Multi-mode vibration cutting device with external excitation mechanism

Abstract

The invention discloses a multi-mode vibration cutting device with an external excitation mechanism, and belongs to the technical field of structural design of cutting parts of rock-soil tunneling equipment. According to the multi-mode vibration cutting device disclosed by the invention, the two groups of mutually symmetrical excitation devices are arranged on the cutting component, required excitation force is provided for the cutting device, and the phases of the two groups of excitation devices are changed, so that various forms of vibration can be realized; the cutting device only needs to be assembled at the driving main shaft, the output shaft of the speed reducer is matched with the spline of the driving main shaft, and one end of the driving main shaft is matched with the internal spline of the cutting device, so that the rotation of the cutting device is realized; the cutting device can improve the rock breaking efficiency under the assistance of vibration, and the device is easy to manufacture and assemble and low in manufacturing cost.

Description

Technical Field

[0001] The invention belongs to the technical field of structural design of cutting components of rock and soil excavation equipment, and in particular relates to a multi-modal vibration cutting device with an external excitation mechanism. Background Art

[0002] A roadheader is a piece of equipment used in tunneling and mining operations to break rocks, coal and other minerals. A typical longitudinal or transverse cantilever roadheader, the cutting device of a longitudinal cantilever roadheader mostly uses a conical cutting head with multiple picks installed, and a transverse cantilever roadheader mostly uses a transverse cutting head with picks installed. The cutter breaks the rock and soil when the cutting device rotates. Existing cantilever roadheaders have low cutting efficiency or even cannot effectively break rocks under hard rock geological conditions. An excitation structure is added to the traditional cantilever roadheader. The eccentric block in the excitation structure rotates to drive the cutting head to vibrate, so that the cutting teeth impact and break the rock during the rotation of the cutting device itself, and the vibration of the cutting device is superimposed, thereby improving the cutting efficiency under the combined effect of vibration and impact. Several existing methods of adding excitation cutting are all added inside the cutting head. The cutting device needs to be redesigned, the modification is large, the assembly is complex and the cost is high, which limits large-scale application. Summary of the invention

[0003] The object of the present invention is to provide a multi-modal vibration cutting device with an external excitation mechanism, so as to solve the technical problem of complex assembly of the existing cantilever type tunnel boring machine with the excitation structure.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention discloses a multi-modal vibration cutting device with an external excitation mechanism, comprising a reducer, a driving spindle, an excitation device, an excitation motor, an internal spline and a cutting device; the output shaft of the reducer is connected to one end of the driving spindle through a spline sleeve; the shaft end of the other end of the driving spindle is axially fixed with the cutting device bolt, and the other end of the driving spindle is fixedly connected to the cutting device through an internal spline; the excitation device is symmetrically installed on both sides of the driving spindle and is located between the cutting device and the reducer, and is used to provide the required excitation force to the cutting device.

[0006] Furthermore, one end of the driving main shaft close to the cutting device and one end close to the reducer are respectively sleeved with an outer cylinder body I and an outer cylinder body II; one end of the outer cylinder body I is connected to the inner spline through a bearing sealing structure; the other end of the outer cylinder body I is connected to the vibration excitation device;

[0007] One end of the outer cylinder II is fixedly connected to the reducer, and the other end is connected to the vibration excitation device.

[0008] Furthermore, the bearing sealing structure includes a bearing I, a floating seal seat, a floating seal frame and a bearing seat; one end of the outer cylinder I is connected to the internal spline through the bearing I; the bearing I is positioned and pressed in the cutting device using a floating seal seat and a floating seal frame; the bearing I is positioned by the bearing seat, and the bearing seat is welded to one end of the outer cylinder I.

[0009] Furthermore, the excitation device includes an excitation chamber assembly, an excitation shaft I, an excitation shaft II, a gear I, a gear II, an eccentric block I and an eccentric block II, which are symmetrically arranged on both sides of the driving main shaft; the symmetrically arranged excitation chamber assembly is respectively connected to the outer cylinder I and the outer cylinder II;

[0010] The excitation shaft I is arranged in an excitation chamber assembly, one end of which is connected to the excitation chamber assembly, and the other end of which passes through the excitation chamber assembly and is connected to an excitation driving device; the gear I is arranged on the excitation shaft I; a gear seat is arranged on the driving main shaft; a gear III is installed on the gear seat; the gear I is meshed with the gear III; the eccentric block I is arranged on one end of the excitation shaft I;

[0011] The exciting shaft II is arranged in another exciting chamber assembly, and its two ends are respectively connected to the exciting chamber assembly; the gear II is arranged on the exciting shaft II and meshes with the gear III; the eccentric block II is arranged on one end of the exciting shaft II.

[0012] Furthermore, the excitation chamber assembly includes an excitation end cover I, an excitation cylinder and an excitation end cover II; the two ends of the excitation cylinder are connected to the outer cylinder I and the outer cylinder II through the excitation end cover I and the excitation end cover II respectively;

[0013] The excitation shaft I is arranged in an excitation cylinder in an excitation chamber assembly, one end of which is connected to the excitation end cover I in the excitation chamber assembly, and the other end of which passes through the excitation end cover II in the excitation chamber assembly and is connected to an excitation driving device;

[0014] The excitation shaft II is arranged in the excitation cylinder in another excitation chamber assembly, and its two ends are respectively connected to the excitation end cover I and the excitation end cover II in the excitation chamber assembly.

[0015] Furthermore, the excitation drive device is an excitation motor; the excitation motor is connected to the excitation shaft I through a coupling.

[0016] Furthermore, the size parameters of gear I and gear II are the same.

[0017] Furthermore, the eccentric block I is on the exciting shaft II, connected by keys in the circumferential direction and positioned by a shaft shoulder and a sleeve in the axial direction.

[0018] Furthermore, the eccentric block II is on the exciting shaft II, connected by keys in the circumferential direction and positioned by a shaft shoulder and a sleeve in the axial direction.

[0019] Furthermore, the gear seat is key-connected to gear III.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention discloses a multi-modal vibration cutting device with an external excitation mechanism. The output shaft of a reducer is matched with a spline of a driving spindle, and one end of the driving spindle is matched with a spline inside the cutting device, so as to realize the rotation of the cutting device. By setting mutually symmetrical excitation devices, the required multi-modal excitation force is provided to the cutting device. The device is easy to assemble. It only needs to assemble the cutting device on the driving spindle to realize a variety of different forms of vibration. It has the advantages of simple manufacturing and assembly and low cost.

[0022] Furthermore, by designing a vibration device installed on the outer cylinder, the vibration motor drives the vibration shaft I, and the vibration shaft I rotates the vibration shaft II to generate vibration through gear transmission, and the vibration device is easy to disassemble and install; by installing gear III on the gear seat, it meshes with gear I and gear II respectively, so that the rotation from the vibration shaft I is transmitted to the vibration shaft II, ensuring the reliability of power transmission; the external eccentric block is convenient for adjusting the installation phase of the eccentric block I and the eccentric block II, so that different phase combinations are in different excitation states, realizing multi-modal vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the multi-modal vibration cutting device with an external excitation mechanism of the present invention;

[0024] Among them: 1-cutting device; 2-internal spline; 3-floating seal seat; 4-floating seal frame; 5-bearing Ⅰ; 6-bearing seat; 7-driving spindle; 8-outer cylinder Ⅰ; 9-excitation end cover Ⅰ; 10-eccentric block Ⅰ; 11-excitation cylinder; 12-gear Ⅰ; 13-excitation end cover Ⅱ; 14-excitation shaft Ⅰ; 15-coupling; 16-excitation motor; 17-reducer; 18-outer cylinder Ⅱ; 19-spline sleeve; 20-gear seat; 21-gear Ⅱ; 22-excitation shaft Ⅱ; 23-eccentric block Ⅱ; 24-gear Ⅲ. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0028] like Figure 1 As shown, the present invention discloses a multi-modal vibration cutting device with an external excitation mechanism, comprising a reducer 17, a driving spindle 7, an excitation device, an excitation motor 16, an internal spline 2, and a cutting device 1, wherein the output shaft of the reducer 17 and one end of the driving spindle 7 are splined, and the output shaft of the reducer 17 is connected to one end of the driving spindle 7 through a spline sleeve 19, and the power from the reducer 17 is transmitted to the driving spindle 7; the other end of the driving spindle 7 cooperates with the internal spline 2, the shaft end of the driving spindle 7 is axially fixed in the cutting device 1 by bolts, and the internal spline 2 is welded in the cutting device 1 and fixedly connected to the cutting device 1; the excitation device is symmetrically installed on both sides of the driving spindle 7 and is located between the cutting device 1 and the reducer 17, and is used to provide the required excitation force to the cutting device 1.

[0029] The excitation device is composed of an excitation chamber assembly, an excitation shaft Ⅰ14, an excitation shaft Ⅱ22, a gear Ⅰ12, a gear Ⅱ21, an eccentric block Ⅰ10 and an eccentric block Ⅱ23; the excitation chamber assembly is composed of an excitation end cover Ⅰ9, an excitation cylinder 11 and an excitation end cover Ⅱ13; the end of the driving main shaft 7 close to the cutting device 1 and the end close to the reducer 17 are respectively provided with an outer cylinder Ⅰ8 and an outer cylinder Ⅱ18; the floating seal seat 3 and the floating seal frame 4 are used to position and press the bearing Ⅰ5, the bearing Ⅰ5 is positioned by the bearing seat 6, and the bearing seat 6 is welded to the outer cylinder Ⅰ8;

[0030] The above-mentioned excitation chamber assembly is installed on the outer cylinder I8 and the outer cylinder II18, the excitation chamber assembly is fixedly connected with the outer cylinder I8 and the outer cylinder II17 by bolts, and the outer cylinder II18 is fixedly connected with the reducer 17;

[0031] The excitation shaft I14 is arranged in an excitation chamber assembly, one end of which is connected to the excitation chamber assembly, and the other end of which passes through the excitation chamber assembly and is connected to an excitation driving device; the gear I12 is arranged on the excitation shaft I14; the driving main shaft 7 is provided with a gear seat 20; the gear III24 is installed on the gear seat 20; the gear I12 is meshed with the gear III24; the eccentric block I10 is arranged on one end of the excitation shaft I14;

[0032] The exciting shaft II 22 is arranged in another exciting chamber assembly, and its two ends are respectively connected to the exciting chamber assembly; the gear II 21 is arranged on the exciting shaft II 22 and meshes with the gear III 24; the eccentric block II 23 is arranged on one end of the exciting shaft II 22; the gear I 12 meshes with the gear III 24 installed on the gear seat 20, further driving the gear II 21 meshing with the gear III 24 to rotate, driving the exciting shaft II 22, so that the exciting device generates the required exciting force under the cooperation of the eccentric block I 10 and the eccentric block II 23.

[0033] Preferably, the gear I12 and gear II21 have the same size parameters to ensure that the exciting shaft I14 and the exciting shaft II22 rotate at the same speed, and are connected by keys in the circumferential direction and positioned by shoulders and sleeves in the axial direction. The other ends of the exciting shaft I14 and the exciting shaft II22 are installed with eccentric blocks I10 and eccentric blocks II23, connected by splines in the circumferential direction and fastened with locking nuts in the axial direction.

[0034] Preferably, gear III 24 is installed on the gear seat 20 with interference fit, the gear seat 20 is supported by a pair of bearings and installed on the driving main shaft 7, the gear seat 20 is key-connected with gear III 24, and gear III 24 rotates on the driving main shaft 7 under the engagement of gear I 12.

[0035] Preferably, in addition to gears, the transmission of the exciting shaft I14 and the exciting shaft II22 in the exciting device can also adopt synchronous toothed belt transmission, so that the pulley drives the eccentric block I10 and the eccentric block II23 on the exciting shaft to vibrate.

[0036] In order to ensure the rotation of the cutting device 1, the output shaft of the reducer 17 is splined with the driving spindle 7, and one end of the driving spindle 7 is splined with the inner spline 2 of the cutting device 1; in order to realize the vibration of the cutting device 1, the excitation device installed on the outer cylinder body Ⅰ8 and the outer cylinder body Ⅱ18, the excitation motor 16 drives the excitation shaft Ⅰ14, and the excitation shaft Ⅰ14 rotates the excitation shaft Ⅱ22 through the gear transmission to generate vibration. The excitation device is easy to disassemble and install, which can enhance the cutting efficiency of the cutting device and effectively reduce the cutting. The wear of teeth and cutting surfaces is reduced, and energy consumption is reduced; in order to achieve the reliability of power transmission, gear III24 is installed on the gear seat 20, which meshes with gear I12 and gear II21 respectively, so that the rotation from the exciting shaft I14 is transmitted to the exciting shaft II22; in order to realize the multi-modal vibration of the exciting device, the eccentric block is matched with a spline and axially fastened with a round nut, which is convenient for adjusting the installation phase of the eccentric block I10 and the eccentric block II23, so that different phase combinations are in different exciting states.

[0037] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A multi-modal vibration cutting device with an external excitation mechanism, characterized in that: The invention comprises a reducer (17), a driving main shaft (7), an exciting device, an exciting motor (16), an internal spline (2) and a cutting device (1); the output shaft of the reducer (17) is connected to one end of the driving main shaft (7) via a spline sleeve (19); the shaft end of the other end of the driving main shaft (7) is axially fixed to the cutting device (1) by bolts, and the other end of the driving main shaft (7) is fixedly connected to the cutting device (1) via the internal spline (2); the exciting device is symmetrically installed on both sides of the driving main shaft (7) and is located between the cutting device (1) and the reducer (17), and is used to provide the required exciting force to the cutting device (1).

2. The multi-modal vibration cutting device with an external excitation mechanism according to claim 1, characterized in that: An end of the driving main shaft (7) close to the cutting device (1) and an end close to the speed reducer (17) are respectively sleeved with an outer cylinder body I (8) and an outer cylinder body II (18); one end of the outer cylinder body I (8) is connected to the internal spline (2) through a bearing sealing structure; the other end of the outer cylinder body I (8) is connected to the vibration excitation device; One end of the outer cylinder II (18) is fixedly connected to the reducer (17), and the other end is connected to the vibration excitation device.

3. The multi-modal vibration cutting device with an external excitation mechanism according to claim 2, characterized in that: The bearing sealing structure comprises a bearing I (5), a floating sealing seat (3), a floating sealing frame (4) and a bearing seat (6); one end of the outer cylinder I (8) is connected to the internal spline (2) via the bearing I (5); the bearing I (5) is positioned and pressed in the cutting device (1) by means of the floating sealing seat (3) and the floating sealing frame (4); the bearing I (5) is positioned by means of the bearing seat (6), and the bearing seat (6) is welded to one end of the outer cylinder I (8).

4. The multi-modal vibration cutting device with an external excitation mechanism according to claim 3, characterized in that: The excitation device comprises an excitation chamber assembly, an excitation shaft I (14), an excitation shaft II (22), a gear I (12), a gear II (21), an eccentric block I (10) and an eccentric block II (23) symmetrically arranged on both sides of the driving main shaft (7); the symmetrically arranged excitation chamber assembly is respectively connected to the outer cylinder I (8) and the outer cylinder II (18); The excitation shaft I (14) is arranged in an excitation chamber assembly, one end of which is connected to the excitation chamber assembly, and the other end of which passes through the excitation chamber assembly and is connected to an excitation drive device; the gear I (12) is arranged on the excitation shaft I (14); a gear seat (20) is arranged on the driving main shaft (7); a gear III (24) is installed on the gear seat (20); the gear I (12) is meshed with the gear III (24); the eccentric block I (10) is arranged on one end of the excitation shaft I (14); The exciting shaft II (22) is arranged in another exciting chamber assembly, and its two ends are respectively connected to the exciting chamber assembly; the gear II (21) is arranged on the exciting shaft II (22) and meshes with the gear III (24); the eccentric block II (23) is arranged on one end of the exciting shaft II (22).

5. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The excitation chamber assembly comprises an excitation end cover I (9), an excitation cylinder (11) and an excitation end cover II (13); the two ends of the excitation cylinder (11) are connected to the outer cylinder I (8) and the outer cylinder II (18) respectively through the excitation end cover I (9) and the excitation end cover II (13); The excitation shaft I (14) is arranged in an excitation cylinder (11) in an excitation chamber assembly, one end of which is connected to an excitation end cover I (9) in the excitation chamber assembly, and the other end of which passes through an excitation end cover II (13) in the excitation chamber assembly and is connected to an excitation driving device; The excitation shaft II (22) is arranged in an excitation cylinder (11) in another excitation chamber assembly, and its two ends are respectively connected to an excitation end cover I (9) and an excitation end cover II (13) in the excitation chamber assembly.

6. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The excitation drive device is an excitation motor (16); the excitation motor (16) is connected to the excitation shaft I (14) via a coupling (15).

7. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The gear I (12) and the gear II (21) have the same size parameters.

8. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The eccentric block I (10) is on the exciting shaft II (22), connected circumferentially by a key and positioned axially by a shaft shoulder and a sleeve.

9. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The eccentric block II (23) is on the exciting shaft II (22), connected by keys in the circumferential direction and positioned by a shaft shoulder and a sleeve in the axial direction.

10. The multi-modal vibration cutting device with an external excitation mechanism according to claim 4, characterized in that: The gear seat (20) is key-connected with the gear III (24).

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