CN108284412A - It is a kind of to determine square power operated wrench - Google Patents
It is a kind of to determine square power operated wrench Download PDFInfo
- Publication number
- CN108284412A CN108284412A CN201810141867.7A CN201810141867A CN108284412A CN 108284412 A CN108284412 A CN 108284412A CN 201810141867 A CN201810141867 A CN 201810141867A CN 108284412 A CN108284412 A CN 108284412A
- Authority
- CN
- China
- Prior art keywords
- driving wheel
- measuring arm
- torque
- power
- reaction force
- 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.)
- Withdrawn
Links
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
- 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
Abstract
Determining square power operated wrench the present invention relates to a kind of, including shell, housing forward end is provided with the torque export structure that pivot center extends along the longitudinal direction, reaction force measuring arm is fixedly installed on shell, it is provided in reaction force measuring arm for coordinating to detect the power detection structure of active force suffered by shown reaction force measuring arm with corresponding fixed component power transmission, power detection structure includes force snesor.The present invention solves the problems, such as that the output torque accuracy of detection in the prior art to torque export structure is poor.
Description
Technical field
The present invention relates to determine square power operated wrench in field of power tools.
Background technology
Power operated wrench as it is a kind of it is common apply torsion tool, use is more frequent, and one of which, which can be realized, determines torque
The power operated wrench of output also known as determines square power operated wrench.Existing to determine square power operated wrench include shell, and motor is provided on shell
That is power source, housing forward end are provided with the loop bar that transmission mechanism is connected with motor drive, and loop bar is as torque export structure
For outside output torque.In order to realize that the output for determining torque, power operated wrench have torque detection part, torque test section
Sorting surveys the output torque of torque export structure, stops power output when reaching specific torsion to realize, existing to determine square power
The torque detection part of spanner is substantially to be realized by detecting the electric current of power operated wrench, when power operated wrench applies a torque to
After to a certain degree, the rotation of loop bar can be obstructed, this can influence the electric current output of power operated wrench, to judge at torque export structure
Output torque, electric current after all with output torque only have correspondence, without conversion relation, it is this by detect electric current come
Judge that greatest problem existing for the form of output torque is exactly that measurement accuracy is poor, cannot achieve and used in high-precision field.
In addition in the prior art, in order to enrich the function of power operated wrench, power operated wrench has large torque and small toward contact
Torque output capability, but it is in order to realize the conversion between large torque, the output of small torque, is also to be become by complicated transmission
Fast mechanism realizes, not only complicated, and due in entire drive path deceleration transmission it is excessive, when large torque exports
Loop bar rotating speed polar region, the working efficiency of power operated wrench are poor.
Invention content
Square power operated wrench is determined the purpose of the present invention is to provide a kind of, to solve in the prior art to torque export structure
The problem of output torque accuracy of detection difference.
In order to solve the above technical problems, the technical solution in the present invention is as follows：
A kind of to determine square power operated wrench, including shell, housing forward end is provided with the torque output that pivot center extends along the longitudinal direction
Structure is fixedly installed on shell and is set in the reaction force measuring arm extended perpendicular to front-rear direction, reaction force measuring arm
It is equipped with for coordinating to detect the power detection structure of active force suffered by shown reaction force measuring arm with corresponding fixed component power transmission,
Power detection structure includes force snesor.
The power detection structure includes the interior plunger shaft for being equipped with hydraulic oil, and plunger shaft is in reaction force measuring arm width direction
Both ends be individually directed movement be equipped with first piston and second piston, force snesor is the pressure sensing being connected in plunger shaft
Device.
Force snesor includes the first pressure sensor and second pressure biography for being set to reaction force measuring arm opposite sides
Sensor.
At least two are provided on shell to be sequentially connected and be used for defeated to the torque respectively with the torque export structure
Go out the power source of structure output different size torque.
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 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.
Beneficial effects of the present invention are：In use, by torque export structure to bolt or nut output torque, when tightening
To a certain extent, bolt or nut cannot continue to tighten, and according to active force and reaction force, shell can be by an anti-work at this time
Firmly, the power detection structure of reaction force measuring arm is kept off onto a fixed component, and shell at this time is detected by force snesor
Suffered reaction force can accurately converse the output torque at torque export structure according to the reaction.
Further, it either rotates forward output torque and still inverts output torque, pass through the setting of plunger shaft, it is only necessary to use
One pressure sensor reduces sensor element, can not only reduce the complex degree of structure of reaction force measuring arm, also
The cost of product can be reduced.
Further, in the present invention, by the way that the not unique power source of number is arranged, each power source is to torque export structure
Different size of torque is exported, when in face of different torque output environments, need to be using different power source power outputs only
Can, compared with prior art in, complicated transmission mechanism is only needed there are one power source come for realizing different torques outputs, knot
Structure is simple.
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 cooperation schematic diagram of 1 middle casing and reaction force measuring arm of the embodiment of the present invention；
Fig. 2 is the cooperation schematic diagram of 1 middle rack of the embodiment of the present invention, rear driving wheel；
Fig. 3 is the cooperation schematic diagram of forward pass driving wheel, rear driving wheel in inventive embodiments 1；
Fig. 4 is the cooperation schematic diagram of 2 middle casing and reaction force measuring arm of the embodiment of the present invention；
Fig. 5 is the cooperation schematic diagram of forward pass driving wheel, rear driving wheel in inventive embodiments 3；
Fig. 6 is the cooperation schematic diagram of forward pass driving wheel, rear driving wheel in the embodiment of the present invention 4；
Fig. 7 is the cooperation schematic diagram of 5 middle casing and reaction force measuring arm of the embodiment of the present invention.
Specific implementation mode
The embodiment 1 of square power operated wrench is determined as shown in Fig. 1 ~ 3：Power operated wrench in the present invention is electric wrench, including shell
Body, housing forward end are provided with the torque export structure exported for torque.Power operated wrench includes transmission mechanism, and transmission mechanism includes
The front and back forward pass driving wheel 3 being coaxially set and rear driving wheel 7, torque export structure is by the interior square hole 4 that is set on forward pass driving wheel 3
It constitutes.It is sequentially connected afterwards by single-direction transmission structure 6 between driving wheel 7 and forward pass driving wheel, the single-direction transmission knot in the present embodiment
Structure 6 is end ratchet drive mechanism, and end ratchet drive mechanism belongs to the prior art comprising the spine being set on rear driving wheel
Pawl and the ratchet being set on driving front rear end face, when rear driving wheel rotates, pawl can drive ratchet, driving front rotation
It is dynamic, and when the rotation of contemporary transmissions wheel, power will not transmit driving wheel backward.Battery is further fixed on shell, battery is detachable
Battery.
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, battery are powered to power source, 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.
It is installed on shell 8 and is measured along the reaction force extended perpendicular to the pivot center direction of torque export structure
Arm 9, reaction force measuring arm 9 can also be used as counter-force arm use, reaction force measuring arm be equipped with plunger shaft, the one of plunger shaft
End guiding movement is equipped with first piston 10, and the other end guiding movement of plunger shaft is equipped with second piston 12, in plunger shaft
It is connected with pressure sensor 11, pressure sensor, plunger shaft and each piston are constituted for coordinating with corresponding fixed component power transmission
With the power detection structure of active force suffered by reaction force measuring arm shown in detection.When torque export structure arrives bolt output torque
To a certain degree, when bolt cannot be rotated further, according to active force, reaction force, shell can by a reaction force, at this time its
In a piston top on a certain fixing piece, pressure sensor experiences reaction force herein, and passes through plunger shaft and torque
The distance between export structure converses the torque of torque export structure at this time.
When in use, motor exports power operated 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 power operated wrench
Rate.
In other embodiments of the invention：Battery can also be non-removable；Single-direction transmission structure can also be single
To bearing；Battery can not also be set on shell, and power operated wrench can directly be electrically connected with city, setting in the shell of power operated wrench
There is transformer；Torque output head can also be the outer square head structure being set on forward pass driving wheel；Reaction force measuring arm also may be used
Not to be straight-arm, an arched arm or other shapes for example；Motor can also be replaced by air motor, at this time in use,
It is passed through pressed gas to the air motor of power operated wrench, pressure oil is passed through into hydraulic cylinder and is completed using operation.
The embodiment 2 for determining square power operated wrench is as shown in Figure 4：Embodiment 2 as different from Example 1, power detection structure
Force snesor includes the first pressure sensor 15 and second pressure sensor 16 for being set to reaction force measuring arm opposite sides.
The embodiment 3 for determining square power operated wrench is as shown in Figure 5：As different from Example 1, the first power source is embodiment 3
One motor 5.
The embodiment 4 for determining square power operated wrench is as shown in Figure 6：As different from Example 1, the first power source 5 is embodiment 4
One 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,
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 5 for determining square power operated wrench is as shown in Figure 7：As different from Example 1, reaction force measures embodiment 5
Arm includes the first measuring arm 9-1 being set up in parallel and the second measuring arm 9-2, the first measuring arm, the second measuring arm be can it is opposite and
The elastic arm of opposite flexible deformation, force snesor are setting and the pull pressure sensor between the first measuring arm and the second measuring arm
17.When in use, working as one of elastic arm fixed part block, the reaction force applied to bolt or nut can be by another
An outer elastic arm applies pressure to pull pressure sensor, the reaction force of the position is thus read, due to tension pressure sensing
The limitation of the device self-deformation limit, the first measuring arm, the second measuring arm generate the deformation very little that can be generated, 0.3mm with
Under, the elastic acting force generated by the deformation can be ignored, and pull pressure sensor can accurately read the reaction of the position
Power.
Claims (8)
1. a kind of determining square power operated wrench, including shell, it is defeated that housing forward end is provided with the torque that pivot center extends along the longitudinal direction
Go out structure, it is characterised in that：Reaction force measuring arm is fixedly installed on shell, be provided in reaction force measuring arm for
Corresponding fixed component power transmission cooperation is to detect the power detection structure of active force suffered by shown reaction force measuring arm, power detection structure
Including force snesor.
2. according to claim 1 determine square power operated wrench, it is characterised in that：The power detection structure includes interior equipped with hydraulic pressure
The plunger shaft of oil, plunger shaft are individually directed at the both ends of reaction force measuring arm width direction and mobile are equipped with first piston and the
Two pistons, force snesor are the pressure sensor being connected in plunger shaft.
3. according to claim 1 determine square power operated wrench, it is characterised in that：Force snesor includes being set to reaction force survey
Measure the first pressure sensor and second pressure sensor of arm opposite sides.
4. determining square power operated wrench according to claim 1 ~ 3 any one, it is characterised in that：At least two are provided on shell
It is a to be sequentially connected with the torque export structure and be used to export the dynamic of different size torque to the torque export structure respectively
Power source.
5. according to claim 4 determine square power operated wrench, it is characterised in that：Before being provided with front and back arrangement on the shell
Driving wheel and rear driving wheel, the torque export structure is set on the forward pass driving wheel, between rear driving wheel and forward pass driving wheel
It is connected by single-direction transmission structure driven, one of power source is connected with forward pass driving wheel transmission, another power source
It is connected with the rear driving wheel transmission.
6. according to claim 5 determine square power operated wrench, it is characterised in that：Forward pass driving wheel is set with rear driving wheel coaxial line
It sets, the single-direction transmission structure is ratchet driving structure or unilateral bearing drive mechanism.
7. according to claim 5 determine square power operated wrench, it is characterised in that：It is driven the power being connected with the forward pass driving wheel
Source is motor, and the power source being connected with the rear driving wheel transmission is hydraulic cylinder.
8. according to square power operated wrench is determined shown in claim 1, it is characterised in that：Reaction force measuring arm includes being set up in parallel
First measuring arm and the second measuring arm, the first measuring arm, the second measuring arm be can opposite and opposite flexible deformation elastic arm, power
Sensor is setting and the pull pressure sensor between the first measuring arm and the second measuring arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141867.7A CN108284412A (en) | 2018-02-11 | 2018-02-11 | It is a kind of to determine square power operated wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141867.7A CN108284412A (en) | 2018-02-11 | 2018-02-11 | It is a kind of to determine square power operated wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108284412A true CN108284412A (en) | 2018-07-17 |
Family
ID=62833101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810141867.7A Withdrawn CN108284412A (en) | 2018-02-11 | 2018-02-11 | It is a kind of to determine square power operated wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108284412A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1314552A (en) * | 1969-10-09 | 1973-04-26 | Bosch Gmbh Robert | Device for measuring the torque of electrical machines |
| US4006629A (en) * | 1975-07-17 | 1977-02-08 | Gse, Inc. | Torque measuring apparatus |
| SU1458196A1 (en) * | 1987-07-02 | 1989-02-15 | Предприятие П/Я А-7332 | Torque wrench |
| JP2004232344A (en) * | 2003-01-30 | 2004-08-19 | Nippon Sharyo Seizo Kaisha Ltd | Torque measuring device |
| CN201079942Y (en) * | 2007-08-30 | 2008-07-02 | 李志民 | Hydraulic type number torque spanner |
| CN101678538A (en) * | 2007-06-13 | 2010-03-24 | 京都机械工具株式会社 | Torque wrench |
| CN104647263A (en) * | 2013-11-21 | 2015-05-27 | 辽宁工程技术大学 | Mine multifunctional intelligent pretensioner |
| CN204525310U (en) * | 2015-04-16 | 2015-08-05 | 北京劳动保障职业学院 | A kind of intelligent definite value torque wrench |
| CN106826638A (en) * | 2015-12-03 | 2017-06-13 | 哈尔滨市三和佳美科技发展有限公司 | Digital display torque spaner |
| CN206357133U (en) * | 2016-12-22 | 2017-07-28 | 天津欣旭达科技有限公司 | A kind of hand-held standard torque spanner |
-
2018
- 2018-02-11 CN CN201810141867.7A patent/CN108284412A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1314552A (en) * | 1969-10-09 | 1973-04-26 | Bosch Gmbh Robert | Device for measuring the torque of electrical machines |
| US4006629A (en) * | 1975-07-17 | 1977-02-08 | Gse, Inc. | Torque measuring apparatus |
| SU1458196A1 (en) * | 1987-07-02 | 1989-02-15 | Предприятие П/Я А-7332 | Torque wrench |
| JP2004232344A (en) * | 2003-01-30 | 2004-08-19 | Nippon Sharyo Seizo Kaisha Ltd | Torque measuring device |
| CN101678538A (en) * | 2007-06-13 | 2010-03-24 | 京都机械工具株式会社 | Torque wrench |
| CN201079942Y (en) * | 2007-08-30 | 2008-07-02 | 李志民 | Hydraulic type number torque spanner |
| CN104647263A (en) * | 2013-11-21 | 2015-05-27 | 辽宁工程技术大学 | Mine multifunctional intelligent pretensioner |
| CN204525310U (en) * | 2015-04-16 | 2015-08-05 | 北京劳动保障职业学院 | A kind of intelligent definite value torque wrench |
| CN106826638A (en) * | 2015-12-03 | 2017-06-13 | 哈尔滨市三和佳美科技发展有限公司 | Digital display torque spaner |
| CN206357133U (en) * | 2016-12-22 | 2017-07-28 | 天津欣旭达科技有限公司 | A kind of hand-held standard torque spanner |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180717 |