CN110438890B - Supporting construction of bridge - Google Patents

Abstract

The invention discloses a supporting structure of a bridge, which relates to the technical field of bridge supporting, and adopts the technical scheme that the supporting structure comprises a main beam and piers, wherein a plurality of supporting frames are arranged between the piers, a first supporting device is arranged between each supporting frame and each pier, and a second supporting device is arranged between every two adjacent supporting frames; the first supporting device comprises a precast slab and a plurality of groups of supporting mechanisms; each group of supporting mechanisms comprises a driving motor, a horizontal shaft, a plurality of screw rods and a driving assembly; each screw rod is in threaded connection with a sleeve, the top of the sleeve is fixedly connected with a supporting and protecting plate, and the top of the prefabricated plate is provided with a guide assembly; the bottom of the main beam is provided with a supporting plate, the bottom of the supporting plate is fixedly connected with a connecting plate, a mounting groove is formed in the connecting plate, a plug board is connected in the mounting groove in a sliding mode, and a plurality of groups of first reset assemblies are arranged in the mounting groove; the opposite inner sides of the supporting and protecting plate and the inserting plate are respectively provided with a first inclined plane; one side of the supporting guard plate is provided with a strip-shaped slot; a fixing mechanism is arranged in the supporting plate.

Description

Supporting construction of bridge

Technical Field

The invention relates to the technical field of bridge support, in particular to a support structure of a bridge.

Background

The main beam is generally a structure that is erected on rivers, lakes and seas to allow vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, the main beam is also extended to a building which spans mountain stream, unfavorable geology or meets other traffic requirements and is erected to enable the traffic to be more convenient. The main beam generally consists of an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge structure and is a main structure for crossing obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.

In the prior art, reference can be made to a Chinese patent application with an authorization publication number of CN110004819A, which discloses a girder and pier fixed connection structure of a long-span girder and a construction method thereof, wherein the girder and pier fixed connection structure comprises a prefabricated girder and pier, the pier is of a steel structure, and the girder and the pier are connected together through bolts; the welding of pier upper end has lower flange dish, the girder downside is provided with the last ring flange that is located lower flange dish upside, set up on the girder with the hole of last ring flange upper bolt hole one-to-one, the bolt is locked by the nut that is located lower flange dish downside after down passing hole, upper flange dish and lower flange dish in proper order from top to bottom. According to the girder and pier fixed connection structure of the large-span girder, the bridge piers are connected into a whole through the flange plates and the bolts, the integrity and rigidity transition of the structure can be well realized, the girder and the bridge piers cannot have stress concentration phenomenon or bridge pier deviation and other diseases in the using process, the connection between the girder and the bridge piers is strengthened, the bearing capacity of the girder and the bridge piers is improved, and the anti-seismic performance of the girder is enhanced.

However, since the protection device is not provided on the main beam, the main beam is easily deformed under long-term rolling of the vehicle, which may shorten the service life of the main beam.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a supporting structure of a bridge, which can play a certain protection role on a main beam by arranging a protection device, so that the service life of the main beam can be prolonged.

In order to achieve the purpose, the invention provides the following technical scheme: a supporting structure of a bridge comprises a girder and piers, wherein a plurality of supporting frames for supporting the girder are arranged between the piers, a first supporting device for supporting the girder is arranged between each supporting frame and each pier, and a second supporting device which is used for supporting the girder and has the same structure as the first supporting device is arranged between every two adjacent supporting frames; the first supporting device comprises a precast slab and a plurality of groups of supporting mechanisms, wherein two ends of the precast slab are fixedly connected to the opposite inner sides of the bridge pier and the supporting frame respectively and are horizontally arranged, and the plurality of groups of supporting mechanisms are sequentially arranged at the top of the precast slab along the width direction of the precast slab; each group of supporting mechanisms comprises a driving motor detachably connected to the pier, a horizontal shaft rotatably connected to the top of the prefabricated slab and detachably connected with an output shaft of the driving motor, a plurality of lead screws sequentially arranged along the length direction of the prefabricated slab and rotatably connected to the top of the prefabricated slab, and a driving assembly arranged between the horizontal shaft and the lead screws and used for driving the lead screws to rotate; each screw rod is in threaded connection with a sleeve, the top of each sleeve is fixedly connected with a supporting plate, and the top of each prefabricated plate is provided with a guide assembly for guiding the supporting plate; a support plate is arranged at the bottom of the main beam corresponding to the support guard plate, a connecting plate is fixedly connected to the bottom of the support plate, an installation groove is formed in the connecting plate, an inserting plate is connected to the installation groove in a sliding mode along the width direction of the connecting plate, and a plurality of groups of first reset components for driving the inserting plate to reset are arranged in the installation groove; the opposite inner sides of the supporting and protecting plate and the inserting plate are respectively provided with a first inclined plane; a strip-shaped slot for inserting a plug board is formed in one side of the supporting and protecting plate, and the cross-sectional area of the plug board is smaller than the opening area of the strip-shaped slot; and a fixing mechanism for fixing the top of the inserting plate is arranged in the supporting plate.

