Anti-cheating truck scale

Abstract

This utility model provides an anti-cheating truck scale, including a truck scale body. Two narrow slots are formed on the upper side of the truck scale body. A support plate is installed on the inner wall of each narrow slot, and multiple weighing sensors are installed on the inner wall of the narrow slots, below the support plate. By setting up a linkage structure of the support plate, sliding rod, fixing block, and U-shaped double-trigger switch, as well as a detection mechanism of I-shaped side plate, trapezoidal block, rotating rocker, and push switch, when the vehicle is not fully on the scale, the support plate drives the slider and connecting rod to deflect the sliding rod, causing the trigger plate on the fixing block to touch the U-shaped double-trigger switch, triggering an audible and visual alarm. When the tire squeezes the side wall, the I-shaped side plate is pushed, and through the trapezoidal block and connecting frame, it drives the rotating rocker to press down the push switch, similarly triggering an alarm. This achieves real-time monitoring and warning of two types of weighing deviation problems, blocking cheating paths from a mechanical structure level and ensuring the accuracy and fairness of weighing data.

Description

Technical Field

[0001] This utility model relates to the field of logistics weighing technology, specifically to an anti-cheating truck scale. Background Technology

[0002] As a core piece of equipment for weighing bulk goods, truck scales are widely used in logistics, mining, chemical and other fields. Their weighing accuracy directly affects trade settlement and production management. Currently, most mainstream truck scales adopt a trough or flat structure, which collects the force data on the platform through weighing sensors and then converts it into weight information through instruments. In order to adapt to different vehicle models, some narrow-body trough truck scales will also set a transition structure at the edge to guide the vehicle to smoothly enter the scale. However, their mechanical structure design is still mainly based on basic weighing functions and lacks a targeted monitoring mechanism for abnormal conditions during the vehicle entering the scale. In practical use, truck scales often face two types of weighing deviation problems caused by mechanical structural flaws: First, the vehicle is not fully on the scale, such as one side of the wheel being left on the edge of the platform or outside the platform, causing an imbalance of force on both sides of the platform. The sensor only collects part of the weight data, resulting in a lower weighing result. Second, when using narrow-body trough-type truck scales, improper operation by the driver can easily cause the tires to squeeze the side wall of the trough. The reverse support force generated by the side wall will offset part of the vehicle's weight, which will also lead to inaccurate weighing data and cause losses to the metering party. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an anti-cheating truck scale to solve the problems mentioned in the background. This utility model features a novel structure. It incorporates a linkage structure of a support plate, sliding rod, fixing block, and U-shaped double-trigger switch, along with a detection mechanism consisting of an I-shaped side plate, trapezoidal block, rotating rocker, and a push switch. When the vehicle is not fully on the scale, the support plate drives the slider and connecting rod to deflect the sliding rod, causing the trigger plate on the fixing block to touch the U-shaped double-trigger switch, triggering an audible and visual alarm. When the tire compresses the sidewall, the I-shaped side plate is pushed, and through the trapezoidal block and connecting frame, it drives the rotating rocker to press down the push switch, similarly triggering an alarm. This achieves real-time monitoring and warning of two types of weighing deviations, blocking cheating paths from a mechanical structure level and ensuring the accuracy and fairness of weighing data.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-cheating truck scale, comprising a truck scale body, with two narrow slots on the upper side of the truck scale body. A bearing plate is provided on the inner wall of each narrow slot. Multiple weighing sensors are installed on the inner wall of the narrow slots, below the bearing plate. Two first mounting slots are symmetrically formed inside the truck scale body. Two support plates are fixedly connected to the lower side of the inner wall of each first mounting slot. Sliding rods are slidably fitted on opposite sides of the two support plates. Sliding rods are slidably fitted on the lower sides of the inner walls of the two narrow slots. The slider and the sliding rod are connected by a connecting rod. The opposite ends of the two sliding rods are fixedly connected to a fixing block by springs. A U-shaped double trigger switch is installed on the inner wall of the first mounting groove and on one side of the fixing block. A trigger piece that cooperates with the U-shaped double trigger switch is fixedly connected to the side of the fixing block near the U-shaped double trigger switch. Second mounting grooves are opened on both sides of the inner wall of the narrow groove. A detection mechanism is set inside the multiple second mounting grooves. A support frame is set on one side of the truck scale body. An audible and visual alarm component is installed on the upper end of the support frame.

[0005] Furthermore, the upper end of the slider is fixedly connected to the lower side of the support plate, and the two ends of the connecting rod are respectively rotatably engaged with the slider and the sliding rod.

[0006] Furthermore, a dovetail groove is provided on one side of the inner wall of the first mounting groove, and a dovetail block is slidably fitted on the inner wall of the dovetail groove, and the dovetail block is fixedly connected to one side of the fixing block.

[0007] Furthermore, the detection mechanism includes an I-shaped side plate that slides and elastically engages with one side of the inner wall of the second mounting groove. A trapezoidal block is fixedly connected to one side of the I-shaped side plate, and an extrusion groove is formed on one side of the trapezoidal block. A connecting frame is sleeved on the outer side of the extrusion groove, and a guide rod is installed at the upper end of the connecting frame. A rotating rocker is rotatably engaged with the inner wall of the second mounting groove. A strip groove is formed at the end of the rotating rocker near the connecting frame, and a push switch is provided on the lower side of the inner wall of the second mounting groove.

[0008] Furthermore, one end of the I-shaped side plate extends to the inner wall of the narrow groove, and the I-shaped side plate is slidably fitted on one side of the inner wall of the narrow groove. The guide rod is slidably fitted on the inner wall of the extrusion groove. The lower end of the connecting frame is slidably fitted on the inner wall of the strip groove. One end of the rotating rocker plate is engaged with the push switch.

[0009] Furthermore, railings are installed on both sides of the weighbridge body.

[0010] Furthermore, the U-shaped double-trigger switch and the push-button switch are electrically connected to the audible and visual alarm component, respectively.

[0011] The beneficial effects of this utility model are: 1. This utility model, through the linkage structure of a bearing plate, a sliding rod, a fixed block, and a U-shaped double trigger switch, and the detection mechanism of an I-shaped side plate, a trapezoidal block, a rotating rocker, and a pressing switch, enables real-time monitoring and warning of two types of weighing deviation problems. This mechanically blocks cheating paths and ensures the accuracy and fairness of weighing data.

[0012] 2. This utility model, by setting up railings and elastically resetting I-shaped side plates, can solve the problems of initial position deviation of vehicles on the scale and subsequent reuse of the detection mechanism. The railings can guide vehicles to enter the narrow slot in a standardized manner, reducing false detections caused by initial position deviation. The I-shaped side plates are elastically fitted with the inner wall of the mounting slot, and can automatically reset to the initial extended state after the tires leave, so that they can be ready for the next inspection without manual intervention, thereby improving the efficiency of the truck scale and reducing manual maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an anti-cheating truck scale according to the present invention; Figure 2 This is a schematic diagram of the load-bearing plate separation structure of an anti-cheating truck scale according to the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the anti-cheating truck scale body of this utility model. Figure 4 This is a schematic diagram of the cross-sectional structure of the truck scale body of the anti-cheating truck scale according to the present invention. Figure 5 This is a schematic diagram of the detection mechanism of an anti-cheating truck scale according to the present invention.

[0014] In the diagram: 1. Truck scale body; 2. Narrow groove; 3. Load plate; 4. Weighing sensor; 5. First mounting groove; 6. Support plate; 7. Sliding rod; 8. Sliding block; 9. Connecting rod; 10. Fixing block; 11. U-shaped double trigger switch; 12. Trigger plate; 13. Second mounting groove; 14. Detection mechanism; 141. I-shaped side plate; 142. Trapezoidal block; 143. Extrusion groove; 144. Connecting frame; 145. Guide rod; 146. Rotating rocker; 147. Strip groove; 148. Press switch; 15. Dovetail groove; 16. Dovetail block; 17. Guardrail; 18. Support frame; 19. Audible and visual alarm assembly. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Please refer to Figures 1 to 5This utility model provides a technical solution: an anti-cheating truck scale, including a truck scale body 1. Two narrow grooves 2 are formed on the upper side of the truck scale body 1. A bearing plate 3 is provided on the inner wall of the narrow groove 2. Multiple weighing sensors 4 are installed on the inner wall of the narrow groove 2, below the bearing plate 3. Two first mounting grooves 5 are symmetrically formed inside the truck scale body 1. Two support plates 6 are fixedly connected to the lower side of the inner wall of the first mounting groove 5. Sliding rods 7 are slidably fitted on opposite sides of the two support plates 6. Sliding sliders 8 are slidably fitted on the lower side of the inner wall of the two narrow grooves 2. A sliding block is provided between the sliding slider 8 and the sliding rod 7. The weighbridge has a connecting rod 9, and two sliding rods 7 are fixedly connected to a fixing block 10 at opposite ends by springs. A U-shaped double trigger switch 11 is installed on the inner wall of the first mounting groove 5 and on one side of the fixing block 10. A trigger piece 12 that cooperates with the U-shaped double trigger switch 11 is fixedly connected to the side of the fixing block 10 near the U-shaped double trigger switch 11. Second mounting grooves 13 are opened on both sides of the inner wall of the narrow groove 2. Detection mechanisms 14 are set inside the multiple second mounting grooves 13. A support frame 18 is set on one side of the weighbridge body 1, and an audible and visual alarm component 19 is installed on the upper end of the support frame 18. The upper end of the slider 8 is fixedly connected to the lower side of the bearing plate 3. The two ends of the connecting rod 9 are rotatably engaged with the slider 8 and the sliding rod 7, respectively. A dovetail groove 15 is opened on one side of the inner wall of the first mounting groove 5. A dovetail block 16 is slidably engaged on the inner wall of the dovetail groove 15 and is fixedly connected to one side of the fixing block 10. Railings 17 are installed on both sides of the weighbridge body 1. The U-shaped double-trigger switch 11 and the push switch 148 are electrically connected to the audible and visual alarm assembly 19, respectively. When a vehicle drives into the narrow groove 2 of the weighbridge body 1 and the wheels press on the support plate 3, the support plate 3 moves slightly downward under gravity, causing the slider 8, which is fixedly connected to its lower side, to slide down along the inner wall of the narrow groove 2. The slider 8, through the connecting rods 9 that rotate at both ends, pushes the sliding rods 7 that are slidably engaged on the support plate 6 in the first mounting groove 5 to move in opposite directions. The sliding rods 7 on both sides compress the spring that is connected together, and drive the fixed block 10 to move (the fixed block 10 slides along the dovetail groove 15 through the dovetail block 16 to ensure smooth movement). If the vehicle is not fully on the scale (one side of the wheel does not press the support plate 3 firmly), the downward movement of the support plates 3 on both sides is different, causing the sliding rods 7 on both sides to push Uneven force causes the fixed block 10 to shift towards the side with less force, causing the trigger plate 12 on the fixed block 10 to touch the U-shaped double trigger switch 11 on the inner wall of the first mounting slot 5. The U-shaped double trigger switch 11 then sends a signal to the audible and visual alarm component 19 on the support frame 18 to trigger the alarm. This process monitors the force balance of the bearing plate 3 in real time through mechanical linkage, which can quickly identify cheating behavior such as vehicles not being fully on the scale. In addition, the cooperation between the dovetail groove 15 and the dovetail block 16 prevents the fixed block 10 from shifting and getting stuck, ensuring the accuracy of the detection. At the same time, the railings 17 on both sides of the truck scale body 1 can guide the vehicle to enter the narrow slot 2 in a standardized manner, reducing misjudgments caused by initial position deviation.

[0017] In this embodiment, the detection mechanism 14 includes an I-shaped side plate 141 that slides and elastically engages with one side of the inner wall of the second mounting groove 13. A trapezoidal block 142 is fixedly connected to one side of the I-shaped side plate 141. An extrusion groove 143 is provided on one side of the trapezoidal block 142. A connecting frame 144 is sleeved on the outer side of the extrusion groove 143. A guide rod 145 is installed on the upper end of the connecting frame 144. A rotating rocker 146 is rotatably engaged with the inner wall of the second mounting groove 13. A strip groove 147 is provided at one end of the rotating rocker 146 near the connecting frame 144. A push switch 148 is provided on the lower side of the inner wall of the second mounting groove 13. One end of the I-shaped side plate 141 extends to the inner wall of the narrow groove 2, and the I-shaped side plate 141 is slidably fitted on one side of the inner wall of the narrow groove 2. The guide rod 145 is slidably fitted on the inner wall of the extrusion groove 143. The lower end of the connecting frame 144 is slidably fitted on the inner wall of the strip groove 147. One end of the rotating rocker 146 is engaged with the push switch 148. When the vehicle travels within the narrow groove 2, if the tires compress the inner wall of the narrow groove 2, they will contact and push the I-shaped side plate 141 extending to the inner wall of the narrow groove 2 (the I-shaped side plate 141 is elastically engaged with the inner wall of the second mounting groove 13 and initially remains extended). The I-shaped side plate 141 slides into the second mounting groove 13, causing the trapezoidal block 142 on one side to move. The compression groove 143 on the trapezoidal block 142 pushes the connecting frame 144 upward through the guide rod 145 that is slidably engaged with the inner wall. The lower end of the connecting frame 144 slides along the strip groove 147 of the rotating seesaw 146, causing the rotating seesaw 146 to rotate around the axis of the inner wall of the second mounting groove 13. 46 The end away from the connecting frame 144 presses down on the lower side of the inner wall of the second mounting groove 13. The press switch 148 sends a signal to the audible and visual alarm component 19 to trigger the alarm. This process directly contacts the tire through the I-shaped side plate 141, accurately capturing the tire's action of squeezing the sidewall. The transmission structure of the trapezoidal block 142 and the connecting frame 144 converts the lateral squeezing force into the downward pressure of the rotating rocker 146, ensuring that the press switch 148 is stably triggered. This can effectively avoid the distortion of weighing data caused by the reverse support force generated by the tire squeezing the sidewall. Moreover, the elastically fitted I-shaped side plate 141 can automatically reset after the tire leaves, without affecting subsequent testing.

[0018] When using the device, before the vehicle enters the weighbridge body 1, the barrier 17 guides the vehicle to align with the narrow groove 2. Once the vehicle is inside the narrow groove 2, its wheels press against the support plate 3. The support plate 3 performs basic weighing via the load cell 4, simultaneously driving the slider 8 and connecting rod 9 to move the sliding rod 7 and the fixed block 10. If the vehicle is not fully on the scale, the fixed block 10 shifts, causing the trigger plate 12 to touch the U-shaped double trigger switch 11, triggering the audible and visual alarm component 19. If the vehicle's tires press against the inner wall of the narrow groove 2 during travel, it will push the I-shaped side plate 141 to slide, which, through the trapezoidal block 142 and connecting frame 144, causes the rotating sway bar to rotate. When plate 146 presses the switch 148, it also triggers the audible and visual alarm component 19. When the vehicle is adjusted to the correct position (fully on the scale without squeezing the side wall), the load-bearing plate 3 is balanced, the fixing block 10 is reset, the trigger piece 12 disengages from the U-shaped double trigger switch 11, the I-shaped side plate 141 is elastically reset, the rotating rocker 146 rebounds, the switch 148 is reset, the alarm stops, and the weighing sensor 4 collects weight data normally. The whole process combines mechanical structure and electronic alarm to achieve real-time monitoring and warning of two types of cheating behaviors: the vehicle is not fully on the scale and the tires squeeze the side wall, thus ensuring the accuracy of weighing.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-cheating truck scale comprising a truck scale body (1), characterized in that: The weighbridge body (1) has two narrow slots (2) on its upper side. A bearing plate (3) is installed on the inner wall of each narrow slot (2). Multiple weighing sensors (4) are installed on the inner wall of each narrow slot (2) below the bearing plate (3). The weighbridge body (1) has two symmetrically arranged first mounting slots (5) inside. Two support plates (6) are fixedly connected to the lower side of the inner wall of each first mounting slot (5). Sliding rods (7) are slidably fitted on opposite sides of each of the two support plates (6). Sliding sliders (8) are slidably fitted on the lower side of the inner wall of each of the two narrow slots (2). A connecting rod (9) is provided between the sliding sliders (8) and the sliding rods (7). The two sliding rods (7)... A fixed block (10) is fixedly connected to one end by a spring. A U-shaped double trigger switch (11) is installed on the inner wall of the first mounting groove (5) and on one side of the fixed block (10). A trigger piece (12) that cooperates with the U-shaped double trigger switch (11) is fixedly connected to the side of the fixed block (10) near the U-shaped double trigger switch (11). A second mounting groove (13) is opened on both sides of the inner wall of the narrow groove (2). A detection mechanism (14) is set inside the multiple second mounting grooves (13). A support frame (18) is set on one side of the truck scale body (1). An audible and visual alarm component (19) is installed on the upper end of the support frame (18).

2. The tamper-proof truck scale of claim 1, wherein: The upper end of the slider (8) is fixedly connected to the lower side of the bearing plate (3), and the two ends of the connecting rod (9) are respectively rotatably engaged with the slider (8) and the sliding rod (7).

3. The tamper-proof truck scale of claim 1, wherein: A dovetail groove (15) is provided on one side of the inner wall of the first mounting groove (5). A dovetail block (16) is slidably fitted on the inner wall of the dovetail groove (15). The dovetail block (16) is fixedly connected to one side of the fixing block (10).

4. The tamper-proof truck scale of claim 1, wherein: The detection mechanism (14) includes an I-shaped side plate (141) that slides and elastically engages with one side of the inner wall of the second mounting groove (13). A trapezoidal block (142) is fixedly connected to one side of the I-shaped side plate (141). An extrusion groove (143) is provided on one side of the trapezoidal block (142). A connecting frame (144) is sleeved on the outer side of the extrusion groove (143). A guide rod (145) is installed at the upper end of the connecting frame (144). A rotating rocker (146) is rotatably engaged with the inner wall of the second mounting groove (13). A strip groove (147) is provided at one end of the rotating rocker (146) near the connecting frame (144). A push switch (148) is provided on the lower side of the inner wall of the second mounting groove (13).

5. The tamper-proof truck scale of claim 4 wherein: One end of the I-shaped side plate (141) extends to the inner wall of the narrow groove (2), and the I-shaped side plate (141) is slidably fitted on one side of the inner wall of the narrow groove (2). The guide rod (145) is slidably fitted on the inner wall of the extrusion groove (143). The lower end of the connecting frame (144) is slidably fitted on the inner wall of the strip groove (147). One end of the rotating rocker (146) is engaged with the push switch (148).

6. The tamper-proof truck scale of claim 1, wherein: The weighbridge body (1) is equipped with railings (17) on both sides.

7. The anti-cheating truck scale according to claim 1, characterized in that: The U-shaped double-trigger switch (11) and the press switch (148) are electrically connected with the sound-light alarm component (19) respectively.

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