Special fabricated limiting device for Bailey bridge construction

Abstract

The utility model provides a special assembly type limiting device for constructing a bailey bridge, which is arranged at the lowest part of each bailey piece at the bottom of the bailey bridge, and the bottom of each bailey piece is provided with a concave groove connected with the special assembly type limiting device. The special assembly type limiting device comprises a male head limiting block used in cooperation with the concave groove, further comprises a female head limiting block arranged in the concave groove, and further comprises a bottom plate fixedly connected with the ground and used for supporting the male head limiting block and the female head limiting block. The device further comprises pins used for connecting and fixing the female head limiting block, the male head limiting block and the Bailey pieces, the structure is simple and reasonable, the female head part and the male head part are divided into the female head part and the male head part which correspond to the head part of the Bailey bridge respectively for butt joint and are connected through the special long pins, hole positions can be reserved on the bottom plate of the product to be connected with bridge abutment embedded bolts, and the product is convenient to use. Or the steel plate is directly fixed on the bridge abutment pre-embedded steel plate through welding.

Description

Technical Field

[0001] The utility model relates to the field of Bailey bridges, in particular to a special assembled limiting device for building Bailey bridges. Background Art

[0002] Bailey plates, also known as Bailey frames, Bailey beams or trusses, were first invented by a British engineer during World War II to solve the need for rapid bridge erection during the war and were named after him. They can be used for highway bridges, assembling gantry cranes, guide beams, bridge erection machines, hanging baskets, etc. Bailey truss combined gantry cranes, Bailey plates can be used for highway bridges, assembling gantry cranes, guide beams, bridge erection machines, hanging baskets, etc. Bailey truss combined gantry cranes use assembled highway steel bridge components to assemble gantry frames, and their span and column height are adjustable to adapt to different work sites. They are widely used in highway, railway, municipal, construction, water conservancy and other construction projects, bridge construction prefabrication sites to lift and move prefabricated components, and transport beams beside bridge piers and other on-site construction operations.

[0003] The existing steel temporary bridge limiter is placed at the first abutment of the bridge. It is generally made of ø20 round steel bent or other short materials directly welded on the abutment embedded parts to limit the displacement of the Bailey steel bridge during long-term use. Although this method is simple, it is not safe enough if the bridge has a long service life and frequent traffic. In addition, the limiter cannot be installed in special working conditions such as when there is no electricity at the bridge erection site. Utility Model Content

[0004] The purpose of the utility model is to provide a special assembled limiting device for building a Bailey bridge. The structure is simple and reasonable. It is divided into a female head part and a male head part, which respectively correspond to the first part of the Bailey bridge for docking and are connected with special long pins. The bottom plate of this product can be connected with the embedded bolts of the abutment with reserved holes, or it can be directly fixed on the embedded steel plate of the abutment by welding.

[0005] The purpose of the utility model is achieved in this way:

[0006] A special assembled limiting device for building a Bailey bridge, characterized in that the special assembled limiting device is installed at the bottom of each Bailey piece at the bottom of the Bailey bridge, the bottom of the Bailey piece is provided with a concave groove connected to the special assembled limiting device, there are multiple concave grooves, each of the concave grooves is provided with a special assembled limiting device, the special assembled limiting device fixes and limits the Bailey piece through the concave groove, the special assembled limiting device includes a male limit block used in conjunction with the concave groove, also includes a female limit block arranged inside the concave groove, also includes a bottom plate fixedly connected to the ground for supporting the male limit block and the female limit block, and also includes a pin for connecting and fixing the female limit block, the male limit block and the Bailey piece;

[0007] The male limit block is concave, there are two male limit blocks, the two male limit blocks are symmetrically arranged on both sides of the concave groove, and the notches of the two male limit blocks are facing outwards, the female limit block is a rectangular parallelepiped structure, the female limit block is a hollow structure, the female limit block is arranged in the groove of the concave groove, the male limit block, the female limit block and the concave groove are all provided with connecting holes for convenient pin insertion, the male limit block, the female limit block and the concave groove are firmly fixed together by inserting pins, so as to play a fixing and limiting role;

[0008] Furthermore, the four corners of the male stop block, upper, lower, left and right, are all provided with 45° chamfers;

[0009] Furthermore, the outer surfaces of the male stopper and the female stopper are provided with an elastic layer to prevent scratching of employees and wear of the Bailey sheet;

[0010] Furthermore, the outer surface of the pin is provided with a rubber layer to prevent the male stopper, the female stopper and the Bailey piece from being worn;

[0011] Furthermore, the bottom plate can fix the male limit block and the female limit block by means of reserved holes and pre-embedded bolts in the abutments or directly by welding.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This special assembled limit device does not need to be directly welded to the embedded parts of the abutment by bending round steel or other short materials like the old Bailey bridge to limit the displacement of the Bailey steel bridge during long-term use. As long as the simple female head part and the male head part are respectively connected to the first part of the Bailey bridge and connected with special long pins, the Bailey piece can be firmly fixed, and the base plate can be fixed to the special assembled limit device by means of reserved holes and embedded bolts on the abutment or directly by welding, which can greatly improve the fixing ability of the special assembled limit device. In addition, the device can be repeatedly used after removing the pins, avoiding the waste of resources caused by welding fixation. The resource utilization rate is high and it can be continuously recycled for a long time, thereby reducing the cost of building Bailey bridges and increasing the company's profits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the working drawing of the special assembled limit device.

[0015] Figure 2 This is the working drawing of the male head limit block.

[0016] Figure 3 This is the working drawing of the female limit block.

[0017] Among them, 1 is a Bailey plate, 11 is a concave groove, 2 is a special assembled limit device, 21 is a male limit block, 22 is a female limit block, 23 is a bottom plate, and 24 is a pin. Implementation

[0018] like Figure 1-3 As shown, a special assembled limiting device for building a Bailey bridge is characterized in that the special assembled limiting device 2 is installed at the bottom of each Bailey piece 1 at the bottom of the Bailey bridge, and the bottom of the Bailey piece 1 is provided with a concave groove 11 connected to the special assembled limiting device 2, and there are multiple concave grooves 11, and each concave groove 11 is provided with a special assembled limiting device 2, and the special assembled limiting device 2 fixes and limits the Bailey piece 1 through the concave groove 11, and the special assembled limiting device 2 includes a male head limiting block 21 used in conjunction with the concave groove 11, and also includes a female head limiting block 22 arranged inside the concave groove 11, and also includes a bottom plate 23 fixedly connected to the ground for supporting the male head limiting block 21 and the female head limiting block 22, and also includes a pin 24 for connecting and fixing the female head limiting block 22, the male head limiting block 21 and the Bailey piece 1;

[0019] The male head limit block 21 is concave, and there are two male head limit blocks 21. The two male head limit blocks 21 are symmetrically arranged on both sides of the concave groove 11, and the notches of the two male head limit blocks 21 are facing outward. The female head limit block 22 is a rectangular structure, and the female head limit block 22 is a hollow structure. The female head limit block 22 is arranged in the groove of the concave groove 11. The male head limit block 21, the female head limit block 22 and the concave groove 11 are all provided with connecting holes for facilitating the insertion of the pin 24. The male head limit block 21, the female head limit block 22 and the concave groove 11 are firmly fixed together by inserting the pin 24, thereby playing a fixing and limiting role.

[0020] Furthermore, the male head limiting block 21 is provided with a 45° chamfer α on four corners, namely, upper, lower, left and right corners.

[0021] Furthermore, the outer surfaces of the male stop block 21 and the female stop block 22 are provided with an elastic layer to prevent scratches on employees and wear of the Bailey sheet 1.

[0022] Furthermore, the outer surface of the pin 24 is provided with a rubber layer to prevent the male stop block 21, the female stop block 22 and the Bailey piece 1 from being worn.

[0023] Furthermore, the bottom plate 23 can fix the male stop block 21 and the female stop block 22 by means of reserved holes and pre-embedded bolts in the abutments or directly by welding.

[0024] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A special assembled limit device for Bailey bridge construction, characterized in that: The special assembled limiting device (2) is installed at the bottom of each Bailey plate (1) at the bottom of the Bailey bridge. The bottom of the Bailey plate (1) is provided with a concave groove (11) connected to the special assembled limiting device (2). There are a plurality of concave grooves (11). Each concave groove (11) is provided with a special assembled limiting device (2). The special assembled limiting device (2) fixes and limits the Bailey plate (1) through the concave groove (11). The special assembled limiting device (2) includes a male limit block (21) used in conjunction with the concave groove (11), a female limit block (22) arranged inside the concave groove (11), a bottom plate (23) fixedly connected to the ground and used to support the male limit block (21) and the female limit block (22), and a pin (24) used to connect and fix the female limit block (22), the male limit block (21) and the Bailey plate (1). The male stop block (21) is concave in shape. There are two male stop blocks (21). The two male stop blocks (21) are symmetrically arranged on both sides of the concave groove (11), and the notches of the two male stop blocks (21) are both facing outward. The female stop block (22) is a rectangular parallelepiped structure. The female stop block (22) is a hollow structure. The female stop block (22) is arranged in a groove of the concave groove (11). The male stop block (21), the female stop block (22) and the concave groove (11) are all provided with connecting holes for facilitating the insertion of the pin (24). The male stop block (21), the female stop block (22) and the concave groove (11) are firmly fixed together by inserting the pin (24), thereby playing a fixing and limiting role.

2. According to claim 1, a special assembly type limiter for Bailey bridge construction, characterized in that: The male stop block (21) is provided with a 45° chamfer α at four corners, namely the top, bottom, left and right corners.

3. According to claim 1, a special assembly type limiter for Bailey bridge construction, characterized in that: The outer surfaces of the male stop block (21) and the female stop block (22) are provided with an elastic layer for preventing employees from being scratched and the Bailey sheet (1) from being worn.

4. According to claim 1, a special assembly type limit device for Bailey bridge construction is characterized in that: The outer surface of the pin (24) is provided with a rubber layer for preventing the male stop block (21), the female stop block (22) and the Bailey plate (1) from being worn.

5. According to claim 1, a special assembly type limiter for Bailey bridge construction, characterized in that: The bottom plate (23) can fix the male stop block (21) and the female stop block (22) by means of reserved holes and pre-embedded bolts in the abutment, or directly by welding.

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