Through adopting above-mentioned technical scheme, make driving motor's output shaft and horizontal axis fixed connection earlier, then start driving motor, driving motor's output shaft drive horizontal axis rotates, the horizontal axis drives the lead screw rotation under drive assembly's effect this moment, the lead screw rotates drive sleeve rebound, sleeve rebound drives a backplate rebound, this moment a backplate drives the picture peg and is close to the bar slot and removes under the effect on first inclined plane, thereby can make the picture peg graft in the bar slot, moreover, the supporting plate rebound can be fixed the top of picture peg under fixed establishment's effect, can make two adjacent supporting plate fixed connection like this, thereby can improve the supporting effect of a backplate to the girder, therefore can prolong the life of girder.

The invention is further configured to: the driving assembly comprises a worm detachably connected to a horizontal shaft through a bolt and a worm wheel detachably connected to a lead screw through a bolt; the worm wheel and the worm are mutually meshed.

By adopting the technical scheme, the horizontal shaft rotates to drive the worm to rotate, the worm rotates to drive the worm wheel to rotate, and the worm wheel rotates to drive the lead screw to rotate; through setting up drive assembly, can make the lead screw pivoted more stable.

The invention is further configured to: the guide assembly comprises a guide rod fixedly connected to the bottom of the supporting and protecting plate and a guide pipe fixedly connected to the top of the precast slab; the guide rod is connected to the inner cavity of the guide tube in a sliding mode along the vertical direction.

Through adopting above-mentioned technical scheme, the stand pipe has the guide effect to the guide bar to can reduce the possibility that the backplate rotated along with the lead screw.

The invention is further configured to: each group of first reset assemblies comprises a first sliding groove arranged at the bottom of the mounting groove, a first sliding block connected to the first sliding groove in a sliding manner along the length direction of the prefabricated plate and a first spring fixedly connected to one side of the first sliding block; the first sliding block is fixedly connected to the bottom of the inserting plate; one end of the first spring, which is far away from the first sliding block, is fixedly connected to the inner wall of one end of the first sliding groove.

By adopting the technical scheme, the plug board moves to drive the first sliding block to move, the first sliding block moves to compress the first spring, and the first spring is in a compressed state at the moment; when the supporting plate needs to be replaced, the supporting plate is moved downwards through the lead screw, and the first sliding block drives the inserting plate to reset under the action of the first spring, so that the supporting plate is convenient to replace.

The invention is further configured to: the fixing mechanism comprises a first vertical groove arranged at the bottom of the supporting plate, a first vertical plate connected to the first sliding groove in a sliding manner along the vertical direction, a plurality of groups of second resetting components arranged in the first vertical groove and used for resetting the first vertical plate, a horizontal groove arranged in the supporting plate and communicated with the first vertical groove, and a horizontal plate connected to the horizontal groove in a sliding manner along the length direction of the supporting plate; the fixing mechanism also comprises two second inclined planes respectively arranged at the opposite inner sides of the horizontal plate and the first vertical plate, a second vertical groove which is arranged at the bottom of the supporting plate and is communicated with the horizontal groove, a second vertical plate which is connected to the second vertical groove in a sliding manner along the vertical direction, two third inclined planes respectively arranged at the opposite inner sides of the second vertical plate and the horizontal plate, and a plurality of groups of third resetting components which are arranged in the second vertical groove and are used for driving the second vertical plate to reset; the bottom of the second vertical groove is communicated with the top of the strip-shaped slot; the second vertical plate can abut against the top of the inserting plate.

By adopting the technical scheme, the supporting plate moves upwards to drive the first vertical plate to move upwards, the first vertical plate drives the horizontal plate to move close to the second vertical plate under the action of the second inclined surface, and the horizontal plate drives the second vertical plate to move downwards under the action of the third inclined surface, so that the second vertical plate is abutted against the top of the inserting plate; in conclusion, the supporting plate moves upwards to drive the inserting plate and the first vertical plate to move simultaneously, so that the cost can be saved, and the labor intensity of operators can be reduced.

The invention is further configured to: each group of second reset assemblies comprises a second sliding groove arranged on one side of the first vertical groove, a second sliding block connected to the second sliding groove in a sliding mode along the vertical direction, and a second spring fixedly connected to the top of the second sliding block; the second sliding block is fixedly connected to one side of the first vertical plate; and one end of the second spring, which is far away from the second sliding block, is fixedly connected to the top of the second sliding groove.

By adopting the technical scheme, the first vertical plate moves upwards to drive the second sliding block to move upwards, the second sliding block moves upwards to compress the second spring, and the second spring is in a compressed state; when needs make the riser reset, make earlier the supporting plate downstream, the riser resets under the effect of self gravity and the elasticity of second spring this moment to be convenient for reset the riser.

The invention is further configured to: each group of third reset assemblies comprises a third sliding groove arranged on one side of the second vertical groove, a third sliding block connected to the third sliding groove in a sliding mode along the vertical direction, and a third spring fixedly connected to the bottom of the third sliding block; the third sliding block is fixedly connected to one side of the second vertical plate; and one end of the third spring, which is far away from the third sliding block, is fixedly connected to the bottom of the third sliding groove.

By adopting the technical scheme, the second vertical plate moves downwards to drive the third sliding block to move, the third sliding block moves to compress the third spring, and the third spring is in a compressed state at the moment; when the second vertical plate needs to be reset, the third sliding block drives the second vertical plate to reset under the action of the third spring, so that the second vertical plate is convenient to reset.

The invention is further configured to: a connecting mechanism for fixing the horizontal shaft is arranged between the output shaft of the driving motor and the horizontal shaft, and comprises a square sliding groove arranged on the end face of one end of the horizontal shaft, a square inserting block connected to the square sliding groove in a sliding manner along the axial direction of the horizontal shaft, a handle fixedly connected to one side of the square inserting block and a through hole arranged on the output shaft of the driving motor and used for inserting the square inserting block; the output shaft of the driving motor is provided with a connecting assembly for fixing the square insert block, and the connecting assembly comprises a bolt, a stop block, a fourth spring and an insert hole, wherein the bolt is connected to the output shaft of the driving motor in a sliding manner along the radial direction of a horizontal shaft, the stop block is sleeved and fixed on the bolt, the fourth spring is sleeved on the bolt, and the insert hole is formed in one end, far away from the horizontal shaft, of the square insert; one end of the plug pin penetrates through an output shaft of the driving motor and extends into the through hole to be inserted into the jack; the stop block is fixedly connected to an output shaft of the driving motor through a plurality of fastening bolts, and each fastening bolt is in threaded connection with the output shaft of the driving motor; and two ends of the fourth spring are fixedly connected to the stop block and the output shaft of the driving motor respectively.

By adopting the technical scheme, the square insertion block is inserted into the through hole by moving the square insertion block, then the stop block is moved downwards by screwing the fastening bolt downwards, so that the plug pin is inserted into the jack, and the stop block is moved to compress the fourth spring, and at the moment, the fourth spring is in a compressed state; when the bolt is required to be separated from the jack, the fastening bolt is firstly unscrewed, and the stop block drives the bolt to reset under the action of the fourth spring, so that the square insertion block is conveniently separated from the through hole; through setting up fixed establishment, be convenient for make horizontal axis and driving motor's output shaft fixed connection on the one hand to the output shaft drive horizontal axis of the driving motor of being convenient for rotates, and on the other hand is convenient for make horizontal axis and driving motor's output shaft separation, thereby can reduce driving motor and cause the girder because of unexpected the start possibility that is damaged.

The invention is further configured to: a channel is formed in the main beam corresponding to the support frame, and a protection plate is installed on the channel.

By adopting the technical scheme, the supporting frame is convenient for operators to enter the supporting frame through the channel, so that the operators can operate the supporting device on the supporting frame conveniently.

The invention is further configured to: and inclined plates for supporting the prefabricated plates are arranged on the bridge piers and the supporting frames.

Through adopting above-mentioned technical scheme, through setting up the swash plate, be convenient for support the prefabricated plate, therefore can strengthen the intensity of prefabricated plate.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. firstly, an output shaft of a driving motor is fixedly connected with a horizontal shaft, then the driving motor is started, the output shaft of the driving motor drives the horizontal shaft to rotate, the horizontal shaft drives a screw to rotate under the action of a driving assembly, the screw rotates to drive a sleeve to move upwards, the sleeve moves upwards to drive a supporting plate to move upwards, the supporting plate drives an inserting plate to move close to a strip-shaped inserting groove under the action of a first inclined plane, so that the inserting plate can be inserted into the strip-shaped inserting groove, and the supporting plate moves upwards and can fix the top of the inserting plate under the action of a fixing mechanism, so that two adjacent supporting plates are fixedly connected, the supporting effect of the supporting plate on a main beam can be improved, and the service life of the main beam can be prolonged;

2. the supporting and protecting plate moves upwards to drive the first vertical plate to move upwards, at the moment, the first vertical plate drives the horizontal plate to move close to the second vertical plate under the action of the second inclined surface, and the horizontal plate drives the second vertical plate to move downwards under the action of the third inclined surface, so that the second vertical plate is abutted against the top of the inserting plate; in conclusion, the supporting plate moves upwards to drive the inserting plate and the first vertical plate to move simultaneously, so that the cost can be saved and the labor intensity of operators can be reduced;

3. the square insertion block is inserted into the through hole by moving the square insertion block, then the stop block is moved downwards by screwing the fastening bolt downwards, so that the plug pin is inserted into the jack, and the stop block is moved to compress the fourth spring, and the fourth spring is in a compressed state; when the bolt is required to be separated from the jack, the fastening bolt is firstly unscrewed, and the stop block drives the bolt to reset under the action of the fourth spring, so that the square insertion block is conveniently separated from the through hole; through setting up fixed establishment, be convenient for make horizontal axis and driving motor's output shaft fixed connection on the one hand to the output shaft drive horizontal axis of the driving motor of being convenient for rotates, and on the other hand is convenient for make horizontal axis and driving motor's output shaft separation, thereby can reduce driving motor and cause the girder because of unexpected the start possibility that is damaged.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of an embodiment of a highlighting support mechanism;

FIG. 3 is a partial cross-sectional view of a highlighted securing mechanism of an embodiment;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

FIG. 6 is an enlarged view of a portion of FIG. 3 at C;

FIG. 7 is a schematic view showing the structure of the connection mechanism in the embodiment;

FIG. 8 is a schematic diagram showing the structure of the through hole in the embodiment.

In the figure: 10. a main beam; 11. a bridge pier; 12. a support frame; 13. a channel; 14. a protection plate; 2. a first support device; 21. prefabricating a slab; 22. a sloping plate; 3. a support mechanism; 31. a drive motor; 32. a horizontal axis; 33. a lead screw; 34. a sleeve; 35. supporting the guard plate; 351. a strip-shaped slot; 36. a guide assembly; 361. a guide bar; 362. a guide tube; 37. a support plate; 371. a connecting plate; 372. mounting grooves; 373. inserting plates; 374. a first inclined plane; 38. a drive assembly; 381. a worm; 382. a worm gear; 39. a first reset assembly; 391. a first chute; 392. a first slider; 393. a first spring; 4. a fixing mechanism; 41. a first vertical slot; 42. a first vertical plate; 43. a horizontal groove; 44. a horizontal plate; 441. a second inclined plane; 45. a second vertical slot; 46. a second vertical plate; 461. a third inclined plane; 47. a second reset assembly; 471. a second chute; 472. a second slider; 473. a second spring; 48. a third reset assembly; 481. a third chute; 482. a third slider; 483. a third spring; 5. a connecting mechanism; 51. a square chute; 52. a square insert block; 53. a handle; 54. a through hole; 55. a connecting assembly; 551. a bolt; 552. a stopper; 553. a fourth spring; 554. and (4) inserting the jack.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): a supporting structure of a bridge comprises main beams 10 and piers 11, wherein a plurality of supporting frames 12 used for supporting the main beams 10 are arranged between the piers 11, channels 13 are formed in the main beams 10 corresponding to the supporting frames 12, protection plates 14 are arranged on the channels 13, a first supporting device 2 used for supporting the main beams 10 is arranged between the supporting frames 12 and the piers 11, and a second supporting device which is used for supporting the main beams 10 and has the same structure as the first supporting device 2 is arranged between the adjacent supporting frames 12; the first support device 2 and the second support device have the same structure, and the structure of the first support device 2 will be described in detail below, and the structure of the second support device will not be described in detail.

As shown in fig. 1 and 2, the first supporting device 2 includes a precast slab 21 having two ends respectively fixed to opposite inner sides of the pier 11 and the supporting frame 12 and horizontally disposed, and a plurality of sets of supporting mechanisms 3 sequentially disposed on the top of the precast slab 21 along the width direction of the precast slab 21; inclined plates 22 for supporting the precast slabs 21 are mounted on the bridge piers 11 and the support frames 12, and the precast slabs 21 and the inclined plates 22 can be fixedly connected with the bridge piers 11 and the support frames 12 in a pouring mode or through expansion bolts; each group of supporting mechanisms 3 comprises a driving motor 31 detachably connected to the pier 11 through expansion bolts, a horizontal shaft 32 rotatably connected to the top of the prefabricated slab 21 and detachably connected with an output shaft of the driving motor 31, a plurality of lead screws 33 sequentially arranged along the length direction of the prefabricated slab 21 and rotatably connected to the top of the prefabricated slab 21, and a driving assembly 38 arranged between the horizontal shaft 32 and the lead screws 33 and used for driving the lead screws 33 to rotate; the horizontal shaft 32 is arranged along the length direction of the prefabricated panel 21; a sleeve 34 is connected to each screw 33 in a threaded manner, a supporting plate 35 is fixedly connected to the top of the sleeve 34, and a guide assembly 36 for guiding the supporting plate 35 is mounted at the top of the prefabricated plate 21; the guide assembly 36 comprises a guide rod 361 fixedly connected to the bottom of the support guard plate 35 and a guide pipe 362 fixedly connected to the top of the prefabricated plate 21; the guide rod 361 is connected with the inner cavity of the guide tube 362 in a sliding manner along the vertical direction; as shown in fig. 3, a support plate 37 is mounted at the bottom of the main beam 10 corresponding to the support plate 35, a connection plate 371 is fixedly connected to the bottom of the support plate 37, a mounting groove 372 is formed in the connection plate 371, an insert plate 373 is slidably connected to the mounting groove 372 along the width direction of the connection plate 371, and a plurality of first reset assemblies 39 for driving the insert plate 373 to reset are arranged in the mounting groove 372; the opposite inner sides of the supporting guard plate 35 and the insert plate 373 are respectively provided with a first inclined surface 374; a strip-shaped slot 351 for inserting the plug board 373 is formed in one side of the supporting plate 35, and the cross-sectional area of the plug board 373 is smaller than the opening area of the strip-shaped slot 351; a fixing mechanism 4 for fixing the top of the plug-in board 373 is installed in the supporting plate 37; the support plate 37 can be fixed to the bottom of the main beam 10 by means of expansion bolts or pouring. Make driving motor 31's output shaft and horizontal axis 32 fixed connection earlier, then start driving motor 31, driving motor 31's output shaft drive horizontal axis 32 rotates, horizontal axis 32 drives lead screw 33 under drive assembly 38's effect and rotates this moment, lead screw 33 rotates drive sleeve 34 rebound, sleeve 34 rebound drives fender board 35 rebound, fender board 35 drives picture peg 373 near the strip slot 351 removal under the effect of first inclined plane 374 this moment, thereby can make picture peg 373 peg 351, moreover, fender board 35 rebound can be fixed the top of picture peg 373 under the effect of fixed establishment 4, can make two adjacent fender boards 35 fixed connection like this, thereby can improve the supporting effect of fender board 35 to girder 10, therefore can prolong the life of girder 10.

The drive assembly 38 includes a worm 381 removably bolted to the horizontal shaft 32 and a worm gear 382 removably bolted to the lead screw 33; the worm wheel 382 intermeshes with the worm 381. The horizontal shaft 32 rotates to drive the worm 381 to rotate, the worm 381 rotates to drive the worm wheel 382 to rotate, and the worm wheel 382 rotates to drive the screw rod 33 to rotate; by providing the driving assembly 38, the rotation of the lead screw 33 can be further stabilized.

As shown in fig. 3 and 4, each set of the first returning members 39 includes a first sliding groove 391 opened at the bottom of the installation groove 372, a first sliding block 392 slidably connected to the first sliding groove 391 along the length direction of the prefabricated plate 21, and a first spring 393 fixedly connected to one side of the first sliding block 392; the first slide block 392 is fixedly connected to the bottom of the plug plate 373; one end of the first spring 393 away from the first slider 392 is fixedly connected to an inner wall of one end of the first sliding chute 391. The plug plate 373 moves to drive the first slide block 392 to move, the first slide block 392 moves to compress the first spring 393, and the first spring 393 is in a compressed state at the moment; when the supporting plate 35 needs to be replaced, the supporting plate 35 is moved downwards through the lead screw 33, and at this time, the first sliding block 392 drives the inserting plate 373 to reset under the action of the first spring 393, so that the supporting plate 35 is replaced conveniently.

The fixing mechanism 4 comprises a first vertical groove 41 arranged at the bottom of the supporting plate 37, a first vertical plate 42 connected to the first sliding groove 391 in a sliding manner along the vertical direction, a plurality of groups of second resetting components 47 arranged in the first vertical groove 41 and used for resetting the first vertical plate 42, a horizontal groove 43 arranged in the supporting plate 37 and communicated with the first vertical groove 41, and a horizontal plate 44 connected to the horizontal groove 43 in a sliding manner along the length direction of the supporting plate 35; the fixing mechanism 4 further comprises two second inclined surfaces 441 respectively arranged at the opposite inner sides of the horizontal plate 44 and the first vertical plate 42, a second vertical groove 45 arranged at the bottom of the supporting plate 37 and communicated with the horizontal groove 43, a second vertical plate 46 connected to the second vertical groove 45 in a vertical sliding manner, two third inclined surfaces 461 respectively arranged at the opposite inner sides of the second vertical plate 46 and the horizontal plate 44, and a plurality of groups of third resetting components 48 arranged in the second vertical groove 45 and used for resetting the second vertical plate 46; the bottom of the second vertical groove 45 is communicated with the top of the strip-shaped slot 351; the second riser 46 can abut against the top of the insert plate 373. The support guard plate 35 moves upwards to drive the first vertical plate 42 to move upwards, at this time, the first vertical plate 42 drives the horizontal plate 44 to move close to the second vertical plate 46 under the action of the second inclined surface 441, and the horizontal plate 44 drives the second vertical plate 46 to move downwards under the action of the third inclined surface 461, so that the second vertical plate 46 can abut against the top of the insert plate 373; in summary, the supporting plate 35 moves upward to drive the inserting plate 373 and the first vertical plate 42 to move simultaneously, so that the cost can be saved and the labor intensity of operators can be reduced.

As shown in fig. 3 and 5, each set of second restoring assemblies 47 includes a second sliding chute 471 arranged at one side of the first vertical chute 41, a second sliding block 472 connected to the second sliding chute 471 in a vertically sliding manner, and a second spring 473 fixedly connected to the top of the second sliding block 472; the second slider 472 is fixedly connected to one side of the first vertical plate 42; one end of the second spring 473 away from the second slider 472 is fixed to the top of the second sliding chute 471. The first vertical plate 42 moves upwards to drive the second sliding block 472 to move upwards, the second sliding block 472 moves upwards to compress the second spring 473, and the second spring 473 is in a compressed state; when the first vertical plate 42 needs to be reset, the support guard plate 35 is moved downward first, and at this time, the first vertical plate 42 is reset under the action of its own weight and the elastic force of the second spring 473, so that the first vertical plate 42 is reset conveniently.

As shown in fig. 3 and 6, each set of third reset assemblies 48 includes a third sliding slot 481 opened at one side of the second vertical slot 45, a third slider 482 connected to the third sliding slot 481 in a vertically sliding manner, and a third spring 483 fixedly connected to the bottom of the third slider 482; the third slider 482 is fixedly connected to one side of the second vertical plate 46; one end of the third spring 483 remote from the third slider 482 is fixedly connected to the bottom of the third sliding groove 481. The downward movement of the second vertical plate 46 drives the third slider 482 to move, and the third slider 482 moves to compress the third spring 483, wherein the third spring 483 is in a compressed state; when it is necessary to reset the second riser 46, the third slider 482 drives the second riser 46 to reset by the third spring 483, thereby facilitating the resetting of the second riser 46.

As shown in fig. 7 and 8, a connecting mechanism 5 for fixing the horizontal shaft 32 is installed between the output shaft of the driving motor 31 and the horizontal shaft 32, the connecting mechanism 5 includes a square sliding groove 51 formed in an end surface of one end of the horizontal shaft 32, a square insertion block 52 slidably connected to the square sliding groove 51 along an axial direction of the horizontal shaft 32, a handle 53 fixedly connected to one side of the square insertion block 52, and a through hole 54 formed in the output shaft of the driving motor 31 for inserting the square insertion block 52; a connecting assembly 55 for fixing the square insert block 52 is mounted on the output shaft of the driving motor 31, the connecting assembly 55 includes a bolt 551 slidably connected to the output shaft of the driving motor 31 along the radial direction of the horizontal shaft 32, a stopper 552 fixed on the bolt 551 in a sleeved manner, a fourth spring 553 sleeved on the bolt 551, and a jack 554 arranged at one end of the square insert block 52 far away from the horizontal shaft 32; one end of the plug 551 penetrates through the output shaft of the driving motor 31 and extends into the through hole 54 to be plugged into the jack 554; the stopper 552 is fixedly coupled to the output shaft of the drive motor 31 by a plurality of fastening bolts, each of which is threadedly coupled to the output shaft of the drive motor 31; both ends of the fourth spring 553 are respectively fixed to the stopper 552 and the output shaft of the driving motor 31. The square insert 52 is inserted into the through hole 54 by moving the square insert 52, and then the stopper 552 is moved downward by screwing down the fastening bolt, so that the pin 551 is inserted into the insertion hole 554, and further the stopper 552 is moved to compress the fourth spring 553, and the fourth spring 553 is in a compressed state; when the bolt 551 is required to be separated from the inserting hole 554, the fastening bolt is firstly unscrewed, and at the moment, the stop 552 drives the bolt 551 to reset under the action of the fourth spring 553, so that the square inserting block 52 is separated from the through hole 54 conveniently; through setting up fixed establishment 4, be convenient for on the one hand make horizontal axis 32 and driving motor 31's output shaft fixed connection to be convenient for driving motor 31's output shaft drive horizontal axis 32 to rotate, on the other hand is convenient for make horizontal axis 32 and driving motor 31's output shaft separation, thereby can reduce driving motor 31 and cause the possibility that girder 10 was damaged because of accidental start.

