CN201614575U - Protecting device of screw open-close machine - Google Patents
Protecting device of screw open-close machine Download PDFInfo
- Publication number
- CN201614575U CN201614575U CN2010201216138U CN201020121613U CN201614575U CN 201614575 U CN201614575 U CN 201614575U CN 2010201216138 U CN2010201216138 U CN 2010201216138U CN 201020121613 U CN201020121613 U CN 201020121613U CN 201614575 U CN201614575 U CN 201614575U
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- CN
- China
- Prior art keywords
- torque sensor
- protecting device
- absolute encoder
- close machine
- screw
- 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.)
- Expired - Fee Related
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Abstract
A protecting device of a screw open-close machine belongs to a protecting device of a hydraulic measurement gate. A converter, an absolute encoder and a torque sensor of the protecting device are all mounted on a body of the screw open-close machine, the absolute encoder is connected with a worm, the worm is connected with a driving shaft of a motor, the torque sensor is connected with a connecting shaft of the open-close machine, the absolute encoder and an output signal end of the torque sensor are connected with a PLC controller, and an output end of the PLC controller is connected with the motor of the screw open-close machine. The protecting device has the advantages that a signal output of the torque sensor adopts multiple forms of analog quantity and can directly enter a PLC acquisition system after being adjusted, positive and negative moment can be measured without zeroing and reversing, the protecting device is fast in response, can measure start moment, further can measure moment during a transitional process and can accurately measure real-time moment, and the sensor is fine in linearity and repeatability, high in reliability, compact in structure, small in volume and light in weight. In addition, the protecting device is high in anti-interference characteristic and data reliability.
Description
Technical field
The utility model relates to the protective device that a kind of water conservancy is measured the protective device, particularly a kind of screw open-close machine of gate.
Background technology
At present; water conservancy measurement gate generally adopts axial pin type or pressure type load sensor to the protective device of screw open-close machine; load overload to the screw rod machine is protected, and also adopts absolute encoder to be installed on the screw rod machine simultaneously and is connected with screw rod by direct geared.Absolute encoder is used for measuring the hoisting depth of gate and sends instrument to and shows, position limitation protection is carried out in the actuating of relay when reaching spacing up and down.
This type protective device is mounted on the screw rod, measures the stressed of gate, but often malfunctioning easily, when reaching the requirement of loading overload protection in the open and close door process, can not protect the screw rod machine, when the screw rod machine closes screw rod is bent, and accident occurs.
The utility model content
The purpose of this utility model is to provide a kind of: a protective device that makes the screw open-close machine that screw rod is not bent when the screw rod machine closes.
The purpose of this utility model is achieved in that this protective device comprises: screw rod machine fuselage, converter, absolute encoder and torque sensor, converter, absolute encoder and torque sensor are installed on the screw rod machine fuselage, absolute encoder is connected with worm screw, and worm screw is connected with the driving shaft of motor; Torque sensor is connected with the connecting axle of headstock gear, and the output signal end of absolute encoder and torque sensor is connected with the PLC controller, and the output of PLC controller is connected with the motor of screw open-close machine.
Described torque sensor comprises connection pedestal and foil gauge, connect pedestal the torque sensor connector is arranged, at torque sensor connector center is through hole, end in the torque sensor connector has internal tooth, at the other end torque sensor base and fixed disk are arranged, the foil gauge Chip Area is arranged on the torque sensor base, foil gauge sticks on the foil gauge Chip Area, the output line of foil gauge is exported from fixed disk, and installing hole is arranged on fixed disk.
Beneficial effect, owing to adopted such scheme, the connecting axle of screw open-close machine is connected with torque sensor, headstock gear drives gate and operates in up and down and arrive the connecting axle that headstock gear stops to produce spacing up and down time the torsion force drives sensor, its stressed output millivolt signal is amplified through amplifier be transferred to intelligence instrument, judge according to the setting value of instrument whether headstock gear overloads.As the output overload signal that overloads is given controller, the operation of control motor, the safety of support equipment.
The primary signal that the worm screw that this protector measuring gate stressed, absolute encoder are directly gathered motor drive shaft and connected spreads out of makes certainty of measurement and accuracy further improve;
Torque sensor adopts metal resistance strain gauge, and the torque sensor link position adopts spline to connect, stressed evenly, strain sensitivity height, recovery process are fast; Converter links to each other with torque sensor, and the outputting standard analog signal adopts for intelligence instrument.Reach the requirement of loading overload protection in the open and close door process, screw rod was not bent when protection screw rod machine closed, had reached the purpose of this utility model.
Advantage: multiple mode analog quantity is adopted in torque sensor signal output, and signal output can directly enter the PLC acquisition system after adjusting; Need not return to zero and commutate and to measure positive and negative moment; Response is fast, can survey staring torque, more can measure transient process moment; Can accurately measure real-time moment; The linearity of sensor, good reproducibility, reliability height; Sensor construction is tight, volume is little, in light weight.The reliability height of noiseproof feature, data.
Description of drawings
Fig. 1 is the novel structure chart of this reality.
Fig. 2 is the structure chart of the utility model torque sensor.
Among the figure, 1, screw rod machine fuselage; 2, converter; 3, absolute encoder; 4, torque sensor; 1-1, internal tooth; 1-2, foil gauge Chip Area; 1-3, output line; 1-4, installing hole; 1-5, fixed disk; 1-6, torque sensor connector.
The specific embodiment
Embodiment 1: this protective device comprises: screw rod machine fuselage 1, converter 2, absolute encoder 3 and torque sensor 4, converter 2, absolute encoder 3 and torque sensor 4 are installed on the screw rod machine fuselage 1, absolute encoder is connected with worm screw, and worm screw is connected with the driving shaft of motor; Converter links to each other with torque sensor; The link position of torque sensor adopts spline to connect.
Described torque sensor comprises connection pedestal and foil gauge, connect pedestal torque sensor connector 1-6 is arranged, at torque sensor connector 1-6 center is through hole, end in the torque sensor connector has internal tooth 1-1, at the other end torque sensor base and fixed disk 1-5 are arranged, foil gauge Chip Area 1-2 is arranged on the torque sensor base, foil gauge sticks on foil gauge Chip Area 1-2, the output line 1-3 of foil gauge has installing hole 1-4 from fixed disk 1-5 output on fixed disk.
Described PLC controller is the outsourcing product, and model is a Siemens S7-200 series.
Described aperture encoder, adopt rotary-type absolute type encoder, many roads optical channel groove is arranged on the absolute encoder optical code disk, the per pass groove is successively with 2 lines, 4 lines, 8 lines, 16 lines ... layout, like this, in each position of encoder, by reading the logical, dark of per pass groove, obtain one group from 2 zero degree side unique 2 scale codings (Gray code) to 2 n-1 power, this just is called n position absolute encoder.Such encoder is by the decision of the mechanical location of photoelectric code disk, the influence that it is not had a power failure, disturbs.Absolute encoder is unique by each position of mechanical location decision, and it need not memory, need not to look for reference point, and need not count always, when needs location aware, when just goes to read its position.The noiseproof feature of encoder, the reliability of data have been improved greatly.
Claims (2)
1. the protective device of a screw open-close machine, it is characterized in that: this protective device comprises: screw rod machine fuselage, converter, absolute encoder and torque sensor, converter, absolute encoder and torque sensor are installed on the screw rod machine fuselage, absolute encoder is connected with worm screw, and worm screw is connected with the driving shaft of motor; Torque sensor is connected with the connecting axle of headstock gear, and the output signal end of absolute encoder and torque sensor is connected with the PLC controller, and the output of PLC controller is connected with the motor of screw open-close machine.
2. the protective device of screw open-close machine according to claim 1; it is characterized in that: described torque sensor comprises connection pedestal and foil gauge; connect pedestal the torque sensor connector is arranged; at torque sensor connector center is through hole; end in the torque sensor connector has internal tooth; at the other end torque sensor base and fixed disk are arranged; the foil gauge Chip Area is arranged on the torque sensor base; foil gauge sticks on the foil gauge Chip Area; the output line of foil gauge is exported from fixed disk, and installing hole is arranged on fixed disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201216138U CN201614575U (en) | 2010-02-23 | 2010-02-23 | Protecting device of screw open-close machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201216138U CN201614575U (en) | 2010-02-23 | 2010-02-23 | Protecting device of screw open-close machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614575U true CN201614575U (en) | 2010-10-27 |
Family
ID=43000946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201216138U Expired - Fee Related CN201614575U (en) | 2010-02-23 | 2010-02-23 | Protecting device of screw open-close machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201614575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234676A (en) * | 2013-04-27 | 2013-08-07 | 安徽水利开发股份有限公司 | Detection device for load and opening degree of winch hoist as well as detection method thereof |
-
2010
- 2010-02-23 CN CN2010201216138U patent/CN201614575U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234676A (en) * | 2013-04-27 | 2013-08-07 | 安徽水利开发股份有限公司 | Detection device for load and opening degree of winch hoist as well as detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20110223 |