Tunneling machine discharge system under tuff geological conditions

Abstract

The invention provides a kind of tuff geological conditions under vertical shaft boring machine discharging system, for solving the problem that the vertical shaft boring machine in prior art cannot remove the sticky mud-like rock debris on its scraper or the solid rock debris after the mud-like rock debris solidifies when using scraper method to discharge rock debris.To achieve the above-mentioned purpose and other related purposes, the invention provides a kind of tuff geological conditions under vertical shaft boring machine discharging system, the discharging system includes cutter head body, lifting unit of discharging channel located at the center of cutter head, discharging unit containing conveying subunit and scraper, floating soil cleaning subunit and solidified tuff cleaning subunit, a discharging system that can clean the scraper in the discharging unit in time is obtained, thereby solving the problem that the vertical shaft boring machine in prior art cannot remove the sticky mud-like rock debris on its scraper or the solid rock debris after the mud-like rock debris solidifies when using scraper method to discharge rock debris.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of shaft boring machines, in particular to a shaft boring machine slag discharge system under tuff geological conditions. BACKGROUND

[0002] Shaft is an important engineering structure for human to develop underground space and resources, and one of the most widely used mechanical shaft building methods at home and abroad is to use shaft drilling machine.

[0003] As a kind of shaft drilling machine, full-face tunneling machine adopts full-face cutter head to excavate wellbore from top to bottom, and the excavated rock slag is continuously lifted vertically from underground to the ground, so that the construction does not need to excavate slag hole and underground slag discharge channel, has good adaptability to construction conditions, high construction efficiency, small safety risk, and can also implement well wall support, tunneling guide and other operation processes simultaneously, and is a kind of shaft drilling machine frequently used at present.

[0004] In the patent CN110735640B, a "shaft boring machine and cutter head thereof" is disclosed, which specifically discloses a cutter head, which is provided with a plurality of side opening slag containing grooves on the cutter head surface, which greatly increases the slag discharge efficiency of the shaft boring machine, but the conveying device inside the slag containing groove uses a scraper method for slag discharge, and when encountering tuff containing water geological conditions, tuff, as a kind of volcanic clastic rock, will become a kind of mud after absorbing water, which has certain viscosity and will stick to the scraper, and once solidified, will be deformed into a kind of solid similar to cement, which is difficult to clean in the underground, and further causes the blockage of the slag discharge channel, seriously affecting the slag discharge efficiency of the shaft boring machine.

[0005] In summary, the current shaft boring machine has the problem that when using the scraper method for slag discharge, it cannot remove the muddy rock slag sticking to the scraper or the solidified solid rock slag after the muddy rock slag is solidified. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a shaft boring machine slag discharge system under tuff geological conditions, which is used to solve the problem that the current shaft boring machine cannot remove the muddy rock slag sticking to the scraper or the solidified solid rock slag after the muddy rock slag is solidified when using the scraper method for slag discharge.

[0007] The present application provides a shaft boring machine slag discharge system under tuff geological conditions, characterized in that the slag discharge system comprises:

[0008] The cutter head body is provided with rotation;

[0009] The lifting unit is arranged in the discharge channel and used to lift the rock residue on the working face out of the working face.

[0010] The discharge unit includes a scraper used to move the rock residue generated on the working face and a conveying subunit used to provide moving power for the scraper.

[0011] The scraper scrapes the rock residue generated on the working face, the side wall of the scraper scrapes the rock residue to move towards the discharge channel, the surface of the scraper scraping the rock residue is a scraping surface, and the conveying end of the conveying subunit drives the scraper to convey the rock residue on the working face to the lifting unit in the discharge channel.

[0012] The cleaning unit includes a floating dust cleaning subunit and a solidified tuff cleaning subunit, and the moving stroke of the scraper includes a reset stroke and a scraping stroke.

[0013] The floating dust cleaning subunit includes a floating dust scraper, which is slidingly arranged on the cutter body and used to scrape the floating dust on the scraper when the floating dust scraper works.

[0014] The solidified tuff cleaning subunit includes a solidified tuff cleaning plate, a resistance data collector and a data processing element, the solidified tuff cleaning plate is slidingly arranged on the scraper and used to clean the solidified tuff residue on the scraper, the resistance data collector is used to collect resistance data of the floating dust scraper when the floating dust scraper slides, and the signal input end of the data processing element is electrically connected with the signal output end of the resistance data collector, and the data processing element controls the solidified tuff cleaning plate to clean the solidified tuff residue on the scraper according to the output signal of the resistance data collector.

[0015] As an optional solution, the floating dust cleaning subunit further includes a first hydraulic cylinder.

[0016] The pushing end of the first hydraulic cylinder is fixedly connected with the floating dust scraper, the extension direction of the first hydraulic cylinder is parallel to the scraping surface of the scraper, and the first hydraulic cylinder provides power for the sliding of the floating dust scraper.

[0017] As an optional solution, the solidified tuff cleaning subunit further includes a second hydraulic cylinder, an air cylinder and a fixing plate.

[0018] The pushing end of the second hydraulic cylinder is fixedly connected with the fixing plate, the pushing end of the second hydraulic cylinder drives the fixing plate to move, the extension direction of the second hydraulic cylinder is parallel to the scraping surface of the scraper, and the second hydraulic cylinder drives the fixing plate to move along a direction parallel to the scraping surface of the scraper.

[0019] The cylinder is fixedly installed on the fixed plate, a pushing end of the cylinder is fixedly connected with the solidified tuff cleaning plate, and an extension direction of the cylinder is perpendicular to a scraping surface of the scraper.

[0020] As an option, the solidified tuff cleaning subunit further comprises a force relieving plate.

[0021] The force relieving plate is fixedly installed on the fixed plate.

[0022] When the solidified tuff cleaning plate cleans the scraper, the scraper is located between the solidified tuff cleaning plate and the force relieving plate, and the force relieving plate and the scraper are attached to each other.

[0023] As an option, the solidified tuff cleaning subunit further comprises a plurality of protrusions, the plurality of protrusions are fixedly installed on the solidified tuff cleaning plate, and the protrusions are used for crushing the solidified tuff slag remaining on the scraper.

[0024] As an option, the conveying subunit is a ring conveyor.

[0025] The ring conveyor comprises a conveyor body, a chain and a sprocket, at least two sprockets are arranged on the conveyor body, and a power end of the conveyor body provides rotating power for the sprockets.

[0026] A chain is arranged between the sprockets, and the sprockets are engaged with the chain.

[0027] The scraper is arranged on the chain along an outer contour of the chain, and the scraper is driven to move by the chain when the chain moves.

[0028] A slag inlet is arranged through a side wall of the slag discharge channel, and the slag scraped by the scraper during movement of the chain moves into the lifting unit of the slag discharge channel through the slag inlet.

[0029] As an option, the conveying subunit further comprises a guide pipe.

[0030] The guide pipe is fixedly installed at the slag inlet of the slag discharge channel, one end of the guide pipe is in communication with an internal space of the slag discharge channel, the other end of the guide pipe extends out of an outer side wall of the slag discharge channel, and a bottom end surface of the guide pipe is attached to a working surface.

[0031] A sprocket closest to the slag discharge channel among the plurality of sprockets is a first sprocket, and the first sprocket is located in the guide pipe.

[0032] When the chain drives the scraper to move, the scraper sends the rock residue on the working face into the lifting unit through the guide pipe.

[0033] As an option, the conveying subunit further comprises a ring-shaped guide rail;

[0034] The ring-shaped guide rail comprises a guide rail body and a guide chute;

[0035] The guide rail body is located in the chain, and the outer wall of the guide rail body is provided with the guide chute;

[0036] The scraper is slidingly installed on the chain, and the sliding direction of the scraper is perpendicular to the working face;

[0037] The ball is fixedly installed on the scraper, and the ball is rollingly installed in the guide groove.

[0038] As an option, the ring-shaped guide rail is divided into a first guide rail segment, a second guide rail segment and a third guide rail segment;

[0039] The third guide rail segment is located between the first guide rail segment and the second guide rail segment, the first guide rail segment is closer to the residue discharging channel than the second guide rail segment, the first guide rail segment is fixedly installed on the conveyor body, the second guide rail segment is slidingly arranged on the conveyor body, and the sliding direction of the second guide rail segment is perpendicular to the working face;

[0040] The guide surface of the first guide rail segment is a first guide surface, the guide surface of the second guide rail segment is a second guide surface, the first guide surface is parallel to the second guide surface, the first guide surface is parallel to the moving direction of the chain, and the first guide surface is parallel to the working face;

[0041] The third guide rail segment comprises a first sliding rail and a second sliding rail, the guide chute of the second sliding rail extends at both ends and penetrates through the sliding rail body of the second sliding rail, the second sliding rail is hinged to the second guide rail segment, the rotation axis of the second sliding rail is perpendicular to the sliding direction of the scraper, the guide chute of the second sliding rail is in communication with the guide chute of the second guide rail segment, and the ball rolls from the guide chute of the second guide rail segment into the guide chute of the second sliding rail;

[0042] The guide chute of the first sliding rail extends at both ends and penetrates through the sliding rail body of the first sliding rail, the first sliding rail is hinged to the first guide rail segment, the rotation axis of the first sliding rail is parallel to the rotation axis of the second guide rail, the guide chute of the first sliding rail is in communication with the guide chute of the first guide rail segment, the guide chute of the first sliding rail is slidingly connected with the sliding rail body of the second sliding rail, the sliding direction of the sliding rail body of the second sliding rail is the same as the guide direction of the guide chute of the first sliding rail, and the ball rolls from the guide chute of the first sliding rail into the guide chute of the first guide rail segment.

[0043] As an option, the third guide rail section comprises two first sliding rails and two second sliding rails, and each of the first guide rail section and the second guide rail section comprises two connection points;

[0044] The moving track of the scraper when moving along the first guide rail section is a first moving track, and the moving track of the scraper when moving along the second guide rail section is a second moving track;

[0045] The two hinge positions of the first guide rail section and the two first sliding rails are a first connection point and a third connection point respectively, the first connection point and the third connection point are both located outside the guide pipe, and the third connection point is located after the first connection point along the first moving track,

[0046] The two hinge positions of the second guide rail section and the two second sliding rails are a second connection point and a fourth connection point respectively, the fourth connection point is located before the second connection point along the second moving track, the chain wheel closest to the outer edge of the cutter body in the plurality of chain wheels is a second chain wheel, the moving direction of the scraper for scraping the rock slag into the slag discharge channel from the second chain wheel position is a third direction, the position where the scraper starts to move along the third direction when moving along the second guide rail section is a first starting point, and the fourth connection point is located before the first starting point along the second direction;

[0047] The first sliding rail at the position of the first connection point is in sliding connection with the second sliding rail at the position of the second connection point, and the first sliding rail at the position of the third connection point is in sliding connection with the second sliding rail at the position of the fourth connection point.

[0048] As described above, the tamping slag system of the shaft boring machine under the tuff geological condition has at least the following beneficial effects:

[0049] 1. The application has a cleaning unit including a floating soil cleaning subunit and a solidified tuff cleaning subunit. The floating soil cleaning subunit slides and cleans the scraping surface of the scraper in the slag discharge unit by using the floating soil scraper after the slag discharge unit including the scraper and the conveying subunit has worked for a certain period of time. The solidified tuff cleaning subunit collects the resistance received by the floating soil scraper during the above process through the resistance data collector arranged therein and transmits the data to the data processing element. The data processing element determines whether there is solidified tuff rock slag remaining on the scraper by judging the resistance data and controls the solidified tuff cleaning plate to clean the scraping surface of the scraper, ensuring the long-term stable operation of the scraper, thereby solving the problem that the shaft boring machine cannot remove the sticky mud-like rock slag on its scraper or the solidified solid rock slag after the mud-like rock slag solidifies when using the scraper method for slag discharge in the prior art.

[0050] 2. The present application increases the efficiency of the slag removal system by setting the scraper slide on the chain, so that the scraper can always adhere to the uneven working surface. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 shows the overall schematic diagram of the present application;

[0052] Figure 2 shows the conveying unit display diagram of the present application;

[0053] Figure 3 shows the local enlarged view of the present application at A; Figure 2

[0054] Figure 4 shows the cleaning unit display diagram of the present application;

[0055] Figure 5 shows the local enlarged view of the present application at B; Figure 4

[0056] Figure 6 shows the fixed plate sectional view of the solidified tuff cleaning subunit of the present application;

[0057] Figure 7 shows the schematic diagram of the ring guide rail of the present application;

[0058] Figure 8 shows the display diagram of the first guide rail section and the second guide rail section of the ring guide rail of the present application when they are flush;

[0059] Figure 9 shows the display diagram of the first guide rail section and the second guide rail of the ring guide rail of the present application when the guide surfaces are misaligned;

[0060] Figure 10 shows the schematic diagram of the ring conveyor of the present application;

[0061] Figure 11 shows the schematic diagram of the scraper structure of the present application;

[0062] Figure 12 shows the working flow chart of the solidified tuff cleaning subunit of the present application;

[0063] in the figure:

[0064] 11. cutter head body; 12. slag removal channel; 13. slag removal unit; 14. screw rod;

[0065] 21. floating soil scraper; 22. first hydraulic cylinder;

[0066] 31. solidified tuff cleaning plate; 32. fixed plate; 33. force relief plate; 34. second hydraulic cylinder; 35. air cylinder;​​

[0067] 41. Sprocket; 42. Chain; 43. Scraper; 44. Chain carrier; 45. Slide bar; 46. Ball; 47. Guide channel;

[0068] 51. Guide rail body; 52. Guide chute; 53. First slide rail; 54. Second slide rail; 55. First guide rail segment; 56. Second guide rail segment; 57. Third guide rail segment; 58. First connecting point; 59. Second connecting point. DETAILED DESCRIPTION

[0069] The following embodiments of the present application are illustrated by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0070] Please refer to Figures 1 to 12 . It should be understood that the structure, proportion, size, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the defined conditions that the present application can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope covered by the disclosed technology content of the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0071] The following embodiments are only for illustration. The various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0072] Please refer to Figures 1 to 12 , the present application provides a tuff geological conditions under the vertical shaft heading machine slag discharge system, characterized in that, the slag discharge system comprises:

[0073] Cutter head body 11, the cutter head body 11 from the rotation is arranged;

[0074] Lifting unit, the cutter head body 11 center position is provided with a slag discharge channel 12, the slag discharge channel 12 is provided with a lifting unit for lifting the rock slag on the working face out of the working face;

[0075] The working surface is an inclined surface, the center position of the working surface is lower than the outer edge of the working surface, and a part of the rock slag on the working surface without adhesion will naturally slide to the bottom of the slag discharge channel 12 due to gravity;

[0076] The lifting unit uses a screw rod 14, a power device of the screw rod 14 is arranged at a level of the cutter head body 11 higher than the working face, the screw rod 14 lifts the rock residue generated on the working face out of the working face, a bottom end of the screw rod 14 is in contact with the working face, and the screw rod 14 can directly lift the rock residue located at the lowest point of the working face out of the working face through rotation;

[0077] The rock residue removal unit 13 includes a scraper 43 for driving the rock residue generated on the working face to move and a conveying subunit for providing moving power for the scraper 43;

[0078] The scraper 43 scrapes the rock residue generated on the working face, the scraper 43 is shallowly inserted into the working face near a side wall of the working face, the scraper 43 can drive the rock residue cut out of the cutter head on the working face to move when moving, a side wall of the scraper 43 scrapes the rock residue to move towards the rock residue removal channel 12, and a surface of the scraper 43 scraping the rock residue is a scraping surface, and a conveying end of the conveying subunit drives the scraper 43 to convey the rock residue on the working face to the lifting unit in the rock residue removal channel 12;

[0079] The cleaning unit includes a floating dust cleaning subunit and a solidified tuff cleaning subunit, a moving stroke of the scraper 43 includes a reset stroke and a scraping stroke, the reset stroke is that the scraper 43 moves from the rock residue removal channel 12 to the outside of the cutter head, and the scraping stroke is that the scraper 43 moves from the outside of the cutter head to the rock residue removal channel 12;

[0080] The floating dust cleaning subunit includes a floating dust scraper 21, the floating dust scraper 21 is slidably arranged on the cutter head body 11, and the floating dust scraper 21 scrapes the floating dust on the scraper 43 when working;

[0081] The solidified tuff cleaning subunit includes a solidified tuff cleaning plate 31, a resistance data collector and a data processing element, the solidified tuff cleaning plate 31 slides and cleans the solidified tuff rock residue remaining on the scraper 43, the resistance data collector collects resistance data of the floating dust scraper 21 when sliding, a signal input end of the data processing element is electrically connected with a signal output end of the resistance data collector, and the data processing element controls the solidified tuff cleaning plate 31 to clean the solidified tuff rock residue remaining on the scraper 43 according to an output signal of the collector;

[0082] When the slagging system works, the bottom end surface of the scraper 43 is inserted into the working face and moves under the driving of the conveying subunit, and the scraper 43 can scrape the hard rock slag or the soft mud-like rock slag mixed with water into the slagging channel 12. If the hard rock slag or the soft mud-like rock slag that has not been completely hardened is scraped by the floating earth scraper 21, the resistance that the floating earth scraper 21 receives will change greatly. The frozen tuff cleaning subunit composed of the frozen tuff cleaning plate 31, the resistance data collector and the data processing element will collect and judge the resistance change. Under the control of the data processing element, the frozen tuff cleaning plate 31 at the next scraper 43 station will slide and clean the frozen tuff rock slag remaining on the scraper 43, so that the surface of the scraper 43 is clean, the running pressure of the conveying subunit when encountering the mud-like rock slag in the working face is reduced, a large amount of frozen tuff rock slag on the scraping surface of the scraper 43 is avoided, the normal movement of the scraper on the rock slag in the working face is ensured, and thus the problem that the vertical shaft boring machine cannot remove the mud-like rock slag adhered to the scraper 43 or the solid rock slag formed after the mud-like rock slag is frozen when the scraper 43 is used to remove the slag is solved.

[0083] In the embodiment, please refer to Figures 1 to 12 , the floating earth cleaning subunit further comprises a first hydraulic cylinder 22.

[0084] The pushing end of the first hydraulic cylinder 22 is fixedly connected with the floating earth scraper 21, the extension direction of the first hydraulic cylinder 22 is parallel to the scraping surface of the scraper 43, and the first hydraulic cylinder 22 provides power for the sliding of the floating earth scraper 21.

[0085] The cutter head body 11 is provided with a fixed support, and the cylinder body of the first hydraulic cylinder 22 is fixedly installed in the fixed support.

[0086] The rock slag remaining on the scraper 43 that can be scraped by the floating earth scraper 21 is ordinary granular rock slag or tuff rock slag mixed with water into mud;

[0087] The floating earth scraper 21 slides to the working face in a direction parallel to the scraping surface of the scraper 43 under the driving of the first hydraulic cylinder 22, the side wall for scraping of the floating earth scraper 21 and the side wall where the scraping surface of the scraper 43 is located are always attached to each other when the floating earth scraper 21 slides, and the floating earth scraper 21 cannot clean the frozen tuff rock slag remaining on the scraper 43;

[0088] The first hydraulic cylinder 22 and the floating soil scraper 21 work, the conveying sub-unit cooperates with the push-pull rate of the first hydraulic cylinder 22 to stop, the floating soil scraper 21 is scraped in the moving process driven by the first hydraulic cylinder 22, the floating soil scraper 21 scrapes the side wall on which the scraping surface of the scraper 43 is located, the floating soil scraper 21 is scraped to the position where the solidified tuff slag remains, and is returned under the resistance, so that the floating soil scraper 21 can distinguish the solidified tuff slag and the tuff slag still in the mud state.

[0089] In the embodiment, referring to Figures 1 to 12 , the solidified tuff cleaning sub-unit further comprises a second hydraulic cylinder 34, an air cylinder 35 and a fixed plate 32;

[0090] The pushing end of the second hydraulic cylinder 34 is fixedly connected with the fixed plate 32, the pushing end of the second hydraulic cylinder 34 drives the fixed plate 32 to move, the extension direction of the second hydraulic cylinder 34 is parallel to the scraping surface of the scraper 43, and the second hydraulic cylinder 34 drives the fixed plate 32 to move along the direction parallel to the scraping surface of the scraper 43;

[0091] The fixed support extending from the cutter body 11 has two mounting points, one for fixing the cylinder body of the first hydraulic cylinder 22 and the other for mounting the cylinder body of the second hydraulic cylinder 34, and the cylinder body of the second hydraulic cylinder 34 is fixedly mounted on the fixed support;

[0092] The air cylinder 35 is fixedly mounted on the fixed plate 32, the pushing end of the air cylinder 35 is fixedly connected with the solidified tuff cleaning plate 31, the extension direction of the air cylinder 35 is perpendicular to the scraping surface of the scraper 43, the air cylinder 35 drives the solidified tuff cleaning plate 31 to move along the direction perpendicular to the scraping surface of the scraper 43, and the solidified tuff cleaning plate 31 cleans the solidified tuff slag remaining on the scraper 43 under the driving of the air cylinder 35;

[0093] The solidified tuff cleaning plate 31 is slidingly mounted on the fixed plate 32, the sliding direction of the solidified tuff cleaning plate 31 is perpendicular to the scraping surface of the scraper 43, and the solidified tuff cleaning plate 31 synchronously moves with the fixed plate 32 when the fixed plate 32 moves along the extension direction of the second hydraulic cylinder 34;

