The technical solutions of the present invention will be clearly and completely described below in conjunction with embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
Such asFigure 1-10As shown, the present invention is a unit beam type multi-directional displacement telescopic device, including a unit beam, a shock-absorbing multi-directional displacement support 7, an inverted panel 3, a concrete end support bracket 14, a cable device, and a limit device 8. , Water stop device, the unit beam is divided into a fixed unit beam 2 and a telescopic unit beam 1, the fixed unit beam 2 is installed on the shock-absorbing multi-directional displacement support 7 of the concrete end support bracket 14;
The telescopic unit beam 1 is installed on the shock-absorbing multi-directional displacement support 7 of the steel beam side support bracket plate 9, and the fixed unit beam 2 is installed on the shock-absorbing multi-directional displacement support of the concrete end support bracket 14. On the seat 7, a limit device 8 is arranged between the telescopic unit beams 1, and a transverse cable device is arranged at the bottom to connect the unit beams horizontally into a whole to limit the lateral displacement and ensure driving safety;
The telescopic unit beam 1 is provided with a positioning device 8 on both sides near the beam end. The telescopic unit beam 1 and the fixed unit beam 2 are mutually staggered, guide each other, slide and expand and contract with each other, and an inverted panel 3 is arranged between the ends. The telescopic end cover plate 4 is fixed, and a sealing strip 21 is arranged between the telescopic end cover plate 4 and the support bracket vertical plate 6. The cross section of the telescopic unit beam 1 is in the shape of "I", and the upper contact plate restricts the up and down movement of the inverted panel. The inverted panel moves longitudinally under the limit of the upper contact plate to prevent falling off and dislocation.
The inverted panel 3 is connected in series by the inverted panel connecting shaft 3-1 to form an inverted chain plate. One end of the inverted chain plate is connected to the end of the telescopic unit beam 1 and is placed between the fixed unit beams 2, and the bottom is connected to the fixed unit beam. The unit beams 2 are fastened to each other, the inverted chain plate slides longitudinally with the telescopic unit plate 1, and the length of the road changes with the expansion and contraction. The changing section area is guided by the concrete end support bracket 14 and placed vertically at the beam end. The other end of the chain plate is connected with the counterweight 15, and the inverted chain plate and the unit beam form a cross-beam joint structural plane that is flush with the road, ensuring smooth and safe driving.
The inverted buckle panel 3 has a protruding block with holes in the front and a groove with holes in the back. The front and rear are connected in series by the connecting shaft 3-1. The bottom is provided with an inverted T-shaped structure, which is buckled on the contact plate of the fixed unit beam 2 to prevent vehicles When driving, it jumps up and down to improve driving safety.
The shock-absorbing multi-directional displacement support 7 is formed by compound vulcanization of upper and lower steel plates and middle steel plates and rubber. The rubber has the functions of shock absorption and flexible connection, and can realize the bearing and rotation functions. The upper and lower steel plates of the support are provided with anchor bolts 7-1, The upper part is fixed with the bottom plate of the telescopic unit beam 1 and the fixed unit beam 2 by anchor bolts 7-1, and the lower part is connected with the support bracket plate 9.
The concrete end support bracket 14 is composed of an anchor plate 14-1, a guide vertical plate 14-2, a limit vertical plate 14-3, an upper guide plate 14-4, a lower guide plate 14-5, and a bracket support plate 14-6 , The bottom and rear sides of the guide vertical plate 14-2 are connected with the anchor plate 14-1, the front side is connected with the limit vertical plate 14-3, the limit vertical plate 14-3, the guide vertical plate 14-2, A square through hole is opened between the upper guide plate 14-4 and the lower guide plate 14-5, and a number of through holes are opened at the rear of the anchor plate 14-1, and the transverse steel bars 16 are connected and anchored with the steel bars in the beam end groove to form a concrete beam end Support bracket anchor system.
The transverse cable device is composed of a base 18, a pressure plate 19, a cable 20, and fixing bolts. The base 18 is fixed to the bottom of the fixed unit beam 2, the pressure plate 19 fixes the cable 20 to the base 18, and the cable 20 fixes the unit beam. 2Horizontal series connection limit, maintain the integrity of the telescopic device, and prevent the unit beam from falling off after falling.
The support bracket vertical plate 6 is fixed to the support bracket flat plate 9, the support bracket stiffening plate 10 is fixed to the support bracket flat plate 9 and the steel beam end 5, the support bracket vertical plate 6 is close to the steel beam end 5, and the support bracket A shock-absorbing multi-directional displacement support 7 is installed on the frame plate 9.
The water stop device is composed of a water stop belt 11, a water stop belt pressing plate 12, and a screw 13. The water stop belt 11 is fixed on both sides of the beam end with a water stop belt pressing plate 12 and a screw 13 respectively. The end face of the plate 14-6 prevents the water between the beam joints from falling into the bottom of the beam joint, which affects the use environment of the lower components of the bridge.
The unit beam type multi-directional variable telescopic device of the present invention adopts longitudinally arranged unit beams and horizontally arranged side by side, and inverted chain plates are arranged between the unit beams, which reduces the net spacing of the horizontal arrangement and avoids steps and gaps in the direction of the vehicle. , So as to avoid jumping and noise. The joint structure of the expansion device adopts the form of unit beam, which increases the height of the structure, improves the material utilization layout, increases the bending resistance of the structure, and improves the safety performance of the structure. The bottom of the unit beam is equipped with a shock-absorbing multi-directional displacement bearing, which can reduce the impact of vehicle load on the expansion device and the bridge. The unit beam can adapt to the expansion and contraction of the bridge, plane rotation, vertical rotation, and lateral rotation, and will not produce The structure of the telescopic device is protruding or recessed, which affects driving safety and vehicle jumping, and the surface is always flat, which is beneficial to driving smoothly and safely.
The invention solves the problems of serious vehicle jumping, high driving noise and poor uniform displacement ability of the traditional modular telescopic device, and also solves the problem of large comb slot installation groove size, high installation accuracy requirements, and unsuitable cross stitch type comb plate slot Problems such as pedestrian traffic can improve driving comfort, reduce the structural size of bridge expansion joint installation grooves, reduce vibration and noise, and meet the multi-directional displacement of beams and the structural displacement of long-span bridges. The unitized design is convenient for installation and replacement. service.
The above content is merely an example and description of the structure of the present invention. Those skilled in the art make various modifications or additions to the specific embodiments described or substitute similar methods, as long as they do not deviate from the structure of the invention or Anything beyond the scope defined by the claims shall fall within the protection scope of the present invention.
It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment.