Road weighing device

Abstract

The utility model relates to the technical field of road weighing, in particular to a road weighing device, which comprises a foundation pit arranged on a lane, a weighing body arranged in the foundation pit, and a weighing sensor arranged at the bottom of the weighing body, the surface of the weighing body is flush with the road surface of the lane, and the output end of the weighing sensor is coupled with a controller MCU (Microprogrammed Control Unit). The output end of the controller MCU is coupled with a display screen used for displaying the weighing result, and the lane is provided with a plurality of first detection assemblies used for detecting whether a vehicle is arranged at the edge of the scale body or not on the periphery of the scale body. A first detection assembly used for detecting whether a vehicle is placed on the scale body is arranged on the input end of the controller MCU, a second detection assembly used for detecting whether the vehicle is placed on the scale body is arranged on the two sides of a lane in the vehicle advancing direction, the input end of the controller MCU is coupled with a switch assembly which is simultaneously coupled with the output ends of the first detection assembly and the second detection assembly, the vehicle is weighed when being placed on the scale body, and the weighing accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road weighing, in particular to a road weighing device. Background Art

[0002] The primary weighing device in road weighing systems is a floor scale, also known as a truck scale or a large scale mounted on the ground. It is typically used to measure the tonnage of truck cargo. It is the primary weighing device used by factories, mines, businesses, and other organizations for bulk cargo measurement.

[0003] A scale can weigh vehicles moving on the road or parked on it. To improve the accuracy of vehicle weighing results and reduce scale deformation, the scale's scale body is typically set flush with the road surface. Vehicles follow the instructions to drive onto the scale body, and the load cells installed on the scale body are used to weigh the vehicle on the scale body. A scale body flush with the road surface can also improve the driving experience when weighing vehicles moving on the road.

[0004] However, when a scale weighs a vehicle traveling on the road, because the scale body is flush with the road surface, sometimes part of the vehicle is on the scale body and part of the vehicle is on the road surface, resulting in a large error in the weighing result. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a road weighing device that can weigh a vehicle when it is placed on a scale, thereby improving weighing accuracy.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A road weighing device includes a foundation pit arranged on a lane, a scale body arranged in the foundation pit and with a surface flush with the lane road surface, and a weighing sensor arranged at the bottom of the scale body, wherein the output end of the weighing sensor is coupled to a controller MCU, and the output end of the controller MCU is coupled to a display screen for displaying the weighing results, the lane is provided with multiple groups of first detection components around the periphery of the scale body for detecting whether a vehicle is placed on the edge of the scale body, and second detection components are provided on both sides of the lane in the direction of travel of the vehicle for detecting whether a vehicle is placed on the scale body, and the input end of the controller MCU is coupled to a switch component that is simultaneously coupled to the output ends of the first detection component and the second detection component.

[0008] Through the above technical solution, through the first detection component and the second detection component, when a vehicle has completely driven onto the scale, multiple groups of first detection components do not detect that the vehicle is at the edge position, while the second detection component detects that the vehicle is on the scale. At this time, the switch component outputs a high-level signal to the controller MCU, and the controller MCU obtains the results of the weighing sensor and controls the display screen to display the vehicle weight on the symmetrical body. When one group of detection components detects that the vehicle is at the edge position of the scale or the second detection component does not detect that the vehicle is on the scale, the switch component outputs a low-level signal, causing the controller MCU to control the display screen to turn off and not display the weight on the scale at this time, thereby making the vehicle position detection and vehicle weighing more accurate.

[0009] Furthermore, an isolation zone is provided between the lanes, and an isolation guardrail is provided between the isolation zone and the lanes.

[0010] Through the above technical solution, the vehicle's driving path is prompted through the active guardrails in the isolation area, so that the vehicle can clearly know the location of the scale and complete the weighing operation.

[0011] Furthermore, a fixed pile is provided at the end of the isolation zone on the side of the scale body entering the direction of travel of the vehicle, and a rotatably connected guide cylinder is sleeved on the fixed pile.

[0012] Through the above technical solution, the installation of the guide cylinder is achieved through a fixed device, and the guide cylinder facilitates the guidance of the vehicle when it travels to the lane where the scale is located, and performs rotation buffering when the vehicle abuts the guide cylinder, thereby reducing damage to the vehicle and the guide cylinder.

[0013] Furthermore, the guide cylinder is a hollow structure.

[0014] Through the above technical solution, the hollow structure allows the guide cylinder to have a certain degree of buffer space, which can buffer the vehicle extrusion and reduce vehicle friction and damage.

[0015] Furthermore, a turntable that receives the guide cylinder is rotatably connected to the fixed pile.

[0016] Furthermore, the outer diameter of the turntable is larger than the inner diameter of the guide cylinder and smaller than the outer diameter of the guide cylinder.

[0017] Through the above technical solution, the guide cylinder is supported by the turntable, so that the vertical position of the guide cylinder is fixed.

[0018] Furthermore, the isolation guardrail and the scale body are spaced apart.

[0019] Through the above technical solution, the space confinement when the vehicle drives onto the scale is reduced, and the isolation guardrail is convenient for reducing the friction between the vehicle and the guide guardrail when providing guidance to the driver.

[0020] Furthermore, the first detection component includes a first laser emitter and a first laser receiver located on both sides of the long side or short side of the scale body, and the first laser emitter and the first laser receiver are arranged on the isolation guardrail.

[0021] Furthermore, four groups of the first detection components are arranged around the scale body.

[0022] Through the above technical solution, by installing the first laser transmitter and the first laser receiver on the isolation guardrail, the additional installation cost and space of the first laser receiver and the first laser receiver are reduced, and the detection of whether there is a vehicle body at the edge of the symmetrical body can be realized.

[0023] Furthermore, the second detection component includes a second laser emitter and a second laser receiver located on both sides of the long side of the scale body, and the second laser emitter and the second laser receiver are arranged on the isolation guardrail.

[0024] Through the above technical solution, by installing the second laser transmitter and the second laser receiver on the isolation guardrail, the additional installation cost and space of the second laser receiver are reduced, and the detection of whether there is a vehicle body on the symmetrical body can be realized.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. By setting up multiple groups of first detection components around the edge of the scale body, it is possible to detect whether the vehicle is outside the scale body, and by combining the second detection component to detect whether there is a vehicle on the symmetrical body, it is possible to detect whether the vehicle is completely placed on the scale body. At this time, the display control of the display screen can be realized through the switch component, and the vehicle weighing operation on the scale body is completed, thereby improving the accuracy of vehicle weighing.

[0027] 2. The isolation guardrail and guide cylinder are used to guide the direction of the vehicle on the lane where it enters the weighing scale for weighing, and the guide cylinder can reduce the collision or friction damage when the vehicle deviates from the scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0029] Figure 2 is a cross-sectional view of the guide cylinder in this embodiment;

[0030] Figure 3 Schematic diagram of the circuit in this embodiment.

[0031] Figure numerals: 1. foundation pit; 2. weighing sensor; 3. display screen; 4. isolation area; 5. isolation guardrail; 6. fixed pile; 7. connecting rod; 8. guide cylinder; 9. turntable; 10. first detection component; 11. second detection component; 12. switch component; 13. first laser emitter; 14. first laser receiver; 15. second laser emitter; 16. second laser receiver; 17. scale body. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings.

[0033] A road weighing device, such as Figure 1 As shown, it includes a foundation pit 1 set on the lane, a scale body 17 is installed in the foundation pit 1, the upper surface of the scale body 17 is flush with the lane, and a weighing sensor 2 is installed at the bottom of the scale body 17. The weighing sensor 2 can realize the weighing detection of the vehicle weight on the scale body 17.

[0034] The output of the load cell 2 is coupled to a controller MCU, a central processing unit (CPU) that processes received signals and outputs corresponding control signals. Control instructions are programmed using different operating languages ​​depending on the selected MCU. The output of the MCU is coupled to a display screen 3, which displays the weighing results of the load cell 2. The display format of the display screen 3 is controlled by the MCU. The display screen 3 can be installed in an office or outdoors above the corresponding driveway. In this embodiment, the display screen 3 is mounted above the driveway using a pole.

[0035] An isolation zone 4 is set between adjacent lanes. This isolation zone 4 can be a green belt or a blank road interval. A barrier 5 is installed between the isolation zone 4 and the lanes. The height of the bars at both ends of the barrier 5 is greater than the height of the bars in the middle. The barrier 5 is spaced apart from the scale 17 and is placed on both sides of the scale 17 along the direction of vehicle travel. The barrier 5 can be made of iron or wood. The isolation zone 4 actively indicates the vehicle's travel path, allowing the vehicle to clearly identify the location of the scale 17 and complete the weighing operation.

[0036] like Figure 1 and Figure 2As shown, a fixed pile 6 is provided at the end of the isolation zone 4 on the side of the scale 17 along the direction of vehicle travel. A connecting rod 7 is fixedly connected between the fixed device and the isolation guardrail 5. The fixed device is buried under the road surface of the lane or fixed to the road surface by bolts. A rotatably connected guide cylinder 8 is sleeved on the fixed pile 6. The guide cylinder 8 is an annular cylindrical structure with a hollow interior. The guide cylinder 8 is made of plastic material, so that the guide cylinder 8 has certain elastic deformation characteristics. The hollow structure allows the guide cylinder 8 to have a certain degree of buffer space, which cushions the vehicle squeeze and reduces vehicle friction and damage.

[0037] The fixed pile 6 is rotatably connected to a turntable 9 that supports the guide cylinder 8 through a bearing. The turntable 9 is arranged parallel to the road surface and has an outer diameter larger than the inner diameter of the guide cylinder 8 and smaller than the outer diameter of the guide cylinder 8. The turntable 9 supports the guide cylinder 8 to fix the vertical position of the guide cylinder 8.

[0038] The guide cylinder 8 is installed by a fixed device, and the guide cylinder 8 is convenient for guiding the vehicle when it travels to the lane where the scale body 17 is located, and performs rotation buffering when the vehicle abuts the guide cylinder 8, reducing damage to the vehicle and the guide cylinder 8.

[0039] like Figure 1 and 3 As shown, in order to improve the weighing accuracy of the vehicle on the scale 17, a plurality of first detection components 10 for detecting whether the vehicle is placed on the edge of the scale 17 are arranged on the lanes located around the periphery of the scale 17, and second detection components 11 for detecting whether the vehicle is placed on the scale 17 are arranged on both sides of the lane in the direction of vehicle travel. The input end of the controller MCU is coupled to a switch component 12 that is simultaneously coupled to the output ends of the first detection component 10 and the second detection component 11.

[0040] Four groups of first detection components 10 are arranged along the four sides of the scale body 17. The first detection components 10 include a first laser emitter 13 and a first laser receiver 14 located on both sides of the long side or short side of the scale body 17. The first laser emitter 13 and the first laser receiver 14 are arranged on the isolation guardrail 5.

[0041] Among them, the first group of first detection components 10 are arranged at both ends of the isolation guardrail 5 on the driving side of the scale body 17 along the vehicle's driving direction. Since the rods at both ends of the isolation guardrail 5 are higher than the rods in the middle position, the first laser emitter 13 and the first laser receiver 14 of the first detection component 10 are not blocked from detecting the vehicle. This group of first detection components 10 is used to prevent the vehicle from deviating from the scale body 17 in the lane.

[0042] The second group of first detection components 10 are arranged on both ends of the isolation guard 5 on the side of the driver seat along the driving direction of the vehicle. Since the rod body on both ends of the isolation guard 5 is higher than the rod body at the middle position, the detection of the first laser emitter 13 and the first laser receiver 14 of the first detection component 10 is not blocked by the vehicle, and this group of first detection components 10 is used to prevent the vehicle from deviating from the scale body 17 on the road.

[0043] The third group of first detection components 10 are arranged on the rod body at the end of the isolation guard 5 on both sides of the vehicle head position on the same lane. The first laser emitter 13 is arranged on the rod body at the end of the isolation guard 5 on the side of the driver seat, and the first laser receiver 14 is arranged on the rod body at the end of the isolation guard 5 on the side of the driver seat. This group of first detection components 10 is used to prevent the vehicle from driving beyond the scale body 17.

[0044] The fourth group of first detection components 10 are arranged on the rod body at the end of the isolation guard 5 on both sides of the vehicle head position on the same lane. The first laser emitter 13 is arranged on the rod body at the end of the isolation guard 5 on the side of the driver seat, and the first laser receiver 14 is arranged on the rod body at the end of the isolation guard 5 on the side of the driver seat. This group of first detection components 10 is used to prevent the vehicle from not completely driving onto the scale body 17.

[0045] The first laser emitter 13 and the first laser receiver 14 installed on the isolation guard 5 reduce the additional installation cost and space of the first laser receiver 14 and the first laser receiver 14, and can realize the detection of whether there is a vehicle body on the edge of the scale body 17.

[0046] The second detection component 11 includes a second laser emitter 15 and a second laser receiver 16 arranged on the isolation guard 5 on both sides of the same lane.

[0047] The second laser emitter 15 and the second laser receiver 16 installed on the isolation guard 5 reduce the additional installation cost and space of the second laser receiver 16 and the second laser receiver 16, and can realize the detection of whether there is a vehicle body on the scale body 17.

[0048] The power supply of the first detection component 10 and the second detection component 11 can be selected as direct current power supply or alternating current power supply according to the selection of the sensor, and the power supply can be driven by a battery or provided by mains rectification and voltage transformation.

[0049] When installing the first laser emitter 13, the first laser receiver 14, the second laser emitter 15, and the second laser receiver 16, the installation of the sensor can not protrude from the side of the isolation guard 5.

[0050] The first laser receiver 14 and the second laser receiver 16 output a low-level signal when they do not receive the laser signal corresponding to the first laser emitter 13 and the second laser emitter 15.

[0051] like Figure 3 As shown, the switch assembly 12 includes an AND gate U1 , a NOT gate U2 , and an AND gate U3 . The AND gate U1 has two input terminals and one output terminal, the NOT gate U2 has one input terminal and one output terminal, and the AND gate U3 has two input terminals and one output terminal.

[0052] The four input ends of the AND gate U1 are respectively coupled to the output ends of the first laser receivers 14 of the four first detection components 10, the input end of the NOT gate U2 is coupled to the output end of the second laser receiver 16, the two input ends of the AND gate U3 are respectively coupled to the output end of the AND gate U1 and the output end of the NOT gate U2, and the output end of the AND gate U2 is coupled to the input end of the controller MCU.

[0053] When the vehicle has completely driven onto the scale body 17, the multiple groups of first detection components 10 do not detect that the vehicle is at the edge position, while the second detection component 11 detects that the vehicle is on the scale body 17. At this time, the switch component 12 outputs a high-level signal to the controller MCU, and the controller MCU controls the display screen 3 to display the weighing of the vehicle on the symmetrical body 17.

[0054] When one of the detection components detects that a vehicle is located at the edge of the scale 17 or the second detection component 11 does not detect that a vehicle is on the scale 17, the switch component 12 outputs a low-level signal, so that the controller MCU controls the display screen 3 to turn off and does not display the weight on the scale 17 at this time, thereby making the vehicle position detection and vehicle weighing more accurate.

[0055] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A road weighing device, comprising a foundation pit (1) arranged on a roadway, a weighing body (17) arranged in the foundation pit (1) and having a surface flush with the roadway surface, and a weighing sensor (2) arranged at the bottom of the weighing body (17), wherein an output end of the weighing sensor (2) is coupled to a controller MCU, and an output end of the controller MCU is coupled to a display screen (3) for displaying weighing results, characterized in that: The lane is located around the periphery of the scale body (17) and is provided with a plurality of first detection components (10) for detecting whether a vehicle is placed on the edge of the scale body (17), and second detection components (11) for detecting whether a vehicle is placed on the scale body (17) are provided on both sides of the lane in the direction of travel of the vehicle. The input end of the controller MCU is coupled to a switch component (12) that is simultaneously coupled to the output ends of the first detection component (10) and the second detection component (11).

2. A road weighing device according to claim 1, characterized in that: An isolation zone (4) is provided between the lanes, and an isolation guardrail (5) is provided between the isolation zone (4) and the lanes.

3. A road weighing device according to claim 2, characterized in that: A fixed pile (6) is provided at the end of the isolation zone (4) on the side of the scale body (17) along the direction of vehicle travel, and a rotatably connected guide cylinder (8) is sleeved on the fixed pile (6).

4. A road weighing device according to claim 3, characterized in that: The guide cylinder (8) is a hollow structure.

5. A road weighing device according to claim 4, characterized in that: A turntable (9) that receives the guide cylinder (8) is rotatably connected to the fixed pile (6).

6. A road weighing device according to claim 5, characterized in that: The outer diameter of the rotating disk (9) is larger than the inner diameter of the guide cylinder (8) and smaller than the outer diameter of the guide cylinder (8).

7. A road weighing device according to claim 2, characterized in that: The isolation guardrail (5) and the scale body (17) are spaced apart.

8. A road weighing device according to claim 7, characterized in that: The first detection component (10) comprises a first laser emitter (13) and a first laser receiver (14) located on both sides of the long side or the short side of the scale body (17); the first laser emitter (13) and the first laser receiver are arranged on the isolation guardrail (5).

9. A road weighing device according to claim 8, characterized in that: Four groups of the first detection components (10) are arranged around the scale body (17).

10. A road weighing device according to claim 8, characterized in that: The second detection component (11) comprises a second laser emitter (15) and a second laser receiver (16) located on both sides of the long side of the scale body (17); the second laser emitter (15) and the second laser receiver are arranged on the isolation guardrail (5).

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