Limiting clamp structure for bailey truss of steel trestle

Abstract

The utility model discloses a steel trestle bailey truss limiting clamp structure which comprises a clamping assembly, the clamping assembly comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are designed to be L-shaped, a connecting rod is arranged between the rear end of the upper clamping plate and the rear end of the lower clamping plate, a vibration reduction assembly is arranged on the inner side of the clamping assembly, and the vibration reduction assembly is connected with the clamping assembly. The vibration reduction assembly comprises a stress plate, a fixing cylinder, a vibration reduction spring, a damping plate and a movable rod, the limiting assembly is arranged on the surface close to the outer end of the clamping assembly, and the limiting assembly comprises a screw rod, a nut and a pin shaft. The clamping assemblies capable of adjusting the clamping size are arranged to clamp and limit the connecting position of the bridge floor cross beam and the bailey truss, vibration caused by use of a steel trestle is reduced through the stress plates and the springs, connection of the screw and the nut is stabilized through the plug pins and the stop rods, and loosening and falling are prevented.

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 clamp structure for a steel trestle. Background Art

[0002] With the rapid development of infrastructure construction in my country, the number of concrete construction projects such as tunnels, bridges and roads is increasing, and the quality and efficiency requirements of construction are also getting higher and higher. In the construction of steel trestle, the Bailey beam used is made of manganese steel. In order to ensure the bearing capacity of the Bailey beam, it cannot be welded on it; when the Bailey beam and the distribution beam are erected, the distribution beam needs to be fixed on the distribution beam. At present, most of them are connected by bolts, such as the assembled positioning structure of the Bailey beam of the steel trestle with Chinese patent announcement number CN220888288U. The crossbeam is installed on the Bailey frame by bolts. When the steel trestle is used, vibration will occur. Long-term vibration will cause the bolts to gradually loosen and the Bailey frame to move. For this reason, a more solid steel trestle Bailey frame limit clamp structure is designed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a steel trestle bailey frame limit clamp structure.

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

[0005] The utility model discloses a steel trestle Bailey frame limit clamp structure, comprising a clamping assembly, wherein the clamping assembly comprises an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are L-shaped, and a connecting rod is arranged between the rear ends of the upper clamping plate and the lower clamping plate;

[0006] A vibration reduction assembly, wherein the vibration reduction assembly is arranged on the inner side of the clamping assembly, and the vibration reduction assembly comprises a force-bearing plate, a fixed cylinder, a vibration reduction spring, a damping plate and a movable rod, wherein the fixed cylinder is arranged on the inner side of the force-bearing plate, the vibration reduction spring is arranged at one end of the fixed cylinder, the damping plate is arranged at one end of the vibration reduction spring, and the movable rod is arranged at the other end of the vibration reduction spring;

[0007] A limit assembly is arranged on a surface close to the outer end of the clamping assembly. The limit assembly comprises a screw, a nut and a pin. The nut is threadably matched with the screw, and the pin is arranged between the nut and the screw.

[0008] As a preferred technical solution of the utility model, the connecting rod passes through the rear end of the lower clamping plate and is threadedly matched with the lower clamping plate. The two ends of the connecting rod are screwed to the upper clamping plate, and the upper clamping plate and the lower clamping plate are U-shaped.

[0009] As a preferred technical solution of the present utility model, one end of the fixed cylinder is fixedly connected to the stress plate. The outer side of the fixed cylinder is provided with threads. The damping plate is designed as a ring, and the damping plate is in threaded fit with the fixed cylinder.

[0010] As a preferred technical solution of the present utility model, the damping spring surrounds the outer sides of the fixed cylinder and the movable rod. The damping spring is fixedly connected to the damping plate and the movable rod respectively. The fixed cylinder is sleeved on the outer side of the movable rod.

[0011] As a preferred technical solution of the present utility model, the inner sides of the upper clamping plate and the lower clamping plate are provided with movable grooves adapted to the movable rod. The end of the movable rod is screw-connected to the upper clamping plate and the lower clamping plate through the movable grooves. The stress plate is made of one of polyamide or polypropylene.

[0012] As a preferred technical solution of the present utility model, the screw rod penetrates through the upper clamping plate and the lower clamping plate and is in threaded fit with the nut. Connecting holes adapted to the pin shaft are provided on the outer sides of the nut and the screw rod. A plurality of the connecting holes are equidistantly provided on the outer side of the screw rod.

[0013] As a preferred technical solution of the present utility model, the pin shaft is in threaded fit with the nut and the screw rod respectively through the connecting holes. One end of the pin shaft is designed to be bent, and the bending angle is 91-120 degrees. A retaining rod is penetrated through the other end of the pin shaft, and the retaining rod is designed as a hook.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model clamps and limits the connection part between the bridge deck cross beam and the Bailey truss through a clamping assembly that can adjust the clamping size, reduces the vibration brought by the use of the steel trestle through the stress plate and the spring, and stabilizes the connection between the screw rod and the nut through the pin shaft and the retaining rod to prevent loosening, solving the problem that when the cross beam is installed on the Bailey truss through bolts, vibration will occur during the use of the steel trestle, and the bolts will gradually loosen after long-term vibration, resulting in the displacement of the Bailey truss.

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained according to the provided drawings without creative efforts.

[0017] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the partial structure of the present utility model;

[0021] Figure 3 is a schematic diagram of the partial structure of the vibration damping component;

[0022] Figure 4 is a schematic diagram of the partial structure of the limiting component;

[0023] Figure 5 is an installation schematic diagram of the present utility model;

[0024] In the figure: 100, clamping component; 101, upper clamping plate; 102, lower clamping plate; 103, connecting rod; 200, vibration damping component; 201, force-bearing plate; 202, fixed cylinder; 203, vibration damping spring; 204, damping plate; 205, movable rod; 300, limiting component; 301, screw; 302, nut; 303, pin shaft; 304, retaining rod; 305, connection hole; 400, bridge deck cross beam; 500, Bailey truss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figures 1-5 shown, the present utility model provides a steel trestle Bailey truss limiting clip structure, including a clamping component 100. The clamping component 100 includes an upper clamping plate 101 and a lower clamping plate 102. The upper clamping plate 101 and the lower clamping plate 102 are of L-shaped design, and a connecting rod 103 is provided between the rear ends of the upper clamping plate 101 and the lower clamping plate 102;

[0026] The shock-absorbing assembly 200 is arranged inside the clamping assembly 100. The shock-absorbing assembly 200 includes a force-bearing plate 201, a fixed cylinder 202, a shock-absorbing spring 203, a damping plate 204 and a movable rod 205. The fixed cylinder 202 is arranged inside the force-bearing plate 201. The shock-absorbing spring 203 is arranged at one end of the fixed cylinder 202. The damping plate 204 is arranged at one end of the shock-absorbing spring 203. The movable rod 205 is arranged at the other end of the shock-absorbing spring 203;

[0027] The limiting assembly 300 is arranged on the surface near the outer end of the clamping assembly 100. The limiting assembly 300 includes a screw 301, a nut 302 and a pin shaft 303. The nut 302 is in threaded cooperation with the screw 301. The pin shaft 303 is arranged between the nut 302 and the screw 301.

[0028] Further, in this embodiment, the connecting rod 103 penetrates through the rear end of the lower clamping plate 102 and is in threaded cooperation with the lower clamping plate 102. The two ends of the connecting rod 103 are screwed to the upper clamping plate 101. The upper clamping plate 101 and the lower clamping plate 102 are designed in a U shape. The distance between the upper and lower clamping plates 102 can be adjusted through the connecting rod 103, so as to adjust the clamping size, and thus the clamping and limiting can be carried out according to the bridge deck cross beams 400 and Bailey trusses 500 with different thicknesses.

[0029] In this embodiment, one end of the fixed cylinder 202 is fixedly connected to the force-bearing plate 201. The outer side of the fixed cylinder 202 is provided with threads. The damping plate 204 is designed as a ring. The damping plate 204 is in threaded cooperation with the fixed cylinder 202. Through the threads on the outer side of the fixed cylinder 202, the position of the damping plate 204 on the outer side of the fixed cylinder 202 can be adjusted, so as to adjust the elongation of the shock-absorbing spring 203 and realize the adjustment of the shock-absorbing size of the shock-absorbing spring 203.

[0030] In addition, when stretching the spring, the elongation of the spring is increased and the stiffness of the spring is changed. The stiffness of the spring is inversely proportional to its elongation. When stretching the spring, the stiffness will decrease, thus reducing its shock-absorbing effect. On the contrary, if the spring is compressed, its stiffness will increase and the shock-absorbing effect will also be enhanced accordingly.

[0031] In this embodiment, the shock-absorbing spring 203 is wound around the outer sides of the fixed cylinder 202 and the movable rod 205. The shock-absorbing spring 203 is fixedly connected to the damping plate 204 and the movable rod 205 respectively. The fixed cylinder 202 is sleeved on the outer side of the movable rod 205. The ends of the shock-absorbing spring 203 are fixed by the damping plate 204 and the movable rod 205, and the shock-absorbing spring 203 is stabilized by the damping plate 204 to prevent the shock-absorbing spring 203 from being in a continuous jumping state. And while the shock-absorbing spring 203 is performing shock-absorbing movement, the fixed cylinder 202 moves on the outer side of the movable rod 205.

[0032] In this embodiment, the inner sides of the upper clamping plate 101 and the lower clamping plate 102 are provided with moving grooves adapted to the moving rod 205. The end of the moving rod 205 is screwed to the upper clamping plate 101 and the lower clamping plate 102 through the moving grooves. The stress plate 201 is made of one of polyamide or polypropylene. The moving grooves facilitate the damping movement of the damping spring 203. The material of the stress plate 201 can also play a role in damping the movement. And the elastic force of the damping spring 203 is used to abut against the outer sides of the bridge deck cross beam 400 and the Bailey truss 500.

[0033] In this embodiment, the screw rod 301 passes through the upper clamping plate 101 and the lower clamping plate 102 and is in threaded cooperation with the nut 302. Connecting holes 305 adapted to the pin shaft 303 are provided on the outer sides of the nut 302 and the screw rod 301. A plurality of connecting holes 305 are equidistantly provided on the outer side of the screw rod 301. The connecting holes 305 facilitate the pin shaft 303 to reinforce the connection between the nut 302 and the screw rod 301.

[0034] In addition, holes for connecting with the screw rod 301 are preset on the bridge deck cross beam 400 and the Bailey truss 500, and the nut 302 is fixed outside the holes, so as to realize the connection and limit of the limiting component 300 to the bridge deck cross beam 400 and the Bailey truss 500.

[0035] In this embodiment, the pin shaft 303 is in threaded cooperation with the nut 302 and the screw rod 301 respectively through the connecting holes 305. One end of the pin shaft 303 is designed to be bent, and the bending angle is 91 - 120 degrees. A retaining rod 304 passes through the other end of the pin shaft 303. The retaining rod 304 is designed to be a hook. The design of the pin shaft 303 enables the screw rod 301 to be stuck on the nut 302, and the pin shaft 303 is stuck outside the screw rod 301 through the retaining rod 304. Double reinforcement is carried out through the pin shaft 303 and the retaining rod 304 to prevent the screw rod 301 and the nut 302 from loosening after long-term use.

[0036] Specifically, when limiting the Bailey truss of the steel trestle bridge, according to the sizes of the bridge deck cross beam 400 and the Bailey truss 500, the bridge deck cross beam 400 and the Bailey truss 500 with different thicknesses are clamped and limited. The clamping size of the upper and lower clamping plates 102 is adjusted in advance and fixed by screws. The limiting clamp is clamped on the connecting column of the bridge deck cross beam 400 and the Bailey truss 500. The nut 302 is fixedly installed at the corresponding position in advance, and then the screw rod 301 passes through the limiting clamp, the bridge deck cross beam 400 and the Bailey truss 500, and the screw rod 301 is tightened based on the nut 302.

[0037] Considering the problem that the bolt structure composed of the screw 301 and the nut 302 will become loose after a long time, a pin shaft 303 penetrates horizontally at the connection between the screw 301 and the nut 302. Due to the shape of the pin shaft 303, it can clamp the screw 301 on the nut 302. Then, a retaining rod 304 penetrates through the end of the pin shaft 303, and the pin shaft 303 is clamped outside the screw 301 by the retaining rod 304. Double reinforcement is carried out through the pin shaft 303 and the retaining rod 304 to improve the firmness;

[0038] In order to reduce the wear caused by vibration to the bolt structure, a damping component 200 is arranged between the limit clamp and the bridge deck cross beam 400 and the Bailey truss 500. The vibration force of the bridge deck cross beam 400 and the Bailey truss 500 is conducted to the stress plate 201. The stress plate 201 is damped through a piston structure composed of a damping spring 203 and a fixed cylinder 202 and a movable rod 205. Considering adaptability, the position of the damping plate 204 at the end of the spring can be adjusted outside the fixed cylinder 202 to adjust the damping magnitude of the damping spring 203 and improve the damping effect.

[0039] The upper clamping plate 101, lower clamping plate 102, connecting rod 103, stress plate 201, fixed cylinder 202, damping spring 203, damping plate 204, movable rod 205, screw 301, nut 302, pin shaft 303, retaining rod 304, bridge deck cross beam 400, Bailey truss 500 and other components of the present utility model are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0041] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0042] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "rotary connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A limiting clip structure for a Bailey truss of a steel trestle bridge, characterized in that, It includes a clamping assembly (100), the clamping assembly (100) includes an upper clamping plate (101) and a lower clamping plate (102), the upper clamping plate (101) and the lower clamping plate (102) are of L-shaped design, and a connecting rod (103) is arranged between the rear ends of the upper clamping plate (101) and the lower clamping plate (102); A vibration damping assembly (200), the vibration damping assembly (200) is arranged inside the clamping assembly (100), the vibration damping assembly (200) includes a force-bearing plate (201), a fixed cylinder (202), a vibration damping spring (203), a damping plate (204) and a movable rod (205), the fixed cylinder (202) is arranged inside the force-bearing plate (201), the vibration damping spring (203) is arranged at one end of the fixed cylinder (202), the damping plate (204) is arranged at one end of the vibration damping spring (203), and the movable rod (205) is arranged at the other end of the vibration damping spring (203); A limiting assembly (300), the limiting assembly (300) is arranged on the surface near the outer end of the clamping assembly (100), the limiting assembly (300) includes a screw (301), a nut (302) and a pin shaft (303), the nut (302) is in threaded cooperation with the screw (301), and the pin shaft (303) is arranged between the nut (302) and the screw (301).

2. The steel trestle Bailey truss limit clip structure according to claim 1, characterized in that, The connecting rod (103) penetrates through the rear end of the lower clamping plate (102) and is in threaded cooperation with the lower clamping plate (102), both ends of the connecting rod (103) are screwed to the upper clamping plate (101), and the upper clamping plate (101) and the lower clamping plate (102) are of U-shaped design.

3. The steel trestle Bailey truss limit clip structure according to claim 1, characterized in that, One end of the fixed cylinder (202) is fixedly connected to the force-bearing plate (201), the outer side of the fixed cylinder (202) is provided with threads, the damping plate (204) is of circular ring design, and the damping plate (204) is in threaded cooperation with the fixed cylinder (202).

4. The steel trestle Bailey truss limiting clip structure according to claim 3, characterized in that, The vibration damping spring (203) is wound around the outer sides of the fixed cylinder (202) and the movable rod (205), the vibration damping spring (203) is fixedly connected to the damping plate (204) and the movable rod (205) respectively, and the fixed cylinder (202) is sleeved on the outer side of the movable rod (205).

5. The steel trestle Bailey truss limit clip structure according to claim 4, characterized in that Activity grooves adapted to the movable rod (205) are formed inside the upper clamping plate (101) and the lower clamping plate (102), the end of the movable rod (205) is screwed to the upper clamping plate (101) and the lower clamping plate (102) through the activity grooves, and the force-bearing plate (201) is made of one of polyamide or polypropylene.

6. The steel trestle Bailey truss limit clip structure according to claim 1, characterized in that, The screw rod (301) penetrates through the upper clamping plate (101) and the lower clamping plate (102), and is in threaded fit with the nut (302). Connecting holes (305) adapted to the pin shaft (303) are formed on the outer sides of both the nut (302) and the screw rod (301), and a plurality of the connecting holes (305) are equidistantly formed on the outer side of the screw rod (301).

7. The steel trestle Bailey truss limit clip structure according to claim 6, characterized in that, The pin shaft (303) is in threaded fit with the nut (302) and the screw rod (301) respectively through the connecting holes (305). One end of the pin shaft (303) is designed to be bent, and the bending angle is 91 - 120 degrees. A stop rod (304) penetrates through the other end of the pin shaft (303), and the stop rod (304) is designed to be a hook.

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