CN116657475A - Adjustable steel structure bridge structure - Google Patents

Abstract

The invention discloses an adjustable steel bridge structure, and belongs to the technical field of bridges; the structure comprises a first bridge body and a second bridge body which are respectively arranged on a supporting mechanism, wherein the first bridge body and the second bridge body are in sliding fit, and the sliding direction of the first bridge body and the second bridge body is arranged along the width direction of the bridge body; the supporting mechanism is provided with an adjusting mechanism for adjusting the distance between the first bridge body and the second bridge body; the support mechanism comprises a support beam and a support arm arranged on the side part of the bridge body, one end of the support arm is hinged with the bridge body, and the other end of the support arm is hinged on the support beam; the adjusting mechanism comprises an adjusting arm arranged on a supporting arm on one side of the second bridge body, one end of the adjusting arm is hinged with the middle section of the supporting arm, the other end of the adjusting arm is hinged with an adjusting reel, and the adjusting reel is connected with a driving oil cylinder so as to drive the adjusting arm. Therefore, the first bridge body and the second bridge body can be firmly supported and are far away from or close to each other under the action of the adjusting mechanism, so that the adjustment of the bridge deck width is realized, and the flexibility and the adaptability of the steel bridge are improved.

Description

Adjustable steel structure bridge structure

Technical Field

The invention relates to the technical field of bridges, in particular to an adjustable steel bridge structure.

Background

The steel bridge is convenient to assemble and high in adaptability, and is widely applied to the scenes with relatively small spans, such as bridges of steel bridge trestle, glass sightseeing platform, small-span highway steel bridge and the like.

In the actual use process of the existing steel bridge, the steel bridge comprises a plurality of steel bridge body units, and when the bridge pier is constructed, the whole steel bridge can be formed by assembling the steel bridge body units. However, the bridge body units of the steel bridge are mostly in a fixed structure, so that when the steel bridge is in actual use, the width of the bridge body needs to be increased temporarily when different use requirements are met, and additional bridge body construction methods are generally adopted for additionally installing supporting equipment, so that the bridge body is widened.

The Chinese patent document with publication number of CN207904769U discloses an adjustable width template device, wherein a slidable adjusting steel plate is added on a flange plate side die of a bridge girder template of a highway or railway curve bridge, a vertical angle steel is added on a flange plate bottom die, the vertical angle steel is added on the flange plate bottom die for widening, the width is the maximum sagittal height calculated according to bridge curve elements and girder length, and the slidable adjusting steel plate is fixedly connected with the added vertical angle steel through bolts. The scheme can widen the width of the bridge, but has lower efficiency in practical construction, is mainly suitable for the additional widening use of the existing fixed bridge, and has lower flexibility.

In addition, chinese patent publication No. CN204959583U discloses a mobile high-strength emergency bridge structure comprising a bridge body made of a lightweight and rigid material and supporting elements for supporting the bridge body on the ground, the supporting elements being provided with at least 2, the bridge body and the supporting elements being movably connected; the support elements are hinged at two opposite ends of the bridge body; the bridge body is provided with a rotating shaft, the supporting element is provided with a hook for fixing the rotating shaft, and the rotating shaft can rotate along the hook; the support member is provided with rollers at its distal end for sliding the support member along the bridge body. The bridge in the patent can be quickly adjusted in height and width after being assembled. However, this scheme is only applicable to portable and mobilizable emergency rescue bridge, is difficult to popularize and use on the general bridge structure.

Therefore, how to realize flexible adjustment of the width of the steel bridge is a current difficult problem in the field.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to overcome the defect that the width of a bridge body of a steel bridge is difficult to adjust in the prior art, and provides an adjustable steel bridge structure. According to the scheme, the width of the bridge body can be flexibly adjusted to the required position through the supporting mechanism and the adjusting mechanism, and the practicality of the bridge of the type is improved while the stable support of the bridge body of the steel bridge is ensured.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

the invention relates to an adjustable steel bridge structure, which comprises a first bridge body and a second bridge body which are respectively arranged on a supporting mechanism, wherein the first bridge body and the second bridge body are in sliding fit, and the sliding direction of the first bridge body and the second bridge body is arranged along the width direction of the bridge body; the supporting mechanism is provided with an adjusting mechanism for adjusting the distance between the first bridge body and the second bridge body;

the supporting mechanism comprises a supporting beam and supporting arms arranged at two sides of the bridge body, one end of each supporting arm is hinged with the bridge body, and the other end of each supporting arm is hinged on the supporting beam;

the adjusting mechanism comprises an adjusting arm arranged on a supporting arm on one side of the second bridge body, one end of the adjusting arm is hinged to the middle section of the supporting arm, the other end of the adjusting arm is hinged to an adjusting reel, and the adjusting reel is connected with a driving oil cylinder to drive the adjusting arm.

Further, the supporting beam and the adjusting reel are of arc plate-shaped structures and are concentrically arranged, and the adjusting reel is arranged on the supporting beam in a rolling guide manner; the outer wall of the adjusting reel is provided with a driving rack section, the driving rack section is meshed with a driving gear, and the driving gear is connected with a driving oil cylinder.

Further, a jacking supporting plate connected with a lifting unit is arranged on the supporting beam, the lifting unit drives the upper plate surface of the jacking supporting plate to be propped against or separated from the lower plate surface of the second bridge body, and the jacking supporting plate is in sliding fit with the supporting beam, and the sliding direction of the jacking supporting plate is consistent with that of the second bridge body.

Further, the lower plate surface of the second bridge body is provided with a linkage roller, a wheel carrier of the linkage roller is connected with a telescopic slide bar, the bottom end of the telescopic slide bar is in sliding fit with a sliding sleeve, and the sliding sleeve is fixedly arranged on the jacking supporting plate; the support is characterized in that guide sliding rods are arranged around the jacking support plate and slidably arranged on a sliding support, and the sliding support is slidably arranged in a track on the support beam.

Further, the lifting unit comprises lifting inclined planes arranged on two sides of the jacking supporting plate, the lifting inclined planes are in abutting fit with lifting rollers, the lifting rollers are mounted on clamping sliding blocks, the clamping sliding blocks are arranged on a sliding support in a sliding mode, clamping nuts are arranged on the sliding support, the clamping nuts are matched with clamping screw rods, and the clamping screw rods are connected with a clamping motor.

Further, guide rollers are arranged on the upper side and the lower side of the two ends of the supporting beam, and the adjusting reel is clamped in the area between the guide rollers.

Further, a shifting roller is arranged at the upper side and the lower side of the middle section of the supporting arm, two ends of the shifting roller are connected through a roller frame, and one end of the adjusting arm is hinged with the roller frame.

Further, a locking arm is arranged on the supporting arm at one side of the first bridge body, the other end of the locking arm is hinged with a locking arc plate, and the locking arc plate is concentrically arranged with the adjusting reel; the outer wall of the locking arc plate is provided with a locking ratchet which is matched with a locking pawl, and the locking pawl is hinged to the supporting beam.

Further, the second bridge body is provided with a butt strap, the lower plate surface of the first bridge body is provided with balls in an array, and the balls are abutted against the butt strap; the upper plate surface one side overhang of first axle body is provided with the direction extension board, the upper plate surface one side length direction interval of second axle body is provided with the direction spout, the direction extension board slidingtype sets up in the direction spout.

Further, including hoist mechanism, hoist mechanism is including the hoist roller of rotation type setting in the bridge body lateral part, hoist roller length direction interval is provided with multiunit jib, and the jib upper end is connected with the hoist frame, and the hoist frame articulates the setting on the hoist truss, and hoist truss slidingtype setting is on the hoist portal frame, and hoist portal frame arranges along bridge body width direction, hoist portal frame and pier fixed connection.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) According to the adjustable steel structure bridge structure, the bridge deck forms a sliding fit mode through the first bridge body and the second bridge body, so that the first bridge body and the second bridge body are in a far-away or near-away state under the adjustment of the adjusting mechanism, and the width of the bridge body can be adjusted. The first bridge body and the second bridge body can stably support the whole bridge body through the supporting mechanism, so that the flexibility and the adaptability of the steel bridge are improved.

(2) According to the adjustable steel bridge structure, the locking arm is arranged on the supporting arm at one side of the first bridge body, the other end of the locking arm is hinged with the locking arc plate, the locking ratchet is arranged on the outer wall of the locking arc plate and matched with the locking pawl, and the locking pawl is hinged on the supporting beam. When the width of the bridge body is adjusted, the locking pawl is separated from the locking ratchet; after the adjustment is finished, the locking pawl is abutted against the locking ratchet to lock the locking arc plate, so that the whole first bridge body and the whole second bridge body are locked.

Drawings

FIG. 1 is a front view of an adjustable steel bridge construction;

FIG. 2 is a side view of an adjustable steel bridge structure;

FIG. 3 is a perspective view of an adjustable steel bridge structure;

FIG. 4 is a perspective view of an alternative view of an adjustable steel bridge structure;

FIG. 5 is a schematic view of the adjustable steel bridge structure after removal of the prefabricated fixing member and the bridge pier;

FIG. 6 is a bottom view of the adjustable steel bridge structure after removal of the prefabricated anchor and pier;

FIG. 7 is a bottom view of the adjustable steel bridge structure from another view after it has been removed from the preformed anchor and pier;

FIG. 8 is a schematic cross-sectional view of a portion of the structure of FIG. 5;

FIG. 9 is a schematic cross-sectional view of a portion of the structure of FIG. 5 from another perspective;

FIG. 10 is a schematic cross-sectional view of another portion of the structure of FIG. 5;

fig. 11 is a front view of the structure of fig. 10.

Reference numerals in the schematic drawings illustrate:

100. a first bridge body; 110. a ball; 120. a guide support plate;

200. a second bridge body; 210. a linkage roller; 220. a telescopic slide bar; 230. a sliding sleeve; 240. a butt strap; 250. a guide chute; 251. a cylindrical clamping groove;

300. a support arm; 310. a support beam; 320. a position baffle; 330. a guide roller; 340. a track;

400. jacking the supporting plate; 410. a guide slide bar; 420. a sliding bracket; 440. lifting inclined planes; 450. a lifting roller; 451. clamping a sliding block; 452. clamping a nut; 453. clamping a screw rod; 454. clamping a motor; 460. a plug-in column;

500. an adjusting arm; 510. adjusting the reel; 511. driving the rack section; 512. a drive gear; 513. a driving oil cylinder; 520. a pulling roller; 530. a lock limiting arm; 540. locking the arc plate; 541. locking the ratchet; 542. a locking pawl;

600. lifting rollers; 610. a boom; 620. hoisting a frame; 630. hoisting the truss;

700. prefabricating a fixing piece; 710. bridge piers; 720. a bolt.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the invention without substantial modification to the technical context.

An adjustable steel bridge structure of the present embodiment, as shown in fig. 1 to 4, includes a first bridge body 100 and a second bridge body 200 respectively disposed on a supporting mechanism, the first bridge body 100 and the second bridge body 200 are slidingly engaged and the sliding direction is arranged along the width direction of the bridge body; the supporting mechanism is provided with an adjusting mechanism for adjusting the interval between the first bridge body 100 and the second bridge body 200. The supporting mechanism comprises a supporting beam 310 and supporting arms 300 arranged at two sides of the bridge body, one ends of the supporting arms 300 are hinged with the bridge body, and the other ends of the supporting arms 300 are hinged on the supporting beam 310. The adjusting mechanism comprises an adjusting arm 500 arranged on the supporting arm 300 at one side of the second bridge body 200, one end of the adjusting arm 500 is hinged with the middle section of the supporting arm 300, the other end of the adjusting arm 500 is hinged with an adjusting reel 510, and the adjusting reel 510 is connected with a driving oil cylinder 513 so as to drive the adjusting arm 500.

Through the setting, the bridge floor forms sliding fit's mode through first bridge body and second bridge body for show the state of keeping away from or being close to between first bridge body and the second bridge body, and then realize the adjustment to bridge body width. In addition, the first bridge body and the second bridge body can stably support the whole bridge body through the supporting mechanism. The steel structure of this embodiment conveniently adjusts the width of steel structure bridge, under the circumstances of guaranteeing to the steady support of steel structure bridge body, has improved the flexibility ratio and the adaptability that this type of steel structure bridge used.

The first bridge body 100 and the second bridge body 200 are directly fixed with the bridge pier 710, so the first bridge body 100 and the second bridge body 200 are the most important links for bearing forces in the steel bridge structure.

By adjusting the width of the first bridge girder 100 and the second bridge girder 200, the width of the entire bridge can be adjusted. Other unit bridge bodies of the bridge are similar to the first bridge body 100 and the second bridge body 200 in structure, sliding fit is formed between the first bridge body 100 and the second bridge body 200, and quick connection in plug connection is formed between the unit bridge bodies of other structures and the first bridge body 100 and the second bridge body 200, so that the steel bridge can be mounted efficiently.

The adjusting mechanisms are arranged on the first bridge body 100 and the second bridge body 200 which are the most critical of the whole bridge, so that the width of the bridge body of the key ring of the steel bridge can be effectively adjusted, the width of the whole bridge can be adjusted, and the adaptability of the whole bridge is improved.

Specifically, as shown in fig. 6, when the adjustment of the interval between the first bridge body 100 and the second bridge body 200 is performed, the adjusting mechanism includes an adjusting arm 500 provided on the supporting arm 300 at one side of the second bridge body 200, one end of the adjusting arm 500 is hinged to the middle section of the supporting arm 300, the other end of the adjusting arm 500 is hinged to the adjusting sheave 510, the hinge shafts at both ends of the adjusting arm 500 are parallel to the hinge shafts of the supporting arm 300, the adjusting sheave 510 rotates and the driving of the adjusting arm 500 is performed.

When the distance between the first bridge body 100 and the second bridge body 200 needs to be adjusted, the adjusting reel 510 is started to rotate to adjust the position of the adjusting arm 500, and the connecting arm 300 rotates around the hinge shaft through the hinge of one end of the adjusting arm 500 and the supporting arm 300 on one side of the second bridge body 200, so that the first bridge body 100 and the second bridge body 200 are connected to each other in a close or far state, and the distance between the first bridge body 100 and the second bridge body 200 is adjusted.

In this embodiment, the supporting mechanism includes multiple groups of supporting arms 300, the supporting arms 300 are disposed at two side positions of the first bridge body 100 and the second bridge body 200, and multiple groups of supporting arms 300 are disposed at intervals along two side length directions of the first bridge body 100 and the second bridge body 200. One end of the plurality of groups of support arms 300 is hinged with both sides of the first bridge body 100 and the second bridge body 200, the hinge shafts of the support arms 300 are horizontally arranged and are parallel to the length direction of the first bridge body 100 and the second bridge body 200, and the other ends of the plurality of groups of support arms 300 are hinged on the support beams 310.

When the first bridge body 100 and the second bridge body 200 are supported, the first bridge body 100 and the second bridge body 200 can be stably supported by the plurality of groups of support arms 300 hinged at two side positions, and the other ends of the plurality of groups of support arms 300 are hinged on the support beam 310.

By adjusting the angle of the support arm 300, the distance between the first bridge body 100 and the second bridge body 200 can be further adjusted to adjust the width between the first bridge body 100 and the second bridge body 200.

In order to perform stable support of the first bridge body 100 and the second bridge body 200, as shown in fig. 6, and perform reliable rotation of the adjusting sheave 510, the supporting beam 310 is in an arc plate shape as a whole, the adjusting sheave 510 is in an arc plate shape as a whole, and the center of the arc surface is arranged concentrically with the center of the supporting beam 310, and the adjusting sheave 510 is arranged on the supporting beam 310 in a rolling guide manner; the outer wall of the adjusting reel 510 is provided with a driving rack section 511, the driving rack section 511 is meshed with a driving gear 512, and the driving gear 512 is connected with a driving oil cylinder 513.

When the distance between the first bridge body 100 and the second bridge body 200 is adjusted, the hydraulic cylinder 513 is started to rotate the adjusting reel 510, so that the position of the adjusting arm 500 at the supporting arm 300 can be adjusted to adjust the hinge angle of the supporting arm 300, and the distance between the first bridge body 100 and the second bridge body 200 can be adjusted to meet more use requirements.

As shown in fig. 8, the supporting beam 310 is provided with a jacking supporting plate 400, the jacking supporting plate 400 is connected with a lifting unit, the lifting unit drives the upper plate surface of the jacking supporting plate 400 to abut against or separate from the lower plate surface of the second bridge body 200, the jacking supporting plate 400 and the supporting beam 310 form sliding fit, and the sliding direction of the jacking supporting plate 400 is synchronous with the sliding direction of the second bridge body 200.

After the width between the first bridge body 100 and the second bridge body 200 is adjusted to the set width, the lifting unit drives the lifting support plate 400 to abut against the lower plate surface of the second bridge body 200 to support the second bridge body 200, so as to ensure the reliability of the support between the first bridge body 100 and the second bridge body 200, and the lifting support plate 400 abuts against the lower plate surface of the second bridge body 200, so that the locking between the first bridge body 100 and the second bridge body 200 can be implemented, and the displacement problem between the first bridge body 100 and the second bridge body 200 can be avoided.

To further improve the reliability of the position support of the second bridge body 200 and to ensure stable coupling of the first and second bridge bodies 100 and 200, the problem of small displacement between the first and second bridge bodies 100 and 200 is avoided. As shown in fig. 7, a linkage roller 210 is disposed on the lower plate surface of the second bridge body 200, a telescopic slide bar 220 is disposed on the wheel frame of the linkage roller 210, the lower end of the telescopic slide bar 220 and a sliding sleeve 230 form a sliding fit, and the sliding sleeve 230 is vertically fixed on the jacking support plate 400. Guide sliding rods 410 are arranged around the jacking supporting plate 400, the guide sliding rods 410 are vertically arranged on a sliding support 420 in a sliding mode, and the sliding support 420 is arranged in a track 340 on the supporting beam 310 in a sliding mode.

When the locking of the jacking supporting plate 400 and the second bridge body 200 is implemented, the jacking supporting plate 400 is abutted against the lower plate surface of the second bridge body 200 through the lifting of the jacking supporting plate 400, so that the second bridge body 200 is supported, and under the action of the linkage roller 210, the jacking supporting plate 400 can move along with the movement of the position of the second bridge body 200 under the action of the linkage roller 210, so that the combination position of the jacking supporting plate 400 and the lower plate surface of the second bridge body 200 is unchanged, and the aim of locking the position of the second bridge body 200 is fulfilled.

In this embodiment, as shown in fig. 9, the lifting unit includes lifting inclined planes 440 disposed at two sides of the lifting support plate 400, the lifting inclined planes 440 are in abutting fit with lifting rollers 450, the lifting rollers 450 are mounted on clamping sliders 451, the clamping sliders 451 are slidably disposed on the sliding support 420, clamping nuts 452 are disposed on the sliding support 420, the clamping nuts 452 are matched with clamping screws 453, the clamping screws 453 are connected with a clamping motor 454, and the clamping screws 453 are horizontally disposed.

By starting the clamping motor 454, the clamping slider 451 slides along the sliding bracket 420, and then the jacking supporting plate 400 is lifted, so that the jacking supporting plate 400 is combined with the lower plate surface of the second bridge body 200 in an abutting manner, reliable supporting of the lower plate surface of the second bridge body 200 is achieved, and displacement between the first bridge body 100 and the second bridge body 200 is avoided.

Specifically, as shown in fig. 9 and 10, two sets of pulling rollers 520 are disposed in the middle section of the support arm 300, the wheel cores of the pulling rollers 520 are horizontal and parallel to the hinge shaft of the support arm 300, the two sets of pulling rollers 520 are disposed at the upper and lower sides of the support arm 300, two ends of the two sets of pulling rollers 520 are connected through a roller frame, and one end of the adjusting arm 500 is connected with the roller frame through the hinge shaft.

Further, two sets of limiting baffles 320 are disposed on the support arm 300, the two sets of limiting baffles 320 are disposed at the upper and lower sides of the support arm 300, and the two sets of limiting baffles 320 respectively limit the two sets of pulling rollers 520.

In addition, two sets of guide rollers 330 are disposed at both ends of the support beam 310, the two sets of guide rollers 330 are disposed in the vertical direction at both ends of the support beam 310, and the adjusting sheave 510 is clamped in the region between the two sets of guide rollers 330.

When the support arm 300 is shifted, as shown in fig. 5 and 11, the two sets of shifting rollers 520 are disposed at the middle section of the support arm 300, and the two sets of limiting baffles 320 are used for limiting the two sets of shifting rollers 520, so that one end of the adjusting arm 500 is hinged with the roller frames of the two sets of shifting rollers 520, and when the position of one end of the adjusting arm 500 changes, the adjustment of the hinge angle of the support arm 300 can be further realized, so that the adjustment of the space between the first bridge body 100 and the second bridge body 200 can be implemented.

After the interval between the first bridge body 100 and the second bridge body 200 is adjusted to a proper position, the first bridge body 100 and the second bridge body 200 need to be locked, so that displacement between the first bridge body 100 and the second bridge body 200 is avoided. In this embodiment, a locking arm 530 is disposed on the supporting arm 300 at one side of the first bridge body 100, the other end of the locking arm 530 is hinged to a locking arc plate 540, and the locking arc plate 540 is concentrically arranged with the adjusting reel 510; the outer wall of the locking arc plate 540 is provided with locking ratchets 541, the locking ratchets 541 are engaged with locking pawls 542, and the locking pawls 542 are hinge-mounted on the support beam 310.

In actual adjustment, when the adjustment of the interval between the first and second bodies 100 and 200 is performed, the locking pawl 542 is separated from the locking ratchet 541, and the locking arc 540 is rotated along the two sets of guide rollers 330 in the opposite direction in synchronization with the adjustment sheave 510 to perform the guide when the adjustment between the first and second bodies 100 and 200 is performed.

After the adjustment is completed, the locking pawl 542 abuts against the locking ratchet 541 to lock the locking ratchet 541 and the locking arc plate 540, thereby achieving preliminary locking of the entire first bridge body 100 and second bridge body 200.

In order to realize the connection between the first bridge body 100 and the second bridge body 200, the second bridge body 200 and the first bridge body 100 can move in opposite directions or in opposite directions stably, so as to achieve the purpose of adjusting the width of the bridge body. As shown in fig. 11, the second bridge body 200 is provided with a butt strap 240, and the lower plate surface of the first bridge body 100 is provided with balls 110 in an array, and the balls 110 are abutted against the butt strap 240.

In this embodiment, as shown in fig. 10, a guiding support plate 120 is overhanging and arranged on one side of the upper plate surface of the first bridge body 100, multiple groups of guiding support plates 120 are arranged along the length direction of one side of the upper plate surface of the first bridge body 100 at intervals, guiding sliding grooves 250 are arranged along the length direction of one side of the upper plate surface of the second bridge body 200 at intervals, and the guiding support plates 120 are slidably arranged in the guiding sliding grooves 250.

In order to implement the lifting of the first bridge body 100 and the second bridge body 200 and ensure the reliable support of the whole bridge body, in this embodiment, lifting mechanisms are provided on the first bridge body 100 and the second bridge body 200, as shown in fig. 3, the lifting mechanisms include lifting rollers 600 rotatably provided at the sides of the bridge body, and the shaft centers of the lifting rollers 600 are horizontally arranged along the length direction of the steel bridge.

As shown in fig. 1 and 2, a plurality of groups of hanging rods 610 are arranged at intervals in the length direction of the hanging roller 600, the hanging rods 610 are vertically arranged with the hanging roller 600, the upper ends of the hanging rods 610 are connected with a hanging frame 620, the hanging frame 620 is hinged to a hanging truss 630, the hanging truss 630 is slidably arranged on a hanging portal frame, the hanging portal frame is arranged along the width direction of a bridge body, and the hanging portal frame is fixedly connected with a bridge pier 710.

Through the rotatably arranged lifting roller 600 and the lifting frame 620, when the whole suspension rod 610 is connected with the first bridge body 100 and the second bridge body 200, the distance between the first bridge body 100 and the second bridge body 200 can be changed, so as to achieve the purpose of fastening.

In addition, as shown in fig. 1, the supporting beam 310 is fixed on the prefabricated fixing member 700, a plurality of groups of fixing and combining bolts 720 are arranged on the joint surface of the prefabricated fixing member 700 and the bridge pier 710 in an array manner, jacks are arranged on the bridge pier 710 in an array manner, the bolts 720 and damping rings in the jacks form plug-in fit, and the hoisting portal frame is fixed on the bridge pier 710.

When in practical application, the oblique pulling force generated by the hoisting mechanism can effectively implement oblique pulling support on the first bridge body 100, the second bridge body 200 and the unit bridge bodies at other positions, so that the stability of the bridge support can be effectively improved, the service life of the whole bridge is prolonged, and the use safety of the bridge is ensured.

In order to ensure the reliability of the combination of the jacking supporting plate 400 and the second bridge body 200, as shown in fig. 10, a cylindrical clamping groove 251 is arranged on the lower plate surface of the second bridge body 200 in an array manner, and a plugging column 460 is arranged on the upper plate surface of the jacking supporting plate 400 in an array manner, wherein the plugging column 460 and the cylindrical clamping groove 251 form plugging or separating fit.

When the plug-in post 460 is matched with the cylindrical clamping groove 251, the reliability of supporting the second bridge body 200 can be ensured, and the aim of reliably supporting the whole bridge body can be achieved.

The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. In order to avoid duplication of content, duplicate content of each embodiment is omitted, but it cannot be considered that the corresponding embodiment does not include features of other embodiments, and features of mutual cooperation between different embodiments may also be combined with each other, so, if one skilled in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively designed without departing from the gist of the present invention, and all the features belong to the protection scope of the present invention.

Claims (10)

1. The adjustable steel bridge structure is characterized by comprising a first bridge body (100) and a second bridge body (200) which are respectively arranged on a supporting mechanism, wherein the first bridge body (100) and the second bridge body (200) are in sliding fit, and the sliding direction of the first bridge body and the second bridge body is arranged along the width direction of the bridge body; the supporting mechanism is provided with an adjusting mechanism for adjusting the distance between the first bridge body (100) and the second bridge body (200);

the supporting mechanism comprises a supporting beam (310) and supporting arms (300) arranged at two sides of the bridge body, one ends of the supporting arms (300) are hinged with the bridge body, and the other ends of the supporting arms (300) are hinged on the supporting beam (310);

the adjusting mechanism comprises an adjusting arm (500) arranged on a supporting arm (300) on one side of the second bridge body (200), one end of the adjusting arm (500) is hinged to the middle section of the supporting arm (300), the other end of the adjusting arm (500) is hinged to an adjusting winch (510), and the adjusting winch (510) is connected with a driving oil cylinder (513) to drive the adjusting arm (500).

2. The adjustable steel bridge structure according to claim 1, wherein the supporting beam (310) and the adjusting sheave (510) are both in an arc-shaped plate structure and are concentrically arranged, and the adjusting sheave (510) is arranged on the supporting beam (310) in a rolling guiding manner; the outer wall of the adjusting reel (510) is provided with a driving rack section (511), the driving rack section (511) is meshed with a driving gear (512), and the driving gear (512) is connected with a driving oil cylinder (513).

3. The adjustable steel bridge structure according to claim 1, wherein the supporting beam (310) is provided with a lifting supporting plate (400) connected with a lifting unit, the lifting unit drives the upper plate surface of the lifting supporting plate (400) to abut against or separate from the lower plate surface of the second bridge body (200), and the lifting supporting plate (400) is in sliding fit with the supporting beam (310) and the sliding direction is consistent with the sliding direction of the second bridge body (200).

4. An adjustable steel bridge structure according to claim 3, wherein the lower plate surface of the second bridge body (200) is provided with a linkage roller (210), a telescopic slide bar (220) is connected to the wheel frame of the linkage roller (210), the bottom end of the telescopic slide bar (220) is in sliding fit with a sliding sleeve (230), and the sliding sleeve (230) is fixedly arranged on the jacking supporting plate (400); the periphery of the jacking supporting plate (400) is provided with a guide sliding rod (410), the guide sliding rod (410) is arranged on a sliding support (420) in a sliding mode, and the sliding support (420) is arranged in a track (340) on the supporting beam (310) in a sliding mode.

5. An adjustable steel bridge structure according to claim 3, characterized in that the lifting unit comprises lifting inclined planes (440) arranged on two sides of the jacking supporting plate (400), the lifting inclined planes (440) are in abutting fit with lifting rollers (450), the lifting rollers (450) are mounted on clamping sliding blocks (451), the clamping sliding blocks (451) are slidably arranged on sliding supports (420), clamping nuts (452) are arranged on the sliding supports (420), the clamping nuts (452) are matched with clamping screw rods (453), and the clamping screw rods (453) are connected with clamping motors (454).

6. The adjustable steel bridge structure according to claim 1, wherein guide rollers (330) are arranged on the upper side and the lower side of two ends of the supporting beam (310), and the adjusting reel (510) is clamped in the area between the guide rollers (330).

7. The adjustable steel bridge structure according to claim 1, wherein a shifting roller (520) is arranged at the upper side and the lower side of the middle section of the supporting arm (300), two ends of the shifting roller (520) are connected through a roller frame, and one end of the adjusting arm (500) is hinged with the roller frame.

8. The adjustable steel bridge structure according to claim 1, wherein a locking arm (530) is arranged on a supporting arm (300) at one side of the first bridge body (100), the other end of the locking arm (530) is hinged with a locking arc plate (540), and the locking arc plate (540) is concentrically arranged with the adjusting reel (510); the outer wall of the locking arc plate (540) is provided with a locking ratchet (541), the locking ratchet (541) is matched with a locking pawl (542), and the locking pawl (542) is hinged on the supporting beam (310).

9. The adjustable steel bridge structure according to claim 1, wherein the second bridge body (200) is provided with a butt strap (240), the lower plate surface of the first bridge body (100) is provided with balls (110) in an array, and the balls (110) are abutted against the butt strap (240); the upper plate surface one side of first bridge body (100) is provided with direction extension board (120), the upper plate surface one side length direction interval of second bridge body (200) is provided with direction spout (250), direction extension board (120) slidingtype setting is in direction spout (250).

10. The adjustable steel bridge structure according to claim 1, comprising a hoisting mechanism, wherein the hoisting mechanism comprises hoisting rollers (600) rotatably arranged at the side parts of the bridge body, a plurality of groups of hoisting rods (610) are arranged at intervals in the length direction of the hoisting rollers (600), the upper ends of the hoisting rods (610) are connected with hoisting frames (620), the hoisting frames (620) are hinged to hoisting trusses (630), the hoisting trusses (630) are slidably arranged on hoisting portal frames, the hoisting portal frames are arranged along the width direction of the bridge body, and the hoisting portal frames are fixedly connected with bridge piers (710).