CN203414343U - Dynamic tensile testboard for safety belt - Google Patents
Dynamic tensile testboard for safety belt Download PDFInfo
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- CN203414343U CN203414343U CN201320384493.4U CN201320384493U CN203414343U CN 203414343 U CN203414343 U CN 203414343U CN 201320384493 U CN201320384493 U CN 201320384493U CN 203414343 U CN203414343 U CN 203414343U
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Abstract
A dynamic tensile testboard for a safety belt comprises a bench, a transmission mechanism mounted on the bench, a guide rope connected with a tested safety belt, a tensile detecting unit, a protective gate, a protective detecting unit and a control system, wherein the guide rope is mounted on a special bracket in a bench test zone through pulleys and casing pipes; one end of the guide rope is connected with a hanging ring through a sliding head, and the other end of the guide rope penetrates the casing pipe to be connected with the transmission mechanism; the transmission mechanism is controlled by the control system to drive the guide rope to stretch or restore; the tensile detecting unit is fixed on the other side opposite to the sliding head, and the hanging ring for hanging the tested safety belt is arranged in the front of the tensile detecting unit; the protective gate is mounted on the front side of the test zone; the protective detecting unit is mounted at the closed part of the protective gate. The testboard controls the operation of the transmission mechanism according to the set parameters and monitoring information fed back by both the tensile detecting unit and the protective detecting unit, is high in loading speed and uniform and stable in stress application speed, can dynamically track the tensile value and prompt the test process, and is easy to maintain, low in manufacturing cost and safe in operation.
Description
Technical field
The utility model relates to a kind of safe testing device, particularly relates to a kind of dynamic security tensile force of belt testing table for securing band/rope verification safety test.
Background technology
Belt force test is a more special experiment work process; because securing band is flexible; there is stronger stretching ductility; in process of the test, often can there is broken belt/broken lot phenomenon; after broken belt/broken lot occurs, broken belt flies out; have certain nocuity, existing common version tension tester is not for the test platform of securing band/safety rope exploitation, in use procedure, has the following disadvantages:
1. security protection does not reach requirement: testing table does not have comprehensive personal safety protection facility, once securing band is pulled off in process of the test, the broken belt that splashes jeopardizes testing crew;
2. pilot project performance cannot meet the demands: length can only reach 150Cm conventionally, and maximum pull is 5000N; And the conventional length of securing band, safety rope is 300Cm～500Cm, some safety rope test maximum pull needs 10000N;
3. its transmission/load mode of existing tension tester all adopts screw rod transmission structure, although have advantages of that precision is high, moment is large, also has obvious shortcoming: screw mandrel cost is high, maintenance times is frequent, and maintenance difficulties is large, maintenance cost is high; Test loading velocity is slow, has lengthened test period.
4. value of thrust cannot dynamically be controlled: the elastic property that securing band, safety rope have can produce elastic deformation in process of the test, value of thrust return difference is larger, cause testing value of thrust and have larger variation, existing tension tester is to this not consideration, and test method is that process continues to load, once reach pulling force setting value, just enters static locking state, or break measured medium, maximal value broken in record, can not carry out dynamic tracing and stablize value of thrust, causes test for identification resultant error larger;
5. inefficiency, waste of manpower: existing belt force testing table is not automatic Verification, whole process of the test needs personnel control, cannot meet frock facility and test in a large number, in time, fast demand, even also have a large amount of testing tables to rely on manpower to drive, waste of manpower resource, inefficiency.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of safe and reliable, dynamic security tensile force of belt testing table that efficiency is high, to overcome the existing above-mentioned deficiency of prior art.
The technical scheme that the utility model is taked is: a kind of dynamic security tensile force of belt testing table, described tensile test platform comprises stand, be arranged on gear train, the switch board on stand and be arranged on the pulling force detecting unit in bench test district, the dragline that connects tested securing band, protection detecting unit and protective door grid, and described switch board is for installation control system; Described dragline is arranged on the special stand in bench test district by pulley and sleeve pipe, one side of test site is provided with slide head, one end of dragline connects for articulating the link of tested securing band by slide head, the other end of dragline is connected with gear train through sleeve pipe, and gear train drives stretching or the recovery of dragline under the control of control system; Described pulling force detecting unit is fixed on test site and slide head opposite side in opposite directions, and pulling force detecting unit is anterior to be connected for articulating the link of tested securing band; Described protective door grid is arranged on the front of test site, comprises left-hand door grid and right door grid, and described protection detecting unit is arranged on the closure place of left-hand door grid and right door grid; Described control system is connected with actuator circuit with pulling force detecting unit, protection detecting unit respectively, described control system for according to the test figure of setting and control parameter and pulling force detecting unit, protection detecting unit feedback the running of monitoring information control gear train.
Described control system comprises main control unit, PLC controller, man-machine interface, display unit and power supply unit:
Described main control unit is as the core of control system, be used for according to program and the pulling force detecting unit set, protection detecting unit feedback monitoring information to PLC controller, send steering order, described main control unit comprises single-chip microcomputer, modulation-demodulation circuit, become and send amplifier and DSP/PID digital processing circuit, described single-chip microcomputer is for the treatment of DSP/PID digital processing circuit, the information that man-machine interface is sent here, and by resulting new control information to display unit, PLC controller sends the instruction of controlling gear train, described modulation-demodulation circuit transfers electric signal to for the real-time value of thrust that pulling force detecting unit is measured and carries out modulation treatment,
Described change send amplifier for the signal through modulation treatment being carried out to shaping, amplification and signal conversion, and data are flowed to single-chip microcomputer carry out circuit digital processing, described DSP/PID digital processing circuit is used for change to send test live signal and the single-chip data that amplifier transports to carry out digital signal processing, measurement, contrast with setting data, and will process rear data upload to single-chip microcomputer;
Described PLC controller is for controlling the running of actuating unit according to the instruction of main control unit;
Described man-machine interface is for setting test figure and control parameter to main control unit input;
Described display unit is arranged on the front on top, test site, be used for showing running state information and trystate information, comprise circuit startup, stop, state and the alerting signal of pulling force setting value, pulling force dwell time, normal operation circuit, abnormal running;
Described power supply unit provides working power for main control unit.
Its further technical scheme is: described single-chip microcomputer is the technical grade microcontroller LPC2214 with ARM7 kernel, and with 256kB, embeds memory interface and unique accelerating structure of high speed Flash storer, 128 bit widths.
Its further technical scheme be: described PLC controller adopts Siemens S7-200 series, comprises microprocessor, storer, RS485 communication port and timer circuit in it, and described timer circuit is used for providing the test timing signal time.
Described pulling force detecting unit adopts the tautness meter with Hall pulling force sensor.
Described protection detecting unit adopts capacitive approach switch.
Described gear train comprises variable frequency drives and motor, and described variable frequency drives provides variable-frequency power sources and controls the operating condition of motor for motor, and described motor is connected with dragline with pulley by stainless steel cable.
Described dragline adopts stainless steel cable.
Owing to taking technique scheme, the dynamic security tensile force of belt testing table of the utility model has following beneficial effect:
1. the new shape kind of drive: because the dynamic security tensile force of belt testing table of the utility model is taked the flexible transmission structure of frequency conversion drive+stainless steel cable, its load mode has not only guaranteed complete machine and load to weight ratio, can be overlength, the safety rope of super large (band) provides the larger test space to carry out various project tests, also guarantee the test function of the large load of complete machine and easy operation, there is again loading velocity fast simultaneously, reinforcing is at the uniform velocity stable, easy care, the advantages such as cost is low, securing band/rope overlength size test the difficulty that has better overcome the existence of conventional security tensile test platform is large, overall cost is high, maintenance times is frequent, the disadvantages such as load test process speed is slow,
2. complete personnel safety guard's system: the dynamic security tensile force of belt testing table of the utility model is based on GB 6095-85 < < securing band > >, GB 6096-85 < < securing band method of inspection > > test standard, there is automatic/hand function, security protection system is complete
Owing to having set up protection barrier and protection detecting unit in test site comprehensively, before protection barrier does not effectively seal, main control unit output is locked, test cannot start, once there is broken belt in process of the test, fly the situations such as rope, system automatic shutdown protection, also can press scram button by test people and end immediately test, thereby effectively protect the safety of operating personnel, equipment;
3.LED screen dynamic reminding process of the test: the dynamic security tensile force of belt testing table of the utility model has been set up the LED screen being connected with display unit, capable of dynamic prompting process of the test, both facilitated testing crew operation, and can guarantee that again testing crew understood in real time test and carry out project in safety zone;
4. dynamic tracing value of thrust: common tensile test platform process of the test loads for continuing, test method is that process continues to load, once reach pulling force setting value, just enters static locking state, or until break measured medium, maximal value broken in record.The utility model dynamic security tensile force of belt testing table can be inputted tensile test value, pulling force dwell time according to testing regulations, when pulling force reaches setting value, enter automatic pressure-maintaining state, single-chip microcomputer is compared with setting value according to sampled signal, and automatic tracing is also realized the stepless automatic adjustment of PID by frequency converter.
5. the accelerating structure of uniqueness: because securing band/safety rope is longer, according to constant speed load mode, need the long period, the utility model utilizes the accelerating structure of single-chip microcomputer uniqueness, whole process of the test is divided into sequentially: (1) take-up, (2) load, (3) heavy duty, (4) pressurize, (5) unloading, (6) move back and be with 6 stages, can guarantee normal test, can raise the efficiency again, that is: in take-up with move back the band stage, pulling force unit does not stress, by PLC, switch frequency converter I/O terminal, realize fixed take-up fast frequently, put band, loading and the heavy duty stage, by PLC, switching frequency converter I/O terminal completes vector constant force and operates apart from slow running, at packing stage, adopt PID regulative mode, real-time tracing moment, calculates the poor of real-time force value and setting value, and dynamic adjustments frequency converter frequency completes test pulling force dynamic tracing, pulling force moment dynamic adjustments.
Below in conjunction with drawings and Examples, the technical characterictic of the dynamic security tensile force of belt testing table of the utility model is further described.
Accompanying drawing explanation
Fig. 1: the dynamic security tensile force of belt test platform structure schematic diagram of the utility model;
Fig. 2: the dynamic security tensile force of belt testing table control system block diagram of the utility model.
In figure:
1-stand, 12-test site, 2-dragline, 3-slide head, 4-link, 5-sleeve pipe, 6-protection barrier, 7-protection detecting unit, 8-pulling force detecting unit, 9-switch board, 901-display unit, 902-power supply unit, 903-man-machine interface, 904-main control unit, 905-PLC controller, 10-gear train.
Embodiment
A kind of dynamic security tensile force of belt testing table, described tensile test platform comprises stand 1, be arranged on gear train 10, the switch board 9 on stand and be arranged on the pulling force detecting unit 8 in bench test district 12, the dragline 2 that connects tested securing band, protection detecting unit 7 and protective door grid 6, and described switch board is for installation control system; Described dragline 2 is arranged on the special stand in bench test district 12 by pulley and sleeve pipe 5, one side of test site is provided with slide head 3, one end of dragline connects for articulating the link 4 of tested securing band by slide head, the other end of dragline is connected with gear train through sleeve pipe, and gear train drives stretching or the recovery of dragline under the control of control system; Described pulling force detecting unit 8 is fixed on test site and slide head 3 opposite side in opposite directions, and pulling force detecting unit is anterior to be connected for articulating the link 4 of tested securing band; Described protective door grid 6 is arranged on the front of test site 12, comprises left-hand door grid and right door grid, and described protection detecting unit 7 is arranged on the closure place of left-hand door grid and right door grid; Described control system is connected with gear train 10 circuit with pulling force detecting unit 8, protection detecting unit 7 respectively, described control system for according to the test figure of setting and control parameter and pulling force detecting unit, protection detecting unit feedback the running of monitoring information control gear train; Described control system comprises main control unit, PLC controller, man-machine interface, display unit and power supply unit:
Described main control unit is as the core of control system, be used for according to program and the pulling force detecting unit set, protection detecting unit feedback monitoring information to PLC controller, send steering order, described main control unit comprises single-chip microcomputer, modulation-demodulation circuit, become and send amplifier and DSP/PID digital processing circuit, described single-chip microcomputer is for the treatment of DSP/PID digital processing circuit, the information that man-machine interface is sent here, and by resulting new control information to display unit, PLC controller sends the instruction of controlling gear train, described modulation-demodulation circuit transfers electric signal to for the real-time value of thrust that pulling force detecting unit is measured and carries out modulation treatment,
Described change send amplifier for the signal through modulation treatment being carried out to shaping, amplification and signal conversion, and data are flowed to single-chip microcomputer carry out circuit digital processing, described DSP/PID digital processing circuit is used for change to send test live signal and the single-chip data that amplifier transports to carry out digital signal processing, measurement, contrast with setting data, and will process rear data upload to single-chip microcomputer;
Described PLC controller is for controlling the running of actuating unit according to the instruction of main control unit;
Described man-machine interface is for setting test figure and control parameter to main control unit input;
Described display unit is arranged on the front on top, test site, be used for showing running state information and trystate information, comprise circuit startup, stop, state and the alerting signal of pulling force setting value, pulling force dwell time, normal operation circuit, abnormal running;
Described power supply unit provides working power for main control unit.
Described single-chip microcomputer is the technical grade microcontroller LPC2214 with ARM7 kernel, and with 256kB, embeds memory interface and unique accelerating structure of high speed Flash storer, 128 bit widths.
Described PLC controller adopts Siemens S7-200 series, comprises microprocessor, storer, RS485 communication port and timer circuit in it, and described timer circuit is used for providing the test timing signal time.
Described pulling force detecting unit adopts the tautness meter with Hall pulling force sensor.
Described protection detecting unit adopts capacitive approach switch.
Described gear train comprises variable frequency drives and motor, and described variable frequency drives provides variable-frequency power sources and controls the operating condition of motor for motor, and described motor is connected with dragline 2 with pulley by stainless steel cable.
Described dragline adopts stainless steel cable.
Claims (7)
1. a dynamic security tensile force of belt testing table, it is characterized in that: described tensile test platform comprises stand (1), be arranged on gear train (10), the switch board (9) on stand and be arranged on the pulling force detecting unit (8) in bench test district (12), the dragline (2) that connects tested securing band, protection detecting unit (7) and protective door grid (6), and described switch board is used for installation control system;
Described dragline (2) is arranged on the special stand of bench test district (12) by pulley and sleeve pipe (5), one side of test site is provided with slide head (3), one end of dragline connects for articulating the link (4) of tested securing band by slide head, the other end of dragline is connected with gear train through sleeve pipe, and gear train drives stretching or the recovery of dragline under the control of control system;
Described pulling force detecting unit (8) is fixed on test site and slide head (3) opposite side in opposite directions, and pulling force detecting unit is anterior to be connected for articulating the link (4) of tested securing band;
Described protective door grid (6) is arranged on the front of test site (12), comprises left-hand door grid and right door grid, and described protection detecting unit (7) is arranged on the closure place of left-hand door grid and right door grid;
Described control system is connected with gear train (10) circuit with pulling force detecting unit (8), protection detecting unit (7) respectively, and described control system is for according to the test figure of setting with control parameter and the running of the monitoring information control gear train that pulling force detecting unit, protection detecting unit feed back;
Described control system comprises main control unit, PLC controller, man-machine interface, display unit and power supply unit:
Described main control unit is the core of control system, comprise that single-chip microcomputer, modulation-demodulation circuit, change send amplifier and DSP/PID digital processing circuit, the information that described single-chip microcomputer is sent here for the treatment of DSP/PID digital processing circuit, man-machine interface, and resulting new control information is sent to the instruction of controlling gear train to display unit, PLC controller, described modulation-demodulation circuit transfers electric signal to for the real-time value of thrust that pulling force detecting unit is measured and carries out modulation treatment
Described change send amplifier for the signal through modulation treatment being carried out to shaping, amplification and signal conversion, and data are flowed to single-chip microcomputer carry out circuit digital processing, described DSP/PID digital processing circuit is used for change to send test live signal and the single-chip data that amplifier transports to carry out digital signal processing, measurement, contrast with setting data, and will process rear data upload to single-chip microcomputer;
Described PLC controller is for controlling the running of actuating unit according to the instruction of main control unit;
Described man-machine interface is for setting test figure and control parameter to main control unit input;
Described display unit is arranged on the front on top, test site, be used for showing running state information and trystate information, comprise circuit startup, stop, state and the alerting signal of pulling force setting value, pulling force dwell time, normal operation circuit, abnormal running;
Described power supply unit provides working power for main control unit.
2. dynamic security tensile force of belt testing table according to claim 1, it is characterized in that: described single-chip microcomputer is the technical grade microcontroller LPC2214 with ARM7 kernel, and with 256kB, embed memory interface and unique accelerating structure of high speed Flash storer, 128 bit widths.
3. dynamic security tensile force of belt testing table according to claim 1 and 2, it is characterized in that: described PLC controller adopts Siemens S7-200 series, in it, comprise microprocessor, storer, RS485 communication port and timer circuit, described timer circuit is used for providing the test timing signal time.
4. dynamic security tensile force of belt testing table according to claim 3, is characterized in that: described pulling force detecting unit adopts the tautness meter with Hall pulling force sensor.
5. dynamic security tensile force of belt testing table according to claim 4, is characterized in that: described protection detecting unit adopts capacitive approach switch.
6. dynamic security tensile force of belt testing table according to claim 5, it is characterized in that: described gear train comprises variable frequency drives and motor, described variable frequency drives provides variable-frequency power sources and controls the operating condition of motor for motor, and described motor is connected with dragline (2) with pulley by stainless steel cable.
7. dynamic security tensile force of belt testing table according to claim 6, is characterized in that: described dragline adopts stainless steel cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384493.4U CN203414343U (en) | 2013-07-01 | 2013-07-01 | Dynamic tensile testboard for safety belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384493.4U CN203414343U (en) | 2013-07-01 | 2013-07-01 | Dynamic tensile testboard for safety belt |
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| Publication Number | Publication Date |
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| CN203414343U true CN203414343U (en) | 2014-01-29 |
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|---|---|---|---|
| CN201320384493.4U Expired - Fee Related CN203414343U (en) | 2013-07-01 | 2013-07-01 | Dynamic tensile testboard for safety belt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411829A (en) * | 2013-07-01 | 2013-11-27 | 南宁铁路局柳州供电段 | Dynamic safety belt tensile test stand |
| CN104833503A (en) * | 2015-05-20 | 2015-08-12 | 山东省农业机械科学研究院 | Smoke machine strap bearing capacity testing device and testing method |
| CN106769440A (en) * | 2016-11-14 | 2017-05-31 | 宜兴华威封头有限公司 | A kind of processing method of strain hardening tensile sample |
-
2013
- 2013-07-01 CN CN201320384493.4U patent/CN203414343U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411829A (en) * | 2013-07-01 | 2013-11-27 | 南宁铁路局柳州供电段 | Dynamic safety belt tensile test stand |
| CN103411829B (en) * | 2013-07-01 | 2015-07-01 | 南宁铁路局柳州供电段 | Dynamic safety belt tensile test stand |
| CN104833503A (en) * | 2015-05-20 | 2015-08-12 | 山东省农业机械科学研究院 | Smoke machine strap bearing capacity testing device and testing method |
| CN104833503B (en) * | 2015-05-20 | 2016-04-06 | 山东省农业机械科学研究院 | Fog machine braces bearing test device and test method |
| CN106769440A (en) * | 2016-11-14 | 2017-05-31 | 宜兴华威封头有限公司 | A kind of processing method of strain hardening tensile sample |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20150701 |
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| EXPY | Termination of patent right or utility model |