[0094] The resistance data collector transmits the data to the data processing element through the signal output end after collecting the resistance value of the floating soil scraping plate 21. The data processing element judges whether the solidified tuff rock debris remains on the scraping plate 43 by comparing the change of the resistance value of the floating soil scraping plate 21. The data processing element controls the second hydraulic cylinder 34 to drive the fixed plate 32 to move along the direction parallel to the scraping surface of the scraping plate 43. When the fixed plate 32 is driven by the second hydraulic cylinder 34 to move to the position parallel to the scraping surface of the scraping plate 43, the data processing element controls the cylinder 35 to drive the solidified tuff cleaning plate 31 to repeatedly press the scraping surface of the scraping plate 43, so as to re-crush the solidified tuff rock debris.

[0095] In the embodiment, please refer to Figures 1 to 12 , the solidified tuff cleaning subunit further comprises a force relieving plate 33.

[0096] The force relieving plate 33 is fixedly installed on the fixed plate 32, and the force relieving plate 33 is parallel to the solidified tuff cleaning plate 31. The size of the force relieving plate 33 is consistent with the size of the scraping plate 43.

[0097] When the solidified tuff cleaning plate 31 cleans the scraping plate 43, the scraping plate 43 is located between the solidified tuff cleaning plate 31 and the force relieving plate 33, and the force relieving plate 33 and the scraping plate 43 are mutually attached.

[0098] When the solidified tuff cleaning plate 31 works, the fixed plate 32 is driven by the second hydraulic cylinder 34 to move between the solidified tuff cleaning plate 31 and the force relieving plate 33. When the solidified tuff cleaning plate 31 repeatedly hammers the scraping plate 43, the force relieving plate 33 bears a part of the excessive hammering force behind the scraping plate 43. The force relieving plate 33 makes the scraping plate 43 not displace when it is subjected to the solidified tuff cleaning plate 31, thereby avoiding the breakage of the connection position between the scraping plate 43 and the conveying subunit due to hammering.

[0099] In the embodiment, please refer to Figures 1 to 12 , the solidified tuff cleaning subunit further comprises a plurality of protrusions. The plurality of protrusions are fixedly installed on the solidified tuff cleaning plate 31, and the protrusions are used to crush the solidified tuff rock debris remaining on the scraping plate 43.

[0100] In the embodiment, please refer to Figures 1 to 12 , the conveying subunit is a ring conveyor.

[0101] The ring conveyor comprises a conveyor body, a chain 42 and a sprocket 41, at least two sprockets 41 are arranged on the conveyor body, the power end of the conveyor body provides rotating power for the sprockets 41, and the two ends of the conveyor body are fixedly installed on the outer edge of the cutter body 11 and the slag discharge channel 12;

[0102] The chain 42 is arranged between the sprockets 41, the sprockets 41 are engaged with the chain 42, and the trajectory of the chain 42 is the same as the working face inclination angle;

[0103] The scraper 43 is arranged on the chain 42 along the outer contour of the chain 42, and the scraper 43 is driven to move by the chain 42 when the chain 42 moves;

[0104] The side wall of the slag discharge channel 12 is provided with a slag inlet, and the rock slag scraped by the scraper 43 during the movement of the chain 42 moves to the lifting unit of the slag discharge channel 12 through the slag inlet;

[0105] The side wall of the slag discharge channel 12 is the same as the outer edge of the screw rod 14, the movement rate of the chain 42 is matched with the rotation rate of the screw rod 14, and the interval of the rock slag brought to the slag discharge channel 12 by the scraper 43 satisfies the natural falling of the rock slag on the conveying end of the screw rod 14.

[0106] In this embodiment, please refer to Figures 1 to 12 , the conveying subunit further comprises a guide pipe 47;

[0107] The guide pipe 47 is fixedly installed at the slag inlet of the slag discharge channel 12, one end of the guide pipe 47 communicates with the internal space of the slag discharge channel 12, the other end of the guide pipe 47 extends out of the outer side wall of the slag discharge channel 12, and the bottom end face of the guide pipe 47 is attached to the working face;

[0108] The sprocket 41 closest to the slag discharge channel 12 among the plurality of sprockets 41 is a first sprocket, and the first sprocket is located in the guide pipe 47;

[0109] The conveyor body is also located in the guide pipe 47, and the fixed end of the conveyor body extends out of the guide pipe 47 and is fixed on the slag discharge pipe;

[0110] The inner wall of the guide pipe 47 is a smooth inner wall, when the scraper 43 drives the rock slag into the guide pipe 47, the rock slag can slide to the screw rod 14 of the slag discharge channel 12 under the action of gravity;

[0111] When the chain 42 drives the scraper 43 to move, the scraper 43 sends the rock debris on the working surface into the lifting unit through the guide pipe 47;

[0112] The guide pipe 47 helps the scraper 43 to send the rock debris into the lifting unit, avoiding the collision between the outer edge of the scraper 43 and the screw rod 14 when the scraper 43 rotates and extends into the rock debris discharge channel 12.

[0113] In this embodiment, please refer to Figures 1 to 12 , the conveying sub-unit further comprises an annular guide rail;

[0114] The annular guide rail comprises a guide rail body 51 and a guide sliding groove 52;

[0115] The guide rail body 51 is located in the chain 42, and the outer wall of the guide rail body 51 is provided with the guide sliding groove 52;

[0116] The lower end surface of the guide rail body 51 is provided with a blocking block, the bottom end surface of the blocking block is attached to the working surface, and the blocking block divides the moving track of the scraper 43 into a scraping stroke and a reset stroke;

[0117] The scraper 43 is slidingly installed on the chain 42, the sliding direction of the scraper 43 is perpendicular to the working surface, and the scraper 43 is inserted into the working surface at all times;

[0118] The chain 42 is fixedly installed with a chain bracket 44, the scraper 43 is fixedly provided with a sliding rod 45, the sliding rod 45 is perpendicular to the working surface and extends out of the scraper 43, the chain bracket 44 is inserted into the sliding rod 45 and slides along the guide direction of the sliding rod 45, and the maximum sliding distance of the scraper 43 is the slidable length of the sliding rod 45 between the chain brackets 44;

[0119] The ball 46 is fixedly installed on the scraper 43, the side wall of the scraper 43 close to the guide rail body 51 is fixedly installed with a ball bracket, the ball 46 is fixedly installed in the ball bracket, the ball 46 can roll in the ball bracket, the ball bracket does not affect the contact between the ball 46 and the guide sliding groove 52, the ball 46 is rollingly installed in the guide sliding groove 52, and the guide sliding groove 52 is provided with a blocking track to avoid the ball 46 from falling out of the guide sliding groove 52;

[0120] The blocking block can prevent the rock debris from falling out of the scraper 43 from both sides of the scraper 43 when the scraper 43 scrapes, and the ball 46 ensures that the annular guide rail does not affect the sliding of the scraper 43.

[0121] In this embodiment, please refer to Figures 1 to 12The annular guide rail is divided into a first guide rail segment 55, a second guide rail segment 56 and a third guide rail segment 57;

[0122] The third guide rail segment 57 is located between the first guide rail segment 55 and the second guide rail segment 56, the first guide rail segment 55 is closer to the slag discharge channel 12 than the second guide rail segment 56, the first guide rail segment 55 is fixedly installed on the conveyor body, and the second guide rail segment 56 is slidingly arranged on the conveyor body, and the sliding direction of the second guide rail segment 56 is perpendicular to the working face;

[0123] The guide surface of the first guide rail segment 55 is a first guide surface, the guide surface of the second guide rail segment 56 is a second guide surface, the first guide surface is parallel to the second guide surface, the first guide surface is parallel to the moving direction of the chain 42, and the first guide surface is parallel to the working face;

[0124] The blocking block is located below the second guide rail segment 56, and the blocking block moves along with the second guide rail segment 56;

[0125] The third guide rail segment 57 comprises a first sliding rail 53 and a second sliding rail 54, the guide sliding groove 52 of the second sliding rail 54 extends at both ends and penetrates through the sliding rail body of the second sliding rail 54, the second sliding rail 54 is hinged to the second guide rail segment 56, the rotating axis of the second sliding rail 54 is perpendicular to the sliding direction of the scraper 43, the guide sliding groove 52 of the second sliding rail 54 is in communication with the guide sliding groove 52 of the second guide rail segment 56, and the ball 46 rolls from the guide sliding groove 52 of the second guide rail segment 56 into the guide sliding groove 52 of the second sliding rail 54;

[0126] The guide sliding groove 52 of the first sliding rail 53 extends at both ends and penetrates through the sliding rail body of the first sliding rail 53, the first sliding rail 53 is hinged to the first guide rail segment 55, the rotating axis of the first sliding rail 53 is parallel to the rotating axis of the second guide rail, the guide sliding groove 52 of the first sliding rail 53 is in communication with the guide sliding groove 52 of the first guide rail segment 55, the guide sliding groove 52 of the first sliding rail 53 is in sliding connection with the sliding rail body of the second sliding rail 54, the sliding direction of the sliding rail body of the second sliding rail 54 is the same as the guide direction of the guide sliding groove 52 of the first sliding rail 53, and the ball 46 rolls from the guide sliding groove 52 of the first sliding rail 53 into the guide sliding groove 52 of the first guide rail segment 55;

[0127] The guide sliding groove 52 of the first sliding rail 53 and the guide sliding groove 52 of the second sliding rail 54 are both provided with a guide inclined surface to avoid the ball 46 from falling out of the gap between the guide sliding groove 52 of the first sliding rail 53 and the guide sliding groove 52 of the second sliding rail 54;

[0128] The conveying subunit further comprises a power assembly, a fixed end of the power assembly is arranged on the conveyor body, a power end of the power drill is fixedly connected with the slide rail of the second rail section, and the power assembly provides power for the slide of the slide rail of the second rail section in a direction perpendicular to the working face;

[0129] The power assembly is a plurality of third hydraulic cylinders, cylinder bodies of the third hydraulic cylinders are fixedly arranged on the conveyor body, piston rods of the third hydraulic cylinders are fixedly connected with the second rail section 56, and the third hydraulic cylinders can drive the second rail section 56 to move up and down to change the adhesion of the scraper 43 to the working face by changing the height of the second rail section 56.

[0130] In the embodiment, referring to Figures 1 to 12 The third rail section 57 comprises two first slide rails 53 and two second slide rails 54, and the first rail section 55 and the second rail section 56 each comprise two connection points;

[0131] The moving track of the scraper 43 when moving along the first rail section 55 is a first moving track, and the moving track of the scraper 43 when moving along the second rail section 56 is a second moving track;

[0132] The two hinge positions of the first rail section 55 and the two first slide rails 53 are respectively a first connection point 58 and a third connection point 59, the first connection point 58 and the third connection point 59 are both located outside the guide pipe 47, and the third connection point 59 is located after the first connection point 58 along the first moving track;

[0133] The two hinge positions of the second rail section 56 and the two second slide rails 54 are respectively a second connection point 59 and a fourth connection point, the fourth connection point is located before the second connection point 59 along the second moving track, the chain wheel 41 closest to the outer edge of the cutter head body 11 among the plurality of chain wheels 41 is a second chain wheel, the moving direction of the scraper 43 for scraping the rock slag into the slag discharge channel 12 from the second chain wheel position is a third direction, when the scraper 43 moves along the second rail section 56, the position at which the scraper 43 starts to move in the third direction is a first starting point, and the fourth connection point is located before the first starting point along the second direction;

[0134] The first slide rail 53 at the position of the first connection point 58 is in sliding connection with the second slide rail 54 at the position of the second connection point 59, and the first slide rail 53 at the position of the third connection point 59 is in sliding connection with the second slide rail 54 at the position of the fourth connection point;

[0135] The rotation axes of the two slide rails are parallel, and the sliding directions of the two second slide rails 54 are the same as the guide directions of the first slide rails 53 in sliding connection with the two second slide rails 54.

[0136] In summary, when a shaft tunneling machine slag discharge system under tuff geological conditions is needed, the cutter head body 11 rotates to drive the slag discharge unit 13 containing the ring conveyor and the scraper 43 to rotate, the scraper 43 is driven by the chain 42 and the sprocket 41 of the conveyor to the spiral rod 14 in the slag discharge channel 12 to transport the rock slag generated on the working face, the lower end surface of the scraper 43 is in contact with the working face at all times under the control of the ring guide rail, the cleaning unit starts to work when the scraper 43 is pulled out of the working face, the floating soil scraper 21 slides one by one to clean the scraping surface of the scraper 43 under the cooperation of the conveyor speed and transmits the resistance data to the data processing element through the resistance data collector of the solidified tuff cleaning subunit, the data processing element judges the residual condition of the scraping surface of the scraper 43 and controls the first hydraulic cylinder 22 and the air cylinder 35 to work, the first hydraulic cylinder 22 drives the fixed plate 32 fixed with the solidified tuff cleaning plate 31 and the unloading plate 33 to slide to the working position, the solidified tuff cleaning plate 31 repeatedly hammers the scraping surface of the scraper 43 under the drive of the air cylinder 35 to clean the scraping surface of the scraper 43, so that the solidified tuff rock slag remaining on the scraping surface of the scraper 43 falls down, thereby solving the problem that the shaft tunneling machine cannot remove the sticky mud-like rock slag on the scraper 43 or the mud-like rock slag solidified into solid rock slag after the scraper 43 is used to discharge slag in the prior art.

[0137] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed by the present application should be covered by the claims of the present application.

Claims

1. A slag removal system for a vertical shaft tunneling machine under tuff geological conditions, characterized in that, The slag removal system includes: The cutter head body is configured to rotate. The lifting unit has a slag discharge channel at the center of the cutterhead body, and the slag discharge channel is equipped with a lifting unit for lifting the rock slag from the working face. The slag removal unit includes a scraper for moving the rock slag generated on the working face and a conveying subunit for providing the moving power to the scraper. The scraper scrapes the rock slag generated on the working face, and the side wall of the scraper scrapes the rock slag towards the slag removal channel. The surface of the scraper that scrapes the rock slag is the scraping surface. The conveying end of the conveying subunit drives the scraper to convey the rock slag on the working face to the lifting unit in the slag removal channel. The cleaning unit includes a loose soil cleaning subunit and a solidified tuff cleaning subunit, and the scraper's travel includes a reset travel and a scraping travel. The loose soil cleaning subunit includes a loose soil scraper, which is slidably disposed on the cutter head body. When the loose soil scraper is working, it scrapes off the loose soil on the scraper. The solidified tuff cleaning subunit includes a solidified tuff cleaning plate, a resistance data acquisition device, and a data processing element. The solidified tuff cleaning plate slides and cleans the solidified tuff residue remaining on the scraper. The resistance data acquisition device collects the resistance data encountered by the loose soil scraper during sliding. The signal input terminal of the data processing element is electrically connected to the signal output terminal of the resistance data acquisition device. The data processing element controls the solidified tuff cleaning plate to clean the solidified tuff residue remaining on the scraper according to the output signal of the resistance data acquisition device. The loose soil cleaning subunit also includes a first hydraulic cylinder; The pushing end of the first hydraulic cylinder is fixedly connected to the soil scraper, and the extension and retraction direction of the first hydraulic cylinder is parallel to the scraping surface of the scraper. The first hydraulic cylinder provides power for the sliding of the soil scraper. The solidified tuff cleaning subunit also includes a second hydraulic cylinder, an air cylinder, and a fixing plate; The pushing end of the second hydraulic cylinder is fixedly connected to the fixed plate. The pushing end of the second hydraulic cylinder drives the fixed plate to move. The extension and retraction direction of the second hydraulic cylinder is parallel to the scraping surface of the scraper. The second hydraulic cylinder drives the fixed plate to move in a direction parallel to the scraping surface of the scraper. The cylinder is fixedly mounted on the fixed plate, and the pushing end of the cylinder is fixedly connected to the solidified tuff cleaning plate. The extension and retraction direction of the cylinder is perpendicular to the scraping surface of the scraper. The cylinder drives the solidified tuff cleaning plate to move in a direction perpendicular to the scraping surface of the scraper. The solidified tuff cleaning plate cleans the solidified tuff rock debris remaining on the scraper under the action of the cylinder. The solidified tuff cleaning subunit also includes a stress relief plate; The unloading plate is fixedly installed on the fixed plate; When the solidified tuff cleaning plate cleans the scraper, the scraper is located between the solidified tuff cleaning plate and the unloading plate, and the unloading plate and the scraper are in close contact with each other.

2. The slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 1, characterized in that, The solidified tuff cleaning subunit also includes several protrusions, all of which are fixedly installed on the solidified tuff cleaning plate. The protrusions are used to break up the solidified tuff residue remaining on the scraper plate.

3. The slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 1, characterized in that, The conveying subunit is a ring conveyor; The circular conveyor includes a conveyor body, a chain, and sprockets. At least two sprockets are provided on the conveyor body, and the power end of the conveyor body provides rotational power to the sprockets. A chain is provided between the sprockets, and the sprockets mesh with the chain; The scrapers are arranged in an array along the outer contour of the chain, and the scrapers are driven to move by the chain when the chain moves; A slag inlet is provided through the side wall of the slag discharge channel. During the movement of the chain, the rock slag scraped by the scraper moves through the slag inlet into the lifting unit of the slag discharge channel.

4. The slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 3, characterized in that, The conveying subunit also includes a guide pipe; The guide pipe is fixedly installed at the slag inlet of the slag discharge channel. One end of the guide pipe is connected to the internal space of the slag discharge channel, and the other end of the guide pipe extends out of the outer wall of the slag discharge channel. The bottom end face of the guide pipe is in contact with the working surface. The sprocket closest to the slag discharge channel among a plurality of sprockets is the first sprocket, and the first sprocket is located inside the guide pipe; When the chain drives the scraper to move, the scraper sends the rock debris on the working surface into the lifting unit through the guide pipe.

5. A slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 4, characterized in that, The conveying subunit also includes a ring-shaped guide rail; The annular guide rail includes a guide rail body and a guide groove; The guide rail body is located inside the chain, and the outer wall of the guide rail body has a guide groove; The scraper is slidably mounted on the chain, and the sliding direction of the scraper is perpendicular to the working surface; The ball bearings are fixedly mounted on the scraper and are rolled within the guide groove.

6. A slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 5, characterized in that, The annular guide rail is divided into a first guide rail section, a second guide rail section, and a third guide rail section; The third guide rail section is located between the first guide rail section and the second guide rail section. The first guide rail section is closer to the slag discharge channel than the second guide rail section. The first guide rail section is fixedly installed on the conveyor body, and the second guide rail section is slidably disposed on the conveyor body. The sliding direction of the second guide rail section is perpendicular to the working surface. The guide surface of the first guide rail segment is the first guide surface, the guide surface of the second guide rail segment is the second guide surface, the first guide surface and the second guide surface are parallel, the first guide surface is parallel to the moving direction of the chain, and the first guide surface is parallel to the working surface; The third guide rail section includes a first slide rail and a second slide rail. The guide groove of the second slide rail extends to both ends and passes through the slide rail body of the second slide rail. The second slide rail is hinged to the second guide rail section. The rotation axis of the second slide rail is perpendicular to the sliding direction of the scraper. The guide groove of the second slide rail is connected to the guide groove of the second guide rail section. The ball rolls from the guide groove of the second guide rail section into the guide groove of the second slide rail. The guide groove of the first slide rail extends through both ends and passes through the slide rail body of the first slide rail. The first slide rail is hinged to the first guide rail segment. The rotation axis of the first slide rail is parallel to the rotation axis of the second guide rail. The guide groove of the first slide rail is connected to the guide groove of the first guide rail segment. The guide groove of the first slide rail is slidably connected to the slide rail body of the second slide rail. The sliding direction of the slide rail body of the second slide rail is the same as the guiding direction of the guide groove of the first slide rail. The ball rolls from the guide groove of the first slide rail into the guide groove of the first guide rail segment.

7. A slag removal system for a vertical shaft tunneling machine under tuff geological conditions according to claim 6, characterized in that, The third guide rail segment includes two first slide rails and two second slide rails, and each of the first guide rail segment and the second guide rail segment includes two connection points. The movement trajectory of the scraper when it moves along the first guide rail section is the first movement trajectory, and the movement trajectory of the scraper when it moves along the second guide rail section is the second movement trajectory. The first guide rail segment and the two first slide rails have two hinged positions, namely the first connection point and the third connection point. Both the first connection point and the third connection point are located outside the guide pipe, and the third connection point is located after the first connection point along the first movement trajectory. The two hinged positions of the second guide rail section and the two second slide rails are the second connection point and the fourth connection point, respectively. The fourth connection point is located before the second connection point along the second moving trajectory. The sprocket closest to the outer edge of the cutter head body among the several sprockets is the second sprocket. The scraper scrapes the rock slag from the position of the second sprocket into the slag discharge channel in the third direction. When the scraper moves along the second guide rail section, the position where the scraper starts to move in the third direction is the first starting point. The fourth connection point is located before the first starting point along the second direction. The first slide rail at the first connection point is slidably connected to the second slide rail at the second connection point, and the first slide rail at the third connection point is slidably connected to the second slide rail at the fourth connection point.

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