Telescopic device for widening bridge

Abstract

The utility model relates to the technical field of bridge construction, and discloses a telescopic device for widening a bridge, which comprises bridge bodies, water guide plates are fixedly connected to the end surfaces of the close sides of the two bridge bodies, a telescopic device is arranged between the two bridge bodies, and the telescopic device comprises a mounting part; and the mounting part comprises a mounting plate, a screw rod, a mounting shell, a concrete layer and a silica gel layer. According to the telescopic device for bridge widening, by arranging a first spring, a supporting plate, a supporting block, a trapezoidal block, a sliding rod, a check block and a third spring, the supporting plate can move left and right through the elastic force of the first spring, the trapezoidal block and the sliding rod move left and right through the elastic force of the third spring, and when bridge bodies on the two sides get close to each other, the first spring and the third spring are both compressed; and when the two bridge bodies are far away from each other, the supporting plates are in butt joint with the supporting blocks, so that the supporting plates and the supporting blocks support a gap between the two bridge bodies.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a telescopic device for widening a bridge. Background Art

[0002] When widening a bridge, due to the inconsistent shrinkage of the two, the concrete of the new bridge shrinks and creeps, which will produce greater additional stress on the old bridge. The bridge expansion device refers to a expansion device that is usually installed between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge to meet the requirements of bridge deck deformation.

[0003] A Chinese patent discloses a telescopic device for bridge widening, with the publication number CN218508238U, comprising a new bridge and an old bridge arranged relatively to each other, a mounting groove being provided on the top of the new bridge and the old bridge, a damper being provided in the mounting groove, an extension plate being provided on the top of the damper, the new bridge and the old bridge being connected by the extension plate, the damper comprising a buffer cylinder and a support rod inserted in the buffer cylinder, the interior of the buffer cylinder being filled with an elastic-plastic filler, one end of the support rod being movably buried in the elastic-plastic filler and connected to the inner wall of the buffer cylinder through a buffer assembly, and the other end of the support rod being connected to the extension plate. The technical solution of the utility model is to provide a buffer assembly between the support rod and the buffer cylinder so that it cooperates with the elastic-plastic filler, thereby being able to better damp and buffer the extension plate, solving the problem that the buffering and damping effect of the existing telescopic device deteriorates due to long-term use, improving the buffering and damping effect of the telescopic device, and ensuring the flatness of the new and old bridges.

[0004] However, it still has the following disadvantages: the device uses an extension plate to support the incision position, but the extension plate cannot be extended. When the new and old bridge bodies undergo different degrees of deformation, the distance between the two bridges will change, causing the connection of the device to break, affecting the use of the device. To this end, we proposed a telescopic device for bridge widening to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to provide a telescopic device for widening a bridge to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic device for widening a bridge, comprising a bridge body, two end surfaces of the bridge bodies close to each other are fixedly connected with a water guide plate, a telescopic device is arranged between the two bridge bodies, and the telescopic device comprises a mounting portion;

[0007] The mounting part includes a mounting plate, a screw, a mounting shell, a concrete layer and a silicone layer. The outer surface of the bottom end of the screw is fixed through the top surface of the mounting plate and the inner wall of the bridge body and extends into the inside of the bridge body. The concrete layer is arranged below the mounting shell, and the silicone layer is arranged above the concrete layer.

[0008] A telescopic portion is provided between the two bridge bodies;

[0009] The telescopic part includes a support plate, a sliding rod and a stop block. A cavity is arranged inside the mounting shell on the left side. The outer surface of the left end of the sliding rod slides through the right end surface of the mounting shell on the left side and extends to the inside of the mounting shell on the left side. The left end surface of the sliding rod is fixedly connected to the right end surface of the stop block. A first sliding groove is provided on the left end surface of the mounting shell on the right side. The right end surface of the support plate extends into the first sliding groove and is slidably connected to the inner wall of the first sliding groove.

[0010] A further improvement is that a mounting groove is provided on the top surface of the mounting shell, the thread on the outer surface of the top end of the screw penetrates the bottom surface of the mounting shell and extends into the mounting groove, and a nut is provided on the threaded sleeve on the outer surface of the top end of the screw. By setting the screw, the device can be fixedly connected to the bridge body.

[0011] A further improvement is that the mounting portion also includes a baffle, the outer surface of the mounting plate is fixedly connected to the outer surface of the baffle, a groove is provided on the inner wall of the bridge body, the top outer surface of the mounting plate extends into the interior of the groove and is slidably connected to the inner wall of the groove, and the baffle is provided to facilitate pouring of concrete.

[0012] A further improvement is that the telescopic part also includes a first spring, a support block, a trapezoidal block, a second spring and a third spring. The support block is slidably sleeved on the outer surface of the sliding rod, and the left end face of the trapezoidal block is fixedly connected to the right end face of the sliding rod. By arranging the sliding rod, the trapezoidal block and the support block, it is convenient to support the two bridge bodies.

[0013] A further improvement is that the inner wall of the left mounting shell is fixedly connected to the left end of the third spring, and the right end of the mounting shell is fixedly connected to the left end face of the block. By setting the third spring, when the right side of the trapezoidal block is squeezed by the right bridge body, the third spring is shortened.

[0014] A further improvement is that a second slide groove is opened on the outer surface of the support block and the outer surface of the trapezoidal block, the outer surface of the support plate extends into the second slide groove and is slidably connected to the inner wall of the second slide groove, the outer surface of the support block is fixedly connected to the outer surface of the second spring on the adjacent side, and by setting the support plate and the second spring, when the left end face of the support plate is squeezed against the left bridge body, the second spring is shortened.

[0015] A further improvement is that the right end of the first spring is fixedly connected to the inner wall of the right mounting shell, and the left end of the first spring is fixedly connected to the right end surface of the support plate. By setting the first spring, the support blocks are evenly distributed on the outer surface of the slide rod, thereby improving the safety of the vehicle passing between the two bridge bodies.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the telescopic device for widening a bridge, by setting a first spring, a support plate, a support block, a trapezoidal block, a sliding rod, a stopper and a third spring, utilizes the elastic force of the first spring to enable the support plate to move left and right, utilizes the elastic force of the third spring to enable the trapezoidal block and the sliding rod to move left and right, when the bridge bodies on both sides are close to each other, the first spring and the third spring are both compressed to prevent the trapezoidal block and the support plate from being squeezed by the bridge bodies, and when the two bridge bodies are away from each other, the support plate and the support block are connected to enable the support plate and the support block to support the gap between the two bridge bodies; by setting a second spring, utilizing the elastic force of the second spring, multiple support blocks are evenly distributed on the outer surface of the sliding rod extending out of the mounting shell; by arranging a baffle plate, a mounting plate, a screw rod, a mounting shell, a concrete layer and a silicone layer, utilizing the baffle plate is convenient for pouring concrete, utilizing the screw rod is convenient for installing and positioning the mounting shell, and utilizing the silicone layer to fill the gap between the mounting shell and the bridge body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a top cross-sectional view of the three-dimensional structure of the utility model;

[0019] Figure 3 for Figure 2 A magnified view of the structure at center;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 5 It is a partial schematic diagram of the three-dimensional structure of the utility model.

[0022] In the figure: 1 bridge body, 2 water guide plate, 4 telescopic device, 41 mounting part, 42 telescopic part, 411 baffle, 412 mounting plate, 413 screw, 414 mounting shell, 415 concrete layer, 416 silicone layer, 421 first spring, 422 support plate, 423 support block, 424 trapezoidal block, 425 second spring, 426 sliding rod, 427 baffle, 428 third spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5The utility model provides a technical solution: a telescopic device for widening a bridge, comprising a bridge body 1, a water guide plate 2 is fixedly connected to the end faces of the two bridge bodies 1 on the adjacent sides, a telescopic device 4 is arranged between the two bridge bodies 1, and the telescopic device 4 includes a mounting portion 41;

[0025] The mounting portion 41 includes a mounting plate 412, a screw 413, a mounting shell 414, a concrete layer 415 and a silicone layer 416. The outer surface of the bottom end of the screw 413 is fixed through the top surface of the mounting plate 412 and the inner wall of the bridge body 1 and extends to the inside of the bridge body 1. The concrete layer 415 is arranged below the mounting shell 414, and the silicone layer 416 is arranged above the concrete layer 415. The mounting portion 41 also includes a baffle 411.

[0026] The outer surface of the mounting plate 412 is fixedly connected to the outer surface of the baffle 411, and a groove is provided on the inner wall of the bridge body 1. The outer surface of the top end of the mounting plate 412 extends into the groove and is slidably connected to the inner wall of the groove.

[0027] The top surface of the installation shell 414 is provided with an installation groove, the top outer surface thread of the screw 413 penetrates the bottom surface of the installation shell 414 and extends into the installation groove, and the top outer surface thread of the screw 413 is sleeved with a nut. By arranging the baffle 411, the installation plate 412, the screw 413, the installation shell 414, the concrete layer 415 and the silicone layer 416, the baffle 411 is used to facilitate the pouring of concrete, the screw 413 is used to facilitate the installation and positioning of the installation shell 414, and the silicone layer 416 is used to fill the gap between the installation shell 414 and the bridge body 1;

[0028] A telescopic portion 42 is provided between the two bridge bodies 1;

[0029] The telescopic part 42 includes a support plate 422, a slide bar 426 and a stopper 427. A cavity is provided inside the left mounting shell 414. The outer surface of the left end of the slide bar 426 slides through the right end surface of the left mounting shell 414 and extends to the inside of the left mounting shell 414. The left end surface of the slide bar 426 is fixedly connected to the right end surface of the stopper 427. A first slide groove is provided on the left end surface of the right mounting shell 414. The right end surface of the support plate 422 extends to the inside of the first slide groove and is slidably connected to the inner wall of the first slide groove. The telescopic part 42 also includes a first spring 421, a support block 423, a trapezoidal block 424, a second spring 425 and a third spring 428.

[0030] The support block 423 is slidably sleeved on the outer surface of the slide bar 426, the left end surface of the trapezoidal block 424 is fixedly connected to the right end surface of the slide bar 426, the inner wall of the left mounting shell 414 is fixedly connected to the left end of the third spring 428, the right end of the mounting shell 414 is fixedly connected to the left end surface of the stopper 427, the right end of the first spring 421 is fixedly connected to the inner wall of the right mounting shell 414, and the left end of the first spring 421 is fixedly connected to the right end surface of the support plate 422;

[0031] The outer surfaces of the support block 423 and the trapezoidal block 424 are provided with a second slide groove, and the outer surface of the support plate 422 extends to the inside of the second slide groove and is slidably connected to the inner wall of the second slide groove. By arranging the first spring 421, the support plate 422, the support block 423, the trapezoidal block 424, the slide bar 426, the stopper 427 and the third spring 428, the elastic force of the first spring 421 is utilized to enable the support plate 422 to move left and right, and the elastic force of the third spring 428 is utilized to enable the trapezoidal block 424 and the slide bar 426 to move left and right. When the bridge bodies 1 on both sides are close to each other, the first spring 421 and the third spring 428 are both compressed to prevent the trapezoidal block 424 and the support plate 422 from being squeezed with the bridge body. When the two bridge bodies are away from each other, the support plate 422 is connected to the support block 423 by the support plate 422, so that the support plate 422 and the support block support the gap between the two bridge bodies 1.

[0032] The outer surface of the support block 423 is fixedly connected to the outer surface of the second spring 425 on the adjacent side. By setting the second spring 425 and utilizing the elastic force of the second spring 425 , multiple support blocks 423 are evenly distributed on the outer surface of the slide rod 426 extending out of the mounting shell 414 .

[0033] When in use, the screw rod 413 and the baffle plate 411 are first installed on the bridge body 1, and then the concrete is poured. After the support block 423 and the support plate 422 are assembled, the installation shell 414 is installed downward on the screw rod 413, and the nut is turned to fix the installation shell 414. The silicone layer 416 is filled between the installation shell 414 and the bridge body 1.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic device for widening a bridge, comprising a bridge body (1), characterized in that: The end surfaces of the two bridge bodies (1) on the adjacent sides are fixedly connected with a water guide plate (2), and a telescopic device (4) is arranged between the two bridge bodies (1), and the telescopic device (4) comprises a mounting portion (41); The mounting portion (41) comprises a mounting plate (412), a screw (413), a mounting shell (414), a concrete layer (415) and a silicone layer (416); the outer surface of the bottom end of the screw (413) is fixedly passed through the top surface of the mounting plate (412) and the inner wall of the bridge body (1) and extends into the interior of the bridge body (1); the concrete layer (415) is arranged below the mounting shell (414), and the silicone layer (416) is arranged above the concrete layer (415); A telescopic portion (42) is provided between the two bridge bodies (1); The telescopic portion (42) includes a support plate (422), a slide rod (426) and a stopper (427); a cavity is provided inside the left mounting shell (414); the outer surface of the left end of the slide rod (426) slides through the right end surface of the left mounting shell (414) and extends to the inside of the left mounting shell (414); the left end surface of the slide rod (426) is fixedly connected to the right end surface of the stopper (427); a first slide groove is provided on the left end surface of the right mounting shell (414); the right end surface of the support plate (422) extends to the inside of the first slide groove and is slidably connected to the inner wall of the first slide groove.

2. A telescopic device for widening a bridge according to claim 1, characterized in that: The top surface of the installation shell (414) is provided with an installation groove, the top outer surface of the screw rod (413) has a thread that penetrates through the bottom surface of the installation shell (414) and extends into the inside of the installation groove, and the top outer surface of the screw rod (413) is threadedly sleeved with a nut.

3. A telescopic device for widening a bridge according to claim 1, characterized in that: The mounting portion (41) further comprises a baffle (411), the outer surface of the mounting plate (412) being fixedly connected to the outer surface of the baffle (411), the inner wall of the bridge body (1) being provided with a groove, the outer surface of the top end of the mounting plate (412) extending into the interior of the groove and being slidably connected to the inner wall of the groove.

4. The telescopic device for widening a bridge according to claim 1, characterized in that: The telescopic portion (42) further comprises a first spring (421), a support block (423), a trapezoidal block (424), a second spring (425) and a third spring (428); the support block (423) is slidably sleeved on the outer surface of the slide rod (426); the left end surface of the trapezoidal block (424) is fixedly connected to the right end surface of the slide rod (426).

5. A telescopic device for widening a bridge according to claim 4, characterized in that: The inner wall of the left installation shell (414) is fixedly connected to the left end of the third spring (428), and the right end of the installation shell (414) is fixedly connected to the left end surface of the stopper (427).

6. A telescopic device for widening a bridge according to claim 4, characterized in that: The outer surface of the support block (423) and the outer surface of the trapezoidal block (424) are provided with a second slide groove, the outer surface of the support plate (422) extends into the second slide groove and is slidably connected to the inner wall of the second slide groove, and the outer surface of the support block (423) is fixedly connected to the outer surface of the second spring (425) on the adjacent side.

7. The telescopic device for widening a bridge according to claim 4, characterized in that: The right end of the first spring (421) is fixedly connected to the inner wall of the right mounting shell (414), and the left end of the first spring (421) is fixedly connected to the right end surface of the support plate (422).

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