CN212712099U

CN212712099U - Cable traction machine

Info

Publication number: CN212712099U
Application number: CN202021303729.3U
Authority: CN
Inventors: 唐昱; 王蔚; 王东
Original assignee: Sichuan Zhongdi Electric Power Engineering Co ltd
Current assignee: Sichuan Zhongdi Electric Power Engineering Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-03-16
Anticipated expiration: 2030-07-06

Abstract

The utility model relates to a cable pulling machine, which comprises a support table, a fixed column is fixed on the support table, a U-shaped plate body is fixed on the upper end of the fixed column, a screw rod is rotatably installed on the horizontal part of the U-shaped plate body, and two screw rods are arranged on the screw rod. The two sections of the external thread of the screw are respectively provided with a first upper movable block and a first lower movable block, a guide rod is fixed on the horizontal part of the U-shaped plate body, and a second guide rod is arranged on the guide rod. The upper movable block and the second lower movable block are provided with an upper rotating rod between the second upper movable block and the first upper movable block, and an upper pressing wheel is fixedly sleeved on the upper rotating rod. A lower rotating rod is arranged between the lower movable blocks, a lower pressing wheel is fixedly sleeved on the lower rotating rod, and a first driving component is jointly provided on the U-shaped plate body and the screw rod. The cable pulling machine in the utility model is convenient to adjust the distance between the two pressing wheels for pressing the cable, so that the cable pulling machine can effectively pull the thicker cable.

Description

Cable traction machine

Technical Field

The utility model belongs to the technical field of the electric power construction technique and specifically relates to a cable tractor is related to.

Background

The cable tractor is a novel wire and cable construction machine developed on the basis of a multifunctional take-up and pay-off machine, has the characteristics of small volume and flexible and convenient use, is more suitable for cable construction in narrow road sections, particularly cities, has the same traction function as the multifunctional take-up and pay-off machine, and can be used for drawing, unfolding, tightening, standing and the like wires and cables.

The current chinese patent that bulletin number is CN206915486U discloses a cable traction machine, including sliding tray, base and gear, the sliding tray is equipped with to the brace table upside, and the sliding tray upside is equipped with the pulley, hollow pull rod passes through connecting axle and pulley fixed connection, and is equipped with the conveying box on the left of the hollow pull rod, the connecting axle downside is equipped with the swing span and links to each other with the axis of rotation is fixed, and the axis of rotation passes through the support frame and links to each other with the base, and the right side is equipped with the handrail in the middle of the baffle, the baffle downside is equipped with the locking wheel, and is equipped with fixed buckle on the locking wheel, install the extrusion wheel in the conveying box, and the cable passes the back through hollow pull rod, receives. This cable traction machine is equipped with conveyer belt and handle, meets emergency and can wave the handle with the hand and carry out the traction cable, can effectual improvement cable draw difficult situation like this.

However, the above prior art solutions have the following drawbacks: two extrusion wheels are arranged in the conveying box, when the cable tractor is used, the two extrusion wheels are matched and tightly support the cable, so that the cable tractor can complete cable traction work, but the distance between the two pressing wheels is difficult to adjust, and the cable is divided into different thicknesses, so that the cable tractor is inconvenient to effectively pull thick cables.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a cable tractor, this cable tractor is convenient for adjust two distances of supporting between the pinch roller that are used for supporting tight cable to this is convenient for this cable tractor effectively pulls thicker cable.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a cable tractor comprises a supporting table, wherein a fixed rod and a fixed column are fixed on the supporting table, a cable frame is rotatably mounted on the fixed rod, a U-shaped plate body is fixed at the upper end of the fixed column, a screw rod is rotatably mounted on the horizontal part of the U-shaped plate body, two sections of external threads with opposite rotation directions and equal thread pitches are arranged on the screw rod, a first upper movable block and a first lower movable block are respectively arranged on the two sections of external threads of the screw rod, the screw rod penetrates through the first upper movable block and the first lower movable block and is in threaded connection with the first upper movable block and the first lower movable block, a guide rod arranged in parallel with the screw rod is fixed on the horizontal part of the U-shaped plate body, a second upper movable block and a second lower movable block are arranged on the guide rod, the guide rod penetrates through the second upper movable block and the second lower movable block and is in sliding fit with the upper movable block and the lower movable block, go up the both ends of rotating the pole respectively with the second on the movable block with the first movable block rotate be connected, go up on the rotating the pole fixed cover be equipped with to support the pinch roller, be provided with down the rotating rod under the second between movable block and the first movable block, the both ends of rotating the pole down rotate with second under movable block and first movable block respectively and be connected, fixed cover is equipped with down to the pinch roller down on the rotating rod down, be provided with jointly on U-shaped plate body and the screw rod and order about screw rod pivoted drive assembly.

Through adopting above-mentioned technical scheme, when the cable thickness of coiling is different on the cable frame, for convenient go up to support the pinch roller and support the pinch roller mating reaction down and support tightly the cable of different thicknesses, the staff only need order about the screw rod through first drive assembly and rotate, because be equipped with two sections external screw threads that revolve to opposite, the pitch is equal on the screw rod, the screw rod runs through first last movable block and first movable block down and with both equal threaded connection, thereby make first last movable block and first movable block be close to each other or keep away from down, it satisfies the cable demand of different thicknesses to support the pinch roller and support the distance between the pinch roller down to go up to be convenient for support the pinch roller and support the pinch roller mating reaction down and support tightly the cable, be favorable to this cable tractor to effectively pull thick cable.

The present invention may be further configured in a preferred embodiment as: the lower end of the screw penetrates through the horizontal part of the U-shaped plate body and is connected with the horizontal part in a rotating mode, and the first driving assembly comprises a lower motor fixed to the bottom face of the horizontal part of the U-shaped plate body, a lower driving gear fixed to the end portion of an output shaft of the lower motor and a lower driven gear fixedly sleeved on the screw and meshed with the lower driving gear.

Through adopting above-mentioned technical scheme, when needs were mediated last to the pinch roller and the distance between the pinch roller down, the staff only need open lower motor, lower motor drives the lower driving gear rotation rather than the output shaft is fixed after the work to this makes and rotates with lower driven gear of lower driving gear meshing, thereby makes and rotates with the fixed screw rod of driven gear down, so that make and screw rod threaded connection's first movable block and first movable block be close to each other or keep away from down, and make last pinch roller and the distance between the pinch roller down adjust.

The present invention may be further configured in a preferred embodiment as: limiting plates are fixed at two ends of the U-shaped plate body, the limiting plates are arranged in parallel with the horizontal portion of the U-shaped plate body, the upper end of the screw is rotatably connected with the bottom surface of the limiting plate close to one side of the screw, and the upper end of the guide rod is fixed with the bottom surface of the limiting plate close to one side of the guide rod.

Through adopting above-mentioned technical scheme, through setting up the limiting plate to this has all played good limited effect to screw rod and guide bar, has avoided the screw rod to take place the probability of rocking rotating the in-process, has improved the stability of movable block at the in-process that reciprocates under movable block and the second on first movable block, the second.

The present invention may be further configured in a preferred embodiment as: a first limit component is arranged between the first upper movable block and the first lower movable block, the first limit component comprises a first upper threaded rod fixed with the side wall of the first upper movable block close to one side of the second upper movable block, a first upper limit block arranged on the first upper threaded rod, a first lower threaded rod fixed with the side wall of the first lower movable block close to one side of the second lower movable block and a first lower limit block arranged on the first lower threaded rod, the first upper threaded rod penetrates through the first upper limiting block and is in clearance fit with the first upper limiting block, first upper nuts which are in threaded connection with the first upper threaded rod are arranged on the first upper threaded rods on the two sides of the first upper limiting block, the first lower threaded rods penetrate through the first lower limiting blocks and are in clearance fit with the first lower limiting blocks, and first lower screw caps in threaded connection with the first lower threaded rods are arranged on the first lower threaded rods on the two sides of the first lower limiting blocks;

a second limiting component is arranged between the second upper movable block and the second lower movable block, the second limiting component comprises a second upper threaded rod fixed with the side wall of the second upper movable block close to one side of the first upper movable block, a second upper limiting block arranged on the second upper threaded rod, a second lower threaded rod fixed with the side wall of the second lower movable block close to one side of the first lower movable block and a second lower limiting block arranged on the second lower threaded rod, the second upper threaded rod penetrates through the second upper limiting block and is in clearance fit with the second upper limiting block, second upper nuts which are in threaded connection with the second upper threaded rod are arranged on the second upper threaded rods on the two sides of the second upper limiting block, the second lower threaded rod penetrates through the second lower limiting block and is in clearance fit with the second lower limiting block, and second lower nuts in threaded connection with the second lower threaded rod are arranged on the second lower threaded rods on two sides of the second lower limiting block.

By adopting the technical scheme, through arranging the first limiting component and the second limiting component, when the diameter of a cable to be pulled is larger, the contact area between the arc-shaped surface at the bottom of the upper pressing wheel and the arc-shaped surface at the top of the cable to be pulled and the contact area between the arc-shaped surface at the top of the lower pressing wheel and the arc-shaped surface at the bottom of the cable to be pulled are smaller, in order to enhance the stability of the cable tractor in pulling the cable with larger diameter, a worker only needs to screw the first upper nut and the second upper nut so as to adjust the distance between the first upper limiting block and the second upper limiting block, and can adjust the distance between the first lower limiting block and the second lower limiting block by screwing the second lower nut and the second lower nut until the distance between the first upper limiting block and the second upper limiting block and the distance between the first lower limiting block and the second lower limiting block are matched with the cable with larger diameter, stopping adjustment of the first and second stop assemblies to thereby allow the cable pulling machine to accommodate larger diameter cable pulling requirements.

The present invention may be further configured in a preferred embodiment as: the upper surface of the first lower limiting block is provided with a first inserting groove in inserting fit with the first upper limiting block, and the upper surface of the second lower limiting block is provided with a second inserting groove in inserting fit with the second upper limiting block.

By adopting the technical scheme, when the diameter of the cable between the upper pressing wheel and the lower pressing wheel is small, the first upper limiting block is in inserting fit with the first inserting groove, and the second lower limiting block is in inserting fit with the second inserting groove, so that the situation that the cable is difficult to tightly abut against the upper pressing wheel and the lower pressing wheel due to the mutual obstruction between the first upper limiting block and the first lower limiting block or between the second upper limiting block and the second lower limiting block is avoided.

The present invention may be further configured in a preferred embodiment as: first chamfers are all seted up on the bottom surface of first last spacing piece and the crossing arris between its four lateral walls, second chamfer is all seted up on the bottom surface of second lower spacing piece and the crossing arris between its four lateral walls.

By adopting the technical scheme, the lower end of the first upper limiting block is provided with the first chamfer, so that the difficulty of inserting the first upper limiting block into the first inserting groove is reduced; through set up the second chamfer at spacing piece lower extreme under the second to this degree of difficulty that spacing piece inserted in the second inserting groove under having reduced the second.

The present invention may be further configured in a preferred embodiment as: the first lower movable block is provided with a second driving assembly, and the second driving assembly comprises an upper motor fixed on the bottom surface of the first lower movable block, an upper driving gear fixed on the end part of an output shaft of the upper motor and an upper driven gear which is fixedly sleeved on the lower rotating rod and is meshed with the upper driving gear.

Through adopting above-mentioned technical scheme, using this cable traction machine to pull cable, and go up to the pinch roller and support the pinch roller cooperation down and support the cable of different thicknesses tight back, the staff only needs to open the motor, go up the motor and drive the driving gear rotation after the work, go up the driving gear and drive rather than the last driven gear rotation of meshing to this makes the lower rotating rod fixed with last driven gear rotate, thereby makes down to support the pinch roller and follow the synchronous rotation of lower rotating rod, so that to support the pinch roller and support the cable that the pinch roller supported tightly down to pull by last.

The present invention may be further configured in a preferred embodiment as: an upper annular groove is formed in the position, close to the middle of the upper pressing wheel, of the arc-shaped surface of the upper pressing wheel, and an upper annular rubber sheet is embedded in the upper annular groove; the arc surface of the lower pressing wheel is provided with a lower annular groove at a position close to the middle part of the lower pressing wheel, and a lower annular rubber sheet is embedded in the lower annular groove.

Through adopting above-mentioned technical scheme, go up the annular rubber piece and all adopt rubber materials to make with lower annular rubber piece, through setting up annular rubber piece and lower annular rubber piece to this makes the arc surface at cable top and last to support the pinch roller and the arc surface of cable bottom and support down to have great frictional force between the pinch roller, thereby has strengthened to support the pinch roller and support down pinch roller cooperation and support the stability of tight cable in-process on.

To sum up, the utility model discloses a following at least one useful technological effect:

the utility model discloses in, when the cable thickness of coiling on the cable frame is different, for convenient upper pressure wheel and lower pressure wheel combined action and support the cable of different thicknesses tightly, the staff only need drive the screw rod through first drive assembly and rotate, because be equipped with two sections external screw threads that revolve to opposite, the pitch is equal on the screw rod, the screw rod runs through first upper movable block and first lower movable block and with both equal threaded connection, so that first upper movable block and first lower movable block are close to each other or keep away from, the distance between pressure wheel and the lower pressure wheel satisfies the cable demand of different thicknesses, thereby be convenient for upper pressure wheel and lower pressure wheel combined action and support the cable tightly, be favorable to this cable tractor to effectively pull thicker cable;

when the utility model needs to adjust the distance between the upper pressing wheel and the lower pressing wheel, the worker only needs to open the lower motor, the lower motor drives the lower driving gear fixed with the output shaft of the lower motor to rotate after working, so that the lower driven gear meshed with the lower driving gear rotates, and the screw fixed with the lower driven gear rotates, so that the first upper movable block and the first lower movable block which are in threaded connection with the screw are close to or far away from each other, and the distance between the upper pressing wheel and the lower pressing wheel can be adjusted;

the utility model discloses using this cable traction machine traction cable, and go up to the pinch roller and support the pinch roller cooperation down and support the tight back with the cable of different thicknesses, the staff only needs open the motor, go up the motor and drive the driving gear rotation after the work, go up the driving gear and drive rather than the last driven gear rotation of meshing, make with this and rotate with the lower transfer line that last driven gear is fixed, thereby make down to the pinch roller and follow down transfer line synchronous rotation, so that to support the pinch roller and support the tight cable of pinch roller down to pull by last.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a schematic view of a partial structure in the present invention.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 2.

Reference numerals: 1. a support table; 11. a universal wheel; 12. a handrail; 13. a cable rack; 14. fixing a column; 15. fixing the rod; 2. a U-shaped plate body; 21. a screw; 211. a first upper movable block; 212. a first lower movable block; 22. a guide bar; 221. a second upper movable block; 222. a second lower movable block; 23. a limiting plate; 3. rotating the rotating rod upwards; 31. an upper pressing wheel; 311. an upper annular groove; 3111. an upper annular rubber sheet; 4. rotating the rod downwards; 41. pressing wheels are pressed downwards; 411. a lower annular groove; 4111. a lower annular rubber sheet; 5. a first drive assembly; 51. a lower motor; 52. a lower driving gear; 53. a lower driven gear; 6. a second drive assembly; 61. an upper motor; 62. an upper drive gear; 63. an upper driven gear; 7. a first limit component; 71. a first upper threaded rod; 711. a first upper nut; 72. a first upper limiting block; 721. a first chamfer; 73. a first lower threaded rod; 731. a first lower nut; 74. a first lower limiting block; 741. a first insertion groove; 8. a second limiting component; 81. a second upper threaded rod; 811. a second upper nut; 82. a second upper limit block; 821. a second chamfer; 83. a second lower threaded rod; 831. a second lower nut; 84. a second lower limit block; 841. a second insertion groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a cable tractor, including brace table 1, brace table 1 is the rectangle platelike structure that the level set up, and brace table 1's bottom surface is fixed with universal wheel 11, and brace table 1's last fixed surface has handrail 12 to this is convenient for the staff to push away this cable tractor to required position.

Referring to fig. 1, a fixing rod 15 and a fixing column 14 are further fixed on the upper surface of the supporting table 1, the fixing rod 15 is a vertically arranged rectangular rod-shaped structure, and the cable rack 13 is rotatably mounted on the fixing rod 15. The cable holder 13 is a circular holder structure, and the axial direction of the cable holder is perpendicular to the length direction of the fixing rod 15, and is used for winding the cable. The fixing column 14 is a rectangular prism-shaped structure which is vertically arranged, and the upper end of the fixing column 14 is provided with a U-shaped plate body 2. The U-shaped plate body 2 is a plate-shaped structure with a U-shaped cross section, the bottom surface of the horizontal part of the U-shaped plate body 2 is fixed with the upper end of the fixed column 14, and two vertical parts of the U-shaped plate body 2 vertically extend upwards.

Referring to fig. 2, a screw 21 and a guide rod 22 are arranged on the horizontal portion of the U-shaped plate body 2, the axis of the screw 21 is vertical, the lower end of the screw 21 penetrates through the horizontal portion of the U-shaped plate body 2 and is rotatably connected with the horizontal portion, and two sections of external threads with opposite rotation directions and equal thread pitches are arranged on the screw 21. The guide rod 22 is a round rod-shaped structure, the axis of the guide rod is vertical, and the lower end of the guide rod 22 is fixed with the upper surface of the horizontal part of the U-shaped plate body 2.

Referring to fig. 2, a first upper movable block 211 and a first lower movable block 212 are disposed on the screw 21, both the first upper movable block 211 and the first lower movable block 212 are rectangular block structures, the first upper movable block 211 and the first lower movable block 212 are disposed on two sections of external threads of the screw 21, and the screw 21 penetrates through the first upper movable block 211 and the first lower movable block 212 and is in threaded connection with both the first upper movable block 211 and the first lower movable block 212. The guide rod 22 is provided with a second upper movable block 221 and a second lower movable block 222, the second upper movable block 221 and the second lower movable block 222 are both rectangular block-shaped structures, the position of the second upper movable block 221 corresponds to the position of the first upper movable block 211, the position of the second lower movable block 222 corresponds to the position of the first lower movable block 212, and the guide rod 22 penetrates through the second upper movable block 221 and the second lower movable block 222 and is in sliding fit with the two.

Referring to fig. 2, an upper rotating rod 3 is disposed between the second upper movable block 221 and the first upper movable block 211, the upper rotating rod 3 is a round rod-shaped structure, an axis of the upper rotating rod 3 is perpendicular to and intersects with an axis of the screw 21, and two ends of the upper rotating rod 3 are respectively connected to a side wall of the first upper movable block 211 close to one side of the second upper movable block 221 and a side wall of the second upper movable block 221 close to one side of the first upper movable block 211 in a rotating manner. The upper rotating rod 3 is fixedly sleeved with an upper pressing wheel 31, the cross section of the upper pressing wheel 31 is circular, the axis of the upper pressing wheel 31 coincides with the axis of the upper rotating rod 3, and the area of the cross section of the upper pressing wheel 31 gradually decreases from the two ends of the upper pressing wheel 31 to the middle.

Referring to fig. 2, a lower rotating rod 4 is disposed between the second lower moving block 222 and the first lower moving block 212, the lower rotating rod 4 is a circular rod-shaped structure, an axis of the lower rotating rod 4 is perpendicular to and intersects with an axis of the screw 21, and two ends of the lower rotating rod 4 are rotatably connected to a side wall of the first lower moving block 212 close to the second lower moving block 222 and a side wall of the second lower moving block 222 close to the first lower moving block 212. The lower rotating rod 4 is fixedly sleeved with a lower pressing wheel 41, the cross section of the lower pressing wheel 41 is circular, the axis of the lower pressing wheel 41 is overlapped with the axis of the lower rotating rod 4, and the area of the cross section of the lower pressing wheel 41 gradually decreases from the two ends of the lower pressing wheel 41 to the middle.

Referring to fig. 2, the U-shaped plate body 2 and the screw 21 are provided with a first driving assembly 5 for driving the screw 21 to rotate, and the first driving assembly 5 includes a lower motor 51, a lower driving gear 52 and a lower driven gear 53. The lower motor 51 is fixed to the bottom surface of the horizontal portion of the U-shaped plate body 2, and the axis of the output shaft thereof is vertical. The axis of the lower driving gear 52 coincides with the axis of the output shaft of the lower motor 51, and the surface thereof on the side close to the lower motor 51 is fixed to the end of the output shaft of the lower motor 51. The axis of the lower driven gear 53 coincides with the axis of the screw 21, and is sleeved and fixed on the screw 21 near the lower end of the screw 21, and the lower driven gear 53 is meshed with the lower driving gear 52. The first lower movable block 212 is provided with a second driving assembly 6 for driving the lower rotating rod 4 to rotate, and the second driving assembly 6 comprises an upper motor 61, an upper driving gear 62 and an upper driven gear 63. The upper motor 61 is fixed on the bottom surface of the first lower movable block 212, and the axis of the output shaft thereof is parallel to the axis of the lower rotating rod 4. The axis of the upper driving gear 62 coincides with the axis of the output shaft of the upper motor 61, and the side wall thereof near the upper motor 61 is fixed to the end of the output shaft of the upper motor 61. The axis of the upper driven gear 63 coincides with the axis of the lower rotating rod 4, and the upper driven gear 63 is engaged with the upper driving gear 62, and is sleeved on and fixed to the lower rotating rod 4. When the cable on the cable frame 13 needs to be pulled, a worker firstly turns on the lower motor 51, the lower motor 51 drives the lower driving gear 52 fixed to the output shaft of the lower motor to rotate after working, so that the lower driven gear 53 meshed with the lower driving gear 52 rotates, and meanwhile, the screw 21 fixed to the lower driven gear 53 also rotates, because the first upper movable block 211 and the first lower movable block 212 are respectively in threaded connection with the upper section and the lower section of external threads of the screw 21, the first upper movable block 211 and the first lower movable block 212 are close to (or far from) each other, in the process, the upper pressing wheel 31 on the upper rotating rod 3 and the lower pressing wheel 41 on the lower rotating rod 4 are close to (or far from) each other until the upper pressing wheel 31 and the lower pressing wheel 41 are matched and tightly press the cable, so that the cable tractor can pull the cable. When the upper pressing wheel 31 and the lower pressing wheel 41 are matched and act and the cable is tightly pressed, a worker only needs to start the upper motor 61, the upper motor 61 drives the upper driving gear 62 fixed with an output shaft of the upper motor to rotate after working, so that the upper driven gear 63 meshed with the upper driving gear 62 rotates, the upper driven gear 63 drives the lower rotating rod 4 fixed with the upper driven gear to rotate after rotating, and the lower pressing wheel 41 fixed on the lower rotating rod 4 rotates, so that the cable tractor pulls the cable tightly pressed by the upper pressing wheel 31 and the lower pressing wheel 41.

Referring to fig. 2, limiting plates 23 are arranged on the U-shaped plate body 2, the limiting plates 23 are horizontally arranged in a rectangular plate-shaped structure, the number of the limiting plates 23 is two, the bottom surfaces of the two limiting plates 23 are respectively fixed to the upper surfaces of the two vertical portions of the U-shaped plate body 2, the upper end of the screw rod 21 is rotatably connected to the bottom surface of the limiting plate 23 close to one side of the screw rod 21, and the upper end of the guide rod 22 is fixed to the bottom surface of the limiting plate 23 close to one side of the guide rod 22. Through setting up limiting plate 23 to this has all played good limited action to screw rod 21 and guide bar 22, has avoided screw rod 21 to take place the probability of rocking at the rotation in-process, has strengthened the staff and has adjusted the stability of in-process to last the distance between wheel 31 and the lower wheel 41 of pressing.

Referring to fig. 2, an upper annular groove 311 is formed on the arc surface of the upper pressing wheel 31, the cross section of the upper annular groove 311 is circular, the upper annular groove 311 is disposed at the middle position of the upper pressing wheel 31, and an upper annular rubber sheet 3111 is embedded in the upper annular groove 311. Go up annular rubber sheet 3111's cross section for the ring shape, its inboard arc surface and the inboard arc surface laminating of last annular groove 311 are fixed, and the outside arc surface of going up annular rubber sheet 3111 and the outside arc surface parallel and level of last pressure wheel 31, go up annular rubber sheet 3111 and adopt rubber materials to make, the surface of going up annular rubber sheet 3111 has great coefficient of friction, through setting up annular rubber sheet 3111, so that the frictional force between the arc surface of last pressure wheel 31 and the arc surface of cable gets the increase, thereby the stability of being connected between cable and the last pressure wheel 31 of supporting has been strengthened. Lower annular groove 411 has been seted up on the arc surface of pressing wheel 41 down, and the cross section of lower annular groove 411 is circular, and lower annular groove 411 sets up on the position of pressing wheel 41 middle part down, and the embedded annular rubber piece 4111 down that is equipped with of lower annular groove 411. The cross section of lower annular rubber sheet 4111 is ring shape, its inboard arc surface and the inboard arc surface laminating of lower annular recess 411 are fixed, the outside arc surface of lower annular rubber sheet 4111 is parallel and level with the outside arc surface of lower pressure wheel 41, lower annular rubber sheet 4111 adopts rubber materials to make, the surface of lower annular rubber sheet 4111 has great coefficient of friction, through setting up lower annular rubber sheet 4111, so that the frictional force between the arc surface of lower pressure wheel 41 and the arc surface of cable can increase, thereby the stability of being connected between cable and the lower pressure wheel 41 has been strengthened.

Referring to fig. 2, a first limiting assembly 7 is disposed between the first upper movable block 211 and the first lower movable block 212, and as shown in fig. 3, the first limiting assembly 7 includes a first upper threaded rod 71, a first upper limiting block 72, a first lower threaded rod 73, and a first lower limiting block 74. The axis of the first upper threaded rod 71 is parallel to the axis of the upper rotating rod 3, and is disposed between the first upper movable block 211 and the upper pressing wheel 31, and one end of the first upper threaded rod 71, which is far away from the upper pressing wheel 31, is fixed to the side wall of the first upper movable block 211, which is close to the second upper movable block 221. The cross section of the first upper limiting block 72 is rectangular, the first upper threaded rod 71 penetrates through the first upper limiting block 72 and is in clearance fit with the first upper limiting block, the height of the bottom surface of the first upper limiting block 72 is smaller than that of the arc-shaped surface of the bottom of the upper pressing wheel 31, and a first upper nut 711 is arranged at the position, close to the first upper limiting block 72, of the first upper threaded rod 71. The axis of the first upper nut 711 coincides with the axis of the first upper threaded rod 71, the first upper threaded rod 71 is sleeved with the first upper threaded rod and is in threaded connection with the first upper threaded rod, the number of the first upper nut 711 is two, and the two first upper nuts 711 are symmetrically arranged on two sides of the first upper limiting block 72, so that a worker can conveniently adjust the position of the first upper limiting block 72 on the first upper threaded rod 71. The axis of the first lower threaded rod 73 is parallel to the axis of the lower rotating rod 4, and is disposed between the first lower movable block 212 and the lower pressing wheel 41, and one end of the first lower threaded rod 73, which is far away from the lower pressing wheel 41, is fixed to the side wall of the first lower movable block 212, which is close to the second lower movable block 222. The cross section of the first lower limiting block 74 is rectangular, the first lower threaded rod 73 penetrates through the first lower limiting block 74 and is in clearance fit with the first lower limiting block, the height of the upper surface of the first lower limiting block 74 is larger than that of the arc-shaped surface at the top of the lower pressing wheel 41, and a first lower nut 731 is arranged at the position, close to the first lower limiting block 74, of the first lower threaded rod 73. The axis of the first lower screw caps 731 coincides with the axis of the first lower screw rod 73, the first lower screw caps 731 are sleeved on the first lower screw rod 73 and are in threaded connection with the first lower screw rod, the number of the first lower screw caps 731 is two, and the two first lower screw caps 731 are symmetrically arranged on two sides of the first lower limiting block 74, so that the position of the first lower limiting block 74 on the first lower screw rod 73 can be conveniently adjusted by a worker.

Referring to fig. 2, a second limiting assembly 8 is disposed between the second upper movable block 221 and the second lower movable block 222, and as shown in fig. 4, the second limiting assembly 8 includes a second upper threaded rod 81, a second upper limiting block 82, a second lower threaded rod 83, and a second lower limiting block 84. The axis of the second upper threaded rod 81 is parallel to the axis of the upper rotating rod 3, and is disposed between the second upper movable block 221 and the upper pressing wheel 31, and one end of the second upper threaded rod 81, which is far away from the upper pressing wheel 31, is fixed to the side wall of the second upper movable block 221, which is close to the first upper movable block 211. The cross section of the second upper limiting block 82 is rectangular, the second upper threaded rod 81 penetrates through the second upper limiting block 82 and is in clearance fit with the second upper limiting block, the height of the bottom surface of the second upper limiting block 82 is smaller than that of the arc-shaped surface of the bottom of the upper pressing wheel 31, and a second upper nut 811 is arranged at the position, close to the second upper limiting block 82, of the second upper threaded rod 81. The axis of the second upper nut 811 coincides with the axis of the second upper threaded rod 81, the second upper threaded rod 81 is sleeved with the second upper threaded rod and is in threaded connection with the second upper threaded rod, the number of the second upper nuts 811 is two, and the two second upper nuts 811 are symmetrically arranged on two sides of the second upper limiting block 82, so that the position of the second upper limiting block 82 on the second upper threaded rod 81 can be conveniently adjusted by a worker. The axis of the second lower threaded rod 83 is parallel to the axis of the lower rotating rod 4, and is disposed between the second lower moving block 222 and the lower pressing wheel 41, and one end of the second lower threaded rod 83 far away from the lower pressing wheel 41 is fixed to the side wall of the second lower moving block 222 close to the first lower moving block 212. The cross section of the second lower limiting block 84 is rectangular, the second lower threaded rod 83 penetrates through the second lower limiting block 84 and is in clearance fit with the second lower limiting block 84, the height of the upper surface of the second lower limiting block 84 is larger than that of the arc-shaped surface at the top of the lower pressing wheel 41, and a second lower nut 831 is arranged on the position, close to the second lower limiting block 84, of the second lower threaded rod 83. The axis of the second lower nut 831 coincides with the axis of the second lower threaded rod 83, the second lower threaded rod 83 is sleeved with the second lower threaded rod and is in threaded connection with the second lower threaded rod 83, the number of the second lower nut 831 is two, and the two second lower nuts 831 are symmetrically arranged on two sides of the second lower limiting block 84, so that the position of the second lower limiting block 84 on the second lower threaded rod 83 can be conveniently adjusted by a worker.

Referring to fig. 3, a first insertion groove 741 is formed in the upper surface of the first lower limiting block 74, the cross section of the first insertion groove 741 is rectangular, and the first insertion groove 741 is inserted into and matched with the first upper limiting block 72. As shown in fig. 4, a second insertion groove 841 is formed in the upper surface of the second lower limiting block 84, the cross section of the second insertion groove 841 is rectangular, and the second insertion groove 841 is inserted into and matched with the second lower limiting block 84. By arranging the first inserting groove 741 and the second inserting groove 841, the situation that the cables are difficult to be tightly pressed by the upper pressing wheel 31 and the lower pressing wheel 41 due to the mutual interference between the first upper limiting block 72 and the first lower limiting block 74 or between the second upper limiting block 82 and the second lower limiting block 84 is avoided. By arranging the first limiting component 7 and the second limiting component 8, when the diameter of the cable to be pulled is larger, the contact area between the cable to be pulled and the upper pressing wheel 31 and the contact area between the cable to be pulled and the lower pressing wheel 41 are smaller, in order to enhance the stability of the cable pulling machine in pulling the cable with larger diameter and avoid the situation that the cable slides away from the gap between the ends of the upper pressing wheel 31 and the lower pressing wheel 41, a worker only needs to screw the first upper nut 711 and the second upper nut 811 so as to adjust the distance between the first upper limiting block 72 and the second upper limiting block 82, and by screwing the second lower nut 831 and the second lower nut 831, the distance between the first lower limiting block 74 and the second upper limiting block 82 and the distance between the first lower limiting block 74 and the second lower limiting block 84 can be adjusted until the distance between the first upper limiting block 72 and the second upper limiting block 82 and the distance between the first lower limiting block 74 and the second lower limiting block 84 are matched with the cable with larger diameter, the positions of the first upper limiting block 72, the second upper limiting block 82, the first lower limiting block 74 and the second lower limiting block 84 are stopped from being adjusted, so that the cable tractor can meet the requirements of cable traction with a large diameter, and the stability of the cable tractor in the process of traction of the cable with a large diameter is enhanced.

Referring to fig. 3, the first chamfers 721 are formed on the intersecting edges between the bottom surface of the first upper limiting block 72 and the four side walls thereof, and by the arrangement of the first chamfers 721, the difficulty in inserting the first upper limiting block 72 into the first inserting groove 741 is reduced, which is beneficial to the cooperation of the upper pressing wheel 31 and the lower pressing wheel 41 and the pressing of cables with different thicknesses. As shown in fig. 4, the bottom surface of the second lower limiting block 84 and the intersecting edges between the four side walls thereof are provided with second chamfers 821, which reduces the difficulty of inserting the second lower limiting block 84 and the second inserting groove 841, and is beneficial to the cooperation of the upper pressing wheel 31 and the lower pressing wheel 41 and the pressing of cables with different thicknesses.

The implementation principle of the embodiment is as follows: when the thickness of the cable wound on the cable frame 13 is different, in order to facilitate the cooperation of the upper pressing wheel 31 and the lower pressing wheel 41 and to tightly press the cables with different thicknesses, a worker only needs to drive the screw rod 21 to rotate through the first driving component 5, because two sections of external threads with opposite rotating directions and equal thread pitches are arranged on the screw rod 21, the screw rod 21 penetrates through the first upper movable block 211 and the first lower movable block 212 and is in threaded connection with the first upper movable block and the first lower movable block, so that the first upper movable block 211 and the first lower movable block 212 are close to or far away from each other until the distance between the upper pressing wheel 31 and the lower pressing wheel 41 meets the cable requirements with different thicknesses, the cooperation of the upper pressing wheel 31 and the lower pressing wheel 41 is facilitated and the cables are tightly pressed, and the cable tractor is favorable for effectively drawing thicker cables.

In the scheme, when the cable on the cable frame 13 needs to be pulled, a worker firstly turns on the lower motor 51, the lower motor 51 drives the lower driving gear 52 fixed with the output shaft to rotate after working, thereby rotating the lower driven gear 53 engaged with the lower driving gear 52, and at the same time, the screw 21 fixed to the lower driven gear 53 is also rotated, since the first upper movable block 211 and the first lower movable block 212 are respectively in threaded connection with the upper and lower external threads of the screw 21, so that the first upper movable block 211 and the first lower movable block 212 come close to (or go away from) each other, in the process, the upper pressing wheel 31 on the upper rotating rod 3 and the lower pressing wheel 41 on the lower rotating rod 4 are close to (or far away from) each other until the upper pressing wheel 31 and the lower pressing wheel 41 are matched and tightly press the cable, so that the cable tractor can conveniently pull the cable. When the upper pressing wheel 31 and the lower pressing wheel 41 are matched and act and the cable is tightly pressed, a worker only needs to start the upper motor 61, the upper motor 61 drives the upper driving gear 62 fixed with an output shaft of the upper motor to rotate after working, so that the upper driven gear 63 meshed with the upper driving gear 62 rotates, the upper driven gear 63 drives the lower rotating rod 4 fixed with the upper driven gear to rotate after rotating, and the lower pressing wheel 41 fixed on the lower rotating rod 4 rotates, so that the cable tractor pulls the cable tightly pressed by the upper pressing wheel 31 and the lower pressing wheel 41.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a cable tractor, includes brace table (1), be fixed with dead lever (15) and fixed column (14) on brace table (1), rotate on dead lever (15) and install cable rack (13), its characterized in that: a U-shaped plate body (2) is fixed at the upper end of the fixed column (14), a screw rod (21) is rotatably installed on the horizontal part of the U-shaped plate body (2), two sections of external threads with opposite rotation directions and equal thread pitches are arranged on the screw rod (21), a first upper movable block (211) and a first lower movable block (212) are respectively arranged on the two sections of external threads of the screw rod (21), the screw rod (21) penetrates through the first upper movable block (211) and the first lower movable block (212) and is in threaded connection with the first upper movable block and the first lower movable block, a guide rod (22) which is parallel to the screw rod (21) is fixed on the horizontal part of the U-shaped plate body (2), a second upper movable block (221) and a second lower movable block (222) are arranged on the guide rod (22), the guide rod (22) penetrates through the second upper movable block (221) and the second lower movable block (222) and is in sliding fit with the two upper movable blocks, and an upper movable rod (3) is arranged between the second upper movable block (221) and the first, go up the both ends of transfer pole (3) and go up movable block (221) and first last movable block (211) rotation connection respectively with the second, go up fixed cover and be equipped with on transfer pole (3) and support pinch roller (31), be provided with down transfer pole (4) between second lower movable block (222) and first movable block (212), the both ends of down transfer pole (4) rotate with second lower movable block (222) and first movable block (212) respectively and be connected, fixed cover is equipped with down to pinch roller (41) down on down transfer pole (4), be provided with jointly on U-shaped plate body (2) and screw rod (21) and order about screw rod (21) pivoted drive assembly (5).

2. A cable pulling machine according to claim 1, characterized in that: the lower end of the screw rod (21) penetrates through the horizontal part of the U-shaped plate body (2) and is connected with the horizontal part in a rotating mode, and the first driving assembly (5) comprises a lower motor (51) fixed to the bottom surface of the horizontal part of the U-shaped plate body (2), a lower driving gear (52) fixed to the end portion of an output shaft of the lower motor (51) and a lower driven gear (53) fixedly sleeved on the screw rod (21) and meshed with the lower driving gear (52).

3. A cable pulling machine according to claim 1, characterized in that: limiting plates (23) are fixed at two ends of the U-shaped plate body (2), the limiting plates (23) are arranged in parallel with the horizontal portion of the U-shaped plate body (2), the upper end of the screw rod (21) is connected with the bottom surface of the limiting plate (23) close to one side of the screw rod (21) in a rotating mode, and the upper end of the guide rod (22) is fixed with the bottom surface of the limiting plate (23) close to one side of the guide rod (22).

4. A cable pulling machine according to claim 1, characterized in that: a first limiting component (7) is arranged between the first upper movable block (211) and the first lower movable block (212), the first limiting component (7) comprises a first upper threaded rod (71) fixed with the side wall of the first upper movable block (211) close to one side of the second upper movable block (221), a first upper limiting block (72) arranged on the first upper threaded rod (71), a first lower threaded rod (73) fixed with the side wall of the first lower movable block (212) close to one side of the second lower movable block (222), and a first lower limiting block (74) arranged on the first lower threaded rod (73), the first upper threaded rod (71) penetrates through the first upper limiting block (72) and is in clearance fit with the first upper limiting block, first upper threaded rods (71) on two sides of the first upper limiting block (72) are both provided with first upper nuts (711) in threaded connection with the first upper threaded rod (71), and the first lower threaded rods (73) penetrate through the first lower limiting block (74) and are in clearance fit with the first lower limiting block (74), first lower screw caps (731) in threaded connection with the first lower screw rods (73) are arranged on the first lower screw rods (73) on the two sides of the first lower limiting block (74);

a second limiting component (8) is arranged between the second upper movable block (221) and the second lower movable block (222), the second limiting component (8) comprises a second upper threaded rod (81) fixed with the side wall of the second upper movable block (221) close to one side of the first upper movable block (211), a second upper limiting block (82) arranged on the second upper threaded rod (81), a second lower threaded rod (83) fixed with the side wall of the second lower movable block (222) close to one side of the first lower movable block (212), and a second lower limiting block (84) arranged on the second lower threaded rod (83), the second upper threaded rod (81) penetrates through the second upper limiting block (82) and is in clearance fit with the second upper limiting block, second upper nuts (811) in threaded connection with the second upper threaded rod (81) are arranged on the second upper limiting block (81) on two sides of the second upper limiting block (82), and the second lower threaded rod (83) penetrates through the second upper limiting block (84) and is in clearance fit with the second lower limiting block, and second lower screw caps (831) in threaded connection with the second lower screw rods (83) are arranged on the second lower screw rods (83) on two sides of the second lower limiting block (84).

5. A cable pulling machine according to claim 4, characterized in that: the upper surface of the first lower limiting block (74) is provided with a first inserting groove (741) which is inserted and matched with the first upper limiting block (72), and the upper surface of the second lower limiting block (84) is provided with a second inserting groove (841) which is inserted and matched with the second upper limiting block (82).

6. A cable pulling machine according to claim 5, characterized in that: first chamfers (721) are arranged on intersecting edges between the bottom surface of the first upper limiting block (72) and four side walls of the first upper limiting block, and second chamfers (821) are arranged on intersecting edges between the bottom surface of the second lower limiting block (84) and four side walls of the second lower limiting block.

7. A cable pulling machine according to claim 1, characterized in that: install second drive assembly (6) on first movable block (212) down, second drive assembly (6) include with first movable block (212) the bottom surface fixed last motor (61), with last motor (61) of the output shaft end fixing of last motor (61) and fixed cover locate down on pivot pole (4) and with last driven gear (63) of last driving gear (62) meshing.

8. A cable pulling machine according to claim 7, wherein: an upper annular groove (311) is formed in the position, close to the middle of the upper pressing wheel (31), of the arc-shaped surface of the upper pressing wheel (31), and an upper annular rubber sheet (3111) is embedded in the upper annular groove (311); lower annular groove (411) has been seted up on the arc surface of pressing wheel (41) down is close to the position of pressing wheel (41) middle part down, annular rubber piece (4111) down is equipped with to lower embedded being equipped with of annular groove (411).