CN113514020A - Tool for service life test of linear displacement sensor - Google Patents
Tool for service life test of linear displacement sensor Download PDFInfo
- Publication number
- CN113514020A CN113514020A CN202110490084.1A CN202110490084A CN113514020A CN 113514020 A CN113514020 A CN 113514020A CN 202110490084 A CN202110490084 A CN 202110490084A CN 113514020 A CN113514020 A CN 113514020A
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- China
- Prior art keywords
- displacement sensor
- connecting piece
- linear displacement
- vertical
- 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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a tool for a life test of a linear displacement sensor, which is used for transmitting axial power of a power output shaft on life test equipment to a movable end of the linear displacement sensor and comprises a first connecting piece, a vertical sliding column, a second connecting piece, a transverse sliding column and a clamping piece, wherein one end of the first connecting piece is connected with the power output shaft, the first connecting piece is connected with the vertical sliding column in a sliding manner, the lower end of the vertical sliding column is connected with the upper end of the second connecting piece, the second connecting piece is connected with the transverse sliding column in a sliding manner, the upper end of the clamping piece is installed on the second connecting piece, and the lower end of the clamping piece is connected with the movable end of the linear displacement sensor. The tool for the service life test of the linear displacement sensor eliminates the transverse stress and the vertical stress generated by the jumping of the power output shaft, and solves the problems that the test result is influenced, and the linear displacement sensor and service life test equipment are damaged due to the extra stress applied to the movable end of the linear displacement sensor by the power output shaft.
Description
Technical Field
The invention relates to a sensor life test auxiliary device, in particular to a tool for a linear displacement sensor life test.
Background
The linear displacement sensor is used for detecting a linear position, feeding back the linear position of the servo motor and realizing closed-loop control of the servo mechanism. The linear displacement sensor is an important component of a steering engine system, and the sliding life of the linear displacement sensor directly influences the service life of the steering engine system, so that the linear displacement sensor usually requires the sliding life of up to 100W times. In order to verify the reliability of the linear displacement sensor, a life verification test needs to be performed. Because the sliding life of the linear displacement sensor is required to be required for too many times, the test can be completed by using life test equipment.
The traditional life test equipment for the linear displacement sensor consists of a test bed, a power output shaft and other equipment, when the life test equipment is used, the linear displacement sensor is fixed on the test bed, and the movable end of the linear displacement sensor is directly and rigidly connected with the power output shaft of the life test equipment. When the test starts, the power output shaft drives the movable end of the linear displacement sensor to do linear reciprocating motion.
The conventional life test equipment for the linear displacement sensor has the following defects:
because life test equipment is general equipment, so power output shaft's size is longer, and power output shaft can appear the irregular condition of beating when doing reciprocating motion for a long time, and these irregular beats can apply horizontal and/or vertical additional stress to linear displacement sensor's expansion end to influence the test result, can damage linear displacement sensor and life test equipment when serious.
Disclosure of Invention
The invention aims to solve the problems and provide a tool for a service life test of a linear displacement sensor, which can eliminate transverse and vertical stresses generated in the motion process of a power output shaft.
The invention realizes the purpose through the following technical scheme:
the utility model provides a linear displacement sensor frock for life-span test is used for transmitting the axial power that is horizontal power output shaft on the life-span test equipment for linear displacement sensor's expansion end, includes first connecting piece, vertical slip post, second connecting piece, lateral sliding post and holder, the one end of first connecting piece with power output shaft connects, first connecting piece with vertical slip post sliding connection can and only can vertically slide, the lower extreme of vertical slip post with the upper end of second connecting piece is connected, the second connecting piece with lateral sliding post sliding connection can and only can laterally slide, install the upper end of holder on the second connecting piece, the lower extreme of holder with linear displacement sensor's expansion end is connected.
Preferably, in order to reduce sliding friction of the first connecting piece sliding on the vertical sliding column and the second connecting piece sliding on the transverse sliding column, the first connecting piece is provided with a vertical through hole, a vertical first linear bearing is installed in the vertical through hole, the first linear bearing is sleeved outside the vertical sliding column, the second connecting piece is provided with a transverse through hole, a transverse second linear bearing is installed in the transverse through hole, and the second linear bearing is sleeved outside the transverse sliding column.
Preferably, in order to achieve a more stable transmission effect, the two vertical sliding columns and the two first linear bearings are respectively located on two transversely symmetrical sides of the power output shaft, the two horizontal sliding columns and the two second linear bearings are respectively located on two transversely symmetrical sides of the clamping piece, and the vertical central axis of the clamping piece and the horizontal central axis of the power output shaft are located on the same vertical plane.
