CN2031913U - Electronic measuring apparatus for railroad gauge level - Google Patents
Electronic measuring apparatus for railroad gauge level Download PDFInfo
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- CN2031913U CN2031913U CN 88209137 CN88209137U CN2031913U CN 2031913 U CN2031913 U CN 2031913U CN 88209137 CN88209137 CN 88209137 CN 88209137 U CN88209137 U CN 88209137U CN 2031913 U CN2031913 U CN 2031913U
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- elastic force
- gauge
- horizontal
- crossbeam
- railroad
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Abstract
The utility model relates to an electronic measuring apparatus for railroad gauge level, which is especially applied to traveling on a railway rail, at the same time digital display out the distance of automatic measuring and horizontal altitude difference between two railways. The measuring apparatus adopt elasticity sealing distance measuring equipment, horizon sensor, digital display alarm electrical chamber and quick run off rails apparatus. The utility model has the advantages of high precision, quick speed of testing, convenience and flexible operation, small size, light weight and low cost. The measuring apparatus provides an easy popularization and use electronic measuring apparatus for periodically and from time to time overhauling railways.
Description
The present invention is the horizontal electronic gauge of a kind of railroad gauge, particularly relate to a kind of be applicable on rail, advance in, measure automatically, show rail spacing from and the measurement display device of two rail difference in level.
At present, track forces commonly used is measured gauge and rail level in the inspection work of railway road.For example Chinese patent 85201947 has proposed a kind of " automatic measuring superelevation gauge " of being made up of graduated scale and air level, this track forces requires operating personnel's pointwise body in the wrong that it is placed on the rail, read rail gauge value by the scale of scale, and measure the level height difference of railway track by air level, because this track forces is a kind of manual survey measurements device, so it has, and measuring accuracy is low, labour intensity is big and ineffective shortcoming.
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of precision height is proposed, detection speed is fast, labour intensity is low and the automatic measurement that is easy to promote the use of and show rail spacing from and the surveying instrument of rail difference in level.
The technical solution of the utility model is by adopting: elastic force sealing distance measuring equipment, horizon sensor, digital display warning electronic box, power supply, stiff end, crossbeam and the device that derails fast.Its principle of work as shown in Figure 1.Elastic force blind end in stiff end and the elastic force sealing distance measuring equipment links up to form by crossbeam measures car body, the upper end of crossbeam is fixedly mounting horizon sensor, the lower end is installed with elastic force sealing distance measuring equipment, and this distance measuring equipment comprises the single point supporting end, elastic force blind end and displacement transducer.Horizon sensor shows that with displacement transducer and digital display the warning electronic box links to each other, and the power of this electronic box is provided by power supply.The derailing device is positioned at the central authorities of crossbeam and links to each other with the elastic force blind end fast.During measurement, this measuring instrument mentioned by quick derailing device place on the rail, when on rail, advancing, the elastic force blind end does not wait and move left and right with the rail spacing, this just makes displacement transducer produce an electric signal that changes with gauge, and process digital display warning electronic box demonstrates the difference with standard gauge.When rail occurred level difference in height, horizon sensor produces a corresponding electric signal, and this signal demonstrates the difference in level actual value through digital display warning electronic box.This measuring instrument is provided with warning device, if it is overproof that the gauge level takes place, can send the sound of ringing at any time.When the needs deorbit, as long as, this measuring instrument is de-orbited fast in 3 seconds by the device that derails fast.For making safe operation process reliable, this measuring instrument also is equipped with seal.
The utility model has been realized the automatic measurement and the demonstration of gauge and level, and particularly it can directly be measured in implementation, show continuously, thereby has alleviated labor intensity of operating staff greatly, has improved measuring accuracy and work efficiency.This measuring instrument can be with fashionable dress rail and derailing, so it has flexible to operation, fireballing characteristics of rail up and down.This measuring instrument also has advantages such as volume is little, in light weight, cheap.This measuring instrument overhauls railway at any time for regularly reaching, and guarantees that the railway security transportation provides a kind of detecting instrument that is easy to promote the use of.
Below be description of drawings of the present utility model:
The horizontal electronic gauge fundamental diagram of Fig. 1 railroad gauge.
A kind of embodiment overall pattern of the horizontal electronic gauge of Fig. 2 railroad gauge.
Fig. 3 elastic force sealing distance measuring equipment and single point supporting end structure figure.
Fig. 4 horizon sensor structural drawing.
Fig. 5 differential transformer coil winding synoptic diagram.
Fig. 6 vibration, rectification circuit figure.
Fig. 7 precision bearing system structural drawing.
Fig. 8 finds range and amplifies warning circuit figure.
Fig. 9 level is amplified warning circuit figure.
Figure 10 structure drawing of device that derails fast.
Below in conjunction with embodiment the utility model is described in detail:
Present embodiment as shown in Figure 2, it by rail (1), horizontal roller frame (2), horizontal roller to (3), side direction pair of rollers (4), side direction turning rolls (5), digital display warning electronic box (6), pushing hands (7), derail device (8), horizon sensor (9), power supply (10), single point supporting end (11), elastic force blind end (12), displacement transducer (13) and crossbeam (14) formed fast.Wherein horizontal roller frame (2), side direction turning rolls (5), single point supporting end (11) and crossbeam (14) are formed car body, and this car body adopts aluminum alloy materials.Horizontal roller frame (2) and side direction turning rolls (5) are installed with horizontal roller respectively to (3) and side direction pair of rollers (4), they form stiff end, and the horizontal roller frame (2) of stiff end and side direction turning rolls (5) connect and compose a tee T vehicle frame with crossbeam (14) through riveted joint and screw.The horizontal location of this measuring instrument on railway by horizontal roller to (17) three triangular in shape being supported on the rail (1) of the roller in (3) and the single point supporting end (11).Lateral register is triangular in shape by (18) three of the elastic force disk wheels in side direction pair of rollers (5) and the elastic force blind end (12), is positioned between two rails (1) by elastic force is self-enclosed.Because the confining force that elastic force disk wheel (18) is produced is by the mid point of side direction pair of rollers (5) two-wheeled line.What therefore, this measuring instrument can be stable is positioned between the rail (1).Displacement transducer (13) is installed on crossbeam (14) lower end, and link to each other with elastic force blind end (12), single point supporting end (11) is installed in crossbeam (14) right-hand member, horizon sensor (9) is fixedly mounted on middle part, crossbeam (14) top, it can roll over dress and by screw retention on crossbeam (14).Digital display warning electronic box (6) also fixedly is housed and the device (8) that derails fast on the crossbeam (14), this device is positioned at the center of gravity position of car body.Pushing hands (7) can be transferred at any time and lift down and insertion installs.
Single point supporting end (11), elastic force blind end (12) and displacement transducer (13) are formed elastic force sealing distance measuring equipment, and its structure as shown in Figure 3.Single point supporting end (11) is made up of insulating mat (15), turning rolls (16) and roller (17), and roller (17) is riveted on the crossbeam (14) by turning rolls (16) and insulating mat (15).Elastic force blind end (12) is made up of elastic force disk wheel (18), elastic force sealing wheel carrier (19), insulating mat (20), connecting block (21), slide bar (22), spring (23), slide (24) and linkage frame (25).Displacement transducer is contained in the crossbeam lower end, at its two ends concentric hole is arranged, pass slide bar (22) in the hole, the thin end of slide bar (22) between slide bar (22) butt end and slide (24) is equipped with spring (23), the termination of slide bar (22) is fixed with connecting block (21), connecting block (21) and insulating mat (20), elastic force sealing wheel carrier (19) is fixedly connected, at elastic force sealing wheel carrier (19) internal fixation elastic force disk wheel (18) is arranged, linkage frame (25) is fixed on crossbeam (14) lower end to displacement transducer (13), its gauge head and slide bar (22) join, and displacement transducer (13) adopts the back springing type sensor.
In addition, be equipped with the insulation assembly of forming by insulating mat (15), (20) on horizontal roller frame (2) and the side direction turning rolls (5).
The concrete structure of horizon sensor (9) as shown in Figure 4, this sensor is made up of differential transformer and vibration, rectification circuit, precision bearing system (53), pendulum system and damping system.Differential transformer comprises primary coil (31), secondary coil (27) and silicon steel sheet group (52).Silicon steel sheet group (52) is made up of mountain sections core and I sections core, coil winding as shown in Figure 5, primary coil (31) in the middle of iron core, secondary coil (27) and each two of coils of zeroing, they are respectively on the iron core on sections core both sides, mountain, iron core of the right and left and I sections core leave a gap, pendulum leaf (28) can be swung in the centre, and must not contact.Vibrate rectification circuit as shown in Figure 7, and wherein oscillatory circuit is by triode (BG
1) (BG
2), diode (D
1) (D
2), resistance (R
1) (R
2) and electric capacity (C) composition, its output terminal (A-A) links to each other with primary coil (31).Rectification circuit is by diode-bridge circuit (D
3) (D
4), resistance (R
5-R
7) form, the output terminal (B-B) of secondary coil (27), (B '-B ') respectively with two diode bridge rectifier circuit (D
3) (D
4) connect.Precision bearing system (53) concrete structure as shown in Figure 7, it is made up of little bearing (36), hold-doun nut (37), hold-down nut (38), bearing seat (39), screw (40), accurate little axle (41) and fixed head (42).Little bearing (36) is contained in the bearing seat (39), on bearing seat (39), be fixed with pendulum (32), endoporus at little bearing (36) penetrates an accurate closely little axle of cooperation (41), this little axle (41) is fixed on the fixed head (42) by screw (40), and fixed head (42) is fixedlyed connected with differential transformer.The pendulum system is made up of pendulum (32), horizontal piece (33), pendulum leaf support (54), pendulum leaf (28) and weight (34).Horizontal piece (33) one ends are connected with pendulum (32), and the other end is fixedlyed connected with pendulum leaf support (54), and pendulum leaf support (54) pendulum leaf (28) by screw retention, and pendulum leaf (28) is in the gap of mountain sections core and I sections core.The plane of symmetry of pendulum leaf (28), pendulum leaf support (54), horizontal piece (33), precision bearing system (53) has identical structure.Fixedly mounting weight (34) in horizontal piece (33) lower end, weight (34) is the damping tube (34) in the damping system just.Damping system is made up of damping tube (34) partition (35), piston (30) and piston holder (29).In the middle of the damping tube (34) partition (35) is arranged, it is divided into two air chambers, two pistons (30) are installed in the damping tube (34), and maintain certain interval with barrel, and they are connected by two-piston support (29) and differential transformer.The horizon sensor (9) that each part mentioned above is formed is fixedly connected by differential transformer and housing (26), and is encapsulated in the housing.
Comprise in the digital display warning electronic box (6) that warning circuit is amplified in range finding and level is amplified warning circuit, they are respectively as Fig. 8 and shown in Figure 9.Range finding is amplified warning circuit and is made up of operational amplification circuit, overproof warning circuit and liquid crystal display circuit.Electric signal by displacement transducer (13) output is given by resistance (R
11-R
13) and operational amplifier (IC
11) amplifying circuit formed amplifies.Then one the tunnel give by resistance (R
9-R
11), electric capacity (C
1) and the display circuit formed of LCD (ID).Another road is through switch (K
11) give operational amplifier (IC
21-IC
24) warning circuit formed, operational amplifier (IC
21-IC
22) form signal selection comparator circuit, through K
2Be divided into two grades, (+6 ,-2 or+6 ,-4).Oscillatory circuit (IC
23) produce oscillator signal loudspeaker are rung, operational amplifier (IC
24) be comparison signal further to be amplified the warning volume is increased.Resistance (R
14-R
18) the composition zeroing circuit, resistance (R
9-R
11) composition enlargement factor adjustment circuit.Amplify warning circuit by the electric signal level of giving that the output terminal of horizon sensor (9) is exported.The composition of this circuit is basic identical with range finding amplification warning circuit, just at operational amplifier (IC
12) back is through switch (K
12) after increased the one-level computing and amplified, compare warning again after signal is increased.
Device (8) concrete structure derail fast as shown in figure 10, and it is made up of fixed handle (43), sliding handle (44), pull bar (45), adjustable swivel nut (46), adjusting screw (47), wire rope (48), mistake pulley (49), pulley (50) and pulley bracket (51).Fixed handle (43) is positioned at the centre of gravity place of this measuring instrument, and it is installed in the upper end of crossbeam (14).Sliding handle (44) is housed in fixed handle (43), and it can slide up and down in fixed handle.Welding wire rope (48) in sliding handle (44) lower end, wire rope (48) is fixedly connected with adjusting screw (47) through pulley (50), mistake pulley (49) by the hole on the crossbeam (14).Be screwed with adjustable swivel nut (46) on the adjusting screw (47), can make length and regulate, adjustable swivel nut (46) right side is screwed with pull bar (45), also can make length and regulate.Pull bar (45) is connected on the connecting block (21) of elastic force potted ends (12), and pushing hands (7) is installed on the crossbeam (14).
In addition, car body of the present utility model can also can adopt similar nonmetallic materials wooden, plastics according to different measuring accuracy requirements except that adopting aluminum alloy materials, and various metal and alloy material.Also can adopt floating type displacement transducer the back springing type displacement transducer that in the present embodiment, adopts, but its side head and elastic force sealing slide bar will be linked together reliably.The level height difference measurements can also adopt gyroscope, inductance level instrument, liquid pendulum and flexible pendulum.The used horizon sensor of the utility model (9) also can be used for other horizontal survey, and for example: the artilleryman measures with the vertical relative to the earth automatic control of radar main shaft in the radar truck.
The utility model can also be used to measure broad gauge and narrow gauge by changing vehicle body length except that rail gauge that is applicable to standard gauge and horizontal survey, as: rocket gun emission rail and mine narrow gauge.
The course of work of the present utility model is: at first grasp the fixed handle (43) of quick derailing device (8), refer to mention sliding handle (44) with four.By the wire rope (48) that is connected, act on the connecting block (21) through pulley (50) and mistake pulley (49) pulling pull bar (45), thereby drive elastic force sealing wheel carrier (19), elastic force disk wheel (18) moves inward, and so just can be put in this measuring instrument on the rail.Pushing hands (7) and horizon sensor (9) are installed then, are connected the power switch of opening digital display warning electronic box (6) behind the plug, carry out the horizontal zero adjustment earlier, then hold pushing hands (7) this measuring instrument is walked in orbit.When gauge changes, under the effect of spring (23), elastic force disk wheel (18) and wheel carrier (19) move left and right thereof, by connecting block (21) and slide bar (22), compression or stretching displacement sensor (13) are corresponding to be moved, thereby produce an electric signal, amplify, demonstrate difference with standard gauge through digital display warning electronic box (6).If it is overproof that gauge takes place, the warning circuit in the digital display warning electronic box (6) is in running order, can send the sound of ringing at any time.When track occurred level difference in height, horizon sensor (9) tilts with this measuring instrument, but because the effect of precision bearing system (53), makes whole pendulum system remain vertical, because the air damping effect of twin-tub damping system, make that pendulum is static rapidly to get off.Variation has taken place in original so relatively pendulum position, thereby make two positions of pendulum leaf (28) in differential transformer magnetic field that variation take place, when pendulum leaf (28) is swung in magnetic field, cut the magnetic line of force, make the magnetic flux in magnetic field, two ends that the opposite variation of equivalent take place, thereby cause an end magnetic flux to increase, other end magnetic flux reduces, the induction electromotive force that increases in the coil of holding at magnetic flux increases, reduce and the other end is corresponding, this electromotive force obtains a differential electrical signals through rectification, and this signal amplifies through the digital display electronic box (6) of reporting to the police, quantification also demonstrates the difference in level actual value.When needs make the deorbit of this measuring instrument, grasp the fixed handle (43) of quick derailing device (8) equally, refer to mention sliding handle (44) with four, by wire rope (48), act on connecting block (21) through pulley (50), mistake pulley (49) and pulling pull bar (45), elastic force seals wheel carrier (19), elastic force disk wheel (18) moves inward thereby drive, and just this measuring instrument can be mentioned, and de-orbits.
Claims (10)
1, the horizontal electronic gauge of a kind of railroad gauge, this measuring instrument comprises stiff end, crossbeam, movable end and seal; It is characterized in that having adopted elastic force sealing distance measuring equipment, horizon sensor, digital display warning electronic box, power supply and the device that derails fast.Elastic force blind end in stiff end and the elastic force sealing distance measuring equipment plays knot by crossbeam and gets up to form to measure car body, the crossbeam upper end is fixedly mounting horizon sensor, the lower end is installed with elastic force sealing distance measuring equipment, horizon sensor links to each other with digital display warning electronic box with the displacement transducer that elastic force seals in the distance measuring equipment, this electronic box links to each other with power supply, and the device that derails fast is positioned at crossbeam central authorities and links to each other with the elastic force blind end.
2, the horizontal electronic gauge of railroad gauge according to claim 1 is characterized in that elastic force seals distance measuring equipment and is made up of single point supporting end (11), elastic force blind end (12) and displacement transducer (13).Single point supporting end (11) is made up of insulating mat (15), turning rolls (16) and roller (17).Elastic force blind end (12) is made up of elastic force disk wheel (18), elastic force sealing wheel carrier (19), insulating mat (20), connecting block (21), slide bar (22), spring (23), slide (24) and linkage frame (25).Displacement transducer (13) adopts the back springing type sensor.Single point supporting end (11) is installed in the right-hand member of crossbeam (14), and displacement transducer (13) is installed in the lower end of crossbeam (14), and links with elastic force blind end (12).
3, the horizontal electronic gauge of railroad gauge according to claim 1 is characterized in that horizon sensor (9) is made up of differential transformer and vibration rectification circuit, precision bearing system, pendulum system and damping system.
4, according to claim 1 and the horizontal electronic gauge of 3 described railroad gauges, it is characterized in that differential transformer and vibration rectification circuit thereof.Differential transformer comprises the silicon steel sheet group (52) that primary coil (31), secondary coil (27) and mountain sections core and I sections core constitute.Primary coil (31) in the middle of iron core, secondary coil (27) and each two of coils of zeroing, they are respectively on the iron core on sections core both sides, mountain, iron core of the right and left and I sections core leave a gap, pendulum leaf (28) can be swung in the centre, and must not contact.The vibration rectification circuit is made up of oscillatory circuit and rectification circuit, and the output terminal of oscillatory circuit (A-A) links to each other with primary coil (31), the output terminal (B-B) of secondary coil (27), (B '-B ') respectively with two diode bridge rectifier circuit (D
3) (D
4) link to each other.
5, according to claim 1 and the horizontal electronic gauge of 3 described railroad gauges, it is characterized in that precision bearing system (53) is made up of little bearing (36), hold-doun nut (37), hold-down nut (38), bearing seat (39), screw (40), accurate little axle (41) and fixed head (42).Little bearing (36) is contained in the bearing seat (39), on bearing seat (39), be fixed with pendulum (32), endoporus at little bearing (36) penetrates an accurate closely little axle of cooperation (41), this little axle (41) is fixed on the fixed head (42) by screw (40), and fixed head (42) is fixedlyed connected with differential transformer.
6,, it is characterized in that the pendulum system is made up of pendulum (32), horizontal piece (33), pendulum leaf support (54), pendulum leaf (28) and weight (34) according to claim 1 and the horizontal electronic gauge of 3 described railroad gauges.Horizontal piece (33) one ends are connected with pendulum (32), and the other end is fixedlyed connected with pendulum leaf support (54), and pendulum leaf support (54) pendulum leaf (28) by screw retention, and pendulum leaf (28) is in the gap of mountain sections core and I sections core.
7, according to claim 1 and the horizontal electronic gauge of 3 described railroad gauges, it is characterized in that damping system is made up of damping tube (34), partition (35), piston (30) and piston holder (29), one partition (35) is arranged in the middle of the damping tube (34), it is divided into two air chambers, two pistons (30) are installed in the damping tube (34), and maintaining certain interval with barrel, they are connected by two-piston support (29) and differential transformer.
8, the horizontal electronic gauge of railroad gauge according to claim 1, it is characterized in that stiff end is made up of (3), side direction turning rolls (5) and side direction pair of rollers (4) horizontal roller frame (2), horizontal roller, horizontal roller is installed in respectively on horizontal roller frame (2) and the side direction wheel carrier (5) (3) and side direction pair of rollers (4).
9, the horizontal electronic gauge of railroad gauge according to claim 1, it is characterized in that having adopted in the digital display warning electronic box (6) range finding to amplify warning circuit and level amplification warning circuit, range finding is amplified warning circuit and is linked to each other with displacement transducer (13), and level is amplified warning circuit and linked to each other with horizon sensor (9).
