CN111874745A - High-speed rail trackless constant-tension contact line erecting technology and device - Google Patents

Abstract

The invention belongs to the technical field of high-speed rail construction, and provides a high-speed rail trackless constant-tension contact line erecting technology and an erecting device, wherein the erecting technology mainly comprises nine steps of preparing a line, erecting a traction rope (8) by a traction machine (9), drawing a contact line (17), anchoring the contact line (17), installing a contact line middle anchor, clamping and positioning, detecting flatness and filling construction records; the erection device comprises an anchor lifting anchor column (1) and an anchor dropping anchor column (2) which are connected with a catenary cable (3) in the middle, wherein the catenary cable (3) is connected with a paying-off pulley (5), a contact wire coil (6) is arranged outside the anchor dropping anchor column (2), a tensioner (7) is arranged between the contact wire coil (6) and the anchor dropping anchor column (2), a contact wire (17) is connected with a traction rope (8) after passing through the tensioner (7), and the other end of the traction rope (8) is connected with a tractor (9); according to the invention, the stringing does not need to use the paved steel rail, so that the problem of delay of stringing operation progress caused by short construction period is greatly relieved, the construction efficiency is improved, the construction period is shortened, and the construction quality is improved.

Description

High-speed rail trackless constant-tension contact line erecting technology and device

Technical Field

The invention belongs to the technical field of high-speed rail construction, relates to a high-speed rail trackless constant-tension contact line erecting technology, and further relates to a high-speed rail trackless constant-tension contact line erecting device.

Background

The running speed of the high-speed rail is 250 km/h-350 km/h, so that the requirement on the contact line erection in the high-speed rail contact net system is extremely high. In order to meet the high-speed operation requirement of high-speed rails, the technical regulations for construction of high-speed railway electric traction power supply engineering (total iron construction [2015]47 and Q/CR9609-2015) and the acceptance standards for construction quality of high-speed railway electric traction power supply engineering (TB10758-2018) all require that a contact line is erected by constant tension to ensure that the straightness of the contact line reaches 0.1mm/1m after the contact line is erected, and the existing erection methods all adopt a track-mounted wire erection vehicle such as praise, Tesla FX-5 and the like to carry out contact line erection construction operation. However, the construction operation of installing contact wires by using the rail-mounted stringing vehicle in the prior art mainly has the following defects: (1) in the prior art, a constant tension rail travelling crane (self-wheel running equipment) is adopted to erect a high-speed rail contact line, and the rail travelling crane must run on a steel rail laid in place by a pre-station unit, and belongs to a rail constant tension erection technology. (2) The laying of the steel rail is the last procedure of a unit before the station, and generally the steel rail is laid for a few months before a high-speed railway line is opened, so that the laying time is later, the contact line erection time by using the steel rail by a construction unit after the station is very short, the erection is only the first procedure of the unit after the station, and a plurality of procedures such as hanger installation, suspension adjustment and the like are carried out after the erection, so that the rail laying progress of the unit before the station seriously restricts the contact line erection progress of the construction unit after the station, and the construction period can not be guaranteed. (3) After the unit steel rail before the station is laid, the unit steel rail is often preferentially used for material transportation of the unit rail-mounted vehicle, or the steel rail needs to be accurately adjusted, but a unit after the station is not allowed to use the steel rail to carry out rail constant tension stringing, the problem that the steel rail is seized to occupy resources by adopting the rail constant tension stringing technology and the unit before the station is very large in field coordination workload is solved.

Therefore, in order to solve the problems, the invention provides a high-speed rail trackless constant-tension contact line erecting technology and an erecting device.

Disclosure of Invention

In view of the above disadvantages of the prior art, the present invention provides a technology and an apparatus for erecting a trackless constant tension contact line for a high-speed rail, which are used to solve the technical problems in the prior art that the railed constant tension overhead line is used to compete for the resources occupied by the steel rails with the units before the station and the railway overhead line is severely restricted by the track laying rate of the units before the station.

In order to achieve the above objects and other related objects, the present invention provides a high-speed rail trackless constant tension contact line erecting technology, which mainly comprises the following steps:

s1, preparing stringing;

s2, erecting a traction rope of the tractor;

s3, drawing a contact line;

s4, anchoring a contact line;

s5, contact line anchor dropping;

s6, installing a contact line middle anchor;

s7, positioning the card;

s8, detecting flatness;

and S9, filling the construction record.

Preferably, the preparation of the stringing in S1 mainly includes the following preparation:

(1) compiling a stringing construction scheme and training a stringing person;

(2) checking whether the assembly of the support column, the installation of the traction rope and the compensation device are finished and the technical standards are met;

(3) according to the construction scheme, checking whether the number and the length of the installed wire coil are consistent with those of a construction anchor section, and checking the interference condition of a construction range and the reinforcing condition of a cantilever;

(4) and moving the hydraulic tractor to the rear of the anchor lifting anchor column, moving the tensioner to the rear of the anchor dropping anchor column, and firmly fixing the contact wire coil at the rear of the tensioner.

Preferably, in S2, the method for erecting the traction rope of the tractor includes: the hauling rope is hung below the carrier cable by the cooperation of the paying-off pulley and the S hook, and is led to the position of the tension machine to be connected with the contact line.

Preferably, in S3, setting an initial tension of the tensioner, starting traction by the tractor, observing a traction state when a connection between the traction rope and the contact line reaches a position of the transition column, and increasing the tension of the tensioner to the traction tension when no abnormal traction occurs, wherein the tractor performs constant traction at a traction speed.

Preferably, in S4, the method for anchoring the contact line includes: before the anchor is lifted, the contact wire weight on the side of the anchor lifting anchor column is confirmed to reach the designed height, the contact wire weight is connected with the ratchet wheel, when the end of the contact wire is pulled to a position 5-6 m away from the anchor lifting anchor column, the traction machine stops pulling, the tension of the contact wire is unchanged, and an operator connects the contact wire with the compensation device to complete the anchor lifting work.

Preferably, in S5, the method for contacting the line anchor comprises: before the anchor is dropped, a compensation device and a contact wire balance weight at the end of an anchor column are installed, the contact wire balance weight is lifted to a certain height, an operator connects one end of a hand-moving hoist with a steel wire sleeve to a balance pulley, the other end of the hand-moving hoist is connected with a contact wire through a tightener, the hand-moving hoist is shaken to enable an auxiliary rope of the hand-moving hoist to be stressed, tension of a tensioner is unloaded, the hand-moving hoist is continuously tightened until the contact wire balance weight at the anchor-dropping position and the anchor-dropping position act simultaneously, a gap between a stop piece of a ratchet wheel and the ratchet wheel is 20mm, a broken wire position is measured to be marked, the broken wire is checked again and taken back, the compensation device is connected, the hand-moving hoist is loosened, the tightener is taken.

Preferably, in the step S3, an observer is arranged every 200-300 m during the traction of the contact line.

Preferably, the initial tension is 8KN, the traction tension is 10-12 KN, and the traction speed is 3 Km/h.

Preferably, in S4, the operator connects one end of the hoist with a wire sheath to the balance pulley, connects the other end of the hoist with the contact wire through a tightener, shakes the hoist, and turns the tension to the ratchet wheel, and then connects the contact wire with the compensation device, thereby completing the work of anchoring.

Preferably, in S4, after the contact wire is connected to the compensation device, the manual hoist is not loosened, and after the contact wire is anchored, the ratchet wheel is detached after normal operation.

Preferably, in S5, the height of the contact line weight is raised by the chain block.

The utility model provides a high-speed railway trackless permanent tension contact line erects technical erection equipment, includes anchor post and anchor post that falls, is connected with the messenger between anchor post and the anchor post that falls, the messenger is connected with a plurality of unwrapping wire pulley through the S hook below, the anchor post that falls is equipped with the contact line drum of winding contact line outward, be equipped with the tensioner between contact line drum and the anchor post that falls, the contact line passes through the tensioner after and is connected with the haulage rope, the other end and the tractor of haulage rope are connected.

Preferably, a plurality of conversion columns are uniformly arranged between the anchor lifting anchor column and the anchor dropping anchor column, the lower ends of the conversion columns are fixed on the ground, and the upper ends of the conversion columns are connected with the catenary.

Preferably, the anchor lifting anchor column and the anchor dropping anchor column are both provided with a diverting pulley, and the contact line passes through the diverting pulley and can move on the diverting pulley.

Preferably, the anchor lifting anchor column and the anchor dropping anchor column are both provided with a compensating device.

Preferably, 4 evenly-arranged S hooks are arranged between any two adjacent conversion columns, one end of each S hook is hung on the carrier cable, the other end of each S hook is hooked with a paying-off pulley, and the contact wire passes through the paying-off pulleys and can move on the paying-off pulleys.

As described above, the technology and the device for erecting the high-speed rail trackless constant-tension contact line have the following beneficial effects: in the invention, the trackless constant-tension stringing device is arranged between the two up-and-down tracks or on the whole track bed, and the stringing does not need to utilize the paved steel rail, so that the restriction on the paving progress of a unit before a station is eliminated, and the time resource occupying the track is not required to be contended with the unit before the station, thereby greatly relieving the problem of delay of the stringing operation progress caused by the tension of the construction period, improving the construction efficiency, shortening the construction period, saving the labor and simultaneously improving the construction quality.

Drawings

Fig. 1 shows a schematic structural view of a traction rope mounting structure of a tractor according to the invention.

Fig. 2 shows a schematic drawing of the traction contact line according to the present invention.

FIG. 3 is a schematic view showing the structure of the contact wire anchor of the present invention.

FIG. 4 is a schematic view showing the structure of the contact wire drop anchor of the present invention.

Fig. 5 is an enlarged view of the position a in the present invention.

Description of the element reference numerals

The method comprises the following steps of 1-anchoring anchor column, 2-falling anchor column, 3-catenary cable, 4-S hook, 5-paying-off pulley, 6-contact wire coil, 7-tensioner, 8-traction rope, 9-tractor, 10-conversion column, 11-compensation device, 12-steering pulley, 13-hand hoist, 14-balance pulley, 15-contact wire weight, 16-chain hoist, 17-contact wire and 18-ladder vehicle.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Example 1

Referring to fig. 1-5, the present invention provides a high-speed rail trackless constant tension contact line erection technique, which mainly comprises the following steps:

s1, preparing stringing; the stringing preparation mainly comprises the following preparation steps:

(1) the construction scheme of the stringing is compiled, and the erection personnel are trained to fully know the erection scheme and the erection operation method, so that the erection efficiency is improved, the danger of the erection personnel due to misoperation in the erection process is prevented, and the safety of the erection personnel is ensured.

(2) Checking whether the assembly of the support column, the installation of the traction rope 8 and the compensation device 11 are finished and the technical standards are met; the compensation pulleys in the compensation device 11 should rotate flexibly, the contact line balance weights 15 are arranged in order, the gaps are anchored by 180 degrees, the weight of the contact line balance weight string should meet the design requirements, and the contact line balance weight string must not collide with the anchor lifting anchor column 1 and the anchor falling anchor column 2.

(3) According to the construction scheme, checking whether the number and the length of the installed wire coil are consistent with those of a construction anchor section, and checking the interference condition and the cantilever reinforcement condition of the construction range.

(4) The hydraulic tractor 9 is moved to the rear of the anchor lifting anchor post 1, the tension machine 7 is moved to the rear of the anchor dropping anchor post 2, the contact wire coil 6 is fixedly fixed at the rear of the tension machine 7, the contact wire 17 is connected with the tension machine 7, and the contact wire 17 passes through a pay-off reel of the tension machine 7.

S2, erecting a traction rope 8 of a traction machine 9; the manual ladder adding vehicle 18 is matched to hang the traction rope 8 below the catenary cable 3 through the paying-off pulley 5 and the S hook 4, the traction rope 8 is led to the position of the tension machine 7 to be connected with the contact wire 17, in the process, the upper end of the S hook 4 is firstly hung in the positioning ring on the catenary cable 3, the catenary cable 3 is tensioned downwards, and then the contact wire 17 is placed in the paying-off pulley 5. In the process, the carrier cable 3 is matched according to the anchor section by a factory, and is required to be checked for use during field erection, and a joint is not required. The paying-off pulley 5 is a nylon pulley but is not limited to the nylon pulley. The contact wire 17 must not have a joint.

