Side limiting device for heavy-duty weighbridge
By using a limiting structure that combines a sealed bearing with a load-bearing steel column, the problem of reduced weighing accuracy and component wear caused by friction in the side limiting device of a heavy-duty weighbridge is solved, achieving higher weighing accuracy and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-29
- Publication Date
- 2026-07-07
AI Technical Summary
The side limiting device of existing heavy-duty weighbridges, under the lateral thrust of the load-bearing platform, causes frictional interference with the accuracy of the weighing sensor and aggravates component wear, affecting measurement accuracy and equipment lifespan.
The limiting structure, which combines a sealed bearing with a load-bearing steel column, allows the outer ring of the sealed bearing to rotate freely when the load-bearing plate shifts laterally, reducing the interference of friction on the weighing data. The stability of the device is also improved by casting rods and anti-pull-out plates.
It improves the accuracy of weighing data, reduces component wear, and extends the service life of the equipment.
Smart Images
Figure CN224471135U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heavy-duty weighbridge technology, and specifically discloses a side limiting device for heavy-duty weighbridges. Background Technology
[0002] Heavy-duty weighbridges are large-scale weighing devices used to measure the weight of heavy-duty goods (such as heavy trucks, containers, and construction machinery). They are widely used in freight stations, ports, mines, construction sites, and other similar locations. Their core function is to convert the weight of the goods on the weighing platform into an electrical signal using load cells, enabling accurate weighing of heavily loaded objects. This provides crucial data support for trade settlement, overload monitoring, and material statistics, making them an important metrological facility for ensuring safe logistics and transportation and regulating trade order.
[0003] In existing technologies, when a vehicle moves up or down a load-bearing platform or is subjected to other external forces, a lateral thrust is generated on the platform. To address this issue, a common method is to install fixed metal blocks on the side of the load-bearing platform for limiting movement. These blocks maintain a certain gap with the side of the load-bearing platform, and their design aims to allow the load-bearing platform to make necessary minor movements while limiting excessive movement, thereby protecting the load cells.
[0004] However, in actual use, because such stops are purely rigid structures, when the load-bearing platform shifts laterally due to external forces and comes into contact with the stop, a large sliding friction force is easily generated between the two. This friction force is transmitted through the load-bearing platform to the load cell below, interfering with the sensor's accurate perception of the vertical load, thus causing deviations in the weighing data and affecting the measurement accuracy. At the same time, rigid collisions also accelerate the wear of the stop and the load-bearing platform, shortening the service life of the equipment.
[0005] Therefore, a side-limiting device for heavy-duty weighbridges is needed to solve the above problems. Utility Model Content
[0006] This invention proposes a side limiting device for heavy-duty weighbridges. By optimizing the limiting structure, the interference of friction on detection accuracy is reduced, the accuracy of weighing data is improved, and wear between components is reduced.
[0007] This utility model is implemented as follows: a side limiting device for heavy-duty weighbridges includes a base plate, two support platforms are fixedly connected to the upper end of the base plate, two waterproof load cells are fixedly connected to the upper end of each of the two support platforms, a load-bearing plate is fixedly connected to the upper end of the four waterproof load cells, and a side limiting mechanism is provided on the outer side of the load-bearing plate.
[0008] The side limiting mechanism includes a frame fixedly connected to the outer wall of the base plate. The four sides of the frame are provided with mounting grooves. Two vertically distributed load-bearing steel columns are fixedly connected inside the four mounting grooves. Multiple sealed bearings are fixedly connected to the outer walls of the multiple load-bearing steel columns. A rectangular frame is fixedly connected to the outer wall of the load-bearing plate.
[0009] The left and right ends of the outer wall of the frame are fixedly connected to fixing plates. Multiple casting rods are provided on the lower side of the two fixing plates. Multiple anti-pull-out plates are fixedly connected to the outer wall of the multiple casting rods. A connecting mechanism is provided on the upper side of the multiple casting rods.
[0010] Both ends of the load-bearing plate are fixedly connected to ramps.
[0011] As a preferred embodiment of the side limiting device for heavy-duty weighbridges according to this utility model, the connecting mechanism includes a limiting hole opened at the lower end of the fixed plate, a limiting plate inserted into the limiting hole is fixedly connected to the upper end of the casting rod, a through hole is opened through the top of the inner wall of the limiting hole, a screw rod inserted into the through hole is fixedly connected to the upper end of the limiting plate, and a hexagonal nut that abuts against the upper end of the fixed plate is threadedly connected to the outer wall of the screw rod.
