CN206114179U - Measure device that high strength bolt connects vice torque coefficient - Google Patents
Measure device that high strength bolt connects vice torque coefficient Download PDFInfo
- Publication number
- CN206114179U CN206114179U CN201621159036.5U CN201621159036U CN206114179U CN 206114179 U CN206114179 U CN 206114179U CN 201621159036 U CN201621159036 U CN 201621159036U CN 206114179 U CN206114179 U CN 206114179U
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- Prior art keywords
- strength bolt
- rectangular frame
- auxiliary connection
- nut
- measured
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Abstract
The utility model belongs to the technical field of machinery measuring instrument equipment, a measure device that high strength bolt connects vice torque coefficient is related to. Including the fixing device who is used for being connected vice fixed connection with the high strength bolt that awaits measuring, the torque wrench that vice complex nut department is used for applying the moment of torsion for the nut is being connected with the high strength bolt that awaits measuring to the setting, torque wrench passes through the sleeve and is connected with the nut, be equipped with torque sensor between torque wrench and the sleeve, torque sensor is connected with the moment of torsion display, nut and the high strength bolt that awaits measuring are connected to be equipped with on the screw rod between the vice head and measure the high strength bolt that awaits measuring and connect the one -way foil gage that vice the axial of the screw rod meets an emergency, one -way foil gage is connected with electric resistance strain gauge. The utility model discloses the equipment is simple, and operating speed is fast to measuring result is accurate, reliable, and the volume of being particularly useful for small batch high strength bolt connects the detection of vice torque coefficient.
Description
【Technical field】
The utility model belongs to mechanical gage equipment technical field, is related to a kind of measurement high-strength bolt connection accessory torque
The device of coefficient.
【Background technology】
High-strength big six-angle spiral auxiliary connection is made up of same batch of bolt for manufacturing, a nut and two packing rings
Structure securing member is connected, as connection steel structure member important way, because it has easy construction, stress performance is good,
Endurance, connection reliability it is high the advantages of, be widely used at the aspect such as large-scale steel structure engineering and road and bridge.
The torque coefficient of wherein high strength bolt connection pairs is the important indicator for evaluating component switching performance, to guaranteeing engineering safety quality
Play key effect.
At present, the calculating to torque coefficient k mainly passes through《Code for acceptance of construction quality of steel structures》(GB50205-
2001) the formula k=T/ (DP) of regulation is calculated.
In formula：K-torque coefficient；
The moment of torsion of T-applying, Nm；
The nominal diameter of D-bolt, mm；
Pretension suffered by P-bolt, KN
Because bolt produces strain under certain moment of torsion, the pretension P suffered by bolt can be by the line that fits with strain
Sexual intercourse is calculated by formula below；P=EA ε1
In formula：The elastic modelling quantity of E-bolt material；
The area of section of A-screw rod, A=π D2The nominal diameter of/4, D bolt, mm.
ε1The strain that-bolt is produced under moment of torsion
The torque T of applying can be determined by torque wrench, in the case of the nominal diameter of bolt is fixed, can be obtained
Go out torque coefficient k.
Measure high-strength bolt auxiliary connection torque coefficient k when, prior art apply twist during, operator is usually through torsion
Square spanner is manually applied moment of torsion, but because torque wrench has certain error, about at ± 3% or so, manual work
It is difficult to the precision of precise control.
【Utility model content】
To solve the above problems, the purpose of this utility model is to provide a kind of measurement high-strength bolt auxiliary connection torque coefficient
Device and method, when being measured to torque coefficient k using the device, speed is fast, and high precision is safe and reliable.
The purpose of this utility model is achieved through the following technical solutions：
A kind of device of measurement high-strength bolt auxiliary connection torque coefficient, including for fixing with high-strength bolt auxiliary connection to be measured
The fixing device of connection, is arranged at the nut coordinated with high-strength bolt auxiliary connection to be measured for applying the moment of torsion of moment of torsion for nut
Spanner, torque wrench is connected by sleeve with nut, is provided with torque sensor between torque wrench and sleeve, torque sensor with
Moment of torsion display connects, and the screw rod between nut and high-strength bolt auxiliary connection head to be measured is provided with measurement high-strength bolt to be measured and connects
The unidirectional foil gauge of sub-screw axial strain is connect, unidirectional foil gauge is connected with resistance strain gauge.
