CN211648164U - Shield machine - Google Patents
Shield machine Download PDFInfo
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- CN211648164U CN211648164U CN202020280283.0U CN202020280283U CN211648164U CN 211648164 U CN211648164 U CN 211648164U CN 202020280283 U CN202020280283 U CN 202020280283U CN 211648164 U CN211648164 U CN 211648164U
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Abstract
The utility model discloses a shield constructs machine, including anterior shield, well shield, shield tail and initiative articulated hydro-cylinder, initiative articulated hydro-cylinder is including articulating in a plurality of preceding initiative articulated hydro-cylinders between anterior shield, well shield and articulating in a plurality of back initiative articulated hydro-cylinders between well shield, shield tail, and each initiative articulated hydro-cylinder is connected respectively in hydraulic system control system, and hydraulic system control system is used for controlling the flexible of each initiative articulated hydro-cylinder. When the shield machine turns, the hydraulic control system correspondingly controls the extension lengths of the piston rods in the active articulated oil cylinders according to the turning angle, so that the relative angle between the front shield and the middle shield and the relative angle between the middle shield and the shield tail can be actively adjusted respectively, the turning sensitivity is high, and the ultra-small-angle turning can be realized.
Description
Technical Field
The utility model relates to a tunnel excavation construction equipment technical field, in particular to shield constructs machine.
Background
At present, the shield machine is widely applied to construction of subways, large-diameter tunnels, underground pipelines and the like by virtue of excellent ground settlement control, high excavation efficiency and wide stratum adaptability. Wherein, the hinge joint device is one of the indispensable parts of shield structure machine increase sensitivity.
In a shield machine, a single hinge device is provided to enable flexible turning, but the turning radius that can be achieved is limited.
Therefore, how to provide a shield machine capable of achieving a smaller turning radius is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a shield constructs machine can reach littleer turning radius.
In order to achieve the above object, the utility model provides a following technical scheme:
a shield machine comprises a front shield, a middle shield, a shield tail and active hinge oil cylinders, wherein the active hinge oil cylinders comprise a plurality of front active hinge oil cylinders hinged between the front shield and the middle shield and a plurality of rear active hinge oil cylinders hinged between the middle shield and the shield tail, each active hinge oil cylinder is respectively connected to a hydraulic system control system, and the hydraulic system control system is used for controlling the extension and retraction of each active hinge oil cylinder.
Preferably, still include thrust cylinder, thrust cylinder's cylinder body is fixed in on the shield tail just thrust cylinder's cylinder body with well shield phase separation sets up, thrust cylinder's piston rod is followed thrust cylinder's cylinder body rear side stretches out.
Preferably, the tail end of the cylinder body of the propulsion oil cylinder is fixed to the shield tail, and the front end of the cylinder body of the propulsion oil cylinder extends into the middle shield.
Preferably, a hinged sealing device is respectively arranged between the anterior shield and the middle shield and between the middle shield and the shield tail.
Preferably, the front active hinge oil cylinders are sequentially arranged between the front shield and the middle shield along a first set circle.
Preferably, the rear active articulated cylinders are sequentially arranged between the middle shield and the shield tail along a second set circle.
Preferably, the propulsion oil cylinder is arranged on the outer ring of the second set circle.
The utility model provides a shield constructs machine, including anterior shield, well shield, shield tail and initiative articulated hydro-cylinder, initiative articulated hydro-cylinder is including articulating in a plurality of preceding initiative articulated hydro-cylinders between anterior shield, well shield and articulating in a plurality of back initiative articulated hydro-cylinders between well shield, the shield tail, and each initiative articulated hydro-cylinder is connected respectively in hydraulic system control system, and hydraulic system control system is used for controlling the flexible of each initiative articulated hydro-cylinder.
When the shield machine turns, the hydraulic control system correspondingly controls the extension lengths of the piston rods in the active articulated oil cylinders according to the turning angle, so that the relative angle between the front shield and the middle shield and the relative angle between the middle shield and the shield tail can be actively adjusted respectively, the turning sensitivity is high, and the ultra-small-angle turning can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a simulation diagram of a super-small turn of the shield tunneling machine provided by the present invention;
fig. 2 is a schematic diagram of a host configuration of a shield tunneling machine provided by the present invention;
fig. 3 is a diagram of a double active hinge device of a shield tunneling machine according to the present invention;
fig. 4 is the schematic diagram of the arrangement mode of the thrust cylinders of the shield tunneling machine.
Reference numerals:
1-cutterhead, 2-soil bin, 3-front shield, 4-front active hinged oil cylinder, 5-middle shield, 6-rear active hinged oil cylinder, 7-propulsion oil cylinder, 8-shield tail, 9-bolt and 10-segment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a shield constructs machine can reach littleer turning radius.
