CN212250038U - A structure that collapses is prevented to scalable tray for tunnel boring machine - Google Patents
A structure that collapses is prevented to scalable tray for tunnel boring machine Download PDFInfo
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- CN212250038U CN212250038U CN202020646934.3U CN202020646934U CN212250038U CN 212250038 U CN212250038 U CN 212250038U CN 202020646934 U CN202020646934 U CN 202020646934U CN 212250038 U CN212250038 U CN 212250038U
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- tunnel boring
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Abstract
The utility model discloses a collapsible tray collapse prevention structure for a tunnel boring machine, which belongs to the field of civil engineering and comprises a movable track, a support trolley, a collapsible support arm, a shield and a drilling machine, wherein the movable track is fixed on the main body structure of the tunnel boring machine, and the support trolley is connected with the movable track in a sliding manner; one end of the telescopic supporting arm is connected to the front end of the supporting trolley, and the other end of the telescopic supporting arm is connected with the shield and the drilling machine. The utility model discloses can solve artifical and mechanical cross operation and lead to increasing the complexity of construction arrangement to and the problem that artifical construction security is low.
Description
Technical Field
The utility model belongs to the civil engineering field, it is specific, relate to a scalable tray anti-collapse structure for tunnel boring machine.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The tunnel boring machine is developed by adopting the advantages of cold excavation without blasting, wide adaptation stratum and the like.
The inventor finds that various types of heading machines are various at present, however, the functional emphasis of the heading machine is often put on the applicability to the surrounding rock environment, the importance of the automation of the supporting structure is neglected, and the tunnel face supporting work is mainly carried out manually. The working procedure inevitably generates manual work and mechanical cross operation, the manual work and the mechanical cross operation interfere with each other, the complexity of construction arrangement is increased, and the time of tunnel supporting is relatively delayed. From a plurality of tunnel engineering cases, accidents such as rock falling at the arch top of the tunnel face, local collapse at the arch top, small-range collapse at the side wall and the like are frequently happened in the excavation process of the heading machine.
Disclosure of Invention
Not enough to prior art exists, the utility model aims at providing a scalable tray structure of preventing collapsing for tunnel boring machine, the device can solve artifical and mechanical cross operation and lead to increasing the complexity of construction arrangement to and the problem that artifical construction security is low.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
in a first aspect, an embodiment of the utility model provides a collapsible tray collapse prevention structure for a tunnel boring machine, which comprises a movable track, a support trolley, a collapsible support arm, a shield and a drilling machine, wherein the movable track is fixed on a main structure of the tunnel boring machine, and the support trolley is connected with the movable track in a sliding manner; one end of the telescopic supporting arm is connected to the front end of the supporting trolley, and the other end of the telescopic supporting arm is connected with the shield and the drilling machine.
As a further technical scheme, a hydraulic jack is arranged at the bottom of the moving track.
As a further technical scheme, guide rails are further arranged on two sides of the supporting trolley and connected with a hydraulic pushing mechanism, and the hydraulic pushing mechanism is connected with the telescopic supporting arms.
As a further technical scheme, the telescopic supporting arm comprises a front arm and a rear arm which are hinged to each other, a first telescopic mechanism is connected between the front arm and the rear arm, and the first telescopic mechanism can drive the front arm and the rear arm to rotate around the hinged point of the front arm and the rear arm.
As a further technical scheme, the front arm comprises a first front arm and a second front arm, and a second telescopic mechanism is connected between the first front arm and the second front arm; the second telescopic mechanism can drive the first front arm to approach or be far away from the second front arm.
As a further technical scheme, the drilling machine is fixedly connected to the front end of the front arm through a third telescopic mechanism.
As a further technical scheme, the shield comprises a middle shield and wing plates hinged at two sides of the middle shield; the middle shield and the wing plate are connected through a pin shaft, the side face where the middle shield and the wing plate are connected is a vertical face, and when the vertical face of the middle shield is abutted against the vertical face of the wing plate, the positions of the middle shield and the wing plate are fixed.
Above-mentioned the utility model discloses an embodiment's beneficial effect as follows:
1) in the utility model, the movable track is fixed on the main structure of the tunnel boring machine, and the supporting trolley is connected with the movable track in a sliding way; the flexible support arm one end is connected at the platform truck front end of strutting, and shield and rig are connected to the other end, can provide automatic motion basis.
