WO2019020009A1

WO2019020009A1 - Horseshoe-shaped boring machine propelled by track

Info

Publication number: WO2019020009A1
Application number: PCT/CN2018/096815
Authority: WO
Inventors: 李建斌; 贾连辉; 范磊; 董艳萍
Original assignee: 中铁工程装备集团有限公司
Priority date: 2017-07-27
Filing date: 2018-07-24
Publication date: 2019-01-31
Also published as: CN107218048A; CN107218048B

Abstract

Disclosed is a horseshoe-shaped boring machine propelled by a track, the machine comprising a cutterhead device (1) arranged at the front end, wherein the cutterhead device (1) is mounted on an anterior shield (2) and is connected to a driving system (3) inside the anterior shield (2); a rear portion of the anterior shield (2) is provided with a tail shield (4), and the anterior shield (2) is movably connected to the tail shield (4); the tail shield (4) is connected to a propulsion track (6) provided at the bottom for driving; a rear portion of the cutterhead device (1) is provided with a screw conveyor (8) mounted at the bottom of the anterior shield (2) and at an upper portion of the propulsion track (6); and the tail shield (4) is connected to an equipment bridge (7), and the equipment bridge (7) is provided with a rear associated system (9). The boring machine implements semi-open boring, facilitating the stabilization of an unstable geological face.

Description

[Correction according to Rule 26 10.08.2018] Horseshoe-type roadheader propelled by crawler

Technical field

The present invention relates to tunnel construction equipment, and more particularly to a horseshoe type roadheader propelled by a crawler belt.

Background technique

In the current tunnel construction, the shield technology has been widely used due to its high degree of automation, high construction safety, fast construction progress, low pollution and low cost. Among them, the shield machine is a highly mechanized and automated tunneling lining complete equipment that integrates mechanical, electronic, hydraulic, laser and control technologies using the shield method.

Mountain tunnels such as highways and railways often use horseshoe-shaped sections. Compared with circular tunnels, horseshoe-shaped tunnels have higher space utilization. Horseshoe-shaped tunnel excavation usually uses full-section drilling and blasting method, step method, CD method, CRD method, double-side guide hole method, etc., in order to achieve higher requirements of personnel, construction period, cost control, etc. The technicians have done a lot of research on the improvement of the mechanized construction level of the horseshoe-shaped tunnel, such as:

"A horseshoe-shaped open shield structure and shield construction method", using a horseshoe-shaped section shield structure, using several hydraulic jacks and supporting I-beams to process the detachable reaction system, combined with one During the period of anti-skid and shield body safety, the excavation of the soil is completed. After excavating a paragraph, the reaction system is removed, and the reinforced concrete lining is completed to complete the construction of the tunnel structure;

"A mud-water balanced horseshoe-shaped shield machine" uses a cutter head composed of a circular cutter head and a special-shaped cutter head (eccentric swing) to cut a horseshoe-shaped tunnel, and utilizes the mud-water balance mode to excavate the surface stability;

The equipment of the Horseshoe Shield Excavation Device and Tunnel Excavation Method for Waterless Soft Soil Tunnels refers to the equipment including the mainframe bracket, the upper shield assembly and the side interaction assembly and the step fulfillment assembly, using an excavator or other The excavating function equipment is used for open excavation work, and the synchronous slag discharging device is designed, so that the two processes are simultaneously performed to improve the working efficiency;

"A super-large section horseshoe-shaped shield machine" uses the principle of earth pressure balance to excavate several circular cutterheads with multiple front and rear distributions, and advances the whole machine with the support piece of the latest one ring as the support base; The model has been successfully applied in the Baicheng Tunnel of Menghua Railway;

"A different type of roadheader for single-line soft rock tunnels" uses the principle of earth pressure balance to excavate the cutter heads of the above-mentioned "a large-section horseshoe-shaped shield machine" in a different combination, so that the assembled segments are Support the foundation for the advancement of the whole machine;

"A shield machine for cast-in-situ support for a horseshoe-shaped cross-section tunnel" uses the principle of earth pressure balance to carry out the excavation. The assembled piece that is far away from the main machine is used as a support foundation, relying on the reaction force provided by friction. And through the lever + ball hinge force to carry out the advancement of the whole machine and so on.

Due to the different geological structures of various tunnels in China, the horseshoe-shaped shield machine adopts the earth pressure balance tunneling + prefabricated tube assembly method, and the adaptability is limited. When the local quality is relatively stable, a construction cost is low and no pressure is required. Safe construction equipment.

Summary of the invention

The invention provides a horseshoe-shaped roadheader propelled by a crawler belt, which solves the problem that in the prior art, when the local quality is relatively stable, a construction equipment with low construction cost and no need for pressure keeping is needed. The device is suitable for geological conditions such as loess, silty clay, flowing sand, and fully weathered rock. The tunnel excavation rate is greatly improved, and the synchronous forming of the horseshoe-shaped tunnel excavation and support is realized.

The technical solution of the present invention is achieved by a crawler-propelled horseshoe boring machine comprising a cutter device disposed at a front end, the cutter device being mounted on the front shield and connected to a drive system in the front shield. The rear of the front shield is provided with a tail shield. The front shield is connected with the tail shield. The tail shield is connected with the propeller track at the bottom to provide forward thrust. The rear of the cutter unit is provided with a spiral mounted on the bottom of the front shield and the upper part of the propeller. The conveyor, the tail shield is connected to the equipment bridge, and the equipment bridge is equipped with a rear supporting system.

The cutter device includes a first cutter, a second cutter, a third cutter, a fourth cutter, and an umbrella-shaped eccentric cutter on the same plane, and the second cutter and the first cutter are mounted on a plane On the left and right sides of the lower part, the fourth cutter head and the third cutter head are mounted on the left and right sides of the plane middle portion, and the umbrella-shaped eccentric swing cutter head is mounted on the top of the plane, the first cutter head, the second cutter head, and the third cutter cutter disc The fourth cutter head is a cross-shaped spoke cutter head comprising two long and two short spokes, the two long spokes are on the same straight line, and the two short spokes are on the same straight line.

The rotation angle of the second cutter head is rotated 45° clockwise with respect to the rotation angle of the first cutter head, and the rotation angle of the fourth cutter head is deflected 45° clockwise with respect to the rotation angle of the second cutter head, the third cutter The rotation angle of the disk is rotated 45° clockwise with respect to the rotation angle of the fourth cutter head, and the first cutter, the second cutter, the third cutter, and the fourth cutter are synchronously rotated.

The front shield and the tail shield are horseshoe-shaped shell structures, and the front shield is connected with the tail shield through the hinge system, the bottom of the front shield is sealed, and the bottom of the tail shield is open.

The equipment bridge comprises a temporary support, a retractable rolling support and a bridge body, the front end of the bridge body is connected with the tail shield, the middle part of the bridge body is provided with temporary support, and the tail end of the bridge body is provided with a retractable rolling support.

The rear supporting system includes a belt conveyor, a spray gun manipulator, a steel arch mounting machine, a waterproof board laying machine and a material crane. The belt conveyor is arranged from the rear of the screw conveyor to the tail of the equipment bridge, and the steel arch mounting machine Located in the front part of the equipment bridge, the shotcreting manipulator is set on the steel arch mounting machine, the waterproof board laying machine is located at the rear of the equipment bridge, the material crane is located at the tail of the connecting bridge, and the rear part of the belt conveyor is provided with the conveying slag. Earth truck.

The cutter device of the invention has high excavation rate, adopts semi-open tunneling, which is favorable for the stability of the unstable geological face, and has less thrust than the earth pressure balance mode, and the structure of the front shield and the middle shield is simple, and at the same time The tunnel support can be combined with the new Austrian method. It is occupied by the prefabricated tube site. The slag transportation can be transported by steam. It has the advantages of low overall engineering cost and low technical requirements for construction personnel.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

Figure 1 is a schematic view of the structure of the roadheader.

Figure 2 is a schematic view showing the structure of the cutter head device.

Figure 3 is a cross-sectional view of the propulsion track and the tail shield.

In the figure: 1. Cutter device, 101. First cutter head, 102. Second cutter head, 103. Third cutter head, 104. Fourth cutter head, 105. Umbrella eccentric swing cutter, 2. Front shield 3. Drive system, 4. tail shield, 5. articulated system, 6. propulsion track, 7. equipment bridge, 701. temporary support, 702. retractable rolling support, 703 bridge body, 8. screw conveyor, 9. After supporting system, 901. Belt machine, 902. Shotcrete manipulator, 903. Steel arch mounting machine, 904. Waterproof board laying machine, 905. Material crane, 906. Truck.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

As shown in Figures 1-3, a track-propelled horseshoe boring machine includes a cutter unit 1 disposed at a front end, the cutter unit 1 being mounted on the front shield 2 and a drive system in the front shield 2 3 connection, the rear part of the front shield 2 is provided with a tail shield 4, the front shield 2 is connected with the tail shield 4, and the tail shield 4 is connected with the propulsion crawler 6 which provides the forward thrust at the bottom, and the rear part of the cutter apparatus 1 is installed. At the bottom of the front shield 2 and the screw conveyor 8 at the upper portion of the propeller track 6, the tail shield 4 is connected to the equipment bridge 7, and the equipment bridge 7 is provided with a rear matching system 9.

The cutter device 1 includes a first cutter 101, a second cutter 102, a third cutter 103, a fourth cutter 104, and an umbrella-shaped eccentric cutter 105 in the same plane, and a second cutter 102 and The first cutter disc 101 is mounted on the left and right sides of the lower portion of the plane, the fourth cutter disc 104 and the third cutter disc 103 are mounted on the left and right sides of the plane middle portion, and the umbrella-shaped eccentric swing cutter disc 105 is mounted on the top of the plane, the first cutter The disc 101, the second cutter 102, the third cutter 103, and the fourth cutter 104 are both cross-shaped spoke cutters including two long and two short spokes. The two long spokes are on the same straight line, and the two short spokes are on the same straight line. on.

Based on a certain rotation angle of the first cutter head 101, the rotation angle of the second cutter head 102 is rotated clockwise by 45° with respect to the rotation angle of the first cutter head 101, and the rotation angle of the fourth cutter head 104 is relative to The rotation angle of the second cutter head 102 is deflected by 45° clockwise, and the rotation angle of the third cutter head 103 is rotated clockwise by 45° with respect to the rotation angle of the fourth cutter head 104. The first cutter head 101, the second cutter head 102, and the first The three cutter discs 103 and the fourth cutter discs 104 rotate in synchronization. The four cutter heads rotate at the same speed without mutual interference, thereby achieving synchronous rotary motion in the same plane and improving the excavation ratio.

The front shield 2 and the tail shield 4 are horseshoe-shaped shell structures, the front shield 2 is connected to the tail shield 4 through the hinge system 5, the bottom of the front shield 2 is sealed, the bottom of the tail shield 4 is open, and the tail shield 4 is fixed in advancement. The upper side of the crawler belt 6 supports the soil on the top and both sides of the crawler belt. When the whole machine is driven, the propulsion crawler 6 walks on the bottom opening area of the tail shield 4, that is, the bottom of the bare horseshoe-shaped tunnel, and the friction reaction force is used as the cutter device 1 Provide thrust.

The device bridge 7 includes a temporary support 701, a retractable rolling support 702 and a bridge body 703. The front end of the bridge body 703 is connected with the tail shield 4, and the middle portion of the bridge body 703 is provided with a temporary support 701, and the tail end of the bridge body 703 is provided. There is a retractable rolling support 702.

The rear matching system 9 includes a belt conveyor 901, a shotcrete robot 902, a steel arch mounting machine 903, a waterproof board laying machine 904, and a material crane 905. The belt conveyor 901 is disposed from the rear of the screw conveyor 8 to the equipment bridge. At the tail of 7, the steel arch mounting machine 903 is disposed at the front of the equipment bridge 7, the shot blasting robot 902 is disposed on the steel arch mounting machine 903, and the waterproof board laying machine 904 is disposed at the rear of the equipment bridge 7, the material crane 905 is provided at the tail of the connecting bridge 7, and a truck 906 for transporting muck is provided at the rear of the belt conveyor 901.

The working flow of the present invention is as follows: the roadheader of the present application is mainly used for semi-opening and open tunneling, the cutter unit 1 is powered by the drive system 3, and the cross-shaped spoke cutter is synchronized with the initial phase position. When the hour hand rotates the cutting soil, the eccentric oscillating cutter head 105 eccentrically rotates and loosens the soil, and the cut slag is uniformly stirred by the cutter spokes and the stirring rod, and then the slag is conveyed to the belt conveyor 901 through the screw conveyor 8. It is then transported to truck 906 and transported outside the cave. The propelling track 6 transmits the forward thrust from the steel structure of the tail shield 4 to the front shield 2 through the hinge system 5, and then to the cutter unit 1, which is disposed at the front end of the equipment bridge and the rear end of the cutter head. Provides power with the friction of the ground, provides more direct support to the cutter head, is not interfered by the intermediate equipment, and has stronger force. At the same time, it can be affected by the solidification time of the initial support concrete and improve the efficiency of the construction. To fine-tune the digging direction of the shield machine, so reciprocating. The front shield 2 and the tail shield 4 support the inner wall of the excavated tunnel. On the equipment bridge 7 at the rear of the tail shield 4, the steel arch mounting machine 903 is responsible for supporting the inner wall of the tunnel which is barely exposed, and then supporting the arch frame, and then The first lining of the inner wall of the tunnel is completed by the spray gun manipulator 902, and then the first lining tunnel is waterproofed by the waterproof board laying machine 904. Finally, the tire passing through the retractable rolling support 702 is closely attached to the inner wall of the tunnel of the first lining, and the length of the telescopic length is adjusted. To improve the spatial positional relationship between the propulsion track 6 and the equipment bridge 7, to improve the stability of the host.

The cutter device of the invention has high excavation rate, adopts semi-open tunneling, which is favorable for the stability of the unstable geological face, and has less thrust than the earth pressure balance mode, and the structure of the front shield and the middle shield is simple, and at the same time The initial lining of the tunnel can be combined with the new Austrian method or on-site pouring. It is occupied by the prefabricated tube site. The slag transportation can be transported by steam, which has the advantages of low overall engineering cost and low technical requirements for construction personnel.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

A track-propelled horseshoe boring machine comprising a cutter device (1) disposed at a front end, wherein the cutter device (1) is mounted on the front shield (2) and with the front shield (2) The inner drive system (3) is connected, the front shield (2) is provided with a tail shield (4) at the rear, the front shield (2) is connected with the tail shield (4), and the tail shield (4) and the bottom provide forward thrust. The propeller track (6) is connected, and the rear part of the cutter unit (1) is provided with a screw conveyor (8), a tail shield (4) and a device bridge installed at the bottom of the front shield (2) and the upper portion of the propulsion track (6). (7) Connection, equipment bridge (7) is equipped with rear supporting system (9).
The track-propelled horseshoe boring machine according to claim 1, wherein said cutter unit (1) comprises a first cutter head (101), a second cutter head (102), and a first plane. a three-cutter disc (103), a fourth cutter disc (104) and an umbrella-shaped eccentric oscillating cutter disc (105), the second cutter disc (102) and the first cutter disc (101) are mounted on the left and right sides of the lower plane, The four cutter discs (104) and the third cutter discs (103) are mounted on the left and right sides of the plane in the middle, and the umbrella-shaped eccentric swing cutter disc (105) is mounted on the top of the plane, the first cutter head (101) and the second cutter head (102), the third cutter head (103), and the fourth cutter head (104) are both cross-shaped spoke cutter heads including two long and two short spokes, the two long spokes are on the same straight line, and the two short spokes are on the same straight line. .
The track-propelled horseshoe boring machine according to claim 2, wherein the rotation angle of the second cutter head (102) is 45° clockwise with respect to the rotation angle of the first cutter head (101), The rotation angle of the fourth cutter head (104) is deflected 45° clockwise with respect to the rotation angle of the second cutter head (102), and the rotation angle of the third cutter head (103) relative to the rotation angle of the fourth cutter head (104) The first cutter head (101), the second cutter head (102), the third cutter head (103), and the fourth cutter head (104) are synchronously rotated by 45° clockwise.
The track-propelled horseshoe boring machine according to claim 1, wherein the front shield (2) and the tail shield (4) are both horseshoe-shaped shell structures, and the front shield (2) passes through the hinge system (5). ) Connected to the tail shield (4), the bottom of the front shield (2) is sealed, and the bottom of the tail shield (4) is open.
The track-propelled horseshoe boring machine according to claim 1, wherein the equipment bridge (7) comprises a temporary support (701), a retractable rolling support (702) and a bridge body (703), the bridge body The front end of the (703) is connected to the tail shield (4), the middle portion of the bridge body (703) is provided with temporary support (701), and the rear end of the bridge body (703) is provided with a retractable rolling support (702).
The track-propelled horseshoe boring machine according to claim 1, wherein said rear matching system (9) comprises a belt conveyor (901), a shotcreting robot (902), and a steel arch mounting machine (903). , waterproof board laying machine (904) and material crane (905), belt conveyor (901) from the rear of the screw conveyor (8) to the tail of the equipment bridge (7), steel arch mounting machine (903) At the front of the equipment bridge (7), the shotcreting robot (902) is placed on the steel arch mounting machine (903), and the waterproof board laying machine (904) is located at the rear of the equipment bridge (7), the material crane ( 905) is provided at the tail of the connecting bridge (7), and a truck (906) for transporting muck is provided at the rear of the belt conveyor (901).