Cutting heading machine and construction method thereof

Abstract

The invention relates to the technical field of tunnel excavation, and discloses a cutting heading machine and a construction method thereof.The cutting heading machine comprises a drilling assembly, a hinge assembly and a supporting assembly, the drilling assembly is used for scraping a tunnel working face, the supporting assembly is used for supporting a tunnel rock face, and the hinge assembly is connected between the drilling assembly and the supporting assembly and used for driving the drilling assembly to steer; the hinging assembly comprises a steering shell at the front end, a fixing shell at the rear end, a steering ring and at least one driving piece, the steering shell is connected to the rear end of the tunneling assembly, the fixing shell is fixedly connected to the supporting assembly, and the steering ring is hinged to the steering shell and the fixing shell through the driving piece so as to drive the steering shell to deflect relative to the fixing shell; the steering device has the advantages that the structure is simple, and the steering ring meets the effects of driving rotation and bearing rear-end driving at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel excavation, and in particular to a cutting tunneling machine and a construction method thereof. Background Art

[0002] A tunnel construction machine is a large-scale mechanical equipment used in tunnel construction. It can carry out full-section excavation underground and complete rock breaking, slag discharge, and furnace discharge at the same time. The machine excavates according to the tunnel design. When the tunnel design is a curve, the excavated hole line deviates from the design line during excavation, or the machine needs to avoid hard rock layers or other difficult-to-excavate geological structures, the machine needs to turn. By turning, the machine can change direction without having to reverse, thereby improving construction efficiency.

[0003] The Chinese invention patent with authorization announcement number CN115387804A discloses a shield machine with a double-articulated structure, including a front shield, a middle shield, a tail shield, a first articulated cylinder and a second articulated cylinder. The front shield, the middle shield and the tail shield are arranged in sequence, one end of the first articulated cylinder is connected to the front shield, and the other end is connected to the front end of the middle shield, one end of the second articulated cylinder is connected to the rear end of the middle shield, and the other end is connected to the tail shield. A thrust cylinder is provided on the tail shield, and multiple thrust cylinders are evenly arranged in the circumferential direction of the tail shield, and multiple thrust cylinders and the second articulated cylinder are staggered in the radial direction. The second articulated cylinder is arranged on the inner side of the thrust cylinder. When the shield machine turns, the first articulated cylinder provides a turning angle between the front shield and the middle shield, and the second articulated cylinder provides a turning angle between the middle shield and the tail shield.

[0004] However, in the prior art, a hinge is welded at the front end of the tail shield, and the rear end of the middle shield is sleeved on the hinge of the tail shield. When the shield machine moves forward, the connection between the middle shield and the hinge ring mainly transmits the driving force of the tail shield to the middle shield. When the middle shield rotates relative to the tail shield, the rear end of the middle shield also rotates relative to the hinge of the tail shield. Long-term work will cause the connection between the middle shield and the hinge to be damaged and difficult to repair. Summary of the invention

[0005] The present invention is intended to provide a cutting tunneling machine to achieve the purpose of facilitating the maintenance and replacement of the tunneling machine's hinged components.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a cutting tunnel boring machine and a construction method thereof, comprising a drilling assembly, an articulated assembly and a supporting assembly, wherein the drilling assembly is used for scraping the tunnel working surface, the supporting assembly is used for supporting the tunnel rock surface, the articulated assembly is connected between the drilling assembly and the supporting assembly, and is used for driving the drilling assembly to turn; the articulated assembly comprises a steering shell at the front end, a fixed shell at the rear end, a steering ring and at least one driving member, the steering shell is connected to the rear end of the tunnel boring assembly, the fixed shell is fixedly connected to the supporting assembly, and the steering ring is respectively articulated with the steering shell and the fixed shell through the driving member to drive the steering shell to deflect relative to the fixed shell.

[0007] The beneficial effects of this solution are as follows: by setting a steering ring, the steering ring is hinged to the steering shell and the fixed shell respectively, and the fixed shell is fixedly connected to the support structure at the rear end. When the operation of the front drilling assembly of the tunnel boring machine is completed and the operation of the next working face needs to be carried out, the support assembly at the rear end needs to provide driving force to push the front drilling assembly forward, and the support assembly transfers the force to the fixed shell. The transmission of the driving force between the fixed shell and the steering ring can be achieved through the hinge point between the two. The steering ring transfers the force to the steering shell through the hinge point with the steering shell. At the same time, the steering shell is connected to the drilling assembly at the front end, and the steering shell transfers the force to the drilling assembly. The articulation between the steering ring and the fixed shell and the steering shell is achieved through holes and pins. Under long-term rotation, the pins will have a certain degree of wear, which is convenient for replacement and maintenance, and has the effect of facilitating the maintenance and replacement of the hinged parts between the steering ring and the fixed shell and the steering shell.

