CN107941313B - Rail vehicle electronic scale - Google Patents
Rail vehicle electronic scale Download PDFInfo
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- CN107941313B CN107941313B CN201711381917.0A CN201711381917A CN107941313B CN 107941313 B CN107941313 B CN 107941313B CN 201711381917 A CN201711381917 A CN 201711381917A CN 107941313 B CN107941313 B CN 107941313B
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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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Abstract
The application discloses an electronic scale for a railway vehicle, and belongs to the technical field of weighing machines. A fixed cylinder is arranged at the top of the electronic scale, a conical air spring is arranged in the fixed cylinder, and the outer side of the cylinder wall is in clearance fit with the inner side of the plunger cylinder; the plunger cylinder is of a cylindrical structure, the inner side of the cylinder wall is in clearance fit with the fixed cylinder, a through groove is formed in the cylinder wall at one side, the top through hole is fixed with the piston body, and a photosensitive switch is arranged at the lower part of the outer wall of the plunger cylinder; the horn-shaped piston body is connected with a rocker arm shaft of the height control valve, is positioned in the fixed cylinder and is nested with the conical air spring, and the top of the rocker arm shaft is provided with a column head; the air inlet of the conical air spring consists of three air passages, and the height control valve, the manual control electromagnetic air valve, the series connection light control electromagnetic air valve and the standby air valve respectively control one air passage. The fixed cylinder is of a cylindrical structure, a round hole is formed in the top of the fixed cylinder, and a through groove is formed in the cylinder wall. The top of the column head is of a tile-shaped structure, and the lower cylinder is matched with the piston rod; the front and the back of the electronic scale are respectively provided with a laser level meter and an electronic scale display screen.
Description
Technical Field
The application belongs to the technical field of weighing apparatus.
Background
The existing rail scales are mainly divided into a static rail scale and a dynamic rail scale, and the static rail scale mainly weighs trucks in a static state. There are mechanical, electromechanical, and electronic types 3. When the mechanical static rail weigher weighs, the locomotive accurately stops the truck on the bearing table at a speed lower than 3km/h, after unhooking, a driver and a balance member moves a big weight and a xiao You weight on the metering lever to balance the lever, and the weight is read according to the sum of indication values of the big weight and the xiao You weight on the main lever and the auxiliary lever. The defects are that the operation is complex, the efficiency is low, and the device is not suitable for being arranged on a line with frequent train passing. The electromechanical combined static rail weigher has the same structural principle as mechanical one. But a weighing sensor is arranged at the joint of the force transmission lever, and the weighing display automatically displays the weighing. The electronic static rail weighbridge consists of a bearing table, a sensor, a weighing display instrument and a digital printer 4. The weighing values and the printed records can be automatically displayed. The method has the characteristics of remote information transmission, continuous metering and the like.
The dynamic rail weigher is mainly used for weighing a truck in running. And an organic-electric combination type and an electronic type. The metering mode is that the whole car metering, the bogie metering and the axle metering are 3. The bearing table comprises a single table top, a double table top, a three table top and the like. When the electronic dynamic rail weigher weighs, the train passes through the bearing table at a speed less than 15km/h, the locomotive and the truck are automatically distinguished, the load of the truck is converted into an electric signal by utilizing a sensor supporting the bearing table and amplified by an amplifier, then the electric signal is converted into a digital signal by a converter and is input into a computer, and various data of the load of the truck can be displayed after processing and can be printed and recorded.
The bell factory of AlSTOM company in France realizes the weighing and load adjustment of the vehicle body secondary suspension device through a horizontal weighing table and a horizontal workbench. The German AST company develops a railway vehicle frame system with a measuring function by applying DIN 25045 standard, the system can measure the balance load and displacement of a four-point vehicle body, determine the gravity center and the weight of the vehicle, symmetrically distribute the pressure of the vehicle to a track, and realize high-speed running of the vehicle body under a tension-free state. The device is introduced by the Limited company of electric locomotives in China for weighing and load adjustment of urban rail vehicles, and is matched with a bogie test bed developed by the Windhoff company in Germany, and after the load distribution of two parts and the position condition of each joint point meet the requirement of balanced redistribution of vehicle wheels (axles), the wheel (axle) weight transfer in the running process of the vehicles is furthest inhibited through simulated loading.