[0012] As a preferred embodiment of the side limiting device for heavy-duty weighbridges according to this utility model, the outer wall of the frame is provided with multiple drainage grooves, and the lower ends of the multiple drainage grooves are flush with the upper end of the base plate.
[0013] As a preferred embodiment of the side limiting device for heavy-duty weighbridges according to this utility model, the gap between the plurality of sealed bearings and the rectangular frame is 0.5mm.
[0014] As a preferred embodiment of the side limiting device for heavy-duty weighbridges according to this utility model, a receiving groove is provided on each of the two opposite sides of the ramps, and multiple sealed bearings located on the left side extend into the interior of the left receiving groove, and multiple sealed bearings located on the right side extend into the interior of the right receiving groove.
[0015] As a preferred embodiment of the side limiting device for heavy-duty weighbridges according to this utility model, notches are provided at the lower right corners of both ramps, and both fixing plates are located inside the two notches.
[0016] The beneficial effects of this utility model are:
[0017] The device is pre-embedded in the concrete foundation using a cast-in-place rod and anti-pull-out plates on the outer wall to ensure overall pull-out resistance and stability. Once a vehicle drives onto the load-bearing plate, its weight is converted into an electrical signal by a waterproof load cell and output to the weighing display instrument. If the load-bearing plate shifts laterally, the rectangular frame will contact the sealed bearing on the supporting steel column within the mounting groove. Its outer ring can rotate freely, thereby reducing the interference of friction on detection accuracy through optimized limiting structure, improving the accuracy of weighing data, and reducing component wear. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0019] Figure 1 This is a front sectional view of the side limiting device for heavy-duty weighbridges according to the present invention.
[0020] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 This is a structural diagram of the frame of this utility model;
[0022] Figure 4 This is a partial front view of the present invention;
[0023] Figure 5 This is a structural diagram of the casting rod of this utility model.
[0024] The markings in the diagram are: 1. Base plate; 2. Support platform; 3. Waterproof load cell; 4. Load-bearing plate; 5. Frame; 6. Mounting groove; 7. Bearing steel column; 8. Sealed bearing; 9. Drainage groove; 10. Notch; 11. Slope; 12. Receiving groove; 13. Fixing plate; 14. Limiting hole; 15. Limiting disc; 16. Casting rod; 17. Anti-pull plate; 18. Hexagonal nut; 19. Screw; 20. Rectangular frame. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0026] Please see Figure 1-5A side limiting device for a heavy-duty weighbridge includes a base plate 1, two support platforms 2 are fixedly connected to the upper end of the base plate 1, two waterproof load cells 3 are fixedly connected to the upper end of each of the two support platforms 2, a load-bearing plate 4 is fixedly connected to the upper end of the four waterproof load cells 3, and a side limiting mechanism is provided on the outer side of the load-bearing plate 4.
[0027] The side limiting mechanism includes a frame 5 fixedly connected to the outer wall of the base plate 1. The four sides of the frame 5 are provided with mounting grooves 6. The interior of each of the four mounting grooves 6 is fixedly connected to two vertically distributed load-bearing steel columns 7. The outer walls of the multiple load-bearing steel columns 7 are fixedly connected to multiple sealed bearings 8. The outer wall of the load-bearing plate 4 is fixedly connected to a rectangular frame 20.
[0028] Fixed plates 13 are fixedly connected to both ends of the outer wall of frame 5. Multiple casting rods 16 are provided on the lower side of the two fixed plates 13. Multiple anti-pull plates 17 are fixedly connected to the outer wall of the multiple casting rods 16. A connecting mechanism is provided on the upper side of the multiple casting rods 16.
[0029] Both ends of the load-bearing plate 4 are fixedly connected with ramps 11.
[0030] In this embodiment: During use, since multiple casting rods 16 and multiple pull-out plates 17 on the outer wall are pre-embedded in the concrete foundation, the pull-out resistance and stability of the multiple casting rods 16 can be improved by the multiple pull-out plates 17. And the device is stably fixed by multiple connecting mechanisms, providing a solid foundation for subsequent weighing work.