[0008] Compared with the prior art, the middle shield and the tail shield in the prior art are connected by a propulsion cylinder, the propulsion cylinder provides driving force between the tail shield and the middle shield, and the propulsion cylinder is set in multiple numbers. The propulsion cylinder only plays a driving role and has no effect on the steering between the two. Moreover, when the two are deflected, the multiple propulsion cylinders will also make different degrees of contraction and stretching due to different positions. The present solution only involves a simple and integrated steering ring, which can simultaneously realize force transmission and drive steering.

[0009] Furthermore, a first hinge hole and a second hinge hole are symmetrically provided on two perpendicular opposite sides of the steering ring, the first hinge hole is used to hinge the steering ring to the fixed shell, and the second hinge hole is used to hinge the steering ring to the steering shell; two perpendicular opposite sides of the steering ring are respectively hinged to the steering shell and the fixed shell, and the driving member is configured as an articulated cylinder, the articulated cylinder includes a first articulated cylinder and a second articulated cylinder, the first articulated cylinder and the second articulated cylinder are respectively arranged on two perpendicular opposite sides of the steering ring, the telescopic rod of the first articulated cylinder is connected to the fixed shell, and the telescopic rod of the second articulated cylinder is connected to the steering shell, wherein the axis of the first articulated hole is perpendicular to the axis of the first articulated cylinder; the first articulated cylinder is used to drive the steering to deflect around the axis of the first articulated hole, and the second articulated cylinder is used to drive the steering to deflect around the axis of the second articulated hole.

[0010] The beneficial effects of this scheme are as follows: the steering ring is hinged to the fixed shell and the steering shell at the first hinge hole and the second hinge hole respectively by using a pin shaft, and by setting the axis of the first hinge hole and the axis of the first hinge cylinder to be perpendicular, the axis of the second hinge hole and the axis of the second hinge cylinder must also be perpendicular, so the symmetrically arranged first hinge cylinder drives the steering ring to rotate relative to the fixed shell with the axis between the first hinge holes on both sides of the steering ring as the center, and at the same time, since the steering ring and the steering shell are hinged through the second hinge hole, the steering ring drives the steering shell to deflect together; the second hinge cylinder drives the steering ring to deflect relative to the steering shell with the axis between the second hinge holes on both sides of the steering ring as the center, and since the steering ring and the fixed shell are hinged through the first hinge hole, the steering ring should drive the fixed shell to deflect together, but because the fixed shell is fixed to the support assembly at the rear end, the fixed shell does not deflect, and the steering shell has a higher degree of freedom than the fixed shell, so the steering ring rotates relative to the fixed shell, and at the same time, the steering ring drives the steering shell to deflect relative to the fixed shell, which can achieve the purpose of driving the steering shell to deflect in four directions perpendicular to each other on the axis of the steering ring tunnel boring machine.

[0011] Furthermore, the steering ring is hinged to the end of the fixed shell close to the steering shell, the steering ring is hinged to the end of the steering shell close to the fixed shell, adapter plates are symmetrically arranged on both sides of the fixed shell, the adapter plates protrude from the end surface of the fixed shell, the steering ring is hinged to the fixed shell through the adapter plate, and an adapter groove with a shape matching the adapter plate is opened at the end of the steering shell, and the adapter groove allows the adapter plate to deflect relative to the steering shell.

[0012] The beneficial effects of this solution are as follows: in order to adapt to tunnel excavation operations, the steering shell and the fixed shell are both designed to be cylindrical. Therefore, when relative deflection occurs between the two, it is not convenient to set the rotating ring inside the two. The rotating ring can only be installed on the end surface or near the end surface, and the two sets of hinge holes of the rotating ring, namely the first hinge hole and the second hinge hole, are preferably arranged on the same plane. Therefore, in order to achieve simultaneous hinge connection of two cylindrical parts on the same plane, the steering shell and the fixed shell must have a mutually embedded structure for relative deflection between the two. Therefore, an adapter plate is set that can be embedded in the adapter groove for relative deflection. At the same time, on the fixed shell, the part between the two adapter plates also belongs to the in-groove structure, and on the steering shell, the structure between the two adapter grooves also belongs to the outward convex plate structure. Therefore, the purpose of mutual embedding between the steering shell and the fixed shell can be achieved, and then the relative deflection between the steering shell and the fixed shell in the up, down, left and right directions can be achieved.

[0013] Furthermore, there is a rotation gap between the ends of the steering housing and the fixed housing that are close to each other.

[0014] The beneficial effect of this solution is that by setting the rotation gap, when the steering housing deflects in four directions, up, down, left, and right, on the end surface of the fixed housing, the end surface of the steering housing and the end surface of the fixed housing will not interfere with each other, thereby ensuring the stability of the deflection of the steering housing.

