CN-224214203-U - Automatic telescopic rock burst protection structure and open TBM

CN224214203UCN 224214203 UCN224214203 UCN 224214203UCN-224214203-U

Abstract

The utility model discloses an automatic telescopic rock burst protection structure and an open TBM, which solve the problems that the protection structure in the prior art cannot realize the automatic telescopic function in the LI region of the TBM and has weak rock burst protection capability. The automatic telescopic rock burst protection structure comprises a guide rail, wherein a plurality of main supports capable of moving along the guide rail are arranged on the guide rail, flexible damping pieces are arranged on the main supports, flexible protection structures are arranged at the tops of the main supports, locking mechanisms corresponding to the guide rail are arranged at the bottoms of the main supports, and blocking mechanisms corresponding to the main supports are arranged on the guide rail. The utility model adopts a plurality of main supports and flexible protection structures which slide on the guide rails and are matched with the tops, the flexible protection structures are folded along with the main beams in a random movement manner in the telescopic process of the rock burst protection structures, so that the large space is not occupied, the full shielding protection structures are formed on the tops of the main supports, and the protection effect in the LI area of the TBM is improved.

Inventors

LU YIQIANG
LIU ZHIFEI
Peng Erjun
JIANG QIAO
YUAN XIAOWEI
XING JUNBO

Assignees

中铁工程装备集团有限公司

Dates

Publication Date: 20260508
Application Date: 20250630

Claims (10)

1. An automatic telescopic rock burst protection structure comprises a guide rail (6) and is characterized in that a plurality of main supports capable of moving along the guide rail (6) are arranged on the guide rail (6), flexible damping pieces (2) are arranged on the main supports, flexible protection structures are arranged at the tops of the main supports, locking mechanisms corresponding to the guide rail (6) are arranged at the bottoms of the main supports, and blocking mechanisms corresponding to the main supports are arranged on the guide rail (6).
2. The automatic telescopic rock burst protection structure according to claim 1 is characterized in that the main support comprises two support posts (1) and main beams (3) which transversely span the two support posts (1), the main beams (3) are connected with the support posts (1) through flexible damping pieces (2), the flexible protection structure is connected to the main beams (3), the flexible protection structure is carbon fiber mesh cloth (4), the carbon fiber mesh cloth (4) is fixed to the main beams (3) of two adjacent main supports through bolt pieces, and the locking mechanism is arranged at the bottom of the support posts (1).
3. The automatic telescopic rock burst protection structure according to claim 2, wherein the flexible damping piece (2) comprises damping pistons (2-1) arranged at two ends of the main beam (3) and damping cavities (2-2) arranged at the upper parts of the supporting columns (1), the damping pistons (2-1) are located in the damping cavities (2-2), and damping media (2-3) are arranged in the damping cavities (2-2).
4. The automatic telescopic rock burst protection structure according to claim 2 or 3, wherein a chute matched with the guide rail (6) is arranged at the bottom of the support column (1), a dual-drive roller (10) contacted with the guide rail (6) is arranged in the chute, and the dual-drive roller (10) is connected with a drive motor embedded in the support column (1).
5. The automatic telescopic rock burst protection structure of claim 4, wherein the locking mechanism comprises a locating pin (9) vertically arranged in a chute, the locating pin (9) is connected with a first driving piece embedded in the support column (1), a locating hole (7) corresponding to the locating pin (9) is formed in the guide rail (6), the locating pin (9) is inserted into the locating hole (7) under the action of the first driving piece and locks the support column (1), the first driving piece is an air cylinder or an oil cylinder or an electromagnetic driver, and when the first driving piece adopts the electromagnetic driver, the locating pin (9) is a magnetic plug.
6. The automatic telescopic rock burst protection structure according to any one of claims 1-3 and 5, wherein the blocking mechanism comprises a stop block (8) vertically arranged on a guide rail (6), the stop block (8) is in sliding fit with a limit hole arranged on the guide rail (6), a second driving piece for driving the stop block (8) to move up and down is arranged in the limit hole, and the second driving piece is an air cylinder or an oil cylinder.
7. The automatic telescopic rock burst protection structure according to claim 1, 3 or 5, wherein auxiliary supporting rods (11) are arranged on the front side and the rear side of the main support, one end of each auxiliary supporting rod (11) is hinged with a sliding top seat (5), the other end of each auxiliary supporting rod is hinged with a sliding base (13), the sliding top seats (5) are in sliding fit with vertical sliding rails (12) arranged on the main support, and the sliding bases (13) are in sliding fit with T-shaped grooves (15) arranged on the guide rails (6).
8. The automatic telescopic rock burst protection structure according to claim 7 is characterized in that two auxiliary supporting rods (11) between two adjacent main supporting rods are hinged to the same sliding base (13) and are arranged in a V shape, the sliding base (13) hinged to the auxiliary supporting rods (11) at the two ends is a single sliding roller seat (13 a), the single sliding roller seat (13 a) is arranged on the guide rail (6) in a sliding mode, and rollers (14) in rolling fit with the guide rail (6) are arranged on the single sliding roller seat (13 a).
9. An open TBM, characterized in that the automatic telescopic rock burst protection structure according to any one of claims 1 to 8 is adopted.
10. The open TBM of claim 9 wherein the auto-telescoping rock burst protection structure is disposed on a TBM mixing spray area or the auto-telescoping rock burst protection structure is disposed on a construction trolley (70).

Description

Automatic telescopic rock burst protection structure and open TBM Technical Field The utility model relates to the technical field of tunnel construction, in particular to a rock burst protection structure. Background In the underground engineering excavation process of a TBM (full-face tunnel boring machine) under the high ground stress condition, the geological disaster phenomenon of rock burst frequently occurs, direct impact and damage are caused to TBM equipment, even serious threat is caused to the life safety of constructors, and huge economic loss and social influence are brought. In order to cope with the rock burst hazard, the TBM is provided with a protection structure at the rear matched part in the design process. The protection structures can resist the impact caused by rock burst to a certain extent, and protect the safety of equipment and personnel in a rear matched area. However, in the segment splicing machine area of the main machine and the middle part of the main beam of the TBM, due to the special requirement of equipment on the operation space, a fixed protection structure cannot be formed, so that the area becomes a high-risk area when the rock burst occurs, the area is extremely vulnerable to the rock burst, and the development of a rock burst protection structure suitable for the area is needed, so that the equipment operation is not affected, and the equipment and personnel can be protected when the rock burst occurs. The prior patent such as a rock burst protection cover with the publication number of CN219974528U, which is used for a rock burst method construction face area but cannot be used for TBM rock burst protection, the patent with the publication number of CN218839601U provides a rock burst protection trolley which resists rock burst through an elastic net, is telescopic through a telescopic rod control structure, has weak rock burst impact resistance and cannot be carried on TBM equipment, and the patent with the publication number of CN111140265A and the patent with the publication number of CN111042840A improve the rock burst protection capacity of the device through improving a lifting protection structure, but cannot realize the automatic telescopic function of the TBM equipment. The existing rock burst protection device only considers the protection function of rock burst protection, the automatic expansion function of the LI area of the TBM cannot be realized, the LI area of the TBM is provided with an anchor rod drilling machine and an emergency spraying concrete system, the rock burst protection capability is weak, and larger rock burst impact cannot be effectively treated, so that the automatic expansion rock burst protection structure for the open TBM is necessary to design. Disclosure of utility model Aiming at the defects in the background technology, the utility model provides an automatic telescopic rock burst protection structure and an open TBM, and solves the problems that the protection structure in the prior art cannot realize the automatic telescopic function in the LI area of the TBM and has weak rock burst protection capability. The technical scheme is that the automatic telescopic rock burst protection structure comprises a guide rail, a plurality of main supports capable of moving along the guide rail are arranged on the guide rail, flexible damping pieces are arranged on the main supports, flexible protection structures are arranged at the tops of the main supports, locking mechanisms corresponding to the guide rail are arranged at the bottoms of the main supports, and blocking mechanisms corresponding to the main supports are arranged on the guide rail. The flexible protection structure is matched with the main support and the flexible damping piece which can move along the guide rail, and when TBM equipment faces the rock burst risk or needs to be protected, the rock burst protection structure can be rapidly and automatically unfolded to form a firm protection barrier. The device has accurate and efficient unfolding action, can timely block various factors which may damage the device at key time, such as high-speed ejected rock burst fragments, strong impact force and the like, and provides comprehensive and reliable protection for the device. Under the condition that protection is not needed, the protection structure can be automatically folded, so that the equipment can perform various work tasks without hindrance, and an excellent solution is provided for the balance of equipment protection and normal work. Further preferably, the main support comprises two support posts and main beams spanned on the two support posts, the main beams are connected with the support posts through flexible damping pieces, the flexible protection structure is connected to the main beams, the flexible protection structure is carbon fiber mesh cloth, the carbon fiber mesh cloth is fixed to the main beams of two adjacent main supports through bolt pieces, and the