CN105703518A - Direct-connection automatic-cooling type electric drum for electric motor - Google Patents
Direct-connection automatic-cooling type electric drum for electric motor Download PDFInfo
- Publication number
- CN105703518A CN105703518A CN201610247831.8A CN201610247831A CN105703518A CN 105703518 A CN105703518 A CN 105703518A CN 201610247831 A CN201610247831 A CN 201610247831A CN 105703518 A CN105703518 A CN 105703518A
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- CN
- China
- Prior art keywords
- support frame
- cylinder
- main shaft
- inner support
- end cap
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- 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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a direct-connection automatic-cooling type electric drum for an electric motor and relates to the electric drum. The conventional electric drum is complex in radiating mode, difficult to maintain and needs to consume a large amount of expenditure and time for realizing a cooling process; meanwhile, the cooling effect of the existing electric drum in the radiating process is not good enough; the un-radiated afterheat speeds up abrasion of reduction gears, and shortens the service life of the electric motor as well; and high-power output of the electric motor is affected. According to the direct-connection automatic-cooling type electric drum for the electric motor provided by the invention, two impeller type end covers are detachably connected with the two ends of the drum body; a main shaft penetrates through one impeller type end cover and the drum body in sequence to be connected with the other impeller type end cover and a frequency conversion controller; a motor rotor is arranged on the inner wall of the drum body; a motor stator is arranged on the main shaft in a sleeving manner; multiple blades are arranged between an outer supporting frame and an inner supporting frame; one end, close to the outer supporting frame, of each blade is fixedly connected with the outer supporting frame; and one end, close to the inner supporting frame, of each blade is fixedly connected with the inner supporting frame. The direct-connection automatic-cooling type electric drum is used as the driving apparatus for a band type conveyer or other equipment of the same kind.
Description
Technical field
The present invention relates to a kind of motorized pulleys, belong to machine design and manufacture technical field。
Background technology
At present, motorized pulleys great majority adopt motor to drive deceleration device, then are coupled the kind of drive of cylinder by deceleration device, and it is low, difficult in maintenance that this structure also exists structure complexity, system reliability, and cost is high, stable drive ratio, the shortcoming being not easy to speed governing。Major part motorized pulleys adopt oil injection type, if sealing bad, directly affect the coefficient of friction between cylinder and conveyer belt, cause and easily skid between conveyer belt and cylinder, affect the use of ribbon conveyer, if heat dispersion is bad, affect the service life of motor, also aggravate the abrasion of reduction gearing, so, owing to radiating condition limits, present structure existence is unfavorable for realizing powerful weakness。
Summary of the invention
It is an object of the invention to provide a kind of motor direct connection self cooled motorized pulleys, radiating mode to solve conventional electric cylinder process that is complicated, difficult in maintenance and that realize cooling down needs to expend substantial amounts of expense and time, existing motorized pulleys cooling effect in radiation processes is not thorough simultaneously, the waste heat not shed not only aggravates the abrasion of reduction gearing, have an effect on the service life of motor, the problem being unfavorable for realizing the high-power output of motor。
The present invention solves that above-mentioned technical problem adopts the technical scheme that:
A kind of motor direct connection self cooled motorized pulleys, it includes main shaft, motor stator, rotor, cylinder, frequency-variable controller and two vane type end caps, said two vane type end cap is detachably connected on the two ends of cylinder respectively, described main shaft sequentially passes through a described vane type end cap along the axial direction of cylinder, cylinder is connected with frequency-variable controller with vane type end cap another described, described rotor is arranged on the inwall of cylinder along the radial direction of cylinder, described motor stator is positioned at cylinder and it is sleeved on main shaft, described rotor is arranged with motor stator relative engagement;
The structure of two vane type end caps is identical, each vane type end cap includes outer support frame, inner support frame and multiple blade, multiple blades are distributed between outer support frame and inner support frame, each blade is fixed with outer support frame near one end of outer support frame and is connected, each blade is fixed with inner support frame near one end of inner support frame and is connected。
The method have the advantages that
1. the present invention is by adopting frequency-variable controller, eliminate reducing gear, making the mechanical structure system driving cylinder greatly simplified, the feature of lightweight can make transmission efficiency be increased to the 30% to 50% of existing motorized pulleys, and power attenuation reduces simultaneously, reliability is high, failure rate is low and easy for installation。
2. make cylinder when rotary work by two vane type end caps and removably connecting of cylinder, drive two synchronous rotations of vane type end cap, make to be formed between cylinder and two vane type end caps distinguished and admirable, owing to the rotation direction of two vane type end caps is identical and direction of rotation is consistent, the vane type end cap making the distinguished and admirable side from cylinder flows into, flow out from another vane type end cap of the opposite side of cylinder, thus realizing the cooling effect of the motor stator to inner barrel and rotor。
3., owing to present configuration is compact and simple, not only reduce equipment manufacturing cost, also save maintenance cost。
4., owing to present invention eliminates actuating device, improve heat dispersion and ensure that inner barrel has enough spaces, it is easy to accomplish the high-power output of motor。
5. the present invention is as the driving device of ribbon conveyer or other same categories of device, is widely used in the transit link of mine, metallurgy, chemical industry, coal, building materials, electric power, grain and other relevant industries。
Accompanying drawing explanation
Fig. 1 is the main TV structure profile of the present invention;
Fig. 2 is the main TV structure profile of vane type end cap 5;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the profile at B-B place in Fig. 2;
Fig. 5 is the profile at A-A place in Fig. 3;
Fig. 6 is the profile at C-C place in Fig. 3;
Fig. 7 is the profile at D-D place in Fig. 3;
Fig. 8 is the profile at E-E place in Fig. 3;
Fig. 9 is the profile at F-F place in Fig. 3;
Figure 10 is the profile at G-G place in Fig. 3。
Detailed description of the invention
Detailed description of the invention one: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10 illustrates present embodiment, present embodiment includes main shaft 1, motor stator 2, rotor 3, cylinder 4, frequency-variable controller and two vane type end caps 5, said two vane type end cap 5 is detachably connected on the two ends of cylinder 4 respectively, described main shaft 1 sequentially passes through a described vane type end cap 5 along the axial direction of cylinder 4, cylinder 4 is connected with frequency-variable controller with vane type end cap 5 another described, described rotor 3 is arranged on the inwall of cylinder 4 along the radial direction of cylinder 4, described motor stator 2 is positioned at cylinder 4 and it is sleeved on main shaft 1, described rotor 3 is arranged with motor stator 2 relative engagement;
The structure of two vane type end caps 5 is identical, each vane type end cap 5 includes outer support frame 5-1, inner support frame 5-2 and multiple blade 5-3, multiple blade 5-3 are distributed between outer support frame 5-1 and inner support frame 5-2, each blade 5-3 fixes with outer support frame 5-1 near one end of outer support frame 5-1 and is connected, each blade is fixed with inner support frame 5-2 near one end of inner support frame 5-2 and is connected。
The present invention adopts main shaft 1, motor stator 2, rotor 3 and frequency-variable controller to complement each other to form stator and rotator type frequency control motor, rotor 3 is arranged on the inwall of cylinder 4, motor stator 2 is arranged on main shaft 1, wherein, main shaft 1 is a kind of axis, near one end of frequency-variable controller, processing has deep hole to its axis body, for break-through cable。
In the present invention, one end of main shaft 1 is connected to wire junction box 12, and described frequency-variable controller is connected with main shaft 1 by rosette 12, thus realizing the frequency-variable controller control to main shaft 1 slewing rate。
The outer circumference surface of middle cylinder body 4 of the present invention is provided with conveyer belt, realizes the transmission effect to conveyer belt by the rotation of cylinder 4。
Detailed description of the invention two: present embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 3, the profile of the 5-1 of outer support frame described in present embodiment is identical with the profile of inner support frame 5-2, outer support frame 5-1 is detachably connected on the end face of cylinder 4 by multiple bolts 6, and described main shaft 1 is located in inner support frame 5-2 along the axial direction of cylinder 4。Convenient disassembly is so set, it is simple to cylinder 4 is cleared up and safeguards。Other NM structures and annexation and detailed description of the invention one are identical。
The shape of detailed description of the invention three: present embodiment is described in conjunction with Fig. 2 and Fig. 3, the shape of the 5-1 of outer support frame described in present embodiment and inner support frame 5-2 is circular frame, and described outer support frame 5-1 and inner support frame 5-2 is coaxially disposed。Other NM structures and annexation and detailed description of the invention one or two are identical。
Detailed description of the invention four: present embodiment is described in conjunction with Fig. 1, Fig. 2 and Fig. 3, the two ends of main shaft 1 described in present embodiment are respectively set with a bearing 7, the bearing 7 by this end is corresponding of often holding of described main shaft 1 is connected with the inner support frame 5-2 in vane type end cap 5, and multiple blade 5-3 are distributed between outer support frame 5-1 and inner support frame 5-2 along the radial direction of outer support frame 5-1。
In present embodiment, the two ends of main shaft 1 are each provided with a bearing 7, and the two ends of main shaft 1 are respectively arranged with a vane type end cap 5。Often holding of main shaft 1 is connected by the inner support frame 5-2 in bearing 7 that this end the is corresponding vane type end cap 5 close with this end。Other NM structures and annexation and detailed description of the invention three are identical。
Detailed description of the invention five: present embodiment is described in conjunction with Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, in present embodiment, the blade face of each blade 5-3 is θ with the angle of inner support frame 5-2 axial direction, and the span of angle theta is 15 ° to 45 °。The wing blades being designed with distortion type of blade 5-3, such blade be shaped as spiral type, known according to Fig. 6 to Figure 10, blade 5-3 is at C-C, D-D, E-E, the shape of cross section that F-F and G-G place intercepts is different, such structure is compared with straight blade, significantly more efficient spiral-flow type can be produced distinguished and admirable, can effectively increase distinguished and admirable intensity and motion multidirectional, form 360 ° of eddy flow radiating effects, such distinguished and admirable can strengthen distinguished and admirable flow velocity, increase the contact area of hot-air and blade 5-3, reach the requirement that the present invention is thoroughly dispelled the heat, also there is the effect of back-up roller cylinder wheel hub simultaneously。Other NM structures and annexation and detailed description of the invention four are identical。
Detailed description of the invention six: present embodiment is described in conjunction with Fig. 3, present embodiment also includes two bearing end caps 8, each inner support frame 5-2 is to there being a bearing end cap 8, on one end that each bearing end cap 8 is arranged in its corresponding inner support frame 5-2 away from cylinder 4。
Dust-proof effect is not only played in the setting of present embodiment middle (center) bearing end cap 8, additionally it is possible to strengthen the security reliability of the present invention。Other NM structures and annexation and detailed description of the invention one or five are identical。
Detailed description of the invention seven: present embodiment is described in conjunction with Fig. 1 and Fig. 6, also includes two felt collar oil seal ring pads 9 in present embodiment, each felt collar oil seal ring pad 9 is sleeved on main shaft 1 and this felt collar oil seal ring pad 9 is positioned at bearing end cap 8。
Middle (center) bearing 7 of the present invention is rolling bearing, rolling bearing is made to realize grease lubrication mode by the setting of felt collar oil seal ring pad 9, solve the problem of the reduction of coefficient of friction between cylinder 4 and the conveyer belt produced by oil cooling motorized pulleys leakage of oil, it is easy to ensure the normal operation of the present invention。Other NM structures and annexation and detailed description of the invention six are identical。
Detailed description of the invention eight: present embodiment is described in conjunction with Fig. 4 and Fig. 7, present embodiment also includes two hold-down supports 10 and two suspension ring 11, two hold-down supports 10 are arranged on the both sides of cylinder 4 respectively along the axial direction of cylinder 4, the two ends of described main shaft 1 are each to there being a hold-down support 10, described main shaft 1 often hold the hold-down support 10 through its correspondence, the top of each hold-down support 10 is provided with suspension ring 11。
In present embodiment, two hold-down supports 10 play effect that is cylinder 4 is fixing and that support, and two suspension ring 11 play is easy to the effect that the present invention is attached with extraneous works and positions。Being set with circlip 14 away from one end of wire junction box 12 in main shaft 1, hold-down support 10 phase that this circlip 14 is adjacent to is adjacent to。Other NM structures and annexation and detailed description of the invention seven are identical。
The operation principle of the present invention:
The present invention adopts VFC principle, it is achieved the normal operation rotating speed of cylinder 4, and rotating speed is n=60f/P, and the f in this formula is the frequency of alternating current power supply, and P is motor number of pole-pairs。
The system heat balance equation of the present invention is
Qdt=Cd τ+A τ dt
The heat that in formula, Q motorized pulleys send within the unit interval, J/s;
The specific heat capacity of C motor, namely makes motor stator and temperature of rotor raise heat 1 DEG C required, J/s in the unit interval;
The coefficient of heat transfer of A motorized pulleys, when namely motorized pulleys differ 1 DEG C with ambient air temperature, the heat that in the unit interval, motorized pulleys air towards periphery distributes, J/s DEG C;
The temperature rise of τ motor, DEG C。
When normal operation of the present invention time, within the unit interval, driving the motor electric energy loss that cylinder 4 rotates to be largely converted into heat Q, wherein, a part of heat Cd τ is absorbed by motor stator 2, rotor 3 so that own temperature of the present invention raises d τ;Another part is A τ dt by the heat that the mode of convection current air towards periphery distributes。
The coefficient of heat transfer A factor affecting motorized pulleys is very complicated, and it is by the impact of the factors such as rate of flow of fluid, area of dissipation, the shape of blade, established angle and number。The present invention adopts motor direct connection self cooled structural design, cancel reducing gear, end cap adopts vane type structure to dispel the heat, design by this structure, substantially increase the coefficient of heat transfer A of motorized pulleys, making to meet motor temperature rise less than allowing temperature increase requirement, the concrete number of blade can be determined by testing according to power of motor and caloric value。
Work process:
The two ends of main shaft 1 are respectively and fixedly installed to two hold-down supports 10 of the left and right sides, cylinder 4 is connected with two vane type end caps 5, rotor 3 is arranged on the inwall of cylinder 4, motor stator 2 is arranged on main shaft 1, the motor just constituting a frequency control is so set, make structure is greatly simplified, when wire junction box 12 is energized to motor stator 2 through cord channel, motor stator 2 and the sensing of rotor 3 mutual electromagnetic produce rotating excitation field makes cylinder 4 rotate along the radial direction of main shaft 1, under the control of frequency-variable controller, cylinder 4 drives two vane type end caps 5 to rotate, multiple blade 5-3 is made to produce the distinguished and admirable of flowing, thus good cooling effect is played in the inside of cylinder 4。
Claims (8)
1. motor direct connection self cooled motorized pulleys, it is characterized in that: it includes main shaft (1), motor stator (2), rotor (3), cylinder (4), frequency-variable controller and two vane type end caps (5), said two vane type end cap (5) is detachably connected on the two ends of cylinder (4) respectively, described main shaft (1) sequentially passes through a described vane type end cap (5) along the axial direction of cylinder (4), cylinder (4) is connected with frequency-variable controller with vane type end cap (5) another described, described rotor (3) is arranged on the inwall of cylinder (4) along the radial direction of cylinder (4), described motor stator (2) is positioned at cylinder (4) and it is sleeved on main shaft (1), described rotor (3) is arranged with motor stator (2) relative engagement;
The structure of two vane type end caps (5) is identical, each vane type end cap (5) includes outer support frame (5-1), inner support frame (5-2) and multiple blade (5-3), multiple blades (5-3) are distributed between outer support frame (5-1) and inner support frame (5-2), each blade (5-3) is fixed with outer support frame (5-1) near one end of outer support frame (5-1) and is connected, each blade is fixed with inner support frame (5-2) near one end of inner support frame (5-2) and is connected。
2. a kind of motor direct connection self cooled motorized pulleys according to claim 1, it is characterized in that: the profile of described outer support frame (5-1) is identical with the profile of inner support frame (5-2), outer support frame (5-1) is detachably connected on the end face of cylinder (4) by multiple bolts (6), and described main shaft (1) is located in inner support frame (5-2) along the axial direction of cylinder (4)。
3. a kind of motor direct connection self cooled motorized pulleys according to claim 1 and 2, it is characterized in that: the shape of described outer support frame (5-1) and the shape of inner support frame (5-2) are circular frame, and described outer support frame (5-1) and inner support frame (5-2) are coaxially disposed。
4. a kind of motor direct connection self cooled motorized pulleys according to claim 3, it is characterized in that: the two ends of described main shaft (1) are respectively set with a bearing (7), the bearing (7) by this end is corresponding of often holding of described main shaft (1) is connected with the inner support frame (5-2) in vane type end cap (5), and multiple blades (5-3) are distributed between outer support frame (5-1) and inner support frame (5-2) along the radial direction of outer support frame (5-1)。
5. a kind of motor direct connection self cooled motorized pulleys according to claim 4, it is characterized in that: the angle of the blade face of each blade (5-3) and inner support frame (5-2) axial direction is θ, and the span of angle theta is 15 ° to 45 °。
6. a kind of motor direct connection self cooled motorized pulleys according to claim 1 or 5, it is characterized in that: it also includes two bearing end caps (8), each inner support frame (5-2) is to there being a bearing end cap (8), on one end that each bearing end cap (8) is arranged in its corresponding inner support frame (5-2) away from cylinder (4)。
7. a kind of motor direct connection self cooled motorized pulleys according to claim 6, it is characterized in that: it also includes two felt collars oil seal ring pad (9), each felt collar oil seal ring pad (9) is sleeved on main shaft (1) and this felt collar oil seal ring pad (9) is positioned at bearing end cap (8)。
8. a kind of motor direct connection self cooled motorized pulleys according to claim 7, it is characterized in that: it also includes two hold-down supports (10) and two suspension ring (11), two hold-down supports (10) are arranged on the both sides of cylinder (4) respectively along the axial direction of cylinder (4), the two ends of described main shaft (1) are each to there being a hold-down support (10), the hold-down support (10) often held through its correspondence of described main shaft (1), the top of each hold-down support (10) is provided with a suspension ring (11)。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610247831.8A CN105703518A (en) | 2016-04-20 | 2016-04-20 | Direct-connection automatic-cooling type electric drum for electric motor |
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CN201610247831.8A CN105703518A (en) | 2016-04-20 | 2016-04-20 | Direct-connection automatic-cooling type electric drum for electric motor |
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CN105703518A true CN105703518A (en) | 2016-06-22 |
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CN201610247831.8A Pending CN105703518A (en) | 2016-04-20 | 2016-04-20 | Direct-connection automatic-cooling type electric drum for electric motor |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108155758A (en) * | 2018-03-09 | 2018-06-12 | 上海惠深工具科技有限公司 | From cooling external rotor electric machine |
CN110266131A (en) * | 2019-07-22 | 2019-09-20 | 河北新四达电机股份有限公司 | Permanent magnetic pulley all-in-one machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07102970A (en) * | 1993-10-01 | 1995-04-18 | Aisin Seiki Co Ltd | Vehicular air blower |
CN201100944Y (en) * | 2006-12-27 | 2008-08-13 | 鲁泊凡 | Wheel hub motor for electric car |
CN102447349A (en) * | 2010-10-09 | 2012-05-09 | 付强 | Axial-flow air-cooled external rotor motor |
-
2016
- 2016-04-20 CN CN201610247831.8A patent/CN105703518A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07102970A (en) * | 1993-10-01 | 1995-04-18 | Aisin Seiki Co Ltd | Vehicular air blower |
CN201100944Y (en) * | 2006-12-27 | 2008-08-13 | 鲁泊凡 | Wheel hub motor for electric car |
CN102447349A (en) * | 2010-10-09 | 2012-05-09 | 付强 | Axial-flow air-cooled external rotor motor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108155758A (en) * | 2018-03-09 | 2018-06-12 | 上海惠深工具科技有限公司 | From cooling external rotor electric machine |
CN110266131A (en) * | 2019-07-22 | 2019-09-20 | 河北新四达电机股份有限公司 | Permanent magnetic pulley all-in-one machine |
CN110266131B (en) * | 2019-07-22 | 2024-08-13 | 河北新四达电机股份有限公司 | Permanent magnet roller integrated machine |
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