CN-121760294-B - Continuous beam bridge fabrication machine and construction method

CN121760294BCN 121760294 BCN121760294 BCN 121760294BCN-121760294-B

Abstract

The invention relates to the technical field of bridge fabrication machines and discloses a continuous beam bridge fabrication machine and a construction method, wherein the continuous beam bridge fabrication machine comprises a bridge fabrication machine body and a plurality of vibrators, wherein the lower part of the bridge fabrication machine body is fixedly connected with a plurality of mounting plates, the vibrators are fixedly connected to the mounting plates, anti-falling assemblies are arranged on two sides of each vibrator, each anti-falling assembly is used for preventing the vibrator from falling, each anti-falling assembly comprises two fixing rods, each fixing rod is fixedly connected to two sides of each vibrator, two sliding plates are connected inside each fixing rod in a sliding manner, and a T-shaped clamping structure is formed by the fixing rods and the sliding plates of each anti-falling assembly and matched with mounting grooves.

Inventors

LU JINGZHONG
YIN LAIRONG
Zhi Xujin
PAN QIN
ZHOU TAO
LU LING
MA XIN
LIU LI
KANG ZHONG
CHEN WULIN
LIU XIANG
PENG XUEJUN

Assignees

中铁五局集团第一工程有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260304

Claims (7)

1. The continuous beam bridge fabrication machine comprises a bridge fabrication machine body (1) and a plurality of vibrators (12), and is characterized in that the lower part of the bridge fabrication machine body (1) is fixedly connected with a plurality of mounting plates (11), the vibrators (12) are fixedly connected to the mounting plates (11), and anti-falling assemblies (2) are arranged on two sides of each vibrator (12); the anti-falling assembly (2) is used for preventing the vibrator (12) from falling; The anti-falling assembly (2) comprises two fixing rods (21), the two fixing rods (21) are respectively and fixedly connected to two sides of the vibrator (12), two sliding plates (22) are fixedly connected to the inside of the fixing rods (21), two limiting plates (23) are fixedly connected to the inside of the fixing rods (21), the limiting plates (23) are fixedly connected with the sliding plates (22), one side of each limiting plate (23) is fixedly connected with a first spring (24), one end, far away from each limiting plate (23), of each first spring (24) is fixedly connected with the corresponding sliding plate (22), the fixing rods (21) are in sliding connection with the corresponding mounting plate (11), and the sliding plates (22) and the corresponding mounting plate (11) form limiting interference fit; Two mounting grooves (111) are formed in the mounting plate (11), and one end of the fixing rod (21) is positioned in the mounting groove (111) and is in sliding guide fit with the mounting groove (111); Two first sliding grooves (211) are formed in the fixing rod (21), the groove direction of the first sliding grooves (211) is consistent with the width direction of the fixing rod (21), the length of the first sliding grooves (211) is consistent with the length of the sliding plate (22), the first sliding grooves (211) penetrate through the fixing rod (21), and the sliding plate (22) is positioned in the first sliding grooves (211) and forms sliding guide fit with the first sliding grooves (211); A sliding groove six (221) is formed in one side of the sliding plate (22), the groove direction of the sliding groove six (221) is consistent with the length direction of the sliding plate (22), a limiting plate (23) is positioned in the sliding groove six (221) and forms sliding guide fit with the sliding groove six (221), one end of the limiting plate (23) deviating from the sliding plate (22) is fixedly connected with a sliding groove one (211), and a spring one (24) is positioned in the sliding groove six (221); The inside of dead lever (21) is provided with locking mechanical system (25), locking mechanical system (25) are used for locking the position of sliding plate (22), locking mechanical system (25) are including locking plate (251), locking plate (251) sliding connection is in dead lever (21), the lower part fixedly connected with of locking plate (251) triggers piece (252), the lower part fixedly connected with of locking plate (251) a plurality of spring two (253), the one end that spring two (253) deviates from locking plate (251) is fixedly connected with dead lever (21), the upper portion fixedly connected with stopper (254) of sliding plate (22), locking plate (251) butt is in one side of stopper (254); A fourth chute (214) is formed in the fixing rod (21), the groove direction of the fourth chute (214) is consistent with the radial direction of the fixing rod (21), a locking plate (251) is positioned in the fourth chute (214) and forms sliding guide fit with the fourth chute (214), one end of a trigger block (252) is positioned in the fourth chute (214), and the other end of the trigger block (252) penetrates through the fixing rod (21); The section of the mounting groove (111) is trapezoid, and the sliding plate (22) and the side surface of the mounting groove (111) form wedge-shaped fit.
2. The continuous beam bridge fabrication machine according to claim 1, wherein two second sliding grooves (212) are formed in the fixing rod (21), the groove direction of the second sliding grooves (212) is consistent with the groove direction of the first sliding grooves (211), the limiting block (254) is located in the second sliding grooves (212) and forms sliding guide fit with the second sliding grooves (212), and the second sliding grooves (212) are communicated with the first sliding grooves (211).
3. The continuous beam bridge fabrication machine according to claim 2, further comprising a locking assembly (3), wherein the locking assembly (3) is arranged inside the bridge fabrication machine body (1), the locking assembly (3) comprises two column gears (31), the two column gears (31) are all rotationally connected inside the fixed rod (21), the upper portion of the sliding plate (22) is fixedly connected with a toothed plate (36), the toothed plate (36) and the column gears (31) are meshed with each other, one side of the column gears (31) is fixedly connected with a ratchet gear (32), the inside of the fixed rod (21) is rotationally connected with two first rotating rods (33), one end of each first rotating rod (33) is fixedly connected with a ratchet plate (34), the outer wall of each first rotating rod (33) is sleeved with a coil spring (35), one end of each coil spring (35) is fixedly connected with the outer wall of each first rotating rod (33), the other end of each ratchet plate (34) is deviated from the first rotating rod (33) and is abutted against the ratchet gear (32), and the ratchet plate (34) and the ratchet gear (32) form limit fit.
4. A continuous beam bridge fabrication machine according to claim 3, further comprising a switching assembly (4), the switching assembly (4) being adapted to release the unidirectional rotation limitation of the locking assembly (3); The switching assembly (4) comprises a switching mechanism (41), the switching mechanism (41) comprises a sliding block (411), the sliding block (411) is slidably connected to the upper portion of the fixed rod (21), two connecting rods (412) are rotatably connected to the lower end of the sliding block (411), one end of each connecting rod (412) deviating from the sliding block (411) is rotatably connected with a rotating rod III (413), and one end of each rotating rod III (413) deviating from each connecting rod (412) is fixedly connected to one rotating rod I (33).
5. The continuous beam bridge fabrication machine according to claim 4, wherein the switching assembly (4) further comprises a limiting mechanism (42), the limiting mechanism (42) comprises a limiting rod (421), the limiting rod (421) is slidably connected to the upper portion of the fixed rod (21), one end of the limiting rod (421) is slidably connected to the inside of the sliding block (411), a spring buckle (422) is arranged in the inside of the fixed rod (21), and the spring buckle (422) is used for limiting the sliding of the limiting rod (421).
6. The continuous beam bridge fabrication machine according to claim 5, wherein the upper part of the fixed rod (21) is provided with a five (215) chute and a three (213) chute, the five (215) chute is vertical to the radial direction of the fixed rod (21), the limiting rod (421) is positioned in the five (215) chute and forms sliding guide fit with the five (215) chute, The groove direction of the third chute (213) is consistent with the radial direction of the fixed rod (21), the sliding block (411) is positioned in the third chute (213) and forms sliding guide fit with the third chute (213), And the fifth chute (215) is communicated with the third chute (213).
7. A method of constructing a continuous beam bridge fabrication machine as claimed in claim 6, comprising the steps of: Firstly, preparing construction, measuring a site and assembling a continuous beam bridge fabrication machine; Step two, the continuous beam bridge fabrication machine is in place, a traveling mechanism is started to move the whole machine to a designed position of a span to be constructed, and a locking support system ensures stable operation; Step three, hoisting and aligning the segments, hoisting the precast beam segments to an alignment area through a matched hoisting device, and accurately adjusting the axes, the heights and the joint gaps of the segments to design parameters through a fine adjustment system; step four, splicing the sections, namely coating epoxy adhesives on the matched surfaces, splicing adjacent sections according to a preset sequence, and applying temporary prestress in time to ensure that joints are closely attached and the sections form a temporary stable whole; Pre-stressing construction, namely finishing longitudinal, transverse and vertical pre-stressing tendons to penetrate bundles, stretch and anchor in batches according to a design sequence and control force after the adhesive reaches the design strength, and synchronously grouting a pre-stressing duct; step six, system conversion and forward movement, namely dismantling the temporary support, completing conversion of a beam body stress system into a permanent continuous beam system, unlocking a continuous beam bridge fabrication machine, and forward moving to a next span to be constructed; and seventhly, carrying out auxiliary construction and acceptance, carrying out construction of the end sealing anchor of the beam body, paving the bridge deck and the anti-collision guardrail, synchronously detecting the linearity and the stress of the beam body, and completing the main construction after the acceptance is qualified.

Description

Continuous beam bridge fabrication machine and construction method Technical Field The invention belongs to the technical field of bridge fabrication machines, and particularly relates to a continuous beam bridge fabrication machine and a construction method. Background The continuous beam bridge fabrication machine is core special equipment for splicing construction of large-span continuous beam bridge precast segments in highway and railway engineering, and the core is used for realizing key procedures of overhead lifting, accurate alignment, splicing formation and the like of the precast beam segments, thereby providing an integrated operation platform for efficient construction of the continuous beam bridge. The vibrator is a key accessory matched with the equipment, a plurality of groups of vibrators are arranged at the lower part of the bridge fabrication machine body, the compaction molding of concrete mixture is realized through high-frequency vibration, the vibrator is an important part for guaranteeing the pouring construction quality of a bridge, the vibrator is required to be in a working state of high-frequency vibration for a long time due to the requirement of construction working conditions, and is arranged at high-altitude operation points of the bridge fabrication machine, the reliability of the vibrator and the bridge fabrication machine body directly determines the construction safety and the equipment integrity, and an anti-falling protection structure is required to be arranged for the vibrator in the industry, so that the high-altitude falling accident caused by looseness of a fixing piece is avoided. The traditional scheme adopts wire rope/iron chain secondary to hang more, the spacing collocation bolt of staple bolt is locking (double nut, spring washer), the mode that adopts wire rope to hang now prevents that the vibrator from dropping, wire rope is flexible component, only can bear the pulling force, do not possess bending resistance, anti side shift and antitorque commentaries on classics rigidity, and after the installation can't keep the state of flare and be loose form, the horizontal displacement of vibrator, swing and torsion do not have constraint ability completely, the theory of operation of vibrator is that drive vibrating unit motion produces vibration through drive arrangement, and the core of vibration effect depends on the inertial impact force of vibrating unit, in order to ensure the required good vibration effect of construction, the vibrating unit usually needs to design great quality, this whole quality that leads to the vibrator is heavier, use for a long time as the vibrator, the bolt of fixed vibrator can loosen under continuous vibration, lead to the vibrator to break away from the erection point position, it drops and not steadily breaks away from perpendicularly, there is instantaneous impact after the bolt looseness, produce relative displacement and slant speed with the wire rope, the stack forms initial swing kinetic energy directly, the continuous side force's of construction scene load, the continuous side force effect of vibration, this protective structure is not had to drive the vibrating unit motion to produce vibration, the vibration template is greatly lost when vibration position is difficult to the vibration position is greatly lost, the vibration template is produced to the vibration amplitude is reduced, the vibration amplitude is reduced when vibration is reduced to the vibration is reduced, and vibration is reduced. Disclosure of Invention The invention provides a continuous beam bridge fabrication machine and a construction method, which solve the technical problems that in the prior art, after a vibrator falls off, a steel wire rope cannot restrict the displacement and swing of the vibrator, so that the vibrator shakes an impact template and damages the vibrator. The invention provides a continuous beam bridge fabrication machine, which comprises a bridge fabrication machine body and a plurality of vibrators, wherein the lower part of the bridge fabrication machine body is fixedly connected with a plurality of mounting plates, the vibrators are fixedly connected to the mounting plates, and anti-falling assemblies are arranged on two sides of each vibrator; the anti-falling assembly is used for preventing the vibrator from falling; The anti-falling assembly comprises two fixing rods, the two fixing rods are fixedly connected to two sides of the vibrator respectively, two sliding plates are connected to the inside of the fixing rods in a sliding mode, two limiting plates are fixedly connected to the inside of the fixing rods, the limiting plates are connected to the sliding plates in a sliding mode, one side of each limiting plate is fixedly connected with a first spring, one end of each first spring, far away from each limiting plate, is fixedly connected to each sliding plate, the fixing rods are connected to the mounting plate in a sli