CN111490493A - A kind of multifunctional high-voltage cable hoisting and laying guide arm and its laying method - Google Patents

Abstract

A multifunctional high-voltage cable hoisting and laying guide arm, including a slewing body assembly providing a slewing action, a column assembly providing a supporting action, a folding arm assembly, a multi-stage telescopic arm assembly, an auxiliary extension arm, and a hanging basket for operators to work at heights assembly and control device; the lower part of the rotary body assembly is fixed on the external movable vehicle body, the upper end is fixed on the lower end of the column assembly, the two ends of the folding arm assembly are respectively hinged with the fixed column assembly and the multi-stage telescopic arm assembly, and the folding arm assembly is hinged. A folding control oil cylinder is arranged between the component and the slewing body component or the column component. A folding arm oil cylinder is fixedly installed on one side of the folding arm component. The telescopic end of the folding arm oil cylinder is fixed at the ear seat of the multistage telescopic arm oil cylinder. The built-in oil cylinder drives the telescopic arm to extend and retract, and the front end of the auxiliary extension arm is fixedly connected to the end of the multi-stage telescopic arm assembly; it can lay cables without obstacles, meet the needs of high-altitude operations, reduce auxiliary personnel, and realize mechanized operation.

Description

A kind of multifunctional high-voltage cable hoisting and laying guide arm and its laying method

technical field

The invention relates to railway high-voltage cables, urban rail transit stray cables and professional high-voltage cable hoisting and laying construction workers in the field of national grid construction, and the special construction equipment for mechanized laying of high-voltage cables into cable trenches by means of flatbed trucks. It is a high-voltage cable lifting and laying guide arm.

Background technique

Railway high-voltage cables, urban rail transit stray cables and electric power, substation, and catenary in the construction of the State Grid are specialized in laying high-voltage cables manually. In the trench, complete the laying of high-voltage cables. In particular, the high-voltage cable of the high-speed railway trunk line has a length of more than 3,000 meters and a weight of about 5,000 Kg. Due to the constraints of the construction environment and terrain, 3 safety guards are required to protect and 10 workers to rotate the cable reel. According to the erection position of the cable reel, the required 5-8 people drag the cable into the cable trench. During the cable deployment process, the cable sheath is damaged, the cable bending stress is not released, the finished product protection is not in place, and the construction safety risk is accompanied by it.

When laying high-voltage cables in railway tunnels, tunnel ventilation and lighting, and laying stray cables in urban rail transit, ladders and ladder cars were used in the past, and four people were required to control them. The operators fixed the high-voltage cables to the wall. In view of the above working conditions and to solve the problems of aging construction personnel and low construction efficiency, a multi-functional high-voltage cable hoisting and laying guide arm was developed.

SUMMARY OF THE INVENTION

A multifunctional high-voltage cable hoisting and laying guide arm, including a slewing body assembly providing a slewing action, a column assembly providing a supporting action, a folding arm assembly, a multi-stage telescopic arm assembly, an auxiliary extension arm, and a hanging basket for operators to work at heights assembly and control device; the lower part of the rotary body assembly is fixed on the external movable vehicle body, the upper end is fixed on the lower end of the column assembly, the two ends of the folding arm assembly are respectively hinged with the fixed column assembly and the multi-stage telescopic arm assembly, and the folding arm assembly There is a folding control oil cylinder between the slewing body assembly or the column assembly. One side of the folding arm assembly is fixedly installed with a folding arm oil cylinder for operating the folding arm luffing or adjusting the up and down swing angle of the guide arm. The telescopic end of the folding arm oil cylinder is fixed on the At the ear seat of the multi-stage telescopic arm oil cylinder, the built-in oil cylinder of the multi-stage telescopic arm assembly drives the multi-stage telescopic arm to extend and retract, and the front end of the auxiliary extension arm is fixedly connected with the end of the multi-stage telescopic arm assembly; the number of the folding arm assembly is not less than one. There is no less than one telescopic arm cable limiter on the multi-stage telescopic arm assembly, and a safety wire rope for insurance is arranged between the folding arm assembly and the multi-stage telescopic arm assembly.

