WO2013139284A1 - 一种车辆动态称重装置 - Google Patents

一种车辆动态称重装置 Download PDF

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Publication number
WO2013139284A1
WO2013139284A1 PCT/CN2013/072975 CN2013072975W WO2013139284A1 WO 2013139284 A1 WO2013139284 A1 WO 2013139284A1 CN 2013072975 W CN2013072975 W CN 2013072975W WO 2013139284 A1 WO2013139284 A1 WO 2013139284A1
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WIPO (PCT)
Prior art keywords
weighing
vehicle
weighing platform
sensing
road surface
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PCT/CN2013/072975
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English (en)
French (fr)
Inventor
张英杰
李源
祝涛
Original Assignee
北京盘天科技发展有限公司
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Application filed by 北京盘天科技发展有限公司 filed Critical 北京盘天科技发展有限公司
Publication of WO2013139284A1 publication Critical patent/WO2013139284A1/zh

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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
    • G01G19/03—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 during motion

Definitions

  • the present invention relates to a vehicle dynamic weighing device, and belongs to the technical field of weighing. Background technique
  • the vehicle weighing device used in the early days is a static weighing device.
  • the vehicle needs to be driven to the weighing device first, and the reading can be accurately displayed after the vehicle is stabilized on the weighing platform, which leads to the weighing speed. Very slow, in the case of a large traffic volume, often caused a lot of vehicles to wait, resulting in road congestion.
  • the working principle of the dynamic weighing device is as follows: After the dynamic vehicle is passed through the weighing platform with the sensor installed, the sensor senses the pressure signal of the dynamic vehicle, and then the processor performs a series of analysis and processing, and finally calculates the vehicle. Dynamic weighing values. It should be noted that, whether it is a static weighing device or a dynamic weighing device, the weighing platform is mostly installed in the groove of the road foundation, and the sensor is disposed below the weighing platform, and the sensing principle of the sensor is used.
  • the weighing platform In the case of weighing, in order to avoid the distortion of the sensing data caused by the axle load from the vehicle being dispersed to the road surface around the weighing platform, the weighing platform and the groove of the pavement foundation
  • the sensing gap is reserved on the inner wall in the direction of the vehicle row; and due to the existence of the sensing gap, the vehicle is easy to give the weighing platform a horizontal force of the wheel when passing through the weighing platform and [large] Vertical impact force, the wheel load horizontal force will cause the weighing platform to move, in order to balance the wheel load horizontal force, the lower part of the weighing platform must be provided with a horizontal limiter, resulting in a complicated device;
  • the force causes the weighing table to vibrate up and down, affecting the measurement accuracy, in order to avoid the above-mentioned vertical impact force
  • the speed of the vehicle must be reduced, so that the prior art weighing device is not suitable for weighing when the vehicle is traveling at a high speed.
  • a dynamic weighing device commonly used in the prior art has a structure as shown in FIG. 1 , and the dynamic weighing device includes a groove reserved on the road surface foundation 1 for mounting the weighing platform 2 and The table top of the weighing platform 2 is located at the same level as the road surface foundation, and the weighing platform 2 forms a sensing gap 3 with the inner wall of the groove along the direction of the vehicle after installation; the axle load is P
  • the wheel load horizontal force N is such that the weighing platform 1 is within the sensing gap 3 Horizontally moving along the traveling direction of the vehicle.
  • the horizontal stopper 4 installed at the bottom of the weighing platform 2 provides the weighing platform 2 with a horizontal limiting force Q, and the horizontal limiting force Q and The wheel load horizontal force N is a pair of balance forces, as shown in FIG. 2; meanwhile, the load cell 5 mounted on the weighing platform 2 senses the axle load P of the vehicle and uses the sensor vertical load Rl The R2 outputs a signal to complete the dynamic weighing.
  • the above-mentioned dynamic weighing device still has the following defects during use:
  • the horizontal force of the wheel load is very large, so that the instantaneous horizontal limit force cannot be balanced with the horizontal force of the wheel load, thereby easily pushing the whole
  • the weighing platform exceeds the sensing gap and violently collides with the inner wall of the slot.
  • Multiple uses, multiple impacts reduce the service life of the weighing platform; meanwhile, since the weighing platform 2 is installed and described
  • the inner wall of the slot along the direction of the vehicle row forms a sensing gap, so that the vertical impact force of the weighing platform is increased when the vehicle passes, thereby causing severe vibration of the weighing platform and interfering with the signal output of the weighing sensor.
  • the first technical problem to be solved by the present invention is to overcome the disadvantages of the prior art dynamic weighing device that have low measurement accuracy and are generally used for high-speed weighing, thereby providing a high measurement accuracy. And can be universally applied to high-speed weighing dynamic weighing devices.
  • the present invention provides a vehicle dynamic weighing device, comprising a weighing platform installed in a mounting groove of a road foundation, the table top being at the same level as the road surface foundation; at least two weighing sensors And fixed to the weighing platform for sensing and transmitting the weight of the dynamic vehicle that the weighing platform is subjected to; a sensing cavity is disposed inside the weighing platform along the direction of the vehicle;
  • the heavy table has no gap with the inner wall of the mounting groove of the road surface along the direction of the vehicle.
  • the sensing cavity is disposed parallel to the pavement foundation.
  • the sensing cavity is rectangular.
  • the load cells are two, respectively mounted above the second sensing cavity.
  • the vehicle dynamic weighing device provided by the present invention has the following advantages:
  • the vehicle dynamic weighing device provided by the present invention comprises a weighing platform installed in a mounting groove of a road foundation, and the table top is at the same level as the road surface foundation; at least two a load cell fixed to the weighing platform for sensing and transmitting the weight of the dynamic vehicle that the weighing platform is subjected to; a sensing cavity is disposed inside the weighing platform along the direction of the vehicle; There is no gap between the weighing platform and the inner wall of the mounting groove of the road surface in the direction of the vehicle.
  • the vehicle dynamic weighing device provided by the invention has a sensing cavity disposed along the direction of the vehicle inside the weighing platform, so that the weighing sensor does not transmit the perceived force to the road foundation when weighing Therefore, the dynamic weighing device of the present invention does not need to provide a sensing gap between the circumference of the weighing platform and the mounting groove of the road surface foundation; also because of this, the dynamic weighing device of the present invention can weigh the weighing And a gap between the table and the inner wall of the mounting groove of the road surface along the direction of the roadway, that is, the inner wall of the weighing platform and the mounting groove of the road surface along the direction of the roadway There is no sensing gap in the prior art, so that the weighing platform does not collide with the inner wall of the groove of the road foundation due to the horizontal force of the wheel at the high speed of the vehicle, thereby improving The service life of the weighing platform.
  • the vertical impact force from the vehicle does not cause a severe vibration of the weighing platform when the impact is hit by the weighing platform, thereby avoiding the high-speed driving of the vehicle in the prior art.
  • the vertical impact force causes the weighing accuracy caused by the severe vibration of the weighing platform to decrease, so that the weighing accuracy of the vehicle dynamic weighing device of the present invention is not affected by the vehicle speed; meanwhile, since there is no sensing gap , The dynamic weighing device can shield the reading of the horizontal force when weighing, without being disturbed by the horizontal force, thereby further preventing the reading of the weighing sensor from being affected by the vehicle speed, and further, the dynamic weighing of the invention When the device is suitable for high-speed weighing, the accuracy of weighing can also be guaranteed.
  • there is no sensing gap there is no need to set a horizontal limiter for horizontal limit, which simplifies the device and saves manufacturing costs and installation costs.
  • FIG. 1 is a vehicle dynamic weighing device provided by the prior art. Schematic diagram of the structure
  • FIG. 2 is a schematic view showing the force of the vehicle dynamic weighing device shown in FIG. 1;
  • FIG. 3 is a schematic structural view of a vehicle dynamic weighing device provided by the present invention
  • FIG. 4 is a schematic diagram of the force of the vehicle dynamic weighing device shown in FIG. 3;
  • the embodiment provides a vehicle dynamic weighing device, comprising a weighing platform 2 installed in a mounting groove of a pavement foundation 1 , the countertop of which is located at the same level as the pavement foundation 1; at least two scales a weight sensor 5 mounted and fixed to the weighing platform 2 for sensing and transmitting the weight of the dynamic vehicle that the weighing platform 2 is subjected to; and a sensing device disposed along the direction of the vehicle inside the weighing platform 2
  • the cavity 6; the weighing platform 2 has no gap with the inner wall of the mounting groove of the road surface 1 along the direction of the vehicle.
  • the weighing platform 2 has no gap with the inner wall of the mounting groove of the road surface 1 along the direction of the vehicle row, which means that both ends of the weighing platform in the direction of the vehicle row are Inside the installation slot There are no gaps in the wall.
  • the number of the load cells 5 is not particularly limited in the range of more than two. In the present embodiment, in order to save costs, the load cells 5 are two. In order to optimize the measurement accuracy, two of the load cells 5 are mounted above the second sensing chamber 7, respectively.
  • the second sensing chamber 7 is vertically connected to the road surface base 1 at both ends of the sensing chamber 6 along the vehicle traveling direction. It should be noted that, in the present invention, whether the sensing cavity 6 is disposed in parallel with the road surface base 1 is not strict, and the sensing cavity 6 may be disposed in parallel with the road surface foundation 1 or may be opposite to the The pavement foundation 1 forms an oblique angle. In the present embodiment, in order to facilitate manufacturing and cost saving, preferably, the sensing chamber 6 is disposed parallel to the road surface foundation 1. It should be noted that, in the present invention, the shape of the sensing cavity 6 and the second sensing cavity 7 are not strictly limited, and the sensing cavity 6 may be rectangular or curved or other shapes.
  • the sensing chamber 6 and the second sensing chamber 7 are both arranged in a rectangular shape.
  • the vehicle dynamic weighing device provided by the embodiment is used for weighing. When the tire of the running vehicle runs to the table surface of the weighing platform 2, as shown in FIG. 2, the load cell 5 senses the dynamic vehicle.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Traffic Control Systems (AREA)

