Milling head adjusting structure for tunnel underground excavation machine
By designing a milling head adjustment structure including protective box, slide chute block, motor, flat gear and other components, the problem that the traditional adjustment structure cannot be stable and shrink, and the stable expansion and efficient operation of the milling head is achieved.
Patent Information
- Application Number
- CN202421075540.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The traditional tunnel excavator milling head adjustment structure cannot be stable to expand and adjust, which affects the quality of the project.
A milling head adjustment structure including protective box, slide block, motor, flat gear, rack, slide block, sliding column and rotating rod is designed. The flat gear is driven by the motor to rotate, driving the rack, slide block and slide. The column moves to achieve stable expansion and contraction of the milling head.
The stable expansion and contraction of the milling head is achieved, the operation efficiency and engineering quality are improved, and the problem of unstable traditional adjustment structure is solved.
Smart Images
Figure CN222457436U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a tunnel dark excavation device, in particular to a milling head adjustment structure used for a tunnel dark excavation machine. Background Art
[0002] As an important equipment for tunnel excavation, tunnel boring machine has the advantages of high efficiency, safety and environmental protection. Therefore, it has been widely used in tunnel construction. In the process of tunnel excavation, the milling head, as one of the key components of the tunnel boring machine, plays a vital role. Tunnel excavation needs to be precisely controlled according to design requirements. Adjusting the structure and position of the milling head can adjust the excavation depth and width to meet the needs of tunnel design.
[0003] The traditional adjustment structure is usually composed of a cutter head frame, a rotating motor, a rotating arm and a cutter head drive device. The milling head adjustment structure of the tunnel boring machine realizes the precise adjustment of the milling head through motor drive. First, the rotating motor starts to drive the rotating arm to rotate around the central axis to adjust the excavation direction of the milling head. When the milling head reaches the specified position, the cutter head drive device starts to drive the milling head to rotate at high speed and feed, thereby completing the excavation work. During the whole process, by precisely controlling and coordinating the work of each component, it is ensured that the milling head can excavate according to the predetermined trajectory and depth, thereby realizing efficient and safe excavation of the tunnel.
[0004] However, the traditional adjustment structure cannot stably adjust the telescopic adjustment of the milling head. The instability of the telescopic adjustment will directly affect the working accuracy of the milling head. In precision operations such as tunnel excavation, extremely high requirements are placed on the position and depth control of the milling head. The unstable adjustment structure will cause the milling head to deviate from the predetermined position, affecting the quality of the project. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a milling head adjustment structure for a tunnel boring machine, aiming to improve the problem that the traditional adjustment structure cannot stably adjust the telescopic adjustment of the milling head, which will affect the quality of the project.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a milling head adjustment structure for a tunnel boring machine, comprising a protective box, a slide block fixedly connected to the inside of the protective box, a motor 1 fixedly connected to the side wall of the slide block, a flat gear fixedly connected to the output end of the motor 1, a sliding block slidably connected to the inside of the slide block, a rack fixedly connected to the lower surface of the sliding block, the rack meshing with the flat gear, a sliding column fixedly connected to the inside of the sliding block, a rotating rod 1 rotatably connected to the inside of the protective box, a rotating rod 2 rotatably connected to one side wall of the rotating rod, one end of the sliding column is fixedly connected to a connecting block, the rotating rod 2 is rotatably connected to the side wall of the connecting block, the sliding block is slidably connected to the inside of the protective box, and a protective component is provided at the other end of the sliding column.
[0007] Furthermore, the protection assembly includes a protection block, the protection block is fixedly connected to one end of the sliding column, and a protection sleeve is fixedly connected inside the protection block.
[0008] Furthermore, the interior of the protective cover is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a first hollow column.
[0009] Furthermore, the first hollow column is rotatably connected to a rotating column, the second hollow column is rotatably connected to the rotating column, and one end of the second hollow column is fixedly connected to a milling head body.
[0010] Furthermore, the protection block is fixedly connected to the inside of the motor three, the output end of the motor three is fixedly connected to the support column, and the outer wall of the support column is fixedly connected to the rotating plate.
[0011] Furthermore, the outer wall of the support column is rotatably connected to a second rotating block, and the first hollow column is rotatably connected to the inside of the second rotating block.
[0012] Furthermore, a portion of a gear 1 is fixedly connected to the outer wall of the support column, a rotating block 1 is rotatably connected inside the rotating plate, and the hollow column 2 is rotatably connected inside the rotating block 1.
[0013] Furthermore, a side wall of the rotating block is fixedly connected with a partial gear 2, and the partial gear 2 is meshed with the partial gear 1.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, firstly, through the cooperation among the motor 1, the flat gear, the rack, the sliding block, the slide block, the rotating rod 2 and the rotating rod 1, the effect of stably extending and retracting the milling head is achieved, which solves the problem that the traditional adjustment structure cannot stably extend and retract the milling head, which will affect the quality of the project, thereby improving the working efficiency.
[0016] 2. In the utility model, firstly, through the coordination among the motor three, the support column, the partial gear one, the partial gear two, the rotating block one, the milling head body, the motor two and the hollow column, the effect of multi-angle adjustment of the milling head is achieved, which solves the problem of inflexible and inaccurate angle adjustment of the milling head in tunnel digging operations, thereby improving the quality of the excavation operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional diagram of a milling head adjustment structure for a tunnel boring machine proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a protection box for a milling head adjustment structure of a tunnel boring machine proposed by the utility model;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of a protective block of a milling head adjustment structure for a tunnel boring machine proposed in the utility model;
[0020] Figure 4 The utility model is a schematic diagram of the internal structure of a protective block of a milling head adjustment structure for a tunnel boring machine.
[0021] Legend:
[0022] 1. Protective box; 2. Slide block; 3. Motor 1; 4. Flat gear; 5. Sliding block; 6. Rack; 7. Sliding column; 8. Rotating rod 1; 9. Rotating rod 2; 10. Connecting block; 11. Protective block; 12. Protective cover; 13. Motor 2; 14. Hollow column 1; 15. Partial gear 1; 16. Rotating column; 17. Rotating block 1; 18. Partial gear 2; 19. Milling head body; 20. Hollow column 2; 21. Rotating plate; 22. Rotating block 2; 23. Motor 3; 24. Support column. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Reference Figure 1 and Figure 2, the utility model provides an embodiment: a milling head adjustment structure for a tunnel boring machine, including a protection box 1, a slide block 2 is fixedly connected inside the protection box 1, a motor 3 is fixedly connected to the side wall of the slide block 2, a flat gear 4 is fixedly connected to the output end of the motor 3, a sliding block 5 is slidably connected inside the slide block 2, a rack 6 is fixedly connected to the lower surface of the sliding block 5, the rack 6 is meshed with the flat gear 4, a sliding column 7 is fixedly connected inside the sliding block 5, a rotating rod 8 is rotatably connected inside the protection box 1, a rotating rod 2 9 is rotatably connected to the side wall of the rotating rod 8, one end of the sliding column 7 is fixedly connected to a connecting block 10, the rotating rod 2 9 is rotatably connected to the side wall of the connecting block 10, the sliding block 5 is slidably connected to the inside of the protection box 1, and a protection component is arranged at the other end of the sliding column 7;
[0025] Specifically, the motor 3 is started and its power is output to the spur gear 4. After being driven by the motor 3, the spur gear 4 starts to rotate. The rotation of the spur gear 4 is not an isolated event. It will trigger a series of transmission reactions. The spur gear 4 is meshed with the rack 6. Driven by the spur gear 4, the rack 6 will move accordingly. This movement is not random, but purposefully drives the sliding block 5 to slide inside the slide block 2. This is a key step, because the movement of the sliding block 5 will directly affect subsequent operations. During the movement of the sliding block 5, it will drive the sliding column 7 to move. The movement of the sliding column 7 is not meaningless. It will trigger the movement of the connecting block 10. The movement of the connecting block 10 has its own characteristics. The purpose of this invention is to drive the rotating rod 29 to rotate on its side wall. At this time, the rotation of the rotating rod 29 is not an isolated event. It will trigger the rotating rod 18 to rotate inside the protective box 1. The existence of the rotating rod 18 and the rotating rod 29 is to assist the movement of the sliding column 7 to be more stable. Finally, the movement of the sliding column 7 will drive the milling head body 19 to retract and extend. After this process is completed, the retracting operation of the milling head body 19 is successfully completed. In summary, the retracting operation of the milling head body 19 is achieved through a series of transmission components, which are driven in sequence. The operation of each component is to prepare for the operation of the next component. This design makes the retracting operation of the milling head body 19 both stable and efficient.
[0026] Reference Figure 1 , Figure 3 and Figure 4 The protection assembly includes a protection block 11, which is fixedly connected to one end of the sliding column 7, a protection sleeve 12 is fixedly connected inside the protection block 11, a motor 2 13 is fixedly connected inside the protection sleeve 12, a hollow column 14 is fixedly connected to the output end of the motor 2 13, a rotating column 16 is rotatably connected inside the hollow column 14, a hollow column 20 is rotatably connected inside the rotating column 16, and a milling head body 19 is fixedly connected to one end of the hollow column 20;
[0027] Specifically, the output end of the motor 2 13 drives the hollow column 1 14 to rotate. The rotation of the hollow column 1 14 is not isolated, and it will affect the entire adjustment system. Next, the rotation of the hollow column 1 14 will be transmitted to the rotating column 16, thereby driving it to rotate. This process is not over, because the rotation of the rotating column 16 will further drive the hollow column 2 20 to rotate. When the hollow column 20 rotates, it will drive the milling head body 19 to rotate. In this way, we have successfully achieved the adjustment of the left and right tilt angles of the milling head body 19.
[0028] Reference Figure 1 , Figure 3 and Figure 4 The protection block 11 is fixedly connected with a motor 3 23 inside, the output end of the motor 3 23 is fixedly connected with a support column 24, the outer wall of the support column 24 is fixedly connected with a rotating plate 21, the outer wall of the support column 24 is rotatably connected with a rotating block 22, the hollow column 14 is rotatably connected inside the rotating block 22, the outer wall of the support column 24 is fixedly connected with a partial gear 15, the rotating plate 21 is rotatably connected with a rotating block 17, the hollow column 20 is rotatably connected inside the rotating block 17, the side wall of the rotating block 17 is fixedly connected with a partial gear 2 18, and the partial gear 2 18 is meshed with the partial gear 15;
[0029] Specifically, the motor three 23 acts as a power source to drive the support column 24 to rotate. The role of the support column 24 is very important. It not only undertakes the task of transmitting power, but also drives the rotation of the partial gear 15. With the rotation of the support column 24, the partial gear 15 also starts to rotate. This partial gear 15 is meshed with the partial gear 2 18. Therefore, when the partial gear 15 rotates, the partial gear 2 18 will also rotate accordingly. This rotation relationship makes the partial gear 2 18 connected with the rotating block 17. When the partial gear 2 18 rotates, it will drive the rotating block 17 to rotate. This means that by adjusting the rotation of the partial gear 2 18, we can control the rotating block 17, and the up and down movement of the rotating block 17 ultimately leads to the up and down angle adjustment of the milling head body 19. In addition, the rotation of the support column 24 will also Drive the rotating plate 21 to rotate. The function of the rotating plate 21 is to adjust the position of part of the gear 2 18 during the rotation process so that it can move in the up and down directions. In this way, by adjusting the rotation of the support column 24, we can achieve precise control of the up and down angles of the milling head body 19. The advantage of this adjustment system is that it can achieve multi-angle adjustment of the milling head body 19 to meet the needs of different work scenes. In addition, the entire adjustment process relies on a precise mechanical structure to ensure the accuracy and stability of the adjustment. In actual applications, this system can effectively improve the use efficiency and life of the milling head body 19 and reduce maintenance costs. In short, through this precise adjustment system, we can easily achieve the adjustment of the left and right inclination angles and the up and down angles of the milling head body 19, which not only improves work efficiency, but also ensures work quality.
[0030] Working principle: when the milling head body 19 needs to be extended or retracted, the flat gear 4 is first driven to rotate through the output end of the motor 1 3. The rotation of the flat gear 4 will drive the meshing rack 6 to move, and the movement of the rack 6 will drive the sliding block 5 to slide inside the slide block 2. The movement of the sliding block 5 will drive the sliding column 7 to move, and the movement of the sliding column 7 will drive the connecting block 10 to move. The movement of the connecting block 10 will drive the rotating rod 2 9 to rotate on its side wall, and the rotation of the rotating rod 2 9 will drive the rotating rod 1 8 to rotate inside the protective box 1. The rotating rod 1 8 and the rotating rod 2 9 assist the movement of the sliding column 7 to be more stable, and the movement of the sliding column 7 will drive the milling head body 19 to extend or retract. At this time, the extension and retraction of the milling head body 19 is completed. When the milling head body 19 needs to be adjusted up and down, the support column 24 is first driven to rotate through the output end of the motor 3 23. The rotation of the support column 24 will drive part When the gear 15 rotates, the rotation of part of the gear 15 will drive the rotation of part of the gear 2 18 meshing therewith, and the rotation of part of the gear 2 18 will drive the rotating block 17 to rotate. At the same time, the rotation of the support column 24 will drive the rotating plate 21 to rotate, and the rotation of the rotating plate 21 will cause the part of the gear 2 18 to move up and down during the rotation. At this time, the rotation of the rotating block 17 will adjust the vertical angle of the milling head body 19. When it is necessary to adjust the left and right inclination angle of the milling head body 19, firstly, the output end of the motor 2 13 is used to drive the hollow column 14 to rotate, and the rotation of the hollow column 14 will drive the rotating column 16 to rotate, and the rotation of the rotating column 16 will drive the hollow column 20 to rotate, and the rotation of the hollow column 20 will drive the milling head body 19 to rotate, so as to adjust the left and right inclination angle of the milling head body 19. At the same time, when performing the left and right adjustment, the vertical angle of the milling head body 19 can also be adjusted.
[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A milling head adjustment structure for a tunnel boring machine, comprising a protective box (1), characterized in that: The protection box (1) is fixedly connected with a slide block (2) inside, the side wall of the slide block (2) is fixedly connected with a motor 1 (3), the output end of the motor 1 (3) is fixedly connected with a flat gear (4), the slide block (2) is slidably connected with a sliding block (5) inside, the lower surface of the sliding block (5) is fixedly connected with a rack (6), the rack (6) is meshed with the flat gear (4), the sliding block (5) is fixedly connected with a sliding column (7), the protection box (1) is rotatably connected with a rotating rod 1 (8), the side wall of the rotating rod 1 (8) is rotatably connected with a rotating rod 2 (9), one end of the sliding column (7) is fixedly connected with a connecting block (10), the rotating rod 2 (9) is rotatably connected to the side wall of the connecting block (10), the sliding block (5) is slidably connected inside the protection box (1), and the other end of the sliding column (7) is provided with a protective component.
2. The milling head adjustment structure for a tunnel boring machine according to claim 1, characterized in that: The protection assembly comprises a protection block (11), the protection block (11) is fixedly connected to one end of the sliding column (7), and a protection sleeve (12) is fixedly connected inside the protection block (11).
3. The milling head adjustment structure for a tunnel boring machine according to claim 2, characterized in that: The protective cover (12) is fixedly connected to a second motor (13) inside, and the output end of the second motor (13) is fixedly connected to a first hollow column (14).
4. The milling head adjustment structure for a tunnel boring machine according to claim 3, characterized in that: The first hollow column (14) is rotatably connected to a rotating column (16), the second hollow column (20) is rotatably connected to the rotating column (16), and one end of the second hollow column (20) is fixedly connected to a milling head body (19).
5. The milling head adjustment structure for a tunnel boring machine according to claim 4, characterized in that: The protection block (11) is fixedly connected to a third motor (23) inside, the output end of the third motor (23) is fixedly connected to a support column (24), and the outer wall of the support column (24) is fixedly connected to a rotating plate (21).
6. The milling head adjustment structure for a tunnel boring machine according to claim 5, characterized in that: The outer wall of the support column (24) is rotatably connected to a second rotating block (22), and the first hollow column (14) is rotatably connected to the inside of the second rotating block (22).
7. The milling head adjustment structure for a tunnel boring machine according to claim 6, characterized in that: The outer wall of the support column (24) is fixedly connected to a portion of the gear 1 (15), the interior of the rotating plate (21) is rotatably connected to a rotating block 1 (17), and the hollow column 2 (20) is rotatably connected to the interior of the rotating block 1 (17).
8. The milling head adjustment structure for a tunnel boring machine according to claim 7, characterized in that: The side wall of the rotating block 1 (17) is fixedly connected with a partial gear 2 (18), and the partial gear 2 (18) is meshed with the partial gear 1 (15).