CN102487645B - Negative pressure fan transmission device - Google Patents
Negative pressure fan transmission device Download PDFInfo
- Publication number
- CN102487645B CN102487645B CN2011103719997A CN201110371999A CN102487645B CN 102487645 B CN102487645 B CN 102487645B CN 2011103719997 A CN2011103719997 A CN 2011103719997A CN 201110371999 A CN201110371999 A CN 201110371999A CN 102487645 B CN102487645 B CN 102487645B
- Authority
- CN
- China
- Prior art keywords
- belt pulley
- transmission device
- negative pressure
- pressure fan
- fixed head
- 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.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D2043/145—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention relates to a negative pressure fan transmission device which is an auxiliary device for an agricultural seeder, and concretely relates to a transmission device in a (tractor) front negative pressure fan on a pneumatic precision seeder, wherein the transmission device is provided with a clutch mechanism. The fan transmission device which mainly comprises a fan support and a fan and the transmission device arranged on the fan support is characterized in that: the transmission device comprises a first belt pulley (9) connected with the driving belt pulley on a tractor output shaft and a second belt pulley (1) connected with a fan belt pulley (10); the first belt pulley (9) has a coaxial connection with the second belt pulley (1) through a bearing (2) and a shaft (3); one side of the intermediate part of the second belt pulley (1) has a ring-shaped concave; and a centrifugal type clutch is arranged in the concave to make the second belt pulley (1) be in a clutch state withina certain rotating speed. The fan transmission device of the invention has advantages of reasonable transmission structure, stable performance, simple structure, convenient operation, low cost, and the like.
Description
Technical field
The present invention relates to negative pressure fan transmission device, the servicing unit of special agricultural seeding machine is the transmission device that is provided with clutch in a kind of (tractor) front negative-pressure fan on a kind of air-aspiration type precision planter concretely.
Technical background
At present, the a large amount of time agricultural four-wheel tractors that adopt of air-aspiration type precision planter are power, and the installation of air-sucking type negative-pressure air fan and agricultural four-wheel tractor and the kind of drive overwhelming majority are front positioning type, be on the bumper of the frame of the negative-pressure air fan front portion that is installed in four-wheel tractor, the side output wheel of tractor by the V belt connection for transmission to fan blade wheel coaxial than small belt pulley, about the about 1:4 of the gearratio of the two.In the connection for transmission of this structure, the defective of existence is, when needing negative-pressure air fan work, four-wheel tractor and blower fan must start simultaneously, owing to starting the increase of blower fan load, caused the startup of four-wheel tractor relatively difficult, more difficult when especially adopting crank to start four-wheel tractor.The inventor finds in practice unexpectedly, when being designed to secondary driving system, design an arrangement of clutch, can address the above problem, so applied for that on December 13rd, 2010 key name is called " fan drive on the air-aspiration type precision planter " (publication number CN102077717A), the content of this technology mainly comprises blower rack and blower fan and the transmission device installed at blower rack, transmission device comprises first belt pulley that can connect with the drive pulley on the tractor output shaft and the second belt pulley that connects with the blower belt wheel, the first belt pulley is coaxial with the second belt pulley, between the first belt pulley and the blower belt wheel arrangement of clutch is set.But this device needs manual clutch, and advantage is at any time clutch or closure.Pass through further experiment, for the use needs of reality, the inventor has designed again a kind of automatic clutch device, so that drive system structure is simpler, cost is relatively cheap, and then finishes the present invention.
Summary of the invention
The object of the invention is to solve the problem of above-mentioned proposition, provide between the secondary transmission structure in a kind of negative-pressure air fan by centrifugal clutch is set so that drive mechanism rationally, stable performance, particularly simple in structure, more convenient to operate, the advantage such as with low cost.
Main technical schemes of the present invention is achieved in that
The present invention mainly comprises blower rack and blower fan and the transmission device installed at blower rack, transmission device comprise first belt pulley 9 that can connect with the drive pulley on the tractor output shaft and with blower belt wheel 10 the second belt pulleys 1 that connect, the first belt pulley 9 and the second belt pulley 1 are by bearing and 3 coaxial connections of axle, one side of the second belt pulley 1 mid portion is circular spill, centrifugal clutch is set, so that the second belt pulley 1 is in clutch state in certain rotating speed in spill; Described centrifugal clutch comprises: be fixedly connected with the first belt pulley 9 or the fixed head 8 of one, the circular spill of the shape of fixed head 8 and the second belt pulley 1 is complementary, fixed head 8 is boss 15 with the bearing connection place, connect centrifugal friction pieces 5 at the periphery of fixed head 8 by bearing pin 6, between the boss of centrifugal friction piece 5 and the fixed head 8 of circle, be connected with spring 13; Described centrifugal friction piece 5 surfaces attach friction plate 7, and the radial spacing of the spill inwall of the surface of friction plate 7 and the second belt pulley 1 is 1.5-8mm, and the best is 1.5-3mm; Described centrifugal friction piece 5 is rectangle or trapezoidal or convex shape for section, and is curved with the corresponding contact-making surface of the spill inner circle of the second belt pulley 1; Described centrifugal friction piece 5 is along peripheral uniform 3～5 of fixed head 8; The inner surface place of described centrifugal friction piece 5 arranges several can be in the aperture 14 of spring connection, so that be convenient to adjust the reasonable installing position of spring; Boss 15 places that described fixed head 8 connects with bearing arrange several can be in the aperture 16 of spring connection, so that be convenient to adjust the reasonable installing position of spring.
The technology of the present invention has the following advantages: owing to having adopted the side output belt pulley of former car in transmission, safety device is complete, has got rid of potential safety hazard; And adopt intermediate gearing as the middle transition transmission, and reduced the coefficient that skids of V belt, improved gearratio and transmission efficiency, saved aggressive device start initial between the energy consumption of section, when aggressive device thoroughly starts, need not any adjustment, negative-pressure air fan can work.The advantages such as drive mechanism is reasonable, stable performance, and is particularly simple in structure, more convenient to operate, with low cost.
Description of drawings
Fig. 1 is cross-sectional schematic of the present invention;
Fig. 2 be Fig. 1 the A-A cutaway view;
Fig. 3 is the I place partial enlarged drawing among Fig. 1.
Embodiment:
Label among the figure represents respectively: the 1-the second belt pulley, 2-bearing, 3-axle, 4-nut, 5-centrifugal friction piece, 6-bearing pin, 7-friction plate, 8-fixed head, the 9-the first belt pulley, 10-blower belt wheel, 11-blower fan, 12-blower rack, 13-spring, 14-aperture (on the centrifugal friction piece), 15-boss (fixed head center), 16-aperture (on the boss).
Shown in Fig. 1-3, the present invention mainly comprises blower rack and blower fan and the transmission device installed at blower rack, transmission device is first belt pulley 9 that can connect with the drive pulley (145mm) on the tractor output shaft and the second belt pulley 1 that connects with blower belt wheel 10 passes through bearing 2 and 3 coaxial connections of axle, and with nut 4 locking, one side of the second belt pulley 1 mid portion is circular spill, centrifugal clutch is set, so that the second belt pulley 1 is in clutch state in certain rotating speed in spill; Wherein, the diameter of the first belt pulley is 96mm, and the diameter of the second belt pulley 17 is that the diameter of 206mm, blower belt wheel 10 is 90mm; The second belt pulley 1 is taken turns 10 V belts with blower belt and is connected; Described centrifugal clutch comprises: be fixedly connected with the first belt pulley or the fixed head 8 of one, the circular spill of the shape of fixed head 8 and the second belt pulley 1 is complementary, fixed head 8 is boss 15 with the bearing connection place, connect centrifugal friction pieces 5 at the periphery of fixed head 8 by bearing pin 6, between the boss of centrifugal friction piece 5 and the fixed head 8 of circle, be connected with spring 13; Described centrifugal friction piece 5 surfaces attach friction plate 7, and the radial spacing of the spill inwall of the surface of friction plate 7 and the second belt pulley 1 is 2.6mm; Described centrifugal friction piece 5 is convex shape for section, and is curved with the corresponding contact-making surface of the spill inner circle of the second belt pulley 1; Described centrifugal friction piece 5 is along peripheral uniform 3 of fixed head 8; The inner surface place of described centrifugal friction piece 5 arranges several can be in the aperture 14 of spring connection, so that be convenient to adjust the reasonable installing position of spring; Boss 15 places that described fixed head 8 connects with bearing arrange several can be in the aperture 16 of spring connection, so that be convenient to adjust the reasonable installing position of spring.
Further describe as follows:
During apparatus of the present invention work, at first blower rack 12 is fixed on the tractor front end, is connected with the first belt pulley 9 by the driving wheel of belt with tractor output, the second belt pulley 1 is connected with blower belt wheel 10.Under the drive of the driving wheel that tractor is exported, the first belt pulley 9 begins to rotate, driving fixed head 8 rotates, fixed head 8 drives centrifugal friction piece 5 by bearing pin 6 and rotates, because an end of centrifugal friction piece 5 and the bearing pin 6 fixing bearing pins 6 that also can center on rotate, centrifugal friction piece 5 will be done spinning movement centered by bearing pin 6, this rotation mode is done centrifugal motion with respect to axle 3, thereby make friction plate 7 and the second belt pulley 1 inwall frictional fit on the centrifugal friction piece 5, the starting stage that the driving wheel of exporting when tractor starts, rotating speed is lower, and centrifugal friction piece 5 and the second belt pulley 1 are in clutch state under spring action; After the output driving wheel of tractor starts, immediately so that the inwall place frictional fit state of centrifugal friction piece 5 and the second belt pulley 1 driven 1 rotation of the second belt pulley, and then the drive blower fan rotates.
Although below with reference to accompanying drawing design and example according to the object of the invention have been done to elaborate; but those of ordinary skills can recognize; under the precondition that does not break away from the claim limited range; still can make various improvement and conversion to the present invention, and this improvement and conversion still should belong to protection scope of the present invention.
Claims (2)
1. negative pressure fan transmission device, the blower fan of installing at blower rack and this negative pressure fan transmission device, transmission device comprises first belt pulley (9) that can connect with the drive pulley on the tractor output shaft and the second belt pulley (1) that connects with blower belt wheel (10), the first belt pulley (9) and the second belt pulley (1) are by bearing (2) and coaxial connection of axle (3), it is characterized in that, one side of the second belt pulley (1) mid portion is circular spill, centrifugal clutch is set in spill, so that the second belt pulley (1) is in clutch state in certain rotating speed, described centrifugal clutch comprises: be fixedly connected with the first belt pulley (9) or the fixed head (8) of one, the circular spill of the shape of fixed head (8) and the second belt pulley (1) is complementary, fixed head (8) is boss (15) with the bearing connection place, connect centrifugal friction piece (5) at the periphery of fixed head (8) by bearing pin (6), between the boss of centrifugal friction piece (5) and the fixed head (8) of circle, be connected with spring (13).
2. negative pressure fan transmission device according to claim 1 is characterized in that, described centrifugal friction piece (5) surface attaches friction plate (7), and the radial spacing of the spill inwall of the surface of friction plate (7) and the second belt pulley (1) is 1.5-8mm.
3, negative pressure fan transmission device according to claim 2 is characterized in that, described centrifugal friction piece (5) surface attaches friction plate (7), and the radial spacing of the spill inwall of the surface of friction plate (7) and the second belt pulley (1) is 1.5-3mm.
4, negative pressure fan transmission device according to claim 2 is characterized in that, described centrifugal friction piece (5) is rectangle or trapezoidal or convex shape for section, and is curved with the corresponding contact-making surface of the spill inner circle of the second belt pulley (1).
5, negative pressure fan transmission device according to claim 2 is characterized in that, described centrifugal friction piece (5) is along peripheral uniform 2～6 of fixed head (8).
6, negative pressure fan transmission device according to claim 2 is characterized in that, the inner surface place of described centrifugal friction piece (5) arranges several apertures (14) that can connect with spring, so that be convenient to adjust the reasonable installing position of spring.
7, negative pressure fan transmission device according to claim 2 is characterized in that, the boss (15) that described fixed head (8) connects with bearing is located the aperture (16) that several can connect with spring is set, so that be convenient to adjust the reasonable installing position of spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103719997A CN102487645B (en) | 2011-11-22 | 2011-11-22 | Negative pressure fan transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103719997A CN102487645B (en) | 2011-11-22 | 2011-11-22 | Negative pressure fan transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102487645A CN102487645A (en) | 2012-06-13 |
| CN102487645B true CN102487645B (en) | 2013-10-16 |
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ID=46179564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103719997A Expired - Fee Related CN102487645B (en) | 2011-11-22 | 2011-11-22 | Negative pressure fan transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102487645B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111247912B (en) * | 2020-03-24 | 2024-05-31 | 华中农业大学 | Pneumatic system voltage stabilizer for direct seeding machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB601354A (en) * | 1945-11-06 | 1948-05-04 | Reavell & Company Ltd | Improvements in or relating to friction clutches |
| GB956929A (en) * | 1961-11-21 | 1964-04-29 | Int Harvester Co | Improvements in or relating to clutches |
| CN1415868A (en) * | 2002-08-18 | 2003-05-07 | 谭书渊 | mechanical centrifugal automatic clutch with high pulling torque |
| CN2580202Y (en) * | 2002-11-05 | 2003-10-15 | 唐永毅 | Low speed automatic clutch |
| CN201507581U (en) * | 2009-02-21 | 2010-06-16 | 田立中 | Centrifugal clutch |
| CN102077717A (en) * | 2010-12-13 | 2011-06-01 | 陈恒 | Fan transmission device on air-suction precise seeder |
| CN202310537U (en) * | 2011-11-24 | 2012-07-11 | 陈恒 | Front negative-pressure fan |
-
2011
- 2011-11-22 CN CN2011103719997A patent/CN102487645B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB601354A (en) * | 1945-11-06 | 1948-05-04 | Reavell & Company Ltd | Improvements in or relating to friction clutches |
| GB956929A (en) * | 1961-11-21 | 1964-04-29 | Int Harvester Co | Improvements in or relating to clutches |
| CN1415868A (en) * | 2002-08-18 | 2003-05-07 | 谭书渊 | mechanical centrifugal automatic clutch with high pulling torque |
| CN2580202Y (en) * | 2002-11-05 | 2003-10-15 | 唐永毅 | Low speed automatic clutch |
| CN201507581U (en) * | 2009-02-21 | 2010-06-16 | 田立中 | Centrifugal clutch |
| CN102077717A (en) * | 2010-12-13 | 2011-06-01 | 陈恒 | Fan transmission device on air-suction precise seeder |
| CN202310537U (en) * | 2011-11-24 | 2012-07-11 | 陈恒 | Front negative-pressure fan |
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| Publication number | Publication date |
|---|---|
| CN102487645A (en) | 2012-06-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20191122 |