Shield cutter head mechanism of shield tunneling machine

Abstract

The utility model relates to the technical field of shield equipment, in particular to a shield cutterhead mechanism of a shield tunneling machine, which can position a cutterhead main body, is convenient for replacing a hob, improves the convenience during replacement and improves the working efficiency. Comprising a cutterhead body, a plurality of grouting holes are evenly formed in the cutterhead body, a first cutter assembly is installed in the middle of the cutterhead body, a hob is installed in the middle of the cutterhead body through a replacement assembly, a second cutter assembly is installed on the outer edge of the cutterhead body, and a third cutter assembly is installed between the first cutter assembly and the second cutter assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of shield equipment, in particular to a shield cutter head mechanism of a shield tunneling machine. Background Art

[0002] The shield machine is a special engineering machinery for tunnel excavation, which mainly excavates by rotating the cutterhead at the front end of the shield body, so the cutterhead plays a vital role in the shield machine. Prior art publication number CN205778891U proposes a cutterhead structure of a shield machine, including a cutterhead, a plurality of active stirring rods are provided on the outer wall of the cutterhead; a plurality of first passive stirring rods are provided on the partition of the cutterhead; a second passive stirring rod is provided at the center of the drive box of the cutterhead; the active stirring rod includes an active stirring body, and a stirring blade is provided on the outer wall of the active stirring body. However, when encountering super-hard rock, directly using the cutter on the shield for cutting will not only cause a lot of wear on the cutter itself and shorten its service life, but also make it troublesome to replace the cutter. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a shield cutterhead mechanism of a shield tunneling machine which can position the cutterhead body, facilitate the replacement of the roller cutter, improve the convenience during replacement, and improve the work efficiency.

[0004] The utility model discloses a shield cutter mechanism of a shield tunneling machine, comprising a cutter disc main body, a plurality of grouting holes being evenly opened on the cutter disc main body, a first cutter assembly being installed at the middle of the cutter disc main body, a roller cutter being installed at the middle of the cutter disc main body through a replacement assembly, a second cutter assembly being installed at the outer edge of the cutter disc main body, and a third cutter assembly being installed between the first cutter assembly and the second cutter assembly; the cutter disc main body can be positioned during use by the first cutter assembly to ensure the travel direction of the cutter disc main body, the outer edge of the tunnel can be cut by the second cutter assembly, the roller cutter can be replaced easily by the replacement assembly, the convenience during replacement can be improved, and the use can be facilitated; the cutting surface can be scraped and leveled by the third cutter assembly to improve work efficiency.

[0005] Preferably, the first knife assembly includes a center positioning head and multiple center scrapers. The center positioning head is fixedly installed at the center position of the knife disc body, and multiple center scrapers are axially and evenly installed on the outer wall of the center positioning head. When the knife disc body rotates, the center positioning head is driven to align with the center position, and the center positioning head drives the center scraper to rotate to open holes, thereby positioning the knife disc body and ensuring the moving direction of the knife disc body.

[0006] Preferably, the disassembly assembly includes a plurality of plug-in boxes, a plurality of tool holders, a plurality of limit plates and a plurality of fixing studs, an installation groove is axially opened on the cutter disc body about the center positioning head, the plug-in box is fixedly installed at the installation groove at the rear end of the cutter disc body, the roller is rotatably installed at the front end of the tool holder, the limit plate is fixedly installed at the rear end of the tool holder, the tool holder is inserted into the plug-in box, fixing holes are opened on the plug-in box and the tool holder, and the fixing studs are inserted into the fixing holes to connect the plug-in box and the tool holder; when the roller needs to be replaced for cutting different rock formations, the fixing studs are removed and taken out of the plug-in box through the tool holder, which is convenient for replacing the matching roller, improves the convenience during replacement, and is conducive to improving work efficiency.

[0007] Preferably, the second knife assembly includes a plurality of peripheral gauging knives and a plurality of wear-resistant carbide tooth sleeves, the plurality of peripheral gauging knives are axially and evenly installed on the front end of the cutter disc body, the cutting direction sleeve of the peripheral gauging knives is provided with a wear-resistant carbide tooth sleeve, and the wear-resistant carbide tooth sleeve is fixedly connected to the peripheral gauging knives through a mounting seat; when the cutter disc body rotates, the peripheral gauging knives are driven to rotate to cut the outer edge of the tunnel, and the wear-resistant carbide tooth sleeves can be used to efficiently break harder objects, thereby improving the excavation efficiency, extending the service life, and facilitating replacement.

[0008] Preferably, the second knife assembly includes multiple groups of scrapers, which are axially installed at the front end of the cutter disc body between the roller cutter and the peripheral gauge cutter, and the front end of the scraper is set as wear-resistant carbide teeth; when the cutter disc body rotates, the scraper is driven to rotate to scrape and level the cutting surface, thereby improving work efficiency.

[0009] Preferably, an arc frame is connected between the side walls of adjacent plug-in boxes on the rear side wall of the cutter disc body, and a plurality of reinforcing beams are axially installed on the rear side wall of the cutter disc body, and the reinforcing beams are connected to the arc frame; the structural strength of the cutter disc body can be improved by the arc frame and the reinforcing beams, thereby improving the service life of the cutter disc body and reducing the later maintenance cost.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the cutter disc body can be positioned during use by the first knife assembly to ensure the moving direction of the cutter disc body; the outer edge of the tunnel can be cut by the second knife assembly; the roller cutter can be replaced easily by replacing the assembly, which improves the convenience during replacement and is convenient to use; the cutting surface can be scraped and leveled by the third knife assembly to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the axonometric structure of the utility model;

[0013] Figure 3 It is a front structural schematic diagram of the utility model;

[0014] Figure 4 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0015] Figure 5 It is a right side cross-sectional structural schematic diagram of the utility model;

[0016] Markings in the attached figure: 1. Cutter disc body; 2. Grouting hole; 3. Center positioning head; 4. Center scraper; 5. Insert box; 6. Cutter seat; 7. Limit plate; 8. Fixing stud; 9. Hob; 10. Peripheral gauge cutter; 11. Wear-resistant carbide gear sleeve; 12. Mounting seat; 13. Scraper; 14. Arc frame; 15. Reinforcement beam. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0018] like Figures 1 to 5 As shown, a plurality of grouting holes 2 are evenly provided on the cutter disc body 1, a center positioning head 3 is fixedly installed at the center position of the cutter disc body 1, a plurality of center scrapers 4 are evenly installed axially on the outer wall of the center positioning head 3, a mounting groove is axially provided on the cutter disc body 1 about the center positioning head 3, a plug-in box 5 is fixedly installed at the mounting groove at the rear end of the cutter disc body 1, a hob 9 is rotatably installed at the front end of a cutter seat 6, a limiting plate 7 is fixedly installed at the rear end of the cutter seat 6, the cutter seat 6 is inserted into the plug-in box 5, a fixing hole is provided on the plug-in box 5 and the cutter seat 6, a fixing stud 8 is inserted into the fixing hole to connect the plug-in box 5 and the cutter seat 6, and a plurality of The peripheral sizing cutter 10 is evenly installed axially at the front end of the cutter disc body 1, and the cutting direction of the peripheral sizing cutter 10 is set with a wear-resistant carbide tooth sleeve 11, and the wear-resistant carbide tooth sleeve 11 is fixedly connected to the peripheral sizing cutter 10 through a mounting seat 12. Multiple groups of scrapers 13 are axially installed at the front end of the cutter disc body 1 between the hob 9 and the peripheral sizing cutter 10, and the front end of the scraper 13 is set as a wear-resistant carbide tooth. An arc frame 14 is connected between the side walls of the adjacent plug-in boxes 5 on the rear side wall of the cutter disc body 1, and multiple reinforcement beams 15 are axially installed on the rear side wall of the cutter disc body 1, and the reinforcement beams 15 are connected to the arc frame 14;

[0019] When the cutter disc body 1 rotates, it drives the center positioning head 3 to align with the center position, and the center positioning head 3 drives the center scraper 4 to rotate to open a hole, so as to position the cutter disc body 1 and ensure the moving direction of the cutter disc body 1. When the roller cutter 9 needs to be replaced for cutting different rock formations, the fixing stud 8 is removed and taken out from the plug-in box 5 through the cutter seat 6, so as to facilitate the replacement of the matching roller cutter 9, improve the convenience during replacement, and help improve work efficiency. When the cutter disc body 1 rotates, it drives the peripheral gauge cutter 10 to rotate to cut the outer edge of the tunnel. The wear-resistant carbide tooth sleeve 11 can be used to efficiently break harder objects, improve the excavation efficiency, and extend the service life, which is convenient for replacement. When the cutter disc body 1 rotates, it drives the scraper 13 to rotate to scrape and level the cutting surface, thereby improving work efficiency. The arc frame 14 and the reinforcing beam 15 can improve the structural strength of the cutter disc body 1, thereby improving the service life of the cutter disc body 1 and reducing the later maintenance cost.

[0020] like Figures 1 to 5 As shown, the utility model is a shield cutter mechanism of a shield tunneling machine. When the cutter head body 1 rotates, it drives the center positioning head 3 to align with the center position. The center positioning head 3 drives the center scraper 4 to rotate to open a hole and position the cutter head body 1. When the cutter head body 1 rotates, it drives the peripheral gauge cutter 10 to rotate to cut the outer edge of the tunnel. The wear-resistant carbide tooth sleeve 11 can be used to efficiently break harder objects. At the same time, it drives the scraper 13 to rotate to scrape and level the cutting surface. When the roller cutter 9 needs to be replaced for cutting different rock formations, the fixing stud 8 is removed and taken out from the plug-in box 5 through the cutter seat 6, so as to facilitate the replacement of the matching roller cutter 9. The arc frame 14 and the reinforcing beam 15 can improve the structural strength of the cutter head body 1, thereby improving the service life of the cutter head body 1.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A shield cutterhead mechanism of a shield tunneling machine, characterized in that: The invention comprises a cutter disc body (1), wherein a plurality of grouting holes (2) are evenly arranged on the cutter disc body (1), a first cutter assembly is installed in the middle of the cutter disc body (1), a roller cutter (9) is installed in the middle of the cutter disc body (1) via a replacement assembly, a second cutter assembly is installed on the outer edge of the cutter disc body (1), and a third cutter assembly is installed between the first cutter assembly and the second cutter assembly.

2. A shield cutterhead mechanism for a shield tunneling machine as claimed in claim 1, characterized in that: The first knife assembly comprises a center positioning head (3) and a plurality of center scrapers (4); the center positioning head (3) is fixedly mounted at the center position of the knife disc body (1); and the plurality of center scrapers (4) are evenly mounted axially on the outer wall of the center positioning head (3).

3. A shield cutterhead mechanism for a shield tunneling machine as claimed in claim 1, characterized in that: The disassembly assembly comprises a plurality of plug-in boxes (5), a plurality of tool holders (6), a plurality of limit plates (7) and a plurality of fixing studs (8); a mounting groove is axially provided on the tool disc body (1) about the center positioning head (3); the plug-in box (5) is fixedly installed at the mounting groove at the rear end of the tool disc body (1); the hob (9) is rotatably installed at the front end of the tool holder (6); the limit plate (7) is fixedly installed at the rear end of the tool holder (6); the tool holder (6) is inserted into the plug-in box (5); fixing holes are provided on the plug-in box (5) and the tool holder (6); the fixing studs (8) are inserted into the fixing holes to connect the plug-in box (5) and the tool holder (6).

4. A shield cutterhead mechanism for a shield tunneling machine as claimed in claim 1, characterized in that: The second knife assembly comprises a plurality of peripheral gauge knives (10) and a plurality of wear-resistant carbide tooth sleeves (11); the plurality of peripheral gauge knives (10) are evenly mounted axially on the front end of the cutter disc body (1); the peripheral gauge knives (10) are sleeved with wear-resistant carbide tooth sleeves (11) in the cutting direction; the wear-resistant carbide tooth sleeves (11) are fixedly connected to the peripheral gauge knives (10) via a mounting seat (12).

5. A shield cutterhead mechanism for a shield tunneling machine as claimed in claim 4, characterized in that: The second knife assembly comprises a plurality of groups of scrapers (13), the plurality of groups of scrapers (13) being axially mounted at the front end of the cutter disc body (1) between the roller cutter (9) and the peripheral gauge cutter (10), the front ends of the scrapers (13) being configured as wear-resistant hard alloy teeth.

6. A shield cutterhead mechanism for a shield tunneling machine as claimed in claim 3, characterized in that: An arc frame (14) is connected between the side walls of adjacent insertion boxes (5) on the rear side wall of the cutter disc body (1), a plurality of reinforcing beams (15) are axially mounted on the rear side wall of the cutter disc body (1), and the reinforcing beams (15) are connected to the arc frame (14).

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