Electrical conduit pre-embedded structure based on building mechanical and electrical installation and use method of electrical conduit pre-embedded structure

Abstract

The invention discloses an electrical conduit pre-embedded structure based on building mechanical and electrical installation and a use method thereof.The electrical conduit pre-embedded structure comprises a left shell, a right shell, a clamping assembly, a direction guiding assembly and a sleeving assembly, and two to-be-spliced electrical conduits are arranged in the left shell and the right shell correspondingly; after the left shell and the right shell are fixed through the clamping assembly, the electrical conduits are located on the same level, the left shell and the right shell are driven by the direction guiding assembly to be close to each other, and splicing of the electrical conduits is completed; wherein the sleeving assembly is arranged on the right shell, and the sleeving assembly is used for sleeving a heat shrink tube at the joint port of the electrical conduit to be connected, so that the sealing performance of the conduit joint is very good, the risk that the pipe is blocked due to the fact that concrete mortar is poured into the JDG pipe is greatly reduced, many unnecessary grooving work in the later period is reduced, the main body structure is protected, and the service life of the JDG pipe is prolonged. Meanwhile, on-site flying dust and construction waste are reduced, and the energy-saving and environment-friendly benefits are obvious.

Description

Technical Field

[0001] The invention relates to an electrical conduit pre-buried structure based on building electromechanical installation and a use method thereof. Background Art

[0002] In the mechanical and electrical installation project of a building, the control of the pre-buried installation process of electrical conduits in the structure is an important step, which will directly affect whether the subsequent electrical cable insertion is smooth.

[0003] During the actual construction process, the cables cannot be laid due to the blockage of concrete slurry inside the conduit. In severe cases, the pre-buried conduit in this circuit may be directly scrapped, and it is necessary to re-lay the exposed pipe and re-groove the concrete structure for secondary piping, which wastes both materials and labor. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an electrical conduit pre-buried structure based on building electromechanical installation and a method of using the same. The movable plate is pushed by a first telescopic cylinder to sleeve the heat shrink tube in the fixed circle onto the joint port of the electrical conduit. With the cooperation of the rope pulling machine and the rope collecting machine, the left shell and the right shell are brought close to each other along the length direction of the guide cable, so that the two sections of the electrical conduit are in contact with each other, and the heat shrink tube is sleeved onto the joint of the two sections of the electrical conduit. A hot air gun is used to evenly heat the heat shrink tube so that the joint can be wrapped by the heat shrink tube. The process is not only beautiful but also practical, so that the airtightness of the conduit connection is very good, which greatly reduces the risk of concrete mortar being poured into the JDG pipe and causing the pipe to be blocked, reduces a lot of unnecessary grooving work in the later stage, protects the main structure, and at the same time reduces the generation of on-site dust and construction waste, with obvious energy-saving and environmental protection benefits.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an electrical conduit pre-buried structure based on building electromechanical installation, comprising a left shell, a right shell, a clamping assembly, a direction guide assembly and a sleeve assembly, two sections of electrical conduits to be spliced ​​are respectively installed in the left shell and the right shell, and after the left shell and the right shell are fixed by the clamping assembly, the electrical conduits are at the same level, and as the direction guide assembly drives the left shell and the right shell to approach each other, the splicing of the electrical conduits is completed; Wherein, the sleeve assembly is arranged on the right shell body, and the sleeve assembly is used to sleeve the heat shrink tube on the port of the electrical conduit connector to be connected.

[0006] As a preferred technical solution of the present invention, the sleeve assembly includes a fixed frame obliquely arranged on the right shell body, a slide groove is opened on the front side of the fixed frame, a movable plate is arranged in the slide groove, a fixed ring is arranged at one end of the movable plate facing the electrical conduit connector, and the heat shrink tube is installed in the fixed ring.

[0007] As a preferred technical solution of the present invention, a first telescopic cylinder is arranged on the back side of the fixed frame, and a power output end of the first telescopic cylinder is connected to the movable plate.

[0008] As a preferred technical solution of the present invention, the clamping assembly includes two connecting frames respectively arranged on the outside of the left shell and the right shell, a second telescopic cylinder is installed in the connecting frame, a movable block is hinged at the power output end of the second telescopic cylinder, and a first positioning plate is connected to the outside of the movable block.

[0009] As a preferred technical solution of the present invention, a connecting plate is hinged on the movable block, a rotating plate is hinged on one end of the connecting plate away from the movable block, and a second positioning plate is arranged on the rotating plate.

[0010] As a preferred technical solution of the present invention, the direction guiding assembly includes a first connecting frame and a second connecting frame respectively arranged on the left shell and the right shell, and the number of the first connecting frame and the second connecting frame on the left shell and the right shell is two.

[0011] As a preferred technical solution of the present invention, the two first connecting frames outside the left shell body are both provided with rope pulling machines, and the two second connecting frames outside the right shell body are both provided with rope collecting machines compatible with the rope pulling machines.

[0012] As a preferred technical solution of the present invention, a guide cable is provided between the rope pulling machine and the rope collecting machine.

[0013] As a preferred technical solution of the present invention, there are two clamping assemblies on the left shell and the right shell, and the two clamping assemblies are symmetrically arranged.

[0014] A method for using an electrical conduit pre-buried structure based on building electromechanical installation, the specific steps are as follows: S1. First, two sections of electrical conduits to be pre-buried are horizontally inserted into the cavities of the left shell and the right shell respectively, and the second telescopic cylinder is started. The power output end of the second telescopic cylinder drives the movable block to swing vertically downward, and the first positioning plate is pushed under the deflection cooperation of the connecting plate, so that the first positioning plate abuts against the outer lower wall of the left shell and the right shell; S2. When the movable block swings, the connecting plate follows the deflection and pushes upward vertically, abutting the rotating plate, so that the rotating plate rotates in the connecting frame, thereby pushing the second positioning plate to move toward the outer upper wall of the left shell and the right shell, and the outer walls thereof abut against each other. S2-1. After the clamping assembly clamps and fixes the left shell and the right shell respectively, the two sections of electrical conduits in the left shell and the right shell are at the same level; S3, check the inside and outside of the heat shrink tube, wipe the water stains on the inside and outside surfaces, then install the checked heat shrink tube in the fixed ring, start the first telescopic cylinder, the power output end of the first telescopic cylinder drives the moving plate to slide in the slide groove along the length direction of the slide groove, and the moving plate pushes the fixed ring to push the heat shrink tube in the fixed ring to the joint port of the electrical conduit; S4. After one end of the heat shrink ring is sleeved on the joint of the electrical conduit, the rope pulling machine is started, and the rope pulling machine pulls the guide cable. With the cooperation of the rope collecting machine, the right housing follows the guide of the guide cable and moves toward the left housing; S5. When the left shell and the right shell are close to each other, the joints of the two electrical conduits are in contact with each other, and the joint pipe is sleeved on the joints of the two electrical conduits to splice the two electrical conduits; S5-1. After the two sections of electrical conduits are spliced, the heat shrink sleeve located at the port of the left shell will be simultaneously sleeved on the end interfaces of the two sections of electrical conduits, and the heat shrink sleeve at the interface will be adjusted so that the lengths of the heat shrink sleeves sleeved on the two sections of electrical conduits are equal; S5-2. After tightening the screws at the joints of the two electrical conduits, use a hot air gun to evenly heat the heat shrink tube so that the joints can be wrapped by the heat shrink tube; S6. Finally, install the spliced ​​electrical conduit into the pre-opened groove in the concrete, and insert the electromechanical cables into the electrical conduit to complete the cable laying.

[0015] Compared with the prior art, the beneficial effects that the present invention can achieve are: the movable plate is pushed by the first telescopic cylinder, and the heat shrink tube in the fixed circle is sleeved on the joint port of the electrical conduit. With the cooperation of the rope pulling machine and the rope collecting machine, the left shell and the right shell are brought close to each other along the length direction of the guide cable, so that the two sections of the electrical conduit are in contact with each other, and the heat shrink tube is sleeved on the joint of the two sections of the electrical conduit. A hot air gun is used to evenly heat the heat shrink tube so that the joint can be wrapped by the heat shrink tube. The process is not only beautiful but also practical, which makes the airtightness of the conduit connection very good, greatly reducing the risk of concrete mortar being poured into the JDG pipe and causing the pipe to be blocked, reducing a lot of unnecessary grooving work in the later stage, protecting the main structure, and at the same time reducing the generation of dust and construction waste on site, with obvious energy-saving and environmental protection benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the fixed frame of the present invention; Figure 3 It is a structural schematic diagram of the connection plate of the present invention; Figure 4 It is a structural schematic diagram of the guide cable of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing ring of the present invention; Figure 6 It is a structural schematic diagram of the chute of the present invention; Figure 7 It is a schematic structural diagram of the first positioning plate of the present invention.

[0017] Among them: 1. left shell; 2. right shell; 3. heat shrink tube; 4. fixed frame; 5. slide groove; 6. movable plate; 7. fixed ring; 8. first telescopic cylinder; 9. connecting frame; 10. second telescopic cylinder; 11. movable block; 12. first positioning plate; 13. connecting plate; 14. rotating plate; 15. second positioning plate; 16. first connecting frame; 17. second connecting frame; 18. rope pulling machine; 19. rope collecting machine; 20. guide cable. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can be obtained from commercial channels.

[0019] Example: like Figure 1 - Figure 7 As shown, this embodiment proposes an electrical conduit pre-buried structure based on building electromechanical installation, including a left shell 1, a right shell 2, a clamping assembly, a direction guide assembly and a sleeve assembly. The two sections of electrical conduits to be spliced ​​are respectively installed in the left shell 1 and the right shell 2. After the left shell 1 and the right shell 2 are fixed by the clamping assembly, the electrical conduits are at the same level. As the direction guide assembly drives the left shell 1 and the right shell 2 to approach, the splicing of the electrical conduits is completed; wherein, the sleeve assembly is arranged on the right shell 2, and the sleeve assembly is used to sleeve the heat shrink tube 3 at the joint port of the electrical conduit to be connected; The movable plate 6 is pushed by the first telescopic cylinder 8 to sleeve the heat shrink tube 3 in the fixed ring 7 onto the joint port of the electrical conduit. With the cooperation of the rope pulling machine 18 and the rope collecting machine 19, the left shell 1 and the right shell 2 are brought close to each other along the length direction of the guide cable, so that the two sections of the electrical conduit are in contact with each other, and the heat shrink tube 3 is sleeved onto the joint of the two sections of the electrical conduit. A hot air gun is used to evenly heat the heat shrink tube 3 so that the joint can be wrapped by the heat shrink tube 3. The process is not only beautiful but also practical, which makes the airtightness of the conduit connection very good, greatly reducing the risk of concrete mortar being poured into the JDG pipe and causing the pipe to be blocked, reducing a lot of unnecessary grooving work in the later stage, protecting the main structure, and reducing the generation of dust and construction waste on site.

[0020] The sleeve assembly includes a fixed frame 4 obliquely arranged on the right shell 2, a slide groove 5 is provided on the front of the fixed frame 4, a movable plate 6 is arranged in the slide groove 5, a fixed ring 7 is arranged on one end of the movable plate 6 facing the electrical conduit connector, and a heat shrink tube 3 is installed in the fixed ring 7. As the power output end of the first telescopic cylinder 8 drives the movable plate 6 to slide in the slide groove 5 along the length direction of the slide groove 5, the fixed ring 7 is pushed to move toward the end of the electrical conduit, and the heat shrink tube 3 is sleeved on the end of the electrical conduit, the back side of the fixed frame 4 is provided with a first telescopic cylinder 8, the power output end of the first telescopic cylinder 8 is connected to the movable plate 6, the first telescopic cylinder 8 and the second telescopic cylinder 10 are both prior art, which will not be repeated here. The clamping assembly includes two connecting frames 9 respectively arranged on the outside of the left shell 1 and the right shell 2, a second telescopic cylinder 10 is installed in the connecting frame 9, a movable block 11 is hinged at the power output end of the second telescopic cylinder 10, and a first positioning plate 12 is connected to the outside of the movable block 11. The movable block 11 is hinged with a connecting plate 13, and the connecting plate 13 is hinged with a rotating plate 14 at one end away from the movable block 11. The rotating plate 14 is provided with a second positioning plate 15. The power output end of the second telescopic cylinder 10 drives the movable block 11 to swing, so that the first fixed plate abuts against the outer lower wall of the left shell body 1 and the right shell body 2. As the movable block 11 swings, the connecting plate 13 is driven to follow and pull the rotating plate 14 to rotate in the connecting frame 9, and the second fixed plate is pushed to move toward the outer upper wall of the left shell body 1 and the right shell body 2, and they abut against each other. The second telescopic cylinder 10 and the movable block 11, the movable block 11 and the connecting plate 13, and the connecting plate 13 and the rotating plate 14 are all hinged. After the left shell body 1 and the right shell body 2 are fixed by the first fixed plate and the second fixed plate, the two sections of the electrical conduits are at the same level, so that when the two are connected later, the joints of the two sections of the electrical conduits can be connected.

[0021] Furthermore, the direction guiding assembly includes a first connecting frame 16 and a second connecting frame 17 respectively arranged on the left shell body 1 and the right shell body 2, and the first connecting frame 16 and the second connecting frame 17 on the left shell body 1 and the right shell body 2 are both provided with two, and the two first connecting frames 16 on the outer side of the left shell body 1 are both provided with a rope pulling machine 18, and the two second connecting frames 17 on the outer side of the right shell body 2 are both provided with a rope collecting machine 19 adapted to the rope pulling machine 18, and a guide cable 20 is arranged between the rope pulling machine 18 and the rope collecting machine 19, and the clamping assemblies on the left shell body 1 and the right shell body 2 are both provided with two, and the two clamping assemblies are symmetrically arranged. As the rope pulling machine 18 pulls the guide cable 20, with the cooperation of the rope collecting machine 19, the right housing 2 follows the guide of the guide cable 20 and moves toward the left housing 1. After the left housing 1 and the right housing 2 are in contact, the two sections of the electrical conduit are also in contact, and the heat shrink sleeve is sleeved at the end interface of the two sections of the electrical conduit. After the two sections of the electrical conduit are sleeved by the pipe joint and the pipe fitting, the heat shrink tube 3 is evenly heated by a hot air blower. When processing the heat shrink tube 3, each section of the heat shrink tube is 4cm longer than the JDG tube, about 10cm, and it is noted that each length is the same. Finished heat shrink tube 3 can be used. In the actual construction process, due to the large number of on-site civil engineering installation personnel in the pre-embedded stage, it is necessary to pay attention to the protection of the finished product during the construction process. When laying the JDG tube, a heat shrink tube needs to be placed for each JDG tube joint that requires a joint and the connection between the tube and the box. When placing the heat shrink tube, pay attention to the fact that the inside and outside of the heat shrink tube cannot be wet, because wetness will cause the inner wall connection to be unreliable, seriously affecting the construction quality. If the outside of the heat shrink tube is wet, the construction time will be extended and the construction efficiency will be reduced. At the same time, pay attention to centering the heat shrink tube 3 when placing it, and ensure that the lengths of the heat shrink tube 3 at both ends are basically the same. The heat shrink tube 3 should be heated evenly when heated with a hot air gun, and the heat shrink tube 3 should be intact before heating. Compared with other sealing methods, this method is simple in process, can achieve obvious social and economic benefits, and has a high prospect for application and promotion.

[0022] A method for using an electrical conduit pre-buried structure based on building electromechanical installation, the specific steps are as follows: S1. First, the two sections of electrical conduits to be pre-buried are horizontally inserted into the cavities of the left shell 1 and the right shell 2 respectively, and the second telescopic cylinder 10 is started. The power output end of the second telescopic cylinder 10 drives the movable block 11 to swing vertically downward, and the first positioning plate 12 is pushed under the deflection cooperation of the connecting plate 13, so that the first positioning plate 12 abuts against the outer lower wall of the left shell 1 and the right shell 2; S2. When the movable block 11 swings, the connecting plate 13 follows the deflection and pushes vertically upward, abutting the rotating plate 14, so that the rotating plate 14 rotates in the connecting frame 9, thereby pushing the second positioning plate 15 to move toward the outer upper wall of the left shell 1 and the right shell 2, and the outer walls thereof abut against each other. S2-1, after the clamping assembly clamps and fixes the left shell 1 and the right shell 2 respectively, the two sections of electrical conduits in the left shell 1 and the right shell 2 are at the same level; S3, check the inside and outside of the heat shrink tube, wipe off the water stains on the inside and outside surfaces, then install the checked heat shrink tube 3 in the fixing ring 7, start the first telescopic cylinder 8, the power output end of the first telescopic cylinder 8 drives the moving plate 6 to slide in the slide groove 5 along the length direction of the slide groove 5, and the moving plate 6 pushes the fixing ring 7 to push the heat shrink tube 3 in the fixing ring 7 to the joint port of the electrical conduit; S4, when one end of the heat shrink ring 3 is sleeved on the joint of the electrical conduit, the rope pulling machine 18 is started, and the rope pulling machine pulls the guide cable 20, and with the cooperation of the rope collecting machine 19, the right housing 2 follows the guide of the guide cable 20 and moves toward the left housing 1; S5. When the left shell 1 and the right shell 2 are close to each other, the joints of the two electrical conduits are in contact with each other, and the joint pipe is sleeved on the joints of the two electrical conduits to splice the two electrical conduits; S5-1. After the two sections of electrical conduits are spliced, the heat shrink sleeve 3 located at the port of the left housing 1 is simultaneously sleeved on the end interfaces of the two sections of electrical conduits, and the heat shrink sleeve 3 at the interface is adjusted so that the lengths of the heat shrink sleeve 3 sleeved on the two sections of electrical conduits are equal; S5-2. After the two electrical conduit joints are fixed with set screws, the heat shrink tube 3 is evenly heated with a hot air gun so that the joints can be wrapped by the heat shrink tube 3. S6. Finally, install the spliced ​​electrical conduit into the pre-opened groove in the concrete, and insert the electromechanical cables into the electrical conduit to complete the cable laying.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above implementation regulations. The above implementation regulations and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electrical conduit pre-buried structure based on building electromechanical installation, characterized in that: It comprises a left shell (1), a right shell (2), a clamping assembly, a direction guiding assembly and a sleeve assembly. Two sections of electrical conduits to be spliced ​​are respectively installed in the left shell (1) and the right shell (2). After the left shell (1) and the right shell (2) are fixed by the clamping assembly, the electrical conduits are placed at the same level. As the direction guiding assembly drives the left shell (1) and the right shell (2) to approach each other, the splicing of the electrical conduits is completed. The sleeve assembly is arranged on the right shell (2), and is used to sleeve the heat shrink tube (3) onto the connector port of the electrical conduit to be connected.

2. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 1 is characterized in that: The sleeve assembly comprises a fixed frame (4) obliquely arranged on the right shell body (2), a slide groove (5) is provided on the front of the fixed frame (4), a movable plate (6) is arranged in the slide groove (5), a fixed ring (7) is arranged at one end of the movable plate (6) facing the electrical conduit connector, and the heat shrink tube (3) is installed in the fixed ring (7).

3. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 2 is characterized in that: A first telescopic cylinder (8) is arranged on the back side of the fixed frame (4), and a power output end of the first telescopic cylinder (8) is connected to the movable plate (6).

4. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 1 is characterized in that: The clamping assembly comprises two connecting frames (9) respectively arranged on the outside of the left shell (1) and the right shell (2), a second telescopic cylinder (10) is installed in the connecting frame (9), a movable block (11) is hingedly connected to the power output end of the second telescopic cylinder (10), and a first positioning plate (12) is connected to the outside of the movable block (11).

5. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 4 is characterized in that: A connecting plate (13) is hingedly connected to the movable block (11), a rotating plate (14) is hingedly connected to one end of the connecting plate (13) away from the movable block (11), and a second positioning plate (15) is arranged on the rotating plate (14).

6. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 1 is characterized in that: The direction guiding assembly comprises a first connecting frame (16) and a second connecting frame (17) respectively arranged on the left shell (1) and the right shell (2), and two of the first connecting frame (16) and the second connecting frame (17) are arranged on the left shell (1) and the right shell (2).

7. The electrical conduit pre-buried structure based on building mechanical and electrical installation according to claim 6 is characterized in that: The two first connecting frames (16) outside the left shell (1) are both provided with rope pulling machines (18), and the two second connecting frames (17) outside the right shell (2) are both provided with rope collecting machines (19) compatible with the rope pulling machines (18).

8. The electrical conduit pre-buried structure based on building mechanical and electrical installation according to claim 7 is characterized in that: A guide cable (20) is provided between the rope pulling machine (18) and the rope collecting machine (19).

9. The electrical conduit pre-buried structure based on building electromechanical installation according to claim 1 is characterized by: There are two clamping assemblies on each of the left shell (1) and the right shell (2), and the two clamping assemblies are symmetrically arranged.

10. A method for using a pre-buried electrical conduit structure based on building electromechanical installation according to any one of claims 1 to 9, characterized in that: S1. First, two sections of electrical conduits to be pre-buried are horizontally inserted into the cavities of the left shell (1) and the right shell (2), respectively, and the second telescopic cylinder (10) is started. The power output end of the second telescopic cylinder (10) drives the movable block (11) to swing vertically downward, and the first positioning plate (12) is pushed under the deflection cooperation of the connecting plate (13), so that the first positioning plate (12) abuts against the outer lower walls of the left shell (1) and the right shell (2); S2. When the movable block (11) swings, the connecting plate (13) follows the deflection and pushes vertically upward to abut against the rotating plate (14), so that the rotating plate (14) rotates in the connecting frame (9), thereby pushing the second positioning plate (15) toward the outer upper wall of the left shell (1) and the right shell (2), and the outer walls thereof abut against each other. S2-1. After the clamping assembly clamps and fixes the left housing (1) and the right housing (2) respectively, the two sections of the electrical conduits in the left housing (1) and the right housing (2) are at the same level; S3, check the inside and outside of the heat shrink tube, and wipe off the water stains on the inside and outside surfaces, then install the checked heat shrink tube (3) in the fixed ring (7), start the first telescopic cylinder (8), the power output end of the first telescopic cylinder (8) drives the movable plate (6) to slide in the slide groove (5) along the length direction of the slide groove (5), and the movable plate (6) pushes the fixed ring (7) to push the heat shrink tube (3) in the fixed ring (7) to the joint port of the electrical conduit; S4. After one end of the heat shrink ring (3) is sleeved on the joint of the electrical conduit, the rope pulling machine (18) is started, and the rope pulling machine pulls the guide cable (20). With the cooperation of the rope collecting machine (19), the right housing (2) follows the guide of the guide cable (20) and moves toward the left housing (1); S5. When the left shell (1) and the right shell (2) are brought into contact with each other, the joints of the two electrical conduits are brought into contact with each other, and a joint pipe is sleeved on the joints of the two electrical conduits to splice the two electrical conduits; S5-1. After the two sections of electrical conduits are spliced, the heat shrink sleeve (3) located at the port of the left shell (1) is simultaneously sleeved on the end interfaces of the two sections of electrical conduits, and the heat shrink sleeve (3) at the interface is adjusted so that the lengths of the heat shrink sleeve (3) sleeved on the two sections of electrical conduits are equal; S5-2. After the two sections of the electrical conduit joint are fixed with the set screws, the heat shrink tube (3) is evenly heated with a hot air gun so that the joint can be wrapped by the heat shrink tube (3); S6. Finally, install the spliced ​​electrical conduit into the pre-opened groove in the concrete, and insert the electromechanical cables into the electrical conduit to complete the cable laying.

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