Multi-mode vibration cutting device with external excitation mechanism

Abstract

The utility model 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 utility model, the two groups of mutually symmetrical excitation devices are arranged on the cutting component, the 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 utility model 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 crush rock, coal, and other minerals. A typical vertical or horizontal cantilever roadheader is a vertical cantilever roadheader with a conical cutting head equipped with multiple cutting teeth. A horizontal cantilever roadheader with a vertical cantilever roadheader often uses a transverse cutting head equipped with cutting teeth. The cutter breaks the rock and soil as the cutting device rotates. Existing cantilever roadheaders have low cutting efficiency or are even unable to effectively break rock under hard rock geological conditions. Adding an excitation structure to a traditional cantilever roadheader involves the rotation of the eccentric block in the excitation structure, which drives the cutting head to vibrate. This allows the cutting teeth to impact and break the rock as the cutting device rotates, while also superimposing the vibration of the cutting device. This combined effect of vibration and impact improves the efficiency of the cutting operation. Several existing methods of adding excitation cutting all involve adding it inside the cutting head. This requires the cutting device to be redesigned, which results in significant modifications, complex assembly, and high costs, limiting its large-scale application. Utility Model Content

[0003] The purpose of the utility model 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 roadheader with an additional excitation structure.

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

[0005] The utility model 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 a bolt of the cutting device, 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, the drive spindle is provided with an outer cylinder I and an outer cylinder II at one end close to the cutting device and the other end close to the reducer, respectively; one end of the outer cylinder I is connected to the internal spline through a bearing sealing structure; the other end of the outer cylinder 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 sealing seat, a floating sealing 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 sealing seat and a floating sealing 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 drive device; the gear I is arranged on the excitation shaft I; the driving main shaft is provided with a gear seat; the gear III is mounted 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 respectively through the excitation end cover I and the excitation end cover II;

[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 the excitation drive device;

[0014] The exciting shaft II is arranged in the exciting cylinder in another exciting chamber assembly, and its two ends are respectively connected to the exciting end cover I and the exciting end cover II in the exciting 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 circumferentially by a key, and positioned axially by a shaft shoulder and a sleeve.

[0018] Furthermore, the eccentric block II is on the exciting shaft II, connected circumferentially by a key, and positioned axially by a shaft shoulder and a sleeve.

[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 utility model discloses a multi-modal vibration cutting device with an external excitation mechanism. The rotation of the cutting device is achieved by matching the output shaft of the reducer with the spline of the driving main shaft, and one end of the driving main shaft is matched with the spline inside the cutting device. By arranging mutually symmetrical excitation devices, the required multi-modal excitation force is provided to the cutting device. The device is simple to assemble. It only needs to assemble the cutting device on the driving main shaft to achieve various forms of vibration. The device 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 through gear transmission to generate vibration, and the vibration device is easy to disassemble and install; by installing gear III on the gear seat, it engages 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 facilitates the adjustment of 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 This 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 help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts 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 numbers 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 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 described in further detail below with reference to the accompanying drawings:

[0028] like Figure 1 As shown, the utility model discloses a multi-modal vibration cutting device with an external excitation mechanism, including 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 is matched with the internal spline 2, and the shaft end of the driving spindle 7 is axially fixed by bolts in the cutting device 1, 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, for providing the required excitation force to the cutting device 1.

[0029] The excitation device consists of an excitation chamber assembly, an excitation shaft I14, an excitation shaft II22, gears I12, gears II21, an eccentric mass I10, and an eccentric mass II23. The excitation chamber assembly consists of an excitation end cover I9, an excitation cylinder 11, and an excitation end cover II13. The end of the driving spindle 7 near the cutting device 1 and the end near the reducer 17 are respectively provided with outer cylinders I8 and II18. The floating seal seat 3 and the floating seal frame 4 are used to position and tighten 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 to the outer cylinder I8 and the outer cylinder II17 by bolts. The outer cylinder II18 is fixedly connected to the reducer 17.

[0031] The excitation shaft I14 is disposed 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 I12 is disposed on the excitation shaft I14; a gear seat 20 is disposed on the drive spindle 7; a gear III24 is mounted on the gear seat 20; the gear I12 meshes with the gear III24; the eccentric mass I10 is disposed on one end of the excitation shaft I14;

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

[0033] Preferably, gears I12 and II21 have identical dimensions to ensure consistent rotational speeds for the excitation shafts I14 and II22. They are circumferentially keyed and axially positioned using a shoulder and sleeve. Eccentric masses I10 and II23 are mounted on the other ends of the excitation shafts I14 and II22, circumferentially splined and axially secured with a lock nut.

[0034] Preferably, gear III 24 is installed on the gear seat 20 with an interference fit. The gear seat 20 is supported by a pair of bearings and installed on the drive main shaft 7. The gear seat 20 is key-connected with gear III 24. Gear III 24 rotates on the drive 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 mass I10 and the eccentric mass 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 main shaft 7, and one end of the driving main shaft 7 is matched with the internal 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 Ⅰ8 and the outer cylinder Ⅱ18 is used, and 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 speed. The wear of teeth and cutting surfaces is reduced, and energy consumption is reduced; in order to achieve the reliability of power transmission, gear III 24 is installed on the gear seat 20, which meshes with gear I 12 and gear II 21 respectively, thereby transmitting the rotation from the exciting shaft I 14 to the exciting shaft II 22; in order to achieve 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 I 10 and the eccentric block II 23, so that different phase combinations are in different exciting states.

[0037] The above content is 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 speed reducer (17), a driving main shaft (7), an excitation device, an excitation motor (16), an internal spline (2) and a cutting device (1); the output shaft of the speed 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 a bolt, and the other end of the driving main shaft (7) is fixedly connected to the cutting device (1) via the internal spline (2); the excitation device is symmetrically installed on both sides of the driving main shaft (7) and is located between the cutting device (1) and the speed reducer (17), and is used to provide the required excitation force to the cutting device (1); The drive main shaft (7) is provided with an outer cylinder body I (8) and an outer cylinder body II (18) on one end close to the cutting device (1) and the other end close to the speed reducer (17), respectively; 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; 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 connected to the outer cylinder I (8) and the outer cylinder II (18) respectively; 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 mounted 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); The excitation chamber assembly includes 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 the excitation end cover I (9) in the excitation chamber assembly, and the other end of which passes through the excitation end cover II (13) in the excitation chamber assembly and is connected to an excitation drive 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 the excitation end cover I (9) and the excitation end cover II (13) in the excitation chamber assembly; 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).

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

3. The multi-modal vibration cutting device with an external excitation mechanism according to claim 2, characterized in that: The gear I (12) and the gear II (21) have the same size parameters.

4. The multi-modal vibration cutting device with an external excitation mechanism according to claim 3, 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.

5. 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 circumferentially by a key and positioned axially by a shaft shoulder and a sleeve.

6. The multi-modal vibration cutting device with an external excitation mechanism according to claim 5, characterized in that: The gear seat (20) is key-connected to the gear III (24).

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