CN-224214180-U - Open TBM with cutter head expanding, blocking preventing and escaping functions

CN224214180UCN 224214180 UCN224214180 UCN 224214180UCN-224214180-U

Abstract

An open TBM with cutter expanding, anti-seizing and escaping functions is an improvement on a cutter of a common open TBM, a movable side hob, a telescopic hydraulic cylinder and a hydraulic motor system are added on the cutter, the movable side hob and the telescopic hydraulic cylinder are arranged at the front end of a cutter body, the telescopic hydraulic cylinder drives the corresponding movable side hob to freely stretch out and draw back, the movable side hob is arranged at the edge of the cutter, the movable side hob can radially extend out of the cutter body along the cutter body, sliding teeth are arranged on two sides of a cutter seat of the movable side hob, corresponding sliding patterns are embedded in the cutter seat of the movable side hob corresponding to the inner side of a cutter seat, the sliding teeth slide along the sliding patterns, and a plurality of hydraulic motor systems are uniformly and symmetrically arranged in a shield device and at the rear end of the cutter body and work independently. The open TBM can realize the expansion and excavation of the face through the free sliding and the extension of the movable side hob, once the cutterhead clamping machine occurs, the hydraulic motor system provides alternate torque, and the hydraulic motor system is matched with the retraction of the movable side hob and the retraction of the pushing oil cylinder, so that the hydraulic motor system is convenient for getting rid of poverty.

Inventors

ZHANG ZHEN
WANG HUANQIANG
ZHANG DANPING
Qing Chaohui
GUO BAILI
XIA YING
ZHANG JIANHUI
LUO NING
ZOU HUAJUN

Assignees

中国水利水电第七工程局有限公司

Dates

Publication Date: 20260508
Application Date: 20250521

Claims (10)

1. An open TBM with cutter head expanding, blocking preventing and escaping functions comprises a cutter head (1), a shield device (2), a main driving system (8), a main beam (7), a propelling system (3), a shoe supporting device (4) and a rear supporting system (5), wherein the front end of the shield device (2) is provided with the cutter head (1), the shield device (2) is internally provided with the main driving system (8) and the main beam (7), the shield device (2) is arranged on the periphery of the main driving system (8), the rear end of the cutter head (1) is provided with the main driving system (8), the main driving system (8) is in transmission connection with the cutter head (1), the other end of the main driving system (8) is connected with the front end of the main beam (7), the front end of the main beam (7) is hinged with the main driving system (8), the propelling system (3) is sequentially arranged on the main beam (7) from front to rear, The novel automatic TBM comprises a main beam (7), a supporting shoe device (4), a rear supporting system (5), a propelling system (3) and the supporting shoe device (4) are symmetrically arranged on two sides of the main beam (7), the propelling system (3) is arranged between the main driving system (8) and the supporting shoe device (4), the rear supporting system (5) is arranged at the tail end of the main beam (7), a cutterhead (1) comprises a cutterhead body, a hob and a shovel (16), the front end of the cutterhead body is provided with the hob and the shovel (16), the rear end of the cutterhead body is connected with the main driving system (8), the hob comprises a central main hob (11), a central secondary hob (12), a middle hob (13) and a fixed hob (14), and is characterized in that a movable hob (15) is further arranged on the cutterhead body of the cutterhead (1) of the open TBM, The movable side hob driving system and the hydraulic motor system (6), the movable side hob (15) and the movable side hob driving system are arranged at the front end of the hob body, the movable side hob (15) is connected with the movable side hob driving system, the movable side hob driving system adopts a telescopic hydraulic cylinder (19), the telescopic hydraulic cylinder (19) is connected with the corresponding movable side hob (15) to drive the corresponding movable side hob (15) to freely stretch out and draw back, the movable side hob (15) can radially extend out of the hob body along the hob body, the telescopic hydraulic cylinder (19) comprises a hydraulic cylinder main body (192) and a movable connecting piece (191), the movable connecting piece (191) connects the hydraulic cylinder main body (192) with the tool apron of the movable side hob (15) to enable the movable side hob (15) to have the extending and retracting functions, the two sides of the movable side hob (15) are provided with sliding teeth (18), the corresponding sliding lines (17) are embedded in the tool apron of the corresponding movable side hob (15) on the inner side of the hob base of the hob (1), the sliding teeth (18) slide along the sliding lines (17) to enable the movable side hob to have the rotating function, and the hydraulic motor (6) is arranged in the shield (2) The rear end of a cutter head body of the cutter head (1), the hydraulic motor system (6) comprises a motor (61) and a hydraulic motor (62), the hydraulic motor (62) is connected with the cutter head (1), a plurality of movable edge hob (15) are symmetrically arranged at the edge of the cutter head (1), a plurality of telescopic hydraulic cylinders (19) which are correspondingly connected with the movable edge hob (15) are respectively and correspondingly arranged, the number of the telescopic hydraulic cylinders is the same as that of the movable edge hob (15), and the plurality of hydraulic motor systems (6) work independently.
2. The open TBM with the cutterhead expanding, blocking preventing and escaping functions is characterized in that a slideway is arranged on the rear section of a main beam (7), the slideway is matched with a shoe supporting device (4), or an installation frame is arranged above the slideway of the rear section of the main beam (7), the installation frame is connected with the shoe supporting device (4) in a telescopic mode, a rear supporting system (5) is fixedly connected to the rear section of the main beam (7) at the rear end of the shoe supporting device (4), the shoe supporting device (4) is a double-shoe supporting mechanism and comprises a left shoe supporting device and a right shoe supporting device, the left shoe supporting device and the right shoe supporting device are arranged on the main beam (7) in a sliding mode and are axially parallel to each other along the main beam (7) and symmetrically arranged on two sides of the main beam (7), the shoe supporting device comprises shoe supporting seats, shoe supporting cylinders and shoe plates, the shoe supporting seats are connected with the shoe plates through the shoe supporting cylinders, the pushing system (3) comprises a left pushing cylinder, a right pushing cylinder and a right pushing cylinder, the left pushing cylinder and the right pushing cylinder are axially arranged in parallel to the main beam (7), and the two sides of the corresponding shoe supporting cylinders (7) are respectively hinged to the two sides of the main beam (7).
3. The open TBM with the cutterhead expanding, blocking preventing and escaping functions is characterized in that a pair of lugs are symmetrically and fixedly arranged at the front end of a main beam (7), a left propulsion oil cylinder is connected to a shoe plate of a left support shoe through hinging rotation, the other end of the left propulsion oil cylinder extends to one lug on the front end of the main beam (7) and is in rotational connection with a corresponding lug, a right propulsion oil cylinder is connected to a shoe plate of a right support shoe through hinging rotation, the other end of the right propulsion oil cylinder extends to the other lug on the front end of the main beam (7), and the other end of the right propulsion oil cylinder is in rotational connection with the corresponding lug.
4. The open type TBM with the cutter head expanding, digging, blocking preventing and escaping functions is characterized in that a central main hob (11) is arranged in the middle of a cutter head body, fixed side hob (14), movable side hob (15) and shovel blades (16) are arranged on the edge of the cutter head body, a central secondary hob (12) and middle hob (13) are arranged between the middle of the cutter head body and the edge, 4 central main hob (11) are arranged, 4 central secondary hob (12) are arranged, 16 middle hob (13) are arranged, and 10 fixed side hob (14) are arranged.
5. The open TBM with cutter head expanding, blocking preventing and escaping functions is characterized in that the side hob and the middle hob are both single hob and the center hob is both double hob.
6. The open type TBM with cutter head expanding, anti-seizing and escaping functions as claimed in claim 1, wherein the hydraulic cylinder main body (192) is a two-stage telescopic hydraulic cylinder.
7. The open TBM with the cutter head expanding, blocking preventing and escaping functions is characterized in that 4 movable edge rolling cutters (15) are uniformly and symmetrically arranged, are single rolling cutters and are uniformly distributed on the edge of the whole cutter head (1), 4 corresponding telescopic hydraulic cylinders (19) and 4 corresponding hydraulic motor systems (6) are respectively and correspondingly arranged, the 4 telescopic hydraulic cylinders (19) are uniformly distributed around the base of the movable edge rolling cutter (15) at the front end of the cutter head main body and drive the corresponding movable edge rolling cutters (15) to freely stretch and retract, the 4 hydraulic motor systems (6) are uniformly distributed on the rear side of the cutter head main body, and the 4 hydraulic motor systems (6) work independently.
8. The open TBM with cutter head expanding, blocking preventing and escaping functions according to claim 1 is characterized in that 4 rows of protruding circular arc sliding teeth (18) are arranged on two sides of a cutter head of the movable edge hob (15), corresponding circular arc sliding patterns (17) are embedded in the base of the movable edge hob (15) corresponding to the inner side of the cutter head (1), the sliding teeth (18) freely slide along the sliding patterns (17), and the movable edge hob (15) can slide in a range of 0 DEG < alpha <90 DEG in cooperation with a telescopic hydraulic cylinder (19).
9. The open TBM with cutter head expanding, blocking preventing and escaping functions according to claim 1, wherein the moving track of the cutter head tip of the movable side cutter (15) is x, y= (L+M). Cos alpha, (L+M). Sin alpha, wherein L is the distance from the cutter seat edge of the movable side cutter (15) to the hole center of the movable connecting piece (191), M is the exposed height of the movable side cutter (15), and alpha is the rotation angle of the movable side cutter (15).
10. The open TBM with cutter head expanding, digging, clamping preventing and escaping functions is characterized in that the expansion range of the movable side hob (15) is 0< M <100mm.

Description

Open TBM with cutter head expanding, blocking preventing and escaping functions Technical Field The utility model belongs to the technical field of tunnel boring, in particular to the technical field of tunnel boring machines, and particularly relates to an open TBM with cutter head expanding, blocking preventing and escaping functions. Background The tunnel boring machine Tunnel Boring Machine, the TBM is a rock mass automatic tunneling heavy equipment integrating tunneling, ballast discharging, lining, disaster prevention and the like. The TBM usually encounters weak surrounding rocks with loose structure, water softening, low strength and poor self stability in the tunneling process, the surrounding rocks are extremely easy to cause TBM blocking machines under the action of ground stress and engineering disturbance, the TBM blocking machines comprise shield blocking machines and cutter disc blocking machines, wherein the surrounding rocks continuously and rapidly converge and deform, when the convergence value reaches a gap between the surrounding rocks and the shield, the shield is subjected to frictional resistance caused by the extrusion of the surrounding rocks, so that hydraulic thrust equipment at the rear is difficult to overcome the frictional resistance of the shield to form the shield blocking machines, the scattered broken stone is buried in the cutter disc due to the fact that the face of a face excavated in front is difficult to self-stabilize, and the rock blocks and loose gravel residues compress a conveying belt, so that the cutter disc cannot rotate due to the increase of the rotational resistance, and the cutter disc blocking machines are formed. In the tunneling operation process, the cutter head blocking machine accident is more sudden, the cutter head blocking machine needs to be flexibly trapped after the accident, and the shield blocking machine needs to be prevented in advance in the early stage of the accident. Whatever the crash accident happens, they will cause a significant delay in the construction period. Therefore, in order to restore the normal operation of the system in the shortest time, to avoid influencing the escaping process due to equipment failure, in addition to making a reliable escaping scheme, it is extremely necessary to perform redundant design on the key parts of the TBM cutterhead. For example, critical components that are susceptible to damage and wear are prepared or improved in advance so that they can both allow the TBM to operate efficiently and stably during normal operation and ensure continuity of the out-of-service operation in the event of a stuck machine. Disclosure of utility model Based on the background, the utility model provides an open TBM with cutter head expanding, anti-blocking and escaping functions. The utility model adopts the following technical scheme to realize the aim: The utility model provides an open TBM with cutter head expanding, anti-blocking and escaping functions, which comprises a cutter head, a shield device, a main driving system, a main beam, a propulsion system, a shoe supporting device and a rear supporting system; the front end of the shield device is provided with a cutter head, a main driving system and a main beam are arranged in the shield device, and the shield device is arranged on the periphery of the main driving system; the rear end of the cutterhead is provided with a main driving system, the main driving system is in transmission connection with the cutterhead, the other end of the main driving system is connected with the front end of a main beam, and the front end of the main beam is hinged with the main driving system; the main beam is sequentially provided with a propulsion system, a shoe supporting device and a rear supporting system from front to back, the propulsion system and the shoe supporting device are respectively and symmetrically arranged at two sides of the main beam, the propulsion system is arranged between the main driving system and the shoe supporting device, the tail end of the main beam is provided with the rear supporting system, the cutter head comprises a cutter head body, a hob and a shovel blade, the front end of the cutter head body is provided with the hob and the shovel blade, the rear end of the cutter head body is connected with the main driving system, the hob comprises a central main hob, a central secondary hob, a middle hob and a fixed side hob, the key technology is that the cutter head body of the open TBM is also provided with a movable side hob, a movable side hob driving system and a hydraulic motor system, the movable side hob and the movable side hob driving system are arranged at the front end of the cutter head body, the movable side hob is connected with the movable side hob driving system, the movable side hob driving system adopts a telescopic hydraulic cylinder, the telescopic hydraulic cylinder is connected with the corresponding movable hob, the movable