The static and dynamic rail scales can only weigh trucks on rails, need to assemble rolling stocks and weigh the rolling stocks under the condition of being capable of running, can not weigh and load the unassembled bogie and the vehicle body before leaving the factory, and can not eliminate the weight deviation of wheels (axles). The existing weighing and load-adjusting systems at home and abroad have the defects of inaccurate load adjustment, accumulated error, low efficiency, complex process, high equipment price and the like, and the interchangeability of a vehicle body and a bogie after middle repair cannot be ensured. The electronic scale for the railway vehicle solves the problems well, can accurately carry out vehicle body load adjustment, bogie spring adjustment and whole vehicle weighing, and has the advantages of high accuracy, small accumulated error, high efficiency, simple load adjustment and weighing process, low price and the like.
Disclosure of Invention
The application aims to provide an electronic scale for a railway vehicle, which can effectively solve the technical problems of vehicle body load regulation, bogie spring regulation and whole vehicle weighing.
The aim of the application is realized by the following technical scheme:
the rail vehicle electronic scale comprises an electronic scale, an electronic scale display screen and a laser level meter, wherein a plunger cylinder with a composite structure is arranged at the top of the electronic scale, a through groove is formed below the middle part of the cylinder wall at one side of the plunger cylinder, and a piston body is of a horn-shaped cylinder structure; the fixed cylinder is of a cylindrical hollow structure, the cylinder wall on one side is also provided with a through groove which is matched with the through groove of the plunger cylinder, the bottom of the fixed cylinder is fixed with the top of the electronic scale, the top of the fixed cylinder is provided with a through hole matched with the piston rod, an air spring is arranged in the cylinder, the bottom of the air spring is flush with the bottom of the fixed cylinder, the top of the air spring is positioned in a horn mouth of the piston body, and the outer wall of the fixed cylinder is in clearance fit with the inner wall of the plunger cylinder; the middle part of the piston rod is fixed with a through hole at the top of the plunger cylinder, and the top is provided with a column head; one end of the rocker shaft is fixed with the valve body of the height control valve, the other end of the rocker shaft penetrates through the through groove of the fixed cylinder wall to be fixed with the piston body, and the height control valve is fixed with the ground through the bracket; the middle part of the outer wall of the plunger cylinder is provided with a photosensitive switch which is connected with a light-operated electromagnetic air valve through a lead; the left and right sides of the electronic scale are provided with air cylinders, one end of the air transmission main pipe is connected with the output port of the air cylinder through an air cylinder main valve and an air pressure gauge, the other end of the air transmission main pipe is connected with the air inlet of the height control valve, and the air outlet of the height control valve is connected with the air inlet main pipe of the air spring; the pipeline of the air delivery main pipe is connected with a first bronchus and a second bronchus in parallel, the first bronchus is connected with a manual electromagnetic air valve and a light-operated electromagnetic air valve in series and then connected with the second bronchus, and the second bronchus provided with a standby air valve is connected with the first bronchus in parallel and then connected with the air inlet main pipe of the air spring in parallel.
The manual electromagnetic air valve is connected with the electromagnetic valve switch through a wire.
The top of the column head is of a tile-shaped structure.
The first bronchus is connected in parallel behind a standby air valve in the second bronchus.
The electronic scale display screen is connected with four electronic scales which are horizontally arranged through wires.
The air inlet of the conical air spring consists of three air paths, one is an air transmission main pipe where the air inlet of the height control valve is located, the other is a branch pipe I where the manual electromagnetic air valve is connected in series with the light-operated electromagnetic air valve, the other is a branch pipe II where the standby air valve is located, the electromagnetic valve switch controls the manual electromagnetic air valve through a wire, and the photosensitive switch controls the light-operated electromagnetic air valve through a wire.
The fixed cylinder is of a hollow cylindrical structure, a round hole is formed in the top of the fixed cylinder, a piston rod of the piston body is automatically centered, a through groove is formed in the cylinder wall, and a rocker shaft of the height control valve can reciprocate up and down in the through groove.
Further, the four electronic scales are arranged in a rectangular mode, fixed cylinders are arranged on the electronic scales respectively, conical air springs are arranged in the fixed cylinders, air inlets of the conical air springs consist of three branches, one branch is a gas transmission main pipe where an air inlet of a height control valve is located, the other branch is a branch pipe where a manual electromagnetic air valve is connected in series with a light-operated electromagnetic air valve, and the other branch is a branch pipe II where a standby air valve is located. The height of the rocker shaft of the height control valve can ensure that the four support column heads are approximately at the same height, and in order to improve the precision and the accuracy, the laser electronic level meter is utilized to measure the horizontal position, and the resistance switch in the photosensitive switch senses the laser beam so as to control the on-off of the light-operated electromagnetic valve, so that the height is accurately adjusted; in addition, the standby air valve can be used for manual adjustment, so that the flexibility is high, and the manual adjustment is simple and quick.
The cylinder supplies high-pressure gas to the conical air spring through the gas transmission main pipe, when the vehicle body is used for load adjustment and the bogie is used for spring adjustment, the heights of the four column heads are not in the same horizontal position due to the fact that the weight of the wheel (shaft) is transferred, the conical air spring is inflated to enable the wheel (shaft) to return to the same horizontal position again, the pressure reduction amount can be obtained through the barometer, and the pressure reduction pressure and the area of the cylinder are utilized according to the formula:the load adjusting force on each column head can be calculated, the load adjusting force is the force required to be redistributed at the supporting points, then the equal force of the reducing or increasing of the supporting points is equal to the load adjusting force through readjusting the positions of the structures or the equipment, the purpose of load adjusting and weighing is achieved, and the requirements that the wheel weight deviation of a vehicle is not more than +/-4% of the coaxial average wheel weight, the axle weight deviation is not more than +/-2% of the average axle weight and the error of four supporting points of the vehicle body is not more than 1kg can be achieved.
Compared with the prior art, the application has the advantages and effects that: the electronic weighing device is used for carrying out local load adjustment by inflating an air spring through an air cylinder, carrying out rough height adjustment through a height control valve, and then carrying out fine height adjustment through the cooperation of a laser level meter, a photoresistor and an electromagnetic air valve to form a two-stage height adjustment structure; the method has the advantages of high accuracy, small accumulated error, high efficiency, simple load-adjusting and weighing process, low price and the like. The method has the advantages of high accuracy, small accumulated error, high efficiency, simple load-adjusting and weighing process, low price and the like, and the wheel weight deviation of the vehicle is not more than +/-4% of the coaxial average wheel weight, the axle weight deviation is not more than +/-2% of the average axle weight, and the error of four support points of the vehicle body is not more than 1kg of standard requirements.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present application.
Fig. 2 is a schematic view of a partial structure of the present application.
Fig. 3 is a schematic view of another partial structure of the present application.
FIG. 4 is a schematic view of a height control valve of the present application.
Fig. 5 is a partial front view of the present application.
Fig. 6 is a partial cross-sectional view of the present application.
Fig. 7 is a front view of the piston body and stator of the present application.
Fig. 8 is a cross-sectional view of the piston body and stator of the present application.
Fig. 9 is a front view of the piston body and plunger barrel of the present application.
Fig. 10 is a cross-sectional view of the piston body and plunger barrel of the present application.
Description of the embodiments
As shown in fig. 1, an electronic scale for a railway vehicle includes an electronic scale 1, an electronic scale display screen 15 and a laser level 10, and is characterized in that: the top of the electronic scale 1 is provided with a plunger cylinder 12 with a composite structure, a through groove is formed below the middle part of the cylinder wall at one side of the plunger cylinder 12, and a piston body 19 is of a horn-shaped cylindrical structure; the fixed cylinder 2 is of a cylindrical hollow structure, the cylinder wall at one side is also provided with a through groove which is matched with the through groove of the plunger cylinder 12, the bottom of the fixed cylinder is fixed with the top of the electronic scale 1, the top of the fixed cylinder is provided with a through hole matched with a piston rod, an air spring 16 is arranged in the cylinder, the bottom of the air spring 16 is flush with the bottom of the fixed cylinder 2, the top of the air spring is positioned in a horn mouth of the piston body 19, and the outer wall of the fixed cylinder 2 is in clearance fit with the inner wall of the plunger cylinder 12; the middle part of the piston rod is fixed with a through hole at the top of the plunger barrel 12, and the top is provided with a column head 11; one end of a rocker shaft 18 is fixed with a valve body of the height control valve 9, the other end of the rocker shaft passes through a through groove on the wall of the fixed cylinder 2 and is fixed with a piston body 19, and the height control valve 9 is fixed with the ground through a bracket 20; the middle part of the outer wall of the plunger cylinder 12 is provided with a photosensitive switch 8, and the photosensitive switch 8 is connected with the light-operated electromagnetic air valve 5 through a lead 21; the left and right sides of the electronic scale 1 are provided with air cylinders 6, one end of a gas transmission main pipe 17 is connected with the output port of the air cylinders 6 through a cylinder main valve 13 and a barometer 7, the other end of the gas transmission main pipe is connected with the gas inlet of a height control valve 9, and the gas outlet of the height control valve 9 is connected with a gas inlet main pipe 24 of an air spring 16; the first branch pipe 22 and the second branch pipe 23 are connected in parallel on the pipeline of the gas transmission main pipe 17, the first branch pipe 22 is connected in series with the manual electromagnetic air valve 3 and the light-operated electromagnetic air valve 5 and then connected in parallel in the second branch pipe 23, and the second branch pipe 23 provided with the standby air valve 4 is connected in parallel with the first branch pipe 22 and then connected in parallel with the gas inlet main pipe 24 of the air spring 16; the manual electromagnetic air valve 3 is connected with the electromagnetic valve switch 14 through a lead 21; the top of the column head 11 is in a tile-shaped structure. The first branch pipe 22 is connected in parallel behind the standby air valve 4 in the second branch pipe 23 pipeline; the electronic scale display screen 15 is connected with the four electronic scales 1 through leads 21.
Further, the height control valve 9 can ensure that the four support column heads are at the same height, and in order to improve the precision and accuracy, the laser electronic level meter 10 is utilized to measure the horizontal position, and the resistance switch in the photosensitive switch 8 senses the laser beam to further control the on-off of the light-operated electromagnetic valve 5, so that the height is accurately adjusted; in addition, the standby air valve 4 can be utilized for manual adjustment, so that the flexibility is high, and the method is simple and quick. The cylinder supplies high-pressure gas to the conical air spring 16, when the vehicle body is used for load adjustment and the bogie is used for spring adjustment, the heights of the four column heads 11 are not in the same horizontal position due to the fact that the weight of the wheel (shaft) is transferred, the conical air spring is inflated to enable the wheel (shaft) to return to the same horizontal position again, the pressure reduction amount can be obtained through the barometer 7, and according to the pressure reduction and the area of the cylinder, the pressure reduction amount is calculated according to the formula:the load adjusting force on each column head can be calculated, the load adjusting force is the force required to be redistributed at the supporting point, and then the purpose of load adjusting and weighing can be realized by readjusting the structure or the equipment position to ensure that the equal force of the reduction or the increase of the supporting point is equal to the load adjusting force.
The electronic balance is used for weighing, the air spring is inflated through the air transmission main pipe by using the air cylinder for carrying out local load adjustment, the height is roughly adjusted by adopting the height control valve, and then the laser level meter, the photoresistor and the electromagnetic air valve are matched for carrying out fine height adjustment, so that a two-stage height adjustment structure is formed; the method has the advantages of high accuracy, small accumulated error, high efficiency, simple load-adjusting and weighing process, low price and the like. When the vehicle body load adjustment, the bogie spring adjustment and the whole vehicle weighing are carried out, a cylinder main valve is opened, the cylinder charges a conical air spring through a gas transmission main pipe, the conical air spring charges and pushes a piston body upwards, and the piston body drives a rocker shaft of a height control valve to move up and down in through grooves of a plunger cylinder and a fixed cylinder to control opening and closing of an air inlet valve and an air outlet valve of the height control valve; the cylinder starts to charge and discharge the conical air spring, when the conical air spring is insufficiently pre-pressed, the cylinder starts to charge and discharge the air when the pre-pressing is too high, the height control valve stops working when the rocker shaft reaches a preset height and the column head is stable at the same horizontal position, and at the moment, the height control valve switch is closed, and the height coarse adjustment is finished. Opening a laser level meter, adjusting the height of the laser beam to be slightly higher than the highest photosensitive switch, opening an electromagnetic switch to enable a long-closed manual electromagnetic air valve to be communicated with a normally open light-operated electromagnetic air valve air passage, and enabling an air cylinder to start to charge each conical air spring; when the photosensitive switch on the plunger cylinder reaches the horizontal position of the laser beam emitted by the laser level meter, the photosensitive switch acts to cut off the control circuit of the light-operated electromagnetic air valve, the light-operated electromagnetic air valve is closed, the air passage is cut off, the same operation is respectively carried out on the four conical air springs, the high-precision adjustment is finished when the air passage is cut off, and the early-stage preparation work is finished.
The car body or bogie which needs to be adjusted and weighed is dropped on four sidesAnd on the column heads, at the moment, the heights of the four column heads are not in the same horizontal position due to the weight transfer of the wheel (shaft), the cylinder main valve is opened again, the barometer pressure value is recorded, the piston body drives the rocker shaft of the height control valve to move up and down in the through grooves of the plunger cylinder and the fixed cylinder so as to charge and discharge the conical air spring, finally, the column heads are basically stabilized at the same horizontal position again, the height control valve switch is closed, and the height coarse adjustment is finished. The laser level meter is turned on, the height of the laser beam is adjusted to enable the photosensitive switches which are positioned at the middle height with the four photosensitive switches to be kept horizontal, the electromagnetic switch is turned on to enable the long closed manual electromagnetic air valve to be communicated with the normally open light-operated electromagnetic air valve air passage, and the air cylinder starts to charge each conical air spring; when the photosensitive switch on the plunger cylinder reaches the horizontal position of the laser beam emitted by the laser level meter, the photosensitive switch acts to cut off the light-operated electromagnetic air valve control circuit, the light-operated electromagnetic air valve is closed, the air passage is cut off, the same operation is respectively carried out on the four conical air springs, the high-precision adjustment is finished when the air passage is cut off, and the inflation pressure of each conical air spring is recordedPBy means of reduced pressurepArea of cylinderSAccording to the formula:the load adjusting force on each column head can be calculated, the load adjusting force is the force required to be redistributed at the supporting points, then the equal force of the decreasing or increasing of the supporting points is equal to the load adjusting force through readjusting the structure or the equipment position, the purpose of load adjusting and weighing is achieved, and the requirements that the wheel weight deviation of a vehicle is not more than +/-4% of the coaxial average wheel weight, the axle weight deviation is not more than +/-2% of the average axle weight and the error of four supporting points of the vehicle body is not more than 1kg can be achieved.