10, the horizontal electronic gauge of railroad gauge according to claim 1, it is characterized in that the device that derails fast (8) is made up of fixed handle (43), sliding handle (44), pull bar (45), adjustable swivel nut (46), adjusting screw (47), wire rope (48), mistake pulley (49), pulley (50) and pulley bracket (51).Fixed handle (43) is installed in the upper end of crossbeam (14), sliding handle (44) is contained in the fixed handle (43), wire rope (48) is fixedly connected with adjusting screw (47) through pulley (50), mistake pulley (49) by the hole on the crossbeam (14).Be screwed with adjustable swivel nut (46) on the adjusting screw (47), can make length and regulate, adjustable swivel nut (46) right side is screwed with pull bar (45), also can make length and regulate, pull bar (45) is connected on the connecting block (21) of elastic force blind end (12), and pushing hands (7) is installed on the crossbeam (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209137 CN2031913U (en) | 1988-08-05 | 1988-08-05 | Electronic measuring apparatus for railroad gauge level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88209137 CN2031913U (en) | 1988-08-05 | 1988-08-05 | Electronic measuring apparatus for railroad gauge level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031913U true CN2031913U (en) | 1989-02-01 |
Family
ID=4842832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88209137 Withdrawn CN2031913U (en) | 1988-08-05 | 1988-08-05 | Electronic measuring apparatus for railroad gauge level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031913U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295110C (en) * | 2002-01-25 | 2007-01-17 | 赵建勇 | Electronic track gauge |
| CN105043273A (en) * | 2015-08-28 | 2015-11-11 | 南京南车浦镇城轨车辆有限责任公司 | Adjustable laser measuring device for height from rail vehicle chassis equipment to rail surface |
| TWI557394B (en) * | 2015-04-01 | 2016-11-11 | de-qin Zhang | Straightforward leveling rules |
| CN106152915A (en) * | 2016-08-25 | 2016-11-23 | 上海市安装工程集团有限公司 | A kind of F rail rail gauge measuring apparatus and measuring method |
| CN108072852A (en) * | 2016-11-11 | 2018-05-25 | 京瓷办公信息***株式会社 | Differential transformer type magnetic permeability sensor |
| CN108534750A (en) * | 2018-05-17 | 2018-09-14 | 林再颐 | Architecture storey elevation detector |
| CN110196033A (en) * | 2019-06-21 | 2019-09-03 | 中国神华能源股份有限公司 | Dynamic calibration apparatus and system |
| CN112485790A (en) * | 2020-11-23 | 2021-03-12 | 湖南中大检测技术集团有限公司 | K-waveband radar-based track non-contact deformation high-precision measurement method |
| CN117067583A (en) * | 2023-10-16 | 2023-11-17 | 合肥速铸智能科技有限公司 | Accurate levelling device of 3D printing equipment and 3D printing equipment |
-
1988
- 1988-08-05 CN CN 88209137 patent/CN2031913U/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295110C (en) * | 2002-01-25 | 2007-01-17 | 赵建勇 | Electronic track gauge |
| TWI557394B (en) * | 2015-04-01 | 2016-11-11 | de-qin Zhang | Straightforward leveling rules |
| CN105043273A (en) * | 2015-08-28 | 2015-11-11 | 南京南车浦镇城轨车辆有限责任公司 | Adjustable laser measuring device for height from rail vehicle chassis equipment to rail surface |
| CN106152915A (en) * | 2016-08-25 | 2016-11-23 | 上海市安装工程集团有限公司 | A kind of F rail rail gauge measuring apparatus and measuring method |
| CN108072852A (en) * | 2016-11-11 | 2018-05-25 | 京瓷办公信息***株式会社 | Differential transformer type magnetic permeability sensor |
| CN108534750A (en) * | 2018-05-17 | 2018-09-14 | 林再颐 | Architecture storey elevation detector |
| CN110196033A (en) * | 2019-06-21 | 2019-09-03 | 中国神华能源股份有限公司 | Dynamic calibration apparatus and system |
| CN112485790A (en) * | 2020-11-23 | 2021-03-12 | 湖南中大检测技术集团有限公司 | K-waveband radar-based track non-contact deformation high-precision measurement method |
| CN112485790B (en) * | 2020-11-23 | 2023-11-24 | 中大智能科技股份有限公司 | Track non-contact deformation high-precision measurement method based on K-band radar |
| CN117067583A (en) * | 2023-10-16 | 2023-11-17 | 合肥速铸智能科技有限公司 | Accurate levelling device of 3D printing equipment and 3D printing equipment |
| CN117067583B (en) * | 2023-10-16 | 2024-01-02 | 合肥速铸智能科技有限公司 | Accurate levelling device of 3D printing equipment and 3D printing equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |