Tunnel inner wall contour line correcting and crushing device and crushing method

Abstract

The invention belongs to the technical field of tunnel inner wall construction, and particularly relates to a tunnel inner wall contour line correcting and crushing device and a crushing method.The tunnel inner wall contour line correcting and crushing device comprises an excavator, a driving seat is hinged to the driving end of the excavator, a driving shaft is rotationally connected to the top of the driving seat through a bearing, and a crushing adjusting mechanism is arranged on the arc surface of the driving shaft. According to the tunnel inner wall contour line correcting and crushing device and method, by arranging the crushing adjusting mechanism, the crushing contour line adjusting mechanism and the crushing and cutting mechanism, automatic cutting and crushing operation is achieved, the construction efficiency is greatly improved, and the operation time is shortened; due to automatic operation, the physical labor of workers is reduced, and the labor intensity is reduced; through the design of the adjusting mechanism, the crushing and cutting equipment can adapt to tunnel inner walls with different radians and shapes, and the adaptability of the device is enhanced; not only are the construction efficiency and quality improved, but also the labor intensity and the maintenance cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel inner wall construction, and in particular to a tunnel inner wall contour line correction and crushing device and a crushing method. Background Art

[0002] The excavation of the inner wall of a tunnel is a complex and labor-intensive process. Traditional manual operations and simple mechanized equipment can no longer meet the requirements of modern tunnel engineering for efficiency, safety, and environmental protection. Especially when dealing with rocky environments with high hardness, traditional equipment such as vibrating breakers can easily cause large pieces to fall off as a whole during the crushing process, resulting in excessive excavation size and the need for subsequent filling and trimming, which not only wastes materials but also increases the construction cycle and cost. And when it is necessary to accurately adjust the contour line size of the tunnel inner wall, the traditional operation method requires manual operation and trimming, which is labor-intensive, inefficient, and cannot guarantee accuracy. In addition, the shape of the tunnel inner wall is complex and changeable, and traditional equipment is difficult to adapt to tunnel inner walls of different curvatures and shapes, resulting in unstable construction quality. Therefore, a tunnel inner wall contour correction crushing device and crushing method are needed. Summary of the invention

[0003] Based on the existing technical problems, the present invention proposes a tunnel inner wall contour line correction crushing device and a crushing method.

[0004] The present invention proposes a tunnel inner wall contour line correction and crushing device, comprising an excavator, a driving end of the excavator is hingedly provided with a driving seat, the top of the driving seat is rotatably connected to a driving shaft through a bearing, the arc surface of the driving shaft is provided with a crushing adjustment mechanism, and the top of the driving shaft is respectively provided with a crushing contour line adjustment mechanism and a crushing cutting mechanism.

[0005] The crushing contour adjustment mechanism realizes the automatic fitting adjustment of the crushing and cutting mechanism according to the arc shape of the inner wall of the tunnel.

[0006] The crushing and cutting mechanism realizes the action of cutting the contour line of the inner wall of the tunnel according to the crushing size. The multiple crushing and cutting mechanisms are arranged in an arc shape above the crushing contour line adjustment mechanism, and the arc trajectory of cutting and crushing is adjusted by the crushing contour line adjustment mechanism to drive the crushing and cutting mechanism to realize the action of cutting the contour line of the inner wall of the tunnel.

[0007] The crushing adjustment mechanism realizes the action of crushing after cutting by the crushing cutting mechanism.

[0008] Preferably, the crushing adjustment mechanism includes a large bevel tooth, the middle inner wall of the large bevel tooth is rotatably connected to the arc surface of the driving shaft through a bearing, and a connecting crushing rod is fixedly installed on the top of the large bevel tooth, and a vibrating crushing hammer is installed on the top surface of the connecting crushing rod.

[0009] Preferably, an L-shaped connecting plate is fixedly installed on the top side surface of the driving seat, a rotating motor is fixedly installed on the surface of the L-shaped connecting plate, a rotating shaft is fixedly installed on the output end of the rotating motor through a coupling, a small bevel gear is fixedly installed on one end of the rotating shaft, and the tooth groove of the small bevel gear is meshed with the gear teeth of the large bevel gear.