[0015] Furthermore, first articulated seats for articulating the articulated cylinder are fixed on both the upper and lower sides of the steering ring, second articulated seats for articulating the telescopic rod of the articulated cylinder are fixed on the inner ring of the steering shell and the fixed shell, and the cylinder ends of the first articulated cylinder and the second articulated cylinder are both articulated on the first articulated seat.

[0016] The beneficial effects of this solution are as follows: the cylinder body of the first articulated cylinder is hinged on the first articulated seat provided on the steering ring, and the end of the telescopic rod is connected to the second articulated seat provided on the fixed shell. When the telescopic rod of the first articulated cylinder is extended or retracted, the position of the steering ring is driven to rotate. At this time, the cylinder body of the first articulated cylinder and the first articulated seat rotate relative to each other, which will not affect the connection relationship between the two. The cylinder body of the second articulated cylinder is hinged on the first articulated seat, and the end of the telescopic rod is hinged on the second articulated seat provided on the steering shell. After several rotations, the positions of the steering ring and the steering shell will change. Therefore, in this case, the stability of the connection of the articulated cylinder can be guaranteed.

[0017] Furthermore, the drilling assembly includes a support plate, a guide tube is provided at the axis of the support plate, the guide tube is slidably connected to the first fixed plate and the second fixed plate, the first fixed plate is provided with a plurality of coring drill barrels, the plurality of coring rotary barrels are coaxial with the first fixed plate and are arranged at equal intervals, and the plurality of coring drill barrels are used to process the working surface into a plurality of adjacent annular surfaces; the second fixed plate is fixed with a plurality of guide rods, the ends of the plurality of guide rods are connected with cutter heads, the cutter heads are used to scrape the annular surfaces processed by the coring drill barrels on the tunnel working surface, the cutter heads are placed in the annular space formed between the two adjacent coring drill barrels, the second fixed plate is located between the first fixed plate and the support plate, the guide rod is penetrated and slidably connected to the first fixed plate, and the support plate is respectively provided with a first thrust cylinder and a second thrust cylinder connected to the first fixed plate and the second fixed plate.

[0018] The beneficial effect of this scheme is as follows: by arranging several coring drill barrels coaxially, and placing the public security cutter head in the annular space between two adjacent ones of the several coring drill barrels, the first fixed plate is driven to slide on the guide tube under the drive of the first thrust cylinder, and the first fixed plate drives the several coring drill barrels to contact the working surface in the tunnel and presents several adjacent and non-connected annular surfaces to it for operation, and then the first thrust cylinder is retracted and drives the first fixed plate to retract the several coring drill barrels at the same time, and then the second fixed plate drives several cutter heads to contact the working surface under the drive of the second thrust cylinder, at this time, the cutter head contacts several annular surfaces on the working surface that have been processed by the coring drill barrel, and at this time, the cutter head scrapes several groups of non-connected annular surfaces on the working surface, and the several non-connected annular surfaces can effectively reduce the compressive strength of the rock on the working surface, and can achieve the purpose of controlling the staggered sliding between the coring drill barrel and the cutter head and operating separately, so that the working surface can be scraped quickly, the working time can be reduced, and the work efficiency can be improved.

[0019] Furthermore, a slewing bearing is arranged between the support plate and the steering housing, and the slewing bearing is used to drive the support plate to rotate. A plurality of mounting seats are provided at the end of the coring drill tube, and the mounting seats are detachably connected with plate teeth.

[0020] The beneficial effects of this solution are as follows: the slewing bearing provides scraping power for the drilling assembly, and the plate teeth are installed on the coring drill barrel by screws, which can achieve the purpose of detachable connection of the plate teeth. Due to long-term operation and different working environments, the plate teeth need to be replaced, so they can be easily disassembled. The slewing bearing drives the support plate to rotate, and the support plate drives the first fixed plate and the second fixed plate to rotate together through the thrust cylinder, which can achieve the purpose of rotating the coring assembly and rotating scraping of the cutter head.

[0021] Furthermore, a tool holder is fixed on the top of the guide rod, and the tool holder includes a base plate and vertical plates on both sides of the base plate. The base plate is rectangular and the geometric center of the base plate coincides with the axis of the guide rod. The vertical plates are symmetrically arranged on both sides of the top of the base plate. A pin is connected between the vertical plates, and the tool body is rotatably connected to the pin. Several base plates are arranged at irregular angles at the top of the guide rod.

[0022] The beneficial effects of this solution are as follows: the bottom plate of the tool holder is set to a rectangle to facilitate the coaxial setting with the guide rod, and the bottom plate can be deflected at a certain angle with the geometric center of the bottom plate as the center and fixed to the top of the guide rod, ensuring that the tool holder is set at an irregular angle at the top of the guide rod, thereby achieving the purpose of irregular setting of the angle of the cutter head. If the cutter heads are arranged at the same radial angle along the second fixed plate, there will be some dead angles on the annular surface that are difficult to reach during the operation of the cutter heads. By placing several cutter heads at irregular angles at the end of the guide rod, the purpose of scraping without dead angles by the cutter head in the annular plane can be achieved.

[0023] Furthermore, a rotating shaft is rotatably connected at the axis of the support plate, a scraping drill bit is provided at the end of the rotating shaft away from the support plate, the guide tube is outermostly fitted on the rotating shaft, a bearing is connected between the guide tube and the rotating shaft, the rotating shaft passes through the support plate, a motor is installed on the steering shell, the motor is connected to the rotating shaft, the motor is used to drive the rotating shaft to rotate, the support assembly includes a supporting main frame and a supporting frame, the supporting frame is hinged to the supporting main frame, the supporting frame is used to support the rock surface in the tunnel, the front end of the supporting main frame is fixedly connected to the rear end of the fixed shell, and an articulated frame and a supporting oil cylinder are provided between the supporting frame and the supporting main frame.

[0024] The beneficial effects of this solution are as follows: it is more laborious to excavate the center of the working face during tunnel excavation work, so in this solution, a scraping drill bit is used to operate separately on the center of the working face. The part scraped by the scraping drill bit is the circular area formed by the innermost coring drill barrel cutting the working face. Therefore, the rock surface in the center of the working face has lower pressure resistance, which can achieve the purpose of rapid scraping and reducing damage to the cutter head; the tunnel boring machine will swing and vibrate due to the force during the operation on the working face, so the support frame is propped up and pushed against the rock face of the tunnel by the support cylinder, which can effectively reduce the swing and vibration of the tunnel boring machine on the one hand, and at the same time, it can fix the tunnel boring machine so that it does not slide due to environmental changes when excavating inclined tunnels.

[0025] Another object of the present invention is to provide a construction method of a cutting tunneling machine, comprising the following steps:

[0026] S1: Positioning of drilling assembly: The support plate is driven to rotate parallel to the working surface through the hinge assembly, the rear end of the tunnel boring machine is driven forward to make the scraping drill bit contact the working surface, the motor drives the shaft to rotate and drives the scraping drill bit to rotate, and the scraping drill bit drills a certain distance first;

[0027] S2: The coring drill barrel cuts an annular section: The telescopic rod of the first propulsion oil cylinder extends, driving the first fixed plate to move toward the working surface. The first fixed plate drives the coring drill barrel to contact the working surface. After the coring drill barrel contacts the working surface, the slewing bearing rotates to drive the drilling assembly to rotate as a whole. While rotating, the first propulsion oil cylinder continues to extend. After the working surface cuts an annular section, the slewing bearing stops rotating. The telescopic rod of the first propulsion oil cylinder contracts, driving the coring drill barrel to break contact with the working surface.

[0028] S3: Scraping the annular section and transporting the debris: The telescopic rod of the second propulsion cylinder extends and drives the second fixed plate to move toward the working surface. The second fixed plate drives the cutter head to move toward the working surface through the guide rod. After the cutter head contacts the working surface, the slewing bearing rotates and drives the drilling assembly to rotate as a whole. The cutter head scrapes the annular section. The debris generated during scraping falls from the annular space into the interior of the tunnel boring machine and is transported to the rear end of the tunnel boring machine through the conveyor belt inside the tunnel boring machine and transported out of the tunnel through external equipment.

[0029] S4: The first working surface is cut and the above steps are repeated in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a 3D schematic diagram of the overall structure of an embodiment of the present invention;

[0031] Figure 2 It is a side view of the overall structure of an embodiment of the present invention;

[0032] Figure 3It is a front view of the overall structure of the embodiment of the present invention in the cutting direction;

[0033] Figure 4 For the embodiment of the present invention Figure 1 Schematic diagram of the local structure of the coring drill tube installation plate teeth at A in the middle;

[0034] Figure 5 For the embodiment of the present invention Figure 2 A schematic diagram of the cross-sectional structure of the overall structure along the BB axis;

[0035] Figure 6 For the embodiment of the present invention Figure 5 Schematic diagram of the local structure of the drilling assembly at B in the middle;

[0036] Figure 7 It is a schematic diagram of the parts structure of the guide rod installation cutter head structure in the drilling assembly according to the embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the exploded structure of the hinge assembly according to an embodiment of the present invention;

[0038] Fig. 9 It is a schematic diagram of the local structure of the overall structural support assembly of an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] The reference numerals in the drawings of the specification include:

[0041] Drilling assembly 1, support plate 11, rotating shaft 111, scraping drill bit 1111, bearing 1112, guide tube 112, first propulsion cylinder 113, second propulsion cylinder 114, first fixed plate 12, coring drill barrel 121, mounting seat 1211, plate teeth 1212, second fixed plate 13, guide rod 131, tool holder 1311, tool head 1312, slewing bearing 14, hinge assembly 2, steering shell 21, adapter groove 211, motor 212, steering ring 22, first articulated cylinder 221, second articulated cylinder 222, first articulated hole 223, second articulated hole 224, first articulated seat 225, fixed shell 23, adapter plate 231, second articulated seat 24, support assembly 3, support main frame 31, support frame 32, support cylinder 33.

[0042] Example

[0043] The embodiment is basically as shown in the attached Figure 1-9 A cutting tunneling machine is shown, such as Figure 1-Figure 6As shown, it includes a drilling assembly 1, an articulated assembly 2 and a supporting assembly 3. A slewing bearing 14 is connected between the drilling assembly 1 and the articulated assembly 2. The function of the slewing bearing 14 and the connection method at both ends are as described in the worm gear slewing bearing mechanism disclosed in the Chinese utility model patent with the authorization announcement number CN201908946U. The slewing bearing structure includes an upper connecting body, a middle slewing bearing with external teeth and a worm drive, and a lower connecting body. The inner ring of the slewing bearing is fixedly connected to the upper connecting body, and the outer ring of the slewing bearing with external teeth is fixedly connected to the lower The lower connecting body is fixedly connected, the worm drive is fixedly connected to the upper connecting body, the worm is meshed with the external teeth, driving the outer ring of the slewing bearing to rotate, driving the outer ring of the slewing bearing to rotate relative to the inner ring, that is, the lower connecting body and the upper connecting body rotate relatively, thereby realizing the rotational movement of the lower connecting body relative to the upper connecting body at any angle. The articulated assembly 2 in this scheme is connected to the upper connecting body of the slewing bearing 14, and the drilling assembly 1 is connected to the lower connecting body of the slewing bearing 14, so that the boring machine drives the drilling assembly 1.

[0044] The drilling assembly 1 includes a support plate 11, which is fixedly connected to the lower connecting body of the slewing bearing 14, and its fixing method is preferably bolt connection. The lower connecting body of the slewing bearing 14 rotates relative to the upper connecting body and drives the support plate 11 to rotate, and the support plate 11 drives the entire drilling assembly 1 to rotate. A rotating shaft 111 is rotatably connected to the support plate 11, and a motor 212 is installed inside the tunneling machine. The motor 212 is connected to the rotating shaft 111. A guide tube 112 is arranged outside the rotating shaft 111, and the guide tube 112 is fixed to the support plate 11. A bearing 1112 is arranged between the guide tube 112 and the rotating shaft 111, and the rotating shaft 111 is away from the support plate 1 1 is connected to a scraping drill bit 1111, the support plate 11 is slidably connected to a first fixed plate 12 and a second fixed plate 13 through a guide tube 112, the first fixed plate 12 and the second fixed plate 13 are both coaxially arranged with the rotating shaft 111, a plurality of coring drill barrels 121 are fixedly arranged on the first fixed plate 12, the plurality of coring drill barrels 121 are coaxially arranged with the first fixed plate 12, the plurality of coring drill barrels 121 are equidistantly arranged on the fixed plate, the ends of the plurality of coring drill barrels 121 are provided with mounting seats 1211, the mounting seats 1211 are threadedly connected with plate teeth 1212, and an annular space is formed between any two adjacent coring drill barrels 121.

[0045] like Figure 3 , Figure 5-6 , Fig. 9As shown, a plurality of guide rods 131 are provided on the second fixed plate 13, and the plurality of guide rods 131 are arranged in a plurality of circles. The plurality of circles formed by the guide rods 131 are coaxial with the second fixed plate 13, and the circular arrangement formed by the plurality of guide rods 131 corresponds to the annular space formed by the plurality of coring drill tubes 121. The guide rods 131 pass through the first fixed plate 12 and slide relative to the first fixed plate 12. The first propulsion cylinder 113 and the second propulsion cylinder 114 are installed on the support plate 11. The ends of the telescopic rods of the first propulsion cylinder 113 and the second propulsion cylinder 114 are connected to the first fixed plate 12 and the second fixed plate 13 respectively. The second fixed plate 13 is provided with a hole for the first propulsion cylinder 113 to slide, and the second fixed plate 13 is located between the first fixed plate 12 and the support plate 11.

[0046] The support assembly 3 includes a support main frame 31 and a support frame 32, and a support cylinder 33 is hinged between the support main frame 31 and the support frame 32. The support main frame 31 is hollow inside and is provided with a personnel inspection channel and a conveyor belt for transporting cutting debris. The inspection channel leads to the cutting assembly. The maintenance personnel can directly reach the drilling assembly 1 from the support main frame 31 to replace and repair the scraping drill bit 1111. After the debris scraped from the working surface by the drilling assembly 1 enters the interior of the tunneling machine, the debris is discharged from the end of the support main frame 31 through the conveyor belt. The number of support cylinders 33 can be single or multiple. The support main frame 31 and An articulated frame can also be set between the support frames 32, which acts as a buffer between the two. When an articulated frame is set between the support main frame 31 and the support frame 32, the telescopic rod of the support cylinder 33 needs to be hinged to the articulated frame, and the lifting and lowering of the articulated frame can be actively controlled. When the support frame 32 is raised and opened, the support frame 32 is against the inside of the tunnel. When the tunnel boring machine is in a tilted state, the support assembly 3 can fix the tunnel boring machine in the tunnel to prevent the tunnel boring machine from slipping. On the other hand, when the drilling assembly 1 cuts the tunnel working surface, vibration will be generated. Since the support frame 32 is against the inside of the tunnel, the vibration of the tunnel boring machine can be effectively reduced.

[0047] like Figure 7 As shown, the end of the guide rod 131 away from the second fixed plate 13 is connected to a tool holder 1311, and the tool holder 1311 includes a rectangular bottom plate and vertical plates fixed on both sides of the bottom plate, a pin is provided between the vertical plates on both sides, and a cutter head 1312 is rotatably connected to the pin. The cutter head 1312 adopts various types, and the geometric center of the bottom plate coincides with the axis of the guide rod 131. The bottom plates of several tool holders 1311 are deflected at different angles at the top of the guide rod 131 with the geometric center of the bottom plate.

[0048] like Figure 2 , Figure 5 , Figure 8As shown, the articulated assembly 2 includes a steering housing 21 connected to the slewing bearing 14, the steering housing 21 is fixedly connected to the upper connecting body of the slewing bearing 14, and the connection method is preferably bolt connection, which mainly plays a fixing role in fixing the entire upper connecting body of the slewing bearing 14, and the motor 212 is installed on the side of the steering housing 21 close to the support plate 11 by using a mounting frame, the articulated assembly 2 also includes a fixed housing 23 fixed to the rear end support main frame 31, and a steering ring 22 hinged to the steering housing 21 and the fixed housing 23, and the end of the fixed housing 23 close to the steering housing 21 is provided with an adapter plate 231 protruding from its own end surface, and the end of the steering housing 21 close to the fixed housing 23 is provided with an adapter groove 211 for the deflection of the adapter plate 231, and at the same time, there is a rotation gap between the ends of the steering housing 21 and the fixed housing 23 close to each other, and the steering ring 22 is provided with a first A hinge hole 223 and a second hinge hole 224, the first hinge hole 223 and the second hinge hole 224 are in the same plane, the first hinge hole 223 and the second hinge hole 224 are both set to two and are respectively set on both sides of the steering ring 22 that are radially symmetrical, the connecting line between the first hinge holes 223 and the connecting line between the second hinge holes 224 are perpendicular to each other, the first hinge hole 223 is hinged to the adapter plate 231 of the fixed shell 23 through a pin shaft, the second hinge hole 224 is hinged to the steering shell 21 through a pin shaft, a first hinge cylinder 221 is provided on the end surface of the steering ring 22 close to the fixed shell 23, a second hinge cylinder 222 is provided on the end surface of the steering ring 22 close to the steering shell 21, the first hinge cylinder 221 is hinged between the steering ring 22 and the fixed shell 23, and the second hinge cylinder 222 is hinged between the steering ring 22 and the steering shell 21.

[0049] like Figure 8 As shown, on the upper and lower end surfaces of the steering shell 21, first articulated seats 225 are fixed on both radially symmetrical sides of the steering shell 21, and second articulated seats 24 are fixed inside the steering shell 21 and the fixed shell 23. The second articulated seats 24 are also located on both radially symmetrical sides of the cross-section inside the two shells. The cylinder body of the first articulated cylinder 221 is hinged to the first articulated seat 225 located on the lower end surface of the steering ring 22, the telescopic rod is hinged to the second articulated seat 24 located in the fixed shell 23, the cylinder body of the second articulated cylinder 222 is hinged to the first articulated seat 225 located on the upper end surface of the steering ring 22, and the telescopic rod is hinged to the second articulated seat 24 located in the steering shell 21.

[0050] A construction method of a cutting tunnel boring machine comprises the following steps:

[0051] S1: Positioning of drilling assembly: The support plate is driven to rotate parallel to the working surface through the hinge assembly, the rear end of the tunnel boring machine is driven forward to make the scraping drill bit contact the working surface, the motor drives the shaft to rotate and drives the scraping drill bit to rotate, and the scraping drill bit drills a certain distance first;

[0052] S2: The coring drill barrel cuts an annular section: The telescopic rod of the first propulsion oil cylinder extends, driving the first fixed plate to move toward the working surface. The first fixed plate drives the coring drill barrel to contact the working surface. After the coring drill barrel contacts the working surface, the slewing bearing rotates to drive the drilling assembly to rotate as a whole. While rotating, the first propulsion oil cylinder continues to extend. After the working surface cuts an annular section, the slewing bearing stops rotating. The telescopic rod of the first propulsion oil cylinder contracts, driving the coring drill barrel to break contact with the working surface.

[0053] S3: Scraping the annular section and transporting the debris: The telescopic rod of the second propulsion cylinder extends and drives the second fixed plate to move toward the working surface. The second fixed plate drives the cutter head to move toward the working surface through the guide rod. After the cutter head contacts the working surface, the slewing bearing rotates and drives the drilling assembly to rotate as a whole. The cutter head scrapes the annular section. The debris generated during scraping falls from the annular space into the interior of the tunnel boring machine and is transported to the rear end of the tunnel boring machine through the conveyor belt inside the tunnel boring machine and transported out of the tunnel through external equipment.

[0054] S4: The first working surface is cut and the above steps are repeated in sequence.

[0055] The above construction steps focus on describing the construction process of the drilling assembly. The specific implementation process of the tunnel boring machine as a whole is as follows: when the drilling assembly 1 needs to turn, the first articulated oil cylinder 221 telescopes to control the steering ring 22 to drive the steering shell 21 to deflect left and right relative to the fixed shell 23, or the second articulated oil cylinder 222 telescopes to control the steering ring 22 to drive the steering shell 21 to deflect up and down relative to the fixed shell 23; during the drilling process, the first thrust oil cylinder 113 extends to drive the first fixed plate 12 and the coring drill barrel 121 to fit against The slewing bearing 14 then rotates to drive the drilling assembly 1 to rotate as a whole. When the coring drill barrel 121 cuts the working face into several annular surfaces, the first thrust cylinder 113 contracts, and at the same time the second thrust cylinder 114 extends to push the cutter head 1312 against the working face. Then the slewing bearing 14 rotates to drive the drilling assembly 1 to rotate as a whole until the cutter head 1312 completes scraping the annular surface. During operation, the support cylinder 33 props up the support frame 32 and pushes it against the rock surface of the tunnel to reduce the vibration of the tunnel boring machine and prevent the tunnel boring machine from sliding.

[0056] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A cutting tunneling machine, characterized in that: It includes a drilling assembly, an articulated assembly and a supporting assembly, wherein the drilling assembly is used for scraping the tunnel working surface, the supporting assembly is used for supporting the tunnel rock surface, and the articulated assembly is connected between the drilling assembly and the supporting assembly and is used for driving the drilling assembly to turn; The articulated assembly includes a steering shell at the front end, a fixed shell at the rear end, a steering ring and at least one driving member. The steering shell is connected to the rear end of the excavation assembly, the fixed shell is fixedly connected to the support assembly, and the steering ring is hinged to the steering shell and the fixed shell respectively through the driving member to drive the steering shell to deflect relative to the fixed shell.

2. A cutting tunneling machine according to claim 1, characterized in that: A first hinge hole and a second hinge hole are symmetrically opened on two vertical opposite sides of the steering ring, the first hinge hole is used to hinge the steering ring to the fixed shell, and the second hinge hole is used to hinge the steering ring to the steering shell; Two opposite sides of the steering ring that are perpendicular to each other are respectively hinged to the steering housing and the fixed housing, the driving member is configured as an articulated oil cylinder, the articulated oil cylinder comprises a first articulated oil cylinder and a second articulated oil cylinder, the first articulated oil cylinder and the second articulated oil cylinder are respectively arranged on two opposite sides of the steering ring that are perpendicular to each other, the telescopic rod of the first articulated oil cylinder is connected to the fixed housing, the telescopic rod of the second articulated oil cylinder is connected to the steering housing, wherein the axis of the first articulated hole is perpendicular to the axis of the first articulated oil cylinder; The first articulation oil cylinder is used to drive the steering to deflect around the axis of the first articulation hole, and the second articulation oil cylinder is used to drive the steering to deflect around the axis of the second articulation hole.

3. A cutting tunneling machine according to claim 2, characterized in that: The steering ring is hinged to the end of the fixed shell close to the steering shell, the steering ring is hinged to the end of the steering shell close to the fixed shell, adapter plates are symmetrically arranged on both sides of the fixed shell, the adapter plates protrude from the end surface of the fixed shell, the steering ring is hinged to the fixed shell through the adapter plate, and an adapter groove with a shape matching the adapter plate is opened at the end of the steering shell, and the adapter groove allows the adapter plate to deflect relative to the steering shell.

4. A cutting tunneling machine according to claim 3, characterized in that: There is a rotation gap between the ends of the steering housing and the fixed housing that are close to each other.

5. A cutting tunneling machine according to claim 4, characterized in that: The first articulated seats for the articulated oil cylinder to be articulated are fixed on both the upper and lower sides of the steering ring, the second articulated seats for the articulated oil cylinder telescopic rod to be articulated are fixed on the steering shell and the inner ring of the fixed shell, and the cylinder ends of the first articulated oil cylinder and the second articulated oil cylinder are both articulated on the first articulated seat.

6. A cutting tunneling machine according to claim 5, characterized in that: The drilling assembly includes a support plate, a guide tube is provided at the axis of the support plate, the guide tube is slidably connected to the first fixed plate and the second fixed plate, the support plate is rotatably connected to a rotating shaft at the axis, a scraping drill bit is provided at the end of the rotating shaft away from the support plate, the guide tube is sleeved on the rotating shaft, a bearing is connected between the guide tube and the rotating shaft, the rotating shaft passes through the support plate, a slewing bearing is provided between the support plate and the steering housing, the slewing bearing is used to drive the support plate to rotate, a motor is installed on the steering housing, the motor is connected to the rotating shaft, and the motor is used to drive the rotating shaft to rotate.

7. A cutting tunneling machine according to claim 6, characterized in that: The first fixed plate is provided with a plurality of coring drill barrels, and the plurality of coring rotary barrels are coaxial with the first fixed plate and arranged at equal intervals, and the plurality of coring drill barrels are used to process the working surface into a plurality of adjacent annular surfaces; the second fixed plate is fixed with a plurality of guide rods, and the ends of the plurality of guide rods are connected with cutter heads, and the cutter heads are used to scrape the annular surfaces processed by the coring drill barrels on the tunnel working surface, and the cutter heads are placed in the annular space formed between two adjacent coring drill barrels; the second fixed plate is located between the first fixed plate and the support plate, and the guide rods are penetrated and slidably connected to the first fixed plate, and the support plate is respectively provided with a first thrust cylinder and a second thrust cylinder connected to the first fixed plate and the second fixed plate, and a plurality of mounting seats are opened at the ends of the coring drill barrels, and the mounting seats are detachably connected with plate teeth.

8. A cutting tunneling machine according to claim 7, characterized in that: A tool holder is fixed on the top of the guide rod, and the tool holder includes a base plate and vertical plates on both sides of the base plate. The base plate is rectangular and the geometric center of the base plate coincides with the axis of the guide rod. The vertical plates are symmetrically arranged on both sides of the top of the base plate. A pin is connected between the vertical plates, and the tool body is rotatably connected to the pin. Several base plates are arranged at irregular angles at the top of the guide rod.

9. A cutting tunneling machine according to claim 8, characterized in that: The support assembly includes a support main frame and a support frame. The support frame is hinged to the support main frame. The support frame is used to support the rock surface in the tunnel. The front end of the support main frame is fixedly connected to the rear end of the fixed shell. An articulated frame and a support cylinder are arranged between the support frame and the support main frame.

10. The construction method of a cutting tunneling machine according to claim 7, characterized in that: The following steps are involved: S1: Positioning of drilling assembly: The support plate is driven to rotate parallel to the working surface through the hinge assembly, the rear end of the tunnel boring machine is driven forward to make the scraping drill bit contact the working surface, the motor drives the shaft to rotate and drives the scraping drill bit to rotate, and the scraping drill bit drills a certain distance first; S2: The coring drill barrel cuts an annular section: The telescopic rod of the first propulsion oil cylinder extends, driving the first fixed plate to move toward the working surface. The first fixed plate drives the coring drill barrel to contact the working surface. After the coring drill barrel contacts the working surface, the slewing bearing rotates to drive the drilling assembly to rotate as a whole. While rotating, the first propulsion oil cylinder continues to extend. After the working surface cuts an annular section, the slewing bearing stops rotating. The telescopic rod of the first propulsion oil cylinder contracts, driving the coring drill barrel to break contact with the working surface. S3: Scraping the annular section and transporting the debris: The telescopic rod of the second propulsion cylinder extends and drives the second fixed plate to move toward the working surface. The second fixed plate drives the cutter head to move toward the working surface through the guide rod. After the cutter head contacts the working surface, the slewing bearing rotates and drives the drilling assembly to rotate as a whole. The cutter head scrapes the annular section. The debris generated during scraping falls from the annular space into the interior of the tunnel boring machine and is transported to the rear end of the tunnel boring machine through the conveyor belt inside the tunnel boring machine. S4: The first working surface is cut and the above steps are repeated in sequence.

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