CN110131029B - Automatic water tank cleaning device with forward and reverse rotating fans - Google Patents

Automatic water tank cleaning device with forward and reverse rotating fans Download PDF

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Publication number
CN110131029B
CN110131029B CN201810129590.6A CN201810129590A CN110131029B CN 110131029 B CN110131029 B CN 110131029B CN 201810129590 A CN201810129590 A CN 201810129590A CN 110131029 B CN110131029 B CN 110131029B
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China
Prior art keywords
rotation
cone
reverse
reverse rotation
fan
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Active
Application number
CN201810129590.6A
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Chinese (zh)
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CN110131029A (en
Inventor
裴学昌
解建恒
裴书良
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Henan Dechang Machinery Manufacturing Co ltd
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Henan Dechang Machinery Manufacturing Co ltd
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Priority to CN201810129590.6A priority Critical patent/CN110131029B/en
Publication of CN110131029A publication Critical patent/CN110131029A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/06Cleaning; Combating corrosion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0633Details of the magnetic circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/06Cleaning; Combating corrosion
    • F01P2011/063Cleaning

Abstract

The invention discloses a device for automatically cleaning a water tank by a forward and reverse rotating fan. When the fan blades need to reversely rotate to clean sundries adsorbed by the water tank, the electromagnetic controller controls the carbon brush combination to be electrified, the electromagnetic coil is electrified through a wire to generate magnetic force, the whole body consisting of the reverse rotation outer cone, the fan blades and the forward rotation outer cone is adsorbed to move leftwards, and the deflector rod drives the axial sliding bearing and the fan blade inner sliding block to move leftwards and is pressed against the reverse rotation body friction ring to rotate; after the adsorbed sundries are cleaned, the electromagnetic coil is powered off, the whole body formed by the reverse rotation outer cone, the fan blades and the forward rotation outer cone moves rightwards under the axial thrust of wind power and the acting force of the spring, and is tightly combined with the forward rotation friction ring to execute forward rotation. In the aspect of structure, the device has simple structure because the existing structure does not need to be greatly changed; in the aspect of economic cost, the system has a simple structure and low cost of a single set, and can be widely applied to the combined harvesters of peanuts, wheat, rice, corn and the like.

Description

Automatic water tank cleaning device with forward and reverse rotating fans
Technical Field
The invention relates to agricultural machinery, in particular to a device for automatically cleaning a water tank by forward and reverse rotating fans of various combined harvesters of peanuts, wheat, rice and corns.
Background
At present combine's service environment is mostly the adverse circumstances that weeds, dust are many, because the engine heat dissipation generally adopts the circulating water heat dissipation to at water tank one side installation fan for circulating water cooling. The machine can adsorb many crops straw piece, dust etc. after working a period on the water tank, adsorbs a large amount of debris can influence the heat dissipation of water tank for a long time to lead to engine high temperature, influence the engine performance and damage the engine even.
In order to clean up the sundries adsorbed on the radiator, chinese patent CN205578099U discloses a "forward and reverse rotation device of agricultural mechanical radiator fan". When sundries are adsorbed on the radiator tank and need to be cleaned, the reverse rotation stay wire is pulled, the reverse rotation tensioning wheel tensions the reverse rotation belt, the forward rotation belt is loosened, and the fan rotates reversely at the moment to blow out the adsorbed sundries.
When the agricultural mechanical radiator fan forward and reverse rotation device reverses, the reverse rotation pull wire needs to be pulled manually, automatic reverse rotation cannot be achieved, the reverse rotation structure needs 2 tensioning wheels, the structure is complex and random, a belt easily jumps, and is damaged, and manual operation is complex and untimely.
Disclosure of Invention
The invention aims to provide a forward and reverse rotation fan automatic water tank cleaning device, which is used for solving the problems that the forward and reverse rotation device of a fan in the prior art is complex in structure and cannot automatically rotate reversely.
In order to solve the problems, the invention discloses an automatic water tank cleaning device with a forward and reverse rotating fan, which adopts the technical scheme that: a positive and negative rotation fan automatic cleaning water tank device comprises a raw engine water pump shaft head and a raw water pump belt pulley driving the raw engine water pump shaft head to rotate, wherein a positive rotation wheel groove is arranged on the raw water pump belt pulley, a positive rotation connecting sleeve is also arranged at the right end of the raw water pump belt pulley, a through hole extending axially is arranged on the positive rotation connecting sleeve, a fan blade inner slide block is arranged in the through hole, the fan blade inner slide block can axially slide left and right in the through hole, a radial hole extending radially is arranged on the fan blade inner slide block, a driving lever extending radially is arranged in the radial hole, a positive rotation rotor is arranged at the left end of the positive rotation connecting sleeve, the positive rotation rotor is fixedly connected to the raw water pump belt pulley through a positive rotation rotor connecting bolt, a positive rotation friction ring is bonded on the left side surface of the positive rotation rotor, a positive rotation, when the fan blades rotate forwards, the right side surfaces of the fan blades are pressed against the friction ring of the positive rotating body under the action of the spring, and the fan blades are driven to rotate forwards through the positive rotating rotor; and the axial thrust formed by the wind power of the forward rotation of the fan blades ensures the forward rotation, namely the binding force; the left end of the fan blade is provided with a reverse rotation outer cone, the directions of the reverse rotation outer cone and the forward rotation outer cone are opposite, the reverse rotation outer cone and the forward rotation outer cone are back-to-back installed to form an axially extending groove which is used for installing an axial sliding bearing, the axial sliding bearing can slide left and right in the groove, the left end of the reverse rotation outer cone is provided with a reverse rotation rotor belt pulley, the reverse rotation rotor belt pulley is provided with a reverse rotation pulley groove, the reverse rotation rotor belt pulley is rotatably installed on a raw engine water pump shaft head assembly through a reverse rotation rotor bearing, the surface of the cone of the reverse rotation rotor belt pulley is provided with a reverse rotation friction ring, the right end face of the reverse rotation rotor belt pulley is provided with an axially extending groove, an electromagnetic coil is installed in the groove, when the fan blade needs to reverse, and then the fan blades are driven to rotate reversely, and the reversely rotating wind power penetrates through the water tank and the heat dissipation cover in the reverse direction, so that the function of cleaning and adsorbing sundries is realized.
A fan blade spring used for pushing the fan blade inner sliding block to move rightwards is arranged in the positive rotation connecting sleeve.
The reverse rotation outer cone, the fan blades and the forward rotation outer cone are connected into a whole through the inner hexagon screws.
The friction ring of the positive and negative rotation body is riveted with the positive and negative rotation rotor through a rivet.
The electromagnetic coil is connected with a carbon brush combination through a wire, the carbon brush combination is supported and fixed through a carbon brush support, the carbon brush combination is connected with an electromagnetic controller through a carbon brush wire, and a switch is arranged on the carbon brush wire.
The positive and negative rotation of the fan is realized by combining electromagnetic control and mechanical control.
The beneficial technical effects produced by using the invention are as follows: when the fan blade 1 needs to reversely rotate to clean adsorbed impurities, the electromagnetic controller 3 controls the carbon brush combination 5 to be electrified, the electromagnetic coil 9 is electrified through a wire to generate magnetic force, the whole body consisting of the reverse rotation outer cone 8, the fan blade 1 and the forward rotation outer cone 11 is adsorbed to move leftwards, and the deflector rod 14 drives the axial sliding bearing 15 and the fan blade inner sliding block 13 to move leftwards and is pressed against the reverse rotation body friction ring 7 (namely the view shown in fig. 2). At the moment, the V-belt drives the reverse rotation rotor belt pulley 18 to rotate, and further drives the fan blades 1 to rotate reversely through the reverse rotation body friction ring 7, and reverse rotation wind penetrates through the water tank and the water tank cover to clean adsorbed impurities. After the adsorbed impurities are cleaned, the electromagnetic coil 9 is powered off, the whole body formed by the reverse rotation outer cone 8, the fan blades 1 and the forward rotation outer cone 11 moves rightwards, and the forward rotation wind power of the fan blades (1) forms an axial thrust force, so that the forward rotation binding force is better ensured. In the aspect of structure, the device has simple structure because the existing structure does not need to be greatly changed; in the aspect of economic cost, the system has simple structure and lower cost of a single set, and can be widely applied to various combine harvesters such as peanuts, wheat, rice, corns and the like.
Further, the fan blade spring 22 ensures that the whole body consisting of the reverse rotation outer cone 8, the fan blades 1 and the forward rotation outer cone 11 moves rightwards, so that the whole body can reliably move rightwards to be in place.
Furthermore, through the automatic reversal time of the electromagnetic control fan blades 1, the automatic and timely cleaning of sundries is realized.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view C-C of fig. 1.
In the figure: 1. fan blades, 2, a carbon brush support, 3, an electromagnetic controller, 4, a switch, 5, a carbon brush combination, 6, a copper ring, 7, a reverse rotation body friction ring, 8, a reverse rotation outer cone, 9, an electromagnetic coil, 10, a forward rotation body friction ring, 11, a forward rotation outer cone, 12, a forward rotation connecting sleeve, 13, a fan blade inner slide block, 14, a deflector rod, 15, an axial sliding bearing, 16, a forward rotation rotor, 17, a rivet, 18, a reverse rotation rotor belt pulley, 19, an adhesive, 20, an insulator, 21, a reverse rotation rotor bearing, 22, a fan blade spring, 23, a raw engine water pump shaft head, 24, a forward rotation rotor connecting bolt, 25, a raw water pump belt pulley, 26, a carbon brush lead, 27 and an inner hexagonal screw.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
An automatic water tank cleaning device for a forward and reverse rotating fan is shown in figure 1 and comprises fan blades 1, a carbon brush support 2 and a shifting rod 14.
As shown in fig. 2 (this view is a view when the fan blades 1 rotate reversely), the automatic cleaning device for forward and reverse rotating fans further comprises a raw engine water pump shaft head 23, a raw water pump belt pulley 25 for driving the raw engine water pump shaft head 23 to rotate, and a forward rotating pulley groove for installing a double-sided triangular belt is arranged on the raw water pump belt pulley 25. The right end of the raw water pump belt pulley 25 is further provided with a forward rotation connecting sleeve 12, a through hole extending axially (namely, in the left-right direction) is formed in the forward rotation connecting sleeve 12, a fan blade spring 22 and a fan blade inner sliding block 13 are sequentially arranged in the through hole from left to right, and the fan blade inner sliding block 13 can axially slide left and right in the through hole. The fan blade inner slide block 13 is provided with a radial hole extending in the radial direction, a shifting rod 14 extending in the radial hole in the radial direction is arranged in the radial hole, the left end of the forward rotation connecting sleeve 12 is provided with a forward rotation rotor 16, and the forward rotation rotor 16 is fixedly connected to a raw water pump belt pulley 25 through a forward rotation rotor connecting bolt 24. A positive rotation rotor friction ring 10 is bonded to the left side surface of the positive rotation rotor 16, and both are riveted with a rivet 17 in order to firmly fix the positive rotation rotor 16 to the positive rotation rotor 10. The left end of the forward rotation rotor 16 is provided with a bowl-shaped forward rotation outer cone 11, and the left end of the forward rotation outer cone 11 is provided with a fan blade 1. When the fan blade 1 needs to rotate forwards, the right side surface of the fan blade 1 presses against the friction ring 10 of the rotating body, and the fan blade 1 is driven to rotate forwards through the forward rotation rotor 16.
The left end of the fan blade 1 is provided with a bowl-shaped reverse rotation outer cone 8, and the directions of the reverse rotation outer cone 8 and the forward rotation outer cone 11 are opposite (the reverse rotation outer cone 8 and the forward rotation outer cone 11 are arranged back to back); the reverse rotation outer cone 8, the fan blades 1, and the forward rotation outer cone 11 are integrally connected by hexagon socket screws 27, and can be moved in the left-right axial direction as a whole. The reverse rotation outer cone 8 and the forward rotation outer cone 11 are mounted back to form an axially extending groove for mounting the axial sliding bearing 15, the axial sliding bearing 15 can slide left and right in the groove, and the sliding distance is generally in a small clearance.
The left end of the reverse rotation outer cone 8 is provided with a reverse rotation rotor belt pulley 18, and the reverse rotation rotor belt pulley 18 is rotatably arranged on a water pump shaft head 23 of the original engine through a reverse rotation rotor bearing 21. The counter rotor pulley 18 is provided with a counter sheave (i.e., a tension pulley as a double-sided V belt) for mounting the double-sided V belt. The upper side of the counter-rotating rotor pulley 18 is bonded with the counter-rotating friction ring 7 by an adhesive 19. The right end face of the reverse rotor belt pulley 18 is provided with an axially extending groove, an electromagnetic coil 9 is installed in the groove, when the fan blade 1 needs to be reversed, the electromagnetic coil 9 generates magnetic force after being electrified, the reverse outer cone 8 is attracted to move leftwards and is pressed on the reverse friction ring 7, and then the fan blade 1 is driven to be reversed.
The forward and reverse rotation of the fan is realized by an electromagnetic control mode (but not limited to the electromagnetic control mode, and can also be realized by a mechanical control mode): the electromagnetic coil 9 is connected with a carbon brush combination 5 and a copper ring 6 through a wire, and the copper ring 6 is positioned on the right end face of the carbon brush combination 5. The carbon brush combination 5 is supported and fixed through the carbon brush support 2, and the carbon brush combination 5 is connected with the electromagnetic controller 3 through a carbon brush lead 26. The carbon brush wire 26 is provided with a switch 4. When the combined cargo airplane runs on a road (does not work in the field), the sundries adsorbed on the radiator are less, the heat dissipation is not influenced, and the switch 4 can be switched off, so that the fan blades only rotate forwards.
In addition, an insulator 20 is provided on the left end surface of the reversing rotor pulley 18 so that the reversing rotor pulley 18 is not electrified after the carbon brush assembly 5 is energized.
The electromagnetic controller 3 controls the reverse rotation time of the fan blade 1, and the adsorbed impurities can be cleaned up by the short reverse rotation time of the fan blade 1.
The principle applied by the above embodiment is: according to the ascending principle of the helicopter, blades of a helicopter rotor rotate at a high speed, and each blade can generate respective floating lifting force and has respective overall lifting force in the relative air movement process.
The working process of the above embodiment is as follows: when the fan blades 1 need to rotate forwardly to dissipate heat, the raw water pump belt pulley 25 is driven to rotate by the double-faced triangular belt, and the raw water pump belt pulley 25 is integrally connected with the forward rotation rotor 16 through the forward rotation rotor connecting bolt 24 to further drive the forward rotation rotor 16 to rotate forwardly, at the moment, the forward rotation outer cone 11 is pressed on the forward rotation friction ring 10 on the forward rotation rotor 16, and further the fan blades 1 are driven to rotate forwardly to suck air and penetrate through the water tank to dissipate heat.
When the fan blade 1 needs to reversely rotate to clean adsorbed impurities, the electromagnetic controller 3 controls the carbon brush combination 5 to be electrified, the electromagnetic coil 9 is electrified through a lead to generate magnetic force, the whole body consisting of the reverse rotation outer cone 8, the fan blade 1 and the forward rotation outer cone 11 is adsorbed to move leftwards, the deflector rod 14 drives the axial sliding bearing 15 and the fan blade inner sliding block 13 to move leftwards, and the fan blade inner sliding block 13 compresses the fan blade spring 22 and presses against the reverse rotation friction ring 7 (namely the view shown in fig. 2). At the moment, the double-sided V belt is reversely buckled on the reverse rotation rotor belt pulley 18 to drive the reverse rotation rotor belt pulley 18 (a tension pulley) to rotate, and then the reverse rotation friction ring 7 drives the fan blades 1 to reversely rotate, so that sundries adsorbed on the water tank and the water tank cover are cleaned. After the adsorbed sundries are cleaned, the electromagnetic coil 9 is automatically powered off, the whole body consisting of the reverse rotation outer cone 8, the fan blades 1 and the forward rotation outer cone 11 moves rightwards, in order to ensure that the whole body can reliably move rightwards to a proper position, the inner sliding block 13 of the fan blades is pushed to move rightwards by the elastic force of the fan blade springs 22, the whole body is further driven to move rightwards, and the wind power of the forward rotation of the fan blades 1 forms an axial thrust force, so that the forward rotation binding force is better ensured.

Claims (6)

1. The utility model provides an automatic water tank cleaning device of fan is just reversing, includes former engine water pump spindle nose (23) and drives former engine water pump spindle nose (23) pivoted former water pump belt pulley (25), its characterized in that: a forward rotation wheel groove used for mounting a triangular belt is arranged on the raw water pump belt pulley (25), a forward rotation connecting sleeve (12) is mounted at the right end of the raw water pump belt pulley (25), a through hole extending axially is formed in the forward rotation connecting sleeve (12), a fan blade inner sliding block (13) is arranged in the through hole, the fan blade inner sliding block (13) can axially slide left and right in the through hole, a radial hole extending radially is formed in the fan blade inner sliding block (13), a deflector rod (14) extending radially is arranged in the radial hole, a forward rotation rotor (16) is mounted at the left end of the forward rotation connecting sleeve (12), the forward rotation rotor (16) is fixedly connected to the raw water pump belt pulley (25) through a forward rotation rotor connecting bolt (24), a forward rotation friction ring (10) is bonded on the surface of a left cone of the forward rotation rotor (16), and a forward rotation outer cone (11), the fan blades (1) are installed at the left end of the forward rotation outer cone (11), when the fan blades (1) rotate forward, the fan blades (1) are pressed against the right side face of the forward rotation friction ring (10) under the action of the spring (22), and the forward rotation rotor (16) drives the fan blades (1) to rotate forward; and the axial thrust formed by the wind power of the fan blades (1) rotating forward also ensures the forward rotation, namely the binding force; the left end of the fan blade (1) is provided with a reverse rotation outer cone (8), the directions of the reverse rotation outer cone (8) and the forward rotation outer cone (11) are opposite, the reverse rotation outer cone (8) and the forward rotation outer cone (11) are back-to-back installed to form an integrated axially extending groove for installing an axial sliding bearing (15), the axial sliding bearing (15) can slide left and right in the groove, the left end of the reverse rotation outer cone (8) is provided with a reverse rotation rotor belt pulley (18), the reverse rotation rotor belt pulley (18) is rotatably installed on a raw engine water pump shaft head (23) assembly through a reverse rotation rotor bearing (21), the reverse rotation rotor belt pulley (18) is provided with a wheel groove for reverse rotation, the surface of the reverse rotation rotor belt pulley (18) is provided with a reverse rotation friction ring (7), the right end surface of the reverse rotation rotor belt pulley (18) is provided with an axially extending groove, when the fan blades (1) need to be reversely rotated, the electromagnetic coil (9) generates magnetic force after being electrified, the reverse rotation outer cone (8) is attracted to move leftwards and is pressed on the reverse rotation friction ring (7), then the fan blades (1) are driven to reversely rotate, and reverse wind force reversely penetrates through the water tank and the heat dissipation cover, so that the function of cleaning and adsorbing sundries is realized.
2. The apparatus of claim 1, wherein the water tank is cleaned by the forward and reverse rotating fans, and the apparatus further comprises: a fan blade spring (22) for pushing the fan blade inner sliding block (13) to move rightwards is arranged in the positive rotation connecting sleeve (12).
3. The apparatus of claim 2, wherein the water tank is cleaned by the forward and reverse rotating fans, and the apparatus further comprises: the reverse rotation outer cone (8), the fan blades (1) and the forward rotation outer cone (11) are connected into a whole through inner hexagon screws (27).
4. The apparatus of claim 3, wherein the water tank is cleaned by the forward and reverse rotating fans, and the apparatus further comprises: the positive and negative rotation body friction ring (10) is riveted with the positive and negative rotation rotor (16) through a rivet (17).
5. The device for automatically cleaning the water tank by the forward and reverse rotating fan according to any one of claims 1 to 4, wherein: the electromagnetic coil (9) is connected with a carbon brush combination (5) through a wire, the carbon brush combination (5) is supported and fixed through a carbon brush support (2), the carbon brush combination (5) is connected with an electromagnetic controller (3) through a carbon brush wire (26), and a switch (4) is arranged on the carbon brush wire (26).
6. The device for automatically cleaning the water tank by the forward and reverse rotating fan according to any one of claims 1 to 4, wherein: including the forward and reverse rotation of the fan, is achieved through mechanical control.
CN201810129590.6A 2018-02-08 2018-02-08 Automatic water tank cleaning device with forward and reverse rotating fans Active CN110131029B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810129590.6A CN110131029B (en) 2018-02-08 2018-02-08 Automatic water tank cleaning device with forward and reverse rotating fans

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Application Number Priority Date Filing Date Title
CN201810129590.6A CN110131029B (en) 2018-02-08 2018-02-08 Automatic water tank cleaning device with forward and reverse rotating fans

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CN110131029A CN110131029A (en) 2019-08-16
CN110131029B true CN110131029B (en) 2020-07-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289223A (en) * 1978-06-30 1981-09-15 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co. Shiftable friction clutch for gear drives
CN2634180Y (en) * 2002-06-26 2004-08-18 王友山 Friction type clutch
CN101535658A (en) * 2006-11-08 2009-09-16 出洋电气株式会社 Contra-rotating axial blower
CN201687746U (en) * 2010-06-03 2010-12-29 德清县金宇达电气有限公司 Positive and negative rotation fan
CN202023747U (en) * 2011-02-21 2011-11-02 建准电机工业股份有限公司 Cooling fan with forward and backward rotating functions
CN107313849A (en) * 2017-08-29 2017-11-03 浙江耐士伦机械有限公司 One kind commutation electromagnetic fan clutch assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8360219B2 (en) * 2010-04-26 2013-01-29 Kit Masters, Inc. Clutch system and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289223A (en) * 1978-06-30 1981-09-15 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co. Shiftable friction clutch for gear drives
CN2634180Y (en) * 2002-06-26 2004-08-18 王友山 Friction type clutch
CN101535658A (en) * 2006-11-08 2009-09-16 出洋电气株式会社 Contra-rotating axial blower
CN201687746U (en) * 2010-06-03 2010-12-29 德清县金宇达电气有限公司 Positive and negative rotation fan
CN202023747U (en) * 2011-02-21 2011-11-02 建准电机工业股份有限公司 Cooling fan with forward and backward rotating functions
CN107313849A (en) * 2017-08-29 2017-11-03 浙江耐士伦机械有限公司 One kind commutation electromagnetic fan clutch assembly

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