CN215592463U - Hydraulic hoisting system for pole holding of power transmission line tower assembly - Google Patents

Abstract

The utility model discloses a hydraulic hoisting system for a tower holding pole of a power transmission line group, and relates to the technical field of overhead power transmission line construction equipment. The system comprises a hydraulic tractor and a tailstock wire collecting unit. The tail frame take-up unit comprises a main frame body, and a cycloid device and a take-up device are sequentially arranged on the main frame body from front to back. The cycloid device comprises a guide post and a driving screw rod which is rotationally connected with the main frame body, a sliding frame is arranged between the guide post and the driving screw rod, the sliding frame can reciprocate along the axial direction of the driving screw rod under the unidirectional rotation action of the driving screw rod, and a carrier roller assembly is arranged on the sliding frame. The take-up device comprises a wire coil which is rotatably connected with the main frame body through a rotating shaft. The driving screw rod and the rotating shaft are respectively connected with a power output shaft of the driving device through a transmission mechanism. The system is stable in starting, has no delay effect, and enhances the safety of holding pole control.

Description

Hydraulic hoisting system for pole holding of power transmission line tower assembly

Technical Field

The utility model relates to the technical field of overhead transmission line construction equipment, in particular to a hydraulic hoisting system for a tower holding pole of a transmission line.

Background

At present, the ground double flat arms or the ground rocker arm holding rod is widely used for high tower erection construction of extra-high voltage and large span projects, is novel tower erection hoisting equipment which is very suitable for the installation and construction characteristics of extra-high voltage transmission towers in the power industry, and has the advantages of safety, high efficiency, convenience in operation and the like. At present, a lifting mechanism matched with a floor holding rod is generally an electric winch, and the mode of adopting the electric winch mainly has the following defects:

firstly, the power supply is inconvenient to use and unstable in power quality during field construction of the power transmission line, a special power supply or a matched generator is needed for supplying power, and the power of the pole-holding hoisting motor accounts for 53-69% of the total power of all the motors.

And secondly, the electric winding system adopts different resistors connected in series, three gears are manually changed in speed, and the gears need to be frequently shifted according to load change during work so as to reasonably match the relationship between speed and load.

Thirdly, due to the characteristics of a relay control system, hysteresis and delay effects exist in various actions of the electrically controlled holding pole, and particularly when accurate action control is needed, such as positioning of a tower piece, the lifting reaction of a holding pole lifting hook is not timely, and the hysteresis phenomenon exists.

Fourthly, the fault rate is high, and according to incomplete statistics, the fault in the electric control aspect of the main winch of the ground holding pole accounts for 52% of the total fault rate of the holding pole.

The hydraulic traction machine applied to overhead transmission line erection effectively overcomes the defects of the electric hoisting equipment due to the adoption of a hydraulic driving mode. Although the hydraulic tractor applied to the erection of the overhead transmission line is provided with the tailstock for winding the wire, the length of the overhead transmission line is far from the length of the steel wire rope for lifting the ground derrick (the length of the overhead transmission line is generally hundreds of meters, the longest length of the overhead transmission line cannot exceed 1000 meters, and the length of the steel wire rope for lifting the ground derrick is generally 2000 plus 3000 meters), so that the sizes of wire coils for winding the wire rope and the steel wire rope are also far from each other, and the tailstock of the existing hydraulic tractor cannot meet the winding requirement of the steel wire rope for lifting the ground derrick.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides a hydraulic hoisting system for a tower holding pole of a power transmission line, which adopts a hydraulic tractor as a power source and is matched with a split type tailstock take-up unit, so that the winding requirement of a steel wire rope for lifting a landing holding pole can be met, the starting is stable, no delay effect exists, the safety of the control of the holding pole is enhanced, and the failure rate is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a hydraulic hoisting system for a tower holding pole of a power transmission line group comprises a hydraulic tractor and a tail frame wire collecting unit;

the tail frame take-up unit comprises a main frame body, and a cycloid device and a take-up device are sequentially arranged on the main frame body from front to back;

the cycloid device comprises a guide post and a driving screw rod which is rotationally connected with the main frame body, a sliding frame is arranged between the guide post and the driving screw rod, the sliding frame can reciprocate along the axial direction of the driving screw rod under the unidirectional rotation action of the driving screw rod, and a carrier roller assembly is arranged on the sliding frame;

the take-up device comprises a wire coil which is rotationally connected with the main frame body through a rotating shaft;

the driving screw rod and the rotating shaft are respectively connected with a power output shaft of the driving device through a transmission mechanism.

Further, the balladeur train include two risers, two the riser between be provided with first sliding sleeve and second sliding sleeve, just first sliding sleeve and second sliding sleeve overlap respectively and locate the outside of drive lead screw and guide post, the second sliding sleeve on fixedly be provided with a installing support, the installing support on rotate be provided with drive lead screw matched with direction shift fork, first sliding sleeve on be provided with and be used for dodging the breach of dodging of direction shift fork.

Furthermore, the upper ends of the vertical plates are provided with lug plates, two first carrier rollers are arranged between the two lug plates, a connecting plate is arranged on one side, located on the lug plate, between the two vertical plates, and two second carrier rollers perpendicular to the first carrier rollers are arranged on the connecting plate.

Furthermore, one end of the driving screw rod is sleeved with a shaft sleeve which can rotate relative to the driving screw rod, the shaft sleeve is rotatably connected with the main frame body through a bearing assembly, a driving piece and a transition connecting sleeve are fixedly arranged on the shaft sleeve and positioned on the inner side and the outer side of the bearing assembly respectively, a driving disc which can only axially slide relative to the driving screw rod is arranged on the outer end of the shaft sleeve on the driving screw rod, a positioning pin is fixedly arranged on the driving disc, and a positioning hole matched with the positioning pin is arranged on the transition connecting sleeve.

Furthermore, a guide block is arranged on the driving screw rod, and a sliding groove matched with the guide block is arranged on the inner side cylindrical surface of the driving disc.

Furthermore, the driving disc is provided with a mounting hole which radially penetrates through the side wall of the driving disc, and a plug, a spring and a jacking block are sequentially arranged in the mounting hole from outside to inside along the inner edge.

Furthermore, the jacking block is of a spherical structure, and two positioning grooves matched with the jacking block are formed in the driving screw rod.

Furthermore, an end plate is fixedly arranged at the inner end of the rotating shaft, a bearing plate used for bearing the central shaft of the wire coil is arranged on the end plate, and a positioning bolt is arranged between the central shaft and the bearing plate.

Further, the body frame body include the frame base, the frame base on be provided with the installation roof beam of slant back top slope, the rear end of installation roof beam with be provided with a supporting beam between the frame base, be provided with the mounting panel on the last side of installation roof beam, drive lead screw and guide post be located two the mounting panel between, just the axis of guide post and the driven plane of axis of drive lead screw with the installation roof beam perpendicular.

Further, the wire coil is rotatably connected with the mounting beam through a rotating shaft.

The utility model has the beneficial effects that:

1. the system adopts the hydraulic tractor as a power source, the hydraulic tractor can realize stepless speed change and stable heavy-load starting without delay effect, and the control safety of the holding pole is enhanced.

2. The hydraulic traction machine for stringing the power transmission line is very mature in technology, and the failure rate of the pole is greatly reduced by adopting a hydraulic hoisting system compared with an electric hoisting mode.

3. When the holding pole is idle, the hydraulic tractor can be turned to paying-off for use, so that the equipment utilization rate is improved, the equipment holding capacity is reduced, and the cost is reduced.

4. The main frame body of the tail frame take-up unit in the system adopts a unique wedge-shaped structure, so that the structural stability of the whole frame body is ensured, the using amount of steel is reduced, and the production cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of a tail frame take-up unit;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

FIG. 4 is a top view of the tailstock wire take-up unit;

FIG. 5 is a right side view of the tailstock wire take-up unit;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is an enlarged view of the portion C of FIG. 6;

FIG. 8 is an enlarged view of portion D of FIG. 6;

FIG. 9 is a front view of the drive plate;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 11 is a perspective view of the driving screw;

FIG. 12 is an enlarged view of section E of FIG. 11;

FIG. 13 is a perspective view of a cycloid section of a cycloid device;

fig. 14 is a cross-sectional view of the carriage;

FIG. 15 is a perspective view of a guide fork;

fig. 16 is a perspective view of the rotating shaft.

In the figure: 11-edge beam, 12-reinforced beam, 13-mounting beam, 14-supporting beam, 15-connecting beam, 16-mounting plate, 17-reinforcing rib plate,

21-driving screw rod, 211-guide groove, 212-mounting groove, 213-positioning groove, 22-guide column, 231-vertical plate, 2311-lug plate, 232-first sliding sleeve, 2321-avoiding notch, 233-second sliding sleeve, 2341-vertical plate, 2342-transverse plate, 2343-plug hole, 235-connecting plate, 236-pressing plate, 24-guiding shifting fork, 241-bottom plate, 242-plug column, 243-shifting fork block, 251-first carrier roller, 252-second carrier roller, 26-shaft sleeve, 27-transition connecting sleeve, 271-set screw, 28-driving disc, 281-positioning pin, 282-driving rod, 283-driving handle, 284-sliding groove, 285-mounting hole, 291-plug, 292-spring, 293-a tightening block which is arranged at the back of the main body,

31-wire coil, 311-central shaft, 32-rotating shaft, 321-end plate, 322-bearing plate, 33-positioning bolt, 4-driving device,

51-drive sprocket, 52-first driven sprocket, 53-second driven sprocket, 54-first chain, 55-second chain.

Detailed Description

For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, and the up-down direction is taken as a vertical direction.

A hydraulic hoisting system for a pole of a tower of a power transmission line comprises a hydraulic tractor (not shown in the figure) and a tailstock take-up unit positioned on the rear side of the hydraulic tractor.

The hydraulic tractor is used for erecting the power transmission line in the prior art, belongs to the prior art, and is not described in detail herein.

As shown in fig. 1, 4 and 5, the tail frame take-up unit comprises a main frame body, wherein a cycloid device and a take-up device are sequentially arranged on the main frame body from front to back, and the cycloid device and the take-up device are respectively connected with a power output end of the driving device 4 through a transmission mechanism.

As shown in fig. 1, the main frame body includes a square frame base formed by sequentially ending four side beams 11, a reinforcing beam 12 is disposed in the frame base, as a specific embodiment, the reinforcing beam 12 in this embodiment extends in a transverse direction, and left and right ends of the reinforcing beam 12 are fixedly connected to the frame base by welding respectively. The frame base on be provided with the installation roof beam 13 of top slope behind the slant, the front end of installation roof beam 13 through welded mode with the frame base along longitudinal extension's boundary beam 11 fixed connection, the rear end of installation roof beam 13 with be provided with a supporting beam 14 between the frame base along longitudinal extension's boundary beam 11, supporting beam 14's upper end through welded mode with installation roof beam 13 fixed connection, supporting beam 14's lower extreme through welded mode with frame base fixed connection. And a connecting beam 15 is arranged between the two mounting beams 13, and two ends of the connecting beam 15 are fixedly connected with the mounting beams 13 respectively in a welding mode.

An installation plate 16 vertically extending upwards from the installation beam 13 is arranged on the upper side surface of the installation beam 13, and a reinforcing rib plate 17 is arranged between the installation plate 16 and the installation beam 13.

As shown in fig. 5 and 6, the cycloid device includes a driving screw 21 and a guide post 22 between two mounting plates 16, the guide post 22 is located below the driving screw 21, and a plane driven by the axis of the guide post 22 and the axis of the driving screw 21 is perpendicular to the mounting beam 13.

As shown in fig. 6, two ends of the guide post 22 are fixedly connected to the mounting plate 16 by fixing bolts. The left end and the right end of the driving screw rod 21 are respectively connected with the mounting plate 16 in a rotating way through bearing assemblies.

The driving screw 21 is provided with two guide grooves 211 with the same pitch and opposite rotation directions, and the ends of the two guide grooves 211 positioned on the same side are connected, that is, the two guide grooves 211 form a closed loop structure in a three-dimensional space, and the connection of the two guide grooves 211 is in smooth transition.

A sliding frame is arranged between the guide post 22 and the driving screw 21, as shown in fig. 6 and 13, the sliding frame includes two vertical plates 231, and a first sliding sleeve 232 and a second sliding sleeve 233 are sequentially arranged between the two vertical plates 231 from top to bottom. The vertical plate 231 is sequentially provided with a first avoidance hole and a second avoidance hole from top to bottom, wherein the first avoidance hole and the second avoidance hole are used for accommodating the driving screw rod 21 and the guide column 22. The first sliding sleeve 232 is sleeved outside the driving screw 21, and two ends of the first sliding sleeve 232 are respectively inserted into the first avoiding hole and fixedly connected with the vertical plate 231 in a welding manner. The second sliding sleeve 233 is sleeved outside the guide post 22, and two ends of the second sliding sleeve 233 are respectively inserted into the second avoiding hole and fixedly connected with the vertical plate 231 by welding.

As shown in fig. 8, 13 and 14, the second sliding sleeve 233 is fixedly provided with a mounting bracket, the mounting bracket is rotatably provided with a guiding fork 24 matched with the driving screw 21, the lower side surface of the first sliding sleeve 232 is provided with an avoiding gap 2321, and the upper end of the guiding fork 24 passes through the avoiding gap 2321 and then is matched with the driving screw 21.

As shown in fig. 15, the guide fork 24 includes a base plate 241, a plug column 242 extending downward in the vertical direction is disposed on the lower side of the base plate 241, a plug hole 2343 matching with the plug column 242 is disposed on the mounting bracket, and the plug column 242 is inserted into the plug hole 2343 and can rotate in the plug hole 2343. A shifting fork block 243 matched with the guide groove 211 of the driving screw rod 21 is arranged on the upper side surface of the bottom plate 241.

As a specific implementation manner, the mounting bracket in this embodiment includes a vertical plate 2341, and the lower end of the vertical plate 2341 is fixedly connected to the second sliding sleeve 233 by welding, a horizontal plate 2342 is disposed on the vertical plate 2341, and the inserting hole 2343 is disposed on the horizontal plate 2342.

And a carrier roller assembly is arranged on the sliding frame. The carrier roller assembly comprises two first carrier rollers 251 parallel to the driving screw rod 21, and two second carrier rollers 252 perpendicular to the driving screw rod 21 are arranged on one side of the first carrier rollers 251.

As a specific implementation manner, as shown in fig. 13, in this embodiment, an ear plate 2311 extending upward perpendicularly from the upper end surface of the vertical plate 231 is disposed at the front side of the upper end surface of the vertical plate 231, the first carrier roller 251 is disposed between the two ear plates 2311, and two ends of a roller shaft of the first carrier roller 251 are respectively fixedly connected to the ear plates 2311. A connecting plate 235 is disposed between the two vertical plates 231 and behind the ear plate 2311, and two ends of the connecting plate 235 are respectively fixedly connected to the upper end faces of the vertical plates 231. The second carrier rollers 252 are disposed at the left and right ends of the connecting plate 235, and the lower ends of the roller shafts of the second carrier rollers 252 are fixedly connected to the connecting plate 235.

As shown in fig. 1, the wire take-up device includes a wire coil 31 located between two mounting beams 13, and two ends of a central shaft 311 of the wire coil 31 are respectively rotatably connected with the mounting beams 13 through a rotating shaft 32. The central shaft 311 is fixedly connected with the inner end of the rotating shaft 32 in a detachable fixing mode, and the outer end of the rotating shaft 32 is rotatably connected with the mounting beam 13 through a bearing assembly.

As a specific implementation manner, as shown in fig. 16, in this embodiment, an end plate 321 is fixedly disposed at an inner end of the rotating shaft 32 (a side opposite to the two rotating shafts 32 is an inner side), the end plate 321 is fixedly connected to the rotating shaft 32 in a welding manner, a supporting plate 322 for supporting the central shaft 311 of the wire coil 31 is disposed on an inner side surface of the end plate 321 (a side opposite to the two rotating shafts 32 is an inner side), and the supporting plate 322 is in a U-shaped structure. As shown in fig. 2 and 16, the support plate 322 is provided with a positioning bolt 33 penetrating through the support plate 322 in the radial direction of the rotation shaft 32, the central shaft 311 of the wire coil 31 is provided with a through hole for accommodating the positioning bolt 33, and the through hole penetrates through the central shaft 311 in the radial direction of the central shaft 311. The positioning bolt 33 is provided with a lock nut (not shown).

The driving device 4 is a hydraulic motor or an electric motor, and as a specific implementation manner, the driving device 4 in this embodiment is fixedly disposed on the connecting beam 15 through a mounting seat.

As shown in fig. 1 and fig. 1, the transmission mechanism includes a driving sprocket 51 fixedly disposed on the power output shaft of the driving device 4, the driving sprocket 51 is a double-row sprocket, a first driven sprocket 52 is disposed at one end of the driving screw 21, and a second driven sprocket 53 is fixedly disposed on the rotating shaft 32 located at the same side as the first driven sprocket 52. As a specific embodiment, the first driven sprocket 52 is disposed at the right end of the driving screw 21, and the second driven sprocket 53 is disposed on the right rotating shaft 32. The driving sprocket 51 is connected to the first driven sprocket 52 and the second driven sprocket 53 by a first chain 54 and a second chain 55, respectively.

Further, because the guide shifting fork 24 produces sliding friction with the drive screw 21 in the course of work, easily wearing and tearing, can produce great clearance between guide shifting fork 24 and the drive screw 21 after using for a period of time, lead to the removal of balladeur train fast and slow, appear blocking even, cause the inhomogeneous problem of the wire rope of winding on the drum 31.

In order to repair and compensate the above problems manually, as shown in fig. 6 and 7, a shaft sleeve 26 capable of rotating relative to the driving screw 21 is sleeved at the right end of the driving screw 21, and the shaft sleeve 26 is rotatably connected with the mounting plate 16 through a bearing assembly, that is, the shaft sleeve 26 is fixedly connected with an inner ring of the bearing assembly in an interference fit manner, the driving screw 21 is in clearance fit with the shaft sleeve 26, and the driving screw 21 and the shaft sleeve 26 can rotate relatively. The inner end of the shaft sleeve 26 (the end close to the middle position of the driving screw 21 is the inner end) abuts against the step surface of the driving screw 21. A first driven chain wheel 52 and a transition connecting sleeve 27 which are used as driving parts are respectively arranged on the shaft sleeve 26 at the inner side and the outer side of the bearing assembly, wherein the first driven chain wheel 52 is fixedly connected with the shaft sleeve 26, and the transition connecting sleeve 27 is fixedly connected with the shaft sleeve 26 through a set screw 271.

A driving disk 28 which can only slide axially relative to the driving screw 21 is arranged at the outer end of the shaft sleeve 26 on the driving screw 21, a positioning pin 281 is fixedly arranged on the inner end surface of the driving disk 28, and a positioning hole matched with the positioning pin 281 is arranged on the outer end surface of the transition connecting sleeve 27. The driving disc 28 is fixedly provided with a driving rod 282 on the outer cylindrical surface, and the suspended end of the driving rod 282 is provided with a driving handle 283.

As a specific implementation manner, as shown in fig. 11 and 12, the driving screw 21 of the present embodiment is provided with an installation groove 212, and a guide block (not shown in the figure) is arranged in the installation groove 212. Preferably, the guide block adopts a flat key. As shown in fig. 9 and 10, the inner cylindrical surface of the driving disc 28 is provided with a sliding slot 284 which is matched with the guide block, and the sliding slot 284 axially penetrates through the driving disc 28.

Further, as shown in fig. 6 and 7, a positioning mechanism is disposed between the driving disk 28 and the driving screw 21. The positioning mechanism comprises a mounting hole 285 radially penetrating through the side wall of the driving disc 28, and a plug 291, a spring 292 and a puller block 293 are sequentially arranged in the mounting hole 285 from outside to inside along the inner edge. The plug 291 is fixedly connected to the driving plate 28 by means of a threaded connection.

Preferably, the tightening block 293 is in a spherical structure, two positioning grooves 213 matched with the tightening block 293 are arranged on the outer cylindrical surface of the driving screw 21, and the cross sections of the positioning grooves 213 are matched with the tightening block 293. When the tightening block 293 is located in the positioning groove 213 on the inner side, the positioning pin 281 on the driving disc 28 is inserted into the positioning hole of the transition connecting sleeve 27, and when the tightening block 293 is located in the positioning groove 213 on the outer side, the positioning pin 281 on the driving disc 28 is separated from the positioning hole of the transition connecting sleeve 27.

Thus, when the wire rope wound on the wire coil 31 is uneven and accumulated on one side, the driving plate 28 can be pulled out to separate the positioning pin 281 from the positioning hole. Because the bushing 26 can rotate relative to the driving screw 21, the first driven sprocket 52 cannot provide power for the rotation of the driving screw 21, and the driving screw 21 cannot rotate along with the rotation of the first driven sprocket 52. The driving disk 28 can be rotated, and since the driving disk 28 can only slide axially relative to the driving screw 21, when the driving disk 28 is rotated, the rotation of the driving disk 28 can be transmitted to the driving screw 21 through the guide block, and the driving screw 21 rotates together with the driving disk 28. At this time, the rotation speed of the driving screw 21 can be manually adjusted as required, and even the carriage can stay at a certain position for a period of time, so that the part of the wire coil 31 with less winding is filled up until the wire coil 31 reaches the winding uniform state again. The drive plate 28 is then pushed inwardly so that the locating pins 281 are inserted into the locating holes. At this time, the shaft sleeve 26 and the transitional connecting sleeve 27 fixedly arranged on the shaft sleeve 26 rotate together under the driving of the first driven sprocket 52. The rotation of the transitional connecting sleeve 27 is transmitted to the driving disk 28 through the positioning pin 281, and then transmitted to the driving screw 21 through the guiding block between the driving disk 28 and the driving screw 21, so as to drive the driving screw 21 to rotate. At this time, the driving screw 21 is restored to the state driven by the driving device 4 to rotate.

Further, the guide fork 24 generates sliding friction with the driving screw rod 21 in the working process, is easy to wear, belongs to a wearing part, and needs to be replaced frequently, and in order to facilitate replacement, the transverse plate 2342 is fixedly connected with the vertical plate 2341 through screws.

Further, in order to facilitate opening of the first idler 251 located above, as shown in fig. 13, a U-shaped slot for receiving a roller shaft of the first idler 251 located above is provided at an upper end of the ear plate 2311, a pressing plate 236 is provided at an outer side of the ear plate 2311, and the pressing plate 236 is fixedly connected to the ear plate 2311 by a screw. An arc-shaped groove is formed in the lower side surface of the pressing plate 236, and the arc-shaped groove and the clamping groove together form a circular hole for accommodating a roller shaft of the first carrier roller 251 located above.

During operation, one end of the steel wire rope is connected with the holding rod, and the other end of the steel wire rope rounds the lifting fulcrum and then sequentially passes through the hydraulic tractor and the cycloid device of the tailstock take-up unit, and finally is fixedly connected with the central shaft 311 of the wire coil 31. And then starting the hydraulic tractor and a driving device 4 of the tail frame take-up unit to lift the holding rod.

Claims (10)

1. The utility model provides a pole hydraulic winch system is embraced to transmission line group tower which characterized in that: the device comprises a hydraulic tractor and a tailstock wire-rewinding unit;

the tail frame take-up unit comprises a main frame body, and a cycloid device and a take-up device are sequentially arranged on the main frame body from front to back;

the cycloid device comprises a guide post and a driving screw rod which is rotationally connected with the main frame body, a sliding frame is arranged between the guide post and the driving screw rod, the sliding frame can reciprocate along the axial direction of the driving screw rod under the unidirectional rotation action of the driving screw rod, and a carrier roller assembly is arranged on the sliding frame;

the take-up device comprises a wire coil which is rotationally connected with the main frame body through a rotating shaft;

the driving screw rod and the rotating shaft are respectively connected with a power output shaft of the driving device through a transmission mechanism.

2. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 1, characterized in that: the sliding frame comprises two vertical plates, a first sliding sleeve and a second sliding sleeve are arranged between the two vertical plates, the first sliding sleeve and the second sliding sleeve are respectively sleeved outside the driving screw rod and the guide column, an installation support is fixedly arranged on the second sliding sleeve, a guide shifting fork matched with the driving screw rod is arranged on the installation support in a rotating mode, and a avoiding notch used for avoiding the guide shifting fork is formed in the first sliding sleeve.

3. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 2, characterized in that: the upper ends of the vertical plates are provided with lug plates, two first carrier rollers are arranged between the two lug plates, a connecting plate is arranged on one side, located on the lug plates, between the two vertical plates, and two second carrier rollers perpendicular to the first carrier rollers are arranged on the connecting plate.

4. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 1, characterized in that: one pot head of drive lead screw be equipped with can for drive lead screw pivoted axle sleeve, just the axle sleeve pass through bearing assembly and main frame body and rotate and be connected, the axle sleeve on lie in the inside and outside both sides of bearing assembly are fixed driving piece and the transition adapter sleeve of being provided with respectively, the drive lead screw on lie in the outer end of axle sleeve be provided with only can for drive lead screw axial gliding driving-disc, the driving-disc on the fixed locating pin that is provided with, the transition adapter sleeve on be provided with locating pin matched with locating hole.

5. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 4, characterized in that: the driving screw rod is provided with a guide block, and the inner side cylindrical surface of the driving disc is provided with a sliding groove matched with the guide block.

6. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 4, characterized in that: the driving disc is provided with a mounting hole which radially penetrates through the side wall of the driving disc, and a plug, a spring and a jacking block are sequentially arranged in the mounting hole from outside to inside along the inner edge.

7. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 6, characterized in that: the jacking block is of a spherical structure, and the driving screw rod is provided with two positioning grooves matched with the jacking block.

8. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 6, characterized in that: the inner of pivot is fixed and is provided with an end plate, the end plate on be provided with and be used for the bearing board of drum center pin, center pin and bearing board between be provided with positioning bolt.

9. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 1, characterized in that: the body frame body include the frame base, the frame base on be provided with the installation roof beam of slant back top slope, the rear end of installation roof beam with be provided with a supporting beam between the frame base, be provided with the mounting panel on the last side of installation roof beam, drive lead screw and guide post be located two the mounting panel between, just the axis of guide post and the axis driven plane of drive lead screw with the installation roof beam perpendicular.

10. The hydraulic hoisting system for the holding pole of the power transmission line tower set according to claim 9, characterized in that: the wire coil is rotatably connected with the mounting beam through a rotating shaft.

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