CN220977719U - Bridge pushing device - Google Patents

Abstract

The utility model discloses a bridge pushing device which comprises a bottom plate, guide rails, sliding blocks, a top plate and a pushing jack, wherein the bottom plate is provided with the guide rails which are upwards protruded, the guide rails are connected with the sliding blocks in a sliding manner, the pushing jack is connected above the sliding blocks, the top plate is further connected above the pushing jack, the number of the two guide rails is two, the two guide rails are parallel to each other, one sliding block is connected to each of the two guide rails, a connecting block is arranged between the two guide rails, the two sliding blocks are fixedly connected through the connecting block, and a bottom plate bolt is further arranged on the bottom plate. The utility model aims to provide the bridge pushing device which enables all supporting points to bear the same force when the multipoint pushing construction is carried out, enables the applied jack with a plurality of supporting points to achieve ideal synchronous effect and enables the stress of the pushing device to be uniform in the construction pushing process of the bridge.

Description

Bridge pushing device

Technical Field

The utility model belongs to the field of engineering machinery, and particularly relates to a bridge pushing device.

Background

The bridge constructed by adopting the pushing method is the prestressed concrete continuous beam bridge at the earliest, and is applied to the construction of the steel structure bridge and the steel-concrete composite beam at the later stage. The steel box girder structure is different from a concrete girder, whether the local stress is stable or not is an important factor affecting the safety in the pushing process, and in recent years, a great deal of research results such as a Jiupu bridge, a two seven Yangtze bridge, a Hunder bridge and the like are obtained on analysis of the local stress and the stability of the steel box girder, and local problems are effectively improved due to the light dead weight and the reinforcement at the contact part of the pier and the girder.

However, when the multipoint pushing construction is performed, because the forces born by all the fulcrums are different, the ideal synchronous effect of the force-applied jacks with a plurality of fulcrums is difficult to achieve, and the stress of the pushing device is uneven in the construction pushing process of the bridge.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide a bridge pushing device which comprises a bottom plate, guide rails, sliding blocks, a top plate and a pushing jack, wherein the bottom plate is provided with the guide rails which are upwards protruded, the guide rails are connected with the sliding blocks in a sliding manner, the pushing jack is connected above the sliding blocks, the top plate is further connected above the pushing jack, the number of the guide rails is two, the two guide rails are parallel to each other, one sliding block is connected to the two guide rails, a connecting block is arranged between the two guide rails, the two sliding blocks are fixedly connected through the connecting block, and a bottom plate bolt is further arranged on the bottom plate.

Further, one end of the bottom plate is provided with a fixed baffle plate, the fixed baffle plate is located between the two guide rails, one end, close to the sliding block, of the fixed baffle plate is connected with a horizontal jack, and one end, far away from the sliding block, of the fixed baffle plate is connected with a triangular support block.

Further, a supporting block is arranged at the lower end of the horizontal jack, one end of the horizontal jack is connected with the fixed baffle, and the other end of the horizontal jack is connected with the connecting block.

Further, the other end of bottom plate is provided with stop device, stop device includes stopper, level detector and stop bolt, two guide rails are connected to the stopper to offered in the bottom of stopper with guide rail matched with spout be provided with stop bolt in the middle of the stopper, the level detector sets up the upper end of stopper.

Further, a plurality of limiting holes are formed in the bottom plate along the sliding direction of the sliding block, and the limiting holes are connected with the limiting bolts.

Further, the bottom surface of the bottom plate bolt is an inclined surface, the bottom of the bottom plate bolt is connected with the bridge pier surface, and the inclined surface of the bottom plate bolt is inclined at an angle of 3 degrees relative to the horizontal plane.

Preferably, one base plate bolt is provided at each of four corners of the base plate.

The utility model has the following beneficial effects:

1. the guide rail and the sliding block are in press fit, and can bear larger load and movement through the press fit;

2. the two sliding blocks are fixedly connected by the connecting block, so that the function of maintaining bridge balance in the pushing process can be achieved;

3. The limiting block and the bottom plate in the utility model use limiting bolts, so that the horizontal stroke can be fixed and limited;

4. According to the utility model, the pushing jack is arranged on the sliding block, and the top plate is arranged on the pushing jack, so that the contact surface with the bridge can be enlarged, and the friction force can be increased.

5. Screw holes are formed in the periphery of the bottom plate, and the bottom plate bolt can be used for adjusting certain skewness of the bridge.

6. The horizontal jack is connected to the fixed baffle plate, the fixed baffle plate is reinforced by the triangular supporting blocks, the stability and strength of the fixed baffle plate are improved, and meanwhile, the supporting blocks are arranged below the horizontal jack for fixing the horizontal jack.

Drawings

FIG. 1 is a schematic view of a bridge pushing device of the present utility model;

FIG. 2 is a schematic view of the structure of the base plate bolting of the present utility model;

wherein, 1-horizontal jack; 2-top plate; 3-a guide rail; 4-level detector; 5-a base plate bolt; 6-limiting bolts; 7-limiting blocks; 8-pushing the jack; 9-a slider; 10-supporting blocks; 11-a fixed baffle; 12-triangular support blocks; 13-connecting block.

Detailed Description

The utility model further provides a bridge pushing device with a detailed description with reference to the accompanying drawings.

According to the embodiment of the utility model, as shown in fig. 1, the bridge pushing device comprises a bottom plate, guide rails 3, sliding blocks 9, a top plate 2 and pushing jacks 8, wherein two guide rails 3 protruding upwards are arranged on the bottom plate along the sliding direction of the guide rails 3, the two guide rails 3 are parallel to each other, one sliding block 9 matched with the guide rails 3 for sliding is connected to the two guide rails 3, a connecting block 13 is arranged between the two guide rails 3, the two sliding blocks 9 are fixedly connected through the connecting block 13, one pushing jack 8 is connected above each sliding block 9, the top plate 2 is also connected above each pushing jack 8, the contact surface with the bridge can be enlarged, and the friction force in the pushing process can be increased. The vertical hydraulic cylinder is connected below each pushing jack 8, and the vertical hydraulic cylinder below the pushing jacks 8 is responsible for jacking the pushing jacks 8, and as the two sliding blocks 9 below the two pushing jacks 8 are fixedly connected through the connecting block 13, the synchronization of the two pushing jack 8 in the jacking process can be ensured, and the uniformity of the jacking force and the balance degree in the jacking process are ensured.

According to the embodiment of the utility model, a fixed baffle plate 11 is arranged at one end of the bottom plate, the fixed baffle plate 11 is positioned between the two guide rails 3, a horizontal jack 1 is connected to one end of the fixed baffle plate 11, which is close to the sliding block 9, and a triangular support block 12 is connected to one end of the fixed baffle plate, which is far away from the sliding block 9. The triangular support blocks 12 are two and are vertically fixed with the fixed baffle 11, and are respectively and fixedly arranged on two sides of the fixed baffle 11. A supporting block 10 is arranged at the lower end of the horizontal jack 1. The lower extreme of supporting shoe 10 is fixed in on the bottom plate, its upper end has seted up the circular arc notch of indent, horizontal jack 1 is fixed in the circular arc notch, the effect of supporting shoe 10 is just in order to support horizontal jack 1, horizontal jack 1's one end with fixed stop 11 is connected, the other end with the connecting block is connected, and horizontal jack 1 promotes horizontal jack 1 to move right under the effect of horizontal pneumatic cylinder, promotes connecting block 13 right motion then. During the compression of the horizontal jack 1, the connecting block 13 is driven to move to the left.

According to the embodiment of the utility model, a limiting device is arranged at the other end of the bottom plate, the limiting device comprises a limiting block 7, a level detector 4 and a limiting bolt 6, the limiting block 7 is connected with two guide rails 3, a sliding groove matched with the guide rails 3 is formed in the bottom of the limiting block 7, the limiting bolt 6 is arranged in the middle of the limiting block 7, and the level detector 4 is arranged at the upper end of the limiting block 7 and is arranged at one side of the limiting bolt 6. A plurality of limiting holes are formed in the bottom plate along the sliding direction of the sliding block 9, and the bottom plate is connected with the limiting bolts 6 through the limiting holes. The limit block 7 is fixed by the limit bolt 6, so that the stroke of the slide block 9 in the horizontal direction can be controlled. The level detector 4 is arranged to adjust the levelness of the bottom plate in the placing process.

According to the embodiment of the utility model and as shown in fig. 2, the bottom surface of the bottom plate bolt 5 is an inclined surface inclined upwards, the bottom of the bottom plate bolt 5 is connected with the bridge pier surface, and the inclination angle of the bottom inclined surface of the bottom plate bolt 5 relative to the horizontal plane is 3 degrees. A base plate bolt 5 is provided at each of the four corners of the base plate. The bottom plate of the pushing device is fixedly connected with the temporary bridge pier through four horizontally adjustable bottom plate bolts 5, and can horizontally adjust the error by 3 degrees, so that the problem of deflection of a connecting surface is solved.

The bridge pushing device has the working principle that firstly, two pushing jacks 8 are used for upwards supporting a bridge body, then the bridge body is pushed to the right through pushing of the horizontal jacks 1, when the bridge body reaches the position required by the bridge, the pushing jacks 8 fall back, the bridge body is placed on a bridge cushion block, and at the moment, the horizontal jacks 1 retract, so that a pushing stroke is completed. In the pushing process, the pushing jack 8 generates smaller counterforce to the outside by means of the pressure of the oil hydraulic cylinder instead of the counterforce of the bracket.

The method comprises the following steps of (1) starting a vertical hydraulic cylinder to drive pushing jacks 8, and synchronously and upwards pushing the bridge body by the two pushing jacks 8 to separate the bridge body from the bridge cushion block. (2) The second step is horizontal pushing, namely the pushing jack 8 stops upward pushing action, meanwhile, the horizontal hydraulic cylinder is started to drive the horizontal jack 1, the pushing cylinder is pushed to the right, the whole beam body is moved to the right until the stroke of one horizontal jack 1 is completed, and at the moment, the stroke can be limited by the limiting block 7. (3) And thirdly, in the falling process of the pushing jack 8, the horizontal jack 1 stops acting, and simultaneously, the vertical hydraulic cylinder is started to enable the pushing jack 8 to fall downwards and drive the whole bridge body to fall until the pushing jack 8 is completely separated from the bridge body, and at the moment, the bridge body is placed on the bridge cushion block. (4) And step four, in the compression process of the horizontal jack 1, the pushing jack 8 stops acting, and simultaneously, the horizontal hydraulic cylinder is started to compress the horizontal jack 1 and drive the connecting block 13 to move leftwards to return to the initial position. When the jack 8 is also returned to the initial position, the next reciprocating stroke is started, and one reciprocating stroke takes about 15 minutes. The pushing method can be used for pushing the bridge body forwards, and a plurality of jacks can be used for cooperative work, and all the jacks synchronously lift, synchronously push and synchronously drop the bridge.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Claims (7)

1. The bridge pushing device is characterized by comprising a bottom plate, a guide rail, a slide block, a top plate and a pushing jack, wherein the bottom plate is provided with an upward protruding guide rail, the guide rail is connected with the slide block in a sliding manner, the pushing jack is connected above the slide block, the top plate is also connected above the pushing jack,

The guide rails are two, the two guide rails are parallel to each other, a sliding block is connected to the two guide rails, a connecting block is arranged between the two guide rails, the two sliding blocks are fixedly connected through the connecting block, and a bottom plate bolt is further arranged on the bottom plate.

2. The bridge pushing device according to claim 1, wherein a fixed baffle is arranged at one end of the bottom plate, the fixed baffle is located between two guide rails, a horizontal jack is connected to one end of the fixed baffle, which is close to the sliding block, and a triangular supporting block is connected to one end of the fixed baffle, which is far away from the sliding block.

3. The bridge pushing device according to claim 2, wherein a supporting block is arranged at the lower end of the horizontal jack, one end of the horizontal jack is connected with the fixed baffle, and the other end is connected with the connecting block.

4. The bridge pushing device according to claim 1, wherein a limiting device is arranged at the other end of the bottom plate, the limiting device comprises a limiting block, a level detector and a limiting bolt, the limiting block is connected with two guide rails, a sliding groove matched with the guide rails is formed in the bottom of the limiting block, the limiting bolt is arranged in the middle of the limiting block, and the level detector is arranged at the upper end of the limiting block.

5. The bridge pushing device of claim 4, wherein a plurality of limiting holes are formed in the bottom plate along the sliding direction of the sliding block, and the limiting holes are connected with the limiting bolts.

6. The bridge pushing device of claim 1 wherein the bottom surface of the bottom plate bolt is a bevel, the bottom of the bottom plate bolt is connected to the bridge abutment surface, and the bevel of the bottom plate bolt is inclined at an angle of 3 ° relative to the horizontal.

7. The bridge pushing device of any one of claims 1-6 wherein one floor bolt is provided at each of the four corners of the floor.