CN111551325A - Spring height precision measurement device - Google Patents
Spring height precision measurement device Download PDFInfo
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- CN111551325A CN111551325A CN202010239793.8A CN202010239793A CN111551325A CN 111551325 A CN111551325 A CN 111551325A CN 202010239793 A CN202010239793 A CN 202010239793A CN 111551325 A CN111551325 A CN 111551325A
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- measuring
- guide rail
- spring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A spring height precision measurement device relates to the field of precision measurement equipment, wherein a rectangular guide rail and a measurement cylinder are arranged at the lower end of a balancing weight; a top plate of the measuring support frame is fixedly arranged below the measuring cylinder and the rectangular guide rail slide block, and the lower end of the rectangular guide rail is provided with a measuring pressure head; a measuring bottom plate is fixedly arranged above the center of the bottom plate of the measuring support frame, a sensor seat and a shifting cylinder are fixedly arranged above the measuring bottom plate, and the sensor seat is positioned under the measuring pressure head and is positioned in the center of a symmetrical optical axis of the support frame; a measuring seat is fixedly arranged above the guide rail sliding block of the shifting cylinder, and a spring to be measured is placed on the measuring seat; the valve height measuring device adopts a modular structure, is exquisite in design and compact in structure, can realize the precise measurement of the height of the spring under the action of constant pressure, can realize flexible adjustment of the constant pressure by replacing counter weights with different masses, and can be applied to the precise measurement occasions of the spring height of various valves needing pressure opening.
Description
Technical Field
The invention relates to the field of precision measurement equipment, in particular to a spring height precision measurement device.
Background
The spring is used as one of valve parts needing pressure opening, special working pressure needs to be borne under the normal working state of the valve, if opening pressure needs to be accurately controlled, the height of the spring needs to be measured under constant pressure, and therefore the height of the spring under the working condition needs to be accurately measured (the accuracy is controlled to be in the micrometer level), so that the valve can meet the working condition requirement.
Disclosure of Invention
The invention aims to provide a spring height precision measuring device which adopts a modular structure, is exquisite in design and compact in structure, can realize the precision measurement of the height of a spring under the action of constant pressure, can flexibly adjust the constant pressure, and can be applied to the precision measurement occasions of the height of the spring of various valve members needing pressure opening.
In order to achieve the purpose, the invention adopts the following technical scheme:
a spring height precision measurement device comprises a balancing weight, a rectangular guide rail, a measurement cylinder, a measurement pressure head, a measurement support frame and a displacement measurement assembly;
the measuring support frame comprises a bottom plate, a shaft seat, an optical axis and a top plate; the number of the optical axes is 2, the number of the shaft seats is 4, and each optical axis is symmetrically fixed between the bottom plate and the top plate through the 2 shaft seats respectively;
the displacement measuring assembly comprises a displacement cylinder, a measuring bottom plate, a measuring guide rail, a sensor seat, a displacement sensor, a measuring seat and a measuring spring;
the balancing weight is fixedly arranged above the rectangular guide rail;
the rectangular guide rail is arranged at the upper position of the center of the measuring support frame, and the lower part of the rectangular guide rail penetrates through the top plate;
the sliding block of the rectangular guide rail is fixedly arranged right above the center of the top plate;
the measuring cylinder is fixedly arranged on one side above the top plate and abuts against the sliding block of the rectangular guide rail;
the measuring pressure head is arranged at the lower end of the rectangular guide rail;
a measuring bottom plate is fixedly arranged above the center of the bottom plate of the measuring support frame, and a sensor seat is fixedly arranged above the measuring bottom plate;
furthermore, the number of the displacement sensors is 2, and the displacement sensors are symmetrically distributed on two sides of the sensor seat and are positioned on the left side and the right side right below the measuring pressure head;
furthermore, the sensor seat and the upper surface of the measuring seat are in a jigsaw design type, and the sensor seat is in a bracket design;
furthermore, a shifting cylinder is fixedly arranged on one side above the measuring bottom plate, a measuring guide rail is fixedly arranged at the center above the measuring bottom plate, a measuring seat is fixedly arranged above a sliding block of the measuring guide rail, and a spring to be measured is placed on the measuring seat.
The invention has the beneficial effects that: adopt the modularization equipment mode, the design is exquisite, and compact structure can realize the precision measurement of constant pressure effect spring height down through the action of gravity of the last part that links firmly of rectangular guide rail, and this constant pressure accessible changes the balancing weight of different masses and realizes nimble regulation, applicable in the precision measurement occasion of its spring height of valve member that multiple needs pressure to open, the commonality is strong, and the range of application is wide.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of a displacement measurement assembly of the present invention.
Description of reference numerals: the device comprises a bottom plate 1, a shaft seat 2, an optical axis 3, a top plate 4, a rectangular guide rail 5, balancing weights 6-8, a measuring cylinder 9, a measuring pressure head 10, a sensor seat 11, a shifting cylinder 12, a measuring bottom plate 13, a displacement sensor 14, a measuring spring 15, a measuring seat 16 and a measuring guide rail 17.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 3, the present invention includes a bottom plate 1, a shaft seat 2, an optical axis 3, a top plate 4, a rectangular guide rail 5, balancing weights 6 to 8, a measuring cylinder 9, a measuring pressure head 10, a sensor seat 11, a shifting cylinder 12, a measuring bottom plate 13, a displacement sensor 14, a measuring spring 15, a measuring seat 16, and a measuring guide rail 17; wherein:
the bottom plate 1, the shaft seat 2, the optical axis 3 and the top plate 4 form a measuring support frame;
the displacement measuring assembly comprises a sensor seat 11, a displacement cylinder 12, a measuring bottom plate 13, a displacement sensor 14, a measuring spring 15, a measuring seat 16 and a measuring guide rail 17;
the balancing weights 6, 7 and 8 are fixedly arranged above the rectangular guide rail 5 and can move up and down along with the guide rail; the balancing weights 6, 7, and 8 represent a plurality of balancing weights or represent a first balancing weight 6, a second balancing weight 7, and a third balancing weight 8, but do not represent the limitation of the specific number, that is, the number of the balancing weights may be more or less (or 1) than that shown in the figure, and as shown in fig. 2, the balancing weights are sequentially the first balancing weight 6, the second balancing weight 7, and the third balancing weight 8 from bottom to top.
The rectangular guide rail 5 is arranged at the upper position of the center of the measuring support frame, and the lower part of a moving part of the rectangular guide rail passes through the top plate 4;
a sliding block of the rectangular guide rail 5 is fixedly arranged right above the center of the top plate 4 and is a fixed part;
the measuring cylinder 9 is fixedly arranged on one side above the top plate 4 and is close to the sliding block of the rectangular guide rail 5, and a piston rod of the measuring cylinder 9 tightly props against the lower end of the balancing weight 6;
the measuring pressure head 10 is fixedly arranged at the lower end of the rectangular guide rail 5 through an adapter and can move up and down along with the guide rail;
as can be seen from the above, the rectangular guide rail 5 includes a slider (or called a sliding support, which abuts against the measuring cylinder 9 as shown in fig. 2) and a rectangular moving column (or rod) with a rectangular interface arranged in the slider, the clump weights 6-8 are connected with the rectangular moving column of the rectangular guide rail 5, and the measuring pressure head is connected with the lower end of the rectangular moving column of the rectangular guide rail 5.
A measuring bottom plate 13 is fixedly arranged above the center of the bottom plate 1 of the measuring support frame;
the number of the displacement sensors 14 is 2, the displacement sensors are symmetrically distributed on two sides of the sensor seat 11 and are positioned on the left side and the right side under the measuring pressure head 10, and the distance between the measuring pressure head 10 and the measuring end of the displacement sensor 14 is smaller than the stroke of the measuring cylinder 9;
in order to switch the working conditions of [ replacement parts ]/[ start measurement ] of a measuring part, a shifting cylinder 12 is fixedly arranged on one side above a measuring bottom plate 13, a measuring guide rail 17 is fixedly arranged at the center above the measuring bottom plate 13, a piston rod of the shifting cylinder 12 tightly pushes against a sliding block of the measuring guide rail 17, a measuring seat 16 is fixedly arranged above the sliding block of the measuring guide rail 17, and a spring 15 to be measured is placed on the measuring seat 16; under the measuring working condition, the rectangular guide rail 5, the measuring pressure head 10 and the measuring spring 15 are in the same axial line position.
In order to keep the radial direction of the measuring spring 15 and the radial direction of the displacement sensor 14 at the same linear position under the measuring working condition, the upper surfaces of the sensor seat 11 and the measuring seat 16 are in a jigsaw design type, namely the shape of the groove on the upper surface of the sensor seat 11 in the figure 3 is matched with the shape of the upper surface of the measuring seat 16. And the sensor seat 11 adopts a bracket type design and is fixedly arranged above the measuring bottom plate 13 and spans the measuring guide rail 17.
The working principle of the displacement measuring assembly is as follows:
fig. 1 shows an initial [ replacement parts ] operating condition in which the piston rod of the displacement cylinder 12 is extended to push out the matching slide of the measuring guide rail 17, thereby pushing out the measuring seat 16 fixed to the slide, pushing out the measuring seat 16 to the outer position of the displacement measuring assembly, and facilitating the replacement of the measuring spring 15;
after the measuring spring 15 is placed, a piston rod of the shifting cylinder 12 drives a sliding block of the measuring guide rail 17, so that a measuring seat 16 fixed on the sliding block is driven to move; when the measuring base 16 moves to the groove position of the sensor base 11 (the groove on the upper surface of the sensor base 11 in fig. 3), that is, when the measuring base 16 is located at the same axial position as the rectangular guide rail 5 and the measuring ram 10, the working condition of [ start measuring ] is entered, and then the switching function of the working condition of [ replacement part ]/[ start measuring ] of the measuring piece is realized.
The working steps of the invention are as follows:
entering the working condition of replacing parts to place the measuring spring 15, and entering the working condition of beginning to measure the height: the measuring cylinder 9 slowly retracts the piston rod, the counter weights 6-8, the moving part of the rectangular guide rail 5 and the measuring pressure head 10 slowly descend, continue to descend after pressing on the displacement sensors 14 and the measuring springs 15, stop descending when the elastic force generated by the springs 15 to be measured is balanced with the gravity generated by the measuring pressure head 10, the mechanism above the measuring pressure head and the counter weights 6-8, read the numerical values of the displacement sensors 14 on the two sides at the moment, and take an average value; the original height of the spring 15 (or the height of the spring 15 when the spring is not stressed) minus the average value is the height (or the length) of the spring 15 in the valve when the spring 15 is stressed and opened, and the measurement precision can meet the requirement of precise measurement of the height of the spring. In another embodiment, as shown in fig. 2, the upper end portions of the displacement sensors 14 on both sides and the upper end portion of the spring 15 are at the same level, so that the displacement sensors (telescopic displacement sensors) and the spring 15 displace synchronously, and the measurement is more accurate, the displacement value is the compression value of the spring 15, and the original height of the spring minus the displacement value is the height of the spring 15 when being compressed in the valve.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (8)
1. A spring height precision measurement device comprises a balancing weight, a rectangular guide rail, a measurement cylinder and a measurement pressure head; the method is characterized in that: the device also comprises a measuring support frame and a displacement measuring component; the measuring cylinder is used for driving the rectangular guide rail to drive the balancing weight and measure the pressure head to extrude the spring, the measuring support frame supports the balancing weight, the rectangular guide rail, the measuring cylinder, the measuring pressure head, the measuring support frame and the displacement measuring assembly, and the displacement measuring assembly is used for driving the measuring support and the moving spring.
2. A spring height precision measuring device according to claim 1, characterized in that: the measuring support frame comprises a bottom plate, a shaft seat, an optical axis and a top plate; the number of the optical axes is 2, the number of the shaft seats is 4, and each optical axis is symmetrically fixed between the bottom plate and the top plate through the 2 shaft seats respectively.
3. A spring height precision measuring device according to claim 1, characterized in that: the displacement measuring component comprises a displacement cylinder, a measuring bottom plate, a measuring guide rail, a sensor seat, a displacement sensor, a measuring seat and a measuring spring.
4. A spring height precision measuring device according to claim 1, characterized in that: the balancing weight is fixedly arranged above the rectangular guide rail; the rectangular guide rail is arranged at the upper position of the center of the measuring support frame, and the lower part of the rectangular guide rail penetrates through the top plate; the slide block of the rectangular guide rail is fixedly arranged right above the center of the top plate; the measuring cylinder is fixedly arranged on one side above the top plate and abuts against the rectangular guide rail sliding block, and a piston rod of the measuring cylinder abuts against the lower end of the balancing weight; the measuring pressure head is fixedly arranged at the lower end of the rectangular guide rail through an adapter.
5. A spring height precision measuring device according to claim 1, characterized in that: a measuring bottom plate is fixedly arranged above the center of the bottom plate of the measuring support frame, and a sensor seat and a measuring guide rail are fixedly arranged above the measuring bottom plate; the number of the displacement sensors is 2, the displacement sensors are symmetrically distributed on two sides of the sensor seat and are positioned on the left side and the right side under the measuring pressure head, and the distance between the measuring pressure head and the measuring end of the displacement sensor is smaller than the stroke of the measuring cylinder.
6. A spring height precision measuring device according to claim 1, characterized in that: in order to ensure that the measuring spring and the displacement sensor are in the same straight line in the radial direction, the shapes of the upper surfaces of the measuring seat and the sensor seat are in a jigsaw design type, the sensor seat is designed in a bracket type, and the measuring guide rail is arranged right below the sensor seat.
7. A spring height precision measuring device according to claim 1, characterized in that: in order to switch the working conditions of [ replacement parts ]/[ start measurement ] of the measuring part, a shifting cylinder is fixedly arranged on one side above a measuring bottom plate, a piston rod of the shifting cylinder tightly pushes a measuring guide rail sliding block, a measuring seat is fixedly arranged above the measuring guide rail sliding block, and a spring to be measured is placed on the measuring seat; under the measuring working condition, the rectangular guide rail, the measuring pressure head and the measuring spring are positioned at the same axial line position.
8. A spring height precision measuring device according to claim 1, characterized in that: the constant pressure adjustable valve can realize the precision measurement of the height of the spring under the action of constant pressure through the gravity action of the parts fixedly connected on the rectangular guide rail, the constant pressure can be flexibly adjusted by replacing counter weights with different masses, the constant pressure adjustable valve is suitable for precision measurement occasions of the height of the spring of various valves needing pressure opening, and the measurement precision can reach the level of mum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239793.8A CN111551325A (en) | 2020-03-31 | 2020-03-31 | Spring height precision measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239793.8A CN111551325A (en) | 2020-03-31 | 2020-03-31 | Spring height precision measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN111551325A true CN111551325A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010239793.8A Pending CN111551325A (en) | 2020-03-31 | 2020-03-31 | Spring height precision measurement device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809471A (en) * | 2012-08-06 | 2012-12-05 | 咸阳中兵机电装备制造有限责任公司 | Helical compression spring sorting machine |
| CN103234488A (en) * | 2013-04-15 | 2013-08-07 | 机科发展科技股份有限公司 | Intelligent thickness and parallelism detector |
| CN203745109U (en) * | 2013-12-26 | 2014-07-30 | 比亚迪股份有限公司 | Measuring device for measuring elastic force of elastic members of steering pipe column |
| CN106546397A (en) * | 2017-01-10 | 2017-03-29 | 深圳市思榕科技有限公司 | Spring mechanical performance evaluation instrument |
| CN207163680U (en) * | 2017-05-11 | 2018-03-30 | 江苏凯尔生物识别科技有限公司 | A kind of negative testing tool |
| CN110470421A (en) * | 2019-09-11 | 2019-11-19 | 江苏爱库达智能装备技术有限公司 | Turbine case rocker arm elastic slice remnants force detection system |
| CN110793738A (en) * | 2019-11-14 | 2020-02-14 | 湖北汽车工业学院 | Air spring static vertical stiffness testing device and method |
-
2020
- 2020-03-31 CN CN202010239793.8A patent/CN111551325A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809471A (en) * | 2012-08-06 | 2012-12-05 | 咸阳中兵机电装备制造有限责任公司 | Helical compression spring sorting machine |
| CN103234488A (en) * | 2013-04-15 | 2013-08-07 | 机科发展科技股份有限公司 | Intelligent thickness and parallelism detector |
| CN203745109U (en) * | 2013-12-26 | 2014-07-30 | 比亚迪股份有限公司 | Measuring device for measuring elastic force of elastic members of steering pipe column |
| CN106546397A (en) * | 2017-01-10 | 2017-03-29 | 深圳市思榕科技有限公司 | Spring mechanical performance evaluation instrument |
| CN207163680U (en) * | 2017-05-11 | 2018-03-30 | 江苏凯尔生物识别科技有限公司 | A kind of negative testing tool |
| CN110470421A (en) * | 2019-09-11 | 2019-11-19 | 江苏爱库达智能装备技术有限公司 | Turbine case rocker arm elastic slice remnants force detection system |
| CN110793738A (en) * | 2019-11-14 | 2020-02-14 | 湖北汽车工业学院 | Air spring static vertical stiffness testing device and method |
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