Track ladder truck overturn-preventing device for overhead line system construction

Abstract

The utility model discloses a track ladder truck anti-overturning device for overhead line system construction, and relates to the technical field of overhead line system construction equipment. The anti-tilting device comprises a telescopic supporting rod and two anti-tilting assemblies, each anti-tilting assembly comprises a fixing sleeve, a sliding piece and a stabilizing wheel, and the fixing sleeves are fixed to the bottoms of the two ends of the telescopic supporting rod; one ends of the two sliding pieces are slidably connected with the fixing sleeves in the width direction of the track; the two stabilizing wheels are rotationally installed at the other ends of the two sliding pieces correspondingly, and the rolling face of each stabilizing wheel abuts against the inner side face of the bottom of the rail head of the corresponding rail. And the two groups of ladder vehicle connecting assemblies are respectively fixed at the tops of the two ends of the telescopic supporting rod and are connected with the longitudinal rods. By adjusting the length of the telescopic supporting rod, the ladder trolley connecting assemblies on the two sides can be adapted to ladder trolleys of different sizes, the ladder trolley connecting assemblies on the two sides are connected with the longitudinal rods on the ladder trolley chassis, and the ladder trolleys are prevented from deviating in the width direction of the track and derailing and overturning.

Description

Technical Field

[0001] This utility model relates to the field of overhead contact line construction equipment technology, and more specifically to an anti-tipping device for a track ladder car used in overhead contact line construction. Background Technology

[0002] In railway construction, overhead contact line ladders are widely used in various aspects of overhead contact line work. An overhead contact line ladder consists of rail wheels, a chassis, a support structure, and a working platform on top of the support. The ladder can move along the rails via the rail wheels to perform work at different locations. The chassis is typically a square frame structure formed by four connecting rods, while the support structure is a trapezoidal structure wider at the bottom and narrower at the top. However, due to the high speed and height of the ladder, even slight swaying at the bottom can cause significant shaking of the upper working platform, posing a safety hazard. Currently, ladders are typically locked to the rails using claw-type rail clamps. After work is completed, the clamps are released, and the ladder is manually pushed to the next work position for further work. However, without the assistance of rail clamps and with manual pushing, the ladder is highly susceptible to derailment, causing it to tip over.

[0003] A utility model patent with application number CN201922099339.2 discloses a railway ladder car anti-tipping device, which includes a tilt stopper and a frame fixing mechanism. The frame fixing mechanism includes an overlapping rod attached to the chassis of the railway ladder car and a connecting member disposed below the overlapping rod. The connecting member is fixed to the tilt stopper. The tilt stopper is installed between the rails and includes a connecting rod and inclined pulleys respectively disposed at the lower sides of both ends of the connecting rod. The tilt stopper is fixed to the connecting member through the connecting rod. The inclined pulley includes an inclined rod and a pulley disposed at the end of the inclined rod, and the surface of the pulley contacts the inner side of the bottom of the rail head of the rail on the same side. It utilizes the cooperation of the overlapping rod and the tilt stopper to press the ladder car onto the rail, increasing the fastening force between the ladder car and the rail, and preventing the ladder car from derailing or tipping over. However, the two ends of the lap rod are only overlapped and pressed on the longitudinal bars of the ladder car chassis. The lap rod and the ladder car are prone to relative sliding in the track width direction, which makes it impossible to press the ladder car tightly, resulting in the ladder car overturning. In addition, the length of the lap rod is limited and cannot be used for ladder cars of different widths.

[0004] Therefore, how to provide a stable anti-tipping device for overhead contact line operation ladders that can adapt to different sizes is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention aims to provide an anti-tipping device for a track ladder car used in overhead contact line construction, so as to at least partially solve the problems in the prior art where the anti-tipping device and the ladder car easily slide in the track width direction, thus failing to press the ladder car tightly, which leads to the ladder car overturning, and the overlapping rod length is limited, making it unsuitable for ladder cars of different widths.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An anti-tipping device for a track ladder trolley used in overhead contact line construction, the ladder trolley comprising a chassis, a support frame, and an operating platform connected sequentially from bottom to top, and track wheels installed on both sides of the chassis for traveling on the track. The chassis is a frame structure formed by connecting at least two horizontal bars arranged along the width direction of the track and two vertical bars arranged along the length direction of the track, including:

[0008] A telescopic support rod, wherein the telescopic direction of the telescopic support rod is arranged along the width direction of the track;

[0009] Two sets of anti-tilt components, each set of anti-tilt components includes a fixed sleeve, a sliding member and a stabilizing wheel. The fixed sleeve is fixed to the bottom of both ends of the telescopic support rod. One end of each of the two sliding members is slidably connected to the fixed sleeve along the width direction of the track. The two stabilizing wheels are rotatably installed at the other ends of the two sliding members, and the rolling surface of each stabilizing wheel abuts against the inner side of the bottom of the corresponding track head.

[0010] Two sets of ladder truck connection assemblies are respectively fixed to the top of both ends of the telescopic support rod and connected to the longitudinal rod.

[0011] The beneficial effects that this utility model can achieve are: adjusting the length of the telescopic support rod can adapt to different sizes of ladder cars, connecting the ladder car connecting components on both sides to the longitudinal rods on the ladder car chassis, preventing the ladder car from derailing and overturning along the width of the track, and further adjusting the position of the stabilizing wheel can adapt to different sizes of tracks, thereby improving the stability of the ladder car when it travels on the track and preventing the ladder car from overturning.

[0012] Furthermore, the telescopic support rod includes a fixed support rod, a sliding support rod, and a locking screw. A slot is provided at one end of the fixed support rod. The sliding support rod is slidably inserted into the slot along the axial direction of the fixed support rod. The tail end of the locking screw passes perpendicularly through the side wall of the fixed support rod and is limited and connected to the sliding support rod. The two fixing sleeves and the two sets of ladder truck connecting assemblies are respectively fixed at the bottom and top of the fixed support rod and the sliding support rod at opposite ends.

[0013] Furthermore, the sliding support rod includes a first rod and a second rod with an outer diameter larger than the first rod. One end of the first rod is slidably inserted into the slot. One end of the second rod is fixed to the other end of the first rod, and the second rod has the same outer diameter as the fixed support rod. The fixed sleeve and the ladder truck connecting assembly corresponding to the sliding support rod are respectively fixed to the bottom and top of the other end of the second rod.

[0014] Furthermore, a first driving assembly is provided to drive the sliding support rod to slide. The first driving assembly includes a first driving part, a first gear and a rack. A slide block is fixed on the second rod body. The slide block has a groove arranged along the axial direction of the fixed support rod. The first driving part is mounted on the slide block. The first gear is connected to the output end of the first driving part. One end of the rack is fixed to the fixed support rod body, and the other end is slidably connected to the groove and meshes with the first gear for transmission.

[0015] Furthermore, the sliding member includes an inner sleeve and a diagonal brace. One end of the inner sleeve is slidably connected to the inner sidewall of the corresponding fixed sleeve, and one end of the diagonal brace is fixed to the other end of the inner sleeve, while the other end is inclined downward. The axle of the stabilizing wheel is coaxially arranged with the diagonal brace and rotatably connected to the other end of the diagonal brace.

[0016] Furthermore, the angle between the diagonal brace and the inner sleeve is 153°.

[0017] Furthermore, the anti-tilt assembly also includes a fastening screw for locking the inner sleeve. The side wall of the fixed sleeve has an elongated adjustment hole arranged along the width direction of the track in the length direction. The inner sleeve has a threaded hole. The tail end of the fastening screw passes through the elongated adjustment hole and the threaded hole and is threadedly connected.

[0018] Furthermore, the anti-tilt assembly also includes a second drive assembly for driving the inner sleeve to slide. The second drive assembly includes a second drive part, a second gear, and a gear groove. An elongated sliding hole with its length arranged along its axial direction is provided on the side wall of the inner sleeve. The second drive part is installed on the outer side wall of the fixed sleeve, and its output shaft extends through the elongated sliding hole into the inner cavity of the inner sleeve. The second gear is placed in the inner cavity of the inner sleeve and fixed on the output shaft of the second drive part. The gear groove is formed on the inner side wall of the inner sleeve and meshes with the second gear for transmission.

[0019] Furthermore, each set of the ladder car connection assembly includes a pressure plate, two sets of connecting bolts, and two sets of connecting nuts. The two sets of connecting bolts corresponding to each set of the ladder car connection assembly are arranged at intervals along the width direction of the track and are threadedly connected to the corresponding fixed support rod or the second rod, so that a cavity is formed between the two sets of connecting bolts for the longitudinal rod to pass through. The pressure plate is pressed on the longitudinal rod and is threadedly connected to the corresponding two sets of connecting bolts and locked by the connecting nuts.

[0020] Furthermore, each of the fixed support rods and the second rod has a waist-shaped hole arranged along the width direction of the track in the length direction for each of the connecting bolts, so as to adjust the distance between the corresponding two sets of connecting bolts.

[0021] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an anti-tipping device for a track ladder car for overhead contact line construction. By adjusting the length of the telescopic support rod, it can adapt to ladder cars and tracks of different sizes, so that the ladder car connecting components on both sides are connected to the ladder car chassis, preventing the ladder car from derailing and overturning along the width direction of the track. The present invention has a simple structure, strong stability and adjustability, and a wide range of applications. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a structural diagram of an anti-tipping device for a track ladder vehicle used in overhead contact line construction, provided by this utility model, in its operational state.

[0024] Figure 2 This utility model provides a structural schematic diagram of an anti-tipping device for a track ladder vehicle used in overhead contact line construction.

[0025] Figure 3 for Figure 2 Enlarged structural diagram of section A.

[0026] Figure 4 for Figure 2 Enlarged structural diagram of section B.

[0027] In the diagram: 1. Horizontal bar, 2. Vertical bar, 3. Telescopic support bar, 31. Fixed support bar, 32. Sliding support bar, 321. First bar, 322. Second bar, 33. Locking screw, 34. First drive assembly, 341. First drive unit, 342. First gear, 343. Rack, 344. Slide block, 4. Anti-tilting assembly, 41. Fixed sleeve, 42. Sliding element, 421. Inner sleeve, 422. Diagonal brace, 43. Stabilizing wheel, 44. Fastening screw, 45. Second drive assembly, 451. Second drive unit, 452. Second gear, 453. Gear groove, 5. Ladder car connecting assembly, 51. Pressure plate, 52. Connecting bolt, 53. Connecting nut. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The track ladder vehicle commonly used in the construction of overhead contact lines in the prior art includes a chassis, a support frame and an operating platform connected from bottom to top, as well as track wheels installed on both sides of the chassis for moving on the track. The chassis is a frame structure formed by connecting at least two horizontal bars 1 arranged along the width of the track and two vertical bars 2 arranged along the length of the track.

[0032] Please see Figure 1This utility model discloses an anti-tipping device for a track ladder trolley used in overhead contact line construction, comprising:

[0033] Telescopic support rod 3, the telescopic direction of which is arranged along the width direction of the track;

[0034] Two sets of anti-tilt components 4, each set of anti-tilt components 4 includes a fixed sleeve 41, a sliding member 42 and a stabilizing wheel 43. The fixed sleeve 41 is fixed to the bottom of both ends of the telescopic support rod 3 by bolts or welding. One end of each of the two sliding members 42 is slidably connected to the fixed sleeve 41 along the width direction of the track. The two stabilizing wheels 43 are rotatably installed on the other end of each of the two sliding members 42, and the rolling surface of each stabilizing wheel 43 abuts against the inner side of the bottom of the corresponding track head.

[0035] Two sets of ladder truck connection components 5 are fixed to the top of both ends of the telescopic support rod 3 and connected to the longitudinal rod 2.

[0036] In some embodiments, the telescopic support rod 3 includes a fixed support rod 31, a sliding support rod 32, and a locking screw 33. A slot is provided at one end of the fixed support rod 31. The sliding support rod 32 is slidably inserted into the slot along the axial direction of the fixed support rod 31. The tail end of the locking screw 33 passes perpendicularly through the side wall of the fixed support rod 31 and is connected to the sliding support rod 32 for positioning. Two fixing sleeves 41 and two sets of ladder car connecting assemblies 5 are respectively fixed to the bottom and top of the fixed support rod 31 and the sliding support rod 32 at opposite ends. Changing the length of the sliding support rod 32 within the slot adjusts the length of the telescopic support rod 3, thereby accommodating ladder cars and tracks of different sizes.

[0037] In some embodiments, the sliding support rod 32 includes a first rod 321 and a second rod 322 with an outer diameter larger than that of the first rod 321. One end of the first rod 321 is slidably inserted into a slot, and one end of the second rod 322 is fixed to the other end of the first rod 321. The second rod 322 has the same outer diameter as the fixed support rod 31. The fixing sleeve 41 and the ladder truck connecting assembly 5 corresponding to the sliding support rod 32 are respectively fixed to the bottom and top of the other end of the second rod 322. This ensures that the ladder truck connecting assemblies 5 at both ends of the support rod are installed on the same plane, preventing the ladder truck from tilting after installation.

[0038] In some embodiments, a first driving assembly 34 for driving the sliding support rod 32 to slide is further provided. The first driving assembly 34 includes a first driving part 341, a first gear 342, and a rack 343. A slide block 344 is fixed on the body of the second rod 322, and a sliding groove is formed on the slide block 344 along the axial direction of the fixed support rod 31. The first driving part 341 is mounted on the slide block 344, and the first gear 342 is driven by the output end of the first driving part 341. One end of the rack 343 is fixed to the body of the fixed support rod 31, and the other end is slidably connected to the sliding groove and meshes with the first gear 342 for transmission. The first driving part 341 is a handwheel or a drive motor. The first driving part 341 drives the first gear 342 to rotate, thereby driving the rack 343 to move linearly, and thus driving the sliding support rod 32 to slide.

[0039] In some other embodiments, the first drive assembly 34 may also employ a lead screw drive mechanism. One end of the lead screw is rotatably mounted on the fixed support rod 31 and driven by a drive unit, which may be a handle or a motor. A transmission nut is fixed to the second rod 322, and the transmission nut is threadedly connected to the other end of the lead screw. The lead screw drive mechanism is used to adjust the length of the telescopic support rod 3.

[0040] In some embodiments, the sliding member 42 includes an inner sleeve 421 and a diagonal brace 422. One end of the inner sleeve 421 is slidably connected to the inner sidewall of the corresponding fixed sleeve 41, and one end of the diagonal brace 422 is fixed to the other end of the inner sleeve 421, while the other end is inclined downward. The axle of the stabilizing wheel 43 is coaxially arranged with the diagonal brace 422 and rotatably connected to the other end of the diagonal brace 422.

[0041] The angle of the diagonal brace 422 is adjusted according to the inclination of the inner side of the bottom of the rail head so that the rolling surface of the stabilizing wheel 43 abuts against the inner side of the bottom of the rail head. In some embodiments, the included angle between the diagonal brace 422 and the inner sleeve 421 can be 153°.

[0042] In some embodiments, the anti-tilt assembly 4 further includes a fastening screw 44 for locking the inner sleeve 421. The side wall of the fixed sleeve 41 is provided with an elongated adjustment hole 411 arranged along the width direction of the track in the length direction. The inner sleeve 421 is provided with a threaded hole. The tail end of the fastening screw 44 passes through the elongated adjustment hole 411 and the threaded hole and is threadedly connected.

[0043] In some embodiments, the anti-tilt assembly 4 further includes a second drive assembly 45 for driving the inner sleeve 421 to slide. The second drive assembly 45 includes a second drive part 451, a second gear 452, and a gear groove 453. An elongated sliding hole 4211 with its length arranged along its axial direction is provided on the side wall of the inner sleeve 421. The second drive part 451 is installed on the outer wall of the fixed sleeve 41, and its output shaft extends through the elongated sliding hole 4211 into the inner cavity of the inner sleeve. The second gear 452 is placed in the inner cavity of the inner sleeve and fixed on the output shaft of the second drive part 451. The gear groove 453 is formed on the inner side wall of the inner sleeve 421 and meshes with the second gear 452 for transmission. The second drive part 451 is a handle or a drive motor. The second drive part 451 drives the second gear 452 to rotate. The second gear 452 meshes with the gear groove 453 to drive the inner sleeve 421 to slide within the fixed sleeve 41, so as to adjust the position of the stabilizing wheel 43 so that both stabilizing wheels 43 are in rolling connection with the inner side of the bottom of the rail head.

[0044] In some embodiments, each set of ladder car connecting components 5 includes a pressure plate 52, two sets of connecting bolts 51 and two sets of connecting nuts 53. The two sets of connecting bolts 51 corresponding to each set of ladder car connecting components 5 are arranged at intervals along the width direction of the track and are threadedly connected to the corresponding fixed support rod 31 or the second rod 322, so that a cavity for the longitudinal rod 2 to pass through is formed between the two sets of connecting bolts 51. The pressure plate 52 is pressed on the longitudinal rod 2 and threadedly connected to the corresponding two sets of connecting bolts 51 and locked by the connecting nuts 53 to realize the connection with the longitudinal rod 2 on the ladder car chassis.

[0045] In some embodiments, the fixed support rod 31 and the second rod 322 are provided with waist-shaped holes arranged along the width direction of the track in the length direction for each connecting bolt, so as to adjust the spacing between the two sets of connecting bolts 51 and thus adapt to longitudinal rods of different diameters.

[0046] The anti-tipping device of this utility model can adapt to rails of different widths and ladder cars of different sizes. It has stronger adaptability and a more stable connection with the ladder car, which can effectively prevent the ladder car from tipping over.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A track ladder truck anti-overturning device for catenary construction, the ladder truck comprising a chassis, a support frame and an operating platform connected in sequence from bottom to top, and track wheels installed on both sides of the chassis for walking on the track, the chassis being a frame structure formed by connecting at least two cross bars (1) arranged in the width direction of the track and two longitudinal bars (2) arranged in the length direction of the track, characterized in that, The utility model relates to a telescopic support rod (3) is arranged along the width direction of the track in the telescopic direction, two groups of anti -tilt components (4) are arranged on both ends of the telescopic support rod (3), two groups of ladder car connecting components (5) are arranged on the top of both ends of the telescopic support rod (3) and are connected with the longitudinal rod (2). The telescopic support rod (3) comprises a fixed support rod (31), a sliding support rod (32) and a locking screw (33), the end of the fixed support rod (31) is provided with a slot, the sliding support rod (32) is slidably inserted into the slot along the axial direction of the fixed support rod (31), the tail end of the locking screw (33) is vertically inserted into the fixed support rod (31) and is limitedly connected with the sliding support rod (32), and the two fixed sleeves (41) and the two groups of ladder car connecting components (5) are respectively arranged at the bottom and the top of the mutually far ends of the fixed support rod (31) and the sliding support rod (32). The sliding support rod (32) comprises a first rod (321) and a second rod (322) with an outer diameter larger than that of the first rod (321), one end of the first rod (321) is slidably inserted into the slot, one end of the second rod (322) is fixed to the other end of the first rod (321), and the second rod (322) has the same outer diameter as the fixed support rod (31), and the corresponding fixed sleeve (41) and the ladder car connecting component (5) are respectively arranged at the bottom and the top of the other end of the second rod (322). A first driving assembly (34) is arranged to drive the sliding of the sliding support rod (32), the first driving assembly (34) comprises a first driving part (341), a first gear (342) and a rack (343), a sliding seat (344) is fixed to the second rod (322), a sliding groove is arranged on the sliding seat (344) along the axial direction of the fixed support rod (31), the first driving part (341) is arranged on the sliding seat (344), the output end of the first driving part (341) is drivingly connected with the first gear (342), one end of the rack (343) is fixed to the fixed support rod (31), the other end is slidably connected with the sliding groove and is drivingly connected with the first gear (342).

2. The track ladder anti-overturning device for overhead line construction according to claim 1, characterized in that, ​ 3. The track ladder anti-overturning device for overhead line construction according to claim 2, characterized in that, ​ 4. The track ladder anti-overturning device for overhead line construction according to claim 3, characterized in that, ​ 5. The track ladder anti-overturning device for overhead line construction according to claim 4, characterized in that, The sliding member (42) comprises an inner sleeve (421) and a diagonal brace (422), one end of the inner sleeve (421) is slidingly connected to the inner side wall of the corresponding fixed sleeve (41), one end of the diagonal brace (422) is fixed to the other end of the inner sleeve (421), and the other end is inclined downward; the wheel shaft of the stabilizing wheel (43) is coaxially arranged with the diagonal brace (422) and is rotationally connected to the other end of the diagonal brace (422).

6. The anti-overturning device for track ladder car for overhead line construction according to claim 5, characterized in that, The included angle between the diagonal brace (422) and the inner sleeve (421) is 153°.

7. The track ladder anti-overturning device for overhead line construction according to claim 5, characterized in that, The anti-tilting assembly (4) further comprises a fastening screw (44) for locking the inner sleeve (421), a long strip-shaped adjusting hole (411) is formed in the side wall of the fixed sleeve (41) and is arranged in the width direction of the track, a threaded hole is formed in the inner sleeve (421), and the tail end of the fastening screw (44) is threadedly connected through the long strip-shaped adjusting hole (411) and the threaded hole.

8. The track ladder anti-overturning device for overhead line construction according to claim 5, characterized in that, The anti-tilting assembly (4) further comprises a second driving assembly (45) for driving the sliding of the inner sleeve (421), the second driving assembly (45) comprises a second driving part (451), a second gear (452) and a gear groove (453), a long strip-shaped sliding hole (4211) is formed in the side wall of the inner sleeve (421) and is arranged in the axial direction thereof, the second driving part (451) is installed on the outer side wall of the fixed sleeve (41) and the output shaft thereof extends into the inner cavity of the inner sleeve (421) through the long strip-shaped sliding hole (4211), the second gear (452) is arranged in the inner cavity of the inner sleeve (421) and is fixed on the output shaft of the second driving part (451); and the gear groove (453) is formed in the inner side wall of the inner sleeve (421) and is in meshing transmission with the second gear (452).

9. The track ladder anti-overturning device for overhead line construction according to claim 5, characterized in that, Each set of the ladder car connecting assembly (5) comprises a pressing plate (52), two sets of connecting bolts (51) and two sets of connecting nuts (53), the two sets of connecting bolts (51) of each set of the ladder car connecting assembly (5) are arranged in the width direction of the track and are threadedly connected to the corresponding fixed support rod (31) or second rod (322), so that a cavity is formed between the two sets of connecting bolts (51) for the longitudinal rod (2) to pass through; the pressing plate (52) is arranged above the longitudinal rod (2) and is threadedly connected with the two sets of connecting bolts (51) and is locked by the connecting nuts (53).

10. The anti-overturning device for track ladder car for overhead line construction according to claim 9, characterized in that, The fixed support rod (31) and the second rod (322) are provided with a waist-shaped hole corresponding to each connecting bolt (51) and arranged in the width direction of the track, so as to adjust the distance between the two sets of connecting bolts (51).

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