CN202388481U - Electric torque multiplier - Google Patents
Electric torque multiplier Download PDFInfo
- Publication number
- CN202388481U CN202388481U CN2011205658885U CN201120565888U CN202388481U CN 202388481 U CN202388481 U CN 202388481U CN 2011205658885 U CN2011205658885 U CN 2011205658885U CN 201120565888 U CN201120565888 U CN 201120565888U CN 202388481 U CN202388481 U CN 202388481U
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- China
- Prior art keywords
- sleeve
- planetary gear
- planetary gears
- torque
- motor
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Abstract
The utility model relates to the field of machines, and in particular relates to an electric torque multiplier. The electric torque multiplier comprises a shell, wherein the motor is arranged at one end of the shell and is connected with a high-speed planetary gear mechanism through a motor output shaft; the high-speed planetary gear mechanism is connected with a low-speed planetary gear mechanism through a tie bar; inner gears are arranged at the inner sides of the shells of the high-speed planetary gear mechanism and the low-speed planetary gear mechanism; the low-speed planetary gear mechanism is connected with a sleeve; the sleeve is arranged at the outer side of the shell; and a sensor is arranged at one end of the shell close to the sleeve. The electric torque multiplier disclosed by the utility model has the advantages of large torque, small volume, low construction cost and wide application range; the torque is increased through transmission of a gear by utilizing the radius ratio of the inner gears and outer gears in a planetary gear system so that the length of a mechanism is reduced; larger force couple can be obtained by controlling the radius ratio of the gears so that the requirements on the large torque are met; and the motor is taken as power so that the outputted torque is larger, the output of the torque is fast and highly efficient, labor can be saved, usage is convenient and control is easy.
Description
(1) technical field
The utility model relates to mechanical field, particularly a kind of electric torque multiplier.
(2) background technology
The modal place of the application of moment of torsion is exactly being screwed into of nut and back-outs, and the simplest application tool is exactly a spanner.Spanner is shaped on clamp holder portion usually and applies the external force shank and apply external force in the one or both ends of shank, so just can twist opening or trepanning that bolt or nut are held bolt or nut.Through increasing the arm of force moment is increased, utilize the object that smaller power promptly can be rotated needs rotation.But spanner structure is simple, and the moment of increase is also limited, can not satisfy the requirement of some big moments.Because the needs of practical applications, along with development of science and technology, traditional spanner can not adapt to requirement in a lot of occasions, and the Method and kit for that various moments of torsion increase arises at the historic moment.
The fastening of various bolts secondary (particularly major diameter) in industries such as Automobile Service, electric power, oil, machinery, traffic shipbuildings required great effort with dismantling generally very much.The fastening large-scale nut of Auto repair shop basically all use wind big gun pneumatic impact spanner, the spanner that rare use is electronic; Though the pneumatic impact spanner of wind big gun structure need not manpower, volume is bigger, and price is higher, generally 1500-2000 and more than, and unsafe factor is arranged, be difficult to its control during the work of wind big gun pneumatic impact spanner in addition.
(3) summary of the invention
The utility model is in order to remedy the defective of prior art, provide that a kind of volume is little, cost is low, moment greatly, electric torque multiplier rapidly and efficiently.
The utility model is realized through following technical scheme:
A kind of electric torque multiplier comprises housing, it is characterized in that: an end is installed motor in the housing; Motor connects level planetary gears at a high speed through motor output shaft; The level planetary gears connects the slow speed turbine stage planetary gears through tie-rod at a high speed, and the outer housing inboard of level planetary gears and slow speed turbine stage planetary gears is provided with internal gear, slow speed turbine stage planetary gears branch sleeve at a high speed; Sleeve is positioned at hull outside, and housing is near an end sensor installation of sleeve.
This electric torque multiplier, level planetary gears and slow speed turbine stage planetary gears comprise sun gear and three planetary gears respectively at a high speed, and planetary gear is engaged between sun gear and the internal gear, and planetary gear connects planetary gear carrier.Sleeve comprises the M8-M12 sleeve, and the sleeve-port place of sleeve is a diameter type variable structure.
