CN109990939A - A kind of device of roller bolt stress in triangulation feed screw nut - Google Patents
A kind of device of roller bolt stress in triangulation feed screw nut Download PDFInfo
- Publication number
- CN109990939A CN109990939A CN201910389648.5A CN201910389648A CN109990939A CN 109990939 A CN109990939 A CN 109990939A CN 201910389648 A CN201910389648 A CN 201910389648A CN 109990939 A CN109990939 A CN 109990939A
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- CN
- China
- Prior art keywords
- roller bolt
- nut
- force snesor
- feed screw
- triangulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of devices of the roller bolt stress in triangulation feed screw nut, belong to screw rod detection technique field.Technical solution of the present invention includes nut, is provided with roller bolt in nut；The sensor that three measurement directions are in 120 °, side contacts outside three sensors and roller bolt upper end are also fixedly installed on nut；Bushing is provided on nut, suit calibration axis in bushing demarcates the hole that position coincidence is provided on axis and bushing, and roller bolt lower end is protruded into the hole on calibration axis and bushing.After calibration axis calibration, one sensor can measure the stress condition of roller bolt when the positive and negative both direction of lead screw moves, by three sensors, the two-dimentional stress condition of roller bolt can measure, effectively solve the problems, such as the stress detection of roller bolt in the prior art.
Description
Technical field
The present invention relates to the roller bolt stress detections in feed screw nut, belong to Transit Equipment detection technique field.
Technical background
The movement mechanism of existing track vehicle door system is usually feed screw nut, and two spiral shells are respectively set on double-end lead-screw
Mother, there are two roller bolts in each nut.When guide screw movement with roll pin contacts.Some key parts in track vehicle door system
Installation directly influence the running stability and service life of door, the stress of installation quality and roller bolt is closely related, passes through
The stress condition for measuring roller bolt, to determine the installation parameter of key part, for instructing the installation and maintenance of door system.Due to
Roller bolt size is smaller, and sensor can not be installed at stress, and the nut surrounding space on lead screw is narrow, can not also be mounted directly biography
Sensor.
Summary of the invention
The purpose of the present invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of triangulation silk
The device of roller bolt stress in thick stick nut, it is characterized in that: three force snesors are 1. used, it often may only positive and negative both direction
Stress.2. being mutually 120 degree of placements on the circumference of three sensor installations in a plane, constituting equilateral triangle.3. three
The stress condition of roller bolt is obtained by calculation in the measurement data of force snesor.4. directly measuring roller bolt by calibration
Stress size.5. force snesor passes through software automatic zero set.
The present invention is achieved through the following technical solutions in order to achieve the above object:
The device of roller bolt stress in a kind of triangulation feed screw nut, including nut are provided with roller bolt in nut；
Three measurement direction angles, 120 ° of force snesor each other: the first force snesor, the second force snesor is also fixedly installed on nut
With third force snesor, three force snesors and side contacts outside roller bolt upper end；Bushing is provided on nut, suit mark in bushing
Dead axle, demarcates the hole that position coincidence is provided on axis and bushing, and roller bolt lower end is protruded into the hole on calibration axis and bushing.
Wherein, three force snesors include the mounting base being connected with nut, are arranged in mounting base and have elastic component, in bullet
Property element and roll pin contacts face on be provided with resistance strain gage.
Wherein, elastic element section is U-shaped or V-type elastic piece.
Wherein, roller bolt upper end is provided with pressure ring, and pressure ring is fixed on rolling by the first dormant bolt of roller bolt upper end
On pin.
Wherein, it is provided with bearing in nut, upper end cover and lower cover, lower end is arranged on nut by bearing support in roller bolt
Bearing is fixed in nut by lid.
Wherein, force snesor is installed between end cap up and down, is fixed by screw, nut.
Wherein, upper end cover, three force snesors and lower cover are fixed on nut by the second dormant bolt together.
Wherein, three force snesors use strain ga(u)ge BFH120-3AA.
The utility model has the advantages that the invention has the following advantages:
After calibration axis calibration, a sensor can measure the stress of roller bolt when the positive and negative both direction of lead screw moves
Situation can measure the two-dimentional stress condition of roller bolt by three force snesors, effectively solve roller bolt in the prior art by
The problem of power detects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of measuring device.
Fig. 2 is the schematic diagram of force snesor.
Fig. 3 is the schematic diagram of upper end cover.
Fig. 4 is the schematic diagram of lower cover.
Fig. 5 is the schematic diagram of pressure ring.
Fig. 6 is the schematic diagram of roller bolt.
In figure: 1- feed screw nut, 2- roller bolt, 3- bearing, 4- pressure ring, 5- lower cover, the first dormant bolt of 6-, 7- first
Force snesor, 8- upper end cover, 9- bolt, 10- hex nut, the second force snesor of 11-, 12- third force snesor, 13- second
Dormant bolt, 14- bushing, 15- demarcate axis, 21- elastic element, 22- mounting base.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, the present invention is a kind of device of roller bolt stress in triangulation feed screw nut, including screw rod spiral shell
Mother 1 is provided with roller bolt 2 in feed screw nut 1；The sensor that three measurement directions are in 120 ° is also fixedly installed on feed screw nut 1:
First force snesor 7, the second force snesor 11, third force snesor 12, three sensors and side contacts outside 2 upper end of roller bolt；
Bushing 14 is provided on feed screw nut 1, suit calibration axis 15 in bushing 14 is demarcated on axis 15 and bushing 14 and is provided with position coincidence
Hole, 2 lower end of roller bolt protrude into calibration axis 15 and bushing 14 on hole in.2 upper end of roller bolt is provided with pressure ring 4, and pressure ring 4 passes through
First dormant bolt 6 of 2 upper end of roller bolt is fixed on roller bolt 2.Pressure ring 4 is used to guarantee rolling in the inclination of 2 stress of roller bolt
Dynamic pin 2 and the first force snesor 7, the second force snesor 11, the contacting points position of third force snesor 12 are constant.Feed screw nut 1
It is inside provided with bearing 3, roller bolt 2 is supported by bearing 3.Lower cover 5 is set on feed screw nut 1, and bearing 3 is fixed on by lower cover 5
In feed screw nut 1.First force snesor 7, the second force snesor 11, third force snesor 12 are installed in the groove of upper end cover 8,
It is fixed between upper end cover 8 and lower cover 5 by the second dormant bolt 13 and hexagonal feed screw nut 10.Screw 9 by upper end cover 8, under
End cap 5, the first force snesor 7, the second force snesor 11, third force snesor 12 are fixed on together on feed screw nut 1.It is described
Three force snesors use strain ga(u)ge BFH120-3AA.
As shown in Fig. 2, each force snesor includes the mounting base 22 being connected with feed screw nut 1, it is arranged in mounting base 22
Have elastic component 21, resistance strain gage is provided on the face that elastic element is contacted with roller bolt 2,21 section of elastic element is U
Type or V-type elastic piece.
Bearing 3 in the present invention uses self-aligning ball bearing, is mounted on roller bolt 2.Pressure ring 4 is used on roller bolt 2
The first dormant bolt of countersunk head 6 is fixed.The resistance strain gage of patch on sensor is connected on the electric bridge of dynamic resistance strain instrument, resistance
Deformeter connects data acquisition and signal analyzer, and Data collection and signal analysis instrument connects computer, and computer passes through software
The data of collected power are recorded in real time.
It needs to demarcate before measurement, bushing 14 is initially charged in feed screw nut 1, be reloaded into calibration axis 15 customized, be then charged into
2 component of roller bolt, force snesor etc. after being completed, apply load xi (KN) to calibration axis 15, record data collection and analysis
The data yi that software is read finds out the relationship between them, and yi=f (xi) inputs functional relation obtained by calibrating in software,
Hereafter the data that software is read are exactly the stress size of roller bolt 2.Force snesor is replaced, remaining two force snesor can be demarcated
Parameter.A piece roller bolt 2 installs three force snesors, in 120 ° of placements, when so that roller bolt 2 working, always in hole
Center can detecte the two-dimentional stress condition of roller bolt 2 in this way.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. the device of roller bolt stress in a kind of triangulation feed screw nut, it is characterised in that: including nut (1), nut (1)
Inside it is provided with roller bolt (2)；Also it is fixedly installed three measurement direction angles, 120 ° of force snesor each other on nut (1): first
Force snesor (7), the second force snesor (11) and third force snesor (12), three force snesors and roller bolt (2) upper end
Outer side contacts；It is provided on nut (1) bushing (14), axis (15) and bushing are demarcated in suit calibration axis (15) in bushing (14)
(14) hole of position coincidence is provided on, roller bolt (2) lower end is protruded into the hole on calibration axis (15) and bushing (14).
2. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that: three
A force snesor includes the mounting base being connected with nut (1), is provided with elastomeric element in mounting base, in elastomeric element and is rolled
Resistance strain gage is provided on the face of pin (2) contact.
3. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 2, it is characterised in that:
Elastomeric element section is U-shaped or V-type elastic piece.
4. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
Roller bolt (2) upper end is provided with pressure ring (4), and pressure ring (4) is fixed on rolling by first dormant bolt (6) of roller bolt (2) upper end
On dynamic pin (2).
5. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
It is provided with bearing (3) in nut (1), roller bolt (2) is supported by bearing (3).
6. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
Upper end cover (8) are set on nut (1), the first force snesor (7), the second force snesor (11) and third force snesor (12) installation
Groove in upper end cover (8) is fixed together by the second dormant bolt (13) and nut (10) with lower cover.
7. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
Lower cover (5) are set on nut (1), bearing (3) is fixed in nut (1) by lower cover (5).
8. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
Screw (9) are set on nut (1), by upper end cover (8), force snesor (7), force snesor (11), force snesor (12) and lower end
Lid (5) is fixed on together on nut (1).
9. the device of roller bolt stress in a kind of triangulation feed screw nut according to claim 1, it is characterised in that:
Three force snesors use strain ga(u)ge BFH120-3AA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389648.5A CN109990939A (en) | 2019-05-10 | 2019-05-10 | A kind of device of roller bolt stress in triangulation feed screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389648.5A CN109990939A (en) | 2019-05-10 | 2019-05-10 | A kind of device of roller bolt stress in triangulation feed screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109990939A true CN109990939A (en) | 2019-07-09 |
Family
ID=67136374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910389648.5A Pending CN109990939A (en) | 2019-05-10 | 2019-05-10 | A kind of device of roller bolt stress in triangulation feed screw nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990939A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509192A (en) * | 2020-11-17 | 2022-05-17 | 合肥中车轨道交通车辆有限公司 | Bow net contact force detection device suitable for urban rail transit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004003918A (en) * | 2002-03-28 | 2004-01-08 | Nsk Ltd | Rolling bearing unit for supporting wheel with load-measuring device |
| CN101354300A (en) * | 2008-09-19 | 2009-01-28 | 清华大学 | Bolt strained detection device |
| JP2015219081A (en) * | 2014-05-16 | 2015-12-07 | 株式会社共和電業 | Bolt with sensor, nut with sensor, screw loosening or screw removal detection device, and screw loosening or screw removal monitor system |
| CN107024306A (en) * | 2017-05-26 | 2017-08-08 | 大连理工大学 | A kind of intelligent bolt and method for monitoring complicated loads |
| CN206709997U (en) * | 2017-05-26 | 2017-12-05 | 大连理工大学 | A kind of intelligent bolt for monitoring complicated loads |
| CN107916773A (en) * | 2018-01-11 | 2018-04-17 | 晋江万芯晨电子科技有限公司 | A kind of adjustable scaffold base for surveying screw rod stress |
| CN109696261A (en) * | 2018-12-28 | 2019-04-30 | 南京康尼机电股份有限公司 | A kind of rectangularity measures the device of roller bolt stress in feed screw nut |
-
2019
- 2019-05-10 CN CN201910389648.5A patent/CN109990939A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004003918A (en) * | 2002-03-28 | 2004-01-08 | Nsk Ltd | Rolling bearing unit for supporting wheel with load-measuring device |
| CN101354300A (en) * | 2008-09-19 | 2009-01-28 | 清华大学 | Bolt strained detection device |
| JP2015219081A (en) * | 2014-05-16 | 2015-12-07 | 株式会社共和電業 | Bolt with sensor, nut with sensor, screw loosening or screw removal detection device, and screw loosening or screw removal monitor system |
| CN107024306A (en) * | 2017-05-26 | 2017-08-08 | 大连理工大学 | A kind of intelligent bolt and method for monitoring complicated loads |
| CN206709997U (en) * | 2017-05-26 | 2017-12-05 | 大连理工大学 | A kind of intelligent bolt for monitoring complicated loads |
| CN107916773A (en) * | 2018-01-11 | 2018-04-17 | 晋江万芯晨电子科技有限公司 | A kind of adjustable scaffold base for surveying screw rod stress |
| CN109696261A (en) * | 2018-12-28 | 2019-04-30 | 南京康尼机电股份有限公司 | A kind of rectangularity measures the device of roller bolt stress in feed screw nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509192A (en) * | 2020-11-17 | 2022-05-17 | 合肥中车轨道交通车辆有限公司 | Bow net contact force detection device suitable for urban rail transit |
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