Tensioning device for installing an overhead contact line suspension

Abstract

The application provides an electrified contact network elastic sling installation tensioning device, and belongs to the technical field of contact network installation. The device comprises a fixing frame, a winding and unwinding box, a winding frame, a connecting rope, a moving frame, a lifting mechanism, a first hydraulic cylinder, an angle adjusting mechanism and a sling clamping mechanism. The device integrates various mechanical and hydraulic elements, realizes automatic positioning, locking and tensioning of the elastic sling, does not need manual pulling of both ends of the elastic sling for lifting, effectively improves construction efficiency, reduces labor intensity of workers, can realize effective positioning and support, and the elastic sling is not prone to position deviation or loosening during installation, thereby improving stability and safety of the overall structure.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of catenary installation, and specifically discloses an installation and tensioning device for an electrified catenary elastic sling. BACKGROUND

[0002] The catenary elastic sling is a key component for suspending the contact line and supporting the weight thereof, absorbs the vibration generated during train operation by using the elasticity of metal, ensures stable operation of the contact line at a specified height and position, is usually made of high-strength materials such as stainless steel or alloy steel, has excellent fatigue resistance and corrosion resistance, can effectively reduce vibration, position and support the contact line, and ensures good contact between the pantograph of the electric locomotive and the contact line.

[0003] In the existing installation and tensioning process of the electrified catenary elastic sling, the following problems exist:

[0004] 1. The traditional sling installation method often needs manual operation, the two ends of the sling are lifted by pulling, and the two ends of the sling are moved to the installation position, which is not only low in efficiency, but also high in labor intensity;

[0005] 2. Due to the lack of effective positioning and supporting devices, the sling is prone to position deviation or loosening during installation, which affects the stability and safety of the overall structure. SUMMARY

[0006] The application provides an installation and tensioning device for an electrified catenary elastic sling, which at least solves the above technical problem.

[0007] The aforementioned electrified contact network elastic sling tensioning device includes a fixed frame, a winding and unwinding cassette, a winding frame, a connecting cable, a movable frame, a lifting mechanism, a first hydraulic cylinder, an angle adjustment mechanism, and a sling clamping mechanism. The winding and unwinding cassette is fixed to the fixed frame. The winding frame is rotatably installed inside the winding and unwinding cassette. The connecting cable is wound on the winding frame, and both ends of the connecting cable pass through the fixed frame and are connected to the movable frame. The bottom end of the lifting mechanism is connected to the movable frame, and the top end is hinged to the cylinder body of the first hydraulic cylinder. The angle between the first hydraulic cylinder and the lifting mechanism is adjusted by the angle adjustment mechanism. The sling clamping mechanism includes a push plate, a rotating plate, a lower support wheel, a sliding plate, a sliding sleeve, a sliding rod, a support block, and a fixed rod. The system comprises an upper support wheel, a connecting rod, a connecting block, and a push rod. A push plate is fixedly connected to the output rod of the first hydraulic cylinder, and rotating plates are fixed to both sides of the push plate. The inner sides of the two rotating plates are rotatably connected to the lower support wheel, and the outer sides are rotatably connected to sliding plates. Sliding sleeves are fixedly connected to the outer sides of both sliding plates. A sliding rod is slidably connected inside each sliding sleeve. A support block is fixed to the top of each sliding rod. Both ends of the fixed rod are fixedly connected to the two support blocks. The upper support wheel is fixedly sleeved on the fixed rod. Both ends of the connecting rod are fixedly connected to the bottom ends of the two sliding rods, and two connecting blocks are fixedly connected to the connecting rod. The top end of the push rod is hinged to the connecting block, and the bottom end is fixedly connected to the cylinder body of the first hydraulic cylinder.

[0008] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, limit plates are fixed on both sides of the upper support wheel, and arc-shaped grooves that cooperate with the lower support wheel are provided on the limit plates; corresponding slots are opened on the arc-shaped grooves of the lower support wheel and the limit plates.

[0009] In the aforementioned electrified contact network elastic suspension cable tensioning device, springs are respectively fitted on the outer sides of the two sliding rods; the two ends of the springs are fixedly connected to the sliding sleeve and the connecting rod, respectively.

[0010] In the aforementioned electrified contact network elastic suspension cable installation tensioning device, the lifting mechanism includes a support frame, a rotating cylinder, a first self-locking screw, a moving plate, a horizontal plate, side plates, a support plate, and a hinge block; the bottom end of the support frame is fixed to the moving frame, and the top end is fixedly connected to a threaded sleeve; the rotating cylinder is rotatably installed inside the support frame; the first self-locking screw passes through the threaded sleeve and is axially slidably connected to the inner wall of the rotating cylinder; the moving plate slides through the top end of the support frame and is parallel to the first self-locking screw; the horizontal plate is rotatably sleeved outside the first self-locking screw and is fixedly connected to the moving plate, and side plates are arranged opposite each other on both sides of the horizontal plate; a support plate is fixedly connected between the two side plates, and the support plate is parallel to the horizontal plate; a hinge block is hinged to the top surface of the support plate; the hinge block is fixedly connected to the cylinder body of the first hydraulic cylinder.

[0011] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, the lifting mechanism also includes a first motor; the rotating cylinder is driven to rotate by the first motor; the inner wall of the rotating cylinder is provided with a guide groove along the axial direction; the outer wall of the first self-locking screw is fixedly connected with a guide block, and the guide block slides with the guide groove.

[0012] In the aforementioned electrified contact network elastic sling installation tensioning device, the lifting mechanism further includes a rotating rod, a synchronous transmission assembly, a first bevel gear, and a second bevel gear; two rotating rods are rotatably connected to the moving plate; the first bevel gear is fixedly installed on the top of the first self-locking screw; the second bevel gear is fixedly installed on the upper rotating rod and meshes with the first bevel gear; the synchronous transmission assembly and the first self-locking screw are respectively located on both sides of the moving plate; the synchronous transmission assembly includes a synchronous pulley fixedly installed on the rotating rod and a synchronous belt connecting the two synchronous pulleys; the synchronous belt and the side plate are fixedly connected by a fixing plate; T-shaped sliders are fixedly connected to both sides of the horizontal plate; a sliding groove is opened vertically along the side plate, and the sliding groove slides in cooperation with the T-shaped slider.

[0013] In the aforementioned electrified contact network elastic suspension cable installation tensioning device, a baffle and a cover plate are provided between the two side plates, and both the baffle and the cover plate are perpendicular to the support plate; the angle adjustment mechanism includes a fixed block, a second self-locking screw, a moving block, a top rod, a positioning block, and a second motor; two fixed blocks are fixedly connected to the baffle; the two ends of the second self-locking screw are rotatably connected to the two fixed blocks respectively, and the second self-locking screw is driven to rotate by the second motor; the moving block is sleeved on the second self-locking screw; the positioning block is fixed on the cylinder body of the first hydraulic cylinder; the two ends of the top rod are hinged to the moving block and the positioning block respectively.

[0014] In the above-mentioned electrified contact network elastic sling installation tensioning device, a third motor is installed on the winding and unwinding box; the third motor drives the winding frame to rotate; a first traveling mechanism is provided at both ends of the fixed frame; the first traveling mechanism includes a second hydraulic cylinder and a first traveling wheel; the cylinder body of the second hydraulic cylinder is fixedly connected to the fixed frame, and the output rod is fixedly connected to the first traveling wheel.

[0015] In the above-mentioned electrified contact network elastic sling installation tensioning device, the two ends of the moving frame are provided with a second traveling mechanism; the second traveling mechanism includes a third hydraulic cylinder and a second traveling wheel; the cylinder body of the third hydraulic cylinder is fixedly connected to the moving frame, and the output rod is fixedly connected to the second traveling wheel.

