CN111074792A - Large-span bridge fabrication machine and sliding device thereof - Google Patents
Large-span bridge fabrication machine and sliding device thereof Download PDFInfo
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- CN111074792A CN111074792A CN202010005124.4A CN202010005124A CN111074792A CN 111074792 A CN111074792 A CN 111074792A CN 202010005124 A CN202010005124 A CN 202010005124A CN 111074792 A CN111074792 A CN 111074792A
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- fabrication machine
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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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 relates to the field of bridge erection, and provides a large-span bridge fabrication machine and a sliding device thereof. The sliding device comprises a transverse moving pad seat and auxiliary supporting equipment, wherein a driving device is arranged on a supporting leg, the moving direction of the transverse moving pad seat is matched with the length direction of the supporting leg, the auxiliary supporting equipment comprises a frame body and a roller, and a clamping piece is arranged on the frame body. The large-span bridge fabrication machine comprises a bridge fabrication machine body, a sliding device and a plurality of supporting legs. During the use of this application, drive the sideslip base through drive arrangement and remove, and then drive the bridging machine sideslip, moreover, the steam generator is simple in structure, high durability and convenient operation, convert sliding friction into rolling friction through setting up auxiliary stay equipment, reduce the frictional force of contact position, make the bridging machine follow sideslip base and frame body synchronous motion through setting up joint spare, increase the accuracy of bridging machine location, and gyro wheel and joint spare restrict the bridging machine along sideslip base length direction's degree of freedom simultaneously, reduce the atress of joint spare, increase its life.
Description
Technical Field
The invention relates to the field of bridge erection, in particular to a large-span bridge fabrication machine and a sliding device thereof.
Background
With the rapid development of the construction industry of the Chinese passenger dedicated line (high-speed) railway, the technology of prefabricating, assembling and pre-stressing simply-supported box girders for large-span segments is widely applied to railway construction. Wherein, the segment assembling bridge fabrication machine is the main equipment for realizing the technology. And the rear supporting leg of the bridge fabrication machine is lifted before the through hole is formed, and the rear supporting leg is moved to the position of the end section of the formed beam through the hoisting trolley. The middle supporting leg is lifted up and then moved to the position of the bridge pier base stone through another hoisting trolley. When the bridge fabrication machine passes through the hole, the middle supporting leg is supported on the bridge pier cushion stone, the rear supporting leg is supported on the end section of the formed beam, and meanwhile, the front supporting leg is lifted. The rail is laid to the girder segment that has become, and the back fulcrum dolly of bridging machine supports on the rail, is equipped with power device on the back fulcrum dolly, and the back fulcrum dolly that promotes through power device removes along the rail, and then makes bridging machine slide forward for well landing leg and back landing leg, accomplishes bridging machine's via hole, and the operation is convenient, and the via hole is efficient.
However, the larger the plane curvature and the pier span distance of the segment prefabricated and assembled prestressed simply-supported box girder are, the longer the geometric dimension of the mobile bracket bridge fabrication machine is, and the larger the offset of the supporting points of the front, middle and rear supporting legs on the small plane curve and the central line of the frame girder are, so that the offset of the mobile bracket bridge fabrication machine in front of the through hole is of great importance.
In the prior art, the common offset mode of a bridge and a bridge fabrication machine is adopted for adjustment, the offset process is complex, and the construction efficiency is low. Meanwhile, when the bridge fabrication machine passes through the hole, the bridge fabrication machine needs to overcome the friction force to move forwards, increase the driving force of the power device and accelerate the loss of the contact position. Therefore, a girder construction scheme is urgently needed, so that the requirement of a large-span bridge fabrication machine for erecting a small-radius curve bridge can be met, the friction force in the hole passing process can be reduced, and the service life of each part is prolonged.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the invention provides a large-span bridge fabrication machine and a sliding device thereof.
The sliding device of the large-span bridge fabrication machine comprises a transverse moving pad seat arranged at the top of a support leg of the bridge fabrication machine in a sliding mode and at least one auxiliary supporting device arranged at the top of the transverse moving pad seat, wherein a driving device used for driving the transverse moving pad seat to move is arranged on the support leg, the moving direction of the transverse moving pad seat is matched with the length direction of the support leg, the auxiliary supporting device comprises a frame body arranged at the top of the transverse moving pad seat and a plurality of groups of rollers which roll synchronously along the length direction of the bridge fabrication machine, the rollers stretch out of the top of the frame body and are used for supporting the bridge fabrication machine, and a clamping piece used for being connected with the bridge fabrication machine is arranged on the frame body, so that the bridge fabrication machine follows the frame body to move synchronously along the moving direction of the transverse moving pad seat.
Optionally, the driving device is a telescopic mechanism, the supporting leg is provided with a counter-force seat, one end of the telescopic mechanism is hinged to the counter-force seat, and the other end of the telescopic mechanism is hinged to the transverse moving pad seat.
Optionally, the telescopic mechanism is an electric push rod, a pneumatic cylinder or a hydraulic cylinder.
Optionally, a plurality of traverse slideways are arranged on the top of the supporting leg along the length direction of the supporting leg, and the traverse pad is supported on the traverse slideways.
Optionally, the clamping piece is arranged at one end of the frame body in the length direction, and the clamping piece comprises two guide plates arranged at the top of the frame body and used for abutting against the side face of the lower chord of the bridge fabrication machine.
Optionally, the longitudinal section of the frame body is in an inverted trapezoid shape, and the length direction of the frame body is matched with the length direction of the bridge fabrication machine.
Optionally, the frame body includes a plurality of inverted trapezoidal plates that are arranged side by side, and every two adjacent inverted trapezoidal plates are connected through the stiffening plate.
Optionally, every group the gyro wheel all includes two gyro wheel bodies, two connect through the pivot between the gyro wheel body, each pivot parallel arrangement, the gyro wheel rotates and sets up in the pivot, be equipped with on the frame body and be used for the installation the mount pad of pivot, the pivot along the width direction of frame body extends.
Optionally, both sides of each roller body are provided with limiting parts for limiting the position of the roller body, and the top of each supporting leg is provided with a plurality of telescopic parts for supporting the bridge fabrication machine.
The large-span bridge fabrication machine comprises a bridge fabrication machine body and a plurality of support legs arranged at the bottom of the bridge fabrication machine body, wherein the top of at least one support leg is provided with the sliding device used for supporting the bridge fabrication machine body.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
this application sets up displacement device on the well, back landing leg of bridge fabrication machine, during the use, drives the sideslip base removal through drive arrangement, and then drives the bridge fabrication machine sideslip, makes it reach preset position, simple structure, convenient operation. Sliding friction is converted into rolling friction by arranging auxiliary supporting equipment, so that the friction force of a contact position is reduced, and the service life of the bridge fabrication machine and the service life of the supporting legs are prolonged. Make the bridging machine follow sideslip base and frame body synchronous motion through setting up joint spare, increase the accuracy of bridging machine location. And the roller and the clamping piece simultaneously limit the freedom degree of the bridge fabrication machine along the length direction of the transverse moving cushion seat, reduce the stress of the clamping piece and prolong the service life of the clamping piece.
Drawings
FIG. 1 is a schematic illustration of a bridge fabrication machine via in accordance with an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic view of a skid supported between a leg and a bridge fabrication machine in an embodiment of the present invention;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a front view of the glider supported on the legs according to one embodiment of the present invention;
fig. 6 is a top view of an auxiliary support apparatus in an embodiment of the present invention.
Reference numerals:
1. a support leg; 11. a counter-force seat; 2. transversely moving the pad seat; 3. an auxiliary support device; 31. a frame body; 32. a guide plate; 33. an inverted trapezoidal plate; 34. a stiffening plate; 4. a roller; 41. a roller body; 42. a rotating shaft; 43. a limiting member; 5. a telescoping mechanism; 6. a telescoping member; 7. setting a chord of the bridge fabrication machine; 8. and a cushion block.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 1 to 6, the sliding device of a large-span bridge fabrication machine provided by the embodiment of the present application comprises a traverse pad 2 slidably disposed on the top of a leg 1 of the bridge fabrication machine, and at least one auxiliary support device 3 disposed on the top of the traverse pad 2, wherein the bridge fabrication machine is supported on the top of the auxiliary support device 3. Wherein, the top of landing leg 1 can set up two sideslip seatings 2, ensures the balance of bridging machine, and is convenient for bridging machine along two direction sideslip. As shown in fig. 5, the leg 1 is provided with a driving device for driving the traverse mat base 2 to move, the moving direction of the traverse mat base 2 is adapted to the length direction of the leg 1, where the adaptation means that the moving direction of the traverse mat base 2 is the same as the length direction of the leg 1, or the angle of the traverse mat base 2 is deflected in the moving process, so that the moving direction of the traverse mat base 2 and the length direction of the leg 1 form a certain angle.
Referring to fig. 2 and 6, the auxiliary supporting device 3 includes a frame body 31 disposed on the top of the traverse pad 2 and a plurality of sets of rollers 4 rolling synchronously along the length direction of the bridge fabrication machine, and when the bridge fabrication machine passes through the hole, the length direction of the frame body 31 is the same as the moving direction of the bridge fabrication machine, so as to share the force in the horizontal direction and reduce the friction force applied to the bridge fabrication machine. The gyro wheel 4 stretches out the top of frame body 31 for support the bridging machine, through setting up gyro wheel 4, convert the static frictional force when the bridging machine via hole into rolling frictional force, resistance when reducing the bridging machine via hole.
Wherein the roller 4 is rotatably disposed in the frame body 31 such that a top portion of the roller 4 protrudes out of the frame body 31 for supporting the bridge fabrication machine. A support can be arranged at the top of the frame body 31, and the roller 4 is arranged on the support, so that the roller 4 completely extends out of the frame body 31 to play a role in supporting the bridge fabrication machine. It follows that the specific arrangement of the rollers 4 is not limited as long as the bridge fabrication machine can be supported on top of the rollers 4. The frame body 31 is provided with a clamping piece for being connected with a bridge fabrication machine, so that the bridge fabrication machine can move synchronously along the moving direction of the transverse moving pad seat 2 along with the frame body 31.
The support leg 1 can comprise a front support leg, a middle support leg or a rear support leg for supporting the bridge fabrication machine, and can be selected according to the mode of the through hole. As shown in figure 1, when the bridge fabrication machine passes through a hole, the middle support leg is supported on the bridge pier pad stone, the rear support leg is supported on the end section of the formed beam, the front support leg is lifted, and the bridge fabrication machine slides relative to the middle support leg and the rear support leg. Therefore, the sliding devices are arranged at the tops of the middle supporting leg and the rear supporting leg, and the sliding devices are not arranged at the tops of the front supporting leg, so that the cost is reduced. And in the small-radius bridge construction process, the bridge fabrication machine needs to deflect to the designed position before passing through the hole, and at the moment, the sliding devices on the middle support leg and the rear support leg can drive the bridge fabrication machine to transversely move, so that the operation is convenient, and the equipment cost is saved. In other hole passing modes, the front supporting leg is supported on a pier, the middle supporting leg and the rear supporting leg are lifted, and the sliding device can be arranged at the top of the front supporting leg, so that the equipment cost is saved.
The application provides a theory of operation of the device that slides of large-span bridging machine in little radius bridge work progress as follows:
before the hole is passed, a driving device at the top of the rear leg drives the transverse moving cushion seat 2 to move towards the direction of the outer side of the curve. At this time, since the clamping piece and the roller 4 limit the freedom of the bridge fabrication machine along the length direction of the frame body 31, when the traverse mat 2 drives the frame body 31 to move, the bridge fabrication machine will move along with the frame body 31. Meanwhile, the clamping piece is clamped at the bottom of the frame body 31, so that the length direction of the frame body 31 is always perpendicular to the length direction of the bridge fabrication machine, and therefore the transverse moving cushion seat 2 deflects in a small amplitude in the moving process, and the length direction of the transverse moving cushion seat 2 is perpendicular to the length direction of the bridge fabrication machine. When the tail end of the bridge fabrication machine moves in place, the driving device at the top of the middle support leg drives the transverse moving pad seat 2 to move towards the outer side direction of the curve, so that the middle of the bridge fabrication machine moves in place, and the deflection of the bridge fabrication machine is completed. Wherein, when two sideslip seatings 2 were set up at the top of landing leg 1, all articulated on every sideslip seatings 2 have a drive arrangement, sideslip seatings 2 at the sideslip in-process, and one of them drive arrangement provides drive power, and another drive arrangement and sideslip seatings 2 separation drive another displacement device through the bridging machine and remove. On the other hand, both driving devices may also generate driving force, but the direction of the supplied driving force is opposite, so that the bridge fabrication machine moves towards the design position.
During the via hole, the sliding devices at the tops of the middle supporting leg and the middle supporting leg are moved to the top of the bridge pier base stone through the hoisting equipment of the bridge fabrication machine, and the middle supporting leg is rotated, so that the length direction of the middle supporting leg is consistent with the width direction of the bridge fabrication machine. The sliding devices at the top of the rear supporting legs and the top of the rear supporting legs are moved to the top of the formed beam end section through the hoisting equipment, and meanwhile, the rear supporting legs are rotated, so that the length directions of the rear supporting legs are consistent with the width direction of the bridge fabrication machine. The steel rail is laid on the formed beam section, the rear supporting point trolley of the bridge fabrication machine is supported on the steel rail, the power device is arranged on the rear supporting point trolley, the rear supporting point trolley is pushed by the power device to move along the steel rail, and then the bridge fabrication machine slides along the direction of the through hole relative to the middle supporting leg and the rear supporting leg, and the through hole of the bridge fabrication machine is completed.
This application sets up displacement device on the well, back landing leg of bridge fabrication machine, during the use, drives sideslip base 2 through drive arrangement and removes, and then drives the sideslip of bridge fabrication machine, makes it reach preset position, simple structure, convenient operation. Sliding friction is converted into rolling friction by arranging the auxiliary supporting equipment 3, the friction force of a contact position is reduced, and the service life of the bridge fabrication machine and the service life of the supporting leg 1 are prolonged. Make the bridging machine follow sideslip base 2 and frame body 31 synchronous motion through setting up joint spare, increase the accuracy of bridging machine location. And the roller 4 and the clamping piece simultaneously limit the freedom degree of the bridge fabrication machine along the length direction of the transverse moving cushion seat 2, reduce the stress of the clamping piece and prolong the service life of the clamping piece.
As shown in fig. 5, the driving device of the present application is a telescopic mechanism 5, a reaction force seat 11 is provided on the leg 1, one end of the telescopic mechanism 5 is hinged on the reaction force seat 11, and the other end is hinged on the traverse bolster 2. Specifically, both ends of the telescopic mechanism 5, and the traverse mat 2 and the reaction force base 11 are rotated in the horizontal direction. With this design, the retracting mechanism 5 can provide a sufficient driving force for the traverse bolster 2 even if the traverse bolster 2 deflects during movement. Preferably, the telescopic mechanism 5 is an electric push rod, a pneumatic cylinder or a hydraulic cylinder. Simple structure, be convenient for realize automated control.
Further optimally, in order to reduce the friction force of the transverse moving base 2 in the moving process, a plurality of transverse moving slideways are arranged at the top of the supporting leg 1 along the length direction of the supporting leg, the transverse moving base 2 is supported on the transverse moving slideways, the driving force in the transverse moving process is reduced, and the service life of the telescopic mechanism 5 is prolonged. Meanwhile, the friction force of the transverse moving pad seat 2 in the width direction is increased by the transverse moving slide way, the sliding phenomenon between the sliding base and the supporting leg 1 in the moving process of the bridge fabrication machine is avoided, and the practicability is improved.
With reference to fig. 2 and 4, the clamping member of the present application is disposed at one end of the frame body 31 in the length direction, the clamping member includes two guide plates 32 disposed at the top of the frame body 31 and used for abutting against the side of the lower chord 7 of the bridge fabrication machine, the direction of the guide plates 32 is the same as the moving direction of the bridge fabrication machine, and the two guide plates 32 are disposed in parallel. Specifically, the two guide plates 32 can both abut against the outer side of the lower string 7 of the bridge fabrication machine, or both abut against the inner side of the lower string 7 of the bridge fabrication machine, and when the bridge fabrication machine passes through a hole, the two guide plates 32 abut against the lower string 7 of the bridge fabrication machine, so that the bridge fabrication machine is prevented from deviating from the longitudinal movement direction. Further optimally, in order to increase the supporting strength of the guide plate 32, a supporting plate can be arranged on the side of the guide plate 32 far away from the lower chord 7 of the bridge fabrication machine.
As shown in fig. 2, the longitudinal section of the frame body 31 is inverted trapezoidal, and the longitudinal direction of the frame body 31 is adapted to the longitudinal direction of the bridge fabrication machine. The adaptation here means that the length direction of the frame body 31 is parallel to the length direction of the bridge fabrication machine, or an included angle of a small angle exists between the two. When the hole is drilled, the bridge fabrication machine moves at the top of the roller 4, the driving force of the power device and the friction between the bridge fabrication machine and the supporting leg 1 are reduced, and the service lives of the power device and the supporting leg 1 are prolonged. Bear the weight of making the bridge crane through gyro wheel 4, rethread frame body 31 and sideslip base 2 transmit it for landing leg 1, increase the stability of landing leg 1 structure, and the longitudinal section of frame body 31 is down trapezoidal, effectively shares the power of horizontal direction, increases landing leg 1's life.
Preferably, the frame body 31 includes a plurality of inverted trapezoidal plates 33 arranged side by side, and each two adjacent inverted trapezoidal plates 33 are connected by a stiffener 34. Wherein, the stiffening plates 34 are arranged at the end parts and the middle part of the inverted trapezoidal plates 33, and the strength of the frame body 31 is increased. Further preferably, the middle of the frame body 31 is provided with a support portion for placing the pad 8. After the bridge fabrication machine passes through the hole, a cushion block 8 is placed at the top of the supporting part and used for supporting the bridge fabrication machine, so that the roller 4 is separated from the bridge fabrication machine, and the service life of the roller 4 is prolonged. Wherein, the supporting part is formed by stiffening plates 34 densely arranged in the middle of the inverted trapezoidal plate 33, and the cushion blocks 8 are arranged on the top of the stiffening plates 34.
Referring to fig. 2, 3 and 4, when the spacer 8 is placed, the bridge fabrication machine needs to be jacked up, so that the present application provides a plurality of expansion pieces 6 for supporting the bridge fabrication machine on the top of the support leg 1. And in order to facilitate the placement of the cushion blocks 8, the side surface of each auxiliary supporting device 3 is provided with a telescopic piece 6. Preferably, the telescopic member 6 is a cylinder assembly or a hydraulic cylinder assembly, and has a simple structure and convenient operation.
As shown in fig. 2, 4 and 6, in some embodiments, each set of rollers 4 includes two roller bodies 41, the two roller bodies 41 are connected by a rotating shaft 42, the rotating shafts 42 are arranged in parallel, the rollers 4 are rotatably arranged on the rotating shafts 42, the frame body 31 is provided with a mounting seat for mounting the rotating shafts 42, and the rotating shafts 42 extend along the width direction of the frame body 31. The rolling direction of the roller 4 is consistent with the length direction of the frame body 31, and further consistent with the moving direction of the bridge fabrication machine, and the resistance of the bridge fabrication machine during hole passing is reduced. In order to prevent the roller body 41 from moving along the length direction of the rotating shaft 42, a limiting member 43 for limiting the position of the roller body 41 is disposed on each of the two sides of each roller body 41, so as to increase the stability of the rotation of the roller body 41. The limiting member 43 is a sleeve fixedly disposed on the rotating shaft 42, and the end portions of the two sleeves abut against the roller body 41.
In other embodiments, each set of rollers 4 includes two roller bodies 41, the two roller bodies 41 are connected by a rotating shaft 42, the rotating shafts 42 are arranged in parallel, the rollers 4 are fixedly disposed on the rotating shafts 42, the frame body 31 is provided with a mounting seat for mounting the rotating shafts 42, and the rotating shafts 42 are rotatably disposed on the mounting seat.
In other embodiments, each set of rollers 4 includes two roller bodies 41, and the frame body 31 is provided with a support for mounting the roller bodies 41, and the roller bodies 41 are rotatably disposed on the support.
It can be seen that the arrangement of the roller 4 is not limited, as long as the roller can rotate on the frame body 31.
The application also discloses a large-span bridge fabrication machine, including bridge fabrication machine body and a plurality of landing legs 1 of setting in bridge fabrication machine body bottom, the top of at least one landing leg 1 is equipped with the displacement device who is used for supporting the bridge fabrication machine body. The structure and the working principle of the sliding device, namely the sliding device of the large-span bridge fabrication machine, are the same, so that the structure and the working principle are not described too much. The support legs 1 comprise a front support leg, a middle support leg and a rear support leg which are supported at the bottom of the bridge fabrication machine body. Can design according to the difference of the support mode of via hole, if when the bridge fabrication machine is at the via hole, well landing leg supports on the pier stone pad, and the back landing leg supports on the end section of having become the roof beam, and preceding landing leg lifts up, and the bridge fabrication machine body slides for well landing leg and back landing leg, and at this moment, the top of well landing leg and back landing leg sets up displacement device. In other hole passing modes, the front supporting leg is supported on a pier, the middle supporting leg and the rear supporting leg are lifted, the bridge fabrication machine body moves relative to the front supporting leg, and at the moment, the top of the front supporting leg is provided with the sliding device.
The application provides a device for satisfying the integral vector direction transverse movement of a bridge fabrication machine in the processes of curve bridge deck via hole forward movement, curve section assembly bridge erection and the like. The erection operation of the large-span and small-radius curve movable support bridge fabrication machine can be realized. The bridge girder erection machine provides an effective solution for bridge girder erection machines in large-span and small-radius curve bridges frequently appearing in railway construction in western mountainous areas in China.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The sliding device is characterized by comprising a transverse moving pad arranged at the top of a support leg of a bridge fabrication machine in a sliding manner and at least one auxiliary supporting device arranged at the top of the transverse moving pad, wherein the support leg is provided with a driving device used for driving the transverse moving pad to move, the moving direction of the transverse moving pad is matched with the length direction of the support leg, the auxiliary supporting device comprises a frame body arranged at the top of the transverse moving pad and a plurality of groups of rollers which roll synchronously along the length direction of the bridge fabrication machine, the rollers extend out of the top of the frame body and are used for supporting the bridge fabrication machine, and a clamping piece used for being connected with the bridge fabrication machine is arranged on the frame body, so that the bridge fabrication machine follows the frame body to move synchronously along the moving direction of the transverse moving pad.
2. The skidding device of a large-span bridge fabrication machine of claim 1 wherein the driving device is a telescoping mechanism, the leg is provided with a reaction seat, one end of the telescoping mechanism is hinged on the reaction seat, and the other end of the telescoping mechanism is hinged on the traverse bolster.
3. The skidding device of the large-span bridge fabrication machine of claim 2, wherein the telescoping mechanism is an electric push rod, a pneumatic cylinder or a hydraulic cylinder.
4. The skidding apparatus for a large-span bridge fabrication machine of claim 1 wherein the top of said legs are provided with a plurality of traverse runners along the length thereof, said traverse runners being supported by said traverse runners.
5. The slipping device of a large-span bridge fabrication machine of claim 1, wherein the clamping member is disposed at one end of the frame body in the length direction, and the clamping member comprises two guide plates disposed at the top of the frame body and used for abutting against the side surface of the lower chord of the bridge fabrication machine.
6. The slipping device of a large-span bridge fabrication machine according to claim 1, wherein the longitudinal section of the frame body is in an inverted trapezoid shape, and the length direction of the frame body is adapted to the length direction of the bridge fabrication machine.
7. The slipping device of a large-span bridge fabrication machine according to claim 6, wherein the frame body comprises a plurality of inverted trapezoidal plates arranged side by side, and every two adjacent inverted trapezoidal plates are connected through a stiffening plate.
8. The slipping device of a large-span bridge fabrication machine according to claim 6, wherein each set of rollers includes two roller bodies connected by a rotating shaft, each rotating shaft is disposed in parallel, the rollers are rotatably disposed on the rotating shafts, the frame body is provided with a mounting seat for mounting the rotating shafts, and the rotating shafts extend along the width direction of the frame body.
9. The slipping device of a large-span bridge fabrication machine of claim 8, wherein each roller body is provided with limiting members on both sides thereof for limiting the position of the roller body, and the top of the leg is provided with a plurality of telescopic members for supporting the bridge fabrication machine.
10. A large-span bridge fabrication machine, which comprises a bridge fabrication machine body and a plurality of support legs arranged at the bottom of the bridge fabrication machine body, wherein the top of at least one support leg is provided with a sliding device according to any one of claims 1 to 9 for supporting the bridge fabrication machine body.
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| CN202010005124.4A CN111074792A (en) | 2020-01-03 | 2020-01-03 | Large-span bridge fabrication machine and sliding device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376430A (en) * | 2020-10-27 | 2021-02-19 | 中铁十二局集团有限公司 | Transverse pushing construction method for bridge fabrication machine |
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Application publication date: 20200428 |