Retractable beam anchor-free track type walking cantilever bridge builder

Abstract

The utility model belongs to bridge -building machine technical field, concretely relates to a telescopic beam anchorless track type walking cantilever bridge -building machine, and the track of the existing bridge -building machine walking system needs to be implemented track migration and main body propulsion in stages, and the track inversion process needs to be configured 6-8 professional operators to complete in cooperation, and the track migration needs to reserve at least 3 times bridge deck width's operation space problem, the present scheme is proposed, including the bottom formwork, two outer forms, symmetrically set up in the top of bottom formwork and are fixedly connected through same outer mould C type inverted frame, the outer mould C type inverted frame includes former C type crossbeam and rear C type crossbeam, in the utility model, bridge -building machine adopts anchorless track type walking, when the bridge -building machine walks, only need to anchor the rear end of inner guide beam, can walk 3~4m section length once, and the bridge -building machine adopts hydraulic cylinder and pushes the card and walks the mode, simple structure, safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of bridge building machine technology, specifically relating to a telescopic beam non-anchored track-type traveling cantilever bridge building machine. Background Technology

[0002] In the field of bridge construction, bridge-building machines are the core equipment for the rapid erection of bridge segments, and their operational efficiency and safety directly affect the project cycle and cost. Traditional bridge-building machines typically employ a "track-first forward movement - anchoring and fixing - overall forward movement of the main structure" operation mode during construction. While this technical solution meets basic construction requirements, it has the following technical shortcomings in practical applications:

[0003] The existing bridge-building machine's walking system requires phased implementation of track relocation and main structure advancement: first, the track must be moved forward individually to the predetermined position, followed by anchoring operations, and only after the track is completely fixed can the overall forward movement of the bridge-building machine's main structure be initiated. This sequential operation mode results in the equipment's effective operating time accounting for less than 40%, significantly reducing construction continuity.

[0004] The track replacement process requires 6-8 professional operators to work together, including track unlocking, lateral movement, longitudinal docking, and anchor bolt tightening. Statistics show that manual operation accounts for 75% of the time in a single track relocation operation, and there are risks of human error such as insufficient bolt torque and track docking deviations.

[0005] During the anchoring phase, traditional methods use chemical anchors or expansion bolts to fix the track, which takes 2-4 hours to cure. During this period, the bridge-building machine is in a cantilevered state, and is prone to structural swaying when encountering sudden gusts of wind (wind speed > level 6). Finite element analysis shows that the displacement at the cantilever end can reach 120-180mm, posing a risk of overturning.

[0006] Track relocation requires reserving working space at least three times the width of the bridge deck. In restricted scenarios such as mountainous canyons or existing line renovation, traditional processes reduce equipment applicability due to insufficient working radius, indirectly increasing the cost of building the construction platform. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a telescopic beam non-anchored track-type cantilever bridge building machine. By adopting a short track + steel wheel box walking mechanism, compared with ordinary bridge building machines, this lightweight short track does not require anchoring and can be easily pulled and replaced manually, thus improving construction efficiency.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A telescopic beam non-anchored track-type traveling cantilever bridge building machine, including a bottom formwork;

[0010] Two outer templates are symmetrically arranged on the top of the bottom template and are fixedly connected by the same C-shaped inverted frame. The C-shaped inverted frame includes a front C-shaped crossbeam and a rear C-shaped crossbeam.

[0011] Internal mold system;

[0012] Two translation base assemblies, each of which has a telescopic pin beam assembly fixedly mounted on its top;

[0013] The main longitudinal beam horizontal connecting frame is fixedly connected between the two telescopic needle beam assemblies;

[0014] The telescopic needle beam assembly includes an outer slide beam and an inner guide slide beam body, wherein the inner guide slide beam body is slidably disposed inside the outer slide beam;

[0015] The telescopic needle beam assembly is equipped with an anchorless track-type traveling wheel mechanism at its bottom. The anchorless track-type traveling wheel mechanism includes a traveling wheel cylinder, which is fixedly installed at the bottom of the telescopic needle beam assembly; a traveling wheel, which is fixedly installed on the piston rod of the traveling wheel cylinder; and a traveling track, which is laid on the traveling surface and cooperates with the traveling wheel to travel.

[0016] Furthermore, it also includes:

[0017] A side guide wheel mechanism is fixedly installed at one end of the rear C-shaped crossbeam and the front C-shaped crossbeam;

[0018] Multiple bottom formwork anchors are used to anchor the bottom formwork to the bridge deck;

[0019] Multiple outer mold rear anchors and inner mold rear anchors are used to anchor the inner mold system to the bridge deck;

[0020] The outer formwork is fixedly connected to the front C-shaped crossbeam via the outer formwork front hanger; the front C-shaped crossbeam is fixedly installed to the bottom formwork via multiple bottom formwork outer hangers; and the inner formwork system is fixedly installed to the front C-shaped crossbeam via multiple front lower crossbeam middle hangers and inner formwork front hangers.

[0021] Furthermore, the two ends of the main longitudinal beam horizontal connecting frame are fixedly connected with bottom formwork rear anchors;

[0022] It also includes the rear anchor distribution beam of the main longitudinal beam, which is fixedly installed on the bridge deck by the rear anchor tie rod and the rear anchor inclined pad.

[0023] Furthermore, the telescopic needle beam assembly also includes: a support frame grounding cylinder, which is fixedly installed at the bottom of the inner guide beam body;

[0024] The inner guide beam is anchored at one end of the two inner guide beam bodies;

[0025] The rear anchor beam is fixedly installed at one end of the outer sliding beam;

[0026] The push cylinder has its cylinder body connected to the bottom of one end of the outer slide beam, and its piston rod is connected to the bottom of the inner guide slide beam.

[0027] Furthermore, the telescopic needle beam assembly also includes:

[0028] Multiple upper and lower support nylon sliders and upper and lower support wheels are fixedly installed on the inner wall of the outer slide beam and slide in contact with the outer surface of the inner guide slide beam body;

[0029] The side guide wheel is fixedly installed on the side wall of the outer slide beam and cooperates with the main body of the inner guide slide beam to ensure accurate sliding direction.

[0030] Furthermore, it also includes:

[0031] The traveling push bracket is fixedly installed at the bottom of the inner guide beam body;

[0032] The inner guide beam rear anchor support is fixedly installed at one end of the inner guide slide beam body;

[0033] The inner guide beam rear anchor suspension platform is fixedly installed at both ends of the inner guide beam rear anchor crossbeam.

[0034] Furthermore, the translational base assembly is a welded rigid body. During concrete pouring, it descends via the hydraulic cylinders of the traveling wheels to contact the road surface and bear the load; during travel, it rises via the hydraulic cylinders of the traveling wheels to contact the road surface with the rubber-coated steel traveling wheels, thereby achieving left and right translational alignment and ensuring that the centerline of the bridge-building machine matches the centerline of the beam.

[0035] The bridge-building machine with unanchored track in this application has telescopic needle beam structures on both sides of the main longitudinal beams.

[0036] The telescopic needle beam structure consists of an outer sliding beam and an inner guide beam. The inner guide beam can telescopically move within the outer sliding beam. Support rollers and nylon sliders are used around the inner and outer sliding beams to ensure smooth sliding of the inner and outer beams and to allow the inner and outer box beams to bear the load together as a whole.

[0037] When the bridge-building machine travels: The rear end of the inner guide beam is anchored, and a hydraulic cylinder-driven plate jacking mechanism pushes the outer sliding beam outward, thus enabling the bridge-building machine to travel. The hydraulic cylinder-driven plate can be reversed, thereby enabling the bridge-building machine to travel in the same direction.

[0038] The bridge-building machine uses a lightweight short track + steel wheel box traveling mechanism, and the track does not need to be anchored when the bridge-building machine is moving.

[0039] The bottom of the main longitudinal beam of the bridge-building machine is designed with a translation base system. This system allows the bridge-building machine to maintain its centerline aligned with the centerline of the beam section whenever it deviates during travel, ensuring accurate dimensions for the poured concrete.

[0040] The translation base is a welded rigid body, which serves as the main load-bearing component during concrete pouring: the track of the traveling wheels is raised off the road surface, and the base contacts the road surface to bear the huge load during concrete pouring.

[0041] Compared with the prior art, the present invention has the following beneficial effects through the above technical solution:

[0042] 1. The bridge-building machine adopts a short track + steel wheel box walking mechanism. Compared with ordinary bridge-building machines, this lightweight short track does not require anchoring and can be easily pulled and replaced manually, improving construction efficiency.

[0043] 2. The bridge-building machine adopts a telescopic needle beam structure. When the bridge-building machine is traveling, it only needs to anchor the rear end of the inner guide beam to travel a segment length of 3 to 4 meters at a time.

[0044] 3. The bridge-building machine adopts a hydraulic cylinder pushing and clamping method for travel, which is simple in structure and safe and reliable.

[0045] 4. The main beam of the bridge-building machine is designed with a translation base system, which can translate the entire bridge-building machine left and right to center it, so that the centerline of the bridge-building machine always matches the centerline of the beam.

[0046] 5. By adjusting the bridge-building machine's base horizontally, the bridge-building machine can perform lining construction on curved continuous beams. Attached Figure Description

[0047] Figure 1 This is a side view of the telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0048] Figure 2 This is a cross-sectional structural diagram of AA in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0049] Figure 3 This is a cross-sectional structural diagram of BB in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0050] Figure 4 This is a cross-sectional structural diagram of CC in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0051] Figure 5 This is a cross-sectional structural diagram of DD in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0052] Figure 6 This is a cross-sectional structural diagram of EE in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0053] Figure 7 This is a frame structure diagram of a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model;

[0054] Figure 8 This utility model provides a structural diagram of a telescopic needle beam assembly for a non-anchored track-type cantilever bridge-building machine.

[0055] Figure 9 This is a schematic diagram of the upper and lower support nylon sliders in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model;

[0056] Figure 10 This is a schematic diagram of the upper and lower support nylon sliders and upper and lower support wheels in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model.

[0057] Figure 11 This is a schematic diagram of the upper and lower support wheels and side guide wheels in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model;

[0058] Figure 12 This is a schematic diagram of the overall structure of a telescopic beam non-anchored track-type cantilever bridge building machine before it moves, as proposed in this utility model.

[0059] Figure 13 This is a schematic diagram of the structure of a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model when the bridge building machine is moving forward;

[0060] Figure 14 This is a schematic diagram of the formwork system of a telescopic beam non-anchored track-type traveling cantilever bridge construction machine proposed in this utility model after it moves to the next lining segment position;

[0061] Figure 15 This is a schematic diagram of the structure of the inner guide beam when it is retracted into place in a telescopic beam non-anchored track-type traveling cantilever bridge building machine proposed in this utility model;

[0062] Figure 16 This is a schematic diagram illustrating the secure installation of the rear anchor bolt of the inner guide beam in a telescopic beam-type track-based cantilever bridge-building machine with an anchorless track, as proposed in this utility model.

[0063] In the diagram: 1. Outer formwork; 2. Outer formwork C-shaped inverted frame; 3. Telescopic needle beam assembly; 4. Inner guide beam main body; 5. Traveling wheel cylinder; 6. Translation base assembly; 7. Traveling wheel brake shoe; 8. Rubber-coated steel wheels; 9. Pushing cylinder; 10. Outer formwork front hanger; 11. Inner formwork system; 12. Front lower crossbeam middle hanger; 13. Inner formwork front hanger; 14. Front C-shaped crossbeam; 15. Bottom formwork outer hanger; 16. Bottom formwork; 17. Rear C-shaped crossbeam; 18. Main longitudinal beam horizontal connecting frame; 19. Inner mold rear anchor; 20. Outer mold rear anchor; 21. Bottom mold rear anchor; 22. Side guide wheel mechanism; 23. Main longitudinal beam rear anchor distribution beam; 24. Rear anchor tie rod; 25. Rear anchor inclined pad; 26. Traveling jacking seat; 27. Inner guide beam rear anchor crossbeam; 28. Inner guide beam rear anchor support frame; 29. ​​Support frame ground-supporting cylinder; 30. Inner guide beam rear anchor hanging platform; 31. Outer sliding beam; 32. Rear anchor spreader beam; 33. Upper and lower support nylon sliders; 34. Upper and lower support wheels; 35. Side guide wheel. Detailed Implementation

[0064] The present invention will now be described in detail with reference to the accompanying drawings.

[0065] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0066] The preferred embodiments of this utility model will now be described with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0067] In this document, ordinal numbers such as “first” and “second” used in this application are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component”, and the term “second component” does not imply the existence of a “first component”.

[0068] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0069] As shown in the figure, this embodiment provides a telescopic beam non-anchored track-type traveling cantilever bridge building machine, which is used in the field of bridge building machines. The main structure of the bridge building machine includes a bottom template 16 and two symmetrically arranged outer templates 1. The outer templates 1 are rigidly connected to the front C-shaped crossbeam 14 and the rear C-shaped crossbeam 17 through the outer template C-shaped inverted frame 2. The front C-shaped crossbeam 14 and the bottom template 16 are vertically fixed by the bottom template outer hanger 15. The inner template system 11 is suspended below the front C-shaped crossbeam 14 through the middle hanger 12 of the front lower crossbeam and the inner template front hanger 13. The top of the outer template 1 is connected to the front C-shaped crossbeam 14 through the outer template front hanger 10 to form a three-point suspension system. The main longitudinal beam horizontal connecting frame 18 spans between the two telescopic needle beam assemblies 3. Its end is fixed to the bridge deck through the bottom template rear anchor 21. The rear anchor tie rod 24 passes through the main longitudinal beam rear anchor distribution beam 23 and the rear anchor inclined pad 25 to form a multiple anchoring structure.

[0070] The telescopic needle beam assembly 3 consists of an outer sliding beam 31 and an inner guide sliding beam body 4 forming a nested telescopic structure. The outer wall of the inner guide sliding beam body 4 is equipped with upper and lower supporting nylon sliders 33 and upper and lower supporting wheels 34, forming a four-way sliding support with the inner wall of the outer sliding beam 31. Side guide wheels 35 ensure precise alignment in the telescopic direction. A push cylinder 9 has its cylinder body connected to the bottom of one end of the outer sliding beam 31, and its piston rod is connected to the push-off seat at the bottom of the inner guide sliding beam.

[0071] The top of the translation base assembly 6 is welded to the bottom of the outer sliding beam 31. The hydraulic cylinder 5 at its bottom drives the wheels to rise and fall, working in conjunction with the travel track laid on the road surface for movement. A short track + steel wheel box travel mechanism is used. Compared to ordinary bridge-building machines, this lightweight short track requires no anchoring and can be easily pulled and replaced manually, improving construction efficiency.

[0072] During construction, the first step is to prepare for movement: release the anchor bolts of the main longitudinal beam, loosen the rear anchor of the inner guide beam body 4 by 50mm, and lift the travel wheel cylinder 5 by 100mm so that the translation base assembly 6 is 50mm off the ground. Then, activate the jacking cylinder 9 to push the outer slide beam 31 outwards along the inner guide beam body 4 by 3 to 4 meters. During this process, the rear end of the inner guide beam body 4 is kept anchored by the inner guide beam rear anchor support frame 28. When the outer slide beam 31 reaches its limit position, operate the travel cylinder to retract it so that the translation base assembly 6 returns to the ground, install the main longitudinal beam rear anchor bolts, and release the rear anchor of the inner guide beam body 4. Then, reverse the jacking cylinder 9 to retract the inner guide beam body 4 to its initial position and re-establish the rear anchor connection.

[0073] The translational correction system contacts the bridge deck guardrail via the lateral guide wheel mechanism 22. When the bridge-building machine's axis deviates, the rigid welded structure of the translational base assembly 6 can withstand the lateral adjustment torque. Combined with the fine-tuning function of the support frame's ground-supporting cylinder 29, it ensures that the deviation between the centerline of the bottom formwork 16 and the bridge axis is controlled within ±10mm. The inner formwork system 11 forms a spatial positioning constraint through the outer formwork rear anchor 20 and the inner formwork rear anchor 19. The bottom formwork rear anchor 21 adopts a double-nut anti-loosening structure. During concrete pouring, the load is transferred to the bridge deck foundation through the main longitudinal beam rear anchor distribution beam 23.

[0074] Step 1: The following tasks should be completed before the bridge-building machine moves as a whole:

[0075] 1. After demolding the outer mold, bottom mold, and inner mold, hang the bottom mold at the rear lifting point and use a hand chain hoist to hang it on the C-shaped hanging leg.

[0076] 2. Remove the rear anchor bolts of the main longitudinal beam and loosen the rear anchor of the inner guide beam by 50mm to facilitate the upward lifting of the travel cylinder.

[0077] 3. The hydraulic cylinder 5 of the traveling wheel is lifted upward by 100mm, the traveling wheel track contacts the ground, and the base is moved 50mm away from the road surface.

[0078] 4. Clear away the debris piled up on the road and make way for the bridge-building machine to travel.

[0079] Step 2: Start the jacking cylinder 9 mechanism of the bridge building machine. The bridge building machine will move forward in one segment with a length of 3 to 4 meters.

[0080] The inner guide beam slides relative to the cantilever beam, and the rear end of the inner guide beam is always anchored to the beam to maintain the balance of the bridge-building machine and prevent it from overturning during travel.

[0081] Step 3: After the formwork system moves to the next lining segment, the following work needs to be done:

[0082] 1. Operate the travel cylinder to retract, lower the translation base until it contacts the road surface, and at the same time, the travel wheels leave the road surface by 50mm.

[0083] 2. First, install and securely anchor the rear anchor bolts of the main longitudinal beam.

[0084] 3. Remove the anchor bars of the inner guide beam.

[0085] 4. Loosen the anchor bolts in the foundation and remove them from the ground.

[0086] Step Four:

[0087] The bridge-building machine's top-pushing hydraulic cylinder 9 mechanism is activated to retract the inner guide beam into place in one go.

[0088] Step 5:

[0089] 1. Install the rear anchor bolts of the inner guide beam securely according to the lining condition.

[0090] 2. Extend the ground support weight to tighten the road surface.

[0091] Step Six:

[0092] 1. And so on, repeating the operation.

[0093] This implementation method achieves the bridge-building machine's step-like movement through the alternating telescopic movement of the inner guide beam body 4 and the outer guide beam 31. A single jacking stroke covers the workload of three track relocations in traditional processes. A lightweight short track + steel wheel box walking mechanism is used, eliminating the need for track anchoring during the bridge-building machine's movement. The hydraulic jacking system provides 500-ton thrust, and in conjunction with the distributed anchoring points of the inner guide beam's rear anchor beam 27, effectively suppresses structural deformation under cantilever conditions. Actual measurements show that under an 8-level wind load, the displacement at the cantilever end is controlled within 30mm. The lateral adjustment function of the translation base assembly 6 allows the equipment to adapt to curve radii of R=800 meters, enabling turning operations in canyon environments with bridge deck widths of only 12 meters.

[0094] However, as is well known to those skilled in the art, the jacking cylinder 9 is a heavy-duty hydraulic cylinder for metallurgical equipment, model HSG-250 / 180-5050 with a cylinder diameter of 250mm, a rod diameter of 180mm, a stroke of 5050mm, and a rated thrust of 500 tons; the traveling wheel cylinder 5 is a double-acting hydraulic cylinder for engineering machinery, model HOB 100x70-300 with a cylinder diameter of 100mm, a rod diameter of 70mm, and a stroke of 300mm; the support frame ground cylinder 2929 is a compact self-locking hydraulic cylinder, model Y-HG1-C80 / 56-200 with a cylinder diameter of 80mm, a rod diameter of 56mm, and a stroke of 200mm. The aforementioned electrical components are all commercially available standard parts in the field of engineering machinery. Their installation interfaces and performance parameters conform to the GB / T 15622 national standard for hydraulic cylinders. Their working principles and wiring methods are commonplace and belong to conventional methods or common knowledge. Therefore, they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0095] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention.

[0096] Terms such as “component” as used herein may refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” as used herein may refer to a component being directly attached to another component or a component being attached to another component via an intermediary. Features described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or otherwise stated.

[0097] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A telescopic beam non-anchored track-type traveling cantilever bridge building machine, characterized in that, include: Base template (16); Two outer templates (1) are symmetrically arranged on the top of the bottom template (16) and are fixedly connected by the same outer template C-shaped inverted frame (2). The outer template C-shaped inverted frame (2) includes a front C-shaped crossbeam (14) and a rear C-shaped crossbeam (17). Internal mold system (11); Two translation base assemblies (6), each of which is fixedly mounted on top of a telescopic pin beam assembly (3); The main longitudinal beam horizontal connecting frame (18) is fixedly connected between the two telescopic needle beam assemblies (3); The telescopic needle beam assembly (3) includes an outer slide beam (31) and an inner guide slide beam body (4), wherein the inner guide slide beam body (4) is slidably disposed inside the outer slide beam (31); The telescopic needle beam assembly (3) is provided with an anchorless track-type walking wheel mechanism at its bottom. The anchorless track-type walking wheel mechanism includes a walking wheel cylinder (5), which is fixedly installed at the bottom of the telescopic needle beam assembly (3); a walking wheel, which is fixedly installed on the piston rod of the walking wheel cylinder (5); and a walking track, which is laid on the walking road surface and moves in conjunction with the walking wheel.

2. The telescopic beam non-anchored track-type traveling cantilever bridge building machine according to claim 1, characterized in that, Also includes: A side guide wheel mechanism (22) is fixedly installed at one end of the rear C-shaped crossbeam (17) and the front C-shaped crossbeam (14); Multiple bottom formwork anchors (21) are used to anchor the bottom formwork (16) to the bridge deck; Multiple outer mold rear anchors (20) and inner mold rear anchors (19) are used to anchor the inner mold system (11) to the bridge deck; The outer template (1) is fixedly connected to the front C-shaped crossbeam (14) via the outer template front hanger (10); the front C-shaped crossbeam (14) is fixedly installed to the bottom template (16) via multiple bottom template outer hangers (15); the inner template system (11) is fixedly installed to the front C-shaped crossbeam (14) via multiple front lower crossbeam middle hangers (12) and inner template front hangers (13).

3. The telescopic beam non-anchored track-type traveling cantilever bridge building machine according to claim 1, characterized in that, The two ends of the main longitudinal beam horizontal connecting frame (18) are fixedly connected to the bottom formwork rear anchor (21); It also includes the rear anchor distribution beam (23) of the main longitudinal beam, which is fixedly installed on the bridge deck by the rear anchor tie rod (24) and the rear anchor inclined pad (25).

4. The telescopic beam non-anchored track-type traveling cantilever bridge building machine according to claim 1, characterized in that, The telescopic needle beam assembly (3) also includes: a support frame ground-supporting cylinder (29), which is fixedly installed at the bottom of the inner guide beam body (4); The inner guide beam rear anchor crossbeam (27) is fixedly connected to one end of the two inner guide slide beam bodies (4); The rear anchor beam (32) is fixedly installed at one end of the outer sliding beam (31); The push cylinder (9) has its cylinder body connected to the bottom of one end of the outer slide beam (31), and its piston rod is connected to the bottom of the inner guide slide beam.

5. The telescopic beam non-anchored track-type traveling cantilever bridge building machine according to claim 4, characterized in that, Also includes: Multiple upper and lower support nylon sliders (33) and upper and lower support wheels (34) are fixedly installed on the inner wall of the outer slide beam (31) and slide in contact with the outer surface of the inner guide slide beam body (4); The side guide wheel (35) is fixedly installed on the side wall of the outer slide beam (31) and cooperates with the inner guide slide beam body (4) to ensure accurate sliding direction.

6. The telescopic beam non-anchored track-type traveling cantilever bridge building machine according to claim 4, characterized in that, Also includes: The traveling pusher seat (26) is fixedly installed at the bottom of the inner guide beam body (4); The inner guide beam rear anchor support frame (28) is fixedly installed at one end of the inner guide slide beam body (4); The inner guide beam rear anchor suspension platform (30) is fixedly installed at both ends of the inner guide beam rear anchor crossbeam (27).

7. The telescopic beam non-anchored track-type cantilever bridge building machine according to any one of claims 1 to 6, characterized in that, The translation base assembly (6) is a welded rigid body.

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