[0016] The aforementioned electrified contact wire elastic suspension cable tensioning device also includes a support mechanism; two sets of support mechanisms are symmetrically arranged on both sides of the winding and unwinding box; each set of support mechanisms includes a first support rod, a second support rod, a third support rod, a support wheel, a fourth motor, and a fifth motor; the bottom end of the first support rod is fixedly connected to the fixed frame, the top end of the first support rod is rotatably connected to the bottom end of the second support rod, the top end of the second support rod is rotatably connected to the bottom end of the third support rod, and the top end of the third support rod is rotatably connected to the support wheel; the fourth motor drives the second support rod to rotate around the top end of the first support rod; the fifth motor drives the third support rod to rotate around the top end of the second support rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects.

[0018] The aforementioned device integrates various mechanical and hydraulic components to achieve automatic positioning, locking, and tensioning of the elastic sling. It eliminates the need for manual lifting of both ends of the elastic sling, effectively improving construction efficiency and reducing the labor intensity of workers. It can achieve effective positioning and support, and the elastic sling is less prone to positional shift or loosening during installation, thus improving the stability and safety of the overall structure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a tensioning device installed on the elastic slings of an electrified overhead contact line.

[0021] Figure 2 This is a structural diagram of the supporting mechanism;

[0022] Figure 3 This is a schematic diagram of the winding rack installation.

[0023] Figure 4 This is an assembly diagram of the third support rod and the support wheel;

[0024] Figure 5 This is an assembly diagram of the lifting mechanism, the first hydraulic cylinder, the angle adjustment mechanism, and the sling clamping mechanism.

[0025] Figure 6 This is a schematic diagram of the lifting mechanism;

[0026] Figure 7 This is a schematic diagram of the lifting mechanism from another direction;

[0027] Figure 8 This is a diagram showing the fit between the first self-locking screw and the bevel gear.

[0028] Figure 9 This is a diagram showing the fit between the first self-locking screw and the rotating cylinder;

[0029] Figure 10 This is a schematic diagram of the installation of the synchronous drive assembly;

[0030] Figure 11 This is an assembly diagram of the first hydraulic cylinder, the angle adjustment mechanism, and the sling clamping mechanism;

[0031] Figure 12 This is an assembly diagram of the first hydraulic cylinder and the sling clamping mechanism;

[0032] Figure 13 This is a schematic diagram of the sling clamping mechanism;

[0033] Figure 14 This is a schematic diagram of the installation of the lower support wheel.

[0034] Labels in the diagram: 1. Fixed frame; 2. Winding box; 3. Winding frame; 4. Connecting cable; 5. Moving frame; 6. Support frame; 7. Rotating cylinder; 8. First self-locking screw; 9. Moving plate; 10. Horizontal plate; 11. Rotating rod; 12. Synchronous pulley; 13. Synchronous belt; 14. Side plate; 15. Support plate; 16. Hinge block; 17. First hydraulic cylinder; 18. Push plate; 19. Rotating plate; 20. Lower support wheel; 21. Sliding plate; 22. Sliding sleeve; 23. Sliding rod; 24. Support block; 25. Fixed rod; 26. Upper support wheel; 27. Limiting plate; 28. Connecting rod; 29. ​​Spring; 30. Connecting block; 31. Push rod; 3 2. Baffle; 33. Fixing block; 34. Second self-locking screw; 35. Moving block; 36. Top rod; 37. Positioning block; 38. Second motor; 39. Guide groove; 40. Guide block; 41. Threaded sleeve; 42. First bevel gear; 43. Second bevel gear; 44. T-shaped slider; 45. Slide groove; 46. Second hydraulic cylinder; 47. First traveling wheel; 48. Third motor; 49. First support rod; 50. Second support rod; 51. Third support rod; 52. Support wheel; 53. Fourth motor; 54. Fifth motor; 55. Third hydraulic cylinder; 56. Second traveling wheel; 57. Fixing plate; 58. Cover plate. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This embodiment provides an installation and tensioning device for elastic slings in electrified contact networks, including a fixed frame 1, a winding and unwinding box 2, a winding frame 3, a connecting cable 4, a movable frame 5, a lifting mechanism, a first hydraulic cylinder 17, an angle adjustment mechanism, and a sling clamping mechanism. The winding and unwinding box 2 is fixed on the fixed frame 1. The winding frame 3 is rotatably installed inside the winding and unwinding box 2. The connecting cable 4 is wound on the winding frame 3, and both ends of the connecting cable 4 pass through the fixed frame 1 and are connected to the movable frame 5. The bottom end of the lifting mechanism is connected to the movable frame 5, and the top end is hinged to the cylinder body of the first hydraulic cylinder 17. The angle between the first hydraulic cylinder 17 and the lifting mechanism is adjusted by the angle adjustment mechanism. The sling clamping mechanism includes a push plate 18, a rotating plate 19, a lower support wheel 20, a sliding plate 21, a sliding sleeve 22, a sliding rod 23, a support block 24, a fixed rod 25, an upper support wheel 26, and a connecting cable 17. The system includes a connecting rod 28, a connecting block 30, and a push rod 31. A push plate 18 is fixedly connected to the output rod of the first hydraulic cylinder 17. Rotating plates 19 are fixed to both sides of the push plate 18. The inner sides of the two rotating plates 19 are rotatably connected to the lower support wheel 20, and the outer sides are rotatably connected to the sliding plates 21. Sliding sleeves 22 are fixedly connected to the outer sides of both sliding plates 21. A sliding rod 23 is slidably connected inside each sliding sleeve 22. A support block 24 is fixed to the top of each sliding rod 23. Both ends of a fixed rod 25 are fixedly connected to the two support blocks 24. An upper support wheel 26 is fixedly sleeved on the fixed rod 25. Both ends of the connecting rod 28 are fixedly connected to the bottom ends of the two sliding rods 23, and two connecting blocks 30 are fixedly connected to the connecting rod 28. The top end of the push rod 31 is hinged to the connecting block 30, and the bottom end is fixedly connected to the cylinder body of the first hydraulic cylinder 17.

[0037] The usage process of the above-mentioned electrified contact wire elastic sling tensioning device is as follows:

[0038] Move the device onto the track, pass both ends of the elastic sling through the lower support rollers 20 and upper support rollers 26 on both sides, and support them with the lower support rollers 20. Drag the ends of the elastic sling along the lower support rollers 20 to make them meet the installation requirements. Activate the first hydraulic cylinder 17. The output shaft of the first hydraulic cylinder 17 extends and pushes the push plate 18 upward. The push plate 18 drives the rotating plates 19 on both sides to move upward. The lower support rollers 20 move upward accordingly, while the sliding plates 21 and sliding sleeves 22 on both sides slide upward along the sliding rods 23. The lower support rollers 20 approach the upper support rollers 26 to clamp and lock the ends of the elastic sling. Move the device along the track until the fixed frame 1 corresponds to the midpoint of the installation position of the elastic sling. Rotate the winding frame 3 in the forward direction to unwind the connecting cable 4. Move the moving frames 5 on both sides along the track until the ends of the elastic sling reach the corresponding installation points. The lifting mechanism lifts the elastic sling, and the angle adjustment mechanism adjusts the angle of the first hydraulic cylinder 17 to tension the elastic sling. After meeting the installation requirements, proceed with the installation.

[0039] With the above-mentioned device, there is no need to manually pull the two ends of the elastic sling for lifting, which effectively improves construction efficiency, reduces the labor intensity of workers, and can achieve effective positioning and support. The elastic sling is not prone to positional displacement or loosening during installation, thus improving the stability and safety of the overall structure.

[0040] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, limit plates 27 are fixed on both sides of the upper support wheel 26, and the limit plates 27 are provided with arc-shaped grooves that cooperate with the lower support wheel 20; the lower support wheel 20 and the arc-shaped grooves of the limit plates 27 are both provided with corresponding slots.

[0041] The arc-shaped groove on the limiting plate 27 is used to restrict the position of the lower support wheel 20. When the lower support wheel 20 moves into the arc-shaped groove, it indicates that the clamping of the end of the elastic sling is in place. The interlocking groove on the arc-shaped groove and the corresponding slot on the lower support wheel 20 ensures a tight fit between the limiting plate 27 and the lower support wheel 20, increasing the friction between them and preventing the lower support wheel 20 from rotating. This ensures the clamping tightness of the end of the elastic sling and prevents it from falling off. If the position of the end of the elastic sling needs to be adjusted again during installation, the lower support wheel 20 is moved downwards to separate from the limiting plate 27, and then the end of the elastic sling is dragged along the lower support wheel 20.

[0042] In the aforementioned tensioning device for the elastic suspension cable of the electrified contact network, springs 29 are respectively fitted on the outer sides of the two sliding rods 23; the two ends of the springs 29 are fixedly connected to the sliding sleeve 22 and the connecting rod 28, respectively. The sliding sleeve 22 is supported and reset by the springs 29.

[0043] In the aforementioned electrified contact network elastic suspension cable installation tensioning device, the lifting mechanism includes a support frame 6, a rotating cylinder 7, a first self-locking screw 8, a moving plate 9, a horizontal plate 10, side plates 14, a support plate 15, and a hinge block 16. The bottom end of the support frame 6 is fixed to the moving frame 5, and the top end is fixedly connected to a threaded sleeve 41. The rotating cylinder 7 is rotatably installed inside the support frame 6. The first self-locking screw 8 passes through the threaded sleeve 41 and is axially slidably connected to the inner wall of the rotating cylinder 7. The moving plate 9 slides through the top end of the support frame 6 and is parallel to the first self-locking screw 8. The horizontal plate 10 is rotatably sleeved outside the first self-locking screw 8 and is fixedly connected to the moving plate 9. Side plates 14 are arranged opposite each other on both sides of the horizontal plate 10. A support plate 15 is fixedly connected between the two side plates 14, and the support plate 15 is parallel to the horizontal plate 10. A hinge block 16 is hinged to the top surface of the support plate 15. The hinge block 16 is fixedly connected to the cylinder body of the first hydraulic cylinder 17.

[0044] The rotating cylinder 7 is driven to rotate. Since the first self-locking screw 8 is axially slidingly connected to the inner wall of the rotating cylinder 7 and threadedly connected to the threaded sleeve 41, the first self-locking screw 8 can move up and down while rotating, thereby driving the horizontal plate 10 and the moving plate 9 to move up and down, thus realizing the lifting and lowering of the first hydraulic cylinder 17 and the sling clamping mechanism. The moving plate 9 slides through the top of the support frame 6 and is parallel to the first self-locking screw 8, which can improve the stability of the horizontal plate 10 when it is raised and lowered.

[0045] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, the lifting mechanism also includes a first motor; the rotating cylinder 7 is driven to rotate by the first motor; the inner wall of the rotating cylinder 7 is provided with a guide groove 39 along the axial direction; the outer wall of the first self-locking screw 8 is fixedly connected with a guide block 40, and the guide block 40 slides with the guide groove 39 to realize the axial sliding connection between the first self-locking screw 8 and the inner wall of the rotating cylinder 7.

[0046] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, the lifting mechanism also includes a rotating rod 11, a synchronous transmission assembly, a first bevel gear 42, and a second bevel gear 43; two rotating rods 11 are rotatably connected to the moving plate 9; the first bevel gear 42 is fixedly installed on the top of the first self-locking screw 8; the second bevel gear 43 is fixedly installed on the upper rotating rod 11 and meshes with the first bevel gear 42; the synchronous transmission assembly and the first self-locking screw 8 are respectively located on both sides of the moving plate 9; the synchronous transmission assembly includes a synchronous wheel 12 fixedly installed on the rotating rod 11 and a synchronous belt 13 connecting the two synchronous wheels 12; the synchronous belt 13 and the side plate 14 are fixedly connected by a fixing plate 57; T-shaped sliders 44 are fixedly connected to both sides of the horizontal plate 10; a sliding groove 45 is vertically opened on the side plate 14, and the sliding groove 45 slides with the T-shaped slider 44 to achieve limiting.

[0047] When the first self-locking screw 8 rotates, it drives the first bevel gear 42 to rotate, the second bevel gear 43 meshing with the first bevel gear 42 to rotate, and the synchronous pulley 12 coaxially connected to the second bevel gear 43 to rotate, thereby realizing the rotation of the synchronous belt 13. The side plate 14, which is fixedly connected to the synchronous belt 13 through the fixing plate 57, rises and falls accordingly, realizing the multi-stage lifting of the first hydraulic cylinder 17 and the sling clamping mechanism. Multi-stage lifting can reduce the space occupied by the device in the non-working state, while ensuring the lifting height when installing the elastic sling.

[0048] In the above-mentioned electrified contact network elastic suspension cable installation tensioning device, a baffle 32 and a cover plate 58 are provided between the two side plates 14, and both the baffle 32 and the cover plate 58 are perpendicular to the support plate 15; the angle adjustment mechanism includes a fixed block 33, a second self-locking screw 34, a moving block 35, a top rod 36, a positioning block 37, and a second motor 38; two fixed blocks 33 are fixedly connected to the baffle 32; the two ends of the second self-locking screw 34 are rotatably connected to the two fixed blocks 33 respectively, and the second self-locking screw 34 is driven to rotate by the second motor 38; the moving block 35 is sleeved on the second self-locking screw 34; the positioning block 37 is fixed on the cylinder body of the first hydraulic cylinder 17; the two ends of the top rod 36 are hinged to the moving block 35 and the positioning block 37 respectively.

[0049] The second self-locking screw 34 rotates, causing the moving block 35 to rise and fall, driving the first hydraulic cylinder 17 to swing up and down to adjust the angle, moving the end of the elastic sling to the corresponding installation point, and tensioning the elastic sling.

[0050] In the above-mentioned electrified contact network elastic sling installation tensioning device, a third motor 48 is installed on the winding box 2; the third motor 48 drives the winding frame 3 to rotate; a first traveling mechanism is provided at both ends of the fixed frame 1; the first traveling mechanism includes a second hydraulic cylinder 46 and a first traveling wheel 47; the cylinder body of the second hydraulic cylinder 46 is fixedly connected to the fixed frame 1, and the output rod is fixedly connected to the first traveling wheel 47.

[0051] In the above-mentioned electrified contact network elastic sling installation tensioning device, the two ends of the movable frame 5 are provided with a second traveling mechanism; the second traveling mechanism includes a third hydraulic cylinder 55 and a second traveling wheel 56; the cylinder body of the third hydraulic cylinder 55 is fixedly connected to the movable frame 5, and the output rod is fixedly connected to the second traveling wheel 56.

[0052] The extension length of the output shaft in the second hydraulic cylinder 46 and the third hydraulic cylinder 55 can be adjusted according to the width of the track to accommodate tracks of different widths.

[0053] The aforementioned electrified contact wire elastic suspension cable tensioning device also includes a support mechanism; two sets of support mechanisms are symmetrically arranged on both sides of the winding and unwinding box 2; each set of support mechanisms includes a first support rod 49, a second support rod 50, a third support rod 51, a support wheel 52, a fourth motor 53, and a fifth motor 54; the bottom end of the first support rod 49 is fixedly connected to the fixed frame 1, the top end of the first support rod 49 is rotatably connected to the bottom end of the second support rod 50, the top end of the second support rod 50 is rotatably connected to the bottom end of the third support rod 51, and the top end of the third support rod 51 is rotatably connected to the support wheel 52; the fourth motor 53 drives the second support rod 50 to rotate around the top end of the first support rod 49; the fifth motor 54 drives the third support rod 51 to rotate around the top end of the second support rod 50.

[0054] The middle part of the elastic sling is placed on the support wheel 52. During the installation and tensioning of the elastic sling, the fourth motor 53 starts to drive the second support rod 50 to rotate around the top of the first support rod 49, and the fifth motor 54 starts to drive the third support rod 51 to rotate around the top of the second support rod 50. This allows the support wheel 52 to support the middle part of the elastic sling, thereby improving the stability of the elastic sling installation process and further enhancing the adaptability and stability of the elastic sling under different working conditions, thus ensuring the safe operation of the entire electrified contact network.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tensioning device for installing elastic suspension cables of an electrified contact network, characterized in that, Includes a fixed frame (1), a winding and unwinding box (2), a winding frame (3), a connecting cable (4), a moving frame (5), a lifting mechanism, a first hydraulic cylinder (17), an angle adjustment mechanism, and a sling clamping mechanism; The winding and unwinding box (2) is fixed on the fixing frame (1); The winding frame (3) is rotatably installed inside the winding box (2); The connecting cable (4) is wound around the winding frame (3), and the two ends of the connecting cable (4) pass through the fixed frame (1) and are connected to the movable frame (5); The bottom end of the lifting mechanism is connected to the movable frame (5), and the top end is hinged to the cylinder body of the first hydraulic cylinder (17). The angle between the first hydraulic cylinder (17) and the lifting mechanism is adjusted by an angle adjustment mechanism; The sling clamping mechanism includes a push plate (18), a rotating plate (19), a lower support wheel (20), a sliding plate (21), a sliding sleeve (22), a sliding rod (23), a support block (24), a fixing rod (25), an upper support wheel (26), a connecting rod (28), a connecting block (30), and a push rod (31). The push plate (18) is fixedly connected to the output rod of the first hydraulic cylinder (17), and rotating plates (19) are fixed on both sides of the push plate (18). The inner sides of the two rotating plates (19) are rotatably connected to the lower support wheel (20), and the outer sides are rotatably connected to the sliding plate (21); Sliding sleeves (22) are fixedly connected to the outer sides of both sliding plates (21); Each sleeve (22) has a sliding rod (23) inside it; Each slide bar (23) has a support block (24) fixed at its top. The two ends of the fixing rod (25) are respectively fixedly connected to the two support blocks (24); The upper support wheel (26) is fixedly sleeved on the fixed rod (25); The two ends of the connecting rod (28) are fixedly connected to the bottom ends of the two sliding rods (23), and two connecting blocks (30) are fixedly connected to the connecting rod (28). The top end of the push rod (31) is hinged to the connecting block (30), and the bottom end is fixedly connected to the cylinder body of the first hydraulic cylinder (17).

2. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, Both sides of the upper support wheel (26) are fixed with limit plates (27), and the limit plates (27) are provided with arc-shaped grooves that cooperate with the lower support wheel (20); The lower support wheel (20) and the limiting plate (27) both have corresponding slots on their arc-shaped grooves.

3. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, Springs (29) are respectively fitted on the outer sides of the two sliding rods (23); The two ends of the spring (29) are fixedly connected to the sliding sleeve (22) and the connecting rod (28) respectively.

4. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, The lifting mechanism includes a support frame (6), a rotating cylinder (7), a first self-locking screw (8), a moving plate (9), a horizontal plate (10), a side plate (14), a support plate (15), and a hinge block (16). The bottom end of the support frame (6) is fixed on the movable frame (5), and the top end is fixedly connected with a threaded sleeve (41). A rotating cylinder (7) is rotatably installed inside the support frame (6); The first self-locking screw (8) passes through the threaded sleeve (41) and is axially slidably connected to the inner wall of the rotating cylinder (7); The movable plate (9) slides through the top of the support frame (6) and is parallel to the first self-locking screw (8). The horizontal plate (10) is rotatably sleeved outside the first self-locking screw (8) and fixedly connected to the moving plate (9). Side plates (14) are provided on both sides of the horizontal plate (10). A support plate (15) is fixedly connected between the two side plates (14), and the support plate (15) is parallel to the cross plate (10); The top surface of the support plate (15) is hinged to a hinge block (16). The hinge block (16) is fixedly connected to the cylinder body of the first hydraulic cylinder (17).

5. The electrified contact wire elastic suspension cable installation tensioning device according to claim 4, characterized in that, The lifting mechanism also includes a first motor; The rotating cylinder (7) is driven to rotate by a first motor; The inner wall of the rotating cylinder (7) is provided with a guide groove (39) along the axial direction. The outer wall of the first self-locking screw (8) is fixedly connected to a guide block (40), and the guide block (40) slides in conjunction with the guide groove (39).

6. The electrified contact wire elastic suspension cable installation tensioning device according to claim 4, characterized in that, The lifting mechanism also includes a rotating rod (11), a synchronous transmission assembly, a first bevel gear (42), and a second bevel gear (43); The movable plate (9) is rotatably connected to two rotating rods (11). The first bevel gear (42) is fixedly installed on the top of the first self-locking screw (8); The second bevel gear (43) is fixedly mounted on the rotating rod (11) located above, and meshes with the first bevel gear (42); The synchronous transmission assembly and the first self-locking screw (8) are located on both sides of the moving plate (9); The synchronous transmission assembly includes a synchronous pulley (12) fixedly mounted on a rotating rod (11) and a synchronous belt (13) connecting the two synchronous pulleys (12). The timing belt (13) and the side plate (14) are fixedly connected by a fixing plate (57); T-shaped sliders (44) are fixedly connected to both sides of the horizontal plate (10). The side plate (14) has a vertical groove (45) on its upper edge, and the groove (45) slides in cooperation with the T-shaped slider (44).

7. The electrified contact wire elastic suspension cable installation tensioning device according to claim 6, characterized in that, A baffle (32) and a cover plate (58) are provided between the two side plates (14), and both the baffle (32) and the cover plate (58) are perpendicular to the support plate (15). The angle adjustment mechanism includes a fixed block (33), a second self-locking screw (34), a moving block (35), a push rod (36), a positioning block (37), and a second motor (38); The baffle (32) is fixedly connected to two upper and lower fixing blocks (33); The two ends of the second self-locking screw (34) are rotatably connected to two fixed blocks (33) respectively, and the second self-locking screw (34) is driven to rotate by the second motor (38); The movable block (35) is sleeved on the second self-locking screw (34); The positioning block (37) is fixed on the cylinder body of the first hydraulic cylinder (17); The two ends of the top rod (36) are hinged to the moving block (35) and the positioning block (37), respectively.

8. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, A third motor (48) is installed on the winding and unwinding box (2); The third motor (48) drives the winding frame (3) to rotate; The fixed frame (1) is provided with a first walking mechanism at both ends; The first traveling mechanism includes a second hydraulic cylinder (46) and a first traveling wheel (47); The cylinder body of the second hydraulic cylinder (46) is fixedly connected to the fixed frame (1), and the output rod is fixedly connected to the first traveling wheel (47).

9. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, The two ends of the mobile frame (5) are provided with a second traveling mechanism; The second traveling mechanism includes a third hydraulic cylinder (55) and a second traveling wheel (56); The cylinder body of the third hydraulic cylinder (55) is fixedly connected to the moving frame (5), and the output rod is fixedly connected to the second traveling wheel (56).

10. The electrified contact wire elastic suspension cable installation tensioning device according to claim 1, characterized in that, It also includes supporting institutions; Two sets of support mechanisms are symmetrically arranged on both sides of the winding and unwinding box (2); Each support mechanism includes a first support rod (49), a second support rod (50), a third support rod (51), a support wheel (52), a fourth motor (53), and a fifth motor (54). The bottom end of the first support rod (49) is fixedly connected to the fixed frame (1), the top end of the first support rod (49) is rotatably connected to the bottom end of the second support rod (50), the top end of the second support rod (50) is rotatably connected to the bottom end of the third support rod (51), and the top end of the third support rod (51) is rotatably connected to a support wheel (52). The fourth motor (53) drives the second support rod (50) to rotate around the top of the first support rod (49); The fifth motor (54) drives the third support rod (51) to rotate around the top of the second support rod (50).

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