Staggered side cutting roller and permanent magnet all-wheel-drive electric roller

Abstract

The utility model relates to a staggered side cutting roller and permanent magnet all-drive electric roller, which comprises a fixed part roller and a telescopic part roller, the end part of the telescopic part roller is provided with a plurality of first bulges arranged around the circumferential direction of the telescopic part roller, and a first groove is formed between every two adjacent first bulges; the end, used for being combined with the telescopic part roller, of the fixed part roller is provided with second protrusions corresponding to the first grooves, a second groove is formed between every two adjacent second protrusions, and when the telescopic part roller is in a contraction state, at least part of the first protrusions are embedded in the second grooves. The second protrusion is at least partially embedded in the first groove, and cutting teeth are arranged on the outer wall of the first protrusion and the outer wall of the second protrusion. The staggered side cutting rollers are designed, so that the fixed part roller and the telescopic part roller do not coincide, and the tunneling effect of the tunneling anchor machine in the extension state of the side cutting rollers is improved.

Description

Technical Field

[0001] The present application relates to the field of cutting drums, and in particular to a staggered side cutting drum and a permanent magnet full-drive electric drum. Background Art

[0002] The current cutting drum of the bolter miner includes a middle section cutting drum and side cutting drums on both sides. The middle section cutting drum and the side cutting drum are welded with cutting teeth arranged in a continuous spiral shape. At present, the side cutting drum includes an outer drum and an inner drum arranged in a receiving groove inside the outer drum, and all the cutting teeth are arranged on the outer drum. A telescopic cylinder is arranged inside the cutting drum to drive the telescopic section cutting drum to extend and retract. When the side cutting drum is in a retracted state, the outer drum and the inner drum are completely overlapped. When the side cutting drum is in an extended state, the inner drum is partially exposed, and cutting teeth are missing from part of the inner drum. During operation, excavation is carried out only by the friction between the outer wall of the inner drum and the coal mine, which not only easily causes wear of the inner drum, but also affects the excavation effect of the bolter miner. Utility Model Content

[0003] In order to reduce the wear of the inner drum shell and improve the excavation effect of the anchor miner when the side cutting drum is in an extended state, the present application provides a staggered side cutting drum and a permanent magnet all-drive electric drum.

[0004] In the first aspect, the present application provides a staggered side cutting drum adopting the following technical solution:

[0005] A staggered side cutting drum comprises a fixed drum and a telescopic drum, wherein the end of the telescopic drum is provided with a plurality of first protrusions arranged around its circumference, and a first groove is formed between two adjacent first protrusions; one end of the fixed drum used for combining with the telescopic drum is provided with a second protrusion corresponding to the first groove, and a second groove is formed between two adjacent second protrusions; when the telescopic drum is in a contracted state, the first protrusion is at least partially embedded in the second groove, and the second protrusion is at least partially embedded in the first groove; cutting teeth are provided on the outer walls of the first protrusion and the second protrusion.

[0006] By adopting the above technical scheme, by setting the shape of the combining position of the fixed part roller and the telescopic part roller, in the retracted state, the combining position of the side cutting roller is staggered, that is, when the telescopic part roller is in the retracted state, the fixed part roller and the retracted part roller do not overlap, and at the same time, since cutting teeth are arranged on the outer walls of the first protrusion and the second protrusion, when the telescopic part roller is extended, only the cutting tooth density at the combining point position will be reduced, and the cutting tooth will not be missing at the combining point position, thereby ensuring the excavation effect of the anchor mining machine and extending the service life of the side cutting roller.

[0007] Preferably, when the telescopic drum is in a retracted state, the first protrusion and the picks on the second protrusion form a continuous spiral shape; or

[0008] When the telescopic drum is in a retracted state, the picks on the first protrusion and the second protrusion are arranged in parallel, and when the telescopic drum is in an extended state, the picks on the first protrusion and the second protrusion form a continuously arranged spiral.

[0009] By adopting the above technical solution, the arrangement shape of the picks on the first protrusion and the second protrusion is set to ensure that the picks are arranged evenly.

[0010] Preferably, the first protrusion and the second protrusion are any one of rectangular, semicircular and trapezoidal.

[0011] By adopting the above technical solution, the staggered shape of the combined position of the fixed part roller and the telescopic part roller can be freely designed.

[0012] Preferably, when the telescopic portion roller is in a retracted state, the first protrusions are completely embedded in the second grooves, and the second protrusions are completely embedded in the first grooves.

[0013] By adopting the above technical solution, when the telescopic part roller is in the contracted state, the telescopic part roller and the fixed part roller are matched with each other without gap, so that the overall strength of the side cutting roller can be guaranteed.

[0014] Preferably, it also includes a telescopic cylinder and a secondary shaft passing through the inside of the staggered side cutting drum, the inside of the secondary shaft is provided with a mounting groove extending along its axial direction, the telescopic cylinder is arranged in the mounting groove, a connecting bracket is installed on the end wall of the telescopic part of the drum, and the piston rod of the telescopic cylinder is connected to the connecting bracket through a pin shaft.

[0015] By adopting the above technical solution and arranging the telescopic oil cylinder in the mounting groove inside the secondary shaft, more space can be saved.

[0016] Preferably, a guide groove connected to the mounting groove is provided inside the secondary shaft, a limiting step is formed between the guide groove and the mounting groove, and a guide ring embedded in the guide groove is sleeved on the piston rod of the telescopic cylinder.

[0017] By adopting the above technical solution, the piston rod of the telescopic oil cylinder is limited by providing a guide groove and forming a limiting step between the guide groove and the mounting groove.

[0018] In a second aspect, the present application provides a permanent magnet all-drive electric drum, which adopts the following technical solution:

[0019] A permanent magnet full-drive electric drum comprises a middle section cutting drum and a staggered side cutting drum, wherein a main shaft is arranged inside the middle section cutting drum, wherein the main shaft is detachably fixedly connected to the secondary shaft, wherein stator windings are integrated on the main shaft and the secondary shaft, wherein a first rotor is rotatably arranged on the main shaft, wherein a second rotor is rotatably arranged on the secondary shaft, wherein the second rotor is fixedly connected to the fixed section drum and is slidably connected to the telescopic section drum.

[0020] By adopting the above technical solution, permanent magnet electric technology is used for driving, which is more energy-saving and environmentally friendly than the traditional diesel engine drive, and has stable power output and high energy conversion efficiency. Stator windings are integrated on the main shaft and the secondary shaft, and excitation current is given to the main shaft or the secondary shaft respectively, or to the main shaft and the secondary shaft at the same time. It can drive only the middle section cutting drum or the side cutting drum to rotate, or drive the middle section cutting drum and the side cutting drum to rotate together.

[0021] Preferably, a rotor shell rotatably connected to the secondary shaft is fixed to the outside of the second rotor, a pin is provided between the rotor shell and the telescopic drum, and a slide groove extending along the axial direction of the telescopic drum is provided on the inner wall of the telescopic drum.

[0022] By adopting the above technical solution, when the telescopic roller is extended, the pin body slides along the slide groove. When the excitation current is applied to the secondary shaft, the second rotor drives the telescopic roller and the fixed roller to rotate together through the transmission of the pin body.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application sets staggered side cutting drums, and the fixed drum and the telescopic drum have no overlapping parts, so that when the side cutting drum is in the retracted state or the extended state, there is no situation where the cutting teeth are missing at a certain position, thereby ensuring the excavation effect of the anchor miner;

[0025] 2. This application uses permanent magnet electric technology to drive the middle section cutting drum and the side cutting drum to rotate, which is more energy-saving and environmentally friendly, has stable power output and high energy conversion efficiency, and is easier to realize intelligence; BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial cross-sectional schematic diagram of a permanent magnet full-drive electric drum of the utility model of the present application.

[0027] Figure 2 yes Figure 1 A partial enlarged view of the middle section.

[0028] Explanation of the reference numerals in the accompanying drawings: 01, staggered side cutting drum; 02, middle section cutting drum; 03, permanent magnet full-drive electric drum; 1, fixed part drum; 2, telescopic part drum; 3, first protrusion; 4, first groove; 5, second protrusion; 6, second groove; 7, cutting tooth; 8, telescopic cylinder; 9, main shaft; 10, secondary shaft; 101, mounting groove; 102, guide groove; 103, limiting step; 11, first rotor; 12, second rotor; 13, rotor housing; 14, connecting bracket; 15, pin shaft; 16, guide ring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] The present application embodiment discloses a staggered side cutting drum. Figure 1 and Figure 2 The staggered side cutting drum 01 includes a fixed drum 1, a telescopic drum 2 and a telescopic cylinder 8. The end of the telescopic drum 2 is provided with a plurality of first protrusions 3 arranged around its circumference, and a first groove 4 is formed between two adjacent first protrusions 3. The fixed drum 1 is provided with a second protrusion 5 corresponding to the first groove 4 at one end for combining with the telescopic drum 2, and a second groove 6 is formed between two adjacent second protrusions 5. When the telescopic drum 2 is in a retracted state, the first protrusion 3 is at least partially embedded in the second groove 6, and the second protrusion 5 is at least partially embedded in the first groove 4, and the outer walls of the first protrusion 3 and the second protrusion 5 are both provided with cutting teeth 7.

[0031] Regarding the arrangement of the picks 7, when the telescopic drum 2 is in the retracted state, the picks 7 on the first protrusion 3 and the second protrusion 5 can form a continuous spiral shape, and when the telescopic drum 2 is in the extended state, the picks 7 on the first protrusion 3 and the second protrusion 5 still form a continuous spiral shape, but the density of the picks 7 at the junction point is reduced. Alternatively, when the telescopic drum 2 is in the retracted state, the picks 7 on the first protrusion 3 and the second protrusion 5 are arranged in parallel, and when the telescopic drum 2 is in the extended state, the picks 7 on the first protrusion 3 and the second protrusion 5 form a continuously arranged spiral shape.

[0032] When the telescopic drum 2 is in the retracted state, the first protrusions 3 are all embedded in the second grooves 6, and the second protrusions 5 are all embedded in the first grooves 4. Therefore, when the telescopic drum 2 is in the retracted state, the fixed drum 1 and the retracted drum do not overlap. At the same time, since the outer walls of the first protrusions 3 and the second protrusions 5 are both provided with picks 7, when the telescopic drum 2 is extended, only the density of the picks 7 at the joint position will be reduced, and the picks 7 will not be missing at the joint position, thereby ensuring the excavation effect of the anchor miner and extending the service life of the side cutting drum.

[0033] The shapes of the first protrusions 3 and the second protrusions 5 can be selected from any one of rectangular, semicircular, and trapezoidal, and the shapes of the plurality of first protrusions 3 arranged circumferentially around the telescopic drum 2 can be the same or different. Correspondingly, the shapes of the plurality of second protrusions 5 arranged circumferentially around the fixed drum 1 correspond to the first grooves 4 formed between two adjacent first protrusions 3.

[0034] The implementation principle of a staggered side cutting drum in the embodiment of the present application is as follows: when the telescopic drum 2 is in a retracted state, the first protrusions 3 are all embedded in the second groove 6, and the second protrusions 5 are all embedded in the first groove 4. The picks 7 on the first protrusions 3 and the second protrusions 5 are arranged continuously in a set shape. When the telescopic cylinder 8 controls the telescopic drum 2 to extend, the first protrusion 3 gradually moves away from the bottom of the second groove 6, and the second protrusion 5 gradually moves away from the bottom of the first groove 4. The picks 7 on the first protrusion 3 and the second protrusion 5 are staggered. After the telescopic drum 2 is extended, the density of the picks 7 at the same position is reduced, but the picks 7 will not be fixed at this position, thereby ensuring the excavation effect of the anchor mining machine when it is working.

[0035] The present application also discloses a permanent magnet full-drive electric drum. Figure 1 and Figure 2 The permanent magnet all-drive electric drum 03 includes a middle section cutting drum 02 and staggered side cutting drums 01 arranged on both sides. A main shaft 9 is arranged inside the middle section cutting drum 02, and a secondary shaft 10 is arranged inside the staggered side cutting drum 01. Stator windings are integrated on the main shaft 9 and the secondary shaft 10, and the main shaft 9 and the secondary shaft 10 are detachably fixedly connected. A first rotor 11 is rotatably arranged on the main shaft 9, and a second rotor 12 is rotatably arranged on the secondary shaft 10. The second rotor 12 is fixedly connected to the fixed part drum 1 and is slidably connected to the telescopic part drum 2. Specifically, a rotor housing 13 rotatably connected to the secondary shaft 10 is fixed to the outside of the second rotor 12, and a pin body is arranged between the rotor housing 13 and the telescopic part drum 2, and a slide groove extending along the axial direction of the telescopic part drum 2 is opened on the inner wall of the telescopic part drum 2.

[0036] The auxiliary shaft 10 has a mounting groove 101 extending along its axis, and the telescopic cylinder 8 is arranged in the mounting groove 101 to save space of the staggered side cutting drum 01 of the present application. A connecting bracket 14 is installed on the end wall of the telescopic drum 2, and the piston rod of the telescopic cylinder 8 is connected to the connecting bracket 14 through a pin 15.

[0037] A guide groove 102 communicating with the mounting groove 101 is provided inside the secondary shaft 10, and a limiting step 103 is formed between the guide groove 102 and the mounting groove 101. A guide ring 16 embedded in the guide groove 102 is sleeved on the piston rod of the telescopic oil cylinder 8.

[0038] The implementation principle of a permanent magnet full-drive electric roller in the embodiment of the present application is: it is driven by permanent magnet electric technology, and the cutting operation is performed by directly driving the roller cutting teeth 7, thereby improving the cutting efficiency and quality. In addition, the permanent magnet drive technology has the characteristics of high efficiency, which can consume less electric energy at the same power and reduce the operating cost. The present application integrates stator electronics on the main shaft 9 and the secondary shaft 10 respectively, and applies excitation current to the main shaft 9 or the secondary shaft 10 respectively, or applies excitation current to the main shaft 9 and the secondary shaft 10 at the same time, so that only the middle section cutting roller 02 or the staggered side cutting roller 01 can be driven to rotate, or the middle section cutting roller 02 and the staggered side cutting roller 01 can be driven to rotate together.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A staggered side cutting drum, characterized in that: The invention comprises a fixed roller (1) and a telescopic roller (2), wherein the end of the telescopic roller (2) is provided with a plurality of first protrusions (3) arranged around the circumference thereof, and a first groove (4) is formed between two adjacent first protrusions (3); one end of the fixed roller (1) used for combining with the telescopic roller (2) is provided with a second protrusion (5) corresponding to the first groove (4), and a second groove (6) is formed between two adjacent second protrusions (5); when the telescopic roller (2) is in a contracted state, the first protrusion (3) is at least partially embedded in the second groove (6), and the second protrusion (5) is at least partially embedded in the first groove (4); and pick teeth (7) are provided on the outer walls of the first protrusion (3) and the second protrusion (5).

2. The staggered side cutting drum according to claim 1, characterized in that: When the telescopic drum (2) is in a retracted state, the first protrusion (3) and the pick (7) on the second protrusion (5) form a continuous spiral shape; or When the telescopic drum (2) is in a retracted state, the picks (7) on the first protrusion (3) and the second protrusion (5) are arranged in parallel, and when the telescopic drum (2) is in an extended state, the picks (7) on the first protrusion (3) and the second protrusion (5) form a continuously arranged spiral.

3. The staggered side cutting drum (01) according to claim 1, characterized in that: When the telescopic roller (2) is in a retracted state, the first protrusion (3) is completely embedded in the second groove (6), and the second protrusion (5) is completely embedded in the first groove (4).

4. The staggered side cutting drum according to claim 3, characterized in that: The first protrusion (3) and the second protrusion (5) are any one of rectangular, semicircular and trapezoidal.

5. The staggered side cutting drum according to claim 1, characterized in that: It also includes a telescopic oil cylinder (8) and a secondary shaft (10) inserted into the staggered side cutting drum (01); the secondary shaft (10) is provided with a mounting groove (101) extending along its axial direction; the telescopic oil cylinder (8) is arranged in the mounting groove (101); a connecting bracket (14) is installed on the end wall of the telescopic part drum (2); and the piston rod of the telescopic oil cylinder (8) is connected to the connecting bracket (14) via a pin shaft (15).

6. The staggered side cutting drum according to claim 5, characterized in that: A guide groove (102) communicating with the mounting groove (101) is provided inside the secondary shaft (10), a limiting step (103) is formed between the guide groove (102) and the mounting groove (101), and a guide ring (16) embedded in the guide groove (102) is sleeved on the piston rod of the telescopic oil cylinder (8).

7. A permanent magnet full-drive electric drum, characterized in that: It comprises a middle section cutting drum (02) and the staggered side cutting drum (01) as described in any one of claims 1 to 6, wherein a main shaft (9) is arranged inside the middle section cutting drum (02), and the main shaft (9) and the secondary shaft (10) are detachably fixedly connected, and stator windings are integrated on the main shaft (9) and the secondary shaft (10), and a first rotor (11) is rotatably arranged on the main shaft (9), and a second rotor (12) is rotatably arranged on the secondary shaft (10), and the second rotor (12) is fixedly connected to the fixed part drum (1) and slidably connected to the telescopic part drum (2).

8. The permanent magnet full-drive electric drum according to claim 7, characterized in that: A rotor housing (13) rotatably connected to the secondary shaft (10) is fixed to the outside of the second rotor (12), a pin body is arranged between the rotor housing (13) and the telescopic roller (2), and a slide groove extending along the axial direction of the telescopic roller (2) is arranged on the inner wall of the telescopic roller (2).

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