Cable trench crossing adjustable temporary bridge

Abstract

The utility model discloses a cable trench crossing adjustable temporary bridge which comprises a main span plate, movable plates are hinged to the two ends of the main span plate respectively, a plurality of supporting columns are connected to the lower surface of the main span plate, each supporting column is composed of an upper supporting pipe and a lower supporting pipe, and the upper end of each lower supporting pipe is movably inserted into the corresponding upper supporting pipe from the lower end of the corresponding upper supporting pipe. The upper supporting pipe and the lower supporting pipe are positioned through positioning pins, a plurality of positioning holes allowing the positioning pins to penetrate through are formed in the upper supporting pipe and the lower supporting pipe respectively, and the positioning holes are evenly distributed in the upper supporting pipe or the lower supporting pipe at intervals from bottom to top. According to the adjustable temporary bridge crossing the cable trench, the height of the temporary bridge can be adjusted, and the adjustable temporary bridge is suitable for cable trenches with different widths. When construction equipment passes through the cable trench through the temporary bridge, the influence on the cable trench can be effectively avoided. The temporary bridge is convenient and fast to adjust and install and high in adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of temporary bridges, and in particular relates to an adjustable temporary bridge across a cable trench. Background Art

[0002] There are many cable trenches in the nuclear power plant area, and a large number of underground pipelines and cables are arranged in the cable trenches. At the construction site, construction machinery often needs to pass through these cable trenches. In the prior art, when construction machinery passes through these cable trenches, in order to ensure that the cable trench below is not damaged by the squeezing of heavy machinery, or the underground pipelines and cables in the cable trench are not damaged, thick steel plates, large sleepers or other padding materials are used to cover them to form a temporary bridge, and the construction machinery is used to pass through the cable trench using the temporary bridge. The existing thick steel plates, large sleepers or other padding materials have uncertain load-bearing effects. When bearing loads, they are easy to squeeze the edges of the cable trench, causing damage to the trench wall, or even overall collapse, thereby affecting the operating safety of the original facilities and lines. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: an adjustable temporary bridge across a cable trench, including a main span plate, movable plates are hinged at both ends of the main span plate, and a plurality of support columns are connected to the lower surface of the main span plate, and the support columns are composed of an upper support tube and a lower support tube. The upper end of the lower support tube is movably inserted into the upper support tube from the lower end of the upper support tube, and the upper support tube and the lower support tube are positioned by positioning pins. The upper support tube and the lower support tube are respectively provided with a plurality of positioning holes for the positioning pins to pass through, and the positioning holes are evenly spaced from bottom to top on the upper support tube or the lower support tube.

[0004] As a preferred embodiment of the above technical solution, the lower surface of the main span plate is provided with a plurality of T-shaped slide rails arranged parallel to each other, the two ends of the T-shaped slide rails are respectively close to the movable plate, a plurality of sliders are installed on the T-shaped slide rails, the sliders have T-shaped slots matching the T-shaped slide rails, the support columns correspond to the sliders one by one, and the upper ends of the upper support tubes are fixedly connected to the corresponding sliders.

[0005] As a preferred embodiment of the above technical solution, the lower end of the lower support tube is fixedly connected to the support circular plate.

[0006] As a preferred embodiment of the above technical solution, one end of the positioning pin is fixedly connected to a limiting plate, the limiting plate is connected to a corresponding slider via a rope, and the other end of the positioning pin is hinged to a limiting strip.

[0007] As a preferred embodiment of the above technical solution, the two ends of the main span plate are respectively fixedly connected with a plurality of spaced fixed plates, the fixed plates are provided with main shaft holes, the two ends of the main span plate are respectively provided with rotating shafts, the rotating shafts can rotatably pass through the main shaft holes on the corresponding fixed plates, connecting plates are respectively provided on both sides of the fixed plates, the connecting plates are provided with side shaft holes for the rotating shafts to movably pass through, and the connecting plates are fixedly connected to the corresponding movable plates.

[0008] As a preferred embodiment of the above technical solution, a plurality of rotating drums are sleeved on the rotating shaft, and the rotating drums are connected to the rotating shaft via a plurality of bearings.

[0009] The utility model has the following beneficial effects: the adjustable temporary bridge across the cable trench of the utility model can adjust the height of the temporary bridge to adapt to cable trenches of different widths. When construction equipment passes through the cable trench using the temporary bridge, it can effectively avoid affecting the cable trench. The temporary bridge itself is easy and quick to adjust and install, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the structure of the positioning pin. DETAILED DESCRIPTION

[0013] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0014] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] like Figure 1-3 As shown, an adjustable bridge across a cable trench comprises a main span board 1, two ends of the main span board 1 are respectively hinged with movable boards 2, the lower surface of the main span board 1 is connected with a plurality of support columns, the support columns are composed of an upper support tube 3 and a lower support tube 4, the upper end of the lower support tube 4 is movably inserted into the upper support tube 3 from the lower end of the upper support tube 3, the upper support tube 3 and the lower support tube 4 are positioned by positioning pins 5, the upper support tube 3 and the lower support tube 4 are respectively provided with a plurality of positioning holes 6 for the positioning pins 5 to pass through, and the positioning holes 6 are evenly spaced from bottom to top on the upper support tube 3 or the lower support tube 4. When in use, the support column is placed inside the cable trench, and the height of the lower support tube 4 is adjusted so that the lower end of the lower support tube 4 contacts the bottom of the cable trench, and the positioning pins 5 are used to position the lower support tube 4. The height of the main span board 1 is higher than the height of both sides of the cable trench, and the movable board 2 naturally droops, and the movable board 2 maintains a certain tilt angle, so that the positions on both sides of the upper end of the cable trench will not be directly stressed. The construction equipment uses the temporary bridge to pass through the cable trench, which will not cause damage to the pipelines and cables inside the cable trench. At the same time, the upper sides of the cable trench are not subjected to force, will not be crushed, and will not collapse.

[0017] Furthermore, the lower surface of the main span plate 1 is provided with two T-shaped slide rails 7 arranged in parallel with each other, and the two ends of the T-shaped slide rails are respectively close to the movable plate 2. Two sliders 8 are installed on the T-shaped slide rail 7, and the sliders 8 have T-shaped slots 9 that match the T-shaped slide rails. The support columns correspond to the sliders 8 one by one, and the upper end of the upper support tube 3 is fixedly connected to the corresponding sliders 8. The position of the support column can be adjusted so that the support column can avoid the pipelines in the cable trench (generally, the pipelines in the cable trench are arranged on the trench walls on both sides of the cable trench through the bridge frame) to prevent the pipelines from being compressed. At the same time, by adjusting the position of the support column, the temporary bridge can adapt to cable trenches of different sizes, ensuring stable support for the temporary bridge and ensuring the stability of the temporary bridge.

[0018] Further, the lower end of the lower support tube 4 is fixedly connected to a support circular plate 10. A rubber pad can also be connected to the support circular plate 10. The support circular plate 10 increases the contact area of ​​the lower end of the lower support tube 4 and reduces damage to the inside of the cable trench.

[0019] Furthermore, one end of the positioning pin 5 is fixedly connected to a limiting plate 11, and the limiting plate 11 is connected to the corresponding slider 8 through a rope 12, and the other end of the positioning pin 5 is hinged to a limiting strip 13. After the positioning pin 5 passes through the positioning hole 6, the limiting strip 13 automatically sags by its own weight, and the limiting plate 11 and the limiting strip 13 are used to prevent the positioning pin 5 from easily slipping out of the positioning hole 6, thereby ensuring the stability of the connection between the upper support tube 3 and the lower support tube 4, and ensuring the safety and stability of the temporary bridge.

[0020] Furthermore, the two ends of the main span plate 1 are respectively fixedly connected with a plurality of fixed plates 14 arranged at intervals, the fixed plates 14 are provided with main shaft holes, the two ends of the main span plate 1 are respectively provided with rotating shafts 15, the rotating shafts 15 can rotatably pass through the main shaft holes on the corresponding fixed plates 14, the two sides of the fixed plates 14 are respectively provided with connecting plates 16, the connecting plates 16 are provided with side shaft holes for the rotating shafts to pass through movably, and the connecting plates 16 are fixedly connected with the corresponding movable plates 2. The main span plate 1 and the movable plate 2 are hinged by the rotating shaft 15, so that the angle between the main span plate 1 and the movable plate 2 can be adjusted as needed, which is convenient for construction equipment to pass through the temporary bridge while protecting the cable trench.

[0021] Furthermore, a plurality of rotating drums 17 are sleeved on the rotating shaft 15, and the rotating drums 17 are connected to the rotating shaft 15 via a plurality of bearings. The rotating drums 17 are rolled at the connection between the main span plate 1 and the movable plate 2, so as to facilitate the construction equipment to pass through the temporary bridge.

[0022] It is worth mentioning that the technical features such as bearings involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0023] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the utility model on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An adjustable temporary bridge across a cable trench, characterized in that: It includes a main span plate, both ends of which are hinged with movable plates, and the lower surface of the main span plate is connected to a plurality of support columns, which are composed of an upper support tube and a lower support tube, and the upper end of the lower support tube is movably inserted into the upper support tube from the lower end of the upper support tube, and the upper support tube and the lower support tube are positioned by positioning pins, and the upper support tube and the lower support tube are respectively provided with a plurality of positioning holes for the positioning pins to pass through, and the positioning holes are evenly spaced from bottom to top on the upper support tube or the lower support tube.

2. The adjustable temporary bridge across the cable trench as claimed in claim 1, characterized in that: The lower surface of the main span plate is provided with a plurality of T-shaped slide rails arranged parallel to each other, the two ends of the T-shaped slide rails are respectively close to the movable plate, a plurality of sliders are installed on the T-shaped slide rails, the sliders have T-shaped grooves matching the T-shaped slide rails, the support columns correspond to the sliders one by one, and the upper ends of the upper support tubes are fixedly connected to the corresponding sliders.

3. The adjustable temporary bridge across the cable trench as claimed in claim 2, characterized in that: The lower end of the lower support tube is fixedly connected to the support circular plate.

4. The adjustable temporary bridge across the cable trench as claimed in claim 2, characterized in that: One end of the positioning pin is fixedly connected to a limiting plate, the limiting plate is connected to a corresponding sliding block through a rope, and the other end of the positioning pin is hinged to a limiting strip.

5. The adjustable temporary bridge across the cable trench as claimed in claim 1, characterized in that: The two ends of the main span plate are respectively fixedly connected with a plurality of fixed plates arranged at intervals, and the fixed plates are provided with main shaft holes. The two ends of the main span plate are respectively provided with rotating shafts, and the rotating shafts can rotatably pass through the main shaft holes on the corresponding fixed plates. Connecting plates are respectively provided on both sides of the fixed plates, and the connecting plates are provided with side shaft holes for the rotating shafts to movably pass through. The connecting plates are fixedly connected to the corresponding movable plates.

6. The adjustable temporary bridge across the cable trench as claimed in claim 5, characterized in that: A plurality of rotating drums are sleeved on the rotating shaft, and the rotating drums are connected to the rotating shaft via a plurality of bearings.

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