Limiting device for bailey truss of steel trestle

Abstract

The utility model discloses a steel trestle bailey truss limiting device which comprises a limiting piece, a limiting groove is formed in the front side of the limiting piece, the limiting groove is of a U-shaped design, a fastener is arranged on the inner side of the limiting groove and comprises a fastening plate, a spring and a fixing plate, the spring is arranged on the rear side of the fastening plate, the fixing plate is arranged at the end of the spring, and the spring is arranged on the fixing plate. The positioning pieces are arranged at the upper end and the lower end of one side of the limiting piece and comprise rotating blocks, threaded rods, mounting plates and positioning blocks, the rotating blocks are fixed to one ends of the threaded rods, the threaded rods penetrate through the mounting plates and the limiting piece, and the positioning blocks are arranged at the other ends of the threaded rods. The fixing device is clamped at the connecting position of the bridge floor beam and the bailey truss through the limiting groove in the limiting piece, the fastening plate abuts against the connecting position through the acting force of the spring, the fixing effect is enhanced through the positioning piece, displacement of the bailey truss is limited, and the fixing device is simple in structure, convenient to construct and suitable for various types of bailey trusses and bridge floor beams.

Description

Technical Field

[0001] The utility model relates to but is not limited to the technical field of bridge construction, and in particular to a Bailey frame limiting device for a steel trestle. Background Art

[0002] A steel trestle is a temporary steel structure bridge used during bridge construction or maintenance. It is usually made of steel and has a high load-bearing capacity and stability. It is used to temporarily replace the original bridge for transportation. Compared with conventional bridges, temporary steel trestles can be built more quickly to meet the needs of temporary bridges. According to the requirements of use, the steel trestle consists of steel pipe piles, scissor braces connecting steel casings, main beams on the top of steel pipe piles, Bailey frames, bridge deck beams and bridge panels. The Bailey frame is located between the main beam on the top of the pile and the bridge deck beam. After the Bailey frame is erected, its displacement needs to be restricted to prevent it from moving.

[0003] After searching the patent publication number CN209703315U, the Bailey beam connection mechanism is connected to the Bailey beam through a U-shaped clip, and then the U-shaped clip is connected to the beam structure by welding. Although the problem of protruding U-shaped bolts is solved, the trestle beam still needs to be connected by welding during installation. During the early installation and subsequent disassembly, installation and disassembly are more difficult, which increases the construction time. For this reason, a steel trestle Bailey frame limit device is designed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a Bailey frame limiting device for a steel trestle.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a steel trestle Bailey frame limiting device, comprising a limiting piece, a limiting groove is arranged on the front side of the limiting piece, and the limiting groove is U-shaped;

[0007] A fastener, the fastener is arranged at the inner side of the limiting groove, the fastener comprises a fastening plate, a spring and a fixing plate, the spring is arranged at the rear side of the fastening plate, and the fixing plate is arranged at the end of the spring;

[0008] A positioning member, wherein the positioning member is arranged at the upper and lower ends of one side of the limiting member, and the positioning member comprises a rotating block, a threaded rod, a mounting plate and a positioning block, wherein the rotating block is fixed to one end of the threaded rod, the threaded rod passes through the mounting plate and the limiting member, and the positioning block is arranged at the other end of the threaded rod.

[0009] As a preferred technical solution of the utility model, the inner side of the limiting groove is provided with symmetrical fasteners, the springs are fixed at both ends of the fixing plate, and the inner side of the limiting member is provided with a movable groove for the spring to move.

[0010] As a preferred technical solution of the utility model, the end of the spring on one side of the fixed plate is fixedly connected to the fastening plate, and the end of the spring on the other side is connected to the limit member. Guide blocks are provided on both sides of the fixed plate, and guide grooves adapted to the guide blocks are opened on the inner wall of the movable groove.

[0011] As a preferred technical solution of the utility model, a clamping block is fixed on the outer side of the guide block, a clamping groove adapted to the clamping block is opened on the inner wall of the guide groove, the clamping block is made of rubber, and a rubber gasket is fixed on the surface of the fastening plate.

[0012] As a preferred technical solution of the utility model, the mounting plate is screwed to the limiting member, a through hole adapted to the threaded rod is provided on one side of the limiting member, and the threaded rod is threadedly matched with the mounting plate and the limiting member.

[0013] As a preferred technical solution of the utility model, the positioning block is threadedly matched with the threaded rod, and the positioning block is made of wear-resistant rubber material.

[0014] As a preferred technical solution of the utility model, the limiter is made of a material selected from martensitic stainless steel or duplex stainless steel.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The utility model clamps the limit groove on the limit piece at the connection between the bridge deck cross beam and the Bailey frame, and uses the action force of the spring to press the fastening plate against the connection position, strengthens the firm effect through the positioning piece, limits the displacement of the Bailey frame, and is convenient for construction through a simple structure. It can be applicable to various types of Bailey frames and bridge deck cross beams, and solves the problem that the connection of the trestle cross beams by welding during installation is difficult in the early installation and subsequent disassembly, which increases the construction time.

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the split structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of part A of the split structure schematic diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the installation of the limiter for the bridge deck cross beam and the Bailey frame;

[0024] In the figure: 100, limit member; 101, limit groove; 102, through hole; 103, movable groove; 104, guide groove; 200, fastener; 201, fastening plate; 202, spring; 203, fixing plate; 204, guide block; 205, clamping block; 300, positioning member; 301, rotating block; 302, threaded rod; 303, mounting plate; 304, positioning block; 400, bridge deck beam; 500, Bailey frame. DETAILED DESCRIPTION

[0025] like Figure 1-4 As shown, the utility model provides a steel trestle bailey frame limiting device, comprising a limiting member 100, a limiting groove 101 is provided on the front side of the limiting member 100, and the limiting groove 101 is U-shaped;

[0026] The fastener 200 is arranged on the inner side of the limiting groove 101. The fastener 200 includes a fastening plate 201, a spring 202 and a fixing plate 203. The spring 202 is arranged on the rear side of the fastening plate 201, and the fixing plate 203 is arranged on the end of the spring 202;

[0027] The positioning member 300 is arranged at the upper and lower ends of one side of the limiting member 100. The positioning member 300 includes a rotating block 301, a threaded rod 302, a mounting plate 303 and a positioning block 304. The rotating block 301 is fixed to one end of the threaded rod 302. The threaded rod 302 passes through the mounting plate 303 and the limiting member 100. The positioning block 304 is arranged at the other end of the threaded rod 302.

[0028] Furthermore, in this embodiment, a symmetrical fastener 200 is provided on the inner side of the limiting groove 101, springs 202 are fixed at both ends of the fixing plate 203, and a movable groove 103 for the spring 202 to move is opened on the inner side of the limiting member 100. The spring 202 moves on the limiting member 100 through the movable groove 103 to realize the movement of the fastening plate 201.

[0029] In this embodiment, the end of the spring 202 on one side of the fixed plate 203 is fixedly connected to the fastening plate 201, and the end of the spring 202 on the other side is connected to the limit member 100. Guide blocks 204 are provided on both sides of the fixed plate 203. Guide grooves 104 adapted to the guide blocks 204 are opened on the inner wall of the movable groove 103. Through the guide blocks 204 on both sides of the fixed plate 203, the part of the spring 202 in the movable groove 103 can move along the guide groove 104 when compressed, thereby preventing the spring 202 from being squeezed and deformed.

[0030] In this embodiment, a clamping block 205 is fixed to the outer side of the guide block 204, and a clamping groove adapted to the clamping block 205 is opened on the inner wall of the guide groove 104. The clamping block 205 is made of rubber, and a rubber gasket is fixed to the surface of the fastening plate 201. The coordination between the clamping block 205 and the clamping groove improves the stability of the movement of the guide block 204. The material of the clamping block 205 enables it to be elastically retracted. The rubber gasket makes the contact between the fastening plate 201 and the bridge deck beam 400 and the Bailey frame 500 more stable and less prone to slipping.

[0031] In this embodiment, the mounting plate 303 is screwed to the limiting member 100, and the threaded rod 302 is fixed by the mounting plate 303, playing the role of a nut. A through hole 102 adapted to the threaded rod 302 is opened on one side of the limiting member 100, and the threaded rod 302 is threadedly matched with the mounting plate 303 and the limiting member 100, and the through hole 102 facilitates the threaded rod 302 to pass through the limiting member 100.

[0032] In this embodiment, the positioning block 304 is threadedly matched with the threaded rod 302 to facilitate replacement of the threaded rod 302. The positioning block 304 is made of wear-resistant rubber material, such as EPDM rubber, fluororubber and other wear-resistant rubbers. The positioning block 304 is controlled by the threaded rod 302 to move inward and abut against the bridge deck beam 400 and the Bailey frame 500.

[0033] In this embodiment, the limiting member 100 is made of a material selected from martensitic stainless steel or duplex stainless steel. The material of the limiting member 100 improves its corrosion resistance and prevents it from being exposed to corrosion for a long time, thereby affecting the limiting effect.

[0034] Specifically, first determine the model and size of the Bailey frame 500 and the bridge deck cross beam 400, and then design a corresponding limiter 100 for fixing the Bailey frame 500 and the bridge deck cross beam 400. The limiter 100 is clamped at the connection between the bridge deck cross beam 400 and the Bailey frame 500 through the limiter groove 101 on the front side. When clamped, the fastening plate 201 is stretched open, and the spring 202 on the rear side of the fastening plate 201 is compressed. The spring 202 moves stably in the guide groove 104 through the guide block 204 on the fixing plate 203. Based on the action force of the spring 202, the fastening plate 201 can be tightly attached to the Bailey frame 500 and the bridge deck cross beam 400, so as to limit the connection between the Bailey frame 500 and the bridge deck cross beam 400.

[0035] Considering that the spring 202 will produce fatigue after long-term use, positioning members 300 are provided on the upper and lower sides of the limiting member 100. After the limiting member 100 is installed, the screw is controlled to rotate by the rotating block 301, and the screw passes through the mounting plate 303 and moves inward through the through hole 102 until the positioning block 304 at the lower end of the screw abuts against the Bailey frame 500 and the bridge deck crossbeam 400, and the positioning block 304 is squeezed based on the material of the positioning block 304 to position the limiting member 100;

[0036] The positioning block 304 at the bottom of the threaded rod 302 can be installed according to actual conditions. When the load-bearing capacity of the Bailey frame 500 and the bridge deck beam 400 is large, nuts can be preset on the Bailey frame 500 and the bridge deck beam 400, and the threaded rod 302 is passed through the Bailey frame 500 and the bridge deck beam 400 until it is connected with the nut to form a bolt structure. The Bailey frame 500 and the bridge deck beam 400 are limited by tightening and positioning at the same time, thereby improving the limiting effect of the limiting member 100.

[0037] The components of the utility model, such as the limit member 100, fastener 200, fastening plate 201, spring 202, fixing plate 203, guide block 204, clamping block 205, positioning member 300, rotating block 301, threaded rod 302, mounting plate 303, positioning block 304, bridge deck beam 400, Bailey frame 500, etc., are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0038] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A Bailey frame limit device for a steel trestle, characterized in that: It comprises a limiting member (100), wherein a limiting groove (101) is provided on the front side of the limiting member (100), and the limiting groove (101) is U-shaped; A fastener (200), the fastener (200) being arranged on the inner side of the limiting groove (101), the fastener (200) comprising a fastening plate (201), a spring (202) and a fixing plate (203), the spring (202) being arranged on the rear side of the fastening plate (201), and the fixing plate (203) being arranged on the end of the spring (202); A positioning member (300), wherein the positioning member (300) is arranged at the upper and lower ends of one side of the limiting member (100), and the positioning member (300) comprises a rotating block (301), a threaded rod (302), a mounting plate (303) and a positioning block (304), wherein the rotating block (301) is fixed to one end of the threaded rod (302), the threaded rod (302) passes through the mounting plate (303) and the limiting member (100), and the positioning block (304) is arranged at the other end of the threaded rod (302).

2. A steel trestle Bailey frame limiting device according to claim 1, characterized in that: The inner side of the limiting groove (101) is provided with symmetrical fasteners (200), the two ends of the fixing plate (203) are fixed with the springs (202), and the inner side of the limiting member (100) is provided with a movable groove (103) for the spring (202) to move.

3. A steel trestle Bailey frame limiting device according to claim 2, characterized in that: The end of the spring (202) on one side of the fixed plate (203) is fixedly connected to the fastening plate (201), and the end of the spring (202) on the other side is connected to the limit member (100). Guide blocks (204) are provided on both sides of the fixed plate (203), and a guide groove (104) adapted to the guide block (204) is provided on the inner wall of the movable groove (103).

4. A steel trestle Bailey frame limiting device according to claim 3, characterized in that: A clamping block (205) is fixed on the outer side of the guide block (204), a clamping groove adapted to the clamping block (205) is provided on the inner wall of the guide groove (104), the clamping block (205) is made of rubber, and a rubber gasket is fixed on the surface of the fastening plate (201).

5. The Bailey frame limit device for a steel trestle according to claim 1, characterized in that: The mounting plate (303) is screwed to the limiting member (100); a through hole (102) adapted to the threaded rod (302) is provided on one side of the limiting member (100); and the threaded rod (302) is threadedly matched with the mounting plate (303) and the limiting member (100).

6. A steel trestle Bailey frame limiting device according to claim 5, characterized in that: The positioning block (304) is threadably matched with the threaded rod (302), and the positioning block (304) is made of wear-resistant rubber material.

7. The Bailey frame limit device for a steel trestle according to claim 1, characterized in that: The limiting member (100) is made of a material selected from martensitic stainless steel or duplex stainless steel.

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