CN215956155U - Bidirectional rotatable cable leading-in structure for coal mining machine motor - Google Patents
Bidirectional rotatable cable leading-in structure for coal mining machine motor Download PDFInfo
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- CN215956155U CN215956155U CN202122594168.8U CN202122594168U CN215956155U CN 215956155 U CN215956155 U CN 215956155U CN 202122594168 U CN202122594168 U CN 202122594168U CN 215956155 U CN215956155 U CN 215956155U
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Abstract
A bidirectional rotatable cable leading-in structure for a coal mining machine motor comprises a stator, a junction box and a rotary cable leading-in device, wherein the stator comprises a base and a stator core with windings, the stator core is arranged on the inner side of the base, and the junction box is fixedly arranged on the outer side of the base and forms a junction box cavity with the wall of the base; the rotating cable leading-in device comprises an external thread sleeve and an internal lining which are in running fit, the external thread sleeve is fixedly arranged on the machine base wall in the junction box and is in fastening fit with the machine base wall, and the internal lining is assembled in a through hole of the external thread sleeve and can axially rotate; the inner through hole of the inner bushing is also matched with the double-end copper joint, when in assembly, the inner lead cable and the outer lead cable are communicated through the double-end copper joint to form a passage and are fixed in the inner bushing through the glue sealing agent, and the inner lead cable arranged in the cavity of the machine base is connected with the winding of the stator core with the winding. The invention does not need to additionally weld lead cables to the stator, the rotary cable lead-in device is provided with the lead cables, the lead-in junction box is simple, and the required operation space is small.
Description
Technical Field
The invention belongs to the technical field of special motors for underground coal of a coal mine, and particularly relates to a bidirectional rotatable cable leading-in structure for a motor of a coal mining machine.
Background
The motor of the coal mining machine is used as main power driving equipment of the coal mining machine and is arranged in the coal mining machine, the requirement on the overall dimension of the motor is very strict due to limited space, and the motor of some machines is limited by the structural dimension, so that the reserved operation space is very small. Conventional coal-winning machine motor stator need additionally weld longer a section lead wire cable, introduce the terminal box and adopt stud formula binding bolt usually, perhaps one end is the structure of binding bolt one end for the crimping head, perhaps riser structure's terminal box, these several kinds of structures all need reserve great operating space, terminal size itself is longer, riser structure's terminal box is two cavitys, the size is big, do not utilize the space, there is the bolt not hard up in motor operation process in addition, the not tight condition of binding head crimping.
Therefore, the invention designs a bidirectional rotatable cable leading-in structure for a coal mining machine motor aiming at the problems.
Disclosure of Invention
The invention aims to provide a bidirectional rotatable cable leading-in structure for a motor of a coal mining machine, aiming at the defects of the prior art, so that the size of a junction box is effectively reduced, and the requirements of a compact coal mining machine are met.
In order to solve the technical problems, the invention adopts the technical scheme that:
a bidirectional rotatable cable leading-in structure for a coal mining machine motor comprises a stator, a junction box and a rotary cable leading-in device, wherein the stator comprises a base and a stator core with windings, the stator core is arranged on the inner side of the base, and the junction box is fixedly arranged on the outer side of the base and forms a junction box cavity with the wall of the base;
the rotary cable leading-in device comprises an external thread sleeve and an internal lining which are in running fit, the external thread sleeve is fixedly arranged on the wall of the machine base in the junction box and is in fastening fit with the wall of the machine base, and the internal lining is assembled in a through hole of the external thread sleeve and can axially rotate;
the inner through hole of the inner bushing is also matched with the double-end copper joint, when the inner bushing is assembled, the inner lead cable and the outer lead cable are communicated through the double-end copper joint to form a passage and are fixed in the inner bushing through the glue sealing agent, and the inner lead cable arranged in the cavity of the machine base is connected with the winding of the stator core with the winding.
The upper end of the external thread sleeve is in a hexagonal surface structure, and the lower end of the external thread sleeve is an external thread surface and is tightly matched with the base wall through external threads.
The lower end part of the inner bushing is provided with a limiting boss, the upper end part of the inner bushing is provided with a retaining ring groove and is radially clamped to the inner bushing through the arranged retaining ring, and the inner through hole of the inner bushing is provided with a plurality of limiting grooves.
The external thread surface and the through hole surface of the external thread sleeve are both arranged to be explosion-proof surfaces, the outer surface of the inner bushing is also arranged to be an explosion-proof surface, and the inner bushing and the external thread sleeve are in clearance fit.
And the double-end copper joint is provided with an inner wire harness hole for installing an inner lead cable and an outer wire harness hole for installing an outer lead cable.
And glue sealing agents are densely arranged between the inner lead cable, the outer lead cable, the double-end copper joint and the inner lining.
The inner lead cable and the outer lead cable are cast into the inner lining by adopting a casting process, and the casting length and the casting process meet the requirements of GB3836.9 pull-out tests.
And the inner lead cable is welded with a winding copper wire of the stator core with the winding.
The invention has the beneficial effects that:
(1) according to the bidirectional rotatable cable leading-in structure for the coal mining machine motor, through the arrangement of the stator, the junction box and the rotary cable leading-in device, aiming at the coal mining machine motor which is compact in structure and small in operable space and has difficulty in leading the main cable of the stator into the junction box, the bidirectional rotatable cable leading-in structure for the coal mining machine motor is provided, lead cables do not need to be additionally welded on the stator, the rotary cable leading-in device is provided with the lead cables, the leading-in junction box is simple, and the required operation space is small; only one main wiring cavity is needed for the wiring box, when the lead is introduced into the wiring box, a wiring head is not needed, and a nut is not needed for pressing, so that the size of the motor is reduced, the assembly is convenient, and the reliability of the motor product is effectively improved.
(2) The rotary cable leading-in device effectively separates a junction box cavity from a machine base cavity by adopting a through-wall pouring and threading process, and the junction box is a cavity, so that the safety standard requirement can be met, and the size of the junction box is effectively reduced.
(3) The motor is qualified in test performance, the structure meets the requirements of an explosion-proof motor, an inner lead cable in the rotary cable leading-in device is directly welded and fixed with a winding copper wire, the length of the lead wire is short, the required operation space is small, the structure is compact, the outer thread sleeve and the inner lining can be separated, and the assembly is convenient.
(4) The three-dimensional motor rotor structure is reasonable in structure and convenient to implement, has a good effect through three-dimensional model analysis and trial production verification, and can reduce the volume of the motor and improve the reliability of the product.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the rotary cable entry device;
FIG. 3 is a schematic view of the construction of the inner liner;
fig. 4 is a schematic structural view of the externally threaded sleeve.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The invention provides a bidirectional rotatable cable leading-in structure for a coal mining machine motor, which is shown in figures 1 to 4.
The bidirectional rotatable cable leading-in structure for the coal mining machine motor comprises a stator, a junction box 3 and a rotary cable leading-in device 2, wherein the stator comprises a base 4 and a stator core 1 with a winding, which is arranged on the inner side of the base, and the junction box 3 is fixedly arranged on the outer side of the base 4 and forms a junction box cavity with the wall of the base; the rotary cable leading-in device 2 comprises an external thread sleeve 8 and an internal lining 10 which are in running fit, the external thread sleeve 8 is fixedly arranged on the machine base wall in the junction box 3 and is in fastening fit with the machine base wall, and the internal lining 10 is assembled in a through hole of the external thread sleeve 8 and can axially rotate.
The inner through hole of the inner bushing 10 is also provided with a double-end copper joint 9, when in assembly, the inner lead cable 11 and the outer lead cable 5 are communicated through the double-end copper joint 9 to form a passage and are fixed in the inner bushing 10 through a glue sealant 6, and the inner lead cable 11 arranged in the machine base cavity is welded with a winding copper wire of the stator core 1 with a winding.
The upper end of the external thread sleeve 8 is in a hexagonal surface structure, and the lower end of the external thread sleeve is in an external thread surface and is tightly matched with the base wall through external threads. In this embodiment, the external thread surface of the external thread sleeve 8 and the through hole surface thereof are both set to be explosion-proof surfaces, the outer surface of the inner bushing 10 is also set to be explosion-proof surfaces, the inner bushing 10 and the external thread sleeve 8 are in clearance fit, and the machining tolerance meets the explosion-proof requirement.
The lower end of the inner bushing 10 is provided with a limiting boss 101, the upper end of the inner bushing is provided with a retainer ring groove 102, the inner bushing 10 is radially clamped through a retainer ring 7, the inner bushing 10 is prevented from radially moving, and the inner through hole of the inner bushing is provided with a plurality of limiting grooves 103.
The double-end copper joint 9 is provided with an inner wire hole for installing an inner lead cable 11 and an outer wire hole for installing an outer lead cable 5.
And glue sealing agents 6 are densely arranged between the inner lead cable 11, the outer lead cable 5, the double-end copper joint 9 and the inner lining 10. Correspondingly, the pressed inner lead cable 11 and the pressed outer lead cable 5 are poured into the inner bushing by adopting a pouring and sealing process, and the pouring and sealing length and the pouring and sealing process meet the requirements of GB3836.9 pull-out test. Meanwhile, the inner lead cable 11 in the rotary cable lead-in device is directly welded and fixed with the winding copper wire, the lead wire is short in length, the required operation space is small, the structure is compact, the outer thread sleeve and the inner lining can be separated, and the assembly is convenient.
The U-phase, V-phase and W-phase copper flat wires are reserved after the wire is completely laid on the stator core with the winding, no matter before or after the VPI vacuum pressure paint is soaked, a main lead cable, a compression joint connector and a fixed connector do not need to be additionally welded, the winding end is short, the size of the motor is favorably shortened, the material and labor cost is reduced, and the assembly is convenient; the junction box is welded and fixed on the base, only one wiring cavity is needed, and the structure is simple and the size is small.
According to the bidirectional rotatable cable leading-in structure for the coal mining machine motor, through the arrangement of the stator, the junction box and the rotary cable leading-in device, the stator does not need to be additionally welded with a main lead cable and a crimping connector lug, the size of a winding wire outlet end is short, the material and labor cost is reduced, and the assembly is convenient; the rotary cable leading-in device effectively separates a junction box cavity from a base cavity by adopting a through-wall pouring and wire passing process, the junction box is a cavity, the safety standard requirement can be met, the size of the junction box is effectively reduced, the requirement of a compact coal mining machine is met, and the rotary cable leading-in device can be widely applied to a motor of the coal mining machine.
The three-dimensional motor rotor structure is reasonable in structure and convenient to implement, has a good effect through three-dimensional model analysis and trial production verification, and can reduce the volume of the motor and improve the reliability of the product.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "center", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.
Claims (8)
1. The utility model provides a two-way rotatable cable introduction structure is used to coal-winning machine motor which characterized in that: the stator comprises a base and a stator core with windings, the stator core is arranged on the inner side of the base, and the junction box is fixedly arranged on the outer side of the base and forms a junction box cavity with the wall of the base;
the rotary cable leading-in device comprises an external thread sleeve and an internal lining which are in running fit, the external thread sleeve is fixedly arranged on the wall of the machine base in the junction box and is in fastening fit with the wall of the machine base, and the internal lining is assembled in a through hole of the external thread sleeve and can axially rotate;
the inner through hole of the inner bushing is also matched with the double-end copper joint, when the inner bushing is assembled, the inner lead cable and the outer lead cable are communicated through the double-end copper joint to form a passage and are fixed in the inner bushing through the glue sealing agent, and the inner lead cable arranged in the cavity of the machine base is connected with the winding of the stator core with the winding.
2. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 1, characterized in that: the upper end of the external thread sleeve is in a hexagonal surface structure, and the lower end of the external thread sleeve is an external thread surface and is tightly matched with the base wall through external threads.
3. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 1, characterized in that: the lower end part of the inner bushing is provided with a limiting boss, the upper end part of the inner bushing is provided with a retaining ring groove and is radially clamped to the inner bushing through the arranged retaining ring, and the inner through hole of the inner bushing is provided with a plurality of limiting grooves.
4. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 1, characterized in that: the external thread surface and the through hole surface of the external thread sleeve are both arranged to be explosion-proof surfaces, the outer surface of the inner bushing is also arranged to be an explosion-proof surface, and the inner bushing and the external thread sleeve are in clearance fit.
5. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to any one of claims 1 to 4, characterized in that: and the double-end copper joint is provided with an inner wire harness hole for installing an inner lead cable and an outer wire harness hole for installing an outer lead cable.
6. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 5, characterized in that: and glue sealing agents are densely arranged between the inner lead cable, the outer lead cable, the double-end copper joint and the inner lining.
7. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 6, characterized in that: the inner lead cable and the outer lead cable are cast into the inner lining by adopting a casting process, and the casting length and the casting process meet the requirements of GB3836.9 pull-out tests.
8. The bidirectional rotatable cable leading-in structure for the coal mining machine motor according to claim 6, characterized in that: and the inner lead cable is welded with a winding copper wire of the stator core with the winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594168.8U CN215956155U (en) | 2021-10-27 | 2021-10-27 | Bidirectional rotatable cable leading-in structure for coal mining machine motor |
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| CN202122594168.8U CN215956155U (en) | 2021-10-27 | 2021-10-27 | Bidirectional rotatable cable leading-in structure for coal mining machine motor |
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| CN215956155U true CN215956155U (en) | 2022-03-04 |
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| CN202122594168.8U Active CN215956155U (en) | 2021-10-27 | 2021-10-27 | Bidirectional rotatable cable leading-in structure for coal mining machine motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922553A (en) * | 2021-10-27 | 2022-01-11 | 卧龙电气南阳防爆集团股份有限公司 | Bidirectional rotatable cable leading-in structure for coal mining machine motor |
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2021
- 2021-10-27 CN CN202122594168.8U patent/CN215956155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922553A (en) * | 2021-10-27 | 2022-01-11 | 卧龙电气南阳防爆集团股份有限公司 | Bidirectional rotatable cable leading-in structure for coal mining machine motor |
| CN113922553B (en) * | 2021-10-27 | 2024-07-02 | 卧龙电气南阳防爆集团股份有限公司 | Bidirectional rotatable cable introducing structure for coal cutter motor |
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