CN108274423A - A kind of adjustable electric wrench of output torque - Google Patents
A kind of adjustable electric wrench of output torque Download PDFInfo
- Publication number
- CN108274423A CN108274423A CN201810142500.7A CN201810142500A CN108274423A CN 108274423 A CN108274423 A CN 108274423A CN 201810142500 A CN201810142500 A CN 201810142500A CN 108274423 A CN108274423 A CN 108274423A
- Authority
- CN
- China
- Prior art keywords
- torque
- driving wheel
- power source
- electric wrench
- forward pass
- 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.)
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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
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention relates to a kind of adjustable electric wrenches of output torque, including shell, housing forward end is provided with the torque export structure exported for torque, housing rear end is equipped with battery, and at least two power sources for being sequentially connected and be used to export to the torque export structure respectively different size torque with the torque export structure are provided on shell.The present invention solves the problems, such as the prior art causes transmission mechanism complicated to realize that output torque is adjustable.
Description
Technical field
The present invention relates to the adjustable electric wrenches of output torque in field of power tools.
Background technology
It is one of most common mode in mechanical connection to be bolted, and has in industries such as metallurgy, mine, high ferros and answers extensively
With.And when applying torque to bolt or nut, often required torque is different in varying environment, and this requires electronic
The output torque of spanner is adjustable.
A kind of existing electric wrench that can realize output torque adjusting is as disclosed in Chinese patent CN206140379U
" a kind of high-speed rail construction torque adjustable electric wrench ", the electric wrench include shell, and it is dynamic to be arranged on shell there are one motor
Power source, loop bar are connected by transmission mechanism with motor drive, and loop bar, that is, torque export structure is used for outside output torque, driver
Structure includes the connection pinion gear being coaxially connected with loop bar and the shaft being connected with motor coaxle, in shaft setting there are three diameters not
Consistent driving gear, transmission mechanism further include two two shrinking connecting-rods being arranged in juxtaposition with shaft, and shrinking connecting-rod is in bar
It can be moved axially under driving, the first driven pinion, the first driven gear wheel and connection canine tooth are provided on shrinking connecting-rod
Wheel connects gear wheel and connect pinion gear engaged transmission.In use, by two groups of bars move back and forth, allow second driven
Pinion gear, the second driven gear wheel, the first driven pinion and the first driven gear wheel can respectively with four groups of different radiis
Driving gear engages, and to provide different rotating speeds to loop bar, by changing rotating speed, provides different torques.It is existing this
Although electric wrench also achieves the adjustable of output torque, but due to needing through the mobile engagement between different gears come real
It is existing, lead to the internal structure complex of entire electric wrench, in addition when carrying out large torque output, due to entire drive path
Upper deceleration transmission is excessive, loop bar rotating speed polar region when large torque exports, and the working efficiency of electric wrench is poor.
Invention content
The purpose of the present invention is to provide a kind of adjustable electric wrenches of output torque, are that realization is defeated to solve the prior art
Go out that torque is adjustable and the problem that causes transmission mechanism complicated.
In order to solve the above technical problems, the technical solution in the present invention is as follows：
A kind of adjustable electric wrench of output torque, including shell, housing forward end are provided with the torque output exported for torque
Structure, housing rear end are equipped with battery, and at least two are provided on shell and is sequentially connected and is used for the torque export structure
The power source of different size torque is exported to the torque export structure respectively.
It is provided with the front and back forward pass driving wheel arranged on the shell and rear driving wheel, the torque export structure are set to institute
State on forward pass driving wheel, connected by single-direction transmission structure driven between rear driving wheel and forward pass driving wheel, one of power source with
The forward pass driving wheel transmission is connected, another power source is connected with the rear driving wheel transmission.
Forward pass driving wheel is coaxially set with rear driving wheel, and the single-direction transmission structure is ratchet driving structure or unilateral bearing
Drive mechanism.
The single-direction transmission structure is ratchet driving structure, and ratchet driving structure is end ratchet drive mechanism.
The power source being connected with forward pass driving wheel transmission is motor, and the power source being connected with the rear driving wheel transmission is
Hydraulic cylinder.
The power source being connected with forward pass driving wheel transmission and the power source being connected with the rear driving wheel transmission are to be
Motor.
Beneficial effects of the present invention are：In the present invention, by the way that the not unique power source of number is arranged, each power source is to torsion
Square export structure exports different size of torque, when in face of different torque output environments, only need to use different power sources
Power output, compared with prior art in, only need complicated transmission mechanism to realize different torques there are one power source
It is simple in structure for output.
Further, hydraulic cylinder exports for realizing large torque, and motor exports for realizing small torque, and motor is before
When driving wheel drives the output of power output head torque, due to the presence of single-direction transmission structure, hydraulic cylinder will not be impacted,
Need using hydraulic cylinder output torque when, hydraulic cylinder by rear driving wheel, forward pass driving wheel to power output head output torque, unidirectionally
The large torque output of fast rotating speed may be implemented without slowing down in drive mechanism, improves working efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the cooperation schematic diagram of forward pass driving wheel, rear driving wheel in Fig. 1；
Fig. 3 is the cooperation schematic diagram of embodiment 1 middle casing and reaction force measuring arm；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 5 is the structural schematic diagram of the embodiment of the present invention 3；
Fig. 6 is the cooperation schematic diagram of the embodiment of the present invention 4 middle casing and reaction force measuring arm.
Specific implementation mode
A kind of embodiment 1 of the adjustable electric wrench of output torque is as shown in Fig. 1 ~ 3：Including shell, housing forward end setting
It is useful for the torque export structure of torque output.Electric wrench includes transmission mechanism, and transmission mechanism includes front and back is coaxially set
Forward pass driving wheel 3 and rear driving wheel 7, torque export structure be made of the interior square hole 4 being set on forward pass driving wheel 3.Driving wheel 7 afterwards
It is sequentially connected by single-direction transmission structure 6 between forward pass driving wheel, the single-direction transmission structure 6 in the present embodiment passes for end ratchet
Dynamic structure, end ratchet drive mechanism belong to the prior art comprising the pawl that is set on rear driving wheel and are set to forward pass
Ratchet on dynamic rear end face, when rear driving wheel rotates, pawl can drive ratchet, forward pass wheel rotation, and contemporary transmissions wheel
When rotation, power will not transmit driving wheel backward.Housing rear end is removable to be equipped with battery, and battery can be removed and be charged.
The to be connected is additionally provided with rear driving wheel the first power source 5 for being connected of transmission and is driven with forward pass driving wheel on shell
Two power sources 2, power source is battery powered, and in the present embodiment, the first power source is hydraulic cylinder, and the second power source is motor, preceding
Driving wheel periphery has forward pass moving teeth, is provided on the output shaft of motor and is passed with the driving front tooth engagement of forward pass driving wheel periphery
Dynamic motor output gear；Driving wheel periphery has rear driving cog afterwards, is connected on the piston rod of hydraulic cylinder after realizing and being described
The driving rack 1 of driving cog engaged transmission.
Electric wrench, which has, in the present invention determines torque output function, and torque measurement is realized by following means,
It is installed on shell 8 along the reaction force measuring arm 9 extended perpendicular to the pivot center direction of torque export structure, instead
Force measurement arm 9 can also be used as counter-force arm use, and reaction force measuring arm is equipped with plunger shaft, and one end of plunger shaft is oriented to
Movement is equipped with first piston 10, and the other end guiding movement of plunger shaft is equipped with second piston 12, is connected in plunger shaft
Pressure sensor 11.When torque export structure to bolt output torque to a certain extent, when bolt cannot be rotated further, according to work
Firmly, reaction force, shell can be by a reaction forces, and on a certain fixing piece, pressure passes one of piston top at this time
Sensor experiences reaction force herein, and converses torque at this time by the distance between plunger shaft and torque export structure
The torque of export structure.For existing wrest fixing spanner, existing wrest fixing spanner is typically all motionless by being twisted in bolt
When, size of current in electric wrench judges the output torque of electric wrench, and the side of output torque is judged by size of current
The result of formula, judgement is very inaccurate, and is directly measured by reaction force in the present invention, ensure that the standard that output torque judges
True property.
When in use, motor exports electric wrench for small torque, and hydraulic cylinder is exported for large torque, is exported in small torque
When, the premenstrual driving wheel of power of motor passes to torque export structure, and due to the use of single-direction transmission structure, hydraulic cylinder will not be by
To influence, small torque high speed output can be carried out；When needing large torque to export, the power of hydraulic cylinder driving wheel, forward pass after
Driving wheel passes to torque export structure, and large torque speedy carding process may be implemented in motor idle running, ensures the work effect of electric wrench
Rate.
In other embodiments of the invention：Single-direction transmission structure can also be unilateral bearing；Torque output head also may be used
To be disposed on the outer square head structure on forward pass driving wheel.
The embodiment 2 of electric wrench is as shown in Figure 4：As different from Example 1, the first power source is one to embodiment 2
Motor 5.
The embodiment 3 of electric wrench is as shown in Figure 5：As different from Example 1, the first power source 5 is one to embodiment 3
Motor, the first power source, the second power source are sequentially connected with rear driving wheel, and the first power source is exported for large torque, and second
Power source is exported for small torque, when the first power source works, the idle running of the second power source, and when the second power source works, first
Power source dallies.
The embodiment 4 of electric wrench is as shown in Figure 6：Embodiment 4 as different from Example 1, reaction force measuring arm packet
The first measuring arm 9-1 being set up in parallel and the second measuring arm 9-2 are included, the first measuring arm, the second measuring arm are can be opposite and opposite
The elastic arm of flexible deformation, force snesor are setting and the pull pressure sensor 17 between the first measuring arm and the second measuring arm.
When in use, working as one of elastic arm fixed part block, the reaction force applied to bolt or nut can be by addition
One elastic arm applies pressure to pull pressure sensor, the reaction force of the position is thus read, due to by pull pressure sensor
The limitation of the self-deformation limit, the first measuring arm, the second measuring arm generate the deformation very little that can be generated, in 0.3mm hereinafter,
The elastic acting force generated by the deformation can be ignored, and pull pressure sensor can accurately read the reaction force of the position.
Claims (6)
1. a kind of adjustable electric wrench of output torque, including shell, it is defeated that housing forward end is provided with the torque exported for torque
Go out structure, housing rear end is equipped with battery, it is characterised in that：At least two are provided on shell to pass with the torque export structure
It is dynamic to connect and for respectively to the power source of torque export structure output different size torque.
2. electric wrench according to claim 1, it is characterised in that：The front and back driving front arranged is provided on the shell
Wheel and rear driving wheel, the torque export structure are set on the forward pass driving wheel, pass through between rear driving wheel and forward pass driving wheel
Single-direction transmission structure driven connects, and one of power source is connected with forward pass driving wheel transmission, another power source and institute
Rear driving wheel transmission is stated to be connected.
3. electric wrench according to claim 2, it is characterised in that：Forward pass driving wheel is coaxially set with rear driving wheel, institute
It is ratchet driving structure or unilateral bearing drive mechanism to state single-direction transmission structure.
4. electric wrench according to claim 3, it is characterised in that：The single-direction transmission structure is ratchet driving structure,
Ratchet driving structure is end ratchet drive mechanism.
5. electric wrench according to claim 2, it is characterised in that：Being driven the power source being connected with the forward pass driving wheel is
Motor, the power source being connected with the rear driving wheel transmission is hydraulic cylinder.
6. electric wrench according to claim 2, it is characterised in that：With the forward pass driving wheel power source that is connected of transmission and
It is motor to be driven the power source being connected to be with the rear driving wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142500.7A CN108274423A (en) | 2018-02-11 | 2018-02-11 | A kind of adjustable electric wrench of output torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142500.7A CN108274423A (en) | 2018-02-11 | 2018-02-11 | A kind of adjustable electric wrench of output torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108274423A true CN108274423A (en) | 2018-07-13 |
Family
ID=62808384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810142500.7A Withdrawn CN108274423A (en) | 2018-02-11 | 2018-02-11 | A kind of adjustable electric wrench of output torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108274423A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115512A (en) * | 2000-10-03 | 2002-04-19 | Yutani:Kk | Valve clearance setting device |
| JP2004025322A (en) * | 2002-06-21 | 2004-01-29 | Makita Corp | Electric screwdriver |
| JP2004283948A (en) * | 2003-03-20 | 2004-10-14 | Nitto Seiko Co Ltd | Thread fastening device |
| JP2009178823A (en) * | 2008-01-31 | 2009-08-13 | Nitto Seiko Co Ltd | Screw member fastening machine |
| JP2011125957A (en) * | 2009-12-17 | 2011-06-30 | Nitto Seiko Co Ltd | Screw part fastening/loosing device |
| CN102695588A (en) * | 2009-12-17 | 2012-09-26 | 日东精工株式会社 | Threaded fastener tightening and loosening device |
| CN104823258A (en) * | 2013-03-08 | 2015-08-05 | 三菱电机株式会社 | Operation device for switches |
-
2018
- 2018-02-11 CN CN201810142500.7A patent/CN108274423A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115512A (en) * | 2000-10-03 | 2002-04-19 | Yutani:Kk | Valve clearance setting device |
| JP2004025322A (en) * | 2002-06-21 | 2004-01-29 | Makita Corp | Electric screwdriver |
| JP2004283948A (en) * | 2003-03-20 | 2004-10-14 | Nitto Seiko Co Ltd | Thread fastening device |
| JP2009178823A (en) * | 2008-01-31 | 2009-08-13 | Nitto Seiko Co Ltd | Screw member fastening machine |
| JP2011125957A (en) * | 2009-12-17 | 2011-06-30 | Nitto Seiko Co Ltd | Screw part fastening/loosing device |
| CN102695588A (en) * | 2009-12-17 | 2012-09-26 | 日东精工株式会社 | Threaded fastener tightening and loosening device |
| CN104823258A (en) * | 2013-03-08 | 2015-08-05 | 三菱电机株式会社 | Operation device for switches |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180713 |
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| WW01 | Invention patent application withdrawn after publication |