CN117845749A - Track adjustable supporting leg for bridge construction and track conversion method - Google Patents

Track adjustable supporting leg for bridge construction and track conversion method Download PDF

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Publication number
CN117845749A
CN117845749A CN202311530627.3A CN202311530627A CN117845749A CN 117845749 A CN117845749 A CN 117845749A CN 202311530627 A CN202311530627 A CN 202311530627A CN 117845749 A CN117845749 A CN 117845749A
Authority
CN
China
Prior art keywords
walking
leg
track
rail
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311530627.3A
Other languages
Chinese (zh)
Inventor
文定旭
吴睿
余汉锦
唐黎明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
Original Assignee
CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd filed Critical CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
Priority to CN202311530627.3A priority Critical patent/CN117845749A/en
Publication of CN117845749A publication Critical patent/CN117845749A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C5/00—Base supporting structures with legs
    • B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
    • B66C5/04—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods with runways or tracks supported for movements relative to bridge or gantry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C7/00—Runways, tracks or trackways for trolleys or cranes
    • B66C7/12—Devices for changing direction of travel or for transferring from one runway to another; Crossings; Combinations of tracks of different gauges
    • B66C7/14—Runway interlocking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/08—Runners; Runner bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/10—Undercarriages or bogies, e.g. end carriages, end bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/14—Trolley or crane travel drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
    • E02B3/068—Landing stages for vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention provides a track adjustable supporting leg for bridge construction and a track conversion method.A lifting mechanism is arranged on a walking track through a plurality of walking mechanisms, and the walking track is arranged on a bridge pier; the lifting mechanism is connected with the lifting frame, the lifting frame is in sliding connection with the walking support, the lower end of the walking support is connected with the walking mechanism, the walking mechanism is arranged on a walking track, the walking track is arranged on a pier through a plurality of track supporting legs, the walking supporting legs are further arranged, the upper positions of the walking supporting legs are connected with the lifting frame through a plurality of main lifting cylinders, and the middle positions of the walking supporting legs are connected with the walking support through a plurality of supporting leg lifting cylinders. The jacking platform can separate the platform main part from the surface of water, avoids the influence of adverse sea conditions during operation, and the crawler crane on the platform can realize high accuracy hoist and mount, but still need look for the construction window period under its shift operating mode, and pier engineering shoreline is longer, and whole construction shift times is more, and its landing leg length is limited simultaneously, also is difficult to adapt to the pier construction of deep water deep weak stratum.

Description

Track adjustable supporting leg for bridge construction and track conversion method
Technical Field
The invention relates to the technical field of wharf construction, in particular to a track adjustable supporting leg for bridge construction and a track conversion method.
Background
The high pile wharf structure is one of the main types of harbor hydraulic buildings, is quite common in application, has the characteristics of multiple component types, large construction quantity on water, long construction period and the like, and is particularly suitable for adopting an assembled structure.
Prefabrication and assembly have become a trend, and not only have the applications been gradually started in the bridge construction field, but also the prefabrication and assembly have gradually started to replace cast-in-place in the construction of wharfs. The bridge is mainly constructed along the longitudinal bridge direction, and the bridge girder erection machine is adopted to construct the bridge girder in a bridge girder-by-bridge direction, so that the problem of erecting the prefabricated parts can be well solved, but the wharf is different from the bridge girder, the number of the plane prefabricated parts is large, and the space for the bridge girder erection machine to stand is small or even none. Therefore, in order to solve the problem of erecting the prefabricated components of the wharf, the construction efficiency is improved, the influence on the surrounding environment is reduced, the labor investment is reduced, the construction risk is reduced, the construction quality is ensured, and a large-scale integrated construction device capable of meeting the requirements is needed.
The construction of the fabricated wharf generally adopts four engineering equipment such as a floating crane ship, a lifting platform, a crawler crane, a construction platform, a crawler crane and a bridge girder erection machine.
