Circular tunnel borer

Abstract

The utility model relates to a kind of circular tunnel gouging machine, belong to concrete construction technical field.It includes body and walking mechanism installed in the bottom of body, the front end of body is equipped with slewing bearing lifting adjusting mechanism by first cross beam frame, the execution end of slewing bearing lifting adjusting mechanism is equipped with second cross beam frame, it is connected between the second cross beam frame and third cross beam frame by slewing bearing, the other end of third cross beam frame is equipped with telescopic working head adjusting mechanism, the execution end of telescopic working head adjusting mechanism is equipped with gouging machine head mounting rack, gouging machine head mounting rack is equipped with gouging machine head.This utility model has the following beneficial effects: the design of telescopic working head adjusting mechanism can accurately fit the inner wall of different diameter circular tunnel, without disassembly adjustment, realize the accurate, uniform gouging of the inner wall of different diameter circular tunnel, improve operation efficiency and quality, reduce labor intensity, guarantee operation safety, adapt to diversification tunnel construction scene.

Description

Technical Field

[0001] This utility model relates to a circular tunnel roughening machine, belonging to the field of concrete construction technology. Background Technology

[0002] In the construction of circular tunnels, the bonding strength between the secondary lining and the initial support directly affects the stability of the tunnel structure. Roughening the surface is a crucial step in improving the roughness of this bonding layer. However, existing technologies have the following drawbacks: 1. Poor versatility: Traditional shaving machines are mostly designed to fit flat or curved surfaces, which cannot accurately conform to the inner wall of a circular tunnel. This results in poor shaving uniformity and makes it easy to miss or over-shave in certain areas. 2. Low efficiency: When using manual handheld chiseling equipment, the labor intensity is high and the working radius is limited. Mechanical transmission chiseling machines require multiple adjustments to the machine position and are cumbersome to disassemble when adapting to different tunnel diameters. 3. Insufficient safety: The space inside the tunnel is small, the field of vision of the existing equipment is limited, and mechanical collisions or personnel safety accidents are likely to occur. In addition, the dust generated by roughening is diffused in no direction, polluting the working environment. 4. Poor precision controllability: The roughening depth and density cannot be precisely adjusted, making it difficult to meet the roughening process requirements of concrete of different strength grades, which affects the construction quality of subsequent processes.

[0003] To solve one of the above problems, there is an urgent need for a circular tunnel roughening machine. Utility Model Content

[0004] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to realize the use of a slewing bearing to drive the chisel head to rotate around the center line of the slewing bearing, and the chisel head to rotate around the inner wall of the circular tunnel once under the drive of the slewing bearing, so as to continuously chisel the inner wall of the circular tunnel. To this end, a circular tunnel chisel machine is provided.

[0005] The circular tunnel shaving machine of this utility model includes a machine body and a traveling mechanism installed at the bottom of the machine body. Its features include: a third crossbeam frame; a slewing bearing lifting and adjusting mechanism is installed at the front end of the machine body via a first crossbeam frame; a second crossbeam frame is installed at the end of the slewing bearing lifting and adjusting mechanism; the second and third crossbeam frames are connected by a slewing bearing; a telescopic working head adjusting mechanism is installed at the other end of the third crossbeam frame; a shaving head mounting frame is installed at the end of the telescopic working head adjusting mechanism; and a shaving head is mounted on the shaving head mounting frame.

[0006] After the circular tunnel roughening machine enters the circular tunnel, the position of the slewing bearing is adjusted by the lifting and adjusting mechanism of the slewing bearing so that the center line of the slewing bearing coincides with the center of the circular tunnel. After the roughening head is started, the telescopic working head adjusting mechanism drives the roughening head to fit against the inner wall of the circular tunnel. At the same time, the slewing bearing is started, which can drive the roughening head to rotate around the center line of the slewing bearing. Under the drive of the slewing bearing, the roughening head rotates around the inner wall of the circular tunnel once, so that the inner wall of the circular tunnel can be continuously roughened.

[0007] The telescopic working head adjustment mechanism is designed to precisely fit the inner wall of circular tunnels of different diameters without disassembly or adjustment. This enables precise and uniform roughening of the inner wall of circular tunnels of different diameters, improving work efficiency and quality, reducing labor intensity, ensuring work safety, and adapting to diverse tunnel construction scenarios.

[0008] Combined with the walking mechanism, after a single section of work is completed, the equipment moves along the axis to the next section and repeats the work until the entire tunnel is roughened, achieving continuous roughening of the tunnel inner wall, which improves work efficiency several times over compared to manual work.

[0009] It is suitable for roughening the concrete surface of circular tunnel lining in highway, railway and water conservancy projects, providing a rough bonding surface for subsequent lining reinforcement, waterproofing and other processes.

[0010] In any of the above embodiments, it is preferred that the telescopic working head adjustment mechanism includes a telescopic arm A, a telescopic drive cylinder A, and a telescopic boom cylinder A fixedly connected to the third crossbeam frame. One end of the telescopic arm A is inserted into the telescopic boom cylinder A and extends and retracts in cooperation with the telescopic boom cylinder A. The cylinder body of the telescopic drive cylinder A is hinged to the hinge seat A on the telescopic arm A, and the telescopic end of the telescopic drive cylinder A is hinged to the hinge seat B on the telescopic boom cylinder A. The telescopic drive cylinder A drives the telescopic boom cylinder A and the telescopic arm A to extend and retract relative to each other, driving the chiseling head 7 to fit against the inner wall of the circular tunnel.

[0011] In any of the above embodiments, it is preferred that the chisel head mounting bracket is hinged to the top of the telescopic arm A via a hinge seat C. A driver A is also provided between the chisel head mounting bracket and the telescopic arm A, capable of changing the rotation angle of the chisel head mounting bracket. The driver A changes the angle between the chisel head mounting bracket and the telescopic arm A. The driver A allows for fine-tuning of the tilt angle of the chisel head mounting bracket, ensuring the precise fit between the chisel assembly and the inner wall of the circular tunnel.

[0012] In any of the above embodiments, it is preferred that the actuator A is an angle-adjusting cylinder A, the cylinder body of which is hinged to the hinge seat E on the chisel head mounting frame, and the telescopic end of which is hinged to the hinge seat D on the telescopic arm A. By controlling the telescopic extension of the angle-adjusting cylinder A, the tilt angle of the chisel head mounting frame can be finely adjusted.

[0013] In any of the above embodiments, it is preferred that a reinforcing rib is provided between the third crossbeam frame and the telescopic boom cylinder A.

[0014] In any of the above embodiments, it is preferred that the slewing bearing lifting and adjusting mechanism includes a telescopic boom cylinder B fixedly connected to the first crossbeam frame and a telescopic arm B fixedly connected to the second crossbeam frame. One end of the telescopic arm B is inserted into the telescopic boom cylinder B and cooperates with the telescopic boom cylinder B to extend and retract. A telescopic drive cylinder B is provided on one side of the telescopic boom cylinder B. The cylinder body of the telescopic drive cylinder B is hinged to the hinge seat F on the telescopic arm B, and the telescopic end of the telescopic drive cylinder B is hinged to the hinge seat G on the telescopic boom cylinder B.

[0015] The telescopic boom B is driven by the telescopic drive cylinder B, and the telescopic boom B extends and retracts relative to each other. After the circular tunnel scabbing machine enters the circular tunnel, the position of the slewing bearing is adjusted by the slewing bearing lifting and adjusting mechanism so that the center line of the slewing bearing 8 coincides with the center of the circular tunnel.

[0016] In any of the above embodiments, it is preferred that the chiseling head mounting frame is equipped with a dust suppression mechanism for the chiseling surface that cooperates with the chiseling head.

[0017] In any of the above solutions, it is preferred that the dust suppression mechanism for the chiseled surface is a spray dust suppression device, and the machine body is provided with a water supply device connected to the dust suppression mechanism for the chiseled surface, which suppresses dust by spraying water mist.

[0018] In any of the above embodiments, it is preferred that the dust suppression mechanism for the chiseling surface is a dust collection device, and the machine body is equipped with a negative pressure dust collection mechanism connected to the dust suppression mechanism for the chiseling surface, and the negative pressure dust collection mechanism is subsequently connected to an air handling unit. The dust collection hood of the dust collection device is installed on the outside of the chiseling roller, and the dust generated by chiseling is sucked into the collection box of the air handling unit by a negative pressure fan. The collection box has a built-in filter screen to filter the dust and reduce environmental pollution.

[0019] In any of the above embodiments, it is preferred that a limiting wheel is also installed at each end of the chiseling head mounting frame. The chiseling head mounting frame moves along the inner wall of the circular tunnel to ensure the working distance between the chiseling head and the inner wall of the circular tunnel and to control the chiseling depth.

[0020] In any of the above embodiments, preferably, the walking mechanism includes a left wheel frame and a right wheel frame arranged in a figure-eight pattern. A set of left-side walking wheels is installed at each of the front and rear ends of the left wheel frame, and a set of right-side walking wheels is installed at each of the front and rear ends of the right wheel frame. The left and right wheel frames are hinged to both sides of the bottom of the machine body. A left wheel frame tilt adjustment cylinder is also installed on the machine body, capable of changing the tilt angle of the left wheel frame. The left wheel frame tilt adjustment cylinder changes the angle between the left wheel frame and the machine body. Similarly, a right wheel frame tilt adjustment cylinder is also installed on the machine body, capable of changing the tilt angle of the right wheel frame. This design allows for adaptation to complex terrain within tunnels and enables smooth movement along the tunnel axis.

[0021] In any of the above embodiments, it is preferred that the first crossbeam frame is hinged to the machine body via a main hinge seat, and a swing cylinder capable of driving the first crossbeam frame to swing left and right relative to the machine body is also provided between the first crossbeam frame and the machine body. The cylinder body and telescopic end of the swing cylinder are respectively hinged to the telescopic boom cylinder B and the machine body.

[0022] In any of the above solutions, it is preferred that the left and right walking wheels are directly driven by corresponding hydraulic motors.

[0023] In any of the above embodiments, it is preferred that the tail of the fuselage is provided with a counterweight and a hydraulic control system.

[0024] In any of the above embodiments, it is preferred that the first crossbeam frame, the second crossbeam frame, and the third crossbeam frame are all horizontally arranged, and the slewing bearing is located in a vertical plane.

[0025] In any of the above solutions, it is preferable to replace the chiseling head with a milling head to achieve a modular design for multi-functional operation.

[0026] This application can be equipped with existing monitoring and remote control devices to achieve remote control operation and automated work, reducing personnel entry into hazardous areas. The dust removal system efficiently collects dust, improving the working environment. Equipped with a remote control module, it enables long-distance monitoring and reduces operational complexity.

[0027] Compared with the prior art, the present invention has the following beneficial effects: The circular tunnel roughening machine of this utility model, after entering the circular tunnel, adjusts the position of the slewing bearing through the lifting and adjusting mechanism of the slewing bearing so that the center line of the slewing bearing coincides with the center of the circular tunnel. After starting the roughening head, the telescopic working head adjusting mechanism drives the roughening head to fit against the inner wall of the circular tunnel. At the same time, the slewing bearing is started, and the slewing bearing can drive the roughening head to rotate around the center line of the slewing bearing. Under the drive of the slewing bearing, the roughening head rotates around the inner wall of the circular tunnel once, so as to continuously roughen the inner wall of the circular tunnel.

[0028] The circular tunnel roughening machine described in this utility model features a telescopic working head adjustment mechanism that can precisely fit the inner wall of circular tunnels of different diameters without disassembly or adjustment. This enables precise and uniform roughening of the inner wall of circular tunnels of different diameters, improving work efficiency and quality, reducing labor intensity, ensuring work safety, and adapting to diverse tunnel construction scenarios.

[0029] The circular tunnel roughening machine described in this utility model, combined with a walking mechanism, allows the equipment to move along the axis to the next section after a single section of work is completed, repeating the work until the entire tunnel roughening is completed, thus achieving continuous roughening of the tunnel inner wall and improving work efficiency several times compared to manual labor.

