Combined cutter head and heading machine

Abstract

The invention belongs to the technical field of tunneling equipment, and particularly provides a combined cutter head and a tunneling machine. The combined cutterhead comprises a tunneling cutterhead, a central hole is formed in the center of the tunneling cutterhead, the combined cutterhead further comprises an advanced drilling and digging head and at least two sections of torque transmission components capable of being connected in a front-back rotation stopping mode, one section of torque transmission component is connected with the advanced drilling and digging head in a rotation stopping mode, and the torque transmission component is coaxially matched with the central hole. The excavation diameter of the advance drilling and excavating head is not smaller than the inner diameter of the center hole, a transmission connecting mechanism capable of being connected with and separated from the torque transmission component is arranged on the tunneling cutter head, and when the transmission connecting mechanism is connected with the torque transmission component, circumferential rotation stopping fit is achieved, and the axial position is relatively fixed. The heading machine comprises the combined cutter head. The tunneling cutterhead is equivalent to a power head for driving the advanced drilling and excavating head to excavate forwards, other power heads do not need to be arranged, the structure of the main machine of the tunneling machine can be simplified, the size of the main machine is further shortened, and the tunneling machine is more suitable for tunnel engineering with small turning radius.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel boring machines, and in particular relates to a combined cutter head and a tunnel boring machine. Background Art

[0002] Full-face tunnel boring machines (hereinafter referred to as tunnel boring machines) have the advantages of high efficiency and safety, and have been promoted and applied in many fields such as railways, highways, coal mines, and water diversion chambers. When constructing in poor strata, in order to ensure construction safety, it is necessary to conduct advance geological drilling and carry out corresponding support operations and geological improvement operations in advance.

[0003] At present, in the related prior art, an additional set of advanced drilling heads including a power head (including a rotating device and an axial propulsion device) is generally set up to perform advanced geological drilling operations. For example, the invention patent application with application publication number CN113638741A discloses a tunnel boring machine for reducing tunnel surrounding rock stress, the tunnel boring machine includes a large cutterhead (i.e., a tunnel boring cutterhead used to connect the main drive of the tunnel boring machine), and a rotatable and axially retractable small cutterhead is provided at the center of the large cutterhead. When the large cutterhead does not move, the small cutterhead can excavate a hole (guide hole) in advance. For another example, the invention patent application with application publication number CN113638741A discloses a synchronous advanced drilling structure, the advanced drilling structure includes a cutting cutterhead (i.e., a tunnel boring cutterhead) and a drilling device, the drilling device includes a power head, a drill rod, and a drilling tool, the center of the cutting cutterhead is provided with a center hole, and the drill rod can extend from the center hole to perform advanced drilling operations.

[0004] Although the above-mentioned related technologies can realize advanced geological drilling operations, due to the configuration of an independent power head, there needs to be enough space on the back of the cutter head to install the power head, which will increase the length of the main machine of the tunnel boring machine and make it difficult to use it for tunnel projects with a small turning radius. Summary of the invention

[0005] The object of the present invention is to provide a combined cutterhead to solve the technical problem that the prior art tunnel boring machine capable of excavating the central hole ahead of time is too long and is not suitable for tunnel engineering with a small turning radius. The object of the present invention is also to provide a tunnel boring machine to solve the same technical problem.

[0006] To achieve the above purpose, the technical solution of the combined cutter head provided by the present invention is: A combined cutterhead comprises a tunneling cutterhead for connecting to a main drive of a tunneling machine, a center hole being provided at the center of the tunneling cutterhead, an advance drilling head and at least two sections of torque transmission components which can be connected forward and backward with a rotation-proof connection, one section of the torque transmission component being connected with the advance drilling head with a rotation-proof connection, the torque transmission component being coaxially matched with the center hole, the excavation diameter of the advance drilling head being not less than the inner diameter of the center hole, a transmission connection mechanism which can be connected to and separated from the torque transmission component is provided on the tunneling cutterhead, and when the transmission connection mechanism is connected to the torque transmission component, the circumferential rotation-proof connection and the axial position are relatively fixed.

[0007] As a further improvement, the advance drilling head has an axially transparent slag inlet, the interior of the torque transmission component is a hollow structure and is connected to the slag inlet, and the space formed inside the hollow structure is sufficient for arranging slag discharge equipment.

[0008] As a further improvement, the space formed inside the hollow structure is suitable for the entry of personnel and supporting equipment for geological pretreatment.

[0009] As a further improvement, the torque transmission component is a sleeve.

[0010] As a further improvement, the transmission connection mechanism includes two or more latch mounting seats arranged at intervals in the circumferential direction, on which a radially movable latch is mounted, and a slot for inserting the latch is provided on the outer periphery of the torque transmission component.

[0011] As a further improvement, the transmission connection mechanism also includes an axial adjustment seat, which is axially movably mounted on the excavation cutter disc, and the latch mounting seat is mounted on the axial adjustment seat.

[0012] As a further improvement, the transmission connection mechanism is arranged on the back side of the excavation cutter disc.

[0013] As a further improvement, ear plates for mutual connection and cooperation are provided at both ends of the torque transmission component, and pin holes for connecting pins to pass through are provided on the ear plates.

[0014] As a further improvement, the advanced drilling head is an advanced cutter disc, which includes a disc body on which a roller cutter is arranged.

[0015] The present invention belongs to an improved invention creation, and its beneficial effect is: the combined cutterhead in the present invention is based on the excavation cutterhead, and an advance drilling head capable of advance drilling and a torque transmission component for transmitting torque are added, wherein the torque transmission component has more than two sections, and the front and rear sections can be connected (connected) with a rotation stop, and a transmission connection mechanism is arranged on the excavation cutterhead to connect the excavation cutterhead and the torque transmission component through the transmission connection mechanism (rotation stop + fixation). In the normal excavation process, as the excavation cutterhead rotates, the advance drilling head is fixed relative to the excavation cutterhead and the rotation stop is matched, that is, the advance drilling head rotates synchronously with the excavation cutterhead to complete the full-section tunnel excavation. If the excavation cutterhead encounters poor geology and requires advance drilling, the excavation cutterhead advances a certain distance, so that the transmission connection mechanism is separated from the torque transmission component, and the excavation cutterhead retreats a certain distance. In this process, the torque transmission component does not retreat with the movement, and then another section of the torque transmission component is connected at the rear of the torque transmission component, and then the torque transmission component and the transmission connection mechanism are connected, and then the excavation cutterhead advances a certain distance, and then the excavation cutterhead is driven forward for a distance, and at this time, the pilot tunnel can be excavated in advance. Compared with the prior art, the tunneling cutterhead in the present invention is equivalent to the power head that drives the advance drilling head to dig forward. There is no need to set up other power heads, which can simplify the structure of the tunneling machine main engine and shorten the size of the main engine, making it more suitable for tunnel projects with a small turning radius.

[0016] To achieve the above object, the technical solution of the tunnel boring machine provided by the present invention is: A tunnel boring machine includes a main drive connected to a combined cutterhead, the combined cutterhead includes a tunneling cutterhead connected to the main drive, a center hole is provided at the center of the tunneling cutterhead, and also includes an advance drilling head and at least two sections of torque transmission components that can be connected to the advance drilling head and can be rotated forward and backward, one section of the torque transmission component is connected to the advance drilling head and can be rotated, the torque transmission component is coaxially matched with the center hole, the excavation diameter of the advance drilling head is not less than the inner diameter of the center hole, and the tunneling cutterhead is provided with a transmission connection mechanism that can be connected to and separated from the torque transmission component. When the transmission connection mechanism is connected to the torque transmission component, the circumferential rotation is matched and the axial position is relatively fixed.

[0017] As a further improvement, the advance drilling head has an axially transparent slag inlet, the interior of the torque transmission component is a hollow structure and is connected to the slag inlet, and the space formed inside the hollow structure is sufficient for arranging slag discharge equipment.

[0018] As a further improvement, the space formed inside the hollow structure is suitable for the entry of personnel and supporting equipment for geological pretreatment.

[0019] As a further improvement, the torque transmission component is a sleeve.

[0020] As a further improvement, the transmission connection mechanism includes two or more latch mounting seats arranged at intervals in the circumferential direction, on which a radially movable latch is mounted, and a slot for inserting the latch is provided on the outer periphery of the torque transmission component.

[0021] As a further improvement, the transmission connection mechanism also includes an axial adjustment seat, which is axially movably mounted on the excavation cutter disc, and the latch mounting seat is mounted on the axial adjustment seat.

[0022] As a further improvement, the transmission connection mechanism is arranged on the back side of the excavation cutter disc.

[0023] As a further improvement, ear plates for mutual connection and cooperation are provided at both ends of the torque transmission component, and pin holes for connecting pins to pass through are provided on the ear plates.

[0024] As a further improvement, the advanced drilling head is an advanced cutter disc, which includes a disc body on which a roller cutter is arranged.

[0025] The present invention belongs to an improved invention creation, and its beneficial effect is: the combined cutterhead in the present invention is based on the excavation cutterhead, and an advance drilling head capable of advance drilling and a torque transmission component for transmitting torque are added, wherein the torque transmission component has more than two sections, and the front and rear sections can be connected (connected) with a rotation stop, and a transmission connection mechanism is arranged on the excavation cutterhead to connect the excavation cutterhead and the torque transmission component through the transmission connection mechanism (rotation stop + fixation). In the normal excavation process, as the excavation cutterhead rotates, the advance drilling head is fixed relative to the excavation cutterhead and the rotation stop is matched, that is, the advance drilling head rotates synchronously with the excavation cutterhead to complete the full-section tunnel excavation. If the excavation cutterhead encounters poor geology and requires advance drilling, the excavation cutterhead advances a certain distance, so that the transmission connection mechanism is separated from the torque transmission component, and the excavation cutterhead retreats a certain distance. In this process, the torque transmission component does not retreat with the movement, and then another section of the torque transmission component is connected at the rear of the torque transmission component, and then the torque transmission component and the transmission connection mechanism are connected, and then the excavation cutterhead advances a certain distance, and then the excavation cutterhead is driven forward for a distance, and at this time, the pilot tunnel can be excavated in advance. Compared with the prior art, the tunneling cutterhead in the present invention is equivalent to the power head that drives the advance drilling head to dig forward. There is no need to set up other power heads, which can simplify the structure of the tunneling machine main engine and shorten the size of the main engine, making it more suitable for tunnel projects with a small turning radius. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main engine part of the embodiment of the tunnel boring machine in the present invention (advanced drilling head tunneling); Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 It is a schematic diagram of the main engine part of the tunnel boring machine embodiment of the present invention (normal tunneling); Figure 4 for Figure 1 Schematic diagram of the distribution position of each pin.

[0027] Description of reference numerals: 1. Excavation cutterhead; 2. Front shield; 3. Main drive; 4. Propulsion cylinder; 5. Support shield; 6. Center belt conveyor; 7. Torque transmission components; 8. Transmission connection mechanism; 9. Mud discharge pump; 10. Advance drilling head; 801. Pin; 802. Radial cylinder; 803. Pin mounting seat; 804. Axial adjustment seat. DETAILED DESCRIPTION

[0028] In order to provide a roadheader that can achieve advance excavation of the central guide tunnel (hole) without causing the main machine to be too long, the basic technical concept of the present invention is to use the cutter head of the roadheader (which can be defined as a roadheader cutter head or a large cutter head) as the power head for advance excavation, and to connect the torque transmission component to the roadheader cutter head so that it is fixed in a relatively fixed axial position (transmitting thrust), and to continuously connect the torque transmission component through the center hole of the roadheader cutter head to achieve advance excavation without the need for an additional power head, thus avoiding the main machine being too long, and being more suitable for tunnel projects with a small turning radius.

[0029] Based on the above technical concept, the present invention is further described in detail below in conjunction with embodiments.

[0030] The specific embodiment of the tunnel boring machine provided by the present invention is as follows: Taking the double shield TBM as an example, the main part of the tunnel boring machine is as follows: Figure 1 As shown, the tunnel boring machine includes a tunnel boring cutter head 1, a front shield 2, a support shield 5, a main drive 3, a propulsion cylinder 4, a central belt conveyor 6, etc. The main drive 3 is installed on the front shield 2, which specifically includes a drive motor (or hydraulic motor), a reducer, a slewing bearing, etc. The tunnel boring cutter head 1 is installed at the slewing output end of the main drive 3 and can rotate under the action of the main drive 3. The support shield 5 is provided with a gripper mechanism that can hold the tunnel wall tightly. The propulsion cylinder 4 is connected between the front shield 2 and the support shield 5. When the gripper of the support shield 5 holds the tunnel wall tightly, the propulsion cylinder 4 extends forward to push the front shield 2 forward as a whole, thereby providing a thrust force for the tunnel boring cutter head 1 to squeeze and break the rock forward. The tunnel boring cutter head 1 in this embodiment is basically the same as the conventional TBM cutter head. A slag plate is provided on the back of the cutter head, which can shovel up the slag. Under the action of the deadweight of the slag, the slag slides down to the position of the central belt conveyor 6, and the slag is discharged backward by the central belt conveyor 6.

[0031] A center hole is provided at the center of the excavation cutterhead 1, and the position of the center hole can be used to connect the torque transmission component 7 to form a combined cutterhead to achieve advanced excavation. Figure 1-Figure 3As shown, the combined cutterhead also includes an advance drilling head 10 and a torque transmission component 7. The torque transmission component 7 should be provided with at least two sections, and the torque transmission component 7 can be connected (connected) front and rear with a rotation-stop connection, and one section of the torque transmission component 7 is connected with the advance drilling head 10 with a rotation-stop connection. The torque transmission component 7 should have sufficient strength to meet the transmission torque and propulsion force. The excavation cutterhead 1 is provided with a transmission connection mechanism 8, which can be connected and separated from the torque transmission component 7, that is, the transmission connection mechanism 8 has a movable end, and the connection and separation of the transmission connection mechanism 8 and the torque transmission component 7 can be achieved by controlling the movable end of the transmission connection mechanism 8. When the transmission connection mechanism 8 and the torque transmission component 7 are connected (the "time" here refers to the state of connection), the transmission connection mechanism 8 and the torque transmission component 7 are rotation-stopped in the circumferential direction (torque transmission), and the axial position is relatively fixed (thrust transmission). The torque transmission component 7 is coaxially matched with the center hole of the excavation cutterhead 1, so that the rotation of the excavation cutterhead 1 can synchronously drive the torque transmission component 7 to rotate on a fixed axis, thereby realizing the rotation of the advance drilling head 10.

[0032] During normal stratum excavation, Figure 3 As shown, only one section of the torque transmission component 7 may be connected to the excavation cutter head 1. Naturally, the advance drilling head 10 is located at the closest position to the excavation cutter head 1, and the excavation process at this time is no different from that of a general cutter head. Of course, in order to ensure full-section excavation, the excavation diameter of the advance drilling head 10 cannot be less than the inner diameter of the center hole.

[0033] When excavating in poor strata, it is necessary to drill a certain distance ahead to explore the geology. Figure 1 and Figure 2 As shown, the torque transmission component 7 can be connected as needed, and the excavation can be carried out forward under the action of the excavation cutter head 1. Figure 3 In the state shown, the excavation cutter disc 1 and the advance drilling head 10 advance forward for a distance together, and then release the connection between the transmission connection mechanism 8 and the last section of the torque transmission component 7, so that the transmission connection mechanism 8 is separated from the torque transmission component 7, and then the excavation cutter disc 1 is controlled to retreat (can be pulled back by the thrust cylinder 4) a certain distance, at which time the torque transmission component 7 and the advance drilling head 10 are immobile, and then a section of the torque transmission component 7 is connected, and then the transmission connection mechanism 8 is connected to the last section of the torque transmission component 7 at this time, and then the excavation cutter disc 1 is controlled to advance for a distance. By analogy, according to the actual distance of advance excavation, an appropriate number of torque transmission components 7 can be connected.

[0034] It should be noted that when the drill rod is connected for the first time, in order to ensure the stability of the advance drilling head 10, some auxiliary measures can be adopted during the construction process, such as setting a support structure connected to the rear end of the torque transmission component 7 to support the torque transmission component 7, or connecting an electric hoist between the excavation cutter head 1 and the advance drilling head 10, and extending the length of the sling of the electric hoist when the excavation cutter head 1 retreats. When the drill rod is subsequently connected, the central advance guide hole has been formed, and no auxiliary measures are needed. When transporting the torque transmission component 7 forward, taking the double shield TBM shown in the figure as an example, the central belt conveyor 6 can be retracted a certain distance to make way for the torque transmission component 7.

[0035] From the above introduction, it can be seen that this embodiment realizes advanced drilling in the excavation process without setting up a separate power head. During normal excavation, the length of the main engine of the tunnel boring machine is not much different from that of the general main engine of the tunnel boring machine, and is suitable for tunnel projects with a small turning radius.

[0036] As a preferred embodiment for facilitating slag removal during long-distance advance excavation, Figure 2 As shown, the advance drilling head 10 has an axially transparent slag inlet, and the interior of the torque transmission component 7 is a hollow structure and is connected to the slag inlet. At this time, the slag generated during the excavation process of the advance drilling head 10 can enter the interior of the torque transmission component 7. The space formed inside the hollow structure should at least be sufficient to arrange slag discharge equipment, such as the slag pump 9 shown in the figure. For example, the slag pump 9 can be a vacuum pump, which uses vacuum negative pressure to pump out the slag. Alternatively, the slag discharge equipment can be a spiral conveying auger, which can transport the slag backwards as the torque transmission component 7 rotates. It should be noted that at this time, the slag can be discharged to the soil bin behind the excavation cutter head 1, and can be discharged out of the tunnel from the conventional path during normal excavation.

[0037] However, it should be noted that in other embodiments, it is not excluded that the advance drilling head 10 is a solid drill bit structure and the torque transmission component 7 is a solid drill rod. In this case, a spiral slag removal groove can be provided on the drill rod for slag removal.

[0038] As a preferred embodiment for facilitating geological pretreatment, the torque transmission component 7 is also a hollow structure, and the space inside the hollow structure is sufficient for personnel and supporting equipment for geological pretreatment (such as anchor drilling machines, grouting equipment, etc.) to enter. The staff can complete the geological pretreatment in advance by entering the torque transmission component 7, making the construction safer.

[0039] Preferably, if Figure 2As shown, the torque transmission component 7 is a sleeve, such as a steel sleeve. The sleeve can be an integral structure or a spliced ​​structure composed of multiple pieces. The sleeve is fully enclosed in the circumferential direction, which can better protect the personnel and equipment inside, and is suitable for strata with poor geology. However, it should be noted that for strata with relatively good geology, the torque transmission component 7 can also be a device that is not completely enclosed in the circumferential direction, such as a frame structure, a cage structure, etc., as long as its strength meets the requirements.

[0040] When excavating in harder rock formations, the advance drilling head 10 is preferably in the form of a cutter head, such as Figure 2 As shown, the advanced drilling head 10 is an advanced cutter disc. Specifically, the advanced cutter disc includes a disc body, and a roller cutter is arranged on the disc body.

[0041] As a preferred embodiment to make the connection between the excavation cutter head 1 and the torque transmission component 7 more reliable, Figure 2 and Figure 4 As shown, the transmission connection mechanism 8 includes four bolt mounting seats 803 arranged axially at intervals, and a radially movable bolt 801 is installed on the bolt mounting seats 803. Accordingly, the outer periphery of the torque transmission component 7 is provided with a slot for the bolt 801 to be inserted. The bolt 801 can be inserted into the slot by moving radially inward, so as to achieve anti-rotation and axial fixed connection, and better stability. Specifically, the figure exemplifies a method of setting four bolt mounting seats 803, and the four bolt mounting seats 803 are evenly distributed circumferentially, but it should be noted that in other embodiments, the bolt mounting seats 803 can be set to two, three or even more. In the case of a large number of bolt mounting seats 803, the bolt mounting seats 803 may not be completely evenly distributed. The bolt 801 can be driven to move by a cylinder, that is, the radial cylinder 802 shown in the figure. Of course, the use of an electric cylinder is not excluded in other embodiments. The connection of the cylinder pipeline can be achieved by using a central swivel joint commonly used in the prior art.

[0042] It should be noted that those skilled in the art understand that, in addition to the above-mentioned latch-type transmission connection mechanism 8, in other embodiments, a clamp-type transmission connection mechanism 8 may be used, for example, a clamp-type radially movable clamp is provided, a friction block is provided on the clamp, and the friction between the clamp and the torque transmission component 7 is used to achieve circumferential rotation prevention and axial fixation. The latch-type structure is more reliable.

[0043] In a more preferred embodiment, the transmission connection mechanism 8 further includes an axial adjustment seat 804, which is axially movably mounted on the excavation cutter head 1, and the latch mounting seat 803 is mounted on the axial adjustment seat 804. Specifically, the movement of the axial adjustment seat 804 can also be driven by an oil cylinder. In this way, during actual construction, the axial position of the latch 801 can be flexibly adjusted according to the actual position of the slot, ensuring that the latch 801 and the slot can be normally connected.

[0044] Of course, in other embodiments, the axial adjustment seat 804 may not be provided. In this case, more slots may be appropriately provided on the torque transmission component 7, and each advancement and retreat stroke may be accurately controlled to ensure that the latch 801 and the slot are normally connected.

[0045] As a low-cost, easy-to-implement preferred embodiment, Figure 1-Figure 3 As shown, the transmission connection mechanism 8 is arranged on the back side of the excavation cutter head 1. At this time, the transmission connection mechanism 8 can be directly installed using the space on the back side of the excavation cutter head 1. Of course, in order to play a basic protective role, a protective plate can be installed at a suitable position.

[0046] However, it should be noted that in other embodiments, for the tunneling cutterhead 1 with a box-type structure, that is, the front panel of the tunneling cutterhead 1 is a box-type structure, the transmission connection mechanism 8 can be installed inside the tunneling cutterhead 1.

[0047] In addition, in order to facilitate the connection and disassembly of the torque transmission component 7, Figure 1 and Figure 2 As shown, in a preferred embodiment, both ends of the torque transmission component 7 are provided with ear plates for mutual connection and cooperation, and the ear plates are provided with pin holes for the connection pins to pass through, that is, the torque transmission component 7 and the torque transmission component 7 are also connected by a plug structure, and the connection pins can be inserted / pulled out for connection / removal, which is convenient and quick. Of course, multiple ear plates can also be arranged at intervals in the circumferential direction to ensure the connection strength.

[0048] Of course, in other embodiments, it is not excluded to adopt other structures to realize the connection between the torque transmission components 7, such as flange structure.

[0049] It should be noted that the above only provides an embodiment of a double-shield TBM in combination with the accompanying drawings, but the combined cutter head structure in the embodiment can be generally used in various types of tunneling machines such as slurry balance shield machines, earth pressure balance shield machines, open TBMs, single-shield TBMs, etc.

[0050] The specific embodiment of the combined cutter disc in the present invention is as follows: The embodiment of the combined cutter disc is the combined cutter disc described in the embodiment of the above-mentioned tunnel boring machine, and will not be described in detail here.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined cutterhead, comprising a driving cutterhead for connecting to a main drive of a tunnel boring machine, wherein a center hole is provided in the center of the driving cutterhead, wherein: It also includes an advance drilling head and at least two sections of torque transmission components that can be connected forward and backward with a fixed rotation. One section of the torque transmission component is connected to the advance drilling head with a fixed rotation. The torque transmission component is coaxially matched with the center hole. The excavation diameter of the advance drilling head is not less than the inner diameter of the center hole. The excavation cutter head is provided with a transmission connection mechanism that can be connected and separated from the torque transmission component. When the transmission connection mechanism is connected to the torque transmission component, the circumferential rotation is fixed and the axial position is relatively fixed.

2. The combined cutter head according to claim 1, wherein: The advanced drilling head has an axially transparent slag inlet, the interior of the torque transmission component is a hollow structure and is connected to the slag inlet, and the space formed inside the hollow structure is sufficient for arranging slag discharge equipment.

3. The combined cutter head according to claim 2, wherein: The space formed inside the hollow structure is suitable for the entry of personnel and supporting equipment for geological pretreatment.

4. The combined cutter head according to claim 2 or 3, characterized in that: The torque transmission component is a sleeve.

5. The combined cutter head according to any one of claims 1 to 3, characterized in that: The transmission connection mechanism comprises two or more latch mounting seats arranged at intervals in the circumferential direction, on which radially movable latches are mounted, and the outer circumference of the torque transmission component is provided with slots for the latches to be inserted.

6. The combined cutter head according to claim 5, wherein: The transmission connection mechanism also includes an axial adjustment seat, which is axially movably mounted on the excavation cutter disc, and the latch mounting seat is mounted on the axial adjustment seat.

7. The combined cutter head according to any one of claims 1 to 3, characterized in that: The transmission connection mechanism is arranged on the back side of the excavation cutterhead.

8. The combined cutter head according to any one of claims 1 to 3, characterized in that: Both ends of the torque transmission component are provided with ear plates for mutual connection and cooperation, and the ear plates are provided with pin holes for the connecting pins to pass through.

9. The combined cutter head according to claim 2 or 3, characterized in that: The advanced drilling head is an advanced cutterhead, which comprises a disc body on which a hob is arranged.

10. A roadheader comprising a main drive, characterized in that: The main drive is connected to the combined cutter head according to any one of claims 1 to 9.

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