A cantilever end capable of rapid assembly for a tunnel boring machine and a method of using the same

Abstract

The present invention discloses a cantilever end that can be quickly assembled for a comprehensive excavator and a method for using the same, which belongs to the technical field of tunneling machines. The cantilever end that can be quickly assembled for a comprehensive excavator comprises a slewing seat rotatably arranged on the comprehensive excavator, and also comprises: a cantilever part, a first through hole that matches with the cantilever part and the slewing seat is provided, and a first pin shaft is installed in the first through hole; a connecting socket, a plurality of connecting sockets are provided on the cantilever part, a plug part is plugged into the connecting socket, and an electric wire is connected to the plug part; a lifting cylinder, one end of the lifting cylinder is rotatably connected to the cantilever part, and an end of the lifting cylinder away from the cantilever part is provided with a second through hole that matches with the slewing seat, and a second pin shaft is installed in the second through hole; the present invention facilitates the rapid separation, disassembly or assembly of the cantilever part and the slewing seat, is simple to operate, reduces the workload and labor intensity of the staff, shortens the maintenance period of the comprehensive excavator, and thus enables the comprehensive excavator to be quickly put into use, shortening the construction period.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel boring machines, and in particular to a cantilever end that can be quickly assembled for a tunnel boring machine and a use method thereof. Background Art

[0002] Tunnel construction primarily relies on blasting and shield tunneling. Blast tunneling is unsuitable for locations near existing lines and in urban underground pipeline corridors. Shield tunneling is also prohibitively expensive, and tunnels with variable cross-sections or small turning radii are not suitable for shield construction. Therefore, cantilever tunnel boring machines (TBMs) offer significant advantages in short- to medium-distance tunneling, construction with variable cross-sections, and equipment assembly and disassembly.

[0003] Existing tunnel boring machines often need to disassemble and maintain the cantilever end after use. Generally, the pin shaft between the hydraulic cylinder and the slewing seat is removed first, and then the pin shaft between the cantilever end and the slewing seat is removed, and then the pipe or line connection between the cantilever end and the tunnel boring machine body is removed; and after the maintenance is completed, the connection positions still need to be connected one by one, and the operation steps are relatively cumbersome, which increases the workload and labor intensity of the staff and the maintenance cycle of the tunnel boring machine, reduces the overall maintenance efficiency of the tunnel boring machine, and makes the tunnel boring machine unable to be put into construction use in time, thereby extending the construction cycle. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a cantilever end that can be quickly assembled for a comprehensive excavator and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cantilever end for a multi-purpose excavator that can be quickly assembled comprises a slewing seat rotatably arranged on the multi-purpose excavator, and further comprises:

[0007] A cantilever portion, wherein a first through hole matching the cantilever portion and the swivel seat is provided, and a first pin is installed in the first through hole;

[0008] Connecting sockets: the cantilever portion is provided with a plurality of connecting sockets, the connecting sockets are plugged with plug portions, and the plug portions are connected to wires;

[0009] A lifting cylinder, one end of which is rotatably connected to the cantilever portion, and an end of the lifting cylinder away from the cantilever portion is provided with a second through hole which matches the swivel seat, and a second pin is installed in the second through hole;

[0010] A cutting head, the cutting head being arranged at an end of the cantilever portion away from the cutting head, and a driving member for driving the cutting head to rotate being arranged in the cantilever portion;

[0011] Among them, the first pin shaft and the second pin shaft are provided with a limit component with the same structure, the rotating seat is provided with a displacement component for driving the displacement of the first pin shaft and the second pin shaft, the rotating seat is provided with a plug-in component for driving the plug part to be plugged in and out, and the displacement component is connected to the plug-in component.

[0012] Preferably, the displacement assembly includes support plates fixed on both sides of the swivel seat, a screw rotatably connected between the two support plates, two first sleeves threadedly connected to the screw, and a connecting plate fixedly connected to the first sleeve, and elastic telescopic tubes are provided between the connecting plate and the first pin shaft and between the connecting plate and the second pin shaft, and a driving motor for driving the screw to rotate is fixed on the support plate.

[0013] Preferably, the first pin shaft and the second pin shaft each include a shaft body fixedly connected to the elastic telescopic tube and an annular plate fixed on the shaft body, and the limiting assembly is arranged at an end of the shaft body away from the elastic telescopic tube.

[0014] Preferably, the limiting assembly includes a plurality of limiting plates evenly distributed on the shaft body in a circular shape, the limiting plates are slidably connected to the shaft body, a slider is fixed on the limiting plate, a sliding groove for sliding the slider is provided on the shaft body, a first elastic element is provided between the inner wall of the sliding groove and the slider, and a first inclined surface is provided on both sides of the limiting plate.

[0015] Preferably, the limiting assembly also includes a movable groove provided on the shaft body, a conical head slidably connected in the movable groove and movably resisting the limiting plate, a second elastic element is provided between the conical head and the inner wall of the movable groove, a first reel rotatably connected to the first sleeve is slidably provided on the screw, a first pull rope is wound around the first reel, and the end of the first pull rope away from the first reel passes through the shaft body and is connected to the conical head.

[0016] Preferably, the plug-in assembly includes a support fixed on the rotary seat, a reciprocating screw rotatably connected to the support, a second sleeve threadedly connected to the reciprocating screw, a fixed plate arranged on the second sleeve, and a plug-in piece arranged on the fixed plate corresponding to the plug part one by one, a worm gear is fixed on the reciprocating screw, and a worm meshing with the worm gear is provided on the screw.

