CN215976895U - Self-balancing type inverted T-shaped front auxiliary supporting leg of three-leg bridge girder erection machine - Google Patents
Self-balancing type inverted T-shaped front auxiliary supporting leg of three-leg bridge girder erection machine Download PDFInfo
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- CN215976895U CN215976895U CN202121499327.XU CN202121499327U CN215976895U CN 215976895 U CN215976895 U CN 215976895U CN 202121499327 U CN202121499327 U CN 202121499327U CN 215976895 U CN215976895 U CN 215976895U
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Abstract
The utility model discloses a self-balancing inverted T-shaped front auxiliary supporting leg of a three-leg bridge girder erection machine, which comprises an outer suspension device and an anchoring device, wherein the outer suspension device is inverted T-shaped, the upper end of the outer suspension device is connected with the front end of a main cross beam, one end of the bottom of the outer suspension device is arranged at the edge of a table top of a bridge pier, the rest part of the outer suspension device is suspended outside the bridge pier, the table top at the other end of the bridge pier is provided with the anchoring device, the anchoring device connects and fixes the outer suspension device through a fine-rolling screw steel, and the outer suspension device comprises a vertical upright post, an extending beam and a locking device. The utility model has the advantages of simple structure, safe and convenient installation, high efficiency, saving of reserved anchoring twisted steel bars on the tops of piers, reduction of materials used for anchoring, reduction of troubles brought by welding, reduction of cost of using a crane, reduction of cost, improvement of construction efficiency, and high practicability, safety and reliability.
Description
Technical Field
The utility model relates to the technical field of bridge engineering machinery, in particular to a self-balancing inverted T-shaped front auxiliary supporting leg of a three-leg bridge girder erection machine.
Background
A bridge girder erection machine is a hoisting device for constructing a viaduct, namely a device for placing a prefabricated pavement bridge block on a bridge pier, generally a three-leg bridge girder erection machine, wherein an advancing through hole of the bridge girder erection machine is a walking self-passing through hole, when the bridge girder erection machine advances through the advancing through hole, a main cross beam drives a front auxiliary leg to pass over the bridge pier in front, then the main cross beam is fixed, a middle main leg can move relative to the main cross beam, the middle main leg slides to the bridge pier of the front auxiliary leg, the middle main leg and the front auxiliary leg need to simultaneously stand in the front half of the bridge pier, an installation space is reserved for the transported pavement bridge block, the width of the bridge pier surface cannot meet the requirement of the simultaneous standing space of the middle main leg and the front auxiliary leg, the front auxiliary leg exceeds the bridge pier and cannot stand above the bridge pier, a finish rolling threaded reinforcing steel bar needs to be prepared for the original J-shaped front auxiliary leg to be anchored with the bridge pier, the steel bars are embedded in the tops of all piers, prepared fine-rolling threaded steel bars are welded with the embedded steel bars in the tops of the piers before the bridge girder erection machine passes through the holes, and the piers are cut off after the passing through the holes, so that trouble and waste are caused. And because the different overhanging distances of the bridge pier are different, the larger the overhanging distance is, the larger the required anchoring force is, the larger the diameter and the more the quantity of the steel bars to be embedded on the top of the bridge pier are, the more the prepared fine-rolled twisted steel bars are, in order to save the fussy operation process and the waste of the steel bars which need to be reserved on the top of each hole of the bridge pier, the self-balancing inverted T-shaped front auxiliary supporting leg of the three-leg bridge girder erection machine is designed, which is not only simple and convenient to operate, but also does not need to embed the anchoring steel bars on the top of the bridge pier.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a self-balancing inverted T-shaped front auxiliary supporting leg of a three-leg bridge girder erection machine, which solves the problems of trouble and high cost caused by welding of a reserved steel bar on the top of a bridge pier and an anchored finish rolling threaded steel bar.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model relates to a self-balancing inverted-T-shaped front auxiliary supporting leg of a three-leg bridge girder erection machine, which comprises an outer suspension device and an anchoring device, wherein the outer suspension device is inverted-T-shaped, the upper end of the outer suspension device is connected to the front end of a main cross beam, one end of the bottom of the outer suspension device is installed at the edge position of a table top of a bridge pier, the rest part of the outer suspension device is suspended outside the bridge pier, the table top at the other end of the bridge pier is provided with the anchoring device, and the anchoring device connects and fixes the outer suspension device through a second fine-binding threaded steel bar.
Further, the overhang device includes perpendicular stand, overhanging beam and locking device, the upper end of perpendicular stand is connected on main beam through last free bearing, and the lower extreme of perpendicular stand is connected on the overhanging beam through lower free bearing and is close to the intermediate position, the one end of overhanging beam is passed through anchor and is connected on the pier, the other end of overhanging beam with locking device's lower extreme is connected, locking device's upper end and the articulated connection of last compensating beam at perpendicular stand top.
Furthermore, the vertical upright posts comprise telescopic upright posts and a heightening frame device, the telescopic upright posts comprise upper balance beams, telescopic upright posts and jacking oil cylinders, the tops of the upper balance beams are connected to the main cross beam through upper hinged supports, outer telescopic sleeves are arranged on the upper balance beams, the tops of the telescopic upright posts are embedded into the outer telescopic sleeves and fixed through pin shafts, the jacking beams are arranged at the middle positions of the two telescopic upright posts, the upper ends of the jacking oil cylinders are connected with the upper balance beams, working rods at the lower ends of the jacking oil cylinders are connected with the jacking beams, a plurality of through holes for pin shaft positioning are uniformly distributed on the telescopic upright posts, and a through hole for pin shaft positioning is arranged on the outer telescopic sleeves of the upper balance beams; increase a device and include the stand tie-beam and increase the frame, stand tie-beam upper end is connected with the lower extreme of flexible stand, stand tie-beam lower extreme is connected with increase the frame, it is provided with the crossbeam to increase both ends about the frame, and the bottom that increases the frame is articulated with the outrigger.
Furthermore, the one end of the overhanging beam is connected to the middle two sides of the edge of the pier table through a spherical hinge, the vertical side wall of the overhanging beam is tightly propped against the side face of the pier, rubber is arranged at the contact part of the vertical side wall of the overhanging beam and the side face of the pier, the two split bodies of the overhanging beam are connected together through a plurality of cross beams, and one cross beam at the end part is connected with the anchoring device through a group of second fine-binding threaded steel bars.
Furthermore, a first fine-rolled twisted steel bar with adjustable length is arranged on the locking device, the upper end of the locking device is hinged to the bottom of the upper balance beam, the lower end of the locking device is hinged to the outer end of the overhanging beam, a lead screw with adjustable length is arranged at the lower end of the locking device, and the overhanging beam is provided with an operable platform.
Furthermore, the anchoring device is arranged close to the roots of the two supporting cushion stones of the bridge pier.
Furthermore, the jacking oil cylinder adopts an independent hydraulic station.
Furthermore, the vertical upright columns, the overhanging beams, the locking devices and the anchoring devices are symmetrically arranged along the center line of the pier.
Compared with the prior art, the utility model has the beneficial technical effects that:
the self-balancing inverted T-shaped front auxiliary supporting leg of the three-supporting-leg bridge girder erection machine comprises an outer suspension device used as a main support and an anchoring device used for fixing, and the anchoring device is added to the front auxiliary supporting leg, so that the complicated flow of pre-embedded steel bars and anchoring and welding finish rolling threaded steel bars is avoided, the process is simplified, the cost is reduced, the anchoring device is arranged on the table top of a bridge pier and clings to the bridge pier to support the cushion stone, the space is saved, the operation is convenient, and the construction is not influenced. The outer suspension device is a stable structure formed by the locking devices, the height of the vertical upright posts can be adjusted, the overhanging beam is in spherical hinge with the pier surface, and stable vertical support can be ensured even when the bridge surface is not level.
Drawings
The utility model is further illustrated in the following description with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top view of the present invention;
description of reference numerals: 1. an upper hinged support; 2. an upper balance beam; 3. a jacking oil cylinder; 4. pushing the beam; 5. a telescopic upright post; 6. the upright posts are connected with the beam; 7. heightening; 8. an overhanging beam; 9. an anchoring device; 10. a lower hinged support; 11. a locking device; 12. first fine-rolled twisted steel bars; 13. rubber; 14. a bridge pier; 15. and a second fine-rolled twisted steel bar.
Detailed Description
As shown in figure 1, the self-balancing type inverted T-shaped front auxiliary supporting leg of the three-leg bridge girder erection machine comprises an outer suspension device and an anchoring device 9, wherein the outer suspension device is in an inverted T shape, the upper end of the outer suspension device is connected to the front end of a main cross beam, one end of the bottom of the outer suspension device is installed at the edge position of a table top of a pier 14, the rest part of the outer suspension device is suspended outside the pier, the anchoring device 9 is installed on the table top of the other end of the pier 14, and the anchoring device 9 is connected and fixed with the outer suspension device through a second fine-binding threaded steel bar 15. Preceding auxiliary leg is the type of falling T and connects at 14 edges of pier, reduces the space and occupies, leaves abundant space for well main leg, and rethread anchor 9 is fixed, does not need the anchor finish rolling twisted steel, has removed welding, the process of cutting away from, anchor 9 can also use repeatedly, and easy operation is convenient.
The outer suspension device comprises a vertical upright post, an overhanging beam 8 and a locking device 11, the upper end of the vertical upright post is connected to the main cross beam through an upper hinged support 1, the lower end of the vertical upright post is connected to the overhanging beam 8 through a lower hinged support 10 and is close to the middle position, one end of the overhanging beam 8 is connected to the pier 14 through an anchoring device 9, the other end of the overhanging beam 8 is connected to the lower end of the locking device 11, and the upper end of the locking device 11 is hinged to an upper balance beam 2 at the top of the vertical upright post. The vertical column is made to bear definite stress through an upper hinged and a lower hinged connecting structure, and the front auxiliary supporting leg is stably connected with the pier through the lower extending beam 8 through the locking device 11 and the anchoring device 9.
The vertical upright posts comprise telescopic upright posts and a heightening frame device, the telescopic upright posts comprise an upper balance beam 2, telescopic upright posts 5 and a jacking oil cylinder 3, the top of the upper balance beam 2 is connected to a main cross beam through an upper hinged support 1, an outer telescopic sleeve is arranged on the upper balance beam 2, the tops of the telescopic upright posts 5 are embedded into the outer telescopic sleeve and fixed through pin shafts, a jacking beam 4 is arranged at the middle position of each telescopic upright post 5, the upper end of the jacking oil cylinder 3 is connected with the upper balance beam 2, a working rod at the lower end of the jacking oil cylinder 3 is connected with the jacking beam 4, a plurality of through holes for pin shaft positioning are uniformly distributed on the telescopic upright posts 5, and a through hole for pin shaft positioning is arranged on the outer telescopic sleeve of the upper balance beam 2; it includes stand tie-beam 6 and increases a 7 to increase a device, 6 upper ends of stand tie-beam are connected with the lower extreme of flexible stand 5, 6 lower extremes of stand tie-beam are connected with increase a 7, it is provided with the crossbeam to increase both ends about a 7, and it is articulated with overhanging beam 8 to increase the bottom of a 7. The jacking cylinder 3 is used for adjusting the height of the front auxiliary supporting leg, when the jacking cylinder 3 stretches, power is applied to the jacking beam 4 to drive the telescopic upright post 5 to stretch out and retract in the outer telescopic sleeve of the balance beam 2, so that the supporting height of the vertical upright post is changed, when the height of the vertical upright post is adjusted, the pin shaft is in a pull-out state, the pin shaft must be inserted after the adjustment is finished and used for supporting the front auxiliary supporting leg, the heightening frame device is an extension section of the lower end of the telescopic upright post 5, when a last hole bridge is erected and construction needs to be carried out on a beam surface or a roadbed, the heightening frame device needs to be detached, and the front auxiliary supporting leg can be supported by the telescopic upright post 5.
The one end of the overhanging beam 8 is connected to the middle two sides of the edge of the pier table through a spherical hinge, the vertical side wall of the overhanging beam 8 is tightly propped against the side surface of the pier 14, the contact part of the vertical side wall of the overhanging beam 8 and the side surface of the pier 14 is provided with rubber 13, two split bodies of the overhanging beam 8 are connected together through a plurality of cross beams, and one cross beam at the end part is connected with the anchoring device 9 through a group of second fine-rolled threaded steel bars 15. The overhanging beam 8 is connected to the bridge pier in a spherical hinge mode, so that stable support can be guaranteed when the bridge deck is not flat, and in order to avoid damage to the bridge pier, the side face of the overhanging beam 8 is made of rubber 13.
The adjustable-length screw-thread steel bar fixing device is characterized in that a first fine-rolled threaded steel bar 12 with adjustable length is arranged on the locking device 11, the upper end of the locking device 11 is hinged to the bottom of the upper balance beam 2, the lower end of the locking device 11 is hinged to the outer end of the overhanging beam 8, a lead screw with adjustable length is arranged at the lower end of the locking device 11, and the overhanging beam 8 is provided with an operable platform. An operable platform is arranged on the upper edge of the extending beam 8, the length of the locking device 11 can be adjusted, and the requirements of different telescopic upright columns 5 in height can be met.
The anchoring device 9 is arranged close to the roots of two supporting cushion stones of the pier 14. The anchor device 9 and the overhanging beam 8 stride over the pier supporting cushion and are connected through the fine-rolled thread reinforcing steel, the overhanging beam 8 interacts with the anchor device 9 through the locking device 11 to complete the supporting function of the vertical column, and the integral automatic balance of the front auxiliary supporting leg is realized and the front auxiliary supporting leg is stably supported with the pier.
The jacking oil cylinder 3 adopts an independent hydraulic station. The hydraulic station is installed on a platform of a front beam of the main beam, and operation is convenient.
The vertical columns, the overhanging beams 8, the locking devices 11 and the anchoring devices 9 are symmetrically arranged along the center line of the pier 14.
The action process of the utility model is as follows:
during site operation, the outer suspension device of the front auxiliary supporting leg moves to extend to the edge of the front pier table top along with the main cross beam, the inner end ball of the extension beam 8 is hinged to the pier table top, the anchoring device 9 is fixed to the other side of the pier table top, the anchoring device 9 and the extension beam 8 are connected through 2 finish-rolled threaded steel bars, installation and fixation of the outer suspension device are completed, and then the next construction process is carried out.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, which is defined by the claims.
Claims (8)
1. The utility model provides a supplementary landing leg before three landing leg frame bridge crane's self-balancing type of falling T type which characterized in that: including outer suspension and anchor (9), outer suspension is the type of falling T, and outer suspension's upper end is connected in main beam front end position, and the mesa border position at pier (14) is installed to outer suspension's bottom one end, and the rest of outer suspension hangs outside the pier, anchor (9) are installed to the other end mesa of pier (14), anchor (9) will through second smart bundle twisted steel (15) outer suspension is connected fixedly.
2. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 1, wherein: the outer suspension device comprises a vertical upright post, an overhanging beam (8) and a locking device (11), wherein the upper end of the vertical upright post is connected to the main cross beam through an upper hinged support (1), the lower end of the vertical upright post is connected to the overhanging beam (8) through a lower hinged support (10) and is close to the middle position, one end of the overhanging beam (8) is connected to the pier (14) through an anchoring device (9), the other end of the overhanging beam (8) is connected to the lower end of the locking device (11), and the upper end of the locking device (11) is hinged to the upper balance beam (2) at the top of the vertical upright post.
3. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 2, wherein: the vertical upright posts comprise telescopic upright posts and a heightening frame device, the telescopic upright posts comprise an upper balance beam (2), telescopic upright posts (5) and jacking oil cylinders (3), the tops of the upper balance beam (2) are connected to a main cross beam through upper hinged supports (1), outer telescopic sleeves are arranged on the upper balance beam (2), the tops of the telescopic upright posts (5) are embedded into the outer telescopic sleeves and fixed through pin shafts, the jacking beams (4) are arranged in the middle positions of the two telescopic upright posts (5), the upper ends of the jacking oil cylinders (3) are connected with the upper balance beam (2), the lower end working rods of the jacking oil cylinders (3) are connected with the jacking beams (4), a plurality of through holes for pin shaft positioning are uniformly distributed on the telescopic upright posts (5), and one through hole for pin shaft positioning is arranged on the outer telescopic sleeves of the upper balance beam (2); increase a device and include stand tie-beam (6) and increase frame (7), stand tie-beam (6) upper end is connected with the lower extreme of flexible stand (5), stand tie-beam (6) lower extreme is connected with increase frame (7), it is provided with the crossbeam to increase both ends about frame (7), and the bottom that increases frame (7) is articulated with outrigger (8).
4. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 3, wherein: the one end of outrigger (8) is passed through the ball pivot and is connected on pier mesa edge middle both sides position to the vertical lateral wall and the pier (14) side top of outrigger (8) are tight, and the vertical lateral wall and the pier (14) side contact site of outrigger (8) are provided with rubber (13), link together through a plurality of crossbeams between two components of a whole that can function independently of outrigger (8), be located the tip a crossbeam with anchor device (9) link together through a set of second smart twisted steel (15).
5. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 2, wherein: the adjustable-length steel bar binding machine is characterized in that a first fine-rolling threaded steel bar (12) with adjustable length is arranged on the locking device (11), the upper end of the locking device (11) is hinged to the bottom of the upper balance beam (2), the lower end of the locking device (11) is hinged to the outer end of the overhanging beam (8), a lead screw with adjustable length is arranged at the lower end of the locking device (11), and the overhanging beam (8) is provided with an operable platform.
6. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 1, wherein: the anchoring device (9) is arranged close to the roots of the two supporting cushion stones of the pier (14).
7. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 3, wherein: the jacking oil cylinder (3) adopts an independent hydraulic station.
8. The self-balancing inverted-T front auxiliary leg of a three-leg bridge girder erection machine according to claim 2, wherein: the vertical upright columns, the overhanging beams (8), the locking devices (11) and the anchoring devices (9) are symmetrically arranged along the center line of the pier (14).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121499327.XU CN215976895U (en) | 2021-07-03 | 2021-07-03 | Self-balancing type inverted T-shaped front auxiliary supporting leg of three-leg bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121499327.XU CN215976895U (en) | 2021-07-03 | 2021-07-03 | Self-balancing type inverted T-shaped front auxiliary supporting leg of three-leg bridge girder erection machine |
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| CN215976895U true CN215976895U (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855623A (en) * | 2022-05-13 | 2022-08-05 | 中交二航局第二工程有限公司 | Front supporting leg auxiliary standing position device and method for section-splicing bridge girder erection machine |
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2021
- 2021-07-03 CN CN202121499327.XU patent/CN215976895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855623A (en) * | 2022-05-13 | 2022-08-05 | 中交二航局第二工程有限公司 | Front supporting leg auxiliary standing position device and method for section-splicing bridge girder erection machine |
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