A segment support shoe type coal roadway tunneling machine

Abstract

The present invention provides a segment shoe type coal roadway tunneling machine, which includes a support sleeve, a long main shaft, a cutter head, a plurality of segment support structures, a driving motor, a plurality of shoes, a first sliding bearing, a second sliding bearing, a roadway and a plurality of moving cylinders. One end of the long main shaft is connected to the cutter head. The support sleeve is sleeved on the outer surface of the long main shaft, and the outer surface of the long main shaft close to the cutter head is connected to the inner side wall of the support sleeve through the first sliding bearing. The end of the long main shaft far from the cutter head is connected to the driving motor through the second sliding bearing, so that the driving motor drives the long main shaft to rotate and drives the cutter head to rotate. The segment support structures are uniformly installed on the outer surface of the support sleeve behind the cutter head and along the circumferential direction of the support sleeve, which can solve the problems that the existing tunneling machines have low working efficiency and cannot carry out timely support in the environment of geological fracture zones and large surrounding rock deformations in the roadway, resulting in cave-ins and other problems.

Description

Technical Field

[0001] The invention belongs to the technical field of coal roadway driving machinery and equipment, and particularly relates to a segment support shoe type coal roadway driving machine. Background Art

[0002] Worldwide, coal roadway driving equipment basically uses roadheaders or full-face roadheaders. A roadheader is a single machine device. Although it can meet the real-time support requirements for roadway driving, its driving efficiency is very low and cannot meet the requirements for coal roadway driving efficiency in China. A full-face roadheader is a fully automated tunnel driving equipment that can quickly achieve tunnel driving and support. However, in the geological fracture zone and large surrounding rock deformation environment passed by the roadway, the driving efficiency of the full-face roadheader will be greatly reduced or even unable to complete the roadway driving work. This is because the full-face roadheader needs to drive a certain distance and then stop to carry out roadway support. But in the case of no support for this section of the tunnel, accidents such as collapse and surrounding rock shrinkage will occur, resulting in machine jamming. Therefore, once encountering such a geological environment, the full-face roadheader cannot be used for coal roadway driving.

[0003] In China, more than 70% of deep coal roadways are in the geological environment of fracture zones and large surrounding rock deformation, which has a huge impact on the driving efficiency of coal roadways and coal safety. Therefore, in order to meet the economic requirements, the coal roadway driving market in China urgently needs a coal roadway driving machinery and equipment that can continuously drive, provide real-time support, and ensure efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a segment support shoe type coal roadway driving machine, which can solve the problems of low working efficiency, inability to timely support, and resulting in collapse, etc. of the existing roadheader in the geological fracture zone and large surrounding rock deformation environment of the roadway.

[0005] To solve the above problems, the present invention provides a segment support shoe type coal roadway driving machine, including a support sleeve, a long main shaft, a cutter head, a segment support structure, a driving motor, a plurality of support shoes, a first sliding bearing, a second sliding bearing, a segment roadway, and a plurality of moving cylinders;

[0006] One end of the long main shaft is connected to the cutter head. The support sleeve is sleeved on the outer surface of the long main shaft, and the outer surface of the long main shaft close to the cutter head is connected to the inner side wall of the support sleeve through the first sliding bearing. The end of the long main shaft far from the cutter head is connected to the driving motor through the second sliding bearing, so that the driving motor drives the long main shaft to rotate and drives the cutter head to rotate;

[0007] The segment support structure is installed on the outer surface of the support sleeve along the circumference of the support sleeve, one end of the segment support structure contacts the segment tunnel, and a plurality of support shoes are evenly installed on the outer surface of the second sliding bearing along the circumference of the long main shaft, one end of the support shoes contacts the inner surface of the segment tunnel, so that the support shoes provide the long main shaft support force and axial movement force;

[0008] A plurality of movable cylinders are evenly installed on the side wall of the second sliding bearing close to the supporting sleeve along the circumference of the supporting sleeve, and one end of the movable cylinders is connected to the side wall of the supporting sleeve so that the movable cylinders pull the supporting sleeve to move axially.

[0009] Optionally, the segment support structure includes multiple supporting cylinders and multiple first segments to be installed, one ends of the multiple supporting cylinders are evenly installed on the outer surface of the supporting sleeve along the circumference of the supporting sleeve, and the other ends of the supporting cylinders are connected to the first segments to be installed, wherein the supporting cylinders correspond one-to-one to the first segments to be installed, and the first segments to be installed are in contact with the segment tunnel.

[0010] Optionally, the width of the first pipe segment to be installed is an integer value of 200 mm to 1000 mm.

[0011] Optionally, the segment support structure further includes a second segment to be installed, and the second segment to be installed is installed between adjacent first segments to be installed.

[0012] Optionally, the position where one end of the support shoe contacts the inner surface of the segment tunnel is the second installation position of the segment to be installed. Beneficial Effects

[0013] A segment support shoe type coal tunnel boring machine provided in an embodiment of the present invention provides a segment support structure at the rear of the cutter disc relative to the forward direction of the cutter disc and adjacent to the cutter disc. The segment support structure provides real-time support for the segment tunnel excavated by the cutter disc. The support shoe first supports the installed segment, and at the same time, the support shoe supports the long main shaft. Multiple segment support structures provide support adjacent to the rear of the cutter disc. The driving motor drives the long main shaft to rotate, driving the cutter disc to excavate the segment tunnel. After excavating to a certain distance, the supporting sleeve is driven by the mobile cylinder to move toward the cutter disc, thereby enabling the segment support structure to support the space just excavated by the cutter disc, thereby achieving real-time support, which not only improves work efficiency, but also improves safety and avoids dangers caused by machine jams and the like.

[0014] Advantages of the present invention:

[0015] 1. After the segment-supported coal roadway boring machine has completed the designed distance in the tunnel excavation, it can promptly carry out surrounding rock support to prevent geological disasters such as rock shrinkage and collapse.

[0016] 2. The support boot type support method has the characteristics of a small turning radius and can meet the requirements of coal roadway tunneling under different geological conditions.

[0017] 3. Adopting the long-axis long-distance torque transmission mode can provide a larger support space at the front end of the roadheader and meet the requirements of tunneling in roadways with a smaller diameter.

[0018] 4. The segment support boot type coal roadway roadheader has a simple and reliable structure and can ensure the completion of the design function and work requirements in a harsh environment.

[0019] 5. Adopting the 3 + 3 form segment support structure provides sufficient strength to meet the requirements of segment roadway support and actual installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the initial state of the segment support boot type coal roadway roadheader according to the embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the tunneling state of the segment support boot type coal roadway roadheader according to the embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the first segment to be installed in the roadway installed by the segment support boot type coal roadway roadheader according to the embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the support boot recovery of the segment support boot type coal roadway roadheader according to the embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the radial section of the segment of the segment support boot type coal roadway roadheader according to the embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the cross-section of the first segment to be installed and the second segment to be installed according to the embodiment of the present invention.

[0026] The reference signs are shown as:

[0027] 1. Support sleeve; 2. Long main shaft; 3. Cutter head; 4. Segment support structure; 40. Support oil cylinder; 41. First segment to be installed; 42. Second segment to be installed; 5. Driving motor; 6. Support boot; 7. First sliding bearing; 8. Second sliding bearing; 9. Segment roadway; 10. Moving oil cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Referring to Figures 1 to 6 shown, according to the embodiment of the present invention, a segment support boot type coal roadway roadheader, please refer to Figure 1, including a support sleeve 1, a long main shaft 2, a cutter head 3, a plurality of segment support structures 4, a driving motor 5, a plurality of support shoes 6, a first sliding bearing 7, a second sliding bearing 8, a segment roadway 9, and a plurality of moving cylinders 10; one end of the long main shaft 2 is connected to the cutter head 3, the support sleeve 1 is sleeved on the outer surface of the long main shaft 2, and the outer surface of the long main shaft 2 close to the cutter head 3 is connected to the inner side wall of the support sleeve 1 through the first sliding bearing 7, and the end of the long main shaft 2 far from the cutter head 3 is connected to the driving motor 5 through the second sliding bearing 8, so that the driving motor 5 drives the long main shaft 2 to rotate and drives the cutter head 3 to rotate; a plurality of segment support structures 4 are uniformly installed on the outer surface of the support sleeve 1 along the circumferential direction of the support sleeve 1, one end of each segment support structure 4 contacts the segment roadway 9, a plurality of support shoes 6 are uniformly installed on the outer surface of the second sliding bearing 8 along the circumferential direction of the long main shaft 2, and one end of each support shoe 6 contacts the inner surface of the segment roadway 9, so that the support shoes 6 provide a support force and an axial moving force for the long main shaft 2; a plurality of moving cylinders 10 are uniformly installed on the side wall of the second sliding bearing 8 close to the support sleeve 1 along the circumferential direction of the support sleeve 1, and one end of each moving cylinder 10 is connected to the side wall of the support sleeve 1, so that the moving cylinders 10 pull the support sleeve 1 to move axially. In the present invention, by arranging the segment support structure 4 at a position adjacent to the cutter head 3 behind the advancing direction of the cutter head 3, the segment support structure 4 performs real-time support on the segment roadway 9 excavated by the cutter head 3. First, the support shoes 6 support the segments that have been installed, and at the same time, the support shoes 6 support the long main shaft 2. A plurality of segment support structures 4 perform support behind the cutter head 3. The driving motor 5 drives the long main shaft 2 to rotate, driving the cutter head 3 to excavate the segment roadway 9. After excavating a certain distance, the support sleeve 1 is driven by the moving cylinders 10 to move towards the cutter head 3, thereby realizing the support of the segment support structure 4 for the space just excavated by the cutter head 3 and realizing real-time support, which not only improves the work efficiency but also improves the safety and avoids dangers caused by phenomena such as jamming.

[0029] Furthermore, the long main shaft 2 is connected to the support sleeve 1 through the first sliding bearing 7, that is, the long main shaft 2 can rotate circumferentially relative to the support sleeve 1, and at the same time provides a support structure for the cutter head 3. That is, when the long main shaft 2 rotates, the support sleeve 1 is in a static state, which is convenient for the segment support structure 4 to support the segment roadway 9. The present invention adopts the long main shaft 2 for the distance torque transmission mode, which can provide a larger support space for the advancing end of the roadheader during tunneling. The cutter head 3 drive structure of the segment shoe type coal roadway roadheader adopts a single drive motor 5 and the long main shaft 2 for transmission, which is significantly different from the cutter head drive structures of other roadheaders that adopt multiple motors and gear transmissions. For other types of roadheaders, since the cutter head is tightly connected to the gear transmission structure and the motor, a shield structure must be installed at the rear of the cutter head. There is no surrounding rock support for the part of this shield passing through the coal roadway tunnel. Once passing through the fractured zone and the part with serious shrinkage deformation of the surrounding rock, it will cause accidents such as jamming or even scrapping of the whole machine. Therefore, the present invention adopts the long main shaft 2 to realize the rear-end drive of the drive motor 5, providing a support space for the front-end tunneling of the segment shoe type coal roadway roadheader.

[0030] Furthermore, one end of the long main shaft 2 is fixedly installed with the cutter head 3. By driving the long main shaft 2 to drive the cutter head 3 to rotate, the tunneling of the segment roadway 9 is realized. The segment support structure 4 is installed at a position adjacent to the cutter head 3 and behind the cutter head 3 in the direction of tunneling to support the segment roadway 9. The distance that the cutter head 3 advances is after a length of 200 mm to 1000 mm, that is, the cutter head 3 stops tunneling operation. Please refer to Figure 2 and Figure 3 , at this time, the collapse of the surrounding rock of the coal roadway or the shrinkage of the surrounding rock cannot cause accidents such as jamming. The segment support structure 4 located behind the cutter head 3 and adjacent to the cutter head 3 timely supports the segment roadway 9 in the form of segments, which can realize the real-time support function and prevent jamming caused by the collapse of the roadway surrounding rock and the shrinkage of the surrounding rock.

[0031] Furthermore, the cutter head 3 and the segment support structure 4 are integrally connected, and the segment support structure 4 and the shoe 6 can move along the axial direction of the long main shaft 2.

[0032] Furthermore, the drive motor 5 is connected to the long main shaft 2 through the second sliding bearing 8, which not only reduces the friction between the drive motor 5 and the long main shaft 2, but also facilitates the installation of multiple shoes 6.

[0033] Furthermore, one end of the long main shaft 2 is connected to the first sliding bearing 7, and the other end of the long main shaft 2 is connected to the second sliding bearing 8, which is not only to reduce the diameter of the long main shaft 2, but also to improve the stiffness and strength of the long main shaft 2.

[0034] Furthermore, the segment support structure 4 is fixedly connected to the outer surface of the support sleeve 1 along the circumference of the support sleeve 1 and is adjacent to the rear of the cutterhead 3. The rear of the cutterhead 3 is the rear relative to the excavation direction of the cutterhead 3.

[0035] Furthermore, the segment support structure 4 is located immediately behind the cutter disc 3, and a certain support distance is maintained between the segment support structure 4 and the cutter disc 3, but the segment support structure 4 is immediately behind the cutter disc 3, that is, after the cutter disc 3 is excavated, the segment support structure 4 immediately behind the cutter disc 3 provides real-time support.

[0036] Furthermore, there are three support shoes 6, which are fixed on the outer surface of the second sliding bearing 8 along the circumference of the support sleeve 1. The function of the support shoes 6 is not only to support the long main shaft 2 and provide supporting force for the long main shaft 2, but also the telescopic movement of the support shoes 6 drives the long main shaft 2 to move along the axial direction of the segment tunnel 9.

[0037] Furthermore, the angle at which the support shoe 6 is installed along the support sleeve 1 is consistent with the angle at which the segment support structure 4 is installed along the support sleeve 1, that is, the angle between each two of the three support shoes 6 is 120°. The angle between each two of the three support cylinders 40 in the segment support structure 4 is 120°. However, the angle between one of the support shoes 6 and the adjacent support cylinder 40 is 60°, that is, the support shoe 6 and the support cylinder 40 are staggered, which not only facilitates the support cylinder 40 to support the segment tunnel 9, but also facilitates the support shoe 6 to support the segment tunnel 9.

[0038] Furthermore, the number of the movable cylinders 10 is multiple, and the present invention does not make further limitations thereto. The number is selected according to actual use, that is, the movable cylinders 10 drive the supporting sleeve 1 to move along the axial direction of the segment tunnel 9 .

[0039] Furthermore, the movable cylinder 10 is connected to the second sliding bearing 8 to play a supporting and fixing role, so that the movable cylinder 10 can pull the supporting sleeve 1 to move axially.

[0040] Please refer to Figure 5 and Figure 6 The segment support structure 4 includes a plurality of supporting cylinders 40 and a plurality of first segments to be installed 41. One end of the plurality of supporting cylinders 40 is evenly installed on the outer surface of the supporting sleeve 1 along the circumference of the supporting sleeve 1, and the other end of the supporting cylinders 40 is connected to the first segments to be installed 41. The supporting cylinders 40 correspond to the first segments to be installed 41 one by one, and the first segments to be installed 41 are in contact with the segment tunnel 9. The first segments to be installed 41 are used to support the segment tunnel 9 of the installed segments first, and then the segment tunnel 9 of the space excavated by the cutterhead 3 is driven by the supporting cylinders 40 to support the tunnel by the first segments to be installed 41.

[0041] Further, the first segment to be installed 41 is detachably installed on the support cylinder 40, which is convenient for disassembly, installation and replacement. That is, the included angle between adjacent support cylinders 40 is 120°, and the included angle between the support cylinder 40 and the adjacent support shoe 6 is 60°.

[0042] Further, the support cylinder 40 is installed on the support sleeve 1 through a driving gear structure, which not only realizes the driving rotation of the support cylinder 40 along the support sleeve 1, but also enables the support cylinder 40 to move radially along with the support sleeve. And the support sleeve 1 is connected to the long main shaft 2 through the first sliding bearing 7, and the long main shaft 2 is connected to the cutter head 3. That is, the support cylinder 40 is adjacent to the cutter head 3, and the support cylinder 40 will serve as the main support structure of the cutter head 3. The cutter head 3 of the segment support shoe type coal roadway tunneling machine is a mechanical component for cutting rock and soil to tunnel. The rotation of the cutter head 3 requires a stable main bearing support structure. Therefore, the segment support structure 4 not only plays a role in surrounding rock support, but also can serve as the main bearing support structure of the cutter head 3, providing stable tunneling for the cutter head 3 and improving work efficiency.

[0043] Further, since the number of support cylinders 40 is three, the stable support force is improved, making the support firm. That is, the present invention adopts a three-segment type segment support structure form, that is, the number of the first segments to be installed 41 is three, and the three form a three-segment type structure form inside the segment roadway 9. Among them, the shape of each first segment to be installed 41 is fan-shaped, and after the three first segments to be installed 41 support the segment roadway 9, they do not form a complete ring for support, that is, there is a certain gap between adjacent first segments to be installed 41.

[0044] Further, since the tunneling machine of the present invention is capable of passing through the deep earth fracture zone, but the broken roadway rock wall can no longer provide sufficient support required for the tunneling machine to advance forward, so the existing rock wall support shoe type structure cannot meet the actual tunneling requirements. Therefore, it is necessary to adopt a three-segment type structure form for support, which can not only timely support the collapse caused by the fragmentation of the roadway rock wall or the deformation caused by the shrinkage of the surrounding rock, but also provide a support force for the replacement of the support shoes of the segment support shoe type coal roadway tunneling machine.

[0045] Further, the gap between adjacent first segments to be installed 41 is for installing the second segments to be installed 42, that is, the number of the second segments to be installed 42 is three. Therefore, the segment support structure 4 of the present invention adopts a 3 + 3 segment mode for support. First, the first segments to be installed 41 are driven by the support cylinders 40 to support the tunneling segment roadway 9. The three sector-shaped first segments to be installed 41 do not form a complete ring, that is, a ring of segments is formed. After a ring of segments is formed for support, the second segments to be installed 42 are manually installed in the gaps between adjacent first segments to be installed 41, thus forming a complete segment support.

[0046] Further, the installation position of the second segments to be installed 42 is the position where the shoe 6 supports, that is, the installation position of the second segments to be installed 42 coincides with the position where the shoe 6 supports. The purpose is that while the shoe 6 provides the support force required for the tunneling machine to move forward at the position of the second segments to be installed 42, it can also tightly embed the second segments to be installed 42 into the wedge-shaped space between the two first segments to be installed 41 to form a complete segment ring.

[0047] Further, the first segments to be installed 41 are type A segments, that is, standard blocks, in a sector shape, and the number is three. The second segments to be installed 42 are type B segments, that is, wedge blocks, in an isosceles trapezoid shape, and the number is three. Among them, the type A segments mainly play a supporting role, and the type B segments mainly play the role of a capping segment for connecting the type A segments to form a complete ring of segments.

[0048] Further, one of the second segments to be installed 42 is installed on the vertical center line of the circular cross-section of the segment roadway 9, and the other two are respectively at an angle of 120° with the second segment to be installed 42 installed on the vertical center line. The center lines of the other two second segments to be installed 42 are respectively at an angle of 30° with the horizontal center line of the circular cross-section of the segment roadway 9, and both sides of the second segment to be installed 42 are at an angle of 20° with the center line of the second segment to be installed 42.

[0049] Further, after the cutterhead 3 of the segment shoe type coal roadway tunneling machine advances forward for a length of 200 mm to 1000 mm and stops the tunneling operation, that is, the segment support structure 4 is operated to support the segment roadway 9. The width of the first segments to be installed 41 is rounded to an integer value between 200 mm and 1000 mm according to the degree of fragmentation of the roadway surrounding rock and the speed of shrinkage deformation of the surrounding rock, which is equal to the length that the segment shoe type coal roadway tunneling machine advances forward, and the real-time support function can be realized to prevent the collapse of the roadway surrounding rock and the jamming caused by the shrinkage of the surrounding rock.

[0050] 1. Initial tunneling state of the segment shoe type coal roadway tunneling machine:

[0051] Please refer to Figure 1, a first segment to be installed 41 is mounted on a support oil cylinder 40 and abuts against the segment roadway 9 of the installed segments, providing a supporting force for the first sliding bearing 7. The shoe 6 is a hydraulic cylinder-based, telescopic mechanical component. The shoe 6 supports on the segment roadway 9 of the installed segments and is located at the position of the second segment to be installed 42 that has been installed. By extending the shoe 6, a propelling force is provided for the forward movement of the long main shaft 2 in the roadheader. Since the shoe 6 is fixedly connected to the second sliding bearing 8, while the shoe 6 propels the long main shaft 2 to move forward, it also provides a supporting force for the second sliding bearing 8. The cutter head 3 is fixedly connected to the long main shaft 2. The drive motor 5 transmits torque through the long main shaft 2 to drive the cutter head 3 to rotate. At this time, the propelling force for the forward movement of the cutter head 3 is provided by the long main shaft 2. The support oil cylinder 40 is fixedly connected to the support sleeve 1, and the long main shaft 2 axially moves in the support sleeve 1. Through the above method, the segment shoe type coal roadway roadheader and the forward movement function are realized.

[0052] 2. The state where all components stop moving after the segment shoe type coal roadway roadheader has advanced a set distance:

[0053] Please refer to Figure 2 , at this stage, the drive motor 5 stops working, and the corresponding cutter head 3 no longer rotates for tunneling. Both the shoe 6 and the support oil cylinder 40 are in the supporting position. Under the condition that the shoe 6 provides sufficient supporting force, the shoe 6 no longer extends. The shoe 6 pushes the long main shaft 2 and the cutter head 3 fixedly connected to the long main shaft 2 to move forward along the axial direction of the long main shaft 2 by a displacement distance equal to the width of a first segment to be installed 41. At this time, the entire roadheader is in a stationary state.

[0054] 3. The state where the segment shoe type coal roadway roadheader installs the segment to support the roadway 9:

[0055] Please refer to Figure 3 , at this stage, the stable support of the entire roadheader depends on the shoe 6 and the cutter head 3 to provide sufficient supporting force. The support oil cylinder 40 retracts, and the moving oil cylinder 10 fixedly installed on the long main shaft 2 pushes the support sleeve 1 to move axially along the direction of the cutter head 3. Correspondingly, the support oil cylinder 40 fixedly installed on the support sleeve 1 axially moves to the space in the tunnel excavated by the roadheader where roadway support has not been carried out. After the moving oil cylinder 10 extends to the designed position, the support oil cylinder 40 drives the first segment to be installed 41 to move to the designed position, completing the installation of a full ring of segments. At this time, there is no requirement for the roadheader to advance forward, and only the installation work of one ring of segments is completed. The installation of the A-type segments (standard blocks) is completed through a mechanical structure, and the installation of the B-type segments (wedge blocks) is completed by manual operation.

[0056] 4. The state where the shoes of the segment shoe type coal roadway roadheader are retracted:

[0057] Please refer to Figure 4At this stage, the stable support of the entire roadheader relies on the support cylinder 40 and the first segment to be installed 41 newly installed on the segment tunnel 9 and the cutterhead 3 to provide sufficient support force in the tunnel rock and soil. The connecting cylinder connecting the support shoe 6 and the long main shaft 2 is recovered and no longer supported on the segment tunnel 9 of the installed segment. Manual operation is required to move the support shoe 6 to the starting position for the next excavation cycle. At this time, the roadheader has no working requirements for forward excavation, but only needs to move the support shoe 6 to the designed position. At this point, the segment support shoe type coal roadway roadheader completes all set actions within one cycle.

[0058] The present invention designs a segment support structure 4 at the rear of the cutterhead 3 of the tunnel boring machine. After the cutterhead 3 excavates a specified distance, the surrounding rock of the segment tunnel 9 is supported in time, so as to achieve real-time support and avoid collapse, jamming and other phenomena. The transmission mode of long-spindle long-distance torque transmission is adopted. The cutterhead 3 and the drive motor 5 of the cutterhead 3 are respectively located at the two ends of the long spindle 2. The drive motor 5 of the cutterhead 3 is rear-placed, which can provide space for the segment support structure 4 of the segment tunnel 9, meet the actual needs of timely support of the segment tunnel 9, and provide enough space for tunnel support and excavation. The support cylinder 40 is fixedly connected to the support sleeve 1. The support sleeve 1 is connected to the long spindle 2 by the first sliding bearing 7. The support sleeve 1 can move axially along the long spindle 2. The segment support, segment support and excavation functions of the segment support shoe type coal tunnel boring machine are realized in the above manner. The segment support structure 4 of the 3+3 mode is adopted. This kind of segment structure is simple and reliable, easy to transport and install quickly, and can provide sufficient strength to meet the support requirements of the segment tunnel 9. The segment support structure 4 can not only realize the support function of the segment tunnel 9, but also provide front-end support force for the segment support shoe type coal tunnel boring machine, meeting the actual functional requirements of the boring machine for stable excavation and step-by-step forward movement.

[0059] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

Claims

1. A segment support shoe type coal roadway tunneling machine, characterized in that, It includes a support sleeve (1), a long main shaft (2), a cutter head (3), a segment support structure (4), a driving motor (5), a plurality of support shoes (6), a first sliding bearing (7), a second sliding bearing (8), a segment roadway (9) and a plurality of moving cylinders (10); One end of the long main shaft (2) is connected to the cutter head (3). The support sleeve (1) is sleeved on the outer surface of the long main shaft (2). The outer surface of the long main shaft (2) near the cutter head (3) is connected to the inner side wall of the support sleeve (1) through the first sliding bearing (7). One end of the long main shaft (2) away from the cutter head (3) is connected to the driving motor (5) through the second sliding bearing (8), so that the driving motor (5) drives the long main shaft (2) to rotate and drives the cutter head (3) to rotate; The segment support structure (4) is installed on the outer surface of the support sleeve (1) along the circumferential direction of the support sleeve (1). One end of the segment support structure (4) contacts the segment roadway (9). A plurality of support shoes (6) are evenly installed on the outer surface of the second sliding bearing (8) along the circumferential direction of the long main shaft (2). One end of each support shoe (6) contacts the inner surface of the segment roadway (9), so that the support shoes (6) provide support force and axial moving force for the long main shaft (2); A plurality of moving cylinders (10) are evenly installed on the side wall of the second sliding bearing (8) close to the support sleeve (1) along the circumferential direction of the support sleeve (1). One end of each moving cylinder (10) is connected to the side wall of the support sleeve (1), so that the moving cylinders (10) pull the support sleeve (1) to move axially; The segment support structure (4) includes a plurality of support cylinders (40) and a plurality of first segments to be installed (41). One end of the plurality of support cylinders (40) is evenly installed on the outer surface of the support sleeve (1) along the circumferential direction of the support sleeve (1). The other end of each support cylinder (40) is connected to the first segment to be installed (41). Among them, the support cylinders (40) correspond to the first segments to be installed (41) one by one, and the first segments to be installed (41) contact the segment roadway (9).

2. The segment support shoe type coal roadway tunneling machine according to claim 1, characterized in that, The width of the first segment to be installed (41) is an integer value from 200 mm to 1000 mm.

3. The segment support shoe type coal roadway tunneling machine according to claim 1, characterized in that, The segment support structure (4) further includes a second segment to be installed (42), and the second segment to be installed (42) is installed between adjacent first segments to be installed (41).

4. The segment support shoe type coal roadway tunneling machine according to claim 1, characterized in that, The position where one end of each support shoe (6) contacts the inner surface of the segment roadway (9) is the installation position of the second segment to be installed (42).

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