Hanging laminated bridge cover plate locking tool
By designing a locking tool for suspended multilayer cable tray covers, and utilizing a handheld laying device and hose clamps for unilateral construction inside the cable tray, the problem of locking suspended cable tray covers was solved, achieving safe and efficient construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CHEM ENG SECOND CONSTR
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-17
AI Technical Summary
In petrochemical plant projects, the cable trays are multi-layered and suspended without walkways, making it difficult to lock the cover plates, and existing locking tools cannot be used effectively.
Design a locking tool for suspended multilayer cable tray cover plates, including a hand-held laying device and a hose clamp. The length is adjusted by an expansion joint and a snap ring. The hand-held laying device is used to carry out unilateral construction on the inside of the cable tray and lock the hose clamp steel strip.
This technology enables unilateral locking of the suspended cable tray cover, reducing the risks of working at heights, saving on scaffolding erection and dismantling costs, shortening the construction period, and reducing costs.
Smart Images

Figure CN224129669U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable tray installation technology, specifically, it is a locking tool for suspended stacked cable tray cover plates. Background Technology
[0002] In petrochemical plant projects, cable trays come in various specifications, quantities, and layers, and are usually arranged on the cable tray layer of the integrated pipe gallery or on the top layer of the pipe gallery, all of which are located at high altitudes.
[0003] The inner side of the multi-layer cable tray is a walkway platform, while the outer side is suspended without a walkway. The structure of the trough-type cable tray is that the inner edge is folded and the outer side is flat. It is impossible for manual arms to reach the outer side to tie and lock the cover plate. It is not suitable to use the currently commonly used double ladder V-lock, seven-shaped lock, and side full lock for locking. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a locking tool for suspended multilayer cable tray covers, which can at least achieve the purpose of unilateral construction on the inner walkway platform of the cable tray.
[0005] To solve the above technical problems, the technical solution adopted by this utility model is as follows:
[0006] A suspended multilayer cable tray cover locking tool includes a hand-held laying device and a hose clamp; the hand-held laying device has a laying frame with a top opening, the laying frame includes a base plate and two short side plates fixed to the base plate, and the steel band of the hose clamp is detachably connected to the inside of the laying frame.
[0007] Furthermore, the base plate includes two base plate end plates, and an expansion joint for adjusting the overall length of the base plate is provided between the two base plate end plates. The two ends of the expansion joint are slidably fitted onto the outside of the base plate end plates, and one or more snap ring tongues are provided between the expansion joint and the base plate end plates.
[0008] Furthermore, one or two side plates are provided with telescopic joints for adjusting the overall length of the side plates. One end of the telescopic joint is slidably fitted onto the outer end of the side plate, and one or more snap rings are provided between the telescopic joint and the outer end of the side plate.
[0009] Furthermore, the length of one side plate is greater than the length of the other side plate.
[0010] Furthermore, a handle is attached to the outer end of one of the longer side panels.
[0011] Using the suspended multilayer cable tray cover locking tool provided by this utility model, workers lay the hose clamps to the outside of the cable trays from the walkway inside the two rows of cable trays using a handheld laying device. Then, the steel strip of the hose clamp is inserted into the preset gap of the hose clamp head and the hose clamp is locked to complete the cover locking construction.
[0012] Using the aforementioned suspended multilayer cable tray cover plate locking tool, single-sided construction can be carried out. The cable tray cover plates can be easily tied and locked manually, solving the problems of not being able to carry out construction on both sides when locking large-sized suspended multilayer cable tray cover plates, and the narrow space between layers preventing the arm from extending to the other side of the cable tray. This saves on scaffolding investment, reduces the risk of accidents during high-altitude operations, achieves the goal of high efficiency and safety, shortens the construction period, and saves costs. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the handheld application device described in this utility model;
[0014] Figure 2 This is a schematic diagram of the structure for laying hose clamps on the outside of the cable tray;
[0015] Figure 3 This is a schematic diagram showing the completed installation of hose clamps on the suspended multilayer cable tray cover.
[0016] In the diagram, 1-laying frame, 2-base plate, 3-side plate, 4-hose clamp, 5-expansion joint, 6-spring clip, 7-handle, 8-cable tray, 9-cover plate. Detailed Implementation
[0017] In cases where one side is suspended, existing technologies make it difficult to install the cover plate 9 due to the suspension on the side adjacent to the wall when multiple layers of cable trays are laid close together or when extra-large cable trays are laid against the wall.
[0018] Based on this, a typical embodiment of the present invention provides a locking tool for suspended multilayer cable tray covers, including a handheld laying device and a hose clamp. The handheld laying device has a laying frame 1 with an open top, the laying frame 1 including a base plate 2 and two short side plates 3 fixed to the base plate 2, and the steel strap of the hose clamp is detachably connected to the inside of the laying frame.
[0019] Based on the specifications and dimensions of the trough-type cable tray 8, prepare to purchase stainless steel hose clamps of the corresponding size. Temporarily fix the steel strip of the hose clamp 4, which is suitable for the cable tray specifications and dimensions, to the inside of the laying frame 1. Wrap the laying frame 1 with the hose clamp 4 around the outside of the cable tray 8 from the bottom of the cable upwards. Then, insert the steel strip of the hose clamp 4 into the preset gap of the hose clamp head and lock the hose clamp to complete the locking construction of the cover plate 9.
[0020] The above method can be used to easily lock the cable tray cover plate 9 that is suspended on one side, ensuring construction quality and eliminating the risk of the cover plate 9 falling off.
[0021] In a preferred embodiment, such as Figure 1As shown, the base plate 2 includes two base plate end plates, and an expansion joint 5 for adjusting the overall length of the base plate is provided between the two base plate end plates. The two ends of the expansion joint 5 are slidably fitted onto the outside of the base plate end plates, and one or more snap ring tongues 6 are provided between the expansion joint 5 and the base plate end plates.
[0022] The expansion joint 5 on the base plate 2 can be used to adjust the overall length of the base plate 2 to accommodate different widths of the cable tray 8. The overall length of the base plate 2 is slightly smaller than the width of the cable tray 8.
[0023] In another preferred embodiment, one or two side plates 3 are provided with telescopic joints 5 for adjusting the overall length of the side plates 3. One end of the telescopic joint 5 is slidably fitted onto the outer end of the side plate 3, and one or more snap ring tongues 6 are provided between the telescopic joint 5 and the outer end of the side plate 3.
[0024] The expansion joint 5 on the side plate 3 can be used to adjust the overall length of the side plate 3 to accommodate different heights of the cable tray 8.
[0025] The aforementioned telescopic joint 5 is a sleeve-type structure. A retaining spring tongue 6 is provided on the telescopic joint 5. The retaining spring tongue 6 penetrates the telescopic joint 5 and inserts into the positioning holes spaced apart on the bottom end plate or side plate 3, or it penetrates the telescopic joint 5 and presses against the surface of the bottom end plate or side plate 3. When the length needs to be adjusted, the locking function of the telescopic joint is released by pressing the retaining spring tongue 6.
[0026] Furthermore, one of the side plates 3 is longer than the other side plate 3. The length of the longer side plate 3 is preferably twice the height of the cable tray, and a handle 7 is connected to the outer end of the side plate 3.
[0027] The technical solution claimed by this utility model will be further clearly and completely described below through relatively specific embodiments.
[0028] The cable tray 8 involved in this embodiment has a specification of 600×200mm and requires locking of multi-layer cable tray covers. Based on the specifications and dimensions of the cable trays on site, prepare stainless steel hose clamps suitable for the cable tray dimensions, and check that the hose clamps 4 have a normal locking structure, are stable, and not loose, for future use. A handheld laying device of the corresponding size is made using Φ6 steel pipe. The dimensions of the base plate 2 and side plate 3 are adjusted using the expansion joint 5 and the snap ring tongue 6 to accommodate the locking of cable tray covers of different specifications.
[0029] Bend the steel strip of hose clamp 4 according to the specifications and dimensions of cable tray 8, using a stainless steel hose clamp that is suitable for the cable tray specifications and dimensions.
[0030] Adjust the expansion joints of the laying frame accordingly to match the specifications and dimensions of the cable tray. By pressing the spring clip 6, release the locking function of the expansion joint, allowing the expansion joint 5 to shrink to the required size.
[0031] Then, the stainless steel hose clamps, folded to the appropriate size, are fixed to the laying frame using adhesive tape.
[0032] The worker, holding a handle, stands on the inner walkway platform of the multi-layer cable tray. They pass the locking tool for the suspended multi-layer cable tray cover plate over cable tray 8, and then pass it under the cable tray 8 through the opening of the laying frame. The steel strip for the laying frame and hose clamps is then wrapped around the outside of the cable tray 8. Next, one end of the steel strip is pulled inwards and inserted into the hose clamp head, and the bolt is tightened for initial locking. Figure 2 The dotted lines indicate the inward fold of the steel strip. Simultaneously, the cable tray frame is separated from the stainless steel hose clamp. The stainless steel hose clamp is then tightened using an electric screwdriver to complete the tightening process. This process is repeated for all cable tray cover plates.
[0033] The above embodiments solve the problems of narrow gaps between large-sized, multi-layer cable tray cover plates, which prevent construction workers from working in the stacked space, and the construction difficulties of having no standing point on one side and being unable to wrap stainless steel hose clamps to lock the cover plate 9. It saves on the erection and dismantling of scaffolding platforms, easily solving the cable tray cover plate locking construction by manual operation alone. Compared with conventional construction methods that require erecting scaffolding operating platforms, it saves manpower, materials, machinery, and time, eliminates the safety risks associated with working at heights, and accelerates the construction progress.
Claims
1. A locking tool for suspended multilayer cable tray covers, characterized in that, The device includes a handheld applicator and a hose clamp; the handheld applicator has an applicator frame with an open top, the applicator frame including a base plate and two short side plates fixed to the base plate, and the steel strap of the hose clamp is detachably connected to the inside of the applicator frame.
2. The overhead laminated bridge cover locking tool of claim 1, wherein, The base plate includes two base plate end plates, and an expansion joint for adjusting the overall length of the base plate is provided between the two base plate end plates. The two ends of the expansion joint are slidably fitted onto the outside of the base plate end plates, and one or more snap ring tongues are provided between the expansion joint and the base plate end plates.
3. The overhead laminated bridge cover locking tool of claim 2, wherein, One or two side plates are provided with telescopic joints for adjusting the overall length of the side plates. One end of the telescopic joint is slidably fitted onto the outer end of the side plate, and one or more snap rings are provided between the telescopic joint and the outer end of the side plate.
4. The overhead laminated bridge cover locking tool of claim 1, 2 or 3, wherein, One of the side panels is longer than the other side panel.
5. The overhead laminated bridge cover locking tool of claim 4, wherein, A handle is attached to the outer end of the longer side panel.