Special calibration frame and calibration equipment for container overload and unbalanced load detection device

Abstract

The utility model relates to a special calibration frame and calibration equipment for a container overload and unbalanced load detection device, which are used for solving the technical problems that weights are randomly placed and have no accurate coordinates in the conventional calibration mode, and the weights may deviate in the calibration process. The crane comprises a suspension arm and a flatcar, and a container spreader is arranged on the suspension arm; the calibration frame is placed on the flatcar, the bottom plate is a rectangular plate, a plurality of positioning structure groups are distributed in the length direction of the rectangular plate, and each positioning structure group comprises a plurality of positioning structures which are uniformly distributed in the width direction; the multiple weights are used for being detachably connected with the corresponding positioning structures respectively. The number of the stand columns is at least four, the stand columns are fixed to the four corners of the bottom plate respectively, and corner fittings used for being matched with a spin lock of a lifting appliance of the container overload and unbalanced load detection device are arranged at the tops of the stand columns.

Description

Technical Field

[0001] This utility model relates to a dedicated calibration frame and calibration equipment for a container overload detection device. Background Technology

[0002] Container overload and off-center load detection devices are measuring instruments, and their accurate and reliable metrological performance is essential to ensure the safety of container transportation. In April 2021, China State Railway Group Co., Ltd. released the calibration specification JJF(CR)036-2021, "Railway Container Overload and Off-Center Load Detection Devices," and the National Weighing Instrument Metrology Technical Committee also formulated the calibration specification for "Suspended Container Weighing Devices" to address the traceability issue of the measurement values ​​of container overload and off-center load detection devices. Container overload and off-center load detection devices are measuring instruments used to measure the total weight, off-center weight, and off-center load of containers. The published JJF(CR)036-2021, "Railway Container Overload and Off-Center Load Detection Device Calibration Specification," clearly defines the relevant calibration items and methods. Existing calibration methods for container overload and off-center load detection devices suffer from issues such as arbitrary placement of weights without precise coordinates and potential weight shifts during calibration, leading to insufficient calibration accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a dedicated calibration frame and calibration equipment for container overload detection devices, in order to solve the technical problems of arbitrary placement of weights without precise coordinates and possible weight shifts during the calibration process in existing calibration methods.

[0004] The technical solution of the special calibration frame for the container overload detection device of this utility model is as follows: The special calibration frame for the container overload detection device includes:

[0005] The base plate is a rectangular plate, and multiple positioning structure groups are distributed along the length of the rectangular plate. Each positioning structure group includes multiple positioning structures evenly distributed along the width.

[0006] There are multiple weights, each used for detachable connection with the corresponding positioning structure;

[0007] There are at least four columns, which are fixed to the four corners of the base plate. The top of the columns is equipped with corner fittings for use with the turn lock of the spreader of the container overload detection device.

[0008] Based on the above solution, a further improvement is made as follows: the positioning structure is a groove on the upper surface of the rectangular plate, the shape of which is adapted to the shape of the bottom of the weight to limit its position after it is placed in. Because the weight is relatively heavy, the groove design allows the weight to have only one degree of freedom in the upward direction. Due to its large weight, the weight is also not easily moved upwards. The groove design facilitates disassembly and positioning while ensuring that the weight will not move easily.

[0009] Based on the above scheme, the following improvements are made: the groove is a rectangular groove, and the bottom of the weight is a rectangular platform.

[0010] Based on the above scheme, further improvements are made as follows: there are five positioning structure groups, and each positioning structure group includes three positioning structures. Since the standard calibration method requires calibration points to be selected within three weight ranges: 5-10 tons, 10-15 tons, and 15-20 tons, a 3×5 matrix arrangement of the positioning structures is used. Each weight weighs 1 ton. By removing a certain number of weights, the total weight can be kept within the three weight ranges while ensuring uniform distribution of the weights, thus enabling measurements without deflection.

[0011] The technical solution of the special calibration equipment for the container overload detection device of this utility model is as follows: including:

[0012] Cranes, including booms and flatcars, with container spreaders mounted on the booms;

[0013] The calibration frame, placed on the flatcar, includes:

[0014] The base plate is a rectangular plate, and multiple positioning structure groups are distributed along the length of the rectangular plate. Each positioning structure group includes multiple positioning structures evenly distributed along the width.

[0015] There are multiple weights, each used for detachable connection with the corresponding positioning structure;

[0016] There are at least four columns, which are fixed to the four corners of the base plate. The top of the columns is equipped with corner fittings for use with the turn lock of the spreader of the container overload detection device.

[0017] Based on the above solution, a further improvement is made as follows: the positioning structure is a groove on the upper surface of the rectangular plate, the shape of which is adapted to the shape of the bottom of the weight to limit its position after it is placed in. Because the weight is relatively heavy, the groove design allows the weight to have only one degree of freedom in the upward direction. Due to its large weight, the weight is also not easily moved upwards. The groove design facilitates disassembly and positioning while ensuring that the weight will not move easily.

[0018] Based on the above scheme, the following improvements are made: the groove is a rectangular groove, and the bottom of the weight is a rectangular platform.

[0019] Based on the above scheme, further improvements are made as follows: there are five positioning structure groups, and each positioning structure group includes three positioning structures. Since the standard calibration method requires calibration points to be selected within three weight ranges: 5-10 tons, 10-15 tons, and 15-20 tons, a 3×5 matrix arrangement of the positioning structures is used. Each weight weighs 1 ton. By removing a certain number of weights, the total weight can be kept within the three weight ranges while ensuring uniform distribution of the weights, thus enabling measurements without deflection.

[0020] The beneficial effects of this utility model are as follows: When using the dedicated calibration frame and calibration equipment for the container overload / offset load detection device, a crane can carry the calibration frame to the detection position. The crane boom can lift the calibration frame, facilitating docking with the container overload / offset load detection device. The rotary locks on the container spreader can directly connect with the corner fittings at the four corners of the calibration frame, facilitating lifting. The calibration frame has multiple positioning structure groups on its base plate, each group including multiple positioning structures, ensuring that the coordinate positions of each positioning structure are fixed and measurable. The weights are of standard weight; after docking with the positioning structures, the coordinates of the weights are also determined, facilitating subsequent calculations. The weights can move freely between the positioning structures to facilitate setting the offset, which is convenient for offset detection during subsequent calibration. Therefore, compared to existing calibration methods, this application has the advantages of convenient offset setting, calculation, adjustment, and operation. Furthermore, because the weights are fixed by the positioning structures, they are not easily moved during subsequent calibration, thus ensuring positional stability and guaranteeing the accuracy of subsequent calibration. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a special calibration frame for the container overload detection device of this utility model;

[0022] Figure 2 A cross-sectional view of a dedicated calibration frame for a container overload detection device;

[0023] Figure 3 This is a top view of the base plate;

[0024] Figure 4 A 3D view of a support column supporting a counterweight.

[0025] In the diagram: 1-base plate, 11-groove, 12-support perforation, 2-column, 21-corner piece, 3-weight, 4-support column. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.

[0028] 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.

[0029] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0030] A specific embodiment of the dedicated calibration frame for the container overload detection device of this utility model is as follows: Figure 1 As shown, the dedicated calibration frame for the container overload / off-center load detection device includes a base plate 1, columns 2, and weights 3. In this embodiment, the calibration frame is modified from a standard 20-foot container; however, it can also be custom-made in other embodiments.

[0031] Specifically, the base plate 1 is a rectangular plate, with multiple positioning structure groups distributed along its length. Each positioning structure group includes multiple positioning structures evenly distributed along its width. In this embodiment, the positioning structure is a groove 11 on the upper surface of the rectangular plate. The shape of the groove 11 is adapted to the shape of the bottom of the weight 3 to limit its position after it is placed in. Due to the large weight of the weight 3, the groove 11 allows the weight 3 to have only one degree of freedom in the upward direction. Because of its large weight, the weight 3 is not easily moved upward. The groove 11 facilitates disassembly and positioning while ensuring that the weight 3 will not move easily. The groove 11 is a rectangular groove, and the bottom of the weight 3 is a rectangular platform. There are five positioning structure groups, and each positioning structure group includes three positioning structures. Since the standard calibration method requires the total weight to be within three ranges of 5-10 tons, 10-15 tons, and 15-20 tons respectively, the calibration points are selected. By setting a 3×5 matrix arrangement through the positioning structure, each weight weighs 1 ton. By removing a certain number of weights, the total weight can be made to fall within the three weight ranges while ensuring that the weights are evenly distributed, so as to complete the measurement without deflection.

[0032] There are multiple weights 3, each detachably connected to a corresponding positioning structure. In this embodiment, there are 17 weights 3, and 15 corresponding grooves 11 (3×5). One or more weights 3 can be selectively placed in each groove 11; when multiple weights 3 are present, they need to be stacked. The central groove 11 has four cylindrical support holes 12, evenly distributed throughout. Four support pillars 4 are correspondingly provided, sliding within the support holes 12. The length of each support pillar 4 is greater than the thickness of the base plate 1, allowing the weights 3 on the pillars to be lifted, creating a distance between the weights 3 and the bottom of the groove 11. This facilitates subsequent sudden loading of the base plate 1 to simulate a connection. The four support pillars 4 can also be connected as a single unit using a thin metal plate for easy movement and use.

[0033] There are four columns 2, which are fixed at the four corners of the base plate 1 respectively. The top of the column 2 is provided with a corner piece 21 for matching the turn lock of the spreader of the container overload detection device. Several columns 2 can also be added, for example, several columns can be arranged symmetrically on the long side of the base plate 1.

[0034] In use, the dedicated calibration frame and calibration equipment for the container overload / offset load detection device of this utility model allows a crane to carry the calibration frame to the detection position. The crane boom can lift the calibration frame, facilitating docking with the container overload / offset load detection device to be calibrated. The rotary locks on the container spreader can directly connect with the corner fittings 21 at the four corners of the calibration frame, facilitating the lifting of the calibration frame. The calibration frame has multiple positioning structure groups on the base plate 1, each group including multiple positioning structures, ensuring that the coordinate positions of each positioning structure are fixed and measurable. The weight 3 is of standard weight; after docking it with the positioning structure, the coordinates of the weight 3 are also determined, facilitating subsequent calculations. The weight 3 can move freely between the positioning structures to facilitate setting the offset, which is convenient for offset detection during subsequent calibration. Therefore, compared with existing calibration methods, this application has the advantages of convenient offset setting, calculation, adjustment, and operation. Furthermore, because the weight 3 is fixed by the positioning structure, it is not easily moved during subsequent calibration, thus ensuring positional stability and guaranteeing the accuracy of subsequent calibration.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A dedicated calibration frame for a container overload / off-center load detection device, characterized in that, include: The base plate is a rectangular plate, and multiple positioning structure groups are distributed along the length of the rectangular plate. Each positioning structure group includes multiple positioning structures evenly distributed along the width. There are multiple weights, each used for detachable connection with the corresponding positioning structure; There are at least four columns, which are fixed to the four corners of the base plate. The top of the columns is equipped with corner fittings for use with the turn lock of the spreader of the container overload detection device.

2. The dedicated calibration frame for the container overload detection device according to claim 1, characterized in that, The positioning structure is a groove on the upper surface of a rectangular plate. The shape of the groove is adapted to the shape of the bottom of the weight to limit its position after it is placed in.

3. The dedicated calibration frame for the container overload detection device according to claim 2, characterized in that, The groove is a rectangular groove, and the bottom of the weight is a rectangular platform.

4. The dedicated calibration frame for the container overload detection device according to claim 1, characterized in that, There are five positioning structure groups, and each positioning structure group includes three positioning structures.

5. A dedicated calibration device for container overload and off-center load detection, characterized in that, include: Cranes, including booms and flatcars, with container spreaders mounted on the booms; The calibration frame, placed on the flatcar, includes: The base plate is a rectangular plate, and multiple positioning structure groups are distributed along the length of the rectangular plate. Each positioning structure group includes multiple positioning structures evenly distributed along the width. There are multiple weights, each used for detachable connection with the corresponding positioning structure; There are at least four columns, which are fixed to the four corners of the base plate. The top of the columns is equipped with corner fittings for use with the turn lock of the spreader of the container overload detection device.

6. The dedicated calibration equipment for the container overload detection device according to claim 5, characterized in that, The positioning structure is a groove on the upper surface of a rectangular plate. The shape of the groove is adapted to the shape of the bottom of the weight to limit its position after it is placed in.

7. The dedicated calibration equipment for the container overload detection device according to claim 6, characterized in that, The groove is a rectangular groove, and the bottom of the weight is a rectangular platform.

8. The dedicated calibration equipment for the container overload detection device according to claim 5, characterized in that, There are five positioning structure groups, and each positioning structure group includes three positioning structures.

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