and stop board 5 and use articulated shaft 21 to rotate as the axle, stop 5 tip of board and stretch out traction wheel 1 outsidely from the recess 2 opening part, stop board 5 and contradict on ground, fix traction wheel 1, and stop board 5 and be provided with eight groups at least, make things convenient for the real-time fixed of traction wheel 1.

When the driving shaft 9 is rotated by using the handle 11, the motor 6 is moved to one side far away from the traction wheel 1, the guide plate 19 is a plate made of a magnetic material, the guide rod 18 can be used for adsorbing and fixing the guide plate 19, when the guide plate 19 moves to the end part of the guide rod 18, the rotating shaft 17 on the motor 6 is separated from the end part of the driving shaft 9, and at the moment, the driving shaft 9 can be driven to normally rotate by using the handle 11;

when the driving shaft 9 automatically rotates, the guide plate 19 is moved to the middle position of the guide rod 18 to be adsorbed and fixed, the rotating shaft 17 on the motor 6 is clamped into the end part of the driving shaft 9 to be transmitted, and at the moment, the motor 6 can drive the driving shaft 9 to rotate through the rotating shaft 17.

It should be understood that the present invention is not limited to the particular embodiments described herein, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A low-voltage cable pulling mechanism, comprising:

the two groups of traction wheels are used for connecting driving shafts of the traction wheels at two sides, grooves are arranged at the outer rings of the traction wheels, and stop plates capable of extending out of the outer rings of the traction wheels are arranged in the grooves;

the rubber sleeve is arranged outside the driving shaft and used for reducing extrusion stress formed when the cable is wound on the driving shaft, the section of the rubber sleeve is wavy, elastic blocks capable of elastically deforming are filled between the rubber sleeve and the driving shaft at intervals, and when the cable is wound on the driving shaft, the elastic blocks are compressed to reduce the extrusion stress;

the traction wheel has a walking state and a fixed state, when in the walking state, the stop plate is accommodated in the groove, the outer ring of the traction wheel keeps a round shape, the traction wheel can walk in a rolling manner, when in the fixed state, the stop plate extends out of the outer ring of the traction wheel and contacts with the ground to generate limitation, and the traction wheel is fixed;

carry out the baffle of separating when the different specification cables of drive shaft winding, the baffle passes through screw-thread fit connection in the outer lane department of drive shaft, and the baffle divides into different wire winding district with the drive shaft, and different wire winding districts can twine the cable of different specifications.

2. A low voltage cable pulling mechanism as claimed in claim 1, wherein: the one end of recess is equipped with the outside opening of intercommunication traction wheel, and the opening supplies to end the board and passes through, end the bottom of board and pass through articulated shaft activity hinge in the recess, end the board and keep away from being equipped with the reset spring that can draw tightly and end the board between the one end of articulated shaft and the bottom of recess, end the board outstanding in the one end of recess an organic whole be equipped with can with the laminating board of traction wheel below ground laminating, the fixed surface of laminating board is equipped with the multiunit and is used for skid-proof rubber arch.

3. A low voltage cable pulling mechanism as claimed in claim 2, wherein: the traction wheel is of a circular ring-shaped structure, a wheel disc is arranged in the middle of the traction wheel, the wheel disc and the traction wheel are connected through a plurality of rib plates, and the inner ring of the traction wheel is connected with a supporting rod which is used for abutting against the stop plate and enabling the end part of the stop plate to extend out of the traction wheel through threaded fit.

4. A low voltage cable pulling mechanism as claimed in claim 3, wherein: the clamping piece is movably penetrated on the abutting rod, two groups of pin holes corresponding to the clamping piece are formed in the surface of the rib plate, the clamping piece is of a concave structure, one end of the clamping piece is connected with a limiting screw through threaded fit, the other end of the clamping piece is clamped and limited in the corresponding pin hole, and a clamping piece spring which is used for tensioning the clamping piece and keeping the end part of the clamping piece clamped in the corresponding pin hole is arranged between the clamping piece and the rib plate.

5. A low voltage cable pulling mechanism as claimed in claim 4, wherein: the outer diameter of the partition plate is smaller than that of the traction wheel, and at least three groups of partition plates are arranged.

6. A low voltage cable pulling mechanism as claimed in claim 5, wherein: the two ends of the driving shaft respectively and movably penetrate through the wheel discs at the two ends, one end of the driving shaft is fixedly welded with a handle, and the other end of the driving shaft is connected with a driving unit which can be separated from the end part of the driving shaft.

7. A low voltage cable pulling mechanism as claimed in claim 6, wherein: the drive unit comprises a motor and a rotating shaft connected to the motor in a transmission mode, the end portion of the rotating shaft is movably clamped at the end portion of the driving shaft in a clamping mode, the rotating shaft is connected with the driving shaft in a transmission mode, a guide plate is fixedly welded to the outer ring of the motor, a guide rod is movably inserted into the guide plate, the end portion of the guide rod is fixedly welded to the surface of the wheel disc, and the guide plate is fixedly connected with the wheel disc through a tension spring.

8. A low voltage cable pulling mechanism as claimed in claim 7, wherein: the end part of the driving shaft is provided with a clamping groove for clamping the rotating shaft, a key groove is formed in the clamping groove, and a spline corresponding to the key groove in the clamping groove at the end part of the driving shaft is integrally arranged at the outer ring of the rotating shaft.

9. A low voltage cable pulling mechanism as claimed in claim 8, wherein: the both ends tip of drive shaft all is equipped with the restriction unit, and the restriction unit includes the nut, and the nut laminating is on the surface of rim plate and through the tip of screw-thread fit connection at the drive shaft.

10. A pulling device, characterized by:

including the low voltage cable pulling mechanism of any one of claims 1-9, further comprising:

a push rod for promoting the traction wheel walking, the push rod is the font of character cut and establishes in traction wheel one side, and the both ends of push rod all are equipped with the lantern ring of being connected with drive shaft both ends, the lantern ring comprises two sets of swing joint's semi-ring structure, passes through the fix with screw between two sets of semi-ring structure, and lantern ring movable sleeve establishes on the drive shaft.

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