Abstract

一种车辆动态称重装置，包括称重台（2），安装在路面基础（1）的安装槽内，其台面与所述路面基础（1）位于同一水平面；至少两个称重传感器（5），与所述称重台（2）安装固定，用于感受并传输所述称重台（2）承受的动态车辆的重量；所述称重台（2）的台面的下部具有一个传感腔（6），所述传感腔（6）沿着车辆行驶方向设置，所述传感腔（6）上沿着所述车辆行驶方向的前后两侧分别安装有所述称重传感器（5）；所述称重台（2）与所述路面基础（1）的所述安装槽的沿着车辆行驶方向的内壁没有缝隙。

Description

一种车辆动态称重装置 技术领域 本发明涉及一种车辆动态称重装置， 属于称重技术领域。 背景技术
为遏制超载运输，近年来人们在高速公路、桥梁等的入口处设置收费台， 釆用记重收费， 即按照车辆通过时的重量来进行收费， 而记重收费的基础设 施就是车辆称重装置。早期使用的车辆称重装置是静态称重仪， 该种称重装 置在使用时需要车辆先行驶到称重装置上，待车辆在秤台上稳定之后才能够 精确显示读数， 这导致称重速度非常緩慢， 在车流量较大的情况下， 经常造 成很多车辆的等候， 导致道路拥堵。 为了避免静态称重装置的上述缺陷， 车辆动态称重装置应运而生。 动态 称重装置的工作原理是： 动态行使的车辆经过安装有传感器的称重台后，传 感器感受到动态车辆的压力信号， 再由处理器进行一系列的分析、 处理， 最 后计算得出车辆的动态称重数值。 需要说明的是， 不论是静态称重装置还是动态称重装置， 称重台大多都 安装在路面基础的凹槽内，传感器设置于所述称重台的下方， 在利用传感器 的传感原理进行称量时，为了避免来自于车辆的轴载被分散到所述称重台周 边的路面基础而使传感数据大大失真的情况发生，所述称重台与所述路面基 础的凹槽的沿着车行方向的内壁都预留传感间隙；而由于所述传感间隙的存 在，所述车辆在通过所述称重台时容易给所述称重台一个轮载水平力及 [艮大 的垂直冲击力， 所述轮载水平力会促使所述称重台移动， 为了平衡所述轮载 水平力， 所述称重台的下部必须设置水平限位器， 导致装置复杂； 而垂直冲 击力使得称台上下震动， 影响测量精度， 为了避免所述垂直冲击力的上述不 利影响， 必须降低车辆行驶速度，从而使得现有技术的称重装置不适于车辆 高速行驶时的称量。 例如， 现有技术中常用的动态称重装置， 其结构如图 1所示， 该动态称 重装置包括预留在路面基础 1上的凹槽，所述凹槽用于安装称重台 2并使所 述称重台 2的台面与所述路面基础位于同一水平面，所述称重台 2在安装后 与所述 槽的沿着车行方向的内壁形成传感间隙 3; 轴载为 P的车辆动态行 驶到所述称重台 2时， 施加给所述称重台 2—个轮载水平力 N， 所述轮载水 平力 N使得所述称重台 1在所述传感间隙 3 内沿着车辆的行驶方向水平移 动， 此时， 安装在所述称重台 2底部的水平限位器 4为所述称重台 2提供一 个水平限位力 Q , 所述水平限位力 Q与所述轮载水平力 N是一对平衡力， 如 图 2所示； 同时， 安装在所述称重台 2上的称重传感器 5感知所述车辆的轴 载 P，并以传感器垂直荷载 Rl、 R2的方式输出信号， 从而完成动态称重。 但是， 上述动态称重装置在使用过程中仍然存在以下缺陷： 车辆在高速行驶时，轮载水平力非常大，使得瞬间的水平限位力不能与 所述轮载水平力平衡，从而容易推动整个称重台超越传感间隙而与所述 槽 的内壁猛烈撞击，多次使用，多次撞击会降低所述称重台的使用寿命； 同时， 由于所述称重台 2 在安装后与所述 槽的沿着车行方向的内壁形成传感间 隙，从而使得车辆通过时给所述称重台 艮大的垂直冲击力，从而引发所述称 重台的剧烈震动， 干扰称重传感器的信号输出， 降低称量精度， 而在车辆高 速行驶时， 所述垂直冲击力对称重精度的不良影响就更大。 发明内容 因此，本发明所要解决的第一个技术问题在于克服现有技术中动态称重 装置的测量精度较低并且 4艮难普遍地用于高速称量的缺陷，从而提供一种测 量精度高且能普遍适用于高速称量的动态称重装置。
为此， 本发明提供一种车辆动态称重装置， 包括称重台， 安装在路面基 础的安装槽内， 其台面与所述路面基础位于同一水平面； 至少两个称重传感 器， 与所述称重台安装固定， 用于感受并传输所述称重台承受的动态车辆的 重量； 在所述称重台内部沿着车行方向的设置有传感腔； 所述称重台与所述 路面基础的所述安装槽的沿着车行方向的内壁没有缝隙。 所述传感腔平行于所述路面基础设置。 所述传感腔为矩形。 在所述传感腔沿所述车行方向的两端朝向所述路面基础分别设置第二传 感腔， 所述第二传感腔垂直于所述路面基础， 且与所述传感腔相连通。 所述称重传感器为两个， 分别安装在所述第二传感腔上方。
所述第二传感腔为矩形。 本发明提供的车辆动态称重装置具有以下优点： 本发明提供的车辆动态称重装置， 包括称重台， 安装在路面基础的安装 槽内， 其台面与所述路面基础位于同一水平面； 至少两个称重传感器， 与所 述称重台安装固定， 用于感受并传输所述称重台承受的动态车辆的重量； 在 所述称重台内部沿着车行方向设置有传感腔； 所述称重台与所述路面基础的 所述安装槽的沿着车行方向的内壁没有缝隙。 本发明提供的车辆动态称重装 置， 在所述称重台内部沿着车行方向设置有传感腔， 这使得所述称重传感器 在称重时不会将其感知的力传递给路面基础， 从而使得本发明的动态称重装 置不需要在称重台的周缘和路面基础的安装槽之间设置传感间隙； 也正是由 于此， 本发明的动态称重装置可以将所述称重台与所述路面基础的所述安装 槽的沿着车行方向的内壁之间设置成无缝隙， 即所述称重台与所述路面基础 的所述安装槽的沿着车行方向的内壁之间没有现有技术中的所述传感间隙， 进而使得所述称重台在车辆高速的情况下， 不会因为轮载水平力而与所述路 面基础的凹槽的内壁撞击， 从而提高了所述称重台的使用寿命。 也正是由于 不存在所述传感间隙， 来自与车辆的所述垂直冲击力对所述称重台冲击时不 会造成称重台剧烈震动， 从而避免了现有技术中车辆高速行驶时因所述垂直 冲击力引发的所述称重台剧烈震动而造成的称重精度的下降， 使得本发明的 车辆动态称重装置的称量精度不受车速的影响； 同时， 由于不存在传感间隙， 所述动态称重装置在称重时可以屏蔽水平力的读数， 不会受到水平力的干扰， 从而进一步使得所述称重传感器的读数不会受到车速的影响， 进而， 本发明 的动态称重装置适用于高速称量时， 也能够保证称量的准确性。 另外， 也是 由于不存在传感间隙， 不需要设置水平限位器进行水平限位， 简化了装置， 节约了制造成本和安装成本。 附图说明
为了使本发明的内容更容易被清楚的理解， 下面根据本发明的具体实施 例并结合附图， 对本发明作进一步详细的说明， 其中 图 1是现有技术提供的一种车辆动态称重装置的结构示意图；
图 2是图 1所示的车辆动态称重装置的受力示意图；
