Large-span stepped cable bridge

Abstract

The utility model discloses a large-span stepped cable bridge which comprises bridge bodies, the number of the bridge bodies is two, a supporting mechanism is installed between the two bridge bodies, fixing plates are installed on the side faces of the bridge bodies, a first threaded column is fixed between the fixing plates, an adjusting mechanism is installed on the first threaded column, and the adjusting mechanism is connected with the bridge bodies. The adjusting mechanisms are slidably connected with the bridge bodies, connecting lugs are installed on the adjusting mechanisms, and connecting frames are installed on the opposite side faces of the two bridge bodies. Compared with the prior art, through the arrangement of the supporting mechanism, the distance between the bridge bodies is adjusted, the bridge bodies have the axial telescopic adjusting function through the two-way thread transmission and spline guiding composite structure in the supporting mechanism, the positions of the connecting lugs are adjusted through a bevel gear transmission system of the adjusting mechanism, and therefore the distance between the bridge bodies is adjusted. The problem of installation position deviation of an existing building structure and a newly-installed bridge frame is effectively solved, and installation convenience is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, and in particular to a large-span ladder-type cable tray. Background Technology

[0002] Long-span ladder-type cable trays are a highly efficient engineering structure for supporting and protecting cables. Their crossbars are arranged in a stepped pattern, creating an open layout that combines high strength with excellent heat dissipation. Using galvanized steel, aluminum alloy, or stainless steel as primary materials, and through reinforced side and crossbar design, spans of 6-12 meters (up to 30 meters with special designs) can be achieved, significantly reducing the number of uprights and lowering installation costs by more than 30%.

[0003] Existing cable tray support frames are rigidly connected to the building structure by welding or bolting. The prefabrication accuracy of the mounting holes is required to be ±2mm. When the line is expanded or the cable tray is replaced, the position of the connecting lugs of the new cable tray often deviates from the position of the existing support frame, forcing the construction party to enlarge the holes or re-install the reinforcing bars on site. The installation efficiency is very low and there are certain shortcomings. To address this, we propose a large-span ladder-type cable tray. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a large-span ladder-type cable tray.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A long-span ladder-type cable tray includes a tray body, which consists of two sets. A support mechanism is installed between the two sets of tray bodies. A fixing plate is installed on the side of each tray body, and a first threaded post is fixed between the fixing plates. An adjustment mechanism is installed on the first threaded post, and the adjustment mechanism is slidably connected to the tray body. A connecting lug is installed on the adjustment mechanism, and connecting frames are installed on the opposite sides of the two tray bodies.

[0007] Preferably, the support mechanism includes a first support frame, with spline sleeves penetrating both ends of the first support frame. A second support frame is fixed inside the first support frame, and a second adjusting rod is rotatably connected inside the second support frame. A second threaded column is installed at both ends of the second adjusting rod via a coupling. A second threaded sleeve is threadedly connected to the second threaded column, and a movable column is fixed on the second threaded sleeve. The movable column penetrates the spline sleeve and is slidably connected to it via a spline. A connecting plate is fixed on the movable column.

[0008] Preferably, the two second threaded columns have opposite directions of rotation, and the connecting plate is fixed to the cable tray body.

[0009] Preferably, the adjusting mechanism includes a first threaded sleeve threadedly connected to a first threaded post, a first bevel gear fixedly sleeved on the first threaded sleeve, a housing rotatably connected to the first threaded sleeve, a first adjusting rod installed on the top of the housing, the first adjusting rod being inserted into the interior of the housing and connected to a second bevel gear.

[0010] Preferably, the first bevel gear and the second bevel gear are meshing transmissions, the housing and the bridge frame body are slidingly connected, and the connecting lug is fixed to the housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model achieves the adjustment of the spacing between the cable tray bodies by setting up a support mechanism. The composite structure of bidirectional threaded transmission and spline guidance in the support mechanism enables the axial extension and retraction adjustment function between the cable tray bodies. The bevel gear transmission system of the adjustment mechanism realizes the adjustment of the position of the connecting ears, effectively solving the problem of installation position deviation between the existing building structure and the newly installed cable tray, and greatly improving the convenience of installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a large-span ladder-type cable tray proposed in this utility model;

[0014] Figure 2 for Figure 1 Installation diagram of the central adjustment mechanism;

[0015] Figure 3 for Figure 1 A cross-sectional view of the central support mechanism.

[0016] In the diagram: 1. Cable tray body; 2. Fixing plate; 3. First threaded post; 4. Adjustment mechanism; 41. First threaded sleeve; 42. First bevel gear; 43. Housing; 44. First adjusting rod; 45. Second bevel gear; 5. Connecting lug; 6. Support mechanism; 61. First support frame; 62. Spline sleeve; 63. Second support frame; 64. Second adjusting rod; 65. Second threaded post; 66. Second threaded sleeve; 67. Movable post; 68. Connecting plate; 7. Connecting frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-3A large-span ladder-type cable tray includes a cable tray body 1, of which there are two sets. A support mechanism 6 is installed between the two sets of cable tray bodies 1. The support mechanism 6 includes a first support frame 61, with spline sleeves 62 penetrating both ends of the first support frame 61. A second support frame 63 is fixed inside the first support frame 61. A second adjusting rod 64 is rotatably connected inside the second support frame 63. A second threaded post 65 is installed at both ends of the second adjusting rod 64 via a coupling. A second threaded sleeve 66 is threadedly connected to the second threaded post 65. A movable post 67 is fixed on the second threaded sleeve 66. The movable post 67 penetrates the spline sleeve 62 and is slidably connected to it via a spline. A connecting plate 68 is fixed on the movable post 67. The threads of the two second threaded posts 65 have opposite directions. The connecting plate 68 is fixed to the cable tray body 1. A fixing plate 2 is installed on the side of the cable tray body 1. A first threaded post 3 is fixed between the fixing plates 2. An adjusting mechanism 4 is installed on the first threaded post 3. The adjusting mechanism 4 is connected to the cable tray body 1. For sliding connection, the adjusting mechanism 4 is equipped with a connecting ear 5. The adjusting mechanism 4 includes a first threaded sleeve 41 connected to the first threaded post 3 by a thread. A first bevel gear 42 is fixedly sleeved on the first threaded sleeve 41. A housing 43 is rotatably connected to the first threaded sleeve 41. A first adjusting rod 44 is installed on the top of the housing 43. The first adjusting rod 44 is inserted into the interior of the housing 43 and connected to a second bevel gear 45. The first bevel gear 42 and the second bevel gear 45 are meshed and driven. The housing 43 is slidably connected to the cable tray body 1. The connecting ear 5 is fixed to the housing 43. Connecting brackets 7 are installed on the opposite sides of the two cable tray bodies 1. By setting up a support mechanism, the spacing between the cable tray bodies is adjusted. The composite structure of bidirectional threaded transmission and spline guidance in the support mechanism enables the cable tray bodies to have axial telescopic adjustment function. The bevel gear transmission system of the adjusting mechanism realizes the adjustment of the connecting ear position, effectively solving the problem of installation position deviation between existing building structures and newly installed cable trays, and greatly improving the convenience of installation.

[0019] When the spacing between the two sets of cable tray bodies 1 needs to be adjusted, the operator rotates the second adjusting rod 64. The second adjusting rod 64 drives the second threaded column 65, which is coaxial with it, to rotate. Since the threads of the two second threaded columns 65 are in opposite directions, the second threaded sleeves 66 at both ends move synchronously towards or in opposite directions under the action of the threads. The second threaded sleeves 66 push the movable column 67 to slide along the spline sleeve 62. The spline structure ensures linear movement without deviation. The connecting plate 68 at the end of the movable column 67 is fixed to the cable tray body 1, thereby driving the two sets of cable tray bodies 1 to extend and retract synchronously, realizing the span adjustment. When the installation position of the connecting ear 5 needs to be adjusted, the first adjusting rod 44 is rotated. The first adjusting rod 44 drives the second bevel gear 45 to rotate, forming a transmission with the meshing first bevel gear 42. The first bevel gear 42 drives the first threaded sleeve 41 to rotate, causing it to move axially along the fixed first threaded column 3. The housing 43 slides with the first threaded sleeve 41, driving the connecting ear 5 to move synchronously, accurately aligning with the installation hole position of the building structure.

[0020] In summary, compared with the prior art, this utility model achieves the adjustment of the spacing between the cable tray bodies by setting up a support mechanism. The composite structure of bidirectional threaded transmission and spline guidance in the support mechanism enables the cable tray bodies to have axial telescopic adjustment function. The bevel gear transmission system of the adjustment mechanism realizes the adjustment of the position of the connecting ears, effectively solving the problem of installation position deviation between existing building structures and newly installed cable trays, and greatly improving the convenience of installation.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A large-span ladder-type cable bridge comprising a bridge body (1), characterized in that, The quantity of the bridge body (1) is two groups, the support mechanism (6) is installed between two groups of bridge body (1), the side of the bridge body (1) is installed with the fixed plate (2), the first threaded column (3) is fixed between the fixed plate (2), the adjusting mechanism (4) is installed on the first threaded column (3), the adjusting mechanism (4) and the bridge body (1) are slidably connected, the connecting lug (5) is installed on the adjusting mechanism (4), the opposite side of the two bridge body (1) is installed with the connecting frame (7).

2. A cable tray according to claim 1, characterized in that The support mechanism (6) includes the first support frame (61), the two ends of the first support frame (61) are penetrated through the spline sleeve (62), the inside of the first support frame (61) is fixed with the second support frame (63), the second support frame (63) is rotatably connected with the second adjusting rod (64), the two ends of the second adjusting rod (64) are rotatably connected with the second threaded column (65) through the shaft coupling, the second threaded column (65) is rotatably connected with the second threaded sleeve (66) through the threaded connection, the second threaded sleeve (66) is fixed with the movable column (67), the movable column (67) is penetrated through the spline sleeve (62) and is slidably connected with the spline, and the movable column (67) is fixed with the connecting plate (68).

3. A cable tray according to claim 2, characterized in that The screw rotation directions of the two second threaded columns (65) are opposite, and the connecting plate (68) is fixed on the bridge body (1).

4. The cable tray of claim 1, wherein, The adjusting mechanism (4) includes the first threaded sleeve (41) which is rotatably connected with the first threaded column (3), the first bevel gear (42) is fixedly sleeved on the first threaded sleeve (41), the housing (43) is rotatably connected with the first threaded sleeve (41), the first adjusting rod (44) is installed on the top of the housing (43), and the first adjusting rod (44) is inserted into the housing (43) and is connected with the second bevel gear (45).

5. A cable tray according to claim 4, wherein, The first bevel gear (42) and the second bevel gear (45) are in meshing transmission, the housing (43) and the bridge body (1) are slidably connected, and the connecting lug (5) is fixed with the housing (43).

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