CN211312212U - Descending type bridge girder erection machine with single girder - Google Patents
Descending type bridge girder erection machine with single girder Download PDFInfo
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- CN211312212U CN211312212U CN201921658694.2U CN201921658694U CN211312212U CN 211312212 U CN211312212 U CN 211312212U CN 201921658694 U CN201921658694 U CN 201921658694U CN 211312212 U CN211312212 U CN 211312212U
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Abstract
The utility model discloses a descending type bridge girder erection machine with single girder, which comprises a support frame, a first pier, a second pier and a third pier, wherein the first pier, the second pier and the third pier are arranged below the support frame, the tops of the third pier and the second pier are respectively and fixedly connected with the bottoms of the two ends of the support frame, a girder is arranged above the support frame, a guide girder is connected in the girder, and one end of the guide girder runs through the end part of the girder; the utility model discloses a near well landing leg position of first bridge girder has increased the strong point, and it is middle flagging when striding the hole to solved to well amount of deflection has been reduced, and the resistance reduces when making the bridge girder stride the hole, and near well landing leg position of second bridge girder has increased bracket dolly strong point, thereby has strengthened the stability of hole in-process is striden to the complete machine, increases the security of bridge girder transportation, improves work efficiency.
Description
Technical Field
The utility model relates to a bridge girder erection machine specifically is a descending bridge girder erection machine of single track roof beam, belongs to the descending bridge girder erection machine of single track roof beam and strides hole application technical field.
Background
In the bridge erecting industry, in order to meet the requirement of continuous bridge erecting, a bridge erecting machine turns down a girder erecting machine between two bridge piers after erecting a bridge between the two bridge piers, so that the continuous bridge erecting is realized. The existing bridge girder erection machine hole spanning steps are as follows: the guide beam extends out of a main bridge of the bridge girder erection machine, the front support leg is fixed on the guide beam, when the guide beam extends to the upper part of the next bridge pier, the front support leg is stopped, opened and supported on the bridge pier and lifts the guide beam upwards; and then the cross-hole power mechanism at the tail end of the main beam for bridging downwards rotates the travelling wheels to support on the bridge floor and upwards lift the main beam for bridging, so that the rear support leg leaves the bridge floor, and the middle support leg also leaves the bridge pier, namely, the rear support leg and the middle support leg are both in a suspended state. The bridging girder cross-hole power mechanism pushes the bridging girder with the rear support leg and the middle support leg to move forwards along the guide beam until the bridging girder moves to a proper position, the cross-hole power mechanism at the tail end of the bridging girder retracts, the front support leg retracts, the rear support leg retracts on the bridge floor, the middle support leg supports on the bridge pier, and the cross-hole operation is completed.
The patent of current grant publication No. CN201485790U is a balanced type single nose girder bridge girder erection machine, this balanced type single nose girder bridge girder erection machine, can realize the erection of the single line or the double-track railway T roof beam of curvature radius more than or equal to 500 meters, however, this balanced type single nose girder bridge girder erection machine can 'T solve the centre droop when striding the hole, the great problem of well amount of deflection can' T be solved, simultaneously, also be difficult to solve the problem of quick removal bridge girder, for this reason, we provide a descending bridge girder erection machine of single track roof beam.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is just in place whole bridge girder height through the flexible hydro-cylinder work of frame both sides and adjust, place the bracket dolly in bridge girder bottom, flexible hydro-cylinder's secondary work for the bridge girder mutually supports with the bracket dolly, realize placing of bracket dolly, drive through striding hole power unit and adjust the pole rotation, thereby make the regulation pole support the bridge girder, walking wheel and ground contact, walking wheel with, the position of the bridge girder is changed to the realization under the common cooperation of bracket dolly.
The utility model solves the technical problems that:
(1) how to adjust the height of the whole bridging girder by the work of the telescopic oil cylinders on the two sides of the frame so as to place the bracket trolley at the bottom of the bridging girder, and the bridging girder and the bracket trolley are mutually matched by the secondary work of the telescopic oil cylinders so as to realize the placement of the bracket trolley, thereby solving the problem that the bracket trolley is difficult to be quickly placed in the prior art;
(2) how to drive through striding hole power unit and adjust the pole rotation to make the regulation pole support the bridge girder of putting up, walking wheel and ground contact realize changing the position of bridge girder under walking wheel and, the common cooperation of bracket dolly, solve the problem that is difficult to the fast migration bridge girder among the prior art.
The purpose of the utility model can be realized by the following technical scheme: a single-beam descending type bridge girder erection machine comprises a support frame, a first bridge pier, a second bridge pier and a third bridge pier, wherein the first bridge pier, the second bridge pier and the third bridge pier are arranged below the support frame, the tops of the third bridge pier and the second bridge pier are respectively and fixedly connected with the bottoms of the two ends of the support frame, a girder erection is arranged above the support frame, a guide beam is connected in the girder erection in a sliding mode, and one end of the guide beam penetrates through the end portion of the girder erection;
one end of the bridging girder is rotatably connected with an adjusting rod through a cross-hole power mechanism, walking wheels are mounted at the bottom of one end, far away from the bridging girder, of the adjusting rod, a mounting frame is fixedly sleeved at one end, close to the adjusting rod, of the bridging girder, a rear supporting leg is mounted at the top of the mounting frame, the top of the rear supporting leg penetrates through the bridging girder and is in contact with the top of the supporting frame, a limiting frame is fixedly sleeved at the other end of the bridging girder, a middle supporting leg is arranged above the limiting frame, and the bottom of the middle supporting leg penetrates;
a frame is sleeved between the rear support leg and the middle support leg on the outer side of the bridge girder, fixing seats are symmetrically fixed on two sides of the frame, telescopic oil cylinders are fixed in the fixing seats, and the end parts of output shafts of the telescopic oil cylinders penetrate through the bottoms of the fixing seats;
the top of the support frame is provided with a bracket trolley, the bracket trolley is positioned under the bridge girder, and the bracket trolley is matched with the bridge girder;
the bridge comprises a bridge girder, a guide beam, a front support leg and a first bridge pier, wherein the guide beam penetrates through one end of the bridge girder to be bridged and is provided with the front support leg, and the bottom end of the front support leg is in contact with the first bridge pier.
The utility model discloses a further technological improvement lies in: the support frame trolley is characterized in that the support frame trolley is composed of pulleys, a support, a rotating shaft and sleepers, the sleepers are arranged at the top of the support frame, the support is fixed at the top of each sleeper, the rotating shafts are symmetrically arranged in the support frames, the pulleys are sleeved on the outer sides of the rotating shafts, and the pulleys are rotatably connected with the rotating shafts through bearings.
The utility model discloses a further technological improvement lies in: the bottom of the frame is fixed with a fixed plate which is matched with the supporting frame.
The utility model discloses a further technological improvement lies in: be the equidistance setting between first pier, second pier and the third pier.
The utility model discloses a further technological improvement lies in: the frame is connected to the outer side of the bridging girder in a sliding mode.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the utility model is used, the frame is sleeved outside the bridge girder, the telescopic oil cylinders are arranged on two sides of the frame through the fixing seats, when the bridge girder is not used, the piston rods of the telescopic oil cylinders are retracted, the telescopic oil cylinders are not connected with the supporting frame, the guide beam extends to the upper part of the first bridge pier, the front support legs are unfolded and supported on the bridge pier and lift the guide beam upwards, at the moment, the frame is pushed to the vicinity of the middle support leg, the piston rods of the telescopic oil cylinders extend out and supported on the supporting frame and lift the bridge girder, the middle support leg leaves the second bridge pier to be suspended, the bracket trolley is moved to the lower part of the bridge girder and is close to the middle support leg, then the piston rods of the oil cylinders are retracted, the bridge girder is supported on the bracket trolley, the height of the whole bridge girder is adjusted through the work of the telescopic oil cylinders on two sides of, the bracket trolley is placed, the structure is simple, the operation is convenient, the time for installing the bracket trolley is saved, and the working efficiency is improved;
2. the cross-hole power mechanism at the tail end of the bridge girder rotates downwards, the travelling wheel is supported at the top of the support frame and lifts the bridge girder upwards, so that the rear support leg leaves the support frame, the cross-hole power mechanism pushes the bridge girder to move forwards along the guide beam together with the rear support leg and the middle support leg, when the rear support leg moves to the position of the bracket trolley, the bridge girder stops, and at the moment, the pivots at two ends of the cross hole of the bridge girder erection machine approach the distance in front of the cross hole; a piston rod of a telescopic oil cylinder on the frame extends out and is supported on a bridge floor and lifts a bridging girder, a bracket trolley is moved away, then the piston rod of the telescopic oil cylinder is retracted, the bridging girder falls back, a hole-crossing power mechanism continues to operate until the bridging girder and a middle supporting leg stop, the hole-crossing power mechanism drives an adjusting rod to rotate, so that the adjusting rod supports the bridging girder, a travelling wheel is contacted with the ground, the position of the bridging girder is changed under the common cooperation of the travelling wheel and the bracket trolley, a supporting point is added near the middle supporting leg of the first bridging girder, the problem of middle sagging during hole crossing is solved, the middle deflection is reduced, the resistance during hole crossing of the bridging girder is reduced, a bracket trolley supporting point is added near the middle supporting leg of the second bridging girder, the stability during hole crossing of the whole machine is enhanced, and the time for manually adding the bridge at one point is saved, the transportation safety of the bridge girder is increased, and the working efficiency is improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the bridge girder before moving in the utility model;
fig. 2 is a schematic structural view of the bridge girder after moving;
FIG. 3 is a schematic view of the frame structure of the present invention;
FIG. 4 is a schematic side view of the frame of the present invention;
fig. 5 is a schematic structural view of the carriage of the present invention.
In the figure: 1. bridging the girder; 2. a frame; 3. a fixing plate; 4. a telescopic oil cylinder; 5. a fixed seat; 6. a guide beam; 7. a front leg; 8. a first bridge pier; 9. a cross-hole power mechanism; 10. a traveling wheel; 11. a cradle dolly; 12. a pulley; 13. a support; 14. a rotating shaft; 15. crossties; 16. a middle support leg; 17. a rear leg; 18. A second bridge pier; 19. a mounting frame; 20. a support frame; 21. a third bridge pier; 22. adjusting a rod; 23. a limiting frame.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, a single-channel girder descending type bridge girder erection machine comprises a support frame 20, a first pier 8, a second pier 18 and a third pier 21, wherein the first pier 8, the second pier 18 and the third pier 21 are arranged below the support frame 20, the tops of the third pier 21 and the second pier 18 are respectively and fixedly connected with the bottoms of the two ends of the support frame 20, a girder 1 is arranged above the support frame 20, a guide girder 6 is slidably connected with the girder 1, and one end of the guide girder 6 penetrates through the end part of the girder 1;
one end of the bridging girder 1 is rotatably connected with an adjusting rod 22 through a cross-hole power mechanism 9, the bottom of one end, away from the bridging girder 1, of the adjusting rod 22 is provided with a traveling wheel 10, a motor is fixed in the adjusting rod 22, the end part of an output shaft of the motor is fixedly connected with the center of one end of the traveling wheel 10, one end, close to the adjusting rod 22, of the bridging girder 1 is fixedly sleeved with a mounting rack 19, the top of the mounting rack 19 is provided with a rear supporting leg 17, the top of the rear supporting leg 17 penetrates through the bridging girder 1 to be contacted with the top of a supporting rack 20, the other end of the bridging girder 1 is fixedly sleeved with a limiting rack 23, a middle supporting leg 16 is arranged above the limiting;
the frame 2 is sleeved between the rear supporting leg 17 and the middle supporting leg 16 on the outer side of the bridge girder 1, fixing seats 5 are symmetrically fixed on two sides of the frame 2, a telescopic oil cylinder 4 is fixed inside each fixing seat 5, and the end part of an output shaft of each telescopic oil cylinder 4 penetrates through the bottom of each fixing seat 5;
the top of the support frame 20 is provided with a bracket trolley 11, the bracket trolley 11 is positioned under the bridge girder 1, and the bracket trolley 11 is matched with the bridge girder 1;
the guide beam 6 penetrates through one end of the main beam 1 of the bridge and is provided with a front support leg 7, and the bottom end of the front support leg 7 is in contact with the first bridge pier 8.
The bottom of the frame 2 is fixed with a fixing plate 3, the fixing plate 3 is matched with the support frame 20, and the strength of the frame 2 is increased through the arrangement of the fixing plate 3.
Be the equidistance setting between first pier 8, second pier 18 and the third pier 21, first pier 8, second pier 18 and the third pier 21 through the equidistance setting increase bridge construction's stability and security.
The frame 2 is connected to the outer side of the bridging girder 1 in a sliding manner, and is connected to the outer side of the bridging girder 1 in a sliding manner through the frame 2, so that the position of the frame 2 is convenient to change, and the support position of the bridging girder 1 is adjusted.
The working principle is as follows: when the utility model is used, firstly, the frame 2 is sleeved outside the bridge girder 1, the frame 2 can move on the bridge girder 1, when not in use, the frame can be pushed to one side of the near-middle supporting leg 16 without interfering the bridge girder feeding, the fixed plate 3 fixed at the bottom of the frame 2 increases the supporting strength of the frame 2, the telescopic oil cylinders 4 are arranged at two sides of the frame 2 through the fixed seat 5, when not in use, the piston rods of the telescopic oil cylinders 4 are retracted and are not contacted with the supporting frame 20, the front supporting legs 7 are unfolded and supported on the bridge piers and lift the guide beams 6 upwards when the guide beams 6 extend to the upper part of the first bridge pier 8, at the moment, the frame 2 is pushed to the vicinity of the middle supporting leg 16, the piston rods of the telescopic oil cylinders 4 extend out and are supported on the supporting frame 20 and lift the bridge girder 1, the middle supporting leg 16 leaves the second bridge pier 18 to be suspended, the bridge girder 1 falls back and is supported on the bracket trolley 11; then the cross-hole power mechanism 9 at the tail end of the main girder 1 of the bridge rotates downwards to rotate the travelling wheels 10 to be supported on the support frame 20 and lift the main girder 1 of the bridge upwards, so that the rear support legs 17 leave the bridge floor, at the moment, the bracket trolley 11 is supported at the middle position between the rear support legs 17 and the front support legs 7 and plays a role of supporting the main girder 1 of the bridge, the middle drooping of the main girder 1 of the bridge and the guide beams 6 caused by the self-weight of the main girder 1 of the bridge, 6 and 16 is reduced, so that the middle deflection is reduced, the cross-hole power mechanism 9 at the tail end of the main girder 1 of the bridge rotates downwards, the travelling wheels 10 are supported at the top of the support frame 20 and lift the main girder 1 of the bridge upwards, so that the rear support legs 17 leave the support frame 20, the cross-hole power mechanism 9 pushes the main girder 1 of the bridge to move forwards along the guide beams 6, at the moment, the pivots at the two ends of the span hole of the bridge girder erection machine approach the distance in front of the span hole; a piston rod of a telescopic oil cylinder 4 on the frame 2 extends out to be supported on a bridge floor and lifts a bridging girder 1, a bracket trolley 11 is removed, then the piston rod of the telescopic oil cylinder 4 is retracted, the bridging girder 1 falls back, a hole-crossing power mechanism 9 continues to operate until the bridging girder 1 and a middle supporting leg 16 stop, the hole-crossing power mechanism 9 at the tail end of the bridging girder 1 is retracted, a front supporting leg 7 is retracted, a rear supporting leg 17 falls back on the bridge floor, the middle supporting leg 16 supports a pier, and hole crossing is completed.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a descending bridge girder erection machine of single track roof beam which characterized in that: the bridge girder erection device comprises a support frame (20), a first bridge pier (8), a second bridge pier (18) and a third bridge pier (21), wherein the first bridge pier (8), the second bridge pier (18) and the third bridge pier (21) are arranged below the support frame (20), the tops of the third bridge pier (21) and the second bridge pier (18) are respectively and fixedly connected with the bottoms of the two ends of the support frame (20), a bridge girder erection (1) is arranged above the support frame (20), a guide beam (6) is connected in the bridge girder erection (1) in a sliding mode, and one end of the guide beam (6) penetrates through the end portion of the bridge girder erection (1);
one end of the bridging girder (1) is rotatably connected with an adjusting rod (22) through a cross-hole power mechanism (9), the bottom of one end, far away from the bridging girder (1), of the adjusting rod (22) is provided with a traveling wheel (10), one end, close to the adjusting rod (22), of the bridging girder (1) is fixedly sleeved with a mounting frame (19), the top of the mounting frame (19) is provided with a rear supporting leg (17), the top of the rear supporting leg (17) penetrates through the bridging girder (1) to be in contact with the top of a supporting frame (20), the other end of the bridging girder (1) is fixedly sleeved with a limiting frame (23), a middle supporting leg (16) is arranged above the limiting frame (23), and the bottom of the middle supporting leg (16) penetrates through the girder (1);
a frame (2) is sleeved between a rear supporting leg (17) and a middle supporting leg (16) on the outer side of the bridge girder (1), fixing seats (5) are symmetrically fixed on two sides of the frame (2), a telescopic oil cylinder (4) is fixed inside each fixing seat (5), and the end part of an output shaft of each telescopic oil cylinder (4) penetrates through the bottom of each fixing seat (5);
a bracket trolley (11) is arranged at the top of the support frame (20), the bracket trolley (11) is positioned under the bridge girder (1), and the bracket trolley (11) is matched with the bridge girder (1);
the bridge girder erection device is characterized in that a front supporting leg (7) is installed at one end, penetrating through the bridge girder (1), of the guide beam (6), and the bottom end of the front supporting leg (7) is in contact with a first bridge pier (8).
2. The single-track-beam descending bridge girder erection machine according to claim 1, wherein the bracket trolley (11) is composed of pulleys (12), a support (13), a rotating shaft (14) and sleepers (15), the sleepers (15) are arranged at the top of the support frame (20), the support (13) is fixed at the top of the sleepers (15), the rotating shaft (14) is symmetrically arranged in the support (13), the pulleys (12) are sleeved outside the rotating shaft (14), and the pulleys (12) are rotatably connected with the rotating shaft (14) through bearings.
3. A single-track-girder descending bridge girder erection machine according to claim 1, wherein a fixing plate (3) is fixed to the bottom of the frame (2), and the fixing plate (3) is matched with the supporting frame (20).
4. The descending bridge girder erection machine of claim 1, wherein the first pier (8), the second pier (18) and the third pier (21) are arranged at equal intervals.
5. A single-track-girder descending bridge girder erection machine according to claim 1, wherein said frame (2) is slidably connected to the outside of the main girder (1) for erecting the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921658694.2U CN211312212U (en) | 2019-09-30 | 2019-09-30 | Descending type bridge girder erection machine with single girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921658694.2U CN211312212U (en) | 2019-09-30 | 2019-09-30 | Descending type bridge girder erection machine with single girder |
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| CN211312212U true CN211312212U (en) | 2020-08-21 |
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| CN201921658694.2U Active CN211312212U (en) | 2019-09-30 | 2019-09-30 | Descending type bridge girder erection machine with single girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123936A (en) * | 2022-06-22 | 2022-09-30 | 中铁二十四局集团桥梁建设有限公司 | Single-arm-support bridge crane and using method thereof |
-
2019
- 2019-09-30 CN CN201921658694.2U patent/CN211312212U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123936A (en) * | 2022-06-22 | 2022-09-30 | 中铁二十四局集团桥梁建设有限公司 | Single-arm-support bridge crane and using method thereof |
| CN115123936B (en) * | 2022-06-22 | 2023-12-08 | 中铁二十四局集团桥梁建设有限公司 | Single-arm bridge girder erection machine and application method thereof |
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