CN116066118B - Main beam device for TBM tunneling machine - Google Patents
Main beam device for TBM tunneling machine Download PDFInfo
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- CN116066118B CN116066118B CN202310296001.4A CN202310296001A CN116066118B CN 116066118 B CN116066118 B CN 116066118B CN 202310296001 A CN202310296001 A CN 202310296001A CN 116066118 B CN116066118 B CN 116066118B
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- main beam
- flow guiding
- guiding structure
- slag
- conveyor belt
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- 230000005641 tunneling Effects 0.000 title abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 147
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention relates to a main beam device for a TBM tunneling machine, which comprises: the main beam body is provided with a through channel along the axial direction, the two opposite side walls of the channel are respectively provided with the flow guide structure, and the main beam body is provided with a first slag collecting hole communicated with the channel; the flow guiding structure comprises a first flow guiding structure connected with the inner wall, and a second flow guiding structure connected with the first flow guiding structure, wherein the slope of the second flow guiding structure is larger than that of the first flow guiding structure; the conveyor belt is arranged on one side of the second diversion structure far away from the first diversion structure, and the conveyor belt is arranged close to the second diversion structure. According to the scheme of the invention, the flow guiding structure can bear the impact force of the gangue slag on the conveyor belt, and meanwhile, the flow guiding structure can limit the gangue slag on the side of the conveyor belt, so that the gangue slag can not extrude out of the conveying range of the conveyor belt.
Description
Technical Field
The invention relates to the technical field of coal roadway TBM heading machines, in particular to a main beam device for a TBM heading machine.
Background
A large amount of gangue slag can be generated during tunneling of the TBM tunneling machine, wherein a large amount of gangue slag can fall off when the finger-shaped shield is retracted through the tunnel top wall position of the finger-shaped shield, and the gangue slag falling off from the finger-shaped shield in the part is guided onto a conveyor belt by a guide structure to be directly conveyed out in the prior art, but the service life of the conveyor belt is reduced due to the fact that the conveyor belt is impacted by the gangue slag continuously in the guide process; moreover, in the prior art, a conveyor belt is arranged in the main beam, then the main beam is opened, and the gangue slag is delivered to the conveyor belt in the main beam from the opening of the main beam through a flow guide structure, so that the problem that the gangue slag directly impacts the conveyor belt also exists in the scheme, and the gangue slag entering the main beam can fall to the lower part of the main beam from a gap between the conveyor belt and the inner wall of the main beam, so that a large amount of gangue slag is gathered below the main beam, and the cleaning is inconvenient; moreover, the coal gangue slag entering the inside of the main beam can also block gaps between the conveying belt and the inner wall of the main beam, so that the conveying belt can not be smoothly conveyed, and the conveying structure is damaged.
Disclosure of Invention
The invention aims to solve at least one technical problem in the background art and provides a main beam device for a TBM tunneling machine.
In order to achieve the above object, the present invention provides a main beam device for a TBM heading machine, including: the main beam body is provided with a through channel along the axial direction, the two opposite side walls of the channel are respectively provided with the flow guide structure, and the main beam body is provided with a first slag collecting hole communicated with the channel;
the flow guiding structure comprises a first flow guiding structure connected with the inner wall, and a second flow guiding structure connected with the first flow guiding structure, wherein the slope of the second flow guiding structure is larger than that of the first flow guiding structure;
the conveyor belt is arranged on one side of the second diversion structure far away from the first diversion structure, and the conveyor belt is arranged close to the second diversion structure.
According to one aspect of the invention, the connection part of the first flow guiding structure and the inner wall of the channel is positioned at the outer side of the first slag collecting hole, and the connection part of the first flow guiding structure and the second flow guiding structure has two intersection points with the first slag collecting hole.
According to one aspect of the invention, the distance between the ends of the two first diversion structures far away from the inner wall is less than 0.5 times of the roadway radius.
According to one aspect of the invention, an included angle alpha between one end of the first flow guiding structure far away from the inner wall and a horizontal plane is more than or equal to 30 degrees and less than or equal to 45 degrees, and an included angle beta between one end of the second flow guiding structure far away from the inner wall and the horizontal plane is in a range of: beta is more than or equal to 60 degrees and less than or equal to 90 degrees.
According to one aspect of the invention, the width of the conveyor belt is greater than the width between two of the second flow directing structures.
According to one aspect of the invention, the main beam body comprises a first main beam body and a second main beam body, and slag outlets are arranged on the bottom surfaces of the first main beam body and the second main beam body.
According to one aspect of the invention, the top surface of the first main beam body comprises a first plane and a second inclined plane, the lower end of the second inclined plane is connected with the second main beam body, and the higher end of the second inclined plane is connected with one end of the first plane;
the first slag collecting hole is arranged on the first plane, and the first slag collecting hole is arranged near the end part of the second inclined plane;
and a second slag collecting hole is formed in the second inclined plane.
According to one aspect of the invention, the second slag collecting hole is arranged in the middle of the second inclined plane.
According to one aspect of the invention, the second inclined plane is provided with a diversion trench which connects the first plane and the second slag collecting hole.
According to one aspect of the invention, a plurality of first through holes are arranged on the side wall of the second main beam body at intervals, and the first through holes are arranged close to the flow guiding structure.
According to one aspect of the present invention, a main beam device for a TBM heading machine includes: the main beam body is provided with a through channel along the axial direction, two opposite inner walls of the channel are respectively provided with a flow guide structure, and the main beam body is provided with a first slag collecting hole communicated with the channel. The flow guiding structure comprises a first flow guiding structure connected with the inner wall of the channel, and a second flow guiding structure connected with the first flow guiding structure, wherein the slope of the second flow guiding structure is larger than that of the first flow guiding structure. The first flow guiding structure and the second flow guiding structure are two flow guiding plates with different slopes. The conveyer belt sets up the one end tip that keeps away from the passageway inner wall at second water conservancy diversion structure. So set up, set up the water conservancy diversion structure that is located the belt top in the passageway of girder body can share the pressure of the whole direct striking conveyer belt of gangue broken bits effectively, can effectively improve the life of conveyer belt. Further, the guide structure is arranged above the conveyor belt, and meanwhile, the end part of the guide structure is arranged on the inner wall of the channel, so that the gap between the conveyor belt and the inner wall of the channel is sealed from the upper part through the guide structure, and coal gangue slag falling from the upper part is prevented from falling to the lower part from the gap or is blocked in the gap to damage the conveyor structure. Moreover, the slope of the second guide structure in the guide structure is greater than the slope of the first guide structure, and the second guide structure is closer to the conveyor belt, so that the second guide structure can play a guide role, and meanwhile, gangue slag falling into the conveyor belt can be limited and blocked by the second guide structure from the side surface, so that the gangue falling into the conveyor belt is prevented from drilling out of the conveyor belt from the side surface. Moreover, the arrangement of the different slopes can enable the gangue slag falling into the conveying belt through the first diversion structure to fall into the middle of the conveying belt in a concentrated manner, and the triangular area between the extension line of the first diversion structure and the second diversion structure can not accumulate excessive gangue slag, so that the gangue slag can not be extruded through the second diversion structure, the conveying efficiency is ensured, the clean and tidy space of the lower part of the main beam is effectively protected, and meanwhile, the gap between the conveying belt and the inner wall of the channel is ensured not to accumulate the gangue slag.
According to one scheme of the invention, the connection part of the first flow guiding structure and the inner wall of the channel is positioned at the outer side of the first slag collecting hole and has two intersection points with the first slag collecting hole. So set up, can guarantee to fall from the gangue slag hole that falls can all fall into on the conveyer belt, and after part gangue slag enters into the girder body through first album slag hole moreover, can fall into on the conveyer belt through first water conservancy diversion structure for the conveyer belt is obviously reduced by the number of times of gangue slag striking, guarantees the life of conveyer belt.
According to one scheme of the invention, the distance between the end parts of the two first flow guiding structures is less than 0.5 times of the roadway radius, so that the coal gangue slag thrown in a parabolic manner can be smoothly thrown into the conveyor belt, most of the coal gangue slag can be guided onto the conveyor belt through the first flow guiding structures, the impact between the coal gangue and the conveyor belt is effectively reduced, and the service life of the conveyor structure is ensured. Of course, if the main beam body 1 is arranged at a lower position, the distance between the end portions of the two first flow guiding structures can be properly increased, so long as the coal gangue slag can be ensured to smoothly fall into the conveyor belt, and the effect can be ensured. Of course, the distance can be further reduced, namely, the roadway radius is reduced by a factor, so that most of gangue slag can be further ensured to be guided into the conveyor belt through the first guide structures during reduction, and the conveyor belt between the two first guide structures is ensured to have enough conveying capacity.
According to one scheme of the invention, an included angle alpha between one end of the first flow guiding structure far away from the inner wall and a horizontal plane is more than or equal to 30 degrees and less than or equal to 45 degrees, and an included angle beta between one end of the second flow guiding structure far away from the inner wall and the horizontal plane is in the range of: beta is more than or equal to 60 degrees and less than or equal to 90 degrees. So set up, can make first water conservancy diversion structure can cooperate above-mentioned distance to arrange and effectively accept gangue slag, guarantee simultaneously that gangue slag can fall into smoothly on the conveyer belt and not stop on first water conservancy diversion structure through first water conservancy diversion structure. Meanwhile, the second flow guiding structure can realize further flow guiding on the basis of the first flow guiding structure, and importantly, the second flow guiding structure can realize coal gangue slag on the side limiting conveyor belt, so that the coal gangue slag is prevented from staying above the end part of the conveyor belt, and meanwhile, the range that the coal gangue slag is prevented from extruding out of the conveyor belt from the end part of the conveyor belt is ensured.
According to one aspect of the invention, the width of the conveyor belt is greater than the width between the two second flow directing structures. So set up, can prevent to follow the problem that the gangue slag that extrudes between second water conservancy diversion structure and the conveyer belt can't convey the direct gap that falls into separately, guarantee to be by the continuous conveying, can prevent moreover that it from directly falling into the below of girder body.
According to one scheme of the invention, the top surface of the first main beam body comprises a first plane and a second inclined plane, the lower end of the second inclined plane is connected with the second main beam body, the higher end of the second inclined plane is connected with one end of the first plane, the first slag collecting hole is arranged on the first plane, the first slag collecting hole is arranged near the end part of the second inclined plane, and the second inclined plane is provided with a second slag collecting hole. So set up, the gangue slag that produces when throwing gangue slag to first album of slag hole through outside water conservancy diversion structure does not throw into the inside gangue slag hole of girder body can directly get into the second album of slag hole through the second inclined plane, perhaps when the girder body takes place to remove, the gangue slag of remaining on first girder body can get into in the second album of slag hole through the second inclined plane through relative movement, can guarantee like this that the girder body does not have the gangue slag that flows outward, guarantee the clean and tidy of environment, guarantee the effective clearance of gangue slag and transport.
According to one aspect of the invention, the second slag collecting hole is provided in the middle of the second inclined surface. By the arrangement, the coal gangue slag can be ensured to smoothly enter the second slag collecting hole, and the phenomenon that the longer travel of the coal gangue deviates from the second slag collecting hole and flows to a position outside the main beam body is avoided. Furthermore, a diversion trench connecting the first plane and the second slag collecting hole can be arranged on the second inclined plane. Therefore, the coal gangue slag which does not enter the main beam body through the first slag collecting hole can be ensured to smoothly enter the conveying belt in the main beam body through the second slag collecting hole.
According to one aspect of the invention, the side wall of the second main beam body is provided with a plurality of first through holes at intervals, and the first through holes are arranged close to the flow guiding structure. So set up, can monitor and overhaul the operation between guide structure and the conveyer belt in the second girder body through first through-hole, can guarantee like this that the problem that can not take place the stifled gap of gangue broken slag card appears in the second girder body, guarantee that whole operation is smooth and easy.