The floating crane ship is most traditional, overseas projects are also commonly applied by adopting crawler cranes and refuted organization floating cranes due to the lack of large-scale crane ships, but the floating crane ship is greatly influenced by severe sea conditions, and is difficult to adapt to offshore wharfs construction of the open sea, such as the floating ship construction considered at the beginning of a bucky tower Hu Bu wharf, and the floating crane ship construction is finally adjusted to a full trestle construction process under medium-long period waves.
The jacking platform can separate the platform main part from the surface of water, avoids the influence of adverse sea conditions during operation, and the crawler crane on the platform can realize high accuracy hoist and mount, but still need look for the construction window period under its shift operating mode, and pier engineering shoreline is longer, and whole construction shift times is more, and its landing leg length is limited simultaneously, also is difficult to adapt to the pier construction of deep water deep weak stratum.
Disclosure of Invention
The invention mainly aims to provide a rail adjustable supporting leg for bridge construction and a rail conversion method, which solve the problems that a dock engineering shoreline is long, the overall construction shift times are more, and meanwhile, the supporting leg is limited in length and is difficult to adapt to dock construction of deep and thick weak strata.
In order to solve the technical problems, the invention adopts the following technical scheme: the lifting mechanism is arranged on a walking rail through a plurality of walking mechanisms, and the walking rail is arranged on a pier;
the lifting mechanism is connected with the lifting frame, the lifting frame is in sliding connection with the walking support, the lower end of the walking support is connected with the walking mechanism, the walking mechanism is arranged on a walking track, the walking track is arranged on a pier through a plurality of track supporting legs, the walking supporting legs are further arranged, the upper positions of the walking supporting legs are connected with the lifting frame through a plurality of main lifting cylinders, and the middle positions of the walking supporting legs are connected with the walking support through a plurality of supporting leg lifting cylinders.
In the preferred scheme, the walking support leg comprises four vertically arranged columns, a plurality of fixed connecting rods are transversely arranged at the lower parts of the four vertical columns, and adjacent fixed connecting rods are connected through movable connecting longitudinal beams;
the lower ends of the four vertical columns are also provided with walking leg oil cylinders.
In the preferred scheme, swing joint longeron both ends are equipped with the arc draw-in groove, and the arc draw-in groove card is on fixed connection pole.
In the preferred scheme, sliding frames are arranged on two sides of the jacking frame, columns of the walking support legs penetrate through the sliding frames and are in sliding connection with the sliding frames, and movable second pin shafts are further arranged, and the second pin shafts penetrate through the sliding frames and the walking support legs to fix the jacking frame and the walking support legs into a whole;
the first pin shaft penetrates through the jacking frame and the walking support to fix the jacking frame and the walking support into a whole.
In the preferred scheme, running gear includes butt joint frame and walking wheel, and the walking wheel setting is in butt joint frame below, and the walking wheel passes through motor drive and rotates, and main jacking cylinder upper end is connected with the jacking frame middle part, and main jacking cylinder lower extreme is connected with the butt joint frame.
In the preferred scheme, a plurality of running mechanisms are connected through a connecting beam, and two ends of the connecting beam are respectively connected with the butt joint frame.
In the preferred scheme, the two sides of the butt joint frame are provided with stable sliding frames, the walking support legs are columns which penetrate through the stable sliding frames and are in sliding connection with the stable sliding frames, the middle parts of the walking support legs are provided with connected pushing longitudinal beams, one ends of the support leg lifting cylinders are connected with the pushing longitudinal beams, and the other ends of the support leg lifting cylinders are connected with the stable sliding frames.
In the preferred scheme, the track supporting legs are arranged between two sides of the walking supporting leg at the lower end, each track supporting leg comprises a plurality of supporting rods, and the plurality of vertical supporting rods are connected through a plurality of horizontal and diagonal threaded pull rods;
a plurality of track supporting leg oil cylinders are arranged below the vertical supporting rods of the track supporting legs.
In the preferred scheme, the walking track includes many short tracks, and short track one end is equipped with concave spread groove, and the other end is equipped with the protruding connector of cooperation concave spread groove, and many short tracks pass through concave spread groove and protruding connector first concatenation constitution walking track, and short track hookup location passes through the screw rod and connects.
The method comprises the following steps:
s1, a walking rail moves forwards to modulate a walking support leg and a walking mechanism;
s2, the first pin shaft is pulled out firstly, the jacking frame is separated from the walking support, the main jacking oil cylinder starts to push the jacking frame, the walking wheel of the walking mechanism starts to bear force, the whole lifting mechanism is lifted, meanwhile, the walking support leg is lifted away from the bridge pier, and the support leg lifting oil cylinder contracts when being lifted along with the walking support leg;
s3, adjusting a walking leg oil cylinder below the walking leg, wherein the walking leg oil cylinder is abutted against the surface of the pier, the walking leg is consistent with the track leg in stress, and the second pin shaft keeps the walking leg and the jacking frame in an integral structure;
s4, the supporting leg lifting oil cylinder starts to push the butt joint frame of the travelling mechanism, the travelling mechanism starts to lift away from the travelling rail through the supporting leg lifting oil cylinder, meanwhile, the main lifting oil cylinder also contracts and pulls the travelling mechanism away from the travelling rail, and meanwhile, the rail supporting leg oil cylinder below the travelling rail starts to contract and descend;
s5, inserting a first pin shaft into positions of the control jacking frame and the walking support, wherein: the walking bracket is provided with a plurality of pin holes, so that the jacking bracket and the walking bracket are stabilized;
s6, respectively hoisting two ends of a walking rail by a first hoisting machine and a second hoisting machine of the hoisting mechanism, hoisting the walking rail away from the surface of a pier, dismantling a movable connecting longitudinal beam below a walking support leg, moving the forefront rail support leg of the walking rail to the next pier position by the first hoisting machine and the second hoisting machine on the hoisting mechanism, jacking a rail support leg oil cylinder at the bottom of the rail support leg, and adjusting the walking rail position;
s7, after the walking track conversion is completed, the supporting leg lifting oil cylinder contracts, the walking wheels of the walking mechanism are placed on the walking track, then the walking supporting leg oil cylinder starts to contract, the lower end of the walking supporting leg is far away from the surface of the pier, and the whole lifting mechanism can move on the walking track through the walking mechanism, so that the construction range of the lifting mechanism is increased;
s8, the compensation hoisting method comprises the following steps: before the walking rail moves forwards, a guide rail is arranged at the tail part of the walking rail, a lifting mechanism is used for lifting the guide rail and the front end of the walking rail, the forward moving distance of the walking rail is increased, and after the walking rail is converted and moved, the walking rail is transported to a position outside construction by using a delivery vehicle;
the tail part of the walking track can also be hoisted by a crane, and the walking track can be hoisted to move forward for conversion in cooperation with a second hoister at the front end of the hoisting mechanism.
The invention provides a track adjustable supporting leg for bridge construction and a track conversion method, wherein a jacking platform can separate a platform main body from the water surface, the influence of severe sea conditions is avoided during operation, a crawler crane on the platform can realize high-precision hoisting, but a construction window period still needs to be searched under a displacement working condition, a wharf engineering shoreline is longer, the whole construction displacement times are more, and meanwhile, the supporting leg has a limited length and is difficult to adapt to wharf construction of deep and deep soft stratum.
The problem of the limited station of pier construction is solved, greatly reduced the construction cost that walking track laid, reduced the manual input in scene, improved the efficiency of construction, little to the environmental impact, have good economic benefits.
The type reduces the investment of site labor, has small influence on environment, improves the construction efficiency and has good economic benefit.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a diagram of a guide rail mounting hoist structure of the present invention;
FIG. 2 is a block diagram of the guide rail of the present invention after hoisting;
FIG. 3 is a view showing the construction of the guide rail of the present invention after transportation;
FIG. 4 is a diagram of the structure of the present invention after hoisting a crane;
FIG. 5 is a block diagram of the invention after hoisting of the crane is completed;
FIG. 6 is a side elevational view of the integral leg of the present invention;
FIG. 7 is a front elevational view of the integral leg of the present invention;
FIG. 8 is a walking leg jack-up block diagram of the integral leg of the present invention;
FIG. 9 is a front view of the walking mechanism of the present invention after the lifting operation;
FIG. 10 is a side view of the structure of the walking mechanism of the present invention after the lifting;
FIG. 11 is a view showing the construction of the walking track of the present invention after being lifted away from the pier;
FIG. 12 is a diagram of the installation of the running gear and the jack-up frame of the present invention;
FIG. 13 is a view showing a construction of the running gear and the jack-up frame of the present invention;
FIG. 14 is a block diagram of the mounting locations of the walking bracket and the walking leg of the present invention;
FIG. 15 is a front view of the mounting position of the walking bracket and the walking leg of the present invention;
FIG. 16 is a front view of the installation position of the articulating stringers of the present invention;
FIG. 17 is a block diagram of the track leg and travel track installation of the present invention;
in the figure: a lifting mechanism 1; a first elevator 101; a second hoist 102; a connecting beam 2; a guide rail 3; a walking rail 4; a concave connecting groove 401; a male connector 402; pier 5; a travelling mechanism 6; a carrier vehicle 7; a crane 8; a jack 9; a slide frame 901; a second pin 902; a walking leg 10; pushing the stringer 1001; a fixed connection bar 1002; a walking bracket 11; a first pin 12; a main jack cylinder 13; a docking rack 14; a stabilizing carriage 1401; a leg lifting cylinder 15; a road wheel 16; track legs 17; a threaded drawbar 1701; a walking leg cylinder 18; a track leg cylinder 19; and the longitudinal beam 20 is movably connected.
Detailed Description
Example 1
As shown in fig. 1-17, a track adjustable supporting leg for bridge construction is provided, a lifting mechanism 1 is arranged on a walking track 4 through a plurality of walking mechanisms 6, and the walking track 4 is arranged on a bridge pier 5; lifting mechanism 1 is connected with lifting frame 9, lifting frame 9 and walking support 11 sliding connection, walking support 11 lower extreme is connected with running gear 6, running gear 6 sets up on walking track 4, and walking track 4 sets up on pier 5 through a plurality of track landing legs 17, still is equipped with walking landing leg 10, and walking landing leg 10 upper portion position is connected through a plurality of main lift cylinder 13 with lifting frame 9, and walking landing leg 10 middle part position is connected with walking support 11 through a plurality of landing leg lift cylinder 15.
The method adopts a step-by-step jacking mode, the length of the whole supporting leg is increased, the step-by-step jacking mode is more stable, and the unstable jacking condition caused by too heavy weight is avoided.
The lifting frame 9 is lifted by the main lifting oil cylinder 13 to extend the whole structure, then the travelling mechanism 6 is lifted by the supporting leg lifting oil cylinder 15, the main lifting oil cylinder 13 bears the weight of the travelling mechanism 1, the supporting leg lifting oil cylinder 15 bears the weight of the travelling mechanism 6, the lifting mode is safer, the whole supporting leg is convenient to extend more conveniently, and the step-by-step lifting mode is safer.
After the whole lifting mechanism 1 is supported by the walking support leg 10, the lifting mechanism 1 moves the walking track 4, so that the technical effect of automatic movement of the track system is realized.
In a preferred scheme, the walking support leg 10 comprises four vertically arranged columns, a plurality of fixed connecting rods 1002 are transversely arranged at the lower parts of the four vertical columns, and adjacent fixed connecting rods 1002 are connected through movable connecting stringers 20; simple structure, the weight of support hoist mechanism 1 that can be better.
The lower ends of the four vertical columns are also provided with a walking leg oil cylinder 18. For adjusting the height of the walking leg 10 and supporting the walking leg 10.
In the preferred embodiment, two ends of the movable connecting longitudinal beam 20 are provided with arc-shaped clamping grooves, and the arc-shaped clamping grooves are clamped on the fixed connecting rod 1002. The movable connecting longitudinal beam 20 is convenient to install and disassemble, and a stable structure is added.
In the preferred scheme, sliding frames 901 are arranged on two sides of a jacking frame 9, columns of walking support legs 10 penetrate through the sliding frames 901 and are in sliding connection with the sliding frames 901, movable second pin shafts 902 are further arranged, and the second pin shafts 902 penetrate through the sliding frames 901 and the walking support legs 10 to fix the jacking frame 9 and the walking support legs 10 into a whole; the jacking frame 9 and the walking support legs 10 form a sliding structure, so that the upper parts of the walking support legs 10 are stable according to the requirements.
The lifting frame 9 and the walking bracket 11 are fixed into a whole by the first pin shaft 12, and the first pin shaft 12 penetrates through the lifting frame 9 and the walking bracket 11. The first pin shaft 12 fixes the jacking frame 9 and the walking bracket 11 as a whole.
In the preferred scheme, the travelling mechanism 6 comprises a butt joint frame 14 and travelling wheels 16, the travelling wheels 16 are arranged below the butt joint frame 14, the travelling wheels 16 are driven to rotate by a motor, the upper end of a main jacking cylinder 13 is connected with the middle part of the jacking frame 9, and the lower end of the main jacking cylinder 13 is connected with the butt joint frame 14. The main jacking cylinder 13 jacks up the position of the travelling mechanism 6.
In a preferred embodiment, the plurality of travelling mechanisms 6 are connected through the connecting beam 2, and two ends of the connecting beam 2 are respectively connected with the butt joint frame 14. The connecting beam 2 enhances the stability of the overall running gear 6.
In a preferred scheme, a stable sliding frame 1401 is arranged at two sides of a butt joint frame 14, a walking support leg 10 is a column body penetrating through the stable sliding frame 1401 and is connected with the stable sliding frame 1401 in a sliding mode, a pushing longitudinal beam 1001 is arranged in the middle of the walking support leg 10, one end of a support leg lifting cylinder 15 is connected with the pushing longitudinal beam 1001, and the other end of the support leg lifting cylinder is connected with the stable sliding frame 1401. The docking rack 14 and the walking support leg 10 form a sliding structure, so that the walking support leg 10 is more stable.
In the preferred scheme, the track supporting legs 17 are arranged between two sides of the lower walking supporting leg 10, the track supporting legs 17 comprise a plurality of supporting rods, and the plurality of vertical supporting rods are connected through a plurality of horizontal and diagonal threaded pull rods 1701; the walking leg 10 forms a door-like structure, and the track leg 17 is movable between the two sides of the walking leg 10.
A plurality of track leg oil cylinders 19 are arranged below the vertical supporting rods of the track legs 17. Serving to support and modulate the high end of the track legs 17, the track legs 17 are stable in terms of balance.
In the preferred scheme, walking track 4 includes many short tracks, and short track one end is equipped with concave spread groove 401, and the other end is equipped with the protruding connector 402 of cooperation concave spread groove 401, and many short tracks pass through concave spread groove 401 and protruding connector 402 first concatenation constitution walking track 4, and short track hookup location passes through the screw rod and connects. The butt joint and the installation are convenient.
Example 2
Further described in connection with example 1, as shown in the structures of fig. 1-17, S1, the travel rail 4 moves forward, modulating the travel leg 10 and the travel mechanism 6;
s2, the first pin shaft 12 is pulled out firstly, the jacking frame 9 and the walking support 11 are separated, the main jacking oil cylinder 13 starts to push the jacking frame 9, the walking wheel 16 of the walking mechanism 6 starts to bear force, the whole lifting mechanism 1 is lifted, meanwhile, the walking support leg 10 is lifted away from the bridge pier 5, and the support leg lifting oil cylinder 15 contracts when being lifted along with the walking support leg 10; as shown in the structure of fig. 6-8.
S3, adjusting a walking leg oil cylinder 18 below the walking leg 10, wherein the walking leg oil cylinder 18 is abutted against the surface of the pier 5, the walking leg 10 and the track leg 17 are stressed in a consistent manner, and a second pin shaft 902 keeps the walking leg 10 and the jacking frame 9 in an integral structure; as shown in the structure of fig. 9-10.
S4, the supporting leg lifting oil cylinders 15 start to push the butt joint frames 14 of the walking mechanism 6, the walking mechanism 6 starts to lift away from the walking track 4 through the supporting leg lifting oil cylinders 15, meanwhile, the main lifting oil cylinders 13 also shrink and pull the walking mechanism 6 away from the walking track 4, and meanwhile, the track supporting leg oil cylinders 19 below the walking track 4 start to shrink and descend; as shown in the structure of fig. 9-10.
S5, inserting a first pin shaft 12 into positions of the control jacking frame 9 and the walking bracket 11, wherein: the walking bracket 11 is provided with a plurality of pin holes to stabilize the jacking frame 9 and the walking bracket 11;
s6, respectively hoisting two ends of a walking rail 4 by a first hoisting machine 101 and a second hoisting machine 102 of the hoisting mechanism 1, hoisting the walking rail 4 away from the surface of a pier 5, dismantling a movable connection longitudinal beam 20 below a walking support leg 10, moving the first hoisting machine 101 and the second hoisting machine 102 on the hoisting mechanism 1 in advance, moving a rail support leg 17 at the forefront of the walking rail 4 to the position of the next pier 5, lifting a rail support leg oil cylinder 19 at the bottom of the rail support leg 17, and adjusting the position of the walking rail 4;
s7, after the conversion of the walking track 4 is completed, the supporting leg lifting cylinder 15 is contracted, the walking wheel 16 of the walking mechanism 6 is placed on the walking track 4, then the walking leg cylinder 18 starts to contract, the lower end of the walking leg 10 is far away from the surface of the pier 5, and the whole lifting mechanism 1 can move on the walking track 4 through the walking mechanism 6, so that the construction range of the lifting mechanism 1 is increased;
s8, the compensation hoisting method comprises the following steps: before the traveling rail 4 moves forwards, the guide rail 3 is arranged at the tail part of the traveling rail 4, the lifting mechanism 1 hoists the front ends of the guide rail 3 and the traveling rail 4, the forward moving distance of the traveling rail 4 is increased, and after the traveling rail 4 is converted and moved, the traveling rail 4 is transported to a position outside construction by using the delivery vehicle 7; when the walking track 4 is too short, a lifting mode can be adopted by installing the guide track 3. As shown in the structure of fig. 1-5.
The tail of the walking rail 4 can also be hoisted by adopting a crane 8, and the walking rail 4 can be hoisted to move forward for conversion in cooperation with a second hoister 102 at the front end of the hoisting mechanism 1. As shown in the structure of fig. 1-5. Under the condition that the tail of the lifting mechanism 1 is loaded, the tail hoisting travelling rail 4 is hoisted again, and the lifting mechanism is hoisted and installed by adopting a crane 8.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.

Claims (10)

1. A track adjustable landing leg for bridge construction, characterized by: the lifting mechanism (1) is arranged on the walking track (4) through a plurality of walking mechanisms (6), and the walking track (4) is arranged on the bridge pier (5);
lifting mechanism (1) is connected with jacking frame (9), jacking frame (9) and walking support (11) sliding connection, walking support (11) lower extreme is connected with running gear (6), running gear (6) set up on walking track (4), walking track (4) set up on pier (5) through a plurality of track landing legs (17), still be equipped with walking landing leg (10), walking landing leg (10) upper portion position is connected through a plurality of main jacking hydro-cylinders (13) with jacking frame (9), walking landing leg (10) middle part position is connected with walking support (11) through a plurality of landing leg lifting cylinder (15).
2. The adjustable rail leg for bridge construction of claim 1, wherein: the walking support leg (10) comprises four vertically arranged columns, a plurality of fixed connecting rods (1002) are transversely arranged at the lower parts of the four vertical columns, and the adjacent fixed connecting rods (1002) are connected through movable connecting stringers (20);
the lower ends of the four vertical columns are also provided with walking leg cylinders (18).
3. The adjustable rail support leg for bridge construction of claim 2, wherein: arc clamping grooves are formed in two ends of the movable connecting longitudinal beam (20), and the arc clamping grooves are clamped on the fixed connecting rod (1002).
4. The adjustable rail leg for bridge construction of claim 1, wherein: the two sides of the jacking frame (9) are provided with sliding frames (901), the columns of the walking support legs (10) penetrate through the sliding frames (901) and are in sliding connection with the sliding frames (901), the movable second pin shafts (902) are further arranged, and the second pin shafts (902) penetrate through the sliding frames (901) and the walking support legs (10) to fix the jacking frame (9) and the walking support legs (10) into a whole;
the lifting frame is also provided with a first pin shaft (12), and the first pin shaft (12) penetrates through the lifting frame (9) and the walking bracket (11) to fix the lifting frame (9) and the walking bracket (11) into a whole.
5. The adjustable rail leg for bridge construction of claim 1, wherein: the traveling mechanism (6) comprises a butt joint frame (14) and traveling wheels (16), the traveling wheels (16) are arranged below the butt joint frame (14), the traveling wheels (16) are driven to rotate through a motor, the upper end of a main jacking cylinder (13) is connected with the middle of the jacking frame (9), and the lower end of the main jacking cylinder (13) is connected with the butt joint frame (14).
6. The adjustable rail support leg for bridge construction according to claim 5, wherein: the plurality of travelling mechanisms (6) are connected through the connecting beam (2), and two ends of the connecting beam (2) are respectively connected with the butt joint frame (14).
7. The adjustable rail support leg for bridge construction according to claim 5, wherein: the two sides of the butt joint frame (14) are provided with a stable sliding frame (1401), the walking support leg (10) is a cylinder body penetrating through the stable sliding frame (1401) and is in sliding connection with the stable sliding frame (1401), the middle part of the walking support leg (10) is provided with a pushing longitudinal beam (1001) which is connected, one end of a support leg lifting cylinder (15) is connected with the pushing longitudinal beam (1001), and the other end of the support leg lifting cylinder is connected with the stable sliding frame (1401).
8. The adjustable rail leg for bridge construction of claim 1, wherein: the track supporting legs (17) are arranged between two sides of the lower walking supporting leg (10), the track supporting legs (17) comprise a plurality of supporting rods, and the plurality of vertical supporting rods are connected through a plurality of horizontal and diagonal threaded pull rods (1701);
a plurality of track supporting leg oil cylinders (19) are arranged below the vertical supporting rods of the track supporting legs (17).
9. The adjustable rail leg for bridge construction of claim 1, wherein: the walking track (4) comprises a plurality of short tracks, one end of each short track is provided with a concave connecting groove (401), the other end of each short track is provided with a convex connector (402) matched with the concave connecting groove (401), the plurality of short tracks are spliced at first positions through the concave connecting grooves (401) and the convex connectors (402) to form the walking track (4), and the connecting positions of the short tracks are connected through screws.
10. A rail conversion method of a rail adjustable leg for bridge construction according to any one of claims 1 to 9, characterized by: the method comprises the following steps:
s1, a walking rail (4) moves forwards to modulate a walking support leg (10) and a walking mechanism (6);
s2, the first pin shaft (12) is pulled out firstly, the jacking frame (9) and the walking support (11) are separated, the main jacking oil cylinder (13) starts to push the jacking frame (9), the walking wheel (16) of the walking mechanism (6) starts to bear force, the whole lifting mechanism (1) is lifted, meanwhile, the walking support leg (10) is lifted away from the bridge pier (5), and the support leg lifting oil cylinder (15) contracts when being lifted along with the walking support leg (10);
s3, adjusting a walking leg oil cylinder (18) below the walking leg (10), wherein the walking leg oil cylinder (18) is abutted against the surface of the pier (5), the walking leg (10) and the track leg (17) are stressed uniformly, and the second pin shaft (902) keeps the walking leg (10) and the jacking frame (9) in an integral structure;
s4, the supporting leg lifting oil cylinder (15) starts to push the butt joint frame (14) of the travelling mechanism (6), the travelling mechanism (6) starts to lift away from the travelling rail (4) through the supporting leg lifting oil cylinder (15), meanwhile, the main lifting oil cylinder (13) also contracts to pull the travelling mechanism (6) away from the travelling rail (4), and meanwhile, the rail supporting leg oil cylinder (19) below the travelling rail (4) starts to contract and descend;
s5, inserting a first pin shaft (12) into positions of the control jacking frame (9) and the walking bracket (11), wherein: the walking bracket (11) is provided with a plurality of pin holes, so that the jacking frame (9) and the walking bracket (11) are stabilized;
s6, a first lifter (101) and a second lifter (102) of the lifting mechanism (1) respectively lift two ends of a walking rail (4), the walking rail (4) is lifted away from the surface of a pier (5), a movable connecting longitudinal beam (20) below a walking support leg (10) is detached, the first lifter (101) and the second lifter (102) move on the lifting mechanism (1) previously, a rail support leg (17) at the forefront of the walking rail (4) moves to the position of the next pier (5), a rail support leg oil cylinder (19) at the bottom of the rail support leg (17) is lifted, and the position of the walking rail (4) is adjusted;
s7, after the conversion of the walking track (4) is completed, the supporting leg lifting oil cylinder (15) is contracted, the walking wheel (16) of the walking mechanism (6) is placed on the walking track (4), then the walking leg oil cylinder (18) starts to contract, the lower end of the walking leg (10) is far away from the surface of the pier (5), and the whole lifting mechanism (1) can move on the walking track (4) through the walking mechanism (6), so that the construction range of the lifting mechanism (1) is increased;
s8, the compensation hoisting method comprises the following steps: before the walking rail (4) moves forwards, a guide rail (3) is arranged at the tail part of the walking rail (4), the lifting mechanism (1) hoists the front ends of the guide rail (3) and the walking rail (4), the forward moving distance of the walking rail (4) is increased, and after the walking rail (4) is converted and moved, the walking rail is transported to a position outside construction by using a delivery vehicle (7);
the tail part of the walking track (4) can be hoisted by adopting a crane (8), and the walking track (4) can be hoisted to move forwards in cooperation with a second hoister (102) at the front end of the hoisting mechanism (1).
CN202311530627.3A 2023-11-16 2023-11-16 Track adjustable supporting leg for bridge construction and track conversion method Pending CN117845749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311530627.3A CN117845749A (en) 2023-11-16 2023-11-16 Track adjustable supporting leg for bridge construction and track conversion method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311530627.3A CN117845749A (en) 2023-11-16 2023-11-16 Track adjustable supporting leg for bridge construction and track conversion method

Publications (1)

Publication Number Publication Date
CN117845749A true CN117845749A (en) 2024-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311530627.3A Pending CN117845749A (en) 2023-11-16 2023-11-16 Track adjustable supporting leg for bridge construction and track conversion method

Country Status (1)

Country Link
CN (1) CN117845749A (en)

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