CN214464185U

CN214464185U - Excavation device of half-horse shield machine and horseshoe-shaped section shield machine

Info

Publication number: CN214464185U
Application number: CN202120213561.5U
Authority: CN
Inventors: 李建斌; 董艳萍; 王小涛; 安乐乐; 刘娇; 范磊; 林智韬
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-10-22
Anticipated expiration: 2031-01-26

Abstract

The utility model provides a half horse shield constructs excavation device and the section of a hoof shape shield of machine constructs machine, and half horse shield constructs the excavation device of machine and includes: a shield body; the tool pan, install on the shield body and be located the lower part of shield body cross section, the tool pan includes: the middle cutter head rotates 360 degrees along an axis extending in the front-back direction to excavate the middle of the lower half part of the horseshoe-shaped section in the left-right direction; wing portion blade disc, including left wing portion blade disc and right wing portion blade disc, set up respectively in the upper left side and the upper right side of middle part blade disc, the axis that wing portion blade disc extends along the fore-and-aft direction is at the reciprocating swing of settlement angle within range, and wing portion blade disc includes a plurality of sword beams, and the length that wherein has at least one sword beam is greater than other sword beams and forms long sword beam to left wing and right wing of excavation horseshoe shape section the latter half. The utility model discloses in adopt the form of middle part blade disc + two alar part blade discs, simple structure, cutting repeat area is few, and has reduced the excavation blind area through the long sword roof beam of alar part blade disc.

Description

Excavation device of half-horse shield machine and horseshoe-shaped section shield machine

Technical Field

The utility model relates to a shield constructs quick-witted technical field, concretely relates to half horse shield constructs excavation device and U-shaped section shield structure machine of machine.

Background

In the present mountain tunnel construction, a drilling and blasting method, a step method, a three-step method, a double-side wall pilot tunnel method, a middle partition (CD) method, a cross middle partition (CRD) method, and the like are frequently used. Most of the support devices adopt anchor rods and sprayed concrete to support tunnels and control deformation and relaxation of surrounding rocks. However, if a fault fracture zone is encountered in the construction process, because the geology has the characteristics of poor rock mass stability, low strength, poor water permeability, easy deformation, poor compressibility and the like, the surrounding rock structure is extremely unstable, the self-bearing capacity is weak, accidents such as collapse, roof collapse and the like can often occur, and great influence is caused on the tunnel construction safety.

The shield method construction method that domestic and foreign professional technical personnel adopted the horseshoe tunnel has carried out a large amount of research, for example, chinese utility model patent that the publication number is CN211924170U discloses an excavation device and entry driving machine of half horse shield structure machine, the excavation device is including setting up at shield body cross section upper portion digging arm device and setting up the rotatory cutter head device of combination formula in shield body cross section lower part, combination formula rotatory cutter head device is connected with the actuating system who sets up in the shield body, combination formula rotatory cutter head device includes the preceding combination cutter head group that two back auxiliary cutter heads and a plurality of preceding cutter heads are constituteed, preceding combination cutter head is located the place ahead of back auxiliary cutter head, each preceding cutter head is located the coplanar. The front cutter head comprises a main shaft sleeve and cutter beams arranged on the main shaft sleeve in a Y-shaped mode, cutters are arranged on the cutter beams, and the cutter beams of adjacent front cutter heads are arranged in a staggered mode and are opposite in turning direction.

The excavating device can excavate the horseshoe-shaped tunnel by matching the excavating arm device and the combined rotary cutter head device together, the upper half part of the excavating device is the excavating arm, only the lower half part of the excavating device is the cutter head, and the excavating device is equivalent to a half-open type horseshoe-shaped section shield tunneling machine, so the excavating device is called as a half-horse shield tunneling machine. However, the front cutterheads in the combined rotary cutterhead device are staggered in parallel, so that the structure is complex, the cutting area is more repeated, the effective utilization rate of the cutterheads is low, a plurality of excavation dead zones exist, and the using effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an excavating device of a half-horse shield machine, which solves the problems of complex structure, large cutting repeat area and more excavating blind areas of the existing excavating device; an object of the utility model is to provide a horse shoe shape section shield constructs machine to solve the excavation device structure among the current shield structure machine complicated, the cutting repeat area is big, the many problem of excavation blind area.

In order to achieve the above object, the utility model provides a half horse shield constructs excavation device of machine adopts following technical scheme:

an excavation device of a half horse shield machine, comprising:

a shield body;

the combined cutter head is arranged on the shield body and is positioned at the lower part of the cross section of the shield body;

the tool head comprises:

the middle cutter head is used for rotating 360 degrees along an axis extending in the front-back direction so as to excavate the middle of the lower half part of the horseshoe-shaped section in the left-right direction;

the alar part blade disc, the alar part blade disc includes left wing portion blade disc and right alar part blade disc, left wing portion blade disc sets up in the upper left side of middle part blade disc, right alar part blade disc sets up in the upper right side of middle part blade disc, left wing portion blade disc and right alar part blade disc are used for respectively along the axis reciprocating swing of fore-and-aft direction extension at the settlement angle within range, left wing portion blade disc and right alar part blade disc all include a plurality of sword beams, the length that all has at least one sword beam in left wing portion blade disc and the right alar part blade disc is greater than other sword beams and forms long sword beam, left wing and the right wing with excavation horseshoe shape section the latter half.

The beneficial effects of the above technical scheme are that: the middle cutter head is positioned in the middle and rotates 360 degrees, and the middle of the lower half part of the horseshoe-shaped section in the left-right direction can be excavated; the left wing part cutter disc and the right wing part cutter disc are respectively positioned at the left upper part and the right upper part of the middle cutter disc, are respectively provided with at least one long cutter beam and can swing in a reciprocating mode within a set angle range, and therefore the left wing and the right wing of the lower half portion of the horseshoe-shaped section can be excavated.

The utility model discloses in adopt the form of middle part blade disc + two alar part blade discs, simple structure, cutting repeat area is few, has improved the effective utilization ratio of blade disc to long sword roof beam through on two alar part blade discs has reduced the excavation blind area.

Furthermore, in order to improve the structural strength of the wing part cutter head, two long cutter beams are arranged in the left wing part cutter head and the right wing part cutter head, and a reinforcing beam is connected between the two long cutter beams.

Furthermore, in order to improve the reinforcing effect, the reinforcing beam comprises two arc-shaped beams arranged at intervals and a connecting beam connected between the two arc-shaped beams, and two ends of each arc-shaped beam are fixedly connected with the two long knife beams respectively.

Further, in order to guarantee excavation efficiency and excavation area, the left wing portion cutter disc and the right wing portion cutter disc respectively comprise six cutter beams which are uniformly distributed on the circumference, wherein the rest four cutter beams except the two long cutter beams are short cutter beams, and the lengths of the short cutter beams are equal.

Furthermore, in order to make structural layout reasonable, improve excavation efficiency, left wing portion blade disc and right wing portion blade disc are located the coplanar, and left wing portion blade disc and right wing portion blade disc are located the rear of middle part blade disc.

Furthermore, for the convenience of excavating the first half of the horseshoe-shaped section, a beam is fixed at the middle of the cross section of the shield body in the shield body, the excavating device of the half-horse shield machine further comprises an excavator which is installed on the beam and located on the upper portion of the cross section of the shield body, the excavator is used for excavating the first half of the horseshoe-shaped section, the excavator comprises a rotating base and a mechanical arm, the rotating base is fixed on the beam, one end of the mechanical arm is installed on the rotating base, and the other end of the mechanical arm is connected with an excavating head.

Further, in order to simplify the structure, reduce the excavation blind area, the middle part blade disc only has one and is located the positive centre of shield body cross section lower part.

In order to achieve the purpose, the utility model provides a U-shaped section shield constructs machine adopts following technical scheme:

the utility model provides a horse-shoe section shield constructs machine, includes excavation device, and excavation device includes:

a shield body;

the tool head comprises:

Further, for the convenience of excavating the first half of the horseshoe-shaped section, a beam is fixed at the middle of the cross section of the shield body in the shield body, the excavating device further comprises an excavator which is installed on the beam and located on the upper portion of the cross section of the shield body, the excavator is used for excavating the first half of the horseshoe-shaped section, the excavator comprises a rotating base and a mechanical arm, the rotating base is fixed on the beam, one end of the mechanical arm is installed on the rotating base, and the other end of the mechanical arm is connected with an excavating head.

Furthermore, in order to conveniently remove the slag, the shield tunneling machine with the horseshoe-shaped section further comprises a slag removing device, and the slag removing device comprises a conveyor arranged on the back face of the combined cutter head and a manipulator used for scraping the slag soil onto the conveyor.

Furthermore, in order to facilitate the manipulator to scrape the muck onto the conveyor, the front end of the conveyor gradually inclines downwards from back to front and props against the bottom of the shield body.

Drawings

FIG. 1 is a front view of a shield tunneling machine with a U-shaped cross section according to the present invention;

fig. 2 is a side view of the shield tunneling machine with a horseshoe-shaped cross section according to the present invention.

In the figure: 1-an excavator; 11-a rotating base; 12-a robotic arm; 13-excavating a head; 2-a cutterhead; 21-a middle cutter head; 211-front blade beam; 22-left wing cutter head; 221-rear long tool beam; 222-rear short beam; 223-an arc beam; 224-connecting beam; 23-right wing cutterhead; 3-shield body; 31-a cross beam; 4-a drive system; 5-a manipulator; 6-conveyor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses an embodiment of well shape of a hoof section shield constructs machine is shown in fig. 1 and fig. 2, including the excavation device, the excavation device includes the shield body 3 and fixes in the shield body 3 and be located the crossbeam 31 at the middle part of the 3 cross sections of shield body, the excavation device is still including installing excavator 1 on crossbeam 31 and being located the 3 cross sections upper portions of shield body, excavator 1 is used for excavating the first half of the shape of a horse hoof. Specifically, excavator 1 includes rotating base 11 and arm 12, and rotating base 11 fixes on crossbeam 31, and the one end of arm 12 is installed on rotating base 11, and the other end of arm 12 is connected with excavation head 13, and under rotating base 11's effect, arm 12 can the horizontal hunting, and arm 12 can drive excavation head 13 and carry out the multi freedom motion simultaneously, and the excavation is nimble, can realize the excavation in great scope, satisfies the excavation needs of various angles. In addition, in order to ensure the excavation area and the excavation efficiency and facilitate excavation of the upper half part of the horseshoe-shaped section, two excavators 1 are arranged, and the two excavators 1 are arranged at intervals left and right and symmetrically, as shown in fig. 2.

The excavation device further comprises a combined cutter head 2 which is arranged on the shield body 3 and is positioned on the lower portion of the cross section of the shield body 3, the excavation device further comprises a driving system 4 which is arranged in the shield body 3, and the driving system 4 is in transmission connection with the combined cutter head 2 so as to drive the combined cutter head 2 to rotate.

Specifically, the cutterhead 2 includes a middle cutterhead 21 and a wing cutterhead, only one of the middle cutterhead 21 is located in the middle of the lower portion of the cross section of the shield body 3, and the middle cutterhead rotates 360 degrees along an axis extending in the front-back direction under the action of the driving system 4 so as to excavate the middle portion of the lower half portion of the horseshoe-shaped cross section in the left-right direction. The middle cutter disc 21 comprises five front cutter beams 211 which are equal in length and are circumferentially and uniformly distributed, a cutter is mounted on each front cutter beam 211, and the maximum rotation diameter of the middle cutter disc 21 is equal to the height of the lower half part of the horseshoe-shaped section so as to ensure the maximum excavation area.

The wing part cutter disc is arranged behind the middle cutter disc 21 and comprises a left wing part cutter disc 22 and a right wing part cutter disc 23, the left wing part cutter disc 22 is arranged above the left back of the middle cutter disc 21, the right wing part cutter disc 23 is arranged above the right back of the middle cutter disc 21, and the left wing part cutter disc 22 and the right wing part cutter disc 23 are arranged in the same plane and in bilateral symmetry. Under the action of the drive system 4, the left wing cutter disc 22 and the right wing cutter disc 23 respectively oscillate back and forth within a set angular range along the axes extending in the front-rear direction.

As shown in fig. 2, the left wing cutter head 22 and the right wing cutter head 23 both include six cutter beams uniformly distributed around the circumference, taking the left wing cutter head 22 as an example, two cutter beams of the six cutter beams of the left wing cutter head 22 are longer than other cutter beams to form a rear long cutter beam 221, the other four cutter beams except the two rear long cutter beams 221 are rear short cutter beams 222, each rear short cutter beam 222 has the same length, the two rear long cutter beams 221 have the same length, and the two rear long cutter beams 221 are arranged on the left side of the lower half of the horseshoe-shaped cross section to excavate the left wing of the lower half of the horseshoe-shaped cross section, and similarly, the two long cutter beams on the right wing cutter head 23 are used for excavating the right wing of the lower half of the horseshoe-shaped cross section.

Since the two long tool beams are long and are stressed greatly, in order to improve the structural strength of the wing cutterhead, taking the left wing cutterhead 22 as an example, a reinforcing beam is connected between the two rear long tool beams 221, the reinforcing beam comprises two arc-shaped beams 223 arranged at intervals and a connecting beam 224 connected between the two arc-shaped beams 223, and two ends of each arc-shaped beam 223 are fixedly connected with the two rear long tool beams 221 respectively.

The utility model discloses well combination formula blade disc 2's middle part blade disc and alar part blade disc are not in the coplanar, and the middle part blade disc is in the front, and alar part blade disc is behind, mutually independent, mutually noninterfere, and two alar part blade disc intervals set up simultaneously, and two alar part blade discs are only at the reciprocal swing of settlement angle within range, can carry out comprehensive noninterference excavation to the face, improve excavation efficiency.

The shield tunneling machine with the horseshoe-shaped cross section further comprises a slag discharging device, as shown in fig. 1 and 2, the slag discharging device comprises a conveyor 6 arranged on the back surface of the combined cutter head 2 and a manipulator 5 used for scraping the slag soil onto the conveyor 6. The two sets of slag discharging devices are symmetrically arranged at the bottom of the shield body 3 and are positioned below the junction part of the middle cutter head 21 and the left wing cutter head 22 and the right wing cutter head 23 respectively. Specifically, conveyer 6 adopts scraper conveyor, and scraper conveyor sets up lower part in the collection sediment mouth of 3 cross sections bottoms of shield body, and manipulator 5 sets up the collection sediment mouth upper portion of 3 cross sections bottoms of shield body, and manipulator 5 is scraped the dregs and is transported away by scraper conveyor to collection sediment mouth to for the convenience to scrape the sediment, conveyer 6's front end is by backward downward sloping forward gradually and contradict in 3 bottoms of shield body.

The working process of the shield tunneling machine with the horseshoe-shaped section is as follows:

as in the excavator 1 in fig. 1, the excavating head 13 of the excavator 1 extends upward and forward, is inserted into the face of a tunnel, removes the soil from the face of the tunnel by a grabbing and lifting action, rotates the base 11 to adjust the position of the fulcrum of the mechanical arm 12 and the left and right extending angle of the mechanical arm 12, repeats the above actions, and excavates the upper half of the whole face of the tunnel.

As in the cutterhead of fig. 2, assuming that the middle cutterhead 21 rotates counterclockwise around its central axis, the left wing cutterhead 22 and the right wing cutterhead 23 swing up and down around their axes, the middle cutterhead and the wing cutterhead are located on different planes, independent from each other, and do not interfere with each other; the cutterhead crushes, filters and stirs the crushed stone, and thus, the three cutterheads jointly fit and excavate the lower half part of the horseshoe-shaped section.

As shown in fig. 1, in the slag discharging device, the slag soil at the bottom of the shield body falling after the tunnel face is excavated is accumulated near the conveyor 6 by self weight, and on the other hand, the slag soil is gathered by the slag removing mechanical arm 5 and then is conveyed out of the tunnel face by the scraper conveyor.

The utility model is suitable for geology such as loess, clay, the excavator device excavation section is preceding, and combination formula blade disc device excavation section is back, forms the step, has increased excavation working face area, and the front and back interference is little, is favorable to the face to be stable; the slag discharging devices are arranged on two sides of the bottom, so that the slag discharging efficiency is improved; the construction cost is reduced, and the construction safety is improved. And the combined cutter head adopts the form of the middle cutter head and the two wing cutter heads, the structure is simple, the cutting repetition area is small, the effective utilization rate of the cutter head is improved, and the excavation blind areas are reduced by reducing the number of the cutter heads and the long cutter beams on the two wing cutter heads.

In other embodiments of the horseshoe-shaped shield machine, the conveyor may also be a screw conveyor or a belt conveyor.

In other embodiments of the horseshoe shield machine, the front end of the conveyor may also be arranged horizontally.

In other embodiments of the horseshoe shield machine, the tapping device may not include a robot.

In other embodiments of the shield tunneling machine with the horseshoe-shaped cross section, two middle cutterheads can be arranged, the two middle cutterheads are arranged left and right, and the cutter beams are arranged in a staggered mode and are opposite in rotation direction.

In other embodiments of the shield tunneling machine with the horseshoe-shaped cross section, the shield body may not be provided with a beam and an excavator, for example, the excavating device excavates by fully depending on the rotary cutter head, that is, the cutter head is also arranged on the upper portion of the cross section of the shield body.

In other embodiments of the horseshoe-shaped cross-section shield tunneling machine, the left wing cutterhead and the right wing cutterhead may not be in the same plane, and of course, the left wing cutterhead and the right wing cutterhead may also be arranged in front of the middle cutterhead.

In other embodiments of the horseshoe-shaped section shield tunneling machine, the number of the cutter beams of the left wing cutter head and the right wing cutter head is not six, but is set according to actual conditions, but at least the number of the cutter beams is ensured to meet the requirement that the left wing cutter head and the right wing cutter head can be normally excavated when swinging within a set angle.

In other embodiments of the horseshoe shield machine, the stiffening beam may be only an arc beam or a straight connecting beam.

In other embodiments of the shield tunneling machine with the horseshoe-shaped section, the reinforcing beam is not needed when the strength of the cutterhead is sufficient.

In other embodiments of the horseshoe-shaped cross-section shield tunneling machine, the number of the long cutter beams of the left wing cutterhead and the right wing cutterhead is not two, for example, only one, or the number is set according to actual conditions.

The utility model discloses well half horse shield constructs the embodiment of the excavation device of machine does: the specific structure of the excavating device of the half horse shield machine is the same as that of the excavating device in the horseshoe-shaped section shield machine embodiment, and the detailed description is omitted here.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. An excavation device of a half horse shield machine, comprising:

a shield body;

it is characterized in that the tool head comprises:

2. The excavating device of the semi-horse shield tunneling machine according to claim 1, wherein there are two long cutter beams in each of the left wing cutter head and the right wing cutter head, and a reinforcing beam is connected between the two long cutter beams.

3. The excavation device of the semi-horse shield tunneling machine according to claim 2, wherein the reinforcing beam comprises two arc-shaped beams arranged at intervals and a connecting beam connected between the two arc-shaped beams, and two ends of each arc-shaped beam are fixedly connected with the two long cutter beams respectively.

4. The excavating device of the semi-horse shield tunneling machine according to claim 2 or 3, wherein each of the left wing cutter head and the right wing cutter head comprises six cutter beams uniformly circumferentially arranged, wherein the remaining four cutter beams except the two long cutter beams are short cutter beams, and the lengths of the short cutter beams are equal.

5. The excavating device of the semi-horse shield tunneling machine according to any one of claims 1 to 3, wherein the left wing cutter head and the right wing cutter head are located in the same plane, and the left wing cutter head and the right wing cutter head are located behind the middle cutter head.

6. The excavating device of the semi-horse shield tunneling machine according to any one of claims 1 to 3, wherein a beam is fixed in the middle of the cross section of the shield body in the shield body, the excavating device of the semi-horse shield tunneling machine further comprises an excavator which is installed on the beam and located above the cross section of the shield body, the excavator is used for excavating the upper half part of the horseshoe-shaped section, the excavator comprises a rotating base and a mechanical arm, the rotating base is fixed on the beam, one end of the mechanical arm is installed on the rotating base, and the other end of the mechanical arm is connected with an excavating head.

7. The excavating device for the semi-horse shield tunneling machine according to any one of claims 1 to 3, wherein only one middle cutterhead is positioned in the middle of the lower part of the cross section of the shield body.

8. A horseshoe-shaped section shield tunneling machine, comprising an excavating device, wherein the excavating device is the same as the excavating device of the semi-horse shield tunneling machine according to any one of claims 1 to 7.

9. The horseshoe-shaped shield tunneling machine according to claim 8, further comprising a slag tapping device, wherein the slag tapping device comprises a conveyor arranged on the back of the cutterhead and a manipulator for raking the slag onto the conveyor.

10. The horseshoe-shaped cross-section shield tunneling machine of claim 9, wherein the front end of the conveyor is gradually inclined downward from back to front and butts against the bottom of the shield body.