[0017] Preferably, the plug-in component includes a connecting rod connected to the fixed plate and a connecting seat arranged at the end of the connecting rod, an insertion rod is fixed to the end of the connecting rod away from the fixed plate, a socket matching the insertion rod is provided on the plug part, a groove is provided on the connecting seat, a movable block is slidably connected in the groove, a third elastic element is provided between the movable block and the inner wall of the groove, a shift block is fixed on the movable block, a first inclined surface is provided on the top of the shift block, and a shift groove matching the shift block is provided at the bottom of the plug part.

[0018] Preferably, the plug-in assembly also includes a rotating rod rotatably connected to the support, a driven gear is fixed on the rotating rod, a driving gear meshing with the driven gear is provided on the reciprocating screw rod, a second reel rotatably connected to the second sleeve is slidably provided on the rotating rod, a second pull rope is wound around the second reel, and the end of the second pull rope away from the second reel passes through the plug-in piece and is connected to the shift block.

[0019] Preferably, guide bars are fixedly provided on the inner side walls of the first reel and the second reel, and guide grooves for the guide bars to slide are provided on the screw rod and the rotating rod.

[0020] The present invention also discloses a method for using a cantilever end that can be quickly assembled for a comprehensive excavator, comprising the following steps:

[0021] S1: When separating and disassembling the cantilever part from the slewing seat, first use the lifting device to lift the cantilever part to ensure the safety of disassembly, then control the drive motor to operate, the output shaft of the drive motor drives the screw to rotate clockwise, and the first sleeve moves along the axial direction of the screw. The first sleeve no longer squeezes the elastic telescopic tube and the elastic telescopic tube is restored;

[0022] S2: When the screw rotates, it drives the first drum to reel in the first pull rope, and the first pull rope pulls the conical head, causing the conical head to slide in the movable groove. The conical head no longer abuts against the end of the limit plate. The limit plate is pulled back to its original position by the compressed first elastic element, and the limit plate shrinks in the shaft body, so that the movement of the first pin shaft and the second pin shaft is no longer hindered;

[0023] S3: As the first sleeve continues to move, the first sleeve drives the first pin and the second pin to move through the connecting plate and the elastic telescopic tube, so that the first pin is no longer plugged into the cantilever portion and the swivel seat, and the second pin is no longer plugged into the lifting cylinder and the swivel seat;

[0024] S4: When the screw rotates, the worm engages with the worm gear on the reciprocating screw to transmit the power, and the second sleeve moves axially along the reciprocating screw. The second sleeve drives the plug-in member to move toward the plug portion of the cantilever portion, and the plug rod of the plug-in member is inserted into the socket of the plug portion. During this period, the shift block avoids contact with the plug portion until the shift block is aligned with the shift slot. The shift block enters the shift slot under the push of the third elastic element;

[0025] S5: The second sleeve then moves to the end of the reciprocating screw and then moves back. The second sleeve drives the plug part out of the connection socket through the pull block of the plug-in component. The plug part and the plug-in component still maintain the plug-in state of the plug rod and the socket, thereby disconnecting the line between the cantilever part and the multi-purpose excavator.

[0026] S6: When installing the cantilever portion and the slewing seat, the cantilever portion is hoisted by a hoisting device so that the first through hole of the cantilever portion is aligned with the first through hole of the slewing seat, and the second through hole of the lifting cylinder is aligned with the second through hole of the slewing seat;

[0027] S7: Then, the drive motor is controlled to operate, so that the drive motor drives the screw to rotate counterclockwise, and the first sleeve drives the first pin and the second pin to move through the connecting plate, so that the first pin is inserted into the first through hole and the second pin is inserted into the second through hole, and then the annular plate is brought into contact with the side wall of the cantilever portion or the side wall of the rotary seat. As the first sleeve continues to move, the elastic telescopic tube is compressed;

[0028] S8: When the screw rotates counterclockwise, the worm and the worm wheel on the reciprocating screw are meshed in the opposite direction, and the second sleeve moves from the end of the reciprocating screw to the end close to the cantilever part. The second sleeve drives the plug part connected to the plug-in component to move, so that the plug part moves toward the connecting socket of the cantilever part;

[0029] S9: When the reciprocating screw rotates in the opposite direction, the driving gear on the reciprocating screw engages with the driven gear on the rotating rod to transmit the electric power, so that the second drum on the rotating rod reels the second pull rope, and the second pull rope exerts a pulling force on the shifting block, so that the shifting block slides down along the connecting seat and moves out of the shifting slot. The plug-in element pushes the plug part into the connecting socket, and starts to move back after the second sleeve moves to the end of the reciprocating screw close to the cantilever part. At this time, the plug-in element that moves back will not drive the plug part to move out of the connecting socket.

[0030] S10: As the screw continues to rotate, the first drum releases the first pull rope, the first pull rope no longer pulls the conical head, and the second elastic element pushes the conical head to reset. After the limit plates at the ends of the first pin shaft and the second pin shaft pass through the first through hole or the second through hole, the conical head squeezes the limit plates, and the limit plates move out of the shaft body. The limit plates limit the lifting cylinder and the cantilever part from separating from the slewing seat, thereby realizing the docking installation of the cantilever part and the slewing seat.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The tunnel boring machine uses a quickly assembled boom end and its use method. The displacement assembly drives the limit assembly and the plug-in assembly to operate, making it easy to quickly separate, disassemble, or assemble the boom from the slewing seat. This simple operation reduces the workload and labor intensity of the staff, shortens the maintenance cycle of the tunnel boring machine, and thus enables the tunnel boring machine to be put into use quickly, shortening the construction period.

[0033] 2. The quickly assembled boom end and its use method for the tunnel boring machine employ an elastic telescopic tube disposed between the connecting plate and the shaft. This allows the elastic telescopic tube to be restored first when the first sleeve drives the shaft away from the boom portion, preventing the limit plate on the shaft from obstructing movement of the first sleeve on the reciprocating screw before it retracts into the shaft, thereby ensuring normal operation of the displacement assembly.

[0034] 3. The tunnel boring machine uses a cantilever end that can be quickly assembled and a method of using the same. When disassembling the cantilever part and the slewing seat, the shift block is placed in the shift groove. The return movement of the shift block can move the plug part out of the connecting socket. When installing the cantilever part and the slewing seat, the plug part is pushed by the insertion rod to be plugged into the connecting socket. At this time, the shift block moves out of the shift groove and moves downward in the connecting seat. The return movement of the shift block does not drive the plug part out of the connecting socket, thereby avoiding a rigid connection between the plug-in component and the plug part, which affects the subsequent swinging of the cantilever part relative to the slewing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0036] Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure of the middle part A;

[0037] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0038] Figure 4 The structure of the present invention is schematically shown Figure 3 ;

[0039] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of part B in the middle;

[0040] Figure 6 Schematic diagram of the external structure of the rotary seat of the present invention;

[0041] Figure 7 For the present invention Figure 6 Schematic diagram of the partially enlarged structure of the middle C part;

[0042] Figure 8 It is a structural schematic diagram of the rotary seat of the present invention;

[0043] Figure 9 It is a structural schematic diagram of the displacement assembly of the present invention;

[0044] Figure 10 is a schematic cross-sectional structural diagram of the first pin of the present invention;

[0045] Figure 11 It is a schematic cross-sectional structural diagram of the plug-in component of the present invention.

[0046] In the figure: 1, swivel seat; 101, first through hole; 1011, first pin; 102, second through hole; 1021, second pin; 2, cantilever; 3, lifting cylinder; 4, cutting head; 5, connecting socket; 6, plug; 601, socket; 602, toggle slot; 7, support plate; 701, screw; 7011, first reel; 7012, first pull rope; 7013, worm; 702, first sleeve; 703, connecting plate; 704, elastic telescopic tube; 705, driving motor; 8, shaft; 801, annular plate; 802, limit plate; 8021, slider; 8022, slider Slot; 8023, first elastic element; 9, movable slot; 901, conical head; 902, second elastic element; 10, support; 1001, reciprocating screw; 1002, second sleeve; 1003, fixed plate; 1004, worm gear; 11, plug-in piece; 111, connecting rod; 1111, plug rod; 112, connecting seat; 1121, groove; 1122, movable block; 1123, third elastic element; 113, shift block; 12, rotating rod; 121, driven gear; 122, driving gear; 123, second reel; 124, second pull rope; 13, guide bar; 131, guide slot. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0049] Example 1: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 8 A cantilever end for a multi-purpose excavator that can be quickly assembled comprises a slewing seat 1 rotatably arranged on the multi-purpose excavator, and further comprises:

[0050] The cantilever part 2 has a first through hole 101 formed thereon and matched with the swivel seat 1. A first pin 1011 is installed in the first through hole 101.

[0051] Connecting sockets 5: The cantilever portion 2 is provided with a plurality of connecting sockets 5, into which the connecting sockets 5 are inserted the plug portion 6, to which the plug portion 6 is connected the wire;

[0052] A lifting cylinder 3, one end of the lifting cylinder 3 is rotatably connected to the cantilever portion 2, and a second through hole 102 is formed on the slewing seat 1 at the end of the lifting cylinder 3 away from the cantilever portion 2, and a second pin 1021 is installed in the second through hole 102;

[0053] The cutting head 4 is provided at one end of the cantilever portion 2 away from the cutting head 4, and a driving member for driving the cutting head 4 to rotate is provided in the cantilever portion 2;

[0054] Among them, the first pin shaft 1011 and the second pin shaft 1021 are provided with a limit component with the same structure, the rotating seat 1 is provided with a displacement component for driving the displacement of the first pin shaft 1011 and the second pin shaft 1021, and the rotating seat 1 is provided with a plug-in component for driving the plug part 6 to be plugged in and out, and the displacement component is connected to the plug-in component.

[0055] Specifically, when the cantilever part 2 is separated and disassembled from the slewing seat 1, the cantilever part 2 is first hoisted by a hoist to ensure the safety of disassembly, and then the displacement component is controlled to operate, so that the displacement component drives the plug-in component and the limit component to move, so that the first pin shaft 1011 is quickly disengaged from the first through hole 101, and the second pin shaft 1021 is quickly disengaged from the second through hole 102, so as to facilitate the rapid separation, disassembly or assembly of the cantilever part 2 and the slewing seat 1. The operation is simple, which reduces the workload and labor intensity of the staff, shortens the maintenance cycle of the tunnel boring machine, and thus enables the tunnel boring machine to be put into use quickly, shortening the construction cycle.

[0056] Example 2: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 and Figure 10 , a cantilever end that can be quickly assembled for a comprehensive tunneling machine, based on Example 1, further, the displacement assembly includes support plates 7 fixedly arranged on both sides of the slewing seat 1, a screw 701 rotatably connected between the two support plates 7, two first sleeves 702 threadedly connected to the screw 701, and a connecting plate 703 fixedly connected to the first sleeve 702, elastic telescopic tubes 704 are arranged between the connecting plate 703 and the first pin shaft 1011 and between the connecting plate 703 and the second pin shaft 1021, and a driving motor 705 for driving the screw 701 to rotate is fixed on the support plate 7.

[0057] Furthermore, the first pin shaft 1011 and the second pin shaft 1021 both include a shaft body 8 fixedly connected to the elastic telescopic tube 704 and an annular plate 801 fixedly mounted on the shaft body 8 , and the limiting assembly is disposed at one end of the shaft body 8 away from the elastic telescopic tube 704 .

[0058] Furthermore, the limiting assembly includes a plurality of limiting plates 802 evenly distributed on the shaft body 8 in a circular shape. The limiting plates 802 are slidably connected to the shaft body 8. A slider 8021 is fixed on the limiting plate 802. A sliding groove 8022 for sliding the slider 8021 is provided on the shaft body 8. A first elastic element 8023 is provided between the inner wall of the sliding groove 8022 and the slider 8021. A first inclined surface is provided on both sides of the limiting plate 802.

[0059] Furthermore, the limiting assembly also includes a movable groove 9 opened on the shaft body 8, in which a conical head 901 is slidably connected to the movable groove 9 and is movably opposed to the limiting plate 802. A second elastic element 902 is arranged between the conical head 901 and the inner wall of the movable groove 9. A first reel 7011 rotatably connected to the first sleeve 702 is slidably arranged on the screw 701, and a first pull rope 7012 is wound around the first reel 7011. The end of the first pull rope 7012 away from the first reel 7011 passes through the shaft body 8 and is connected to the conical head 901.

[0060] Specifically, when the cantilever part 2 is separated and disassembled from the slewing seat 1, the driving motor 705 is controlled to operate, and the output shaft of the driving motor 705 drives the screw 701 to rotate clockwise, and the first sleeve 702 moves axially along the screw 701, and the first sleeve 702 no longer squeezes the elastic telescopic tube 704 and restores the elastic telescopic tube 704. When the screw 701 rotates, it drives the first reel 7011 to reel in the first pull rope 7012, and the first pull rope 7012 pulls the conical head 901, so that the conical head 901 slides in the movable groove 9, and the conical head 901 no longer abuts against the end of the limit plate 802, and the limit plate 802 is not in contact with the first end of the limit plate 802. The positioning plate 802 is pulled back to its original position by the compressed first elastic element 8023 (the first elastic element 8023 is configured as a spring), and the limiting plate 802 is retracted in the shaft body 8, so that the movement of the first pin 1011 and the second pin 1021 is no longer blocked. As the first sleeve 702 continues to move, the first sleeve 702 drives the first pin 1011 and the second pin 1021 to move through the connecting plate 703 and the elastic telescopic tube 704, so that the first pin 1011 is no longer plugged into the cantilever part 2 and the slewing seat 1, and the second pin 1021 is no longer plugged into the lifting cylinder 3 and the slewing seat 1;

[0061] When installing the cantilever part 2 and the slewing seat 1, the cantilever part 2 is hoisted by the hoisting device so that the first through hole 101 of the cantilever part 2 is aligned with the first through hole 101 of the slewing seat 1, and the second through hole 102 of the lifting cylinder 3 is aligned with the second through hole 102 of the slewing seat 1. Then, the driving motor 705 is controlled to operate so that the driving motor 705 drives the screw 701 to rotate counterclockwise, and the first sleeve 702 drives the first pin shaft 1011 and the second pin shaft 1021 to move through the connecting plate 703, so that the first pin shaft 1011 is inserted into the first through hole 101, and the second pin shaft 1021 is inserted into the second through hole 102. Then, the annular plate 801 is abutted against the side wall of the cantilever part 2 or the side wall of the slewing seat 1. As the first A sleeve 702 continues to move, and the elastic telescopic tube 704 is compressed; as the screw 701 continues to rotate, the first reel 7011 releases the first pull rope 7012, and the first pull rope 7012 no longer pulls the conical head 901, and the second elastic element 902 pushes the conical head 901 to reset (the second elastic element 902 is set as a spring). After the limit plate 802 at the end of the first pin shaft 1011 and the second pin shaft 1021 passes over the first through hole 101 or the second through hole 102, the conical head 901 squeezes the limit plate 802, and the limit plate 802 moves out of the shaft body 8. The limit plate 802 limits the lifting cylinder 3 and the cantilever part 2 from being separated from the slewing seat 1, thereby realizing the docking installation of the cantilever part 2 and the slewing seat 1.

[0062] Example 3: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 and Figure 11 A quickly assembled cantilever end for a tunnel boring machine, based on Example 2, further, a plug-in assembly includes a support 10 fixedly mounted on a rotary seat 1, a reciprocating screw 1001 rotatably connected to the support 10, a second sleeve 1002 threadedly connected to the reciprocating screw 1001, a fixed plate 1003 arranged on the second sleeve 1002, and a plug-in piece 11 arranged on the fixed plate 1003 and corresponding to the plug part 6, a worm gear 1004 is fixedly provided on the reciprocating screw 1001, and a worm 7013 meshing with the worm gear 1004 is provided on the screw 701.

[0063] Furthermore, the plug-in component 11 includes a connecting rod 111 connected to the fixed plate 1003 and a connecting seat 112 arranged at the end of the connecting rod 111, a plug rod 1111 is fixed to the end of the connecting rod 111 away from the fixed plate 1003, a socket 601 matching the plug rod 1111 is provided on the plug part 6, a groove 1121 is provided on the connecting seat 112, a movable block 1122 is slidably connected in the groove 1121, a third elastic element 1123 is provided between the movable block 1122 and the inner wall of the groove 1121, a shift block 113 is fixed on the movable block 1122, a first inclined surface is provided on the top of the shift block 113, and a shift groove 602 matching the shift block 113 is provided at the bottom of the plug part 6.

[0064] Furthermore, the plug-in assembly also includes a rotating rod 12 rotatably connected to the support 10, a driven gear 121 is fixed on the rotating rod 12, a driving gear 122 is provided on the reciprocating screw rod 1001 and is meshed with the driven gear 121, a second reel 123 rotatably connected to the second sleeve 1002 is slidably provided on the rotating rod 12, a second pull rope 124 is wound around the second reel 123, and the end of the second pull rope 124 away from the second reel 123 passes through the plug-in member 11 and is connected to the shift block 113.

[0065] Specifically, when the cantilever part 2 is separated and disassembled from the rotary seat 1, the output shaft of the driving motor 705 drives the screw 701 to rotate clockwise. When the screw 701 rotates, the worm 7013 engages with the worm wheel 1004 on the reciprocating screw 1001 for transmission, and the second sleeve 1002 moves axially along the reciprocating screw 1001. The second sleeve 1002 drives the plug 11 to move toward the plug part 6 of the cantilever part 2, and the plug rod 1111 of the plug 11 is plugged into the socket 601 of the plug part 6. During this period, the shift block 113 avoids the contact with the plug part 6. The first threaded rod 110 is moved to the left of the second sleeve 1002 and the second threaded rod 1003 is moved to the right of the second sleeve 1002. The first threaded rod 110 is moved to the right of the second sleeve 1002 and the second threaded rod 1003 is moved to the left of the second sleeve 1002. The first threaded rod 110 is moved to the right of the second sleeve 1002 and the second threaded rod 1003 is moved to the right ...

[0066] When installing the cantilever part 2 and the slewing seat 1, the cantilever part 2 is hoisted by the hoisting device so that the first through hole 101 of the cantilever part 2 is aligned with the first through hole 101 of the slewing seat 1, and the second through hole 102 of the lifting cylinder 3 is aligned with the second through hole 102 of the slewing seat 1. At the same time, the connecting socket 5 is aligned with the plug part 6 at the end of the plug-in part 11. Then the driving motor 705 is controlled to run so that the driving motor 705 drives the screw 701 to rotate counterclockwise. When the screw 701 rotates counterclockwise, the worm 7013 engages with the worm gear 1004 on the reciprocating screw rod 1001 in the opposite direction for transmission. The second sleeve 1002 moves from the end of the reciprocating screw rod 1001 to the end close to the cantilever part 2. The second sleeve 1002 drives the plug part 6 connected to the plug-in part 11 to move so that the plug part 6 moves toward the connecting socket of the cantilever part 2. 5 moves. When the reciprocating screw rod 1001 rotates in the opposite direction, the driving gear 122 on the reciprocating screw rod 1001 meshes with the driven gear 121 on the rotating rod 12, so that the second reel 123 on the rotating rod 12 reels the second pull rope 124. The second pull rope 124 applies tension to the shift block 113, so that the shift block 113 slides down along the connecting seat 112, and the shift block 113 moves out of the shift slot 602. The plug-in component 11 pushes the plug part 6 to be inserted into the connecting socket 5. After the second sleeve 1002 moves to the end of the reciprocating screw rod 1001 close to the cantilever part 2, it starts to move back. At this time, the plug-in component 11 that moves back will not drive the plug part 6 to move out of the connecting socket 5, thereby avoiding the rigid connection between the plug-in component 11 and the plug part 6, which affects the subsequent swinging of the cantilever part 2 relative to the rotary seat 1, thereby ensuring the normal construction work of the tunnel boring machine.

[0067] Example 4: Reference Figure 4 and Figure 5 A cantilever end for a tunnel boring machine that can be quickly assembled. Based on Example 3, further, the inner walls of the first drum 7011 and the second drum 123 are fixed with guide bars 13, and the screw 701 and the rotating rod 12 are provided with guide grooves 131 for the guide bars 13 to slide.

[0068] Specifically, the setting of the guide bar 13 enables the first reel 7011 to move axially along the screw 701 with the first sleeve 702 when the screw 701 rotates, and the second reel 123 to move axially along the rotating rod 12 with the second sleeve 1002 when the rotating rod 12 rotates.

[0069] The present invention also discloses a method for using a cantilever end that can be quickly assembled for a comprehensive excavator, comprising the following steps:

[0070] S1: When separating and disassembling the cantilever part 2 from the slewing seat 1, the cantilever part 2 is first hoisted by a hoist to ensure the safety of the disassembly. Then, the drive motor 705 is controlled to operate. The output shaft of the drive motor 705 drives the screw 701 to rotate clockwise. The first sleeve 702 moves along the axial direction of the screw 701. The first sleeve 702 no longer squeezes the elastic telescopic tube 704 and the elastic telescopic tube 704 recovers.

[0071] S2: When the screw 701 rotates, it drives the first reel 7011 to reel in the first pull rope 7012. The first pull rope 7012 pulls the conical head 901, causing the conical head 901 to slide in the movable groove 9. The conical head 901 no longer abuts against the end of the limit plate 802. The limit plate 802 is pulled back to its original position by the compressed first elastic element 8023. The limit plate 802 shrinks in the shaft body 8, so that the movement of the first pin 1011 and the second pin 1021 is no longer blocked.

[0072] S3: As the first sleeve 702 continues to move, the first sleeve 702 drives the first pin 1011 and the second pin 1021 to move through the connecting plate 703 and the elastic telescopic tube 704, so that the first pin 1011 is no longer plugged into the cantilever part 2 and the swivel seat 1, and the second pin 1021 is no longer plugged into the lifting cylinder 3 and the swivel seat 1;

[0073] S4: When the screw 701 rotates, the worm 7013 meshes with the worm wheel 1004 on the reciprocating screw 1001 for transmission, and the second sleeve 1002 moves axially along the reciprocating screw 1001. The second sleeve 1002 drives the plug 11 to move toward the plug portion 6 of the cantilever portion 2. The plug rod 1111 of the plug 11 is inserted into the socket 601 of the plug portion 6. During this period, the shift block 113 avoids contact with the plug portion 6 until the shift block 113 is aligned with the shift slot 602. The shift block 113 enters the shift slot 602 under the push of the third elastic element 1123;

[0074] S5: Then, the second sleeve 1002 moves to the end of the reciprocating screw 1001 and then moves back. The second sleeve 1002 drives the plug part 6 to move out of the connection socket 5 through the shift block 113 of the plug-in component 11. The plug part 6 and the plug-in component 11 still maintain the plug-in state of the plug rod 1111 and the socket 601, thereby disconnecting the line between the cantilever part 2 and the multi-purpose excavator.

[0075] S6: When installing the cantilever part 2 and the slewing seat 1, the cantilever part 2 is hoisted by a hoist so that the first through hole 101 of the cantilever part 2 is aligned with the first through hole 101 of the slewing seat 1, and the second through hole 102 of the lifting cylinder 3 is aligned with the second through hole 102 of the slewing seat 1;

[0076] S7: The drive motor 705 is then controlled to operate, causing the drive motor 705 to drive the screw 701 to rotate counterclockwise. The first sleeve 702 drives the first pin 1011 and the second pin 1021 to move through the connecting plate 703, causing the first pin 1011 to be inserted into the first through hole 101 and the second pin 1021 to be inserted into the second through hole 102. Subsequently, the annular plate 801 is brought into contact with the side wall of the cantilever portion 2 or the side wall of the rotary seat 1. As the first sleeve 702 continues to move, the elastic telescopic tube 704 is compressed.

[0077] S8: When the screw 701 rotates counterclockwise, the worm 7013 engages with the worm wheel 1004 on the reciprocating screw 1001 in the opposite direction, and the second sleeve 1002 moves from the end of the reciprocating screw 1001 to the end close to the cantilever part 2. The second sleeve 1002 drives the plug part 6 connected to the plug member 11 to move, so that the plug part 6 moves toward the connecting socket 5 of the cantilever part 2;

[0078] S9: When the reciprocating screw rod 1001 rotates in the opposite direction, the driving gear 122 on the reciprocating screw rod 1001 meshes with the driven gear 121 on the rotating rod 12, causing the second reel 123 on the rotating rod 12 to reel in the second pull rope 124. The second pull rope 124 applies tension to the shift block 113, causing the shift block 113 to slide down along the connecting seat 112. The shift block 113 moves out of the shift slot 602, and the plug-in element 11 pushes the plug portion 6 into the connecting socket 5. After the second sleeve 1002 moves to the end of the reciprocating screw rod 1001 close to the cantilever portion 2, it begins to move back. At this time, the plug-in element 11 that moves back will not drive the plug portion 6 to move out of the connecting socket 5.

[0079] S10: As the screw 701 continues to rotate, the first drum 7011 releases the first pull rope 7012, and the first pull rope 7012 no longer pulls the conical head 901. The second elastic element 902 pushes the conical head 901 to reset. After the limit plates 802 at the ends of the first pin shaft 1011 and the second pin shaft 1021 pass through the first through hole 101 or the second through hole 102, the conical head 901 squeezes the limit plates 802, and the limit plates 802 move out of the shaft body 8. The limit plates 802 limit the lifting cylinder 3 and the cantilever part 2 from being separated from the slewing seat 1, thereby realizing the docking installation of the cantilever part 2 and the slewing seat 1.

[0080] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A cantilever end for a tunnel boring machine that can be quickly assembled, comprising a slewing seat (1) rotatably arranged on the tunnel boring machine, characterized in that: Also includes: A cantilever portion (2), wherein a first through hole (101) that matches the cantilever portion (2) and the slewing seat (1) is provided, and a first pin (1011) is installed in the first through hole (101); Connecting sockets (5), a plurality of connecting sockets (5) are provided on the cantilever portion (2), a plug portion (6) is inserted into the connecting sockets (5), and an electric wire is connected to the plug portion (6); A lifting cylinder (3), one end of the lifting cylinder (3) being rotatably connected to the cantilever portion (2), an end of the lifting cylinder (3) away from the cantilever portion (2) being provided with a second through hole (102) that matches with the slewing seat (1), and a second pin (1021) being installed in the second through hole (102); A cutting head (4), the cutting head (4) being arranged at one end of the cantilever portion (2) away from the slewing seat (1), and a driving member for driving the cutting head (4) to rotate being arranged in the cantilever portion (2); The first pin shaft (1011) and the second pin shaft (1021) are provided with a limit assembly having the same structure, the rotary seat (1) is provided with a displacement assembly for driving the first pin shaft (1011) and the second pin shaft (1021) to move, the rotary seat (1) is provided with a plug-in assembly for driving the plug portion (6) to be plugged in and out, and the displacement assembly is connected to the plug-in assembly; The displacement assembly comprises support plates (7) fixedly mounted on both sides of the rotary seat (1), a screw (701) rotatably connected between the two support plates (7), two first sleeves (702) threadedly connected to the screw (701), and a connecting plate (703) fixedly connected to the first sleeve (702); elastic telescopic tubes (704) are provided between the connecting plate (703) and the first pin (1011) and between the connecting plate (703) and the second pin (1021); a driving motor (705) for driving the screw (701) to rotate is fixedly mounted on the support plate (7); and a worm (7013) meshing with the worm wheel (1004) is provided on the screw (701).

2. The quickly assembled boom end for a tunnel boring machine according to claim 1, characterized in that: The first pin shaft (1011) and the second pin shaft (1021) both comprise a shaft body (8) fixedly connected to the elastic telescopic tube (704) and an annular plate (801) fixedly mounted on the shaft body (8), and the limiting assembly is arranged at one end of the shaft body (8) away from the elastic telescopic tube (704).

3. The quickly assembled boom end for a tunnel boring machine according to claim 2, characterized in that: The limiting assembly comprises a plurality of limiting plates (802) uniformly distributed on the shaft body (8) in a circumferential manner, the limiting plates (802) being slidably connected to the shaft body (8), a slider (8021) being fixedly provided on the limiting plate (802), a sliding groove (8022) for the slider (8021) to slide is provided on the shaft body (8), a first elastic element (8023) is provided between the inner wall of the sliding groove (8022) and the slider (8021), and first inclined surfaces are provided on both sides of the limiting plate (802).

4. The quickly assembled boom end for a tunnel boring machine according to claim 3, characterized in that: The limiting assembly further comprises a movable groove (9) provided on the shaft (8), a conical head (901) movably opposed to the limiting plate (802) being slidably connected in the movable groove (9), a second elastic element (902) being provided between the conical head (901) and the inner wall of the movable groove (9), a first reel (7011) rotatably connected to the first sleeve (702) being slidably provided on the screw (701), a first pull rope (7012) being wound around the first reel (7011), and an end of the first pull rope (7012) away from the first reel (7011) passing through the shaft (8) and connected to the conical head (901).

5. The quickly assembled boom end for a tunnel boring machine according to claim 4, characterized in that: The plug-in assembly comprises a support (10) fixed on a rotary seat (1), a reciprocating screw (1001) rotatably connected to the support (10), a second sleeve (1002) threadedly connected to the reciprocating screw (1001), a fixed plate (1003) arranged on the second sleeve (1002), and a plug-in member (11) arranged on the fixed plate (1003) and corresponding to the plug portion (6), wherein a worm gear (1004) is fixed on the reciprocating screw (1001), and a worm gear (7013) meshing with the worm gear (1004) is provided on the screw (701).

6. The quickly assembled boom end for a tunnel boring machine according to claim 5, characterized in that: The plug-in component (11) comprises a connecting rod (111) connected to a fixed plate (1003) and a connecting seat (112) arranged at the end of the connecting rod (111); an inserting rod (1111) is fixedly provided at one end of the connecting rod (1111) away from the fixed plate (1003); a socket (601) matching with the inserting rod (1111) is provided on the plug portion (6); a groove (1121) is provided on the connecting seat (112); a movable block (1122) is slidably connected in the groove (1121); a third elastic element (1123) is provided between the movable block (1122) and the inner wall of the groove (1121); a shifting block (113) is fixedly provided on the movable block (1122); a first inclined surface is provided on the top of the shifting block (113); and a shifting groove (602) matching with the shifting block (113) is provided on the bottom of the plug portion (6).

7. The quickly assembled boom end for a tunnel boring machine according to claim 6, characterized in that: The plug-in assembly further comprises a rotating rod (12) rotatably connected to the support (10), a driven gear (121) being fixedly provided on the rotating rod (12), a driving gear (122) being meshed and connected to the driven gear (121) being provided on the reciprocating screw rod (1001), a second reel (123) being slidably provided on the rotating rod (12) and being rotatably connected to the second sleeve (1002), a second pull rope (124) being wound around the second reel (123), and an end of the second pull rope (124) away from the second reel (123) passing through the plug-in component (11) and being connected to the shift block (113).

