CN201659330U - Two-stage speed reduction electric circular saw - Google Patents
Two-stage speed reduction electric circular saw Download PDFInfo
- Publication number
- CN201659330U CN201659330U CN2010201048626U CN201020104862U CN201659330U CN 201659330 U CN201659330 U CN 201659330U CN 2010201048626 U CN2010201048626 U CN 2010201048626U CN 201020104862 U CN201020104862 U CN 201020104862U CN 201659330 U CN201659330 U CN 201659330U
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- Prior art keywords
- circular saw
- electric circular
- driving wheel
- speed reduction
- driven pulley
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Abstract
A two-stage speed reduction electric circular saw comprises a motor, a speed reduction mechanism, an adjusting mechanism, circular saw blades, a protection cover and a work head. The speed reduction mechanism comprises a primary driving wheel connected onto a motor shaft; a primary driven wheel larger than the primary driving wheel is arranged on the primary driving wheel in a meshed manner; a coaxial middle gear is arranged on the primary driven wheel; a secondary driven wheel larger than the middle gear is arranged on the middle gear in a meshed manner; and the secondary driven wheel is connected with the work head. The circular saw adopts two-stage small gears to drive a large gear in transmission to achieve the purpose of speed reduction, thereby increasing torsion. A 185 electric circular saw or 7-inch electric circular saw has no-load rotation speed reaching 3200r/min-4200r/min, and has torsion reaching 2.7Nm-3.8Nm, while a 235 electric circular saw or 9-inch electric circular saw has no-load rotation speed reaching 3400r/min-2900r/min, and torsion reaching 5.0Nm-6.5Nm, and the motor is not easy to burn off.
Description
Technical field
The utility model relates to a kind of electric circular saw.
Background technology
The rotating speed of present 185 electric circular saws or 7 inches electric circular saws is all at 4600r/min～5600r/min (under the condition of 220V, as follows), because of the restriction of motor maximum speed and the restriction of machine construction, output torque is less, generally all at 1.7Nm～2.5Nm, and 235 electric circular saws or 9 cun electric circular saw rotating speeds are all at 4200r/min～3400r/min, also because of the restriction of motor maximum speed and the restriction of machine construction, output torque is generally all at 2.7Nm～4.7Nm, overload is frequent in the actual use, burns out motor easily.
Summary of the invention
The utility model will solve existing electric circular saw and have the output torque problem of smaller, and a kind of double reduction electric circular saw that has improved moment of torsion is provided.
The technical solution of the utility model:
The double reduction electric circular saw, comprise motor, reducing gear, governor motion, saw blade, protective cover, working head, it is characterized in that: described reducing gear comprises the one-level driving wheel, described one-level driving wheel is connected on the motor shaft, be engaged with on the described one-level driving wheel than its big one-level driven pulley, described one-level driven pulley is provided with coaxial idler gear, and described idler gear is engaged with than its big secondary driven pulley, and described secondary driven pulley is connected with working head.
Described one-level driving wheel can directly be processed on motor shaft and obtain, also can independent geared sleeve on motor shaft.Described idler gear and one-level driven pulley can be integrative-structures, also can be that independently two gears are installed together, and both angular speed is identical.
Technical conceive of the present utility model: during work, motor drives one-level driving wheel rotates, and then drives the rotation of one-level driven pulley, and idler gear and then rotates simultaneously, drives the rotation of secondary driven pulley, drives working head work again.Adopted the two-stage pinion to drive the gear wheel transmission, reached the purpose of slowing down, thereby increased moment of torsion.185 electric circular saws or 7 inches electric circular saws have been used no-load speed 3200r/min～4200r/min behind the double reduction, and moment of torsion reaches 2.7Nm～3.8Nm; And 235 electric circular saws or 9 cun electric circular saw no-load speed 3400r/min～2900r/min, moment of torsion reaches 5.0Nm～6.5Nm, not the easy burn-out motor.
The beneficial effects of the utility model: improved output torque, the motor long service life.
Description of drawings
Fig. 1 is the structural representation of reducing gear of the present utility model.
Fig. 2 be reducing gear of the present utility model along Figure 1A-A to cutaway view.
The specific embodiment
With reference to Fig. 1, Fig. 2, the double reduction electric circular saw, comprise motor, reducing gear, governor motion, saw blade, protective cover, working head, described reducing gear comprises one-level driving wheel 1, described one-level driving wheel 1 is connected on the motor shaft, is engaged with on the described one-level driving wheel 1 than its big one-level driven pulley 2, and described one-level driven pulley 2 is provided with coaxial idler gear 3, described idler gear 3 is engaged with than its big secondary driven pulley 4, and described secondary driven pulley 4 is connected with working head 5.
Described one-level driving wheel 1 can directly be processed on motor shaft and obtain, also can independent geared sleeve on motor shaft.Described idler gear 3 and one-level driven pulley 2 can be integrative-structures, also can be that independently two gears are installed together, and both angular speed is identical.
During work, motor drives one-level driving wheel 1 rotates, and then drives 2 rotations of one-level driven pulley, and idler gear 3 and then rotates simultaneously, drives 4 rotations of secondary driven pulley, drives working head 5 work again.Adopted the two-stage pinion to drive the gear wheel transmission, reached the purpose of slowing down, thereby increased moment of torsion.185 electric circular saws or 7 inches electric circular saws have been used no-load speed 3200r/min～4200r/min behind the double reduction, moment of torsion reaches 2.7Nm～3.8Nm, and 235 electric circular saws or 9 cun electric circular saw no-load speed 3400r/min～2900r/min, moment of torsion reaches 5.0Nm～6.5Nm, not the easy burn-out motor.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (1)
1. double reduction electric circular saw, comprise motor, reducing gear, governor motion, saw blade, protective cover, working head, it is characterized in that: described reducing gear comprises the one-level driving wheel, described one-level driving wheel is connected on the motor shaft, be engaged with on the described one-level driving wheel than its big one-level driven pulley, described one-level driven pulley is provided with coaxial idler gear, and described idler gear is engaged with than its big secondary driven pulley, and described secondary driven pulley is connected with working head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201048626U CN201659330U (en) | 2010-01-25 | 2010-01-25 | Two-stage speed reduction electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201048626U CN201659330U (en) | 2010-01-25 | 2010-01-25 | Two-stage speed reduction electric circular saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201659330U true CN201659330U (en) | 2010-12-01 |
Family
ID=43229740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201048626U Expired - Fee Related CN201659330U (en) | 2010-01-25 | 2010-01-25 | Two-stage speed reduction electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201659330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170701A (en) * | 2018-02-19 | 2019-08-27 | 罗伯特·博世有限公司 | Bench saw with stage power transmission components |
-
2010
- 2010-01-25 CN CN2010201048626U patent/CN201659330U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170701A (en) * | 2018-02-19 | 2019-08-27 | 罗伯特·博世有限公司 | Bench saw with stage power transmission components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |