CN212641237U - Front supporting leg supporting and limiting device of bridge girder erection machine - Google Patents
Front supporting leg supporting and limiting device of bridge girder erection machine Download PDFInfo
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- CN212641237U CN212641237U CN202021198173.6U CN202021198173U CN212641237U CN 212641237 U CN212641237 U CN 212641237U CN 202021198173 U CN202021198173 U CN 202021198173U CN 212641237 U CN212641237 U CN 212641237U
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Abstract
The utility model provides a landing leg supports and stop device before bridge crane, including preceding landing leg, be equipped with a plurality of support steel drums on the preceding landing leg, be equipped with fixed pull rod between a plurality of support steel drums, it has the bent cap to support the steel drum lower part support, the bent cap both ends are equipped with the dog, be equipped with vertical stop device between preceding landing leg and the bent cap, be equipped with horizontal stop device between preceding landing leg and the dog, it still is equipped with the hole for hoist to support the steel drum, preceding landing leg still is equipped with the couple to hoist and mount support the steel drum and transport the removal. The utility model discloses a customization steel drum has reduced the sleeper multilayer and has set up the problem as bearing structure, and the construction is simple and convenient, and is fast, and stability is good, and maneuverability is strong, and vertical and horizontal stop device of preceding landing leg track through setting up guarantees that the stability of bridge girder erection machine operation in-process is firm.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering T roof beam installation and specifically relates to a landing leg supports and stop device and installation method before frame bridge crane.
Background
Along with further deepening of ecological civilization construction, the occupation of basic farmlands and woodlands is required to be reduced as far as possible while the linearity of highway construction is guaranteed to meet the national standard, the situation that bridges are arranged on mountain road curves at the present stage is more and more common, most of roads with smaller radiuses are located at ultrahigh paragraphs, so that the cross slope of T-beam installation is large, research is carried out on a front supporting leg supporting system of a bridge girder erection machine, a blank area of temporary structure control between a bridge girder erection machine manufacturer and a construction site is reasonably filled, site standardized construction can be scientifically guided, the safety coefficient of the bridge girder erection machine can be effectively improved by adding a limiting device, a larger risk item in the stability of the construction process of the bridge girder erection machine is eliminated, a set of mature construction method is formed, and the subsequent safe.
The support pad of the front support leg rail of the bridge girder erection machine usually adopts a multilayer sleeper support pad, the sleeper support pad mainly takes 20 cm-20 cm square miscellaneous trees as main materials, in order to ensure the rail level in the girder erection process, because two ends of the bottom of the rail are placed above the stop blocks, the sleeper is not only responsible for designing transverse slope leveling, but also responsible for leveling the height difference between the top surface of the cover beam and the top surface of the stop blocks, the highest point leveling height is far greater than 3 layers of sleepers, the multilayer sleepers cause poor stability of the structure, in addition, the number of moved sleepers is large, the working strength is high, and the like.
Chinese patent CN102296536A a landing leg bearing structure before frame bridge crane, two stands that set up including the interval, top-down is provided with a plurality of stulls between two stands, the stand is cup jointed by a plurality of sections telescopic joint and is formed, has all seted up the altitude mixture control hole on the every stand, and cooperation altitude mixture control hole is provided with the pivot, just the one end of stand articulates on preceding, back entablature, is equipped with the free bearing on the other end and supports on the pad mound of bottom end rail, the hinge has the bracing telescopic link between the free bearing of the bottom of preceding entablature and stand, the bracing telescopic link is cup jointed by a plurality of sections telescopic joint and is formed, just a plurality of pinhole has been seted up on the telescopic joint, and the cooperation pinhole is provided with the bracing steel pin. The scheme has complicated structural connection, and mainly bears the action of forces in the transverse direction and the longitudinal direction through the hinged support on the stand column, the stress is too concentrated, and the service life of the hinged support directly influences the integral rigidity and bearing capacity.
Chinese patent CN106400699A is a front supporting leg supporting device for improving the stability of longitudinally moving through holes of a bridge girder erection machine. The device comprises a rear supporting device and a front supporting device, wherein one end of the rear supporting device, which is positioned behind a front supporting leg, is supported on a T-shaped beam through an L-shaped hinged support, the other end of the rear supporting device is supported on the front supporting leg provided with a plurality of rows of through holes with guide cylinders through hinges and threaded lead screws, the lower end of the front supporting leg in front of the front supporting leg is supported on a pier cap of a pier through a pad box, and the upper part of the front supporting device is fixedly connected with a front supporting leg transverse trolley through a lead screw or an oil. The rear supporting device and the front supporting device adjust the lengths of the rear supporting device and the front supporting device through relative rotation between threads or stretching of the oil cylinder, so that the relative position difference of each hole caused by T-shaped beams and pier manufacturing deviation and different standing positions of the front supporting legs is adapted, and effective supporting is guaranteed. The scheme structure needs the auxiliary of the erected T beam to install the hinged support, the structure is relatively complex, the transverse limit of the front supporting leg is lacked, and the integral bearing capacity is limited.
Chinese patent CN103147397A is a front leg diagonal bracing mechanism of a bridge girder erection machine and an installation method thereof, the front leg diagonal bracing mechanism of the bridge girder erection machine is positioned between a front leg of the bridge girder erection machine and an erected concrete beam and is used for fixing and supporting the front leg of the bridge girder erection machine on the erected concrete beam, and the front leg diagonal bracing mechanism of the bridge girder erection machine comprises a diagonal bracing rod, a binding chain, a front leg upright double-lug plate and a pin shaft; the diagonal brace further comprises: the lower section supporting rod, the upper end supporting rod, the upper and lower section supporting rod connecting and adjusting screw rods, the upper end connecting single lug plate, the lower end connecting single lug plate and the connecting shackle are arranged on the upper end and the lower end of the lower section supporting rod; the binding chain further comprises: the lifting chain, the turnbuckles connected with the two ends of the lifting chain, the upper wrap angle and the lower wrap angle of the concrete beam. The scheme has a relatively complex structure, lacks transverse limit on the front supporting leg, and needs to be continuously adjusted in the construction process, so that the overall construction efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides landing leg supports and stop device before set frame bridge crane, its one of them is solved and is adopted the customization steel drum as bearing structure, reduces the sleeper multilayer and sets up the problem, and the construction is simple and convenient, and is fast, and stability is good, and maneuverability is strong, and landing leg track is vertical and horizontal spacing before its two is add, provides enough stable stay guaranteeing the operation in-process of frame bridge crane. In addition, the mounting and connecting device utilizes the support leg track beam as a transportation carrier to transport the support structure to the next cycle stage operation quickly and efficiently.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a supporting and limiting device for a front supporting leg of a bridge girder erection machine comprises the front supporting leg, wherein a plurality of supporting steel barrels are arranged on the front supporting leg, fixed pull rods are arranged among the supporting steel barrels, a cover beam is arranged at the lower part of each supporting steel barrel, stop blocks are arranged at two ends of each cover beam, a longitudinal limiting device is arranged between the front supporting leg and the cover beam, and a transverse limiting device is arranged between the front supporting leg and the stop blocks;
the supporting steel drum is also provided with a hoisting hole;
the front supporting leg is also provided with a hook to hoist and support the steel drum for transportation and movement.
In a preferred embodiment, the supporting steel drum comprises a drum body, the drum body is provided with a first supporting plate and a second supporting plate, the plane of the first supporting plate is perpendicular to the drum body, the plane of the second supporting plate is not perpendicular to the drum body, the first supporting plate and the side wall of the drum body are provided with a first reinforcing rib plate, the second supporting plate and the side wall of the drum body are provided with a second reinforcing rib plate, the first reinforcing rib plate is provided with a first fixing hole, and the second reinforcing rib plate is provided with a second fixing hole.
In the preferred scheme, waist round holes are formed in two ends of the fixed pull rod.
In a preferred scheme, the longitudinal limiting device comprises first convex plates which are oppositely arranged, the first convex plates are provided with first through holes, the first through holes are connected with first supporting rods through screws, the first supporting rods are provided with a plurality of first height adjusting holes, the first supporting rods are sleeved with first sleeves, the first sleeves are provided with second through holes, the second through holes are connected with fixing pieces through screws, and the fixing pieces are provided with width adjusting devices.
In the preferred scheme, the longitudinal limiting device is further provided with a second supporting rod, one end of the second supporting rod is connected with the first supporting rod through a screw, and the other end of the second supporting rod is connected with the fixing piece through a screw.
In a preferred scheme, the width adjusting device comprises a clamping plate, the clamping plate is provided with a first threaded hole, the first threaded hole is connected with a lead screw, the lead screw comprises a first thread and a second thread, the first thread is the same as the first threaded hole in the turning direction, the second thread is opposite to the first thread in the turning direction, the second thread is connected with a limiting block through a second threaded hole, and the limiting block is connected with a fixing piece.
In the preferred scheme, the relative second raised plate that sets up of horizontal stop device, second raised plate are equipped with the third through-hole, the third through-hole has the third bracing piece through bolted connection, the third bracing piece is equipped with a plurality of second altitude mixture control holes, third bracing piece cover is equipped with the second sleeve, the second sleeve is equipped with the fourth through-hole, the fourth through-hole has the connecting plate through bolted connection, the connecting plate has set firmly closing device.
In the preferred scheme, the compressing device comprises a rotating nut, the rotating nut is in threaded connection with a screw, and a compressing block is arranged on the screw.
The utility model provides a landing leg supports and stop device before frame bridge crane, the beneficial effect of this patent is:
1. this structure sets up rationally, and is functional strong, adopts the customization steel drum as bearing structure, and fixed pull rod increases overall structure stability, reduces the sleeper multilayer and sets up the problem, and the construction is simple and convenient, and is fast, and stability is good, and maneuverability is strong.
2. The front supporting leg rail is additionally arranged to limit longitudinally and transversely, so that enough stable support is provided in the process of ensuring the operation of the bridge girder erection machine.
3. The mounting and connecting device utilizes the landing leg track beam as a transportation carrier to transport the supporting structure to the next cycle stage operation quickly and efficiently, the construction safety risk is lower, and the economic benefit is high.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the connection of the supporting steel drum of the present invention;
FIG. 3 is a front view of the longitudinal stop device of the present invention;
FIG. 4 is a right side view of the longitudinal stop device of the present invention;
FIG. 5 is a front view of the lateral stop device of the present invention;
FIG. 6 is a right side view of the lateral stop device of the present invention;
FIG. 7 is a schematic view of the support of the steel drum of the present invention;
in the figure: a front leg 1; supporting the steel drum 2; a barrel body 201; a first support plate 202; a second support plate 203; a first reinforcing rib 204; a second reinforcing rib 205; a first fixing hole 206; a second fixing hole 207; a fixed pull rod 3; a waist circular hole 301; a capping beam 4; a stopper 5; a longitudinal position-limiting device 6; a first raised plate 601; a first via 602; a first support rod 603; a first sleeve 604; a first height adjustment aperture 605; a second via 606; a fixing member 607; a second support bar 608; a transverse limiting device 7; a second cam plate 701; a third through hole 702; a third support bar 703; a second sleeve 704; a second height adjustment hole 705; a fourth through hole 706; a connecting plate 707; a hook 8; a width adjusting device 9; a clamping plate 901; a first threaded hole 902; a screw rod 903; a first thread 904; a second thread 905; a stopper 906; a second threaded hole 907; a pressing device 10; a rotating nut 1001; a screw 1002; and a compaction block 1003.
Detailed Description
As shown in fig. 1 to 7, a front leg supporting and limiting device of a bridge girder erection machine comprises a front leg 1, wherein a plurality of supporting steel barrels 2 are arranged on the front leg 1, fixed pull rods 3 are arranged between the supporting steel barrels 2, a cover beam 4 is arranged at the lower part of each supporting steel barrel 2, stop blocks 5 are arranged at two ends of each cover beam 4, a longitudinal limiting device 6 is arranged between the front leg 1 and the cover beam 4, and a transverse limiting device 7 is arranged between the front leg 1 and the stop blocks 5;
the supporting steel drum 2 is also provided with a hoisting hole;
the front supporting leg 1 is also provided with a hook 8 to hoist and support the steel drum 2 for transportation and movement. The supporting steel drum 2 is made of seamless steel pipes, the height of the supporting steel drum is 2cm lower than that of the bent cap stop blocks, 1cm thick steel plates are arranged on the upper portion and the lower portion of the supporting steel drum 2 respectively and welded to form the supporting steel drum, 8 steel plates which are evenly distributed by 5cm and 10cm are used as reinforcing rib plates at contact points of the welded steel plates and the seamless steel pipes, and the fixed pull rod 3 is made of 30mm flat steel with the thickness of 5 mm. The structure of the front supporting leg 1 and the cover beam 4 is utilized to arrange the longitudinal limiting device 6 and the transverse limiting device 7, so that the structure ensures the stability of the integral support and has certain overturn resistance.
In a preferable scheme, the supporting steel drum 2 includes a drum body 201, the drum body 201 is provided with a first supporting plate 202 and a second supporting plate 203, a plane of the first supporting plate 202 is perpendicular to the drum body 201, a plane of the second supporting plate 203 is not perpendicular to the drum body 201, the first supporting plate 202 and a side wall of the drum body 201 are provided with a first reinforcing rib 204, the second supporting plate 203 and a side wall of the drum body 201 are provided with a second reinforcing rib 205, the first reinforcing rib 204 is provided with a first fixing hole 206, and the second reinforcing rib 204 is provided with a second fixing hole 207. From this structure, support 2 one ends of steel drum and adopt the flat mouthful, one end adopts the slant incision, forms reverse wedge structure with bent cap 4 self transverse slope and levels, guarantees the vertical atress of steel drum.
In a preferred scheme, waist round holes 301 are arranged at two ends of the fixed pull rod 3. With the structure, the fixing pull rod 3 and the supporting steel barrel 2 can be quickly installed and adjusted through screws.
In a preferable scheme, the longitudinal limiting device 6 comprises first convex plates 601 which are oppositely arranged, the first convex plates 601 are provided with first through holes 602, the first through holes 602 are connected with first supporting rods 603 through screws, the first supporting rods 603 are provided with a plurality of first height adjusting holes 605, the first supporting rods 603 are sleeved with first sleeves 604, the first sleeves 604 are provided with second through holes 606, the second through holes 606 are connected with fixing pieces 607 through screws, and the fixing pieces 607 are provided with width adjusting devices 9. The fixing piece 607 is welded into a U shape by channel steel, and the width adjusting device 9 is located on the side wall of at least 30cm below the plane of the bent cap. By the structure, the front supporting leg 1 is fixed, so that the longitudinal stability and the limiting are realized.
In a preferable embodiment, the longitudinal limiting device 6 is further provided with a second supporting rod 608, one end of the second supporting rod 608 is connected with the first supporting rod 603 through a screw, and the other end of the second supporting rod 608 is connected with the fixing member 607 through a screw. With the structure, the second support rod 608 is adjusted to enable the support to be firm, so that the balance of overall stress is guaranteed, and the structure is stable.
In a preferable scheme, the width adjusting device 9 includes a clamping plate 901, the clamping plate 901 is provided with a first threaded hole 902, the first threaded hole 902 is connected with a lead screw 903, the lead screw 903 includes a first thread 904 and a second thread 905, the first thread 904 and the first threaded hole 902 have the same rotating direction, the second thread 905 and the first thread 904 have the opposite rotating direction, the second thread 905 is connected with a limiting block 906 through the second threaded hole 907, and the limiting block 906 is connected with the fixing block 607. Due to the structure, the cover beam has good universality for cover beams 4 with different widths, the limit blocks 906 are more firmly abutted against the side walls of the cover beams 4 by adjusting the screw rods 903, and the whole longitudinal support is stable.
In a preferred embodiment, the second cam plate 701 is arranged opposite to the transverse limiting device 7, the second cam plate 701 is provided with a third through hole 702, the third through hole 702 is connected with a third supporting rod 703 through a screw, the third supporting rod 703 is provided with a plurality of second height adjusting holes 705, the third supporting rod 703 is sleeved with a second sleeve 704, the second sleeve 704 is provided with a fourth through hole 706, the fourth through hole 706 is connected with a connecting plate 707 through a screw, and the connecting plate 707 is fixedly provided with the pressing device 10. The second height adjusting hole 705 can conveniently adjust the overall height of the transverse limiting device 7 to adapt to the situation that the height difference between the front supporting leg 1 and the stop block 5 is different under different bridge spans, so that the transverse supporting limiting device 7 is convenient to install, and the transverse limiting of the front supporting leg 1 is firm.
In a preferred embodiment, the pressing device 10 includes a rotating nut 1001, the rotating nut 1001 is connected with a screw 1002 through a thread, and a pressing block 1003 is disposed on the screw 1002. From this structure, through adjusting screw 1002 to make compact heap 1003 effective contact and support by dog 5, guaranteed the horizontal spacing of preceding landing leg 1, stable in structure when having guaranteed preceding landing leg 1 atress.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (8)
1. The utility model provides a landing leg supports and stop device before frame bridge crane, characterized by: the supporting device comprises front supporting legs (1), wherein a plurality of supporting steel drums (2) are arranged on the front supporting legs (1), fixed pull rods (3) are arranged among the supporting steel drums (2), cover beams (4) are arranged on the lower portions of the supporting steel drums (2), stop blocks (5) are arranged at two ends of each cover beam (4), a longitudinal limiting device (6) is arranged between each front supporting leg (1) and each cover beam (4), and a transverse limiting device (7) is arranged between each front supporting leg (1) and each stop block (5);
the supporting steel drum (2) is also provided with a hoisting hole;
the front supporting leg (1) is also provided with a hook (8) for lifting and supporting the steel drum (2) to transport and move.
2. The front leg supporting and limiting device of the bridge girder erection machine according to claim 1, wherein: the supporting steel barrel (2) comprises a barrel body (201), a first supporting plate (202) and a second supporting plate (203) are arranged on the barrel body (201), the plane of the first supporting plate (202) is perpendicular to the barrel body (201), the plane of the second supporting plate (203) is not perpendicular to the barrel body (201), a first reinforcing rib plate (204) is arranged on the first supporting plate (202) and the side wall of the barrel body (201), a second reinforcing rib plate (205) is arranged on the second supporting plate (203) and the side wall of the barrel body (201), a first fixing hole (206) is formed in the first reinforcing rib plate (204), and a second fixing hole (207) is formed in the second reinforcing rib plate (205).
3. The front leg supporting and limiting device of the bridge girder erection machine according to claim 1, wherein: waist round holes (301) are arranged at two ends of the fixed pull rod (3).
4. The front leg supporting and limiting device of the bridge girder erection machine according to claim 1, wherein: vertical stop device (6) is including relative first lug plate (601) that sets up, first lug plate (601) is equipped with first through-hole (602), first through-hole (602) have first bracing piece (603) through screw connection, first bracing piece (603) are equipped with a plurality of first altitude mixture control holes (605), first bracing piece (603) cover is equipped with first sleeve (604), first sleeve (604) are equipped with second through-hole (606), second through-hole (606) have mounting (607) through screw connection, mounting (607) are equipped with width adjusting device (9).
5. The front leg supporting and limiting device of the bridge girder erection machine according to claim 4, wherein: the longitudinal limiting device (6) is further provided with a second supporting rod (608), one end of the second supporting rod (608) is connected with the first supporting rod (603) through a screw, and the other end of the second supporting rod (608) is connected with the fixing piece (607) through a screw.
6. The front leg supporting and limiting device of the bridge girder erection machine according to claim 4, wherein: the width adjusting device (9) comprises a clamping plate (901), the clamping plate (901) is provided with a first threaded hole (902), the first threaded hole (902) is connected with a screw rod (903), the screw rod (903) comprises a first thread (904) and a second thread (905), the rotating directions of the first thread (904) and the first threaded hole (902) are the same, the rotating directions of the second thread (905) and the first thread (904) are opposite, the second thread (905) is connected with a limiting block (906) through the second threaded hole (907), and the limiting block (906) is connected with a fixing piece (607).
7. The front leg supporting and limiting device of the bridge girder erection machine according to claim 1, wherein: second raised plate (701) that horizontal stop device (7) set up relatively, second raised plate (701) are equipped with third through-hole (702), third through-hole (702) have third bracing piece (703) through bolted connection, third bracing piece (703) are equipped with a plurality of second altitude mixture control holes (705), third bracing piece (703) cover is equipped with second sleeve (704), second sleeve (704) are equipped with fourth through-hole (706), fourth through-hole (706) have connecting plate (707) through screwed connection, closing device (10) have set firmly in connecting plate (707).
8. The front leg supporting and limiting device of the bridge girder erection machine according to claim 7, wherein: the pressing device (10) comprises a rotating nut (1001), the rotating nut (1001) is in threaded connection with a screw (1002), and a pressing block (1003) is arranged on the screw (1002).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021198173.6U CN212641237U (en) | 2020-06-24 | 2020-06-24 | Front supporting leg supporting and limiting device of bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021198173.6U CN212641237U (en) | 2020-06-24 | 2020-06-24 | Front supporting leg supporting and limiting device of bridge girder erection machine |
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| CN212641237U true CN212641237U (en) | 2021-03-02 |
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| CN202021198173.6U Active CN212641237U (en) | 2020-06-24 | 2020-06-24 | Front supporting leg supporting and limiting device of bridge girder erection machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691307A (en) * | 2020-06-24 | 2020-09-22 | 中交第二航务工程局有限公司 | Front support leg supporting and limiting device of bridge girder erection machine and mounting method |
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2020
- 2020-06-24 CN CN202021198173.6U patent/CN212641237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691307A (en) * | 2020-06-24 | 2020-09-22 | 中交第二航务工程局有限公司 | Front support leg supporting and limiting device of bridge girder erection machine and mounting method |
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