Container overload and unbalanced load detection and calibration device
By using a buffer seat to protect the weights in the container overload detection device, the problems of wear and contamination of the weights during transportation and hoisting are solved, thereby improving the stability of calibration accuracy and hoisting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-04-03
AI Technical Summary
In existing container overload detection devices, the weights are easily damaged by bumps and scratches during calibration, and are also easily contaminated during transportation and hoisting, which affects the calibration accuracy.
A container overload detection and calibration device was designed. A buffer seat is used to protect the weight. During transportation, the weight is placed in the upper cavity of the buffer seat and supported by the support plate and spring layer to avoid bumps and wear. During hoisting, the buffer seat is separated from the weight, and the weight is placed in the buffer seat to avoid contact with the ground and prevent contamination.
Protect the weights from loss of accuracy during transportation and hoisting, ensure calibration accuracy, avoid bumps and contamination of the weights, and improve hoisting efficiency.
Smart Images
Figure CN121783320A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a container overload detection and calibration device. Background Technology
[0002] The container overload and off-center load detection device measures the total weight and center of gravity coordinates of the container. It is mainly used to prevent overloading or off-center loading of transport vehicles such as road vehicles, railway trains and cargo ships carrying containers, and to ensure transportation safety.
[0003] There are two main calibration methods currently available: One method is the calibration of the suspended container overload detection device. This method requires placing each weight separately, and then, after setting the coordinate origin, measuring the distance between each weight and the origin to determine the coordinate value. This method is very cumbersome and time-consuming.
[0004] Secondly, in order to reduce the workload of measuring the position of each weight, multiple weights are stacked in the container at the same coordinate position to achieve eccentric measurement. However, since the standard requires the total weight of the container to be in the range of 5t-10t, 10t-15t, and 15t-20t respectively to select a calibration point to measure the error of the total weight indication, the existing single weight cannot reach this high weight. Therefore, multiple weights are often stacked on top of each other, which leads to an unstable center of gravity and is prone to safety accidents.
[0005] Therefore, the applicant of this application proposes to use a simulated container frame of the same size as the container frame to simulate a shipping container. Grooves are evenly distributed within the simulated frame, and standard weights are positioned within these grooves. The simulated frame and weights are transported by a medium-duty truck equipped with a front-mounted crane. Since 17 weights are needed, each weighing 1 ton, and the simulated frame weighs 2 tons, due to weight restrictions on medium-duty trucks, two trucks are generally required for transport. Half of the weights are placed directly in the grooves of the simulated frame. Upon arrival at the calibration position, the truck-mounted crane is used to lift the weights out of the grooves and place them on the ground. The simulation frame was lifted off the vehicle. Because the combined weight of the simulation frame and weights exceeded the lifting limit of the truck-mounted crane, the simulation frame and weights needed to be lifted out separately. During calibration, the number and position of the weights within the simulation frame needed to be adjusted. Therefore, the weights needed to be frequently lifted into and out of the grooves in the simulation frame. When placed on the ground, the weights easily accumulate dirt or damp soil, affecting their weight. Since the weights are of standard weight, any weight loss will impact the subsequent calibration accuracy. Furthermore, dirt and damp soil can fall into the grooves of the simulation frame, affecting the positioning of the weights. On the other hand, the accuracy of the weights is also affected by the transportation process, as the weights are bumped and jostled during transport, causing impacts and wear against the grooves. Summary of the Invention
[0006] The purpose of this invention is to provide a container overload and off-center load detection and calibration device, which can prevent the weights from being bumped and worn during transportation, and can also prevent the weights from getting dirty or sticking to the ground when they are lifted out without affecting the lifting efficiency, thus avoiding affecting the calibration accuracy.
