A homogenizing device for shotcrete reinforcement of tunnel inner wall

Abstract

The present invention relates to the technical field of grouting reinforcement, and specifically to a tunnel inner wall grouting reinforcement homogenization device, comprising a supporting mechanism and a stirring barrel, wherein the supporting mechanism comprises a U-shaped seat as a base, the outer side wall of the U-shaped seat is fixedly connected with a supporting frame, and the inner top end of the U-shaped seat is provided with a homogenization mechanism for mixing materials. After the homogenization mechanism is used, in order to remove the attachments generated in the stirring barrel due to the solidification of slurry, a driving mechanism is provided as a main power source, which then drives the knocking mechanism to work, and continuously impacts the inner wall of the stirring barrel, thereby removing the attachments from the inner wall of the stirring barrel by vibration. When the knocking mechanism is located at the extreme position inside the stirring barrel, the rotary mechanism will clean the end of the liquid extraction core tube to avoid blockage caused by too much slurry remaining on the outer wall of the liquid extraction core tube during drainage, thereby affecting the construction.

Description

Technical Field

[0001] The present invention relates to the technical field of shotcrete reinforcement, and particularly to a homogenizing device for shotcrete reinforcement of tunnel inner walls. Background Art

[0002] As an important part of the modern transportation system, the safety and stability of tunnels are of great significance for ensuring smooth traffic and the safety of people's lives and property. With the acceleration of the urbanization process and the continuous advancement of infrastructure construction, the number and scale of tunnel construction continue to increase, and the requirements for the structural stability of tunnels are also getting higher and higher. The shotcrete reinforcement technology for tunnel inner walls mainly forms a solid protective layer by spraying high-pressure concrete or other composite materials onto the tunnel wall surface to enhance the structural stability of the tunnel. The slurries used for reinforcement mostly adopt cement, bentonite, mortar, cellulose, etc. Through specific mixing ratios and mixing processes, uniform slurries are formed, and then evenly applied to the tunnel wall surface in a high-pressure spraying manner by a shotcreting machine.

[0003] In the shotcrete reinforcement technology for tunnel inner walls, the mixing barrel is a key device for preparing shotcrete materials. Its interior often generates attachments due to the long-term retention and solidification of the slurries. These attachments not only affect the volume and mixing efficiency of the mixing barrel, but also may cause uneven mixing, thereby affecting the quality of the shotcrete materials and the reinforcement effect of the tunnel. When the slurries solidify in the mixing barrel, the formed attachments are often stubborn and difficult to remove by simple rinsing or scraping. This not only increases the cleaning difficulty, but also may damage the inner wall of the mixing barrel, shortening its service life. At the same time, during the liquid discharge process, the slurries are likely to remain on the outer wall of the liquid extraction pipe. If not cleaned in time, these residues may gradually accumulate and cause blockage. Once the liquid extraction pipe is blocked, it will seriously affect the installation and use of subsequent suction equipment, and may even lead to construction interruption, bringing great inconvenience and losses to the tunnel reinforcement project.

[0004] Therefore, we propose a homogenizing device for shotcrete reinforcement of tunnel inner walls. Summary of the Invention

[0005] The purpose of the present invention is to provide a homogenizing device for shotcrete reinforcement of tunnel inner walls to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A tunnel inner wall shotcrete reinforcement homogenization device, including a support mechanism and a mixing barrel. The support mechanism includes a U-shaped seat, one side of the U-shaped seat is fixedly connected with a support frame, the inner top end of the U-shaped seat is provided with a homogenization mechanism for homogenizing materials, and one side of the U-shaped seat close to the homogenization mechanism is provided with an adjustment component and a pressing mechanism for controlling its operation. Two slide rails are symmetrically and fixedly connected to the upper part of the support frame, and two fixed sliding sleeves are sleeved on the two slide rails. Two groups of second electric push rods and third electric push rods are symmetrically and fixedly connected to the lower part of the fixed sliding sleeve. The telescopic ends of the two third electric push rods are fixedly connected with a load-bearing plate. A plurality of knocking mechanisms for impacting the attachments on the inner wall of the mixing barrel are arranged below the load-bearing plate. A driving mechanism for providing power for the knocking mechanism is arranged above the load-bearing plate. A rotating mechanism is arranged below the load-bearing plate. A protection mechanism for protection and connecting the two knocking mechanisms is arranged outside the knocking mechanism.

[0007] As a preference of the above technical solution, the support mechanism further includes an arc-shaped plate fixedly connected to the inner side wall of the support frame. One side of the arc-shaped plate is fixedly connected with a first electric push rod, and the telescopic end of the first electric push rod is fixedly connected with the fixed sliding sleeve. A support seat for supporting the mixing barrel is arranged on the upper end surface of the U-shaped seat.

[0008] As a preference of the above technical solution, the homogenization mechanism includes a motor box fixedly connected to the outer side wall of the mixing barrel. A first motor is fixedly connected inside the motor box. A center plate is fixedly connected to the upper end of the mixing barrel. An outer support frame is fixedly connected to the inner side wall of the mixing barrel below the center plate, and the outer support frame penetrates to the outside of the mixing barrel and communicates with the inside of the motor box. The inner bottom end of the mixing barrel is connected with a liquid suction core tube for pumping out the slurry through a bearing, and the end of the liquid suction core tube extends above the center plate. A suction port for the slurry to enter is opened in the lower part of the liquid suction core tube. A stirring rod is rotatably sleeved on the liquid suction core tube, and the end of the stirring rod extends into the inside of the outer support frame. First synchronous wheels are fixedly sleeved on the driving end of the first motor and the extending end of the stirring rod extending into the outer support frame. The two first synchronous wheels are connected by a first synchronous belt. Stirring blades for stirring the slurry are symmetrically and fixedly connected to the stirring rod. A toothed ring is fixedly connected to the outer circumferential wall of the mixing barrel. Positioning plates are symmetrically installed on the outer wall of the mixing barrel. Positioning holes for positioning are opened on both the mixing barrel and the positioning plates. The positioning holes on the positioning plates are inserted and matched with the positioning holes on the mixing barrel through positioning pins. A rotating rod is fixedly connected to the side of the positioning plate away from the mixing barrel. The end of the rotating rod is rotatably sleeved on the U-shaped seat, and one of the rotating rods extends to the outer side wall of the U-shaped seat. A third straight gear is fixedly connected to the extending end of the rotating rod extending to the outer side wall of the U-shaped seat.

