A main shaft rotating mechanism of a heading machine and a working method thereof

Abstract

The application discloses a main shaft rotating mechanism of a heading machine and a working method thereof, which comprises a fixed connecting seat, a hydraulic motor, a planetary reducer, a pinion shaft, a slewing bearing inner gear rotor bearing, a slewing bearing stator and a rotating connecting seat. The upper end of the fixed connecting seat is fixedly connected with a propulsion mechanism of the heading machine, the lower end of the fixed connecting seat is fixedly connected with the slewing bearing stator, the slewing bearing inner gear rotor bearing is fixedly connected with the upper end of the rotating connecting seat, and the lower end of the rotating connecting seat is connected with a drill bit or a cutter head. The hydraulic motor is drivingly connected with the planetary reducer, the planetary reducer is installed on the fixed connecting seat, the planetary reducer is drivingly connected with the pinion shaft, the pinion shaft is drivingly connected with the inner gear of the slewing bearing inner gear rotor bearing, and the slewing bearing inner gear rotor bearing is installed in the slewing bearing stator. The main shaft rotating mechanism is designed to be light in weight, the heavy slewing bearing with an inner gear is selected as the main bearing, the overall structure is compact, the axial space occupation is small, and the impact resistance is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roadway and shaft driving, in particular to a driving machine main shaft rotating mechanism and a working method thereof. BACKGROUND

[0002] The driving machine is the main equipment for mechanized driving of roadway and shaft, and the main shaft is used to provide strong rotating power to drive the drill bit or cutting arm to break rock under the condition of stable support of the machine body.

[0003] In the prior art, in order to realize strong rotating power, the size of the main bearing and the driving device is large, and the axial space occupies a large volume, and the impact resistance of the large volume main bearing is inevitably weakened, thereby affecting the application in the shaft and roadway. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a driving machine main shaft rotating mechanism to solve the problems of large axial space occupation and weak impact resistance of the main shaft rotating mechanism in the prior art.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A driving machine main shaft rotating mechanism, comprising a fixed connection seat, a hydraulic motor, a planetary reducer, a pinion shaft, a slewing bearing inner gear rotor bearing, a slewing bearing stator and a rotating connection seat; the upper end of the fixed connection seat is fixedly connected with a driving machine propulsion mechanism, the lower end of the fixed connection seat is fixedly connected with the slewing bearing stator through bolts, the slewing bearing inner gear rotor bearing is fixedly connected with the upper end of the rotating connection seat through bolts, and the lower end of the rotating connection seat is connected with a drill bit or a cutter head; the hydraulic motor is drivingly connected with the planetary reducer, the planetary reducer is installed on the fixed connection seat, the power output end of the planetary reducer is drivingly connected with the pinion shaft, the pinion shaft is drivingly connected with the inner gear of the slewing bearing inner gear rotor bearing through gear transmission, and the slewing bearing inner gear rotor bearing is installed in the slewing bearing stator.

[0007] The above-mentioned driving machine main shaft rotating mechanism, the hydraulic motor and the planetary reducer are matched into groups, and there are two or more groups, a plurality of groups of the hydraulic motor and the planetary reducer are cooperatively driven to drive a plurality of groups of the pinion shaft, and then the slewing bearing inner gear rotor bearing is jointly driven through gear transmission to produce continuous rotation movement relative to the slewing bearing stator.

[0008] The excavating machine main shaft rotating mechanism, the fixed connection seat includes an outer cylinder and a bottom plate, the upper end of the outer cylinder is provided with an external flange, the lower end of the outer cylinder is provided with a bottom plate, the middle part of the bottom plate is a hollow structure; the excavating machine propulsion mechanism is fixedly connected with the outer cylinder through the external flange; the upper plate surface of the bottom plate is fixedly connected with the inner wall surface of the outer cylinder through the first reinforcing rib.

[0009] The excavating machine main shaft rotating mechanism, the bottom plate extends two or more reinforcing plates to the middle part, and the two or more reinforcing plates are uniformly arranged along the circumferential direction of the bottom plate; a reducer seat is fixedly installed on each reinforcing plate, the outer wall surface of the reducer seat, the upper plate surface of the reinforcing plate and the inner wall surface of the outer cylinder are fixedly connected through the second reinforcing rib; a circular hole is formed in the reinforcing plate corresponding to the opening position of the lower end of the reducer seat.

[0010] The excavating machine main shaft rotating mechanism, the reducer seat is a cylindrical structure with a diameter gradually decreasing from top to bottom, the upper end surface of the reducer seat is a first mounting plane, the opening of the reducer seat is a first mounting stop, and the lower end of the reducer seat is a second mounting stop, and the diameter of the large cylinder at the upper end of the reducer seat is greater than the diameter of the first mounting stop, the diameter of the first mounting stop is greater than the diameter of the second mounting stop; the lower end of the planetary reducer passes through the second mounting stop from the first mounting stop of the reducer seat and is flush with the reinforcing plate, and the lower plane of the mounting flange of the planetary reducer is connected with the first mounting plane through bolts.

[0011] The excavating machine main shaft rotating mechanism, the lower end of the fixed connection seat is provided with a ring groove corresponding to the position of the slewing bearing stator, the bottom of the ring groove is a second mounting plane, and the opening of the ring groove is a third mounting stop, the slewing bearing stator is embedded in the ring groove, and the upper end surface of the slewing bearing stator abuts against the second mounting plane.

[0012] The excavating machine main shaft rotating mechanism, the outer side of the slewing bearing stator is provided with a protective cover, the cross section of the protective cover is L-shaped, the upper end of the long side of the L-shaped protective cover is provided with a mounting ear, and the protective cover is threadedly connected with the bottom plate through the mounting ear; the short side of the L-shaped protective cover is adjacent to the outer wall of the rotating connection seat; a second ring groove is arranged at the short side of the L-shaped protective cover, the second ring groove has the short side of the L-shaped protective cover as a groove bottom, a rotating sealing ring is fixedly installed in the second ring groove, a gland is arranged at the opening of the second ring groove, one end of the gland is connected with the side wall of the second ring groove through bolts, and the other end of the gland is adjacent to the outer wall of the rotating connection seat.

[0013] The hydraulic motor and the planetary reducer are matched into groups, and there are 5 groups.

[0014] The working method of the main shaft rotating mechanism of the tunneling machine comprises the following steps:

[0015] (A) bolt the tunneling machine propulsion mechanism and the fixed connecting seat through the external flange plate, and bolt the drill bit or the cutter head and the mounting lug at the lower end of the rotating connecting seat;

[0016] (B) according to the on-site operation requirement, start the hydraulic motor, drive the planetary reducer to rotate the pinion shaft, and drive the rotating supporting inner tooth gear rotor bearing to produce continuous rotation relative to the rotating supporting stator through the gear transmission connection of the pinion shaft and the inner tooth gear of the rotating supporting inner tooth gear rotor bearing;

[0017] (C) the rotating supporting inner tooth gear rotor bearing is fixedly connected to the upper end of the rotating connecting seat through bolts, thereby driving the rotating connecting seat to continuously rotate, driving the drill bit or the cutter head to rotate, and realizing tunneling;

[0018] (D) when the drill bit or the cutter head is stopped or non-rotating operation, the planetary reducer is controlled to generate a large enough static torque.

[0019] The working method of the main shaft rotating mechanism of the tunneling machine is characterized in that a protective cover is arranged outside the rotating supporting stator, the cross section of the protective cover is L-shaped, the upper end of the L-shaped long side of the protective cover is provided with a mounting lug, the protective cover is screw-connected to the bottom plate through the mounting lug, the L-shaped short side of the protective cover is adjacent to the outer wall of the rotating connecting seat, a second ring groove is arranged at the L-shaped short side of the protective cover, the second ring groove takes the L-shaped short side of the protective cover as a groove bottom, a rotating sealing ring is fixedly installed in the second ring groove, a gland is arranged at the groove opening of the second ring groove, one end of the gland is screw-connected to the side wall of the second ring groove, the other end of the gland is adjacent to the outer wall of the rotating connecting seat, and the rotating sealing ring blocks dust, water and other pollutants from the outside of the main shaft of the tunneling machine, so that the rotating support is kept well lubricated.

[0020] The technical scheme of the present application has the following beneficial technical effects:

[0021] 1. The main shaft rotating mechanism is overall lightweight, a heavy rotating supporting with an inner tooth is selected as a main bearing, the overall structure is compact, the axial space occupation is small, the impact resistance is strong, and the application in the underground and the roadway is more convenient. Meanwhile, the hollow structure design is more conducive to the passage of personnel, materials and pipelines.

[0022] 2、The present application drives multiple pinion shafts by multiple hydraulic motors cooperating with reducers, and drives the rotary bearing inner gear rotor bearing (main shaft) of the tunneling machine to rotate continuously in positive and negative directions by gear transmission connection of the pinion shafts and the inner gear of the rotary bearing inner gear rotor bearing, so that the axial space occupation is small and the driving force is increased.

[0023] 3、The reinforcing plate of the extended bottom plate is arranged with reducer seats in the circumferential direction, and the middle part of the bottom plate is a hollow structure, which can be used as a passage to the drill bit part of the main body of the tunneling machine, facilitating the passage of personnel, pipelines and materials.

[0024] 4、The diameter of the first mounting stop at the opening of the upper end of the reducer seat is larger than that of the second mounting stop in the middle part, so that the planetary reducer can be accurately installed in the reducer seat, and the planetary reducer, the pinion shaft, the rotary bearing inner gear rotor and the rotary bearing stator can be accurately positioned. The reducer seat is provided with two second reinforcing ribs, which can stabilize and reinforce the reducer seat and reduce the disturbance caused by the high-speed rotation of the hydraulic motor, the planetary reducer and the pinion shaft.

[0025] 5、A protective cover is arranged outside the rotary bearing stator, the cross section of the protective cover is designed in L type structure, the upper end of the long side of the L type is fixedly connected with the fixed connection seat, and the short side of the L type is adjacent to the outer wall of the rotary connection seat; a second ring groove is arranged, a rotary sealing ring is installed in the second ring groove, and a gland is arranged at the slot, which can not hinder the rotation of the rotary connection seat, and can block dust, water and other pollutants from the outside of the main shaft of the tunneling machine, so that the rotary bearing inner gear rotor bearing and the rotary bearing stator can maintain good lubrication. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure diagram of the main shaft rotating mechanism of the tunneling machine;

[0027] Figure 2 The structure diagram of the main shaft rotating mechanism of the tunneling machine;

[0028] Figure 3 The local enlarged view of the protective cover and the rotary bearing stator of the main shaft rotating mechanism of the tunneling machine;

[0029] Figure 4 The structure diagram of the fixed connection seat of the main shaft rotating mechanism of the tunneling machine;

[0030] Figure 5 The structure diagram of the fixed connection seat of the main shaft rotating mechanism of the tunneling machine;

[0031] Figure 6 Figure 5 The local enlarged view of the fixed connection seat of the main shaft rotating mechanism of the tunneling machine at A.

[0032] The reference numerals in the figure are as follows: 1-Fixed connecting seat; 2-Hydraulic motor; 3-Planetary reducer; 4-Pin gear shaft; 5-Slewing bearing internal gear rotor bearing; 6-Slewing bearing stator; 7-Protective cover; 8-Rotary sealing ring; 9-Gland; 10-Rotary connecting seat; 11-Second annular groove; 101-First reinforcing rib; 102-External flange; 103-Second reinforcing rib; 104-Outer cylinder; 105-Reducer seat; 106-Base plate; 107-First mounting plane; 108-First mounting stop; 109-Second mounting stop; 110-Second mounting plane; 111-Third mounting stop; 112-Reinforcing plate. Detailed Implementation

[0033] like Figure 1 and Figure 2 The tunneling machine main shaft rotation mechanism shown includes a fixed connecting seat 1, a hydraulic motor 2, a planetary reducer 3, a pinion shaft 4, a slewing bearing internal gear rotor bearing 5, a slewing bearing stator 6, and a rotating connecting seat 10. The upper end of the fixed connecting seat 1 is fixedly connected to the tunneling machine's propulsion mechanism, and the lower end of the fixed connecting seat 1 is fixedly connected to the slewing bearing stator 6 by bolts. The slewing bearing internal gear rotor bearing 5 is fixedly connected to the upper end of the rotating connecting seat 10 by bolts, and the lower end of the rotating connecting seat 10 is connected to a drill bit or cutterhead. The hydraulic motor 2 is driven by the planetary reducer 3, which is mounted on the fixed connecting seat 1. The power output end of the planetary reducer 3 is driven by the pinion shaft 4, and the pinion shaft 4 is connected to the internal gear of the slewing bearing internal gear rotor bearing 5 via gear transmission. The slewing bearing internal gear rotor bearing 5 is mounted inside the slewing bearing stator 6.

[0034] The hydraulic motor 2 and the planetary reducer 3 are grouped together, and there are two or more groups. Multiple groups of hydraulic motor 2 and planetary reducer 3 work together to drive multiple groups of pinion shafts 4, and then drive the slewing bearing internal gear rotor bearing 5 through gear transmission, so that the slewing bearing internal gear rotor bearing 5 generates continuous forward and reverse rotation relative to the slewing bearing stator 6.

[0035] In this embodiment, the hydraulic motor 2 and the planetary reducer 3 are in 5 groups, evenly arranged and installed on the reinforcing plate 12 of the fixed connecting seat 1.

[0036] According to the field operation requirement, the hydraulic motor 2 is started, the hydraulic motor 2 drives the planetary reducer 3 to drive the pinion shaft 4 to rotate, the pinion shaft 4 is connected with the inner gear of the slewing bearing inner gear rotor bearing 5 through gear transmission, so that the slewing bearing inner gear rotor bearing 5 generates positive and negative continuous rotary motion relative to the slewing bearing stator 6; the slewing bearing inner gear rotor bearing 5 is fixedly connected with the upper end of the rotary connecting seat 10 through bolts, and then drives the rotary connecting seat 10 to rotate continuously, drives the drill bit or cutter head to rotate, realizes the tunneling; at the same time, when the drill bit is stopped or not rotating, the planetary reducer 3 is operated to brake, and a large enough static torque can be generated.

[0037] In order to realize the stable installation of the slewing bearing inner gear rotor bearing 5 and the slewing bearing stator 6, the fixed connecting seat and the rotary connecting seat are optimized and designed.

[0038] The fixed connecting seat 1 comprises an outer cylinder 104 and a bottom plate 106, the upper end of the outer cylinder 104 is provided with an external flange plate 102, the tunneling machine propulsion mechanism is fixedly connected with the outer cylinder 104 through the external flange plate 102, and the external flange plate 102 is arranged to facilitate the assembly between the tunneling machine propulsion mechanism and the fixed connecting seat 1 of the application.

[0039] The lower end of the outer cylinder 104 is provided with the bottom plate 106, the middle part of the bottom plate 106 is a hollow structure; the upper plate surface of the bottom plate 106 is fixedly connected with the inner wall surface of the outer cylinder 104 through the first reinforcing rib 101. The bottom plate 106 extends five reinforcing plates 112 to the middle part, the reinforcing plates 112 are uniformly arranged along the circumferential direction of the bottom plate 106, and the middle part of the reinforcing plate is not connected, that is, the middle part is also a hollow structure. The hollow structure can be used as a passage from the main body of the tunneling machine to the drill bit part, and personnel, pipelines and materials can pass through conveniently.

[0040] A reducer seat 105 is fixedly installed on each of the reinforcing plates 112, the outer wall surface of the reducer seat 105, the upper plate surface of the reinforcing plate 112 and the inner wall surface of the outer cylinder 104 are fixedly connected through the second reinforcing rib 103; the reinforcing plate 112 is provided with a circular hole corresponding to the opening position of the lower end of the reducer seat 105. Each reducer seat 105 is provided with two second reinforcing ribs, so that the reducer seat 105 can be stably reinforced, and the disturbance caused by the high-speed rotation of the hydraulic motor, the planetary reducer and the pinion shaft is reduced.

[0041] The reducer seat 105 is a cylindrical structure with diameter decreasing from top to bottom, the upper end surface of the reducer seat 105 is provided as a first mounting plane 107, the opening of the reducer seat 105 is provided as a first mounting stop 108, the small cylinder at the lower end of the reducer seat 105 is a second mounting stop 109, and the diameter of the large cylinder at the upper end of the reducer seat 105 is larger than the diameter of the first mounting stop 108, the diameter of the first mounting stop 108 is larger than the diameter of the second mounting stop 109; the lower end of the planetary reducer 3 passes through the first mounting stop 108 of the reducer seat 105 and the second mounting stop 109, and is flush with the reinforcing plate 112, and the mounting flange plate of the planetary reducer 3 is connected with the first mounting plane 107 by bolts. The first mounting stop 108 and the second mounting stop 109 are arranged in the inner side wall of the reducer seat 105, so that the planetary reducer 3 can be accurately installed in the reducer seat 105, and the accurate positioning between the pinion shaft 4, the slewing bearing inner gear rotor bearing 5 and the slewing bearing stator 6 is realized, and the efficiency of the slewing bearing is improved.

[0042] In order to realize the cooperation and installation of the slewing bearing stator 6 and the fixed connection seat 1, the lower end of the fixed connection seat 1 of the application is provided with a ring groove at the position corresponding to the slewing bearing stator 6, the bottom of the ring groove is a second mounting plane 110, and the opening of the ring groove is a third mounting stop 111, so that the slewing bearing stator 6 can be embedded in the ring groove, and the upper end surface of the slewing bearing stator 6 abuts against the second mounting plane 110, realizing the stable and accurate embedding of the slewing bearing stator 6 in the ring groove and the bolted connection.

[0043] In order to prevent the interference of dust, water and other pollutants outside the main shaft of the heading machine, the application is provided with a protective cover 7 outside the slewing bearing stator 6; the cross section of the protective cover 7 is designed as an L-shaped structure: the upper end of the long side of the L-shaped protective cover 7 is provided with a mounting lug, and the protective cover 7 is threadedly connected with the bottom plate 106 through the mounting lug; the short side of the L-shaped protective cover 7 is adjacent to the outer wall of the rotary connection seat 10; the short side of the L-shaped protective cover 7 is provided with a second ring groove 11, the second ring groove 11 has the short side of the L-shaped protective cover 7 as the groove bottom, a rotary sealing ring 8 is fixedly installed in the second ring groove 11, a gland 9 is arranged at the opening of the second ring groove 11, one end of the gland 9 is connected with the side wall of the second ring groove 11 through a bolt, and the other end of the gland 9 is adjacent to the outer wall of the rotary connection seat 10. The second ring groove is arranged, the rotary sealing ring is installed in the second ring groove, and the gland is arranged at the opening of the second ring groove, which can not hinder the rotation of the rotary connection seat on one hand, and can block the interference of dust, water and other pollutants from outside the main shaft of the heading machine on the other hand, so that the slewing bearing inner gear rotor bearing and the slewing bearing stator can maintain good lubrication.

[0044] The specific working method of the main shaft rotating mechanism of the tunneling machine is as follows:

[0045] A, connecting the tunneling machine propulsion mechanism, the main shaft rotating mechanism and the drill bit or cutter head: the tunneling machine propulsion mechanism is bolted to the external flange plate 102 through the fixed connection seat 1, and the drill bit or cutter head is bolted to the mounting lug at the lower end of the rotating connection seat 10;

[0046] B, according to the on-site operation requirements, start the hydraulic motor 2, the five groups of hydraulic motors 2 drive the planetary reducer 3 to drive the pinion shaft 4 to rotate, the five groups of pinion shafts 4 are connected with the internal gear of the slewing bearing inner gear rotor bearing 5 through gear transmission, so that the slewing bearing inner gear rotor bearing 5 produces positive and negative continuous rotary motion relative to the slewing bearing stator 6; a plurality of groups of said hydraulic motor and said planetary reducer cooperate to drive the pinion shaft to realize small axial space occupation and increase driving force.

[0047] C, the slewing bearing inner gear rotor bearing 5 is fixedly connected with the upper end of the rotating connection seat 10 through bolts, and then drives the rotating connection seat 10 to rotate continuously, drives the drill bit or cutter head to rotate, and realizes tunneling;

[0048] D, when the drill bit or cutter head is stopped or non-rotating operation, the planetary reducer 3 is controlled to brake to generate a large enough static torque.

[0049] Obviously, the above embodiments are only examples for clearly illustrating, and not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and cannot be exhaustive of all embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the patent application claims.

Claims

1. A main shaft rotating mechanism of a heading machine, characterized by, The application relates to a rotary drive mechanism for a roadheader, which comprises a fixed connecting seat (1), a hydraulic motor (2), a planetary reducer (3), a pinion shaft (4), a slewing bearing inner gear rotor bearing (5), a slewing bearing stator (6) and a rotary connecting seat (10); the upper end of the fixed connecting seat (1) is fixedly connected with a roadheader propulsion mechanism; the lower end of the fixed connecting seat (1) is fixedly connected with the slewing bearing stator (6) through bolts; the slewing bearing inner gear rotor bearing (5) is fixedly connected with the upper end of the rotary connecting seat (10) through bolts; the lower end of the rotary connecting seat (10) is connected with a drill bit or a cutter head; the hydraulic motor (2) is drivingly connected with the planetary reducer (3); the planetary reducer (3) is installed on the fixed connecting seat (1); the power output end of the planetary reducer (3) is drivingly connected with the pinion shaft (4); the pinion shaft (4) is drivingly connected with the inner gear of the slewing bearing inner gear rotor bearing (5) through gear transmission; and the slewing bearing inner gear rotor bearing (5) is installed in the slewing bearing stator (6). The hydraulic motor (2) and the planetary reducer (3) are matched into groups, and there are two or more groups; a plurality of groups of the hydraulic motor (2) and the planetary reducer (3) are matched to drive a plurality of groups of the pinion shaft (4), and then the slewing bearing inner gear rotor bearing (5) is jointly driven through gear transmission, so that the slewing bearing inner gear rotor bearing (5) produces continuous rotation in the positive and negative directions relative to the slewing bearing stator (6). The fixed connecting seat (1) comprises an outer cylinder (104) and a bottom plate (106); the upper end of the outer cylinder (104) is provided with an external flange (102); the lower end of the outer cylinder (104) is provided with the bottom plate (106); the middle part of the bottom plate (106) is a hollow structure; the roadheader propulsion mechanism is fixedly connected with the outer cylinder (104) through the external flange (102); the upper plate surface of the bottom plate (106) is fixedly connected with the inner wall surface of the outer cylinder (104) through a first reinforcing rib (101). The outer side of the slewing bearing stator (6) is provided with a protective cover (7); the cross section of the protective cover (7) is L-shaped; the upper end of the L-shaped long side of the protective cover (7) is provided with a mounting lug; the protective cover (7) is threadedly connected with the bottom plate (106) through the mounting lug; the L-shaped short side of the protective cover (7) is adjacent to the outer wall of the rotary connecting seat (10); a second ring groove (11) is arranged at the L-shaped short side of the protective cover (7); the second ring groove (11) takes the L-shaped short side of the protective cover (7) as a groove bottom; a rotary sealing ring (8) is fixedly installed in the second ring groove (11); a gland (9) is arranged at the groove opening of the second ring groove (11); one end of the gland (9) is connected with the sidewall of the second ring groove (11) through bolts; and the other end of the gland (9) is adjacent to the outer wall of the rotary connecting seat (10).

