Cutting part and heading machine with same

Abstract

The invention relates to the technical field of tunneling equipment, in particular to a cutting part which at least comprises a cutting roller and a cutting tooth assembly, and the cutting tooth assembly comprises a fixed tooth holder, cutting teeth and a dismounting device; the dismounting and mounting device comprises a mounting shell arranged below the fixed tooth holder, a stopping assembly arranged in the mounting shell, a stopping assembly arranged in the mounting shell and an adjusting assembly used for driving the rotating inner disc to rotate. According to the cutting part, the axial movement freedom degree of the cutting teeth in the fixed tooth holder is limited by the cutting tooth assembly of the cutting part through the dismounting and mounting device, and the stopping assembly of the dismounting and mounting device is located in the mounting shell, so that the stopping assembly is prevented from being damaged by hard objects such as external coal and rock debris. The cutting part has a non-return function, the non-return assembly can prevent the rotating inner disc from rotating clockwise, and the situation that in the construction process, the rotating inner disc rotates improperly due to vibration, and finally the stopping assembly loses efficacy is avoided.

Description

Technical Field

[0001] The present application relates to the field of mining machinery, and in particular to a cutting part and a tunneling machine having the same. Background Art

[0002] The cutting unit is a key component of coal mining machines and roadheaders, and is mainly responsible for the cutting and crushing of coal and rock. Its main functions include breaking coal or rock from the working face through the cutting teeth and loading it into the conveying system. The cutting unit is usually composed of cutting barrels, transmission devices, reducers, cutting motors and other components, which work together to achieve efficient cutting operations.

[0003] The cutting tooth assembly arranged along the spiral direction on the cutting barrel is the part that directly contacts the coal and rock, and usually includes a cutting tooth seat fixed on the cutting tooth assembly and a cutting tooth rotatably arranged on the cutting tooth seat. In order to limit the axial movement of the cutting tooth, an annular groove is usually arranged on the outer wall of the cutting tooth and a C-shaped metal clamp is clamped to fix it. Due to the extremely harsh working environment of the cutting tooth assembly, the C-shaped clamp is often damaged, causing the cutting tooth to move or even fall off. Summary of the invention

[0004] A cutting part comprises at least a cutting roller and a cutting tooth assembly arranged on the cutting roller, wherein the cutting tooth assembly comprises:

[0005] A fixed gear seat, fixedly arranged on the cutting roller;

[0006] The cutting tooth at least comprises a cutting cone, a rotating cylinder provided on the cutting cone and rotatably arranged in a fixed tooth seat, and a limiting ring groove provided on the rotating cylinder;

[0007] The disassembly and assembly device is arranged at the rear end of the fixed tooth seat, and is used to rotatably arrange the cutting tooth in the fixed tooth seat, and the disassembly and assembly device includes:

[0008] An installation housing is arranged below the fixed gear seat;

[0009] A rotating inner disk is disposed in the mounting housing;

[0010] A stopper assembly is arranged in the mounting housing, the stopper assembly is driven by the rotating inner disk to swing, and the stopper assembly is inserted into the limiting ring groove to limit the axial freedom of the cutting teeth;

[0011] The adjusting component is used to drive the rotating inner disk to rotate.

[0012] As a further implementation:

[0013] The mounting housing comprises a cylindrical disc, a central circular hole arranged at the upper end of the cylindrical disc, a circular inner cavity arranged below the central circular hole, and lugs with holes uniformly distributed in the circumferential direction on the lower half of the inner wall of the circular inner cavity;

[0014] The rotating inner disk comprises an annular base rotatably arranged in the circular inner cavity, active plug rods uniformly distributed circumferentially on the upper end surface of the annular base, incomplete arc teeth uniformly distributed circumferentially on the outer edge of the upper end surface of the annular base, and adjusting arc holes uniformly distributed circumferentially in the annular base and corresponding to the incomplete arc teeth one by one. The rotating inner disk also comprises an arc-shaped outer groove uniformly distributed circumferentially on the outer wall of the annular base and corresponding to the lugs with holes one by one, an arc-shaped core rod disposed in the arc-shaped outer groove and plugged and matched with the corresponding lugs with holes, and a return compression spring wound around the arc-shaped core rod for driving the rotating inner disk to rotate counterclockwise;

[0015] The stopper assembly is arranged at the position where the circular inner cavity is located above the annular base, the stopper assembly corresponds to the active plug rod one by one, and the stopper assembly comprises a stopper core shaft arranged on the upper end surface of the circular inner cavity, a stopper main arm rotatably arranged on the stopper core shaft, a limit arc plate arranged at the stop end of the stopper main arm for inserting into the limit ring groove, and a driven slot arranged on the stopper main arm, and the driven slot is plug-fitted with the active plug rod;

[0016] The adjustment components correspond to the adjustment arc holes one by one, and the adjustment components include an adjustment longitudinal hole arranged in a circular inner cavity, an adjustment gear shaft rotatably arranged in the adjustment longitudinal hole and passing through the corresponding adjustment arc hole, and a driving gear arranged on the adjustment gear shaft and meshing with the corresponding incomplete arc teeth.

[0017] As a further implementation:

[0018] The cutting part also includes a non-return component, which includes an inclined countersunk hole arranged in the upper front half of the annular base, the inclined countersunk hole is inclined from the left rear to the right front, a non-return core shaft is rotatably provided in the inclined countersunk hole, a non-return pendulum block is swingably formed on the non-return core shaft and is arranged in the inclined countersunk hole, a friction gasket is provided at the stop end of the lower half of the non-return pendulum block, a pressure gasket is provided on the right side of the lower half of the non-return pendulum block, and a side arc hole is also provided on the mounting shell, and the height position of the side arc hole corresponds to the upper half of the non-return pendulum block.

[0019] Beneficial effects:

[0020] The cutting part described in this case has a cutting tooth assembly that limits the axial movement freedom of the cutting teeth in a fixed tooth seat through a disassembly and assembly device, and the stop component of the disassembly and assembly device is located inside the mounting shell to prevent it from being damaged by hard objects such as external coal and rock debris.

[0021] The cutting part described in this case is easy to operate. It only needs to press the anti-return component to unlock the rotational freedom of the rotating inner disk, and rotate the adjustment component and the rotating inner disk to achieve the synchronous swinging of the circumferentially evenly distributed stop components and the insertion and locking of the cutting teeth.

[0022] The cutting part described in this case has a non-return function. The non-return component can prohibit the rotating inner disk from rotating clockwise, thereby avoiding the situation in which the rotating inner disk rotates improperly due to vibration during the construction process and eventually causes the stop component to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an embodiment of a tunnel boring machine in the prior art.

[0024] Figure 2 It is a schematic diagram of an embodiment of a cutting part in the prior art.

[0025] Figure 3 It is a schematic diagram of an embodiment of the cutting tooth assembly described in this case.

[0026] Figure 4 It is a front view of an implementation of the cutting tooth assembly described in this case.

[0027] Figure 5 It is a front view of an embodiment of the cutting tooth described in this case.

[0028] Figure 6 yes Figure 4 A cross-sectional view of section AA in one state.

[0029] Figure 7 yes Figure 4 Cross-sectional view of section AA in another state.

[0030] Figure 8 It is a partial cross-sectional view of an embodiment of a mounting housing.

[0031] Fig. 9 It is a cross-sectional view of an embodiment of a rotating inner disk.

[0032] Fig.10 It is a schematic diagram of an embodiment of a stop assembly.

[0033] Fig.11 yes Fig. 9 Enlarged schematic diagram of part B in the middle.

[0034] Fig.12 yes Figure 7 A cross-sectional view of an embodiment of the CC section. Fig.13 It is a schematic diagram of an embodiment of a non-return pendulum block, a friction gasket, and a pressure gasket.

[0035] In the figure:

[0036] 9. cutting part, 91. cutting roller, 92. cutting tooth assembly;

[0037] 8.Fix the gear seat;

[0038] 7. cutting teeth, 71. cutting cone, 72. rotating cylinder, 73. limiting ring groove;

[0039] 6. Disassembly and assembly device;

[0040] 1. Installation shell, 11. Cylindrical disc, 12. Central circular hole, 13. Circular inner cavity, 14. Lug with hole, 15. Side arc hole;

[0041] 2. Rotating inner disk, 21. Ring foundation, 22. Active insertion rod, 23. Incomplete arc teeth, 24. Adjusting arc hole, 25. Arc outer groove, 26. Arc core rod, 27. Reset compression spring;

[0042] 3. Stop assembly, 31. Stop mandrel, 32. Stop main arm, 33. Limit arc plate, 34. Driven slot;

[0043] 4. Adjustment assembly, 41. Adjustment longitudinal hole, 42. Adjustment gear shaft, 43. Driving gear;

[0044] 5. Check assembly, 51. Inclined countersunk hole, 52. Check mandrel, 53. Check pendulum block, 54. Friction gasket, 55. Pressure gasket. DETAILED DESCRIPTION

[0045] A cutting part, comprising at least a cutting roller 91 and a cutting tooth assembly 92 arranged on the cutting roller 91, wherein the cutting tooth assembly 92 comprises:

[0046] A fixed gear holder 8 is fixedly arranged on the cutting roller 9;

[0047] The cutting tooth 7 at least comprises a cutting cone portion 71, a rotating cylinder 72 provided on the cutting cone portion 71 and rotatably disposed in the fixed tooth seat 8, and a limiting ring groove 73 provided on the rotating cylinder 72;

[0048] The disassembly and assembly device 6 is arranged at the rear end of the fixed tooth seat 8, and is used to rotatably arrange the cutting tooth 7 in the fixed tooth seat 8. The disassembly and assembly device 6 includes:

[0049] An installation housing 1 is arranged below the fixed gear seat 8;

[0050] The rotating inner disk 2 is arranged in the mounting housing 1;

[0051] The stopper assembly 3 is arranged in the mounting housing 1, and the stopper assembly 3 is driven by the rotating inner disk 2 to swing, and the stopper assembly 3 is inserted into the limiting ring groove 73 to complete the axial freedom restriction of the cutting tooth 7;

[0052] The adjusting assembly 4 is used to drive the rotating inner disk 2 to rotate.

[0053] As a further implementation:

[0054] The mounting housing 1 comprises a cylindrical body 11, a central circular hole 12 disposed at the upper end of the cylindrical body 11, a circular inner cavity 13 disposed below the central circular hole 12, and lugs 14 with holes uniformly distributed in the circumferential direction on the lower half of the inner wall of the circular inner cavity 13;

[0055] The rotating inner disk 2 includes an annular base 21 rotatably arranged in the circular inner cavity 13, an active plug rod 22 uniformly distributed circumferentially on the upper end surface of the annular base 21, incomplete arc teeth 23 uniformly distributed circumferentially on the outer edge of the upper end surface of the annular base 21, and adjusting arc holes 24 uniformly distributed circumferentially in the annular base 21 and corresponding to the incomplete arc teeth 23. The rotating inner disk 2 also includes an arc-shaped outer groove 25 uniformly distributed circumferentially on the outer wall of the annular base 21 and corresponding to the perforated lugs 14, an arc-shaped core rod 26 arranged in the arc-shaped outer groove 25 and plugged with the corresponding perforated lug 14, and a return compression spring 27 arranged around the arc-shaped core rod 26 for driving the rotating inner disk 2 to rotate counterclockwise.

[0056] The stopper assembly 3 is arranged at the position where the circular inner cavity 13 is located above the annular base 21, and the stopper assembly 3 corresponds to the active plug rod 22 one by one. The stopper assembly 3 includes a stopper core shaft 31 arranged on the upper end surface of the circular inner cavity 13, a stopper main arm 32 rotatably arranged on the stopper core shaft 31, a limit arc plate 33 arranged at the stop end of the stopper main arm 32 for inserting into the limit ring groove 73, and a driven slot 34 arranged on the stopper main arm 32, and the driven slot 34 is plugged and matched with the active plug rod 22;

[0057] The adjusting assembly 4 corresponds to the adjusting arc hole 24 one by one, and the adjusting assembly 4 includes an adjusting longitudinal hole 41 arranged in the circular inner cavity 13, an adjusting gear shaft 42 rotatably arranged in the adjusting longitudinal hole 41 and passing through the corresponding adjusting arc hole 24, and a driving gear 43 arranged on the adjusting gear shaft 42 and meshing with the corresponding incomplete arc tooth 23.

[0058] As a further implementation:

[0059] The cutting part also includes a non-return component 5, which includes an inclined countersunk hole 51 arranged in the upper front half of the annular foundation 21, and the inclined countersunk hole 51 is inclined from the left rear to the right front. A non-return core shaft 52 is rotatably provided in the inclined countersunk hole 51, and a non-return pendulum block 53 is swingably formed on the non-return core shaft 52 and arranged in the inclined countersunk hole 51. A friction gasket 54 is provided at the stop end of the lower half of the non-return pendulum block 53, and a pressure gasket 55 is provided on the right side of the lower half of the non-return pendulum block 53. A side arc hole 15 is also provided on the mounting shell 1, and the height position of the side arc hole 15 corresponds to the upper half of the non-return pendulum block 53.

[0060] Furthermore, the adjustment arc hole 24 is coaxially arranged with the cylindrical disk body 11 .

[0061] Furthermore, a straight slot or a cross slot is provided below the adjusting gear shaft 42 of any adjusting component 4 .

[0062] Furthermore, three adjusting arc holes 24 are provided.

[0063] Furthermore, three active insertion rods 22 are provided.

[0064] Furthermore, the driven slot 34 is arranged along the length direction of the blocking main arm 32 .

[0065] It should be noted that the friction end block 54 and the pressure end block 55 are made of soft wear-resistant material.

[0066] The cutting part provides a solution for effectively fixing the cutting teeth 7 in the fixed tooth seat 8, and the specific implementation method is as follows:

[0067] Step 1, press the anti-return component 5 to unlock the rotational freedom of the rotating inner disk 2:

[0068] Pass a first tool (such as a screwdriver) through the side arc hole 15 and abut it against the upper half of the anti-return swing block 53;

[0069] The far end of the anti-return swing block 53 rotates clockwise and squeezes the pressure pad 55, and the friction end block 54 is out of contact with the inner wall of the central circular hole 12, unlocking the rotational freedom of the rotating inner disk 2;

[0070] Step 2, the stopper assembly 3 retracts:

[0071] Use a second tool to rotate the active gear 43 and the adjusting gear shaft 42, and the adjusting gear shaft 42 drives the incomplete arc teeth 23, the annular base 21, and the active insertion rod 22 to overcome the damping of 27 and rotate clockwise;

[0072] The active insertion rod 22 acts on the corresponding driven slot 34 to drive the stop assembly 3 to rotate around the stop mandrel 31, and the limit arc plate 33 deflects outward to facilitate the insertion of the cutting tooth 7;

[0073] The cutting tooth 7 is passed from top to bottom through the fixed tooth seat 8, the central circular hole 12, and the circular inner cavity 13;

[0074] Pull out the first tool;

[0075] Step 3, rotate inner disk 2 to reset:

[0076] The reset compression spring 27 acts on the annular base 21 and drives the rotating inner disk 2 to rotate counterclockwise and reset, and the limiting arc plate 33 deflects inward and inserts into the limiting ring groove 73, thereby limiting the axial movement freedom of the cutting tooth 7;

[0077] At the same time, during the counterclockwise rotation of the rotating inner disk 2, a limited friction force is generated between the friction end block 54 and the central circular hole 12 but does not affect the rotation of the rotating inner disk 2;

[0078] Step 4, posture lock:

[0079] When the rotating inner disk 2 tends to rotate clockwise, it pushes the anti-return block 53 to rotate counterclockwise through the friction end block 54. However, the counterclockwise rotation of the anti-return block 53 causes the friction force and extrusion stress between it and the inner wall of the central circular hole 12 to increase sharply, thereby realizing the posture locking of the rotating inner disk 2.

[0080] This case also discloses a tunnel boring machine which adopts the above-mentioned cutting part.

Claims

1. A cutting part, characterized in that: The cutting portion (9) comprises at least a cutting roller (91) and a cutting tooth assembly (92) arranged on the cutting roller (91), wherein the cutting tooth assembly (92) comprises: A fixed tooth seat (8) fixedly arranged on the cutting roller (91); The cutting tooth (7) at least comprises a cutting cone (71), a rotating cylinder (72) provided on the cutting cone (71) and rotatably arranged in a fixed tooth seat (8), and a limiting ring groove (73) provided on the rotating cylinder (72); A disassembly and assembly device (6) is arranged at the rear end of the fixed tooth seat (8) and is used to rotatably arrange the cutting tooth (7) in the fixed tooth seat (8); The disassembly and assembly device (6) comprises: A mounting housing (1) is arranged below the fixed gear seat (8); A rotating inner disk (2) is arranged inside the mounting outer shell (1); A stopper assembly (3) is arranged in the mounting housing (1), the stopper assembly (3) is driven by the rotating inner disk (2) to swing, and the stopper assembly (3) is inserted into the limiting ring groove (73) to limit the axial freedom of the cutting tooth (7); The adjusting assembly (4) is used to drive the rotating inner disk (2) to rotate.

2. A cutting portion according to claim 1, characterized in that: The mounting housing (1) comprises a cylindrical disk body (11), a central circular hole (12) provided at the upper end of the cylindrical disk body (11), a circular inner cavity (13) provided below the central circular hole (12), and lugs (14) with holes evenly distributed in the circumferential direction on the lower half of the inner wall of the circular inner cavity (13); The rotating inner disk (2) comprises an annular base (21) rotatably arranged in the circular inner cavity (13), an active plug rod (22) uniformly distributed circumferentially on the upper end surface of the annular base (21), incomplete arc teeth (23) uniformly distributed circumferentially on the outer edge of the upper end surface of the annular base (21), and adjusting arc holes (24) uniformly distributed circumferentially in the annular base (21) and corresponding one-to-one with the incomplete arc teeth (23). The rotating inner disk (2) also comprises an arc-shaped outer groove (25) uniformly distributed circumferentially on the outer wall of the annular base (21) and corresponding one-to-one with the hole lug (14), an arc-shaped core rod (26) arranged in the arc-shaped outer groove (25) and plugged with the corresponding hole lug (14), and a return compression spring (27) arranged around the arc-shaped core rod (26) for driving the rotating inner disk (2) to rotate counterclockwise. The stopping assembly (3) is arranged at a position above the annular base (21) in the circular inner cavity (13), and the stopping assembly (3) corresponds to the active plug rod (22) one by one. The stopping assembly (3) comprises a stopping core shaft (31) arranged on the upper end surface of the circular inner cavity (13), a stopping main arm (32) rotatably arranged on the stopping core shaft (31), a limiting arc plate (33) arranged at the stop end of the stopping main arm (32) for inserting into the limiting ring groove (73), and a driven slot (34) arranged on the stopping main arm (32), and the driven slot (34) is plug-fitted with the active plug rod (22); The adjustment assembly (4) corresponds to the adjustment arc hole (24) one by one, and comprises an adjustment longitudinal hole (41) arranged in the circular inner cavity (13), an adjustment gear shaft (42) rotatably arranged in the adjustment longitudinal hole (41) and passing through the corresponding adjustment arc hole (24), and a driving gear (43) arranged on the adjustment gear shaft (42) and meshing with the corresponding incomplete arc tooth (23).

3. A cutting portion according to claim 2, characterized in that: The invention also comprises a non-return assembly (5), wherein the non-return assembly (5) comprises an inclined countersunk hole (51) arranged in the front upper half of the annular base (21), the inclined countersunk hole (51) being inclined from the left rear to the right front, a non-return core shaft (52) being rotatably arranged in the inclined countersunk hole (51), a non-return swing block (53) being swingably arranged in the inclined countersunk hole (51) being formed on the non-return core shaft (52), a friction gasket (54) being arranged at the stop end of the lower half of the non-return swing block (53), a pressure gasket (55) being arranged on the right side of the lower half of the non-return swing block (53), and a side arc hole (15) being arranged on the mounting shell (1), the height position of the side arc hole (15) corresponding to the upper half of the non-return swing block (53).

4. A cutting portion according to claim 3, characterized in that: The adjustment arc hole (24) is coaxially arranged with the cylindrical disk body (11).

5. A cutting portion according to claim 4, characterized in that: A straight or cross slot is provided below the adjusting gear shaft (42) of any adjusting component (4).

6. A cutting portion according to claim 5, characterized in that: The regulating arc holes (24) are provided with three.

7. A cutting portion according to claim 6, characterized in that: The active insertion rods (22) are provided with three.

8. A cutting portion according to claim 7, characterized in that: The driven slot (34) is arranged along the length direction of the blocking main arm (32).

9. A roadheader, characterized in that: The invention has a cutting portion as claimed in any one of claims 1 to 8.

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