[0010] Preferably, the crushing contour adjustment mechanism includes a cross bar installed on the top of the drive shaft, and the top of the cross bar is respectively fixed with a front slide rail, a rear slide rail and a hydraulic cylinder, the front slide rail is arranged in parallel with the rear slide rail, and the hydraulic cylinder is located at one end of the rear slide rail.

[0011] Preferably, a push rod is fixedly installed on the telescopic end of the hydraulic cylinder, and the surface of the push rod is slidably inserted into the inner wall of the rear slide rail. Arc-shaped connecting rods are fixedly installed on both ends of the top of the push rod. The surface of the arc-shaped connecting rod is provided with a hinge joint, and a plurality of the hinge joints are distributed in a curved array on the surface of the arc-shaped connecting rod. A transfer hole is opened on the surface of the hinge joint, and a plurality of the transfer holes are movably connected to the surface of the arc-shaped connecting rod. The inner top wall and the inner bottom wall of the transfer hole are rotatably connected with a pin shaft through a bearing, and the middle arc surface of the pin shaft is fixedly installed on the surface of the arc-shaped connecting rod.

[0012] Preferably, an adjusting swing tube is fixedly installed at one end of each of the hinged joints, and the multiple adjusting swing tubes are distributed in a curved array. A spring is fixedly installed on the inner bottom wall of the adjusting swing tube, and a telescopic rod is fixedly installed on the top of the spring. The arc surface of the telescopic rod is slidably connected to the inner wall of the top end of the adjusting swing tube.

[0013] Preferably, a U-shaped seat is fixedly installed at one end of the cross bar, and the inner walls at both ends of the U-shaped seat are rotatably connected to a transfer shaft through bearings, and a hinge rod is fixedly installed on the middle arc surface of the transfer shaft. The multiple hinge rods are connected end to end and are rotatably connected by pins to form a long strip shape. The hinge rod at the tail end of the long strip is also rotatably connected to a sliding block through a pin. The surface of the sliding block is slidably inserted into the inner wall of the front slide rail, and the sliding block slides with the front slide rail to cooperate with each other, so that the multiple hinge rods in the long strip are arranged in an arc shape.

[0014] Preferably, a fixed shaft is fixedly mounted on the bottom arc surface of the plurality of hinged rods, the arc surface of the fixed shaft is rotatably connected to a sleeve via a bearing, and the inner wall of the sleeve is slidably plugged into the arc surface of the telescopic rod.

[0015] Preferably, the crushing and cutting mechanism includes a support plate installed on the arc surface of the hinged rod, a protective plate is fixedly installed on one side of the top of the support plate, the top relative surfaces of the two protective plates are rotatably connected to the cutting and crushing shafts through bearings, a cutting blade is fixedly installed on the middle arc surface of the cutting and crushing shaft, a first sprocket is fixedly installed on one end of the cutting and crushing shaft, a cutting motor is fixedly installed on the other end of the top of the support plate, and the output end of the cutting motor is fixedly installed with a second sprocket through a coupling, and the groove of the second sprocket and the groove of the first sprocket are both transmission-connected with a chain.

[0016] The present invention proposes a crushing method of a tunnel inner wall contour line correction crushing device, which comprises the following steps: step 1, after a period of tunnel excavation, first planning the size of the tunnel inner wall to be excavated on the inner wall surface of the tunnel, and controlling the excavator to travel to the lower part of the tunnel inner wall according to the final excavated tunnel inner wall size, first using the excavator to control the movement of the crushing and cutting mechanism, and controlling the cutting blade to contact with the inner wall of the tunnel.

