CN208383105U - A kind of pressure spring testing device - Google Patents
A kind of pressure spring testing device Download PDFInfo
- Publication number
- CN208383105U CN208383105U CN201821107412.5U CN201821107412U CN208383105U CN 208383105 U CN208383105 U CN 208383105U CN 201821107412 U CN201821107412 U CN 201821107412U CN 208383105 U CN208383105 U CN 208383105U
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- Prior art keywords
- pressure
- pressure spring
- measurement
- pressure sensor
- force
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Abstract
The utility model discloses a kind of pressure spring testing devices, it is processed for high-accuracy and constant pressure valve, the pressure spring has length value a in a free state, the high-accuracy and constant pressure valve has the pressure values p of setting, including test chassis, pressure sensor, pressurizing device and decrement reading device, the pressurizing device and pressure sensor face, the pressure spring is placed between the pressurizing device and pressure sensor, pressure is applied to the pressure spring by the pressurizing device, the reaction force of the pressure spring forms pressure on the pressure sensor, when the pressure is equal to the pressure values p of high-accuracy and constant pressure valve setting, the pressure spring generates pressured state shortening value b under pressure p effect, the decrement reading device reacts pressured state shortening value b.This pressure spring testing device structure is simple, easy to operate.
Description
Technical field
The utility model relates to constant pressure valves to produce and process technical field, especially one kind for the processing of high-accuracy and constant pressure valve
Pressure spring testing device.
Background technique
The working principle of constant pressure valve is: as shown in Figure 1, constant pressure valve includes upper valve body 141, lower valve body 142, separating device
143 and elastic device, elastic device be placed in lower valve body 142, upper valve body 141 and lower valve body 142 are separated by separating device 143
Two separate spaces, elastic device include pressure spring 8 and the compression spring hole being located in lower valve body 142 144, and when assembly, pressure spring 8 is pre-
Compression makes it have reaction force to separating device 143, in use, making it for separating when the pressure in upper valve body 141 becomes larger
When the pressure of device 143 is greater than the setting value of elastic device, separating device 143 further compresses pressure spring 8 so that upper valve body 141
It is connected to lower valve body 142, the fluid of upper valve body 141 makes pressure become smaller to the leakage of lower valve body 142, until pressure spring 8 is by separating device
143 reset, to play the effect for keeping 141 pressure of upper valve body constant.In the prior art, the processing technology of constant pressure valve is: will press
The length of spring is set in the margin of tolerance, the depth tolerances value range of compression spring hole is reduced as far as possible, but actual effect obtains
The pressure value fluctuation range that constant pressure valve is opened is big, and the constant pressure constant value of mark is not achieved, the reason is that F=Kx, K value and pressure spring
Material and heat treatment the value that embodies of the combined factors such as effect, the K value of each pressure spring is different from, therefore only controls x value
High-precision constant pressure valve cannot be obtained, while also improving rejection rate, reduces yield.
The thinking of the utility model is that the decrement of pressure spring is tested with the constant pressure value of constant pressure valve, after extrapolating compression
Pressure spring length, with the length value processed springs hole after compression, to ensure that the pressure accuracy of constant pressure valve.
Summary of the invention
The utility model solves the problems, such as to be to provide a kind of pressure spring testing device for the processing of high-accuracy and constant pressure valve.
To solve the above problems, technical solution provided by the utility model is:
A kind of pressure spring testing device, is processed for high-accuracy and constant pressure valve, and the pressure spring has length value in a free state
A, the high-accuracy and constant pressure valve have the pressure values p of setting, including test chassis, pressure sensor, pressurizing device and decrement
Reading device, the pressurizing device include force frame, measurement screw device and measurement motor, and measurement motor drives measurement screw rod
Device rotation, the measurement screw device drive the force frame mobile, the force frame and pressure sensor face, institute
It states pressure spring to be placed between force frame and the pressure sensor, the decrement reading device reacts pressured state shortening value b.
Further technical solution is that the test chassis includes the workbench and motor fixing frame to fix as one, the electricity
The fixed lower section for being placed on workbench of machine, the measurement motor are fixed on the motor fixing frame, and the pressure sensor is fixed
On the workbench, the measurement screw device includes measurement screw rod and matched measurement nut set, the measurement spiral shell
The output shaft of bar and the measurement motor is coaxially affixed, and the lower end of the measurement nut set and the force frame is affixed, described
The affixed force application board in top of force frame, the force application board are placed in the top of the workbench, and the lower end of the force frame is set
In the lower section of the workbench, the pressure sensor protrudes into the force frame and the force application board face.
Further technical solution is, the force frame further includes bottom plate and the n root pull rod being fixed on bottom plate, n >=
3, the top of the pull rod and the force application board are affixed, and force application board lower end surface is fixed with the locating piece of face pressure spring.
Further technical solution is that the pressurizing device further includes the guide post of two fixations on the workbench,
The guide post is parallel to the screw rod, there is pilot hole on the force application board, and the guide post is adapted with the pilot hole.
Further technical solution be further include PLC controller, the pressure spring length testing device further includes pressure inverting
Device, the pressure sensor, pressure transmitter, measurement motor are electrically connected with the PLC controller, and the PLC controller receives
The pressure sensor and the data of measurement motor transmission, and converse the corresponding depth of the compression spring hole.
Further technical solution is that the decrement reading device is the counting module in the PLC controller, institute
It states counting module and converts electric signal for the measurement motor turnning circle and the product for the screw pitch multiplication for testing screw rod, obtain described
Pressured state shortening value b.
Further technical solution is that the workbench upper surface of pressure spring testing device is fixed with pressure sensor mounting base,
The pressure sensor is mounted in the pressure sensor mounting base, and the pressure spring is fixed on the pressure sensor upper end
Face.
Further technical solution is the length value of pressure spring in a free state are as follows: 47 ± 1.0mm.
The utility model has the advantages that the pressure spring testing device of the utility model adopts the technical scheme that measurement motor drives measurement
Screw device rotation, the measurement screw device drive the force frame mobile, pass to the force frame is placed in pressure
Pressure spring between sensor carries out applied voltage test, the length varying value of the pressure spring under a constant is tested, in order to be supplied to
The processing unit (plant) of compression spring hole ensure that pressure spring generates this length varying value referring to the depth for processing compression spring hole, this contrary operation
When suffered pressure it is constant, the length varying value of the pressure spring under a constant is tested by pressure spring testing device, by pressure spring
Length standard value in a free state converses the depth value of corresponding compression spring hole with measured length varying value, convenient for using
Compression spring hole deep processing device processes the depth of the compression spring hole, finally completes the dress of entire constant pressure valve with assembly equipment again
Match, ensure that the precision of constant pressure valve；And the pressure that the utility model can be incuded pressure sensor by PLC controller
Compared with the scheduled pressure values p of constant pressure valve: when reaching the scheduled pressure values p of constant pressure valve, PLC controller control measurement motor
Then stopping movement being held in position block pressure holding pressure spring, decrement reading device reacts pressured state shortening value b, by pressure spring certainly
The depth value for going out corresponding compression spring hole with the differential conversion of pressured state shortening value b by the length value a under state, is supplied to automatic control
The servo motor of pressure spring testing device compression spring hole process equipment processed.Counting module is by the measurement motor turnning circle and tests spiral shell
The product that the screw pitch of bar is multiplied is converted into electric signal, and is converted into the difference of the pressure spring length value a and pressured state shortening value b, just
It is attached control in the electric control gear of PLC controller and processing unit (plant), improves production efficiency.
Detailed description of the invention
Fig. 1 is the cross-sectional view of pressure spring；
Fig. 2 is the structural schematic diagram of the pressure spring testing device of the utility model；
Fig. 3 is the right view of Fig. 2；
Fig. 4 is that the pressure spring testing device of the utility model is used for the circuit control principle block diagram of constant pressure valve system of processing.
Specific embodiment
The utility model is further described combined with specific embodiments below, in the illustrative examples of this utility model
And explanation is used to explain the utility model, but is not intended to limit the scope of the present invention.
As shown in Figure 2 and Figure 3, a kind of pressure spring testing device of the present embodiment is processed, pressure spring 8 for high-accuracy and constant pressure valve
Length value in a free state is in the margin of tolerance, the length value of the pressure spring of the present embodiment in a free state are as follows: 47 ±
1.0mm encloses number: 7.5 circles；The closing of spring tail portion；Outer diameter: 24.2~24.5mm；Line footpath: 3.2 ± 0.10mm；It is arrived in spring-compressed
When 32.2mm, pressure are as follows: 245 ± 10N；Tail portion polishes, and mill both ends inner hole batch cutting edge of a knife or a sword, be heat-treated after impulse- free robustness forming: 350 DEG C are held
It is 30 minutes continuous；Require product indeformable after heat treatment；Material: 304 stainless steels, performance meet AS2837；Spring stiffness: 15 ±
1.0N/mm.High-accuracy and constant pressure valve has the pressure values p of setting.
As shown in Fig. 2, a kind of pressure spring testing device of the present embodiment includes test chassis, pressure sensor 7, pressurizing device
And decrement reading device, pressurizing device include the measurement motor 3 being fixed on motor fixing frame 2, force frame 5 and measurement spiral shell
Lever apparatus 4, measurement motor 3 drive measurement screw device 4 to rotate, and measurement screw device 4 affects force frame 5 mobile, and exert a force frame
Frame 5 and 7 face of pressure sensor, pressure spring 8 is placed between pressure sensor 7 and force frame 5, by force frame 5 to pressure spring 8
Apply pressure, the reaction force of pressure spring 8 forms pressure on pressure sensor 7, when pressure is equal to the setting of high-accuracy and constant pressure valve
When pressure values p, decrement reading device reacts the pressured state shortening value b of pressure spring 8.
As shown in Fig. 2, the test chassis of pressure spring testing device includes the workbench 1 and motor fixing frame 2 to fix as one,
The motor fixing frame 2 is placed in the lower section of workbench 1, and the pressure sensor 8 is fixed on the workbench 1, measures screw rod
Device 4 includes measurement screw rod 41 and matched measurement nut set 101, and measurement screw rod 41 and the output shaft for measuring motor 3 are same
Axis is affixed, and force frame 5 includes bottom plate and the n root pull rod 51 being fixed on bottom plate, n >=3, the measurement nut set of the present embodiment
101 are integrally formed with bottom plate, and the affixed force application board 103 in top for the frame 5 that exerts a force, the top of pull rod 51 and force application board 103 are affixed,
Pressure sensor 7 is protruded into 103 face of force application board in force frame 5, and 1 upper surface of workbench of pressure spring testing device is fixed with pressure
Force snesor mounting base 6, pressure sensor 7 are mounted in pressure sensor mounting base 6, and pressure spring 8 is fixed on pressure sensor 7
End face, 103 lower end surface of force application board are fixed with the locating piece 9 of face pressure spring 8.Measurement motor 3 is servo motor.
In the present embodiment, pressurizing device further includes two guide posts being fixed on workbench 1 102, and guide post 102 is parallel
In there is pilot hole on screw rod 4, force application board 103, guide post 102 is adapted with pilot hole.
Further include PLC controller, seen in conjunction with Fig. 3, Fig. 4, pressure spring length testing device further includes pressure transmitter 71, pressure
Sensor 7, pressure transmitter 71, measurement motor 3 are electrically connected with PLC controller, and PLC controller receives pressure sensor 7 and surveys
Measure the data that motor 3 transmits.PLC controller receives pressure sensor 7, and decrement reading device is the counting on PLC controller
Module, counting module convert electric signal for the product that the screw pitch for measuring 3 turnning circle of motor and test screw rod is multiplied, obtain pressure spring
Pressured state shortening value b, and the difference of pressure spring length value a in a free state and shortening value b is calculated, it is seen in conjunction with Fig. 1, and change
Calculate the corresponding depth of compression spring hole 144.PLC controller measures motor 3 by servo driver drives.
It is seen in conjunction with Fig. 4, in the production of constant pressure valve, pressure spring that PLC controller will be received from pressure spring length testing device
Pressured state shortening value b after being applied constant pressure, and the difference of pressure spring length value a in a free state and shortening value b is calculated,
The feeding motor of the compression spring hole for machining high-precision constant pressure valve and processing electricity for being conveyed to while being electrically connected with PLC controller
Machine, so that measurement and process integration, the utility model is convenient for further increasing production efficiency.
When operation, pressure spring 8 is fixed on pressure sensor 7, measurement motor 3 is then controlled by PLC controller and is rotated,
Screw rod 4 is driven to rotate, the measurement nut set cooperated with screw rod 4 drives force frame 5 and measurement screw device 4, measures nut set
101 to bottom offset so that locating piece 9 be made to push down 8 top of pressure spring, the pressure and the scheduled pressure of constant pressure valve that pressure sensor 7 incudes
Value p compares: when reaching the scheduled pressure of constant pressure valve, PLC controller control measurement 3 stopping of motor movement, it is fixed then to keep
Position block 9 presses pressure spring 8, is directly read numerical value by PLC controller and is conversed corresponding pressure spring hole depth and tolerance and be transmitted to
Compression spring hole process equipment.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (8)
1. a kind of pressure spring testing device is processed for high-accuracy and constant pressure valve, the pressure spring has length value a in a free state,
The high-accuracy and constant pressure valve has the pressure values p of setting, including
Test chassis；
It is characterized by:
Pressure sensor；
Pressurizing device, the pressurizing device include that measurement motor, force frame and measurement screw device, the measurement motor drive
Screw device rotation is measured, the measurement screw device drives the force frame mobile；
Decrement reading device；
The force frame and pressure sensor face, the pressure spring are placed between force frame and the pressure sensor, institute
State decrement reading device reaction pressured state shortening value b.
2. a kind of pressure spring testing device according to claim 1, it is characterised in that: it is one that the test chassis, which includes affixed,
The workbench and motor fixing frame of body, the motor fixing frame are placed in the lower section of workbench, and the measurement motor is fixed on described
On motor fixing frame, the pressure sensor is fixed on the workbench, the measurement screw device include measure screw rod and
The output shaft of matched measurement nut set, the measurement screw rod and the measurement motor is coaxially affixed, the measurement nut
The lower end of set and the force frame is affixed, and the affixed force application board in top of the force frame, the force application board is placed in the work
Make the top of platform, the lower end of the force frame is placed in the lower section of the workbench, and the pressure sensor protrudes into the force
In frame with the force application board face.
3. a kind of pressure spring testing device according to claim 2, it is characterised in that: the force frame further include bottom plate and
The n root pull rod being fixed on bottom plate, n >=3, the top of the pull rod and the force application board are affixed, and force application board lower end surface is fixed with
The locating piece of face pressure spring.
4. a kind of pressure spring testing device according to claim 2, it is characterised in that: the pressurizing device further includes two solid
Fixed guide post on the workbench, the guide post is parallel to the screw rod, there is pilot hole on the force application board, described to lead
Pilot hole described in Xiang Zhuyu is adapted.
5. a kind of pressure spring testing device according to claim 2, it is characterised in that: the workbench upper surface is fixed with pressure
Force snesor mounting base, the pressure sensor are mounted in the pressure sensor mounting base, and the pressure spring is fixed on described
Pressure sensor upper surface.
6. according to claim 1 to 5 a kind of described in any item pressure spring testing devices, it is characterised in that: further include PLC control
Device, the pressure spring length testing device further includes pressure transmitter, the pressure sensor, pressure transmitter, measurement motor with
The PLC controller electrically connects, and the PLC controller receives the pressure sensor and measures the data of motor transmission.
7. a kind of pressure spring testing device according to claim 6, it is characterised in that: the decrement reading device is institute
State the counting module in PLC controller, the counting module is by the measurement motor turnning circle and tests the screw pitch phase of screw rod
The product multiplied is converted into electric signal, and is converted into the difference of the length value a and pressured state shortening value b of the pressure spring.
8. a kind of pressure spring testing device according to any one of claims 1 to 5, it is characterised in that: the pressure spring is in freedom
Length value under state are as follows: 47 ± 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107412.5U CN208383105U (en) | 2018-07-11 | 2018-07-11 | A kind of pressure spring testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107412.5U CN208383105U (en) | 2018-07-11 | 2018-07-11 | A kind of pressure spring testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208383105U true CN208383105U (en) | 2019-01-15 |
Family
ID=64962659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821107412.5U Expired - Fee Related CN208383105U (en) | 2018-07-11 | 2018-07-11 | A kind of pressure spring testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208383105U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730055A (en) * | 2020-12-18 | 2021-04-30 | 三峡大学 | Testing device and method for simulating drawing of deep soil layer constant-resistance soil anchor |
| CN114370799A (en) * | 2021-12-31 | 2022-04-19 | 浙江兰菱机械股份有限公司 | Spring compression height detection method |
-
2018
- 2018-07-11 CN CN201821107412.5U patent/CN208383105U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730055A (en) * | 2020-12-18 | 2021-04-30 | 三峡大学 | Testing device and method for simulating drawing of deep soil layer constant-resistance soil anchor |
| CN114370799A (en) * | 2021-12-31 | 2022-04-19 | 浙江兰菱机械股份有限公司 | Spring compression height detection method |
| CN114370799B (en) * | 2021-12-31 | 2023-07-28 | 浙江兰菱机械股份有限公司 | Spring pressure and height detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210508 Address after: Room v015, 6th floor, 396 Jinling East Road, Huangpu District, Shanghai Patentee after: Kaao Trading (Shanghai) Co.,Ltd. Address before: 529729 A District, Dongxi development area, Heshan Town, Jiangmen, Guangdong Patentee before: HESHAN METHVEN BATHROOM Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20210711 |