Lateral limiting fence of truck scale
By designing an automatically rising baffle and linkage mechanism on the truck scale, the problems of wear and tear on vehicles and inaccurate weighing caused by existing limit devices have been solved, achieving efficient and accurate vehicle measurement and departure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN QIHENG INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-05-26
AI Technical Summary
The limiting devices of existing truck scales can easily damage the appearance of vehicles when clamping them, and can also affect the vehicles' departure, leading to inaccurate weighing.
A lateral limit bar for a truck scale was designed. The weight sensor detects the weight of the vehicle and automatically raises the barrier for limiting the vehicle's movement. The barrier is raised and lowered through a linkage mechanism to avoid contact with the vehicle. A guide bar and spring structure are used to ensure that the vehicle is accurately parked on the load-bearing plate.
It improves measurement accuracy, reduces vehicle wear, ensures smooth vehicle departure, and avoids the impact of friction caused by the limiting device.
Smart Images
Figure CN224286087U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of truck scale technology, specifically, it relates to a lateral limiting bar for a truck scale. Background Technology
[0002] A truck scale (weighbridge) is a high-precision, heavy-duty weighing instrument used to accurately measure the weight of large vehicles. It is a key infrastructure for ensuring fair trade, strengthening transportation management, and conducting production control in modern industrial, agricultural, and commercial logistics activities.
[0003] Chinese patent CN219200583U discloses a lateral limiting structure for a truck scale. The base has an upper and lower ramp on its side, an auxiliary plate on its side, and a truck pressing plate on its upper end. A limiting device is installed between the base and the truck pressing plate, and a limiting plate is installed on the upper end of the truck pressing plate. This lateral limiting structure utilizes the weight of the truck itself to cause the truck pressing plate to sink as the truck passes over the scale. The limiting device gradually limits the truck's movement using the limiting plates on both sides, preventing the truck from veering off course and ensuring accurate display of the truck's total weight. The threaded sleeve in the limiting device rotates when the threaded rod is pressed down, causing the entire rotating rod to rotate, which in turn causes the connecting rod to retract the limiting plate. This facilitates intelligent limiting, avoiding manual limiting and significantly reducing labor costs.
[0004] The above technical solution has the following drawbacks:
[0005] In actual use, when a vehicle is above a weighbridge, if the limit plate retracts to clamp and limit the vehicle, it will cause wear and tear on the vehicle's appearance. At the same time, after the weighing is completed, the vehicle will also be affected by the friction of clamping and will be unable to drive away normally. Therefore, for vehicles being weighed, the limit plate only needs to serve as a guide and a barrier, and there is no need to limit the vehicle by contact. Utility Model Content
[0006] To address the above deficiencies, this utility model provides a lateral limiting rail for a truck scale, including a base and ramps located on both sides of the base. A pressing groove is provided on the top of the base, and a weighing sensor is installed in the center of the pressing groove. The input end of the weighing sensor is connected to the base plate, and a load-bearing plate adapted to the pressing groove is installed on the top of the base plate.
[0007] The base has a telescopic groove on its front and rear sides respectively. The telescopic groove is equipped with a baffle for warning and limiting the movement of the two sides of the car. Each baffle is connected to the load-bearing plate through a linkage mechanism. The baffle rises as the load-bearing plate is pressed down. The bottom surface of the load-bearing plate is connected to the inner wall of the pressing groove through multiple springs.
[0008] A guide bar is installed on both the left and right sides of the pressure groove.
[0009] Furthermore, the linkage mechanism includes a lever base installed on the inner wall of the lower pressure groove. The lever base is hinged to a linkage rod via a transmission shaft. One end of the linkage rod is connected to the base plate, and the other end is fixed to an extension plate. A vertical sliding groove is provided on the upper surface of the extension plate. Side sliding grooves are provided on the inner side walls of the vertical sliding grooves. A slider is connected to the side sliding grooves via a sliding rod.
[0010] The number of linkage mechanisms is at least four, which connect the four corners of the base plate to the two ends of the side baffles via sliders.
[0011] Furthermore, a rubber pad is fixed to the swing groove of the lever base.
[0012] Furthermore, a support frame is welded to the bottom of the load-bearing plate to ensure that the load is evenly distributed around its perimeter.
[0013] Furthermore, the top of the guide strip is curved.
[0014] Furthermore, the top of the baffle is provided with several anti-collision barrels arranged at equal intervals.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] When a vehicle travels to the top of the weighbridge, the weight of the vehicle automatically raises the barrier to guide and limit the vehicle's direction of travel, ensuring that the vehicle remains completely on the load-bearing plate and improving the accuracy of the measurement. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present invention.
[0018] Figure 2 This is a top view of the base in this utility model.
[0019] Figure 3 This is a bottom view of the load-bearing plate in this utility model.
[0020] Figure 4 This is a front view of the load-bearing plate in this utility model.
[0021] Figure 5 This is a schematic diagram of the linkage mechanism in this utility model.
[0022] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.
[0023] In the diagram: 1. Base; 2. Load-bearing plate; 3. Ramp; 4. Guide bar; 5. Baffle; 6. Base plate; 7. Linkage mechanism; 71. Lever base; 72. Rubber pad; 73. Linkage rod; 74. Extension plate; 75. Vertical slide groove; 76. Side slide groove; 77. Slide rod; 78. Slider; 8. Telescopic groove; 9. Spring; 11. Support frame. Detailed Implementation
[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0025] Example 1
[0026] like Figures 1 to 6 As shown, this embodiment provides a lateral limiting barrier for a truck scale, including a base 1 for parking vehicles and ramps 3 located on both sides of the base 1 for getting on and off vehicles. The top of the base 1 has a pressing groove, and a weighing sensor for weighing is installed in the center of the pressing groove. The weighing sensor has the same structure and function as the weighing sensor in a traditional truck scale, so it will not be described in detail here. The input end of the weighing sensor is connected to the base plate 6. The top of the base plate 6 is equipped with a load-bearing plate 2 that is adapted to the pressing groove. The bottom of the load-bearing plate 2 is welded with a support frame 11 for evenly distributing force around its perimeter.
[0027] When the vehicle is parked on top of the load-bearing plate 2, its own weight is transmitted to the load-bearing plate 2 and it moves down. At this time, the load cell can detect the force applied to the load-bearing plate 2. (It should be noted that the load-bearing plate 2 needs to be "tare" to ensure the accuracy of the measurement.)
[0028] The base 1 has a telescopic groove 8 on the front and rear sides respectively. The telescopic groove 8 is equipped with a baffle 5 for warning and limiting the movement of the car on both sides. Each baffle 5 is connected to the load-bearing plate 2 through a linkage mechanism 7. The baffle 5 rises as the load-bearing plate 2 is pressed down. At the same time, the bottom surface of the load-bearing plate 2 is connected to the inner wall of the pressing groove through multiple springs 9. The springs 9 provide support and can rebound to reset the load-bearing plate 2 after the vehicle leaves.
[0029] In detail, the linkage mechanism 7 includes a lever base 71 installed on the inner wall of the lower pressure groove. A rubber pad 72 is fixed at the swing groove of the lever base 71 to reduce wear. The lever base 71 is hinged to a linkage rod 73 via a transmission shaft. One end of the linkage rod 73 is connected to the base plate 6, and the other end is fixed to an extension plate 74. A vertical slide groove 75 is provided on the upper surface of the extension plate 74. Side slide grooves 76 are provided on the inner side walls of the vertical slide groove 75. A slider 78 is connected to the side slide groove 76 via a slide rod 77. When the load-bearing plate 2 moves the base plate 6 downward, the linkage rod 73 is simultaneously driven to tilt upward away from the base plate 6 through the lever principle. The slider 78 is limited by the telescopic groove 8, so that the slider 78 can only move upward (since the lever is a circular motion, the slider 78 and the slide rod 77 are designed to move and rotate within the side slide groove 76).
[0030] It should be noted that there are at least four linkage mechanisms 7, which connect the four corners of the base plate 6 to the two ends of the side baffles 5 via sliders 78 (fixed by bolts or other means) to make the lifting process of the baffles 5 more stable.
[0031] A guide bar 4 (which can be a speed bump) is installed on both the left and right sides of the pressure groove. Compared with the lateral limiting structure of a truck scale mentioned in the background technology, there is no open groove on the load-bearing plate 2, so there will be no situation where the limiting plate cannot move due to jamming. At the same time, the arc design of the two guide bars 4 will not affect the starting of the vehicle when it moves away, even if the load-bearing plate 2 moves down and the horizontal plane is lower than the horizontal plane of the base 1.
[0032] Example 2
[0033] The difference from Embodiment 1 is that the top of the baffle 5 is provided with several equally spaced anti-collision barrels (i.e., a highway rotating anti-collision guardrail, which uses a hollow barrel fitted on the anti-collision bar), which can prevent damage to the vehicle caused by improper driving.
[0034] It should be noted that the structure described in this utility model can be implemented in many different forms and is not limited to the embodiments described. Any equivalent transformations made by those skilled in the art based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, such as the loading and unloading of other items, are included within the protection scope of this utility model.
Claims
1. A lateral limiting barrier for a truck scale, comprising a base and ramps located on both sides of the base, characterized in that: The base has a pressure groove on its top, a load cell is installed in the center of the pressure groove, the input end of the load cell is connected to the base plate, and a load-bearing plate adapted to the pressure groove is installed on the top of the base plate. The base has a telescopic groove on its front and rear sides respectively. The telescopic groove is equipped with a baffle for warning and limiting the movement of the two sides of the car. Each baffle is connected to the load-bearing plate through a linkage mechanism. The baffle rises as the load-bearing plate is pressed down. The bottom surface of the load-bearing plate is connected to the inner wall of the pressing groove through multiple springs. A guide bar is installed on both the left and right sides of the pressure groove.
2. The lateral limiting bar of a truck scale as described in claim 1, characterized in that: The linkage mechanism includes a lever base installed on the inner wall of the lower pressure groove. The lever base is hinged to a linkage rod via a transmission shaft. One end of the linkage rod is connected to the base plate, and the other end is fixed to an extension plate. A vertical sliding groove is provided on the upper surface of the extension plate. Side sliding grooves are provided on the inner side walls of the vertical sliding grooves. A slider is connected to the side sliding grooves via a sliding rod. The number of linkage mechanisms is at least four, which connect the four corners of the base plate to the two ends of the side baffles via sliders.
3. The lateral limiting bar of a truck scale as described in claim 2, characterized in that: A rubber pad is fixed to the swing groove of the lever base.
4. The lateral limiting bar of a truck scale as described in claim 1, characterized in that: The bottom of the load-bearing plate is welded with a support frame to ensure that the force is evenly distributed around its perimeter.
5. The lateral limiting bar of a truck scale as described in claim 1, characterized in that: The top of the guide strip is curved.
6. The lateral limiting bar of a truck scale as described in claim 1, characterized in that: The top of the baffle is provided with several anti-collision barrels arranged at equal intervals.