CN104779753A - Coal mining machine motor torque axis overload protecting device based on magneto-rheological technology - Google Patents
Coal mining machine motor torque axis overload protecting device based on magneto-rheological technology Download PDFInfo
- Publication number
- CN104779753A CN104779753A CN201510128937.1A CN201510128937A CN104779753A CN 104779753 A CN104779753 A CN 104779753A CN 201510128937 A CN201510128937 A CN 201510128937A CN 104779753 A CN104779753 A CN 104779753A
- Authority
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- China
- Prior art keywords
- overload protection
- protection arrangement
- rotor
- driven rotor
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention discloses a coal mining machine motor torque axis overload protecting device based on a magneto-rheological technology. The coal mining machine motor torque axis overload protecting device comprises a cutting part gear (3), bearings (2) arranged at two ends of the cutting part gear, a coupler (4), a cutting part housing (6) and a motor (8), and further comprises a torque axis II (1), a torque axis I (7) and a magnetorheological fluid overload protection device (5), wherein one end of the torque axis II is connected with the cutting part gear (3) through a spline, and the other end of the torque axis II is connected with the magnetorheological fluid overload protection device through the coupler; one end of the torque axis I is connected with a motor rotor (9) of the motor through a spline, and the other end of the torque axis I is connected with the magnetorheological fluid overload protection device through the coupler; the magnetorheological fluid overload protection device is fixed on the cutting part housing through a connecting member (13). The coal mining machine motor torque axis overload protecting device can be automatically recovered when being overloaded, without damaging any structure and replacing any element, and has the advantages of saving time, effectively increasing the work efficiency, and reducing the production cost.
Description
Technical field
The present invention relates to a kind of coal-winning machine overload protection arrangement, specifically a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique, belongs to coal-winning machine technical field.
Background technology
Coal-winning machine is designed to torque axis form at cutting units motor place usually, and it also plays overload protective function except transmitted power between cutting motor and machine driven system.At present, the basic structure of winning machine cutting part Motor torque axle is a hollow male splined shaft, has compensating groove that is U-shaped or V-structure, to produce notch effect in the side of axle.The failure mode mainly torque failure of torque axis, logical when cutting units transships, torque axis ruptures at spron place, the torque axis then more renewed.This mode brings two problems, and one is change difficulty greatly, and change workload during fracture large, fracture axis body not easily takes out, and reduces the operating efficiency of coal-winning machine; Two is that cost is high, and after fracture, torque axis is scrapped then and there, need again change, and single cost, between several thousand to unit up to ten thousand, adds the operating cost of coal-winning machine.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique, can realize transshipping and automatically recover; do not destroy any structure, any element need not be changed, save time; increase work efficiency, cost-saving.
To achieve these goals, the technical solution used in the present invention is: this is based on the coal-winning machine Motor torque axle overload protection arrangement of magnetic converting technique, comprise cutting units gear, be arranged on the bearing at cutting units gear two ends, shaft coupling, cutting units housing and motor, also comprise torque axis II, torque axis I and magnetic flow liquid overload protection arrangement; Described torque axis II one end is connected with cutting units gear spline, and the other end is connected with magnetic flow liquid overload protection arrangement by shaft coupling; The rotor spline joint of described torque axis I one end and motor, the other end is connected with magnetic flow liquid overload protection arrangement by shaft coupling; Described magnetic flow liquid overload protection arrangement is fixed on cutting units housing by connector.
Preferably, magnetic flow liquid overload protection arrangement is primarily of housing, and output shaft, bearing pedestal, power rotor, driven rotor I, driven rotor II, power shaft form; Described housing is made up of left shell and right shell body, described bearing pedestal is fixed on left and right housing by connector, described output shaft and power shaft run through left and right housing respectively, and the output shaft be positioned at outside housing and power shaft part are arranged on bearing pedestal respectively by bearing, described power rotor is placed in the middle of driven rotor I and driven rotor II, leaves the magnetic flow liquid working clearance between described power rotor and driven rotor I, driven rotor II; Described power rotor and power shaft link together, and driven rotor I and output shaft link together, and described driven rotor II is fixed together by connector and driven rotor I;
Described housing is also provided with permanent magnet, and described permanent magnet is positioned at position, middle, driven rotor about I both sides, the magnetic field that described permanent magnet produces, and arrives this by left and right housing, and the working interface between two housings forms the magnetic field perpendicular to housing side.
Further, oil sealing is provided with between described driven rotor II and power shaft.
Preferably, the magnetic flow liquid working clearance of magnetic flow liquid overload protection arrangement is 1mm ~ 3mm.
Preferably, power rotor all adopts the mode of welding to link together with power shaft, driven rotor I with output shaft.
Preferably, permanent magnet adopts high-performance Ne-Fe-B permanent magnet material to make.
Preferably, connector is bolt or screw.
Preferably, shaft coupling is spline coupling.
Compared with prior art, the present invention is provided with magnetic flow liquid overload protection arrangement independently, and torque axis is made two, and centre connects with magnetic flow liquid overload protection arrangement, and torque axis is still connected with motor and cutting units gear with spline.Under normal operating conditions, torque axis drives the main driven rotor synchronous axial system of magnetic flow liquid overload protection arrangement; when cutting units transships, the main driven rotor slippage of magnetic flow liquid overload protection arrangement runs; the torque axis that motor is connected rotates in nominal working range; reach the object of other actuated elements of protection coal-winning machine; when normal operating conditions adjusted to by coal-winning machine, magnetic flow liquid overload protection arrangement can realize synchronous axial system again automatically.When cutting units transships, not breakdown torque axle, can recover automatically; Unclamp spacing jump ring, torque axis can outwards movement, saves its original clutch function.The present invention can not cause torque failure, does not need to change torque axis, safe and reliable, is easy to safeguard, significantly reduces production cost, improve productivity ratio.Structure of the present invention is simple, is easy to manufacture, and low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is magnetic flow liquid overload protection arrangement structural representation of the present invention.
In figure: 1, torque axis II, 2, bearing, 3, cutting units gear, 4, shaft coupling; 5, magnetic flow liquid overload protection arrangement, 6, cutting units housing, 7, torque axis I, 8, motor; 9, rotor, 10, output shaft, 12, bearing pedestal; 13, connector, 14, left shell, 15, power rotor; 16, permanent magnet, 17, right shell body, 18, driven rotor I; 19, driven rotor II, 21, oil sealing, 22, power shaft.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique of the present invention, comprise cutting units gear 3, be arranged on the bearing 2 at cutting units gear 3 two ends, shaft coupling 4, cutting units housing 6 and motor 8, also comprise torque axis II 1, torque axis I 7 and magnetic flow liquid overload protection arrangement 5; Described torque axis II 1 one end and cutting units gear 3 spline joint, the other end is connected with magnetic flow liquid overload protection arrangement 5 by shaft coupling 4; Rotor 9 spline joint of described torque axis I 7 one end and motor 8, the other end is connected with magnetic flow liquid overload protection arrangement 5 by shaft coupling 4; Described magnetic flow liquid overload protection arrangement 5 is fixed on cutting units housing 6 by connector 13.
As shown in Figure 2, as first preferred version of the present invention to such scheme, described magnetic flow liquid overload protection arrangement 5 is primarily of housing, and output shaft 10, bearing pedestal 12, power rotor 15, driven rotor I 18, driven rotor II 19, power shaft 22 form, described housing is made up of left shell 14 and right shell body 17, described bearing pedestal 12 is fixed on a left side by connector 13, right shell body 14, on 17, described output shaft 10 and power shaft 22 run through left respectively, right shell body 14, 17, and the output shaft 10 be positioned at outside housing and power shaft 22 part are arranged on bearing pedestal 12 respectively by bearing 2, it is middle with driven rotor II 19 that described power rotor 15 is placed in driven rotor I 18, certain power rotor 15 also can be placed in any position between two driven rotors, but be positioned at centre position, magnetic field better effects if, described power rotor 15 and driven rotor I 18, the magnetic flow liquid working clearance is left between driven rotor II 19, described power rotor 15 links together with power shaft 22, and driven rotor I 18 and output shaft 10 link together, and described driven rotor II 19 is fixed together by connector 13 and driven rotor I 18,
Described housing is also provided with permanent magnet 16, described permanent magnet 16 is positioned at position, middle, driven rotor about I 18 both sides, the magnetic field that described permanent magnet 16 produces, arrives this by left and right housing 14,17, and the working interface between two housings forms the magnetic field perpendicular to housing side.
Technique scheme, runs at torque axis overload main driven rotor short time slippage, plays a protective role, recover synchronous operation, effectively protect torque axis under normal condition, extend the useful life of torque axis.In addition, the present invention, for the ease of installing this overload protection arrangement, has been made an independently structure, is fixed by housing and shearer's shell 6.
As the improvement of the present invention to technique scheme, between described driven rotor II 19 and power shaft 22, be provided with oil sealing 21, effectively prevent magnetic flow liquid and reveal, the safety and reliability of the equipment that further ensures in running.
As the present invention to technique scheme second preferred version, the magnetic flow liquid working clearance of described magnetic flow liquid overload protection arrangement 5 is 1mm ~ 3mm, when actual selecting; staff can need to select 1mm according to scene; 2mm or 3mm, certainly, also can choose the arbitrary numerical value of 1mm ~ 3mm.Working clearance is time too small, require that the machining accuracy of driving disc spacing pressing is high and assembly difficulty is large, also can reduce the mobility of magnetic flow liquid simultaneously, working clearance, time larger, can cause again magnetic circuit reluctance to increase, and magnetic field intensity declines, the moment of torsion transmitted also can decline, therefore choosing the working clearance is that 1mm-3mm is the most suitable, both not high to the requirement on machining accuracy of driving disc spacing pressing, and magnetic field intensity can not be caused again to decline.
As the present invention to technique scheme the 3rd preferred version, described power rotor 15 all adopts the mode of welding to link together with power shaft 22, driven rotor I 18 with output shaft 10, steadiness is better, not easily loosens or damages, effectively ensure that the operating reliability of equipment further.
As the present invention to technique scheme the 4th preferred version, described permanent magnet 16 adopts high-performance Ne-Fe-B permanent magnet material to make, and not power consumption, remanent magnetism is low, the life-span is long, reduces production cost.
As the present invention to technique scheme the 5th preferred version, described connector 13 is bolt or screw, easy for removal and installation, is convenient to change parts simultaneously.
Because spline transmitting torque is comparatively large, so shaft coupling 4 is preferably spline coupling, transmission effect is better.
At working interface place, the magnetic field that permanent magnet 16 produces is delivered to magnetic flow liquid working clearance place by left shell 14, right shell body 17, driven rotor I 18, driven rotor II 19, power rotor 15.The power that motor 8 produces is delivered to torque axis I 7 by spline and is being delivered to magnetic flow liquid overload protection arrangement 5 through spline coupling, is then delivered to torque axis II 1 by another spline coupling, passes to cutting units gear 3 by spline.Transmission of power passes to driven rotor I 18 by the magnetic flow liquid in the magnetic flow liquid working clearance again to the power shaft 22 of magnetic flow liquid overload protection arrangement 5, power rotor 15, driven rotor II 19, output shaft 10 pass again.During normal operating conditions; magnetic flow liquid can bear and transmit the moment of torsion of coming; thus achieve the synchronous axial system of power rotor 15 and driven rotor I 18, driven rotor II 19; when the load, magnetic flow liquid can not bear and transmit the moment of torsion of coming, and power rotor 15 and driven rotor I 18, driven rotor II 19 produce slippage; but motor 8 still rotates in nominal working range; thus protect other actuated element of coal-winning machine, extend the useful life of equipment, reduce production cost.
Claims (8)
1. the coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique, comprise cutting units gear (3), be arranged on the bearing (2) at cutting units gear (3) two ends, shaft coupling (4), cutting units housing (6) and motor (8), it is characterized in that, also comprise torque axis II (1), torque axis I (7) and magnetic flow liquid overload protection arrangement (5); Described torque axis II (1) one end and cutting units gear (3) spline joint, the other end is connected with magnetic flow liquid overload protection arrangement (5) by shaft coupling (4); Rotor (9) spline joint of described torque axis I (7) one end and motor (8), the other end is connected with magnetic flow liquid overload protection arrangement (5) by shaft coupling (4); Described magnetic flow liquid overload protection arrangement (5) is fixed on cutting units housing (6) by connector (13).
2. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 1, it is characterized in that, described magnetic flow liquid overload protection arrangement (5) is primarily of housing, and output shaft (10), bearing pedestal (12), power rotor (15), driven rotor I (18), driven rotor II (19), power shaft (22) form, described housing is made up of left shell (14) and right shell body (17), described bearing pedestal (12) is fixed on a left side by connector (13), right shell body (14, 17) on, described output shaft (10) and power shaft (22) run through left respectively, right shell body (14, 17), and the output shaft (10) be positioned at outside housing and power shaft (22) part are arranged on bearing pedestal (12) respectively by bearing (2), it is middle with driven rotor II (19) that described power rotor (15) is placed in driven rotor I (18), described power rotor (15) and driven rotor I (18), the magnetic flow liquid working clearance is left between driven rotor II (19), described power rotor (15) and power shaft (22) link together, driven rotor I (18) and output shaft (10) link together, and described driven rotor II (19) is fixed together by connector (13) and driven rotor I (18),
Described housing is also provided with permanent magnet (16), described permanent magnet (16) is positioned at driven rotor both sides upper and lower I (18), the magnetic field that described permanent magnet (16) produces, arrive this by left and right housing (14,17), and the working interface between two housings forms the magnetic field perpendicular to housing side.
3. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 2, is characterized in that, be provided with oil sealing (21) between described driven rotor II (19) and power shaft (22).
4. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 2, it is characterized in that, the magnetic flow liquid working clearance of described magnetic flow liquid overload protection arrangement (5) is 1mm ~ 3mm.
5. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 3; it is characterized in that, described power rotor (15) all adopts the mode of welding to link together with power shaft (22), driven rotor I (18) with output shaft (10).
6. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to any one of claim 2 ~ 5, is characterized in that, described permanent magnet (16) adopts high-performance Ne-Fe-B permanent magnet material to make.
7. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 6, it is characterized in that, described connector (13) is bolt or screw.
8. a kind of coal-winning machine Motor torque axle overload protection arrangement based on magnetic converting technique according to claim 7, it is characterized in that, described shaft coupling (4) is spline coupling.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128937.1A CN104779753A (en) | 2015-03-23 | 2015-03-23 | Coal mining machine motor torque axis overload protecting device based on magneto-rheological technology |
| AU2016236722A AU2016236722B2 (en) | 2015-03-23 | 2016-01-20 | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
| PCT/CN2016/071399 WO2016150242A1 (en) | 2015-03-23 | 2016-01-20 | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128937.1A CN104779753A (en) | 2015-03-23 | 2015-03-23 | Coal mining machine motor torque axis overload protecting device based on magneto-rheological technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104779753A true CN104779753A (en) | 2015-07-15 |
Family
ID=53621045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510128937.1A Pending CN104779753A (en) | 2015-03-23 | 2015-03-23 | Coal mining machine motor torque axis overload protecting device based on magneto-rheological technology |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104779753A (en) |
| AU (1) | AU2016236722B2 (en) |
| WO (1) | WO2016150242A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150242A1 (en) * | 2015-03-23 | 2016-09-29 | 中国矿业大学 | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
| CN109578460A (en) * | 2018-12-05 | 2019-04-05 | 吉林大学 | A kind of trapezoidal inner wall drum type brake shaft coupling based on magnetic rheological liquid |
| CN110576706A (en) * | 2018-06-08 | 2019-12-17 | 郑州宇通客车股份有限公司 | Vehicle motion state control method and vehicle |
| CN113027450A (en) * | 2021-04-30 | 2021-06-25 | 中国矿业大学 | Protection device and method for permanent magnet semi-direct drive cutting transmission system of coal mining machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795655B (en) * | 2017-11-23 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Rotor overload protection device, power transmission device and cold regenerator |
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2015
- 2015-03-23 CN CN201510128937.1A patent/CN104779753A/en active Pending
-
2016
- 2016-01-20 WO PCT/CN2016/071399 patent/WO2016150242A1/en active Application Filing
- 2016-01-20 AU AU2016236722A patent/AU2016236722B2/en not_active Ceased
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| CN101994768A (en) * | 2010-10-11 | 2011-03-30 | 武汉科技大学 | Permanent magnet type magnetorheological fluid ultimate torque coupling |
| CN102032312A (en) * | 2010-12-10 | 2011-04-27 | 重庆大学 | Magnetorheological fat-based self-powered damping adjustment device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016150242A1 (en) * | 2015-03-23 | 2016-09-29 | 中国矿业大学 | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
| CN110576706A (en) * | 2018-06-08 | 2019-12-17 | 郑州宇通客车股份有限公司 | Vehicle motion state control method and vehicle |
| CN110576706B (en) * | 2018-06-08 | 2021-10-12 | 郑州宇通客车股份有限公司 | Vehicle motion state control method and vehicle |
| CN109578460A (en) * | 2018-12-05 | 2019-04-05 | 吉林大学 | A kind of trapezoidal inner wall drum type brake shaft coupling based on magnetic rheological liquid |
| CN113027450A (en) * | 2021-04-30 | 2021-06-25 | 中国矿业大学 | Protection device and method for permanent magnet semi-direct drive cutting transmission system of coal mining machine |
| CN113027450B (en) * | 2021-04-30 | 2022-01-28 | 中国矿业大学 | Protection device and method for permanent magnet semi-direct drive cutting transmission system of coal mining machine |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2016236722B2 (en) | 2019-10-10 |
| WO2016150242A1 (en) | 2016-09-29 |
| AU2016236722A1 (en) | 2017-04-13 |
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