Rolling and scraping separation type shield tunneling machine cutterhead

Abstract

Compared with the prior art, the rolling and scraping separation type shield tunneling machine cutterhead comprises a cutterhead main body, the cutterhead main spokes are arranged on the cutterhead main body; the cutterhead auxiliary spokes are arranged on the cutterhead main body; the hob structure is arranged on the main spokes of the cutterhead; the scraper structure is arranged on the auxiliary spokes of the cutterhead; the cutter head main spokes and the cutter head auxiliary spokes are arranged around the center of the cutter head body in an array mode. And the cutter head main spokes and the cutter head auxiliary spokes are arranged at intervals. Compared with the prior art, the rolling and scraping separation type shield tunneling machine cutterhead disclosed by the utility model has the advantages that the arrangement mode and number of the cutters can be flexibly selected according to the formation conditions in the cutter mounting mode and arrangement mode of the rolling and scraping separation type shield tunneling machine cutterhead, so that the service life of the hobbing cutter is prolonged, the excavation efficiency of the cutterhead is improved, and the service life of the cutterhead is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machine cutter heads, and more specifically, particularly to a roller-scraping separation shield machine cutter head. Background Art

[0002] The shield machine is a modern heavy engineering equipment specially used for urban tunnel construction. The shield cutterhead is located at the front end of the shield machine. It is an important component that directly contacts the tunnel face and cuts the soil. It is the core of the equipment and plays a role in stabilizing the tunnel face and excavating the soil during the tunnel construction process.

[0003] According to the service life of the shield machine, a shield machine generally has to face various complex and diverse strata, and even in the same project and the same face, it has to face composite strata that are both hard and soft. This requires the shield machine cutterhead to have the function of dealing with both hard rock and soft soil, and the requirements of hard rock and soft soil strata for the cutterhead are completely different. Hard rock requires the cutterhead to be equipped with a roller cutter, and the roller cutter must be able to rotate with the chip force when the cutterhead rotates, otherwise the roller cutter is very likely to be worn and damaged. Soft soil requires the cutterhead to be equipped with a scraper to scrape the soft soil off the face, but the soft soil is very easy to take root around the scraper and produce mud cakes. The technical problem with the current shield machine cutterhead is that the mud cake produced around the scraper is very easy to wrap around the roller cutter, resulting in low operating efficiency or even failure to work normally.

[0004] Therefore, how to provide a roller-scraper separation shield machine cutterhead that can prevent the mud clumps or mud cakes generated when the scraper cuts the soil from affecting the working efficiency of the roller cutter has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a roller-scraper separation shield machine cutterhead, which can prevent the mud balls generated by the scraper from affecting the work of the roller cutter, thereby improving the excavation efficiency and service life of the cutterhead.

[0006] The technical solution adopted by the utility model is:

[0007] The utility model provides a roller-scraping separation shield machine cutterhead, comprising: a cutterhead main body; cutterhead main spokes arranged on the cutterhead main body; cutterhead secondary spokes arranged on the cutterhead main body; a roller cutter structure arranged on the cutterhead main spokes; a scraper structure arranged on the cutterhead secondary spokes; the cutterhead main spokes and the cutterhead secondary spokes are arranged in an array around the center of the cutterhead main body; the cutterhead main spokes and the cutterhead secondary spokes are arranged at intervals from each other.

[0008] Furthermore, in a preferred embodiment of the utility model, the scraper structures on adjacent blade disc sub-spokes are arranged in staggered positions; or the scraper structures on each or any one of the blade disc sub-spokes are fully arranged.

[0009] Furthermore, a wear-resistant block is arranged on the secondary spokes of the blade disc, and the wear-resistant block is located on one side of the scraper structure.

[0010] Furthermore, the wear-resistant block is a steel plate.

[0011] Furthermore, in a preferred embodiment of the present invention, the main spokes of the cutter disc are provided with a cutter box; and the hob structure is detachably fixedly mounted on the cutter box.

[0012] Furthermore, the tool box is fixedly welded to the main spokes of the cutter disc; the hob structure wedge and bolts are detachably fixedly mounted on the tool box.

[0013] Furthermore, in a preferred embodiment of the utility model, a knife seat is provided on the knife disc secondary spokes; and the scraper structure is detachably provided on the knife seat.

[0014] Furthermore, the blade seat is fixedly welded to the blade disc secondary spokes; and the scraper structure is mounted on the blade seat via a bolt structure.

[0015] Furthermore, a hydraulic channel is provided in the scraper structure; the hydraulic channel is located 3-20 mm below the scraper alloy of the scraper structure.

[0016] Furthermore, in a preferred embodiment of the present invention, the roller cutter structure in the cutter head of the roller-scraping separation shield machine can be replaced by a tearing cutter structure.

[0017] The utility model provides a roller-scraping separation shield machine cutterhead, which, compared with the prior art, comprises: a cutterhead main body; cutterhead main spokes arranged on the cutterhead main body; cutterhead secondary spokes arranged on the cutterhead main body; a roller cutter structure arranged on the cutterhead main spokes; a scraper structure arranged on the cutterhead secondary spokes; the cutterhead main spokes and the cutterhead secondary spokes are arranged in an array around the center of the cutterhead main body; the cutterhead main spokes and the cutterhead secondary spokes are spaced apart from each other. Therefore, compared with the prior art, the technical solution involved in the utility model does not affect the rotation of the roller cutter in the mud cake produced by the scraper, thereby ensuring work efficiency, improving the life of the roller cutter, and further improving the service life of the cutterhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the rolling and scraping separation type cutter disc involved in the embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the arrangement scheme of the scraper on the secondary spoke involved in the embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the alternate arrangement of different scrapers on the secondary spokes involved in the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the full scraper arrangement of the scraper on the secondary spoke involved in the embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the wear-resistant solution of the back of the secondary spoke scraper involved in the embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the formation of unseparated mud cake by rolling and scraping in the prior art;

[0025] Figure 7 for Figure 6 Side view of

[0026] Figure 8 It is a schematic diagram of the formation of mud cake after rolling and scraping separation involved in the embodiment of the utility model;

[0027] Fig. 9 for Figure 8 Side view of. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Please Figures 1 to 9As shown, the embodiment of the utility model provides a cutterhead of a roller-scraping separation shield machine, comprising: a cutterhead body 1; a cutterhead main spoke 2 arranged on the cutterhead body 1, the cutterhead main spoke 2 is relatively wide; a cutterhead secondary spoke 3 arranged on the cutterhead body 1 is narrower than the cutterhead main spoke 2; a roller cutter structure 4 arranged on the cutterhead main spoke 2 is arranged on the cutterhead main spoke 2 because it requires a large load to break rocks, and the cutterhead main spoke 2 is relatively wide, which is convenient for applying force; a scraper structure 5 arranged on the cutterhead secondary spoke 2 is at a certain distance from the roller cutter; the cutterhead main spoke 2 and the cutterhead secondary spoke 3 are arranged around the central array of the cutterhead body 1; the cutterhead main spoke 2 and the cutterhead secondary spoke 3 are arranged at intervals from each other, so the roller cutter structure 4 and the scraper structure 5 are also arranged around the central array of the cutterhead body 1, and are arranged at intervals from each other. It should be noted that in the embodiment of the utility model, the tool box and the tool holder refer to tool storage and fixing equipment.

[0030] Specifically, in the embodiment of the utility model, the scraper structures 5 on adjacent blade disc secondary spokes 3 are arranged in staggered positions; or the scraper structures 5 on each or any one of the blade disc secondary spokes 3 are fully arranged.

[0031] Specifically, in the embodiment of the utility model, the main spoke 2 of the cutter disc is provided with a cutter box. The purpose of providing the cutter box is to facilitate the disassembly and replacement of the hob structure. The hob structure 4 is detachably fixedly mounted on the cutter box, so that when replacement is required, it is not necessary to disassemble the cutter disc body for replacement.

[0032] More specifically, the knife box is fixedly welded to the main spokes 2 of the cutter disc, so the knife box cannot be disassembled, and the wedge block and bolts of the hob structure 4 are detachably fixedly installed on the knife box.

[0033] Specifically, in the embodiment of the utility model, a knife seat is provided on the knife disc secondary spoke 3, and the scraper structure 5 is detachably provided on the knife seat. The knife seat is fixedly welded to the knife disc secondary spoke 3, and the scraper structure 5 is installed on the knife seat by a bolt structure.

[0034] It should be noted that, in the embodiment of the present invention, the distance between the scraper structure 5 on different cutter disc spokes 3 and the cutter disc center should ensure that the entire excavation surface can be covered. When necessary, the scraper can be spread over the entire cutter disc spoke 3. Similarly, when necessary, the scrapers on different secondary spokes can also be set to different layout types.

[0035] Specifically, in the embodiment of the utility model, the wear-resistant block 6 is arranged on the blade sub-spoke 3, and the wear-resistant block 6 is located on one side of the scraper structure 5. The debris on the back of the tool may cause wear to the structure or the tool, and even the accumulation of debris may cause an outward extrusion force on the tool, thereby causing the tool to fall off.

[0036] As described above, in the embodiment of the utility model, the wear-resistant block 6 is welded to the cutter disc secondary shaft 3, which reduces wear and protects the secondary spoke main structure on the one hand, and prevents the accumulation of debris on the back of the cutter on the other hand.

[0037] It should be noted that, in the embodiment of the utility model, considering the installation position and characteristics of the wear-resistant block 6, the material of the wear-resistant block 6 is a steel plate, and this material can be replaced accordingly on the basis of meeting the installation position and wear-resistant characteristics.

[0038] Specifically, in the embodiment of the utility model, a hydraulic channel is provided in the scraper structure 5 ; the hydraulic channel is located 3-20 mm below the scraper alloy of the scraper structure 5 .

[0039] More specifically, the hydraulic channel is located 5 to 18 mm below the scraper alloy of the scraper structure 5 and is used to adjust and control the position and pressure of the scraper structure.

[0040] It should be noted that in the embodiment of the utility model, the hydraulic channel is located 5 to 18 mm below the scraper alloy of the scraper structure 5. After the hydraulic channel is set, the operator can indirectly grasp the wear condition of the cutter disc tool when he cannot directly see the palm face and the tool status.

[0041] Specifically, in the embodiment of the utility model, the hob structure 4 can be replaced with a tearing knife structure according to actual needs. It should be noted that the hob structure 4 in the embodiment of the utility model can always be replaced with other structures including the tearing knife structure that are suitable for the current situation.

[0042] More specifically, the cutter head of the roller-scraping separation shield machine provided in this embodiment forms a mud cake 7 during use, as shown in FIG. Figure 7 As shown, this can avoid Figure 6The mud cake generated around the scraper wraps around the roller cutter, resulting in low operating efficiency or even failure to work normally, thereby affecting the construction progress and the life of the roller cutter structure 4. As described above, the roller-scraping separation shield machine cutter head provided by the utility model can overcome the above-mentioned technical defects. Compared with the prior art, it can extend the service life of the roller cutter structure 4 and significantly improve the excavation efficiency and service life of the cutter head. Its beneficial effects are as follows: after adopting the roller-scraping separation shield machine cutter head of the present invention, the shield machine can flexibly select the arrangement and quantity of the cutters according to the formation conditions, such as selecting roller cutters and their quantity for hard rock formations, selecting scrapers for soft soil formations, and installing a detachable tearing knife on the roller cutter box; the scraper is positioned away from the roller cutter, and the mud balls or mud cakes generated when the scraper cuts the soil will not affect the roller cutter, nor will they wrap the roller cutter to cause the roller cutter to be unable to rotate, thereby extending the service life of the roller cutter, thereby improving the excavation efficiency and service life of the cutter head; when the operator cannot directly see the face and the status of the cutter, the wear condition of the cutter head and the cutter can be indirectly grasped.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roller-scraping separation shield machine cutterhead, characterized in that: include: A cutter head body (1); A cutter disc main spoke (2) arranged on the cutter disc main body (1); A blade disc secondary spoke (3) arranged on the blade disc main body (1); A hob structure (4) arranged on the main spokes (2) of the cutter disc; A scraper structure (5) arranged on the blade disc secondary spoke (3); The blade disc main spokes (2) and the blade disc secondary spokes (3) are arranged in an array around the center of the blade disc body (1); the blade disc main spokes (2) and the blade disc secondary spokes (3) are arranged at intervals from each other.

2. The cutter head of the roller-scraping separation shield machine according to claim 1 is characterized in that: The scraper structures (5) on adjacent blade disc secondary spokes (3) are arranged in a staggered manner; or the scraper structures (5) on each or any one of the blade disc secondary spokes (3) are arranged in a full-coverage manner.

3. The cutter head of the roller-scraping separation shield machine according to claim 2 is characterized in that: Also includes: A wear-resistant block (6) is arranged on the blade disc secondary spoke (3), and the wear-resistant block (6) is located on one side of the scraper structure (5).

4. The cutter head of the roller-scraping separation shield machine according to claim 3 is characterized in that: The wear-resistant block (6) is made of steel plate.

5. The cutter head of a roller-scraping separation shield machine according to any one of claims 1 to 4, characterized in that: The main spokes (2) of the cutter disc are provided with a cutter box; The hob structure (4) is detachably fixedly mounted on the cutter box.

6. The cutter head of the roller-scraping separation shield machine according to claim 5 is characterized in that: The knife box is fixedly welded to the main spokes (2) of the knife disc; The wedge block and bolts of the hob structure (4) are detachably fixedly mounted on the cutter box.

7. The cutter head of a roller-scraping separation shield machine according to any one of claims 1 to 4, characterized in that: A knife seat is arranged on the knife disc secondary spoke (3); The scraper structure (5) can be detachably mounted on the blade seat.

8. The cutter head of the roller-scraping separation shield machine according to claim 7 is characterized in that: The blade seat is fixedly welded to the blade disc secondary spoke (3); The scraper structure (5) is mounted on the blade seat via a bolt structure.

9. The cutter head of a roller-scraping separation shield machine according to any one of claims 1 to 4, characterized in that: A hydraulic channel is provided in the scraper structure (5); the hydraulic channel is located 3-20 mm below the scraper alloy of the scraper structure (5).

10. A roller-scraping separation shield machine cutterhead, characterized in that: The roller cutter structure (4) in the cutter head of the roller-scraping separation shield machine described in any one of claims 1 to 9 is replaced with a tearing knife structure.

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