[0007] The technical solution of the present invention is as follows: The container overload detection and calibration device includes: The weight has a weight of 1 t and a square cross-section with a lug at the top center. The simulation frame includes a base plate with multiple square-shaped grooves for placing weights. The grooves include an upper groove and a lower groove arranged vertically. The side length of the upper groove is greater than that of the lower groove. The upper groove and the lower groove are connected by a conical groove section. The size of the lower groove is adapted to the size of the weights and can be used to position and place the weights. The buffer seat is shaped to fit the groove for positioning within the groove. The buffer seat includes a housing and a spring layer and a support plate arranged from bottom to top inside the housing. The housing includes an upper cavity, a lower cavity and a conical connecting cavity. The upper cavity and the lower cavity are connected by the conical connecting cavity. The size of the upper cavity is the same as the size of the lower groove, which can be used to position and place weights. Two hanging frames are symmetrically hinged at the upper part of the housing. The lifting device includes a U-shaped rod, with the vertical sections at both ends of the U-shaped rod forming auxiliary hooks. An upper lifting ring extends upward from the center of the upper part of the U-shaped rod, and a lower lifting hook extends downward from the center of the lower part of the U-shaped rod. During transportation, the weight is located in the upper cavity of the buffer seat and supported by the support plate, and the buffer seat is placed in the groove. When lifting the buffer seat, the lifting device is connected to the hook of the truck crane through the upper lifting ring, the lower hook of the lifting device is connected to the lifting lug of the weight, and the two auxiliary hooks are connected to the two hooks of the hanging frame. The buffer seat is placed on the ground to prevent the weight from touching the ground. When lowering the weight into the groove, only the lower hook of the lifting device is engaged with the lifting lug of the weight in the buffer seat to lift the weight out of the buffer seat.
[0008] The beneficial effects of this technical solution are as follows: When using the container overload and off-center load detection and calibration device, during the transportation of weights, the weights can be placed in the upper cavity of the buffer seat and supported by the support plate and spring layer. Then, the buffer seat and the weights are placed together in the corresponding groove of the simulation frame. Alternatively, the buffer seat can be placed in the corresponding groove of the simulation frame first, and then the weights can be placed in the buffer seat. During transportation, the bumps of the vehicle are mainly borne and consumed by the spring layer, avoiding the weights from being damaged or worn by impacting the inner wall of the groove during bumps, thereby protecting the weight accuracy of the weights from loss. Upon arrival at the calibration site, the simulation frame and weights need to be unloaded from the vehicle separately. Then, according to calibration requirements, different numbers of weights are hoisted into different recesses within the simulation frame. When lifting the weights out of the recesses, the upper lifting ring of the lifting device is connected to the crane on the vehicle, while the lower hook of the device is hooked to the lifting lug of the weight placed in the buffer seat. The two hook-and-lift frames on the housing are hooked to the two auxiliary hooks of the lifting device. Lifting then begins, with the lower hook of the device bearing the load first, followed by the auxiliary hooks, lifting the weights and buffer seat simultaneously. The entire assembly is then placed on the ground. During this temporary ground storage, the weights remain within the buffer seat to prevent direct contact with the ground and the adhesion of dirt, which could affect their mass accuracy. As can be seen, the buffer seat not only cushions the weights during transportation, protecting them from wear, bumps, and other damage, but also prevents the weights from contacting the ground and adhering to dirt during temporary storage. Subsequently, the lifting device can be relaxed by the truck-mounted crane below, allowing the two hook-on frames to be removed so that the weights can be lifted out individually and then placed back into the groove of the simulation frame for use as a standard counterweight during subsequent calibration. In this application, by designing that the size of the upper cavity is the same as the size of the lower groove, the weights can be accurately positioned by relying on the upper cavity when transported with the buffer seat. After being lifted out of the buffer seat and placed in the lower groove, the weights can still be accurately positioned by relying on the lower groove, ensuring that the positional accuracy is not affected during subsequent calibration.
[0009] Based on the above solution, the following further improvement is made: an elastic rubber layer is attached to the inner wall of the upper cavity. During transportation, especially during braking, acceleration, and turning, the elastic rubber layer can provide some cushioning for the weights and protect them from wear.
[0010] Based on the above solution, the following improvement is made: the shape of the hanging frame is rectangular.
[0011] Based on the above scheme, the following improvements are made: the spring layer consists of multiple compression springs arranged in parallel, the lower end of the compression spring is connected to the bottom of the lower cavity, and the upper end of the compression spring is connected to the lower part of the support plate.
[0012] Based on the above scheme, the following improvement is made: the depth of the upper cavity is greater than the height of the weight. This design allows the lifting lugs of the weight to be lower than the hanging frame, facilitating the attachment and removal of the hanging frame.
[0013] Based on the above solution, the following improvements are made: the material of the enclosure is stainless steel.
[0014] Based on the above solution, further improvements are made as follows: the lower surface and sides of the enclosure have a hydrophobic coating. This helps to minimize the adhesion of dirt to the outer surface of the enclosure. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the simulation frame in a specific embodiment of the container overload detection and calibration device of the present invention; Figure 2 A front sectional view of a container overload detection and calibration device; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram illustrating the state of a weight being lifted from a buffer seat located on the ground. In the diagram: 1-simulated frame, 11-base plate, 12-groove, 121-upper groove, 122-lower groove, 123-conical groove section, 2-weight, 21-lifting lug, 3-buffer seat, 31-box body, 311-upper cavity, 312-lower cavity, 313-conical connecting cavity, 314-hanging frame, 32-spring layer, 33-support plate, 4-lifting tool, 41-U-shaped rod, 411-auxiliary hook, 42-upper lifting ring, 43-lower hook, 5-truck-mounted crane. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0017] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0018] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0019] The features and performance of the present invention will be further described in detail below with reference to embodiments.
[0020] A specific embodiment of the container overload detection and calibration device of the present invention: as follows Figure 1-5 As shown, the container overload detection and calibration device includes multiple weights 2, each weight 2 weighing 1t, with a square cross-section and a lifting lug 21 at the top center.
[0021] The simulation frame 1 includes a base plate 11, on which a plurality of square-section grooves 12 are provided for placing weights 2. The grooves 12 include an upper groove 121 and a lower groove 122 arranged vertically. The side length of the upper groove 121 is greater than the side length of the lower groove 122. The upper groove 121 and the lower groove 122 are connected by a conical groove section 123. The size of the lower groove 122 is adapted to the size of the weights 2 and can be used to position and place the weights 2.
[0022] The buffer seat 3 is shaped to fit the groove 12 for positioning within the groove 12. The buffer seat 3 includes a housing 31 and a spring layer 32 and a support plate 33 arranged from bottom to top within the housing 31. The housing 31 includes an upper cavity 311, a lower cavity 312, and a conical connecting cavity 313. The upper cavity 311 and the lower cavity 312 are connected by the conical connecting cavity 313. The size of the upper cavity 311 is the same as the size of the lower groove 122, which can be used to position the weight 2. Two hanging frames 314 are symmetrically hinged to the upper part of the housing 31. The lifting device 4 includes a U-shaped rod 41. The vertical sections at both ends of the U-shaped rod 41 form auxiliary hooks 411. An upper lifting ring 42 extends upward from the upper center of the U-shaped rod 41, and a lower lifting hook 43 extends downward from the lower center of the U-shaped rod 41.
[0023] During transportation, the weight 2 is located in the upper cavity 311 of the buffer seat 3 and supported by the support plate 33. The buffer seat 3 is placed in the groove 12. When lifting out the buffer seat 3, the lifting device 4 is connected to the hook of the truck crane 5 through the upper lifting ring 42. The lower hook 43 of the lifting device 4 is hooked to the lifting lug 21 of the weight 2. The two auxiliary hooks 411 are hooked to the two hanging frames 314. The buffer seat 3 is placed on the ground to prevent the weight 2 from touching the ground. When lifting the weight 2 into the groove 12, only the lower hook 43 of the lifting device 4 is hooked to the lifting lug 21 of the weight 2 in the buffer seat 3 to lift the weight 2 out of the buffer seat 3.
[0024] An elastic rubber layer is attached to the inner wall of the upper cavity 311. During transportation, especially during braking, acceleration, and turning, the elastic rubber layer provides cushioning for the weight 2 and protects it from wear. The hanging frame 314 is rectangular. The spring layer 32 consists of multiple parallel compression springs, with the lower end of the springs connected to the bottom of the lower cavity 312 and the upper end connected to the lower part of the support plate 33. The depth of the upper cavity 311 is greater than the height of the weight 2. This design allows the lifting lug 21 of the weight 2 to be lower than the hanging frame 314, facilitating the attachment and removal of the hanging frame 314. The housing 31 is made of stainless steel. The lower surface and sides of the housing 31 have a hydrophobic coating to minimize the adhesion of dirt to the outer surface of the housing 31.
[0025] When using the container overload and off-center load detection and calibration device, during the transportation of the weight 2, the weight 2 can be placed in the upper cavity 311 of the buffer seat 3 and supported by the support plate 33 and the spring layer 32. Then, the buffer seat 3 together with the weight 2 can be placed in the corresponding groove 12 of the simulation frame 1. Alternatively, the buffer seat 3 can be placed in the corresponding groove 12 of the simulation frame 1 first, and then the weight 2 can be placed in the buffer seat 3. During transportation, the bumps of the vehicle are mainly borne and consumed by the spring layer 32, avoiding the weight 2 from being damaged or worn due to impact with the inner wall of the groove 12 when bumped, thus protecting the weight accuracy of the weight 2 from loss. Upon arrival at the calibration site, the simulation frame 1 and weights 2 need to be unloaded from the vehicle. Then, according to calibration requirements, different quantities of weights 2 are hoisted into different grooves 12 of the simulation frame 1. When lifting weights 2 out of the grooves 12, the vehicle-mounted crane 5 connects to the upper lifting ring 42 of the lifting device 4. The lower hook 43 of the lifting device 4 is hooked to the lifting lug 21 of the weights 2 placed in the buffer seat 3. The two hook-and-lift frames 314 on the housing 31 are hooked to the two auxiliary hooks 411 of the lifting device 4. Lifting then begins, with the lower hook 43 of the lifting device 4 bearing the load first, followed by the auxiliary hooks 411, simultaneously lifting the weights 2 and the buffer seat 3. The entire assembly is then placed on the ground. During this temporary storage on the ground, the weights 2 remain within the buffer seat 3 to prevent direct contact with the ground and the adhesion of dirt, which could affect their quality. As can be seen, the buffer seat 3 not only cushions the weight 2 during transportation, thus protecting it from wear, bumps, and other damage, but also prevents the weight 2 from contacting the ground and adhering to dirt during temporary storage. Subsequently, the lifting device 4 can be relaxed by the truck-mounted crane 5 below, allowing the two hanging frames 314 to be removed so that the weight 2 can be lifted out individually and then placed back into the groove 12 of the simulation frame 1 for use as a standard counterweight during subsequent calibration. In this application, by designing the upper cavity 311 to have the same size as the lower groove 122, the weight 2 can be accurately positioned by relying on the upper cavity 311 when transported with the buffer seat 3. When the weight 2 is lifted out of the buffer seat 3 and placed in the lower groove 122, it can still be accurately positioned by relying on the lower groove 122, ensuring that the positional accuracy is not affected during subsequent calibration.
[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.
Claims
1. Container overload and off-center load detection and calibration device, including: The weight has a weight of 1 t and a square cross-section with a lug at the top center. Its characteristic is that it further includes: The simulation frame includes a base plate with multiple square-shaped grooves for placing weights. The grooves include an upper groove and a lower groove arranged vertically. The side length of the upper groove is greater than that of the lower groove. The upper groove and the lower groove are connected by a conical groove section. The size of the lower groove is adapted to the size of the weights and can be used to position and place the weights. The buffer seat is shaped to fit the groove for positioning within the groove. The buffer seat includes a housing and a spring layer and a support plate arranged from bottom to top inside the housing. The housing includes an upper cavity, a lower cavity and a conical connecting cavity. The upper cavity and the lower cavity are connected by the conical connecting cavity. The size of the upper cavity is the same as the size of the lower groove, which can be used to position and place weights. Two hanging frames are symmetrically hinged at the upper part of the housing. The lifting device includes a U-shaped rod, with the vertical sections at both ends of the U-shaped rod forming auxiliary hooks. An upper lifting ring extends upward from the center of the upper part of the U-shaped rod, and a lower lifting hook extends downward from the center of the lower part of the U-shaped rod. During transportation, the weight is located in the upper cavity of the buffer seat and supported by the support plate, and the buffer seat is placed in the groove. When lifting the buffer seat, the lifting device is connected to the hook of the truck crane through the upper lifting ring, the lower hook of the lifting device is connected to the lifting lug of the weight, and the two auxiliary hooks are connected to the two hooks of the hanging frame. The buffer seat is placed on the ground to prevent the weight from touching the ground. When lowering the weight into the groove, only the lower hook of the lifting device is engaged with the lifting lug of the weight in the buffer seat to lift the weight out of the buffer seat.
2. The container overload detection and calibration device according to claim 1, characterized in that, An elastic rubber layer is attached to the inner wall of the upper cavity.
3. The container overload detection and calibration device according to claim 1, characterized in that, The hanging frame is rectangular in shape.
4. The container overload detection and calibration device according to claim 1, characterized in that, The spring layer consists of multiple compression springs arranged in parallel. The lower end of the compression spring is connected to the bottom of the lower cavity, and the upper end of the compression spring is connected to the lower part of the support plate.
5. The container overload detection and calibration device according to claim 1, characterized in that, The depth of the upper cavity is greater than the height of the weight.
6. The container overload detection and calibration device according to claim 1, characterized in that, The enclosure is made of stainless steel.
7. The container overload detection and calibration device according to claim 1, characterized in that, The bottom and sides of the enclosure have a hydrophobic coating.