The described embodiments of the application should not be construed as limiting the scope of the application, but any modifications, equivalent substitutions and improvements that can be made by those skilled in the art are intended to be included within the spirit and principles of the inventive concept.
Claims (5)
1. The utility model provides a rail vehicle electronic scale, includes electronic scale (1), electronic scale display screen (15) and laser spirit level (10), its characterized in that: the top of the electronic scale (1) is provided with a plunger cylinder (12) with a composite structure, a through groove is formed below the middle part of the cylinder wall at one side of the plunger cylinder (12), and the piston body (19) is of a horn-shaped cylinder structure; the fixed cylinder (2) is of a cylindrical hollow structure, a through groove is formed in the cylinder wall on one side of the fixed cylinder and is matched with the through groove of the plunger cylinder (12), the bottom of the fixed cylinder is fixed with the top of the electronic scale (1), a through hole matched with a piston rod is formed in the top of the fixed cylinder, an air spring (16) is arranged in the fixed cylinder, the bottom of the air spring (16) is flush with the bottom of the fixed cylinder (2), the top of the air spring is positioned in a horn mouth of the piston body (19), and the outer wall of the fixed cylinder (2) is in clearance fit with the inner wall of the plunger cylinder (12); the middle part of the piston rod is fixed with a through hole at the top of the plunger cylinder (12), and the top is provided with a column head (11); one end of a rocker shaft (18) is fixed with a valve body of a height control valve (9), the other end of the rocker shaft penetrates through a through groove of the wall of the fixed cylinder (2) to be fixed with a piston body (19), and the height control valve (9) is fixed with the ground through a bracket (20); the middle part of the outer wall of the plunger cylinder (12) is provided with a photosensitive switch (8), and the photosensitive switch (8) is connected with the light-operated electromagnetic air valve (5) through a lead (21); the left side and the right side of the electronic scale (1) are respectively provided with a cylinder (6), one end of a gas transmission main pipe (17) is connected with the output port of the cylinder (6) through a cylinder main valve (13) and a barometer (7), the other end of the gas transmission main pipe is connected with the gas inlet of a height control valve (9), and the gas outlet of the height control valve (9) is connected with a gas inlet main pipe (24) of an air spring (16); the pipeline of the gas transmission main pipe (17) is connected with a first branch pipe (22) and a second branch pipe (23), the first branch pipe (22) is connected with a manual electromagnetic air valve (3) and a light-operated electromagnetic air valve (5) in series, then connected with the second branch pipe (23) pipeline in parallel, and the second branch pipe (23) pipeline provided with the standby air valve (4) is connected with the first branch pipe (22) in parallel and then connected with the gas inlet main pipe (24) of the air spring (16) in parallel.
2. The railway vehicle electronic scale of claim 1, wherein: the manual electromagnetic air valve (3) is connected with the electromagnetic valve switch (14) through a lead (21).
3. The railway vehicle electronic scale of claim 1, wherein: the top of the column head (11) is of a tile-shaped structure.
4. The railway vehicle electronic scale of claim 1, wherein: the first bronchus (22) is connected in parallel with the standby air valve (4) in the pipeline of the second bronchus (23).
5. A railway vehicle electronic scale according to claim 1, characterized in that the electronic scale display screen (15) is connected to four electronic scales (1) by means of wires (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201711381917.0A CN107941313B (en) | 2017-12-20 | 2017-12-20 | Rail vehicle electronic scale |
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| Publication Number | Publication Date |
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| CN107941313A CN107941313A (en) | 2018-04-20 |
| CN107941313B true CN107941313B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711381917.0A Active CN107941313B (en) | 2017-12-20 | 2017-12-20 | Rail vehicle electronic scale |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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| 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 |
| 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
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN107941313A (en) | 2018-04-20 |
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