According to the scheme of the invention, when a great amount of gangue slag falling off from the top wall position of a roadway supported by the finger-shaped shield is conveyed into the main beam body through the guide structure, the gangue slag can smoothly fall onto the conveying belt through the guide structure and be discharged, and because of the arrangement of the first guide structure and the second guide structure in the guide structure, part of gangue slag can fall down from the upper part and then enter the conveying belt through the first guide structure, the gangue slag entering the conveying belt can be limited by the second guide structure on the side surface of the gangue slag, and the second guide structure can prevent the gangue slag from extruding through gaps between the gangue slag and the conveying belt to cause falling-off conveying and conveying damage.
Drawings
Fig. 1 schematically shows a perspective view of a main beam device for a TBM heading machine according to an embodiment of the invention.
Detailed Description
The present disclosure will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are merely to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present invention and do not imply any limitation on the scope of the invention.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment.
Fig. 1 schematically shows a perspective view of a main beam device for a TBM heading machine according to an embodiment of the invention. As shown in fig. 1, in the present embodiment, the main beam device for a TBM heading machine includes: the main beam body 1 and a conveyor belt (not shown in the figure), wherein the main beam body 1 is provided with a through channel 101 along the axial direction, two opposite side walls (such as the inner walls on the left side and the right side in fig. 1) of the channel 101 are respectively provided with a flow guiding structure 2, and the main beam body 1 is provided with a first slag collecting hole 102 communicated with the channel 101. In this embodiment, the flow guiding structure 2 includes a first flow guiding structure 201 connected to the inner wall of the channel 101, and a second flow guiding structure 202 connected to the first flow guiding structure 201, where the slope of the second flow guiding structure 202 is greater than that of the first flow guiding structure 201. As shown in fig. 1, in the present embodiment, the first flow guiding structure 201 and the second flow guiding structure 202 are two flow guiding plates with different slopes. In the present embodiment, the conveyor belt is disposed on a side of the second flow guiding structure 202 away from the first flow guiding structure 201 (i.e., the lower side in fig. 1), and the conveyor belt is disposed in close proximity to the second flow guiding structure 202. .
According to the arrangement of the invention, the guide structure 2 arranged above the belt is arranged in the channel 101 of the main beam body 1, so that the pressure of the coal gangue slag directly hitting the conveyor belt can be effectively shared, and the service life of the conveyor belt can be effectively prolonged. Further, setting the guide structure 2 above the conveyor belt, and simultaneously installing the end of the guide structure on the inner wall of the channel 101 can make the gap between the conveyor belt and the inner wall of the channel 101 be covered from above by the guide structure 2, so as to prevent the gangue slag falling from above from falling from the gap to the lower side or from being blocked in the gap to damage the conveyor structure. Furthermore, the slope of the second flow guiding structure 202 in the flow guiding structure 2 is larger than that of the first flow guiding structure 201, and the second flow guiding structure 202 is closer to the conveyor belt, so that the second flow guiding structure 202 can play a role in flow guiding, and meanwhile, gangue slag falling into the conveyor belt can be limited and blocked by the second flow guiding structure 202 from the side surface, so that the gangue falling into the conveyor belt is prevented from drilling out of the conveyor belt from the side surface. Moreover, the arrangement of the different slopes can enable the gangue slag falling into the conveying belt through the first diversion structure 201 to fall into the middle of the conveying belt in a concentrated manner, and the triangular area between the extension line of the first diversion structure 201 and the second diversion structure 202 cannot accumulate excessive gangue slag, so that the gangue slag cannot be extruded out through the second diversion structure 202, the conveying efficiency is guaranteed, the lower space of the main beam is effectively protected, and meanwhile, gaps between the conveying belt and the inner wall of the channel 101 are guaranteed not to accumulate the gangue slag.
Further, as shown in fig. 1, in the present embodiment, the connection between the first flow guiding structure 201 and the inner wall of the channel 101 is located outside the first slag hole 102, and the connection between the first flow guiding structure 201 and the second flow guiding structure 202 has two points of intersection with the first slag hole. So set up, can guarantee that the gangue slag that falls from first album of slag hole 102 can all fall into on the conveyer belt, and after part gangue slag enters into girder body 1 inside through first album of slag hole 102 moreover, can fall into on the conveyer belt through first water conservancy diversion structure 201 for the conveyer belt is obviously reduced by the number of times of gangue slag striking, guarantees the life of conveyer belt.
Further, in the present embodiment, the distance between the ends of the two first flow guiding structures 201 in the channel 101 that are far from the inner wall of the channel 101 (i.e., the ends that connect the second flow guiding structures 202) is 0.5 times or less of the roadway radius (i.e., the cross-sectional circular radius of the roadway). Because, in the TBM tunneling machine, the main beam is usually arranged at the center of the cutterhead or at a position below the center of the cutterhead, so that the main beam is positioned on the axis of the roadway or at a position below the axis, the distance from the main beam position to the top of the roadway is about the radius of the roadway. Meanwhile, the gangue slag falling off from the finger-shaped shield falls into the guide of the guide structure from the top of the roadway and is thrown into the conveyor belt in the main beam body 1 in a parabolic mode, so that a first connecting line is formed by connecting the first guide structure, the edge of the first slag collecting hole and the top of the roadway, a right triangle is formed between the first connecting line and the second connecting line from the main beam body 1 to the top of the roadway and a third connecting line, extending towards the second connecting line, of the first guide structure, in the embodiment, an angle of 30 degrees is formed between the first connecting line and the second connecting line, at the moment, the length of the third connecting line is 0.5 times of the roadway radius, and the arrangement can ensure that most of the gangue slag thrown into the conveyor belt in a parabolic mode through the guide structure can fall onto the conveyor belt through the first guide structure 201. In this embodiment, the distance between the end portions of the two first diversion structures 201 may be equal to the length of the third connecting line, so that the gangue slag thrown in a parabolic manner can be ensured to be thrown into the conveyor belt smoothly, and most of the gangue slag can be diverted onto the conveyor belt through the first diversion structures 201, so that the impact between the gangue and the conveyor belt is effectively reduced, and the service life of the conveyor structure is ensured. Of course, if the main beam body 1 is arranged at a lower position, the distance between the ends of the two first guide structures 201 may be appropriately increased, so long as it is ensured that the gangue slag can smoothly fall into the conveyor belt, and thus the above-described effect can be ensured. Of course, the distance can be further reduced, namely, the roadway radius is less than 0.5 times, because when the roadway radius is reduced, most of gangue slag can be further ensured to be guided into the conveyor belt through the first guide structures 201, and at the moment, the conveyor belt between the two first guide structures 201 is ensured to have enough conveying capacity.
Further, in the present embodiment, the included angle α between the end of the first flow guiding structure 201 away from the inner wall and the horizontal plane is 30 ° or more and 45 ° or less, and the included angle β between the end of the second flow guiding structure 202 away from the inner wall and the horizontal plane is in the range: beta is more than or equal to 60 degrees and less than or equal to 90 degrees. So set up, can make first water conservancy diversion structure 201 can cooperate above-mentioned distance to arrange and effectively accept gangue slag, guarantee simultaneously that gangue slag can fall into the conveyer belt smoothly and not stop on first water conservancy diversion structure 201 through first water conservancy diversion structure 201. Meanwhile, the second flow guiding structure 202 can realize further flow guiding on the basis of the first flow guiding structure 201, and importantly, the second flow guiding structure 202 can realize coal gangue slag on the side limiting conveyor belt, so that the coal gangue slag is prevented from staying above the end part of the conveyor belt, and meanwhile, the range that the coal gangue slag is prevented from extruding out of the conveyor belt from the end part of the conveyor belt is ensured.
Further, in the present embodiment, the width of the conveyor belt is greater than the width between the two second flow guiding structures 202. So set up, can prevent to follow the problem that the gangue slag that extrudes between second water conservancy diversion structure 202 and the conveyer belt is unable to convey and directly falls into the gap alone, guarantee to be continued conveying, can prevent moreover that it from directly falling into the below of girder body 1.
Furthermore, as shown in fig. 1, in the present embodiment, the girder body 1 includes a first girder body 103 and a second girder body 104, wherein slag holes 105 are provided on the bottom surfaces of the first girder body 103 and the second girder body 104. By the arrangement, slag removal and slag removal of individual gangue slag extruded from the conveyor belt can be realized, and the fact that the gangue slag is not accumulated in the main beam body 1 is ensured.
Further, in the present embodiment, the top surface of the first main beam body 103 includes a first plane 1031 and a second inclined plane 1032, a lower end of the second inclined plane 1032 is connected to the second main beam body 104, a higher end of the second inclined plane 1032 is connected to one end of the first plane 1031, the first slag collecting hole 102 is disposed on the first plane 1031, and the first slag collecting hole 102 is disposed near an end of the second inclined plane 1032, and the second inclined plane 1032 is provided with the second slag collecting hole 106. So set up, the gangue slag that produces when throwing gangue slag to first album of slag hole 102 through outside water conservancy diversion structure does not throw into the inside gangue slag hole 106 of girder body 1 can directly get into through second inclined plane 1032, perhaps when girder body 1 takes place to remove, the gangue slag of remaining on first girder body 103 can get into in the second album slag hole 106 through relative movement through second inclined plane 1032, can guarantee like this that there is not the gangue slag of outflow outside girder body 1, guarantee the clean and tidy of environment, guarantee the effective clearance of gangue slag and transport.
In the present embodiment, the second slag collecting hole 106 is provided at the middle of the second inclined surface 1032. By the arrangement, the coal gangue slag can be ensured to smoothly enter the second slag collecting hole 106, and the phenomenon that the longer travel of the coal gangue deviates from the second slag collecting hole 106 and flows to the position outside the main beam body 1 is avoided. Furthermore, in the present embodiment, a flow guide groove (not shown) connecting the first plane 1031 and the second slag hole 106 may be provided on the second inclined surface 1032. This ensures that gangue slag that does not enter the main girder body 1 through the first slag collecting hole 102 can smoothly enter the conveyor belt in the main girder body 1 through the second slag collecting hole 106.
Further, as shown in fig. 1, in the present embodiment, a plurality of first through holes 107 are arranged on the side wall of the second main beam body 104 at intervals, and the first through holes 107 are arranged near the flow guiding structure 2. So set up, can monitor and overhaul the operation between water conservancy diversion structure 2 and the conveyer belt in the second girder body 104 through first through-hole 107, can guarantee like this that the problem that can not take place the stifled gap of gangue broken slag card in the second girder body 104 appears, guarantee that the overall operation is smooth and easy.
Moreover, the slag outlet 105 and the first through hole 107 are required to be plugged when the equipment is in operation, and the slag outlet 105 and the first through hole 107 are opened for slag removal maintenance operation when the equipment is out of operation, and the slag outlet 105 and the first through hole 107 can also play a role in ventilation, so that the main beam body 1 can be ensured not to accumulate gas, and the environmental safety is ensured.
According to the scheme of the invention, when a large amount of gangue slag falling off from the top wall position of a roadway supported by the finger-shaped shield is conveyed into the main beam body 1 through the guide structure, the gangue slag can smoothly fall onto the conveying belt through the guide structure 2 and be discharged, and because of the arrangement of the first guide structure 201 and the second guide structure 202 in the guide structure 2, part of the gangue slag can fall off from the upper part and then enter the conveying belt through the first guide structure 201, the gangue slag entering the conveying belt can be limited by the second guide structure 202 on the side surface of the gangue slag, and the second guide structure 202 can prevent the gangue slag from extruding from a gap between the gangue slag and the conveying belt to cause falling-off conveying and conveying damage, so that the main beam device for the TBM heading machine can effectively ensure the conveying efficiency of the gangue slag and the service life of the conveying structure and ensure the clean environment of the main beam.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (7)
- A main beam device for a tbm heading machine, comprising: the main beam body is provided with a through channel along the axial direction, the two opposite side walls of the channel are respectively provided with the flow guide structure, and the main beam body is provided with a first slag collecting hole communicated with the channel;the flow guiding structure comprises a first flow guiding structure connected with the inner wall of the channel, and a second flow guiding structure connected with the first flow guiding structure, wherein the slope of the second flow guiding structure is larger than that of the first flow guiding structure;the conveyor belt is arranged on one side of the second diversion structure far away from the first diversion structure, and the conveyor belt is arranged close to the second diversion structure;projecting towards the vertical direction, wherein the joint of the first flow guiding structure and the inner wall of the channel is positioned at the outer side of the first slag collecting hole, and the joint of the first flow guiding structure and the second flow guiding structure is provided with two intersecting points with the first slag collecting hole;the distance between one ends of the two first diversion structures far away from the inner wall of the channel is less than 0.5 times of the radius of the roadway;the included angle alpha between one end of the first flow guiding structure far away from the inner wall and the horizontal plane is more than or equal to 30 degrees and less than or equal to 45 degrees, and the included angle beta between one end of the second flow guiding structure far away from the inner wall and the horizontal plane is in the range of: beta is more than or equal to 60 degrees and less than or equal to 90 degrees.
- 2. A TBM heading machine main beam arrangement as claimed in claim 1 wherein the width of the conveyor belt is greater than the width between the two second flow directing formations.
- 3. The main beam device for a TBM heading machine as claimed in claim 1, wherein the main beam body includes a first main beam body and a second main beam body, and slag holes are provided on bottom surfaces of the first main beam body and the second main beam body.
- 4. A main beam device for a TBM heading machine as claimed in claim 3 wherein the top surface of said first main beam body includes a first planar surface and a second inclined surface, the lower end of said second inclined surface being connected to said second main beam body, the higher end of said second inclined surface being connected to one end of said first planar surface;the first slag collecting hole is arranged on the first plane, and the first slag collecting hole is arranged near the end part of the second inclined plane;and a second slag collecting hole is formed in the second inclined plane.
- 5. The main beam device for a TBM heading machine as recited in claim 4, characterized in that said second slag collecting hole is provided in a middle portion of said second inclined surface.
- 6. The main beam device for a TBM heading machine as recited in claim 4, characterized in that a diversion trench connecting said first plane and said second slag collecting hole is provided on said second inclined plane.
- 7. A TBM heading machine main beam arrangement as claimed in any one of claims 3 to 6 wherein a plurality of first through holes are spaced in a side wall of the second main beam body, the first through holes being disposed adjacent the flow directing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310296001.4A CN116066118B (en) | 2023-03-24 | 2023-03-24 | Main beam device for TBM tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310296001.4A CN116066118B (en) | 2023-03-24 | 2023-03-24 | Main beam device for TBM tunneling machine |
Publications (2)
| Publication Number | Publication Date |
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| CN116066118A CN116066118A (en) | 2023-05-05 |
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| CN216974842U (en) * | 2022-03-21 | 2022-07-15 | 江苏神盾工程机械有限公司 | Novel main beam structure of TBM (tunnel boring machine) |
| CN217055170U (en) * | 2022-03-10 | 2022-07-26 | 江苏神盾工程机械有限公司 | Rock lane TBM entry driving machine host computer front portion structure |
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| US7832960B2 (en) * | 2008-12-17 | 2010-11-16 | The Robbins Company | All-conditions tunnel boring machine |
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| GB793401A (en) * | 1956-05-03 | 1958-04-16 | Conveying Developments Ltd | Improvements in or relating to transfer units used in connection with endless conveyor belts |
| GB1506023A (en) * | 1976-07-23 | 1978-04-05 | Dosco Overseas Eng Ltd | Lining shield |
| JPH0666087A (en) * | 1992-08-19 | 1994-03-08 | Ohbayashi Corp | Tunnel excavator and method of conveying sediment |
| CN102745483A (en) * | 2012-06-29 | 2012-10-24 | 中国铁建重工集团有限公司 | Muck remover of TBM (tunnel boring machine) main belt conveyer |
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