A buckle type connecting mechanism of a modular assembled bridge

Abstract

This utility model relates to the field of cable tray technology and proposes a snap-fit ​​connection mechanism for modular assembly cable trays. The design includes a connecting component with cable tray bodies mounted on both sides. Slots are evenly spaced inside the cable tray bodies. The connecting component includes a connecting frame and auxiliary compartments symmetrically fixed to both sides of the connecting frame. A screwing component is located at the connecting frame and auxiliary compartments. The screwing component includes a rotating and locking arm. A pushing component is located in the connecting frame and can be pushed and slid by the arm. Positioning components are evenly spaced inside the connecting frame. The positioning component includes a positioning post that can be pushed by the pushing component and inserted into the slot for positioning. This design solves the problems of increased manual time consumption, inconvenient disassembly and maintenance, and insufficient lateral stability in existing technologies by using mechanical transmission self-locking and multi-point rigid insertion.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, specifically to a snap-fit ​​connection mechanism for modular assembly cable trays. Background Technology

[0002] Cable trays are rigid structural systems used to support, protect, and manage cables and wires, and are widely used in buildings, industrial facilities, and various engineering projects. Their core functions include: supporting cables to prevent sagging and extend their service life; protecting cables from environmental corrosion, such as using trough-type cable trays to shield against interference or hot-dip galvanized cable trays to resist strong corrosion; and enabling centralized cable management through modular design, optimizing space layout and facilitating inspection and maintenance. Based on structure, they can be divided into ladder-type, tray-type, and trough-type, and materials include steel, aluminum alloy, and fiberglass to adapt to different application scenarios. Improving the ease of assembly and disassembly between modular cable trays is a pressing issue that needs to be addressed.

[0003] A search revealed that CN214674115U discloses a snap-fit ​​cable tray, comprising a cable tray body. One end of the cable tray body has a U-shaped cross-section. Snap fasteners are fixedly connected to the inner wall and upper surface of one end of the cable tray body, while the inner wall and upper surface of the other end of the cable tray body have slots adapted to the snap fasteners. This invention utilizes the interplay between the cable tray body, snap fasteners, slots, elongated grooves, and screws. During assembly, one cable tray body is pressed and inserted into the inner side of another cable tray body, causing the snap fasteners to insert into their corresponding slots. At this point, the two cable tray bodies are initially connected. Then, two screws are inserted into their corresponding elongated grooves and locked with nuts to complete the stable connection between the two cable tray bodies. This significantly reduces the use of screws and nuts, lowering material costs. Furthermore, the staggered snap fasteners and screws increase the contact area between them, improving the connection strength between the cable tray bodies.

[0004] The aforementioned snap-fit ​​cable tray uses a snap-fit ​​+ slot initial connection, but still requires secondary tightening through long slots and screws, resulting in low installation efficiency and failure to achieve completely tool-free operation; at the same time, this design only relies on U-shaped grooves and rubber pads for cushioning, lacking a rigid lateral limiting structure, making the cable tray prone to disengagement when vibrating or subjected to lateral force. Utility Model Content

[0005] This utility model proposes a snap-fit ​​connection mechanism for modular assembly cable trays, which solves the problems of increased manual time consumption, inconvenient disassembly and maintenance, and insufficient lateral stability in the prior art due to reliance on screw-assisted fixing.

[0006] The technical solution of this utility model is as follows: A snap-on connection mechanism for modular assembly cable trays, including a connection component, on both sides of the connection component are assembled with cable tray bodies, and slots are equally spaced on the inner side of the cable tray bodies. The connecting component includes a connecting frame and auxiliary compartments symmetrically and fixedly connected to both sides of the connecting frame; The screwing components are installed at the connecting frame and the auxiliary compartment; The twisting assembly includes a lever capable of rotation and rotation locking; A propulsion assembly disposed in the connecting frame and capable of being pushed and slid by the arm; Positioning components are equally spaced inside the connecting frame; The positioning component includes a positioning post that can be pushed forward by the pushing component to complete the insertion positioning within the slot.

[0007] Preferably, the twisting assembly further includes: The main shaft is rotatably connected inside the auxiliary compartment; The worm gear is fixedly connected to the middle of the outer side of the main shaft. Preferably, the twisting assembly further includes: A handle that is fixedly connected to the end of the main shaft; The scale marks are located on the outside of the handle.

[0008] Preferably, the twisting assembly further includes: A secondary rotating shaft is rotatably connected at the junction of the secondary compartment and the connecting frame; A worm gear fixedly connected to the outside of the secondary shaft; The worm gear is in contact with the worm and is meshed and rotatably connected; The end of the secondary rotating shaft is fixedly connected to the arm.

[0009] Preferably, the twisting assembly further includes: Connecting rods symmetrically fixed to both sides of the boom; An arc-shaped top block is fixedly connected to the end of the connecting rod.

[0010] Preferably, the propulsion assembly includes: An inner sliding frame is provided inside the connecting frame; Equally spaced protruding plates are fixedly connected to the outer side of the inner sliding frame; Rotary ball bearings connected to the middle of the convex plate; The inner sliding frame is slidably connected to the inner wall of the connecting frame by ball bearings.

[0011] Preferably, the positioning component includes: A connecting plate fixedly connected to the slotted section around the perimeter of the connecting frame; A limiting rod that is slidably connected to the middle of the connecting plate; The limiting rod and the positioning post are fixedly connected.

[0012] Preferably, the positioning component further includes: A spring coil fitted onto the outside of the limiting rod; The upper end of the spring coil is in contact with the positioning post; The lower end of the spring coil is in contact with the connecting plate.

[0013] Preferably, the positioning component further includes: A slope formed at the top of the positioning post; The slope corresponds to the position of the ball bearing.

[0014] Preferably, the connection component further includes: An internal channel is provided inside the connecting frame; A support platform fixedly connected to the upper and lower sides of the built-in channel; The support platform is fixedly connected to the connecting frame on the side away from the built-in channel.

[0015] The beneficial effects of this utility model are as follows: This design employs a linkage mechanism of worm gear-worm wheel drive + positioning pin insertion to drive the screwing and positioning components. By rotating the handle, the positioning pin is driven to insert into the slot. The self-locking characteristic of the worm wheel enables tool-free fixing, reducing manual labor time and facilitating easy assembly and disassembly. This design features multiple sets of positioning pins that engage with the slots on the inner side of the connecting frame. Through the precise guidance of the ball bearings and the ramp surface of the pushing component, multi-point rigid constraints are formed. This design avoids lateral displacement problems and significantly enhances vibration resistance. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall device of this utility model; Figure 2 This is a split schematic diagram of the connecting components and the cable tray body of this utility model; Figure 3 This is a schematic diagram showing the disassembled connection frame and built-in channel of this utility model; Figure 4 This is a schematic diagram of the screwing component of this utility model; Figure 5 This is a schematic diagram of the propulsion component of this utility model; Figure 6 This is a schematic diagram of the positioning component of this utility model; In the diagram: 1. Connecting assembly; 11. Connecting frame; 12. Sub-compartment; 13. Internal channel; 131. Support platform; 2. Cable tray body; 21. Slot; 3. Tightening assembly; 31. Main shaft; 311. Worm gear; 32. Tightening handle; 321. Scale mark; 33. Sub-shaft; 331. Worm gear; 34. Arm; 341. Connecting rod; 35. Arc-shaped top block; 4. Propulsion assembly; 41. Inner sliding frame; 42. Protruding plate; 421. Ball bearing; 5. Positioning assembly; 51. Connecting plate; 52. Limiting rod; 521. Spring ring; 53. Positioning column; 531. Slope. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0019] For examples, please refer to Figures 1-6 This utility model provides a technical solution: a snap-on connection mechanism for modular assembly cable trays, including a connection component 1, cable tray bodies 2 are assembled on both sides of the connection component 1, and slots 21 are equally spaced on the inner side of the cable tray bodies 2; The connecting component 1 includes a connecting frame 11 and sub-compartments 12 that are symmetrically and fixedly connected to both sides of the connecting frame 11; Tightening components 3 are installed at the connecting frame 11 and the auxiliary compartment 12; The turning assembly 3 includes a lever 34 that can rotate and be locked by rotation; A propulsion component 4 is provided in the connecting frame 11 and can be pushed and slid by the arm 34; Positioning components 5 are evenly spaced inside the connecting frame 11; The positioning component 5 includes a positioning post 53 that can be pushed forward by the pushing component 4 to complete the insertion positioning in the slot 21; This design solves the problems of increased manual time consumption, inconvenient disassembly and maintenance, and insufficient lateral stability in existing technologies by using mechanical transmission self-locking and multi-point rigid plugging.

[0020] Tightening component 3 also includes: The main rotating shaft 31 is rotatably connected inside the auxiliary compartment 12; The worm gear 311 is fixedly connected to the middle of the outer side of the main shaft 31.

[0021] Tightening component 3 also includes: A handle 32 is fixedly connected to the end of the main shaft 31; The scale mark 321 is located on the outside of the handle 32.

[0022] Tightening component 3 also includes: A secondary rotating shaft 33 is rotatably connected at the connection between the secondary compartment 12 and the connecting frame 11; A worm gear 331 is fixedly connected to the outside of the secondary rotating shaft 33; The worm gear 331 is in contact with the worm 311 and is in a meshing rotational connection; The end of the auxiliary shaft 33 is fixedly connected to the boom 34.

[0023] Tightening component 3 also includes: Connecting rods 341 are symmetrically fixedly connected to both sides of the boom 34; The arc-shaped top block 35 is fixedly connected to the end of the connecting rod 341.

[0024] Propulsion component 4 includes: An inner sliding frame 41 is provided inside the connecting frame 11; The protruding plates 42 are fixedly connected to the outer side of the inner sliding frame 41 at equal intervals; Rotary ball bearing 421 connected to the middle of the convex plate 42; The inner sliding frame 41 is slidably connected to the inner wall of the connecting frame 11 via ball bearings 421.

[0025] Positioning component 5 includes: A connecting plate 51 is fixedly connected to the slotted section around the connecting frame 11; A limiting rod 52 is slidably connected to the middle part of the connecting plate 51; The limiting rod 52 and the positioning post 53 are fixedly connected.

[0026] Positioning component 5 also includes: A spring ring 521 is fitted onto the outside of the limiting rod 52; The upper end of the spring coil 521 is in contact with the positioning post 53; The lower end of the spring coil 521 is in contact with the connecting plate 51.

[0027] Positioning component 5 also includes: A slope 531 is formed at the top of the positioning post 53; The slope 531 corresponds to the position of the ball bearing 421.

[0028] Connection component 1 also includes: An internal channel 13 is provided inside the connecting frame 11; The support platform 131 is fixedly connected to the upper and lower outer sides of the built-in channel 13; The built-in channel 13 and support 131 facilitate the laying of cable material on 11, avoiding contact with 3 and thus preventing squeezing and wear.

[0029] The support platform 131 is fixedly connected to the connecting frame 11 on the side away from the built-in channel 13; When assembling the two sets of cable tray bodies 2, the two sets of cable tray bodies 2 can be respectively fitted onto the outer sides of the connecting frame 11. Then, the operator holds the handle 32 and drives the main shaft 31 and the worm gear 311 to rotate in the auxiliary compartment 12. At this time, under the meshing and rotation of the worm gear 311 and the worm wheel 331, the auxiliary shaft 33 located inside the worm wheel 331 can drive the arm 34 to rotate. When the scale mark 321 is vertically upward, the arm 34 is in a horizontally locked state in the connecting frame 11, and the connecting rods 341 on both sides of the arm 34 will drive the arc-shaped top block 35 to gradually push the inner sliding frame 41 inside the connecting frame 11. At this time, the inner sliding frame 41 is pushed forward in the connecting frame 11 by the pusher, and the ball 421 begins to push the slope 531 at the top of the positioning post 53. Subsequently, the positioning post 53 begins to slide from the inside to the outside in the connecting frame 11 until the positioning post 53 is inserted into the slot 21. The above steps complete the rapid assembly of the two sets of cable tray bodies 2 on the outside of the connecting component 1. The self-locking effect of the worm gear 311 and worm wheel 331 meshing adopted in this design can prevent loosening after assembly. Specifically, when the handle 32 is reversed, the arc-shaped top block 35 can be disengaged from the inner slide frame 41. At this time, the spring ring 521 elastically resets and pushes the inner slide frame 41 upward. When the ball 421 disengages at the slope 531, the positioning post 53 completes the upward reset and disengages from the slot 21. This design facilitates the disassembly of the connecting component 1 and the cable tray body 2 in the later stages.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A snap-fit ​​connection mechanism for a modular assembled cable tray, comprising a connection component (1), characterized in that: The connecting component (1) is equipped with cable tray bodies (2) on both sides, and slots (21) are provided at equal intervals on the inner side of the cable tray body (2). The connecting component (1) includes a connecting frame (11) and sub-compartments (12) symmetrically fixedly connected to both sides of the connecting frame (11). The screwing assembly (3) is installed at the connecting frame (11) and the sub-compartment (12); The twisting assembly (3) includes a lever (34) that is rotatable and can be locked by rotation. A propulsion assembly (4) is provided in the connecting frame (11) and can be pushed and slid by the arm (34). Positioning components (5) are equally spaced inside the connecting frame (11); The positioning component (5) includes a positioning post (53) that can be pushed by the pushing component (4) to complete the insertion positioning in the slot (21).

2. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 1, characterized in that, The twisting assembly (3) also includes: The main shaft (31) is rotatably connected inside the sub-compartment (12); The worm (311) is fixedly connected to the middle of the outer side of the main shaft (31).

3. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 2, characterized in that, The twisting assembly (3) also includes: A handle (32) is fixedly connected to the end of the main shaft (31); The scale mark (321) is located on the outside of the handle (32).

4. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 1, characterized in that, The twisting assembly (3) also includes: A secondary rotating shaft (33) is rotatably connected at the junction of the secondary compartment (12) and the connecting frame (11). A worm gear (331) is fixedly connected to the outside of the secondary shaft (33); The worm wheel (331) is in contact with the worm (311) and is meshed and rotatably connected; The end of the secondary rotating shaft (33) is fixedly connected to the arm (34).

5. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 4, characterized in that, The twisting assembly (3) also includes: Connecting rods (341) are symmetrically fixedly connected to both sides of the arm (34); An arc-shaped top block (35) is fixedly connected to the end of the connecting rod (341).

6. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 1, characterized in that, The propulsion component (4) includes: An inner sliding frame (41) is provided inside the connecting frame (11). The convex plates (42) are fixedly connected at equal intervals to the outside of the inner sliding frame (41); Rotary ball bearings (421) connected to the middle of the convex plate (42); The inner sliding frame (41) is slidably connected to the inner wall of the connecting frame (11) by ball bearings (421).

7. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 1, characterized in that, The positioning component (5) includes: A connecting plate (51) is fixedly connected to the slot through the periphery of the connecting frame (11); A limiting rod (52) is slidably connected to the middle part of the connecting plate (51); The limiting rod (52) and the positioning post (53) are fixedly connected.

8. The snap-fit ​​connection mechanism for a modular assembly cable tray according to claim 7, characterized in that, The positioning component (5) further includes: A spring ring (521) sleeved on the outside of the limiting rod (52); The upper end of the spring coil (521) is in contact with the positioning post (53); The lower end of the spring coil (521) is in contact with the connecting plate (51).

9. The snap-fit ​​connection mechanism for a modular assembled cable tray according to claim 1, characterized in that, The positioning component (5) further includes: A slope (531) is formed on the top of the positioning post (53); The slope (531) corresponds to the position of the ball (421).

10. The snap-fit ​​connection mechanism for a modular assembly cable tray according to claim 1, characterized in that, The connection component (1) further includes: An internal channel (13) is provided inside the connecting frame (11); The support platform (131) is fixedly connected to the upper and lower sides of the built-in channel (13). The support (131) is fixedly connected to the connecting frame (11) on the side away from the built-in channel (13).

Images