CN104696338B - A kind of fastening bolt of built-in load cell - Google Patents

A kind of fastening bolt of built-in load cell Download PDF

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Publication number
CN104696338B
CN104696338B CN201510021957.9A CN201510021957A CN104696338B CN 104696338 B CN104696338 B CN 104696338B CN 201510021957 A CN201510021957 A CN 201510021957A CN 104696338 B CN104696338 B CN 104696338B
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China
Prior art keywords
ball
blind slot
screw rod
bolt
built
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CN201510021957.9A
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Chinese (zh)
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CN104696338A (en
Inventor
丁桦
张克武
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Institute of Industry Technology Guangzhou of CAS
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Institute of Industry Technology Guangzhou of CAS
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Priority to CN201510021957.9A priority Critical patent/CN104696338B/en
Publication of CN104696338A publication Critical patent/CN104696338A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B35/00Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041Specially-shaped shafts

Abstract

The invention discloses a kind of fastening bolt of built-in load cell, including screw rod and the bolt head for being arranged on screw rod one end, at least one blind slot is provided with the bolt head surface towards the screw rod side, the sensor with lead is provided with blind slot bottom, the pressure conduction element extended in blind slot provided with an end face outside blind slot, lead is through the bolt head and extends to outside the bolt head, the pressure conduction element is ball, and the diameter of ball is more than the depth of the blind slot, the blind slot top is less than the ball gland of the ball diameter provided with diameter, the ball end face is extended to outside ball gland.It is an advantage of the invention that:Structural strength is high, easy to use, and measurement data is easy, and accuracy and stability are high, and service life is long, adapts to complex environment and long-distance transmissions.

Description

A kind of fastening bolt of built-in load cell
Technical field
The present invention relates to a kind of fastening bolt, more particularly, to a kind of fastening bolt for being built-in with force cell.
Background technology
Bolt is most important connector in various Large-Scale Equipments and engineering structure, is widely applied in engineering field.By Joint failure is difficult to be found caused by the factors such as bolt looseness, fatigue and corrosion, easily occurs security incident, causes economic damage Become estranged casualties;Due to bolt special working condition and design feature, to the fastening bolt for connecting equipment and workpiece Stress need to be monitored in real time.Bolt strained whether overload can be found in time by real time on-line monitoring, it is therefore foreseen that thing Therefore and dangerous situation, to take measures in time, while comprehensive analysis can also be carried out to the bolt strained data that monitor, instruct to apply Work and installation, it is ensured that design and the reasonability and economy of construction.But it is due to that bolt is often positioned in master after construction and installation In body structure, conventional detection means can not realize the continuous monitoring to its stressing conditions.Stress inside existing measurement bolt Sensor usually using optical fiber, and need to open up groove on screw rod, processing inconvenience, and easily influence screw-rod structure is strong Degree, the Stability and veracity continuously measured is not high.
The content of the invention
It is an object of the invention to provide the fastening spiral shell of a kind of simple in construction and dynamometry accurate stable built-in load cell Bolt.
The present invention technical solution be:A kind of fastening bolt of built-in load cell, including screw rod and be arranged on The bolt head of screw rod one end, is provided with least one blind slot, in blind slot on the bolt head surface towards the screw rod side Bottom is provided with the pressure conduction element extended in the sensor with lead, blind slot provided with an end face outside blind slot, and lead is passed through The bolt head is simultaneously extended to outside the bolt head, the pressure conduction element be ball, and ball diameter be more than it is described blind The depth of groove, the blind slot top is less than the ball gland of the ball diameter provided with diameter, and the ball end face extends to rolling Outside pearl gland.
Blind slot is provided with bolt head inner surface, the sensor of external lead wire is laid in blind slot bottom, when fastening bolt peace When on workpiece, the pressure of workpiece suffered by bolt head is persistently transferred on the sensor in blind slot by pressure conduction element, Transmitted by lead connection to data acquisition equipment, complete the real time on-line monitoring to bolt.Sensor is built in bolt head Interior, small volume, monnolithic case and common fastening bolt are basically identical, easy for installation, adapt to complex environment and long-distance transmissions, Structural stability is strong, and DATA REASONING is accurate and stability is high.Roll structure intensity is high, uniform force, and pressure transmission is direct, data Stability it is high.Ball is fixed in blind slot by ball gland, scattering and disappearing for ball is prevented.
Pad is provided between the sensor and pressure conduction element.Pad can both protect sensor, again can be by Uniform pressure distribution is conducted to sensor.
The horizontal cross sectional geometry of the pad is identical with the blind slot horizontal cross sectional geometry.Pad can fill full blind slot Horizontal plane, preferably protection sensor and transmission pressure evenly.
Annular is laid with several blind slots on the bolt head surface bolt head inner surface towards the screw rod side. Pressure test is evenly distributed, further increase the Stability and veracity of measurement.
Connector slot is provided with the screw rod head surface away from the screw rod side, is provided with connector slot with the exhausted of insertion jack Edge glue ring, the lead is located in jack.The insulating cement ring with jack is provided with the opposite side of screw head, lead is located in In jack, the connection of lead and data acquisition device is realized by external connector, so that when preventing swivel bolt head fastening bolt The lead twisted phenomena brought.
It is an advantage of the invention that:Structural strength is high, easy to use, and measurement data is easy, and accuracy and stability are high, make With long lifespan, complex environment and long-distance transmissions are adapted to.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the embodiment of the present invention 1;
Accompanying drawing 2 is the structural representation of the embodiment of the present invention 2;
Accompanying drawing 3 is the front view of bolt head in the embodiment of the present invention 3;
Accompanying drawing 4 is the sectional view of bolt head in the embodiment of the present invention 3;
1st, bolt head, 2, screw rod, the 3, first workpiece, 4, second workpiece, 5, blind slot, 6, ball, 7, sensor, 8, lead, 9th, ball gland, 10, pad, 11, connector slot, 12, internal thread, 13, insulating cement ring, 14, jack.
Embodiment
Embodiment 1:
Refering to Fig. 1, a kind of fastening bolt of built-in load cell, including screw rod 2 and the bolt for being arranged on the one end of screw rod 2 First 1, two blind slots 5 are arranged with the surface of bolt head 1 towards the side of screw rod 2, band lead is provided with each bottom of blind slot 5 Ball 6 is provided with 8 sensor 7, blind slot 5, the diameter of ball 6 is more than the depth of blind slot 5.
The end face of ball 6 is extended to outside blind slot 5, when being connected the first workpiece 3 and second workpiece 4 using fastening bolt, The threaded section of screw rod 2 is extended in second workpiece 4, and the side of bolt head 1 is close to the first workpiece 3, the ball 6 in blind slot 5 End face contacted with the first workpiece 3, when fastening bolt it is first 1 when, ball 6 is in close contact with the first workpiece 3, and by pressure continue pass On the sensor 7 for being handed to the bottom of blind slot 5, sensor 7 is exported measurement data to extraneous data acquisition equipment by lead 8 On, realize the real time and on line monitoring to fastening bolt stress.
Use ball 6 to be pressure conduction element in the present embodiment, the elements such as compression leg can also be used to transmit pressure.In addition may be used To lay blind slot in the surface of bolt head 1 annular towards the side of screw rod 2, increase the quantity of piezoelectric transducer, it is further provided survey Measure the Stability and veracity of data.Sensor 7 can be piezoelectric transducer, can also resistance strain type sensor.
Embodiment 2:
It is the fastening bolt of another built-in load cell refering to Fig. 2, including screw rod 2 and is arranged on the one end of screw rod 2 Bolt head 1, is arranged with two blind slots 5 on the surface of bolt head 1 towards the side of screw rod 2, and band is provided with each bottom of blind slot 5 Ball 6 is provided with the sensor 7 of lead 8, blind slot 5, the top of blind slot 5 is less than the ball gland 9 of the diameter of ball 6, rolling provided with diameter The end face of pearl 6 is extended to outside ball gland 9.Pad 10 is provided between ball 6 and sensor 7.
Pad 10 is arranged on sensor 7, and the pressure that can conduct ball 6 is uniformly applied on sensor 7.
Other technical characteristics are same as Example 1, will not be described here.
Embodiment 3:
It is the fastening bolt of another built-in load cell refering to Fig. 3 and 4, including screw rod 2 and is arranged on screw rod 2 one The bolt head 1 at end, wherein the connector slot 11 with internal thread 12 is provided with the bolt head 1 away from the side of screw rod 2, in connector slot 11 It is interior to be provided with insulating cement ring 13, the jack 14 of insertion is provided with insulating cement ring 13, lead 8 is located in jack 14.Connector slot 11 It can connect with externally threaded joint, realize the connection of lead 8 and exogenous data harvester, it is to avoid when tightening bolt, Lead 8 is caused to distort the phenomenon fractureed.Connector slot 11 can also be not provided with internal thread, directly pass through external connector socket connection. Other technical characteristics are same as Example 1, will not be described here.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and the embodiment simultaneously is not used to limit this hair Bright the scope of the claims, all equivalence enforcements or change without departing from carried out by the present invention are intended to be limited solely by the scope of the claims of this case.

Claims (5)

1. a kind of fastening bolt of built-in load cell, including screw rod and the bolt head for being arranged on screw rod one end, its feature exist In:At least one blind slot is provided with the bolt head surface towards the screw rod side, band lead is provided with blind slot bottom Sensor, the pressure conduction element extended to provided with an end face outside blind slot in blind slot, lead is through the bolt head and prolongs Extend outside the bolt head, the pressure conduction element be ball, and ball diameter be more than the blind slot depth, it is described blind Groove top is less than the ball gland of the ball diameter provided with diameter, and the ball end face is extended to outside ball gland.
2. a kind of fastening bolt of built-in load cell according to claim 1, it is characterised in that:In the sensor Pad is provided between the ball.
3. a kind of fastening bolt of built-in load cell according to claim 2, it is characterised in that:The water of the pad Plane section shape is identical with the blind slot horizontal cross sectional geometry.
4. a kind of fastening bolt of built-in load cell according to claim 1, it is characterised in that:Towards the spiral shell Annular is laid with several blind slots on the bolt head surface of bar side.
5. a kind of fastening bolt of built-in load cell according to claim 1 or 2 or 3 or 4, it is characterised in that: Screw rod head surface away from the screw rod side is provided with connector slot, and the insulating cement ring with insertion jack, institute are provided with connector slot Lead is stated to be located in jack.
CN201510021957.9A 2015-01-15 2015-01-15 A kind of fastening bolt of built-in load cell Active CN104696338B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510021957.9A CN104696338B (en) 2015-01-15 2015-01-15 A kind of fastening bolt of built-in load cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510021957.9A CN104696338B (en) 2015-01-15 2015-01-15 A kind of fastening bolt of built-in load cell

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CN104696338A CN104696338A (en) 2015-06-10
CN104696338B true CN104696338B (en) 2017-08-29

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114427A (en) * 2015-07-30 2015-12-02 苏州玄禾物联网科技有限公司 Intelligent autorotation electric control screw
CN111981024A (en) * 2020-08-21 2020-11-24 嘉善辉辉金属制品有限公司 Gasket nut assembly with anti-theft performance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102008769A (en) * 2009-09-08 2011-04-13 北京谊安医疗系统股份有限公司 Force transmission device and injection pump
CN201844897U (en) * 2010-07-22 2011-05-25 吉林市江机民科实业有限公司 Digital 0.1-level tension and compression integrated standard dynamometer
CN104179771A (en) * 2013-05-23 2014-12-03 硅谷微E股份有限公司 Intelligent fastening piece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0828518A (en) * 1994-07-20 1996-02-02 Yamatake Honeywell Co Ltd Fastening mechanism
CN102445300B (en) * 2011-10-09 2013-08-14 北京化工大学 Dynamic grounding pressure test device
CN103498851A (en) * 2013-10-22 2014-01-08 无锡俊达测试技术服务有限公司 Self-testing connecting piece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102008769A (en) * 2009-09-08 2011-04-13 北京谊安医疗系统股份有限公司 Force transmission device and injection pump
CN201844897U (en) * 2010-07-22 2011-05-25 吉林市江机民科实业有限公司 Digital 0.1-level tension and compression integrated standard dynamometer
CN104179771A (en) * 2013-05-23 2014-12-03 硅谷微E股份有限公司 Intelligent fastening piece

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