The unidirectional foil gauge arranges multiple, and the circumferencial direction for connecting sub-screw in high-strength bolt to be measured is symmetrical arranged.
The unidirectional foil gauge arranges two.
Offer on the screw rod of the high-strength bolt auxiliary connection to be measured for accommodating the wire being connected with unidirectional foil gauge
Groove, the upper end of groove extends to the lower end of unidirectional foil gauge, and the lower end of groove extends downwardly and connects through high-strength bolt to be measured
Connect the head of pair.
Fixing device includes inner rectangular frame and outer rectangular frame, and inner rectangular frame and outer rectangular frame are wrapped
The top board in top, the base plate that is below and the baffle plate in both sides are included, the two ends of baffle plate are solid with top board and base plate respectively
Fixed connection, inner rectangular frame is arranged on the inside of outer rectangular frame and corresponding sides are parallel, and outer rectangular frame is fixed and it
Base plate is connected with the base plate of inner rectangular frame, and the screw rod of high-strength bolt auxiliary connection to be measured runs through from the bottom up inner rectangular frame
With the middle part of the top board of outer rectangular frame, nut is arranged on the top of outer rectangular frame top board, high-strength bolt connection to be measured
Lower section of the secondary head in inner rectangular frame top board.
The base plate of the outer rectangular frame is connected with the base plate of inner rectangular frame by adjustable screw, can adjust spiral shell
Bar is coaxially disposed with high-strength bolt auxiliary connection to be measured, and the lower end of adjustable screw is connected with outer rectangular frame base plate, and upper end is passed through
The base plate of inner rectangular frame is worn, and is connected with the first nut, the first nut is located at the base plate top of inner rectangular frame.
Weld with the base plate of outer rectangular frame the lower end of adjustable screw.
Compared with prior art the utility model has the advantages that：
Moment of torsion system of the device of measurement high-strength bolt auxiliary connection torque coefficient of the present utility model in measurement bolt connection pair
During number k, the moment of torsion that torque wrench applies is measured by torque sensor and shown by moment of torsion display, while by unidirectionally should
Become the axial strain of piece measurement bolt connection pair and shown by resistance strain gauge, pass through the moment of torsion energy of surveyed stretching strain and applying
Torque coefficient k is enough calculated, device of the present utility model can be threaded through journey there is provided accurate data to applying for operating personnel,
The precision of precise control when enabling manual work.
Further, the impact of shank of bolt all directions discontinuity is reduced by arranging multiple unidirectional foil gauges, from
And cause the axial strain value of measurement more accurate, it is ensured that the precision of measurement.
Further, the utility model accommodates the recessed of the wire being connected with unidirectional foil gauge by opening on screw rod
Groove, wire is imbedded groove, and the lower end of groove extends downwardly and through the head of high-strength bolt auxiliary connection to be measured, therefore effectively
Protect connection foil gauge wire it is without damage.
Further, the utility model passes through adjustable by the base plate of outer rectangular frame and the base plate of inner rectangular frame
Section screw rod connection, can control the suitable scope of activities of inner rectangular frame, so as to meet different length by adjusting screw rod length
The high-strength bolt auxiliary connection to be measured of degree, need to only change top board and the top of inner rectangular frame of the outer rectangular frame of different pore size
Plate, you can meet the high-strength bolt auxiliary connection to be measured of different-diameter.
Test device assembling of the present utility model is simple, and simple operation only need to be to described high-strength bolt auxiliary connection to be measured
Foil gauge is pasted, applying moment of torsion to nut can calculate torque coefficient, the detection of small lot torque coefficient is very suitable for, to reality
The measurement of the data tested provides reliable guarantee.
【Description of the drawings】
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 (a) is the structural representation of high-strength bolt auxiliary connection drilling to be measured and foil gauge arrangement, and Fig. 2 (b) is Fig. 2 (a)
Upward view, Fig. 2 (c) be Fig. 2 (a) in section B-B schematic diagram；
Fig. 3 is the structural representation of specimen appliance to be measured and test specimen charger；
Wherein, 1 be outermost side floor panels, 2 be outer side shield, 3 be the first high-strength bolt, 4 be inner side base plate, 5 be inner side baffle,
6 is adjustable screw, 6-1 is the first nut, 7 is lateral roof, 8 is the second high-strength bolt, 9 is moment of torsion display, 10 is to cover
Cylinder, 11 be torque sensor, 12 be torque wrench, 13 be resistance strain gauge, 14 be wire, 15 be high-strength bolt to be measured connect
Secondary, 15-1 is nut, 16 is inner side top board, 17 is the 3rd high-strength bolt, 18 is unidirectional foil gauge, 19 is groove.
【Specific embodiment】
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1 to Figure 3, the device of measurement high-strength bolt auxiliary connection torque coefficient of the present utility model includes to be tested
Part device, test piece fixing device, test specimen charger, data collecting system：
Test piece fixing device includes outer rectangular frame, inner rectangular frame, the first high-strength bolt 3, adjustable screw
6th, the second high-strength bolt 8, the 3rd high-strength bolt 17, wherein outer rectangular frame include that outermost side floor panels 1, outer side shield 2, outside are pushed up
Plate 7, inner rectangular frame includes inner side base plate 4, inner side baffle 5, inner side top board 16；
Specimen appliance to be measured includes unidirectional foil gauge 18, high-strength bolt auxiliary connection 15 to be measured；
Test specimen charger includes sleeve 10, torque sensor 11, torque wrench 12；
Data collecting system includes moment of torsion display 9, resistance strain gauge 13；
Outermost side floor panels 1 are fixedly installed on fixed installation position by the first high-strength bolt 3；
The bottom symmetrical of outer side shield 2 is welded on the two ends of outermost side floor panels 1, and the top of outer side shield 2 is high-strength by second
Bolt 8 is fixedly connected with lateral roof 7, forms outer rectangular frame；
Inner side base plate 4 is provided with the hole with the same diameter of adjustable screw 6 in center, and adjustable screw 6 is on surface
Be provided with screw thread, bottom welding in the center of outermost side floor panels 1, top through inner side base plate 4 hole and with the first nut 6-1
It is fixedly connected；The bottom symmetrical of inner side baffle 5 is welded on the two ends of inner side base plate 4, and the top of inner side baffle 5 is high-strength by the 3rd
Bolt 17 is fixedly connected to form inner rectangular frame with inner side top board 16；
Inner side top board 16 and lateral roof 7 are provided with the hole matched with the diameter of high-strength bolt auxiliary connection 15 to be measured at center
Hole, the screw rod of high-strength bolt auxiliary connection 15 to be measured is passed through from the bottom up through on inner side top board 16 and lateral roof 7 for screw rod
Hole, and with corresponding top board surface be in close contact；
Opening up groove 19 on the screw rod of its head, the lower end of groove 19 is through treating for high-strength bolt auxiliary connection 15 to be measured
The head of high-strength bolt auxiliary connection 15 is surveyed, unidirectional foil gauge 18 is arranged on the screw surface that the upper end of groove 19 terminates to locate, and is justifying
Circumferential direction is arranged symmetrically, and unidirectional foil gauge 18 arranges two, and both mean strains can be taken as the screw rod in measurement
Stretching strain；The wire 14 connected on unidirectional foil gauge 18 is imbedded in groove 19, by wire 14 from high-strength bolt auxiliary connection to be measured
15 head is drawn, and is finally fixedly connected wire 14 with head；
One end of sleeve 10 opens up the holding tank matched with the appearance and size of nut 15, and nut 15 is hex-head nut, another
End is provided with cylindrical boss, and lug boss is provided with screw thread；The one end of torque sensor 11 is provided with and cylindrical boss shape chi
The groove of very little matching, the other end is provided with hex bosses；The lower end of torque wrench 12 is provided with and hex bosses geomery
The groove matched somebody with somebody；
The nut 15-1 coordinated on high-strength bolt auxiliary connection 15 to be measured is connected with sleeve 10, sleeve 10 and torque sensor 11
It is connected, torque sensor 11 is connected with torque wrench 12, and torque sensor 11 is connected with moment of torsion display 9；
Resistance strain gauge 13 is made up of measuring bridge, amplifier, display instrument and reading mechanism etc., is attached to high-strength spiral shell to be measured
Tether and connect, the unidirectional foil gauge 18 on high-strength bolt auxiliary connection 15 to be measured is connected on measuring bridge by wire 14, and is gone here and there therewith
A path is unified into, the deformation that screw rod is produced by moment of torsion is recorded, and signal is sent to resistance strain gauge so that measuring bridge has electricity
Pressure output, amplified device reads corresponding strain value on resistance strain gauge after amplifying by display.
The utility model patent is divided into following four step when torque coefficient k tests are carried out：
The first step, outermost side floor panels 1 are fixed on the ground by the first high-strength bolt 3, outer side shield 2 with by outermost side floor panels
1 welding, then lateral roof 7 is connected with outer side shield 2 by the second high-strength bolt 8, make outermost side floor panels 1, lateral roof 7 and two
Individual outer side shield 2 forms an outer rectangular frame；Inner side top board 16 is connected by the 3rd high-strength bolt 17 with inner side baffle 5,
And form inner rectangular frame together with inner side base plate 4；The adjustable spiral shell that inner side base plate 4 passes through the welding on outermost side floor panels 1
The first nut 6-1 being connected on bar 6 and adjustable screw 6 is connected with outermost side floor panels 1, so that inner rectangular frame
An entirety is formed with outer rectangular frame, and adjustable spiral shell can be adjusted according to the length of high-strength bolt auxiliary connection 15 to be measured
Bar 6 is to correct position；
Second step, two unidirectional foil gauges 18 are symmetrically attached to the 19 high-strength bolt auxiliary connections 15 to be measured of having opened groove
On screw rod, wire is imbedded in groove, and wire is drawn from the end of high-strength bolt auxiliary connection 15 to be measured, to be measured high-strength
The head end of bolt connection pair 15 is fixed on the top board of inner rectangular frame, and nut end is fixed on the top board of outer rectangular frame
On, and wire from nut go out draw be connected with resistance strain gauge；
3rd step, is enclosed within nut 15-1 according to the suitable sleeve 10 of size Selection of high-strength bolt auxiliary connection 15 to be measured,
The torque sensor 11 of suitable dimension is selected in the upper end of sleeve 10 according to cylindrical protrusions and screw in wherein, in torque sensor
Moment of torsion display 9 is connected in 11, to show registration, groove and the torque sensor 11 of torque wrench 12 when moment of torsion is applied
Hexagon projection it is closely coupled so that test specimen charger formed an entirety；
4th step, when test is needed, the moment of torsion for steadily applying in a balanced way to draft is carried out to torque wrench 12, and in moment of torsion
Read on display 9 and draft registration, due under the effect of certain moment of torsion, axle power being generated at screw rod, there occurs deformation, elongation
Measured by unidirectional foil gauge 18 and measurement signal is passed to into resistance strain gauge 13, read on the display of resistance strain gauge 13
Go out to strain registration, take the stretching strain of the mean strain as screw rod of two foil gauges；
Pass through P=EA ε again1, pretension P is calculated, according still further to《Code for acceptance of construction quality of steel structures》(GB50205-
2001) the formula k=T/ (DP) of regulation draws torque coefficient, and the arithmetic mean of instantaneous value and standard deviation of calculated torque coefficient.
Claims (7)
1. it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that include for high-strength bolt to be measured
The fixing device that auxiliary connection (15) is fixedly connected, is arranged on nut (15-1) place coordinated with high-strength bolt auxiliary connection (15) to be measured
For applying the torque wrench (12) of moment of torsion for nut (15-1), torque wrench (12) is connected by sleeve (10) and nut (15-1)
Connect, torque sensor (11), torque sensor (11) and moment of torsion display (9) are provided between torque wrench (12) and sleeve (10)
Connection, the screw rod between nut (15-1) and high-strength bolt auxiliary connection (15) head to be measured is provided with measurement high-strength bolt to be measured and connects
The unidirectional foil gauge (18) of secondary (15) screw rod axial strain is connect, unidirectional foil gauge (18) is connected with resistance strain gauge (13).
2. it is according to claim 1 it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that it is described
Unidirectional foil gauge (18) arranges multiple, and the circumferencial direction in high-strength bolt auxiliary connection (15) screw rod to be measured is symmetrical arranged.
3. it is according to claim 2 it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that it is described
Unidirectional foil gauge (18) arranges two.
4. it is according to claim 1 it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that it is described
Offer on the screw rod of high-strength bolt auxiliary connection (15) to be measured for accommodating the wire (14) being connected with unidirectional foil gauge (18)
Groove (19), the upper end of groove (19) extends to the lower end of unidirectional foil gauge (18), and the lower end of groove (19) extends downwardly and passes through
Wear the head of high-strength bolt auxiliary connection (15) to be measured.
5. the device of a kind of measurement high-strength bolt auxiliary connection torque coefficient according to claim 1, it is characterised in that fixed
Device includes inner rectangular frame and outer rectangular frame, and inner rectangular frame and outer rectangular frame are included in top
Top board, the base plate being below and the baffle plate in both sides, the two ends of baffle plate are fixedly connected respectively with top board and base plate, inner side square
Shape framework is arranged on the inside of outer rectangular frame and corresponding sides are parallel, and outer rectangular frame is fixed and its base plate and inner rectangular
The base plate connection of framework, the screw rod of high-strength bolt auxiliary connection (15) to be measured is from the bottom up through inner rectangular frame and outside rectangular
The middle part of the top board of framework, nut (15-1) is arranged on the top of outer rectangular frame top board, high-strength bolt auxiliary connection to be measured
(15) lower section of the head in inner rectangular frame top board.
6. it is according to claim 5 it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that it is described
The base plate of outer rectangular frame is connected with the base plate of inner rectangular frame by adjustable screw (6), adjustable screw (6) with treat
Survey high-strength bolt auxiliary connection (15) to be coaxially disposed, the lower end of adjustable screw (6) is connected with the base plate of outer rectangular frame, upper end
Through the base plate of inner rectangular frame, and the first nut (6-1) is connected with, the first nut (6-1) is located at inner rectangular frame
The base plate top of frame.
7. it is according to claim 6 it is a kind of measurement high-strength bolt auxiliary connection torque coefficient device, it is characterised in that it is adjustable
Weld with the base plate of outer rectangular frame the lower end of section screw rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621159036.5U CN206114179U (en) | 2016-10-31 | 2016-10-31 | Measure device that high strength bolt connects vice torque coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621159036.5U CN206114179U (en) | 2016-10-31 | 2016-10-31 | Measure device that high strength bolt connects vice torque coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114179U true CN206114179U (en) | 2017-04-19 |
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ID=58528053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621159036.5U Expired - Fee Related CN206114179U (en) | 2016-10-31 | 2016-10-31 | Measure device that high strength bolt connects vice torque coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114179U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289622A (en) * | 2016-10-31 | 2017-01-04 | 西安建筑科技大学 | A kind of device and method measuring high-strength bolt auxiliary connection torque coefficient |
| CN110595655A (en) * | 2019-10-22 | 2019-12-20 | 广东高标电子科技有限公司 | Electric bicycle torque detection device and electric bicycle |
| CN110873623A (en) * | 2019-11-28 | 2020-03-10 | 国家电网有限公司 | Torque wrench calibration device and calibration method |
| CN114061819A (en) * | 2021-10-20 | 2022-02-18 | 广州建筑股份有限公司 | Scaffold fastener tightening torque monitoring device |
-
2016
- 2016-10-31 CN CN201621159036.5U patent/CN206114179U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289622A (en) * | 2016-10-31 | 2017-01-04 | 西安建筑科技大学 | A kind of device and method measuring high-strength bolt auxiliary connection torque coefficient |
| CN110595655A (en) * | 2019-10-22 | 2019-12-20 | 广东高标电子科技有限公司 | Electric bicycle torque detection device and electric bicycle |
| CN110873623A (en) * | 2019-11-28 | 2020-03-10 | 国家电网有限公司 | Torque wrench calibration device and calibration method |
| CN114061819A (en) * | 2021-10-20 | 2022-02-18 | 广州建筑股份有限公司 | Scaffold fastener tightening torque monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20201031 |