Telescopic beam anchoring-free track type walking cantilever bridge fabrication machine and construction method thereof

Abstract

The invention belongs to the technical field of bridge fabrication machines, particularly relates to a telescopic beam anchoring-free rail type walking cantilever bridge fabrication machine, and aims to solve the problems that an existing bridge fabrication machine walking system needs to implement rail migration and main body propelling in stages, and the rail switching process needs to be completed by 6-8 professional operators in a cooperative mode. In order to solve the problem that an operation space at least three times of the width of a bridge deck needs to be reserved during track migration, the following scheme is provided: a bottom template is included; the two outer formworks are symmetrically arranged at the top of the bottom formwork and fixedly connected through the same outer formwork C-shaped inverted frame, and the outer formwork C-shaped inverted frame comprises a front C-shaped cross beam and a rear C-shaped cross beam. And the bridge fabrication machine adopts a hydraulic oil cylinder to push the clamping seat to walk, so that the bridge fabrication machine is simple in structure, safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge-building machines, and in particular relates to a telescopic beam anchorless track-type walking cantilever bridge-building machine and a construction method thereof. Background Art

[0002] In the field of bridge construction, bridge-building machines are core equipment for the rapid erection of bridge segments. Their operating efficiency and safety directly impact the project cycle and cost. Traditional bridge-building machines typically employ a "track advance first, anchor fixation, and then overall advance of the main structure" operation mode during construction. While this technical solution can meet basic construction requirements, it suffers from the following technical drawbacks in actual application:

[0003] The existing bridge crane travel system requires a phased approach for track relocation and mainframe advancement: first, the track must be individually moved forward to the desired location, then anchored. Only after the track is fully secured can the entire crane structure be moved forward. This serial operation mode results in the equipment's effective operating time accounting for less than 40%, significantly reducing construction continuity.

[0004] The track switching process requires the collaborative efforts of 6-8 professional operators, including track unlocking, lateral translation, longitudinal docking, and anchor bolt tightening. Statistics show that manual labor accounts for 75% of the time spent on a single track relocation operation, and there are risks of human error, such as substandard bolt torque and track docking misalignment.

[0005] During the anchoring phase, traditional methods use chemical anchors or expansion bolts to secure the rails, which takes 2-4 hours to cure. During this period, the main structure of the bridge crane is in a cantilevered state, which can easily cause structural sway in sudden gusts of wind (wind speed > level 6). Finite element analysis shows that the cantilever end can move up to 120-180mm, posing a potential overturning safety hazard.

[0006] Track relocation requires a working space of at least three times the width of the bridge deck. In restricted scenarios such as mountainous canyons or reconstruction of existing lines, traditional technologies have reduced equipment applicability due to insufficient operating radius, indirectly increasing the cost of setting up the construction platform. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a telescopic beam anchorless track type walking cantilever bridge-building machine.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A construction method of a telescopic beam anchorless track-type walking cantilever bridge-building machine comprises the following steps:

[0010] Step 1:

[0011] (1) The outer mold, bottom mold and inner mold are demoulded, and the rear hanging point of the bottom mold is hung on the C-shaped hanging leg with a hand hoist;

[0012] (2) Remove the rear anchor screw of the main longitudinal beam and loosen the rear anchor of the inner guide beam by 50 mm to facilitate the upward lifting of the travel cylinder;

[0013] (3) The travel wheel cylinder is lifted upward by 100 mm, the travel wheel track contacts the ground, and the translation base is 50 mm away from the road surface;

[0014] (4) Clear away the debris on the road and reserve a passage for the bridge-building machine;

[0015] Step 2:

[0016] (1) Start the bridge-building machine's push cylinder mechanism, and the bridge-building machine moves forward in one section for a length of 3 to 4 meters. The inner guide beam slides relatively within the cantilever beam, and the rear end of the inner guide beam is always anchored on the beam to maintain the front and rear balance of the bridge-building machine and prevent it from overturning during travel;

[0017] Step 3:

[0018] (1) Operate the travel cylinder to retract, lower the translation base and make contact with the road surface. At the same time, the travel wheels leave the road surface by 50 mm;

[0019] (2) First install and anchor the anchor screws behind the main longitudinal beam securely;

[0020] (3) Remove the anchor reinforcement after the inner guide beam;

[0021] (4) Loosen the rear anchor foundation screw and leave the ground;

[0022] Step 4:

[0023] Start the bridge-building machine's push cylinder mechanism to retract the inner guide beam into place at one time;

[0024] Step 5:

[0025] (1) Install the rear anchor screws of the inner guide beam securely according to the lining status;

[0026] (2) Extend the ground jack to hold the road surface tight;

[0027] Step 6:

[0028] And so on, the cycle repeats until the construction is completed.

[0029] A telescopic beam anchorless track-type walking cantilever bridge-building machine, comprising a bottom template;

[0030] Two outer formworks are symmetrically arranged on top of the bottom formwork and fixedly connected by the same outer formwork C-shaped inverted hanging frame, wherein the outer formwork C-shaped inverted hanging frame includes a front C-shaped crossbeam and a rear C-shaped crossbeam;

[0031] Internal mold system;

[0032] Two translation base assemblies, each of which has a telescopic needle beam assembly fixedly mounted on its top;

[0033] A main longitudinal beam flat connecting frame is fixedly connected between the two telescopic needle beam assemblies;

[0034] Wherein, the telescopic needle beam assembly comprises an outer sliding beam and an inner guide sliding beam body, and the inner guide sliding beam body is slidably arranged inside the outer sliding beam;

[0035] An anchorless track-type walking wheel mechanism is provided at the bottom of the telescopic needle beam assembly. The anchorless track-type walking wheel mechanism includes a walking wheel cylinder, which is fixedly installed at the bottom of the telescopic needle beam assembly; a walking wheel, which is fixedly installed on the piston rod of the walking wheel cylinder; and a walking track, which is laid on the walking surface and cooperates with the walking wheel for walking.

[0036] Furthermore, it also includes:

[0037] A lateral guide wheel mechanism is fixedly mounted on one end of the rear C-shaped crossbeam and the front C-shaped crossbeam;

[0038] a plurality of bottom formwork rear anchors for anchoring the bottom formwork to the bridge deck;

[0039] a plurality of outer formwork rear anchors and inner formwork rear anchors for anchoring the inner formwork system to the bridge deck;

[0040] The outer formwork is fixedly connected to the front C-shaped crossbeam through the outer formwork front hanger; the front C-shaped crossbeam is fixedly installed to the bottom formwork through multiple bottom formwork outer hangers, and the inner formwork system is fixedly installed to the front C-shaped crossbeam through multiple front lower crossbeam middle hangers and inner formwork front hangers.

[0041] Furthermore, both ends of the main longitudinal beam flat connecting frame are fixedly connected with bottom formwork rear anchors;

[0042] It also includes a main longitudinal beam rear anchor distribution beam, which is fixedly installed on the bridge deck through a rear anchor pull rod and a rear anchor inclined pad.

[0043] Furthermore, the telescopic needle beam assembly further comprises: a support frame supporting an oil cylinder fixedly mounted on the bottom of the inner guide beam body;

[0044] An inner guide beam rear anchor beam fixedly connected to one end of the two inner guide beam bodies;

[0045] A rear anchor shoulder beam is fixedly mounted on one end of the outer sliding beam;

[0046] A push oil cylinder, the cylinder body of which is connected to the bottom of one end of the outer sliding beam, and the piston rod of which is connected to the bottom of the inner guide sliding beam.

[0047] Furthermore, the telescopic needle beam assembly further comprises:

[0048] A plurality of upper and lower supporting nylon sliders and upper and lower supporting wheels are fixedly mounted on the inner wall of the outer guide beam and are in sliding contact with the outer surface of the inner guide beam body;

[0049] The side guide wheels are fixedly mounted on the side walls of the outer sliding beam and cooperate with the inner guide sliding beam body to ensure accurate sliding direction.

[0050] Furthermore, it also includes:

[0051] A walking and pushing card seat is fixedly installed at the bottom of the inner guide slide beam body;

[0052] An inner guide beam rear anchor support frame, fixedly mounted on one end of the inner guide beam body;

[0053] The inner guide beam rear anchor hanging platform is fixedly installed on both ends of the inner guide beam rear anchor crossbeam.

[0054] Furthermore, the translation base assembly is a welded rigid body. During concrete pouring, the travel wheel cylinders lower the base to contact the road surface to bear the load. During travel, the travel wheel cylinders raise the base to contact the road surface with the rubber-coated steel wheels, thereby achieving left-right translation and centering, ensuring that the centerline of the bridge crane aligns with the centerline of the beam.

[0055] The needle beam in this application is an anchorless track-type walking bridge-building machine, and the main longitudinal beams on both sides are telescopic needle beam structures.

[0056] The telescopic needle beam structure consists of an outer sliding beam and an inner guide beam. The inner guide beam can be telescopically moved within the outer sliding beam. Support rollers and nylon sliders are used around the inner and outer sliding beams to make the inner and outer beams slide smoothly and the inner and outer box beams bear the load together.

[0057] When the bridge crane is traveling, the rear end of the inner guide beam is anchored, and a hydraulic cylinder and card push mechanism is used to push the outer sliding beam outward, thereby enabling the bridge crane to travel. The hydraulic cylinder push card can be reversed, allowing the bridge crane to reciprocate in the travel direction.

[0058] The bridge-building machine uses a light short track + steel wheel box traveling mechanism, and the track does not need to be anchored when the bridge-building machine is traveling.

[0059] The bottom of the main longitudinal beam of the bridge-building machine is designed with a translation base system. When the bridge-building machine deviates during travel, it can translate left and right to ensure that the center line of the bridge-building machine always matches the center line of the beam section, ensuring the accuracy of the poured concrete size.

[0060] The translation base is a welded rigid body, which serves as the main load-bearing component during concrete pouring: the travel wheel track is raised off the road surface, and the base is in contact with the road surface to withstand the huge load during concrete pouring.

[0061] Through the above technical solution, compared with the prior art, the present invention has the following beneficial effects:

[0062] 1. The bridge-building machine adopts a short track + steel wheel box walking mechanism. Compared with ordinary bridge-building machines, this light short track does not require anchoring and can be easily pulled out and reversed manually, thereby improving construction efficiency.

[0063] 2. The bridge-building machine adopts a telescopic needle beam structure. When the bridge-building machine is moving, 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.

[0064] 3. The bridge-building machine adopts the hydraulic cylinder pushing card seat travel mode, which is simple in structure, safe and reliable.

[0065] 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 ensure that the center line of the bridge-building machine always coincides with the center line of the beam.

[0066] 5. By adjusting the base translation mechanism of the bridge-building machine left and right, the bridge-building machine can realize the lining construction of the curved continuous beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 This is a side structural schematic diagram of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0068] Figure 2 This is a schematic cross-sectional view of the AA structure of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0069] Figure 3 This is a schematic cross-sectional view of the BB of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0070] Figure 4 This is a schematic cross-sectional view of the CC in a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed in the present invention;

[0071] Figure 5 This is a schematic cross-sectional view of the DD in a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed in the present invention;

[0072] Figure 6 This is a schematic cross-sectional view of the EE in a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed in the present invention;

[0073] Figure 7This is a frame structure diagram of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0074] Figure 8 This is a structural diagram of the telescopic needle beam assembly of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0075] Figure 9 This is a schematic structural diagram of the upper and lower supporting nylon sliders in a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0076] Figure 10 This is a schematic structural diagram of the upper and lower supporting nylon sliders and upper and lower supporting wheels in a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0077] Figure 11 This is a schematic structural diagram of the upper and lower supporting wheels and side guide wheels of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention;

[0078] Figure 12 This is a schematic structural diagram of a telescopic beam anchorless track-type cantilever bridge-building machine proposed by the present invention before the entire bridge-building machine moves;

[0079] Figure 13 This is a schematic structural diagram of a telescopic beam anchorless track-type cantilever bridge-building machine proposed by the present invention when the bridge-building machine is moving forward;

[0080] Figure 14 This is a structural schematic diagram of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention after the formwork system reaches the next segment lining position;

[0081] Figure 15 This is a schematic structural diagram of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention when the inner guide sliding beam is retracted into place;

[0082] Figure 16 This is a schematic structural diagram of a telescopic beam anchorless track-type walking cantilever bridge-building machine proposed by the present invention, in which the rear anchoring screw of the inner guide sliding beam is securely installed.

[0083] Figure: 1. Outer formwork; 2. Outer formwork C-shaped inverted hanging frame; 3. Telescopic needle beam assembly; 4. Inner guide beam body; 5. Travel wheel cylinder; 6. Translation base assembly; 7. Travel wheel brake shoe; 8. Rubber-coated steel wheel; 9. Push cylinder; 10. Outer formwork front hanger; 11. Inner formwork system; 12. Middle hanger of front lower crossbeam; 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 flat connecting frame. 19. Inner formwork rear anchor; 20. Outer formwork rear anchor; 21. Bottom formwork rear anchor; 22. Lateral guide wheel mechanism; 23. Main longitudinal beam rear anchor distribution beam; 24. Rear anchor pull rod; 25. Rear anchor inclined pad; 26. Traveling and pushing seat; 27. Inner guide beam rear anchor cross beam; 28. Inner guide beam rear anchor support frame; 29. ​​Support frame supporting cylinder; 30. Inner guide beam rear anchor hanging platform; 31. Outer sliding beam; 32. Rear anchor shoulder pole beam; 33. Upper and lower supporting nylon sliders; 34. Upper and lower supporting wheels; 35. Side guide wheels. DETAILED DESCRIPTION

[0084] The present invention will be described in detail below with reference to the accompanying drawings.

[0085] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention 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 only used to explain the present invention and are not intended to limit the present invention.

[0086] The preferred embodiments of the present invention are described below 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.

[0087] Herein, ordinal numbers such as “first” and “second” cited in this application are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of a “second component”, and the term “second component” itself does not imply the existence of a “first component”.

[0088] To provide a thorough understanding of the embodiments of the present invention, a detailed description of the structure will be provided in the following description. It should be understood that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described below in detail, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0089] As shown in the figure, this embodiment provides a telescopic beam, anchorless, track-type, cantilever bridge-building machine for use in the field of bridge-building machines. The main structure of the bridge-building machine includes a bottom formwork 16 and two symmetrically arranged outer formworks 1. The outer formworks 1 are rigidly connected to the front C-shaped crossbeam 14 and the rear C-shaped crossbeam 17 via the outer formwork C-shaped inverted frame 2. The front C-shaped crossbeam 14 and the bottom formwork 16 are vertically fixed via the bottom formwork outer hanger 15. The inner formwork system 11 is suspended below the front C-shaped crossbeam 14 via the front lower crossbeam middle hanger 12 and the inner formwork front hanger 13. The top of the outer formwork 1 forms a three-point suspension system with the front C-shaped crossbeam 14 via the outer formwork front hanger 10. The main longitudinal beam flat connecting frame 18 spans between the two telescopic needle beam assemblies 3, its end fixed to the bridge deck via the bottom formwork rear anchor 21. The rear anchor pull rod 24 passes through the main longitudinal beam rear anchor distribution beam 23 and the rear anchor inclined pad 25 to form a multi-anchor structure.

[0090] The telescopic needle beam assembly 3 consists of an outer slide beam 31 and an inner guide beam body 4, forming a nested telescopic structure. The outer wall of the inner guide 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 slide beam 31. Side guide wheels 35 ensure precise alignment in the telescopic direction. A push cylinder 9 is connected to the bottom end of the outer slide beam 31, and its piston rod is connected to the push seat at the bottom of the inner guide beam.

[0091] The top of the translational base assembly 6 is welded to the bottom of the outer sliding beam 31. The travel wheel cylinder 5 at its base drives the travel wheels up and down, cooperating with the travel track, which is laid on the road surface for movement. The machine utilizes a short track + steel wheel box travel mechanism. Compared to conventional bridge cranes, this lightweight short track requires no anchoring and can be easily pulled out and revolved manually, improving construction efficiency.

[0092] During construction, the first step is to prepare for walking: release the constraint of the rear anchor screw of the main longitudinal beam, loosen the rear anchor of the inner guide sliding beam body 4 by 50mm, and lift the travel wheel cylinder 5 by 100mm to make the translation base assembly 6 50mm off the ground. Start the push cylinder 9 to push the outer sliding beam 31 along the inner guide sliding beam body 4 to extend 3 to 4 meters. During this process, the rear end of the inner guide sliding beam body 4 is kept anchored by the inner guide beam rear anchor support frame 28. When the outer sliding beam 31 is extended to the limit position, operate the travel cylinder to retract the translation base assembly 6 to the ground again, install the rear anchor screw of the main longitudinal beam, and release the rear anchor of the inner guide sliding beam body 4. Then drive the push cylinder 9 in the reverse direction to retract the inner guide sliding beam body 4 to the initial position and re-establish the rear anchor connection.

[0093] The translation correction system contacts the bridge deck guardrail via a lateral guide wheel mechanism 22. When the bridge crane axis deviates, the rigid welded structure of the translation base assembly 6 withstands the lateral adjustment torque. This, combined with the fine-tuning function of the support frame support cylinder 29, ensures that the deviation between the centerline of the bottom formwork 16 and the bridge axis is controlled within a ±10mm range. 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 utilizes a double-nut anti-loosening structure. During concrete pouring, the load is transferred to the bridge deck foundation via the main longitudinal beam rear anchor distribution beam 23.

[0094] Step 1: The following work should be completed before the bridge construction machine moves as a whole:

[0095] 1. Complete demoulding of the outer mold, bottom mold and inner mold, and hang the rear hanging point of the bottom mold on the C-shaped hanging leg with a hand hoist.

[0096] 2. Remove the rear anchor screw of the main longitudinal beam and loosen the rear anchor of the inner guide beam by 50mm to facilitate the upward lifting of the traveling cylinder.

[0097] 3. The travel wheel cylinder 5 is lifted upward by 100 mm, the travel wheel track contacts the ground, and the translation base is 50 mm away from the road surface.

[0098] 4. Clear away the debris on the road and reserve a passage for the bridge-building machine.

[0099] Step 2: Start the bridge-building machine's push cylinder 9 mechanism, and the bridge-building machine will move forward in one section with a length of 3 to 4 meters.

[0100] The inner guide beam slides relatively inside the cantilever beam, and the rear end of the inner guide beam is always anchored on the beam to keep the bridge-building machine balanced front and back and prevent it from overturning during travel.

[0101] Step 3: After the formwork system reaches the next segment lining position, the following work needs to be done:

[0102] 1. Operate the travel cylinder to retract, lower the translation base and make contact with the road surface. At the same time, the travel wheels are 50mm away from the road surface.

[0103] 2. First install the anchor screws at the rear of the main longitudinal beam and anchor them securely.

[0104] 3. Remove the anchor steel bars behind the inner guide beam.

[0105] 4. Loosen the rear anchor foundation screw and leave the ground.

[0106] Step 4:

[0107] Start the bridge-building machine's push cylinder 9 mechanism to retract the inner guide slide beam into place at one time.

[0108] Step 5:

[0109] 1. According to the lining status, install the rear anchor screws of the inner guide beam securely.

[0110] 2. Extend the ground jack to hold the road surface tight.

[0111] Step 6:

[0112] 1. Repeat the process in this way.

[0113] This embodiment realizes the step-by-step travel of the bridge-building machine through the alternating telescopic movement of the inner guide sliding beam body 4 and the outer sliding beam 31, and a single jacking stroke covers the workload of three track migrations in the traditional process. A light short track + steel wheel box walking mechanism is adopted, and the track does not need to be anchored when the bridge-building machine is moving. The hydraulic jacking system provides a thrust of 500 tons, and cooperates with the distributed anchor points of the rear anchor beam 27 of the inner guide beam to effectively suppress the structural deformation in the cantilever state. According to actual measurements, the displacement of the cantilever end is controlled within 30mm under the action of a level 8 wind load. The lateral adjustment function of the translation base assembly 6 enables the equipment to adapt to the working condition of a curve radius of R = 800 meters, and completes the equipment steering operation in a canyon environment with a bridge deck width of only 12 meters.

[0114] However, as is well known to those skilled in the art, the push cylinder 9 adopts a heavy-duty hydraulic cylinder for metallurgical equipment, model HSG-250 / 180-5050, cylinder diameter 250mm / rod diameter 180mm / stroke 5050mm, and a rated thrust of 500 tons; the walking wheel cylinder 5 adopts a double-acting cylinder specially used for engineering machinery, model HOB 100x70-300, cylinder diameter 100mm / rod diameter 70mm / stroke 300mm; the supporting frame support cylinder 2929 adopts a compact self-locking hydraulic cylinder, model Y-HG1-C80 / 56-200, cylinder diameter 80mm / rod diameter 56mm / stroke 200mm. The above-mentioned electrical components are all commercially available standard parts in the field of engineering machinery. Their installation interfaces and performance parameters comply with the national standard GB / T 15622 for hydraulic cylinders. Their working principles and wiring methods are commonplace and are conventional means or common knowledge. They will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0115] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention.

[0116] Terms such as "component" and the like appearing herein may refer to either a single part or a combination of multiple parts. Terms such as "installed" and "disposed" and the like appearing herein may refer to either a component being directly attached to another component or a component being attached to another component through an intermediate component. Features described herein in one embodiment may be applied to another embodiment, alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise indicated.

[0117] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A construction method for a telescopic beam anchorless track-type walking cantilever bridge-building machine, characterized in that: The following steps are involved: Step 1: (1) The outer mold, bottom mold and inner mold are demoulded, and the rear hanging point of the bottom mold is hung on the C-shaped hanging leg with a hand hoist; (2) Remove the rear anchor screw of the main longitudinal beam and loosen the rear anchor of the inner guide beam by 50 mm to facilitate the upward lifting of the travel cylinder; (3) The travel wheel cylinder is lifted upward by 100 mm, the travel wheel track contacts the ground, and the translation base is 50 mm away from the road surface; (4) Clear away the debris on the road and reserve a passage for the bridge-building machine; Step 2: (1) Start the bridge-building machine's push cylinder mechanism, and the bridge-building machine moves forward in one section for a length of 3 to 4 meters. The inner guide beam slides relatively within the cantilever beam, and the rear end of the inner guide beam is always anchored on the beam to maintain the front and rear balance of the bridge-building machine and prevent it from overturning during travel; Step 3: (1) Operate the travel cylinder to retract, lower the translation base and make contact with the road surface. At the same time, the travel wheels leave the road surface by 50 mm; (2) First install and anchor the anchor screws behind the main longitudinal beam securely; (3) Remove the anchor reinforcement after the inner guide beam; (4) Loosen the rear anchor foundation screw and leave the ground; Step 4: Start the bridge-building machine's push cylinder mechanism to retract the inner guide beam into place at one time; Step 5: (1) Install the rear anchor screws of the inner guide beam securely according to the lining status; (2) Extend the ground jack to hold the road surface tight; Step 6: And so on, the cycle repeats until the construction is completed.

2. The telescopic beam anchorless track-type walking cantilever bridge-building machine according to the construction method of claim 1 is characterized in that: include: Bottom template (16); Two outer formworks (1) are symmetrically arranged on the top of the bottom formwork (16) and are fixedly connected via a same outer formwork C-shaped inverted hanging frame (2), wherein the outer formwork C-shaped inverted hanging frame (2) comprises a front C-shaped crossbeam (14) and a rear C-shaped crossbeam (17); Internal model system (11); Two translation base assemblies (6), each translation base assembly (6) having a telescopic needle beam assembly (3) fixedly mounted on its top; A main longitudinal beam flat connecting frame (18) is fixedly connected between the two telescopic needle beam assemblies (3); The telescopic needle beam assembly (3) comprises an outer sliding beam (31) and an inner guide sliding beam body (4), and the inner guide sliding beam body (4) is slidably arranged inside the outer sliding beam (31); The bottom of the telescopic needle beam assembly (3) is provided with an anchorless track type walking wheel mechanism, which includes a walking wheel cylinder (5) fixedly mounted on the bottom of the telescopic needle beam assembly (3); a walking wheel fixedly mounted on the piston rod of the walking wheel cylinder (5); and a walking track laid on the walking surface and cooperating with the walking wheel for walking.

3. The telescopic beam wheeled walking cantilever bridge-building machine according to claim 2, characterized in that: Also includes: A lateral guide wheel mechanism (22) is fixedly mounted on one end of the rear C-shaped crossbeam (17) and the front C-shaped crossbeam (14); A plurality of bottom formwork rear anchors (21) for anchoring the bottom formwork (16) on the bridge deck; a plurality of outer formwork rear anchors (20) and inner formwork rear anchors (19) for anchoring the inner formwork system (11) on the bridge deck; The outer mold plate (1) is fixedly connected to the front C-shaped crossbeam (14) via the outer mold front suspension rod (10); the front C-shaped crossbeam (14) is fixedly installed to the bottom mold plate (16) via multiple bottom mold outer suspension rods (15); and the inner mold system (11) is fixedly installed to the front C-shaped crossbeam (14) via multiple front lower crossbeam middle suspension rods (12) and the inner mold front suspension rod (13).

4. The telescopic beam wheeled walking cantilever bridge-building machine according to claim 2, characterized in that: Both ends of the main longitudinal beam flat connecting frame (18) are fixedly connected with bottom formwork rear anchors (21); It also includes a main longitudinal beam rear anchor distribution beam (23), which is fixedly installed on the bridge deck through a rear anchor pull rod (24) and a rear anchor inclined pad (25).

5. The telescopic beam wheeled walking cantilever bridge-building machine according to claim 2, characterized in that: The telescopic needle beam assembly (3) further comprises: a support frame supporting oil cylinder (29), fixedly mounted on the bottom of the inner guide beam body (4); An inner guide beam rear anchor beam (27) fixedly connected to one end of the two inner guide sliding beam bodies (4); A rear anchor shoulder beam (32) is fixedly mounted on one end of the outer sliding beam (31); A push oil cylinder (9) has a cylinder body connected to the bottom of one end of the outer slide beam (31), and a piston rod connected to the bottom of the inner guide slide beam.

6. The telescopic beam wheeled walking cantilever bridge-building machine according to claim 5, characterized in that: Also includes: A plurality of upper and lower supporting nylon sliders (33) and upper and lower supporting wheels (34) are fixedly mounted on the inner wall of the outer guide beam (31) and are in sliding contact with the outer surface of the inner guide beam body (4); The side guide wheel (35) is fixedly mounted on the side wall of the outer sliding beam (31) and cooperates with the inner guide sliding beam body (4) to ensure the accuracy of the sliding direction.

7. The telescopic beam wheeled walking cantilever bridge-building machine according to claim 5, characterized in that: Also includes: A walking and pushing card seat (26) is fixedly installed on the bottom of the inner guide slide beam body (4); An inner guide beam rear anchor support frame (28) is fixedly mounted on one end of the inner guide beam body (4); The inner guide beam rear anchor hanging platform (30) is fixedly installed on both ends of the inner guide beam rear anchor cross beam (27).

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

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