[0017] Step 2: While controlling the movement of the crushing and cutting mechanism, the telescopic movement of the hydraulic cylinder is controlled at the same time to drive the push rod to slide, thereby adjusting the size of the arc trajectory formed by the multiple articulated rods. During the sliding of the push rod, the sliding blocks at one end of the multiple articulated rods are controlled to slide by adjusting the swing tube and the telescopic rod to increase or decrease the arc trajectory formed by them, thereby controlling the multiple crushing and cutting mechanisms to adjust and cut according to the arc size of the tunnel.

[0018] Step three, when the cutting blade of the crushing and cutting mechanism is in contact with the inner wall of the tunnel, start the cutting motor to drive the cutting blade to rotate at high speed for rotary cutting operation. When the cutting blade reaches the designed cutting size during rotary cutting, the cutting is completed and the crushing and cutting mechanism is controlled again to continue cutting beside the cutting position, thereby controlling the inner wall of the tunnel to be cut into multiple small edge blocks.

[0019] Step 4: After the cutting is completed, start the rotating motor to switch the positions of the crushing and cutting mechanism and the vibrating hammer, drive the vibrating hammer to break the small edge blocks, control the edge blocks to fall, and perform arc-shaped cutting and crushing operations on the inner wall of the tunnel.

[0020] The beneficial effects of the present invention are:

[0021] By setting up a crushing adjustment mechanism, a crushing contour adjustment mechanism and a crushing cutting mechanism, automated cutting and crushing operations are achieved, which greatly improves construction efficiency and reduces operation time; precise cutting and crushing operations ensure the correction quality of the tunnel inner wall contour, reduce errors and rework; automated operations reduce workers' physical labor and reduce labor intensity; the design of the adjustment mechanism enables the crushing and cutting equipment to adapt to tunnel inner walls of different curvatures and shapes, enhancing the adaptability of the device; it not only improves construction efficiency and quality, but also reduces labor intensity and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a tunnel inner wall contour correction crushing device and crushing method;

[0023] Figure 2 A three-dimensional diagram of a crushing adjustment mechanism of a tunnel inner wall contour correction crushing device and a crushing method;

[0024] Figure 3 A three-dimensional diagram of a crushing and cutting mechanism of a tunnel inner wall contour correction crushing device and a crushing method;

[0025] Figure 4 A three-dimensional diagram of a crushing contour adjustment mechanism of a tunnel inner wall contour correction crushing device and a crushing method;

[0026] Figure 5 A three-dimensional diagram of an arc-shaped connecting rod structure of a tunnel inner wall contour correction and crushing device and a crushing method;

[0027] Figure 6 A three-dimensional diagram of an adjustable swing pipe structure of a tunnel inner wall contour correction crushing device and a crushing method;

[0028] Figure 7 A tunnel inner wall contour correction crushing device and crushing method Figure 3 A magnified view of the structure at center;

[0029] Figure 8 A tunnel inner wall contour correction crushing device and crushing method Figure 3 A magnified view of the structure at B in the middle;

[0030] Fig. 9 A tunnel inner wall contour correction crushing device and crushing method Figure 2 Enlarged view of the structure at point C in the middle.

[0031] In the figure: 1. excavator; 2. drive seat; 3. drive shaft; 4. crushing adjustment mechanism; 41. large bevel gear; 42. connecting breaker rod; 43. vibrating breaker hammer; 44. L-shaped connecting plate; 45. rotating motor; 46. rotating shaft; 47. small bevel gear; 5. crushing contour adjustment mechanism; 51. cross bar; 52. front slide rail; 53. rear slide rail; 54. hydraulic cylinder; 55. push rod; 56. arc connecting rod; 57. hinge joint; 58 , transfer hole; 59, pin shaft; 510, adjusting swing tube; 511, spring; 512, telescopic rod; 513, U-shaped seat; 514, transfer shaft; 515, hinged rod; 516, sliding block; 517, fixed shaft; 518, bushing; 6, crushing and cutting mechanism; 61, support plate; 62, protective plate; 63, cutting and crushing shaft; 64, cutting blade; 65, first sprocket; 66, cutting motor; 67, second sprocket; 68, chain. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Embodiment 1

[0034] Reference Figure 1-Figure 9 A tunnel inner wall contour line correction and crushing device comprises an excavator 1, a driving end of the excavator 1 is hingedly provided with a driving seat 2, the top of the driving seat 2 is rotatably connected with a driving shaft 3 through a bearing, a crushing adjustment mechanism 4 is provided on the arc surface of the driving shaft 3, and a crushing contour line adjustment mechanism 5 and a crushing cutting mechanism 6 are respectively provided on the top of the driving shaft 3.

[0035] In order to realize the crushing action after cutting by the crushing and cutting mechanism 6, a crushing adjustment mechanism 4 is provided, including a large bevel tooth 41. The middle inner wall of the large bevel tooth 41 is rotatably connected to the arc surface of the driving shaft 3 through a bearing. A connecting crushing rod 42 is also fixedly installed on the top of the large bevel tooth 41, and a vibrating crushing hammer 43 is installed on the top surface of the connecting crushing rod 42.

[0036] Specifically implemented in this way, the introduction of the vibrating breaker 43 can effectively crush the rock after cutting, further improving the working efficiency; the mechanized crushing operation replaces the traditional manual hammering, significantly reducing the labor intensity of the workers; the precise crushing adjustment and the use of the vibrating breaker 43 can ensure the contour correction quality of the inner wall of the tunnel and reduce the subsequent finishing work.

[0037] An L-shaped connecting plate 44 is also fixedly installed on the top side surface of the driving seat 2, and a rotating motor 45 is fixedly installed on the surface of the L-shaped connecting plate 44. A rotating shaft 46 is fixedly installed on the output end of the rotating motor 45 through a coupling, and a small bevel gear 47 is fixedly installed on one end of the rotating shaft 46. The tooth groove of the small bevel gear 47 meshes with the gear teeth of the large bevel gear 41.

[0038] Specifically, by rotating the motor 45 to drive the small bevel gear 47, the position of the large bevel gear 41 can be accurately adjusted, thereby achieving accurate correction of the contour line of the inner wall of the tunnel.

[0039] In order to realize the automatic fitting and adjustment of the crushing and cutting mechanism 6 according to the arc shape of the inner wall of the tunnel, a crushing contour adjustment mechanism 5 is provided, including a cross bar 51 installed on the top of the driving shaft 3, and a front slide rail 52, a rear slide rail 53 and a hydraulic cylinder 54 are fixedly installed on the top of the cross bar 51, respectively. The front slide rail 52 is arranged in parallel with the rear slide rail 53, and the hydraulic cylinder 54 is located at one end of the rear slide rail 53.

[0040] Specifically implemented in this way, the automatic fitting adjustment function greatly improves the operating efficiency of the crushing and cutting mechanism 6 and reduces the operating time; through precise adjustment, it can ensure that the contour line correction of the inner wall of the tunnel meets the design requirements and improves the construction quality; the design of the adjustment mechanism enables the crushing and cutting mechanism 6 to adapt to the inner walls of tunnels with different curvatures and shapes, thereby enhancing the adaptability of the device.

[0041] A push rod 55 is fixedly installed at the telescopic end of the hydraulic cylinder 54, and the surface of the push rod 55 is slidably inserted into the inner wall of the rear slide rail 53. Arc-shaped connecting rods 56 are fixedly installed at both ends of the top of the push rod 55. A hinge head 57 is provided on the surface of the arc-shaped connecting rod 56. Multiple hinge heads 57 are distributed in a curved array on the surface of the arc-shaped connecting rod 56. A transfer hole 58 is opened on the surface of the hinge head 57. Multiple transfer holes 58 are movably connected to the surface of the arc-shaped connecting rod 56. The inner top wall and the inner bottom wall of the transfer hole 58 are rotatably connected to a pin shaft 59 through a bearing. The middle arc surface of the pin shaft 59 is fixedly installed on the surface of the arc-shaped connecting rod 56.

[0042] Specifically, by pushing the push rod 55 through the hydraulic cylinder 54, combined with the rotational connection between the hinge joint 57 and the pin 59, the position of the crushing and cutting mechanism 6 can be accurately adjusted; the curved array distribution and movable sleeve design of the hinge joint 57 enable the crushing and cutting mechanism 6 to better adapt to the inner walls of tunnels with different curvatures and shapes.

[0043] An adjusting swing tube 510 is fixedly installed at one end of each hinged head 57, and the multiple adjusting swing tubes 510 are distributed in a curved array. A spring 511 is fixedly installed on the inner bottom wall of the adjusting swing tube 510, and a telescopic rod 512 is fixedly installed on the top of the spring 511. The arc surface of the telescopic rod 512 is slidably plugged into the inner wall of the top of the adjusting swing tube 510.

[0044] Specifically implemented in this way, the introduction of the spring 511 can play a buffering role, reduce the vibration during the crushing process, and protect the equipment and tunnel structure; during cutting, multiple telescopic rods 512 are in contact with the inner wall of the tunnel. When approaching, the telescopic rods 512 are controlled to squeeze the spring 511 to compress, thereby assisting in adjusting the inner wall of the arc tunnel.

[0045] A U-shaped seat 513 is fixedly installed at one end of the cross bar 51, and the inner walls at both ends of the U-shaped seat 513 are rotatably connected to the transfer shaft 514 through bearings. A hinged rod 515 is fixedly installed on the middle arc surface of the transfer shaft 514. The multiple hinged rods 515 are connected end to end and are rotatably connected through a pin 59 to form a long strip. The hinged rod 515 at the tail end of the long strip is also rotatably connected to a sliding block 516 through the pin 59. The surface of the sliding block 516 is slidably inserted into the inner wall of the front slide rail 52, and the sliding block 516 slides with the front slide rail 52 through the sliding block 516, so that the multiple hinged rods 515 in the long strip are arranged in an arc shape.

[0046] Specifically implemented in this way, the arc-shaped placement of the articulated rod 515 can be quickly adjusted by moving the sliding block 516, thereby improving construction efficiency; the articulated rod 515 is connected end to end to form a long strip, and through the sliding cooperation between the sliding block 516 and the front slide rail 52, the arc-shaped placement of the long articulated rod 515 can be achieved to adapt to tunnel inner walls with different curvatures; precise arc-shaped adjustment ensures the quality of contour line correction of the tunnel inner wall, reducing errors and rework.

[0047] A fixed shaft 517 is also fixedly installed on the arc surface of the bottom end of the plurality of hinged rods 515 , and a shaft sleeve 518 is rotatably connected to the arc surface of the fixed shaft 517 via a bearing, and the inner wall of the shaft sleeve 518 is slidably plugged into the arc surface of the telescopic rod 512 .

[0048] Specifically implemented in this way, the rotational connection between the fixed shaft 517 and the bearing, and the sliding connection between the sleeve 518 and the telescopic rod 512 enhance the stability and rigidity of the entire adjustment system; the sliding connection between the inner wall of the sleeve 518 and the arc surface of the telescopic rod 512 allows precise position adjustment, ensuring that the crushing and cutting mechanism 6 can accurately fit the inner wall of the tunnel.

[0049] In order to realize the action of cutting the contour line of the inner wall of the tunnel according to the crushing size, a plurality of crushing and cutting mechanisms 6 are arranged in an arc shape above the crushing contour line adjusting mechanism 5, and the arc trajectory of cutting and crushing is adjusted by the crushing contour line adjusting mechanism 5 to drive the crushing and cutting mechanism 6 to realize the action of cutting the contour line of the inner wall of the tunnel. The crushing and cutting mechanism 6 includes a support plate 61 installed on the arc surface of the hinged rod 515, a protective plate 62 is fixedly installed on one side of the top of the support plate 61, and the top relative surfaces of the two protective plates 62 are rotatably connected to the cutting and crushing shaft 63 through bearings, and a cutting blade 64 is fixedly installed on the middle arc surface of the cutting and crushing shaft 63, and a first sprocket 65 is fixedly installed on one end of the cutting and crushing shaft 63, and a cutting motor 66 is fixedly installed on the other end of the top of the support plate 61, and a second sprocket 67 is fixedly installed on the output end of the cutting motor 66 through a coupling, and the groove of the second sprocket 67 and the groove of the first sprocket 65 are both transmission-connected with a chain 68.

[0050] Specifically implemented in this way, the arc-shaped crushing and cutting mechanism 6 can efficiently cut along the arc of the inner wall of the tunnel, reducing repeated operations and waste; the compact design of the crushing and cutting mechanism 6 saves space and is convenient for use in narrow spaces such as tunnels; the precise cutting path and size ensure the correction quality of the inner wall contour of the tunnel and reduce errors; through the automatic control of the adjustment mechanism and the drive of the cutting motor 66, the precise cutting of the inner wall contour of the tunnel is achieved, which not only improves the construction efficiency and quality, but also reduces labor intensity and maintenance costs.

[0051] By setting up the crushing adjustment mechanism 4, the crushing contour adjustment mechanism 5 and the crushing cutting mechanism 6, automated cutting and crushing operations are achieved, which greatly improves the construction efficiency and reduces the working time; the precise cutting and crushing operations ensure the correction quality of the tunnel inner wall contour, reduce errors and rework; the automated operation reduces the physical labor of the workers and reduces the labor intensity; the design of the adjustment mechanism enables the crushing and cutting equipment to adapt to the inner walls of tunnels with different curvatures and shapes, enhancing the adaptability of the device; it not only improves the construction efficiency and quality, but also reduces the labor intensity and maintenance costs.

[0052] Embodiment 2

[0053] Reference Figure 1-Figure 9 A method for crushing a tunnel inner wall contour correction crushing device, step 1, after a period of tunnel excavation, first plan the size of the tunnel inner wall to be excavated on the inner wall surface of the tunnel, and according to the final excavated tunnel inner wall size, control the excavator 1 to travel to the lower part of the tunnel inner wall, first use the excavator 1 to control the crushing and cutting mechanism 6 to move, and control the cutting blade 64 to contact the inner wall of the tunnel;

[0054] Step 2: While controlling the movement of the crushing and cutting mechanism 6, the hydraulic cylinder 54 is controlled to move telescopically, driving the push rod 55 to slide, thereby adjusting the size of the arc track formed by the multiple articulated rods 515. During the sliding of the push rod 55, the sliding block 516 at one end of the multiple articulated rods 515 is controlled to slide by adjusting the sliding of the swing tube 510 and the telescopic rod 512, so that the arc track formed by them can be increased or decreased, thereby controlling the multiple crushing and cutting mechanisms 6 to adjust and cut according to the arc size of the tunnel;

[0055] Step 3: When the cutting blade 64 of the crushing and cutting mechanism 6 is in contact with the inner wall of the tunnel, the cutting motor 66 is started to drive the cutting blade 64 to rotate at high speed for rotary cutting. When the cutting blade 64 reaches the designed cutting size during rotary cutting, the cutting is finished and the crushing and cutting mechanism 6 is controlled again to continue cutting beside the cutting position, thereby controlling the inner wall of the tunnel to be cut into a plurality of small edge blocks.

[0056] Step 4: After the cutting is completed, the rotating motor 45 is started to work, the crushing and cutting mechanism 6 and the vibrating hammer 43 are switched, and the vibrating hammer 43 is driven to work to crush the small edge blocks, and the edge blocks are controlled to fall, so as to perform the arc-shaped cutting and crushing operation on the inner wall of the tunnel.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tunnel inner wall contour correction and crushing device, comprising an excavator (1), characterized in that: The driving end of the excavator (1) is hingedly provided with a driving seat (2), the top of the driving seat (2) is rotatably connected to a driving shaft (3) via a bearing, the arc surface of the driving shaft (3) is provided with a crushing adjustment mechanism (4), and the top of the driving shaft (3) is respectively provided with a crushing contour adjustment mechanism (5) and a crushing cutting mechanism (6); The crushing contour adjustment mechanism (5) enables the crushing and cutting mechanism (6) to automatically adjust according to the arc shape of the inner wall of the tunnel; The crushing and cutting mechanism (6) is used to cut the contour line of the inner wall of the tunnel according to the crushing size. A plurality of the crushing and cutting mechanisms (6) are arranged in an arc shape above the crushing contour line adjustment mechanism (5). The crushing contour line adjustment mechanism (5) is used to adjust the arc trajectory of the cutting and crushing, and the crushing and cutting mechanism (6) is driven to cut the contour line of the inner wall of the tunnel. The crushing adjustment mechanism (4) realizes the crushing action after cutting by the crushing cutting mechanism (6).

2. The tunnel inner wall contour correction and crushing device according to claim 1, characterized in that: The crushing adjustment mechanism (4) comprises a large bevel tooth (41), the inner wall of the middle part of the large bevel tooth (41) is rotatably connected to the arc surface of the driving shaft (3) through a bearing, and a connecting crushing rod (42) is fixedly installed on the top of the large bevel tooth (41), and a vibrating crushing hammer (43) is installed on the top surface of the connecting crushing rod (42).

3. The tunnel inner wall contour correction and crushing device according to claim 2, characterized in that: An L-shaped connecting plate (44) is also fixedly mounted on one side surface of the top of the driving seat (2); a rotating motor (45) is fixedly mounted on the surface of the L-shaped connecting plate (44); a rotating shaft (46) is fixedly mounted on the output end of the rotating motor (45) via a coupling; a small bevel gear (47) is fixedly mounted on one end of the rotating shaft (46); a tooth groove of the small bevel gear (47) meshes with the gear teeth of the large bevel gear (41).

4. The tunnel inner wall contour correction and crushing device according to claim 1, characterized in that: The crushing profile adjustment mechanism (5) comprises a cross bar (51) mounted on the top of the driving shaft (3), a front slide rail (52), a rear slide rail (53) and a hydraulic cylinder (54) are respectively fixedly mounted on the top of the cross bar (51), the front slide rail (52) and the rear slide rail (53) are arranged in parallel, and the hydraulic cylinder (54) is located at one end of the rear slide rail (53).

5. The tunnel inner wall contour correction and crushing device according to claim 4, characterized in that: A push rod (55) is fixedly installed at the telescopic end of the hydraulic cylinder (54), and the surface of the push rod (55) is slidably plugged with the inner wall of the rear slide rail (53). An arc-shaped connecting rod (56) is fixedly installed at both ends of the top of the push rod (55). A hinge joint (57) is provided on the surface of the arc-shaped connecting rod (56). A plurality of hinge joints (57) are distributed in a curved array on the surface of the arc-shaped connecting rod (56). A transfer hole (58) is opened on the surface of the hinge joint (57). A plurality of transfer holes (58) are movably sleeved with the surface of the arc-shaped connecting rod (56). The inner top wall and the inner bottom wall of the transfer hole (58) are rotatably connected with a pin shaft (59) through a bearing, and the middle arc surface of the pin shaft (59) is fixedly installed with the surface of the arc-shaped connecting rod (56).

6. The tunnel inner wall contour correction and crushing device according to claim 5, characterized in that: An adjusting swing tube (510) is fixedly mounted on one end of each hinged joint (57), and the plurality of adjusting swing tubes (510) are distributed in a curved array. A spring (511) is fixedly mounted on the inner bottom wall of the adjusting swing tube (510), and a telescopic rod (512) is fixedly mounted on the top end of the spring (511). The arc surface of the telescopic rod (512) is slidably plugged into the inner wall of the top end of the adjusting swing tube (510).

7. A tunnel inner wall contour correction and crushing device and crushing method according to claim 6, characterized in that: A U-shaped seat (513) is fixedly installed at one end of the cross bar (51), and the inner walls at both ends of the U-shaped seat (513) are rotatably connected to a transfer shaft (514) through bearings. A hinge rod (515) is fixedly installed on the arc surface in the middle of the transfer shaft (514). A plurality of hinge rods (515) are connected end to end and are rotatably connected through a pin shaft (59) to form a long strip. The hinge rod (515) at the tail end of the long strip is also rotatably connected to a sliding block (516) through a pin shaft (59). The surface of the sliding block (516) is slidably plugged into the inner wall of the front slide rail (52). The sliding block (516) is slidably matched with the front slide rail (52) so that the plurality of hinge rods (515) in the long strip are arranged in an arc shape.

8. A tunnel inner wall contour correction and crushing device and crushing method according to claim 7, characterized in that: A fixed shaft (517) is also fixedly mounted on the arc surface of the bottom ends of the plurality of hinged rods (515); the arc surface of the fixed shaft (517) is rotatably connected to a shaft sleeve (518) via a bearing; the inner wall of the shaft sleeve (518) is slidably plugged into the arc surface of the telescopic rod (512).

9. A tunnel inner wall contour correction and crushing device and crushing method according to claim 7, characterized in that: The crushing and cutting mechanism (6) comprises a support plate (61) mounted on the arc surface of the hinge rod (515), a protective plate (62) is fixedly mounted on one side of the top end of the support plate (61), the top opposite surfaces of the two protective plates (62) are rotatably connected to a cutting and crushing shaft (63) through bearings, a cutting blade (64) is fixedly mounted on the middle arc surface of the cutting and crushing shaft (63), a first sprocket (65) is fixedly mounted on one end of the cutting and crushing shaft (63), a cutting motor (66) is fixedly mounted on the other end of the top of the support plate (61), a second sprocket (67) is fixedly mounted on the output end of the cutting motor (66) through a coupling, and the groove of the second sprocket (67) and the groove of the first sprocket (65) are both transmission-connected with a chain (68).

10. A crushing method according to any one of claims 1 to 9, characterized in that: Step 1: After the tunnel is excavated for a period of time, the size of the inner wall of the tunnel to be excavated is first planned on the inner wall surface of the tunnel, and according to the final size of the inner wall of the tunnel to be excavated, the excavator (1) is controlled to move to the lower part of the inner wall of the tunnel, and the excavator (1) is first used to control the movement of the crushing and cutting mechanism (6) to control the cutting blade (64) to contact the inner wall of the tunnel; Step 2: While controlling the movement of the crushing and cutting mechanism (6), the hydraulic cylinder (54) is controlled to move telescopically, driving the push rod (55) to slide, thereby adjusting the size of the arc track formed by the multiple articulated rods (515). While the push rod (55) slides, the sliding block (516) at one end of the multiple articulated rods (515) is controlled to slide by adjusting the swing tube (510) and the telescopic rod (512), so that the arc track formed by the multiple articulated rods (515) can be increased or decreased, thereby controlling the multiple crushing and cutting mechanisms (6) to adjust and cut according to the arc size of the tunnel; Step 3: When the cutting blade (64) of the crushing and cutting mechanism (6) is in contact with the inner wall of the tunnel, the cutting motor (66) is started to drive the cutting blade (64) to rotate at high speed to perform a rotary cutting operation. When the cutting blade (64) reaches the designed cutting size during rotary cutting, the cutting is completed and the crushing and cutting mechanism (6) is controlled again to continue cutting beside the cutting position, thereby controlling the inner wall of the tunnel to be cut into a plurality of small edge blocks. Step 4: After the cutting is completed, the rotating motor (45) is started to work, the crushing and cutting mechanism (6) and the vibrating crushing hammer (43) are switched, and the vibrating crushing hammer (43) is driven to work to crush the small edge blocks, and the edge blocks are controlled to fall, so that the inner wall of the tunnel is cut and crushed in an arc shape.

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