Preferably, in order to achieve a more stable connection and transmission effect, the upper surface and one side surface of the second connecting piece are provided with mounting grooves to form an inverted L-shaped groove, and the upper section of the clamping piece is inverted L-shaped and is arranged in the inverted L-shaped groove.
Preferably, in order to clamp the movable end of the linear displacement sensor quickly and stably, the lower end of the clamping piece is provided with a clamping groove with an opening at the lower end, two side walls of the clamping groove are provided with screw holes, and the movable end of the linear displacement sensor is arranged in the clamping groove and fixed through a screw.
Preferably, in order to facilitate installation of the tool and not affect normal movement of the linear displacement sensor, two ends of the transverse sliding column are respectively installed on the bottom plate through installation supports.
The invention has the beneficial effects that:
according to the invention, the power output shaft is connected with the first connecting piece, and the first connecting piece is connected with the vertical sliding column and can vertically slide, so that the vertical stress generated by the jumping of the power output shaft is eliminated due to the vertical sliding of the first connecting piece; the vertical sliding column is connected with the second connecting piece, the second connecting piece is connected with the linear displacement sensor, and the second connecting piece is connected with the transverse sliding column and can transversely slide, so that transverse stress generated by jumping of the power output shaft is eliminated due to transverse sliding of the second connecting piece; generally, the tool for the service life test of the linear displacement sensor eliminates the transverse stress and the vertical stress generated by the jumping of the power output shaft, and solves the problems that the test result is influenced and the linear displacement sensor and the service life test equipment are damaged seriously due to the extra stress applied to the movable end of the linear displacement sensor by the irregular jumping of the power output shaft of the service life test equipment of the linear displacement sensor when the power output shaft does reciprocating motion for a long time; the tool for the service life test of the linear displacement sensor is easy to install and debug, and after the installation and debugging are completed, a proper clamping piece can be quickly replaced according to the structural size characteristics of the linear displacement sensor without integral disassembly and assembly, so that the problem of repeated installation and debugging is solved.
Drawings
FIG. 1 is a front view of a tool for testing the service life of a linear displacement sensor according to the present invention;
FIG. 2 is a block diagram taken along line A-A of FIG. 1, on a larger scale than FIG. 1;
fig. 3 is a sectional structural view in the direction B-B in fig. 1, which is on a larger scale than fig. 1.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 3, the tool for testing the service life of the linear displacement sensor is used for transmitting axial power of a power output shaft 12, which is axially horizontal, on a service life test device to a movable end of the linear displacement sensor 5, and comprises a first connecting piece 9, a vertical sliding column 7, a second connecting piece 10, a horizontal sliding column 4 and a clamping piece 6, wherein one end of the first connecting piece 9 is connected with the power output shaft 12, the first connecting piece 9 is connected with the vertical sliding column 7 in a sliding manner and can only vertically slide, the lower end of the vertical sliding column 7 is connected with the upper end of the second connecting piece 10, the second connecting piece 10 is connected with the horizontal sliding column 4 in a sliding manner and can only horizontally slide, the upper end of the clamping piece 6 is installed on the second connecting piece 10, and the lower end of the clamping piece 6 is connected with the movable end of the linear displacement sensor 5.
The first connecting piece 9, the second connecting piece 10 and the clamping piece 6 are all limited in shape and size, application requirements can be met according to actual needs, and regular shapes such as rectangles are generally adopted, so that better balance and stability are realized.
Fig. 1 and 3 also show the inner wall 1 of the linear displacement sensor life test device, namely, the tool is installed in the linear displacement sensor life test device.
As shown in fig. 1 to fig. 3, the present invention also discloses a plurality of more optimized specific structures, and the structures can be combined with one or more specific structures to form a more optimized technical solution according to actual needs.
In order to reduce the sliding friction of the first connecting piece 9 sliding on the vertical sliding column 7 and the second connecting piece 10 sliding on the transverse sliding column 4, the first connecting piece 9 is provided with a vertical through hole and the vertical first linear bearing 8 is installed in the vertical through hole, the first linear bearing 8 is sleeved outside the vertical sliding column 7, the second connecting piece 10 is provided with a transverse through hole and the transverse second linear bearing 11 is installed in the transverse through hole, and the second linear bearing 11 is sleeved outside the transverse sliding column 4.
In order to realize a more stable transmission effect, the vertical sliding columns 7 and the first linear bearings 8 are two and are respectively located on two transversely symmetrical sides of the power output shaft 12, the horizontal sliding columns 4 and the second linear bearings 11 are two and are respectively located on two transversely symmetrical sides of the clamping piece 6, and the vertical central axis of the clamping piece 6 and the horizontal central axis of the power output shaft 12 are located on the same vertical plane.