2. A main shaft rotating mechanism of a heading machine according to claim 1, characterized in that, The bottom plate (106) extends two or more reinforcing plates (112) to the middle part, the two or more reinforcing plates (112) are uniformly arranged along the circumferential direction of the bottom plate (106), a reducer seat (105) is fixedly installed on each reinforcing plate (112), the outer wall surface of the reducer seat (105), the upper plate surface of the reinforcing plate (112) and the inner wall surface of the outer cylinder (104) are fixedly connected through a second reinforcing rib (103), and a circular hole is formed in the reinforcing plate (112) corresponding to the opening position of the lower end of the reducer seat (105).

3. A main shaft rotating mechanism of a heading machine according to claim 2, characterized in that, The reducer seat (105) is a cylindrical structure with a diameter gradually decreasing from top to bottom, the upper end surface of the reducer seat (105) is provided as a first mounting plane (107), the opening of the reducer seat (105) is provided as a first mounting stop (108), the small cylinder at the lower end of the reducer seat (105) is provided as a second mounting stop (109), the diameter of the large cylinder at the upper end of the reducer seat (105) is greater than the diameter of the first mounting stop (108), the diameter of the first mounting stop (108) is greater than the diameter of the second mounting stop (109), the lower end of the planetary reducer (3) passes through the second mounting stop (109) from the first mounting stop (108) of the reducer seat (105) and is flush with the reinforcing plate (112), and the mounting flange lower plane of the planetary reducer (3) is matched with the first mounting plane (107) and is fixedly connected through bolts.

4. The main shaft rotating mechanism of a tunneling machine according to claim 1, characterized in that, The lower end of the fixed connection seat (1) is provided with a ring groove corresponding to the position of the slewing bearing stator (6), the bottom of the ring groove is a second mounting plane (110), the opening of the ring groove is a third mounting stop (111), the slewing bearing stator (6) is embedded in the ring groove, and the upper end surface of the slewing bearing stator (6) abuts against the second mounting plane (110).

5. The main shaft rotating mechanism of a tunneling machine according to claim 1, characterized in that, The hydraulic motor (2) and the planetary reducer (3) are matched into groups, and there are five groups.

6. A method of operating a main shaft rotating mechanism of a heading machine according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: (A) bolt connecting the propulsion mechanism of the tunneling machine and the fixed connection seat (1) through the external flange (102), and bolt connecting the drill bit or cutter head and the mounting lug at the lower end of the rotary connection seat (10); (B) starting the hydraulic motor (2) according to the on-site operation requirements, the hydraulic motor (2) driving the planetary reducer (3) to drive the pinion shaft (4) to rotate, the pinion shaft (4) and the inner gear of the slewing bearing inner gear rotor bearing (5) being connected through gear transmission, so that the slewing bearing inner gear rotor bearing (5) produces continuous rotation relative to the slewing bearing stator (6); (C) the slewing bearing inner gear rotor bearing (5) is fixedly connected to the upper end of the rotary connection seat (10) through bolts, thereby driving the rotary connection seat (10) to continuously rotate, driving the drill bit or cutter head to rotate, and realizing tunneling; (D) when the drill bit or cutter head is stopped or non-rotating, the planetary reducer (3) is controlled to brake to generate a large enough static torque.

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