CN107941313A - A kind of rail vehicle electronic scale - Google Patents
A kind of rail vehicle electronic scale Download PDFInfo
- Publication number
- CN107941313A CN107941313A CN201711381917.0A CN201711381917A CN107941313A CN 107941313 A CN107941313 A CN 107941313A CN 201711381917 A CN201711381917 A CN 201711381917A CN 107941313 A CN107941313 A CN 107941313A
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- electronic scale
- valve
- barrel
- bronchus
- air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/04—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles
- G01G19/042—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles having electrical weight-sensitive devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vehicle Body Suspensions (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of rail vehicle electronic scale, belong to equalizer technology field.Safety barrel is equipped with the top of electronic scale, safety barrel is internally provided with tapered air spring, the medial gap cooperation of barrel outside and plunger barrel;The plunger barrel is cylindric tubular construction, and barrel inner side and safety barrel clearance fit, a side tube-wall are provided with straight slot, and top through hole and piston body are fixed, and plunger drum outer wall lower part is equipped with photosensitive switch;The rocker arm shaft of horn-like piston body connection levelling valve, nested with tapered air spring inside safety barrel, top is equipped with column cap;The air inlet of the tapered air spring is made of three gas circuits, and levelling valve, manual electromagnetic air valve are connected, and light-operated electromagnetic air valve, dedicated air valve are each to control a gas circuit.The safety barrel is a tubular structure, and top is provided with circular hole, and barrel is provided with straight slot.It is tiles structure at the top of the column cap, lower part cylinder and piston rod coordinate;Laser leveler and electronic scale display screen are respectively equipped with before and after electronic scale.
Description
Technical field
The invention belongs to equalizer technology field.
Background technology
Existing track scale is broadly divided into two kinds of static state railroad track scale and dynamic railway truck scale, and static state railroad track scale is mainly weighed static
The lorry of state.There is mechanical, 3 class of electric-mechanic control system formula and electronic type.Mechanical static state railroad track scale:During weighing, locomotive with less than
The speed of 3km/h accurately stops at lorry on bearing platform, and after unhook, the large and small sliding weight taken charge of on scale person's movable metering lever makes
Lever balance, is read by the sum of the indicating value of large and small sliding weight on major and minor lever and weighed.Shortcoming is complicated, efficiency is low, no
Train is advantageously mounted to come in and go out on frequent circuit.Electric-mechanic control system formula static state railroad track scale:Structural principle with it is mechanical identical.But passing
Power lever junction is equipped with a weighing sensor, and shows weighing automatically by weight display.Electronic type static state railroad track scale:By
Bearing platform, sensor, weighting display instrument and 4 part of digital printer composition.It can automatically show and weigh numerical value and print record.
There is teletransmission information, continuous metering.
Dynamic railway truck scale is mainly used for weighing the load truck in traveling.Two kinds of Organic Electricity convolution and electronic type.Metering
Mode has 3 kinds of vehicle metering, bogie weighing mode and Axle Measuring.Bearing platform has single table surface, dual stage face, three table tops etc..Electronic type is moved
When state track scale weighs, train, by bearing platform, automatic discrimination headstock and lorry, is held with the speed less than 15km/h using support
The sensor of weight platform, is converted into electric signal by truckload and amplifies through amplifier, then by converter transform into digital signal
Computer is inputted, a variety of data of truckload, and printable record can be shown after processing.
The Bell factory of ALSTOM companies of France is realized to car body secondary suspension by horizontal weighing unit and horizontal table
The tune of weighing of device carries.German AST companies have developed the rolling stock car lifting J-Horner system with measurement function using 25045 standards of DIN
System, the system can measure 4 car body balanced loads and displacement, determine the center of gravity and weight of vehicle, symmetrical vehicle is to rail
The pressure in road, realizes the high-speed cruising under car body tension-free state.Zhuzhou Electric Locomotive Co. Ltd., has introduced the equipment and has been used for
The tune of weighing of body for mass transit vehicles carries, the bogie test platform for coordinating Windhoff companies of Germany to develop, in two-part load
After the locality condition at distribution and each abutment reaches the requirement that vehicle wheel (axis) reassigns equilibrium, pass through simulation loading, maximum limit
The wheel (axis) that degree suppresses in vehicle operation shifts again.
Above-mentioned quiet, dynamic railway truck scale can only weigh lorry in orbit, it is necessary to rolling stock is assembled, and can run
In the case of weigh, it is impossible to the tune that carries out weighing without the bogie and car body that prepare is carried before not dispatching from the factory, can not be disappeared
Except wheel (axis) weight deviation.Above-mentioned existing both domestic and external weigh adjusts loading system all to there is tune load inaccuracy, deviation accumulation, efficiency
It is low, the shortcomings of process is complicated, and equipment price is high, and repair in it can not ensure the interchangeability of aftercarriage and bogie.It is related to this
Kind rail vehicle electronic scale solves the above problem well, can accurately carry out car body tune load, bogie tune spring and vehicle
Weigh, have that accuracy is high, and cumulative errors are small, efficient, adjust the advantages that to carry weighing process simple, cheap.
The content of the invention
The object of the present invention is to provide a kind of rail vehicle electronic scale, it can efficiently solve car body tune load, bogie tune
The technical problem that spring and vehicle are weighed.
The mesh of the present invention is achieved through the following technical solutions:
A kind of rail vehicle electronic scale, including electronic scale, electronic scale display screen and laser leveler, setting at the top of electronic scale
There is the plunger barrel of composite construction, one side tube-wall of plunger barrel middle part is following to be provided with straight slot, and piston body is horn-like tubular construction;Safety barrel
For tubular hollow structure, a side tube-wall is also provided with straight slot, is matched with plunger barrel straight slot, and the top of its bottom and electronic scale is fixed,
Top is equipped with the through hole coordinated with piston rod, and air spring is equipped with cylinder, and the bottom of air spring is flushed with the bottom of safety barrel, top
Portion is located in the horn mouth of piston body, the outer wall of safety barrel and the inner wall clearance fit of plunger barrel;The middle part of piston rod and plunger barrel
The through hole at top is fixed, and top is equipped with column cap;One end of rocker arm shaft is fixed with levelling valve valve body, and the other end passes through safety barrel cylinder
The straight slot of wall is fixed with piston body, and levelling valve is fixed by stent and ground;Photosensitive open is equipped with the middle part of the outer wall of plunger barrel
Close, photosensitive switch is connected by conducting wire with light-operated electromagnetic air valve;The arranged on left and right sides of electronic scale is equipped with cylinder, gas transmission manifold
One end connected through the delivery outlet of cylinder main valve and air gauge and cylinder, the air inlet of the other end and levelling valve connects, high
Spend the gas outlet of control valve and the inlet manifold of air spring connects;On the pipeline of gas transmission manifold and connect bronchus one and bronchus
Two, it is attempted by after concatenating manual electromagnetic air valve and light-operated electromagnetic air valve in one pipeline of bronchus in two pipeline of bronchus, if
There is two pipeline of bronchus of dedicated air valve and connect after bronchus one with the inlet manifold of air spring and connecing.
The manual control electromagnetic air valve is connected by conducting wire with electromagnetic valve switch.
It is tiles structure at the top of the column cap.
The bronchus one is attempted by after the dedicated air valve in two pipeline of bronchus.
The electronic scale display screen is connected by conducting wire with four horizontally disposed electronic scales.
The air inlet of the tapered air spring is made of three gas circuits, where one is the air inlet of levelling valve
Gas transmission manifold, one is that manual electromagnetic air valve is connected the bronchus one of light-operated electromagnetic air valve, and another is dedicated air valve
Place bronchus two, electromagnetic valve switch pass through the light-operated electricity of polygon control survey by polygon control survey manual control electromagnetic air valve, photosensitive switch
Magnetic air valve.
The safety barrel is a hollow tubular structure, and top is provided with circular hole, makes the piston rod automatic centering of piston body, cylinder
Wall is provided with straight slot, makes the rocker arm shaft of levelling valve can be moved back and forth up and down in straight slot.
Further, four electronic scale levels are in rectangular layout, and safety barrel is respectively equipped with above electronic scale, is set in safety barrel
Have tapered air spring, the air inlet of tapered air spring is made of three branches, one be levelling valve air inlet institute
In gas transmission manifold, one is the light-operated electromagnetic air valve bronchus one of manual electromagnetic air valve series connection, and another is dedicated air valve
Place bronchus two.By setting the height of levelling valve rocker arm shaft that four supporting heads can be ensured substantially in same height
Degree, to improve precision and accuracy, using electronic laser level measurement horizontal level, the resistance switch sense inside photosensitive switch
Light beam and then the break-make of light-operated solenoid valve stress be controlled, height is accurately adjusted;Additionally using dedicated air valve into
Row is adjusted manually, and flexibility is strong, simple and fast.
The cylinder supplies tapered air spring gases at high pressure by gas transmission manifold, when car body tune load, bogie tune spring,
The height of four column caps is allowed to again since wheel (axis) is shifted not in the same horizontal position again by being inflated to tapered air spring
The same horizontal position is returned to, the size of decompression amount can be obtained by air gauge, using decompressed pressure and cylinder area according to public
Formula:F=SP, the tune that can be calculated on each column cap carry power, and it is exactly the power for needing to redistribute in supporting point that this, which adjusts and carries power, so
Afterwards by readjusting structure or device location, it is equal to the equivalent force size that supporting point is reduced or increased and adjusts load power to reach tune load
The purpose weighed, it is possible to achieve the wheel weight deviation of vehicle is no more than ± the 4% of coaxial average wheel weight, and axis weight deviation is no more than average
Axis weight ± 2%, four support point tolerances of car body are no more than the requirement of 1kg.
The advantages of prior art of the present invention is compared and effect:With being weighed by electronic scale, being filled using cylinder to air spring
Gas carries out local adjust and carries, and coarse height is carried out using levelling valve, then empty using laser leveler, photo resistance and electromagnetism
Air valve, which coordinates, carries out fine height, forms two-stage height-regulating structure;High with accuracy, cumulative errors are small, efficient, adjust load to weigh
Process is simple, it is cheap the advantages that.The wheel weight deviation for reaching vehicle is no more than ± the 4% of coaxial average wheel weight, axis weight deviation
No more than average axle load ± 2%, standard requirement of the four support point tolerances of car body no more than 1kg, has accuracy high, adds up to miss
Difference it is small, it is efficient, adjust carry weighing process it is simple, it is cheap the advantages that.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention;
Fig. 2 is the partial structural diagram of the present invention;
Fig. 3 is another partial structural diagram of the present invention;
Fig. 4 is the levelling valve schematic diagram of the present invention;
Fig. 5 is the partial front elevation view of the present invention;
Fig. 6 is the partial sectional view of the present invention;
Fig. 7 is the piston body and safety barrel front view of the present invention;
Fig. 8 is the piston body and safety barrel sectional view of the present invention;
Fig. 9 is the piston body of the present invention and the front view of plunger barrel;
Figure 10 is the piston body of the present invention and the sectional view of plunger barrel.
Embodiment
As shown in Figure 1, a kind of rail vehicle electronic scale, including electronic scale 1, electronic scale display screen 15 and laser leveler
10, it is characterised in that:The plunger barrel 12 equipped with composite construction at the top of electronic scale 1,12 1 side tube-wall of plunger barrel middle part is following to open
There is straight slot, piston body 19 is horn-like tubular construction;Safety barrel 2 is tubular hollow structure, and a side tube-wall is also provided with straight slot, with plunger
Cylinder 12 straight slots matching, its bottom and the top of electronic scale 1 are fixed, and top is equipped with the through hole coordinated with piston rod, and sky is equipped with cylinder
Gas spring 16, the bottom of air spring 16 are flushed with the bottom of safety barrel 2, and top is located in the horn mouth of piston body 19, safety barrel 2
The inner wall clearance fit of outer wall and plunger barrel 12;The middle part of piston rod and the through hole at the top of plunger barrel 12 are fixed, and top is equipped with column
First 11;One end of rocker arm shaft 18 is fixed with 9 valve body of levelling valve, straight slot and piston body 19 of the other end through 2 barrel of safety barrel
Fixed, levelling valve 9 is fixed by stent 20 with ground;Photosensitive switch 8, photosensitive switch are equipped with the middle part of the outer wall of plunger barrel 12
8 are connected by conducting wire 21 with light-operated electromagnetic air valve 5;The arranged on left and right sides of electronic scale 1 is equipped with cylinder 6, and the one of gas transmission manifold 17
End is connected through cylinder main valve 13 and air gauge 7 with the delivery outlet of cylinder 6, and the other end is connected with the air inlet of levelling valve 9, high
The gas outlet of degree control valve 9 is connected with the inlet manifold 24 of air spring 16;On the pipeline of gas transmission manifold 17 and connect bronchus one
22 and bronchus 2 23, it is attempted by branch after concatenating manual electromagnetic air valve 3 and light-operated electromagnetic air valve 5 in one 22 pipeline of bronchus
In 2 23 pipeline of tracheae, 2 23 pipeline of bronchus equipped with dedicated air valve 4 and connect after bronchus 1 with air spring 16
Inlet manifold 24 simultaneously connects;The manual control electromagnetic air valve 3 is connected by conducting wire 21 with electromagnetic valve switch 14;The top of column cap 11
For tiles structure.The bronchus 1 is attempted by after the dedicated air valve 4 in 2 23 pipeline of bronchus;The electronic scale is shown
Display screen 15 is connected by conducting wire 21 with four electronic scales 1.
Further, the levelling valve 9 can ensure four supporting heads substantially in sustained height, to improve precision
And accuracy, measure horizontal level using electronic laser level meter 10, the resistance switch of the inside of photosensitive switch 8 sense laser beam into
And the break-make of light-operated solenoid valve 5 is controlled, height is accurately adjusted;Additionally adjusted manually using dedicated air valve 4
Section, flexibility is strong, simple and fast.16 gases at high pressure of cylinder supply tapered air spring, when car body tune load, bogie tune spring
When, the height of four column caps 11 shifts not in the same horizontal position again due to taking turns (axis), is made by being inflated to tapered air spring
The size for coming back to the same horizontal position, decompression amount being obtained by air gauge 7, according to decompressed pressure and cylinder area
According to formula:F=SP, the tune that can be calculated on each column cap carry power, and it is exactly to need to redistribute in supporting point that this, which adjusts and carries power,
Power, then by readjusting structure or device location, the equivalent force size that supporting point is reduced or increased is equal to adjust and is carried power
It can realize the purpose for adjusting and carrying and weighing.
Weighed using electronic scale, inflated using cylinder by gas transmission manifold to air spring and carry out local tune load, by adopting
Coarse height is carried out with levelling valve, is then coordinated using laser leveler, photo resistance and electromagnetic air valve and carries out accurate adjustment
Highly, two-stage height-regulating structure is formed;High with accuracy, cumulative errors are small, efficient, and tune load weighing process is simple, and price is low
The advantages that honest and clean.When progress car body tune load, bogie tune spring and vehicle are weighed, cylinder main valve is opened, cylinder passes through gas transmission manifold
Inflated to tapered air spring, tapered air spring inflates upward top pressure piston body, rocking arm of the piston body with pneumatic height control valve
Axis move up and down in the straight slot of plunger barrel and safety barrel control levelling valve intake valve and air bleeding valve opening and closing;Cylinder starts
Exhaust is filled to tapered air spring, starts to inflate when tapered air spring precompressed is inadequate, starts to be vented when precompressed is excessive, until
Rocker arm shaft reaches predetermined altitude, and column cap height base stabilization levelling valve in the same horizontal position is stopped, closes at this time
Levelling valve switchs, height coarse adjustment section end.Laser leveler is opened, the height for adjusting laser beam is allowed to slightly above highest
One photosensitive switch, opens electromagnetic switch, leads the long manual electromagnetic air valve closed and normally opened light-operated electromagnetic air valve gas circuit
Logical, cylinder starts to inflate to each tapered air spring;The control circuit tandem photosensitive switch of light-operated electromagnetic air valve, works as plunger
When photosensitive switch on cylinder reaches the horizontal level for the laser beam that laser leveler is sent, light-operated electromagnetism is cut off in photosensitive switch action
Air valve controling circuit, light-operated electromagnetic air valve are closed, and gas circuit cut-out, respectively carries out four tapered air springs same behaviour
Make, height fine-adjustment terminates when gas circuit is all cut off, and preliminary preparation is completed.
Needs tune is carried into the car body weighed or bogie falls on four column caps, the height of four column caps is due to wheel at this time
(axis) shifts not in the same horizontal position again, is again turned on cylinder main valve, records air pressure gauge pressure values, piston body band dynamic height control
The rocker arm shaft of valve processed moves up and down in the straight slot of plunger barrel and safety barrel makes tapered air spring fill exhaust, finally makes column cap height
The same horizontal position is basically stable at again, closes levelling valve switch, height coarse adjustment section end.Open laser leveler,
The height of adjustment laser beam makes the photosensitive switch holding level in intermediate altitude with four photosensitive switch final positions, opens electromagnetism and opens
Close, make the long manual electromagnetic air valve closed and the conducting of normally opened light-operated electromagnetic air valve gas circuit, cylinder starts empty to each taper
Gas spring is inflated;It is photosensitive to open when the photosensitive switch on plunger barrel reaches the horizontal level for the laser beam that laser leveler is sent
Light-operated electromagnetic air valve controling circuit is cut off in pass action, and light-operated electromagnetic air valve is closed, gas circuit cut-out, respectively to four taper skies
Gas spring carries out same operation, and height fine-adjustment terminates when gas circuit is all cut off, and records the inner gas pressure of each tapered air spring
P, using decompressed pressure p and cylinder area S according to formula:F=SP, the tune that can be calculated on each column cap carry power, this, which is adjusted, carries
Power is exactly to need the power redistributed in supporting point, then by readjusting structure or device location, make supporting point reduce or
Increased equivalent force size, which is equal to adjust, carries power, achievees the purpose that to adjust to carry and weighs, it is possible to achieve the wheel weight deviation of vehicle is no more than same
Axis averagely takes turns ± the 4% of weight, and axis weight deviation is no more than average axle load ± 2%, and four support point tolerances of car body are wanted no more than 1kg
Ask.
Embodiment of the present invention does not form the limitation to the application scope, every in present inventive concept
Within spirit and principle, all any modification, equivalent and improvement that one of skill in the art can make etc. should be included in
Within protection scope of the present invention.
Claims (5)
1. a kind of rail vehicle electronic scale, including electronic scale (1), electronic scale display screen (15) and laser leveler (10), it is special
Sign is:The plunger barrel (12) equipped with composite construction at the top of electronic scale (1), (12) one side tube-wall of plunger barrel middle part is following to be provided with
Straight slot, piston body (19) are horn-like tubular construction;Safety barrel (2) is tubular hollow structure, and a side tube-wall is also provided with straight slot, with column
Plug tube (12) straight slot matches, and the top of its bottom and electronic scale (1) fixes, and top is equipped with the through hole with piston rod cooperation, in cylinder
Equipped with air spring (16), the bottom of air spring (16) is flushed with the bottom of safety barrel (2), and top is located at the loudspeaker of piston body (19)
In mouth, the outer wall of safety barrel (2) and the inner wall clearance fit of plunger barrel (12);At the top of the middle part of piston rod and plunger barrel (12)
Through hole is fixed, and top is equipped with column cap (11);One end of rocker arm shaft (18) is fixed with levelling valve (9) valve body, and the other end passes through
The straight slot of safety barrel (2) barrel is fixed with piston body (19), and levelling valve (9) is fixed by stent (20) with ground;Plunger barrel
(12) photosensitive switch (8) is equipped with the middle part of outer wall, photosensitive switch (8) is connected by conducting wire (21) with light-operated electromagnetic air valve (5);
The arranged on left and right sides of electronic scale (1) is equipped with cylinder (6), and one end of gas transmission manifold (17) is through cylinder main valve (13) and air gauge (7)
It is connected with the delivery outlet of cylinder (6), the other end is connected with the air inlet of levelling valve (9), the gas outlet of levelling valve (9)
It is connected with the inlet manifold (24) of air spring (16);On the pipeline of gas transmission manifold (17) and connect bronchus one (22) and bronchus
Two (23), branch gas is attempted by after manual electromagnetic air valve (3) and light-operated electromagnetic air valve (5) are concatenated in bronchus one (22) pipeline
In pipe two (23) pipeline, bronchus two (23) pipeline equipped with dedicated air valve (4) and connect bronchus one (22) afterwards with air bullet
The inlet manifold (24) of spring (16) simultaneously connects.
A kind of 2. rail vehicle electronic scale according to claim 1, it is characterised in that:The manual control electromagnetic air valve (3)
It is connected by conducting wire (21) with electromagnetic valve switch (14).
A kind of 3. rail vehicle electronic scale according to claim 1, it is characterised in that:It is tiles at the top of the column cap (11)
Structure.
A kind of 4. rail vehicle electronic scale according to claim 1, it is characterised in that:The bronchus one (22) is attempted by
After dedicated air valve (4) in bronchus two (23) pipeline.
5. a kind of rail vehicle electronic scale according to claim 1, it is characterised in that the electronic scale display screen (15) is logical
Conducting wire (21) is crossed to be connected with four electronic scales (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711381917.0A CN107941313B (en) | 2017-12-20 | 2017-12-20 | Rail vehicle electronic scale |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711381917.0A CN107941313B (en) | 2017-12-20 | 2017-12-20 | Rail vehicle electronic scale |
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CN107941313A true CN107941313A (en) | 2018-04-20 |
CN107941313B CN107941313B (en) | 2023-09-15 |
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CN201711381917.0A Active CN107941313B (en) | 2017-12-20 | 2017-12-20 | Rail vehicle electronic scale |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109969976A (en) * | 2019-04-09 | 2019-07-05 | 唐山百川智能机器股份有限公司 | For fixed car lifting J-Horner with trigger structure |
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GB1408479A (en) * | 1972-12-11 | 1975-10-01 | Oerlikon Buehrle Ag | Load cell |
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CN101726351A (en) * | 2009-11-16 | 2010-06-09 | 浙江大学 | Suspension type vehicle weighting lifting device for drum-type motor vehicle detecting system |
CN101922963A (en) * | 2009-06-10 | 2010-12-22 | 孟凡英 | Automatic conveying truck scale |
CN201876366U (en) * | 2010-09-27 | 2011-06-22 | 北京新联铁科技发展有限公司 | Static load test table for bogie of railway vehicle |
CN207556651U (en) * | 2017-12-20 | 2018-06-29 | 青岛西交检验检测科技有限公司 | A kind of rail vehicle electronics tune carries weighing apparatus |
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2017
- 2017-12-20 CN CN201711381917.0A patent/CN107941313B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1408479A (en) * | 1972-12-11 | 1975-10-01 | Oerlikon Buehrle Ag | Load cell |
CN86108437A (en) * | 1986-12-20 | 1988-07-13 | 水利电力部华北电力设计院 | Novel " tippler electronics weighing apparatus " weighing device |
DE10300087A1 (en) * | 2002-01-07 | 2003-07-24 | Inwatec Gmbh | Measurement device for measurement of the corner forces and tension free reference positions of carriage bodies, especially train carriages, is designed so that the falsifying effects of torsion forces are minimized |
CN101922963A (en) * | 2009-06-10 | 2010-12-22 | 孟凡英 | Automatic conveying truck scale |
CN101726351A (en) * | 2009-11-16 | 2010-06-09 | 浙江大学 | Suspension type vehicle weighting lifting device for drum-type motor vehicle detecting system |
CN201876366U (en) * | 2010-09-27 | 2011-06-22 | 北京新联铁科技发展有限公司 | Static load test table for bogie of railway vehicle |
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CN109969976A (en) * | 2019-04-09 | 2019-07-05 | 唐山百川智能机器股份有限公司 | For fixed car lifting J-Horner with trigger structure |
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