Shield cutter head capable of being assembled, detached and replaced

Abstract

The utility model belongs to the technical field of shield cutterheads, and particularly relates to a shield cutterhead capable of being assembled, detached and replaced, which comprises a main body, a panel arranged on the main body, spokes arranged on the main body close to the panel, scrapers arranged on the spokes, a steel grating arranged between the panel and the spokes, and a disc-shaped hob arranged on the edge of the panel. A heavy tearing knife mechanism is arranged on the panel, a center knife is arranged in the middle of the panel, a mounting groove is formed in the panel, and the heavy tearing knife mechanism comprises a tearing knife, a belleville spring, a limiting rod, a limiting disc, a cross beam, a driving rod, a locking nut, an annular groove, a cross rod and a spiral thread. Through the heavy tearing knife mechanism, the belleville spring, the limiting rod, the limiting disc, the driving rod, the locking nut, the annular groove, the transverse rod and the mounting groove, the heavy tearing knife mechanism can be conveniently and rapidly mounted, correspondingly, the dismounting process can be rapidly carried out, it is guaranteed that the heavy tearing knife mechanism is stably mounted, and the heavy tearing knife mechanism is prevented from being loosened.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel cutterhead technology, specifically to an assembleable and replaceable shield tunnel cutterhead. Background Technology

[0002] The cutterhead is the core component of a tunnel boring machine (TBM). It is responsible for cutting and breaking the strata (such as soil and rock) during tunnel excavation and transporting the excavated soil to the rear. It is an important mechanism in the tunnel construction process.

[0003] The existing technology has the following shortcomings: Application No. 202121345482.6 proposes a shield cutterhead with an assembleable and replaceable design, including a main cutterhead base with an extension seat. The extension seat has an inverted convex slot inside, and each extension seat has three fixing screw holes. An inverted convex elongated extension rod is provided in the slot, and multiple screw holes are provided on the extension rod. A fan-shaped secondary cutterhead is placed between two adjacent extension rods. The fan-shaped secondary cutterhead has corresponding convex latches at both ends of the extension rod. A fixing plate is provided at the connection between the extension rod and the secondary cutterhead, and a fixing cap is provided at the end of the extension rod. This utility model mainly solves the problems of shield machine cutterheads being large, difficult to maintain, having a limited scope of application, and difficult to transport, providing convenience for construction, transportation, maintenance, and the assembly of cutterheads of various sizes.

[0004] The ease of disassembly and replacement of the above-mentioned equipment only applies to the secondary cutter head. However, the ease of disassembly and replacement of the original cutter assembly structure on the cutter head can be further improved. At the same time, after the cutter assembly is installed, the installation position will wear down to varying degrees with the increase of usage time, resulting in loosening and affecting the installation stability of the cutter assembly. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides an assembleable and replaceable shield cutterhead to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an assembleable and replaceable shield cutterhead, comprising a main body, a panel on the main body, spokes on the main body near the panel, scrapers on the spokes, a steel grid between the panel and the spokes, disc-shaped rollers on the edge of the panel, a heavy-duty tearing blade mechanism on the panel, a central blade in the center of the panel, and a mounting groove on the panel;

[0007] The heavy-duty ripping knife mechanism includes a ripping knife, disc springs, a limiting rod, a limiting disc, a crossbeam, a drive rod, a locking nut, an annular groove, a crossbar, and a spiral pattern. Disc springs are provided on both sides of the heavy-duty ripping knife mechanism, and a limiting rod is inserted into the disc springs. A limiting disc is provided on the top of the limiting rod. A crossbeam is provided inside the heavy-duty ripping knife mechanism. A drive rod is provided on the outside of the heavy-duty ripping knife mechanism, and a locking nut is provided on the drive rod. Annular grooves are formed on the inner and outer sides of the limiting rod. A crossbar is provided on the outside of the drive rod, and a spiral pattern is provided on the drive rod.

[0008] As a preferred technical solution of this utility model: the spokes and the panel are integrally formed, the scraper is fixedly installed on both sides of the spokes, and the disc-shaped roller is rotatably installed on the panel and there are several sets of them.

[0009] As a preferred technical solution of this utility model: the central blade is fixedly installed at the center of the panel, and there are several sets of mounting slots, which are adapted to the heavy-duty tearing blade mechanism.

[0010] As a preferred technical solution of this utility model: the limiting disc is fixedly installed on the top of the limiting rod, the limiting rod passes through the disc spring and extends into the heavy-duty tearing knife mechanism, and the limiting rod passes through the crossbeam.

[0011] As a preferred technical solution of this utility model: there are six groups of disc springs distributed at the upper and lower ends of the heavy-duty tearing knife mechanism, and the mounting mechanism of each group of disc springs is the same. The mounting groove is provided with a limiting hole that matches the limiting rod.

[0012] As a preferred technical solution of this utility model: one end of the drive rod extends into the heavy-duty tearing knife mechanism, and the other end of the drive rod is rotatably connected to the inner wall of the heavy-duty tearing knife mechanism.

[0013] As a preferred technical solution of this utility model: the annular groove and the crossbar fit together, and there is a threaded connection between the spiral pattern and the locking nut.

[0014] Compared with the prior art, this utility model provides an assembleable and replaceable shield cutterhead, which has the following advantages:

[0015] 1. This type of assembleable and replaceable shield cutterhead, by setting up a heavy-duty tearing cutter mechanism, a disc spring, a limiting rod, a limiting plate, a drive rod, a locking nut, an annular groove, a crossbar, and a mounting groove, rotates the drive rod to drive the limiting rod down while the limiting plate presses on the disc spring, compressing the disc spring. Rotating the locking nut to press it against the outside of the heavy-duty tearing cutter mechanism restricts the rotation of the drive rod, thus embedding the heavy-duty tearing cutter mechanism into the mounting groove. Loosening the locking nut and rotating the drive rod in the opposite direction causes the limiting rod to extend and insert into the corresponding limiting hole in the mounting groove. The disc spring rests between the mounting groove and the heavy-duty tearing cutter mechanism, allowing for convenient installation of the heavy-duty tearing cutter mechanism and quick disassembly.

[0016] 2. This type of assembleable and replaceable shield cutterhead is equipped with a disc spring, a limit rod, a drive rod, a locking nut, an annular groove, and a crossbar. The limit rod restricts the position of the heavy-duty tearing cutter mechanism, while the disc spring continuously provides a tightening force to ensure the stable installation of the heavy-duty tearing cutter mechanism and prevent the heavy-duty tearing cutter mechanism from loosening. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation of the heavy-duty tearing blade of this utility model;

[0019] Figure 3 This is a schematic diagram of the heavy-duty tearing knife mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting rod and driving rod structure of this utility model.

[0021] In the diagram: 1. Main body; 2. Panel; 3. Spokes; 4. Scraper; 5. Steel grating; 6. Disc cutter; 7. Heavy-duty tearing knife mechanism; 701. Tearing knife; 702. Disc spring; 703. Limiting rod; 704. Limiting disc; 705. Crossbeam; 706. Drive rod; 707. Locking nut; 708. Ring groove; 709. Crossbar; 7010. Spiral pattern; 8. Center knife; 9. Mounting slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4In this embodiment: a detachable and assembleable shield cutterhead includes a main body 1, a panel 2 on the main body 1, spokes 3 on the main body 1 near the panel 2, scrapers 4 on the spokes 3, a steel grid 5 between the panel 2 and the spokes 3, disc-shaped roller cutters 6 on the edge of the panel 2, a heavy-duty tearing knife mechanism 7 on the panel 2, a central knife 8 in the middle of the panel 2, and an installation groove 9 on the panel 2;

[0024] The mounting slot 9 facilitates the installation of the heavy-duty tearing knife mechanism 7, and the steel grating 5 ensures the stability between the panel 2 and the spokes 3.

[0025] The heavy-duty ripping knife mechanism 7 includes a ripping knife 701, a disc spring 702, a limiting rod 703, a limiting disc 704, a crossbeam 705, a drive rod 706, a locking nut 707, an annular groove 708, a crossbar 709, and a spiral pattern 7010. Disc springs 702 are provided on both sides of the heavy-duty ripping knife mechanism 7, and a limiting rod 703 is inserted into the disc springs 702. A limiting disc 704 is provided on the top of the limiting rod 703. A crossbeam 705 is provided inside the heavy-duty ripping knife mechanism 7. A drive rod 706 is provided on the outside of the heavy-duty ripping knife mechanism 7. A locking nut 707 is provided on the drive rod 706. Annular grooves 708 are opened on the inner and outer sides of the limiting rod 703. A crossbar 709 is provided on the outside of the drive rod 706. A spiral pattern 7010 is provided on the drive rod 706.

[0026] By tightening the locking nut 707, the rotation of the drive rod 706 can be restricted by pressing the locking nut 707 against the heavy-duty tearing knife mechanism 7. The locking nut 707 and the drive rod 706 can be threaded together by the helical thread 7010.

[0027] In this embodiment, the spokes 3 and the panel 2 are integrally formed. The scraper 4 is fixedly installed on both sides of the spokes 3. The disc-shaped roller 6 is rotatably installed on the panel 2 and there are several sets of them. The center blade 8 is fixedly installed at the center of the panel 2. There are several sets of the mounting grooves 9. The mounting grooves 9 are adapted to the heavy-duty tearing blade mechanism 7. The limiting disc 704 is fixedly installed on the top of the limiting rod 703. The limiting rod 703 passes through the disc spring 702 and extends into the heavy-duty tearing blade mechanism 7. The limiting rod 703 passes through the crossbeam 705.

[0028] Specifically, the scraper 4, disc cutter 6, and heavy-duty tearing cutter mechanism 7 play a major role in cutting and breaking the strata during tunnel excavation, while the crossbeam 705 ensures the stability of the limit rod 703 and prevents it from shaking.

[0029] In this embodiment, there are six sets of disc springs 702 distributed at the upper and lower ends of the heavy-duty ripping knife mechanism 7. The mounting mechanism of each set of disc springs 702 is the same. The mounting groove 9 is provided with a limiting hole that matches the limiting rod 703. One end of the drive rod 706 extends into the heavy-duty ripping knife mechanism 7, and the other end of the drive rod 706 is rotatably connected to the inner wall of the heavy-duty ripping knife mechanism 7. The annular groove 708 and the crossbar 709 fit together. There is a threaded connection between the spiral 7010 and the locking nut 707.

[0030] Specifically, the disc spring 702 continuously provides a clamping force to ensure the stable installation of the heavy-duty tearing knife mechanism 7, and the engagement of the annular groove 708 with the crossbar 709 facilitates the movement of the drive rod 706 and the limit rod 703.

[0031] The working principle and usage process of this utility model are as follows: In actual use, when installing the heavy-duty ripping knife mechanism 7, the drive rod 706 at the upper end of the heavy-duty ripping knife mechanism 7 is rotated counterclockwise, while the drive rod 706 at the lower end of the heavy-duty ripping knife mechanism 7 rotates clockwise. Because the crossbar 709 and the annular groove 708 mutually restrict each other, the drive rod 706 will drive the limit rod 703 to descend, and at the same time, the limiting disc 704 will press on the disc spring 702. The disc spring 702 will be compressed by force. At this time, the locking nut 707 is rotated to make it fit tightly against the outside of the heavy-duty ripping knife mechanism 7, which can restrict the rotation of the drive rod 706. At this time, the heavy-duty ripping knife mechanism 7 is embedded in the mounting groove 9. Simultaneously loosen the locking nut 707 and rotate the drive rod 706 in the opposite direction, causing the limiting rod 703 to extend and insert into the corresponding limiting hole in the mounting groove 9. At this time, the disc spring 702 is no longer compressed and rests between the mounting groove 9 and the heavy-duty ripping knife mechanism 7. Finally, rotate the locking nut 707 again to make it fit tightly against the outside of the heavy-duty ripping knife mechanism 7. The heavy-duty ripping knife mechanism 7 can be installed easily, and the disassembly process can be carried out quickly. The limiting rod 703 restricts the position of the heavy-duty ripping knife mechanism 7, while the disc spring 702 continuously provides a tightening force to ensure the stable installation of the heavy-duty ripping knife mechanism 7 and prevent the heavy-duty ripping knife mechanism 7 from loosening.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A replaceable and assembleable shield cutterhead, comprising a main body (1), a panel (2) disposed on the main body (1), spokes (3) disposed on the main body (1) near the panel (2), scrapers (4) disposed on the spokes (3), and a steel grating (5) disposed between the panel (2) and the spokes (3), characterized in that: The panel (2) is provided with a disc-shaped roller cutter (6) at its edge, a heavy-duty tearing knife mechanism (7) is provided on the panel (2), a central knife (8) is provided in the middle of the panel (2), and a mounting groove (9) is provided on the panel (2). The heavy-duty ripping knife mechanism (7) includes a ripping knife (701), a disc spring (702), a limiting rod (703), a limiting disc (704), a crossbeam (705), a drive rod (706), a locking nut (707), an annular groove (708), a crossbar (709), and a spiral pattern (7010). Disc springs (702) are provided on both sides of the heavy-duty ripping knife mechanism (7). A limiting rod (703) is inserted into each disc spring (702). 703) A limiting disc (704) is provided at the top, a crossbeam (705) is provided inside the heavy-duty tearing knife mechanism (7), a drive rod (706) is provided on the outside of the heavy-duty tearing knife mechanism (7), a locking nut (707) is provided on the drive rod (706), annular grooves (708) are provided on the inner and outer sides of the limiting rod (703), a crossbar (709) is provided on the outside of the drive rod (706), and a spiral pattern (7010) is provided on the drive rod (706).

2. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: The spokes (3) and the panel (2) are integrally formed. The scraper (4) is fixedly installed on both sides of the spokes (3). The disc-shaped roller (6) is rotatably installed on the panel (2) and there are several sets of them.

3. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: The central blade (8) is fixedly installed at the center of the panel (2). There are several sets of mounting slots (9), and the mounting slots (9) are adapted to the heavy-duty tearing blade mechanism (7).

4. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: The limiting disc (704) is fixedly installed on the top of the limiting rod (703), the limiting rod (703) passes through the disc spring (702) and extends into the heavy-duty tearing knife mechanism (7), and the limiting rod (703) passes through the crossbeam (705).

5. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: There are six sets of disc springs (702) distributed at the upper and lower ends of the heavy-duty tearing knife mechanism (7). The mounting mechanism of each set of disc springs (702) is the same. The mounting groove (9) is provided with a limiting hole that matches the limiting rod (703).

6. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: One end of the drive rod (706) extends into the heavy-duty tearing knife mechanism (7), and the other end of the drive rod (706) is rotatably connected to the inner wall of the heavy-duty tearing knife mechanism (7).

7. The assembleable and replaceable shield cutterhead according to claim 1, characterized in that: The annular groove (708) fits into the crossbar (709), and the spiral pattern (7010) has a threaded connection with the locking nut (707).

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