CN210321960U - Four-point weighing device for railway vehicle - Google Patents
Four-point weighing device for railway vehicle Download PDFInfo
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- CN210321960U CN210321960U CN201921539473.3U CN201921539473U CN210321960U CN 210321960 U CN210321960 U CN 210321960U CN 201921539473 U CN201921539473 U CN 201921539473U CN 210321960 U CN210321960 U CN 210321960U
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Abstract
The utility model discloses a four-point weighing device of rail vehicle, including the same weighing machine of two sets of structures, weighing machine includes: base, symmetry install a set of subassembly of weighing on base linear guide, the subassembly of weighing passes through the slider and is connected with linear guide, the subassembly of weighing includes: the device comprises a lifter, a load sensor arranged at the top end of the lifter, and a pressure head arranged on the load sensor. In this way, the utility model discloses weigh to the automobile body four corners in step by four weighing component, can improve measurement accuracy, this weighing component can adjust the relative distance on the guide rail simultaneously to can adjust the measurement height through the lift, adopt the flexibility design promptly, not only can be applied to straddle type single track, also can be used to the vehicle of different motorcycle types such as city motor car, fast rail, different wheel bases to weigh.
Description
Technical Field
The utility model relates to a rail vehicle technical field that weighs especially relates to a rail vehicle four-point weighing device.
Background
The rail vehicle has the characteristics of large transportation amount, low energy consumption, high safety, convenience, all-weather transportation and the like, and is used as an important basic transportation facility in many countries in the world. With the vigorous development of the rail transit industry, the number of rail vehicles is continuously increased, and higher requirements are also put forward on the performance of the rail vehicles.
Rail vehicle weighing has two main purposes: 1. in order to uniformly distribute the weight of the vehicle body on each wheel and ensure the stability and safety of the driving process; 2. in order to control the weight of the body of the rail vehicle within a design range, the body needs to be weighed before the vehicle falls off a wheel.
In the traditional vehicle weighing method, a wagon balance type whole vehicle weighing method is generally adopted. The method has the following disadvantages and shortcomings: the weight bearing capacity of four corners of a train body can not be accurately measured, and the basis for the falling and leveling of the whole train after the bogie is assembled on the next step can not be provided, so that the dynamic balance of the rail vehicle can not be realized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a rail vehicle four-point weighing device, can realize weighing four-point synchronization of rail vehicle, can accurately survey automobile body four corners bearing weight.
In order to solve the technical problem, the utility model discloses a technical scheme be: the four-point weighing device for the rail vehicle comprises two groups of weighing mechanisms which are arranged in parallel and have the same structure, wherein the weighing mechanisms comprise: base, symmetry install a set of subassembly of weighing on base linear guide, the subassembly of weighing passes through the slider and is connected with linear guide, the subassembly of weighing includes: the device comprises a lifter, a load sensor arranged at the top end of the lifter, and a pressure head arranged on the load sensor.
In a preferred embodiment of the present invention, a set of hand wheel screw assemblies is further symmetrically installed on the base, the weighing assembly is fixedly connected with the hand wheel screw assemblies one-to-one, and the hand wheel screw assemblies are used for driving the weighing assembly to move horizontally back and forth on the linear guide rail.
In a preferred embodiment of the present invention, the weighing assembly further comprises a stand column, the stand column is fixedly connected with the hand wheel screw assembly and the slider respectively, and the elevator is installed on the stand column.
In a preferred embodiment of the present invention, the handwheel screw assembly includes: the vertical column is fixedly connected with the nut seat.
In a preferred embodiment of the present invention, the elevator comprises: the load sensor comprises a worm wheel and a threaded rod matched with the worm wheel, wherein the lower end of the threaded rod extends into the mounting hole of the stand column, a guide sleeve is mounted at the upper end of the threaded rod, and the load sensor is fixed on the guide sleeve.
In the utility model discloses a preferred embodiment, still be equipped with the scale on the base, scale parallel arrangement is by linear guide, be equipped with positioning groove on the bottom terminal surface of stand, be equipped with in the positioning groove and be used for the mark the stand is in the pointer of position on the linear guide.
In a preferred embodiment of the present invention, stoppers are further installed at both ends of the linear guide.
In a preferred embodiment of the present invention, the four-point weighing device includes a four-point weighing system, the four-point weighing system includes: the system comprises four load sensors, four transmitters, a PLC host and an HMI touch screen, wherein the load sensors are distributed at four weighing points of a rail vehicle body, the load sensors are connected with the transmitters in a one-to-one manner, the transmitters convert weight values collected by the load sensors into current signals and transmit the current signals to the PLC host, and a PLC analog quantity module in the PLC host performs digital-to-analog conversion on the current signals and transmits the converted data to the HMI touch screen for display.
In a preferred embodiment of the present invention, the four load cells are at the same level when weighing.
In a preferred embodiment of the present invention, the load sensor is a spoke-type load cell.
The utility model has the advantages that: the utility model discloses four-point weighing device of rail vehicle adopts two sets of weighing mechanism that the structure is the same, weighs the automobile body four corners by four weighing component synchronization, can improve measurement accuracy, and this weighing component can adjust relative interval on the guide rail simultaneously to can adjust the measurement height through the lift, adopt the flexible design promptly, not only can be applied to straddle type single track, also can be used to vehicle weighing of different motorcycle types such as city motor car, fast rail, different wheel bases;
the utility model discloses four-point weighing device still embeds there is four-point weighing system, and this system adopts four load sensor to gather four weighing points's of rail vehicle weight value, and the weight that shows four points of automobile body on output analog signal transmission HMI can be in order to realize weighing four-point synchronization of rail vehicle, can the accurate automobile body four corners bearing weight that surveys.
Drawings
FIG. 1 is a diagram of a four-point weighing apparatus for a railway vehicle according to a preferred embodiment of the present invention;
FIG. 2 is a schematic perspective view of the weighing mechanism of FIG. 1;
FIG. 3 is a schematic perspective view of the weighing assembly shown in FIG. 2;
FIG. 4 is a perspective view of the hand wheel screw assembly shown in FIG. 2;
FIG. 5 is a front view of the lift shown in FIG. 3;
FIG. 6 is a schematic circuit diagram of a four-point weighing system;
FIG. 7 is a power supply schematic of a four-point weighing system;
FIG. 8 is a diagram of the communication of a four-point weighing system;
the parts in the drawings are numbered as follows:
10. a weighing mechanism;
101. a base 1011, a linear guide rail 1012, a slide block 1013, a scale 1014 and a stop dog;
102. a weighing assembly, 1021, a lifter, 10211, a worm gear, 10212, a threaded rod, 10213, a guide sleeve, 1022, a load sensor, 1023, a pressure head, 1024, a stand column, 10241, a positioning groove, 10242 and a pointer;
103. a hand wheel screw rod component 1031, a hand wheel 1032, a screw rod 1033, a nut seat 1034 and a bearing seat.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1, an embodiment of the present invention includes:
the utility model provides a four-point weighing device of rail vehicle, comprises two sets of weighing machine 10 that the structure is the same of parallel fixation on the terrace, during the measurement of weighing, places the rail vehicle automobile body on four-point weighing machine 10, provides four weighing component by two sets of weighing machine 10 and weighs four points department of weighing of automobile body simultaneously.
Specifically, referring to fig. 2 and 3, the weighing mechanism 10 includes: the base 101, a set of weighing components 102 symmetrically installed on the linear guide 1011 of the base 101, the weighing components 102 are connected with the linear guide 1011 through a slider 1012, the weighing components 102 include: the vehicle body weighing device comprises a lifter 1021, a load sensor 1022 installed at the top end of the lifter 1021, and a pressure head 1023 installed on the load sensor 1022, wherein the pressure head 1023 is used for protecting the sensor, provides a certain contact area with a vehicle body, is in direct contact with the vehicle body, the weight of the vehicle body acts on the pressure head 1023, and then the load sensor 1022 acquires the weight value of a weighing point of the vehicle body.
A group of hand wheel screw rod assemblies 103 are further symmetrically mounted on the base 101, the weighing assemblies 102 are fixedly connected with the hand wheel screw rod assemblies 103 in a one-to-one mode, and the hand wheel screw rod assemblies 103 are used for driving the weighing assemblies 102 to horizontally move back and forth on the linear guide rails 1011.
With continued reference to fig. 3, the weighing assembly 102 further includes a post 1024, a bottom end surface of the post 1024 is fixed to the nut seat 1033 of the handwheel screw assembly 103, and the bottom end surface of the post 1024 is also fixedly connected to the slider 1012 mounted on the linear guide 1011. Further, referring to fig. 4, the handwheel screw assembly 103 includes: the hand wheel 1031 is manually rotated, the lead screw 1032 is driven to rotate by the hand wheel 1031, the nut seat 1033 matched with the lead screw 1032 is driven by the lead screw 1032 to move along the axial direction of the lead screw 1032, and then the upright 1024 fixedly connected with the nut seat 1033 is driven to move along the linear guide rail 1011 by the lead screw 1032.
Referring to fig. 5, the lifter 1021 is installed on the upper end surface of the column 1024, and the lifter 1021 includes: the load sensor comprises a worm wheel 10211 and a threaded rod 10212 matched with the worm wheel 10211, wherein the lower end of the threaded rod 10212 extends into a mounting hole of the upright post 1024, a guide sleeve 10213 is mounted at the upper end of the threaded rod 10212, and the load sensor 1022 is fixed on the guide sleeve 10213. The worm wheel 10211 mid-mounting has the rocker, and manual rotation rocker or by motor drive rocker, worm wheel 10211 transmission drives threaded rod 10212 and reciprocates, and then can adjust pressure head 1023, load sensor 1022's height, during weighing, respectively through lift 1021 adjusts four load sensor 1022 and four pressure heads 1023 to same level to can ensure the precision of weighing.
With continued reference to fig. 3, in this embodiment, a positioning groove 10241 is further disposed on the bottom end surface of the upright 1024, and a pointer 10242 for marking the position of the upright 1024 on the linear guide 1011 is installed in the positioning groove 10241.
Correspondingly, a scale 1013 is further installed on the base 101, the scale 1013 is installed beside the linear guide 1011 in parallel, and the position of the upright 1024 on the linear guide 1011 can be calibrated by the scale on the scale 1013 indicated by the pointer 10242, so that the distance between two opposite upright 1024 can be adjusted, and then the distance between two opposite pressing heads 1023 and the load sensor 1022 can be determined, so as to meet the weighing requirements of rail vehicles with different sizes and lengths.
Preferably, stoppers 1014 are further mounted at both ends of the linear guide 1011, which can be used to set the maximum distance between two columns 1024 on one hand, and can prevent the columns 1024 from derailing during movement on the other hand.
In this embodiment, load sensor 1022 adopts the 15 tons of C3 precision grade spoke formula weighing sensor of load, and it adopts full seal welding, has grease proofing, waterproof, corrosion-resistant characteristics, adopts the torsion ring structure simultaneously, can be used to multiple environment and abominable environmental occasion, is applicable to all kinds of platform scales and dynamic weighing system.
The pressure head 1023 is a cylindrical structure directly machined by 45 steel, the contact diameter of the top surface of the pressure head is 34mm, and the contact compressive stress is 110Mpa calculated according to 10 tons of force of single-point contact gravity of a vehicle body.
The lift 1021 adopts worm wheel, the threaded rod transmission structure that the screw elevator transformation formed, and the design standard is 10 tons of thrust types, and speed is that worm wheel one-turn threaded rod rises 0.25mm, according to automobile body single-point 10 tons of pressure, under the 0.3 condition of lift mechanical efficiency, calculates according to the virtual merit and needs the input torque to be 25.6Nm, can realize manual operation.
Referring to fig. 6, the utility model discloses rail vehicle four-point weighing device includes four-point weighing system, four-point weighing system includes: the system comprises four load sensors, four transmitters, a PLC host and an HMI touch screen, wherein the load sensors are distributed at four weighing points of a rail vehicle body, the load sensors are connected with the transmitters in a one-to-one manner, the transmitters convert weight values collected by the load sensors into current signals and transmit the current signals to the PLC host, and a PLC analog quantity module in the PLC host performs digital-to-analog conversion on the current signals and transmits the converted data to the HMI touch screen for display. The model of the PLC host is S7-226CN, and the HMI touch screen adopts a Siemens/smart 700 IE/7-inch touch screen.
With continued reference to FIG. 7, the four-point weighing system is powered by a power module, wherein the power module provides DC24V voltage to the transmitter in the sensor module and the transmitter provides DC10V voltage to the load cell; the power module provides DC24V power for the analog module of the PLC host and the HMI, but the PLC host power is AC220V power.
With continued reference to fig. 8, the four-point weighing system can be connected to a PC terminal, and the communication mode between the modules is: the communication mode of the PLC host and the PC is USB-PPI communication; the communication mode between the HMI and the PC is Ethernet communication; the PLC communicates with the HMI in an RS485 mode.
The specific working principle of the four-point weighing system is as follows: the weighing point of the vehicle body acts on the load weighing sensor, a millivolt-level signal output by the load sensor is converted by the transmitter and sent to the PLC analog quantity module, the PLC analog quantity module can process data according to the functional relation between the output signal of the load sensor and the weight and outputs the data to the HMI, the HMI can display the weight detected by the four load weighing sensors, and then the PC terminal adjusts the weight distribution of the vehicle body according to the data difference of each point.
