CN108613614A - A kind of straight stroke valve actuator mechanic transmission clearance detection device and method - Google Patents
A kind of straight stroke valve actuator mechanic transmission clearance detection device and method Download PDFInfo
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- CN108613614A CN108613614A CN201810777732.XA CN201810777732A CN108613614A CN 108613614 A CN108613614 A CN 108613614A CN 201810777732 A CN201810777732 A CN 201810777732A CN 108613614 A CN108613614 A CN 108613614A
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- actuator
- transmission clearance
- mechanic transmission
- dial gauge
- output shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of straight stroke valve actuator mechanic transmission clearance measuring device and methods, it include the extension tablet on valve actuator output shaft, one dial gauge is installed on dial indicator bracket, the gauge head of dial gauge is in close contact with tablet is extended, and realizes the detection of actuator output shaft actual displacement.After doing exercises round about respectively by comparing actuator, the linear displacement difference of actuator output shaft measures the mechanic transmission clearance numerical value of actuator.The present invention can quickly and accurately measure the mechanic transmission clearance numerical value of actuator, and can evaluate the size that the backhaul position error that actuator mechanic transmission clearance is brought influences.
Description
Technical field
The invention belongs to field of fluid machinery, and in particular to a kind of straight stroke valve actuator mechanic transmission clearance detection dress
It sets and method.
Background technology
Straight stroke valve is a kind of important fluid flow control element, its valve body by Direct Travel and mating Direct Travel
Actuator forms.Actuator output is reciprocal linear displacement, has the characteristics that stroke is longer relative to angle stroke actuator, more
It is easy to implement accurate flow-rate adjustment, therefore is widely used in process industrial.
Straight travel regulating valve is by motor drive, by gear reduction and linear displacement switching mechanism by motor
Rotary motion exports, and centre have passed through a series of machine driving links.Between each adjacent actuated element, there is machines
Tool drive gap.When the current orientation of actuator is identical as last orientation, actuator gear, rack, leading screw, spiral shell
Female adjacent drive face has tightly engaged, and the output corner of actuator does not have idle running, the rotary motion of driving motor that can stand
The output shaft of actuator is transmitted to according to the proportionate relationship of transmission ratio；When the current orientation of actuator and last positioning side
To it is opposite when, actuator transmission parts adjacent drive face will first be unclamped from original meshing state, first pass through mechanic transmission clearance
Corresponding idle running, after actuator transmission mechanism tightly engages in a reverse direction, the output shaft of actuator just will produce with
The rotary motion of the proportional relationship of input shaft.As it can be seen that only when the current orientation of actuator is opposite with last time orientation,
Mechanic transmission clearance just has an impact the output shaft angle of actuator；When the current orientation of actuator and last time orientation
When identical, the output shaft angle of actuator will not be had an impact, therefore this problem is usually ignored, result in valve precision
It is not high, be difficult to meet the requirement that modern process industry adjusts high-precision flow.However valve is executed from driving motor to final
The output of device have passed through a series of transmission links, and the transmission parts that wherein each two is in contact have mechanic transmission clearance, difficult
To know mechanic transmission clearance concrete numerical value of the actuator from driving motor to output shaft, mechanic transmission clearance numerical value is bigger, holds
The backhaul positioning accuracy of row device is poorer, and actuator backhaul positioning accuracy is one of the important indicator of actuator positioning accuracy.Cause
This needs to be studied for this problem, measures the concrete numerical value of actuator mechanic transmission clearance, is returned for evaluation actuator
Journey positioning accuracy grade provides Technical Reference.
Invention content
The purpose of the present invention is to provide a kind of straight stroke valve actuator mechanic transmission clearance detection device and method, with
Overcome the problems of the prior art, the present invention can measure the concrete numerical value of the drive gap of valve, to evaluate actuator machine
The size of tool drive gap.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of straight stroke valve actuator mechanic transmission clearance detection device, including driving motor, valve body and dial gauge are driven
The output end of dynamic motor is connected to actuator output shaft, the valve rod of actuator output shaft and valve body by linear displacement mapping device
Be connected, and output shaft locknut be installed on actuator output shaft, valve rod locknut is installed on valve rod, be also equipped on valve rod and its
Vertical extension tablet, and extend tablet and be fixed by output shaft locknut and valve rod locknut, the gauge head of dial gauge and extension
The upper surface of tablet contacts, and the gauge head of dial gauge can be moved synchronously with tablet is extended.
Further, the dial gauge is the dial gauge for detecting linear displacement type.
Further, the dial gauge is fixed by dial indicator bracket.
Further, being equipped in the dial gauge can make gauge head be pressed in the holddown spring extended on tablet.
A kind of straight stroke valve actuator mechanic transmission clearance detection method, includes the following steps：
Step 1：Driving motor is set continuously to be positioned to a direction, until reaching the position L in stroken, record at this time
The reading S of dial gaugen1；
Step 2：Driving motor is set to continue to direction rotational angle θ identical with step 10；
Step 3：Make driving motor to the direction rotational angle θ opposite with step 20, record the reading of dial gauge at this time
Number Sn2, actuator is obtained in this travel position LnThe mechanical transmissioning piece gap B at placenNumerical values recited is Sn1-Sn2。
Further, further include step 4：Change travel position, traversal actuator is from fully closed to all rows of full-gear
Journey value repeats step 2 and step 3, that is, measures mechanic transmission clearance numerical value of the actuator within the scope of total travel.
Compared with prior art, the present invention has technique effect beneficial below：
Apparatus of the present invention when in use, by making driving motor continuously be positioned to direction, until reaching in stroke
The reading of dial gauge at this time is recorded in position；Then so that driving motor is continued to identical direction rotational angle, then invert identical
Angle records percentage meter reading, and the difference read twice is the mechanic transmission clearance size of straight stroke valve actuator, the present invention
It is easy to operate, the concrete numerical value of the drive gap of valve can be rapidly and accurately measured, to evaluate between actuator machine driving
The size of gap.
The feature that the method for the present invention reversely occurs according to actuator mechanic transmission clearance can be measured quickly and accurately
The mechanic transmission clearance numerical value of actuator, and can evaluate what the backhaul position error that actuator mechanic transmission clearance is brought influenced
Size.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Wherein, 1, driving motor, 2, linear displacement mapping device, 3, actuator output shaft, 4, output shaft locknut, 5, valve rod
Locknut, 6, valve rod, 7, valve body, 8, dial indicator bracket, 9, extend tablet, 10, dial gauge.
Specific implementation mode
Present invention is further described in detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, a kind of straight stroke valve actuator mechanic transmission clearance detection device, which is in straight stroke electric
It is improved on valve actuator.Straight stroke electric valve actuator is by driving motor 1, linear displacement mapping device 2, actuator
Output shaft 3, output shaft locknut 4, valve rod locknut 5, valve rod 6, valve body 7 form.Actuator is driven by driving motor 1, by linear
The rotary motion of driving motor 1 is transformed into linear movement and is exported from actuator output shaft 4 by shift transformation mechanism 2, and actuator is defeated
Output shaft locknut 4 is installed on shaft 4, valve rod locknut 5, output shaft locknut 4, valve rod 6, valve rod are installed on the valve rod 6 of valve body 7
Locknut 5 is connected through a screw thread fixation, and the linear movement of actuator output shaft 3 is transmitted to the linear movement of valve rod 6, realizes in valve body
The flow-rate adjustment of through-flow fluid.It can be seen that actuator has from 1 linear shift transformation mechanism 2 of driving motor to actuator output shaft 3
Longer mechanical drive train, there are mechanic transmission clearances.The present invention be actuator output shaft 3, output shaft locknut 4, valve rod 6,
An extension tablet 9 is installed in the junction of valve rod locknut 5, and is fixed by output shaft locknut 4, valve rod locknut 5, extends flat
Plate 9 is moved synchronously with actuator output shaft 3.On dial indicator bracket 8 install a dial gauge 10, the gauge head of dial gauge 10 with prolong
It is stretched flat the contact of plate 9, due to the spring effect in dial gauge, gauge head, which is pressed on, to be extended on tablet 9, is moved synchronously with tablet is extended,
The linear displacement of actuator output shaft can be measured by dial gauge 10.
Since mechanic transmission clearance only just will appear when actuator this orientation is opposite with last time orientation, and
Be not in that therefore, detection method of the invention is as follows when actuator continuous equidirectional positions：
Step 1：The driving motor of actuator is set continuously to be positioned to a direction, until dial gauge 10 generates apparent position
It moves, reaches the position L in stroken, show that the mechanical transmission mechanism of actuator mutually tightly engages, record dial gauge at this time
10 reading Sn1；
Step 2：The driving motor 1 of actuator is set to continue to rotate θ to direction identical with step 10Angular dimension；
Step 3：The driving motor 1 of actuator is set to rotate θ to the direction opposite with step 20Angular dimension records this
When dial gauge 10 reading Sn2, actuator is obtained in this travel position LnThe mechanical transmissioning piece gap B at placenNumerical values recited is Sn1-
Sn2；
Step 4：Change the travel position of actuator, traversal actuator is from fully closed to all stroke values of full-gear, weight
Multiple step 2 and step 3 can be surveyed using the straight stroke valve actuator mechanic transmission clearance measurement experiment device of the present invention
Measure mechanic transmission clearance numerical values recited of the actuator within the scope of total travel.
According to above-mentioned measurement method, the present invention can carry out straight stroke valve actuator mechanic transmission clearance accuracy class and comment
It is fixed：After measuring actuator from fully closed to the mechanic transmission clearance of each point in standard-sized sheet total travel, mechanic transmission clearance is made even
Mean value is denoted as Bn', it is used in combination L to indicate travel values of the actuator from full off state to full-gear；Again by Bn' with the row of actuator
Number of passes value L is quotient, and the result of quotient is expressed as a percentage, and is denoted as d, then d is that actuator mechanic transmission clearance accounts for the entire row of actuator
The percentage of journey；The backhaul positioning accuracy grade of actuator is evaluated according to the numerical values recited of d, the wherein numerical value of d is bigger, shows machine
The backhaul position error rate that tool drive gap is brought is higher；The numerical value of d is smaller, shows the backhaul positioning that mechanic transmission clearance is brought
Error rate is lower.
Claims (6)
1. a kind of straight stroke valve actuator mechanic transmission clearance detection device, which is characterized in that including driving motor (1), valve
The output end of body (7) and dial gauge (10), driving motor (1) is connected to actuator output by linear displacement mapping device (2)
Axis (3), actuator output shaft (3) are connected with the valve rod (6) of valve body (7), and output shaft lock is equipped on actuator output shaft (3)
Female (4) are equipped with valve rod locknut (5) on valve rod (6), perpendicular extension tablet (9) are also equipped on valve rod (6), and prolong
It is stretched flat plate (9) to be fixed by output shaft locknut (4) and valve rod locknut (5), gauge head and the extension tablet (9) of dial gauge (10)
Upper surface contact, and the gauge head of dial gauge (10) can with extend tablet (9) move synchronously.
2. a kind of straight stroke valve actuator mechanic transmission clearance detection device according to claim 1, which is characterized in that
The dial gauge (10) is the dial gauge for detecting linear displacement type.
3. according to a kind of straight stroke valve actuator mechanic transmission clearance detection device described in claim 1, which is characterized in that institute
It is fixed by dial indicator bracket (8) to state dial gauge (10).
4. according to a kind of straight stroke valve actuator mechanic transmission clearance detection device described in claim 1, which is characterized in that institute
Stating to be equipped in dial gauge (10) can make gauge head be pressed in the holddown spring extended on tablet (9).
5. a kind of straight stroke valve actuator mechanic transmission clearance detection method, using straight stroke valve described in claim 1
Actuator mechanic transmission clearance detection device, which is characterized in that include the following steps：
Step 1：Driving motor (1) is set continuously to be positioned to a direction, until reaching the position L in stroken, record at this time hundred
Divide the reading S of table (10)n1；
Step 2：Driving motor (1) is set to continue to direction rotational angle θ identical with step 10；
Step 3：Make driving motor (1) to the direction rotational angle θ opposite with step 20, record dial gauge (10) at this time
Read Sn2, actuator is obtained in this travel position LnThe mechanical transmissioning piece gap B at placenNumerical values recited is Sn1-Sn2。
6. a kind of straight stroke valve actuator mechanic transmission clearance detection method according to claim 5, which is characterized in that
It further include step 4：Change travel position, traversal actuator from fully closed to all stroke values of full-gear, repeat step 2 and
Step 3 measures mechanic transmission clearance numerical value of the actuator within the scope of total travel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777732.XA CN108613614A (en) | 2018-07-16 | 2018-07-16 | A kind of straight stroke valve actuator mechanic transmission clearance detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777732.XA CN108613614A (en) | 2018-07-16 | 2018-07-16 | A kind of straight stroke valve actuator mechanic transmission clearance detection device and method |
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| CN108613614A true CN108613614A (en) | 2018-10-02 |
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| CN201810777732.XA Pending CN108613614A (en) | 2018-07-16 | 2018-07-16 | A kind of straight stroke valve actuator mechanic transmission clearance detection device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109238088A (en) * | 2018-10-26 | 2019-01-18 | 浙江百意伦智控***有限公司 | A kind of the stroke detection equipment and its application method of finished product actuator |
| CN109342051A (en) * | 2018-10-23 | 2019-02-15 | 重庆理工大学 | A kind of drive gap measurement method |
| CN111089530A (en) * | 2019-12-28 | 2020-05-01 | 深圳市越疆科技有限公司 | Measuring device and measuring method for return clearance of planetary gear motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342051A (en) * | 2018-10-23 | 2019-02-15 | 重庆理工大学 | A kind of drive gap measurement method |
| CN109342051B (en) * | 2018-10-23 | 2020-08-25 | 重庆理工大学 | Transmission clearance measuring method |
| CN109238088A (en) * | 2018-10-26 | 2019-01-18 | 浙江百意伦智控***有限公司 | A kind of the stroke detection equipment and its application method of finished product actuator |
| CN109238088B (en) * | 2018-10-26 | 2021-01-26 | 浙江百意伦智控***有限公司 | Stroke detection device of finished product actuator and use method thereof |
| CN111089530A (en) * | 2019-12-28 | 2020-05-01 | 深圳市越疆科技有限公司 | Measuring device and measuring method for return clearance of planetary gear motor |
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