Railway bridge large-expansion-and-contraction-amount expansion and contraction device

Abstract

The utility model discloses a railway bridge large expansion and contraction amount expansion and contraction device which comprises two parallel sectional materials, a plurality of anchoring assemblies are arranged on the outer sides of the sectional materials, a plurality of sets of supporting assemblies are arranged between the two sectional materials, each supporting assembly comprises a connecting rod, a sleeve, a first connecting piece and a second connecting piece, the sleeves are welded to the two ends of the connecting rod, and the first connecting piece and the second connecting piece are welded to the two ends of the connecting rod. The two ends of the sleeves are movably connected to the first connecting piece and the second connecting piece through bolts and nuts respectively, so that one sleeve can move on the first connecting piece, and the other sleeve can rotate on the second connecting piece. The waterproof rubber belt is prevented from falling and being damaged too early due to accumulation of dust and rainwater in the beam joint, the service life of the beam end expansion joint is further prolonged, the structure is simple, cost is low, and rapid production can be achieved.

Description

Technical Field

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

[0002] The expansion amount of the general design of the expansion joint of my country's railway bridges is 30-200, which is the expansion amount of a single expansion joint. When the expansion amount is greater than 200mm, special design is required to adapt to the beam gap value and expansion amount requirements. When the beam gap value is greater than 500mm or the expansion amount is greater than 500mm, it is impossible to lay the track sleepers, and a large displacement expansion device is required to support the track, and the structure is relatively complex. For the medium expansion single seam expansion device within the expansion amount range of 200-500mm, there is no need to design a special support structure for the track. What needs to be considered is the waterproofing, dust accumulation and traffic safety between the beam gaps. The traditional medium expansion expansion joint is installed with a wide waterproof rubber belt. After long-term use, the waterproof rubber belt accumulates water and dust seriously, resulting in falling, causing more water and dust accumulation, and easily causing damage to the waterproof rubber belt. Sometimes, the waterproof rubber belt is set with a porous shape in the cross section to increase its anti-deformation ability, but it is often difficult to play the role of anti-falling, and it causes production difficulties and high costs. Utility Model Content

[0003] The utility model aims to provide a large telescopic device for railway bridges to solve the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a large telescopic telescopic device for a railway bridge, comprising two parallel profiles, a plurality of anchoring assemblies are arranged on the outer sides of the profiles, a plurality of supporting assemblies are arranged between the two profiles, the supporting assemblies comprise a connecting rod, a sleeve, a first connecting piece and a second connecting piece, the sleeve is welded on both ends of the connecting rod, the two ends of the sleeve are movably connected to the first connecting piece and the second connecting piece by bolts and nuts respectively, the first connecting piece comprises an adjusting plate and a first L plate, the adjusting plate is welded on the first L plate, the first L plate is connected to the profile by bolts, a strip hole is provided on the adjusting plate, the bolts penetrate the strip hole and the sleeve in sequence and are then locked by nuts, so that the sleeve can move in the strip hole along with the bolts, the second connecting piece comprises a second L plate, the horizontal plate and the vertical plate of the second L plate are both provided with through holes, the bolts penetrate the through holes and another sleeve in sequence and are then locked by nuts, so that the sleeve can rotate with the bolts as the axis.

[0006] Furthermore, the spacing between two adjacent anchoring assemblies is equal, and the anchoring assemblies include an L-shaped anchoring steel bar and an insert rod, one end of the L-shaped anchoring steel bar is welded to the insert rod, and the insert rod is inserted into the profile.

[0007] Furthermore, the profile includes an upper steel plate, a lower steel plate and a foam plate, the upper steel plate and the lower steel plate sandwich the foam plate, and the insertion rod is inserted into the foam plate.

[0008] Furthermore, the top of the middle portion of the connecting rod is raised, and a rubber sealing strip is provided at the raised position.

[0009] Compared with the prior art, the beneficial technical effects of the utility model are:

[0010] The utility model prevents the accumulation of dust and rainwater between beam joints from causing the waterproof rubber belt to fall and premature damage of the waterproof rubber belt, further prolongs the service life of the expansion joint at the beam end, and has a simple structure, low cost and can be produced quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model will be further described below in conjunction with the accompanying drawings.

[0012] Figure 1 It is a top view of the large telescopic telescopic device for railway bridge of the utility model;

[0013] Figure 2 It is a side sectional view of the large telescopic telescopic device for railway bridge of the utility model;

[0014] Figure 3 It is the front view of the connecting rod;

[0015] Figure 4 It is a top view of the connecting rod;

[0016] Figure 5 This is a schematic diagram of rubber sealing strip bonding;

[0017] Figure 6 is a top view of the first connecting member;

[0018] Figure 7 is a top view of the second connecting member;

[0019] Explanation of the accompanying drawings: 1. Profile; 101. Upper steel plate; 102. Lower steel plate; 103. Foam plate; 2. Connecting rod; 3. Sleeve; 4. First connecting piece; 401. Adjusting plate; 402. First L-plate; 5. Second connecting piece; 501. Second L-plate; 502. Through hole; 6. Strip hole; 7. L-shaped anchor steel bar; 8. Insert rod; 9. Rubber sealing strip. DETAILED DESCRIPTION

[0020] like Figure 1-7 As shown, a large telescopic device for a railway bridge comprises two parallel profiles 1, wherein the profile 1 comprises an upper steel plate 101, a lower steel plate 102 and a foam plate 103, wherein the upper steel plate 101 and the lower steel plate 102 sandwich the foam plate 103, and the insertion rod 8 is inserted into the foam plate 103.

[0021] A plurality of anchoring assemblies are provided on the outer side of the profile 1, and the spacing between two adjacent anchoring assemblies is equal. The anchoring assemblies include an L-shaped anchoring steel bar 7 and an insert rod 8. One end of the L-shaped anchoring steel bar 7 is welded to the insert rod 8, and the insert rod 8 is inserted into the profile 1.

[0022] Several groups of supporting components are arranged between the two profiles 1, and the supporting components are used to prevent the waterproof rubber belt from sagging. The supporting components include a connecting rod 2, a sleeve 3, a first connecting member 4 and a second connecting member 5. The sleeve 3 is welded to both ends of the connecting rod 2. The middle top of the connecting rod 2 is raised, and a rubber sealing strip 9 is provided at the raised position to prevent damage to the waterproof rubber belt.

[0023] The two ends of the sleeve 3 are movably connected to the first connecting member 4 and the second connecting member 5 by bolts and nuts respectively. The first connecting member 4 includes an adjusting plate 401 and a first L plate 402. The adjusting plate 401 is welded to the first L plate 402. The first L plate 402 is connected to the profile 1 by bolts. The adjusting plate 401 is provided with a strip hole 6. The bolts pass through the strip hole 6 and the sleeve 3 in sequence and are locked by nuts, so that the sleeve can move in the strip hole 6 with the bolts. The second connecting member 4 includes an adjusting plate 401 and a first L plate 402.

[0024] The connecting member 5 includes a second L-shaped plate 501, and a through hole 502 is provided on both the horizontal plate and the vertical plate of the second L-shaped plate 501. The bolt passes through the through hole 502 and another sleeve 3 in sequence and is locked by a nut, so that the sleeve 3 can rotate around the bolt as the axis. One end of the connecting rod can rotate, and the other end can be inserted into the strip hole 6 to meet the requirements of telescopic deformation.

[0025] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A large telescopic device for railway bridges, characterized in that: The invention comprises two parallel profiles (1), wherein a plurality of anchoring assemblies are arranged on the outer sides of the profiles (1), and a plurality of supporting assemblies are arranged between the two profiles (1), wherein the supporting assemblies comprise a connecting rod (2), a sleeve (3), a first connecting member (4) and a second connecting member (5), wherein the sleeve (3) is welded to both ends of the connecting rod (2), and the two ends of the sleeve (3) are movably connected to the first connecting member (4) and the second connecting member (5) by bolts and nuts, respectively, and the first connecting member (4) comprises an adjusting plate (401) and a first L plate (402), wherein the adjusting plate (401) is welded to the first The first L-plate (402) is connected to the profile (1) by bolts, the adjusting plate (401) is provided with a strip hole (6), the bolts sequentially penetrate the strip hole (6) and the sleeve (3) and are then locked by nuts, so that the sleeve can move in the strip hole (6) along with the bolts, the second connecting member (5) comprises a second L-plate (501), the horizontal plate and the vertical plate of the second L-plate (501) are both provided with through holes (502), the bolts sequentially penetrate the through holes (502) and another sleeve (3) and are then locked by nuts, so that the sleeve (3) can rotate with the bolts as the axis.

2. The large telescopic device for railway bridge according to claim 1 is characterized in that: The spacing between two adjacent anchoring assemblies is equal, and the anchoring assemblies include an L-shaped anchoring steel bar (7) and an insertion rod (8), one end of the L-shaped anchoring steel bar (7) is welded to the insertion rod (8), and the insertion rod (8) is inserted into the profile (1).

3. The large telescopic device for railway bridge according to claim 2 is characterized in that: The profile (1) comprises an upper steel plate (101), a lower steel plate (102) and a foam plate (103); the upper steel plate (101) and the lower steel plate (102) sandwich the foam plate (103); and the insertion rod (8) is inserted into the foam plate (103).

4. The large telescopic device for railway bridge according to claim 1 is characterized in that: The middle top of the connecting rod (2) is raised, and a rubber sealing strip (9) is provided at the raised position.

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