CN211287687U

CN211287687U - Rock cracking type tunnel boring machine

Info

Publication number: CN211287687U
Application number: CN202020058047.4U
Authority: CN
Inventors: 谭立平; 张志华; 索继生; 孙龙
Original assignee: Zhengzhou New Dafang Heavy Industries and Technology Co Ltd
Current assignee: Zhengzhou New Dafang Heavy Industries and Technology Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-08-18
Anticipated expiration: 2030-01-13

Abstract

A rock-cracking type tunnel boring machine comprises a crawler chassis, a boom system, a vibration rock cracking device, a supporting system, a slag discharging system, a control system and a hydraulic system, wherein the boom system comprises a pitching seat arranged at the front end of the crawler chassis through a hinge shaft and a pitching oil cylinder, a yawing seat combined with the pitching seat through a rotary seat, a large boom combined with the yawing seat through a left-right yawing oil cylinder and a hinge piece, a small boom arranged at the front end of the large boom through a hydraulic oil cylinder and a hinge piece, the vibration rock cracking device arranged at the front end of the small boom through the hydraulic oil cylinder and the hinge piece, and a visual monitoring device arranged at the front end of the small boom; the support system comprises left and right telescopic tunnel wall support frames positioned on the two sides of the middle part of the crawler chassis and variable amplitude support legs positioned on the left and right sides of the rear part of the crawler chassis; the slag discharging system comprises a digging shovel positioned at the front lower end of the crawler chassis and a slag conveying device positioned at the rear part of the digging shovel and extending to the upper part of the rear part of the crawler chassis from front to back.

Description

Rock cracking type tunnel boring machine

Technical Field

The utility model relates to a split rock formula tunnel boring machine, concretely relates to a heading equipment that is used for non-blasting excavation in tunnel to use.

Background

In recent years, a large number of railways and highways are built, tunnels under various conditions appear, and meanwhile, the influence on production and life in the construction process is increased day by day, so that the traditional tunnel construction technology (blasting method) cannot meet the requirement of special tunnel construction. In the traditional construction, a blasting method is mostly adopted in the construction of harder surrounding rock tunnels, if the surrounding environment is complex, particularly when the tunnel passes through a city area, the tunnel is close to a dense residential area, buildings are dense, and the vibration in the construction process needs to be strictly controlled so as to prevent the influences of disturbing residents, vibration cracking of buildings on the overlying ground surface and the like. Especially, the current explosive control is strict, the environmental protection requirement is improved, many projects are subject to the initiating explosive management and the environmental protection requirement, and the construction time cannot be ensured.

The non-blasting excavation method is one of the methods for avoiding the problems, and is a construction method which can not be carried out by corresponding equipment through a blasting mode due to the influences of factors such as the surrounding environment, the management requirement, the surrounding rock conditions and the like. The method mainly comprises a full-section tunneling machine method, a static blasting method, a hydraulic impact hammer method, a splitting method and the like.

The existing non-blasting excavation mainly comprises a cantilever type tunnel boring machine, an excavator after a swelling method, an excavator with a breaking hammer (soil cracking device) of the excavator and the like. The cantilever type tunnel boring machine has the disadvantages of large construction dust, low working efficiency and continuous water spraying operation; an excavator is used after the expansion crack method, expansion crack punching needs to be additionally provided with drilling equipment, and due to the insufficient freedom degree of an arm support of the excavator, the operation of the local position of the section of the tunnel cannot be reached; the excavator with breaking hammer (ripper) can not realize the excavation of plumb surface because the main function of the excavator is to excavate the ground.

Disclosure of Invention

The purpose of the utility model is to provide a split rock type tunnel boring machine mainly aiming at the tunnel boring construction under loess or III, IV, V level surrounding rock condition aiming at the weak point that exists among the above-mentioned prior art.

The utility model discloses a split rock formula tunnel boring machine is applied to in the construction, and when the country rock condition was fit for excavating, directly excavate and transport the muck to the transport vechicle at equipment rear with slag discharging system. When the surrounding rock is not suitable for direct excavation, the surrounding rock is excavated after being broken and loosened by vibration. The method only splits the large rock mass but not crushes the large rock mass in the excavation process, so the method has the advantages of low energy consumption, small dust, high construction efficiency, environmental protection and economy.

The purpose of the utility model is realized by the following technical measures:

the utility model discloses a split rock formula tunnel boring machine includes track chassis, cantilever crane system, vibration rock cracking ware, braced system, slag system, control system, hydraulic system, the cantilever crane system includes through the hinge, pitch the hydro-cylinder and install the pitching seat at track chassis front end, through the swing seat with pitch the seat combined yaw seat, through the big cantilever crane of side-to-side yaw hydro-cylinder and articulated elements and combining with the yaw seat, install the little cantilever crane at big cantilever crane front end through hydraulic cylinder and articulated elements, install the vibration rock cracking ware at little cantilever crane front end through hydraulic cylinder and articulated elements to and set up the vision monitoring camera at little cantilever crane front end; the support system comprises left and right telescopic tunnel wall support frames positioned on the two sides of the middle part of the crawler chassis and variable amplitude support legs positioned on the left and right sides of the rear part of the crawler chassis; the slag discharging system comprises a digging shovel positioned at the front lower end of the crawler chassis and a slag conveying device positioned at the rear part of the digging shovel and extending to the upper part of the rear part of the crawler chassis from front to back.

The utility model discloses a telescopic tunnel wall support frame comprises a telescopic outer sleeve, a telescopic inner sleeve and a support boot positioned at the end part of the telescopic inner sleeve; the variable-amplitude supporting leg comprises a horizontal supporting leg and a supporting oil cylinder, wherein the horizontal supporting leg is combined with the crawler chassis through a hinge piece, the variable-amplitude oil cylinder is vertically arranged at the bottom of the extending end of the supporting leg, and the supporting oil cylinder is provided with a supporting shoe.

The control system adopts a remote controller to operate the remote control mechanism.

Furthermore, each action of the arm support system is driven by a hydraulic oil cylinder or a motor, and a working power source is an electric motor to drive a hydraulic pump. The walking part is powered by a hydraulic pump driven by a diesel engine. The support system is hydraulically operated.

The utility model has the advantages as follows:

the utility model discloses a multi freedom cantilever crane system combines together with the vibration rock cracking ware, has realized each direction and has excavated. The stable work is ensured through the supporting system. The slag tapping system is equipped for continuous operation. The crawler chassis meets the walking condition of the road surface of a construction site, and the equipment moves freely. The tunnel excavation adopts excavation after crushing, the generated dust is small, and the excavation efficiency is high.

Drawings

Fig. 1 is a schematic view of the overall structure.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic view of a boom system.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a left side view of fig. 3.

FIG. 6 is a schematic view of a support system.

Fig. 7 is the utility model discloses a split rock formula tunnel boring machine is applied to the schematic diagram of railway single line tunnel construction tunnelling operation.

Number in the figure: the device comprises a vibration rock cracking device 1, a small arm support 2, a large arm support 3, a deflection seat 4, a rotation seat 5, a pitching seat 6, a slag discharging system 7, a crawler chassis 8, a supporting system 9, a visual monitoring camera 10, a hydraulic oil cylinder I installed on the arm support 11, a hydraulic oil cylinder II installed on the arm support 11-1, a pitching oil cylinder 12, a left deflection oil cylinder and a right deflection oil cylinder 13, a supporting oil cylinder 14, a left telescopic tunnel wall supporting frame and a right telescopic tunnel wall supporting frame 15 and a tunnel wall 16.

Detailed Description

The invention will be further described with reference to the following examples (drawings):

as shown in fig. 1 and 2, the rock-cracking tunnel boring machine of the present invention comprises a crawler chassis 8, an arm support system, a vibration rock cracking device 1, a support system 9, a slag discharging system 7, a control system and a hydraulic system; the arm support system comprises a pitching seat 6, a deflection seat 4, a large arm support 3, a small arm support 2, a vibration rock cracking device 1 and a visual monitoring camera 10 (see 3, 4 and 5), wherein the pitching seat 6 is installed at the front end of a crawler chassis through a hinged shaft and a pitching oil cylinder 12; the support system comprises left and right telescopic tunnel wall support frames 15 positioned at the two sides of the middle part of the crawler chassis 8 and variable amplitude support legs positioned at the left and right sides of the rear part of the crawler chassis (see fig. 2 and 6); the slag discharging system comprises a digging shovel positioned at the front lower end of the crawler chassis and a slag conveying device positioned at the rear part of the digging shovel and extending to the upper part of the rear part of the crawler chassis from front to back.

The telescopic tunnel wall support frame 15 in the support system 9 of the utility model comprises a telescopic outer sleeve, a telescopic inner sleeve and a support shoe positioned at the end part of the telescopic inner sleeve; the variable-amplitude supporting leg comprises a horizontal supporting leg and a supporting oil cylinder 14, wherein the horizontal supporting leg is combined with the crawler chassis through a hinge piece, the variable-amplitude oil cylinder and the crawler chassis, and the supporting oil cylinder is vertically arranged at the bottom of the extending end of the supporting leg and provided with a supporting shoe. The system enables the complete machine to be supported reliably on the tunnel wall 16 and the ground.

The utility model discloses in control system adopts remote controller operation remote control mechanism.

The whole machine of the utility model adopts the supporting system to be firmly supported on the tunnel wall; when in tunneling work, the power is electric and the remote control is carried out; the transition running adopts the power of a diesel engine. The vibration rock cracking device arranged at the front end of the heading machine can effectively crack rocks and dig out the rocks from a rock stratum under the combined action of the arm support and the adjustable hydraulic vibration system. By means of visual monitoring, an operator can carry out remote control operation, and the single-person operation of the whole machine can be realized. In order to balance the working load of the front-end vibration rock cracking device and enable the whole machine to work stably, a supporting system is adopted to firmly support the whole machine on the tunnel wall. The multi-arm support mechanism has posture adjusting modes of swinging, rotating, pitching and the like, so that horizontal plane excavation can be realized, and plumb surface excavation can also be realized. (see fig. 6, 7).

Claims

1. The utility model provides a split rock formula tunnel boring machine, includes track chassis, cantilever crane system, vibration split rock ware, braced system, slag system, control system, hydraulic system, its characterized in that: the arm frame system comprises a pitching seat arranged at the front end of a crawler chassis through a hinge shaft and a pitching oil cylinder, a deflection seat combined with the pitching seat through a rotary seat, a large arm frame combined with the deflection seat through a left deflection oil cylinder, a right deflection oil cylinder and a hinge piece, a small arm frame arranged at the front end of the large arm frame through a hydraulic oil cylinder and a hinge piece, a vibration rock cracking device arranged at the front end of the small arm frame through the hydraulic oil cylinder and the hinge piece, and a visual monitoring camera arranged at the front end of the small arm frame; the support system comprises left and right telescopic tunnel wall support frames positioned on the two sides of the middle part of the crawler chassis and variable amplitude support legs positioned on the left and right sides of the rear part of the crawler chassis; the slag discharging system comprises a digging shovel positioned at the front lower end of the crawler chassis and a slag conveying device positioned at the rear part of the digging shovel and extending to the upper part of the rear part of the crawler chassis from front to back.

2. A split-rock tunnel boring machine according to claim 1, wherein: the telescopic tunnel wall support frame comprises a telescopic outer sleeve, a telescopic inner sleeve and a support shoe positioned at the end part of the telescopic inner sleeve; the variable-amplitude supporting leg comprises a horizontal supporting leg and a supporting oil cylinder, wherein the horizontal supporting leg is combined with the crawler chassis through a hinge piece, the variable-amplitude oil cylinder is vertically arranged at the bottom of the extending end of the supporting leg, and the supporting oil cylinder is provided with a supporting shoe.

3. A split-rock tunnel boring machine according to claim 1, wherein: the control system adopts a remote control mechanism operated by a remote controller.