Further, the slewing body assembly includes a hydraulic motor, a base plate, a slewing bearing, a hydraulic motor slewing disc, and a slewing body top cover; the hydraulic motor and the inner ring of the slewing bearing are respectively connected with the base plate by bolts; the spline hole of the hydraulic motor slewing disc is connected to the hydraulic The motor spline shaft connection, the hydraulic motor rotary disc, and the top cover of the rotary body are fixedly connected to the slewing bearing through bolts.

Further, the folding control oil cylinder is installed in reverse, that is, the telescopic end of the folding control oil cylinder is connected with the rotary body assembly or the column assembly, and the folding control oil cylinder base is installed on the folding arm assembly to improve the lifting force of the luffing oil cylinder.

Further, the multi-stage telescopic arm assembly has multiple built-in oil cylinders of type HSG80-1700, the oil cylinder is installed in the inner cavity of each stage telescopic arm assembly, the cylinder base of the oil cylinder is fixed on the first stage, and the telescopic end of the piston rod is fixed on the second stage arm In the inner cavity, the other series of telescopic arms are analogous (operate the first section of the oil cylinder to telescopic, and the second section of the telescopic boom to telescopic).

Further, one end of the auxiliary extension arm is fixedly connected to the end of the multi-stage telescopic arm assembly through a triangular plate, and a rotatable universal cable fork is installed on the top of the other end to guide and lift the cable, and is used to cross the pole, designed for pillars.

Further, the hanging basket assembly is an upper and lower telescopic structure, the hanging ring is rectangular, and the upper part is provided with a fan-shaped hole, which is connected with the corresponding shaft on the end of the telescopic arm. Under the upper horizontal support of the hanging basket, open a hole on the horizontal support according to the cross-sectional size of the hanging ring, insert the hanging ring into this hole, and install and lock the two limit posts, the hanging ring is forced to rise, and the horizontal support of the hanging basket hangs on the two limit posts On, conversely, the lifting ring is lowered and retracted.

Further, the structure of the folding arm cable stopper or the telescopic arm cable stopper is that the flat steel is folded into a U shape, the bottom is drilled, the head of the folding arm and the telescopic arm is fixed with bolts, and the hole is drilled above the U shape. , place the buckles at both ends of the nipple belt and the rotatable hollow shaft in it, the function is to limit the outgoing cable and prevent the cable from popping out of the guide arm due to tension.

The beneficial effects and features of the present invention are: (1) the cable reel rotates smoothly at a uniform speed, the cables on the reel are guided into the cable channel, and the number of construction personnel is reduced by more than 5 to 8; (2) there is an obstacle between the flatbed truck and the cable channel When the cable cannot be directly guided into the channel, the auxiliary extension arm is installed on the telescopic arm, the guide arm is lengthened to 9.6 meters, the folding arm is raised to the highest point, and the total length of the telescopic arm is extended. The height of the 9.6-meter flatbed truck is 0.7 meters + the total height of the rotating body column is 2.4 meters. The top of the guide arm exceeds the height of the pole and the catenary column, and the cable can be easily rolled over and dropped into the cable groove to achieve barrier-free cable laying; (3) Equipped with a hanging basket It can also be used for high-altitude work by staff to achieve the effect of one machine with multiple uses.

Description of drawings

1 is a schematic diagram of the overall structure (folded state) of a preferred embodiment of the present invention;

Fig. 2 is the overall structure schematic diagram of the preferred embodiment of the present invention (deployed state);

Fig. 3 is the exploded structure schematic diagram of the rotary body assembly of Fig. 1 (the black solid arrow in the figure is the loading direction);

Fig. 4 is the structural schematic diagram of the column assembly of Fig. 1;

Fig. 5 is the structural representation of the folding arm assembly of Fig. 1;

FIG. 6 is a schematic structural diagram of the multi-stage telescopic boom assembly of FIG. 1;

Fig. 7 is the structural representation of the auxiliary extension arm of Fig. 1;

Fig. 8 is the structural representation of the hanging basket assembly of Fig. 1;

Figure 9 is a schematic diagram of track side laying of bridges and tunnel sections;

Figure 10 is a schematic diagram of bridge and tunnel section crossing track laying;

Figure 11 is a schematic diagram of laying high-voltage cables over the roadbed section;

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

Please refer to Fig. 1-Fig. 2, a multifunctional high-voltage cable lifting and laying guide arm, including a slewing body assembly 1 providing a slewing function, a column assembly 2 providing a supporting function, a folding arm assembly 3, a multi-stage telescopic arm assembly 4, Auxiliary extension arm 5, hanging basket assembly 6 and control device for operators to work at heights; the lower part of the slewing body assembly is fixed on the external movable car body, the upper end is fixed on the lower end of the column assembly 2, and the two ends of the folding arm assembly 3 It is hinged with the fixed column assembly 2 and the multi-stage telescopic arm assembly 4, respectively, and a folding control cylinder 1-1 is arranged between the folding arm assembly 3 and the slewing body assembly 1 or the column assembly 2. One side of the folding arm assembly 3 is useful for fixed installation. The boom cylinder 3-2 is used to operate the boom luffing or adjust the up and down swing angle of the guide arm. The telescopic end of the boom cylinder 3-2 is fixed at the ear seat of the multi-stage telescopic arm cylinder, and the multi-stage telescopic arm built-in oil cylinder drives the telescopic arm. Telescopic, the upper part of the multi-stage telescopic arm assembly 4 is provided with an adjustable cable stopper, and the front end of the auxiliary extension arm 5 is fixedly connected with the end of the multi-stage telescopic arm assembly 4; the folding arm assembly 3 is provided with no less than one folding arm. Cable limiter 3-2; the multi-stage telescopic arm assembly 4 is provided with at least one telescopic arm cable limiter 4-1; there is an insurance between the folding arm assembly 3 and the multi-stage telescopic arm assembly 4 The role of the safety wire rope 4-2.

Referring to FIG. 3 , the slewing body assembly 1 includes a hydraulic motor 11 , a base plate 12 , a slewing bearing 13 , a hydraulic motor slewing plate 14 , and a slewing body top cover 15 ; Connection; hydraulic motor rotary disc 14 spline hole is connected with hydraulic motor 11 spline shaft, hydraulic motor rotary disc 14 and rotary body top cover 15 are fixedly connected with slewing bearing 13 through bolts; operating hydraulic rotary motor can achieve 360° Rotate and lock at any position within the range.

Please refer to FIG. 5 , the structure of the folding arm cable stopper 3-2 or the telescopic arm cable stopper 4-1 is that the flat steel is folded into a U shape, the bottom is drilled, and bolts are used to fix the folding arm and the telescopic arm head In the upper part of the U-shape, drill a hole on the top of the U-shape, place the buckles at both ends of the nylon belt and the hollow shaft in it, and fix it with nails.

The column assembly 2 is welded with Q235 thickness 24 steel plate as shown in the figure, the bottom of the oil cylinder ear seat is welded, the top hinge shaft hole diameter is 50, the shaft is connected with the corresponding hole of the folding arm, the three-side spacing 120 bolt hole diameter 18, with bolt installation and on the top cover of the revolving body. The height from the center of the hinge hole to the top cover of the revolving body is 2.0 meters.

The 3-folding arm assembly is made of HQ70 thickness 4 steel plate welded U-shaped section according to the figure, the hinge diameter of 50 at both ends is connected with the column and the third-stage telescopic arm with a diameter of 50 respectively, the side of the folding arm oil cylinder ear seat is welded, and the middle is drilled to the top The diameter of the connection hole of the lift cylinder earring is 50. The hinge is designed as a four-link structure to increase the torque. The top of the welding cable guide ring fixing frame and the wire rope fixing hole. The structure of the cable guide ring is a quick-installed nylon belt and a diameter of 60 rollers. The diameter of the wire rope is 14. The terminals with holes are crimped at both ends, and the total length is 485 mm. The wire rope terminals are respectively fixed in the corresponding holes of the folding arm and the telescopic arm. It plays a role of safety protection when it is in the state.

The folding control oil cylinder 1-1 is installed in reverse, that is, the telescopic end of the folding control oil cylinder 1-1 is connected to the rotary body assembly 1 or the column assembly 2, and the base of the folding control oil cylinder 1-1 is installed on the folding arm assembly 3 to improve the Luffing cylinder top lift;

The multi-stage telescopic arm assembly 4 has multiple built-in oil cylinders of type HSG80-1700, with a total extension length of 5.4 meters. The built-in oil cylinder is specifically installed in the inner cavity of the telescopic arm assembly, the cylinder base is fixed on the first stage, and the telescopic end of the piston rod is fixed The inner cavity of the second-stage arm, and so on, operate the first section of the telescopic arm to telescopic, and the second section of the telescopic arm to telescopic, and so on; There are three cable guide ring fixing brackets welded on the top of the arm; the structure of the cable guide ring is a quick-install nylon belt and a diameter roller structure, and the telescopic arm and the folding arm can move accordingly according to different needs.

Please refer to Figure 2, Figure 5, Figure 7, Figure 8, one end of the auxiliary extension arm 5 is fixedly connected to the end of the multi-stage telescopic arm assembly 4 through the triangular plate 4-3, and the other end is installed on the top of the universal cable fork 5- 1. It is used to guide and lift cables, and is designed for crossing poles and pillars as shown in Figure 7;

The guide wall is equipped with a hanging basket assembly, which can also be used in the case where the staff needs to work at high altitudes, avoiding the need to configure additional operating equipment, and realizing the effect of one machine with multiple uses. The fan-shaped hole is set to connect with the corresponding shaft on the end of the telescopic arm. The fan-shaped hole can adapt to the vertical posture of the hanging basket. The two limit posts at the bottom are blocked under the upper horizontal support of the hanging basket. Insert the lifting ring into this hole, and install and lock the two limit posts, the lifting ring is forced to rise, and the hanging basket is hung on the two limit posts. The extension arm 5 is welded with a U-shaped section of HQ70 thickness 4 steel plate, with a length of 2.2 meters. The triangular hole at one end of the head is connected and fixed with the corresponding position shaft of the third-stage tail of the telescopic arm, and the total length of the guide arm is extended to 9.6 meters. At the corresponding position axis at the tail of the third stage of the telescopic boom, the hanging basket can be fixed, which can realize high-altitude operation.

The rotary body rotary motor adopts cycloid deceleration motor BM2-250, the speed is between 0-250rpm, the output torque is between 0-470N.m, the output power is 0-10Kw, the maximum pressure is 14Mpa, and the maximum flow rate is 25L/min.

Please refer to Figures 9-11, the described laying method of the multifunctional high-voltage cable hoisting and laying guide arm includes:

(1) Lay on the track side of bridges and tunnel sections; adjust the angle of the column assembly 2, turn it to 30-60° with the line, adjust the swing angle of the folding arm assembly 3 and the length of the multi-stage telescopic arm assembly 4, so that the multi-stage telescopic arm The head of component 4 is to the cable trough, the height from the cable trough is about 1-1.3 meters, and the high-voltage cable is clamped in the cable stopper 3-2 of the folding arm or the cable stopper 4-1 of the telescopic arm, and the cable reel is loaded with the outside The car rotates synchronously (the guide arm is loaded on the external loading car as a whole), the cable 7 is released, the guide arm guides the cable into the direction of the cable slot, and the cable that falls into the cable slot forms tension in the half-folding arm assembly 3 and the multi-stage telescopic arm assembly 4, and the guide arm Guide the cable to the cable trough to complete the laying of the high-voltage cable;

(2) Lay across the track in the bridge and tunnel section; adjust the angle of the column assembly 2, turn it to 20-40° with the line, adjust the swing angle of the folding arm assembly 3, and install the auxiliary extension arm 5 on the multi-stage telescopic arm assembly 4 The corresponding position of the head, adjust the length of the multi-stage telescopic arm assembly 4 so that the total length of the folding arm assembly 3, the multi-stage telescopic arm assembly 4 and the auxiliary extension arm 5 is greater than 7.3 meters, and adjust the rotation angle of the revolving body to make the head of the auxiliary extension arm 5 The cable fork 5-1 is 1-1.3 meters above the cable slot, and the high-voltage cable is clamped on the folding arm cable limiter 3-2, the telescopic arm cable limiter 4-1 and the auxiliary arm cable fork 5-1. In the middle, the cable reel rotates synchronously with the car, and the cable 7 is released. The auxiliary arm cable fork 5-1 guides the cable into the direction of the cable slot, and the cable falling into the cable slot forms tension on the guide arm. Guide the cables to the cable trough in turn to complete the laying of high-voltage cables;

(3) Lay high-voltage cables over the roadbed section; according to the railway design specifications, the cable trough in the roadbed section is designed on the outside of the catenary pillar 9 foundation, and the implementation method is consistent with the laying on the track side of the bridge and tunnel sections; the railway four electricity professional cross-construction, mutual The interference has been insurmountable. After the catenary pillars are assembled, the high-voltage cables are completely laid manually. The implementation method is as follows;

(a) Install the auxiliary extension arm 5 at the corresponding position of the telescopic arm head, adjust the rotation angle of the column to be 30-60° with the line, adjust the angle of the folding arm assembly 3, adjust the multi-stage telescopic arm assembly 4, and adjust the rotating body assembly 1 and The swing angle of the folding arm is so that the cable fork 5-1 on the head of the auxiliary arm spans the top of the catenary strut, the high-voltage cable turns over the catenary column 9 in the cable fork, falls down the folding arm assembly 3, and the cable falls into the cable slot, When the cable spans the column, the external loading truck stops, the cable reel rotates and releases the cable length to meet the spanning height of the guide arm, and the swing angle of the folding arm assembly 3 and the multi-stage telescopic arm assembly 4 are in the line direction after the spanning of the rotating column is completed. When the next pillar is reached, rotate the upright, adjust the swing angle of the folding arm assembly 3 for the next crossing, and reciprocate in this way to complete the crossing and laying of the cable;

(b) According to laying on the track side of bridges and tunnel sections: firstly, spread all the cables to the safe position of the roadbed between the track plate and the catenary pillar 9. After all the cables are laid out, when the empty car returns backwards, adjust the guide. The total length of the arm meets the spanning requirements, manually put the cable near the column into the cable fork 5-1, operate the swing angle of the folding arm assembly 3 and the angle of the slewing body assembly 1, turn the cable over the top of the catenary column 9, and drop the guide arm, The cable then falls into the cable slot, and the column is rotated to make the guide arm go in the same direction as the line.

The use of the folding arm and the telescopic arm structure is beneficial to the compact structure of the guide arm and the free extension. The use of the guide arm to lift the cable saves the car crane shift, and it is used for high-altitude work to improve the operation efficiency, reduce the labor cost, and have a better lifting curve.

Comparison of economic benefits: manual payout: 8 people x 200 yuan / person = 1600 yuan, management fee

1600x25% = 400 yuan, 2000 yuan, according to the operation time of 70 days, the manual payout cost: 210,000 yuan. If there is an obstacle, more than 30 people or even more labor is required, and the efficiency is as low as less than 1Km. per hour.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "parallel", "vertical", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the structural relationship and principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There are also various changes and modifications which fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a multi-functional high tension cable jack-up lays leading arm which characterized in that: the device comprises a revolving body component (1) for providing a revolving action, an upright post component (2) for providing a supporting action, a folding arm component (3), a multi-stage telescopic arm component (4), an auxiliary lengthening arm (5), a hanging basket component (6) for operators to work aloft and a control device; the lower part of the revolving body component is fixed on an external movable vehicle body, the upper end of the revolving body component is fixed at the lower end of the upright post component (2), two ends of the folding arm component (3) are respectively hinged with the fixed upright post component (2) and the multi-stage telescopic arm component (4), a folding control oil cylinder (1-1) is arranged between the folding arm component (3) and the revolving body component (1) or the upright post component (2), a folding arm oil cylinder (3-1) for operating the amplitude of the folding arm or adjusting the vertical swing angle of the guide arm is fixedly installed at one side of the folding arm component (3), the telescopic end of the folding arm oil cylinder (3-1) is fixed at the lug seat (3-3) of the multi-stage telescopic arm oil cylinder, the multi-stage telescopic arm component (4) is internally provided with an oil cylinder for driving the multi-stage telescopic arm to stretch, and the front; the folding arm assembly (3) is provided with at least one folding arm cable limiter (3-2), the multi-stage telescopic arm assembly (4) is provided with at least one telescopic arm cable limiter (4-1), and a safety steel wire rope (4-2) with a safety function is arranged between the folding arm assembly (3) and the multi-stage telescopic arm assembly (4).

2. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: the revolving body component (1) comprises a hydraulic motor (11), a bottom plate (12), a revolving support (13), a hydraulic motor revolving disc (14) and a revolving body top cover (15); the inner rings of the hydraulic motor (11) and the slewing bearing (13) are respectively connected with the bottom plate (12) through bolts; the spline hole of the hydraulic motor rotary disc (14) is connected with the spline shaft of the hydraulic motor (11), and the hydraulic motor rotary disc (14) and the rotary body top cover (15) are fixedly connected with the rotary support (13) through bolts.

3. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: the folding control oil cylinder (1-1) is reversely mounted, namely the telescopic end of the folding control oil cylinder (1-1) is connected with the revolving body component (1) or the upright post component (2), and the base of the folding control oil cylinder (1-1) is mounted on the folding arm component (3) so as to improve the jacking force of the variable amplitude oil cylinder.

4. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: the multi-stage telescopic arm assembly (4) is internally provided with a plurality of oil cylinders with models of HSG80-1700, the oil cylinders are arranged in the inner cavity of each stage of telescopic arm assembly, the base of the cylinder barrel of each oil cylinder is fixed at the first stage, the telescopic end of the piston rod is fixed with the inner cavity of the second stage arm, and the telescopic arms of the rest stages are analogized.

5. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: one end of the auxiliary lengthening arm (5) is fixedly connected with the end part of the multi-stage telescopic arm component (4) through a triangular plate (4-3), and the top of the other end is provided with a rotatable universal cable shifting fork (5-1) for guiding and lifting cables, and the auxiliary lengthening arm is designed for crossing electric poles and struts.

6. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: the hanging basket component (6) is of an up-down telescopic structure, the hanging rings (6-1) are rectangular, fan-shaped holes are formed in the upper portions of the hanging rings and connected with corresponding shafts on the tail ends of telescopic arms, the fan-shaped holes can be adaptive to the vertical postures of the hanging basket, the two limiting columns at the bottom of the hanging basket are blocked below the cross supports at the upper portions of the hanging basket, holes are formed in the cross supports according to the cross section sizes of the hanging rings, the hanging rings are inserted into the holes and are installed and locked with the two limiting columns, the hanging rings are stressed to rise, the hanging basket cross supports are hung.

7. Multifunctional high-voltage cable hoisting and laying guide arm according to claim 1, characterized in that: the folding arm cable limiter (3-2) or the telescopic arm cable limiter (4-1) is structurally characterized in that a flat steel is folded into a U shape, holes are drilled in the bottom of the U shape, the heads of the folding arm and the telescopic arm are fixed through bolts, holes are drilled in the upper portion of the U shape, buckles at the two ends of a nylon pulley belt and a rotatable hollow mandrel (3-21) are arranged in the U shape, and the U-shaped folding arm cable limiter has the functions of limiting a guided cable and preventing the cable from popping out of a guide arm due to tension.

8. Method for the hoisting and laying of a guide arm for multifunctional high-voltage cables according to claim 1, characterized in that it comprises three situations:

(1) laying on the track side of the bridge and the tunnel section; adjusting the angle of the upright post component (2), rotating to form 30-60 degrees with the line, adjusting the swing angle of the folding arm component (3) and the length of the multi-stage telescopic arm component (4), enabling the head of the multi-stage telescopic arm component (4) to be in a cable groove, enabling the height of the multi-stage telescopic arm component to be about 1-1.3 meters away from the cable groove, clamping a high-voltage cable in the folding arm cable limiter (3-2) or the telescopic arm cable limiter (4-1), enabling a cable reel to synchronously rotate along with an external loading vehicle, releasing the cable (7), leading the cable into the direction of the cable groove by a guide arm, enabling the cable falling into the cable groove to form tension on the folding arm component (3) and the multi-stage telescopic arm component (4), and leading the cable to the;

(2) laying on bridge and tunnel sections across tracks; adjusting the angle of a vertical column component (2), rotating to form 20-40 degrees with a line, adjusting the swing angle of a folding arm component (3), installing an auxiliary lengthened arm (5) at the position corresponding to the head of a multi-stage telescopic arm component (4), adjusting the length of the multi-stage telescopic arm component (4), leading the total length of the folding arm component (3), the multi-stage telescopic arm component (4) and the auxiliary lengthened arm (5) to be more than 7.3 meters, adjusting the rotation angle of a rotating body, leading a cable shifting fork (5-1) at the head of the auxiliary lengthened arm (5) to be 1-1.3 meters above a cable groove, clamping a high-voltage cable in a folding arm cable limiter (3-2), a telescopic arm cable limiter (4-1) and an auxiliary arm cable shifting fork (5-1), leading the cable reel to be synchronously rotated along with a vehicle, discharging the cable, leading the auxiliary arm cable shifting fork (5-1) to guide the cable to, the cable falling into the cable groove forms tension on the guide arm, and the cable is guided to the cable groove in sequence along with the forward movement of the external loading vehicle, so that the high-voltage cable laying is completed;

(3) high-voltage cables are laid on the roadbed section in a crossing manner; according to the railway design specification, the roadbed section cable trough is designed on the outer side of the foundation of a contact net support column (9), and the implementation mode is consistent with the implementation mode of laying on the track side of a bridge and a tunnel section; the embodiment is as follows;

(a) installing an auxiliary lengthening arm (5) at a corresponding position of the head of a telescopic arm, adjusting the rotation angle of an upright post to form 30-60 degrees with a line, adjusting the angle of a folding arm component (3), adjusting a multi-stage telescopic arm component (4), adjusting a rotary body component (1) and the swing angle of the folding arm, enabling a cable shifting fork (5-1) at the head of the auxiliary arm to cross the top of a contact net support post, enabling a high-voltage cable to cross the contact net support post (9) in the cable shifting fork, dropping the folding arm component (3), enabling the cable to fall into a cable groove, completing the cable crossing of the support post, stopping an external loading vehicle, enabling the length of the cable to meet the crossing height of a guide arm by rotating a cable reel, completing the crossing of the rotary upright post, enabling the swing angle of the folding arm component (3) and the multi-stage telescopic arm component (4) to follow the line direction, and when reaching the, the cable is laid in a crossing way in a reciprocating way;

(b) the method is implemented by laying on the track side of a bridge and a tunnel section: advancing earlier and putting all the exhibition of cables to the road bed safety position between track board to contact net pillar (9), the whole exhibition back of cables, during the empty wagon return stroke, adjust the guide arm total length and satisfy and stride across the requirement, put into cable shift fork (5-1) with near the cable manual work of pillar, operation folding arm subassembly (3) amplitude of oscillation angle and solid of revolution subassembly (1) angle, cross the top of contact net pillar (9) with the cable, the guide arm falls down, the cable falls into the cable duct along with it, the gyration stand, make guide arm and circuit syntropy, so reciprocal, accomplish the cable and stride across and lay.

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