CN112112660A

CN112112660A - Propulsion device for self-advancing tunnel boring machine

Info

Publication number: CN112112660A
Application number: CN202011245738.6A
Authority: CN
Inventors: 樊治国; 郭志; 丁绍军; 韩丽森; 刘丽欢; 韩凝远; 王以栋; 刘桂涛
Original assignee: Csic Qingdao Track Traffic Equipment Co ltd
Current assignee: Csic Qingdao Track Traffic Equipment Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2020-12-22

Abstract

The invention relates to a propelling device for a self-propelled roadway heading machine, which comprises a self-propelled chassis main body, wherein an upper shoe supporting oil cylinder unit and a lower shoe supporting oil cylinder unit which is arranged in parallel with the upper shoe supporting oil cylinder unit are arranged on the self-propelled chassis main body; a telescopic shield and a front shield are sequentially arranged at the front part of the self-propelled chassis main body, a driving system is arranged on the telescopic shield, and a propelling unit is arranged between the driving system and the supporting shoes at the two sides of the self-propelled chassis main body. The invention has the advantages that: the high-efficiency tunneling speed can be realized, the safety of operators far away from a working face can be realized, the high-efficiency tunneling machine can adapt to various geologies, the thrust of the oil cylinder is high, and the low-cost safe and quick transition requirement can be realized by disassembling in a small range.

Description

Propulsion device for self-advancing tunnel boring machine

Technical Field

The invention relates to a propelling device for a self-propelled roadway heading machine.

Background

The coal mine tunnel boring machine is used for boring a coal mine tunnel, and is required to shorten host equipment with a smaller hole diameter (less than 5 m) as much as possible so as to realize a smaller turning radius. The tunnel is different in length and has frequent transition requirements, and the most common main engine propulsion oil cylinder arrangement modes of the existing tunneling machine comprise a double-shield mode, a single-shield mode and an open mode. Although the single shield mode realizes the shortening of the length of the host, the forward propulsion is realized by the aid of duct pieces, and the supporting, the spraying and the anchoring cannot be realized.

The double-shield mode propulsion oil cylinder can realize safe propulsion under the protection of shields, but the structure is complex, and the transition dismantling is difficult to realize. The tunnel boring machine is a rock drilling machine, a double-shield type tunnel boring machine and an open type tunnel boring machine, wherein the rock drilling machine, the double-shield type tunnel boring machine and the open type tunnel boring machine have flexibility, but the main machine is longer and difficult to realize small turning, the safety is poor, and the machine dismantling and transition are difficult. The double-shield mode propulsion oil cylinder can realize safe propulsion under shield protection, but has a complex structure, difficult realization of transition dismantling, high cost of transition remanufacturing, poor transition safety, sensitivity to dust, gas and the like in a roadway, difficulty in firing and difficulty in increasing the difficulty in disassembling the shield body. The rock drill is flexible in roadway section, is U-shaped and rectangular in round angle, but is low in tunneling efficiency, poor in safety and lagging in support.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a propelling device for a self-advancing tunnel boring machine, and the technical scheme of the propelling device is as follows:

the propelling device for the self-advancing tunnel boring machine comprises a self-advancing chassis main body, wherein an upper shoe supporting oil cylinder unit and a lower shoe supporting oil cylinder unit which is parallel to the upper shoe supporting oil cylinder unit are arranged on the self-advancing chassis main body; a telescopic shield and a front shield are sequentially arranged at the front part of the self-propelled chassis main body, a driving system is arranged on the telescopic shield, and a propelling unit is arranged between the driving system and the supporting shoes at the two sides of the self-propelled chassis main body; when the propelling unit works, the propelling units positioned at two sides of the self-propelled chassis main body are integrally arranged in a V shape.

The upper part props the structure of boots hydro-cylinder unit and lower part and props the structure of boots hydro-cylinder unit the same, all include two relative boots hydro-cylinders that prop that set up, the cylinder body fixed mounting of each props the boots hydro-cylinder is on advancing the chassis main part by oneself, the body of rod extends to the outside from advancing the chassis main part, with prop boots articulated together.

The propulsion unit comprises a left propulsion unit and a right propulsion unit, and the left propulsion unit and the right propulsion unit are symmetrically arranged along the self-propelled chassis main body; the left propelling unit and the right propelling unit have the same structure and respectively comprise a plurality of propelling cylinders arranged along the vertical direction, and a spherical hinge joint is arranged on the cylinder body of each propelling cylinder and is hinged in a spherical hinge hole on the supporting shoe; the rod body of each propulsion oil cylinder is hinged on an oil cylinder seat of the driving system.

The invention has the advantages that: the posture of the shield body can be conveniently controlled by utilizing the propulsion oil cylinder, the self-propelled chassis main body is matched, the rapid transition and empty-propelling hole passing efficiency of the whole machine without dismantling (a main drive, a main motor and the propulsion oil cylinder) except the cutter head is realized, and the device is particularly suitable for the working conditions of frequent transition and the like of underground roadways of coal mines and the like, and reduces the transition remanufacturing cost; the high-efficiency tunneling speed can be realized, the safety of operators far away from a working face can be realized, the high-efficiency tunneling machine can adapt to various geologies, the thrust of the oil cylinder is high, and the low-cost safe and quick transition requirement can be realized by disassembling in a small range.

Drawings

Fig. 1 is a schematic view of the main structure of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is a top view of the present invention in operation.

Fig. 5 is a schematic view of the propulsion cylinder of fig. 4 when retracted.

Detailed Description

The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.

Referring to fig. 1 to 5, the present invention relates to a propelling device for a self-propelled roadway excavator, comprising a self-propelled chassis main body 5, wherein an upper shoe-supporting oil cylinder unit and a lower shoe-supporting oil cylinder unit arranged in parallel with the upper shoe-supporting oil cylinder unit are mounted on the self-propelled chassis main body 5, the upper shoe-supporting oil cylinder unit and the lower shoe-supporting oil cylinder unit are both provided with supporting shoes 10, and the supporting shoes 10 at both sides are symmetrically arranged along the self-propelled chassis main body 5; a telescopic shield 2 and a front shield 1 are sequentially arranged at the front part of the self-propelled chassis main body 5, a driving system 7 is arranged on the telescopic shield 2, and a propelling unit is arranged between the driving system 7 and supporting shoes 10 at two sides of the self-propelled chassis main body 5; when the propelling unit works, the propelling units positioned at the two sides of the self-propelled chassis main body 5 are integrally arranged in a V shape.

As shown in fig. 3, the upper shoe supporting cylinder unit and the lower shoe supporting cylinder unit have the same structure and respectively include two shoe supporting cylinders 9 arranged oppositely, a cylinder body of each shoe supporting cylinder 9 is fixedly mounted on the self-propelled chassis main body 5, and a rod body extends to the outside of the self-propelled chassis main body 5 and is hinged to the shoe supporting 10.

As shown in fig. 1 and 2, the propulsion units include a left propulsion unit and a right propulsion unit, which are symmetrically disposed along the self-propelled chassis main body 5; the left propelling unit and the right propelling unit have the same structure and respectively comprise a plurality of propelling cylinders 3 arranged along the vertical direction, and the four propelling units are taken as examples, wherein a cylinder body of each propelling cylinder 3 is provided with a spherical hinge joint which is hinged in a spherical hinge hole on the supporting shoe 10; the rod body of each propulsion cylinder is hinged on a cylinder seat 6 of a driving system 7.

The working principle of the invention is as follows: four oil cylinders are arranged on each supporting shoe, and the left propelling unit and the right propelling unit are arranged in a V shape and are in a spherical hinged mode, so that the vertical and horizontal actions of the posture of the main machine can be realized, and the front shield is prevented from rolling. When the heading machine is propelled, the supporting shoes are spread to abut against the wall of the hole to provide counter force of the propulsion oil cylinder, and the propulsion oil cylinder extends out to provide thrust for heading. When the step is changed, the supporting shoe is retracted, the propelling oil cylinder is retracted, the bottom of the supporting shoe moves forwards from the advancing chassis main body, and the rear matching trolley is driven to move forwards to finish the step change.

When the transition of the roadway driving is completed, the propulsion oil cylinder is retracted, the cutter head is disassembled, the upper half part of the front shield is disassembled, and the rapid transition is completed. The decomposed front shield and cutterhead can be transported to start again by simple remanufacturing, so that the remanufacturing cost of transition is reduced, and the time is saved.

Claims

1. The propelling device for the self-advancing tunnel boring machine is characterized by comprising a self-advancing chassis main body, wherein an upper shoe supporting oil cylinder unit and a lower shoe supporting oil cylinder unit which is parallel to the upper shoe supporting oil cylinder unit are arranged on the self-advancing chassis main body; a telescopic shield and a front shield are sequentially arranged at the front part of the self-propelled chassis main body, a driving system is arranged on the telescopic shield, and a propelling unit is arranged between the driving system and the supporting shoes at the two sides of the self-propelled chassis main body; when the propelling unit works, the propelling units positioned at two sides of the self-propelled chassis main body are integrally arranged in a V shape.

2. The propelling device for a self-propelled tunneling machine according to claim 1, wherein the upper shoe supporting cylinder unit and the lower shoe supporting cylinder unit have the same structure and each comprise two oppositely disposed shoe supporting cylinders, the cylinder body of each shoe supporting cylinder is fixedly mounted on the self-propelled chassis main body, and the rod body extends to the outside of the self-propelled chassis main body and is hinged to the shoe supporting cylinder.

3. The propulsion device for a self-propelled tunneling machine according to claim 1 or 2, wherein the propulsion unit comprises a left propulsion unit and a right propulsion unit, the left propulsion unit and the right propulsion unit being symmetrically disposed along the self-propelled chassis body; the left propelling unit and the right propelling unit have the same structure and respectively comprise a plurality of propelling cylinders arranged along the vertical direction, and a spherical hinge joint is arranged on the cylinder body of each propelling cylinder and is hinged in a spherical hinge hole on the supporting shoe; the rod body of each propulsion oil cylinder is hinged on an oil cylinder seat of the driving system.