Grinding device and repairing device for cutting head of heading machine
By precisely controlling the contact position between the grinding wheel and the cutting head through a slide rail and slider structure, combined with a limit and gear rack mechanism, the problems of inaccurate repair and complex operation in existing devices are solved, and efficient and safe cutting head repair is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-06
AI Technical Summary
Existing tunneling machine cutter head repair devices have difficulty accurately controlling the contact position between the grinding wheel and the cutter head, resulting in inaccurate repairs and easy damage to the cutting tooth holder. Furthermore, existing devices are complex to operate and difficult to perform repairs efficiently.
The grinding mechanism is controlled to rotate around the clamping mechanism using a slide rail and slider structure. The contact position between the grinding wheel and the cutting head is precisely controlled by the adjustment mechanism. The cutting head is ground by the top surface of the grinding mechanism to prevent side damage. At the same time, the positional accuracy is improved by using a limiting mechanism and a gear and rack mechanism.
It enables precise repair of the cutting head, prevents damage to the cutting head from the side of the grinding mechanism, simplifies the operation process, and improves repair efficiency and safety.
Smart Images
Figure CN223971438U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunneling machine cutting head repair technology, and in particular to a tunneling machine cutting head grinding device and repair device. Background Technology
[0002] Tunnel boring machines (TBMs) are widely used in coal mines, metal mines, railways, subways, water conservancy, and other fields. The working principle of a TBM is to utilize supports based on the tunnel wall to provide a jacking reaction force. Under this jacking pressure, the TBM's cutting head rolls on the rock surface and cuts and breaks the rock through static pressure. Therefore, the TBM's cutting head is very prone to damage and needs timely repair to avoid affecting production efficiency.
[0003] Existing adjustment devices for tunneling machine cutting heads typically use a clamping mechanism to secure the cutting head to a turntable, adjusting its position relative to the grinding mechanism by rotating the turntable. However, due to the significant weight of the tunneling machine cutting head, the movement of damaged areas is difficult to precisely control due to inertia when the rotating motor drives it, requiring multiple adjustments. Furthermore, to prevent collisions between the cutting head and the grinding wheel, a certain distance must be maintained between them during rotation. This necessitates operators relying on visual inspection and experience to judge the required rotation angle, which is difficult to achieve precisely. Additionally, this method grinds the cutting head using the rim of the grinding wheel, making it prone to accidental contact and damage to surrounding cutting tooth holders during grinding. Simultaneously, the surrounding cutting tooth holders can hinder the grinding mechanism's proximity to the cutting head. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing a grinding and repair device for a tunneling machine cutting head. This device controls the grinding mechanism to rotate around the clamping mechanism, which facilitates precise control of the contact position between the grinding wheel and the cutting head, thereby facilitating the repair of the cutting head. At the same time, the grinding mechanism grinds the cutting head through its top surface, making it easier for the grinding mechanism to approach the cutting tooth seat and preventing damage to the cutting head from the sides of the grinding mechanism. It is simple, efficient, safe, reliable, and easy to operate.
[0005] This utility model is achieved through the following technical solution: It provides an adjustment device for repairing the cutting head of a tunneling machine, including a worktable with a clamping mechanism and a grinding mechanism. The cutting head is clamped within the clamping mechanism. The worktable also includes an adjustment mechanism for adjusting the position of the grinding mechanism relative to the cutting head. The adjustment mechanism includes slide rails A, B, and C, and a slider. Slide rail A surrounds the outside of the clamping mechanism. Slide rail B slides within slide rail A and extends along the height direction of the cutting head. Slide rail C slides within slide rail B and extends along the width direction of the cutting head. The slider slides within slide rail C. The grinding mechanism is connected to the slider, and the working surface of the grinding mechanism faces the top of the cutting head. The grinding mechanism is controlled to rotate around the clamping mechanism via slide rails A, B, C, and the slider, thereby facilitating precise control of the contact position between the grinding wheel and the cutting head, and thus facilitating the repair of the cutting head. Simultaneously, grinding the cutting head via the top surface of the grinding mechanism allows the grinding mechanism to approach the cutting tooth seat, preventing damage to the cutting head from the sides of the grinding mechanism.
[0006] As an optimization, the grinding mechanism includes a bracket and a grinding wheel mounted on the bracket. The bracket is hinged to the slider, and the hinge axis of the bracket is perpendicular to the axis of the slide rail C. The working angle of the grinding mechanism can be adjusted by the grinding mechanism hinged to the slider to facilitate the grinding operation.
[0007] As an optimization, the bracket is connected to the slider via a limiting mechanism; the limiting mechanism includes a limiting wheel fixed to the bracket with its axis being the same as the hinge axis of the bracket, and several limiting grooves arranged sequentially along the circumference of the limiting wheel on the limiting wheel; the slider has a sliding hole, and a guide rod slides through the sliding hole, one end of the guide rod passes through a return spring and is connected to a limiting block, and the movement trajectory of the limiting block intersects with the movement trajectory of the limiting groove; the limiting mechanism prevents the grinding mechanism from rotating during operation.
[0008] As an optimization, an operating lever is fixed on the bracket, and the axis of the operating lever intersects or is not in the same plane as the hinge axis of the bracket; the angle of the grinding mechanism can be easily adjusted by the operating lever.
[0009] As an optimization, the worktable is equipped with a drive mechanism that drives slide rail B to slide within slide rail A, slide rail C to slide within slide rail B, and slide slider to slide within slide rail C through a gear and rack mechanism; the gear and rack mechanism improves the accuracy of the grinding mechanism's movement position.
[0010] As an optimization, the clamping mechanism includes multiple clamping blocks arranged in a circular pattern, forming a clamping space between the multiple clamping blocks for clamping the cutting head; the clamping blocks prevent the cutting head from shifting.
[0011] As an optimization, the clamping surface of the clamping block is an arc surface, and anti-slip textures or anti-slip protrusions are provided on the clamping surface; the anti-slip textures or anti-slip protrusions prevent the cutting head from deflecting.
[0012] As an optimization, the worktable is provided with several slides extending toward the clamping space, and the clamping blocks are slidably placed in the slides; the position of the clamping blocks is adjusted by adjusting the slides, thereby adjusting the size of the clamping space.
[0013] As an optimization, the tunneling machine cutting head grinding device described in any one of the embodiments is included.
[0014] The beneficial effects of this utility model are as follows: the grinding mechanism is controlled to rotate around the clamping mechanism by slide rails A, B, C and slider, which facilitates precise control of the contact position between the grinding wheel and the cutting head, thereby facilitating the repair of the cutting head. At the same time, the cutting head is ground by the top surface of the grinding mechanism, which facilitates the grinding mechanism to approach the cutting tooth seat and prevents the side of the grinding mechanism from damaging the cutting head. The working angle of the grinding mechanism is adjusted by the grinding mechanism hinged on the slider, which facilitates the grinding operation. The limiting mechanism prevents the grinding mechanism from rotating during operation. The gear and rack mechanism improves the accuracy of the moving position of the grinding mechanism. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model (angle 1);
[0016] Figure 2 for Figure 1 A schematic diagram of the structure at point A;
[0017] Figure 3 for Figure 2 A schematic diagram of the structure at point B;
[0018] Figure 4 This is a schematic diagram of the structure of this utility model (angle two);
[0019] As shown in the figure:
[0020] 1. Worktable; 2. Clamping mechanism; 3. Grinding mechanism; 4. Adjustment mechanism; 5. Limiting mechanism; 6. Gear and rack mechanism; 7. Drive mechanism; 8. Operating lever; 101. Slide rail; 201. Clamping block; 301. Bracket; 302. Grinding wheel; 303. Motor D; 401. Slide rail A; 402. Slide rail B; 403. Slide rail C; 404. Slider; 501. Limiting wheel; 502. Guide rod; 503. Return spring; 504. Limiting block. Detailed Implementation
[0021] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0022] like Figure 1The present invention discloses an adjustment device for repairing the cutting head of a tunneling machine, comprising a workbench 1, a clamping mechanism 2 and a grinding mechanism 3, wherein the cutting head is clamped in the clamping mechanism 2; the workbench 1 is provided with an adjustment mechanism 4 for adjusting the position of the grinding mechanism 3 relative to the cutting head; the adjustment mechanism 4 includes a slide rail A401, a slide rail B402, a slide rail C403 and a slider 404, the slide rail A401 is arranged around the outside of the clamping mechanism 2, the slide rail B402 slides in the slide rail A401 and extends along the height direction of the cutting head, the slide rail C403 slides in the slide rail B402 and extends along the width direction of the tunneling cutting head, the slider 404 slides in the slide rail C403, the grinding mechanism 3 is connected to the slider 404, and the working surface of the grinding mechanism 3 is the top surface facing the cutting head. Specifically, slide rail A401 is a circular structure extending along the horizontal plane, slide rail B402 extends upward in the vertical direction, and slide rail C403 extends vertically towards the clamping space of clamping mechanism 2 in the horizontal direction; the axis of grinding mechanism 3 is oriented towards the clamping space of clamping mechanism 2.
[0023] The cutting head is fixed to the worktable 1 by the clamping mechanism 2; slide rail B402 slides on slide rail A401, slide rail B402 drives slide rail C403, slider 404 and grinding mechanism 3 to rotate around the cutting head until the working end of grinding mechanism 3 faces the damaged part of the cutting head; slide rail C403 is pushed, slide rail C403 drives slider 404 and grinding mechanism 3 to slide on slide rail B402 until the working end of grinding mechanism 3 is level with the damaged part of the cutting head; slide rail 404 is pushed, slide rail 404 drives grinding mechanism 3 to slide on slide rail C403 facing the damaged part of the cutting head. The damaged part of the cutting head moves until the working end of the grinding mechanism 3 comes into contact with the damaged part of the cutting head; the grinding mechanism 3 is activated and grinds the damaged part of the cutting head; at the same time, the slider 404 is pushed, and the slider 404 drives the grinding mechanism 3 to move toward the damaged part of the cutting head on the slide rail C403 until the grinding mechanism 3 completes the grinding work and is turned off; the slider 404 is pushed, and the slider 404 carries the grinding mechanism 3 to move away from the cutting head on the slide rail C403; then the grinding work begins on the next damaged part of the cutting head.
[0024] like Figure 1The polishing mechanism 3 shown includes a bracket 301 and a polishing wheel 302 mounted on the bracket 301. The bracket 301 is hinged to the slider 404, and the hinge axis of the bracket 301 is perpendicular to the axis of the slide rail C403. The polishing wheel 302 has a cylindrical structure, and the working end of the polishing wheel 302 is located at the top of the cylinder. The axis of the polishing wheel 302 extends toward the clamping space of the clamping mechanism 2. The hinge axis of the bracket 301 extends horizontally and / or vertically, or the bracket 301 is ball-hinged to the slider 404 by a hinge ball. The polishing mechanism 3 also includes a motor D303 fixed on the bracket 301, and the polishing wheel 302 is coaxially fixed to the output end of the motor D303.
[0025] Rotate the bracket 301 on the slider 404. The bracket 301 drives the grinding mechanism 3 to rotate until the working end of the grinding wheel 302 points to the damaged part of the cutting head. The slider 404 drives the grinding mechanism 3 to move on the slide rail C403 toward the damaged part of the cutting head until the top of the grinding wheel 302 contacts the damaged part of the cutting head. Start the grinding mechanism 3. The grinding wheel 302 rotates and the top of the grinding wheel 302 grinds the damaged part of the cutting head.
[0026] like Figure 1 The bracket 301 shown is connected to the slider 404 via a limiting mechanism 5. The limiting mechanism 5 includes a limiting wheel 501 fixed to the bracket 301 with its axis being the same as the hinge axis of the bracket 301. The limiting wheel 501 has several limiting grooves arranged sequentially along its circumference. The slider 404 has a sliding hole, through which a guide rod 502 slides. One end of the guide rod 502 passes through a return spring 503 and is connected to a limiting block 504. The movement trajectory of the limiting block 504 intersects with the movement trajectory of the limiting groove. A handle is fixed to the limiting block 504. The guide rod 502 has a positioning groove extending along its circumference. The sliding groove 101 is adapted to the positioning groove to prevent the guide rod 502 from rotating within the sliding groove 101 during sliding.
[0027] Pull the limit block 504, the return spring 503 retracts, and the guide rod 502 slides in the sliding hole until the limit block 504 is completely disengaged from the limit groove on the limit wheel 501; rotate the bracket 301 to the designated position, release the limit block 504, the return spring 503 relaxes, and the guide rod 502 slides in the sliding hole until the limit block 504 is pulled into the corresponding limit groove on the limit wheel 501, and the bracket 301 is fixed on the slider 404.
[0028] like Figure 1 An operating lever 8 is fixed on the bracket 301 shown, and the axis of the operating lever 8 intersects or is not in the same plane as the hinge axis of the bracket.
[0029] The operating lever 8 is operated, and the bracket 301 rotates on the slider 404, which drives the grinding mechanism 3 to rotate synchronously until the working end of the grinding wheel 302 points to the damaged part of the cutting head.
[0030] like Figure 1 The workbench 1 shown is equipped with a drive mechanism 7 that drives slide rail B402 to slide within slide rail A401, slide rail C403 to slide within slide rail B402, and slider 404 to slide within slide rail C403 via a gear and rack mechanism 6.
[0031] The gear and rack mechanism 6 includes a rack A extending circumferentially along slide rail A401, a rack B extending axially along slide rail B402, and a rack C extending axially along slide rail C403; rack A is meshed with a gear A mounted on slide rail B402, and a motor A for driving gear A to rotate is fixed on slide rail B402; rack B is meshed with a gear B mounted on slide rail C403, and a motor B for driving gear B to rotate is fixed on slide rail C403; rack C is meshed with a gear C mounted on slider 404, and a motor C for driving gear C to rotate is fixed on slider 404; the drive mechanism 7 is prior art and includes motor A, motor B, and motor C.
[0032] Start the drive mechanism 7. The drive mechanism 7 drives the slide rail B402 to slide along the slide rail A401, the slide rail C403 to slide along the slide rail B402, and the slider 404 to slide along the slide rail C403 respectively through the gear and rack mechanism 6.
[0033] like Figure 1 The clamping mechanism 2 shown includes a plurality of clamping blocks 201 distributed in a circular pattern, and a clamping space for clamping the cutting head is formed between the plurality of clamping blocks 201; the clamping blocks 201 are arranged evenly in sequence around the clamping space of the clamping mechanism 2.
[0034] The cutting head is placed between the clamping blocks 201, and the clamping blocks 201 clamp the cutting head.
[0035] like Figure 1 The clamping surface of the clamping block 201 shown is an arc surface, and anti-slip textures or anti-slip protrusions are provided on the clamping surface.
[0036] like Figure 1 The workbench 1 shown is provided with several slide grooves 101 extending toward the clamping space, and the clamping block 201 is slidably disposed in the slide grooves 101; the slide grooves 101 extend perpendicularly toward the axis of the clamping space.
[0037] The cutting head is placed between the clamping blocks 201, and the clamping blocks 201 slide within the slide groove 101 until the clamping blocks 201 complete the clamping of the cutting head.
[0038] like Figure 1 The image shows a grinding device for the cutting head of a tunneling machine, as described in any one of the claims.
[0039] In actual production, the cutting head is placed on the workbench 1 and positioned between the clamping blocks 201. The clamping mechanism 2 is activated, and the clamping blocks 201 slide within the slide groove 101 until the clamping blocks 201 complete the clamping of the cutting head.
[0040] Start the drive mechanism 7. The drive mechanism 7 drives the slide rail B402 to slide along the slide rail A401, the slide rail C403 to slide along the slide rail B402, and the slider 404 to slide along the slide rail C403 respectively through the gear and rack mechanism 6. The slide rail B402 drives the slide rail C403, the slider 404 and the grinding mechanism 3 to rotate around the cutting head until the working end of the grinding mechanism 3 faces the damaged part of the cutting head. The slide rail C403 drives the slider 404 and the grinding mechanism 3 to slide on the slide rail B402 until the working end of the grinding mechanism 3 is level with the damaged part of the cutting head. The slider 404 drives the grinding mechanism 3 to move on the slide rail C403 toward the damaged part of the cutting head until the top of the grinding wheel 302 is close to the damaged part of the cutting head.
[0041] Pulling the limit block 504 causes the return spring 503 to retract, and the guide rod 502 slides in the sliding hole until the limit block 504 is completely disengaged from the limit groove on the limit wheel 501; manipulating the operating lever 8 causes the bracket 301 to rotate on the slider 404 and drive the grinding mechanism 3 to rotate synchronously until the working end of the grinding wheel 302 points to the damaged part of the cutting head; releasing the limit block 504 causes the return spring 503 to relax, and the guide rod 502 slides in the sliding hole until it is pulled into the corresponding limit groove on the limit wheel 501, and the bracket 301 is fixed on the slider 404.
[0042] The slider 404 drives the grinding mechanism 3 to move along the slide rail C403 toward the damaged part of the cutting head until the top of the grinding wheel 302 contacts the damaged part of the cutting head; the grinding mechanism 3 is activated, the grinding wheel 302 rotates and the top of the grinding wheel 302 grinds the damaged part of the cutting head; the slider 404 drives the grinding mechanism 3 to move along the slide rail C403 toward the damaged part of the cutting head until the grinding mechanism 3 completes the grinding work and is turned off; the slider 404 carries the grinding mechanism 3 to move along the slide rail C403 away from the cutting head; then the grinding work begins on the next damaged part of the cutting head.
[0043] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.
Claims
1. A tunneling machine cutting head polishing device, comprising a workbench (1), a clamping mechanism (2) and a polishing mechanism (3) are arranged on the workbench (1), and a cutting head is clamped in the clamping mechanism (2); characterized in that: The workbench (1) is provided with an adjusting mechanism (4) for adjusting the position of the polishing mechanism (3) relative to the cutting head; the adjusting mechanism (4) comprises a sliding rail A (401), a sliding rail B (402), a sliding rail C (403) and a sliding block (404); the sliding rail A (401) is arranged around the outer side of the clamping mechanism (2); the sliding rail B (402) is slidably arranged in the sliding rail A (401) and extends along the height direction of the cutting head; the sliding rail C (403) is slidably arranged in the sliding rail B (402) and extends along the width direction of the cutting head; the sliding block (404) is slidably arranged in the sliding rail C (403); the polishing mechanism (3) is connected with the sliding block (404); and the working surface of the polishing mechanism (3) is the top surface facing the cutting head.
2. The boring machine cutting head dressing apparatus of claim 1, wherein: The polishing mechanism (3) comprises a support (301) and a polishing wheel (302) rotatably arranged on the support (301); the support (301) is hingedly connected with the sliding block (404); and the hinge axis of the support (301) is perpendicular to the axis of the sliding rail C (403).
3. The boring machine cutting head dressing apparatus of claim 2, wherein: The support (301) is connected with the sliding block (404) through a limiting mechanism (5); the limiting mechanism (5) comprises a limiting wheel (501) fixedly arranged on the support (301) and having the same hinge axis as the support (301); a plurality of limiting grooves are arranged on the limiting wheel (501) and arranged in sequence along the circumferential direction of the limiting wheel (501); a sliding hole is formed in the sliding block (404); a guide rod (502) is slidably arranged in the sliding hole; one end of the guide rod (502) penetrates through a return spring (503) and is connected with a limiting block (504); and the movement track of the limiting block (504) intersects with the movement track of the limiting grooves.
4. The boring machine cutting head dressing apparatus of claim 2, wherein: An operating rod (8) is fixedly arranged on the support (301); and the axis of the operating rod (8) intersects with or is in a different plane from the hinge axis of the support (301).
5. The boring machine cutting head dressing apparatus of claim 1, wherein: The workbench (1) is provided with a driving mechanism (7) for driving the sliding rail B (402) to slide in the sliding rail A (401), the sliding rail C (403) to slide in the sliding rail B (402) and the sliding block (404) to slide in the sliding rail C (403) through a gear and rack mechanism (6).
6. The boring machine cutting head dressing apparatus of claim 1, wherein: The clamping mechanism (2) comprises a plurality of clamping blocks (201) arranged in a circumferential direction; and a clamping space for clamping the cutting head is formed between the plurality of clamping blocks (201).
7. The boring machine cutting head dressing apparatus of claim 6, wherein: The clamping surface of the clamping block (201) is a circular arc surface; and anti-skid lines or anti-skid protrusions are arranged on the clamping surface.
8. The boring machine cutting head dressing apparatus of claim 6, wherein: A plurality of sliding grooves (101) extending towards the clamping space are arranged on the workbench (1); and the clamping blocks (201) are slidably arranged in the sliding grooves (101).
9. A roadheader cutting head repair device, characterized by: The tunneling machine cutting head polishing device comprises the tunneling machine cutting head polishing device according to any one of claims 1-8.