A rotary mechanism and tunnel boring machine

Abstract

The present invention discloses a slewing mechanism and a tunnel boring machine, wherein the slewing mechanism comprises a slewing bearing and a slewing table, wherein the outer peripheral side of the slewing bearing is provided with a first plug-in portion; the slewing table comprises at least two slewing parts which are sequentially detachably connected along the outer peripheral side of the slewing bearing, and a second plug-in portion is provided on a side of the slewing part close to the slewing bearing; the second plug-in portion is plugged and fixed with the first plug-in portion to connect the slewing table to the slewing bearing. The slewing mechanism provided by the present invention can effectively reduce the assembly space required for assembling the slewing table to the slewing bearing by assembling at least two slewing parts to the slewing bearing along the outer peripheral side of the slewing bearing, and can also realize the rapid disassembly and assembly of the slewing table on the slewing bearing, thereby improving the efficiency of the workers in assembling the slewing table.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a slewing mechanism and a tunnel boring machine. Background Art

[0002] Roadheader is a commonly used mining machinery and a main equipment for tunnel mining in coal mines. It is an underground tunnel rapid tunneling equipment that integrates tunnel mining, collection and transportation. The roadheader mainly includes a cutting arm, a traveling mechanism, a rotating mechanism and a loading mechanism.

[0003] The cutting arm of the tunnel boring machine is connected to the slewing mechanism, which is the basic device for realizing the slewing operation of the cutting arm of the tunnel boring machine. It plays a connecting role and will directly affect the slewing angle and the size of the mining area of ​​the coal mining operation. The slewing table and the slewing bearing on the existing slewing mechanism often need to be connected by a circle of high-strength bolts. When the tunnel boring machine is working underground in a coal mine, the space conditions for assembling the slewing table on the slewing bearing are limited. Therefore, the existing slewing mechanism is not conducive to assembling the slewing table on the slewing bearing underground in a coal mine. At the same time, since the slewing table is connected to the slewing bearing by a circle of high-strength bolts, more manpower is required to tighten the bolts, which leads to the problem of low assembly efficiency of the slewing mechanism. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned related technologies, the present invention provides a slewing mechanism and a tunnel boring machine, wherein the slewing mechanism solves the assembly problem of the slewing mechanism in a coal mine with limited space conditions by designing the slewing table as an assembled structure of at least two slewing parts.

[0005] A first aspect of the present invention provides a rotary mechanism, comprising:

[0006] A slewing bearing, the outer peripheral side of which is provided with a first plug-in portion;

[0007] The turntable comprises at least two turntables which are sequentially detachably connected along the outer peripheral side of the turntable, and a second plug-in portion is provided on a side of the turntable close to the turntable;

[0008] The second plug-in portion is plugged and fixed with the first plug-in portion to connect the turntable to the slewing support.

[0009] Furthermore, the slewing bearing includes a fixed part and a rotating part, the fixed part is annular and is used to be connected to the main body of the tunnel boring machine, the rotating part is rotatably connected to the inner side of the fixed part and includes a connecting section protruding from the fixed part, and the first plug-in part is arranged on the connecting section.

[0010] Furthermore, the first plug-in portion includes a first inclined surface and a second inclined surface which are arranged on the outer peripheral side of the connecting section and are arranged at an angle;

[0011] The second plug-in portion includes a third inclined surface and a fourth inclined surface set at an angle; the first inclined surface abuts against the third inclined surface, and the second inclined surface abuts against the fourth inclined surface, so as to plug and fix the second plug-in portion with the first plug-in portion.

[0012] Furthermore, the cross-section of the first plug-in portion is a first trapezoid, and the two sides of the first trapezoid are respectively the first inclined surface and the second inclined surface; the cross-section of the second plug-in portion is a second trapezoid, and the two sides of the second trapezoid are respectively the third inclined surface and the fourth inclined surface.

[0013] Furthermore, there are two rotating parts, the first ends of the two rotating parts are hinged via a first connecting component, and the second ends of the two rotating parts are detachably connected via a second connecting component.

[0014] Furthermore, the first connection component includes:

[0015] A first connecting hole, correspondingly provided at the first ends of the two rotating parts;

[0016] A pin is inserted into the first connecting holes of the two rotating parts.

[0017] Furthermore, the second connection component includes:

[0018] A connecting plate, correspondingly arranged at the second ends of the two rotating parts, and a second connecting hole is opened on the connecting plate;

[0019] A connecting piece is threadedly connected to the second connecting holes on the two rotating parts.

[0020] Furthermore, the two rotating parts are fixedly connected with an articulated frame, and the articulated frame includes:

[0021] The first through hole is arranged close to the first connecting assembly, and the first through hole is used for being hinged to the rotary cylinder of the cutting part.

[0022] Furthermore, the articulated frame further comprises:

[0023] a second through hole, disposed close to the second connecting assembly, the second through hole being used for being hingedly connected to the cutting portion;

[0024] The third through hole is arranged close to the second through hole, and the third through hole is used for being hinged to the lifting cylinder of the cutting part.

[0025] The slewing mechanism provided by the present invention designs a turntable as an assembled structure of at least two slewing parts, and after the at least two slewing parts are sequentially connected along the outer peripheral side of the slewing support, they are fixed by plugging the second plugging part into the first plugging part, so that the assembly between the turntable and the slewing support can be completed only by sequentially detachably connecting the at least two slewing parts along the outer peripheral side of the slewing support, and plugging the second plugging part into the first plugging part. Among them, by assembling the at least two slewing parts onto the slewing support along the outer peripheral side of the slewing support, not only can the assembly space required for assembling the turntable onto the slewing support be effectively reduced, but also the turntable can be quickly disassembled and assembled on the slewing support, thereby improving the efficiency of the staff in assembling the turntable.

[0026] A second aspect of the present invention provides a tunneling machine, comprising:

[0027] Body part;

[0028] Cutting arm;

[0029] And the swivel mechanism as described above, the swivel mechanism is arranged on the main body, and the cutting arm is connected to the swivel mechanism.

[0030] The tunnel boring machine provided by the present invention designs the turntable on the turntable mechanism as an assembled structure of at least two turntable parts, so that the assembly between the turntable and the turntable support can be completed only by detachably connecting the at least two turntable parts in sequence along the outer peripheral side of the turntable support, and plugging the second plug-in part into the first plug-in part. This can not only effectively reduce the assembly space required for assembling the turntable onto the turntable support, but also realize the rapid disassembly and assembly of the turntable on the turntable support, thereby improving the efficiency of the workers in assembling the turntable.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of a slewing mechanism in the related art provided on a tunnel boring machine;

[0035] Figure 2It is a structural schematic diagram of a rotary mechanism in the related art;

[0036] Figure 3 An exploded view of a slewing mechanism according to an exemplary embodiment of the present invention;

[0037] Figure 4 A top view of a slewing mechanism according to an exemplary embodiment of the present invention;

[0038] Figure 5 for Figure 4 Section view in the AA direction.

[0039] In the figure:

[0040] 1a-slewing bearing, 2a-slewing table, 3a-bolts, 4a-main body, 5a-cutting arm;

[0041] 1-slewing bearing, 101-first plug-in portion, 102-fixed portion, 103-rotating portion, 1011-first inclined surface, 1012-second inclined surface;

[0042] 2-turntable, 201-rotating part, 202-second plug-in part, 203-first connecting hole, 204-pin shaft, 205-connecting plate, 206-connecting piece, 207-second connecting hole, 208-hinge frame, 2021-third inclined plane, 2022-fourth inclined plane, 2081-first through hole, 2082-second through hole, 2083-third through hole. DETAILED DESCRIPTION

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0047] The rotary mechanism and the tunnel boring machine in the related technology, such as Figure 1 and 2 As shown, the slewing bearing 1a is connected to the main body 4a by bolts, and the cutting arm 5a is hinged to the front end of the slewing table 2a, wherein the slewing table 2a is connected to the rotating part 103 on the slewing bearing 1a by a circle of high-strength bolts 3a. Therefore, the slewing mechanism in the related art has the following disadvantages:

[0048] 1. Since the roadheader works underground in a coal mine, the space for assembling the turntable 2a on the slewing bearing 1a is limited, which is not conducive to tightening the turntable 2a on the slewing bearing 1a underground in the coal mine. At the same time, since the bolts 3a used to tighten the turntable 2a have to bear all the loads transmitted by the cutting operation, wherein the loads transmitted by the cutting operation mainly include the tipping moment and the axial pressure, therefore, in the related art, this connection method between the turntable 2a and the slewing bearing 1a has a great influence on the bolts. The fastening process of bolt 3a requires high requirements; and because the turntable 2a is subjected to a large force, it is necessary to appropriately increase the specifications and number of bolts used to tighten the turntable 2a. However, due to the size limitation of the turntable 2a, too many bolts 3a cannot be used, and the safety factor of bolts 3a can only be increased by increasing the utilization rate of bolts 3a. Therefore, the utilization rate of bolts 3a used to tighten the turntable 2a is high. If the tightening process of bolts 3a is not standardized, the pre-tightening force dispersion of bolts 3a is large, and it is easy to cause failures such as breakage.

[0049] 2. When the roadheader is transferred after completing the tunnel operation, the cutting arm needs to be disassembled before shipment. The slewing table 2a and the slewing bearing 1a in the related art need to be connected by a circle of high-strength bolts 3a. Therefore, it takes a long time to disassemble and install the bolts 3a used to connect the slewing table 2a and the slewing bearing 1a. According to statistics, it takes 3-4 hours to apply torque with a manual wrench, which seriously affects the installation efficiency.

[0050] 3. Since the utilization rate of the bolts 3a used to connect the turntable 2a and the slewing bearing 1a is high, and the tightening process in the prior art cannot ensure the uniformity of the pre-tightening force, it is easy to cause a large dispersion of the pre-tightening force of the bolts 3a, and even the pre-tightening force of some bolts 3a may have reached the yield strength. Therefore, in order to ensure the reliability of the bolts 3a, the disassembled bolts 3a need to be directly scrapped, which causes huge waste.

[0051] Therefore, in order to solve the assembly problem of the slewing mechanism in the related art under the condition of limited space conditions in a coal mine, the present invention provides a slewing mechanism and a tunneling machine.

[0052] The present invention provides a rotary mechanism for driving the cutting arm to rotate. Figure 3 and 4 , including a slewing bearing 1 and a slewing table 2, the slewing bearing 1 is arranged on the main body of the tunnel boring machine, and a first plug-in portion 101 is provided on the outer peripheral side of the slewing bearing 1; the slewing table 2 is connected to the cutting arm, and the slewing table 2 includes at least two slewing parts 201 that are detachably connected in sequence along the outer peripheral side of the slewing bearing 1, and a second plug-in portion 202 is provided on the side of the slewing part 201 close to the slewing bearing 1; after at least two slewing parts 201 are connected in sequence along the outer peripheral side of the slewing bearing 1, the second plug-in portion 202 is plugged and fixed with the first plug-in portion 101 to connect the slewing table 2 to the slewing bearing 1.

[0053] The slewing mechanism provided by the present invention designs the turntable 2 as an assembled structure of at least two slewing parts 201, and after the at least two slewing parts 201 are sequentially connected along the outer peripheral side of the slewing bearing 1, they are fixed by plugging the second plugging part 202 with the first plugging part 101, so that the assembly between the turntable 2 and the slewing bearing 1 can be completed only by sequentially detachably connecting the at least two slewing parts 201 along the outer peripheral side of the slewing bearing 1 and plugging the second plugging part 202 with the first plugging part 101. Among them, by assembling the at least two slewing parts 201 onto the slewing bearing 1 along the outer peripheral side of the slewing bearing 1, not only can the assembly space required for assembling the turntable 2 onto the slewing bearing 1 be effectively reduced, but also the turntable 2 can be quickly disassembled and assembled on the slewing bearing 1, thereby improving the efficiency of the staff in assembling the turntable 2.

[0054] In some embodiments, the slewing bearing 1 includes a fixed portion 102 and a rotating portion 103, the fixed portion 102 is annular, and the fixed portion 102 is used to be connected to the main body of the tunnel boring machine; the rotating portion 103 is rotatably connected to the inner side of the fixed portion 102, and the rotating portion 103 includes a connecting section protruding from the fixed portion 102, and the first plug-in portion 101 is arranged on the connecting section. In this embodiment, by arranging the first plug-in portion 101 on the connecting section on the rotating portion 103, the second plug-in portion 202 is plugged and fixed to the first plug-in portion 101, and the turntable 2 can be fixedly connected to the rotating portion 103, thereby realizing that the turntable 2 is rotatably connected to the fixed portion 102 through the rotating portion 103.

