CN202540196U - Direct measurement type digital display torque spanner - Google Patents
Direct measurement type digital display torque spanner Download PDFInfo
- Publication number
- CN202540196U CN202540196U CN 201220146063 CN201220146063U CN202540196U CN 202540196 U CN202540196 U CN 202540196U CN 201220146063 CN201220146063 CN 201220146063 CN 201220146063 U CN201220146063 U CN 201220146063U CN 202540196 U CN202540196 U CN 202540196U
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- Prior art keywords
- spanner
- torque sensor
- unit module
- torque
- type digital
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- Expired - Lifetime
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a direct measurement type digital display torque spanner, wherein the tail end of a spanner handle is provided with a charging plug, the front end of the spanner handle is welded with a spanner body, a cavity is partitioned between the spanner body and an instrument board, and the cavity is internally provided with a singlechip unit module and a lithium battery; a torque sensor is coaxial to a phon scale integrally, the torque sensor with the phon scale is arranged inside a groove at the front end of the spanner body and is sealed through a spanner cover plate, and the phon scale part of the torque sensor is extended out of the spanner cover plate; the lithium battery is charged through the charging plug, and supplies power for the singlechip unit module and the torque sensor with the phon scale. The direct measurement type digital display torque spanner mainly aims at the present situations that all of the existing digital display torque spanners in the existing market use indirect measurement method and have no high measurement precision and the measurement precision in use is influenced by the factors such as handheld position and the like; and the measurement precision of the digital display torque spanner is increased by an order of magnitude by adopting the principle of direct measurement and using smart structural design and the singlechip unit module with low power consumption.
Description
Technical field
The utility model technology relates to the equipment technical field of bolted, refers more particularly to automobile, train, motorcycle, the measurement control field of bolted such as machine-building.
Background technology
The Digital Electronic Torque Wrench that is widely used in the market, employing all are indirect measuring principles, promptly staff is applied to power and staff on the spanner to the torque value of the distance product of tightening target as spanner.This digital display spanner, certainty of measurement is low, and bad measurement repeatability, certainty of measurement receive wrench operated personnel's influence fully.The nominal accuracy of this digital display spanner is generally ± and 1%, ± 2%, ± 5%.In actual use, because that the wrench operated personnel hold the position of spanner is different, and each position all changes, and the aimed at precision that spanner is measured is all well below the spanner nominal accuracy.
The direct measuring type Digital Electronic Torque Wrench has just solved this problem well.
The utility model content
The purpose of the utility model is to solve in the market that Digital Electronic Torque Wrench becomes the low excessively situation of number certainty of measurement, and improve and satisfy precision optical machinery, like train, automobile, Bolt Tightening Force such as internal combustion engine control requirement.
The technical scheme of the utility model is: the direct measuring type Digital Electronic Torque Wrench comprises spanner cover plate, torque sensor, wrench body, lithium battery, pinch bar, charging plug, single machine unit module and instrument board; The end of pinch bar is installed charging plug, and front end welding wrench body is separated out a cavity between wrench body and the instrument board, single machine unit module and lithium battery are installed in the cavity; Torque sensor is marked coaxial with the side and is one, and the groove that is installed in the wrench body front end with square target torque sensor is interior through the spanner cover plate for sealing, and side's mark of torque sensor partly stretches out the spanner cover plate; Give lithium cell charging through charging plug, give single machine unit module and the power supply of the side's of being with target torque sensor by lithium battery.
Described torque sensor elastomer adopts pillar (cartridge type) or spoke structure, pastes strain gauge, forms the Hui Sitong full-bridge circuit.
Described strain gauge adopts high resistant strain gauge, resistance >=1000 Ω.
Described single machine unit module adopts MPS430 series.
The present invention's beneficial effect compared with prior art is: the direct measuring type Digital Electronic Torque Wrench adopts direct measuring method; Spanner side's mark is designed to one with torque sensor; The measuring principle science; Project organization is exquisite, and no matter operating personnel hold any position of wrench body, do not influence the certainty of measurement to target torque.And torque sensor self precision that the direct measuring type Digital Electronic Torque Wrench adopts is high, so the nominal accuracy of direct measuring type Digital Electronic Torque Wrench identifies that according to national torque wrench rules can reach: ± 0.1%, ± 0.2%, ± 0.5% certainty of measurement.
Description of drawings
Fig. 1 a is the utility model overall structure cutaway view, and Fig. 1 b is overall appearance figure.
Fig. 2 is the utility model pillar (cartridge type) torque sensor structure chart.
Fig. 3 is the utility model radial torque sensor structure chart.
Fig. 4 is the utility model direct measuring type Digital Electronic Torque Wrench electrical schematics.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is carried out detailed description.
Shown in Fig. 1 a, 1b, the direct measuring type Digital Electronic Torque Wrench comprises spanner cover plate 1, torque sensor 2, wrench body 3, charged lithium cells 4, pinch bar 5, charging plug 6, one-chip computer module 7, instrument board 8.
1 pair of torque sensor 2 of spanner cover plate shields.Wrench body 3 is carriers of whole spanner.6 pairs of charged lithium cells 4 of charging plug charge, and 4 pairs of torque sensors of charged lithium cells 2 provide power supply with single machine unit module 7.Instrument board 8 is used for fixing single machine unit module 7.Pinch bar 5 is positions that operating personnel hand.
The end of pinch bar 5 is installed charging plug 6, and front end welding wrench body 3 is separated out a cavity between wrench body 3 and the instrument board 8, single machine unit module 7 and lithium battery 4 are installed in the cavity; Torque sensor 2 is marked coaxial with the side and is one, and the groove that is installed in wrench body 3 front ends with square target torque sensor 2 is interior through the torque sensor 2 in the spanner cover plate 1 protection groove, and the square part of marking of torque sensor 2 is stretched out spanner cover plate 1; Give lithium battery 4 chargings through charging plug 6, give single machine unit module 7 and 2 power supplies of the side's of being with target torque sensor by lithium battery 4.
Torque sensor 2 is designed to one with side's mark 24 of spanner, can realize being tightened the direct torque measurement of bolt.As shown in Figures 2 and 3, on side's mark 24, have round blind hole, the inside is packaged with spring 23 and steel ball 25, and the sleeve that is connected with side's mark is had the locking effect.These two kinds of sensor elastomers 22 all adopt high-quality alloy steel, are made through processing and Technology for Heating Processing, through certain barbola work, stick on 8 high resistant strain gauges 21 on the elastomer 22, are linked to be sensor measuring circuit.These two kinds of sensor elastomer structures are different.Fig. 2 structure is comparatively simple, and is small and exquisite, and processing cost is low, easy to assembly, and shortcoming is that certainty of measurement is low slightly; Fig. 3 structure is complicated, and volume is bigger, and processing cost is higher, and advantage is that certainty of measurement is higher.After two kinds of sensor production are accomplished, mark spring 23 in the blind hole on 24 with steel ball 25 sides of putting into, steel ball 25 is pinned in punching press then.
Be pasted with 8 high resistant strain gauges on the torque sensor 2; Form the Hui Sitong full-bridge circuit; By charged lithium cells 4 power supply is provided, is converted into the signal of telecommunication to torque sensor 2 elastomeric physical quantity deformation, pass to single machine unit module 7; Carry out data, realize functions such as measurement in real time, peak value maintenance and sound and light alarm.As shown in Figure 4.Single machine unit module 7 adopts the MPS430 series of low-power consumption, makes it have long service life, more function of use.
In the above-mentioned parts, under the situation of machining conditions permit, wrench body and pinch bar can directly be processed into one.
Because adopt direct measuring principle, in the actual use of spanner, certainty of measurement does not receive operating personnel to hold pinch bar 5 position effects, identify that according to national torque wrench rules can reach: ± 0.1%, ± 0.2%, ± 0.5% certainty of measurement.
The unspecified part of the utility model belongs to general knowledge as well known to those skilled in the art.
Claims (4)
1. the direct measuring type Digital Electronic Torque Wrench is characterized in that: comprise spanner cover plate (1), torque sensor (2), wrench body (3), lithium battery (4), pinch bar (5), charging plug (6), single machine unit module (7) and instrument board (8);
The end of pinch bar (5) is installed charging plug (6), and front end welding wrench body (3) is separated out a cavity between wrench body (3) and the instrument board (8), and single machine unit module (7) and lithium battery (4) are installed in the cavity; Torque sensor (2) is marked coaxial with the side and is one, and the groove that is installed in wrench body (3) front end with square target torque sensor (2) is interior through spanner cover plate (1) sealing, and mark and partly stretches out spanner cover plate (1) side of torque sensor (2); Give lithium battery (4) charging through charging plug (6), give single machine unit module (7) and the side's of being with target torque sensor (2) power supply by lithium battery (4).
2. direct measuring type Digital Electronic Torque Wrench according to claim 1 is characterized in that: described torque sensor (2) elastomer adopts pillar or spoke structure, pastes strain gauge, forms the Hui Sitong full-bridge circuit.
3. direct measuring type Digital Electronic Torque Wrench according to claim 2 is characterized in that: described strain gauge adopts high resistant strain gauge, resistance >=1000 Ω.
4. direct measuring type Digital Electronic Torque Wrench according to claim 1 is characterized in that: described single machine unit module (7) adopts MPS430 series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220146063 CN202540196U (en) | 2012-04-06 | 2012-04-06 | Direct measurement type digital display torque spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220146063 CN202540196U (en) | 2012-04-06 | 2012-04-06 | Direct measurement type digital display torque spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202540196U true CN202540196U (en) | 2012-11-21 |
Family
ID=47160881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220146063 Expired - Lifetime CN202540196U (en) | 2012-04-06 | 2012-04-06 | Direct measurement type digital display torque spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202540196U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419165A (en) * | 2013-07-26 | 2013-12-04 | 中国计量科学研究院 | High-precision torque wrench and checkout, installation and detection method thereof |
| CN104142204A (en) * | 2013-05-10 | 2014-11-12 | 施耐宝公司 | Electronic torque tool with integrated real-time clock |
-
2012
- 2012-04-06 CN CN 201220146063 patent/CN202540196U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142204A (en) * | 2013-05-10 | 2014-11-12 | 施耐宝公司 | Electronic torque tool with integrated real-time clock |
| CN104142204B (en) * | 2013-05-10 | 2017-01-18 | 施耐宝公司 | Electronic torque tool with integrated real-time clock |
| CN103419165A (en) * | 2013-07-26 | 2013-12-04 | 中国计量科学研究院 | High-precision torque wrench and checkout, installation and detection method thereof |
| CN103419165B (en) * | 2013-07-26 | 2016-08-10 | 中国计量科学研究院 | A kind of high accuracy torque spanner and verification, installation and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |