Advanced crushing device for shield cutter head

Abstract

The utility model discloses a shield cutter head advanced crushing device which comprises a cutter head body, a groove is formed in the cutter head body, a guide sleeve is fixed in the groove, a mounting seat is arranged in the guide sleeve, a motor is arranged in the mounting seat, the mounting seat is connected with the output end of a hydraulic oil cylinder through a first connecting seat, and the hydraulic oil cylinder is connected with a second connecting seat. Due to the fact that the telescopic drill bit device is arranged, when a hard rock is encountered, the cutterhead stops rotating, the drill bit extends out and rotates, the rock is broken, and then the cutterhead continues to rotate to cut the rock. The cutterhead can rotate to different angles, so that the drill bit reaches different positions to crush hard rocks, and the cutters cut the rocks after crushing the hard rocks, so that the design not only can reduce the loss of common cutters, but also can improve the speed of cutting the rocks by the cutterhead and improve the construction efficiency of the shield tunneling machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field, specifically, relate to a shield cutterhead advance crushing device. BACKGROUND

[0002] With the rapid development of social science and technology, the demand for the use of underground space is increasing. Whether it is the construction of urban subway, the promotion of tunnel engineering, or the laying of underground pipeline, efficient underground excavation equipment is indispensable. Therefore, as an important underground tunneling equipment, the market demand of shield machine is also gradually expanding. At the same time, people's requirements for the construction efficiency of shield machine are also getting higher and higher, and it is expected to complete more work in a shorter time.

[0003] In the process of shield machine tunneling, some special geological conditions such as boulders, rocks and other hard objects are often encountered. These hard objects often bring great challenges to ordinary cutters (such as shell cutters). Because their hardness is much higher than that of general soil and rock, ordinary cutters will face great resistance when cutting these hard objects, resulting in cutting difficulty. Moreover, long-term high-intensity cutting will also accelerate the wear of cutters, and even may cause cutter damage, seriously affecting the construction progress and efficiency.

[0004] In view of the problems in the related art, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems in the related art, the utility model provides a shield cutterhead advance crushing device to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the following specific technical solutions:

[0007] A shield cutterhead advance crushing device, comprising a cutterhead body, a recess is arranged inside the cutterhead body, a guide sleeve is fixed inside the recess, a mounting seat is arranged inside the guide sleeve, a motor is arranged inside the mounting seat, the mounting seat is connected with the output end of a hydraulic oil cylinder through a first connecting seat, the hydraulic oil cylinder is connected with a second connecting seat, the number of the hydraulic oil cylinders is two, and the output end of the motor is connected with a drill bit.

[0008] Further, the second connecting seat is connected with a mounting plate, the mounting plate is fixedly connected with the guide sleeve, and the mounting plate is connected with the drill bit.

[0009] Further, a through hole is arranged on the mounting plate, and a first bearing is arranged inside the through hole.

[0010] Further, the drill bit is connected with the mounting seat through a second bearing.

[0011] Furthermore, sliders are provided on both sides of the mounting seat, and a slide groove is provided inside the guide sleeve, and the sliders match the slide groove.

[0012] Furthermore, an annular groove is provided on the mounting seat, and a phase change material layer is provided inside the annular groove.

[0013] Furthermore, a sealing cover is provided at the rear end of the annular groove, a sealing gasket is provided on the inner side of the sealing cover, and the sealing cover is connected to the mounting seat through a first bolt.

[0014] Furthermore, a sealing flange is provided at the rear end of the mounting seat, and the sealing flange is connected to the cutter head body through a second bolt.

[0015] Furthermore, the phase change material layer is made of paraffin.

[0016] Furthermore, there are multiple grooves.

[0017] The beneficial effects of the utility model are:

[0018] (1) By setting up a retractable drill bit device, when encountering hard rock, the cutterhead stops rotating, the drill bit extends and rotates, and after breaking the rock, the cutterhead continues to rotate and cut the rock. The cutterhead can rotate to different angles, so that the drill bit reaches different positions for breaking. After breaking the hard rock, the cutterhead can continue cutting. This design can not only reduce the wear of ordinary cutters, but also increase the speed of the cutterhead in cutting rock, thereby improving the construction efficiency of the shield machine.

[0019] (2) By placing a phase change material layer inside the annular groove inside the mounting base, it can absorb excess heat when the motor is working, preventing the motor from overheating, thereby improving the working efficiency and life of the motor. At the same time, this can also extend the continuous working time of the shield machine and improve the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a front view of a shield cutterhead advance crushing device according to an embodiment of the utility model;

[0022] Figure 2 This is a rear view of a shield cutterhead advance crushing device according to an embodiment of the present utility model;

[0023] Figure 3This is a diagram showing the internal structure of a cutterhead body of a shield cutterhead advance crushing device according to an embodiment of the present utility model;

[0024] Figure 4 This is a diagram of the internal structure of a guide sleeve of a shield cutterhead advance crushing device according to an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Cutter body; 2. Groove; 3. Guide sleeve; 4. Mounting seat; 5. Motor; 6. First connecting seat; 7. Hydraulic cylinder; 8. Second connecting seat; 9. Drill bit; 10. Mounting plate; 11. Through hole; 12. First bearing; 13. Second bearing; 14. Slider; 15. Slide; 16. Annular groove; 17. Phase change material layer; 18. Sealing cover; 19. Sealing gasket; 20. First bolt; 21. Sealing flange; 22. Second bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] According to an embodiment of the present utility model, a shield cutterhead advance crushing device is provided.

[0029] Example 1

[0030] like Figures 1-4As shown, according to the shield cutterhead advance crushing device of the embodiment of the present invention, it includes a cutterhead body 1, a groove 2 is provided inside the cutterhead body 1, the number of grooves 2 is multiple, and gravel at different positions can be crushed, a guide sleeve 3 is fixed inside the groove 2, a mounting seat 4 is provided inside the guide sleeve 3, a motor 5 is provided inside the mounting seat 4, the mounting seat 4 is connected to the output end of the hydraulic cylinder 7 through the first connecting seat 6, the hydraulic cylinder 7 is connected to the second connecting seat 8, the number of hydraulic cylinders 7 is two, the output end of the motor 5 is connected to the drill bit 9, and the second connecting seat 8 is connected to the mounting plate 1 0 is connected, the mounting plate 10 is fixedly connected to the guide sleeve 3, and the mounting plate 10 is connected to the drill bit 9 through it. The mounting plate 10 is provided with a through hole 11, and a first bearing 12 is located inside the through hole 11. The drill bit 9 is connected to the mounting seat 4 via a second bearing 13. Sliders 14 are provided on both sides of the mounting seat 4, and a slide groove 15 is provided inside the guide sleeve 3. The slides 14 and the slide groove 15 match each other. The provision of the slides 14 and the slide groove 15 ensures the stability of the movement of the guide sleeve 3. The rear end of the mounting seat 4 is provided with a sealing flange 21, which is connected to the cutter head body 1 via a second bolt 22. According to the above scheme, when it is necessary to crush hard rock, the motor 5 is started to drive the drill bit 9 to rotate, and then the hydraulic cylinder 7 is activated to drive the mounting seat 4 to move inside the guide sleeve 3, allowing the drill bit 9 to rotate and move forward. The drill bit 9 extends from the through hole 11 in the cutter head body 1 and can crush the hard rock in front of the cutter head body 1. After the drill bit 9 is retracted, the cutter head body 1 can be rotated a certain angle according to the position of the hard rock, and the drill bit 9 is extended again to break it, and then the drill bit 9 is retracted. After the rock is broken, when the cutter head body 1 rotates, the broken rock has less resistance to the cutter head, allowing the tool to cut the rock faster.

[0031] like Figures 1-4 As shown, the mounting base 4 is provided with an annular groove 16, within which is disposed a phase change material layer 17 made of paraffin wax. A sealing cap 18 is disposed at the rear end of the annular groove 16, with a sealing gasket 19 disposed within the inner portion of the sealing cap 18. The sealing cap 18 is connected to the mounting base 4 via a first bolt 20. Through the above arrangement, the phase change material layer 17 is disposed within the mounting base 4. The phase change material is a material capable of absorbing or releasing a large amount of latent heat within a specific temperature range. When the motor 5 generates heat during operation, the phase change material absorbs this heat and undergoes a phase change, thereby preventing the motor 5 from overheating and maintaining its operating temperature within a reasonable range. This prevents the motor 5 from experiencing performance degradation or damage due to overheating, thereby improving its operating efficiency and lifespan. The phase change material layer 17 is sealed by the sealing cover 18 and the sealing gasket 19 to prevent leakage of the phase change material layer 17 when the phase change occurs.

[0032] In summary, with the aid of the above-mentioned technical solution of the present invention, by setting up a retractable drill bit 9 device, when encountering hard rock, the cutter disc stops rotating, the drill bit 9 extends and rotates, and after breaking the rock, the cutter disc continues to rotate and cut the rock. The cutter disc can be rotated to different angles, so that the drill bit 9 reaches different positions for crushing. After breaking the hard rock, the tool can continue to cut. This design can not only reduce the loss of ordinary tools, but also increase the speed of the cutter disc in cutting rocks, improve the construction efficiency of the shield machine, and by placing a phase change material layer 17 inside the annular groove 16 inside the mounting seat 4, it can absorb excess heat when the motor 5 is working, prevent the motor 5 from overheating, and thus improve the working efficiency and life of the motor 5. At the same time, this can also extend the continuous working time of the shield machine and improve the overall construction efficiency.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shield cutterhead advance crushing device, characterized in that: The present invention comprises a cutter head body (1), wherein a groove (2) is provided inside the cutter head body (1), a guide sleeve (3) is fixed inside the groove (2), a mounting seat (4) is provided inside the guide sleeve (3), a motor (5) is provided inside the mounting seat (4), the mounting seat (4) is connected to the output end of a hydraulic cylinder (7) via a first connecting seat (6), the hydraulic cylinder (7) is connected to a second connecting seat (8), the number of the hydraulic cylinders (7) is two, and the output end of the motor (5) is connected to a drill bit (9).

2. A shield cutterhead advance crushing device according to claim 1, characterized in that: The second connecting seat (8) is connected to the mounting plate (10), the mounting plate (10) is fixedly connected to the guide sleeve (3), and the mounting plate (10) is connected through the drill bit (9).

3. A shield cutterhead advance crushing device according to claim 2, characterized in that: A through hole (11) is provided on the mounting plate (10), and a first bearing (12) is provided inside the through hole (11).

4. The shield cutterhead advance crushing device according to claim 1, characterized in that: The drill bit (9) is connected to the mounting seat (4) via a second bearing (13).

5. The shield cutterhead advance crushing device according to claim 1, characterized in that: Slide blocks (14) are provided on both sides of the mounting seat (4), a slide groove (15) is provided inside the guide sleeve (3), and the slide blocks (14) match the slide groove (15).

6. The shield cutterhead advance crushing device according to claim 1, characterized in that: An annular groove (16) is provided on the mounting seat (4), and a phase change material layer (17) is provided inside the annular groove (16).

7. The shield cutterhead advance crushing device according to claim 6, characterized in that: A sealing cover (18) is provided at the rear end of the annular groove (16), a sealing gasket (19) is provided on the inner side of the sealing cover (18), and the sealing cover (18) is connected to the mounting seat (4) via a first bolt (20).

8. The shield cutterhead advance crushing device according to claim 1, characterized in that: A sealing flange (21) is provided at the rear end of the mounting seat (4), and the sealing flange (21) is connected to the cutter head body (1) via a second bolt (22).

9. The shield cutterhead advance crushing device according to claim 6, characterized in that: The constituent material of the phase change material layer (17) is paraffin.

10. The shield cutterhead advance crushing device according to claim 1, characterized in that: The number of the grooves (2) is multiple.

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