[0031] When a vehicle needs to be weighed, it smoothly drives onto the load-bearing plate 4 via one of the ramps 11 on either side. The weight is transferred through the load-bearing plate 4 to four waterproof load cells 3. The waterproof load cells 3 convert the weight signal into an electrical signal and transmit it to an external weighing display instrument to achieve weighing measurement. During this process, if the vehicle generates lateral thrust or other external forces that cause the load-bearing plate 4 to shift laterally, the rectangular frame 20 on the outer wall of the load-bearing plate 4 will move towards the frame 5. Multiple sealed bearings 8 are fixed on the load-bearing steel column 7 in the mounting groove 6. When the rectangular frame 20 shifts to contact the sealed bearings 8, the sealed bearings 8 prevent the load-bearing plate 4 from shifting excessively. Furthermore, since the outer ring of the sealed bearing 8 can rotate freely, it prevents excessive friction with the rectangular frame 20 during limiting. Compared to the sliding friction of traditional rigid blocks, this structure reduces the interference of friction on detection accuracy by optimizing the limiting structure, improving the accuracy of weighing data, and reducing wear between components.
[0032] As a technical optimization of this utility model, the connecting mechanism includes a limiting hole 14 opened at the lower end of the fixed plate 13, a limiting plate 15 inserted into the limiting hole 14 is fixedly connected to the upper end of the casting rod 16, a through hole is opened through the top of the inner wall of the limiting hole 14, a screw 19 inserted into the through hole is fixedly connected to the upper end of the limiting plate 15, and a hexagonal nut 18 that abuts against the upper end of the fixed plate 13 is threadedly connected to the outer wall of the screw 19.
[0033] In this embodiment, multiple limiting discs 15 at the upper end of the casting rod 16 are respectively inserted into multiple limiting holes 14 at the lower end of the fixing plate 13. Through the mutual cooperation of the multiple limiting holes 14 and the limiting discs 15, the device as a whole is provided with a lateral limiting effect. And through the cooperation of multiple hexagonal nuts 18 and multiple screws 19, the multiple limiting discs 15 are locked in the multiple limiting holes 14, thereby stabilizing and fixing the device.
[0034] As a technical optimization of this utility model, a plurality of drainage grooves 9 are provided through the outer wall of the frame 5, and the lower ends of the plurality of drainage grooves 9 are flush with the upper end of the base plate 1.
[0035] In this embodiment: the lower ends of the multiple drainage grooves 9 on the outer wall of the frame 5 are flush with the upper end of the base plate 1. When water accumulates inside the frame 5, the water can be discharged in time through the drainage grooves 9.
[0036] As a technical optimization of this utility model, the gap between the multiple sealed bearings 8 and the rectangular frame 20 is 0.5mm.
[0037] In this embodiment, multiple sealed bearings 8 maintain a 0.5mm gap with the rectangular frame 20. This allows for slight displacement of the load-bearing plate 4 due to thermal expansion and contraction or slight vibration, while also limiting the load-bearing plate 4 when it experiences a large lateral shift by contacting the rectangular frame 20 with the sealed bearings 8, thus reducing the impact of friction on the detection accuracy.
[0038] As a technical optimization of this utility model, a receiving groove 12 is provided on each of the two ramps 11 on opposite sides. Multiple sealed bearings 8 located on the left side extend into the interior of the left receiving groove 12, and multiple sealed bearings 8 located on the right side extend into the interior of the right receiving groove 12.
[0039] In this embodiment: the receiving groove 12 on the opposite side of the two guide slopes 11 provides space for the left and right sealing bearings 8 to move, so as to avoid interference between the guide slopes 11 and the sealing bearings 8.
[0040] As a technical optimization of this utility model, notches 10 are provided at the lower right corners of the two ramps 11, and the two fixing plates 13 are located inside the two notches 10.
[0041] In this embodiment, the notch 10 at the lower right corner of the two ramps 11 accommodates the fixing plate 13, so that the ramps 11 will not cause spatial conflict with the fixing plate 13.
[0042] The working principle and usage process of this utility model are as follows: During use, multiple casting rods 16 and multiple anti-pull-out plates 17 on the outer wall are pre-embedded in the concrete foundation. The multiple anti-pull-out plates 17 can improve the pull-out resistance and stability of the multiple casting rods 16. Multiple limiting discs 15 at the upper end of the casting rods 16 are respectively inserted into multiple limiting holes 14 at the lower end of the fixing plate 13. Through the mutual cooperation of the multiple limiting holes 14 and the limiting discs 15, the device as a whole is provided with a lateral limiting effect. And through the cooperation of multiple hexagonal nuts 18 and multiple screws 19, the multiple limiting discs 15 are locked in the multiple limiting holes 14, thereby stabilizing and fixing the device and providing a solid foundation for subsequent weighing work.
[0043] When a vehicle needs to be weighed, it smoothly drives onto the load-bearing plate 4 via one of the ramps 11 on either side. The weight is transferred through the load-bearing plate 4 to four waterproof load cells 3. The waterproof load cells 3 convert the weight signal into an electrical signal and transmit it to an external weighing display instrument to achieve weighing measurement. During this process, if the vehicle generates lateral thrust or other external forces that cause the load-bearing plate 4 to shift laterally, the rectangular frame 20 on the outer wall of the load-bearing plate 4 will move towards the frame 5. Multiple sealed bearings 8 are fixed on the load-bearing steel column 7 in the mounting groove 6. When the rectangular frame 20 shifts to contact the sealed bearings 8, the sealed bearings 8 prevent the load-bearing plate 4 from shifting excessively. Furthermore, since the outer ring of the sealed bearing 8 can rotate freely, it prevents excessive friction with the rectangular frame 20 during limiting. Compared to the sliding friction of traditional rigid blocks, this structure reduces the interference of friction on detection accuracy by optimizing the limiting structure, improving the accuracy of weighing data, and reducing wear between components.
[0044] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0045] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A side limiting device for heavy-duty weighbridges, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to two support platforms (2), and the upper ends of the two support platforms (2) are fixedly connected to two waterproof weighing sensors (3). The upper ends of the four waterproof weighing sensors (3) are fixedly connected to a load-bearing plate (4), and a side limiting mechanism is provided on the outer side of the load-bearing plate (4). The side limiting mechanism includes a frame (5) fixedly connected to the outer wall of the base plate (1). The four sides of the frame (5) are provided with mounting grooves (6). The interior of each of the four mounting grooves (6) is fixedly connected with two vertically distributed load-bearing steel columns (7). The outer walls of the multiple load-bearing steel columns (7) are fixedly connected with multiple sealed bearings (8). The outer wall of the load-bearing plate (4) is fixedly connected with a rectangular frame (20). The left and right ends of the outer wall of the frame (5) are fixedly connected to the fixing plates (13), and the lower side of the two fixing plates (13) is provided with multiple casting rods (16). The outer walls of the multiple casting rods (16) are fixedly connected with multiple anti-pull plates (17), and the upper side of the multiple casting rods (16) is provided with a connecting mechanism. Both ends of the load-bearing plate (4) are fixedly connected to ramps (11).
2. The side limiting device for heavy-duty weighbridges according to claim 1, characterized in that: The connecting mechanism includes a limiting hole (14) at the lower end of the fixed plate (13), and a limiting plate (15) inserted into the limiting hole (14) is fixedly connected to the upper end of the casting rod (16). A through hole is provided at the top of the inner wall of the limiting hole (14). A screw (19) inserted into the through hole is fixedly connected to the upper end of the limiting plate (15). A hexagonal nut (18) that abuts against the upper end of the fixed plate (13) is threaded onto the outer wall of the screw (19).
3. The side limiting device for heavy-duty weighbridges according to claim 1, characterized in that: The outer wall of the frame (5) is provided with multiple drainage grooves (9), and the lower ends of the multiple drainage grooves (9) are flush with the upper end of the base plate (1).
4. A side limiting device for heavy-duty weighbridges according to claim 1, characterized in that: The gap between the multiple sealed bearings (8) and the rectangular frame (20) is 0.5 mm.
5. A side limiting device for heavy-duty weighbridges according to claim 1, characterized in that: Each of the two ramps (11) has a receiving groove (12) on one side opposite to the other. Multiple sealed bearings (8) on the left side extend into the interior of the left receiving groove (12), and multiple sealed bearings (8) on the right side extend into the interior of the right receiving groove (12).
6. A side limiting device for heavy-duty weighbridges according to claim 1, characterized in that: Both of the two ramps (11) have notches (10) at their lower right corners, and both of the two fixing plates (13) are located inside the two notches (10).