[0030] The circular tunnel roughening machine described in this utility model is suitable for roughening the concrete surface of circular tunnel linings in highway, railway, and water conservancy projects, providing a rough bonding surface for subsequent lining reinforcement, waterproofing, and other processes. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0032] Figure 1 These are schematic diagrams of embodiments 1 and 2 of this utility model; Figure 2 This is a structural diagram of the present invention in a circular tunnel; Figure 3 This is a structural diagram of Example 3; Figure 4 for Figure 1 3D Figure 1 ; Figure 5 for Figure 1 3D Figure 2 ; In the diagram: 1. Machine body; 2. First crossbeam frame; 3. Second crossbeam frame; 4. Third crossbeam frame; 5. Angle adjustment cylinder A; 6. Chisel head mounting bracket; 7. Chisel head; 8. Slewing bearing; 9. Telescopic boom cylinder A; 10. Telescopic boom A; 11. Telescopic drive cylinder A; 12. Telescopic boom cylinder B; 13. Telescopic boom B; 14. Telescopic drive cylinder B; 15. Chisel surface dust suppression mechanism; 16. Limit wheel; 17. Left wheel frame; 18. Right wheel frame; 19. Left wheel frame tilt adjustment cylinder; 20. Right wheel frame tilt adjustment cylinder; 21. Left traveling wheel; 22. Right traveling wheel; 23. Swing cylinder. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0034] Example 1, such as Figure 1-2 As shown, the circular tunnel shaving machine includes a body 1 and a traveling mechanism installed at the bottom of the body 1, and also includes a third crossbeam frame 4. The front end of the body 1 is equipped with a slewing bearing lifting and adjusting mechanism via a first crossbeam frame 2. The execution end of the slewing bearing lifting and adjusting mechanism is equipped with a second crossbeam frame 3. The second crossbeam frame 3 and the third crossbeam frame 4 are connected by a slewing bearing 8. The other end of the third crossbeam frame 4 is equipped with a telescopic working head adjusting mechanism. The execution end of the telescopic working head adjusting mechanism is equipped with a shaving head mounting frame 6, and a shaving head 7 is mounted on the shaving head mounting frame 6.

[0035] After the circular tunnel roughening machine enters the circular tunnel, the position of the slewing bearing 8 is adjusted by the slewing bearing lifting and adjusting mechanism so that the center line of the slewing bearing 8 coincides with the center of the circular tunnel. After the roughening head 7 is started, the telescopic working head adjusting mechanism drives the roughening head 7 to fit against the inner wall of the circular tunnel. At the same time, the slewing bearing 8 is started, which drives the roughening head 7 to rotate around its center line. Under the drive of the slewing bearing 8, the roughening head 7 rotates around the inner wall of the circular tunnel once, thus continuously roughening the inner wall of the circular tunnel. The design of the telescopic working head adjusting mechanism can precisely fit the inner wall of circular tunnels of different diameters without disassembly and adjustment, achieving precise and uniform roughening of the inner wall of circular tunnels of different diameters, improving work efficiency and quality, reducing labor intensity, ensuring work safety, and adapting to diverse tunnel construction scenarios. Combined with the walking mechanism, after the completion of a single section of work, the equipment moves along the axis to the next section and repeats the work until the entire tunnel roughening is completed, achieving continuous roughening of the inner wall of the tunnel, and improving work efficiency several times compared to manual work. It is suitable for roughening the concrete surface of circular tunnel lining in highway, railway and water conservancy projects, providing a rough bonding surface for subsequent lining reinforcement, waterproofing and other processes.

[0036] Example 2, as Figure 1-2 As shown, the circular tunnel shaving machine includes a body 1 and a traveling mechanism installed at the bottom of the body 1, and also includes a third crossbeam frame 4. The front end of the body 1 is equipped with a slewing bearing lifting and adjusting mechanism via a first crossbeam frame 2. The execution end of the slewing bearing lifting and adjusting mechanism is equipped with a second crossbeam frame 3. The second crossbeam frame 3 and the third crossbeam frame 4 are connected by a slewing bearing 8. The other end of the third crossbeam frame 4 is equipped with a telescopic working head adjusting mechanism. The execution end of the telescopic working head adjusting mechanism is equipped with a shaving head mounting frame 6, and a shaving head 7 is mounted on the shaving head mounting frame 6.

[0037] Furthermore, the telescopic working head adjustment mechanism includes a telescopic arm A10, a telescopic drive cylinder A11, and a telescopic boom cylinder A9 fixedly connected to the third crossbeam frame 4. One end of the telescopic arm A10 is inserted into the telescopic boom cylinder A9 and extends and retracts in cooperation with the telescopic boom cylinder A9. The cylinder body of the telescopic drive cylinder A11 is hinged to the hinge seat A on the telescopic arm A10, and the telescopic end of the telescopic drive cylinder A11 is hinged to the hinge seat B on the telescopic boom cylinder A9. The telescopic drive cylinder A11 drives the telescopic boom cylinder A9 and the telescopic arm A10 to extend and retract relative to each other, driving the chiseling head 7 to fit against the inner wall of the circular tunnel.

[0038] Furthermore, referring to Figure 4 and Figure 5The chisel head mounting bracket 6 is hinged to the top of the telescopic arm A10 via a hinge seat C. A driver A is also provided between the chisel head mounting bracket 6 and the telescopic arm A10, capable of changing the rotation angle of the chisel head mounting bracket 6. Driver A changes the angle between the chisel head mounting bracket 6 and the telescopic arm A10. The driver A allows for fine-tuning of the tilt angle of the chisel head mounting bracket 6, ensuring precise contact between the chisel assembly and the inner wall of the circular tunnel.

[0039] Furthermore, the actuator A is an angle-adjusting cylinder A5. The cylinder body of the angle-adjusting cylinder A5 is hinged to the hinge seat E on the chisel head mounting frame 6, and the telescopic end of the angle-adjusting cylinder A5 is hinged to the hinge seat D on the telescopic arm A10. By controlling the extension and retraction of the angle-adjusting cylinder A5, the tilt angle of the chisel head mounting frame 6 can be finely adjusted.

[0040] Furthermore, a reinforcing rib is provided between the third crossbeam frame 4 and the telescopic boom cylinder A9.

[0041] Furthermore, the slewing bearing lifting and adjusting mechanism includes a telescopic boom cylinder B12 fixedly connected to the first crossbeam frame 2 and a telescopic arm B13 fixedly connected to the second crossbeam frame 3. One end of the telescopic arm B13 is inserted into the telescopic boom cylinder B12 and cooperates with the telescopic boom cylinder B12 to extend and retract. A telescopic drive cylinder B14 is provided on one side of the telescopic boom cylinder B12. The cylinder body of the telescopic drive cylinder B14 is hinged to the hinge seat F on the telescopic arm B13, and the telescopic end of the telescopic drive cylinder B14 is hinged to the hinge seat G on the telescopic boom cylinder B12.

[0042] The telescopic drive cylinder B14 drives the telescopic boom cylinder B12 and telescopic boom B13 to extend and retract relative to each other. After the circular tunnel scabbing machine enters the circular tunnel, the position of the slewing bearing 8 is adjusted by the slewing bearing lifting and adjusting mechanism so that the center line of the slewing bearing 8 coincides with the center of the circular tunnel.

[0043] Furthermore, the chisel head mounting bracket 6 is equipped with a chisel surface dust reduction mechanism 15 that cooperates with the chisel head 7.

[0044] Furthermore, the dust suppression mechanism 15 for the chiseled surface is a spray dust suppression device. The machine body 1 is equipped with a water supply device connected to the dust suppression mechanism 15 for spraying water mist to suppress dust. The dust suction hood of the dust collection device is installed on the outside of the chiseling roller. The dust generated by chiseling is sucked into the collection box of the air handling device by a negative pressure fan. The collection box has a built-in filter screen to filter the dust and reduce environmental pollution.

[0045] Furthermore, a limiting wheel 16 is installed at each end of the chisel head mounting frame 6. The chisel head mounting frame 6 moves along the inner wall of the circular tunnel to ensure the working distance between the chisel head 7 and the inner wall of the circular tunnel and to control the chiseling depth.

[0046] Furthermore, the walking mechanism includes a left wheel frame 17 and a right wheel frame 18 arranged in a V-shape. A set of left-side walking wheels 21 are respectively installed at the front and rear ends of the left wheel frame 17, and a set of right-side walking wheels 22 are respectively installed at the front and rear ends of the right wheel frame 18. The left wheel frame 17 and the right wheel frame 18 are hinged to both sides of the bottom of the machine body 1. A left wheel frame tilt adjustment cylinder 19 is also installed on the machine body 1, capable of changing the tilt angle of the left wheel frame 17. The left wheel frame tilt adjustment cylinder 19 changes the angle between the left wheel frame 17 and the machine body 1. A right wheel frame tilt adjustment cylinder 20 is also installed on the machine body 1, capable of changing the tilt angle of the right wheel frame 18. The right wheel frame tilt adjustment cylinder 20 changes the angle between the right wheel frame 18 and the machine body 1. This mechanism can adapt to complex terrain within tunnels and can move smoothly along the tunnel axis.

[0047] Furthermore, the first crossbeam frame 2 is hinged to the machine body 1 via the main hinge seat. A swing cylinder 27 capable of driving the first crossbeam frame 2 to swing left and right relative to the machine body 1 is also provided between the first crossbeam frame 2 and the machine body 1. The cylinder body and telescopic end of the swing cylinder are respectively hinged to the telescopic boom cylinder B12 and the machine body 1.

[0048] Furthermore, the left-side traveling wheel 21 and the right-side traveling wheel 22 are directly driven by their respective hydraulic motors.

[0049] Furthermore, a counterweight and hydraulic control system are provided at the tail of the fuselage 1.

[0050] Furthermore, the first crossbeam frame 2, the second crossbeam frame 3, and the third crossbeam frame 4 are all horizontally arranged, and the slewing bearing 8 is located in a vertical plane.

[0051] Example 3, referring to Figure 3 The difference from Embodiment 2 is that the dust removal mechanism 15 of the chiseled surface is a dust collection device, and the body 1 is provided with a negative pressure dust collection mechanism connected to the dust removal mechanism 15 of the chiseled surface, and the negative pressure dust collection mechanism is connected to an air treatment device.

[0052] Example 4 differs from Example 2 in that the chiseling head 7 is replaced with a milling head, realizing a modular design for multi-functional operation.

[0053] Example 5 differs from Example 2 in that it can be equipped with existing monitoring and remote control devices to achieve remote control operation and automated work, reducing personnel entry into hazardous areas, and enabling the dust removal system to efficiently collect dust, thus improving the working environment. By equipping a remote control module, long-distance monitoring can be achieved, reducing operational difficulty.

[0054] The circular tunnel roughening machine of this utility model, after entering the circular tunnel, adjusts the position of the slewing bearing through the lifting and adjusting mechanism of the slewing bearing so that the center line of the slewing bearing coincides with the center of the circular tunnel. After starting the roughening head, the telescopic working head adjusting mechanism drives the roughening head to fit against the inner wall of the circular tunnel. At the same time, the slewing bearing is started, and the slewing bearing can drive the roughening head to rotate around the center line of the slewing bearing. Under the drive of the slewing bearing, the roughening head rotates around the inner wall of the circular tunnel once, so as to continuously roughen the inner wall of the circular tunnel.

[0055] The circular tunnel roughening machine described in this utility model features a telescopic working head adjustment mechanism that can precisely fit the inner wall of circular tunnels of different diameters without disassembly or adjustment. This enables precise and uniform roughening of the inner wall of circular tunnels of different diameters, improving work efficiency and quality, reducing labor intensity, ensuring work safety, and adapting to diverse tunnel construction scenarios.

[0056] The circular tunnel roughening machine described in this utility model, combined with a walking mechanism, allows the equipment to move along the axis to the next section after a single section of work is completed, repeating the work until the entire tunnel roughening is completed, thus achieving continuous roughening of the tunnel inner wall and improving work efficiency several times compared to manual labor.

[0057] The circular tunnel roughening machine described in this utility model is suitable for roughening the concrete surface of circular tunnel linings in highway, railway, and water conservancy projects, providing a rough bonding surface for subsequent lining reinforcement, waterproofing, and other processes.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0059] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A circular tunnel roughening machine, comprising a machine body and a traveling mechanism mounted at the bottom of the machine body, characterized in that: It also includes a third crossbeam frame. The front end of the machine body is equipped with a slewing bearing lifting and adjusting mechanism via the first crossbeam frame. The execution end of the slewing bearing lifting and adjusting mechanism is equipped with a second crossbeam frame. The second crossbeam frame and the third crossbeam frame are connected by a slewing bearing. The other end of the third crossbeam frame is equipped with a telescopic working head adjusting mechanism. The execution end of the telescopic working head adjusting mechanism is equipped with a chisel head mounting frame. The chisel head is mounted on the chisel head mounting frame.

2. The circular tunnel roughening machine according to claim 1, characterized in that, The telescopic working head adjustment mechanism includes a telescopic arm A, a telescopic drive cylinder A, and a telescopic boom cylinder A fixedly connected to the third crossbeam frame. One end of the telescopic arm A is inserted into the telescopic boom cylinder A and extends and retracts in cooperation with the telescopic boom cylinder A. The cylinder body of the telescopic drive cylinder A is hinged to the hinge seat A on the telescopic arm A, and the telescopic end of the telescopic drive cylinder A is hinged to the hinge seat B on the telescopic boom cylinder A.

3. The circular tunnel roughening machine according to claim 2, characterized in that, The chisel head mounting bracket is hinged to the top of the telescopic arm A via a hinge seat C. A driver A is also provided between the chisel head mounting bracket and the telescopic arm A, which can change the rotation angle of the chisel head mounting bracket. The driver A causes the angle between the chisel head mounting bracket and the telescopic arm A to change.

4. The circular tunnel roughening machine according to claim 3, characterized in that, The driver A is an angle-adjusting cylinder A. The cylinder body of the angle-adjusting cylinder A is hinged to the hinge seat E on the chisel head mounting frame, and the telescopic end of the angle-adjusting cylinder A is hinged to the hinge seat D on the telescopic arm A.

5. The circular tunnel roughening machine according to claim 4, characterized in that, A reinforcing rib is provided between the third crossbeam frame and the telescopic boom cylinder A.

6. The circular tunnel roughening machine according to claim 5, characterized in that, The slewing bearing lifting and adjusting mechanism includes a telescopic boom cylinder B fixedly connected to the first crossbeam frame and a telescopic arm B fixedly connected to the second crossbeam frame. One end of the telescopic arm B is inserted into the telescopic boom cylinder B and cooperates with the telescopic boom cylinder B to extend and retract. A telescopic drive cylinder B is provided on one side of the telescopic boom cylinder B. The cylinder body of the telescopic drive cylinder B is hinged to the hinge seat F on the telescopic arm B, and the telescopic end of the telescopic drive cylinder B is hinged to the hinge seat G on the telescopic boom cylinder B.

7. The circular tunnel roughening machine according to claim 6, characterized in that, The chipping head mounting frame is equipped with a dust suppression mechanism for the chipping surface that works in conjunction with the chipping head.

8. The circular tunnel roughening machine according to claim 7, characterized in that, The chipper head mounting bracket is also equipped with a limit wheel at each end.

9. The circular tunnel roughening machine according to claim 1, characterized in that, The walking mechanism includes a left wheel frame and a right wheel frame arranged in a figure-eight pattern. A set of left-side walking wheels is installed at each of the front and rear ends of the left wheel frame, and a set of right-side walking wheels is installed at each of the front and rear ends of the right wheel frame. The left and right wheel frames are hinged to each other on opposite sides of the bottom of the machine body. A left wheel frame tilt adjustment cylinder is also installed on the machine body, capable of changing the tilt angle of the left wheel frame. The left wheel frame tilt adjustment cylinder changes the angle between the left wheel frame and the machine body. Similarly, a right wheel frame tilt adjustment cylinder is also installed on the machine body, capable of changing the tilt angle of the right wheel frame. The right wheel frame tilt adjustment cylinder changes the angle between the right wheel frame and the machine body.

10. The circular tunnel roughening machine according to any one of claims 1-9, characterized in that, The first crossbeam frame is hinged to the machine body via a main hinge seat. A swing cylinder capable of driving the first crossbeam frame to swing left and right relative to the machine body is also provided between the first crossbeam frame and the machine body. The cylinder body and telescopic end of the swing cylinder are respectively hinged to the telescopic boom cylinder B and the machine body.

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