CN202974526U - Static torque detection device - Google Patents

Static torque detection device Download PDF

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Publication number
CN202974526U
CN202974526U CN 201220626289 CN201220626289U CN202974526U CN 202974526 U CN202974526 U CN 202974526U CN 201220626289 CN201220626289 CN 201220626289 CN 201220626289 U CN201220626289 U CN 201220626289U CN 202974526 U CN202974526 U CN 202974526U
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CN
China
Prior art keywords
arm
force
arc surface
static torque
balance
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Expired - Fee Related
Application number
CN 201220626289
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Chinese (zh)
Inventor
任宇
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Qijiang Gear Transmission Co Ltd
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Qijiang Gear Transmission Co Ltd
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Publication date
Application filed by Qijiang Gear Transmission Co Ltd filed Critical Qijiang Gear Transmission Co Ltd
Priority to CN 201220626289 priority Critical patent/CN202974526U/en
Application granted granted Critical
Publication of CN202974526U publication Critical patent/CN202974526U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a static torque detection device. The static torque detection device includes a force arm and a balance arm which are connected with each other to form an entire entity. The balance arm is a screw and is in threaded connection with a leveling nut. The force arm and the balance arm are arranged on the same axis center line; the connecting position of the force arm and the balance arm is provided with a fulcrum; the center of the fulcrum is provided with a fixing hole; the force arm is sector-shaped; the outer end surface of the force arm is an arc surface; the center of the arc surface is the axis centre of the fixing hole; and one end portion of the force arm, which is adjacent to the arc surface, hangs a tray used for placing weights. The static torque detection device of the utility model has the advantages of simple structure, convenient operation, low cost and high precision.

Description

The static torque pick-up unit
Technical field
The utility model relates to a kind of pick-up unit, particularly a kind of static torque pick-up unit.
Background technology
at present, in detecting, static torque usually adopt the combination of lever and counterweight to detect, wherein lever is common cylindric lever, one end of lever is the force, the other end is attached most importance to, balance pivot is between force and emphasis, the balance pivot place be provided with for the circumferential fixing fixed orifice of measured workpiece, balance pivot is to being the arm of force between the force, the end of the arm of force is connected with scale pan by wire rope, balance pivot is to being balance arm between emphasis, balance arm is screw rod, the leveling nut has been threaded on balance arm, during detection, first that lever is circumferentially fixing by an end of the fixed orifice on fulcrum and measured workpiece, the other end of measured workpiece is fixed on worktable, leveling nut on the adjustment arm makes lever balance again, after lever balance, counterweight is placed on scale pan, lever is reversed around fixed orifice with the measured workpiece distortion, thereby the power that effective arm of force and counterweight by lever apply calculates the torque value that is applied on measured workpiece, to realize the static torque detection to measured workpiece.But adopt aforesaid way that the weak point that measured workpiece carries out the static torque detection is, because lever is common cylindric lever, and the end face of lever arm of force is the plane, after this just makes lever reverse certain angle, the corresponding shortening of effective arm of force meeting of lever, and it is constant all the time to ensure the effect arm, thereby causes adding after counterweight also respective change of the actual torque value of measuring, and measuring accuracy can not be guaranteed.Although also have by after using laser range finder to measure effective arm of force of lever, calculate with the counterweight value that applies again, draw the actual torque value, realizing high-acruracy survey, but its shortcoming is all must measure with laser range finder effective arm of force of lever when applying counterweight at every turn, complicated operation not only, inefficiency, and increased use cost, also can't detect some measurement (detecting as the part anti-twisting property) simultaneously.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of static torque pick-up unit is provided, and it has simple in structure, and is easy to operate, and cost is low, the advantage that precision is high.
The technical solution of the utility model is: a kind of static torque pick-up unit, comprise the arm of force and the balance arm that connect as one, described balance arm is screw rod, the leveling nut has been threaded on balance arm, the described arm of force and balance arm are positioned on same axial line, the junction of the arm of force and balance arm is provided with fulcrum, the center of described fulcrum is provided with fixed orifice, the described arm of force is fan-shaped, the outer face of this arm of force is arc surface, the center of circle of described arc surface is the axle center of fixed orifice, and the described arm of force is hung with for the pallet of placing counterweight near an end end of arc surface.
The arc length of described arc surface is 4~6 times of fixed orifice aperture.
The length of the described arm of force is at least 1.5 times of arc surface arc length.
Described fixed orifice is rectangular opening or splined hole.
The middle part of the described arm of force is provided with the hollow out mouth.
Described pallet is suspended on the arm of force by connecting line, and the described arm of force is equipped be used to the screw that is fixedly connected with line near an end end of arc surface.
Described connecting line is banded connecting line.
Described connecting line is wire rope.
Described arc surface is provided with the groove to the wire rope location.
Adopt technique scheme, the utility model static torque pick-up unit had the following advantages:
Because the described arm of force and balance arm are positioned on same axial line, the junction of the arm of force and balance arm is provided with fulcrum, the center of described fulcrum is provided with fixed orifice, the arm of force that connects as one and balance arm can be fixedly connected on measured workpiece by the fixed orifice at fulcrum place, and utilize lever principle to carry out static torque to measured workpiece and detect.And because the described arm of force is fan-shaped, the outer face of this arm of force is arc surface, the center of circle of described arc surface is the axle center of fixed orifice, arbitrary stress point on the arc surface of the arm of force is equated all the time to the air line distance between the fixed orifice center, thereby after making this device reverse certain angle, its effective arm of force can not change all the time, has guaranteed measuring accuracy.Compare with existing metering system, not only measuring accuracy is higher, and need not to use the utility appliance such as laser range finder to carry out the effective force arm measure, operate simpler, saved use cost, and the precision that can be used in torque sensor and part anti-twisting property detects, and has solved the problem that existing metering system can't detect the anti-twisting property of part.Because the end end of the described arm of force near arc surface is hung with for the pallet of placing counterweight, during measurement, only need counterweight is loaded on pallet, can calculate the torque value that is applied on measured workpiece by power and the effective arm of force that counterweight applies, detect with the static torque of completing measured workpiece.
Be 4~6 times of fixed orifice aperture due to the arc length of described arc surface, and the length of the described arm of force is at least 1.5 times of the arc surface arc length, the length of the arm of force can be arranged according to the arc length of arc surface, and the arc length of arc surface arranges according to the aperture of fixed orifice, the aperture of fixed orifice arranges according to the external diameter of measured workpiece, to guarantee that measurement range can satisfy testing requirement, further improved measuring accuracy.
Because described fixed orifice is rectangular opening or splined hole, this static torque pick-up unit can circumferentially be fixed by fixed orifice and measured workpiece, to prevent circumferential rotation.
Because the middle part of the described arm of force is provided with the hollow out mouth, both alleviated the weight of the arm of force, saved again and become to produce cost.
Therefore, the utility model static torque pick-up unit has simple in structure, easy to operate, and cost is low, the advantage that precision is high.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is working state schematic representation of the present utility model;
Fig. 3 is a kind of embodiment of the present utility model.
In accompanying drawing, 1 is the arm of force, and 1a is the hollow out mouth, and 2 is balance arm, and 3 are the leveling nut, and 4 is fulcrum, and 5 is fixed orifice, and 6 is arc surface, and 6a is groove, and 7 is pallet, and 8 is counterweight, and 9 is connecting line, and 10 is screw.
Embodiment
Referring to Fig. 1 to Fig. 2, a kind of embodiment of static torque pick-up unit, this device comprises the arm of force 1 and the balance arm 2 that connects as one, in the present embodiment, the length of the arm of force 1 is greater than the length of balance arm 2, described balance arm 2 is screw rod, the leveling nut 3 that has been threaded on balance arm 2 by regulating leveling nut 3, makes the arm of force 1 and balance arm 2 can keep balance.The described arm of force 1 and balance arm 2 are positioned on same axial line, the arm of force 1 is provided with fulcrum 4 with the junction of balance arm 2, make the arm of force 1 and the balance arm 2 that connect as one jointly form the mechanism that is similar to lever, the center of described fulcrum 4 is provided with fixed orifice 5, be used for being connected with measured workpiece, in the present embodiment, fixed orifice 5 is rectangular opening or splined hole, this static torque pick-up unit can circumferentially be fixed by fixed orifice 5 and measured workpiece, to prevent circumferential rotation.The described arm of force 1 is fan-shaped, and the middle part of the arm of force 1 is provided with hollow out mouth 1a, can alleviate arm of force weight, can save production cost again.The outer face of the described arm of force 1 is arc surface 6, and the center of circle of described arc surface 6 is the axle center of fixed orifice 5, and arbitrary stress point on the arc surface of the arm of force is equated all the time to the air line distance between the fixed orifice center, and namely the effective arm of force of the arm of force after stressed is constant all the time.The arc length of described arc surface 6 is 4~6 times of fixed orifice 5 apertures, the length of the described arm of force 1 is at least 1.5 times of arc surface 6 arc length, the length of the arm of force can be arranged according to the arc length of arc surface, and the arc length of arc surface arranges according to the aperture of fixed orifice, the aperture of fixed orifice arranges according to the external diameter of measured workpiece, to guarantee that measurement range can satisfy testing requirement, improved measuring accuracy.In the present embodiment, the arc length of arc surface 6 is about 6 times of fixed orifice 5 apertures, and the length of the arm of force 1 is about 1.5 times of arc surface 6 arc length.The described arm of force is hung with for the pallet 7 of placing counterweight 8 near an end end of arc surface, described pallet 7 is suspended on the arm of force 1 by connecting line 9, the described arm of force is equipped be used to the screw 10 that is fixedly connected with line 9 near an end end of arc surface, described connecting line 9 can be banded connecting line, also can be wire rope, in the present embodiment, connecting line 9 is banded connecting line, rocks arbitrarily on arc surface 6 to prevent connecting line 9, affects measurement result.
Referring to Fig. 3, the utility model is not limited only to above-described embodiment, when connecting line 9 is wire rope, for prevent that wire rope from rocking arbitrarily on arc surface 6, described arc surface 6 is provided with the groove 6a to the wire rope location, makes wire rope can be arranged in groove 6a, to reach the effect of location.
during use, first that this static torque pick-up unit is circumferentially fixing by an end of fixed orifice and measured workpiece, the other end of measured workpiece is fixed on worktable, make balance arm and the arm of force keep balance by the leveling nut on the adjustment arm again, at this moment, the moment of torsion that is applied on balance arm and the arm of force equates, the moment of torsion that measured workpiece is subject to is zero, after ready to balance arm and the arm of force are adjusted balance, counterweight is loaded on pallet, the power that counterweight applies passes to measured workpiece by the arm of force, the stressed rear generation elastic deformation of measured workpiece, the arm of force reverses around fixed orifice with the measured workpiece distortion, due to the stress point of the arm of force all the time on arc surface, after the arm of force reverses certain angle, the power that counterweight is applied on the arm of force guarantees vertically downward all the time, effective arm of force after the arm of force is stressed is constant all the time, so only need by the length of effective arm of force and the power value of counterweight, can calculate accurately the torque value that is applied on measured workpiece, thereby the static torque of completing measured workpiece detects.

Claims (9)

1. static torque pick-up unit, comprise the arm of force (1) and the balance arm (2) that connect as one, described balance arm (2) is screw rod, leveling nut (3) has been threaded on balance arm (2), it is characterized in that: the described arm of force (1) and balance arm (2) are positioned on same axial line, the arm of force (1) is provided with fulcrum (4) with the junction of balance arm (2), the center of described fulcrum (4) is provided with fixed orifice (5), the described arm of force (1) is fan-shaped, the outer face of this arm of force (1) is arc surface (6), the center of circle of described arc surface (6) is the axle center of fixed orifice (5), the described arm of force is hung with for the pallet (7) of placing counterweight (8) near an end end of arc surface.
2. static torque pick-up unit according to claim 1 is characterized in that: the arc length of described arc surface (6) is 4~6 times of fixed orifice (5) aperture.
3. static torque pick-up unit according to claim 1, it is characterized in that: the length of the described arm of force (1) is at least 1.5 times of arc surface (6) arc length.
4. static torque pick-up unit according to claim 1, it is characterized in that: described fixed orifice (5) is rectangular opening or splined hole.
5. static torque pick-up unit according to claim 1, it is characterized in that: the middle part of the described arm of force (1) is provided with hollow out mouth (1a).
6. static torque pick-up unit according to claim 1, it is characterized in that: described pallet (7) is suspended on the arm of force (1) by connecting line (9), and the described arm of force is equipped be used to the screw that is fixedly connected with line (9) (10) near an end end of arc surface.
7. static torque pick-up unit according to claim 3, it is characterized in that: described connecting line (9) is banded connecting line.
8. static torque pick-up unit according to claim 3, it is characterized in that: described connecting line (9) is wire rope.
9. according to claim 1 or 8 described static torque pick-up units is characterized in that: described arc surface (6) is provided with the groove (6a) to the wire rope location.
CN 201220626289 2012-11-23 2012-11-23 Static torque detection device Expired - Fee Related CN202974526U (en)

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Application Number Priority Date Filing Date Title
CN 201220626289 CN202974526U (en) 2012-11-23 2012-11-23 Static torque detection device

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Application Number Priority Date Filing Date Title
CN 201220626289 CN202974526U (en) 2012-11-23 2012-11-23 Static torque detection device

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105953975A (en) * 2016-07-19 2016-09-21 农业部南京农业机械化研究所 Weight and lever type removable static calibration device and calibration method
CN106053046A (en) * 2016-07-19 2016-10-26 农业部南京农业机械化研究所 Soil bin test table
CN106197843A (en) * 2016-08-31 2016-12-07 北京航天动力研究所 A kind of on-site torsion calibration device
CN106248274A (en) * 2016-10-11 2016-12-21 沈阳航天新光集团有限公司 A kind of special moment of torsion detection tool device
CN108414237A (en) * 2018-03-09 2018-08-17 吉测(苏州)测试系统有限公司 Output motor double link torque verifies device
CN112533732A (en) * 2018-06-21 2021-03-19 恩里克·法西奥 Fastening tool transient torque measurement accessory

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105953975A (en) * 2016-07-19 2016-09-21 农业部南京农业机械化研究所 Weight and lever type removable static calibration device and calibration method
CN106053046A (en) * 2016-07-19 2016-10-26 农业部南京农业机械化研究所 Soil bin test table
CN106197843A (en) * 2016-08-31 2016-12-07 北京航天动力研究所 A kind of on-site torsion calibration device
CN106248274A (en) * 2016-10-11 2016-12-21 沈阳航天新光集团有限公司 A kind of special moment of torsion detection tool device
CN108414237A (en) * 2018-03-09 2018-08-17 吉测(苏州)测试系统有限公司 Output motor double link torque verifies device
CN108414237B (en) * 2018-03-09 2023-11-10 吉测(苏州)测试系统有限公司 Output motor double-connecting-rod torque verification device
CN112533732A (en) * 2018-06-21 2021-03-19 恩里克·法西奥 Fastening tool transient torque measurement accessory

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130605

Termination date: 20131123