S3, drawing a contact line 17; setting the initial tension of the tensioner 7 to be 8KN, starting traction by the tractor 9, observing the traction state when the joint of the traction rope 8 and the contact line 17 reaches the position of the conversion column 10, and increasing the tension of the tensioner 7 to 10KN when no abnormal traction occurs, wherein the tractor 9 performs uniform traction at the traction speed of 3 Km/h. Since the closer the monitoring distance, the higher the safety factor, an observer is placed every 200m during the traction of the contact line 17. In the process, due to the fact that the traction speed is low, abnormal conditions generally cannot occur, the connection mode of the connection position between the contact line and the traction rope is a twisting contraction tensioning mode, the situation of pulling off hardly occurs, if the traction is abnormal, the traction is stopped, and the traction is performed again after the abnormal condition is eliminated.

S4, anchoring the contact line 17; before the anchor is lifted, the contact line weight 15 on the side of the anchor lifting anchor column 1 is confirmed to reach the designed height, the contact line weight string is connected with the anti-channeling device through an iron wire, when the end of the contact line 17 is pulled to a position 5m away from the anchor lifting anchor column 1, the traction machine 9 stops pulling, the tension of the contact line 17 is unchanged, an operator connects one end of the hand-moving hoist 13 with the balance pulley 14 through a steel wire sleeve, the other end of the hand-moving hoist 13 is connected with the contact line 17 through a tightener, the hand-moving hoist 13 is shaken, the tension is transferred to a ratchet wheel, and then the contact line 17 is connected with the compensating device 11 to complete the anchor lifting work. After the contact line 17 is connected with the compensation device 11, the manual hoist 13 is not loosened, and the manual hoist 13 is unloaded after the contact line 17 is anchored and the ratchet wheel works normally.

In the process, the compensation device 11 comprises a compensation ratchet wheel, a limiting pipe, a compensation rope, a balance weight rod, a balance weight block and a connecting part. The effect of restriction pipe prevents that the cluster of falling weight sticks together because the influence of external force invades the building limit, and the cluster of falling weight sticks together staple bolt and restriction union coupling through falling. The compensating rope is a multi-strand steel wire connected between the weight string and the carrier cable 3 as well as the contact wire 17. The top of the weight pole is provided with a single-hole welding ring, the bottom of the weight pole is welded with a supporting plate, and the weight pole is hung with a weight block to form a string connected with the line weight. The compensation ratchet wheel is connected with the fixing positions of the two ends of the inner cable of the anchor section and the support. The specific structure of the compensating device 11, the connection relationship between the compensating device 11 and the anchor lifting anchor column 1 and the anchor dropping anchor column 2, and the connection relationship between the compensating device 11 and the contact line 17 are all known in the art, and therefore, the detailed description thereof is omitted in this invention.

S5, anchoring a contact line 17; before the anchor is dropped, a compensation device 11 and a contact wire weight 15 at the end of an anchor column 2 are installed, a chain hoist 16 lifts the contact wire weight to a certain height, an operator uses a steel wire sleeve to connect one end of a hand-moving hoist 13 with a balance pulley 14, the other end of the hand-moving hoist is connected with a contact wire 17 through a tightener, the hand-moving hoist 13 is shaken to enable an auxiliary rope of the hand-moving hoist 13 to be stressed, a tensioner 7 is used for tension unloading, the hand-moving hoist 13 is continuously tightened until the contact wire weights at the anchor-lifting position and the anchor-dropping position act simultaneously, the gap between a stop piece of a ratchet wheel and the ratchet wheel is 20mm, the broken wire position is measured to be marked, the broken wire is taken back after rechecking, the compensation device 11 is connected, the hand-moving hoist 13 is loosened, the tightener is taken down, and the anchor dropping.

S6, installing a contact line middle anchor; and after the contact wire 17 is anchored, installing a contact wire middle anchor, and strictly prohibiting the twisting surface of the contact wire 17 in the installation process.

S7, positioning the card; after the contact wire middle anchor is installed in place, the ratchet wheel is removed to bind the iron wire, then two groups of people clamp and position the iron wire to the anchor falling column from the middle anchor in the opposite direction, and the stress direction of the positioning wire clamp at the positive and negative positioning positions is strictly observed in the process.

S8, detecting flatness; after the positioning and installation are finished, the straightness of the contact line 17 is checked every 300 meters and recorded, and the straightness is not more than 0.1 mm/m.

And S9, filling the construction record.

Example 2

Referring to fig. 1-5, the high-speed rail trackless constant tension contact line erection device comprises an anchor lifting column 1 and an anchor dropping column 2, a catenary cable 3 is connected between the anchor lifting column 1 and the anchor dropping column 2, a line releasing pulley 5 is connected below the catenary cable 3 through an S-hook 4, a contact line coil 6 wound with a contact line 17 is arranged outside the anchor dropping column 2, a tensioner 7 is arranged between the contact line coil 6 and the anchor dropping column 2, the contact line 17 is connected with a traction rope 8 through the tensioner 7, and the other end of the traction rope 8 is connected with a tractor 9. A plurality of conversion columns 10 are uniformly arranged between the anchor lifting anchor column 1 and the anchor dropping anchor column 2. The anchor lifting anchor column 1 and the anchor dropping anchor column 2 are both provided with a diverting pulley 12, and the contact line 17 passes through the diverting pulley 12 and can move on the diverting pulley 12. And the anchor lifting anchor column 1 and the anchor dropping anchor column 2 are both provided with a compensating device 11. 4S hooks 4 which are uniformly arranged are arranged between any two adjacent conversion columns 10, one end of each S hook 4 is hung on the carrier cable 3, the other end of each S hook 4 is hooked with a paying-off pulley 5, and the contact line 17 passes through the paying-off pulleys 5 and can move on the paying-off pulleys 5.

When the tension setting device is used in the embodiment, a contact line constant tension pay-off vehicle is generally adopted for erecting the contact line of the high-speed rail contact network, the contact line 17 is erected with constant tension, the tension setting is generally 10-12 KN according to the requirements of wires, and the pay-off speed is not more than 5 km/h. At present, a contact line 17 constant-tension wire barrow at home and abroad is only suitable for being used under the running condition of a rail vehicle when a rail is in place. In order to solve the technical problem that the contact line 17 cannot be erected when a steel rail section is not laid, the embodiment provides the trackless constant-tension pay-off device of the high-speed rail contact network, which consists of the tension machine 7 and the hydraulic tractor 9, and the device is suitable for erecting the contact line 17 of the high-speed rail at 250km/h and below. The tension machine 7 and the hydraulic traction machine 9 are both provided with power, the traction machine 9 can run the overhead line at a constant speed of 3-5 km/h required by the overhead line of the high-speed railway, and the tension machine 7 can provide constant tension of 0-8 t and can adjust the tension steplessly. When the wiring is needed, the whole device runs to a roadbed closed layer between two upper and lower roads or an integral road bed without laying rails through the power of the whole device; in the process, a wire coil to be erected is placed on a tensioner 7, 10-12 KN constant tension is set according to the requirement of a high-speed railway overhead line, and a tractor 9 operates the overhead line at a constant speed of 3-5 km/h as required by the high-speed railway overhead line; the stringing does not need to utilize the laid steel rail, so that the limitation on the rail laying progress of a unit before the station is eliminated, and the stringing does not need to compete with the unit before the station for occupying the time resource of the rail.

In this example, a 3-YZ × 40B tensioner and a YQ40 tractor were selected according to the wire speed and tension requirements. Wherein, the performance parameters of the 3-YZ multiplied by 40B tensioner are as follows:

(1) and (3) paying-off working condition: maximum tension: 2X 40kN or 1X 80kN

And (3) continuous tension: 2X 35kN or 1X 70kN

Maximum pay-off speed: 5km/h

(2) The wire rewinding working condition is as follows: maximum retractive force: 2 × 40kN or 1 × 80kNYQ40 tractor performance parameters:

(1) maximum traction force: 40kN

(2) Rated traction force: 35kN

The corresponding traction speed is as follows: 2.5km/h

(3) Maximum traction speed: 5km/h

The corresponding traction force: 20kN

In this embodiment, the size of the wheels of the 3-YZ x 40B tension machine and the YQ40 tractor is larger than that of the two rails, and the two rails are just staggered, so that the machine can adapt to the whole track bed.

Aiming at the actual situation that the construction period of the high-speed rail in China is generally very short, the trackless constant-tension erecting technology of the high-speed rail contact line is provided with a trackless constant-tension erecting device as a matched erecting machine. The whole device is placed on an integral track bed without tracks or a roadbed enclosed layer between an upper track and a lower track in the process of stringing, the limitation of track laying progress of a unit before a station is eliminated without using a steel rail with a laid frame, track time resources are not required to be seized by the unit before the station, and the rail-less constant tension frame is changed into rail-less constant tension frame.

According to practical inspection, the contact line erected by the trackless constant-tension stringing device completely meets the requirement of 250km/h speed of a high-speed rail, and is used for the erection construction of the contact line of the expensive high-speed rail, more than 50 anchor sections (the left and right lines 1-16 anchor sections between a new street and a WeChat section, the anchor sections 1-1, 1-2, II-1, II-2, 3, 4, crossing 1 and crossing 2 of the new street station) are erected, and all detection data meet the acceptance standard after the acceptance of a power supply section and the acceptance of a state iron group comprehensive detection vehicle.

In conclusion, the trackless constant-tension stringing device is arranged between the two ascending and descending tracks, the stringing does not need to utilize the paved steel rail, the limitation on the paving progress of the unit in front of the station is eliminated, the time resource occupied by the unit in front of the station is not required to be contended, the problem of delay of the stringing operation progress caused by the condition of short construction period is greatly relieved, the construction efficiency is improved, the construction period is shortened, the labor is saved, and the construction quality is also improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (16)

1. The high-speed rail trackless constant-tension contact line erecting technology is characterized by mainly comprising the following steps of:

s1, preparing stringing;

s2, erecting a traction rope (8) of a traction machine (9);

s3, drawing a contact line (17);

s4, anchoring the contact line (17);

s5, the contact line (17) is anchored;

s6, installing a contact line middle anchor;

s7, positioning the card;

s8, detecting flatness;

and S9, filling the construction record.

2. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: the preparation of the stringing in the S1 mainly comprises the following steps:

(1) compiling a stringing construction scheme and training a stringing person;

(2) checking whether the assembly of the support, the traction rope (8) and the compensation device (11) are finished and the installation accords with the technical standard;

(3) according to the construction scheme, checking whether the number and the length of the installed wire coil are consistent with those of a construction anchor section, and checking the interference condition of a construction range and the reinforcing condition of a cantilever;

(4) the hydraulic tractor (9) is moved to the rear of the anchor lifting anchor column (1), the tensioner (7) is moved to the rear of the anchor dropping anchor column (2), and the contact wire coil (6) is firmly fixed at the rear of the tensioner (7).

3. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: in the step S2, the method for erecting the traction rope (8) of the tractor (9) comprises the following steps: the drawing rope (8) is hung below the carrier cable (3) by the cooperation of the paying-off pulley (5) and the S hook (4), and the drawing rope (8) is led to the position of the tension machine (7) to be connected with the contact line (17).

4. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: in the S3, setting the initial tension of the tensioner (7), starting traction of the tractor (9), observing the traction state when the joint of the traction rope (8) and the contact line (17) reaches the position of the transition column, increasing the tension of the tensioner (7) to the traction tension when the traction is abnormal, and uniformly drawing the tractor (9) at the traction speed.

5. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: in the step S4, the method for anchoring the contact line (17) includes: before anchoring, confirming that a contact line weight (15) on the side of an anchoring anchor column (1) reaches a designed height, connecting the contact line weight (15) with a ratchet wheel, stopping traction by a traction machine (9) when the end part of a contact line (17) is dragged to a position 5-6 m away from the anchoring anchor column (1), keeping the tension of the contact line (17) unchanged, and connecting the contact line (17) with a compensation device (11) by an operator to finish anchoring work.

6. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: in the step S5, the method for anchoring the contact line (17) is as follows: before the anchor is dropped, a compensation device (11) and a contact wire balance weight (15) at the end of an anchor column (2) are installed, the contact wire balance weight is lifted to a certain height, an operator uses a steel wire sleeve to connect one end of a manual hoist (13) with a balance pulley (14), the other end of the manual hoist is connected with a contact wire (17) through a tightener, the manual hoist (13) is shaken to enable an auxiliary rope of the manual hoist to be stressed, the tension of a tensioner (7) is unloaded, the manual hoist (13) is continuously tightened until the contact wire balance weight (15) at the anchor lifting position and the anchor dropping position simultaneously acts, a gap between a stop piece of a ratchet wheel and the ratchet wheel is 20mm, the position of the broken wire is measured to be marked, the broken wire is used as a return head after rechecking, the compensation device (11) is connected, the manual hoist (13) is loosened, the tightener is taken down.

7. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 1, wherein: in the S3, an observer is arranged every 200-300 m in the process of drawing the contact line (17).

8. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 4, wherein: the initial tension is 8KN, the traction tension is 10-12 KN, and the traction speed is 3 Km/h.

9. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 5, wherein: in the S4, an operator connects one end of the hand-moving hoist (13) with the balance pulley (14) through a steel wire sleeve, the other end of the hand-moving hoist (13) is connected with the contact wire (17) through a tightener, the hand-moving hoist (13) is shaken, the contact wire (17) is connected with the compensation device (11) after the tension is transferred to the ratchet wheel, and the anchor lifting work is completed.

10. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 5, wherein: in the S4, after the contact line (17) is connected with the compensation device (11), the manual hoist (13) is not loosened, and after the contact line (17) is anchored, the manual hoist (13) is detached after the ratchet wheel works normally.

11. The technology for erecting the high-speed rail trackless constant-tension contact line according to claim 6, wherein: in the step S5, the height of the contact wire weight string is raised by the chain block (16).

12. An erection device for a high-speed rail trackless constant-tension contact line erection technology as claimed in claim 1, comprising an anchor (1) and an anchor (2), wherein a catenary cable (3) is connected between the anchor (1) and the anchor (2), a plurality of paying-off pulleys (5) are connected below the catenary cable (3) through an S hook (4), and a contact line coil (6) for winding a contact line (17) is arranged outside the anchor (2), characterized in that: a tension machine (7) is arranged between the contact wire coil (6) and the anchor post (2), the contact wire (17) is connected with a traction rope (8) through the tension machine (7), and the other end of the traction rope (8) is connected with a traction machine (9).

13. The erection device for the high-speed rail trackless constant-tension contact line erection technology of claim 12, wherein: a plurality of conversion columns (10) are uniformly arranged between the anchor lifting anchor column (1) and the anchor dropping anchor column (2).

14. The erection device for the high-speed rail trackless constant-tension contact line erection technology of claim 12, wherein: the anchor lifting anchor column (1) and the anchor dropping anchor column (2) are both provided with a diverting pulley (12), and the contact line (17) passes through the diverting pulley (12) and can move on the diverting pulley (12).

15. The erection device for the high-speed rail trackless constant-tension contact line erection technology of claim 12, wherein: and the anchor lifting anchor column (1) and the anchor dropping anchor column (2) are both provided with compensation devices (11).

16. The erection device for the high-speed rail trackless constant-tension contact line erection technology of claim 13, wherein: 4S hooks (4) which are uniformly arranged are arranged between any two adjacent conversion columns (10), one end of each S hook (4) is hung on the carrier cable (3), the other end of each S hook (4) is hooked with a paying-off pulley (5), and the contact wire (17) passes through the paying-off pulley (5) and can move on the paying-off pulley (5).

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