High-speed railway contact line carrier cable supporting structure with tension monitoring function

Abstract

The invention discloses a carrier cable supporting structure with a tension monitoring function for a high-speed railway contact line, and belongs to the technical field of carrier cable supporting.The structure comprises a first support, a second support, a tension wheel disc, a driving motor and the like, a box is fixedly mounted on the left side of the second support, and the tension wheel disc is arranged below the box; the carrier cable body is wound below the tension wheel disc, the carrier cable body is wound above the first pulley, the right side of the carrier cable body is wound below the second pulley, the tension of the carrier cable body is monitored in real time through the tension wheel disc, the supporting rod, the tension spring and the like, and the tension of the carrier cable body is accurately adjusted by means of a series of transmission parts. The carrier cable support with the tension monitoring function for the high-speed railway contact line has the advantages of automatic tension monitoring and adjustment and accurate transmission and adjustment, can guarantee the stability and reliability of power supply of the high-speed railway contact line, and is suitable for a carrier cable support system of the high-speed railway contact line.

Description

Technical Field

[0001] The present invention relates to the technical field of catenary supports, and specifically to a catenary support structure with a tension monitoring function for high-speed railway contact lines. Background Art

[0002] The high-speed railway contact line can be regarded as the "lifeline" of high-speed railway operation, bearing the important task of transmitting electric energy to high-speed trains. It is mostly made of high-quality conductive materials such as copper alloys, with excellent electrical conductivity, ensuring the stable transmission of strong currents. The contact line needs to be precisely installed, and its height and tension must be strictly controlled to ensure that the pantograph makes close and stable contact with it. Even when the train speed reaches several hundred kilometers per hour, it can continuously and efficiently draw current. To cope with the complex outdoor environment, the contact line also has good wear and corrosion resistance characteristics, enabling it to serve stably for a long time and ensuring the all-weather safe and fast operation of the high-speed railway. The support structure of the high-speed railway contact line and catenary is a key facility to ensure the stable power supply of the high-speed railway. However, when the existing catenary support structure is in use, there are still certain problems:

[0003] The existing catenary structure adopted in high-speed railways controls and adjusts the tension of the contact line through the three-pulley structure of the catenary compensation device, and it is necessary to suspend counterweights to ensure the tension balance of the contact line. In addition, for a high-speed railway trackless constant-tension catenary erection technology and erection device with the application number 202011169149.4, its technical solution includes five steps: catenary erection preparation, catenary starting anchor, catenary erection, catenary dropping anchor, and filling in construction records; the erection device includes a catenary erection vehicle, on which a tension machine is provided. On both sides of the tension machine, a hydraulic wire reel and a boom assembly are respectively provided. A catenary wire reel is provided on the hydraulic wire reel, and the catenary on the catenary wire reel passes through the tension machine and is suspended by the boom assembly.

[0004] However, in the high-speed railway operation system, the stable power supply of the contact line is of crucial importance, and the tension balance of the contact line directly affects the current collection effect of the pantograph and the power supply stability. At present, there are obvious shortcomings in the existing technology. The traditional counterweight design is simple and difficult to accurately adapt to the tension change requirements of the contact line under different working conditions. The air flow disturbance generated by the high-speed train running and the thermal expansion and contraction caused by temperature differences will cause the contact line tension to be unbalanced, but it cannot be automatically adjusted and restored by the counterweight, resulting in poor contact between the pantograph and the contact line, problems such as arcing and power failure. Moreover, the existing technology lacks effective means to monitor the tension of the contact line in real time, and it is difficult for maintenance personnel to detect the tension abnormality in time and take measures to ensure that the contact line is always in a tension balance state, seriously threatening the operation safety and efficiency of the high-speed railway.

[0005] In view of this, in-depth research has been carried out on the above problems, and thus this case has arisen.