8. The quickly assembled boom end for a tunnel boring machine according to claim 7, characterized in that: The inner side walls of the first reel (7011) and the second reel (123) are both fixedly provided with guide strips (13), and the screw rod (701) and the rotating rod (12) are provided with guide grooves (131) for the guide strips (13) to slide.

9. A method for using the quickly assembled boom end for a tunnel boring machine according to claim 8, characterized in that: The following steps are involved: S1: When the cantilever part (2) is separated from the slewing seat (1), the cantilever part (2) is first hoisted by a hoist to ensure the safety of the disassembly, and then the driving motor (705) is controlled to operate. The output shaft of the driving motor (705) drives the screw (701) to rotate clockwise, and the first sleeve (702) moves along the axial direction of the screw (701). The first sleeve (702) no longer squeezes the elastic telescopic tube (704) and allows the elastic telescopic tube (704) to recover. S2: When the screw (701) rotates, it drives the first reel (7011) to reel in the first pull rope (7012), and the first pull rope (7012) pulls the conical head (901), causing the conical head (901) to slide in the movable groove (9). The conical head (901) no longer abuts against the end of the limit plate (802). The limit plate (802) is reset under the pull of the stretched first elastic element (8023), and the limit plate (802) shrinks in the shaft body (8), so that the movement of the first pin shaft (1011) and the second pin shaft (1021) is no longer blocked; S3: As the first sleeve (702) continues to move, the first sleeve (702) drives the first pin (1011) and the second pin (1021) to move through the connecting plate (703) and the elastic telescopic tube (704), so that the first pin (1011) is no longer plugged into the cantilever portion (2) and the slewing seat (1), and the second pin (1021) is no longer plugged into the lifting cylinder (3) and the slewing seat (1); S4: When the screw (701) rotates, the worm (7013) engages with the worm wheel (1004) on the reciprocating screw (1001) for transmission, the second sleeve (1002) moves axially along the reciprocating screw (1001), and the second sleeve (1002) drives the plug-in member (11) to move toward the plug portion (6) of the cantilever portion (2). The plug rod (1111) of the plug-in member (11) is plugged into the socket (601) of the plug portion (6). During this period, the shift block (113) avoids contact with the plug portion (6) until the shift block (113) is aligned with the shifting groove (602). The shift block (113) enters the shifting groove (602) under the push of the third elastic element (1123); S5: Then, the second sleeve (1002) moves back after moving to the end of the reciprocating screw rod (1001), and the second sleeve (1002) drives the plug part (6) to move out of the connection socket (5) through the shifting block (113) of the plug-in component (11), and the plug part (6) and the plug-in component (11) still maintain the plug-in state of the plug rod (1111) and the socket (601), thereby realizing the disconnection of the line between the cantilever part (2) and the comprehensive excavator; S6: When installing the cantilever part (2) and the slewing seat (1), the cantilever part (2) is hoisted by a hoisting device so that the first through hole (101) of the cantilever part (2) is aligned with the first through hole (101) of the slewing seat (1), and the second through hole (102) of the lifting cylinder (3) is aligned with the second through hole (102) of the slewing seat (1); S7: Then, the driving motor (705) is controlled to operate, so that the driving motor (705) drives the screw (701) to rotate counterclockwise, and the first sleeve (702) drives the first pin (1011) and the second pin (1021) to move through the connecting plate (703), so that the first pin (1011) is inserted into the first through hole (101) and the second pin (1021) is inserted into the second through hole (102), and then the annular plate (801) is brought into contact with the side wall of the cantilever portion (2) or the side wall of the rotary seat (1), and as the first sleeve (702) continues to move, the elastic telescopic tube (704) is compressed; S8: When the screw (701) rotates counterclockwise, the worm (7013) and the worm wheel (1004) on the reciprocating screw (1001) engage in reverse transmission, and the second sleeve (1002) moves from the end of the reciprocating screw (1001) to the end close to the cantilever part (2), and the second sleeve (1002) drives the plug part (6) connected to the plug-in component (11) to move, so that the plug part (6) moves toward the connecting socket (5) of the cantilever part (2); S9: When the reciprocating screw (1001) rotates in the opposite direction, the driving gear (122) on the reciprocating screw (1001) engages with the driven gear (121) on the rotating rod (12) to transmit the electric power, so that the second reel (123) on the rotating rod (12) reels the second pull rope (124), and the second pull rope (124) applies a pulling force to the shifting block (113), so that the shifting block (113) slides down along the connecting seat (112), and the shifting block (113) moves out of the shifting groove (602), and the plug-in element (11) pushes the plug part (6) to be inserted into the connecting socket (5), and starts to move back after the second sleeve (1002) moves to the end of the reciprocating screw (1001) close to the cantilever part (2). At this time, the plug-in element (11) that moves back will not drive the plug part (6) to move out of the connecting socket (5); S10: As the screw (701) continues to rotate, the first drum (7011) releases the first pull rope (7012), the first pull rope (7012) no longer pulls the conical head (901), and the second elastic element (902) pushes the conical head (901) to reset. After the limit plates (802) at the ends of the first pin shaft (1011) and the second pin shaft (1021) pass through the first through hole (101) or the second through hole (102), the conical head (901) squeezes the limit plates (802), and the limit plates (802) move out of the shaft body (8). The limit plates (802) limit the lifting cylinder (3) and the cantilever part (2) from being separated from the slewing seat (1), thereby achieving the docking installation of the cantilever part (2) and the slewing seat (1).

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