The working principle of the supporting structure of the bridge is as follows:

firstly, the output shaft of the driving motor 31 is fixedly connected with the horizontal shaft 32, then the driving motor 31 is started, the output shaft of the driving motor 31 drives the horizontal shaft 32 to rotate, the horizontal shaft 32 rotates to drive the worm 381 to rotate, the worm 381 rotates to drive the worm wheel 382 to rotate, the worm wheel 382 rotates to drive the screw rod 33 to rotate, the screw rod 33 rotates to drive the sleeve 34 to move upwards, the sleeve 34 moves upwards to drive the supporting and protecting plate 35 to move upwards, at this time, the supporting and protecting plate 35 drives the inserting plate 373 to move close to the strip-shaped slot 351 under the action of the first, therefore, the insert plate 373 can be inserted into the strip-shaped slot 351, the supporting plate 35 drives the first vertical plate 42 to move upwards, the first vertical plate 42 drives the horizontal plate 44 to move close to the second vertical plate 46 under the action of the second inclined surface 441, and the horizontal plate 44 drives the second vertical plate 46 to move downwards under the action of the third inclined surface 461, so that the second vertical plate 46 can abut against the top of the insert plate 373.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. The utility model provides a supporting construction of bridge, includes girder (10) and pier (11), its characterized in that: a plurality of supporting frames (12) used for supporting the main beam (10) are arranged between the piers (11), a first supporting device (2) used for supporting the main beam (10) is arranged between each supporting frame (12) and each pier (11), and a second supporting device which is used for supporting the main beam (10) and has the same structure as the first supporting device (2) is arranged between every two adjacent supporting frames (12); the first supporting device (2) comprises precast slabs (21) and a plurality of groups of supporting mechanisms (3), wherein two ends of the precast slabs (21) are fixedly connected to the opposite inner sides of the bridge pier (11) and the supporting frame (12) respectively and are horizontally arranged, and the plurality of groups of supporting mechanisms (3) are sequentially arranged at the tops of the precast slabs (21) along the width direction of the precast slabs (21);

each group of supporting mechanisms (3) comprises a driving motor (31) detachably connected to a pier (11), a horizontal shaft (32) rotatably connected to the top of the precast slab (21) and detachably connected with an output shaft of the driving motor (31), a plurality of lead screws (33) sequentially arranged along the length direction of the precast slab (21) and rotatably connected to the top of the precast slab (21), and a driving assembly (38) arranged between the horizontal shaft (32) and the lead screws (33) and used for driving the lead screws (33) to rotate;

each screw rod (33) is in threaded connection with a sleeve (34), the top of each sleeve (34) is fixedly connected with a supporting and protecting plate (35), and the top of each prefabricated plate (21) is provided with a guide assembly (36) for guiding the supporting and protecting plate (35); a supporting plate (37) is installed at the bottom of the main beam (10) corresponding to the supporting plate (35), a connecting plate (371) is fixedly connected to the bottom of the supporting plate (37), a mounting groove (372) is formed in the connecting plate (371), an inserting plate (373) is connected to the mounting groove (372) in a sliding mode along the width direction of the connecting plate (371), and a plurality of groups of first resetting components (39) used for driving the inserting plate (373) to reset are arranged in the mounting groove (372); the opposite inner sides of the supporting and protecting plate (35) and the inserting plate (373) are respectively provided with a first inclined surface (374); a strip-shaped slot (351) for inserting a plug board (373) is formed in one side of the supporting plate (35), and the cross-sectional area of the plug board (373) is smaller than the opening area of the strip-shaped slot (351);

and a fixing mechanism (4) for fixing the top of the plug board (373) is arranged in the supporting plate (37).

2. The supporting structure of a bridge according to claim 1, wherein: the drive assembly (38) comprises a worm (381) detachably connected to the horizontal shaft (32) by a bolt and a worm wheel (382) detachably connected to the lead screw (33) by a bolt; the worm wheel (382) is meshed with the worm (381).

3. The supporting structure of a bridge according to claim 1, wherein: the guide assembly (36) comprises a guide rod (361) fixedly connected to the bottom of the supporting and protecting plate (35) and a guide pipe (362) fixedly connected to the top of the precast slab (21); the guide rod (361) is connected with the inner cavity of the guide tube (362) in a sliding manner along the vertical direction.

4. The supporting structure of a bridge according to claim 1, wherein: each group of first resetting assemblies (39) comprises a first sliding groove (391) arranged at the bottom of the mounting groove (372), a first sliding block (392) connected to the first sliding groove (391) in a sliding manner along the length direction of the precast slab (21), and a first spring (393) fixedly connected to one side of the first sliding block (392); the first sliding block (392) is fixedly connected to the bottom of the inserting plate (373); one end of the first spring (393) far away from the first sliding block (392) is fixedly connected to the inner wall of one end of the first sliding chute (391).

5. The supporting structure of a bridge according to claim 1, wherein: the fixing mechanism (4) comprises a first vertical groove (41) arranged at the bottom of the supporting plate (37), a first vertical plate (42) connected to the first sliding groove (391) in a sliding manner along the vertical direction, a plurality of groups of second resetting components (47) arranged in the first vertical groove (41) and used for resetting the first vertical plate (42), a horizontal groove (43) arranged in the supporting plate (37) and communicated with the first vertical groove (41), and a horizontal plate (44) connected to the horizontal groove (43) in a sliding manner along the length direction of the supporting plate (35);

the fixing mechanism (4) further comprises two second inclined planes (441) which are respectively arranged at one end of the horizontal plate (44) contacted with the first vertical plate (42), a second vertical groove (45) which is arranged at the bottom of the supporting plate (37) and communicated with the horizontal groove (43), a second vertical plate (46) which is connected to the second vertical groove (45) in a vertical sliding manner, two third inclined planes (461) which are respectively arranged at one end of the second vertical plate (46) contacted with the horizontal plate (44), and a plurality of groups of third resetting components (48) which are arranged in the second vertical groove (45) and are used for driving the second vertical plate (46) to reset; the bottom of the second vertical groove (45) is communicated with the top of the strip-shaped slot (351); the second vertical plate (46) can abut against the top of the insert plate (373).

6. The supporting structure of a bridge according to claim 5, wherein: each group of second resetting assemblies (47) comprises a second sliding groove (471) arranged on one side of the first vertical groove (41), a second sliding block (472) connected to the second sliding groove (471) in a sliding mode along the vertical direction, and a second spring (473) fixedly connected to the top of the second sliding block (472); the second sliding block (472) is fixedly connected to one side of the first vertical plate (42); one end of the second spring (473) far away from the second sliding block (472) is fixedly connected to the top of the second sliding chute (471).

7. The supporting structure of a bridge according to claim 5, wherein: each group of the third reset assemblies (48) comprises a third sliding groove (481) arranged on one side of the second vertical groove (45), a third sliding block (482) connected to the third sliding groove (481) in a sliding manner along the vertical direction, and a third spring (483) fixedly connected to the bottom of the third sliding block (482); the third sliding block (482) is fixedly connected to one side of the second vertical plate (46); one end of the third spring (483) far away from the third sliding block (482) is fixedly connected to the bottom of the third sliding groove (481).

8. The supporting structure of a bridge according to claim 1, wherein: a connecting mechanism (5) for fixing the horizontal shaft (32) is arranged between an output shaft of the driving motor (31) and the horizontal shaft (32), the connecting mechanism (5) comprises a square sliding groove (51) arranged on the end face of one end of the horizontal shaft (32), a square inserting block (52) connected to the square sliding groove (51) in a sliding manner along the axial direction of the horizontal shaft (32), a handle (53) fixedly connected to one side of the square inserting block (52) and a through hole (54) arranged on the output shaft of the driving motor (31) and used for inserting the square inserting block (52);

a connecting assembly (55) used for fixing the square insert block (52) is mounted on an output shaft of the driving motor (31), the connecting assembly (55) comprises a bolt (551) connected to the output shaft of the driving motor (31) in a sliding manner along the radial direction of the horizontal shaft (32), a stop block (552) fixed to the bolt (551) in a sleeved manner, a fourth spring (553) sleeved on the bolt (551) and a jack (554) arranged at one end, far away from the horizontal shaft (32), of the square insert block (52); one end of the plug pin (551) penetrates through an output shaft of the driving motor (31) and extends into the through hole (54) to be plugged with the jack (554); the stop block (552) is fixedly connected to an output shaft of the driving motor (31) through a plurality of fastening bolts, and each fastening bolt is in threaded connection with the output shaft of the driving motor (31); and two ends of the fourth spring (553) are respectively and fixedly connected with the stop block (552) and an output shaft of the driving motor (31).

9. The supporting structure of a bridge according to claim 1, wherein: a channel (13) is formed in the main beam (10) corresponding to the support frame (12), and a protection plate (14) is installed on the channel (13).

10. The supporting structure of a bridge according to claim 1, wherein: sloping plates (22) used for supporting the precast slabs (21) are mounted on the bridge piers (11) and the supporting frames (12).

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