[0006] In view of the above problems, an innovative design is carried out on the basis of the original catenary support structure. Summary of the Invention

[0007] The purpose of the present invention is to provide a catenary support structure for high-speed railway contact lines with a tension monitoring function, so as to solve the problems in the above background technology that the counterweight cannot ensure the tension balance of the contact line and it is impossible to monitor the tension of the contact line to ensure its balance state.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A catenary support structure for high-speed railway contact lines with a tension monitoring function includes a first bracket and a second bracket. Upper and lower position on the front side of the first bracket and the second bracket are provided with upper tie rods, and a wrist arm is arranged below the upper tie rods. Insulators are arranged on the rear sides of the upper tie rods and the wrist arm. The catenary body is hung at the connection of the upper tie rods and the wrist arm above the first bracket and the second bracket, and the contact line body is hung at the connection of the upper tie rods and the wrist arm below the first bracket and the second bracket. A suspension string is arranged between the catenary body and the contact line body. A box body is fixedly installed on the left side of the second bracket, and a tension wheel disc is arranged below the box body. The catenary body is wound around the lower part of the tension wheel disc. A straight rack is arranged inside the box body. A first cross frame is fixedly installed below the right side of the second bracket, and a first pulley is fixedly installed below the first cross frame. A second cross frame is arranged on the right side of the second bracket, and a second pulley is installed above the right side of the second cross frame. The catenary body is wound above the first pulley, and the right side of the catenary body is wound below the second pulley.

[0010] Preferably, a support rod is fixedly installed on the upper right side of the tension wheel disc, and a tension spring is hinged and installed on the left side in the middle of the support rod, and the upper end of the tension spring is installed at the bottom of the box body.

[0011] Adopting the above technical solution, the tension spring can provide elastic force for the support rod. When the tension of the catenary body changes, the support rod can swing flexibly under the action of the tension spring, making the support and tension monitoring of the catenary body by the tension wheel disc more sensitive, and enhancing the device's perception ability of tension changes.

[0012] Preferably, a chute is arranged at the upper end of the support rod, and a straight rack is connected and installed at the rear side of the chute above the support rod, and the straight rack is located inside the box body to form a left-right moving structure.

[0013] Adopting the above technical solution, the straight rack connected to the chute at the upper end of the support rod converts the swing of the support rod into the linear movement of the straight rack. This structure is convenient for converting the tension change at the tension wheel disc into a mechanical movement that can control other components, laying a foundation for automatically adjusting the tension of the catenary body subsequently, and improving the feasibility of automatic adjustment of the device.

[0014] Preferably, a switch device is arranged on the left side inside the box body, and the circuit of the switch device is connected to the driving motor. The straight rack moves leftward to touch the switch device to form an opening structure for the driving motor.

[0015] With the above technical solution, the cooperation of the switch device, the straight rack and the driving motor inside the box body enables the driving motor to be started when the straight rack moves leftward to touch the switch device, realizing the automatic start of the adjustment mechanism according to the change of the tension of the catenary body, timely adjusting the tension of the catenary body, and ensuring the power supply stability of the contact wire.

[0016] Preferably, the driving motor is installed in the middle inside the second bracket, and a heat dissipation port is arranged on the front side of the second bracket. The lower output end of the driving motor is connected and installed with a first threaded rod, and the lower part of the first threaded rod is rotatably connected to the inside of the second bracket.

[0017] With the above technical solution, the driving motor is installed inside the second bracket and dissipates heat through the heat dissipation port, ensuring the heat dissipation requirement of the driving motor during operation, preventing damage due to overheating, ensuring its stable operation, and thus guaranteeing the reliability of the entire tension adjustment system.

[0018] Preferably, a second cross frame is threadedly connected to the outside of the first threaded rod, and the left side of the second cross frame is slidably connected to the sliding rod, and the sliding rod is fixedly installed inside the second bracket.

[0019] With the above technical solution, the threaded connection between the first threaded rod and the second cross frame and the sliding connection between the second cross frame and the sliding rod enable the rotation of the driving motor to be converted into a stable linear motion of the second cross frame, accurately controlling the position of the second cross frame, providing stable power transmission and precise position adjustment for adjusting the tension of the catenary body.

[0020] Preferably, a transmission gear is rotatably connected to the front side inside the upper part of the second bracket, and the transmission gear is in tooth engagement with the tooth pattern of the straight rack, and a first bevel gear is connected to the rear side of the transmission gear.

[0021] With the above technical solution, the transmission gear above the second bracket is engaged with the straight rack, converting the linear motion of the straight rack into the rotation of the transmission gear, providing power for the subsequent transmission structure, changing the direction of force transmission at the same time, enriching the transmission mode of the device, and making the coordinated work between components more flexible.

[0022] Preferably, the rear side of the first bevel gear is engaged with a second bevel gear, and the second bevel gear is connected and installed with a second threaded rod above, and the upper end of the second threaded rod is rotatably connected to the top surface inside the second bracket.

[0023] With the above technical solution, the meshing of the first bevel gear and the second bevel gear and the connection with the second threaded rod further change the transmission direction, transmit the rotation of the transmission gear to the second threaded rod, provide power for the lifting of the third cross frame, and realize the multi-component cooperative transmission for the tension adjustment of the catenary body, improving the accuracy of the adjustment.

[0024] Preferably, a third cross frame is threadedly connected to the outside of the second threaded rod, and the left side of the third cross frame is slidably connected to the left inner chute of the second bracket.

[0025] With the above technical solution, the threaded connection between the second threaded rod and the third cross frame and the sliding connection between the third cross frame and the inner chute of the second bracket enable the rotation of the second threaded rod to precisely control the lifting of the third cross frame, thereby accurately adjusting the tension of the catenary body and ensuring good contact between the contact wire and the pantograph.

[0026] Preferably, the end of the catenary body is connected to the third cross frame, and the third cross frame is located on the right side of the second bracket to form a lifting structure.

[0027] With the above technical solution, the end of the catenary body is connected to the third cross frame and the third cross frame forms a lifting structure. By directly changing the tension of the catenary body through the lifting of the third cross frame, the effective adjustment of the tension of the catenary body is realized, ensuring the stability and reliability of the contact wire power supply.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The catenary support structure with a tension monitoring function for the high-speed railway contact wire

[0029] 1. Tension monitoring function: A support rod is fixedly installed on the upper right side of the tension wheel disc, a tension spring is hingedly installed on the left side in the middle of the support rod, and the upper end of the tension spring is installed at the bottom of the box body. A chute is provided at the upper end of the support rod, and a straight rack is connected and installed at the rear side of the chute above the support rod. The straight rack is located inside the box body to form a left-right moving structure. The straight rack connected to the chute at the upper end of the support rod converts the swing of the support rod into a linear movement of the straight rack. This structure facilitates converting the tension change at the tension wheel disc into a mechanical movement that can control other components, laying a foundation for the subsequent automatic adjustment of the tension of the catenary body and improving the feasibility of the automatic adjustment of the device;

[0030] 2. Automatic tension loosening adjustment function: A switch device is arranged on the left side inside the box body, and the circuit of the switch device is connected to the driving motor. The straight rack moves leftward to touch the switch device to form an opening structure for the driving motor. The driving motor is installed in the middle inside the second bracket, and a heat dissipation opening is provided on the front side of the second bracket. The lower output end of the driving motor is connected and installed with a first threaded rod, and the lower part of the first threaded rod is rotatably connected inside the second bracket. The tension wheel disc drives the left and right movement of the straight rack after monitoring the contact cable body, and cooperates with the first pulley and the second pulley to support the contact cable. The straight rack moves leftward to start the driving motor of the lifting power source of the second pulley, and directly changes the tension of the contact cable body through the lifting of the second pulley, realizing the effective adjustment of the tension of the contact cable body and ensuring the stability and reliability of the contact line power supply;

[0031] 3. Automatic tension over-tightening adjustment function: A transmission gear is rotatably connected to the front side inside the upper part of the second bracket, and the transmission gear is meshed with the tooth pattern of the straight rack, and a first bevel gear is connected to the rear side of the transmission gear. The first bevel gear is meshed with a second bevel gear at the rear side, and a second threaded rod is connected and installed above the second bevel gear, and the upper end of the second threaded rod is rotatably connected to the inner top surface of the second bracket. The tension wheel disc drives the left and right movement of the straight rack after monitoring the contact cable body, and cooperates with the first pulley and the second pulley to support the contact cable. The straight rack moves rightward to provide a driving source for the lifting of the third cross frame, and directly changes the tension of the contact cable body through the lifting of the third cross frame, realizing the effective adjustment of the tension of the contact cable body and ensuring the stability and reliability of the contact line power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the front main view structural schematic diagram of the present invention;

[0033] Figure 2 is the front sectional view structural schematic diagram of the present invention;

[0034] Figure 3 is of the present invention Figure 2 the enlarged structural schematic diagram at A in;

[0035] Figure 4 is of the present invention Figure 3 the structural schematic diagram of the rear side of the transmission gear in;

[0036] Figure 5 is the structural schematic diagram of the first bracket of the present invention;

[0037] Figure 6 is the structural schematic diagram of the second bracket of the present invention;

[0038] Figure 7 is the structural schematic diagram of the tension monitoring of the present invention;

[0039] Figure 8 Schematic diagram of the connection structure of the third cross frame of the present invention;

[0040] Figure 9 Front structure schematic diagram of the drive motor of the present invention;

[0041] Figure 10 Three-dimensional structure schematic diagram of the connection of the drive motor of the present invention.

[0042] In the figure: 1. First support; 2. Second support; 3. Insulator; 4. Upper pull rod; 5. Pantograph arm; 6. Contact wire body; 7. Suspension string; 8. Contact line body; 9. Box body; 10. First cross frame; 11. Heat dissipation port; 12. First pulley; 13. Drive motor; 14. First threaded rod; 15. Second cross frame; 16. Slide bar; 17. Second pulley; 18. Tension wheel disc; 19. Tension spring; 20. Support rod; 21. Straight rack; 22. Switch device; 23. Transmission gear; 24. First bevel gear; 25. Second bevel gear; 26. Second threaded rod; 27. Third cross frame. Specific embodiments

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figure 1-10 , the present invention provides a technical solution:

[0045] A catenary support structure for a high-speed railway catenary with a tension monitoring function, including a first support 1 and a second support 2. Upper and lower position on the front side of the first support 1 and the second support 2 are both provided with upper tie rods 4, and a wrist arm 5 is arranged below the upper tie rods 4. Insulators 3 are arranged on the rear sides of the upper tie rods 4 and the wrist arm 5. The catenary body 6 is hung at the connection of the upper tie rods 4 and the wrist arm 5 above the first support 1 and the second support 2. The contact wire body 8 is hung at the connection of the upper tie rods 4 and the wrist arm 5 below the first support 1 and the second support 2. A suspension string 7 is arranged between the catenary body 6 and the contact wire body 8. A box body 9 is fixedly installed on the left side of the second support 2, and a tension pulley 18 is arranged below the box body 9. The catenary body 6 is wound around the lower part of the tension pulley 18. A straight rack 21 is arranged inside the box body 9. A first cross frame 10 is fixedly installed on the right side of the second support 2, and a first pulley 12 is fixedly installed below the first cross frame 10. A second cross frame 15 is arranged on the right side of the second support 2, and a second pulley 17 is installed above the right side of the second cross frame 15. The catenary body 6 is wound above the first pulley 12, and the right side of the catenary body 6 is wound below the second pulley 17.

[0046] A support rod 20 is fixedly installed on the upper right side of the tension pulley 18. A tension spring 19 is hingedly installed on the left side in the middle of the support rod 20, and the upper end of the tension spring 19 is installed at the bottom of the box body 9. A chute is arranged at the upper end of the support rod 20, and a straight rack 21 is connected and installed at the rear side of the chute above the support rod 20. The straight rack 21 is located inside the box body 9 to form a left-right moving structure. A switch device 22 is arranged on the left side inside the box body 9, and the circuit of the switch device 22 is connected to the drive motor 13. When the straight rack 21 moves leftward and touches the switch device 22, it forms an opening structure for the drive motor 13. The support rod 20 on the upper right side of the tension pulley 18 and the hinged tension spring 19. The tension spring 19 can buffer the impact of the tension change of the catenary body 6 on the tension pulley 18, making the operation of the tension pulley 18 smoother and ensuring the accuracy of tension monitoring. The straight rack 21 connected to the chute at the upper end of the support rod 20 can convert the swing of the support rod 20 caused by the tension change of the catenary body 6 into a linear motion, providing a mechanical transmission basis for subsequent automatic tension adjustment and improving the feasibility of automatic adjustment of the device. The switch device 22 inside the box body 9 cooperates with the straight rack 21 and the drive motor 13, and can automatically start the drive motor 13 according to the tension change of the catenary body 6, realizing timely adjustment of the tension of the catenary body 6 and ensuring the stability of catenary power supply.

[0047] The driving motor 13 is installed in the middle inside the second bracket 2, and a heat dissipation port 11 is provided on the front side of the second bracket 2. The lower output end of the driving motor 13 is connected and installed with a first threaded rod 14, and the lower part of the first threaded rod 14 is rotatably connected inside the second bracket 2. A second cross frame 15 is threadedly connected to the outer side of the first threaded rod 14, and the left side of the second cross frame 15 is slidably connected to a slide rod 16, and the slide rod 16 is fixedly installed inside the second bracket 2. The driving motor 13 is installed inside the second bracket 2. Cooperating with the heat dissipation port 11, it effectively solves the heat dissipation problem of the driving motor 13 during operation, extends the service life of the driving motor 13, ensures the stable operation of the entire tension adjustment system. The first threaded rod 14 is threadedly connected to the second cross frame 15, and the second cross frame 15 is slidably connected to the slide rod 16, which can accurately convert the rotational motion of the driving motor 13 into the linear motion of the second cross frame 15, accurately control the position of the second cross frame 15, and then accurately adjust the tension of the catenary body 6.

[0048] The front side inside the upper part of the second bracket 2 is rotatably connected with a transmission gear 23, and the transmission gear 23 is in tooth engagement with a straight rack 21, and a first bevel gear 24 is connected to the rear side of the transmission gear 23. The first bevel gear 24 is meshed and connected with a second bevel gear 25, and a second threaded rod 26 is connected and installed above the second bevel gear 25, and the upper end of the second threaded rod 26 is rotatably connected to the inner top surface of the second bracket 2. A third cross frame 27 is threadedly connected to the outer side of the second threaded rod 26, and the left side of the third cross frame 27 is slidably connected to the left side chute inside the second bracket 2. The end of the catenary body 6 is connected to the third cross frame 27, and the third cross frame 27 forms a lifting structure on the right side of the second bracket 2. The transmission gear 23 above the second bracket 2 is meshed with the straight rack 21, which can change the direction of force transmission, convert the linear motion of the straight rack 21 into the rotation of the transmission gear 23, provide power for the subsequent transmission structure, enrich the transmission mode of the device, and make the cooperation of each component more flexible. The first bevel gear 24 is meshed with the second bevel gear 25 and connected to the second threaded rod 26, further changing the transmission direction, transmitting the rotation of the transmission gear 23 to the second threaded rod 26, realizing the coordinated transmission of multiple components, improving the accuracy of the tension adjustment of the catenary body 6. The second threaded rod 26 is threadedly connected to the third cross frame 27, and the third cross frame 27 is slidably connected to the inner chute of the second bracket 2, which can accurately control the lifting of the third cross frame 27, thereby accurately adjusting the tension of the catenary body 6, ensuring good contact between the contact wire and the pantograph. The end of the catenary body 6 is connected to the third cross frame 27, and the third cross frame 27 forms a lifting structure. By directly changing the height of the third cross frame 27, the tension of the catenary body 6 can be quickly and effectively adjusted to ensure stable high-speed rail power supply.

[0049] Working principle:

[0050] When the present invention is in use, the carrier cable body 6 and the contact wire body 8 are respectively hung at corresponding positions of the first bracket 1 and the second bracket 2, and a certain distance is maintained by the suspension wire 7. When the tension of the carrier cable body 6 changes, the carrier cable body 6 wound around the lower part of the tension wheel disc 18 will drive the tension wheel disc 18 to rotate. The support rod 20 on the upper right side of the tension wheel disc 18 will swing accordingly. The tension spring 19 hinged on the left side in the middle of the support rod 20 will be stretched or contracted according to the swing of the support rod 20 to provide buffering and restoring force. The straight rack 21 connected to the rear side of the chute at the upper end of the support rod 20 will move left and right in the box body 9 along with the swing of the support rod 20. When the tension of the carrier cable body 6 is slack and the change reaches a certain degree, the straight rack 21 moves leftward to touch the switch device 22 on the left side inside the box body 9, and the drive motor 13 connected to the circuit of the switch device 22 is started. The drive motor 13 is installed in the middle inside the second bracket 2, and the first threaded rod 14 connected to its lower output end starts to rotate. The second cross frame 15 threadedly connected to the outside of the first threaded rod 14 moves linearly under the restriction of the slide rod 16. The movement of the second cross frame 15 will change the position and tension of the carrier cable body 6 between the first pulley 12 and the second pulley 17. When the tension of the carrier cable body 6 is too tight, the rightward movement of the straight rack 21 will also drive the transmission gear 23 meshed with its tooth pattern to rotate, and the first bevel gear 24 connected to the rear side of the transmission gear 23 will rotate accordingly. The second bevel gear 25 meshed with the rear side of the first bevel gear 24 drives the second threaded rod 26 connected above to rotate. The third cross frame 27 threadedly connected to the outside of the second threaded rod 26 moves downward in the left chute inside the second bracket 2. Since the end of the carrier cable body 6 is connected to the third cross frame 27, the lifting of the third cross frame 27 directly changes the tension of the carrier cable body 6, thereby realizing the adjustment of the tension of the carrier cable body 6 and ensuring the stability of the contact wire power supply.

[0051] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A catenary cable support structure with a tension monitoring function for a high-speed railway contact line, comprising a first bracket (1) and a second bracket (2), wherein upper pull rods (4) are arranged at upper and lower positions on the front sides of the first bracket (1) and the second bracket (2), and a wrist arm (5) is arranged below the upper pull rod (4), and insulators (3) are arranged on the rear sides of the upper pull rod (4) and the wrist arm (5), a catenary cable body (6) is hung at the connection between the upper pull rod (4) and the wrist arm (5) above the first bracket (1) and the second bracket (2), and a contact line body (8) is hung at the connection between the upper pull rod (4) and the wrist arm (5) below the first bracket (1) and the second bracket (2), and a suspension string (7) is arranged between the catenary cable body (6) and the contact line body (8), characterized in that: A box body (9) is fixedly installed on the left side of the second bracket (2), and a tension wheel (18) is arranged below the box body (9), and the catenary cable body (6) is wound below the tension wheel (18), a spur rack (21) is arranged inside the box body (9), a first cross frame (10) is fixedly installed on the right side of the second bracket (2), and a first pulley (12) is fixedly installed below the first cross frame (10), a second cross frame (15) is arranged on the right side of the second bracket (2), and a second pulley (17) is installed above the right side of the second cross frame (15), the catenary cable body (6) is wound from above the first pulley (12), and the right side of the catenary cable body (6) is wound from below the second pulley (17).

2. A high-speed railway contact line catenary support structure with tension monitoring function according to claim 1, characterized in that: A support rod (20) is fixedly installed on the right side above the tension wheel (18), and a tension spring (19) is hingedly installed on the left side in the middle of the support rod (20), and the upper end of the tension spring (19) is installed on the bottom of the box body (9).

3. The high-speed railway contact line catenary support structure with tension monitoring function according to claim 2, characterized in that: The upper end of the support rod (20) is provided with a slide groove, and a spur rack (21) is connected and installed on the rear side of the slide groove above the support rod (20), and the spur rack (21) is located inside the box body (9) to form a left-right movable structure.

4. A high-speed railway contact line catenary support structure with tension monitoring function according to claim 3, characterized in that: A switch device (22) is arranged on the left side inside the box body (9), and the switch device (22) is connected to the drive motor (13) through a circuit, and the spur rack (21) moves to the left to touch the switch device (22) to form an opening structure for the drive motor (13).

5. A catenary support structure with tension monitoring function for a high-speed railway contact line according to claim 4, characterized in that: The drive motor (13) is installed in the middle of the second bracket (2), and a heat dissipation port (11) is provided on the front side of the second bracket (2). A first threaded rod (14) is connected and installed at the output end below the drive motor (13), and the first threaded rod (14) is rotatably connected to the inside of the second bracket (2) below.

6. A catenary support structure with tension monitoring function for a high-speed railway contact line according to claim 5, characterized in that: The outer side of the first threaded rod (14) is threadedly connected to a second cross frame (15), and the left side of the second cross frame (15) is slidably connected to a sliding rod (16), and the sliding rod (16) is fixedly installed inside the second bracket (2).

7. The high-speed railway contact line catenary support structure with tension monitoring function according to claim 3, characterized in that: A transmission gear (23) is rotatably connected to the front inner side of the upper part of the second bracket (2), and the transmission gear (23) is meshed with the teeth of the spur rack (21), and the rear side of the transmission gear (23) is connected to a first bevel gear (24).

8. The high-speed railway contact line catenary support structure with tension monitoring function according to claim 7, characterized in that: The rear side of the first bevel gear (24) is meshedly connected with a second bevel gear (25), and a second threaded rod (26) is connected and installed above the second bevel gear (25), and the upper end of the second threaded rod (26) is rotatably connected to the inner top surface of the second bracket (2).

9. A catenary support structure with tension monitoring function for a high-speed railway contact line according to claim 8, characterized in that: The outer side of the second threaded rod (26) is threadedly connected to a third cross frame (27), and the left side of the third cross frame (27) is slidably connected to the left side sliding groove inside the second bracket (2).

10. A catenary support structure with tension monitoring function for a high-speed railway contact line according to claim 9, characterized in that: The end of the load-bearing cable body (6) is connected to the third cross frame (27), and the third cross frame (27) is located on the right side of the second bracket (2) to form a lifting structure.

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