A tunnel shock-absorbing layer buffer energy absorber and manufacturing method thereof

Abstract

The present invention belongs to the technical field of tunnel construction, and specifically is a tunnel shock-absorbing layer buffer energy absorber and a manufacturing method thereof; a PE pipe, a plug and a foam filling block are arranged; the foam concrete is sealed inside by the PE pipe and the plug, so that tunnel fissure water can be prevented from entering and damaging the foam concrete; the space between the foam concrete and the PE pipe end is filled by the foam filling block, so that the probability of the foam concrete shaking inside the PE pipe is reduced, and the compactness of the foam concrete after solidification is improved; a frame structure made of steel bars is used on the initial support surface of the tunnel as a load-bearing structure, and the manufactured buffer energy absorber can be directly installed, which is convenient for workers to construct and install.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, in particular to a tunnel shock-absorbing layer buffer energy absorber and a manufacturing method thereof. Background Art

[0002] Crustal fault movement is one of the main causes of tunnel earthquake damage, which causes uneven settlement of the tunnel foundation. The stress and deformation of the tunnel lining under the action of active fault dislocation causes the steel bars to enter the plastic yield stage and the concrete to fail brittlely. In mild cases, the lining concrete will crack and peel off, and in severe cases, the secondary lining will collapse, which is a serious earthquake damage type. Existing tunnels mainly install rubber, foam concrete and other materials between the surrounding rock and the secondary lining structure to isolate the tunnel surrounding rock from the secondary lining structure. During an earthquake, the earthquake energy is consumed through the deformation of the shock-absorbing material.

[0003] A Chinese patent with publication number CN102562091A discloses a tunnel foam concrete shock-absorbing structure and its construction method. The tunnel foam concrete shock-absorbing structure is provided with a buffer layer between the inner and outer layers of the tunnel arch and the side wall. The inner layer is the initial support layer, including a steel arch frame and a steel mesh; the outer layer is a secondary lining layer; the buffer layer is a foam concrete layer, and connecting steel bars are welded on the outer steel mesh of the initial support layer; the connecting steel bars are evenly distributed along the tunnel arch and the side wall in the circumferential direction, and the length of the connecting steel bars of the connecting steel bars is set to extend into the foam concrete layer. The low elastic shock-absorbing property of foam concrete is utilized to absorb and disperse the impact load generated by the earthquake. The surrounding rock in the tunnel combined with the initial support layer can play a stress-bearing role to the maximum extent, and the secondary lining layer plays a role of safety reserve and aesthetics. At the same time, the lining trolley is used for shifting construction, and the foam concrete layer is poured in conjunction with the trolley template. There is no replacement and coordination between equipment during the construction project, which saves time.

[0004] Due to the porous nature of foam concrete, it absorbs a large amount of external moisture and has a relatively high water absorption rate. Once the external humidity becomes low, the water content in the pores will decrease, causing the pores to lose their flexibility. The foam concrete layer directly cast between the tunnel surrounding rock and the secondary lining structure will expand and contract with changes in humidity, causing cracks in the foam concrete layer and reducing the shock-absorbing and buffering effect of the foam concrete layer.

[0005] To this end, the present invention provides a tunnel shock-absorbing layer buffer energy absorber and a manufacturing method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the tunnel shock-absorbing layer buffer energy absorber described in the present invention comprises a PE tube, a plug and a foam filling block, the two ends of the PE tube are respectively fixed with plugs, the interior of the PE tube is filled with foam concrete, and a foam filling block is arranged inside one end of the PE tube; the foam concrete is sealed inside by the PE tube and the plug, which can prevent tunnel fissure water from entering and damaging the foam concrete; the space between the foam concrete and the PE tube end is filled by the foam filling block, which reduces the probability of the foam concrete shaking inside the PE tube and improves The compactness of the foam concrete after solidification; in the initial support surface of the tunnel, steel bars are used to make a frame structure as the load-bearing structure, and the prepared buffer energy absorber can be directly installed, which is convenient for the workers to construct and install; the construction period is short, and the foam concrete shock-absorbing layer of the whole-ring tunnel is installed on-site with the buffer energy absorber, so one mold can be filled in 2-3 days; if the cast-in-place foam concrete construction process is adopted on-site, the foam concrete is layered, and the next layer is poured after the final setting of the previous layer. Then, the pouring of the foam concrete shock-absorbing layer of the whole-ring tunnel needs to be completed in multiple times, and the construction period is long, which seriously restricts the progress of on-site construction.

[0008] A method for manufacturing a tunnel shock-absorbing layer buffer energy absorber, which is applicable to the above-mentioned tunnel shock-absorbing layer buffer energy absorber, and the manufacturing method comprises the following steps:

[0009] A1: Cut the PE pipe into 2m sections and install a plug on one end of the PE pipe using glue;

[0010] A2: Place the PE pipe 1 with one end sealed neatly into the tooling;

[0011] A3: Mix water and cement at a water-cement ratio of 0.6 to form cement slurry; mix water and foaming agent at a ratio of 1:30 to form a mixed solution, introduce gas for physical foaming; the cement slurry and foam are fully mixed in a mixer to form foamed concrete;

[0012] A4: Use a pump to transport the foam concrete to the tooling and pour concrete into the PE pipe. Use a delivery pipe to insert the prepared foam concrete into the PE pipe. The delivery pipe should be inserted to the bottom of the PE pipe and then slowly pulled out. If the pulling speed is too fast, part of the foam concrete will be easily taken out, resulting in the foam concrete in the PE pipe being loose. If the pulling speed is too slow, the foam concrete will overflow and waste materials.

[0013] A5: Let the filled PE pipe stand for more than 7 hours, then use a cleaning device to clean the concrete adhering to the outer wall of the pipe mouth, and fill the PE pipe mouth with foam filling blocks; because the pipe is placed at an angle, the 20cm section of the pipe mouth cannot be filled with foam concrete, so use foam filling blocks to fill this area; use glue to install a plug on the PE pipe mouth;

[0014] A6: Remove the PE pipe filled with foam concrete from the tooling as a whole and leave it to cure for 7 days.

[0015] Preferably, the tooling includes a triangular base and a side wall bracket, the top surface of the triangular base is fixedly connected to the side wall bracket, the acute angle of the triangular base is 15°, and the triangular base and the side wall bracket are both welded from a square tube and a steel plate; during operation, the PE pipe with one end sealed is neatly placed on the top surface of the triangular base, and the inside of the side wall bracket makes the PE pipe neatly stacked at an angle of 15°, which is convenient for the staff to pour foam concrete and at the same time reduces the probability of the PE pipe tipping over.

[0016] Preferably, the method for using the cleaning device in A5 comprises the following steps:

[0017] B1: After the filled PE pipe has been left to stand for more than 7 hours, put the cylinder on the outer ring of the PE pipe mouth so that the wire brush can contact the outer wall of the PE pipe;

[0018] B: Start the electric drill to drive the cylinder to rotate, so that the wire brush on the inner wall of the cylinder scrapes the outer wall of the PE pipe mouth, and the concrete on the outer wall of the PE pipe mouth is scraped and cleaned;

[0019] B: After the cleaning is completed, remove the cylinder and clean the concrete debris inside the cylinder.

[0020] Preferably, the cleaning device comprises an electric drill, a cylinder and a wire brush, the cylinder is clamped in the middle of the chuck of the electric drill, a plurality of wire brushes are fixedly connected around the inner wall of the cylinder, and the inner ring diameter of the cylinder is larger than the outer ring diameter of the PE pipe; when working, after the filled PE pipe is left to stand for more than 7 hours, the cylinder is put on the outer ring of the pipe mouth of the PE pipe, the electric drill is started, and the cylinder is driven to rotate, so that the wire brush on the inner wall of the cylinder scrapes the outer wall of the pipe mouth of the PE pipe, and the concrete on the outer wall of the pipe mouth of the PE pipe is scraped and cleaned, which is convenient for subsequent staff to apply glue, thereby improving the adhesion between the plug and the PE pipe, thereby improving the sealing effect on the foam concrete, and then reducing the probability of the foam concrete being damaged by water.

[0021] Preferably, a sliding hole is provided in the middle of one side of the cylinder body close to the electric drill, a sliding rod is slidably installed in the sliding hole, a No. 1 spring is fixedly connected between the end of the sliding rod and the inner end of the sliding hole, a push plate is slidably installed in the cylinder body, the middle part of the push plate is fixedly connected to the end of the sliding rod, a plurality of groups of bevel teeth are fixedly connected around the outer ring of the push plate, the size of each group of bevel teeth increases from the opening of the cylinder body to the tail, the distance between the tip of each group of bevel teeth and the inner wall of the cylinder body decreases from the opening of the cylinder body to the tail, a cleaning ring is fixedly connected to the outer ring of the push plate away from the opening of the cylinder body, and a plurality of fluffs are fixedly connected to the outer ring of the cleaning ring During operation, when the cylinder is sleeved on the outer ring of the pipe mouth of the PE pipe, the pipe mouth of the PE pipe contacts the push plate, pushing the push plate to slide toward the inside of the cylinder, causing the slide rod to slide into the inside of the slide hole, compressing the No. 1 spring; when the wire brush finishes cleaning the pipe mouth of the PE pipe, the cylinder is moved out from the outside of the pipe mouth of the PE pipe, the No. 1 spring is reset, pushing the slide rod out of the slide hole, pushing the push plate to slide toward the pipe mouth of the PE pipe, driving the oblique bevel teeth to pass through the wire brush, scraping off the concrete mixed in the wire brush, and being pushed out of the cylinder by the cleaning ring, thereby improving the cleaning degree of the wire brush, improving the cleaning effect of the PE pipe, and then improving the adhesion effect of the glue applied to the outer wall of the pipe mouth of the PE pipe.

[0022] Preferably, the outer wall of the slide rod is provided with a thread, and an internal threaded ring is rotatably installed in the middle of a surface of the cylinder body close to the electric drill rig, the outer ring of the slide rod is threadedly matched with the inner ring of the internal threaded ring, the outer ring of the internal threaded ring is fixedly connected with fan blades, and a plurality of wind holes are provided around the outer ring of the tail of the cylinder body, and the wind holes are connected to the interior of the cylinder body; during operation, when the slide rod slides out of the slide hole, it drives the internal threaded ring to rotate, drives the fan blades to rotate, and sucks the outside air into the cylinder body through the wind hole, generates flowing wind, and brings out the dust inside the cylinder body, thereby further improving the cleanliness of the inside of the cylinder body.

[0023] Preferably, an annular groove is provided on the outer ring of the push plate on one side close to the opening of the cylinder body, a slide plate is slidably mounted on the inner ring of the annular groove, and the inner ring of the slide plate rotates in cooperation with the inner ring of the annular groove, and annular magnets are inlaid on one side of the slide plate close to the push plate, and the annular magnets on both sides repel each other; during operation, when the pipe mouth of the PE pipe is close to the push plate, the pipe mouth of the PE pipe contacts the slide plate, pushing the slide plate to slide along the annular groove, so that the annular magnets on both sides are close to each other, so that the repulsive force between the annular magnets on both sides gradually increases, so that a gap is formed between the slide plate and the push plate, thereby reducing the friction resistance between the slide plate and the push plate, and reducing the probability of the PE pipe rotating due to the rotation of the cylinder body, thereby reducing the vibration force of the foam concrete, and then improving the quality of the foam concrete.

[0024] Preferably, a ring seat is fixedly connected to the opening of the inner wall of the cylinder, a plurality of mounting holes are opened around the inner ring of the ring seat, a slide plate is slidably installed inside the mounting hole, a ball is rotatably installed in the middle of the slide plate, and a plurality of No. 2 springs are fixedly connected between the outer ring of the top surface of the slide plate and the top surface of the outer ring of the mounting hole; during operation, when the cylinder is sleeved onto the outer ring of the PE tube, the outer wall of the PE tube contacts the ball, pushing the ball to move toward the outer ring, driving the slide plate to move toward the inside of the mounting hole, compressing the No. 2 spring; the friction between the inner wall of the cylinder and the outer wall of the PE tube is reduced by the rolling of the ball, thereby further improving the stability of the PE tube.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. A tunnel shock-absorbing layer buffer energy absorber and a manufacturing method described in the present invention, by setting a PE pipe, a plug and a foam filling block; the foam concrete is sealed inside by the PE pipe and the plug, which can prevent the tunnel fissure water from entering and destroying the foam concrete; the space between the foam concrete and the PE pipe end is filled by the foam filling block, which reduces the probability of the foam concrete shaking inside the PE pipe and improves the compactness of the foam concrete after solidification; the frame structure made of steel bars is used as a load-bearing structure on the initial support surface of the tunnel, and the prepared buffer energy absorber can be directly installed, which is convenient for workers to construct and install; the construction period is short, and the one-mold full-ring tunnel foam concrete shock-absorbing layer adopts the buffer energy absorber for on-site installation, and the one-mold can be filled and completed in 2-3 days; if the cast-in-place foam concrete construction process is adopted on-site, the foam concrete is layered, and the next layer is poured after the final setting of the previous layer, then the pouring of the one-mold full-ring tunnel foam concrete shock-absorbing layer needs to be completed in multiple times, and the construction period is long, which seriously restricts the progress of on-site construction.

[0027] 2. The tunnel shock-absorbing layer buffer energy absorber and manufacturing method described in the present invention are as follows: after the filled PE pipe is left to stand for more than 7 hours, the cylinder is put on the outer ring of the pipe mouth of the PE pipe, and the electric drill is started to drive the cylinder to rotate, so that the wire brush on the inner wall of the cylinder scrapes the outer wall of the pipe mouth of the PE pipe, and the concrete on the outer wall of the pipe mouth of the PE pipe is scraped and cleaned, which is convenient for subsequent staff to apply glue, improves the adhesion between the plug and the PE pipe, thereby improving the sealing effect of the foam concrete, and then reducing the probability of the foam concrete being damaged by water. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a cross-sectional view of a buffer energy absorber according to Embodiment 1 of the present invention;

[0030] Figure 2 is a three-dimensional diagram of a tooling according to the first embodiment of the present invention;

[0031] Figure 3 is a three-dimensional diagram of a cleaning device according to a first embodiment of the present invention;

[0032] Figure 4 is a cross-sectional view of a cylinder according to Embodiment 1 of the present invention;

[0033] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0034] Figure 6 is a cross-sectional view of the mounting hole of the second embodiment of the present invention;

[0035] Figure 7 It is a flow chart of the manufacturing method of the present invention;

[0036] Figure 8 is a flow chart of a method for using the cleaning device of the present invention;

[0037] In the figure: 1. PE pipe; 2. plug; 3. foam filling block; 4. triangular base; 5. side wall bracket; 6. electric drill; 7. cylinder; 8. wire brush; 9. sliding hole; 10. sliding rod; 11. spring No. 1; 12. push plate; 13. oblique bevel gear; 14. cleaning ring; 15. internal thread ring; 16. fan blade; 17. air hole; 18. ring groove; 19. slide plate; 20. ring magnet; 21. ring seat; 22. mounting hole; 23. slide plate; 24. ball; 25. spring No. 2; 26. ring cavity; 27. sponge ring. DETAILED DESCRIPTION

[0038] 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 explained below in conjunction with specific implementation methods.

[0039] Embodiment 1

[0040] like Figure 1As shown, a tunnel shock-absorbing layer buffer energy absorber according to an embodiment of the present invention comprises a PE tube 1, a plug 2 and a foam filling block 3, wherein the two ends of the PE tube 1 are respectively fixed with the plugs 2, the interior of the PE tube 1 is filled with foam concrete, and a foam filling block 3 is arranged inside one end of the PE tube 1; the foam concrete is sealed inside by the PE tube 1 and the plug 2, so as to prevent the tunnel fissure water from entering and destroying the foam concrete; the space between the foam concrete and the end of the PE tube 1 is filled by the foam filling block 3, so as to reduce the probability of the foam concrete shaking inside the PE tube 1 and improve the foam concrete. The compactness of the foam concrete after solidification; in the initial support surface of the tunnel, steel bars are used to make a frame structure as the load-bearing structure, and the prepared buffer energy absorber can be directly installed, which is convenient for the workers to construct and install; the construction period is short, and the foam concrete shock-absorbing layer of the whole-ring tunnel is installed on-site with the buffer energy absorber, so one mold can be filled in 2-3 days; if the cast-in-place foam concrete construction process is adopted on-site, the foam concrete is layered, and the next layer is poured after the final setting of the previous layer. Then, the pouring of the foam concrete shock-absorbing layer of the whole-ring tunnel needs to be completed in multiple times, and the construction period is long, which seriously restricts the progress of on-site construction.

[0041] like Figure 7 As shown, a method for manufacturing a tunnel shock-absorbing layer buffer energy absorber is applicable to the above-mentioned tunnel shock-absorbing layer buffer energy absorber, and the manufacturing method comprises the following steps:

[0042] A1: Cut the PE pipe 1 into 2m sections and install a plug 2 on one end of the PE pipe 1 using glue;

[0043] A2: Place the PE pipe 1 with one end sealed neatly into the tooling;

[0044] A3: Mix water and cement at a water-cement ratio of 0.6 to form cement slurry; mix water and foaming agent at a ratio of 1:30 to form a mixed solution, introduce gas for physical foaming; the cement slurry and foam are fully mixed in a mixer to form foamed concrete;

[0045] A4: Use a pump to transport the foam concrete to the tooling, and pour concrete into PE pipe 1; insert the prepared foam concrete into the PE pipe through a delivery pipe, and the delivery pipe should be inserted into the PE pipe to the bottom, and then slowly withdraw it. If the withdrawal speed is too fast, part of the foam concrete will be easily taken out, resulting in the foam concrete in the PE pipe being loose; if the withdrawal speed is too slow, the foam concrete will overflow, wasting materials;

[0046] A5: The filled PE pipe 1 is left to stand for more than 7 hours, and then the concrete adhering to the outer wall of the pipe mouth is cleaned with a cleaning device, and the pipe mouth of the PE pipe 1 is filled with a foam filling block 3; since the pipe is placed at an angle, the 20 cm section of the pipe mouth cannot be filled with foam concrete, and the foam filling block 3 is used to fill this area; a plug 2 is installed on the pipe mouth of the PE pipe 1 with glue;

[0047] A6: Remove the PE pipe 1 filled with foam concrete from the tooling as a whole and leave it to stand for 7 days.

[0048] like Figure 2 As shown, the tooling includes a triangular base 4 and a side wall bracket 5, the top surface of the triangular base 4 is fixedly connected with the side wall bracket 5, the acute angle of the triangular base 4 is 15°, and the triangular base 4 and the side wall bracket 5 are both welded by a square tube and a steel plate; when working, the PE pipe 1 with one end blocked is neatly placed on the top surface of the triangular base 4, inside the side wall bracket 5, so that the PE pipe 1 is neatly stacked at an angle of 15°, which is convenient for the staff to pour the foam concrete, and at the same time, reduces the probability of the PE pipe 1 tipping over.

[0049] like Figure 8 As shown, the method for using the cleaning device in A5 comprises the following steps:

[0050] B1: After the filled PE pipe 1 is left to stand for more than 7 hours, the cylinder 7 is placed on the outer ring of the pipe opening of the PE pipe 1 so that the wire brush 8 contacts the outer wall of the PE pipe 1;

[0051] B2: Start the electric drill 6 to drive the cylinder 7 to rotate, so that the wire brush 8 on the inner wall of the cylinder 7 scrapes the outer wall of the pipe mouth of the PE pipe 1, and the concrete on the outer wall of the pipe mouth of the PE pipe 1 is scraped and cleaned;

[0052] B3: After the cleaning is completed, remove the cylinder 7 and clean the concrete debris inside the cylinder 7.

[0053] like Figure 3 to Figure 4 As shown, the cleaning device includes an electric drill 6, a cylinder 7 and a wire brush 8. The cylinder 7 is clamped in the middle of the chuck of the electric drill 6. A plurality of wire brushes 8 are fixedly connected around the inner wall of the cylinder 7. The inner ring diameter of the cylinder 7 is larger than the outer ring diameter of the PE pipe 1. When working, after the filled PE pipe 1 is left to stand for more than 7 hours, the cylinder 7 is sleeved on the outer ring of the pipe mouth of the PE pipe 1, and the electric drill 6 is started to drive the cylinder 7 to rotate, so that the wire brush 8 on the inner wall of the cylinder 7 scrapes the outer wall of the pipe mouth of the PE pipe 1, and the concrete on the outer wall of the pipe mouth of the PE pipe 1 is scraped and cleaned, which is convenient for subsequent staff to apply glue, thereby improving the bonding strength between the plug 2 and the PE pipe 1, thereby improving the sealing effect of the foam concrete, and then reducing the probability of the foam concrete being damaged by water.

[0054] like Figure 4 As shown, a sliding hole 9 is provided in the middle of one side of the cylinder 7 near the electric drill 6, a sliding rod 10 is slidably installed in the sliding hole 9, a spring 11 is fixedly connected between the end of the sliding rod 10 and the inner end of the sliding hole 9, a push plate 12 is slidably installed in the cylinder 7, the middle part of the push plate 12 is fixedly connected to the end of the sliding rod 10, a plurality of groups of oblique bevel teeth 13 are fixedly connected around the outer ring of the push plate 12, the size of each group of the oblique bevel teeth 13 increases from the opening of the cylinder 7 to the tail, and the distance between the tip of each group of the oblique bevel teeth 13 and the inner wall of the cylinder 7 decreases from the opening of the cylinder 7 to the tail, a cleaning ring 14 is fixedly connected to the outer ring of the push plate 12 away from the opening of the cylinder 7, and a plurality of fluffs are fixedly connected to the outer ring of the cleaning ring 14 During operation, when the cylinder 7 is sleeved on the outer ring of the pipe mouth of the PE pipe 1, the pipe mouth of the PE pipe 1 contacts the push plate 12, pushing the push plate 12 to slide toward the inside of the cylinder 7, so that the slide rod 10 slides into the inside of the slide hole 9, so that the No. 1 spring 11 is compressed; when the wire brush 8 finishes cleaning the pipe mouth of the PE pipe 1, the cylinder 7 is moved out from the outside of the pipe mouth of the PE pipe 1, the No. 1 spring 11 is reset, pushing the slide rod 10 to slide out of the slide hole 9, pushing the push plate 12 to slide toward the pipe mouth of the PE pipe 1, driving the oblique bevel teeth 13 to pass through the wire brush 8, scraping off the concrete mixed in the wire brush 8, and being pushed out of the cylinder 7 by the cleaning ring 14, thereby improving the cleaning degree of the wire brush 8, improving the cleaning effect of the PE pipe 1, and then improving the adhesion effect of the glue applied to the outer wall of the pipe mouth of the PE pipe 1.

[0055] like Figure 4 As shown, the outer wall of the slide rod 10 is provided with a thread, and an internal threaded ring 15 is rotatably installed in the middle of one side of the cylinder 7 close to the electric drill 6, the outer ring of the slide rod 10 is threadedly matched with the inner ring of the internal threaded ring 15, and the outer ring of the internal threaded ring 15 is fixedly connected with a fan blade 16, and a plurality of wind holes 17 are provided around the outer ring of the tail of the cylinder 7, and the wind holes 17 are connected to the interior of the cylinder 7; during operation, when the slide rod 10 slides out of the slide hole 9, it drives the internal threaded ring 15 to rotate, drives the fan blades 16 to rotate, and sucks the outside air into the interior of the cylinder 7 through the wind holes 17, generates flowing wind, and brings out the dust inside the cylinder 1, thereby further improving the cleanliness of the inside of the cylinder 7.

[0056] like Figure 4As shown, an annular groove 18 is provided on the outer ring of the push plate 12 near the opening of the cylinder 7, a slide plate 19 is slidably mounted on the inner ring of the annular groove 18, and the inner ring of the slide plate 19 is rotatably matched with the inner ring of the annular groove 18, and the slide plate 19 is inlaid with annular magnets 20 on one side close to the push plate 12, and the annular magnets 20 on both sides repel each other; during operation, when the pipe mouth of the PE pipe 1 is close to the push plate 12, the pipe mouth of the PE pipe 1 contacts the slide plate 19, pushing the slide plate 19 to slide along the annular groove 18, so that the annular magnets 20 on both sides are close to each other, so that the repulsive force between the annular magnets 20 on both sides gradually increases, so that there is a gap between the slide plate 19 and the push plate 12, reducing the friction resistance between the slide plate 19 and the push plate 12, and reducing the probability of the PE pipe 1 rotating due to the rotation of the cylinder 7, thereby reducing the vibration force of the foam concrete, and then improving the quality of the foam concrete.

[0057] like Figures 4 to 5 As shown, a ring seat 21 is fixedly connected to the opening of the inner wall of the cylinder 7, and a plurality of mounting holes 22 are opened around the inner ring of the ring seat 21. A slide plate 23 is slidably installed inside the mounting hole 22, and a ball 24 is rotatably installed in the middle of the slide plate 23. A plurality of No. 2 springs 25 are fixedly connected between the outer ring of the top surface of the slide plate 23 and the top surface of the outer ring of the mounting hole 22. During operation, when the cylinder 7 is sleeved onto the outer ring of the PE pipe 1, the outer wall of the PE pipe 1 contacts the ball 24, pushing the ball 24 to move toward the outer ring, driving the slide plate 23 to move toward the inside of the mounting hole 22, so that the No. 2 spring 25 is compressed. The rolling of the ball 24 reduces the friction between the inner wall of the cylinder 7 and the outer wall of the PE pipe 1, thereby further improving the stability of the PE pipe 1.

[0058] Embodiment 2

[0059] like Figure 6 As shown, compared with Example 1, another implementation of the present invention is: the outer ring of the plurality of mounting holes 22 is provided with an annular cavity 26, the annular cavity 26 is connected to the mounting holes 22, a sponge ring 27 is arranged inside the annular cavity 26, the inner ring of the sponge ring 27 is slidably matched with the outer wall of the ball 24, and the interior of the annular cavity 26 is filled with lubricating oil; during operation, when the ball 24 moves toward the outer ring, the outer wall of the ball 24 contacts the inner wall of the sponge ring 27, so that the lubricating oil inside the sponge ring 27 is smeared on the surface of the ball 24, further improving the smoothness of the rolling of the ball 24, thereby further reducing the friction between the inner wall of the cylinder 7 and the outer wall of the PE pipe 1.

[0060] During work: cut the PE pipe 1 into 2m sections, use glue to install a plug 2 on one end of the PE pipe 1; neatly place the PE pipe 1 with one end plugged in the tooling; mix water and cement into cement slurry at a water-cement ratio of 0.6; mix water and foaming agent into a mixed solution at a ratio of 1:30, introduce gas for physical foaming; the cement slurry and foam are fully mixed in a mixer to form foamed concrete; use a pump to transport the foamed concrete to the tooling, and pour concrete into the PE pipe 1;

[0061] After the filled PE tube 1 is left to stand for more than 7 hours, the cylinder 7 is put on the outer ring of the tube mouth of the PE tube 1. When the tube mouth of the PE tube 1 is close to the push plate 12, the tube mouth of the PE tube 1 contacts the slide plate 19, which pushes the slide plate 19 to slide along the annular groove 18, so that the annular magnets 20 on both sides are close to each other, so that the repulsive force between the annular magnets 20 on both sides gradually increases, so that there is a gap between the slide plate 19 and the push plate 12, and the friction resistance between the slide plate 19 and the push plate 12 is reduced; the push plate 12 is pushed to slide into the inside of the cylinder 7, so that the slide bar 10 slides into the inside of the slide hole 9, so that the No. 1 spring 11 is compressed; at the same time, the outer wall of the PE tube 1 contacts the ball 24, pushing the ball 24 to move toward the outer ring, driving the slide plate 23 to move toward the inside of the mounting hole 22, so that the No. 2 spring 25 is compressed;

[0062] Start the electric drill 6 to drive the cylinder 7 to rotate, so that the wire brush 8 on the inner wall of the cylinder 7 scrapes the outer wall of the pipe mouth of the PE pipe 1, and the concrete on the outer wall of the pipe mouth of the PE pipe 1 is scraped and cleaned; when the wire brush 8 finishes cleaning the pipe mouth of the PE pipe 1, the cylinder 7 is moved out from the outside of the pipe mouth of the PE pipe 1, and the No. 1 spring 11 is reset to push the slide bar 10 to slide out of the slide hole 9, and push the push plate 12 to slide toward the pipe mouth of the PE pipe 1, driving the oblique bevel teeth 13 to pass through the wire brush 8, and the concrete mixed in the wire brush 8 is scraped off, and is pushed out of the cylinder 7 by the cleaning ring 14; at the same time, when the slide bar 10 slides out of the slide hole 9, it drives the internal thread ring 15 to rotate, drives the fan blades 16 to rotate, and sucks the outside air into the cylinder 7 from the air hole 17, generates flowing wind, and takes out the dust inside the cylinder 1;

[0063] After cleaning the outer wall of the PE pipe 1, fill the pipe mouth of the PE pipe 1 with the foam filling block 3; use glue to install a plug 2 to the pipe mouth of the PE pipe 1; remove the PE pipe 1 filled with foam concrete from the tooling as a whole and leave it to stand for 7 days.

[0064] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of 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. A method for manufacturing a tunnel shock-absorbing layer buffer energy absorber, characterized in that: It comprises a PE pipe (1), a plug (2) and a foam filling block (3), wherein the plugs (2) are fixedly connected to both ends of the PE pipe (1), the interior of the PE pipe (1) is filled with foam concrete, and a foam filling block (3) is arranged inside one end of the PE pipe (1); The production method comprises the following steps: A1: Cut the PE tube (1) into 2-meter sections and use glue to install a plug (2) on one end of the PE tube (1); A2: Place the PE pipe (1) with one end sealed neatly into the tooling; A3: Mix water and cement at a water-cement ratio of 0.6 to form cement slurry; mix water and foaming agent at a ratio of 1:30 to form a mixed solution, introduce gas for physical foaming; the cement slurry and foam are fully mixed in a mixer to form foamed concrete; A4: Use a pump to transport the foamed concrete to the tooling site and pour concrete into the PE pipe (1); A5: The filled PE pipe (1) is left to stand for more than 7 hours, and then the concrete adhering to the outer wall of the pipe opening is cleaned using a cleaning device, and the foam filling block (3) is used to fill the pipe opening of the PE pipe (1); a plug (2) is installed on the pipe opening of the PE pipe (1) using glue; A6: Remove the PE pipe (1) filled with foam concrete from the fixture as a whole and leave it to stand for 7 days; The tooling comprises a triangular base (4) and a side wall bracket (5), the top surface of the triangular base (4) is fixedly connected to the side wall bracket (5), the acute angle of the triangular base (4) is 15°, and the triangular base (4) and the side wall bracket (5) are both welded from square tubes and steel plates; The cleaning device comprises an electric drill (6), a barrel (7) and a wire brush (8); the barrel (7) is clamped in the middle of a chuck of the electric drill (6); a plurality of wire brushes (8) are fixedly connected around the inner wall of the barrel (7); and the inner diameter of the barrel (7) is greater than the outer diameter of the PE pipe (1).

2. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 1, characterized in that: The method for using the cleaning device described in A5 comprises the following steps: B1: After the filled PE tube (1) is left to stand for more than 7 hours, the cylinder (7) is placed on the outer ring of the tube opening of the PE tube (1) so that the wire brush (8) contacts the outer wall of the PE tube (1); B2: starting the electric drill (6) to drive the cylinder (7) to rotate, so that the wire brush (8) on the inner wall of the cylinder (7) scrapes the outer wall of the pipe opening of the PE pipe (1), thereby scraping and cleaning the concrete on the outer wall of the pipe opening of the PE pipe (1); B3: After the cleaning is completed, the cylinder (7) is removed and the concrete debris inside the cylinder (7) is cleaned.

3. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 1, characterized in that: A sliding hole (9) is provided in the middle of one side of the cylinder (7) near the electric drill (6), a sliding rod (10) is slidably installed in the sliding hole (9), a No. 1 spring (11) is fixedly connected between the end of the sliding rod (10) and the inner end of the sliding hole (9), a push plate (12) is slidably installed in the cylinder (7), the middle of the push plate (12) is fixedly connected to the end of the sliding rod (10), the outer ring of the push plate (12) is surrounded and fixedly connected with a plurality of groups of oblique bevel teeth (13), the size of each group of the oblique bevel teeth (13) increases from the opening of the cylinder (7) to the tail, and the distance between the tip of each group of the oblique bevel teeth (13) and the inner wall of the cylinder (7) decreases from the opening of the cylinder (7) to the tail, and a cleaning ring (14) is fixedly connected to the outer ring of the push plate (12) away from the opening of the cylinder (7), and a plurality of fluffs are fixedly connected to the outer ring of the cleaning ring (14).

4. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 3, characterized in that: The outer wall of the slide rod (10) is provided with a thread, and an internal thread ring (15) is rotatably installed in the middle of a surface of the cylinder (7) close to the electric drill (6). The outer ring of the slide rod (10) is threadedly matched with the inner ring of the internal thread ring (15), and the outer ring of the internal thread ring (15) is fixedly connected with a fan blade (16). A plurality of air holes (17) are provided around the outer ring of the rear end of the cylinder (7), and the air holes (17) are connected to the interior of the cylinder (7).

5. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 3, characterized in that: An annular groove (18) is formed on the outer ring of the push plate (12) close to the opening of the cylinder (7), a slide plate (19) is slidably mounted on the inner ring of the annular groove (18), and the inner ring of the slide plate (19) is rotatably matched with the inner ring of the annular groove (18), and annular magnets (20) are embedded on the sides of the slide plate (19) close to the push plate (12), and the annular magnets (20) on both sides repel each other.

6. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 5, characterized in that: A ring seat (21) is fixedly connected to the opening of the inner wall of the cylinder (7), and a plurality of mounting holes (22) are formed around the inner ring of the ring seat (21). A slide plate (23) is slidably mounted inside the mounting hole (22), and a ball bearing (24) is rotatably mounted in the middle of the slide plate (23). A plurality of No. 2 springs (25) are fixedly connected between the outer ring of the top surface of the slide plate (23) and the top surface of the outer ring of the mounting hole (22).

7. The method for manufacturing a tunnel shock-absorbing layer buffer energy absorber according to claim 6, characterized in that: An annular cavity (26) is formed on the outer ring of the plurality of mounting holes (22), the annular cavity (26) is connected to the mounting holes (22), a sponge ring (27) is arranged inside the annular cavity (26), the inner ring of the sponge ring (27) is slidably matched with the outer wall of the ball (24), and the interior of the annular cavity (26) is filled with lubricating oil.

Images