Modularly constructed three-dimensionally adjustable bridge-building machine rear anchor device

Abstract

The utility model discloses a modular composition can three -dimensional adjustment bridge machine rear anchor device, including girder structure, level mechanism and anchoring subassembly, the girder structure is by two parallelly arranged I -joist double splices, and the adjusting gap for longitudinal adjustment is reserved between two I -joists, and the both ends of two I -joists are commonly welded with stiffened plate, and the girder structure still includes the fixed plate of fixed connection in the inboard of stiffened plate, and the level mechanism sets up at the bottom of girder structure, and including the adjusting bolt of screw thread installation in the inner wall of fixed plate, and the anchoring subassembly includes the anchor rod of the adjusting gap can be penetrated, and the upper anchoring subassembly and lower anchoring subassembly are arranged respectively on the both ends of anchor rod, and the material model of I -joist is 20b, and the width of adjusting gap is eight centimeter, and the number of adjusting bolt is two, and is symmetrically arranged in the both ends of girder structure bottom, and the bottom of adjusting bolt is equipped with the bearing pad. The utility model has the advantages of three -dimensional accurate adjustment, modular anchoring and fast efficient construction.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge-building machine rear anchor devices, specifically a modular, three-dimensionally adjustable bridge-building machine rear anchor device. Background Technology

[0002] In the cantilever construction of large bridges, the bridge-building machine, as the core mobile formwork equipment, plays a crucial role in ensuring its overturning safety and the accuracy of the bridge's alignment. The post-anchoring device, which can reliably transfer the load of the bridge-building machine to the already cast beam, is the key system for achieving this goal.

[0003] The fixed rear anchoring device, which combines a rigid anchor beam with a precision-rolled threaded steel anchor rod, is a widely used conventional technical solution that can meet basic anti-overturning safety requirements. Ordinary rear anchoring devices typically use integrally welded box-shaped or I-beams as anchor beams, directly locking and fixing them with anchor rods pre-embedded in the beam. However, in actual use, especially when the bridge deck has longitudinal or transverse slopes or construction errors causing deviations in the anchoring point elevation or planar position, the rigid integral anchor beam structure struggles to effectively self-adjust, leading to a reduced contact area between the anchor rod and the anchor beam and a tendency for stress concentration. Furthermore, the simple pad and nut anchoring method lacks the ability to level and position the anchor beam itself. Under repeated loads, the anchor rod is prone to eccentric stress, directly reducing the reliability of the anchoring system and creating an unclear force transmission path. This can lead to problems such as excessive anchor rod stress or excessive local deformation of the anchor beam, affecting construction safety and quality. Utility Model Content

[0004] The purpose of this utility model is to provide a modular, three-dimensionally adjustable rear anchor device for bridge building machines, which has the advantages of precise three-dimensional adjustment, modular anchoring, and rapid and efficient construction. It solves the problems of insufficient adjustment capacity, poor adaptability to pre-embedded screw deviation, and low anchoring efficiency of existing rear anchor devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A modular, three-dimensionally adjustable bridge-building machine rear anchoring device includes a main beam structure, a leveling mechanism, and an anchoring assembly. The main beam structure is composed of two parallel H-beams joined together, with an adjustment gap reserved between the two H-beams for longitudinal adjustment. Stiffening plates are welded to both ends of the two H-beams. The main beam structure also includes a fixing plate fixed to the inner side of the stiffening plate. The leveling mechanism is located at the bottom of the main beam structure and includes adjusting bolts threaded onto the inner wall of the fixing plate. The anchoring assembly includes an anchor rod that can penetrate the adjustment gap, with an upper anchoring assembly and a lower anchoring assembly respectively provided at the upper and lower ends of the anchor rod.

[0007] Preferably, the H-beam is made of material type 20b and the width of the adjustment gap is eight centimeters.

[0008] It is worth noting that the core function of adjusting the gap is to provide the anchor rod with a preset and sufficient longitudinal movement space along the bridge direction. This design allows the anchor rod to be aligned and compensated for by adaptive sliding within the gap when there is a longitudinal deviation of the pre-embedded thread rod in the beam within the allowable construction range, without the need to forcibly correct the pre-embedded parts.

[0009] Preferably, there are two adjusting bolts, which are symmetrically arranged at both ends of the bottom of the main beam structure, and the bottom of the adjusting bolts is provided with a pressure bearing plate.

[0010] It is worth noting that the adjusting bolts and the fixed plate welded to the inside of the stiffening plate form a precision threaded adjusting pair. This design converts point contact support into reliable planar threaded transmission. By rotating the adjusting bolts at both ends, the height of both ends of the main beam structure can be independently and precisely finely adjusted, thereby effectively correcting installation deviations caused by longitudinal and transverse slopes or local unevenness of the bridge deck, and ensuring that the upper plane of the main beam reaches a level state.

[0011] Preferably, the anchor bolt is made of precision-rolled threaded steel.

[0012] It is worth noting that by selecting high-precision threaded steel as the anchor material, the key is that its continuous high-precision threads not only provide a reliable meshing foundation for the nut, but also give it extremely high tensile strength. This material property ensures that the anchor will not yield or break when subjected to the huge rear anchor tension of the bridge-building machine, and enhances the adaptability of the device to different anchoring depth requirements.

[0013] Preferably, the upper anchoring assembly includes an anchoring pad and a locking nut threaded onto the outer wall of the anchor rod, which are sequentially fitted from top to bottom; the lower anchoring assembly includes a bearing pad and a fixing nut threaded onto the outer wall of the anchor rod.

[0014] It is worth noting that the upper and lower anchoring components together form an efficient and safe force transmission mechanism. The anchoring plate and the bearing plate convert the concentrated tensile force borne by the anchor rod into a uniform pressure, which is effectively transmitted to the flange of the main beam structure and the concrete surface of the beam, avoiding structural damage caused by stress concentration. The double locking structure of the locking nut and the fixing nut ensures the long-term stability of the preload under dynamic load, forming a redundant anti-loosening guarantee.

[0015] Preferably, the dimensions of the anchor plate and the bearing plate are larger than the width of the adjustment gap.

[0016] It is worth noting that by designing the dimensions of the anchor plate and the bearing plate to be much larger than the width of the adjustment gap, the core purpose is to maximize the contact area with the I-beam flange. This design significantly reduces the compressive stress on the contact surface, effectively prevents the local buckling deformation that may occur in the main beam flange under huge loads, and ensures that the load can be uniformly transferred through the main beam structure.

[0017] Preferably, the main beam structure is also equipped with a horizontal monitoring device, which includes an electronic level fixed to the upper end of the I-beam.

[0018] It is worth noting that the electronic level is the core monitoring component for achieving precise and efficient leveling. It provides real-time and quantitative data feedback on the horizontal status of the main beam structure, transforming the traditional "experience-based estimation" leveling process into "precise control based on data." This allows operators to quickly and intuitively judge the leveling effect and guide the rotation direction and number of turns of the adjusting bolts.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The main beam structure of this utility model is formed by parallel splicing of double I-beams and welding stiffening plates inside to form a box-shaped load-bearing body with high bending and torsional stiffness. The adjustment gap reserved between the double I-beams and the adjustment bolts integrated with the fixing plate welded to the inside of the stiffening plate together constitute the core of the three-dimensional adjustment of the device. This modular design allows the anchor rod to slide longitudinally along the gap to actively compensate for the longitudinal deviation of the pre-embedded screw rod. At the same time, the vertical precision leveling and lateral levelness control of the main beam structure can be achieved by independently rotating the adjustment bolts at both ends. The upper anchoring component and the lower anchoring component evenly transfer the load through the pad and double nut structure. Attached Figure Description

[0021] Figure 1 This is an isometric view of the overall structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural breakdown diagram of the main beam structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural breakdown diagram of the leveling mechanism of this utility model;

[0024] Figure 4 This is a three-dimensional structural disassembly diagram of the anchoring component of this utility model.

[0025] Reference numerals: 101, I-beam; 102, adjusting gap; 103, stiffening plate; 104, fixing plate; 201, adjusting bolt; 202, bearing pad; 301, anchor bolt; 302, upper anchoring assembly; 303, lower anchoring assembly; 304, anchoring pad; 305, lock nut; 306, bearing pad; 307, fixing nut; 401, electronic level. Detailed Implementation

[0026] 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.

[0027] To address the problems of insufficient adjustment capability of the rear anchoring device, poor adaptability to pre-embedded screw misalignment, and low anchoring efficiency in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-4 ;

[0028] A modular, three-dimensionally adjustable bridge-building machine rear anchoring device includes a main beam structure, a leveling mechanism, and an anchoring assembly. The main beam structure is composed of two parallel H-beams 101, with an adjustment gap 102 reserved between the two H-beams 101 for longitudinal adjustment. Stiffening plates 103 are welded to both ends of the two H-beams 101. The main beam structure also includes a fixing plate 104 fixed to the inner side of the stiffening plate 103. The leveling mechanism is located at the bottom of the main beam structure and includes adjusting bolts 201 threaded onto the inner wall of the fixing plate 104. The anchoring assembly includes an anchor rod 301 that can penetrate the adjustment gap 102. An upper anchoring assembly 302 and a lower anchoring assembly 303 are respectively provided at the upper and lower ends of the anchor rod 301.

[0029] The main beam structure is formed by parallel splicing of double I-beams 101 and welding stiffening plates 103 inside to form a box-shaped load-bearing body with high bending and torsional stiffness. The adjustment gap 102 reserved between the double I-beams 101 and the adjustment bolts 201 integrated with the fixing plate 104 welded to the inside of the stiffening plate 103 together constitute the core of the three-dimensional adjustment of the device. This modular design allows the anchor rod 301 to slide longitudinally along the gap to actively compensate for the longitudinal deviation of the pre-embedded screw rod. At the same time, the vertical precision leveling and lateral levelness control of the main beam structure are achieved by independently rotating the adjustment bolts 201 at both ends. The upper anchoring component 302 and the lower anchoring component 303 distribute the load evenly through the pad and double nut structure, ultimately achieving adaptive compensation and fast and reliable anchoring for the deviation of the pre-embedded screw rod within the range.

[0030] Please see Figure 2The material of I-beam 101 is 20b, and the width of the adjustment gap 102 is eight centimeters. The core function of the adjustment gap 102 is to provide a preset and sufficient longitudinal movement space for anchor rod 301 along the bridge direction. This design allows for alignment compensation through the adaptive sliding of anchor rod 301 within the gap, without the need for forced correction of the embedded parts when there is a longitudinal deviation within the allowable construction range of the pre-embedded thread rod in the beam.

[0031] The main beam structure is also equipped with a level monitoring device, which includes an electronic level 401 fixed to the upper end of the I-beam 101. The electronic level 401 is the core monitoring component for achieving precise and efficient leveling. It provides real-time and quantitative data feedback on the level status of the main beam structure, transforming the traditional "experience-based estimation" leveling process into "precise control based on data". This allows operators to quickly and intuitively judge the leveling effect and guide the rotation direction and number of turns of the adjusting bolt 201.

[0032] Please see Figure 3 Anchor bolt 301 is made of precision-rolled threaded steel. The key reason for choosing precision-rolled threaded steel as the material for anchor bolt 301 is that its continuous high-precision threads not only provide a reliable meshing foundation for the nut, but also give it extremely high tensile strength. This material characteristic ensures that anchor bolt 301 will not yield or break when subjected to the huge rear anchor tension of the bridge-building machine, thus enhancing the adaptability of the device to different anchoring depth requirements.

[0033] The upper anchoring assembly 302 includes an anchoring pad 304 and a locking nut 305 threaded onto the outer wall of the anchor rod 301, which are sequentially fitted from top to bottom. The lower anchoring assembly 303 includes a bearing pad 306 and a fixing nut 307 threaded onto the outer wall of the anchor rod 301. The upper and lower anchoring assemblies together form an efficient and safe force transmission mechanism. The anchoring pad 304 and the bearing pad 306 convert the concentrated tensile force borne by the anchor rod 301 into a uniformly distributed pressure, which is effectively transmitted to the flange of the main beam structure and the concrete surface of the beam, avoiding structural damage caused by stress concentration. The double locking structure of the locking nut 305 and the fixing nut 307 ensures the long-term stability of the preload under dynamic load, forming a redundant anti-loosening guarantee.

[0034] The dimensions of the anchor plate 304 and the bearing plate 306 are larger than the width of the adjustment gap 102. By designing the dimensions of the anchor plate 304 and the bearing plate 306 to be much larger than the width of the adjustment gap 102, the core purpose is to maximize the contact area with the flange of the I-beam 101. This design significantly reduces the compressive stress on the contact surface, effectively prevents the local buckling deformation that may occur in the flange of the main beam under huge loads, and ensures that the load can be uniformly transferred through the main beam structure.