It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In a specific embodiment of the shield tunneling machine provided by the present invention, please refer to fig. 1 to 4, which includes a cutter head 1, a soil bin 2, a front shield 3, a middle shield 5, a shield tail 8 and a driving hinge cylinder. The active articulated oil cylinder comprises a plurality of front active articulated oil cylinders 4 articulated between a front shield 3 and a middle shield 5 and a plurality of rear active articulated oil cylinders 6 articulated between a middle shield 5 and a shield tail 8, and each active articulated oil cylinder is respectively connected with a hydraulic system control system which is used for controlling the extension and retraction of each active articulated oil cylinder.
Specifically, as shown in fig. 3, a front hinge seat is fixed to the front shield 3 and the middle shield 5 respectively, and two ends of the front active hinge cylinder 4 are hinged to the front hinge seat on the front shield 3 and the front hinge seat on the middle shield 5 respectively through a front hinge shaft; the middle shield 5 and the shield tail 8 are respectively fixed with a rear hinged seat, and two ends of the rear active hinged oil cylinder 6 are respectively hinged with the rear hinged seat on the middle shield 5 and the rear hinged seat on the shield tail 8 through rear hinged shafts.
In the shield machine in this embodiment, when the shield machine turns, the hydraulic control system correspondingly controls the extension lengths of the piston rods in the active articulated cylinders according to the turning angle, so that the relative angle between the anterior shield 3 and the middle shield 5 and the relative angle between the middle shield 5 and the shield tail 8 can be actively adjusted respectively, the turning sensitivity is high, and the turning at an ultra-small angle can be realized.
Further, the shield tunneling machine also comprises a propulsion oil cylinder 7. The cylinder body of the propulsion cylinder 7 is fixed on the shield tail 8, the cylinder body of the propulsion cylinder 7 is separated from the middle shield 5, and the piston rod of the propulsion cylinder 7 extends out of the rear side of the cylinder body of the propulsion cylinder 7. More specifically, the cylinder body of the propulsion oil cylinder 7 is fixed on the shield tail partition plate in a bolting mode through a bolt 9. Because the propulsion oil cylinder 7 is only directly connected with the shield tail 8, the propulsion oil cylinder 7 cannot interfere the rotation angle adjustment between the shield tail 8 and the middle shield 5, and the flexibility of the rotation angle adjustment between the shield tail 8 and the middle shield 5 is ensured. During propulsion, the thrust of the thrust oil cylinder 7 acts on the shield tail 8 of the shield machine, is transmitted to the middle shield 5 of the shield machine through the rear active articulated oil cylinder between the middle shield 5 and the shield tail 8, is transmitted to the front shield 3 of the shield machine through the front active articulated oil cylinder between the middle shield 5 and the front shield 3, and is used for adjusting the bending angle between the front shield 3 of the shield machine and the middle shield 5 and between the middle shield 5 and the shield tail 8 by depending on the active extension and retraction of each active articulated oil cylinder, so that the ultra-small horizontal curvature radius (such as 50m) turning of the shield machine is realized, the shield machine achieves higher sensitivity and smaller turning radius, and the tunnel excavation with the ultra-small turning radius becomes possible.
Furthermore, the tail end of the propulsion cylinder 7 is fixed on the shield tail 8 and the front end of the propulsion cylinder 7 extends into the middle shield 5, namely the tail end of the propulsion cylinder 7 is fixed on the shield tail 8, while the front end of the propulsion cylinder 7 is not fixed and can move freely, so that the middle shield 5 can provide partial space to accommodate the propulsion cylinder 7.
Furthermore, hinged sealing devices are respectively arranged between the front shield 3 and the middle shield 5 and between the middle shield 5 and the shield tail 8, so that the shield machine is guaranteed to have better sealing performance in the operation process.
Furthermore, the front active articulated oil cylinders 4 are sequentially arranged between the front shield 3 and the middle shield 5 along a first set circle, and the rear active articulated oil cylinders 6 are sequentially arranged between the middle shield 5 and the shield tail 8 along a second set circle, so that the flexibility of adjusting the rotation angle among the front shield 3, the middle shield 5 and the shield tail 8 can be further improved. The center lines of the first and second set circles are preferably the center lines of the center shield 5 extending in the moving direction (front-back direction).
Furthermore, the propulsion oil cylinder 7 is arranged on the outer ring of the second set circle, so that the rear active articulated oil cylinder 6 and the propulsion oil cylinder 7 are regularly arranged, and the propulsion oil cylinder 7 can conveniently carry out propulsion work.
The working principle of the shield tunneling machine provided by the embodiment is as follows:
when the shield machine is in a propulsion mode, the tail end of the propulsion oil cylinder 7 props against the pipe piece 10, the reverse thrust is transmitted to the shield tail 8, the reverse thrust is transmitted to the middle shield 5 through the rear active articulated oil cylinder between the middle shield 5 and the shield tail 8, and then the reverse thrust is transmitted to the front shield 3 through the front active articulated oil cylinder between the front shield 3 and the middle shield 5, so that the normal propulsion of the shield machine is ensured, and the shield machine can realize ultra-small radius turning.
When the shield machine turns, for example, when the shield machine enters a transition section construction from a straight section construction and then enters a curve section construction from the transition section construction, the angles of the front active hinge oil cylinder 4 and the rear active hinge oil cylinder 6 are calculated in advance according to the size of a turning radius, the front active hinge oil cylinder 4 and the rear active hinge oil cylinder 6 are independently operated in two sections, and PLC automatic control is adopted. In addition, the gap between the assembled duct piece 10 and the shield tail 8 is controlled, and in order to ensure the tunneling posture of the shield tunneling machine, the duct piece 10 cannot be assembled if the gap between the duct piece 10 and the shield tail 8 is too small; the clearance is big more, piece together section of jurisdiction 10 better, then the quality that section of jurisdiction 10 pieced together is just better, the quality is pieced together better, the parameter of each aspect of shaping tunnel is just better relatively, easily protects section of jurisdiction 10 simultaneously, prevents it cracked, guarantees that inside and outside both sides excavation curve is unanimous with theoretical construction curve to whether calculate blade disc 1 need surpass dig or the required excessive volume of digging of surpassing digging size. On the premise of a certain small turning radius, compared with single-active hinge, the shield machine adopts double-active (between a front shield 3 and a middle shield 5 and between a middle shield 5 and a shield tail 8) hinge devices, the required overexcavation amount of the cutter head 1 is small, the possibility of tunnel excavation collapse is reduced, the risk is reduced, the angle of an active hinge oil cylinder is small, the stroke control of the active hinge oil cylinder is simple, the center deviation of the active hinge oil cylinder is not easy to cause, the moving stroke of the active hinge oil cylinder is short, the hinge sealing abrasion probability is low, and the stroke of the active hinge oil cylinder and the angle control of the front body and the rear body of the shield machine are accurate.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a shield constructs machine and has introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. The shield machine comprises a front shield (3), a middle shield (5) and a shield tail (8), and is characterized by further comprising active hinged oil cylinders, wherein the active hinged oil cylinders comprise a plurality of front active hinged oil cylinders (4) hinged between the front shield (3) and the middle shield (5) and a plurality of rear active hinged oil cylinders (6) hinged between the middle shield (5) and the shield tail (8), each active hinged oil cylinder is connected to a hydraulic system control system respectively, and the hydraulic system control system is used for controlling the extension and retraction of each active hinged oil cylinder.
2. The shield tunneling machine according to claim 1, characterized by further comprising a thrust cylinder (7), wherein the body of the thrust cylinder (7) is fixed on the shield tail (8) and the body of the thrust cylinder (7) is arranged separately from the middle shield (5), and the piston rod of the thrust cylinder (7) extends out of the rear side of the body of the thrust cylinder (7).
3. The shield tunneling machine according to claim 2, characterized in that the end of the thrust cylinder (7) is fixed to the shield tail (8) and the front end extends into the middle shield (5).
4. A shield tunneling machine according to claim 2 or 3, characterized in that hinged sealing means are respectively provided between the anterior shield (3) and the middle shield (5) and between the middle shield (5) and the shield tail (8).
5. The shield tunneling machine according to claim 4, characterized in that each of the front active articulated cylinders (4) is arranged in sequence along a first set circle between the front shield (3) and the middle shield (5).
6. The shield tunneling machine according to claim 4, characterized in that each rear active articulated cylinder (6) is arranged in sequence along a second set circle between the middle shield (5) and the shield tail (8).
7. The shield tunneling machine according to claim 6, characterized in that the thrust cylinder (7) is arranged at the outer ring of the second set circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280283.0U CN211648164U (en) | 2020-03-09 | 2020-03-09 | Shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020280283.0U CN211648164U (en) | 2020-03-09 | 2020-03-09 | Shield machine |
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| CN211648164U true CN211648164U (en) | 2020-10-09 |
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| CN202020280283.0U Active CN211648164U (en) | 2020-03-09 | 2020-03-09 | Shield machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188623A (en) * | 2020-03-09 | 2020-05-22 | 中国铁建重工集团股份有限公司 | Shield machine |
| CN113374486A (en) * | 2021-07-19 | 2021-09-10 | 中铁工程装备集团有限公司 | Hard rock tunnel boring machine |
-
2020
- 2020-03-09 CN CN202020280283.0U patent/CN211648164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188623A (en) * | 2020-03-09 | 2020-05-22 | 中国铁建重工集团股份有限公司 | Shield machine |
| CN113374486A (en) * | 2021-07-19 | 2021-09-10 | 中铁工程装备集团有限公司 | Hard rock tunnel boring machine |
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