CN202267467U - Digital display type platform limit measuring scale - Google Patents
Digital display type platform limit measuring scale Download PDFInfo
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- CN202267467U CN202267467U CN2011203900140U CN201120390014U CN202267467U CN 202267467 U CN202267467 U CN 202267467U CN 2011203900140 U CN2011203900140 U CN 2011203900140U CN 201120390014 U CN201120390014 U CN 201120390014U CN 202267467 U CN202267467 U CN 202267467U
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Abstract
The utility model relates to a digital display type platform limit measuring scale with high precision; the measuring scale comprises a scale body and a measurer; the measurer is installed above the scale body; the measuring scale is characterized by further comprising an electronic display and a sensor; the scale body is of a stretchable hollow cavity body structure; the scale body is composed of a set of a main scale and an auxiliary scale, wherein the main scale and the auxiliary scale are glidingly connected in a matched manner through a linear guide rail fixed on the outer wall of the auxiliary scale and a nylon guide strip on the inner wall of the main scale; the relative displacement between the two scales can be precisely adjusted through a gear rack fixed outside the auxiliary scale and a gear mechanism on the main scale; the sensor is fixedly installed in a hollow cavity body; and the electronic display is fixedly installed on the scale body. The digital display type platform limit measuring scale disclosed by the utility model has the advantages of being concise and attractive in structure, simple and convenient for operation, clear for display, convenient for carrying, high in operation efficiency, good in protection and accurate and reliable in measurement precision.
Description
Technical field
The utility model belongs to railway station platform gauge measurement mechanism, is meant a kind of platform gauge dip stick of high precision digital display type especially.
Background technology
Platform is as stop place of train; Promptly to make things convenient for about the passenger and the loading and unloading of goods; Definitely can not invade structure clearance again, regulation among " Shanghai Railway Bureau's gauge management method " (technological regulations numbering SHG/ZS101-2009), each equipment control unit (co-partnership company) should be by " skill rule ", " professional etiquette " and each professional system administrative provisions; All kinds of rail track gauges are carried out one time repetition measurement in per 5 years, carry out an emphasis inspection every year.Regulation in " Shanghai Railway Bureau's operation building construction management method " (going up the iron room sends out [2003] No. 151); Be commissioned maintenance management unit every year when organizing the spring (autumn) season thorough examination, by the regulation of " skill rule ", " professional etiquette " all room construction be equipped with track clearance and carry out once comprehensive repetition measurement.
At present, platform gauge measurement mechanism still rests on and uses on the level that traditional scale class mechanical type measures, and defective such as because of measurement procedure is complicated, operating efficiency is low, and artificial measuring error is big, can not satisfy existing measurement demand.
At present, the gauge of platform is measured the aluminium matter vernier graduation chi that the dip stick that uses mainly contains wooden rule of zigzag and L shaped structure, and two kinds of dip sticks all adopt scale reading, and indicating value is not directly perceived.Z letterwood matter rule adopts the measurement pattern of taking double track, is difficult to guarantee the vertical survey structure of self, can not guarantee the vertical survey attitude of blade and circuit; Rustic, volume is big, is not easy to carry; And operate not convenient, the cooperation personnel are many, artificial measuring error is big.The aluminium matter vernier graduation chi of L shaped structure adopts the measurement pattern of taking inboard single track, and horizon bar chi adjustment horizontal process is more loaded down with trivial details, complicated operation, and the cooperation personnel are many, and can not guarantee the vertical of self two sounding rod chi equally, and measuring error is bigger.
Summary of the invention
The purpose of the utility model is the weak point according to above-mentioned prior art, and a kind of digital display type platform gauge dip stick is provided, and adopts two sections scalable aluminium alloy rod chi structures, and electronic display unit is fixedly installed on the crossbeam, adds the protecting sheathing encapsulation.Electronic measuring device adopts high-precision sensor to carry out signals collecting, and in signal processing, carries out temperature compensation and multiple interference protection measure, makes platform gauge dip stick structure lightly firm, makes things convenient for reading, and precision is high, good protective.
The purpose of the utility model realizes being accomplished by following technical scheme: a kind of digital display type platform gauge dip stick; Comprise blade; It is characterized in that: described dip stick also comprises electronic console and sensor; Said blade is an extension type hollow cavity structure, and this structure blade is made up of main scale and secondary chi suit, and wherein line slideway and the nylon gib block of main scale inwall of the connection between the two through being fixed in secondary chi outer wall comes sliding connection; It is inner that said sensor is fixedly mounted on said hollow cavity, and said electronic console is fixedly mounted on the said blade.
Described sensor is made up of level inclination sensor and magnetic grid displacement transducer; Wherein the magnetic grid displacement transducer is made up of magnetic grid read head and magnetic grid bar; The tiling of magnetic grid bar is fixed on the main scale cavity inner surface; The magnetic grid read head is fixed on secondary chi outside surface, and the magnetic grid read head places within the action of a magnetic field scope of magnetic grid bar, and said level inclination sensor is fixed in the inside cavity of secondary chi.
Described electronic console comprises OLED display screen, film key panel, electronics storehouse box; Wherein said OLED display screen and film key panel are fixed on electronics storehouse box inside surface; Said electronics storehouse box is sleeved on the secondary chi; Be provided with a single-chip microcomputer electronic circuit board in the box of said storehouse, said single-chip microcomputer electronic circuit board connects sensor and electronic console.
Described blade is provided with L shaped hinge chi and profiling bearing, and wherein said L type hinge chi is hinged on secondary chi surface, and said profiling bearing is articulated on the main scale.
Described blade is provided with micromatic setting; Said micromatic setting is made up of fine setting tooth bar, fine setting gear, trimming hand wheel, roller, air level; Wherein finely tune tooth bar and be fixed on said secondary ulnar surface, said trimming hand wheel is fixed on the side of main scale, and said fine setting tooth bar is connected with the fine setting gearing mesh; Said trimming hand wheel is fixedly connected the fine setting gear, and said roller and air level are fixed on the said L type hinge chi.
The two ends of said main scale are separately installed with the end cover.
The line slideway of said secondary chi outer wall and nylon gib block junction are provided with slide block, and said slide block and line slideway are slidingly connected.
Described blade is provided with one handle.
Described blade is provided with a bearing.
The utility model has the advantages that: adopt stretching structure, simple in structure, convenient for collecting and transportation; Measurement is benchmark with the level, and data general-purpose property is good; Telescoping mechanism adopts line slideway, and guidance quality is good; Adopt high-precision tilt angle sensor measurement pitch angle, need not carry out horizontal adjustment; And adopt magnetic locating piece location, easy and simple to handle, but the one man operation; Adopt OLED to show that indicating value is clear and intuitive.
Description of drawings
Fig. 1 is the utility model front view;
Fig. 2 is the utility model vertical view;
Fig. 3 is the cut-open view of the utility model A-A;
Fig. 4 is an electronic console numeral displayed map;
Fig. 5 is the electronic console fundamental diagram;
Fig. 6 is a L type hinge chi structural representation;
Fig. 7 is a line slideway junction structural representation;
Fig. 8 is the utility model measure attitude synoptic diagram;
Fig. 9 is the utility model measuring principle synoptic diagram;
Figure 10 is the utility model magnetic grid displacement transducer index request;
Figure 11 is the utility model level inclination sensor index request;
Figure 12 is the accuracy requirement of the utility model;
Figure 13 is the utility model micro-adjusting mechanism structural drawing.
Embodiment
Through instance the utility model characteristic and other correlated characteristic are done further explain below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
What label was represented respectively among the accompanying drawing 1-13 is OLED display screen 1; Film key panel 2; Electronics storehouse box 3; Secondary chi 4; Line slideway 5; Fine setting tooth bar 6; End cover 7; Trimming hand wheel 8; Handle 9; Main scale 10; Bearing rotating shaft 11; Profiling bearing 12; T shape bearing 13; L shaped hinge chi 14; Air level 15; Level inclination sensor 16; End cover 17; Magnetic grid read head 18; Magnetic grid bar 19; Magnetic grid displacement transducer 20; Electronic console 21; Roller 22; Slide block 23; Nylon gib block 24; Platform 25; Inner track 26; Fine setting gear 27.
Embodiment: like Fig. 1,2, shown in 3; Secondary chi 4 is formed extension type hollow cavity structure blade with main scale 10; Line slideway and nylon gib block 24 sliding connections of main scale 10 inwalls of connection between wherein secondary chi 4 and the main scale 10 through being fixed in secondary chi 4 outer walls, the section of beam of said main scale 10 and secondary chi 4 is a rectangular configuration.Be provided with magnetic grid displacement transducer 20 in main scale 10 cavitys; Magnetic grid displacement transducer 20 is made up of magnetic grid read head 18 and magnetic grid bar 19; Magnetic grid read head 18 is fixed on the blade outside surface that secondary chi 4 stretches into main scale 10 inside cavity; Magnetic grid bar 19 is fixed on main scale 10 cavity inner surfaces, and magnetic grid read head 18 is arranged in the action of a magnetic field scope of magnetic grid bar 19 tops.Electronic console 21 is made up of OLED display screen 1, film key panel 2, electronics storehouse box 3, and wherein OLED display screen 1 is fixed on electronics storehouse box 3 inside surfaces with film key panel 2, and electronics storehouse box 3 is sleeved on an end of secondary chi 4.Secondary chi 4 inside cavity are fixed with a level inclination sensor 16.L type hinge chi 14 and bubble 15 are hinged on the lower surface of electronics storehouse box 3.One end of main scale 10 blades is set with end cover 17, and profiling bearing 12 is hinged with end cover 17 through bearing rotating shaft 11.Secondary chi 4 also is provided with one by finely tuning the micromatic setting that tooth bar 6, trimming hand wheel 8 and fine setting gear 27 are formed with the junction of main scale 10; Fine setting tooth bar 6 is fixed on the side of secondary chi 4; Trimming hand wheel 8 is fixed on the side of main scale 10; Fine setting tooth bar 6 is connected with a joggle with fine setting gear 27, and gears 27 are finely tuned in trimming hand wheel 8 fixed connections, and trimming hand wheel 8 can be controlled fine setting tooth bar 6 through the fine setting gear 27 that connects makes secondary chi 4 do to finely tune mobile in the inside cavity of main scale 10.End cover 7 is sleeved on the main scale 10.Secondary chi 4 surfaces also are fixed with a T shape bearing 13.Main scale 10 upper surfaces are fixed with one handle 9.L type hinge chi 14 heads as shown in Figure 6 are fixed with roller 22.Line slideway as shown in Figure 7 and nylon gib block 24 grooves are slidingly connected, and also are provided with the slide block 23 that is used to lead in the junction, and orienting lug 23 is slidingly connected with direct guide rail 5.
When the utility model uses; As shown in Figure 8; At first the L type hinge chis 14 with said secondary chi 4 surfaces are fixedly supported on the platform floor 25, and the main scale that then stretches 10 blades also are fixedly supported to the profiling bearing 12 of main scale 10 1 ends on the inner track 26, regulate trimming hand wheel 8 then; The single-chip microcomputer electronic circuit board emits the side to arrive the horizontal transfer of orbit centre according to the plummet height and the platform of the relative rail level of data computation platform upper surface of sensor, on electronic console 21, carries out reading at last.
Present embodiment is the horizontal cross distance that is used to measure railroad platform side and adjacent tracks center line; And the special-purpose digital display type mechano-electronic measurement instrument of railroad platform surface and contiguous rail plummet height; Its sound construction is light and handy, and simple operation is efficient, and convenient for collecting and transportation.In this example; Combine singlechip technology, sensing technology, signal processing technology etc. during design; Adopt high precision magnetic grid displacement transducer 20 and level inclination sensor 16; Gather signals such as bar chi length and bar chi angle of inclination, and the conversion through process software, utilize triangle calculating principle indirect calculation to go out the lateral separation between platform and the two strands of rail center lines; And the vertical height of the platform floor and the platform one side rail surface that pulls in carries out numeral through electronic console 21 and shows, and electronic console 21 possesses additional functions such as electric weight demonstration, overload alarm.
Measuring principle according to this dip stick can know that direct measured value of dip stick and our required treating will calculate through funtcional relationship between the measured value.It is as shown in Figure 9 that how much states that blade, tested platform and rail constitute when measuring operation are depicted as how much sketches, can be known by figure, directly measured value (L, α) and treat that the funtcional relationship between measured value f (h), the f (w) is following:
The direct measured value of the direct measured value α=angle of L=length
e=38.52mm b=21.21mm
Owing to directly have error in the measured value, therefore value function f to be measured (h) and f (w) also must be affected and produce error.Can know according to the propagation of error law, establish platform and rail level and treat highly that vertically the measured value error is m
h, directly the error of measured value (L) is respectively m
lAnd m
α, then there is following funtcional relationship:
In the formula
;
is function f (h); F (w) is respectively to two variables L; The partial derivative of α.When finding the solution, the direct observed reading substitution of the some groups of limit partial derivative that possibly occur is obtained error in several, and one that gets maximum as the precision index in the platform chi gamut scope.Combine to know that the index request of magnetic grid displacement transducer and level inclination sensor is like Figure 10, shown in 11 after the measurement range calculating according to above-mentioned functional expression.
In this example, because the aluminium matter vernier graduation chi of the wooden rule of zigzag of current use and L shaped structure all is difficult to guarantee the vertical survey structure of self in measuring process, can not guarantee the vertical survey attitude of blade and circuit; Complicated operating process, artifical influence factor is bigger, in order to guarantee blade intensity; The blade crossbeam is selected 6063 aluminium alloy extrusions for use, and section of beam is rectangle, and this material density is little, from heavy and light; Intensity is higher, and performance attractive in appearance is good; In order to dwindle whole chi structure; Improve its practicality and portability; Measurement pattern and whole chi structure are carried out particular design, adopted single track to lean to measurement pattern, utilized magnetic profiling bearing 12 to guarantee and the location of rail and closely connected; Whole chi structure then adopts two sections extension type aluminium alloy rod chis; And between two bar chis, installed the flexible micro-adjusting mechanism of forming by fine setting tooth bar 6, fine setting gear 27, trimming hand wheel 8, roller 22 additional, and be fixedly installed in the horizontal attitude that the air level 15 on the L shaped hinge chi 14 is used to observe L shaped hinge chi, be convenient to the level of the L shaped hinge chi 14 of convenient adjustment when measuring.End cover 7 and end cover 17 are sleeved on the two ends of main scale 10, have limited the maximum slippage stroke of secondary chi 4, prevent that magnetic grid read head 18 from skidding off outside the cavity of main scale 10.
Present embodiment adopts because of lithium battery in the specific implementation.Because of lithium battery have capacious, memory-less effect, the overcarbonation ability is strong; Self-discharge rate is little, environmental protection is stable, characteristics such as cost performance height, therefore; Power supply is then selected for use because of lithium battery in present embodiment; And be equipped with one and do replacing because of lithium battery, the monolithic lithium battery is 1900mAh3.7V, to satisfy request for utilization.Displacement transducer adopts non-contact type high precision magnetic grid displacement transducer 20, linearity error≤0.06%, repeatable accuracy≤0.013%; This type displacement transducer external form is small and exquisite; Precision is high, and price is relatively cheap, and is affected by environment little; Range can be accomplished 30 meters, satisfies platform gauge dip stick measuring accuracy, range and display resolution requirement fully.Level inclination sensor 16 adopts import high-precision tilt angle sensor SCA103T, and this size sensor is little, precision is high, and shock resistance is good, and long-time stability are good, and temperature characterisitic is good, characteristics such as strong shock resistance.On 14 liang of surface of contact of the L shaped hinge chi of dip stick dismountable stainless steel substrates has been installed, has been improved wearing quality.
21 of the electronic consoles of gauging rule are directed against following measurement requirement and propose to improve:
Precision: the stability of AD sampling resolution and reference voltage is the principal element of decision sampling precision, and therefore, digital display device can adopt high-order high-precision AD sampling; And adopt high-precision voltage reference chip; Improve reference power supply stability, reduce temperature and float, in addition; Blade and angle are influenced by environmental temperature, should revise automatically measuring numerical value according to environment temperature.
High stability: in order to improve the sampling numerical stability; Can directly supply power to sensor by the voltage reference chip; Simultaneously; Multiple filter is carried out in obliquity sensor simulation output handle, and carry out the differential mode sampling, can be not influenced with the sampling numerical value that guarantees sensor because temperature, power supply ripple and input voltage change.
Energy-conservation: select the electronic chip of super low-power consumption on the hardware as far as possible for use, can adopt super low-power consumption MCU like single-chip microcomputer, system power dissipation is less than 60mA, and subsidiary functions such as employing optimizer and the automatic shutdown of interpolation reduce power consumption on the software.
Waterproof, firm in structure: because in the dip stick electronic console is arranged; Must carry out waterproofing design; And optimize machine is to improve the protection to digital display device; Therefore, the parts of dip stick connect and water-proofing treatment has all been done in encapsulation, so not only can waterproof but also can protect digital display device to be damaged by collision because of exposing.
Need under-30 ℃ of-60 ℃ of environment can operate as normal in view of the platform chi, and under night and high light clear reading, so digital display device selected OLED display screen 1 for use, resolving power 128*32, black matrix indigo plant word, display font is big.Simultaneously electronic display unit is comprised that display screen etc. is encapsulated in the protecting sheathing on the aluminium alloy crossbeam, so both solved waterproof problem, can protect electronic display unit to be damaged by collision again, vibration proof, good waterproof performance because of exposing.Concrete displaying contents and mode design as shown in Figure 4.Whole electronic console 21 principle of work are as shown in Figure 5; For guaranteeing the accuracy of AD sampling, adopted the high precision 24bitAD sampling A ads1222 of Ti, and the digital simulation part is used all independently-powered; Guarantee the stable of power supply, make the sampling numerical value can be not influenced because of change in voltage.In addition, adopt to strengthen interference protection measure, such as through technology such as digital filtering mode, SF setting and electronic circuit noise reduction process, prevent owing to face the difficulty of the measuring accuracy sum of errors reading that vibration causes such as car or construction cause.
According to the accuracy requirement to dip stick shown in Figure 12, the magnetic grid displacement transducer and the level inclination sensor type selecting of platform gauge dip stick are following:
Displacement transducer adopts non-contact type high precision magnetic induction sensor, linearity error≤0.06%, repeatable accuracy≤0.013%; This type displacement transducer external form is small and exquisite; Precision is high, and price is relatively cheap, and is affected by environment little; Range can be accomplished 30 meters, satisfies platform gauge dip stick measuring accuracy, range and display resolution requirement fully.Its performance is following:
Linearity: less than 0.06%
Repeatable accuracy: 0.013%
Range: 640mm
Serviceable life: greater than 107 times
Working temperature :-40 ℃～+ 125 ℃
The level inclination sensor adopts import high-precision tilt angle sensor SCA103T, and this sensor is that static accuracy is the highest in the world at present, and shock resistance is best; Obliquity sensor with the single crystal silicon material manufacturing; Long-time stability are good, and temperature characterisitic is good, characteristics such as strong shock resistance:
1) measurement range ± 15 degree;
2) 5VDC power supply, ratio-voltage output;
3) synthesis precision distinguishes that less than 0.02 ° of best result power is 0.004 °;
4) built-in temperature sensor;
5) long-time stability are very good;
6) low noise, operating temperature range is wide.
Claims (6)
1. digital display type platform gauge dip stick; Comprise blade; It is characterized in that: described dip stick also comprises electronic console and sensor; Said blade is an extension type hollow cavity structure, and this structure blade is made up of main scale and secondary chi suit, and wherein line slideway and the nylon gib block of main scale inwall of the connection between the two through being fixed in secondary chi outer wall comes sliding connection; It is inner that said sensor is fixedly mounted on said hollow cavity, and said electronic console is fixedly mounted on the said blade.
2. a kind of digital display type platform gauge dip stick according to claim 1; It is characterized in that: described sensor is made up of level inclination sensor and magnetic grid displacement transducer; Wherein the magnetic grid displacement transducer is made up of magnetic grid read head and magnetic grid bar, and the tiling of magnetic grid bar is fixed on the main scale cavity inner surface, and the magnetic grid read head is fixed on secondary chi outside surface; The magnetic grid read head places within the action of a magnetic field scope of magnetic grid bar, and said level inclination sensor is fixed in the inside cavity of secondary chi.
3. a kind of digital display type platform gauge dip stick according to claim 1; It is characterized in that: described electronic console comprises OLED display screen, film key panel, electronics storehouse box; Wherein said OLED display screen and film key panel are fixed on electronics storehouse box inside surface; Said electronics storehouse box is sleeved on the secondary chi, is provided with a single-chip microcomputer electronic circuit board in the box of said storehouse, and said single-chip microcomputer electronic circuit board connects sensor and electronic console.
4. a kind of digital display type platform gauge dip stick according to claim 1, it is characterized in that: described blade is provided with L shaped hinge chi and profiling bearing, and wherein said L type hinge chi is hinged on secondary chi surface, and said profiling bearing is articulated on the main scale.
5. a kind of digital display type platform gauge dip stick according to claim 1; It is characterized in that: described blade is provided with micromatic setting; Said micromatic setting is made up of fine setting tooth bar, fine setting gear, trimming hand wheel, roller, air level; Wherein finely tune tooth bar and be fixed on said secondary ulnar surface, said trimming hand wheel is fixed on the side of main scale, and said fine setting tooth bar is connected with the fine setting gearing mesh; Said trimming hand wheel is fixedly connected the fine setting gear, and said roller and air level are fixed on the said L type hinge chi.
6. a kind of digital display type platform gauge dip stick according to claim 1, it is characterized in that: the line slideway of said secondary chi outer wall and nylon gib block junction are provided with slide block, and said slide block and line slideway are slidingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203900140U CN202267467U (en) | 2011-10-14 | 2011-10-14 | Digital display type platform limit measuring scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203900140U CN202267467U (en) | 2011-10-14 | 2011-10-14 | Digital display type platform limit measuring scale |
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| CN202267467U true CN202267467U (en) | 2012-06-06 |
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| CN2011203900140U Expired - Lifetime CN202267467U (en) | 2011-10-14 | 2011-10-14 | Digital display type platform limit measuring scale |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168470A (en) * | 2016-08-25 | 2016-11-30 | 吴立滨 | A kind of station platform clearance survey device and method |
| CN106996727A (en) * | 2017-03-30 | 2017-08-01 | 华东交通大学 | A kind of special folding measuring scale of laser measurement platform dividing |
| CN107839384A (en) * | 2017-09-09 | 2018-03-27 | 深圳市赛亿科技开发有限公司 | A kind of ruler for drawing in high precision |
| CN109682291A (en) * | 2018-12-20 | 2019-04-26 | 柳州科路测量仪器有限责任公司 | Digital display gauging rule |
| CN110487150A (en) * | 2019-09-09 | 2019-11-22 | 泰宏建设发展有限公司 | Scaffold displacement measurement system and measurement method |
| CN111692976A (en) * | 2020-06-08 | 2020-09-22 | 中国科学院合肥物质科学研究院 | Digital display length reference device with temperature deformation self-compensation function |
| RU206117U1 (en) * | 2021-06-01 | 2021-08-24 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | ELECTRONIC MANUAL PLATFORM APPROXIMATE DIMENSION |
| RU220028U1 (en) * | 2023-04-03 | 2023-08-21 | Роман Владимирович Рябикин | RAILWAY DIMENSION METER |
-
2011
- 2011-10-14 CN CN2011203900140U patent/CN202267467U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168470A (en) * | 2016-08-25 | 2016-11-30 | 吴立滨 | A kind of station platform clearance survey device and method |
| CN106168470B (en) * | 2016-08-25 | 2018-08-31 | 吴立滨 | A kind of station platform clearance survey device and method |
| CN106996727A (en) * | 2017-03-30 | 2017-08-01 | 华东交通大学 | A kind of special folding measuring scale of laser measurement platform dividing |
| CN107839384A (en) * | 2017-09-09 | 2018-03-27 | 深圳市赛亿科技开发有限公司 | A kind of ruler for drawing in high precision |
| CN109682291A (en) * | 2018-12-20 | 2019-04-26 | 柳州科路测量仪器有限责任公司 | Digital display gauging rule |
| CN109682291B (en) * | 2018-12-20 | 2020-06-09 | 柳州科路测量仪器有限责任公司 | Digital display gauging rule |
| CN110487150A (en) * | 2019-09-09 | 2019-11-22 | 泰宏建设发展有限公司 | Scaffold displacement measurement system and measurement method |
| CN111692976A (en) * | 2020-06-08 | 2020-09-22 | 中国科学院合肥物质科学研究院 | Digital display length reference device with temperature deformation self-compensation function |
| CN111692976B (en) * | 2020-06-08 | 2022-09-09 | 中国科学院合肥物质科学研究院 | Digital display length reference device with temperature deformation self-compensation function |
| RU206117U1 (en) * | 2021-06-01 | 2021-08-24 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | ELECTRONIC MANUAL PLATFORM APPROXIMATE DIMENSION |
| RU220028U1 (en) * | 2023-04-03 | 2023-08-21 | Роман Владимирович Рябикин | RAILWAY DIMENSION METER |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 251 Tianmu East Road, Jingan District, Shanghai Patentee after: Institute of science and technology of China Railway Shanghai Bureau Group Co., Ltd. Address before: No. 251 Tianmu East Road, Zhabei District, Shanghai Patentee before: Science & Technology Inst., Shanghai Railway Bureau |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |