CN221006538U - Container trailer load measuring device and container trailer thereof - Google Patents
Container trailer load measuring device and container trailer thereof Download PDFInfo
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- CN221006538U CN221006538U CN202322243063.7U CN202322243063U CN221006538U CN 221006538 U CN221006538 U CN 221006538U CN 202322243063 U CN202322243063 U CN 202322243063U CN 221006538 U CN221006538 U CN 221006538U
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Abstract
The utility model discloses a container trailer load measuring device and a container trailer thereof, wherein the device comprises a plurality of deformation sensors, a sensor module and a sensor module, wherein the deformation sensors are used for collecting deformation quantity generated when a cross beam in a frame is loaded by a container; the data processing box is used for receiving the deformation data acquired by the deformation sensor and acquiring the weight value of the goods in the container according to the deformation data. And a deformation sensor is arranged at the position of the cross beam between the supporting locking seat and the longitudinal beam, the measuring point is positioned at the bearing point of the trailer to the container, and the measuring point which is different from the prior art is positioned on the leaf spring, so that the errors caused by individual difference, deformation, aging and fatigue of the leaf spring are eliminated, and the weight measurement precision is remarkably improved.
Description
Technical Field
The utility model relates to the technical field of transportation auxiliary equipment, in particular to a container trailer load measuring device and a container trailer thereof.
Background
The truck self-weighing can be used for monitoring the loading condition and calculating the freight rate, and can also be used for calculating the freight rate when the weighing precision is high enough. In addition, shipping containers must claim a weight with an allowable error of +/-5% or 1 ton (both of which are small), and currently the method is to drive the vehicle to a place where the wagon is located, and weigh the wagon using the wagon, which is a costly method that consumes time and fuel in addition to the cost of the weighing itself. If the self-weighing precision of the truck can meet the requirement, the truck has significance in improving the transportation efficiency and saving the cost.
The conventional truck self-weighing device generally utilizes the measurement of the deformation of a leaf spring to estimate the weight of goods, and the Chinese utility model of the publication No. CN212807269U provides a cargo box self-weighing device and a cargo vehicle thereof, wherein the device comprises: the motion sensing module is used for acquiring whether the container is in a moving state or not; the distance sensing module is used for acquiring the relative deformation of the leaf spring supporting the container in the vertical direction; and the control calculation unit is used for controlling the distance sensing module to acquire the relative deformation when the container is in a static state and acquire the weight of the container according to the relative deformation. The device can sense whether the container is in a moving state or not through the motion sensing module; when the container is in a static state, the distance sensing module is used for acquiring the relative deformation of the leaf spring supporting the container in the vertical direction, and the weight of the container is acquired through the relative deformation, so that the weight information of the container can be acquired in time. Another chinese utility model, such as bulletin number CN203601021U, provides an automatic weight limiting device for a truck, comprising: an ECU; the auxiliary weight-limiting throttle valve is arranged in the air inlet pipeline; the motor is connected with the ECU port; the output shaft of the motor is connected with a rocker arm of an auxiliary weight-limiting throttle valve; the weighing sensor is in wireless connection with the ECU; is arranged on the automobile leaf spring. The technical scheme can estimate the approximate weight of the goods, but the spring coefficient can be changed due to the fact that the steel plate springs of each steel plate spring have large differences and fatigue aging, so that the weighing precision is low.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a container trailer load measuring device and a container trailer thereof, which can realize automatic weighing of the container trailer, directly measure deformation of a stress point and reduce errors caused by inconsistent spring coefficients and fatigue aging.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
In a first aspect of the utility model, there is provided a container trailer load measuring device comprising:
The deformation sensors are used for collecting deformation generated when the cross beam in the frame is loaded by the container;
The data processing box is used for receiving the deformation data acquired by the deformation sensor and acquiring the weight value of the goods in the container according to the deformation data.
Further, the frame comprises a longitudinal beam, a plurality of cross beams are arranged on the longitudinal beam, supporting locking seats are respectively arranged at two ends of the cross beams, and the deformation sensor is arranged at the position of the cross beam between the supporting locking seats and the longitudinal beam.