2) The utility model discloses in, adopt first, second, third telescopic machanism, its homoenergetic automatic operation avoids manual operation to the production manual work and the mechanical cross operation mutual interference of avoiding reduces the complexity of construction arrangement, makes the opportunity relatively synchronous and the construction progress of tunnel supporting.
3) The utility model discloses in, hydraulic pressure pushing mechanism promotes flexible support arm along orbital motion, and it can be in the in-process nimble motion of strutting, is favorable to accelerating the engineering progress.
4) The utility model discloses in, the rockfall prevention shield includes well shield and pterygoid lamina, and it is with round pin hub connection between the two. During working, whether the wing plate is turned out or not can be adjusted according to the actual surrounding rock conditions, the supporting range is flexibly determined, and the device is protected.
5) The utility model discloses in, strut the platform truck and be independent of tunnel boring machine relatively, the work of strutting and the work of tunnelling of the different positions of face can go on simultaneously for the engineering progress.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is an overall side view of the present invention according to one or more embodiments.
Figure 2 is an overall top view of the present invention according to one or more embodiments,
fig. 3 is a cross-sectional structural schematic of the present invention according to one or more embodiments.
In the figure: 1. a tunnel boring machine; 2. a moving track; 3. connecting the rails longitudinally; 4. a track transverse connecting beam; 5. a jack; 6. a track tray; 7. supporting the trolley; 8. a guide rail; 9. a hydraulic propulsion mechanism; 10. a rear arm; 11. a forearm; 12. a first cylinder; 13. a shield; 14. middle shield; 15. a wing plate; 16. a drilling machine; 17. and a third telescopic oil cylinder.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate that the device or element referred to has the specific orientation, structure and operation, and thus should not be construed as limiting the invention, and do not necessarily represent a limitation on the structure, but rather merely serve to facilitate description of the invention and to simplify the description.
The terms "mounted", "connected" and "fixed" in the present invention should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Just as the background art introduces, to the not enough that prior art exists, the utility model aims at providing a scalable tray structure of preventing collapsing for tunnel boring machine, the device can solve artifical and mechanical cross operation and lead to increasing the complexity of construction arrangement to and the problem that artifical construction security is low.
Example 1
In a typical embodiment of the present invention, as shown in fig. 1, a collapsible tray collapse prevention structure for a tunnel boring machine 1 includes a moving track 2, a supporting trolley 7, a collapsible support arm, a shield 13 and a drilling machine 16, wherein the moving track 2 is fixed on a main structure of the tunnel boring machine 1, and the supporting trolley 7 is slidably connected to the moving track 2; one end of the telescopic supporting arm is connected to the front end of the supporting trolley 7, and the other end of the telescopic supporting arm is connected with the shield 13 and the drilling machine 16.
The movable track 2 is of an arch structure or a semicircular structure, and the outline size of the movable track can be determined according to the clearance size of a tunnel excavation chamber. The moving tracks 2 in the embodiment are concentrically arranged by adopting a plurality of steel tracks, and the moving tracks 2 are fixedly connected through the track longitudinal connecting beam 3, so that the integral stability of the moving tracks is ensured.
More specifically, the plurality of tracks are all arched or semicircular, and are concentrically arranged from inside to outside.
The moving track 2 is provided with hydraulic jacks 5 at the foot arch to transfer the face load of the support device to the ground during operation.
The left side and the right side of the supporting trolley 7 are provided with guide rails 8 and hydraulic propulsion mechanisms 9, the supporting trolley 7 is fixed on the moving track 2 through walking rollers and can move horizontally on the moving track 2, and the telescopic supporting arms are connected with the guide rails 8 through the hydraulic propulsion mechanisms 9 and further connected with the supporting trolley 7. In this embodiment, the guide rails 8 include two, the hydraulic pushing mechanism includes a hydraulic power source and a roller, the hydraulic power source is connected with and drives the roller, and the roller is in contact with the two guide rails 8.
The telescopic supporting arm comprises a rear arm 10 and a front arm 11 which are hinged with each other, the rear arm 10 is fixed on guide rails 8 at the left side and the right side of the supporting trolley 7 and can be controlled to move back and forth by a hydraulic propulsion device on the supporting trolley 7, the front arm 11 is connected with the rear arm 10 through a pin shaft, an oil cylinder is arranged at the joint of the front arm 11 and the rear arm 10 and serves as a first telescopic mechanism 12, and the first telescopic mechanism 12 can adjust the angle between the front arm 11 and the rear arm 10; it will be appreciated that the fixed end of the cylinder is connected to the front arm 11 and the telescopic end of the cylinder is connected to the rear arm 10.
The forearm 11 is extending structure, and the forearm 11 includes first forearm 11 and second forearm 11, is connected with short stroke telescopic cylinder between first forearm 11 and the second forearm 11 and is regarded as the second telescopic machanism, and the second telescopic machanism can drive first forearm 11 and be close to or keep away from second forearm 11, can conveniently adjust and strut height and scope. It will be appreciated that the fixed end of the short stroke telescopic cylinder is connected to the end of the first forearm 11 and the telescopic end of the short stroke telescopic cylinder is connected to the end of the second forearm 11.
The shield 13 comprises a middle shield 14 and wing plates 15 hinged to two sides of the middle shield 14, the middle shield 14 and the wing plates 15 are connected through pin shafts, whether the wing plates 15 are turned out or not can be adjusted according to actual surrounding rock conditions during working, and the supporting range can be flexibly determined. It will be appreciated that the central shield 14 and the wing 15 are both of a frame or web construction. The middle shield 14 is connected with the wing plate 15 through a pin shaft, the connecting side surfaces of the middle shield 14 and the wing plate 15 are vertical surfaces, and when the vertical surface of the middle shield 14 is abutted against the vertical surface of the wing plate 15, the positions of the middle shield 14 and the wing plate 15 are fixed.
The forepoling drilling machine 16 is fixedly connected to the front end of the front arm 11 of the telescopic supporting arm through a telescopic oil cylinder as a third telescopic mechanism 17 and can be retracted and expanded; the drill 16 can be used for drilling holes with different diameters according to engineering design schemes by adopting replaceable drill bits. It will be appreciated that the advance support drill 16 described in this embodiment uses an existing support drill 16, which is used for advance support. The advance support drill 16 here comprises only the execution of the drill 16.
This embodiment only requires the track pallet 6 to be mounted on the tunnel boring machine 1 so that the moving track 2 can be fixed to the machine.
Example 2
the movable rail 2 is manufactured according to the clearance size of the excavated cavern, and the whole assembly of the rails is completed through rail longitudinal connection 3 and rail transverse connection 4 in a construction site. A track tray 6 is attached to the heading machine 1, and the movable track 2 is fixed to the track tray 6. The supporting trolley 7 and other related components of the patent are assembled and connected with the moving track 2 through the traveling rollers.
When the excavator works, the excavator 1 reaches a designated position to perform excavation operation. The arch jack 5 extends out to make the movable rail 2 fall to the bottom, and the pressure value of each jack is monitored to make each truss rail balanced and stressed. Along with excavation work advances, when the face stability appears and is difficult to guarantee, when there is the risk of collapsing. A worker operates the supporting trolley 7 to walk to a corresponding position along the moving track 2, and controls the hydraulic propulsion device 9 to push the rear arm 10 of the telescopic supporting arm forwards along the trolley guide rail 8; subsequently, the support arm-extending cylinder 12 is controlled to extend the telescopic support arm forearm 11. The shield 13 reaches the position to be temporarily supported by adjusting the angle and the length of the telescopic supporting arm.
During the working period of the temporary supporting structure, the tunneling machine 1 below can continuously adjust the direction of the drill bit to perform excavation work of other parts. Meanwhile, under the protection of the shield 13, the working personnel carry out the emergency measures of the tunnel face, thereby eliminating the potential safety hazard.
For the condition that the temporary supporting range required by the surrounding rock is large, the wing plates 15 of the shield 13 can be turned outwards to increase the supporting range.
For the condition of extremely poor tunnel face stability, the shield 13 is adopted for temporary support, and simultaneously, the telescopic oil cylinder 17 of the advance support drilling machine is controlled to extend outwards, so that the advance support drilling machine 16 reaches a specified position for drilling, and after hole forming, an advance anchor rod or an advance grouting small conduit is manually completed. By controlling the stroke of the telescopic oil cylinder 17 of the forepoling drill, the drilling work can be completed according to the design requirement under the condition that the heading machine 1, the supporting trolley 7 and the telescopic supporting arm are not moved.
After one excavation cycle is completed, the following operations are carried out in sequence: the forepoling drilling machine 16 is retracted, the front arm 11 of the telescopic supporting arm retracts, the supporting arm unfolding oil cylinder 12 retracts to enable the front arm 11 of the telescopic supporting arm to be folded backwards, the rear arm 10 of the telescopic supporting arm retracts backwards, finally the arch foot jack 5 is retracted, and the heading machine 1 can move to enter the next excavation cycle.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A telescopic tray collapse prevention structure for a tunnel boring machine is characterized by comprising a moving track, a supporting trolley, a telescopic supporting arm, a shield and a drilling machine, wherein the moving track is fixed on a main body structure of the tunnel boring machine, and the supporting trolley is connected to the moving track in a sliding manner; one end of the telescopic supporting arm is connected to the front end of the supporting trolley, and the other end of the telescopic supporting arm is connected with the shield and the drilling machine.
2. A retractable tray collapse prevention structure for a tunnel boring machine according to claim 1, wherein the moving track is of an arch or semi-circular configuration.
3. The retractable tray collapse prevention structure for the tunnel boring machine according to claim 2, wherein the moving rails comprise a plurality of steel rails, and the plurality of moving rails are fixedly connected with each other; the plurality of tracks are all arched or semicircular, and are concentrically arranged from inside to outside.
4. The retractable tray collapse preventing structure for a tunnel boring machine according to claim 1, wherein a hydraulic jack is provided at the bottom of the moving rail.
5. The retractable tray collapse preventing structure for a tunnel boring machine according to claim 1, wherein guide rails are further provided on both sides of the supporting trolley, and a hydraulic pushing mechanism is connected to the guide rails and the hydraulic pushing mechanism is connected to the retractable support arms.
6. The retractable tray collapse preventing structure for a tunnel boring machine according to claim 5, wherein the guide rails comprise two, and the hydraulic pushing mechanism comprises a hydraulic power source and rollers, the hydraulic power source is connected to and drives the rollers, and the rollers are in contact with the two guide rails.
7. A retractable tray collapse prevention structure for a tunnel boring machine according to claim 1, wherein the retractable support arm comprises a front arm and a rear arm which are hinged to each other, and a first retractable mechanism is connected between the front arm and the rear arm and is capable of driving the front arm and the rear arm to rotate around the hinged point of the front arm and the rear arm.
8. A retractable tray collapse prevention structure for a tunnel boring machine according to claim 7, wherein the front arms comprise a first front arm and a second front arm, a second retraction mechanism being connected between the first front arm and the second front arm; the second telescopic mechanism can drive the first front arm to approach or be far away from the second front arm.
9. A retractable tray collapse prevention structure for a tunnel boring machine according to claim 7, wherein the boring machine is fixedly attached to the front end of the front arm by a third retractable mechanism.
10. A retractable tray collapse preventing structure for a tunnel boring machine according to claim 1, wherein the shield comprises a middle shield and wings hinged to both sides of the middle shield; the middle shield and the wing plate are connected through a pin shaft, the side face where the middle shield and the wing plate are connected is a vertical face, and when the vertical face of the middle shield is abutted against the vertical face of the wing plate, the positions of the middle shield and the wing plate are fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020646934.3U CN212250038U (en) | 2020-04-24 | 2020-04-24 | A structure that collapses is prevented to scalable tray for tunnel boring machine |
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| CN202020646934.3U CN212250038U (en) | 2020-04-24 | 2020-04-24 | A structure that collapses is prevented to scalable tray for tunnel boring machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894576A (en) * | 2020-09-18 | 2020-11-06 | 张红梅 | Rock drilling device and method for preventing collapse of inner surface of mine tunnel |
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2020
- 2020-04-24 CN CN202020646934.3U patent/CN212250038U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894576A (en) * | 2020-09-18 | 2020-11-06 | 张红梅 | Rock drilling device and method for preventing collapse of inner surface of mine tunnel |
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