图 3是本发明提供的车辆动态称重装置的结构示意图； 图 4是图 3所示的车辆动态称重装置的受力示意图； 图中附图标记表示为：
1-路面基础； 2-称重台； 3-传感间隙； 4-水平限位器； 5-称重传感器； 6-传感腔； 7-第二矩形传感腔； P-轴载； Q-水平限位力； N-轮载水平力； Rl、 R2-传感器垂直荷载； Ql、 Q2-传感器水平荷载。 具体实施方式
下面结合附图和具体的实施例对本发明的优选技术方案进行详细地说 明。
如图 1所示， 本实施例提供一种车辆动态称重装置， 包括称重台 2 , 安装 在路面基础 1的安装槽内， 其台面与所述路面基础 1位于同一水平面； 至少 两个称重传感器 5 , 与所述称重台 2安装固定， 用于感受并传输所述称重台 2 承受的动态车辆的重量；在所述称重台 2的内部沿着车行方向设置有传感腔 6； 所述称重台 2与所述路面基础 1 的所述安装槽的沿着车行方向的内壁没有缝 隙。 本发明中， 所述称重台 2与所述路面基础 1的所述安装槽的沿着车行方 向的内壁没有缝隙， 是指所述称重台在车行方向的两端都与所述安装槽的内 壁没有缝隙。 上述方案是本发明的核心技术方案， 为了进一步优化本发明的技术效果， 可以在核心技术方案的基础上进行进一步的优化。 本发明中， 所述称重传感器 5的个数在大于两个的范围内不做特殊要求， 在本实施例中， 为节约成本， 所述称重传感器 5为两个。 为了优化测量精度， 两个所述称重传感器 5分别安装在所述第二传感腔 7的上方。 在本实施例中， 为了增加测量精度， 在所述传感腔 6 的沿着所述车行方 向的两端上朝向所述路面基础 1分别垂直连通设置有第二传感腔 7。 需要说明的是， 本发明中， 所述传感腔 6是否与所述路面基础 1平行设 置并不做严格， 所述传感腔 6可以与所述路面基础 1平行设置， 也可以相对 于所述路面基础 1形成一个倾斜角度。 在本实施例中， 为了方便制造， 节约成本， 优选地， 所述传感腔 6 平行 于所述路面基础 1设置。 值得注意的是， 本发明中， 所述传感腔 6与所述第二传感腔 7的形状也 不做严格限制， 所述传感腔 6 可以是矩形， 也可以是弧形或者其他形状， 只 要能够满足设置所述传感腔 6时能够保证来自于动态车辆的轴载 P不被分散 到所述路面基础的所有所述传感腔 6的形状都在本发明的保护范围之内。 在本实施例中， 为了便于制造节约成本， 所述传感腔 6 和所述第二传感 腔 7都设置为矩形。 运用本实施例提供的车辆动态称重装置进行称重， 当行驶中的车辆的轮 胎运行到所述称重台 2的台面上时， 见图 2 , 所述称重传感器 5感受到动态车 辆的轴载 P及传感器水平载荷 Ql、 Q2 , 此时， 由于所述称重台 2与所述路面 基础 1 的所述安装槽的沿着车行方向的内壁没有缝隙， 即两者之间不存在传 感间隙， 因此， 所述称重传感器 5不会输出传感器水平载荷 Ql、 Q2的信号， 而只以传感器垂直荷载 Rl、 R2的方式输出车辆轴载 P的信号，完成一次称重， 上述称重过程不需要车辆停止或减速。
显然， 上述实施例仅仅是为清楚地说明所作的举例， 而并非对实施方式 的限定。 对于所属领域的普通技术人员来说， 在上述说明的基础上还可以做 出其它不同形式的变化或变动。 这里无需也无法对所有的实施方式予以穷举。 而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之。

Claims

权 利 要 求 书
1. 一种车辆动态称重装置， 包括
称重台 （2)， 安装在路面基础 （1 ) 的安装槽内， 其台面与所述路面基础 （1 ) 位于同一水平 面；
至少两个称重传感器 （5 )， 与所述称重台 （2) 安装固定， 用于感受并传输所述称重台 （2) 承受的动态车辆的重量；
其特征在于：
在所述称重台 （2) 的内部沿着车行方向设置有传感腔 （6);
所述称重台 （2) 与所述路面基础 （1 ) 的所述安装槽的沿着车行方向的内壁没有缝隙。
2. 根据权利要求 1所述的车辆动态称重装置， 其特征在于： 所述传感腔 （6) 平行于所述路 面基础 （1 ) 设置。
3. 根据权利要求 1或 2所述的车辆动态称重装置， 其特征在于： 所述传感腔 （6) 为矩形。
4. 根据权利要求 1-3中任一项所述的车辆动态称重装置， 其特征在于： 在所述传感腔 （6 ) 沿所述车行方向的两端朝向所述路面基础 （1 ) 分别设置第二传感腔 （7)， 所述第二传感腔
(7) 垂直于所述路面基础 （1 )， 且与所述传感腔 （6) 相连通。
5. 根据权利要求 1-4中任一项所述的车辆动态称重装置， 其特征在于： 所述称重传感器 (5 ) 为两个， 分别安装在所述第二传感腔 （7) 上方。
6. 根据权利要求 4或 5所述的车辆动态称重装置， 其特征在于： 所述第二传感腔 （7) 为矩 形。
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