CN210660100U - Flexible composite cutter head for shield machine - Google Patents
Flexible composite cutter head for shield machine Download PDFInfo
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- CN210660100U CN210660100U CN201921166796.2U CN201921166796U CN210660100U CN 210660100 U CN210660100 U CN 210660100U CN 201921166796 U CN201921166796 U CN 201921166796U CN 210660100 U CN210660100 U CN 210660100U
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- cutter
- cutter head
- hard rock
- oil cylinder
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Abstract
The utility model discloses a shield constructs machine flexible composite blade disc comprises blade disc structure, hard rock hobbing cutter, weak soil cutter, flexible hydro-cylinder etc. and weak soil cutter fixed mounting is structural at the blade disc, and hard rock hobbing cutter is provided with the installation base. The cutter head structure is fixedly installed with the telescopic oil cylinder. The hard rock hob can be telescopically arranged on the telescopic oil cylinder from front to back through the installation base. The oil pipe and other lines of the telescopic oil cylinder are connected into the shield machine through a central rotary joint connected with the cutter head structure. Still further disclose a soft soil cutter and shield that hard rock hobbing cutter automatic switch over constructs machine flexible composite cutter dish, at soft soil cutter bottom and cutter dish structural fixation hookup department, set up pressure sensor. When the stress of the soft soil cutter head reaches the set value of the pressure sensor during tunneling, a PLC sends an instruction to the telescopic oil cylinder control system, and the telescopic oil cylinder extends to be higher than the soft soil cutter, so that automatic switching between the soft soil cutter and the hard rock hob is realized.
Description
Technical Field
The utility model relates to a shield constructs machine composite cutter dish, is particularly useful for the flexible composite cutter dish under the complicated geological conditions.
Background
In the prior art, a composite cutter head for a shield machine generally adopts a rigid structure, namely, rigid connection modes are adopted between the cutter head of the shield machine and a soft soil cutter and between the cutter head of the shield machine and a hard rock hob. The composite cutter head adopting the rigid connection mode has the following technical defects: because the rock breaking mechanisms of soft soil and hard rock are different, the structure and the use of the soft soil and the hard rock are greatly different. Generally, a soft soil stratum needs a soft soil cutter to scrape and tunnel the soft soil stratum, and hard rock needs a hard rock hob to extrude and break the hard rock. The shield machine composite cutter head with the rigid structure has the advantages that the heights of the soft soil cutter and the hard rock hob are basically close and cannot be adjusted, and in construction, the two cutters simultaneously play a role in tunneling stratums no matter in a soft soil geological section or a hard rock geological section, so that the two cutters cannot play respective advantages. Such as: the composite cutter configured for the hard rock section mixed in the soft soil often has the technical defects that the hard rock section is not tunneled and the hard rock hob is already ground. Or in the construction of hard rock section, the technical defect that the soft soil cutter is scraped with the surface of the hard rock at the same time to be quickly abraded exists. Therefore, the working efficiency of the composite cutter head is greatly weakened, the cutter is changed in the middle of construction caused by the method, the labor intensity of operators is increased, and great personal risks exist.
Disclosure of Invention
To the above-mentioned prior art defect, the utility model provides a flexible compound blade disc through the relative height between hard rock hobbing cutter of adjustment and the weak soil cutter, reaches compound blade disc in complicated geological construction, the purpose of hard rock hobbing cutter and weak soil cutter performance advantage separately, the work efficiency of the compound blade disc of not only very big improvement can effectively reduce the construction tool changing number of times midway moreover to reduce or eliminate operation workman's intensity of labour and the bodily injury problem that causes from this.
In order to achieve the technical purpose, the utility model discloses a following technical scheme realizes: the utility model provides a shield constructs machine flexible compound blade disc, comprises blade disc structure, hard rock hobbing cutter, weak soil cutter, flexible hydro-cylinder etc. and weak soil cutter fixed mounting is in the blade disc structure, and hard rock hobbing cutter is provided with the installation base. And a telescopic oil cylinder is arranged at the installation position of the cutter head structure and the hard rock hob. The cutter head structure is fixedly installed with the telescopic oil cylinder. The hard rock hob can be telescopically arranged on the telescopic oil cylinder from front to back through the installation base. The oil pipe and other lines of the telescopic oil cylinder are connected into the shield machine through a central rotary joint connected with the cutter head structure. According to the flexible composite cutter head adopting the hard rock hob capable of stretching back and forth, when a soft soil section is constructed, the stretching oil cylinder shrinks, and the hard rock hob shrinks to the minimum height along with the shrinkage, which is lower than the height of the soft soil cutter, so that the contact friction between the hard rock hob and a tunneling soil body is reduced, and the eccentric wear defect is effectively reduced or prevented. When construction enters a rock section, the telescopic oil cylinder extends to drive the hard rock hob to extend towards the front of the cutter head structure, and the height of the hard rock hob is higher than that of the soft soil hob. The hard rock hob crushes the rock by squeezing the rock. Thereby effectively preventing the rock from quickly wearing the soft soil cutter. Thereby leading the hard rock hob and the soft soil cutter in the composite cutter head to fully exert the respective development.
As the utility model discloses a further improvement, the utility model discloses the technical problem who further solves provides a shield according to tunnelling soil body weak soil cutter and hard rock hobbing cutter automatic switch-over constructs machine flexible composite blade disc. Therefore, for the flexible composite cutter head for the shield machine, a pressure sensor is arranged at the fixed connection part of the soft soil cutter bottom and the cutter head structure, and the line of the pressure sensor is connected into a control system in the shield machine through a central rotary joint connected with the cutter head structure. When the stress of the soft soil cutter head reaches the set value of the pressure sensor during tunneling, a PLC sends an instruction to the telescopic oil cylinder control system, and the telescopic oil cylinder extends to be higher than the soft soil cutter, so that automatic switching between the soft soil cutter and the hard rock hob is realized.
As the utility model discloses a further improvement, the blade disc structure back has set up the circuit protection groove for hold and protect the oil pipe and the pressure sensor circuit etc. of flexible hydro-cylinder. In order to prevent the dregs from entering the line protection groove to damage the lines such as the oil pipe and the like and facilitate the installation or the maintenance of the lines such as the oil pipe and the like, the line protection groove adopts an openable closed structure.
As a further improvement, the hard rock hob installing base is of a U-shaped structure and is composed of a side plate and a bottom plate. The bottom plate is fixedly connected with the front telescopic oil cylinder and the rear telescopic oil cylinder, in order to reduce the resistance of the bottom plate to the muck and prevent the muck from being accumulated in the hard rock hob mounting base, the bottom plate of the hard rock hob mounting base is in a triangular cross section shape, and one corner of the bottom plate is close to the maximum diameter of the hard rock hob and is centered.
As a further improvement, the cutter head structure is provided with a guide plate which is assembled with the side plate of the hard rock hob mounting base in a sliding fit manner. By adopting the cutter head structure with the guide plate, the front and back stretching direction of the hard rock hob can be better controlled, and a better supporting effect is provided for the hard rock hob in construction.
In order to ensure the mechanical performance of the hard rock hob in construction and prevent the hard rock hob from being stressed and retracted; meanwhile, the phenomenon that the thickness of the cutter head is excessively increased due to the adoption of the telescopic oil cylinder is avoided, and the telescopic oil cylinder is preferably a thin self-locking hydraulic oil cylinder.
Drawings
FIG. 1 is a schematic view of a flexible composite cutter head for a shield tunneling machine according to the present invention;
FIG. 2 is a sectional view of the flexible composite cutter head for the shield tunneling machine of the present invention;
fig. 3 is a sectional view of the soft soil cutter installation of the flexible composite cutter head for the shield machine of the present invention;
fig. 4 is the hard rock hob installation cross-sectional view of the flexible composite cutter head for the shield machine of the utility model.
In the figure, 1, a cutter head structure, 2, a hard rock hob, 3, a soft soil cutter, 4, a telescopic oil cylinder, 5, a central rotary joint, 6, a pressure sensor, 11, a line protection groove, 12, a guide plate, 21, a hard rock hob installation base, 22, a bottom plate, 23 and a side plate are arranged.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model relates to a shield constructs machine flexible composite blade disc comprises blade disc structure 1, hard rock hobbing cutter 2, weak soil cutter 3, flexible hydro-cylinder 4 etc. and soft soil cutter 3 fixed mounting is on blade disc structure 1, and hard rock hobbing cutter 2 is provided with installation base 21. The cutter head structure 1 and the telescopic oil cylinder 4 are fixedly installed together. The hard rock hob 2 can be telescopically arranged on the telescopic oil cylinder 4 back and forth through the installation base 21. The oil pipe and other lines of the telescopic oil cylinder 4 are connected into the shield machine through a central rotary joint 5 connected with the cutter head structure 1. The back of the cutter head structure 1 is provided with a circuit protection groove 11, and the circuit protection groove 11 adopts an openable closed structure. The telescopic oil cylinder 4 is preferably a thin self-locking hydraulic oil cylinder.
As shown in fig. 3, in the flexible composite cutter head for the shield machine, a pressure sensor 6 is arranged at the fixed connection position of the bottom of the soft soil cutter 3 and the cutter head structure 1, and the line of the pressure sensor 6 is connected to a control system in the shield machine through a central rotary joint connected with the cutter head structure 1. When the stress of the soft soil cutter head reaches the set value of the pressure sensor 6 during tunneling, a PLC sends an instruction to the telescopic oil cylinder control system, and the telescopic oil cylinder extends to be higher than the soft soil cutter, so that automatic switching between the soft soil cutter and the hard rock hob is realized.
As shown in fig. 2 and 4, the hard rock hob mounting base 21 has a U-shaped structure and is composed of side plates 23 and a bottom plate 22. The bottom plate 22 is fixedly connected with the front and rear telescopic oil cylinders 4, in order to reduce the resistance of the bottom plate 22 to the muck and prevent the muck from being accumulated in the hard rock hob mounting base 21, the bottom plate 22 is in a triangular section shape, and one corner of the bottom plate is close to the maximum diameter of the hard rock hob 2 and is centered. The cutter head structure 1 is provided with a guide plate 12 which is assembled with a side plate 23 of a hard rock hob installation base 21 in a sliding fit mode. By adopting the cutter head structure 1 with the guide plate 12, the front and back stretching direction of the hard rock hob 2 can be better controlled, and a better supporting effect is provided for the hard rock hob 2 in construction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (8)
1. The utility model provides a shield constructs machine flexible compound blade disc, includes blade disc structure, hard rock hobbing cutter, weak soil cutter, and weak soil cutter fixed mounting is structural at the blade disc, and hard rock hobbing cutter is provided with installation base, its characterized in that: the shield tunneling machine is characterized by further comprising a telescopic oil cylinder, the cutter head structure and the telescopic oil cylinder are fixedly installed together, the hard rock hob can be installed on the telescopic oil cylinder in a front-back telescopic mode through an installation base of the hard rock hob, and lines such as oil pipes of the telescopic oil cylinder are connected into the shield tunneling machine through a center rotary joint connected with the cutter head structure.
2. The flexible composite cutter head for the shield tunneling machine according to claim 1, characterized in that: and a pressure sensor is arranged at the fixed connection position of the bottom of the soft soil cutter and the cutter head structure, and a pressure sensor line is connected into a control system in the shield tunneling machine through a central rotary joint connected with the cutter head structure.
3. The flexible composite cutter head for the shield tunneling machine according to claim 1 or 2, characterized in that: and a line protection groove is arranged on the back surface of the cutter head structure.
4. The flexible composite cutter head for the shield tunneling machine according to claim 3, characterized in that: the circuit protection groove is of an openable closed structure.
5. The flexible composite cutter head for the shield tunneling machine according to claim 1 or 2, characterized in that: the hard rock hob installation base is of a U-shaped structure and consists of side plates and a bottom plate.
6. The flexible composite cutter head for the shield tunneling machine according to claim 5, characterized in that: the bottom plate is in a triangular cross section shape, and one corner of the bottom plate is close to the maximum diameter of the hard rock hob and is centered.
7. The flexible composite cutter head for the shield tunneling machine according to any one of claims 1 or 2, wherein: the cutter head structure is provided with a guide plate.
8. The flexible composite cutter head for the shield tunneling machine according to claim 1, characterized in that: the telescopic oil cylinder is a thin self-locking hydraulic oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166796.2U CN210660100U (en) | 2019-07-24 | 2019-07-24 | Flexible composite cutter head for shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166796.2U CN210660100U (en) | 2019-07-24 | 2019-07-24 | Flexible composite cutter head for shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660100U true CN210660100U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921166796.2U Active CN210660100U (en) | 2019-07-24 | 2019-07-24 | Flexible composite cutter head for shield machine |
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| CN (1) | CN210660100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284894A (en) * | 2019-07-24 | 2019-09-27 | 天津宏轩达科技有限公司 | A kind of shield machine flexible compound cutterhead |
| CN118292897A (en) * | 2024-06-05 | 2024-07-05 | 杭州华东地下工程智能装备研究院有限公司 | Tooth-light circular TBM hob for uneven soft and hard composite stratum |
-
2019
- 2019-07-24 CN CN201921166796.2U patent/CN210660100U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284894A (en) * | 2019-07-24 | 2019-09-27 | 天津宏轩达科技有限公司 | A kind of shield machine flexible compound cutterhead |
| CN118292897A (en) * | 2024-06-05 | 2024-07-05 | 杭州华东地下工程智能装备研究院有限公司 | Tooth-light circular TBM hob for uneven soft and hard composite stratum |
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