CN-224228672-U - Auxiliary device for empty pushing and undercut tunnel of shield machine and shield machine

CN224228672UCN 224228672 UCN224228672 UCN 224228672UCN-224228672-U

Abstract

The utility model discloses an auxiliary device for a shield tunneling machine to empty push a subsurface tunnel and a shield tunneling machine, and relates to the technical field of shield tunneling engineering, comprising a guide table arranged on a substrate and a telescopic structure connected to a pushing cylinder of the shield tunneling machine; the telescopic structure comprises a main arm connected to the propulsion cylinder, an auxiliary arm is hinged to the main arm, and a propulsion structure is connected between the main arm and the auxiliary arm. The auxiliary device realizes the full-automatic empty pushing and underground excavation section tunnel of the shield machine through the guide table, the reserved cavity, the pushing oil cylinder and the automatic telescopic device, improves the construction efficiency, forms the automatic empty pushing and underground excavation tunnel construction method of the shield machine, ensures the construction safety, reduces the investment of materials and personnel, and successfully solves a series of problems of complex dismantling process, high safety risk coefficient, large personnel investment and the like of the negative ring pipe piece in the underground excavation tunnel.

Inventors

HE BING
XIONG LIANG
YUAN XINGCHAO
CAO MENGHUA
JIANG MINGYONG
ZHOU XIANGANG
HE CHEN
ZHAO YUNFEI
LIU ZHENZHONG
ZHAO WEI
WANG GUOYI
ZHU SHUANGXIN

Assignees

中国水利水电第五工程局有限公司
中电建成都建设投资有限公司

Dates

Publication Date: 20260512
Application Date: 20250627

Claims (10)

1. The auxiliary device for the empty pushing and undercut tunnel of the shield machine is characterized by comprising a guide table (9) arranged on a substrate and a telescopic structure connected to a pushing oil cylinder (4) of the shield machine (3), wherein a reserved hole (8) is formed in the guide table (9), the telescopic structure comprises a main arm (5) connected to the pushing oil cylinder (4), an auxiliary arm (7) is hinged to the main arm (5), and a pushing structure is connected between the main arm (5) and the auxiliary arm (7).
2. The auxiliary device for the empty pushing and undercut tunnel of the shield tunneling machine according to claim 1, wherein the pushing structure comprises a pushing oil cylinder (6), and a telescopic end of the pushing oil cylinder (6) is connected with the auxiliary arm (7).
3. The auxiliary device for the empty pushing and undercut tunnel of the shield tunneling machine according to claim 2, wherein the main arm (5) and the auxiliary arm (7) are connected with mounting seats, and two ends of the pushing oil cylinder (6) are respectively connected with the mounting seats of the main arm (5) and the auxiliary arm (7).
4. The auxiliary device for the empty pushing and undercut tunnel of the shield tunneling machine according to claim 1, characterized in that a slope (16) is arranged in the reserved hole (8), and when the auxiliary arm (7) is stressed in the reserved hole (8), the end part of the auxiliary arm (7) is propped against the slope (16) of the reserved hole (8).
5. Auxiliary device for empty pushing and undercut tunnel of shield machine according to claim 4, characterized in that the end of the auxiliary arm (7) is connected with an abutment plate (18) for abutment with the slope (16) of the reserved hole (8).
6. The auxiliary device for a shield tunneling machine air-pushing undercut tunnel according to claim 5, characterized in that the outer diameter of said abutment plate is larger than the outer diameter of said auxiliary arm (7).
7. The auxiliary device for the empty pushing and undercut tunnel of the shield tunneling machine according to claim 4, wherein an arc-shaped surface (17) is further arranged in the reserved hole (8), and the arc-shaped surface (17) is opposite to the slope (16).
8. An auxiliary device for a shield tunneling machine empty pushing and undercut tunnel according to claim 1, characterized in that the main arm (5) and the pushing cylinder (4) are connected by welding or detachable connection.
9. An auxiliary device for a shield tunneling machine according to claim 8 wherein said detachable connection comprises a bolt assembly connection or a threaded connection.
10. A shield tunneling machine comprising the auxiliary device of any one of claims 1-9.

Description

Auxiliary device for empty pushing and undercut tunnel of shield machine and shield machine Technical Field The utility model relates to the technical field of shield tunnel engineering, in particular to an auxiliary device for a shield tunneling machine to empty push a subsurface tunnel and a shield tunneling machine. Background In the urban subway construction process, because shield construction is influenced by factors such as geology (e.g. high gas tunnels), environment (e.g. existing lines, important buildings (structures) and the like, the shield method cannot be adopted between two sites. The high gas tunnel is required to be constructed by a standard method, and when the existing subway line is penetrated down, the high gas tunnel is usually constructed by a mining method, and a later shield machine directly passes through the area section in order to ensure the operation safety of the subway line. Based on the above situation, the tunnel between two sites is usually constructed by using a shield method and a mine method, and when the construction of the tunnel by using the shield method is completed, the equipment can be lifted out only by the way that the tunnel reaches the working well. Currently, when an interval line tunnel is longer, in order to ensure ventilation safety, a wind shaft is usually arranged in the middle of the tunnel, so that a shield starts from a station, passes through the wind shaft and then arrives at the station to be received. When passing through the wind shaft, the negative ring is usually adopted to pass through the tool, and the negative ring and the tool are required to be removed after the shield tunneling machine passes through the wind shaft. Therefore, the conventional shield tunneling machine adopts a negative annular tool to pass through the underground tunnel, or adopts a rail clamping device, a steel plate translation mode and the like to enable the shield tunneling machine to be pushed through the underground tunnel, the working surface of the underground tunnel of a general subway is smaller, the construction mode is not facilitated to be developed, and the problems of high safety risk coefficient, long construction period, high cost and the like exist in the method. Disclosure of utility model The utility model aims to solve the technical problems that the existing shield tunneling machine has high safety risk coefficient, long construction period and higher cost when being pushed through a hidden tunnel in an empty way, and based on the problems, the utility model provides an auxiliary device for the shield tunneling machine to push the hidden tunnel in an empty way and the shield tunneling machine. The utility model is realized by the following technical scheme: The application provides an auxiliary device for a shield tunneling machine to empty push and undercut a tunnel, which comprises a guide table arranged on a substrate and a telescopic structure connected to a pushing oil cylinder of the shield tunneling machine, wherein a reserved hole is formed in the guide table, the telescopic structure comprises a main arm connected to the pushing oil cylinder, an auxiliary arm is hinged to the main arm, and a pushing structure is connected between the main arm and the auxiliary arm. Further, the pushing structure comprises a pushing oil cylinder, and the telescopic end of the pushing oil cylinder is connected with the auxiliary arm. Further, the main arm and the auxiliary arm are both connected with mounting seats, and two ends of the pushing oil cylinder are respectively connected with the mounting seats of the main arm and the auxiliary arm. Further, a slope is arranged in the reserved hole, and when the auxiliary arm is stressed in the reserved hole, the end part of the auxiliary arm is propped against the slope of the reserved hole. Further, an abutting plate for abutting against the slope of the reserved hole is connected to the end portion of the auxiliary arm. Further, the outer diameter of the abutting plate is larger than the outer diameter of the auxiliary arm. Further, an arc-shaped surface is arranged in the reserved hole, and the arc-shaped surface is opposite to the slope. Further, the main arm is connected with the propulsion cylinder through welding or a detachable connecting piece. Further, the detachable connection includes connection using a bolt assembly or a threaded connection. In a second aspect, the application provides a shield tunneling machine comprising the auxiliary device. Compared with the prior art, the utility model has the following advantages and beneficial effects: (1) The auxiliary device provided by the utility model realizes the full-automatic empty pushing and underground excavation section tunnel of the shield machine through the guide table, the reserved hole, the pushing oil cylinder and the automatic telescopic device, improves the construction efficiency, forms the automatic empty pushing and underground excavati