The beneficial effect of the utility model is: this electric torque multiplier, moment is big, volume is little, cost is low, the scope of application is extensive.Adopt gear drive, utilize the radius ratio of interior external gear in the epicyclic train to increase moment, thus reducing mechanism length; Can obtain very big couple through the control gear radius ratio, adapt to the requirement of some big moments; As power, output torque is bigger with motor, rapidly and efficiently, can save manpower, and easy to use, is easy to control.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is the structural representation of the utility model electric torque multiplier.
Accompanying drawing 2 is the structural representation of the utility model planetary gears.
Accompanying drawing 3 is the multiple torque principle schematic of the utility model.
Among the figure, 1 motor, 2 high speed level planetary gears, 3 slow speed turbine stage planetary gears, 4 housings; 5 bearings, 6 sleeves, 7 high-speed planetary gear supports, 8 sensors, 9 low-speed planets supports; 10 tie-rods, 11 motor output shafts, 12 sun gears, 13 planetary gears, 14 internal gears.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the utility model.
Among Fig. 1, this electric torque multiplier comprises housing 4; An end is installed motor 1 in the housing 4, and motor 1 connects level planetary gears 2 at a high speed through motor output shaft 11, and level planetary gears 2 connects slow speed turbine stage planetary gears 3 through tie-rod 10 at a high speed; Level planetary gears 2 is provided with internal gear 14 with slow speed turbine stage planetary gears 3 outer housing 4 inboards at a high speed, slow speed turbine stage planetary gears 3 branch sleeves 6, and sleeve 6 is positioned at housing 4 outsides; Housing 4 is near an end sensor installation 8 of sleeve 6, and sensor 8 can measure and show that sleeve 6 produces the size of moment of torsion, and operating personnel control through 8 data presented of sensor; Guarantee that moment of torsion can not surpass maximum screw-down torque; Thereby make moment of torsion be lower than the ultimate tension of bolt, prevent, guarantee the normal use of bolt bolt failure.Sleeve 6 comprises the M8-M12 sleeve, and the sleeve-port place of sleeve 6 is a diameter type variable structure.
Among Fig. 2, level planetary gears 2 comprises sun gear 12 and three planetary gears 13 respectively with slow speed turbine stage planetary gears 3 at a high speed, and planetary gear 13 is engaged between sun gear 12 and the internal gear 14, and planetary gear 13 connects planetary gear carrier.
This electric torque multiplier, when motor 1 rotated, motor output shaft 11 drove sun gear 12 rotations of level planetary gears 2 at a high speed; Sun gear 12 drives planetary gear 13 and rotates, and planetary gear 13 drives high-speed planetary gear support 7 and rotates, and high-speed planetary gear support 7 rotates through the sun gear 12 that tie-rod 10 drives slow speed turbine stage planetary gears 3; Sun gear 12 in like manner drives planetary gear 13 and rotates; Planetary gear 13 drives low-speed planets support 9 and rotates, and low-speed planets support 9 drives sleeve 6 through tie-rod and rotates, and still there is bearing 5 end of housing 4 in the tie-rod periphery; Moment of torsion is delivered on the sleeve 6 by tie-rod, realizes the degree of tightness to bolt.When having confirmed the power output P of motor, by formula:
Can know that the value that reduces ω can make output torque increase.Can know that by Fig. 3 planetary gears has the function of deceleration: when inside and outside gear rotates, because linear velocity is identical, so have:
Just can the moment of torsion of motor output be amplified amplification ratio
through planetary gears.We have the two-stage gear by the multiplier of design, so amplification ratio is
.
When using multiplier, can stablize in order to make device, on the housing 4 at sleeve-port place, need to increase a firm handle.Because the electric torque multiplier is a manually operated tools, must consider to alleviate the spanner volume and weight when therefore designing.For this reason, select for use volume is less, rotating speed is easy to control stepper motor as power set.Deceleration device then adopts compact conformation, planetary gears that gearratio is big.For increasing work efficiency, saving the time of tightening;, bolt realizes the third gear working speed in screwing process: in the phase I that bolt is screwed through microcomputer-controlled step motor; The turn of nut on bolt only need overcome the frictional resistance moment of screw pair; Required screw-down torque is less, can adopt fast and tighten, and the sleeve-port rotating speed is 50r/min; In the second stage that bolt is screwed, nut with fitted by connector after increased applying moment, therefore need to increase the screw-down torque of spanner, can adopt low speed to tighten this moment, the sleeve-port rotating speed is 25r/min.When institute's nutting needed very big moment, the sleeve-port rotating speed was 5r/min.
The main design parameters of this electric torque multiplier is following:
1. main technical requirements
Tighten needs for satisfying general bolt, electric wrench is proposed following main technical requirements: 1. maximum screw-down torque Tmax=470Nm; 2. allow overload torque T=480Nm; 3. tighten rotation speed n=50r/min fast; 4. fit and tighten rotation speed n=25r/min.5. acrotorque rotation speed n=5r/min.
2. the parameter designing of planetary gears
Require and the calculating of gear-driven intensity according to the multiplier transmission, can confirm planetary gears parameter (seeing table 1).
Table 1 planetary gear mechanisms for two stages parameter
3. stepper motor parameter designing
Permanent-magnet stepping motor is made up of four phase windings.During the energising of A phase winding, rotor magnetic steel will turn to the determined magnetic direction of this phase winding; A cuts off the power supply mutually, when the B phase winding is switched on, just produce a new magnetic direction, and at this moment, rotor is positioned on the new magnetic direction with regard to rotating an angle, and the order that is energized phase has determined the rotor motion direction.The permanent-magnet stepping motor consumed power is less, and step angle is bigger.This motor volume, capacity are less, relatively are suitable for manually operated tools, so be elected to be the motor of our this multiplier.Rated power 250W, maximum (top) speed 1300r/min, rated voltage 380V, rated current 0
.85A, power factor 0
.68.
Claims (3)
1. electric torque multiplier; Comprise housing (4); It is characterized in that: an end is installed motor (1) in the housing (4), and motor (1) connects level planetary gears (2) at a high speed through motor output shaft (11), and level planetary gears (2) connects slow speed turbine stage planetary gears (3) through tie-rod (10) at a high speed; Level planetary gears (2) is provided with internal gear (14) with outer housing (4) inboard of slow speed turbine stage planetary gears (3) at a high speed; Slow speed turbine stage planetary gears (3) branch sleeve (6), sleeve (6) are positioned at housing (4) outside, and housing (4) is near an end sensor installation (8) of sleeve (6).
2. electric torque multiplier according to claim 1; It is characterized in that: level planetary gears (2) comprises sun gear (12) and three planetary gears (13) respectively with slow speed turbine stage planetary gears (3) at a high speed; Planetary gear (13) is engaged between sun gear (12) and the internal gear (14), and planetary gear (13) connects planetary gear carrier.
3. electric torque multiplier according to claim 1 is characterized in that: sleeve (6) comprises the M8-M12 sleeve, and the sleeve-port place of sleeve (6) is a diameter type variable structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205658885U CN202388481U (en) | 2011-12-30 | 2011-12-30 | Electric torque multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205658885U CN202388481U (en) | 2011-12-30 | 2011-12-30 | Electric torque multiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202388481U true CN202388481U (en) | 2012-08-22 |
Family
ID=46663432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205658885U Expired - Fee Related CN202388481U (en) | 2011-12-30 | 2011-12-30 | Electric torque multiplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202388481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514542A (en) * | 2016-10-25 | 2017-03-22 | 河南理工大学 | Digital-display torque multiplier having magnification factor adjusting function |
-
2011
- 2011-12-30 CN CN2011205658885U patent/CN202388481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514542A (en) * | 2016-10-25 | 2017-03-22 | 河南理工大学 | Digital-display torque multiplier having magnification factor adjusting function |
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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: 20120822 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |