CN103692398A - High-moment electric wrench - Google Patents
High-moment electric wrench Download PDFInfo
- Publication number
- CN103692398A CN103692398A CN201310674942.3A CN201310674942A CN103692398A CN 103692398 A CN103692398 A CN 103692398A CN 201310674942 A CN201310674942 A CN 201310674942A CN 103692398 A CN103692398 A CN 103692398A
- Authority
- CN
- China
- Prior art keywords
- gear
- generation part
- motor
- ripple generation
- wave generation
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a high-moment electric wrench, which comprises a sleeve, a flexible gear, a circular spline jacket, a connecting rod, a motor and a handle; a screw mating hole and a wave generation component are respectively arranged on the front end and the rear end of the sleeve; the outer periphery of the wave generation component is noncircular; the flexible gear is arranged at the outer side of the wave generation component, and a bearing ball is arranged between the flexible gear and the wave generation component; the wave generation component and the flexible gear are both arranged in the circular spline jacket; gear teeth are arranged on the outer ring of the flexible gear and the inner ring of the circular spline jacket respectively, the flexible gear and the circular spline jacket are partially engaged; one end of the connecting rod is arranged on the rear end of the circular spline jacket, and the other end of the connecting rod is connected with a rotating shaft of the motor; the motor is arranged on the handle. According to the high-moment electric wrench, the wave generation component, the flexible gear and the circular spline jacket form a harmonic gear structure, a harmonic gear has higher transmission ratio, the moment deficiency can be made up through the rotating speed accumulation of the motor, and tighter screws or nuts can be unscrewed through lower moment.
Description
Technical field
The present invention relates to a kind of spanner, particularly a kind of high torque electric wrench, belongs to spanner technical field.
Background technology
In the assembling and maintenance process of product, nut and screw usually there will be the situation that rust is dead and be difficult to turn on; To adopt the method for Lengthened wrench actuation arm to dismantle habitually in the past, but there is application of force difficulty in this method, and dynamics is inadequate, dangerous high drawback, and can cause thread damage, workpiece destroys, people's personal safety is on the hazard, has not only extended the working time, also increased job costs.
Summary of the invention
Technical problem for above-mentioned existence, the object of the invention is: proposed a kind of high torque electric wrench.
Technical solution of the present invention is achieved in that a kind of high torque electric wrench, comprises sleeve, flexbile gear, firm wheel case, connecting rod, motor and handle; The front end of described sleeve is provided with screw fit hole, and the rear end of sleeve is provided with ripple generation part; Being shaped as of the excircle of described ripple generation part is non-circular; Described flexbile gear is arranged on the outside of ripple generation part, between flexbile gear and ripple generation part, is provided with bearing ball; Described ripple generation part and flexbile gear are all arranged in firm wheel case; On the inner ring of the outer ring of described flexbile gear and just wheel case, be provided with the gear teeth, flexbile gear partly meshes with firm wheel case; One end of described connecting rod is arranged on the rear end of firm wheel case, and the other end is connected with the rotating shaft of motor; Described motor is arranged on handle.
Preferably, the excircle of described ripple generation part is shaped as ellipse.
Preferably, described ripple generation part is hollow-core construction.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
High torque electric wrench of the present invention, by ripple generation part, flexbile gear and firm wheel case, form a kind of harmonic gear structure, because harmonic gear has larger gearratio, and principle that can coaxial line transmission, by adding up of motor speed, made up the deficiency in moment, and the gear range of harmonic gear is very large, the size of gearratio depends on flexbile gear and the just division of the number of teeth of wheel case, can realize by less moment tighter screw or nut are turned on.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the structural representation of a kind of high torque electric wrench of the present invention;
Accompanying drawing 2 is that the A-A of a kind of high torque electric wrench of the present invention is to cutaway view;
Wherein: 1, sleeve; 2, flexbile gear; 3, firm wheel case; 4, connecting rod; 5, motor; 6, handle; 7, screw fit hole; 8, ripple generation part.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described.
As shown in Figure 1-2, a kind of high torque electric wrench of the present invention, comprises sleeve 1, flexbile gear 2, firm wheel case 3, connecting rod 4, motor 5 and handle 6; The front end of described sleeve 1 is provided with screw fit hole 7, and the rear end of sleeve 1 is provided with ripple generation part 8; Described ripple generation part 8 is hollow-core construction, the excircle of ripple generation part 8 be shaped as ellipse; Described flexbile gear 2 is arranged on the outside of ripple generation part 8, between flexbile gear 2 and ripple generation part 8, is provided with bearing ball; Described ripple generation part 8 and flexbile gear 2 are all arranged in firm wheel case 3; On the inner ring of the outer ring of described flexbile gear 2 and just wheel case 3, be provided with the gear teeth, flexbile gear 2 and just wheel case 3 part engagements; One end of described connecting rod 4 is arranged on the rear end of firm wheel case 3, and the other end is connected with the rotating shaft of motor 5; Described motor 5 is arranged on handle 6; Described handle 6 is arranged to the structure that can be gripped respectively by two hands.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
High torque electric wrench of the present invention, by ripple generation part, flexbile gear and firm wheel case, form a kind of harmonic gear structure, because harmonic gear has larger gearratio, and principle that can coaxial line transmission, by adding up of motor speed, made up the deficiency in moment, and the gear range of harmonic gear is very large, the size of gearratio depends on flexbile gear and the just division of the number of teeth of wheel case, can realize by less moment tighter screw or nut are turned on.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. a high torque electric wrench, is characterized in that: comprise sleeve (1), flexbile gear (2), firm wheel case (3), connecting rod (4), motor (5) and handle (6); The front end of described sleeve (1) is provided with screw fit hole (7), and the rear end of sleeve (1) is provided with ripple generation part (8); Being shaped as of the excircle of described ripple generation part (8) is non-circular; Described flexbile gear (2) is arranged on the outside of ripple generation part (8), between flexbile gear (2) and ripple generation part (8), is provided with bearing ball; Described ripple generation part (8) and flexbile gear (2) are all arranged in firm wheel case (3); On the inner ring of the outer ring of described flexbile gear (2) and just wheel case (3), be provided with the gear teeth, flexbile gear (2) and just wheel case (3) part engagement; One end of described connecting rod (4) is arranged on the rear end of firm wheel case (3), and the other end is connected with the rotating shaft of motor (5); Described motor (5) is arranged on handle (6).
2. high torque electric wrench according to claim 1, is characterized in that: the excircle of described ripple generation part (8) be shaped as ellipse.
3. high torque electric wrench according to claim 1, is characterized in that: described ripple generation part (8) is hollow-core construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674942.3A CN103692398A (en) | 2013-12-12 | 2013-12-12 | High-moment electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674942.3A CN103692398A (en) | 2013-12-12 | 2013-12-12 | High-moment electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103692398A true CN103692398A (en) | 2014-04-02 |
Family
ID=50354146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310674942.3A Pending CN103692398A (en) | 2013-12-12 | 2013-12-12 | High-moment electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103692398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786182A (en) * | 2015-02-03 | 2015-07-22 | 苏州市职业大学 | Electric screwing tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541313A (en) * | 1983-11-15 | 1985-09-17 | Norbar Torque Tools Limited | Adjustable torque wrench |
| RO107108B1 (en) * | 1990-01-15 | 1993-09-30 | Inst Politehnic Traian Vuia | Harmonic multiplier key (wrench) for twisting moment |
| JPH06193663A (en) * | 1992-12-21 | 1994-07-15 | Daihen Corp | Power transmission device |
| JP2006102826A (en) * | 2004-09-30 | 2006-04-20 | Nidec Shibaura Corp | Power tool |
| CN102235463A (en) * | 2010-04-30 | 2011-11-09 | 长江大学 | Petroleum drilling trajectory-controlled harmonic gear transmission device |
| CN202862092U (en) * | 2012-09-29 | 2013-04-10 | 江苏博固机电有限公司 | Improved multifunctional electric wrench |
| CN202862088U (en) * | 2012-09-29 | 2013-04-10 | 江苏博固机电有限公司 | Improved electric wrench |
| CN203738681U (en) * | 2013-12-12 | 2014-07-30 | 苏州市职业大学 | High-moment electric wrench |
-
2013
- 2013-12-12 CN CN201310674942.3A patent/CN103692398A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541313A (en) * | 1983-11-15 | 1985-09-17 | Norbar Torque Tools Limited | Adjustable torque wrench |
| RO107108B1 (en) * | 1990-01-15 | 1993-09-30 | Inst Politehnic Traian Vuia | Harmonic multiplier key (wrench) for twisting moment |
| JPH06193663A (en) * | 1992-12-21 | 1994-07-15 | Daihen Corp | Power transmission device |
| JP2006102826A (en) * | 2004-09-30 | 2006-04-20 | Nidec Shibaura Corp | Power tool |
| CN102235463A (en) * | 2010-04-30 | 2011-11-09 | 长江大学 | Petroleum drilling trajectory-controlled harmonic gear transmission device |
| CN202862092U (en) * | 2012-09-29 | 2013-04-10 | 江苏博固机电有限公司 | Improved multifunctional electric wrench |
| CN202862088U (en) * | 2012-09-29 | 2013-04-10 | 江苏博固机电有限公司 | Improved electric wrench |
| CN203738681U (en) * | 2013-12-12 | 2014-07-30 | 苏州市职业大学 | High-moment electric wrench |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786182A (en) * | 2015-02-03 | 2015-07-22 | 苏州市职业大学 | Electric screwing tool |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140402 |