In order to realize more stable connection and transmission effect, the upper surface and one side surface of the second connecting piece 10 are provided with mounting grooves to form an inverted L-shaped groove, and the upper section of the clamping piece 6 is inverted L-shaped and is arranged in the inverted L-shaped groove.
In order to clamp the movable end of the linear displacement sensor 5 quickly and stably, the lower end of the clamping piece 6 is provided with a clamping groove with an opening at the lower end, two side walls of the clamping groove are provided with screw holes, and the movable end of the linear displacement sensor 5 is arranged in the clamping groove and fixed through screws.
In order to facilitate the installation of the tool without influencing the normal movement of the linear displacement sensor 5, the two ends of the transverse sliding column 4 are respectively installed on the bottom plate 2 through the installation supports 3.
As shown in fig. 1 to 3, the working principle of the tool for testing the service life of the linear displacement sensor of the present invention is as follows:
after the linear displacement sensor service life test equipment is started, the power output shaft 12 reciprocates in the axial direction to drive the first connecting piece 9, the vertical sliding column 7, the second connecting piece 10, the clamping piece 6 and the linear displacement sensor 5 to synchronously and transversely reciprocate, and whether the linear displacement sensor 5 is damaged or not is detected after the required reciprocating times are reached, so that the purpose of service life test is realized. The power output shaft 12 may jump in the axial reciprocating process and form transverse stress and vertical stress, wherein the vertical stress is eliminated due to the vertical sliding of the first connecting piece 9, the transverse stress is eliminated due to the transverse sliding of the second connecting piece 10, and finally the purpose of eliminating the stress of the power output shaft 12 is achieved, so that the protection of the service life test equipment of the linear displacement sensor 5 and the linear displacement sensor is achieved, and the accuracy of the test result is improved.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (6)
1. The utility model provides a frock is used in linear displacement sensor life-span test for axial power transmission who is horizontal power output shaft on with life-span test equipment gives linear displacement sensor's expansion end, its characterized in that: including first connecting piece, vertical slip post, second connecting piece, lateral sliding post and holder, the one end of first connecting piece with power output shaft connects, first connecting piece with vertical slip post sliding connection can just only can vertically slide, the lower extreme of vertical slip post with the upper end of second connecting piece is connected, the second connecting piece with lateral sliding post sliding connection can just only can laterally slide, the upper end of holder is installed on the second connecting piece, the lower extreme of holder with linear displacement sensor's expansion end is connected.
2. The tool for the life test of the linear displacement sensor according to claim 1, characterized in that: the first connecting piece is provided with a vertical through hole and a vertical first linear bearing is installed in the vertical through hole, the first linear bearing is sleeved outside the vertical sliding column, the second connecting piece is provided with a transverse through hole and a transverse second linear bearing is installed in the transverse through hole, and the second linear bearing is sleeved outside the transverse sliding column.
3. The tool for the life test of the linear displacement sensor according to claim 2, characterized in that: the vertical sliding column and the first linear bearing are two and are respectively located on two transversely symmetrical sides of the power output shaft, the horizontal sliding column and the second linear bearing are two and are respectively located on two transversely symmetrical sides of the clamping piece, and the vertical central axis of the clamping piece and the horizontal central axis of the power output shaft are located in the same vertical plane.
4. The tool for testing the service life of the linear displacement sensor according to claim 1, 2 or 3, wherein: the upper surface and one side surface of the second connecting piece are respectively provided with a mounting groove to form an inverted L-shaped groove, and the upper section of the clamping piece is inverted L-shaped and is arranged in the inverted L-shaped groove.
5. The tool for testing the service life of the linear displacement sensor according to claim 1, 2 or 3, wherein: the lower extreme of holder is equipped with lower extreme open-ended centre gripping recess, be equipped with the screw on two lateral walls of centre gripping recess, linear displacement sensor's expansion end is arranged in the centre gripping recess and through the fix with screw.
6. The tool for testing the service life of the linear displacement sensor according to claim 1, 2 or 3, wherein: and two ends of the transverse sliding column are respectively arranged on the bottom plate through mounting supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110490084.1A CN113514020A (en) | 2021-05-06 | 2021-05-06 | Tool for service life test of linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110490084.1A CN113514020A (en) | 2021-05-06 | 2021-05-06 | Tool for service life test of linear displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113514020A true CN113514020A (en) | 2021-10-19 |
Family
ID=78064153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110490084.1A Pending CN113514020A (en) | 2021-05-06 | 2021-05-06 | Tool for service life test of linear displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113514020A (en) |
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2021
- 2021-05-06 CN CN202110490084.1A patent/CN113514020A/en active Pending
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