CN110607760A - Landing leg transition folding mechanism of bridge girder erection machine - Google Patents
Landing leg transition folding mechanism of bridge girder erection machine Download PDFInfo
- Publication number
- CN110607760A CN110607760A CN201910990189.6A CN201910990189A CN110607760A CN 110607760 A CN110607760 A CN 110607760A CN 201910990189 A CN201910990189 A CN 201910990189A CN 110607760 A CN110607760 A CN 110607760A
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- collision
- support
- bridge girder
- oil cylinder
- platform
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- 230000007704 transition Effects 0.000 title claims abstract description 17
- 239000002023 wood Substances 0.000 claims abstract description 25
- 230000008602 contraction Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 3
- 206010057071 Rectal tenesmus Diseases 0.000 description 2
- 208000012271 tenesmus Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a support leg transition folding mechanism of a bridge girder erection machine, which comprises a bracket, a bridge girder, a connecting seat, support legs, a first telescopic oil cylinder, a first support seat, a second support seat, a platform, a hinge, a second telescopic oil cylinder, a third support seat, a fourth support seat, an anti-collision wood block, a bridge floor, a slide block, an anti-collision spring, an anti-collision plate, a telescopic spring, a limiting block, a convex block, a loop bar, a pushing spring, a baffle plate and a slide bar, wherein the top of the bridge floor is provided with the bridge girder, the bracket is sleeved outside the bridge girder, the platform is pulled up by the contraction of the second telescopic oil cylinder in a rotating way around the hinge, the first telescopic oil cylinder pushes the support legs to rotate around a pin shaft and rotate to the bridge girder, the platform and the support legs are overturned on the bridge girder after being rotated, so that the purpose of reducing the height is achieved, the, save a large amount of time, greatly reduced operating personnel intensity of labour, improved work efficiency.
Description
Technical Field
The invention relates to a folding mode, in particular to a landing leg transition folding mechanism of a bridge girder erection machine, and belongs to the technical field of bridge girder erection machine application.
Background
The counter force of the support leg is also called as the support counter force, and refers to the vertical counter force born by each support point when the walking or supporting device of the hoisting and transporting machinery works. The wheel pressure is obtained by dividing the leg reaction force by the number of wheels at the support point. When the crane works with the supporting legs, the supporting leg pressure is the supporting leg counter force.
Notice is CN 205874987U's a simple and easy bridge girder erection machine, this simple and easy bridge girder erection machine, simple structure is light, easily draw materials and preparation, convenient operation, be applicable to the simple and easy bridge girder erection machine of the hoist and mount of small-size bridge, however, this simple and easy bridge girder erection machine needs to be disassembled in the transition, reachs the new place and reassembles, comparatively spends time, can produce the tenesmus of supporting leg in the dismantlement formula simultaneously, causes the damage to the supporting leg easily, for this reason, we propose a folding mechanism in the transition of bridge girder erection machine supporting leg.
Disclosure of Invention
The invention aims to solve the problems that one end of a second oil cylinder is connected with a platform through a third support, the other end of the second oil cylinder is connected with supporting legs through a fourth support, a connecting bolt between the platform and the supporting legs is removed before transition, the second telescopic oil cylinder contracts, the platform rotates around a hinge and is pulled up, the first telescopic oil cylinder pushes the supporting legs to rotate around a pin shaft and rotate to a bridge girder, an anti-collision wood block is padded on the bridge girder, the platform and the supporting legs tilt over the anti-collision wood block on the bridge girder after being rotated, a limiting block moves towards the direction of a sliding rod after being acted by force to push the sliding rod to move towards the inside of a loop bar so as to compress a pushing spring, meanwhile, the loop bar drives a lug to move downwards so as to extrude the telescopic spring, and when the pushing spring and the telescopic spring are compressed, a reverse pushing force is formed so as to push the limiting block to move, the supporting leg and the platform finally fall to the top of the anti-collision plate, so that the anti-collision plate moves downwards to extrude the anti-collision spring, and the anti-collision spring forms a reverse pushing force after being compressed to enable the supporting leg and the platform to move upwards.
The technical problem solved by the invention is as follows:
(1) how to retract through the second telescopic oil cylinder, the platform rotates around the hinge and is pulled up, the first telescopic oil cylinder pushes the supporting legs to rotate around the pin shaft, the supporting legs rotate to the main bridge of the bridge, and the platform and the supporting legs are overturned above the main bridge of the bridge after being rotated, so that the problem that in the prior art, workers repeatedly disassemble the supporting legs to cause inconvenience is solved;
(2) how to promote the lug upward movement through expanding spring is reverse to drive the stopper up-and-down motion, the promotion spring in the loop bar promotes the slide bar side-to-side motion, and the mutually supporting of anticollision board and anticollision spring makes the supporting leg up-and-down motion, solves the problem that is difficult to reduce the tenesmus of supporting leg slope among the prior art.
The purpose of the invention can be realized by the following technical scheme: a support leg transition folding mechanism of a bridge girder erection machine comprises a bracket, a bridge girder erection girder, a connecting seat, support legs, a first telescopic oil cylinder, a first support, a second support, a platform, hinges, a second telescopic oil cylinder, a third support, a fourth support, an anti-collision wood block, a bridge floor, a slider, an anti-collision spring, an anti-collision plate, a telescopic spring, a limiting block, a protruding block, a loop bar, a pushing spring, a baffle and a sliding rod, wherein the bridge girder erection girder is arranged at the top of the bridge floor;
a first support is fixed at the top of the bracket, a first telescopic oil cylinder is rotatably connected to the top of the first support through a hinge, a fourth support and a second support are fixed on the outer side of the supporting leg, and the end part of an output shaft of the first telescopic oil cylinder is rotatably connected with the second support through a hinge;
one side of the fourth support is rotatably connected with a second telescopic oil cylinder through a hinge, a third support is fixed at the bottom of the platform, and the end part of an output shaft of the second telescopic oil cylinder is rotatably connected with the third support through a hinge;
anti-collision wood blocks are symmetrically fixed to the top of the bridging girder, and the two symmetrically arranged anti-collision wood blocks correspond to the top ends of the supporting legs and one end of the platform respectively.
The invention has further technical improvements that: the utility model discloses a safety protection device for automobile, including anticollision billet, anticollision inslot, loop bar, slide bar, push spring, loop bar and stopper fixed connection, anticollision groove has been seted up at anticollision billet top, the anticollision inslot is provided with the anticollision board, and anticollision board sliding connection is in the anticollision inslot, anticollision inslot symmetry is provided with the anticollision spring, and the both ends of anticollision spring respectively with anticollision billet and anticollision board fixed connection, the loop bar is installed to anticollision inslot symmetry, sliding connection has the slide bar in the loop bar, be provided with the push spring in the loop bar, and the both ends that push spring respectively with loop bar and slide bar fixed connection, anticollision inslot symmetry is provided with the stopper, the one end that.
The invention has further technical improvements that: the slide has been seted up to anticollision groove both sides wall symmetry, sliding connection has the lug in the slide, and the one end of lug and the loop bar keep away from the one end fixed connection of slide bar, be provided with expanding spring in the slide, expanding spring's both ends respectively with anticollision billet and lug fixed connection.
The invention has further technical improvements that: the anti-collision device is characterized in that sliding grooves are symmetrically formed in two side walls of the anti-collision groove, sliding blocks are symmetrically fixed to two ends of the anti-collision plate, and the sliding blocks are connected in the sliding grooves in a sliding mode.
The invention has further technical improvements that: the sleeve rod is internally provided with a baffle, the baffle is fixedly connected with one end of the sliding rod arranged in the sleeve rod, and one end of the baffle, far away from the sliding rod, is fixedly connected with the end part of the pushing spring.
Compared with the prior art, the invention has the beneficial effects that:
1. when the invention is used, one end of a second oil cylinder is connected with a platform through a third support, the other end of the second oil cylinder is connected with a supporting leg through a fourth support, a connecting bolt between the platform and the supporting leg is removed before transition, the second telescopic oil cylinder contracts, the platform rotates around a hinge and is pulled up, the first telescopic oil cylinder pushes the supporting leg to rotate around a pin shaft and rotates to a bridge girder, an anti-collision wood block is padded on the bridge girder, the platform and the supporting leg topple over the anti-collision wood block on the bridge girder after being rotated, the platform rotates around the hinge and is pulled up through contraction of the second telescopic oil cylinder, the first telescopic oil cylinder pushes the supporting leg to rotate around the pin shaft and rotates to the bridge girder, the platform and the supporting leg topple over the bridge girder after being rotated, thus achieving the purpose of reducing height, reducing height due to automatic completion of folding, improving stability and trafficability of transition transportation, the bridge girder erection machine does not need to be disassembled when being transferred like the existing bridge girder erection machine, and can be assembled when arriving at a new site, so that a large amount of time is saved, the labor intensity of operators is greatly reduced, and the working efficiency is improved.
2. When the top of the supporting leg and one end of the platform are overturned on the anti-collision wood block, the anti-collision wood block is firstly contacted with two symmetrically arranged limiting blocks, the limiting blocks move towards the direction of the sliding rod after being acted by force, the sliding rod is pushed to move towards the inside of the sleeve rod, so that the pushing spring is compressed, meanwhile, the sleeve rod drives the lug to move downwards, so that the telescopic spring is extruded, when the pushing spring and the telescopic spring are compressed, a reverse pushing force is formed, the limiting blocks are pushed to move towards the direction far away from the sliding rod, so that the falling force of the supporting leg and the platform is reduced, the supporting leg and the platform finally fall to the top of the anti-collision plate, so that the anti-collision plate moves downwards so as to extrude the anti-collision spring, the anti-collision spring forms a reverse pushing force after being compressed, so that the supporting leg and the, thereby drive the stopper up-and-down motion, the promotion spring in the loop bar promotes the slide bar side-to-side motion, the mutually supporting of anticollision board and anticollision spring for supporting leg up-and-down motion, the wearing and tearing impact force that disappears comes to carry out the consumption of falling force to the supporting leg, thereby reaches the effect of shock attenuation anticollision, simple structure, the simple operation increases the security of device, reduces people's economic loss.
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 view of a support leg of the present invention in a pre-folded configuration;
FIG. 2 is a schematic view of the folded support leg of the present invention;
FIG. 3 is a schematic structural view of the anti-collision wood block of the present invention;
FIG. 4 is an enlarged view of the area A of the present invention.
In the figure: 1. a bracket; 2. bridging the girder; 3. a connecting seat; 4. supporting legs; 5. a pin shaft; 6. a first telescopic cylinder; 7. a first support; 8. a second support; 9. a platform; 10. a hinge; 11. a connecting bolt; 12. a second telescopic cylinder; 13. a third support; 14. a fourth support; 15. anti-collision wood blocks; 16. a bridge deck; 17. a slider; 18. a chute; 19. an anti-collision spring; 20. an anti-collision plate; 21. an anti-collision groove; 22. a slideway; 23. a tension spring; 24. a limiting block; 25. a bump; 26. a loop bar; 27. a push spring; 28. a baffle plate; 29. a slide bar.
Detailed Description
The technical solutions 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a support leg transition folding mechanism of a bridge girder erection machine comprises a bracket 1, a bridge girder 2, a connecting seat 3, support legs 4, a first telescopic oil cylinder 6, a first support 7, a second support 8, a platform 9, a hinge 10, a second telescopic oil cylinder 12, a third support 13, a fourth support 14, a wood block 15, a bridge deck 16, a sliding block 17, a collision spring 19, a collision prevention plate 20, a telescopic spring 23, a limiting block 24, a convex block 25, a loop bar 26, a pushing spring 27, a baffle 28 and a sliding rod 29, wherein the bridge girder 2 is arranged at the top of the bridge deck 16, the bracket 1 is sleeved outside the bridge girder 2 and is in sliding connection with the bridge girder 2, the support legs 4 are arranged at the top of the bracket 1, the support legs 4 are in rotary connection with the bracket 1 through a pin 5 and the connecting seat 3, the platform 9 is arranged above the bridge girder 2, the platform 9 is rotatably connected with the top end of the supporting leg 4 through a hinge 10 and a connecting bolt 11;
a first support 7 is fixed at the top of the bracket 1, a first telescopic oil cylinder 6 is rotatably connected to the top of the first support 7 through a hinge 10, a fourth support 14 and a second support 8 are fixed on the outer side of the support leg 4, and the end part of an output shaft of the first telescopic oil cylinder 6 is rotatably connected with the second support 8 through the hinge 10;
one side of the fourth support 14 is rotatably connected with a second telescopic oil cylinder 12 through a hinge 10, a third support 13 is fixed at the bottom of the platform 9, and the end part of an output shaft of the second telescopic oil cylinder 12 is rotatably connected with the third support 13 through the hinge 10;
anti-collision wood blocks 15 are symmetrically fixed to the top of the bridging girder 2, and the two anti-collision wood blocks 15 symmetrically arranged correspond to the top ends of the supporting legs 4 and one end of the platform 9 respectively.
Anticollision groove 21 has been seted up at anticollision billet 15 top, be provided with anticollision board 20 in the anticollision groove 21, and anticollision board 20 sliding connection is in anticollision groove 21, the symmetry is provided with anticollision spring 19 in the anticollision groove 21, and anticollision spring 19's both ends respectively with anticollision billet 15 and anticollision board 20 fixed connection, loop bar 26 is installed to the symmetry in the anticollision groove 21, sliding connection has slide bar 29 in the loop bar 26, be provided with in the loop bar 26 and promote spring 27, and promote spring 27's both ends respectively with loop bar 26 and slide bar 29 fixed connection, the symmetry is provided with stopper 24 in the anticollision groove 21, slide bar 29 keeps away from the one end that promotes spring 27 and runs through loop bar 26 and stopper 24 fixed connection, through the setting of promoting spring 27 and slide bar 29 for stopper 24 round trip movement reduces the power of weighing down of supporting leg 4.
Slide 22 has been seted up to crashproof groove 21 both sides wall symmetry, sliding connection has lug 25 in slide 22, and the one end of lug 25 and loop bar 26 keep away from the one end fixed connection of slide bar 29, be provided with expanding spring 23 in the slide 22, expanding spring 23's both ends respectively with crashproof billet 15 and lug 25 fixed connection, through expanding spring 23 and lug 25's setting, carry out the shock attenuation for the first time to supporting leg 4.
The anti-collision device is characterized in that sliding grooves 18 are symmetrically formed in two side walls of the anti-collision groove 21, sliding blocks 17 are symmetrically fixed at two ends of the anti-collision plate 20, the sliding blocks 17 are connected in the sliding grooves 18 in a sliding mode, and the movement stability of the anti-collision plate 20 is improved through the arrangement of the sliding grooves 18 and the sliding blocks 17.
A baffle 28 is arranged in the loop bar 26, the baffle 28 is fixedly connected with one end of the sliding rod 29 arranged in the loop bar 26, one end of the baffle 28 far away from the sliding rod 29 is fixedly connected with the end part of the pushing spring 27, and the sliding rod 29 is prevented from being separated from the loop bar 26 through the arrangement of the baffle 28.
The working principle is as follows: when the invention is used, firstly, one end of a second oil cylinder is connected with a platform 9 through a third support 13, the other end of the second oil cylinder is connected with a supporting leg 4 through a fourth support 14, a connecting bolt 11 between the platform 9 and the supporting leg 4 is removed before transition, a second telescopic oil cylinder 12 is contracted, the platform 9 rotates around a hinge 10 and is pulled up, a first telescopic oil cylinder 6 pushes the supporting leg 4 to rotate around a pin shaft 5 and is screwed to a bridging girder 2, an anti-collision wood block 15 is padded on the bridging girder 2, the platform 9 and the supporting leg 4 are overturned on the anti-collision wood block 15 on the bridging girder 2 after being rotated, when the top of the supporting leg 4 and one end of the platform 9 are overturned on the anti-collision wood block 15, the anti-collision wood block contacts with two symmetrically arranged limiting blocks 24, the limiting blocks 24 move in the direction of a sliding rod 29 after being acted by force, the sliding rod 29 is pushed to move towards the inner, meanwhile, the loop bar 26 drives the bump 25 to move downwards, thereby extruding the telescopic spring 23, after the pushing spring 27 and the telescopic spring 23 are compressed, a reverse pushing force is formed, the limiting block 24 is pushed to move towards the direction far away from the sliding rod 29, thereby pushing the falling force of the supporting leg 4 and the platform 9 to be reduced, the supporting leg 4 and the platform 9 finally fall to the top of the anti-collision plate 20, thereby the anti-collision plate 20 moves downwards to extrude the anti-collision spring 19, the anti-collision spring 19 forms a reverse pushing force after being compressed, so that the supporting leg 4 and the platform 9 move upwards, and the shock absorption of the supporting leg 4 and the platform 9 is realized.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms 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 the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a folding mechanism that transitions of bridge girder erection machine landing leg which characterized in that: comprises a bracket (1), a bridge girder (2), a connecting seat (3), supporting legs (4), a first telescopic oil cylinder (6), a first support (7), a second support (8), a platform (9), a hinge (10), a second telescopic oil cylinder (12), a third support (13), a fourth support (14), an anti-collision wood block (15), a bridge deck (16), a sliding block (17), an anti-collision spring (19), an anti-collision plate (20), a telescopic spring (23), a limiting block (24), a convex block (25), a loop bar (26), a pushing spring (27), a baffle (28) and a sliding rod (29), wherein the top of the bridge deck (16) is provided with the girder (2), the bracket (1) is sleeved outside the bridge girder (2), the bracket (1) is in sliding connection with the bridge girder (2), the supporting legs (4) are arranged at the top of the bracket (1), and the supporting legs (4) are in rotary connection with the bracket (1) through pin shafts (5) and the connecting seat, a platform (9) is arranged above the bridge girder (2), and the platform (9) is rotatably connected with the top ends of the supporting legs (4) through hinges (10) and connecting bolts (11);
a first support (7) is fixed to the top of the bracket (1), a first telescopic oil cylinder (6) is rotatably connected to the top of the first support (7) through a hinge (10), a fourth support (14) and a second support (8) are fixed to the outer side of the supporting leg (4), and the end of an output shaft of the first telescopic oil cylinder (6) is rotatably connected with the second support (8) through the hinge (10);
one side of the fourth support (14) is rotatably connected with a second telescopic oil cylinder (12) through a hinge (10), a third support (13) is fixed at the bottom of the platform (9), and the end part of an output shaft of the second telescopic oil cylinder (12) is rotatably connected with the third support (13) through the hinge (10);
anti-collision wood blocks (15) are symmetrically fixed to the top of the bridging girder (2), and the two anti-collision wood blocks (15) symmetrically arranged correspond to the top ends of the supporting legs (4) and one end of the platform (9) respectively.
2. The folding mechanism for the support leg transition of the bridge erecting machine according to claim 1, wherein an anti-collision groove (21) is formed in the top of the anti-collision wood block (15), an anti-collision plate (20) is arranged in the anti-collision groove (21), the anti-collision plate (20) is slidably connected in the anti-collision groove (21), anti-collision springs (19) are symmetrically arranged in the anti-collision groove (21), two ends of each anti-collision spring (19) are fixedly connected with the anti-collision wood block (15) and the anti-collision plate (20) respectively, loop bars (26) are symmetrically arranged in the anti-collision groove (21), slide bars (29) are slidably connected in the loop bars (26), pushing springs (27) are arranged in the loop bars (26), two ends of each pushing spring (27) are fixedly connected with the loop bars (26) and the slide bars (29) respectively, limiting blocks (24) are symmetrically arranged in the anti-collision groove (21), and one ends, far away from the pushing springs (27), of the slide bars (29), penetrate through the loop bars (26 And (4) fixedly connecting.
3. The folding mechanism for the support leg transition of the bridge girder erection machine according to claim 1, wherein two side walls of the anti-collision groove (21) are symmetrically provided with slide rails (22), the slide rails (22) are connected with lugs (25) in a sliding manner, one ends of the lugs (25) are fixedly connected with one ends of loop bars (26) far away from a slide bar (29), the slide rails (22) are internally provided with telescopic springs (23), and two ends of the telescopic springs (23) are respectively fixedly connected with the anti-collision wood blocks (15) and the lugs (25).
4. The leg transition folding mechanism of the bridge girder erection machine according to claim 1, wherein sliding grooves (18) are symmetrically formed on two side walls of the anti-collision groove (21), sliding blocks (17) are symmetrically fixed at two ends of the anti-collision plate (20), and the sliding blocks (17) are slidably connected in the sliding grooves (18).
5. A folding mechanism for a support leg transition of a bridge erecting machine according to claim 2, wherein a baffle (28) is arranged in the sleeve rod (26), the baffle (28) is fixedly connected with one end of the sliding rod (29) arranged in the sleeve rod (26), and one end of the baffle (28) far away from the sliding rod (29) is fixedly connected with the end of the pushing spring (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990189.6A CN110607760B (en) | 2019-10-17 | 2019-10-17 | Landing leg transition folding mechanism of bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990189.6A CN110607760B (en) | 2019-10-17 | 2019-10-17 | Landing leg transition folding mechanism of bridge girder erection machine |
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| Publication Number | Publication Date |
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| CN110607760A true CN110607760A (en) | 2019-12-24 |
| CN110607760B CN110607760B (en) | 2024-06-18 |
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| CN201910990189.6A Active CN110607760B (en) | 2019-10-17 | 2019-10-17 | Landing leg transition folding mechanism of bridge girder erection machine |
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| CN211312213U (en) * | 2019-10-17 | 2020-08-21 | 合肥正浩机械科技有限公司 | Landing leg transition folding mechanism of bridge girder erection machine |
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