[0009] As a preference of the above technical solution, the adjusting assembly includes a second motor fixedly connected to the top of the inner side wall of the U-shaped seat. The output end of the second motor is fixedly connected with a spline shaft. A second straight gear meshing and driving with the toothed ring is slidably sleeved on the spline shaft. A first gear seat is fixedly connected to the inner side wall of the U-shaped seat below the second motor. The inner top end of the first gear seat is rotatably connected with a first bevel gear. The inner side wall of the first gear seat is rotatably connected with a second bevel gear meshing and driving with the first bevel gear. The second bevel gear is rotatably installed on the U-shaped seat through a fixed shaft. One end of the fixed shaft away from the second bevel gear penetrates through the U-shaped seat and is fixedly connected with a first straight gear. The first straight gear meshes and drives with the third straight gear.

[0010] As a preference of the above technical solution, the pressing mechanism includes a hydraulic push rod fixedly connected to the top of the inner side wall of the U-shaped seat. The telescopic end of the hydraulic push rod faces downward and is fixedly connected with a clamping plate. A limiting sleeve is fixedly connected to the central axis position of the upper part of the second straight gear. The limiting sleeve is slidably sleeved on the spline shaft. The end of the clamping plate is rotatably sleeved on the limiting sleeve. A upper chuck is coaxially fixedly connected to the lower part of the second straight gear. A lower chuck meshing and driving with the upper chuck is coaxially fixedly connected to the upper part of the first bevel gear. The lower chuck is located above the first gear seat.

[0011] As a preference of the above technical solution, the driving mechanism includes a third motor fixedly connected to the upper part of the load-bearing plate. The output end of the third motor is fixedly connected with a driving shaft. A first sprocket is sleeved on the driving shaft. Second sprockets are symmetrically and rotatably connected to the upper part of the load-bearing plate. The two second sprockets and the first sprocket are connected by a first chain. A second gear seat is fixedly connected to the bottom of the load-bearing plate. A fourth bevel gear is rotatably connected to the side wall of the second gear seat. A third bevel gear coaxial with the second sprocket is rotatably connected to the second gear seat. The third bevel gear meshes and drives with the fourth bevel gear. Extended plates are fixedly connected to both ends of the bottom of the load-bearing plate.

[0012] Preferably, as the above technical solution, the knocking mechanism includes a housing main body. An impact shovel head that impacts the inner wall of the stirring barrel is clamped at the end of the housing main body. A bearing frame is fixedly connected to the upper part of the housing main body. One end of the extension plate away from the load-bearing plate is fixedly sleeved with the end of the bearing rod through a bearing. The bearing frame is sleeved with the bearing rod through a bearing. An eccentric bearing is fixedly connected to the bearing rod. A large cylinder sleeve is fixedly connected to the inner wall of the housing main body. An impact rod is slidably connected to the inner wall of the large cylinder sleeve. A return spring for assisting the impact rod to return is fixedly connected to the inner wall of the housing main body. A small cylinder sleeve is slidably connected to the inner wall of the large cylinder sleeve on one side of the impact rod. A one-way intake valve is arranged on the outer wall of the small cylinder sleeve. A sliding sleeve is fixedly connected to the end of the small cylinder sleeve away from the impact shovel head. A piston that impacts the end of the impact rod is slidably connected to the inner wall of the small cylinder sleeve. A bearing sleeve is rotatably sleeved on the outer wall of the eccentric bearing. The end of the bearing sleeve is slidably sleeved with the sliding sleeve. A second synchronous wheel is fixedly connected to the end of the bearing rod away from the eccentric bearing and the fourth bevel gear coaxially. The two second synchronous wheels are connected by a second synchronous belt. The second synchronous wheel fixedly connected to the fourth bevel gear coaxially is located on the outer wall of the second gear seat.

[0013] Preferably, as the above technical solution, the protection mechanism includes a protection frame fixedly connected to the outer walls of the two housing main bodies. A trapezoidal frame is fixedly connected to the outer wall of the protection frame located between the two housing main bodies. A protective cover is fixedly connected to the end of the trapezoidal frame away from the protection frame. The ends of the two bearing rods are arranged inside the protective cover through bearings. Third sprockets are fixedly sleeved on the ends of the two bearing rods extending to the inside of the protective cover. The two third sprockets are connected by a second chain.

[0014] Preferably, as the above technical solution, the slewing mechanism includes a circular plate rotatably sleeved under the load-bearing plate. A plurality of extension rods are fixedly connected to the inner ring wall of the circular plate in an annular array. The end of the drive shaft extends below the load-bearing plate. The end of the extension rod is fixedly connected to the extended end of the drive shaft. A support frame is fixedly connected to the outer wall of the circular plate. A limit bolt is threadedly sleeved on the support frame. A scraping plate is slidably connected to the inner bottom end of the support frame. The scraping plate contacts the outer wall of the liquid extraction core pipe. The end of the limit bolt is rotatably connected to the scraping plate.

[0015] Preferably, the ends of the small cylinder sleeve and the sliding sleeve away from the impact rod penetrate into the protective cover. The telescopic end of the second electric push rod is fixedly connected to a square steel. The end of the square steel is fixedly connected to the upper part of the protection frame.

[0016] The beneficial effects of the present invention are:

[0017] After the homogenizing mechanism of the present invention is used, in order to remove the attachments generated by the solidification of slurry inside the mixing barrel, the driving mechanism serves as a power source to drive the knocking mechanism to work and impact the inner wall of the mixing barrel to remove the attachments from the inner wall of the mixing barrel by vibration. When the knocking mechanism is located inside the mixing barrel, the rotating mechanism cleans the end of the liquid extraction core tube to avoid excessive slurry remaining on the outer wall of the liquid extraction core tube during drainage, causing blockage and affecting construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the back side of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the side surface of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the knocking mechanism in the present invention when viewed from above;

[0022] Figure 5 It is a structural schematic diagram of the side surface of the support mechanism in the present invention;

[0023] Figure 6 It is a structural schematic diagram of the homogenization mechanism in the present invention;

[0024] Figure 7 It is a schematic diagram of the dissected structure of the stirring barrel in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the adjustment mechanism in the present invention;

[0026] Figure 9 It is a schematic diagram of the split structure of the adjustment mechanism and the pressing mechanism in the present invention;

[0027] Figure 10 It is a structural schematic diagram of the driving mechanism in the present invention;

[0028] Figure 11 It is a schematic diagram of the split structure of the driving mechanism in the present invention;

[0029] Figure 12 It is a structural schematic diagram of the rotary mechanism in the present invention;

[0030] Figure 13 It is a schematic diagram of the partial dissected structure of the protection mechanism and the knocking mechanism in the present invention;

[0031] Figure 14 It is a schematic diagram of the partial dissected structure of the striking mechanism in the present invention.

[0032] In the figure: 1. Support mechanism; 11. U-shaped seat; 12. Support frame; 13. Arc plate; 14. Slide rail; 15. First electric push rod; 16. Fixed sliding sleeve; 17. Second electric push rod; 171. Square steel; 18. Third electric push rod; 19. Support base; 2. Homogenizing mechanism; 21. Motor box; 211. Outer support frame; 22. First motor; 221. First synchronous pulley; 222. First synchronous belt; 23. Stirring barrel; 231. Central plate; 232. Positioning hole; 233. Positioning plate; 234. Positioning pin; 235. Rotating rod; 24. Tooth ring; 25. Stirring rod; 26. Liquid suction core tube; 27. Suction port; 28. Stirring blade; 3. Adjusting assembly; 31. Second motor; 32. Spline shaft; 33. First gear seat; 331. First bevel gear; 332. Second bevel gear; 333. Fixed shaft; 334. First straight gear; 34. Second straight gear; 35. Third straight gear; 4. Pressing mechanism; 41. Hydraulic push rod; 42. Clamping plate; 43. Limit sleeve; 44. Upper chuck; 45. Lower chuck; 5. Driving mechanism; 51. Third motor; 52. Driving shaft; 53. First sprocket; 54. Second sprocket; 55. First chain; 56. Load-bearing plate; 561. Extension plate; 57. Second gear seat; 571. Third bevel gear; 572. Fourth bevel gear; 58. Second synchronous pulley; 59. Second synchronous belt; 6. Knocking mechanism; 61. Outer shell body; 62. Bearing frame; 63. Eccentric bearing; 631. Bearing sleeve; 632. Bearing rod; 64. Large cylinder sleeve; 65. Small cylinder sleeve; 651. One-way air inlet valve; 652. Sliding sleeve; 653. Piston; 66. Impact rod; 661. Return spring; 67. Impact shovel head; 7. Protection mechanism; 71. Protection frame; 72. Trapezoidal frame; 73. Protective cover; 74. Third sprocket; 75. Second chain; 8. Rotary mechanism; 81. Circular plate; 82. Extension rod; 83. Support frame; 84. Limit bolt; 85. Scraper. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figure 1 - Figure 14, the present invention provides a technical solution: a tunneling inner wall shotcrete reinforcement homogenization device, including a support mechanism 1 and a mixing barrel 23. The support mechanism 1 includes a U-shaped base 11 serving as a base. One side of the U-shaped base 11 is fixedly connected to a support frame 12. The inner top end of the U-shaped base 11 is provided with a homogenization mechanism 2 for homogenizing materials. One side of the U-shaped base 11 close to the homogenization mechanism 2 is provided with an adjustment component 3 and a pressing mechanism 4 for controlling its operation. Two slide rails 14 are symmetrically and fixedly connected to the upper part of the support frame 12. A fixed sliding sleeve 16 is sleeved on the two slide rails 14. Two groups of second electric push rods 17 and third electric push rods 18 are symmetrically and fixedly connected to the lower part of the fixed sliding sleeve 16. The telescopic ends of the two third electric push rods 18 are fixedly connected to a load-bearing plate 56. A plurality of knocking mechanisms 6 for impacting the attachments on the inner wall of the mixing barrel 23 are arranged below the load-bearing plate 56. A driving mechanism 5 for providing power to the knocking mechanism 6 is arranged above the load-bearing plate 56. A rotating mechanism 8 is arranged below the load-bearing plate 56. A protective mechanism 7 serving as protection and connecting the two knocking mechanisms 6 is arranged outside the knocking mechanism 6.

[0035] Adopting the above technical solution, the homogenization mechanism 2 realizes the full homogenization of the tunneling inner wall shotcrete material, ensuring the uniformity and stability of the reinforcement material. The combination of the slide rails 14 and the fixed sliding sleeve 16, as well as the application of the second electric push rod 17 and the third electric push rod 18, enables the knocking mechanism 6 to move in the horizontal and vertical directions. The driving mechanism 5 provides stable power for the knocking mechanism 6, ensuring the continuity of the knocking action and the consistency of the force. The multiple groups of knocking mechanisms 6 arranged on the lower end surface of the load-bearing plate 56 effectively remove the residues attached to the inner wall of the mixing barrel 23 under the drive of the driving mechanism 5, preventing the equipment from being blocked due to material solidification and extending the service life of the equipment. The protective mechanism 7 provides necessary protection for the knocking mechanism 6, preventing it from being damaged due to direct impact, and also serves as a connecting bridge between the two knocking mechanisms 6, enhancing the overall stability and coordination.

[0036] Please refer to Figure 1 - Figure 4 , the support mechanism 1 further includes an arc-shaped plate 13 fixedly connected to the inner side wall of the support frame 12. One side of the arc-shaped plate 13 is fixedly connected to a first electric push rod 15. The telescopic end of the first electric push rod 15 is fixedly connected to the fixed sliding sleeve 16. A support seat 19 for supporting the mixing barrel 23 is arranged on the upper end surface of the U-shaped base 11.

[0037] Adopting the above technical solution, a first electric push rod 15 is installed on the arc-shaped plate 13 symmetrically and fixedly connected to the inner side wall of the support frame 12, and is fixedly connected to the outer side wall of the fixed sliding sleeve 16, forming a stable support and adjustment system. The automatic telescopic function of the first electric push rod 15 simplifies the movement and positioning process of the knocking mechanism 6, reduces the complexity and time cost of manual operation. The operator only needs to set the target position and parameters through the control panel, and the first electric push rod 15 can automatically complete the telescopic action, accurately delivering the knocking mechanism 6 to the designated position, thus optimizing the operation process.

[0038] Please refer to Figure 3 - Figure 7 As shown in, the homogenizing mechanism 2 includes a motor box 21 fixedly connected to the outer side wall of the stirring barrel 23. A first motor 22 is fixedly connected inside the motor box 21. A center plate 231 is fixedly connected to the upper end of the stirring barrel 23. An outer support frame 211 is fixedly connected to the inner side wall of the stirring barrel 23 below the center plate 231, and the outer support frame 211 penetrates to the outside of the stirring barrel 23 and communicates with the inside of the motor box 21. A liquid suction core tube 26 for pumping the slurry away is connected to the inner bottom end of the stirring barrel 23 through a bearing, and the end of the liquid suction core tube 26 extends above the center plate 231. A suction port 27 for the slurry to enter is provided in the lower part of the liquid suction core tube 26. A stirring rod 25 is rotatably sleeved on the liquid suction core tube 26, and the end of the stirring rod 25 extends into the inside of the outer support frame 211. First synchronous wheels 221 are fixedly sleeved on the driving end of the first motor 22 and the extending end of the stirring rod 25 extending into the outer support frame 211. The two first synchronous wheels 221 are connected by a first synchronous belt 222. Stirring blades 28 for stirring the slurry are symmetrically and fixedly connected to the stirring rod 25. A toothed ring 24 is fixedly connected to the outer circumferential wall of the stirring barrel 23. Positioning plates 233 are symmetrically installed on the outer wall of the stirring barrel 23. Positioning holes 232 for positioning are provided on both the stirring barrel 23 and the positioning plates 233. The positioning holes 232 on the positioning plates 233 are inserted and matched with the positioning holes 232 on the stirring barrel 23 through positioning pins 234. A rotating rod 235 is fixedly connected to the side of the positioning plate 233 away from the stirring barrel 23. The end of the rotating rod 235 is rotatably sleeved on the U-shaped seat 11, and one of the rotating rods 235 extends to the outer side wall of the U-shaped seat 11. A third straight gear 35 is fixedly connected to the extending end of the rotating rod 235 extending to the outer side wall of the U-shaped seat 11.

[0039] With the above technical solution, the first motor 22 transmits power to the stirring rod 25 through the first synchronous pulley 221 and the first synchronous belt 222, causing the stirring rod 25 and the stirring blade 28 to rotate efficiently inside the stirring barrel 23, ensuring that the slurry is fully and evenly mixed inside the stirring barrel 23, improving the quality and stability of the shotcrete reinforcement material. The liquid extraction core tube 26 not only effectively extracts the slurry at the bottom of the stirring barrel 23 through the suction port 27 to achieve the circulating flow of the slurry, but also further enhances the stirring effect through the design of rotatably sleeving the stirring rod 25 on the liquid extraction core tube 26. It not only improves the mixing uniformity of the slurry, but also promotes the discharge of air bubbles inside the slurry, reduces the air bubble problem during the shotcrete process, and improves the density and strength of the reinforcement layer. Through the combination of the positioning plate 233, the positioning hole 232 and the positioning pin 234, the flexible positioning of the stirring barrel 23 on the U-shaped seat 11 is realized, which not only ensures the stability of the stirring barrel 23 during operation, but also facilitates the operator to adjust the position of the stirring barrel 23 according to actual needs to adapt to different construction scenarios.

[0040] Please refer to Figure 8 and Figure 9 As shown in, the adjusting assembly 3 includes a second motor 31 fixedly connected to the top of the inner side wall of the U-shaped seat 11. The output end of the second motor 31 is fixedly connected with a spline shaft 32. A second straight gear 34 meshing and driving with the toothed ring 24 is slidably sleeved on the spline shaft 32. A first gear seat 33 is fixedly connected to the inner side wall of the U-shaped seat 11 below the second motor 31. The inner top end of the first gear seat 33 is rotatably connected with a first bevel gear 331. The inner side wall of the first gear seat 33 is rotatably connected with a second bevel gear 332 meshing and driving with the first bevel gear 331. The second bevel gear 332 is rotatably installed on the U-shaped seat 11 through a fixed shaft 333. One end of the fixed shaft 333 away from the second bevel gear 332 passes through the U-shaped seat 11 and is fixedly connected with a first straight gear 334. The first straight gear 334 meshes and drives with a third straight gear 35.

[0041] With the above technical solution, the adjusting assembly 3 takes the second motor 31 as the power source, and realizes the meshing and driving with the toothed ring 24 by slidably sleeving the spline shaft 32 with the second straight gear 34, thereby precisely controlling the rotation of the stirring barrel 23, which not only improves the efficiency and stability of the transmission, but also ensures the precise positioning of the stirring barrel 23 during rotation. The meshing and driving of the first bevel gear 331 and the second bevel gear 332, and the meshing of the first straight gear 334 and the third straight gear 35 on the fixed shaft 333 form a stable and efficient transmission link. Since the third straight gear 35 is fixedly connected to the rotating rod 235, when the first straight gear 334 and the third straight gear 35 are meshed, the rotation of the rotating rod 235 can be driven, and the rotating rod 235 is connected to the positioning plate 233, and the positioning plate 233 is rotatably sleeved with the stirring barrel 23 ( Figure 6As can be seen, when the rotating rod 235 rotates, it can drive the stirring barrel 23 to adjust its angle, facilitating the removal of the materials knocked down inside it.

[0042] Please refer to Figure 8 and Figure 9 As shown in FIGS. and, the pressing mechanism 4 includes a hydraulic push rod 41 fixedly connected to the top of the inner side wall of the U-shaped seat 11. The telescopic end of the hydraulic push rod 41 faces downward and is fixedly connected with a clamping plate 42. A limiting sleeve 43 is fixedly connected to the central axis position of the upper part of the second straight gear 34. The limiting sleeve 43 is slidably sleeved on the spline shaft 32. The end of the clamping plate 42 is rotatably sleeved on the limiting sleeve 43. A upper chuck 44 is coaxially fixedly connected to the lower part of the second straight gear 34. A lower chuck 45 meshingly driven with the upper chuck 44 is coaxially fixedly connected to the upper part of the first bevel gear 331. The lower chuck 45 is located above the first gear seat 33.

[0043] With the above technical solution, the pressing mechanism 4 realizes the fine regulation of the meshing transmission between the second straight gear 34 and the tooth ring 24 through the telescopic function of the hydraulic push rod 41. The telescopic end of the hydraulic push rod 41 is fixedly connected with the clamping plate 42, and the clamping plate 42 is rotatably sleeved on the outer wall of the limiting sleeve 43, ensuring the stability of the second straight gear 34 during the transmission process. The pressing mechanism 4 realizes the power transmission between the first bevel gear 331 and the second straight gear 34 through the meshing transmission of the upper chuck 44 and the lower chuck 45, simplifies the transmission link, reduces the energy loss and frictional loss, and improves the transmission efficiency and stability. By means of the telescopic property of the hydraulic push rod 41, the second straight gear 34 is driven to separate from the tooth ring 24. At this time, the upper chuck 44 and the lower chuck 45 are meshed, driving the first bevel gear 331 and the second bevel gear 332 to mesh and drive. At this time, the first straight gear 334 and the third straight gear 35 drive the stirring barrel 23 to rotate through the rotating rod 235. At this time, the stirring barrel 23 is tilted to take out the residues inside it.

[0044] Please refer to Figure 10 and Figure 11 As shown in FIGS. and, the driving mechanism 5 includes a third motor 51 fixedly connected to the upper part of the load-bearing plate 56. The output end of the third motor 51 is fixedly connected with a driving shaft 52. A first sprocket 53 is sleeved on the driving shaft 52. The upper part of the load-bearing plate 56 is symmetrically and rotatably connected with second sprockets 54. The two second sprockets 54 and the first sprocket 53 are connected by a first chain 55. The bottom of the load-bearing plate 56 is fixedly connected with a second gear seat 57. A fourth bevel gear 572 is rotatably connected to the side wall of the second gear seat 57. A third bevel gear 571 coaxial with the second sprocket 54 is rotatably connected to the second gear seat 57. The third bevel gear 571 and the fourth bevel gear 572 are meshingly driven. The two ends of the bottom of the load-bearing plate 56 are fixedly connected with extension plates 561.

[0045] With the above technical solution, the core of the driving mechanism 5 lies in that the third motor 51 provides power. Through the transmission system composed of the drive shaft 52, the first sprocket 53, the second sprocket 54 and the first chain 55, the stable transmission of power is achieved, which not only improves the transmission efficiency, reduces the energy loss, but also ensures the stability of power during the transmission process, avoiding power attenuation caused by vibration or friction. The driving mechanism 5 realizes efficient power transmission through the meshing transmission of the third bevel gear 571 and the fourth bevel gear 572. The meshing transmission of the third bevel gear 571 and the fourth bevel gear 572 has a self-locking function, which can prevent the transmission failure caused by external interference to a certain extent, and further improves the reliability and safety of the equipment. The second gear seat 57 and the extension plate 561 provide stable support for the connection between the fourth bevel gear 572 and the lower transmission components. The main components of the driving mechanism 5 are concentrated on the load-bearing plate 56, which not only protects these components from external environmental interference, but also facilitates the operator's daily inspection and maintenance work.

[0046] Please refer to Figure 10 and Figure 14 , the knocking mechanism 6 includes a housing main body 61. An impact shovel head 67 that impacts the inner wall of the mixing barrel 23 is clamped at the end of the housing main body 61. A bearing bracket 62 is fixedly connected to the upper part of the housing main body 61. One end of the extension plate 561 away from the load-bearing plate 56 is fixedly sleeved with the end of the bearing rod 632 through a bearing. The bearing bracket 62 is sleeved with the bearing rod 632 through a bearing. An eccentric bearing 63 is fixedly connected to the bearing rod 632. A large cylinder sleeve 64 is fixedly connected to the inner wall of the housing main body 61. An impact rod 66 is slidably connected to the inner wall of the large cylinder sleeve 64. A return spring 661 for assisting the impact rod 66 to reset is fixedly connected to the inner wall of the large cylinder sleeve 64. A small cylinder sleeve 65 is slidably connected to the inner wall of the large cylinder sleeve 64 on one side of the impact rod 66. A one-way intake valve 651 is arranged on the outer wall of the small cylinder sleeve 65. A sliding sleeve 652 is fixedly connected to one end of the small cylinder sleeve 65 away from the impact shovel head 67. A piston 653 that impacts the end of the impact rod 66 is slidably connected to the inner wall of the small cylinder sleeve 65. The outer wall of the eccentric bearing 63 is rotatably sleeved with a bearing sleeve 631. The end of the bearing sleeve 631 is slidably sleeved with the sliding sleeve 652. The end of the bearing rod 632 away from the eccentric bearing 63 and the fourth bevel gear 572 are coaxially and fixedly connected with a second synchronous wheel 58. The two second synchronous wheels 58 are connected by a second synchronous belt 59. The second synchronous wheel 58 coaxially and fixedly connected with the fourth bevel gear 572 is located on the outer wall of the second gear seat 57.

[0047] With the above technical solution, the knocking mechanism 6 realizes efficient knocking and homogenization of the inner wall of the stirring barrel 23 through the ingenious combination of the eccentric bearing 63 and the bearing rod 632, as well as the impact mechanism between the impact rod 66 and the piston 653. The impact shovel head 67 further enhances the knocking force, making the knocking deeper, effectively avoiding the problem of adhesion caused by the solidification due to slurry accumulation. The knocking mechanism 6 realizes synchronous rotation with the fourth bevel gear 572 through the transmission mechanism of the second synchronous pulley 58 and the second synchronous belt 59. The eccentric bearing 63 is slidably sleeved with the bearing sleeve 631, enabling the bearing sleeve 631 to swing, making the knocking action smoother. The large cylinder sleeve 64 is slidably connected to the small cylinder sleeve 65, and the return spring 661 assists in resetting, enabling the knocking mechanism 6 to maintain stability and continuity during the knocking process. In addition, the one-way air inlet valve 651 provides the necessary air pressure support for the impact of the piston 653, enhancing the knocking effect.

[0048] Please refer to Figure 13 and Figure 14 As shown in and, the protection mechanism 7 includes a protective frame 71 fixedly connected to the outer walls of the two housing bodies 61. A trapezoidal frame 72 is fixedly connected to the outer side wall of the protective frame 71 located between the two housing bodies 61. One end of the trapezoidal frame 72 away from the protective frame 71 is fixedly connected to a protective cover 73. The ends of the two bearing rods 632 are arranged inside the protective cover 73 through bearings. A third sprocket 74 is fixedly sleeved on one end of each of the two bearing rods 632 extending to the inner side of the protective cover 73. The two third sprockets 74 are connected by a second chain 75.

[0049] With the above technical solution, the protection mechanism 7 forms an all-round protection system through the protective frame 71 fixedly connected to the outer walls of the two housing bodies 61, as well as the trapezoidal frame 72 and the protective cover 73 located between the two housing bodies 61. The protective cover 73 protects the bearing rod 632 and its related components, avoiding damage caused by impacts, friction, etc., and extending the service life of the equipment. The connection between the third sprocket 74 and the second chain 75 in the protection mechanism 7 realizes the synchronous rotation between the two bearing rods 632, not only simplifying the transmission link, reducing energy loss, but also ensuring the stability and continuity of the knocking mechanism 6 during the knocking process. The fixed connection between the trapezoidal frame 72 and the protective cover 73, as well as the transmission mechanism of the third sprocket 74 and the second chain 75, ensure that the knocking mechanism 6 will not shift or loosen during the knocking process.

[0050] Please refer to Figure 11 and Figure 12, the slewing mechanism 8 includes a circular plate 81 rotatably sleeved on the lower part of the load-bearing plate 56. A plurality of extension rods 82 are fixedly connected to the inner ring wall of the circular plate 81 in an annular array. The end of the drive shaft 52 extends below the load-bearing plate 56, and the end of the extension rod 82 is fixedly connected to the extended end of the drive shaft 52. The outer side wall of the circular plate 81 is fixedly connected with a support frame 83. A limit bolt 84 is threadedly sleeved on the support frame 83. The inner bottom end of the support frame 83 is slidably connected with a scraping plate 85. The scraping plate 85 contacts the outer wall of the liquid extraction core tube 26, and the end of the limit bolt 84 is rotatably connected to the scraping plate 85.

[0051] With the above technical solution, the circular plate 81 is connected to the support frame 83, providing a stable support platform for the scraping plate 85 to ensure the stability of the scraping plate 85 when scraping the residual slurry on the outer wall of the liquid extraction core tube 26. The end of the limit bolt 84 is rotatably connected to the scraping plate 85, realizing the sliding adjustment of the scraping plate 85 inside the support frame 83. The extension rod 82 is fixedly connected to the extended end of the drive shaft 52, realizing the rotational movement of the circular plate 81. The scraping plate 85 moves around the outer wall of the liquid extraction core tube 26 to realize the scraping of the solidified slurry.

[0052] Please refer to Figure 10 and Figure 13 , the small cylinder sleeve 65 and the sliding sleeve 652 penetrate into the protective cover 73 at one end far from the impact rod 66. The telescopic end of the second electric push rod 17 is fixedly connected with a square steel 171, and the end of the square steel 171 is fixedly connected with the upper part of the protective frame 71.

[0053] With the above technical solution, the telescopic end of the second electric push rod 17 drives the telescopic movement of the protective frame 71. The protective frame 71 cooperates with the knocking mechanism 6 to drive the knocking mechanism 6 to move up and down. At the same time, the second electric push rod 17 and the third electric push rod 18 move synchronously, driving the knocking mechanism 6 and the driving mechanism 5 to move down synchronously, avoiding the situation of pulling caused by non-synchronization between the two, resulting in equipment damage.

[0054] Working principle:

[0055] The telescopic end of the first electric push rod 15 drives the fixed sliding sleeve 16 to move on the slide rail 14. A driving mechanism 5 and a knocking mechanism 6 are arranged at the lower end of the fixed sliding sleeve 16. When the driving mechanism 5 and the knocking mechanism 6 stop moving at the center of the mixing barrel 23, the position of the mixing blade 28 is adjusted to ensure that there is no contact between the knocking mechanism 6 and the mixing blade 28. The second electric push rod 17 and the third electric push rod 18 are synchronously controlled to move downward, thereby driving the driving mechanism 5 and the knocking mechanism 6 to move downward. As the knocking mechanism 6 moves downward, the third motor 51 is started. The third motor 51 drives the driving shaft 52 and the first sprocket 53 to rotate. The first chain 55 drives the two second sprockets 54 to move synchronously, and drives the third bevel gear 571 and the fourth bevel gear 572 below the second sprocket 54 to rotate. The fourth bevel gear 572 drives the second synchronous wheel 58 to rotate, and drives the bearing rod 632 to rotate through the cooperation of the second synchronous belt 59 and the second synchronous wheel 58. When the bearing rod 632 rotates, the eccentric bearing 63 swings, and drives the lower sliding sleeve 652 and the small cylinder sleeve 65 to move linearly. At this time, the piston 653 quickly moves horizontally inside the small cylinder sleeve 65, the air pressure inside the small cylinder sleeve 65 changes, and compresses and pushes the piston 653 to impact the impact rod 66. After the impact rod 66 is impacted, it impacts the end of the impact shovel head 67. The impact shovel head 67 will perform a reciprocating impact motion, and with the help of the return spring 661, the impact rod 66 is quickly reset. As the telescopic end of the second electric push rod 17 continuously moves downward, the impact shovel head 67 impacts the inner wall of the mixing barrel 23, and the attachments adhering to the inner wall of the mixing barrel 23 are shaken off by means of the impact force. The knocking mechanism 6 is provided with multiple groups, and another group of knocking mechanisms 6 is driven to work through the third sprocket 74 and the second chain 75 to strengthen the impact on the inner wall of the mixing barrel 23. At the same time, the second electric push rod 17 and the third electric push rod 18 work synchronously. When the second electric push rod 17 moves downward, the third electric push rod 18 also moves downward. However, before using the equipment, the gap between the scraping plate 85 and the liquid extraction core pipe 26 needs to be adjusted so that the scraping plate 85 contacts the liquid extraction core pipe 26. When the driving end of the third motor 51 drives the driving shaft 52 to rotate, since the end of the extension rod 82 is fixedly connected to the outer wall of the driving shaft 52, the extension rod 82 drives the circular plate 81 to rotate, and the scraping plate 85 contacts the outer wall of the liquid extraction core pipe 26. As the scraping plate 85 rotates and contacts the liquid extraction core pipe 26, the hardened slurry adhering to the outer wall of the liquid extraction core pipe 26 is removed, improving the suction efficiency;

[0056] When cleaning the mixing barrel 23, the knocking mechanism 6 does not rotate, but the mixing barrel 23 needs to rotate. When the mixing barrel 23 rotates, the second motor 31 is started to drive the spline shaft 32 and the second spur gear 34 to rotate. The second spur gear 34 meshes with the toothed ring 24 to make the mixing barrel 23 rotate. Therefore, when cleaning the inner wall of the mixing barrel 23 through the knocking mechanism 6, it should be noted that when the mixing barrel 23 rotates, the mixing barrel 23 does not rotate 360 degrees, but the rotation angle each time does not exceed 90 degrees, showing a reciprocating state, and the rotation work is achieved by moving back and forth. The knocking mechanism 6 will not collide with the mixing blade 28, and it is necessary to ensure that the mixing blade 28 and the central plate 231 will not affect the knocking mechanism 6, ensuring that it is in a non-contact state with the knocking mechanism 6. Through the impact of the impact shovel head 67 on the mixing barrel 23, the attachments on the inner wall of the mixing barrel 23 are shaken off. Control the second electric push rod 17 and the third electric push rod 18 to drive the driving mechanism 5 and the knocking mechanism 6 to reset. Align the positioning holes 232 on the positioning plate 233 with the positioning holes 232 on the outer wall of the mixing barrel 23, then insert the positioning pin 234 into the positioning holes 232, and move the support seat 19 out of the U-shaped seat 11. Then control the telescopic end of the hydraulic push rod 41 to drive the clamping plate 42 and the limit sleeve 43 to descend. Under the pressure of the clamping plate 42, the second spur gear 34 no longer meshes with the toothed ring 24, and the upper chuck 44 at the lower end of the second spur gear 34 meshes with the lower chuck 45. At this time, the spline shaft 32 rotates and transmits the kinetic energy to the first bevel gear 331 and the second bevel gear 332 through the upper chuck 44 and the lower chuck 45, so that the second bevel gear 332 drives the fixed shaft 333 and the first spur gear 334 to rotate. Since the first spur gear 334 meshes and drives with the third spur gear 35, the third spur gear 35 drives the rotating rod 235 and the positioning plate 233 to rotate. With the help of the positioning pin 234, the rotation of the mixing barrel 23 is achieved. At this time, the mixing barrel 23 is inclined, and the inclination angle of the mixing barrel 23 needs to be controlled according to the distance between the second spur gear 34 and the toothed ring 24. Then the worker takes out the hard objects inside the mixing barrel 23 to avoid accumulation inside the mixing barrel 23.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A homogenizing device for spraying and reinforcing the inner wall of a tunnel, comprising a support mechanism (1) and a stirring barrel (23), characterized in that: The support mechanism (1) includes a U-shaped seat (11). One side of the U-shaped seat (11) is fixedly connected to a support frame (12). An homogenizing mechanism (2) for homogenizing materials is arranged at the inner top end of the U-shaped seat (11). An adjusting component (3) and a pressing mechanism (4) for controlling its operation are arranged on one side of the U-shaped seat (11) close to the homogenizing mechanism (2). Two slide rails (14) are symmetrically and fixedly connected to the upper part of the support frame (12). A fixed sliding sleeve (16) is sleeved on the two slide rails (14). Two groups of second electric push rods (17) and third electric push rods (18) are symmetrically and fixedly connected to the lower part of the fixed sliding sleeve (16). The telescopic ends of the two third electric push rods (18) are fixedly connected to a load-bearing plate (56). A plurality of knocking mechanisms (6) for impacting the attachments on the inner wall of the mixing barrel (23) are arranged below the load-bearing plate (56). A driving mechanism (5) for providing power to the knocking mechanism (6) is arranged above the load-bearing plate (56). A rotating mechanism (8) is arranged below the load-bearing plate (56). A protection mechanism (7) for protection and for supporting the connection between the two knocking mechanisms (6) is arranged outside the knocking mechanism (6). The rotating mechanism (8) includes a circular plate (81) rotatably sleeved on the lower part of the load-bearing plate (56). A support frame (83) is fixedly connected to the outer side wall of the circular plate (81). A limit bolt (84) is threadedly sleeved on the support frame (83). A scraper (85) is slidably connected to the inner bottom end of the support frame (83).

2. The homogenizing device for shotcrete reinforcement of tunnel inner wall according to claim 1, wherein: The support mechanism (1) further includes an arc-shaped plate (13) fixedly connected to the inner side wall of the support frame (12). One side of the arc-shaped plate (13) is fixedly connected to a first electric push rod (15). The telescopic end of the first electric push rod (15) is fixedly connected to the fixed sliding sleeve (16). A support seat (19) for supporting the mixing barrel (23) is arranged on the upper end surface of the U-shaped seat (11).

3. The homogenizing device for spraying mortar for reinforcing the inner wall of a tunnel according to claim 1, wherein: The homogenizing mechanism (2) includes a motor box (21) fixedly connected to the outer side wall of the stirring barrel (23). A first motor (22) is fixedly connected inside the motor box (21). A center plate (231) is fixedly connected to the upper end of the stirring barrel (23). An outer support frame (211) is fixedly connected to the inner side wall of the stirring barrel (23) below the center plate (231), and the outer support frame (211) penetrates to the outside of the stirring barrel (23) and communicates with the inside of the motor box (21). The inner bottom end of the stirring barrel (23) is connected by a bearing with a liquid extraction core tube (26) for pumping out the slurry, and the end of the liquid extraction core tube (26) extends above the center plate (231). A suction port (27) for the slurry to enter is provided in the lower part of the liquid extraction core tube (26). A stirring rod (25) is rotatably sleeved on the liquid extraction core tube (26), and the end of the stirring rod (25) extends into the inside of the outer support frame (211). A first synchronous pulley (221) is fixedly sleeved on the driving end of the first motor (22) and the extending end of the stirring rod (25) extending into the outer support frame (211). The two first synchronous pulleys (221) are connected by a first synchronous belt (222). Stirring blades (28) for stirring the slurry are symmetrically and fixedly connected to the stirring rod (25). A toothed ring (24) is fixedly connected to the outer circumferential wall of the stirring barrel (23). Positioning plates (233) are symmetrically installed on the outer wall of the stirring barrel (23). Positioning holes (232) for positioning are provided on both the stirring barrel (23) and the positioning plates (233). The positioning holes (232) on the positioning plates (233) and the positioning holes (232) on the stirring barrel (23) are inserted and matched by positioning pins (234). A rotating rod (235) is fixedly connected to the side of the positioning plate (233) away from the stirring barrel (23). The end of the rotating rod (235) is rotatably sleeved on the U-shaped seat (11), and one of the rotating rods (235) extends to the outer side wall of the U-shaped seat (11). A third straight gear (35) is fixedly connected to the extending end of the rotating rod (235) extending to the outer side wall of the U-shaped seat (11).

4. A tunnel inner wall shotcrete reinforcement homogenizing device according to claim 1, characterized in that: The adjusting assembly (3) includes a second motor (31) fixedly connected to the top of the inner side wall of the U-shaped seat (11). The output end of the second motor (31) is fixedly connected with a spline shaft (32). A second straight gear (34) meshing with the toothed ring (24) is slidably sleeved on the spline shaft (32). A first gear seat (33) is fixedly connected to the inner side wall of the U-shaped seat (11) below the second motor (31). A first bevel gear (331) is rotatably connected to the inner top end of the first gear seat (33). A second bevel gear (332) meshing with the first bevel gear (331) is rotatably connected to the inner side wall of the first gear seat (33). The second bevel gear (332) is rotatably installed on the U-shaped seat (11) through a fixed shaft (333). One end of the fixed shaft (333) away from the second bevel gear (332) penetrates the U-shaped seat (11) and is fixedly connected with a first straight gear (334). The first straight gear (334) meshes with the third straight gear (35).

5. A shotcreting and homogenizing device for tunnel inner wall reinforcement according to claim 4, characterized in that: The pressing mechanism (4) includes a hydraulic push rod (41) fixedly connected to the top of the inner side wall of the U-shaped seat (11). The telescopic end of the hydraulic push rod (41) faces downward and is fixedly connected with a clamping plate (42). A limit sleeve (43) is fixedly connected to the position of the central axis of the upper part of the second straight gear (34). The limit sleeve (43) is slidably sleeved on the spline shaft (32). The end of the clamping plate (42) is rotatably sleeved on the limit sleeve (43). An upper chuck (44) is coaxially and fixedly connected to the lower part of the second straight gear (34). A lower chuck (45) that meshes and drives with the upper chuck (44) is coaxially and fixedly connected to the upper part of the first bevel gear (331). The lower chuck (45) is located above the first gear seat (33).

6. The homogenizing device for shotcrete reinforcement of tunnel inner wall according to claim 1, characterized in that: The driving mechanism (5) includes a third motor (51) fixedly connected to the upper part of the load-bearing plate (56). The output end of the third motor (51) is fixedly connected with a driving shaft (52). A first sprocket (53) is sleeved on the driving shaft (52). Second sprockets (54) are symmetrically and rotatably connected to the upper part of the load-bearing plate (56). The two second sprockets (54) and the first sprocket (53) are connected by a first chain (55). A second gear seat (57) is fixedly connected to the bottom of the load-bearing plate (56). A fourth bevel gear (572) is rotatably connected to the side wall of the second gear seat (57). A third bevel gear (571) coaxial with the second sprocket (54) is rotatably connected to the second gear seat (57). The third bevel gear (571) meshes and drives with the fourth bevel gear (572). Extension plates (561) are fixedly connected to both ends of the bottom of the load-bearing plate (56).

7. A shotcrete homogenization device for tunnel inner wall reinforcement according to claim 6, characterized in that: The knocking mechanism (6) includes a housing main body (61). At the end of the housing main body (61), a shock shovel head (67) that impacts the inner wall of the stirring barrel (23) is snap - connected. At the upper part of the housing main body (61), a bearing bracket (62) is fixedly connected. And one end of the extension plate (561) away from the load - bearing plate (56) is fixedly sleeved with the end of the bearing rod (632) through a bearing. The bearing bracket (62) is sleeved with the bearing rod (632) through a bearing. An eccentric bearing (63) is fixedly connected to the bearing rod (632). A large cylinder sleeve (64) is fixedly connected to the inner wall of the housing main body (61). A shock rod (66) is slidably connected to the inner wall of the large cylinder sleeve (64). A return spring (661) for assisting the shock rod (66) to reset is fixedly connected to the inner wall of the housing main body (61). A small cylinder sleeve (65) is slidably connected to the inner wall of the large cylinder sleeve (64) on one side of the shock rod (66). A one - way intake valve (651) is arranged on the outer wall of the small cylinder sleeve (65). One end of the small cylinder sleeve (65) away from the shock shovel head (67) is fixedly connected to a sliding sleeve (652). A piston (653) that impacts the end of the shock rod (66) is slidably connected to the inner wall of the small cylinder sleeve (65). The outer wall of the eccentric bearing (63) is rotatably sleeved with a bearing sleeve (631). The end of the bearing sleeve (631) is slidably sleeved with the sliding sleeve (652). One end of the bearing rod (632) away from the eccentric bearing (63) and the fourth bevel gear (572) are coaxially and fixedly connected with a second synchronous pulley (58). The two second synchronous pulleys (58) are connected by a second synchronous belt (59). The second synchronous pulley (58) coaxially and fixedly connected with the fourth bevel gear (572) is located on the outer wall of the second gear seat (57).

8. A tunnel inner wall shotcrete reinforcement homogenizing device according to claim 7, characterized in that: The protection mechanism (7) includes a protection frame (71) fixedly connected to the outer walls of the two housing main bodies (61). A trapezoidal frame (72) is fixedly connected to the outer wall of the protection frame (71) located between the two housing main bodies (61). One end of the trapezoidal frame (72) away from the protection frame (71) is fixedly connected to a protective cover (73). The ends of the two bearing rods (632) are arranged inside the protective cover (73) through bearings. Third sprockets (74) are fixedly sleeved at the ends of the two bearing rods (632) extending to the inside of the protective cover (73). The two third sprockets (74) are connected by a second chain (75).

9. The homogenizing device for spraying and reinforcing the inner wall of a tunnel according to claim 6, characterized in that: A number of extension rods (82) are fixedly connected in an annular array on the inner ring wall of the circular plate (81). The end of the drive shaft (52) extends below the load - bearing plate (56). The end of the extension rod (82) is fixedly connected to the extended end of the drive shaft (52). The scraping plate (85) contacts the outer wall of the liquid - pumping core tube (26). The end of the limit bolt (84) is rotatably connected to the scraping plate (85).

10. A shotcrete reinforcement homogenization device for the inner wall of a tunnel according to claim 7, characterized in that: The small cylinder sleeve (65) and the sliding sleeve (652) penetrate through to the inside of the protective cover (73) at one end away from the shock rod (66). The telescopic end of the second electric push rod (17) is fixedly connected to a square steel (171). The end of the square steel (171) is fixedly connected to the upper part of the protection frame (71).

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