Further, the deformation sensor at least comprises a first deformation sensor, a second deformation sensor, a third deformation sensor and a fourth deformation sensor, wherein the first deformation sensor and the second deformation sensor are symmetrically arranged on two sides of the longitudinal beam and on the same cross beam, and the third deformation sensor and the fourth deformation sensor are symmetrically arranged on two sides of the longitudinal beam and on the same cross beam at another position. Optionally, deformation sensors are symmetrically arranged at two ends of all the cross beams.
Specifically, the cross beams provided with the first deformation sensor and the second deformation sensor and the cross beams provided with the third deformation sensor and the fourth deformation sensor are respectively positioned at two ends of the longitudinal beam.
Further, the deformation sensor includes, but is not limited to, a stress sensor welded to the beam, a vibrating wire strain gauge welded to the beam, or a resistive strain gage bonded to the beam.
The deformation of the cross beam causes the change of stress, so that the output value of the stress sensor is changed; and the vibration wire strain gauge is welded on the cross beam, and the deformation of the cross beam causes the change of vibration wire frequency, so that the change of the output value of the vibration wire strain gauge is caused.
Further, the data processing box comprises a box body, an MCU processor and a power supply device, wherein the MCU processor and the power supply device are arranged in the box body, and the first deformation sensor, the second deformation sensor, the third deformation sensor and the fourth deformation sensor are connected with a digital-to-analog conversion module ADC integrated with the MCU processor.
Specifically, the first deformation sensor, the second deformation sensor, the third deformation sensor and the fourth deformation sensor respectively comprise a resistance strain gauge and three resistors, the resistance strain gauge and the three resistors form a bridge together, and the bridge is connected with a differential operational amplifier in parallel.
Optionally, the data processing box further comprises a display screen connected with the MCU processor and used for displaying weight information of the container in real time.
Optionally, the data processing box further comprises a loudspeaker connected with the MCU processor and used for prompting weight information of the container or sending overload prompt information.
Optionally, the data processing box further comprises a wireless communication device, which is used for establishing communication interaction with the mobile terminal and the cloud server. The wireless communication device is any one of a Bluetooth communication module, a wireless RF communication module, a Wi-Fi communication module and a 2G/3G/4G/5G mobile communication module. The Bluetooth 4.0 communication module is preferred, so that data communication with the mobile terminal is realized, and the mobile terminal can be connected with a cloud server or directly connected with the cloud server.
In a second aspect of the present utility model, a container trailer is provided, where the container trailer at least includes a vehicle head, a vehicle frame, and wheels, the vehicle frame is composed of a longitudinal beam and a plurality of cross beams on the longitudinal beam, and a bottom beam at the bottom of the container is correspondingly matched with supporting locking seats at two ends of the cross beams; and a plurality of deformation sensors of the container trailer load measuring device are attached to the cross beam.
By adopting the technical scheme, the container trailer load measuring device and the container trailer thereof are characterized in that the deformation sensor is arranged at the position of the cross beam between the supporting locking seat and the longitudinal beam, the container trailer is lifted up to empty the cabinet, loaded, returned to the cabinet and the like to cause the change of the front and rear cross beams, the change of the load is caused to cause the tiny deformation of the cross beam, the deformation of the cross beam is caused to cause the tiny change of the output signal of the deformation sensor, the signal amplifier amplifies the output signal of the deformation sensor, the digital-to-analog conversion module of the MCU processor converts the amplified electric signal into a signal value through analog-to-digital conversion, and the multiple signal values are combined into a value and converted into the load weight. The measuring point is positioned at the bearing point of the trailer to the container, and is different from the measuring point in the prior art, so that the errors caused by individual difference, deformation, aging and fatigue of the steel plate springs are eliminated, and the weight measurement precision is remarkably improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a three-dimensional structure of a container trailer according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a container trailer load measuring device according to an embodiment of the present utility model;
FIG. 3 is a schematic block diagram of a container trailer load measuring device according to an embodiment of the present utility model;
FIG. 4 is a schematic block diagram of a strain sensor circuit according to an embodiment of the present utility model;
In the figure, a 100-container trailer, a 110-locomotive, a 120-frame, 121-longitudinal beams, 122-cross beams and 123-support locking seats; 130-wheels, 140-containers, 141-bottom beams;
200-container trailer load measuring device, 210-first deformation sensor, 220-second deformation sensor, 230-third deformation sensor, 240-fourth deformation sensor, 250-data processing box, 251-box body, 252-MCU processor, 253-power supply device, 254-loudspeaker, 255-wireless communication device, 256-display screen.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 2 and 3, an embodiment of the present utility model provides a container trailer load measuring device 200, including:
The deformation sensors are used for collecting deformation quantity generated when the cross beam in the frame 120 is loaded by the container;
The data processing box 250 is configured to receive the deformation data collected by the deformation sensor, and obtain the weight value of the cargo in the container 140 according to the deformation data.
