A combined cover plate assembly for pipeline trench construction protection

Abstract

The present invention relates to the technical field of pipeline trench construction protection, specifically a combined cover plate assembly for pipeline trench construction protection, including a slide rail structure. Both the left and right ends of the slide rail structure are connected with side plate structures. A combined structure is arranged inside the slide rail structure. The slide rail structure is slidably connected with a first steel plate, a second steel plate and a third steel plate. The bottoms of the first steel plate, the second steel plate and the third steel plate are all fixedly connected with slider structures. Hook structures are arranged at the positions close to the ends of the first steel plate, the second steel plate and the third steel plate. The first steel plate, the second steel plate and the third steel plate are all provided with clamping structures. The first steel plate, the second steel plate and the third steel plate can slide on the first slide rail, the second slide rail and the third slide rail. Compared with the traditional temporary cover plate method, the covering area is large, the operation is simple, the situation of warping of the steel plate due to deformation can be avoided, and at the same time, there is no need to hoist the steel plate back and forth to cover the trench, and the construction operation environment is safe.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline trench construction protection, and specifically relates to a combined cover plate assembly for pipeline trench construction protection. Background Art

[0002] At present, for pipeline trenches with long construction periods and heavy traffic pressure, the construction mainly adopts the method of temporary steel plates; the pipeline trenches are protected by steel plates to achieve waterproofing and vehicle passage. The following problems exist in the construction process:

[0003] 1. The temporary steel plates have great potential safety hazards: During use, the steel plates are repeatedly rolled by passing vehicles, causing the steel plates to be stressed unevenly for a long time, which easily leads to plastic deformation of the steel plates, causing the steel plates to warp and affecting the normal driving of vehicles, with potential safety hazards.

[0004] 2. The temporary steel plates are difficult to move: In order to ensure that the pipeline trench construction does not affect the normal use of the road, the temporary steel plates are often large in size and need to be hoisted and installed, with low efficiency and affecting the construction progress. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a combined cover plate assembly for pipeline trench construction protection.

[0006] The technical solution adopted by the present invention to solve its technical problems is: A combined cover plate assembly for pipeline trench construction protection, including a slide rail structure, both left and right ends of the slide rail structure are connected with side plate structures, a combined structure is arranged inside the slide rail structure, the slide rail structure is slidably connected with a first steel plate, a second steel plate and a third steel plate, the bottom ends of the first steel plate, the second steel plate and the third steel plate are fixedly connected with slider structures, hook structures are arranged at the positions near the ends of the first steel plate, the second steel plate and the third steel plate, and clamping structures are arranged on the first steel plate, the second steel plate and the third steel plate;

[0007] The slide rail structure includes two fixing plates, and the two fixing plates are jointly fixedly connected with a first slide rail, a second slide rail and a third slide rail. The first steel plate is slidably connected with the first slide rail, the second steel plate is slidably connected with the second slide rail, and the third steel plate is slidably connected with the third slide rail.

[0008] Specifically, the right end of the second slide rail is located below the first slide rail, the right end of the third slide rail is located below the second slide rail, the left ends of the first slide rail, the second slide rail and the third slide rail are at the same height, there is a distance between the left ends of the first slide rail and the second slide rail, and there is a distance between the left ends of the second slide rail and the third slide rail.

[0009] Specifically, the side plate structure includes bolt holes and side plates. Bolt holes are provided at both the left and right ends of the fixing plate, and bolts are rotatably connected to the side plates. The bolts are threadedly connected to the bolt holes.

[0010] Specifically, the combination structure includes a first card slot, a first card block, a rotating block, and a fixing slot. A first card slot and a fixing slot are respectively provided at both ends of the left fixing plate. A first card block is fixedly connected to one end of the right fixing plate, and a rotating block is rotatably connected to one end. The first card block is inserted into the first card slot, and the rotating block is inserted into the fixing slot.

[0011] Specifically, the slider structure includes sliders. A plurality of sliders are fixedly connected to the bottoms of the first steel plate, the second steel plate, and the third steel plate. Mud shovels are fixedly connected to both ends of the sliders at the ends of the first steel plate, the second steel plate, and the third steel plate. A plurality of pulleys are rotatably connected to the sliders. The pulleys at the bottoms of the first steel plate, the second steel plate, and the third steel plate are respectively in rolling connection with a first slide rail, a second slide rail, and a third slide rail. The tops of the cross-sections of the first slide rail, the second slide rail, and the third slide rail are triangular, and the groove angles of the pulleys are the same as the top angles of the first slide rail, the second slide rail, and the third slide rail.

[0012] Specifically, the hook structure includes a notch. Notches are provided at positions close to the ends of the first steel plate, the second steel plate, and the third steel plate. Hanging rings are fixedly connected to the bottoms of the first steel plate, the second steel plate, and the third steel plate close to the notches. Iron chains are connected to the hanging rings. Fixed blocks are fixedly connected to the iron chains. Two magnets are fixedly connected inside the notches of the first steel plate, the second steel plate, and the third steel plate. The fixed blocks are magnetically attracted by the magnets, and a handle is fixedly connected to the fixed blocks.

[0013] Specifically, the clamping structure includes a second card block and a second card slot. Second card slots are provided at the right ends of the second steel plate and the third steel plate. Second card blocks are fixedly connected to the left ends of the second steel plate and the first steel plate. The second card blocks are clamped with the second card slots.

[0014] Specifically, the first slide rail, the second slide rail, the third slide rail, and the fixing plate are made of steel with anti-deformation ability.

[0015] The beneficial effects of the present invention are:

[0016] (1) A combined cover plate assembly for pipeline trench construction protection according to the present invention. The first steel plate, the second steel plate and the third steel plate can slide on the first slide rail, the second slide rail and the third slide rail. Compared with the traditional temporary cover plate method, it has a large covering area, simple operation, does not require hoisting the steel plate back and forth to cover the trench, and the construction operation environment is safe. That is, when it is necessary to open the pipeline trench for construction, remove the bolt at the left end of the fixing plate, remove the side plate at the left end from the fixing plate, pull the handle at the left end of the third steel plate, slide the third steel plate to the left for a certain distance, and then pull the third steel plate upward to slide the third steel plate into the bottom right end of the third slide rail. Then pull the handle at the left end of the second steel plate, slide the second steel plate to the left for a certain distance, and then pull the second steel plate upward to slide the second steel plate into the bottom right end of the second slide rail. The construction opening left after the second steel plate and the third steel plate slide is convenient for workers to enter the trench for construction.

[0017] (2) A combined cover plate assembly for pipeline trench construction protection according to the present invention. The second steel plate and the third steel plate can slide on the second slide rail and the third slide rail. When a heavy rain comes, waterproof operation can be carried out faster, and no manual ballast is required. The operation time is greatly shortened compared with the traditional manual laying, and the time for the foundation pit slope to be affected by rainwater is reduced. That is, when it is necessary to temporarily seal the trench, remove the bolt at the left end of the fixing plate, remove the side plate at the left end from the fixing plate, pull out the handle at the left end of the second steel plate, pull the handle upward to drive the second steel plate to slide upward, then pull the handle to the left to drive the second steel plate to slide to the left for a certain distance, and then slide the second steel plate to the right to drive the second slot to engage with the second block to connect the first steel plate and the second steel plate. Then pull out the handle at the left end of the third steel plate, pull the handle upward to drive the third steel plate to slide upward, then pull the handle to the left to drive the third steel plate to slide to the left for a certain distance, and then slide the third steel plate to the right to drive the second slot to engage with the second block to connect the three steel plates. Then use bolts to connect the side plate to the left end of the combined fixing plate to complete the sealing of the trench.

[0018] (3) The combined cover plate assembly for pipeline trench construction protection according to the present invention, the first steel plate, the second steel plate and the third steel plate are slidably connected to the first slide rail, the second slide rail and the third slide rail. When a vehicle passes on the steel plate, the deformation of the steel cover plate is reduced to avoid the situation of warping, the occurrence of accidents is reduced, and the safe passage of the vehicle is guaranteed, that is: when installing the bottom slide rail, after the pipeline trench to be constructed is excavated, level the soil around the trench so that the height of the soil around the trench is slightly lower than the road for normal driving vehicles, so that the height of the installed steel plate is the same as the height of the road for normal driving vehicles, which is convenient for the normal passage of vehicles. After leveling the soil around the trench, move the fixing plate and insert the first block into the first slot, and then rotate the rotating block and insert it into the fixing slot, thereby initially fixing the two fixing plates. At the right end of the two combined fixing plates, use bolts to connect the side plate and the fixing plate to build the sliding track of the preliminary steel plate. First, install the first steel plate on the first slide rail, and then slide the first steel plate to the end of the first slide rail. Install the second steel plate on the second slide rail, and then slide the second steel plate to the upper end of the second slide rail. At this time, the second steel plate drives the second slot to engage with the second block, stably connecting the first steel plate and the second steel plate. Then install the third steel plate on the third slide rail, slide the third steel plate to the upper end of the third slide rail, drive the second slot to engage with the second block, so that the three steel plates are stably connected. After the installation of the three steel plates is completed, use bolts to connect the side plate and the left end of the combined fixing plate to complete the sealing of the trench. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the slide rail structure of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the combined structure of the present invention;

[0023] Figure 4 Schematic diagram of the connection structure between the slide rail structure and the side plate structure of the present invention;

[0024] Figure 5 Schematic diagram of the connection structure between the first steel plate and the second steel plate of the present invention;

[0025] Figure 6 For Figure 2 The enlarged schematic diagram of the structure of part A shown;

[0026] Figure 7 Schematic diagram of the connection structure between the third steel plate and the hook structure of the present invention;

[0027] Figure 8 Schematic diagram of the connection structure of the rotating block and the fixing groove of the present invention;

[0028] Figure 9 Schematic diagram of the connection structure of the slider structure and the slide rail structure of the present invention;

[0029] Figure 10 is Figure 7 Enlarged schematic diagram of the structure of part B shown;

[0030] In the figure: 1. Slide rail structure; 101. Fixed plate; 102. First slide rail; 103. Second slide rail; 104. Third slide rail; 2. Side plate structure; 201. Side plate; 202. Bolt; 203. Bolt hole; 3. Combined structure; 301. First card slot; 302. First card block; 303. Rotating block; 304. Fixing groove; 4. First steel plate; 5. Second steel plate; 6. Third steel plate; 7. Slider structure; 701. Slider; 702. Pulley; 703. Mud spatula; 8. Hook structure; 801. Notch; 802. Magnet; 803. Hanging ring; 804. Iron chain; 805. Fixed block; 806. Handle; 9. Engaging structure; 901. Second card block; 902. Second card slot. Specific embodiments

[0031] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0032] As Figures 1-10 shown, a combined cover assembly for pipeline trench construction protection according to the present invention includes a slide rail structure 1, and side plate structures 2 are threadedly connected to both left and right ends of the slide rail structure 1 for closing and protecting the slide rail structure 1. A combined structure 3 is provided inside the slide rail structure 1 for disassembling and combining the slide rail structure 1. The slide rail structure 1 is slidably connected with a first steel plate 4, a second steel plate 5 and a third steel plate 6. Slider structures 7 are fixedly connected to the bottoms of the first steel plate 4, the second steel plate 5 and the third steel plate 6 for driving the first steel plate 4, the second steel plate 5 and the third steel plate 6 to slide on the slide rail structure 1. Hook structures 8 are provided at the near ends of the first steel plate 4, the second steel plate 5 and the third steel plate 6 for facilitating the pulling and handling of the first steel plate 4, the second steel plate 5 and the third steel plate 6. Engaging structures 9 are provided on the first steel plate 4, the second steel plate 5 and the third steel plate 6. When it is necessary to seal the pipeline trench, the engaging structure 9 and the side plate structure 2 cooperate with each other to tightly connect the first steel plate 4, the second steel plate 5 and the third steel plate 6.

[0033] Specifically, the slide rail structure 1 includes two fixing plates 101. The two fixing plates 101 are jointly and fixedly connected with a first slide rail 102, a second slide rail 103 and a third slide rail 104. The first steel plate 4 is slidably connected with the first slide rail 102, the second steel plate 5 is slidably connected with the second slide rail 103, and the third steel plate 6 is slidably connected with the third slide rail 104. The manufacturing material of the slide rail structure 1 has high stiffness, high strength, and sufficient anti-deformation ability.

[0034] Specifically, the right end of the second slide rail 103 is located below the first slide rail 102, the right end of the third slide rail 104 is located below the second slide rail 103, the left ends of the first slide rail 102, the second slide rail 103 and the third slide rail 104 are at the same height, there is a distance between the left ends of the first slide rail 102 and the second slide rail 103, and there is a distance between the left ends of the second slide rail 103 and the third slide rail 104, which is used to slide down the first steel plate 4, the second steel plate 5 and the third steel plate 6.

[0035] Specifically, the side plate structure 2 includes bolt holes 203 and side plates 201. Bolt holes 203 are formed at both the left and right ends of the fixing plate 101. Bolts 202 are rotatably connected to the side plates 201, and the bolts 202 are threadedly connected to the bolt holes 203 to connect the side plates 201 and the fixing plates 101.

[0036] Specifically, the combined structure 3 includes a first card slot 301, a first card block 302, a rotating block 303 and a fixing slot 304. A first card slot 301 and a fixing slot 304 are respectively formed at both ends of one fixing plate 101. A first card block 302 is fixedly connected to one end of one fixing plate 101, and a rotating block 303 is rotatably connected to one end. The first card block 302 is inserted into the first card slot 301, and the rotating block 303 is inserted into the fixing slot 304. During construction, after the pipeline trench to be constructed is dug, move the fixing plate 101 to insert the first card block 302 into the first card slot 301, and then rotate the rotating block 303 to insert it into the fixing slot 304. After initially fixing the two fixing plates 101, use bolts 202 to connect the side plates 201 and the fixing plates 101 to build the sliding track of the steel plate.

[0037] Specifically, the slider structure 7 includes a slider 701. A plurality of sliders 701 are fixedly connected to the bottoms of the first steel plate 4, the second steel plate 5, and the third steel plate 6. At both ends of the sliders 701 at the ends of the first steel plate 4, the second steel plate 5, and the third steel plate 6, a mud scraper 703 is fixedly connected to remove the accumulated mud and dirt on the slide rail. A plurality of pulleys 702 are rotatably connected to the slider 701, and the slide rail structure 1 is slidably connected to the pulley 702. The tops of the first slide rail 102, the second slide rail 103, and the third slide rail 104 are triangular in shape to prevent the accumulated mud and dirt dropped during construction from accumulating on the chute.

[0038] The concave angle of the pulley 702 is the same as the top angle of the first slide rail 102, the second slide rail 103, and the third slide rail 104, increasing the contact area between the pulley 702 and the first slide rail 102, the second slide rail 103, and the third slide rail 104, facilitating the better sliding of the pulley 702 on the slide rail. During use, the first steel plate 4, the second steel plate 5, and the third steel plate 6 are slid to drive the mud scraper 703 to remove the accumulated mud and dirt on the first slide rail 102, the second slide rail 103, and the third slide rail 104, ensuring the normal sliding of the first steel plate 4, the second steel plate 5, and the third steel plate 6.

[0039] Specifically, the hook structure 8 includes a notch 801. The first steel plate 4, the second steel plate 5, and the third steel plate 6 are each provided with a notch 801 near the end position. A hanging ring 803 is fixedly connected to the bottom of the first steel plate 4, the second steel plate 5, and the third steel plate 6 near the notch 801. The hanging ring 803 is connected to an iron chain 804, and the iron chain 804 is fixedly connected to a fixing block 805. Two magnets 802 are fixedly connected inside the notch 801 of the first steel plate 4, the second steel plate 5, and the third steel plate 6. The magnet 802 magnetically attracts the fixing block 805, and the fixing block 805 is fixedly connected to a handle 806. When it is necessary to slide the steel plate, the handle 806 is pulled outwards to drive the fixing block 805 to pull out the iron chain 804 outwards, and the handle 806 can be pulled out of the steel plate, increasing the force application range and facilitating the operation of the construction workers. After the movement is completed, the handle 806 is placed back into the notch 801. At this time, the magnet 802 automatically magnetically attracts the fixing block 805 to prevent the handle 806 from moving and affecting the vehicles traveling on the steel plate.

[0040] Specifically, the clamping structure 9 includes a second clamping block 901 and a second clamping groove 902. The right ends of the second steel plate 5 and the third steel plate 6 are both provided with the second clamping groove 902. The left ends of the second steel plate 5 and the first steel plate 4 are both fixedly connected with the second clamping block 901. The second clamping block 901 is clamped and connected with the second clamping groove 902. When it is necessary to seal the pipeline trench, first slide the first steel plate 4 to the end of the first slide rail 102, and then slide the second steel plate 5 to the upper end of the second slide rail 103. At this time, the second steel plate 5 drives the second clamping groove 902 to be clamped with the second clamping block 901. Then slide the third steel plate 6 to the upper end of the third slide rail 104, driving the second clamping groove 902 to be clamped with the second clamping block 901, making the connection between the three steel plates more stable.

[0041] When the present invention is in use, when installing the bottom slide rail, after the pipeline trench to be constructed is excavated, level the soil around the trench so that the height of the soil around the trench is slightly lower than the road surface of a normally traveling vehicle, making the height of the installed steel plate the same as the road surface of a normally traveling vehicle, which is convenient for vehicles to pass normally. After leveling the soil around the trench, move the fixed plate 101 and insert the first clamping block 302 into the first clamping groove 301, and then rotate the rotating block 303 and insert it into the fixing groove 304, thereby initially fixing the two fixed plates 101. At the right ends of the two combined fixed plates 101, use bolts 202 to connect the side plate 201 with the fixed plate 101 to build the sliding track of the preliminary steel plate; first install the first steel plate 4 on the first slide rail 102, and then slide the first steel plate 4 to the end of the first slide rail 102. Install the second steel plate 5 on the second slide rail 103, and then slide the second steel plate 5 to the upper end of the second slide rail 103. At this time, the second steel plate 5 drives the second clamping groove 902 to be clamped with the second clamping block 901, stably connecting the first steel plate 4 and the second steel plate 5. Then install the third steel plate 6 on the third slide rail 104, and slide the third steel plate 6 to the upper end of the third slide rail 104, driving the second clamping groove 902 to be clamped with the second clamping block 901, making the three steel plates stably connected. After the installation of the three steel plates is completed, use bolts 202 to connect the side plate 201 with the left end of the combined fixed plate 101 to complete the installation of the three steel plates, and then use bolts 202 to connect the side plate 201 with the left end of the combined fixed plate 101 to complete the sealing of the trench.

[0042] When it is necessary to start construction on the pipe trench, remove the bolt 202 at the left end of the fixed plate 101, remove the side plate 201 at the left end from the fixed plate 101, pull the handle 806 at the left end of the third steel plate 6, slide the third steel plate 6 to the left for a certain distance, then pull the third steel plate 6 upward, slide the third steel plate 6 into the bottom right end of the third slide rail 104, then pull the handle 806 at the left end of the second steel plate 5, slide the second steel plate 5 to the left for a certain distance, then pull the second steel plate 5 upward, slide the second steel plate 5 into the bottom right end of the second slide rail 103. The construction opening left after the sliding of the second steel plate 5 and the third steel plate 6 facilitates workers to enter the trench for construction.

[0043] When it is necessary to temporarily seal the trench, remove the bolt 202 at the left end of the fixed plate 101, remove the side plate 201 at the left end from the fixed plate 101, pull out the handle 806 at the left end of the second steel plate 5, pull the handle 806 upward to drive the second steel plate 5 to slide upward, then pull the handle 806 to the left to drive the second steel plate 5 to slide to the left for a certain distance, then slide the second steel plate 5 to the right to drive the second slot 902 to engage with the second block 901, connecting the first steel plate 4 and the second steel plate 5. Then pull out the handle 806 at the left end of the third steel plate 6, pull the handle 806 upward to drive the third steel plate 6 to slide upward, then pull the handle 806 to the left to drive the third steel plate 6 to slide to the left for a certain distance, then slide the third steel plate 6 to the right to drive the second slot 902 to engage with the second block 901, connecting the three steel plates. Then use the bolt 202 to connect the side plate 201 and the left end of the combined fixed plate 101 to complete the sealing of the trench.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined cover plate assembly for pipeline trench construction protection, including a slide rail structure (1), characterized in that, Both left and right ends of the sliding rail structure (1) are connected with side plate structures (2). A combined structure (3) is provided inside the sliding rail structure (1). The sliding rail structure (1) is slidably connected with a first steel plate (4), a second steel plate (5) and a third steel plate (6). Slider structures (7) are fixedly connected to the bottoms of the first steel plate (4), the second steel plate (5) and the third steel plate (6). Hook structures (8) are provided at positions close to the ends of the first steel plate (4), the second steel plate (5) and the third steel plate (6). Latching structures (9) are provided on the first steel plate (4), the second steel plate (5) and the third steel plate (6). The sliding rail structure (1) includes two fixing plates (101). A first sliding rail (102), a second sliding rail (103) and a third sliding rail (104) are fixedly connected by the two fixing plates (101). The first steel plate (4) is slidably connected with the first sliding rail (102). The second steel plate (5) is slidably connected with the second sliding rail (103). The third steel plate (6) is slidably connected with the third sliding rail (104). The right end of the second sliding rail (103) is located below the first sliding rail (102). The right end of the third sliding rail (104) is located below the second sliding rail (103). The left ends of the first sliding rail (102), the second sliding rail (103) and the third sliding rail (104) are at the same height. There is a certain distance between the left ends of the first sliding rail (102) and the second sliding rail (103). There is a certain distance between the left ends of the second sliding rail (103) and the third sliding rail (104). The slider structure (7) includes sliders (701). A plurality of sliders (701) are fixedly connected to the bottoms of the first steel plate (4), the second steel plate (5) and the third steel plate (6). Mud shovels (703) are fixedly connected to both ends of the sliders (701) at the ends of the first steel plate (4), the second steel plate (5) and the third steel plate (6). A plurality of pulleys (702) are rotatably connected to the sliders (701). The pulleys (702) at the bottoms of the first steel plate (4), the second steel plate (5) and the third steel plate (6) are respectively in rolling connection with the first sliding rail (102), the second sliding rail (103) and the third sliding rail (104).

2. The combined cover plate assembly for pipeline trench construction protection according to claim 1, characterized in that: The side plate structure (2) includes bolt holes (203) and side plates (201). Bolt holes (203) are formed at both left and right ends of the fixing plate (101). Bolts (202) are rotatably connected to the side plates (201). The bolts (202) are in threaded connection with the bolt holes (203).

3. The combined cover plate assembly for pipeline trench construction protection according to claim 2, characterized in that: The combined structure (3) includes a first card slot (301), a first card block (302), a rotating block (303), and a fixing slot (304). At both ends of one of the fixing plates (101) on the left, a first card slot (301) and a fixing slot (304) are respectively formed. At one end of one of the fixing plates (101) on the right, a first card block (302) is fixedly connected, and a rotating block (303) is rotatably connected. The first card block (302) is inserted into the first card slot (301), and the rotating block (303) is inserted into the fixing slot (304).

4. The combined cover plate assembly for pipeline trench construction protection according to claim 1, characterized in that: The tops of the cross-sections of the first slide rail (102), the second slide rail (103), and the third slide rail (104) are triangular, and the groove angle of the pulley (702) is the same as the top angle of the first slide rail (102), the second slide rail (103), and the third slide rail (104).

5. The combined cover plate assembly for pipeline trench construction protection according to claim 1, wherein: The hook structure (8) includes a notch (801). The first steel plate (4), the second steel plate (5), and the third steel plate (6) are all provided with notches (801) at positions close to the ends. At the bottom of the first steel plate (4), the second steel plate (5), and the third steel plate (6) close to the notch (801), a hanging ring (803) is fixedly connected. The hanging ring (803) is connected to an iron chain (804), and the iron chain (804) is fixedly connected to a fixing block (805).

6. The combined cover plate assembly for pipeline trench construction protection according to claim 5, wherein: Two magnets (802) are fixedly connected inside the notch (801) of the first steel plate (4), the second steel plate (5), and the third steel plate (6). The fixing block (805) is magnetically attracted by the magnets (802), and the fixing block (805) is fixedly connected to a handle (806).

7. A combined cover plate assembly for pipeline trench construction protection according to claim 1, characterized in that: The clamping structure (9) includes a second card block (901) and a second card slot (902). Second card slots (902) are formed at the right ends of the second steel plate (5) and the third steel plate (6). Second card blocks (901) are fixedly connected to the left ends of the second steel plate (5) and the first steel plate (4). The second card block (901) is clamped with the second card slot (902).

8. The modular cover assembly for pipeline trench construction protection according to claim 1, characterized in that: The first slide rail (102), the second slide rail (103), the third slide rail (104), and the fixing plate (101) are made of steel with anti-deformation ability.

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