CN112356759A - Low-position girder transporting vehicle - Google Patents
Low-position girder transporting vehicle Download PDFInfo
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- CN112356759A CN112356759A CN202011310451.7A CN202011310451A CN112356759A CN 112356759 A CN112356759 A CN 112356759A CN 202011310451 A CN202011310451 A CN 202011310451A CN 112356759 A CN112356759 A CN 112356759A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
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- 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
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Abstract
The invention provides a low-position beam transporting vehicle, wherein the lower part of the inner side wall between two main beams is provided with walking steps with a step-shaped structure, a rear beam carrying trolley comprises a rear trolley cross beam, walking beams, a connecting beam and a bearing beam, the two walking beams are respectively fixed at the left end and the right end of the rear trolley cross beam, the bottoms of the walking beams are positioned on the walking steps, and the front end and the rear end of each walking beam are connected with a rear traction system; the bearing beam is arranged towards the front end of the frame along the horizontal direction and is fixed below the rear trolley beam through the connecting beam. The front beam carrying trolley and the rear beam carrying trolley in the low-position beam transporting vehicle respectively move longitudinally at different heights along different tracks, and the traction systems adopted by the front beam carrying trolley and the rear beam carrying trolley are also arranged at different heights on the vehicle frame, so that the bearing height of the bearing box beam can be effectively reduced, the tunnel can be easily crossed, the longitudinal movement range of the rear beam carrying trolley is expanded, and the rear beam carrying trolley is more flexible in the working processes of beam transporting and beam feeding.
Description
Technical Field
The invention belongs to the technical field of bridge construction machinery and methods, and particularly relates to a low-position girder transporting vehicle suitable for transporting different box girders.
Background
The beam transporting vehicles in use at present mainly comprise two types: however, the tunnel type beam transporting vehicle and the cross-tunnel type beam transporting vehicle are also called a high-position beam transporting vehicle and a low-position beam transporting vehicle. The two girder transporting vehicles have basically the same structure: all adopt a frame girder to put in, the vertical equipartition tire group in girder both sides, full hydraulic drive. The difference lies in that: the high-position girder transporting vehicle usually adopts large-specification tires, the number of bearing shafts can be reduced under the condition of satisfying the girder transporting, but the height of the girder transporting is high, and the box girder is difficult to transport through the tunnel. The low-position beam transporting vehicle usually adopts a multi-axis double-tire juxtaposition small tire mode. Under the condition of underfilling of a backfill layer of the tunnel, the box girder and the bridge girder erection machine can be carried through the tunnel.
At present, the transportation of high-speed rail concrete box girders mostly adopts a small-tire girder transporting vehicle, and the problems that the girder transporting is difficult to pass through the tunnel and the bridge girder erection machine is difficult to pass through the tunnel still exist. The applicant has announced a utility model patent named as a low level fortune roof beam car in 2019, 3 month 15, patent number ZL 201821072202.7, the low level fortune roof beam car that provides in this patent is high low, does not do any special requirement to the tunnel section and can transport the roof beam and pass through the tunnel, can pack the bridge girder erection machine and cross the tunnel, has reduced the post-processing on tunnel backfill layer, has improved high-speed railway construction progress and quality.
However, the applicant finds that the product still has the optimization and improvement space during the use process: because the front girder-carrying trolley and the rear girder-carrying trolley adopt the same structure, move on the same track and are dragged by the same traction system, the longitudinal positions of the front girder-carrying trolley and the rear girder-carrying trolley along the direction of the main girder are in conflict, and the installation positions of the traction systems corresponding to the front girder-carrying trolley and the rear girder-carrying trolley on the frame are in conflict, so that the front girder-carrying trolley can only move on the front section of the frame, the rear girder-carrying trolley can only move on the rear section of the frame, and the movable ranges of the front girder-carrying trolley and the rear girder-carrying trolley have a boundary. Generally, in the process of feeding beams by a bridge girder erection machine, the moving distance of a front beam-carrying trolley is short, but the moving distance of a rear beam-carrying trolley is long, the rear beam-carrying trolley needs to be matched with a front crane trolley of the bridge girder erection machine to send a box beam to a beam-taking position of the rear crane trolley together, namely the rear beam-carrying trolley needs to move forwards as far as possible (to obtain a larger moving range), but the rear beam-carrying trolley cannot move forwards too much due to the obstruction of traction systems of the front beam-carrying trolley and the front beam-carrying trolley, so that inconvenience is brought to the using process.
Disclosure of Invention
The invention provides a low-position beam transporting vehicle, which solves the defects in the prior art, and is characterized in that the low-position beam transporting vehicle is improved aiming at the structure and the traction mode of a rear beam carrying trolley and the structure of a main beam, so that the front beam carrying trolley and the rear beam carrying trolley respectively move longitudinally at different heights along different tracks, and traction systems adopted by the front beam carrying trolley and the rear beam carrying trolley are also arranged at different heights on a vehicle frame.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
a low-position girder transporting vehicle at least comprises a frame, telescopic support legs, a box girder jacking oil cylinder, a suspension walking assembly, a steering oil cylinder, a driver cab, an electrical system and a hydraulic system, as well as a front girder-carrying trolley positioned on the front section of the frame, a rear girder-carrying trolley positioned on the rear section of the frame, a front traction system used for driving the front girder-carrying trolley and a rear traction system used for driving the rear girder-carrying trolley, wherein the cross section of the frame is of a U-shaped structure and comprises two main girders and cross girders distributed between the two main girders, and two ends of each cross girder are respectively connected and fixed below the two main girders;
the front section of the frame is provided with two longitudinal beams parallel to the main beam, the two longitudinal beams and the cross beam at the front section of the frame are connected with each other to form a grid structure, the upper top surfaces of the two longitudinal beams are provided with tracks, and the front beam carrying trolley is mounted on the tracks and moves along the tracks under the driving of a front traction system; the rear girder-carrying trolley comprises a rear trolley cross beam, two walking beams and a bearing bracket, wherein the two walking beams are arranged along the direction of the main beams, the two walking beams are respectively fixed at the left end and the right end of the rear trolley cross beam, the bottom of each walking beam is positioned on the walking steps and can move along the walking steps, the bearing bracket is provided with more than one group, the bearing bracket comprises a connecting beam and a bearing beam, the bearing beam is arranged towards the front end of the frame along the horizontal direction, the bearing beam is fixed below the rear trolley cross beam through the connecting beam, the height of the bearing beam is lower than the track surface of the walking steps and higher than that of the cross beam in the frame, and a bearing area for bearing the box girder is arranged in the upper top surface of the bearing beam; the front end and the rear end of each walking beam are connected with a rear traction system, the rear traction systems are provided with two groups, the two groups of rear traction systems are respectively driven correspondingly to the two walking beams, each rear traction system at least comprises a driving motor, a chain wheel and a traction chain, the driving motors and the chain wheels are fixedly installed on the walking beams, two ends of the traction chains are respectively fixed at the front end and the rear end of each walking step on the main beam, and the driving motors drive the chain wheels to rotate, so that the walking beams are further driven to move along the traction chains and the walking steps.
The rear traction system comprises a driving motor, a traction chain, a front lug plate, a rear lug plate, a driving chain wheel, a driven chain wheel, a front fixed chain seat and a rear fixed chain seat, two ends of the traction chain are respectively fixedly connected with the front fixed chain seat and the rear fixed chain seat, the front fixed chain seat and the rear fixed chain seat are respectively fixed at the front end and the rear end of a walking step, the front lug plate and the rear lug plate are respectively connected at the front end and the rear end of a walking beam, the rear lug plate is internally provided with the driving chain wheel and the driven chain wheel which are distributed up and down, the front lug plate is internally provided with the two driven chain wheels which are distributed up and down, an output shaft of the driving motor is connected with the driving chain wheel and drives the driving chain wheel to rotate, the traction chain sequentially penetrates out of the rear lug plate and the front lug plate and is wound into an omega shape together with.
Adjusting rods capable of adjusting the tensioning degree of the traction chain are arranged in the front fixed chain seat and the rear fixed chain seat.
The bottom of the walking beam is fixed with a sliding plate made of engineering plastic alloy and capable of sliding on the walking steps, and pulleys/sliding rails are arranged on the walking steps correspondingly.
And a rubber cushion block is arranged in a bearing area on the bearing beam.
And guide devices are arranged below the left end and the right end of the rear trolley beam, and the distance between each guide device and the side surface of the walking step is 5-15 mm.
Compared with the prior art, the low-position girder transporting vehicle provided by the invention has the following advantages: 1. in the invention, the lower part of the inner side wall between the two main beams is provided with a walking step, then the rear beam-carrying trolley is arranged on the walking step, and the front beam-carrying trolley is still arranged on the lower longitudinal beam, so that the two trolleys respectively have own track and do not share the same track. In addition, the structure of a traction system of the front girder-carrying trolley is kept unchanged and is arranged below the longitudinal beam; the traction system of the rear beam-carrying trolley is changed to be arranged on a walking step, so that the traction systems of the rear beam-carrying trolley and the walking step are respectively positioned on different height planes, and the whole traction chain of the rear beam-carrying trolley is arranged along the main beam, thereby endowing the rear beam-carrying trolley with the capability of widely moving along the main beam of the frame and providing a space for the rear beam-carrying trolley to widely move. 2. The utility model discloses in owing to carry the novel structure of roof beam dolly behind, can effectively reduce the bearing height of bearing case roof beam, hang under the condition that the height reduces, easily transport the roof beam and cross the tunnel. 3. In the invention, because the rear beam-carrying trolley does not need to move on the lower longitudinal beam and only the front beam-carrying trolley needs to move on the lower longitudinal beam in a small range, the length of the lower longitudinal beam can be greatly shortened and the welding area between the lower longitudinal beam and the cross beam is greatly reduced, thereby simplifying the product structure and further reducing the cost.
Drawings
Fig. 1 is a schematic overall structure diagram of a rear beam-carrying trolley used in a beam-transporting vehicle passing through a tunnel;
FIG. 2 is a longitudinal side view of FIG. 1;
FIG. 3 is a longitudinal side view of the frame structure;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a lateral side view of FIG. 3;
FIG. 6 is a schematic structural view of a rear girder-carrying trolley and a rear traction system;
FIG. 7 is a top view of a piggyback trolley;
FIG. 8 is a longitudinal side view of a piggyback trolley;
FIG. 9 is a schematic view of the structure of the slide plate;
FIG. 10 is a top view of the rear traction system configuration;
FIG. 11 is a schematic structural view of a front girder-carrying trolley and a front traction system;
FIG. 12 is a longitudinal side view of a piggyback trolley;
FIG. 13 is a schematic diagram showing the relative positions of a front girder-carrying trolley and a box girder under a tunnel-passing condition;
FIG. 14 is a schematic diagram of the relative positions of a rear beam-carrying trolley and a box beam under a tunnel-passing condition;
FIG. 15 is a schematic diagram of the relative positions of a front beam-carrying trolley and a box beam under a beam feeding condition;
FIG. 16 is a schematic diagram of the relative positions of a rear beam-carrying trolley and a box beam under the working condition of beam feeding;
in the figure: 1 frame, 2-telescopic supporting legs, 3-box girder jacking oil cylinders, 4-suspension traveling assemblies, 5-cab, 6-front girder-carrying trolley, 7-rear girder-carrying trolley, 8-front traction system, 9-rear traction system, 101-main girder, 102-cross beam, 103-traveling step, 104-longitudinal girder, 701-rear trolley cross beam, 702-traveling beam, 703-connecting beam, 704-bearing beam, 705-sliding plate, 706-rubber cushion block, 707-guiding device, 901-driving motor, 902-traction chain, 903-front lug plate, 904-rear lug plate, 905-driving chain wheel, 906-driven chain wheel, 907-front fixed chain seat, 908-rear fixed chain seat and 909-adjusting rod.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the scope of the present invention is not limited to the following embodiments.
The overall structure of the low-position beam transporting vehicle provided by the invention is shown in fig. 1 and fig. 2, and the low-position beam transporting vehicle comprises a frame 1, a telescopic supporting leg 2, a box girder jacking oil cylinder 3, a suspension walking assembly 4, a steering oil cylinder, a cab 5, an electric system and a hydraulic system which are arranged on the frame, a front beam carrying trolley 6 positioned at the front section of the frame, a rear beam carrying trolley 7 positioned at the rear section of the frame, a front traction system 8 for driving the front beam carrying trolley and a rear traction system 9 for driving the rear beam carrying trolley. The telescopic supporting legs, the box girder jacking oil cylinder, the suspension walking assembly, the steering oil cylinder, the cab, the electric system and the hydraulic system, as well as the front girder-carrying trolley and the front traction system in the components are all conventional components, so the structure of the components is not described in detail in the patent.
The structure of the frame is shown in fig. 3, 4 and 5, the cross section of the frame is a U-shaped structure, the frame comprises two main beams 101 and cross beams 102 distributed between the two main beams, two ends of each cross beam are respectively connected and fixed below the two main beams, the lower part of the inner side wall between the two main beams is provided with a walking step 103 with a step-shaped structure, the front section of the frame is provided with two longitudinal beams 104 parallel to the main beams, the two longitudinal beams and the cross beams at the front section of the frame are connected with each other to form a grid structure, the upper top surfaces of the two longitudinal beams are provided with tracks, and a front girder-carrying trolley is mounted on the tracks and moves along the tracks under the driving of a. The structures of the front pack beam trolley and the front traction system are shown in figures 11 and 12.
The structure of the rear beam-carrying trolley is shown in fig. 6, 7 and 8, and comprises a walking frame and a support bracket, wherein the walking frame comprises a rear trolley cross beam 701 and a walking beam 702, the walking beams are provided with two walking beams which are arranged along the direction of a main beam, the two walking beams are respectively fixed at the left end and the right end of the rear trolley cross beam, the bottom of the walking beam is positioned on a walking step and can move along the walking step, and the front end and the rear end of the walking beam are connected with a rear traction system; the bearing bracket is provided with more than a set of, and the bearing bracket includes tie-beam 703 and bearing beam 704, and the bearing beam sets up towards the frame front end along the horizontal direction, and the bearing beam is fixed in the below of back dolly crossbeam through the tie-beam, and the height of bearing beam is less than walk the height of walking step track face and being higher than crossbeam in the frame, is provided with the bearing region who is used for bearing the case roof beam in the last top surface of bearing beam, rubber cushion block 706 is installed in the bearing region on the bearing beam. A sliding plate 705 made of engineering plastic alloy and capable of sliding on the walking steps is fixed at the bottom of the walking beam, the structure of the sliding plate is shown in fig. 9, and pulleys/sliding rails are correspondingly arranged on the walking steps. Two guide devices 707 are fixed below the left end and the right end of the rear trolley beam, and the distance between each guide device and the side face of the walking step is 5-15 mm.
The structure of the rear traction system is as shown in fig. 6 and 10, the rear traction system is provided with two groups, the two groups of rear traction systems are respectively driven by two walking beams correspondingly, the rear traction system at least comprises a driving motor 901, a chain wheel and a traction chain 902, the driving motor and the chain wheel are fixedly installed on the walking beams, two ends of the traction chain are respectively fixed at the front end and the rear end of the walking step on the main beam, and the driving motor drives the chain wheel to rotate, so that the walking beams are further driven to move along the traction chain and the walking step. Further, the rear traction system comprises a driving motor, a traction chain, a front lug plate 903, a rear lug plate 904, a driving sprocket 905, a driven sprocket 906, a front fixed chain seat 907 and a rear fixed chain seat 908, wherein two ends of the traction chain are respectively fixedly connected with the front fixed chain seat and the rear fixed chain seat, the front fixed chain seat and the rear fixed chain seat are respectively fixed at the front end and the rear end of the walking step, the front lug plate and the rear lug plate are respectively connected at the front end and the rear end of the walking beam, the rear lug plate is internally provided with the driving sprocket and the driven sprocket which are vertically distributed, the front lug plate is internally provided with the two driven sprockets which are vertically distributed, an output shaft of the driving motor is connected with the driving sprocket and drives the driving sprocket to rotate, and the traction chain sequentially penetrates out of the rear lug plate and the front lug plate and is wound into an omega shape together with the sprockets in the rear lug plate and the front lug plate. An adjusting rod 909 capable of adjusting the tensioning degree of the traction chain is arranged in each of the front fixed chain seat and the rear fixed chain seat.
The working process of the low-position girder transporting vehicle provided by the invention is as follows: firstly, placing box girders on a girder transporting vehicle body in a girder yard, and directly hoisting and placing the box girders on a front girder carrying trolley and a rear girder carrying trolley if the box girders do not need to pass through a tunnel when being transported to a bridge girder erection machine, wherein high-position girder transporting is adopted; if the vehicle needs to pass through the tunnel, the front girder-carrying trolley and the rear girder-carrying trolley need to be respectively pulled to the end parts of the vehicle frame, and then the box girder is hoisted and placed on the vehicle frame (as shown in fig. 13 and 14) so as to reduce the overall height and facilitate the transportation through the tunnel. When the girder transporting vehicle transports the girder to the girder feeding position of the bridge girder erection machine, the telescopic supporting legs of the girder transporting vehicle extend and support on the road surface, and the cab rotates by 90 degrees to allow the box girder to pass through.
And secondly, the box girder jacking oil cylinder jacks the box girder, and the front traction system and the rear traction system respectively drive the front girder-carrying trolley and the rear girder-carrying trolley to drive into the bottom of the box girder (as shown in figures 15 and 16), and then the box girder jacking oil cylinder retracts. It should be noted that if the high-position transportation beam is adopted in the first step, the step can be directly omitted.
And thirdly, the front traction system and the rear traction system respectively drive the front beam-carrying trolley and the rear beam-carrying trolley to carry beams forward for a short distance, so that the box beam reaches the beam taking position of the front crane trolley of the bridge girder erection machine.
And fourthly, the lifting appliance of the front trolley of the bridge girder erection machine falls to take the beam, the front trolley and the rear beam carrying trolley are controlled by an electrical system to synchronously move the beam feeding forwards (the rear beam carrying trolley moves forwards for a long distance independently under the drive of a rear traction system) until the box beam reaches the beam taking position of the rear trolley of the bridge girder erection machine. In the invention, firstly, a walking step is arranged at the lower part of the inner side wall between two main beams, and then a rear beam-carrying trolley is arranged on the walking step and does not share the same track with a front beam-carrying trolley. And the traction system of the rear beam-carrying trolley is changed to be arranged on a walking step, so that the traction system and the front traction system are respectively positioned on different height planes, and the traction chain of the rear beam-carrying trolley can be integrally arranged along the main beam, thereby endowing the rear beam-carrying trolley with the capability of widely moving along the main beam of the frame on one hand, and providing a space for the rear beam-carrying trolley to widely move on the other hand. Finally, the operation of the rear beam-carrying trolley in the step is more convenient and flexible, and the moving distance is longer.
Fifthly, after the box girder reaches the position where the trolley is taken out after the bridge girder erection machine, the trolley lifting appliance falls to take out the girder after the bridge girder erection machine, the box girder leaves the girder transporting vehicle, the telescopic supporting legs of the girder transporting vehicle are retracted at the moment, the cab rotates in the reverse direction by 90 degrees, the girder transporting vehicle returns to the girder yard to load the girder, and the next construction cycle is carried out.
Claims (6)
1. The utility model provides a low level fortune roof beam car, includes the frame at least and installs the flexible landing leg on the frame, case roof beam jacking cylinder, hangs and walks assembly, steering cylinder, cab, electrical system and hydraulic system, and the preceding roof beam dolly that carries on the back that is located the frame anterior segment, the back that is located the frame back segment carries the roof beam dolly, is used for driving the preceding traction system who carries the roof beam dolly and is used for driving the back traction system who carries the roof beam dolly that carries on the back that carries the roof beam dolly before carrying on the back, the cross-section of frame is U type structure, includes two girders and the crossbeam that distributes between two girders, and the both ends of crossbeam are connected respectively and are fixed in the below of two girders, its characterized in that:
the front section of the frame is provided with two longitudinal beams parallel to the main beam, the two longitudinal beams and the cross beam at the front section of the frame are connected with each other to form a grid structure, the upper top surfaces of the two longitudinal beams are provided with tracks, and the front beam carrying trolley is mounted on the tracks and moves along the tracks under the driving of a front traction system; the rear girder-carrying trolley comprises a rear trolley cross beam, two walking beams and a bearing bracket, wherein the two walking beams are arranged along the direction of the main beams, the two walking beams are respectively fixed at the left end and the right end of the rear trolley cross beam, the bottom of each walking beam is positioned on the walking steps and can move along the walking steps, the bearing bracket is provided with more than one group, the bearing bracket comprises a connecting beam and a bearing beam, the bearing beam is arranged towards the front end of the frame along the horizontal direction, the bearing beam is fixed below the rear trolley cross beam through the connecting beam and is lower than the track surface of the walking steps and higher than the height of the cross beam in the frame, and a bearing area for bearing a box girder is arranged in the upper top surface of the bearing beam; the front end and the rear end of each walking beam are connected with a rear traction system, the rear traction systems are provided with two groups, the two groups of rear traction systems are respectively driven correspondingly to the two walking beams, each rear traction system at least comprises a driving motor, a chain wheel and a traction chain, the driving motors and the chain wheels are fixedly installed on the walking beams, two ends of the traction chains are respectively fixed at the front end and the rear end of each walking step on the main beam, and the driving motors drive the chain wheels to rotate, so that the walking beams are further driven to move along the traction chains and the walking steps.
2. The low level fortune roof beam car of claim 1, characterized by: the rear traction system comprises a driving motor, a traction chain, a front lug plate, a rear lug plate, a driving chain wheel, a driven chain wheel, a front fixed chain seat and a rear fixed chain seat, two ends of the traction chain are respectively fixedly connected with the front fixed chain seat and the rear fixed chain seat, the front fixed chain seat and the rear fixed chain seat are respectively fixed at the front end and the rear end of a walking step, the front lug plate and the rear lug plate are respectively connected at the front end and the rear end of a walking beam, the rear lug plate is internally provided with the driving chain wheel and the driven chain wheel which are distributed up and down, the front lug plate is internally provided with the two driven chain wheels which are distributed up and down, an output shaft of the driving motor is connected with the driving chain wheel and drives the driving chain wheel to rotate, the traction chain sequentially penetrates out of the rear lug plate and the front lug plate and is wound into an omega shape together with.
3. The low beam transport vehicle of claim 2, wherein: adjusting rods capable of adjusting the tensioning degree of the traction chain are arranged in the front fixed chain seat and the rear fixed chain seat.
4. The low beam transport vehicle of claim 1, wherein: the bottom of the walking beam is fixed with a sliding plate made of engineering plastic alloy and capable of sliding on the walking steps, and pulleys/sliding rails are arranged on the walking steps correspondingly.
5. The low beam transport vehicle of claim 1, wherein: and a rubber cushion block is arranged in a bearing area on the bearing beam.
6. The low beam transport vehicle of claim 1, wherein: and guide devices are arranged below the left end and the right end of the rear trolley beam, and the distance between each guide device and the side surface of the walking step is 5-15 mm.
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| CN202011310451.7A CN112356759B (en) | 2020-11-20 | 2020-11-20 | Low-position girder transporting vehicle |
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| CN202011310451.7A CN112356759B (en) | 2020-11-20 | 2020-11-20 | Low-position girder transporting vehicle |
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| CN112356759B CN112356759B (en) | 2021-09-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411572A (en) * | 2021-12-31 | 2022-04-29 | 中铁十四局集团青岛工程有限公司 | Novel precast box girder beam mounting operation method |
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| CN114411572A (en) * | 2021-12-31 | 2022-04-29 | 中铁十四局集团青岛工程有限公司 | Novel precast box girder beam mounting operation method |
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