[0055] Furthermore, the first plug-in portion 101 includes a first inclined surface 1011 and a second inclined surface 1012 which are arranged on the outer peripheral side of the connecting section and are set at an angle; the second plug-in portion 202 includes a third inclined surface 2021 and a fourth inclined surface 2022 which are set at an angle; after at least two rotating portions 201 are connected in sequence along the outer peripheral side of the rotating bearing 1, the first inclined surface 1011 abuts against the third inclined surface 2021, and the second inclined surface 1012 abuts against the fourth inclined surface 2022, so as to plug and fix the second plug-in portion 202 with the first plug-in portion 101.

[0056] For example: See Figure 5 The first plug-in portion 101 is an annular groove that is recessed from the outside to the inside along the radial direction of the connecting section, and the groove walls of the annular groove are respectively a first inclined surface 1011 and a second inclined surface 1012; the second plug-in portion 202 is an arc-shaped protrusion that is adapted to the annular groove and is provided on the side of the rotating portion 201 close to the slewing bearing 1, and the side walls of the arc-shaped protrusion are respectively the second inclined surface 1012 and the fourth inclined surface 2022. After at least two rotating portions 201 are sequentially connected along the outer peripheral side of the rotating portion 103, the arc-shaped protrusion extends into the annular groove, the first inclined surface 1011 abuts against the third inclined surface 2021, and the second inclined surface 1012 abuts against the fourth inclined surface 2022, so that the arc-shaped protrusion is plugged and fixed to the annular groove, thereby realizing the fixed connection between the rotating portion 103 and the rotating portion 201. By providing an annular groove on the outer peripheral side of the rotating part 103, and providing an arc-shaped protrusion that can be matched with the annular groove on the side of the rotating part 201 close to the slewing bearing 1, and after at least two rotating parts 201 are connected in sequence along the outer peripheral side of the slewing bearing 1, the arc-shaped protrusion can be extended into the annular groove and plugged and fixed with the annular groove, it is convenient to assemble at least two rotating parts 201 on the peripheral side of the slewing bearing 1, and the connection stability of the rotating part 201 on the rotating part 103 can be ensured, wherein the central axis of the annular groove and the central axis of the slewing bearing 1 are located on the same straight line, and the concave depth of the annular groove is greater than the protruding height of the arc-shaped protrusion.

[0057] Specifically, the cross-section of the first plug-in portion 101 is a first trapezoid, and the two sides of the first trapezoid are respectively the first inclined surface 1011 and the second inclined surface 1012; the cross-section of the second plug-in portion 202 is a second trapezoid, and the two sides of the second trapezoid are respectively the third inclined surface 2021 and the fourth inclined surface 2022; when the second plug-in portion 202 is plugged and fixed with the first plug-in portion 101, the first inclined surface 1011 is in contact with the third inclined surface 2021, and the second inclined surface 1012 is in contact with the fourth inclined surface 2022.

[0058] For example, see Figure 5 When the first plug-in portion 101 is an annular groove, the cross section of the annular groove is a first trapezoid, and the width of the annular groove gradually decreases from the outside to the inside of the slewing bearing 1; when the second plug-in portion 202 is an arc-shaped protrusion, the cross section of the arc-shaped protrusion is a second trapezoid, and after the arc-shaped protrusion extends into the annular groove, the two waists of the second trapezoid are respectively fitted and abutted with the two waists of the first trapezoid. More specifically, the first trapezoid and the second trapezoid are preferably right-angled trapezoids, and the slopes of the bevel waists of the first trapezoid and the second trapezoid are the same, wherein the slopes of the bevel waists of the first trapezoid and the second trapezoid are both θ, the concave depth value of the annular groove is the length value of the right-angle waist of the first trapezoid, and the protrusion height value of the arc-shaped protrusion is the length value of the right-angle waist of the second trapezoid, wherein the right-angle waist of the first trapezoid is closer to the side where the slewing bearing 1 is connected to the main body relative to its bevel waist, and the right-angle waist of the first trapezoid is closer to the top of the slewing portion 201 relative to its bevel waist.

[0059] In some embodiments, there are two rotating parts 201 , the first ends of the two rotating parts 201 are hinged via a first connecting component, and the second ends of the two rotating parts 201 are detachably connected via a second connecting component. In this embodiment, by preferably having two rotating parts 201, the connection between the rotating parts 201 on the turntable 2 can be reduced, thereby reducing the work intensity when assembling and disassembling the turntable 2; when connecting the two rotating parts 201 along the outer peripheral side of the slewing bearing 1, the first ends of the two rotating parts 201 are first hinged by the first connecting component, and then the two rotating parts 201 that are hinged to each other are mounted on the slewing bearing 1, and the second ends of the two rotating parts 201 are fixedly connected by the second connecting component, so that the assembly of the two rotating parts 201 on the slewing bearing 1 can be completed; when the two rotating parts 201 are disassembled from the slewing bearing 1, the two rotating parts 201 can be removed from the slewing bearing 1 by disassembling the second connecting component from the two rotating parts 201. It can be seen that the two rotating parts 201 are hinged at their first ends by the first connecting component, which can facilitate the assembly and disassembly of the two rotating parts 201 connected by the first connecting component on the slewing bearing 1.

[0060] Specifically, the first connection assembly includes a first connection hole 203 and a pin 204, and the two first connection holes 203 are correspondingly arranged at the first ends of the two rotating parts 201; the pin 204 is inserted into the first connection holes 203 of the two rotating parts 201, and the pin 204 is rotatably connected to the first connection hole 203, and the two rotating parts 201 are detachably hinged through the cooperation between the pin 204 and the first connection hole 203. In this embodiment, by preferably using the first connection assembly as a structure that cooperates with the pin 204 and the first connection hole 203, not only is the structure simple, but also the assembly and disassembly of the two rotating parts 201 at the first end can be facilitated.

[0061] More specifically, the second connection assembly includes a connection plate 205 and a connection member 206. The two connection plates 205 are correspondingly arranged at the second ends of the two rotating parts 201. The connection plates 205 are provided with second connection holes 207. The connection members 206 are threadedly connected with the second connection holes 207 on the two rotating parts 201, so that the two rotating parts 201 can be detachably connected through the cooperation between the connection members 206 and the second connection holes 207. In this embodiment, the connection member 206 is preferably a bolt. The second ends of the two rotating parts 201 are fixedly connected by the cooperation between the bolt and the thread on the second connection hole 207 on the connection plate 205, so that the second ends of the rotating parts 201 can be detachably connected.

[0062] In some embodiments, the slewing mechanism further includes a driving assembly, which includes a slewing cylinder, a first end of which is hinged to the turntable 2, and a second end of which is hinged to the main body, and the slewing cylinder is used to make the turntable 2 rotate axially under the extension and contraction of the slewing cylinder. In this embodiment, the driving assembly includes two slewing cylinders, and the cylinder barrels of the two slewing cylinders are both hinged to the main body, wherein the piston rod of one slewing cylinder is hinged to one side of the turntable 2, and the piston rod of the other slewing cylinder is hinged to the other side of the turntable 2, so that the turntable 2 rotates axially under the extension and contraction of the two slewing cylinders.

[0063] Specifically, the two rotating parts 201 are fixedly connected with an articulated frame 208, and the articulated frame 208 includes a first through hole 2081. The first through hole 2081 is opened on the articulated frame 208 and is arranged near the first connecting assembly. The first through hole 2081 is used to articulate with the rotary cylinder of the cutting part. When the turntable 2 is assembled by the two rotating parts 201, the articulated frame 208 is arranged on the side of the rotating part 201 away from the slewing support 1, and after the two rotating parts 201 are assembled into the turntable 2, the two articulated frames 208 are symmetrically arranged on the straight line where the first end and the second end of the rotating part 201 are located.

[0064] Furthermore, the articulated frame 208 further includes a second through hole 2082 and a third through hole 2083. The second through hole 2082 is provided on the articulated frame 208 and is disposed close to the second connecting assembly. The second through hole 2082 is used to be hinged with the cutting arm. The third through hole 2083 is provided on the articulated frame 208 and is disposed close to the second through hole 2082. The third through hole 2083 is used to be hinged with the lifting cylinder of the cutting part. In this embodiment, the piston rod of the lifting cylinder is hinged with the third through hole 2083, and the cylinder barrel of the lifting cylinder is hinged with the cutting arm.

[0065] The present invention provides a tunnel boring machine, comprising a main body, a cutting arm, and the above-mentioned slewing mechanism, wherein the slewing mechanism is arranged on the main body, and the cutting arm is connected to the slewing mechanism.

[0066] The tunnel boring machine provided by the present invention designs the turntable 2 on the turntable mechanism as an assembled structure of at least two turntables 201, so that the assembly between the turntable 2 and the turntable 1 can be completed only by detachably connecting the at least two turntables 201 in sequence along the outer peripheral side of the turntable 1, and plugging the second plug-in part 202 into the first plug-in part 101. This can not only effectively reduce the assembly space required for assembling the turntable 2 onto the turntable 1, but also realize the rapid disassembly and assembly of the turntable 2 on the turntable 1, thereby improving the efficiency of the staff in assembling the turntable 2.

[0067] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rotary mechanism, characterized in that: include: A slewing bearing (1), the outer peripheral side of which is provided with a first plug-in portion (101); The turntable (2) comprises at least two turntable parts (201) which are detachably connected in sequence along the outer peripheral side of the turntable (1), and a second plug-in part (202) is provided on a side of the turntable part (201) close to the turntable (1); The second plug-in portion (202) is plugged and fixedly connected to the first plug-in portion (101) to connect the turntable (2) to the slewing support (1); The slewing bearing (1) comprises a fixed portion (102) and a rotating portion (103); the fixed portion (102) is annular and is used to be connected to a main body of a roadheader; the rotating portion (103) is rotatably connected to the inner side of the fixed portion (102) and comprises a connecting section protruding from the fixed portion (102); the first plug-in portion (101) is arranged on the connecting section; There are two rotating parts (201), the first ends of the two rotating parts (201) are hinged via a first connection component, and the second ends of the two rotating parts (201) are detachably connected via a second connection component.

2. The rotary mechanism according to claim 1, characterized in that: The first plug-in portion (101) comprises a first inclined surface (1011) and a second inclined surface (1012) which are arranged on the outer peripheral side of the connecting section and are arranged at an angle; The second plug-in portion (202) comprises a third inclined surface (2021) and a fourth inclined surface (2022) which are arranged at an angle; the first inclined surface (1011) abuts against the third inclined surface (2021), and the second inclined surface (1012) abuts against the fourth inclined surface (2022), so as to plug and fix the second plug-in portion (202) and the first plug-in portion (101).

3. The rotary mechanism according to claim 2, characterized in that: The cross-section of the first plug-in portion (101) is a first trapezoid, and the two sides of the first trapezoid are respectively the first inclined surface (1011) and the second inclined surface (1012); the cross-section of the second plug-in portion (202) is a second trapezoid, and the two sides of the second trapezoid are respectively the third inclined surface (2021) and the fourth inclined surface (2022).

4. The rotary mechanism according to claim 1, characterized in that: The first connection component comprises: A first connecting hole (203) is correspondingly provided at the first ends of the two rotating parts (201); The pin shaft (204) is inserted into the first connection holes (203) of the two rotating parts (201).

5. The rotary mechanism according to claim 1, characterized in that: The second connection component comprises: A connecting plate (205) is provided at the second ends of the two rotating parts (201) correspondingly, and a second connecting hole (207) is provided on the connecting plate (205); The connecting member (206) is threadedly connected to the second connecting holes (207) on the two rotating parts (201).

6. The rotary mechanism according to claim 1, characterized in that: The two rotating parts (201) are both fixedly connected with an articulated frame (208), and the articulated frame (208) comprises: The first through hole (2081) is arranged close to the first connecting assembly, and the first through hole (2081) is used for being hinged to the rotary cylinder of the cutting part.

7. The rotary mechanism according to claim 6, characterized in that: The articulated frame (208) further comprises: a second through hole (2082), arranged close to the second connecting assembly, the second through hole (2082) being used for being hingedly connected to the cutting portion; The third through hole (2083) is arranged close to the second through hole (2082), and the third through hole (2083) is used for being hinged to the lifting cylinder of the cutting part.

8. A tunnel boring machine, characterized in that: include: Body part; Cutting arm; And the rotating mechanism according to any one of claims 1 to 7, wherein the rotating mechanism is arranged on the main body, and the cutting arm is connected to the rotating mechanism.

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