Specifically, the deformation sensor is arranged at the position between the rotary lock and the longitudinal beam of the front and the rear cross beams of the trailer and is used for detecting the deformation of the front and the rear cross beams due to the weight of the cargo. The deformation sensor can be a resistance strain gauge, and the resistance strain gauge is adhered to the deformation detection point of the front and rear cross beams by using glue or adhesive. The deformation sensor may also be a vibrating wire strain gauge or other sensor that can measure deformation.
As shown in fig. 2, the frame 120 includes a longitudinal beam 121, a plurality of cross beams 122 are disposed on the longitudinal beam 121, supporting locking seats 123 are disposed at two ends of the cross beams 122, and the deformation sensor is disposed at a position of the cross beam 122 between the supporting locking seats 123 and the longitudinal beam 121.
As shown in fig. 2 and 3, the deformation sensor at least includes a first deformation sensor 210, a second deformation sensor 220, a third deformation sensor 230, and a fourth deformation sensor 240, where the first deformation sensor 210 and the second deformation sensor 220 are symmetrically disposed on two sides of the longitudinal beam 121 and on the same cross beam 122, and the third deformation sensor 230 and the fourth deformation sensor 240 are symmetrically disposed on two sides of the longitudinal beam 121 and on the same cross beam 122 at another position. Optionally, a deformation sensor is symmetrically disposed at both ends of all the beams 122.
Specifically, the cross members 122 to which the first deformation sensor 210 and the second deformation sensor 220 are mounted and the cross members 122 to which the third deformation sensor 230 and the fourth deformation sensor 240 are mounted are respectively located at both ends of the longitudinal members 121.
Optionally, the deformation sensor includes, but is not limited to, a stress sensor welded to the beam, a vibrating wire strain gauge welded to the beam, or a resistive strain gage bonded to the beam.
The deformation of the cross beam causes the change of stress, so that the output value of the stress sensor is changed; and the vibration wire strain gauge is welded on the cross beam, and the deformation of the cross beam causes the change of vibration wire frequency, so that the change of the output value of the vibration wire strain gauge is caused.
As shown in fig. 3, the data processing box 250 includes a box body 251, an MCU processor 252 disposed in the box body 251, and a power device 253, where the first deformation sensor 210, the second deformation sensor 220, the third deformation sensor 230, and the fourth deformation sensor 240 are connected to a digital-to-analog conversion module ADC integrated with the MCU processor 252.
Optionally, the MCU processor 252 may be a device such as a single chip microcomputer, for example, a 32-bit single chip microcomputer STM32F072 of ST corporation is selected as the MCU processor, and the functional modules of the signal processing module of the device are implemented through the functions integrated by the single chip microcomputer STM32F072, and all the functional modules run on the STM32F072 single chip microcomputer, and the corresponding functions can be implemented by adopting the existing computer program, so that no improvement is needed in software. Meanwhile, the STM32F072 singlechip internally integrates a 12-bit ADC (analog-to-digital conversion device) to realize the function of the ADC device 14 of the device.
As shown in fig. 3 and 4, the first deformation sensor 210, the second deformation sensor 220, the third deformation sensor 230, and the fourth deformation sensor 240 respectively include a resistive strain gauge and three resistors, the resistive strain gauge and the three resistors together form a bridge, and the bridge is connected in parallel with a differential operational amplifier.
Optionally, the data processing box 250 further includes a display screen 256 connected to the MCU processor 252 for displaying weight information of the container 140 in real time.
Optionally, the data processing box 250 further includes a speaker 254 connected to the MCU processor 252 for prompting weight information of the container 140 or issuing overload prompting information.
Optionally, the data processing box 250 further includes a wireless communication device 255 for establishing communication interaction with the mobile terminal and the cloud server. The wireless communication device 255 is any one of a Bluetooth communication module, a wireless RF communication module, a Wi-Fi communication module, and a 2G/3G/4G/5G mobile communication module. The Bluetooth 4.0 communication module is preferred, so that data communication with the mobile terminal is realized, and the mobile terminal can be connected with a cloud server or directly connected with the cloud server.
The embodiment of the utility model also provides a container trailer 100, the container trailer 100 at least comprises a vehicle head 110, a vehicle frame 120 and wheels 130, the vehicle frame 120 is composed of a longitudinal beam 121 and a plurality of cross beams 122 on the longitudinal beam 121, and a bottom beam 141 at the bottom of the container 140 is correspondingly matched with supporting locking seats 123 at two ends of the cross beams 122; a plurality of strain sensors of the container trailer load measuring device 200 are attached to the cross member 122.
The container trailer 100 is used for carrying a container, is unpowered, is driven by a traction vehicle head, and is provided with rotary locks at the tail ends of front and rear cross beams of the trailer for locking the container to prevent the container from falling off. The contact part of the container and the trailer is two longitudinal beams of the container, and the rest parts of the container are not contacted with the trailer, so that the gravity supporting point of the trailer to the container is positioned at the tail ends of the front and rear cross beams, namely the twist lock position. By utilizing the stress characteristics, the sensor is arranged between the rotary lock of the front and rear cross beams of the trailer and the longitudinal beam so as to measure the deformation of the cross beam generated under the gravity of the container and achieve the purpose of measuring the load.
In this embodiment, four sensors are installed on the inner sides of the front and rear cross beams of the container trailer, as shown in fig. 4, the sensors are implemented by using resistance strain gauges, after polishing and cleaning the surface of the cross beam, the resistance strain gauges are adhered to the cross beam by using glue, and then the protection glue is coated for protection. A resistance strain gauge and three resistors together form a bridge, four bridges are used in the embodiment, deformation of four stress points of a front beam and a rear beam is converted into a tiny electric signal, and the electric signal is sent to a differential operational amplifier for signal amplification. The four amplified signals are sent to the digital-to-analog conversion module through the cable. The digital-to-analog conversion module is realized by an MCU (micro controller) integrated with an ADC (analog-to-digital converter), the ADC is provided with four channels, the signals of the four sensors are sampled in turn and converted into signal values, the MCU adds the four signal values to obtain a total signal value, and the signal values are converted into cargo weight through a table lookup or conversion formula. The corresponding relation table of the signal values and the weight of the cargoes can be established by loading the cargoes with known weight to obtain the corresponding signal values. The conversion formula is to measure the signal values corresponding to a plurality of groups of different cargo weights, and a fitting curve function is obtained by adopting a curve fitting method, and the function is used as the conversion formula. As shown in table 1, the corresponding relation table of the signal values and the weight of the cargo is assumed that the four signal values are 800, 900 and 1000 respectively, the four signal values are 3600, and the weight of the cargo is 4 tons by looking up the table.
Table 1 correspondence table of signal values and cargo weights
| Signal value | Weight of goods | Signal value | Weight of goods |
| 1000 | 1 Ton of | 7200 | 8 Ton of |
| 1900 | 2 Ton of | 8100 | 9 Tons |
| 2800 | 3 Ton | 9000 | 10 Tons |
| 3600 | 4 Ton | 17000 | 20 Tons |
| 4500 | 5 Tons | 34000 | 30 Tons |
| 5400 | 6 Ton of | ||
| 6300 | 7 Ton of |
This container trailer load measuring device and container trailer thereof sets up deformation sensor in the crossbeam position between supporting locking seat and longeron, and the container trailer is carried the empty cabinet of cabinet, is loaded, action such as returning the cabinet arouses the change of front and back crossbeam bearing, and the bearing changes and arouses the tiny deformation of crossbeam, and deformation of crossbeam arouses deformation sensor output signal and takes place tiny change, and signal amplifier amplifies deformation sensor output's signal, and the digital-to-analogue conversion module of MCU treater passes through analog-digital conversion with the signal after the amplification, converts signal value, and a numerical value is consolidated to multichannel signal value, converts into load weight again. The measuring point is positioned at the bearing point of the trailer to the container, and is different from the measuring point in the prior art, so that the errors caused by individual difference, deformation, aging and fatigue of the steel plate springs are eliminated, and the weight measurement precision is remarkably improved.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (10)
1. A container trailer load measuring device, comprising:
The deformation sensors are used for collecting deformation generated when the cross beam in the frame is loaded by the container;
The data processing box is used for receiving the deformation data acquired by the deformation sensor and acquiring the weight value of the goods in the container according to the deformation data.
2. The container trailer load measuring device according to claim 1, wherein the frame comprises a longitudinal beam, a plurality of cross beams are arranged on the longitudinal beam, supporting locking seats are respectively arranged at two ends of the cross beams, and the deformation sensor is arranged at a cross beam position between the supporting locking seats and the longitudinal beam.
3. The container trailer load measuring device of claim 2, wherein the deformation sensor comprises at least a first deformation sensor, a second deformation sensor, a third deformation sensor and a fourth deformation sensor, the first deformation sensor and the second deformation sensor are symmetrically arranged on two sides of the longitudinal beam and on the same cross beam, and the third deformation sensor and the fourth deformation sensor are symmetrically arranged on two sides of the longitudinal beam and on the same cross beam at another position.
4. A container trailer load measuring device as claimed in claim 3 wherein said deformation sensor comprises, but is not limited to, a stress sensor welded to the cross beam, a vibrating wire strain gauge welded to the cross beam or a resistive strain gauge bonded to said cross beam.
5. The container trailer load measuring device according to claim 3, wherein the data processing box comprises a box body, an MCU processor and a power supply device, wherein the MCU processor and the power supply device are arranged in the box body, and the first deformation sensor, the second deformation sensor, the third deformation sensor and the fourth deformation sensor are connected with a digital-to-analog conversion module ADC integrated with the MCU processor.
6. The container trailer load measuring device of claim 5, wherein the first deformation sensor, the second deformation sensor, the third deformation sensor, and the fourth deformation sensor each comprise a resistive strain gauge and three resistors, the resistive strain gauge and the three resistors together form a bridge, and the bridge is connected in parallel with a differential operational amplifier.
7. The container trailer load measuring device of claim 5, wherein the data processing box further comprises a display screen coupled to the MCU processor for displaying weight information of the container in real time.
8. The container trailer load measurement apparatus of claim 5 wherein the data processing box further comprises a speaker coupled to the MCU processor for prompting weight information of the container or signaling overload.
9. The container trailer load measurement apparatus of claim 5, wherein the data processing box further comprises a wireless communication device for establishing communication interaction with a mobile terminal, a cloud server; the wireless communication device is any one of a Bluetooth communication module, a wireless RF communication module, a Wi-Fi communication module and a 2G/3G/4G/5G mobile communication module.
10. The container trailer is characterized by at least comprising a locomotive, a frame and wheels, wherein the frame consists of a longitudinal beam and a plurality of cross beams on the longitudinal beam, and a bottom beam at the bottom of the container is correspondingly matched with supporting locking seats at two ends of the cross beams; a plurality of deformation sensors of the container trailer load measuring device according to any one of claims 1 to 9 are attached to the cross beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243063.7U CN221006538U (en) | 2023-08-20 | 2023-08-20 | Container trailer load measuring device and container trailer thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243063.7U CN221006538U (en) | 2023-08-20 | 2023-08-20 | Container trailer load measuring device and container trailer thereof |
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| CN221006538U true CN221006538U (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322243063.7U Active CN221006538U (en) | 2023-08-20 | 2023-08-20 | Container trailer load measuring device and container trailer thereof |
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| CN (1) | CN221006538U (en) |
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- 2023-08-20 CN CN202322243063.7U patent/CN221006538U/en active Active
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