Multi-layer protection device for municipal heating pipeline construction

Abstract

The utility model relates to heat pipeline construction protection technical field discloses multilayer protection device for municipal heat pipeline construction, including heat pipeline, the outer wall top of heat pipeline is fixedly connected with support frame, the inner wall middle part of support frame is fixedly connected with hydraulic push rod, the output fixedly connected with support plate of hydraulic push rod, the rack rotation is connected in the bottom left and right side of support plate, two telescopic frame two rotation is connected in the inner wall adjacent side of adjusting column, the outer wall bottom of heat pipeline rotatably connects with fixed mechanism, the fixed mechanism is used for fixedly connected construction pipeline. In the utility model, heat pipeline top support frame provides basic support, hydraulic push rod telescopes in, rack synchronous movement when support plate moves, changes the inclination angle of adjusting column, realizes horizontal direction adjustment, and the protection effect and construction convenience of municipal heat pipeline are improved.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for construction of heating pipelines, and in particular to a multi-layer protection device for the construction of municipal heating pipelines. Background Technology

[0002] Multi-layer protection devices for municipal heating pipeline construction are specially designed to provide multiple layers of protection for heating pipelines and their surrounding environment during the construction process, ensuring the safe operation of the heating pipelines and the quality of construction. Pipeline laying relies on coverings and simple supports, which, while preventing mechanical damage, are insufficient to meet the long-term stable operation requirements of the urban underground environment. They also lack effective regulation mechanisms, and traditional methods are not suitable for different construction conditions, leading to difficulties in pipeline installation and maintenance, and seriously affecting construction efficiency and quality.

[0003] A search revealed Chinese Patent Publication No. CN109630756A, which discloses a multi-layer protective device for municipal heating pipeline construction, comprising a heating pipe, corner frames, and wedges. Four sets of locking blocks are clamped at each of the four corners of the heating pipe; the locking blocks are slidably connected to the inner side of the corner frames; a set of adjusting screws is axially connected to the center of the corner frames; a set of adjusting blocks is threaded to the lower part of the adjusting screws; the adjusting blocks are slidably connected to the corner frames; the bottom of the adjusting blocks is elastically connected to the locking blocks via a set of springs; a set of frame blocks is fixedly connected between adjacent sets of corner frames via screws; adjacent sets of protective... The devices are connected by wedges. By setting an adjusting screw, the adjusting block slides within the corner frame to adjust the preload of the spring, thereby adjusting the preload on the pipeline. The preload can be adjusted according to actual needs. During use, the position of the pipeline can be finely adjusted by the preload of the four corner frames to facilitate installation. However, in existing multi-layer protection devices for municipal heating pipeline construction, the installation of multi-layer protection devices is limited in narrow construction spaces and complex terrain conditions. In underground work areas with numerous pipelines, the installation of multi-layer protection devices requires the relocation of existing pipelines and the adoption of special construction methods, increasing the construction difficulty. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-layer protective device for the construction of municipal heating pipelines, aiming to improve the problem that the installation of multi-layer protective devices is restricted and construction difficulty is increased in narrow construction spaces and complex terrain conditions in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-layer protective device for municipal heating pipeline construction, comprising a heating pipeline, a support frame fixedly connected to the top of the outer wall of the heating pipeline, a hydraulic push rod fixedly connected to the middle of the inner wall of the support frame, a support plate fixedly connected to the output end of the hydraulic push rod, adjusting plates rotatably connected to the left and right sides of the bottom of the support frame, adjusting columns rotatably connected to the outer walls of the adjusting plates on opposite sides, racks slidably connected to the middle of the inner walls of the two adjusting columns, the racks rotatably connected to the left and right sides of the bottom of the support plate, telescopic frames one rotatably connected to the left and right sides of the inner wall of the support frame, telescopic frames two rotatably connected to the other ends of the two telescopic frames one, the two telescopic frames two rotatably connected to adjacent sides of the inner walls of the adjusting columns, and a fixing mechanism rotatably connected to the bottom of the outer wall of the heating pipeline, the fixing mechanism being used to fix and connect the construction pipeline.

[0006] The above technical solution involves: a top support frame for the thermal pipeline providing basic support; a hydraulic push rod for vertical adjustment; a support plate that can move up and down to adapt to different height requirements; an adjustment plate rotatably connected to an adjustment column; a rack slidably connected to the adjustment column; and a rack that moves synchronously when the support plate moves, changing the tilt angle of the adjustment column to achieve horizontal adjustment. Telescopic frames one and two are rotatably connected; when the adjustment column rotates, the telescopic structure extends or retracts, flexibly adjusting the horizontal coverage of the protective device. A fixing mechanism is rotatably connected to the bottom of the thermal pipeline for connecting the construction pipeline.

[0007] As a further description of the above technical solution: The fixing mechanism includes a fixing belt, which is rotatably connected to the bottom left side of the heat pipe. Pawls are fixedly connected at equal intervals to the right side of the outer wall of the fixing belt. A fixing frame is fixedly connected to the bottom right side of the heat pipe. The fixing belt is slidably connected to the middle of the inner wall of the fixing frame. A ratchet is rotatably connected to the top of the outer wall of the fixing frame. An adjusting block is fixedly connected to one side of the inner wall of the ratchet. A fixing block is fixedly connected to the bottom of the outer wall of the adjusting block. The fixing block engages with the fixing frame.

[0008] The above technical solution involves installing a fixing strap on the bottom left side of the heat pipe, passing through the middle of the fixing frame. Its pawl cooperates with the limiting structure of the fixing frame to prevent the pipe from shifting to the left and to initially fix it. The ratchet on the fixing frame is used to fine-tune the tightness of the fixing strap. When rotating, the adjusting block and the fixing block work together.

[0009] As a further description of the above technical solution: A gasket is fixedly connected to the rear side of the outer wall of the support frame, and springs are fixedly connected to the top left and right sides of the gasket.

[0010] The above technical solution involves fixing the rear outer wall of the support frame to it with gaskets to extend its service life. Springs are installed on both sides of the gaskets to provide elasticity and ensure structural stability and safety.

[0011] As a further description of the above technical solution: The outer wall of the fixed frame has multiple connection holes around its perimeter, and a throttle is fixedly connected to the top of the outer wall of the ratchet.

[0012] The above technical solution applies pressure to the fixing belt to enhance the clamping force on the pipe, adapting to different pipe diameters and construction environments. The outer wall of the fixing frame is provided with multiple connection holes to provide compatibility with component connections. The top is connected to a ratchet with a throttle handle for easy operation by the operator.

[0013] As a further description of the above technical solution: A fixing column is fixedly connected to the middle of the outer wall of the two adjusting columns, and a connecting block is fixedly connected to the adjacent side of the outer wall of the adjusting columns.

[0014] The above technical solution involves a fixed column fixedly connected to the middle of the outer wall of the adjusting column to provide stability and support. A connecting block is also fixedly connected to the adjacent side of the adjusting column to enhance the structural strength and facilitate connection with the telescopic frame.

[0015] As a further description of the above technical solution: The inner wall of the support frame has a rotating shaft running through it on both the left and right sides, and a fixing ring is fixedly connected to the rear end of the outer wall of the rotating shaft.

[0016] The above technical solution involves a pivot on the left and right sides of the inner wall of the support frame and a fixing ring at the rear end of the outer wall, which is used to connect with external structures or equipment to fix the position of the support frame or to work in conjunction with other devices.

[0017] As a further description of the above technical solution: The bottom front and rear sides of the adjustment plate are fixedly connected to baffles, and the inner wall of each baffle has a rotating shaft passing through it.

[0018] The above technical solution ensures that the connecting parts rotate flexibly and are easy to adjust the direction. The baffle at the bottom of the adjusting plate can change its angle through the rotating shaft, adapting to the rotation of the adjusting plate and limiting its rotation range, thus protecting the equipment.

[0019] As a further description of the above technical solution: A wear-resistant pad is fixedly connected to the top of the outer wall of the hydraulic push rod, and a handle is fixedly connected to the rear side of the outer wall of the hydraulic push rod.

[0020] The above technical solution reduces wear and extends service life with the wear-resistant pad on the top of the hydraulic push rod, and the handle on the rear side facilitates operation and improves construction convenience.

[0021] This utility model has the following beneficial effects: 1. In this utility model, the top support frame of the heating pipeline provides basic support. The hydraulic push rod extends and retracts internally, allowing the support plate to move up and down to adapt to different height protection requirements. The adjusting plate is rotatably connected to the adjusting column, and the rack is slidably connected to the adjusting column. When the support plate moves, the rack moves synchronously, changing the tilt angle of the adjusting column to achieve horizontal adjustment. The telescopic frame is rotatably connected, and the telescopic structure extends and retracts when the adjusting column rotates, flexibly adjusting the horizontal coverage of the protective device. This device can flexibly adjust the preload, facilitating installation and fine-tuning, thus improving the protection effect and construction convenience of municipal heating pipelines.

[0022] 2. In this utility model, the fixing strap is installed on the bottom left side of the heating pipe, can rotate and pass through the middle of the fixing frame. The pawl of the fixing strap cooperates with the one-way limiting structure of the fixing frame to initially fix the pipe. The ratchet on the fixing frame can adjust the tightness of the fixing strap. When the ratchet is rotated, the adjusting block and the fixing block work together to apply pressure to the fixing strap, enhance the clamping force on the pipe, so as to adapt to different pipe diameters and construction environments. Attached Figure Description

[0023] Figure 1 This is a perspective view of the multi-layer protective device for municipal heating pipeline construction proposed in this utility model; Figure 2 This is a front view of the multi-layer protective device for municipal heating pipeline construction proposed in this utility model; Figure 3 This is a rear view of the multi-layer protective device for municipal heating pipeline construction proposed in this utility model. Figure 4 This is a partial structural exploded view of the multi-layer protective device for municipal heating pipeline construction proposed in this utility model; Figure 5 This is a split view of the fixing mechanism of the multi-layer protective device for municipal heating pipeline construction proposed in this utility model.

[0024] Legend: 1. Heating pipe; 2. Fixing mechanism; 201. Fixing belt; 202. Pawl; 203. Fixing frame; 204. Ratchet; 205. Adjusting block; 206. Fixing block; 3. Support frame; 4. Hydraulic push rod; 5. Support plate; 6. Adjusting plate; 7. Adjusting column; 8. Rack; 9. Telescopic frame one; 10. Telescopic frame two; 11. Gasket; 12. Spring; 13. Connecting hole; 14. Turning handle; 15. Fixing column; 16. Connecting block; 17. Rotating shaft; 18. Fixing ring; 19. Baffle; 20. Rotating shaft; 21. Wear-resistant pad; 22. Handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides a multi-layer protective device for the construction of municipal heating pipelines, including a heating pipeline 1. A support frame 3 is fixedly connected to the top of the outer wall of the heating pipeline 1. A hydraulic push rod 4 is fixedly connected to the middle of the inner wall of the support frame 3. A support plate 5 is fixedly connected to the output end of the hydraulic push rod 4. Adjusting plates 6 are rotatably connected to the left and right sides of the bottom of the support frame 3. Adjusting columns 7 are rotatably connected to the outer walls of the adjusting plates 6 on opposite sides. A rack 8 is slidably connected to the middle of the inner walls of the two adjusting columns 7. The rack 8 is rotatably connected to the left and right sides of the bottom of the support plate 5. Telescopic frames 9 are rotatably connected to the left and right sides of the inner walls of the support frame 3. Telescopic frames 10 are rotatably connected to the other ends of the two telescopic frames 9. The two telescopic frames 10 are rotatably connected to adjacent sides of the inner walls of the adjusting columns 7. A fixing mechanism 2 is rotatably connected to the bottom of the outer wall of the heating pipeline 1. The fixing mechanism 2 is used to connect the construction pipeline. A gasket 11 is fixedly connected to the rear side of the outer wall of the support frame 3. Springs 12 are fixedly connected to the top left and right sides of the gasket 11. Specifically, the top support frame 3 of the heating pipe 1 provides basic support. The hydraulic push rod 4, located inside the support frame 3, is key to vertical adjustment. The extension and retraction of the hydraulic push rod 4 causes the support plate 5 to move up and down, adapting to different height protection requirements. The adjusting plate 6 is rotatably connected to the adjusting column 7, and the rack 8 is slidably connected to the adjusting column 7. When the support plate 5 moves, the rack 8 moves synchronously, changing the tilt angle of the adjusting column 7 to achieve horizontal adjustment. The telescopic frame 1 9 and telescopic frame 2 10 are rotatably connected. When the adjusting column 7 rotates, the telescopic structure extends or retracts, flexibly adjusting the horizontal coverage of the protective device. The bottom of the heating pipe 1 is rotatably connected to the fixing mechanism 2. The main function of this fixing mechanism 2 is to firmly connect the construction pipes. The rear side of the outer wall of the support frame 3 is fixedly connected to the gasket 11 to ensure the service life of the structure. Springs 12 are fixedly connected to the top left and right sides of the gasket 11. These springs 12 can provide a certain elasticity to ensure the stability and safety of the entire structure.

[0027] Reference Figure 1 , Figure 2 and Figure 5The fixing mechanism 2 includes a fixing belt 201, which is rotatably connected to the bottom left side of the heat pipe 1. Pawls 202 are fixedly connected at equal intervals to the right side of the outer wall of the fixing belt 201. A fixing frame 203 is fixedly connected to the bottom right side of the heat pipe 1. The fixing belt 201 is slidably connected to the middle of the inner wall of the fixing frame 203. A ratchet 204 is rotatably connected to the top of the outer wall of the fixing frame 203. An adjusting block 205 is fixedly connected to one side of the inner wall of the ratchet 204. A fixing block 206 is fixedly connected to the bottom of the outer wall of the adjusting block 205. The fixing block 206 engages with the fixing frame 203. Multiple connecting holes 13 are opened around the outer wall of the fixing frame 203. A handle 14 is fixedly connected to the top of the outer wall of the ratchet 204. A fixing post 15 is fixedly connected to the middle of the outer wall of the two adjusting posts 7. A connecting block 16 is fixedly connected to the adjacent side of the outer wall of the adjusting post 7. Specifically, the fixing strap 201 is installed on the bottom left side of the heating pipe 1, and can rotate and pass through the middle of the fixing frame 203. The pawl 202 of the fixing strap 201 cooperates with the one-way limiting structure of the fixing frame 203 to prevent it from retracting to the left, thus initially fixing the pipe. The ratchet 204 on the fixing frame 203 can finely adjust the tightness of the fixing strap 201. When the ratchet 204 is rotated, the adjusting block 205 and the fixing block 206 work together to apply pressure to the fixing strap 201, increasing the clamping force on the pipe to adapt to different pipe diameters and construction environments. Around the outer wall of the fixing frame 203... Multiple connection holes 13 are provided to allow the mounting bracket 203 to be compatible with the components. A handle 14 is connected to the top of the ratchet 204 to facilitate easy operation by the operator. Corresponding mounting posts 15 are also fixedly connected to the middle of the outer wall of the two adjusting posts 7. These mounting posts 15 provide additional stability and support for the adjusting posts 7. Practical connecting blocks 16 are also fixedly connected to the adjacent side of the outer wall of the adjusting posts 7. These connecting blocks 16 not only enhance the structural strength of the adjusting posts 7, but also facilitate the connection with the telescopic frame.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A rotating shaft 17 is passed through the middle of the inner wall of the support frame 3 on both the left and right sides. A fixing ring 18 is fixedly connected to the rear end of the outer wall of the rotating shaft 17. A baffle 19 is fixedly connected to the bottom front and rear sides of the adjustment plate 6. A rotating shaft 20 is passed through the middle of the inner wall of the baffle 19. A wear-resistant pad 21 is fixedly connected to the top of the outer wall of the hydraulic push rod 4. A handle 22 is fixedly connected to the rear side of the outer wall of the hydraulic push rod 4. Specifically, the rotating shaft 17 penetrating the left and right sides of the inner wall of the support frame 3, and the fixing ring 18 fixedly connected to its rear end, can be connected to external structures or equipment through the fixing ring 18 to further fix the position of the support frame 3 or to work in coordination with other devices. The rotating shaft 17 ensures the rotational flexibility of the connection part, making it easy to adjust the direction under different working conditions. The baffle 19 fixed to the front and rear sides of the bottom of the adjusting plate 6, with the rotating shaft 20 penetrating the middle of its inner wall, allows the baffle 19 to change angle around the rotating shaft 20 during the rotation of the adjusting plate 6. This design... The design allows the adjusting plate 6 to flexibly adapt to changes in position as the adjusting column 7 is rotated according to the action of the rack 8. The baffle 19 provides some limitation and protection for the rotation range of the adjusting plate 6. The wear-resistant pad 21 fixed to the top of the outer wall of the hydraulic push rod 4 reduces frictional wear with other components and extends the service life of the hydraulic push rod 4 during the up-and-down movement of the support plate 5 driven by the hydraulic push rod 4. The handle 22 fixed to the rear side of the outer wall facilitates manual operation of the hydraulic push rod 4 by construction personnel, such as starting, stopping, or fine-tuning its extension and retraction, improving the convenience of construction operations. Working Principle: The support frame 3 fixed to the top of the outer wall of the heat pipe 1 provides the basic support for the entire protective device. The hydraulic push rod 4 inside the support frame 3 is the main component for vertical adjustment. When the hydraulic push rod 4 is activated, its output end extends and retracts, driving the support plate 5 fixedly connected to it to move up and down. During construction, when it is necessary to adjust the protective device to protect the heat pipe 1 at different heights and to adapt to the differences in ground height at different construction sites, the height of the support plate 5 can be changed by the hydraulic push rod 4. The adjusting plate 6, which is rotatably connected to the left and right sides of the bottom of the support frame 3, is rotatably connected to the adjusting column 7. The rack 8, which is slidably connected inside the adjusting column 7, is also rotatably connected to the left and right sides of the bottom of the support plate 5. When the support plate 5 moves up and down under the action of the hydraulic push rod 4, it will drive the rack 8 to move synchronously. Due to the interaction between the rack 8 and the gear inside the adjusting column 7, the movement of the rack 8 will cause the adjusting column 7 to rotate around the rotatable connection point with the adjusting plate 6, thereby changing the tilt angle of the adjusting column 7 and achieving horizontal adjustment. The adjustment of the device allows for flexible adjustment of the horizontal coverage of the protective device based on the laying direction of the heating pipeline 1 and the surrounding environment of the construction site. The telescopic frame 9, which is rotatably connected to the left and right sides of the inner wall of the support frame 3, is rotatably connected to the telescopic frame 10. The telescopic frame 10 is rotatably connected to the inner wall of the adjacent side of the adjusting column 7. When the adjusting column 7 rotates due to the drive of the rack 8, it will pull the telescopic frame 10, thereby causing the telescopic structure composed of the telescopic frame 9 and the telescopic frame 10 to extend or retract. This telescopic structure can wrap and protect the heating pipeline 1 at different construction stages with different pipe diameters during the construction of the heating pipeline 1. During the pipeline laying process, the degree of extension and retraction of the telescopic frame can be adjusted according to the placement spacing of the pipeline to ensure comprehensive protection, provide a reliable heating pipeline protection solution, enhance pipeline stability during construction, reduce the risk of damage, introduce an adjustable pre-tightening mechanism, refine the management of pipeline pressure, ensure construction quality, improve efficiency, facilitate maintenance and upgrades, and extend the service life and service cycle of the equipment. The fixing strap 201 is rotatably connected to the bottom left side of the heating pipe 1. It can rotate around the connection point, with its right side portion passing around the bottom of the heating pipe 1 and penetrating the middle of the inner wall of the fixing frame 203. Because pawls 202 are equidistantly fixed to the right side of the outer wall of the fixing strap 201, when the fixing strap 201 is pulled to the right through the fixing frame 203, the pawls 202 cooperate with the one-way limiting structure inside the fixing frame 203 to prevent the fixing strap 201 from retracting to the left. This achieves initial circumferential fixing of the heating pipe 1, preventing the pipe from easily moving horizontally. A ratchet 204, rotatably connected to the top of the outer wall of the fixing frame 203, works in conjunction with the fixing strap 201. When fine-tuning of the tightness of the fixing strap 201 is required, the ratchet 204 is rotated. The adjusting block 205, which is fixedly connected to one side of the inner wall, rotates synchronously with the ratchet 204. The fixing block 206, which is fixedly connected to the bottom of the outer wall of the adjusting block 205, engages with the fixing frame 203. During the rotation of the ratchet 204, the adjusting block 205 drives the fixing block 206 to make a slight adjustment within the engagement position of the fixing frame 203, thereby driving the ratchet 204 to apply different degrees of pressure to the fixing band 201. For example, when the ratchet 204 is rotated clockwise, the adjusting block 205 pushes the fixing block 206, making the ratchet 204 squeeze the fixing band 201 more tightly, enhancing the clamping force of the fixing band 201 on the heat pipe 1, and achieving the effect of precise adjustment of the fixing force to adapt to the requirements of the fixing stability of heat pipes 1 with different diameters and under different construction environments.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer protective device for municipal heating pipeline construction, comprising a heating pipeline (1), characterized in that: A support frame (3) is fixedly connected to the top of the outer wall of the heat pipe (1). A hydraulic push rod (4) is fixedly connected to the middle of the inner wall of the support frame (3). A support plate (5) is fixedly connected to the output end of the hydraulic push rod (4). An adjustment plate (6) is rotatably connected to the left and right sides of the bottom of the support frame (3). An adjustment column (7) is rotatably connected to the outer wall of the adjustment plate (6) on the side away from each other. A rack (8) is slidably connected to the middle of the inner wall of the two adjustment columns (7). The rack (8) is rotatably connected to the left and right sides of the bottom of the support plate (5). A telescopic frame one (9) is rotatably connected to the left and right sides of the inner wall of the support frame (3). A telescopic frame two (10) is rotatably connected to the other end of the two telescopic frames one (9). The two telescopic frames two (10) are rotatably connected to the adjacent side of the inner wall of the adjustment column (7). A fixing mechanism (2) is rotatably connected to the bottom of the outer wall of the heat pipe (1). The fixing mechanism (2) is used to fix the construction pipe.

2. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: The fixing mechanism (2) includes a fixing belt (201), which is rotatably connected to the bottom left side of the heat pipe (1). Pawls (202) are fixedly connected at equal intervals on the right side of the outer wall of the fixing belt (201). A fixing frame (203) is fixedly connected to the bottom right side of the heat pipe (1). The fixing belt (201) is slidably connected to the middle of the inner wall of the fixing frame (203). A ratchet (204) is rotatably connected to the top of the outer wall of the fixing frame (203). An adjusting block (205) is fixedly connected to one side of the inner wall of the ratchet (204). A fixing block (206) is fixedly connected to the bottom of the outer wall of the adjusting block (205). The fixing block (206) engages with the fixing frame (203).

3. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: A pad (11) is fixedly connected to the rear side of the outer wall of the support frame (3), and springs (12) are fixedly connected to the top left and right sides of the pad (11).

4. The multi-layer protective device for municipal heating pipeline construction according to claim 2, characterized in that: The outer wall of the fixed frame (203) is provided with multiple connection holes (13), and the top of the outer wall of the ratchet (204) is fixedly connected with a throttle (14).

5. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: A fixing column (15) is fixedly connected to the middle of the outer wall of the two adjusting columns (7), and a connecting block (16) is fixedly connected to the adjacent side of the outer wall of the adjusting column (7).

6. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: The inner wall of the support frame (3) has a rotating shaft (17) running through it on both the left and right sides. The outer rear end of the rotating shaft (17) is fixedly connected to a fixing ring (18).

7. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: The bottom front and rear sides of the adjustment plate (6) are fixedly connected with baffles (19), and the inner wall of the baffles (19) is penetrated by a rotating shaft (20).

8. The multi-layer protective device for municipal heating pipeline construction according to claim 1, characterized in that: A wear-resistant pad (21) is fixedly connected to the top of the outer wall of the hydraulic push rod (4), and a handle (22) is fixedly connected to the rear side of the outer wall of the hydraulic push rod (4).

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