Movable counter-force seat device for displacement adjustment of steel box girder

Abstract

The utility model discloses a movable counter-force seat device for displacement adjustment of a steel box girder, which comprises a bottom base plate, a support plate and reinforcing rib plates, the support plate is vertically arranged at one end of the bottom base plate, a plurality of reinforcing rib plates are arranged at the outer side end of the support plate and are welded with the bottom base plate, and the reinforcing rib plates are welded with the bottom base plate. The supporting plate is used for reversely pushing the jack, the bottom base plate is used for bearing a steel box girder, the jack is used for pushing the steel box girder, and a steel graduated scale is welded to the side face of the bottom base plate. The counter-force seat device can move according to the position of the steel box girder, provides the direction of jacking force, is convenient to machine, is simple and easy to use, and is favorable for improving the construction efficiency and reducing the cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely relates to a movable reaction seat device for steel box girder displacement adjustment. BACKGROUND

[0002] In the process of steel structure, fabricated structure installation, the situation of displacement adjustment to structure is often encountered. For example: the steel box girder of bridge superstructure adopts the incremental launching construction technology, in order to ensure that the steel box girder is accurately installed on the support, the steel box girder position needs to be fine-tuned after the incremental launching of the steel box girder is completed. Because the incremental launching equipment cannot be used for small displacement fine-tuning after the steel box girder is launched in place, the steel box girder can be fine-tuned by using a jack at this time, so that the position of the steel box girder meets the requirements of construction drawings and design specifications.

[0003] The steel box girder displacement adjustment in the prior art uses a transverse jack to provide jacking force, and a steel plate welded behind the transverse jack is used as a reaction seat to provide reaction force for the jacking of the jack to adjust the displacement of the steel box girder. This technology has the defects of poor displacement adjustment accuracy and low utilization rate and efficiency. The poor displacement adjustment accuracy is reflected in that the reaction seat is welded and fixed on the steel cover beam, and once it is welded and fixed, it cannot be adjusted, and the position of the reaction seat cannot be adjusted according to the actual position of the steel box girder. At the same time, the accurate data of the jacking displacement cannot be known during the jacking process, and the accuracy of the displacement adjustment of the steel box girder cannot be ensured. The low utilization rate and efficiency are reflected in that the steel plate is welded and fixed on the steel cover beam, and the steel plate needs to be welded as a reaction seat every time it is used, and the reaction seat needs to be removed after jacking is completed, which reduces the work efficiency of workers.

[0004] Therefore, it is necessary to provide a movable reaction seat device for steel box girder displacement adjustment to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a movable reaction seat device for steel box girder displacement adjustment, which can be moved according to the position of the steel box girder, provide the direction of jacking force, is convenient to process, simple to use, and is beneficial to the improvement of construction efficiency and the reduction of cost.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] A movable reaction seat device for steel box girder displacement adjustment, comprising a bottom base plate, a support plate and a reinforcing rib plate, the support plate is vertically arranged at one end of the bottom base plate, the outer side end of the support plate is provided with a plurality of reinforcing rib plates, and the reinforcing rib plates are welded with the bottom base plate, the support plate is used for counter-jacking a jack, the bottom base plate is used for receiving a steel box girder, the jack is used for jacking the steel box girder, and a steel scale is welded on the side surface of the bottom base plate.

[0008] As a further improvement of the above technical solution, a steel base plate is arranged between the support plate and the jack.

[0009] As a further improvement of the above technical solution, a drag reduction assembly is arranged between the steel box girder and the base plate.

[0010] As a further improvement of the above technical solution, the drag reduction assembly comprises a first Teflon plate, a second Teflon plate and a drag reduction butter arranged between the first Teflon plate and the second Teflon plate.

[0011] As a further improvement of the above technical solution, the zero end of the steel scale is aligned with the side end of the support plate close to the jack.

[0012] As a further improvement of the above technical solution, the extending end of the jack is provided with a pushing steel plate abutting against the steel box girder.

[0013] The beneficial effects of the present application are:

[0014] The steel plate and the base plate are welded into a whole to form a movable counterforce seat, so that the counterforce seat can be adjusted in real time according to the position of the steel box girder, and the angle during the jacking of the jack is ensured, avoiding the need to weld and fix the steel plate counterforce seat on the steel cover beam before the displacement adjustment of the steel box girder, which causes the counterforce seat to be unable to be adjusted in real time during the displacement adjustment of the steel box girder due to the welding and fixing of the jack. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below in combination with the drawings and examples.

[0016] Figure 1 is a structural schematic view of the movable counterforce seat device of the present application;

[0017] Figure 2 is Figure 1 is an enlarged view of A in figure

[0018] Figure 3 is Figure 1 is an enlarged view of B in figure

[0019] Reference signs: 1, base plate; 2, support plate; 3, reinforcing rib plate; 4, jack; 5, steel box girder; 6, steel scale; 7, steel base plate; 8, drag reduction assembly; 81, first Teflon plate; 82, second Teflon plate; 83, drag reduction butter; 9, pushing steel plate. DETAILED DESCRIPTION

[0020] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present application all belong to the scope of protection of the present application. In addition, all the connection / connection relationships involved in the patent do not mean that the components are directly connected, but that a better connection structure can be composed by adding or reducing connection accessories according to the specific implementation situation, such as fixed connection / fixed installation, which can be selected according to needs Screw connection, bolt connection, pin connection, key connection, adhesion, mortise and tenon connection, welding, riveting and the like, such as detachable connection, which can be selected according to needs Screw connection, bolt connection, threaded connection, buckle connection, mortise and tenon connection, magic tape connection and the like. The various technical features in the present application can be interactively combined without mutual contradiction and conflict.

[0021] Referring to Figure 1 , Figure 2 A movable counterforce seat device for displacement adjustment of a steel box girder, comprising a bottom base plate 1, a support plate 2 and a reinforcing rib plate 3, the support plate 2 is vertically arranged at one end of the bottom base plate 1, the support plate 2 is used for counteracting the jacks 4, the bottom base plate 1 is used for receiving the steel box girder 5, the support plate 2 and the bottom base plate 1 are welded into a whole to form a movable counterforce seat, which can be adjusted in real time according to the position of the steel box girder 5, and the angle during the jacking of the jacks 4 is ensured, thereby avoiding the need to weld and fix the steel plate counterforce seat on the steel cover beam before displacement adjustment of the steel box girder 5, so that the counterforce seat welded and fixed cannot be adjusted in real time during the displacement adjustment of the steel box girder 5; a plurality of reinforcing rib plates 3 are arranged at the outer side of the support plate 2, and the reinforcing rib plates 3 are welded with the bottom base plate 1 to increase the stability of the structure; at the same time, a steel scale 6 is welded on the side surface of the bottom base plate 1, so that the steel box girder 5 can be accurately positioned according to the point position on the construction drawing, and the accuracy of the displacement adjustment of the steel box girder 5 is ensured. By using the movable counterforce seat device of the present application, the steel box girder can be moved according to its position, the direction of the jacking force is provided, the processing is convenient, simple and easy to use, and it is beneficial to improve the construction efficiency and reduce the cost.

[0022] Referring to Figure 1 In the embodiments of the present application, a steel base plate 7 is arranged between the support plate 2 and the jacks 4, which can increase the displacement adjustment length, ensure that the adjustment is once to the point position on the construction drawing, and reduce the vertical jacks to lift the steel box girder to adjust the position of the counterforce seat again.

[0023] Referring toFigure 1 、 Figure 3 In the embodiment of the utility model, the steel box girder 5 and the bottom base plate 1 are provided with the drag reduction assembly 8, which effectively enhances the functionality and practicality of the movable counterforce seat device, and makes the counterforce seat device more suitable for the displacement adjustment task of the steel box girder; specifically, the drag reduction assembly 8 comprises a first Teflon plate 81, a second Teflon plate 82 and drag reduction butter 83, the drag reduction butter 83 is arranged between the first Teflon plate 81 and the second Teflon plate 82, wherein the Teflon plate is also called a polytetrafluoroethylene plate, has very low friction coefficient and excellent wear resistance, can effectively reduce the friction between the steel box girder 5 and the bottom base plate 1, and the drag reduction butter 83 is used as a lubricant to further reduce the friction coefficient between the Teflon plates, thereby reducing the friction.

[0024] When the horizontally arranged jack 4 is used to apply the jacking force F to the steel box girder 5, the relative movement between the steel box girder 5 and the counterforce seat device is affected by multiple friction forces. Among them, the friction force f1 between the Teflon plates is significantly reduced by smearing the butter 83. At the same time, the friction force between the whole counterforce seat and the steel box girder 5 is f2, according to the mechanical principle, when the friction force f2 is greater than the friction force f1, and the jacking force F is equal to the friction force f2, the whole counterforce seat will remain stationary, and the steel box girder 5 will move relative to the counterforce seat, in addition, the displacement of the steel box girder 5 can also be observed from the steel scale ruler 6 on the side of the counterforce seat to determine the displacement, thereby ensuring that the required displacement is adjusted according to the measured displacement before adjustment.

[0025] Referring to Figure 1 、 Figure 2 In the embodiment of the utility model, the zero scale end of the steel scale ruler 6 is aligned with the side end of the supporting plate 2 close to the jack, so that when the steel box girder 5 starts to move, the displacement can be directly read from the steel scale ruler 6, without the need for additional calculation or conversion, effectively improving the accuracy and convenience of displacement measurement.

[0026] The jacking end of the jack 4 is provided with a jacking steel plate 9, the jacking steel plate 9 abuts against the steel box girder 5, increases the contact area of the jack 4 and the steel box girder 5, reduces the risk of excessive local pressure, thereby protecting the steel box girder 5 and the jacking end of the jack 4 from being damaged.

[0027] The above is a specific description of the preferred embodiment of the utility model, but the utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A movable reaction seat device for adjusting the displacement of a steel box girder, characterized in that: It includes a base plate, a support plate, and reinforcing ribs. The support plate is vertically disposed at one end of the base plate. Multiple reinforcing ribs are disposed on the outer side of the support plate and are welded to the base plate. The support plate is used to push the jack in the opposite direction. The base plate is used to support the steel box girder. The jack is used to push the steel box girder. A steel scale is welded to the side of the base plate.

2. The movable reaction seat device for adjusting the displacement of a steel box girder according to claim 1, characterized in that: A steel pad is provided between the support plate and the jack.

3. A movable reaction seat device for adjusting the displacement of a steel box girder according to claim 1, characterized in that: A drag-reducing component is provided between the steel box girder and the bottom pad.

4. A movable reaction seat device for adjusting the displacement of a steel box girder according to claim 3, characterized in that: The drag-reducing assembly includes a first PTFE plate, a second PTFE plate, and drag-reducing grease, wherein the drag-reducing grease is disposed between the first PTFE plate and the second PTFE plate.

5. A movable reaction seat device for adjusting the displacement of a steel box girder according to claim 1, characterized in that: The zero mark end of the steel ruler is aligned with the side end of the support plate closest to the jack.

6. A movable reaction seat device for adjusting the displacement of a steel box girder according to claim 1, characterized in that: The extended end of the jack is provided with a jacking steel plate, which abuts against the steel box girder.

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