[0035] Please see Figure 4 There are two adjusting bolts 201, which are symmetrically arranged at both ends of the bottom of the main beam structure. The bottom of the adjusting bolt 201 is provided with a bearing pad 202. The adjusting bolt 201 and the fixing plate 104 welded and fixed to the inner side of the stiffening plate 103 form a precision threaded adjusting pair. This design converts point contact support into reliable planar threaded transmission. By rotating the adjusting bolts 201 at both ends respectively, the height of both ends of the main beam structure can be independently and precisely finely adjusted, thereby effectively correcting the installation deviation caused by the longitudinal and transverse slopes of the bridge deck or local unevenness, and ensuring that the upper plane of the main beam reaches a horizontal state.

[0036] Working principle: During construction, the horizontal status of the main beam structure is first monitored by an electronic level 401. Then, the adjusting bolts 201 at both ends are rotated synchronously or alternately for preliminary vertical leveling. The bearing plate 202 ensures stable force during the leveling process. After the bridge-building machine moves to the predetermined position, the anchor rod 301 is inserted along the adjusting gap 102 to align it with the pre-embedded anchor point of the beam. This gap provides the necessary longitudinal adjustment margin for the anchor rod 301 to compensate for the deviation of the pre-embedded parts. Subsequently, the bearing plate 306 and the fixing nut 307 are installed in sequence to form the lower anchoring component 303, and the anchoring plate 304 and the locking nut 305 form the upper anchoring component 302. The upper and lower nuts are tightened synchronously using a synchronous hydraulic torque wrench. During this process, the stiffening plate 103 ensures the overall rigidity of the main beam structure and prevents local deformation. If the screw is misaligned, the adjusting bolt 201 can be finely adjusted again to change the height of the main beam. At the same time, the longitudinal position of the anchor rod 301 can be finely adjusted using the adjusting gap 102 to achieve comprehensive compensation in three dimensions. Finally, the load is evenly transferred to the main beam structure and beam body through the anchor rod 301 and the upper and lower pads, thus completing the safe anchoring.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A modular, three-dimensionally adjustable bridge-building machine rear anchoring device, comprising a main beam structure, a leveling mechanism, and an anchoring assembly, characterized in that, The main beam structure is composed of two parallel I-beams (101) arranged in pairs. An adjustment gap (102) is reserved between the two I-beams (101) for longitudinal adjustment. Stiffening plates (103) are welded to both ends of the two I-beams (101). The main beam structure also includes a fixing plate (104) fixed to the inside of the stiffening plate (103). The leveling mechanism is set at the bottom of the main beam structure and includes adjusting bolts (201) threaded on the inner wall of the fixing plate (104). The anchoring assembly includes an anchor rod (301) that can penetrate the adjustment gap (102). An upper anchoring assembly (302) and a lower anchoring assembly (303) are respectively set at the upper and lower ends of the anchor rod (301).

2. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 1, characterized in that, The material type of the I-beam (101) is 20b, and the width of the adjustment gap (102) is eight centimeters.

3. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 1, characterized in that, There are two adjusting bolts (201), which are symmetrically arranged at both ends of the bottom of the main beam structure. The bottom of the adjusting bolts (201) is provided with a pressure pad (202).

4. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 1, characterized in that, The anchor bolt (301) is made of precision rolled threaded steel.

5. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 1, characterized in that, The upper anchoring assembly (302) includes an anchoring pad (304) that is sequentially fitted onto the anchor rod (301) from top to bottom and a locking nut (305) that is threaded onto the outer wall of the anchor rod (301). The lower anchoring assembly (303) includes a bearing pad (306) and a fixing nut (307) that is threaded onto the outer wall of the anchor rod (301).

6. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 5, characterized in that, The dimensions of the anchor plate (304) and the bearing plate (306) are larger than the width of the adjustment gap (102).

7. The modular, three-dimensionally adjustable bridge-building machine rear anchor device according to claim 1, characterized in that, The main beam structure is also equipped with a horizontal monitoring device, which includes an electronic level (401) fixed to the upper end of the I-beam (101).

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