In summary, the utility model adopts four load sensors to collect the weight values of four weighing points of the rail vehicle, and outputs analog quantity signals to the HMI to display the weight of four points of the vehicle body, thereby realizing the four-point synchronous weighing of the rail vehicle and accurately measuring the weight of four corners of the vehicle body;
the four-point weighing device for the rail vehicle adopts the flexible design characteristic, can adjust the weighing interval through the hand wheel screw rod assembly, and can adjust the height of the load sensor through the lifter, so that the device can be applied to straddle type single rails, and can also be used for weighing vehicles of different vehicle types and different wheelbases such as motor cars, fast rails and the like in the market; simultaneously, the four load sensors and the pressure head can be adjusted to be at the same horizontal height through the lifter, so that the weighing precision can be ensured.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a four weighing device of rail vehicle, includes the same weighing machine structure of two sets of structures, its characterized in that, weighing machine structure includes: base, symmetry install a set of subassembly of weighing on base linear guide, the subassembly of weighing passes through the slider and is connected with linear guide, the subassembly of weighing includes: the device comprises a lifter, a load sensor arranged at the top end of the lifter, and a pressure head arranged on the load sensor.
2. The four-point weighing device for the rail vehicle as claimed in claim 1, wherein a group of hand wheel screw assemblies are further symmetrically mounted on the base, the weighing assemblies are fixedly connected with the hand wheel screw assemblies one to one, and the hand wheel screw assemblies are used for driving the weighing assemblies to horizontally move back and forth on the linear guide rail.
3. The rail vehicle four-point weighing device of claim 2, wherein the weighing assembly further comprises an upright post, the upright post is fixedly connected with the hand wheel screw rod assembly and the sliding block respectively, and the elevator is mounted on the upright post.
4. The rail vehicle four-point weighing apparatus of claim 3, wherein the hand wheel screw assembly comprises: the vertical column is fixedly connected with the nut seat.
5. The railway vehicle four-point weighing apparatus of claim 3, wherein the elevator comprises: the load sensor comprises a worm wheel and a threaded rod matched with the worm wheel, wherein a guide sleeve is installed at the upper end of the threaded rod, and the load sensor is fixed on the guide sleeve.
6. The four-point weighing device for the rail vehicle as claimed in claim 3, wherein the base is further provided with a scale, the scale is arranged beside the linear guide rail in parallel, a positioning groove is arranged on the bottom end surface of the upright column, and a pointer for marking the position of the upright column on the linear guide rail is arranged in the positioning groove.
7. The four-point weighing device for the rail vehicle as claimed in any one of claims 1 to 6, wherein stoppers are further mounted at both ends of the linear guide rail.
8. The rail vehicle four-point weighing apparatus of claim 1, wherein the four-point weighing apparatus comprises a four-point weighing system comprising: the system comprises four load sensors, four transmitters, a PLC host and an HMI touch screen, wherein the load sensors are distributed at four weighing points of a rail vehicle body, the load sensors are connected with the transmitters in a one-to-one manner, the transmitters are used for converting weight values collected by the load sensors into current signals and transmitting the current signals to the PLC host, and a PLC analog quantity module in the PLC host is used for performing digital-analog conversion on the current signals and transmitting the converted data to the HMI touch screen for display.
9. The rail vehicle four-point weighing apparatus of claim 8, wherein the four load cells are at the same level when weighing.
10. The rail vehicle four-point weighing apparatus of claim 1, 8 or 9, wherein the load cell is a spoke-type load cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921539473.3U CN210321960U (en) | 2019-09-16 | 2019-09-16 | Four-point weighing device for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921539473.3U CN210321960U (en) | 2019-09-16 | 2019-09-16 | Four-point weighing device for railway vehicle |
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| CN210321960U true CN210321960U (en) | 2020-04-14 |
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| CN201921539473.3U Active CN210321960U (en) | 2019-09-16 | 2019-09-16 | Four-point weighing device for railway vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501059A (en) * | 2019-09-16 | 2019-11-26 | 中铁轨道交通装备有限公司 | A kind of 4 weighing devices of rail vehicle |
| CN113670515A (en) * | 2021-07-20 | 2021-11-19 | 中车青岛四方机车车辆股份有限公司 | Load sensor calibration device and calibration method |
-
2019
- 2019-09-16 CN CN201921539473.3U patent/CN210321960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501059A (en) * | 2019-09-16 | 2019-11-26 | 中铁轨道交通装备有限公司 | A kind of 4 weighing devices of rail vehicle |
| CN113670515A (en) * | 2021-07-20 | 2021-11-19 | 中车青岛四方机车车辆股份有限公司 | Load sensor calibration device and calibration method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201123 Address after: 4301, 43 / F, building 3, yard 1, East Automobile Museum Road, Fengtai District, Beijing 100071 Patentee after: CHINA RAILWAY HI-TECH INDUSTRY Corp.,Ltd. Patentee after: CHINA RAILWAY RAIL TRANSPORTATION EQUIPMENT Co.,Ltd. Address before: 210 000 Buyue Road, 29 Qiaolin Street, Pukou District, Nanjing City, Jiangsu Province, 12-253 Patentee before: CHINA RAILWAY RAIL TRANSPORTATION EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |