Overload detection, metering and transmission device and detection, metering and transmission method

Abstract

The present invention discloses an over-eccentric load detection, metering and transmission device and a detection, metering and transmission method. The over-eccentric load detection, metering and transmission device comprises a container body and a center of mass adjustment mechanism. The center of mass adjustment mechanism drives a first weight body thereon to move relative to the container body, thereby changing the center of mass position of the container body, so as to simulate the lifting of containers with different weights and over-eccentric loads in actual operations, provide traceability for the weighing and over-eccentric load measurement of the container, improve the calibration accuracy, and further provide technical guarantee for the safe transportation of the container.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation safety, and in particular to an overload and unbalanced load detection, metering and transmission device and a detection, metering and transmission method. Background Art

[0002] With the development of freight and logistics, the existence of container overload and unbalanced load factors often leads to transportation safety accidents. The existing container weighing and overload and unbalanced load detection devices can detect the weight, overload and unbalanced load of containers when lifting containers, but lack of measurement and traceability devices for container weighing, overload and unbalanced load detection devices, resulting in inconsistent calibration standards for container weighing, overload and unbalanced load detection devices. This results in poor calibration accuracy of container weighing and overload and unbalanced load detection devices, which easily causes hidden dangers in container transportation safety. Summary of the invention

[0003] In view of this, the purpose of the present invention is to propose an overload and unbalanced load detection, metering and transmission device and a detection, metering and transmission method to improve the accuracy of container weighing and overload and unbalanced load detection, and provide technical guarantee for the safe transportation of containers.

[0004] In a first aspect, a first embodiment of the present invention provides an overload detection and measurement transmission device, comprising:

[0005] Container body;

[0006] A center of mass adjustment mechanism is arranged on the container body. A first weight body is also arranged on the center of mass adjustment mechanism. The center of mass adjustment mechanism is configured to drive the first weight body to move relative to the container body and thereby change the center of mass position of the container body.

[0007] Furthermore, the container body comprises:

[0008] A base frame, on which the center of mass adjustment mechanism is movably arranged;

[0009] A column, erected above the base frame; and

[0010] A top frame is arranged above the upright column, and the top frame is used to cooperate with the sling during hoisting.

[0011] Furthermore, the base frame comprises:

[0012] at least two first longitudinal beams, the first longitudinal beams extending in the longitudinal direction and each of the first longitudinal beams being spaced apart from another; and

[0013] At least two first cross beams are arranged between the first longitudinal beams, the first cross beams extend in a transverse direction and are spaced apart from each other, and a first inner space is formed between the first cross beams and the first longitudinal beams;

[0014] Wherein, the horizontal direction is perpendicular to the vertical direction;

[0015] The center of mass adjustment mechanism is movably disposed in the first inner space, and is configured to drive the first weight body to move in the lateral direction and / or the longitudinal direction.

[0016] Furthermore, a first slide rail is provided on a side of the first longitudinal beam facing the first inner space, the first slide rail extends along the longitudinal direction, and the center of mass adjustment mechanism is slidably provided on the first slide rail to drive the first weight body to move along the longitudinal direction.

[0017] Furthermore, the center of mass adjustment mechanism includes:

[0018] two second longitudinal beams, spaced apart along the transverse direction, the second longitudinal beams being slidably disposed on the first slide rail; and

[0019] two second cross beams, arranged between the second longitudinal beams at intervals along the longitudinal direction, a second inner space is formed between the second cross beam and the second longitudinal beam, a second slide rail is arranged on a side of the second cross beam facing the second inner space, and the second slide rail extends along the transverse direction;

[0020] The center of mass adjustment mechanism is configured to drive the first weight body to move in the lateral direction through the second slide rail.

[0021] Furthermore, the overload and unbalanced load detection and measurement transmission device further comprises:

[0022] A tray is slidably disposed on the second slide rail and is used to carry the first weight body.

[0023] Furthermore, the overload and unbalanced load detection and measurement transmission device further comprises:

[0024] a first telescopic push rod, one end of which is abutted against the first crossbeam, and the other end of which is abutted against the second crossbeam, and is configured to be controllably telescopic so as to drive the center of mass adjustment mechanism to slide along the first slide rail; and

[0025] A second telescopic push rod, one end of which is abutted against the second longitudinal beam, and the other end of which is abutted against the tray, and is configured to be controllably telescopic and thereby drive the tray to slide along the second slide rail.

[0026] Furthermore, the overload and unbalanced load detection and measurement transmission device further comprises:

[0027] a lateral displacement sensor, disposed on the second longitudinal beam and configured to detect a displacement of the first weight body along the lateral direction; and

[0028] The longitudinal displacement sensor is disposed on the first crossbeam and is configured to detect the displacement of the center of mass adjustment mechanism along the longitudinal direction.

[0029] Furthermore, two overload detection, metering and transmission devices are provided, and the overload detection, metering and transmission devices are connected in parallel via a connecting plate.

[0030] In a second aspect, a second embodiment of the present invention provides a detection, measurement and transmission method based on the overload and eccentric load detection, measurement and transmission device as described in any one of the first aspects, comprising:

[0031] Adjusting the weight and center of mass position of the overload detection and measurement transmission device;

[0032] For at least two different total weights and at least two different center of mass positions, respectively measure the eccentric load value when the over-eccentric load detection metering and transmission device is hoisted;

[0033] Determine the eccentric load value corresponding to each gross weight and center of mass position.

[0034] The overload and over-eccentric load detection, metering and transmission device of the embodiment of the present invention drives the first weight body to move relative to the container body through the center of mass adjustment mechanism, thereby changing the center of mass position of the container body to simulate the lifting of containers with different weights and overload and over-eccentric load conditions in actual operations, providing traceability for container weighing and overload and over-eccentric load measurement, improving the calibration accuracy, and further providing technical guarantee for the safe transportation of containers. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0036] Figure 1 It is an isometric view of the overload detection and metering transmission device according to the first embodiment of the present invention;

[0037] Figure 2 It is a schematic structural diagram of a base frame according to a first embodiment of the present invention;

[0038] Figure 3 It is a left side view of the overload detection and metering transmission device according to the first embodiment of the present invention;

[0039] Figure 4 It is a cross-sectional view of the AA section of the overload and eccentric load detection metering and transmission device according to the first embodiment of the present invention;

[0040] Figure 5 It is a sectional view of the BB section of the overload detection and metering transmission device according to the first embodiment of the present invention;

[0041] Figure 6It is a CC cross-sectional view of the overload detection and metering transmission device according to the first embodiment of the present invention;

[0042] Figure 7 It is a schematic diagram of the connection of multiple overload and eccentric load detection, metering and transmission devices according to the first embodiment of the present invention;

[0043] Figure 8 It is a flow chart of the detection and measurement transmission method of the second embodiment of the present invention;

[0044] Fig. 9 This is a schematic diagram of weighing error when an overload occurs on a container after lifting;

[0045] Fig.10 It is a schematic diagram of the force on the length direction of the container when the container is overloaded after lifting;

[0046] Fig.11 It is a schematic diagram of the force on the width direction of the container when the container is overloaded after lifting. DETAILED DESCRIPTION

[0047] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0048] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0049] Unless the context clearly requires otherwise, words such as “include”, “including” and the like in the specification should be interpreted as including rather than being exclusive or exhaustive; that is, as meaning “including but not limited to”.

[0050] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] With the development of logistics technology, the safety of freight transportation such as railways and docks has become a focus of attention. Containers are used to load goods and are placed on transport vehicles or ships for logistics transportation with the help of slings, such as gantry cranes or reach loaders. In this process, if the load of the container exceeds the load capacity, or the center of mass of the container deviates too much from the overall geometric center of the container due to stacking and other problems, it will cause safety accidents. Therefore, it is necessary to conduct overload detection on the container to ensure that the weight and center of mass position of the container are within the safe range, so as to ensure that no safety problems occur during transportation.

[0052] The existing device for weighing and over-eccentric load detection installed on the gantry crane hanger or the reach crane can detect the weight and over-eccentric load of the container during hoisting. For example, the device may include a control unit for performing data calculations; a weighing device electrically connected to the control unit for measuring weight and transmitting data back to the control unit; an angle sensor electrically connected to the control unit for detecting angle offset and transmitting data back to the control unit; the control unit calculates the over-eccentric load value of the container based on the above data, and compares it with the over-eccentric load value safety range specified by the national standard, so as to determine whether the container meets the safety requirements and whether it can be transported by logistics.

[0053] However, there is no unified calibration standard. For example, the detection device may have an objective systematic error, and the indication (measurement value) may differ from the actual value under different tests. Then, when testing different containers, the indication error of the detection device itself is different, and the measured value is also measured based on different systematic errors, and the calibration accuracy is very limited.

[0054] Therefore, it is necessary to propose a measurement and traceability device for container weighing and overload detection to make container inspection traceable, that is, to make different inspections based on the same set of standards, thereby improving the accuracy of inspection and ensuring the safety of logistics and transportation.

[0055] Figure 1-Figure 7 FIG. 1 is a schematic diagram of an overload detection and metering device according to a first embodiment of the present invention. Figure 1 As shown, the overload detection, measurement and transmission device comprises a container body 1 and a mass center adjustment mechanism 2 arranged on the container body 1. The mass center adjustment mechanism 2 is also provided with a first weight body 3. The mass center adjustment mechanism 2 can drive the first weight body 3 to move relative to the container body 1 and thus change the mass center position of the container body 1.

[0056] The overload and unbalanced load detection and measurement transmission device of this embodiment can be applied to overload and unbalanced load detection of containers. Figure 1As shown, in an optional implementation, a second weight body 3' can be set on the container body 1, and the second weight body 3' is used to apply a rated load to the container body 1 to simulate the weight of the container in actual transportation operations. That is to say, the first weight body 3 is used as an adjustable weight body to change the center of mass position of the container, and the second weight body 3' is used as a fixed weight body (equivalent to cargo) to apply a load to the container. The center of mass adjustment mechanism 2 is used to adjust the position of the first weight body 3, change the center of mass position of the container body 1, and measure the overload value of the overload detection metering and transmission device under the lifting of a gantry crane or a reach crane as a verification standard for overload detection of containers.

[0057] That is to say, the over-and-off-load detection, metering and transmission device of this embodiment is regarded as a container in actual operation, and the corresponding over-and-off-load value is measured after it is lifted by a lifting device. This allows different containers in actual operation to have a unified calibration standard based on the over-and-off-load detection, metering and transmission device of this embodiment when over-and-off-load detection is performed, thereby ensuring the accuracy of the calibration.

[0058] Among them, regarding the eccentric load value, refer to Figure 9-11 As shown, when a container is hoisted, the four corners of its top surface are usually used as hoisting points. The four hoisting points are A, B, C and D. The forces detected by the four hoisting points are F1, F2, F3 and F4 respectively. The length of the container is L, the width is W, the theoretical center of gravity of the container is O, and the established spatial coordinate system is OXYZ. When the center of gravity of the container deflects, it deflects S in the length direction and H in the width direction. The actual center of gravity of the container is O'.

[0059] Specifically, the off-center load value of a container is calculated as follows:

[0060] According to the moment balance principle, it is calculated as follows:

[0061]

[0062]

[0063] According to formula (1) and formula (2), we can get:

[0064]

[0065]

[0066] Among them, F1, F2, F3, and F4 are the weight of each lifting point of the container, W is the width of the container, L is the length of the container, S is the off-center load of the container in the length direction, and H is the off-center load of the container in the width direction.

[0067] The overload of the center of gravity of the container has a great influence on the stability of train transportation. If the overload is too large, it will seriously affect the stability of train transportation. For example, if the container is loaded in a train box and the overload in the length direction of the container is too large, it will affect the stability of the train during operation. Setting a safety threshold for the overload of the container, reminding the operator and limiting the safety of the equipment can further improve the safety performance. In accordance with the "Railway Cargo Loading and Reinforcement Rules", the allowable limit for the deviation of the center of gravity of the container from the transverse center line of the vehicle is 100mm, and the allowable limit for the deviation of the center of gravity of the container cargo from the longitudinal center line of the vehicle is 600mm (20-foot container) or 1200mm (40-foot container). In order to improve the safety of container transportation, the overload range of container lifting is based on the allowable limit value. In other optional methods, the overload limit value can also be limited according to actual conditions.

[0068] The container may be a frame container, a box container or other types of containers for various purposes, such as Figure 1 As shown, this embodiment takes a frame container as an example, and the frame container body 1 includes a base frame 11, columns 12 and a top frame 13. A center of mass adjustment mechanism 2 and a second weight body 3' are arranged on the base frame 11. The columns 12 are erected above the base frame 11. The top frame 13 is arranged above the columns 12 and is used to cooperate with the sling when the container is hoisted. In this embodiment, the center of mass adjustment mechanism 2 is located in the middle of the base frame 11, and the second weight body 3' is located on both sides of the center of mass adjustment mechanism 2 on the base frame 11. There are four columns 12, which are erected at the four corners of the base frame 11 respectively. The top frame 13 is opposite to the base frame 11, and the columns 12 are between them. As a result, the side and top surfaces of the container body 1 are hollowed out, and some large and irregularly shaped goods can be placed.

[0069] Of course, in some other optional implementations, the container body 1 may also have sides and / or a top surface, thereby forming a partially closed or completely closed box. Alternatively, the container body 1 may not have a top frame 13, but only a bottom frame 11 and a column 12, wherein the column 12 is used to cooperate with a sling to implement lifting. Similarly, the logistics transportation of goods loaded in the container can be realized. Whether the container body 1 is provided with sides, a top surface, or whether it has a top frame 13 can be adjusted according to the volume, shape, quantity, etc. of the loaded goods.

[0070] like Figure 2As shown, the chassis 11 includes at least two first crossbeams 111 and at least two first longitudinal beams 112, so as to form a frame structure. In this embodiment, the chassis 11 includes four first crossbeams 111 and two first longitudinal beams 112. The two first longitudinal beams 112 are arranged in parallel, with a spacing therebetween, and four first crossbeams 111 are arranged at intervals in the spacing, and the four first crossbeams 111 are also parallel to each other, and the two ends of the outermost two first crossbeams 111 are respectively connected to the ends of the two first longitudinal beams 112. Among them, the extension direction of the first crossbeam 111 is recorded as the horizontal direction X, and the extension direction of the first longitudinal beam 112 is recorded as the longitudinal direction Y, and the horizontal direction X and the longitudinal direction Y are perpendicular to each other. In other words, the frame structure of the chassis 11 can be regarded as three rectangles with the same width, which are arranged adjacent to each other in sequence with the sides where the widths are located as common sides.

[0071] A first inner space 10 is formed between the first transverse beam 111 and the first longitudinal beam 112, and the center of mass adjustment mechanism 2 is movably arranged in the first inner space 10, and can drive the first weight body 3 to move in the first inner space 10 relative to the container body 1 along the horizontal direction X and / or the vertical direction Y, and then make a center of mass adjustment in the horizontal direction X and / or the vertical direction Y. In this embodiment, the first inner space 10, i.e., the middle rectangle of the above three rectangles, and the partial space above the middle rectangle, are used to accommodate the center of mass adjustment mechanism 2.

[0072] like Figure 2 As shown, a first slide rail 1121 is provided on the surface of one side of the first longitudinal beam 112 facing the first inner space 10, and the center of mass adjustment mechanism 2 is movably provided on the first slide rail 1121. The first slide rail 1121 is used to support the center of mass adjustment mechanism 2 and provide a movement basis for the center of mass adjustment movement of the center of mass adjustment mechanism 2. Since there are two first longitudinal beams 112, preferably, the first slide rails 1121 can be provided on both first longitudinal beams 112, so that the center of mass adjustment movement of the center of mass adjustment mechanism 2 is more stable. Of course, in some other optional implementations, the first slide rail 1121 can also be provided only on the first longitudinal beam 112 on any one side.

[0073] The first slide rail 1121 is a linear slide rail, which is arranged on the first longitudinal beam 112, extends along the longitudinal direction Y, and guides the longitudinal movement Y of the center of mass adjustment mechanism 2. In order to allow the center of mass adjustment mechanism 2 to move along the first slide rail 1121, a first slider 1121a is slidably arranged on the first slide rail 1121 (see Figure 5), the first slider 1121a is fixedly connected to the mass center adjustment mechanism 2, so that the mass center adjustment mechanism 2 can slide along the first slide rail 1121 through the first slider 1121a, drive the first weight body 3 to move in the longitudinal direction Y, and then adjust the mass center position of the container body 1 in the longitudinal direction Y. The first slider 1121a is used to constrain and guide the movement of the mass center adjustment mechanism 2, and the slider 1121a and the first slide rail 1121 are sliding components that match each other, with smaller friction damping and more stable sliding.

[0074] The way the first slide rail 1121 is arranged on the first longitudinal beam 112, and the way the first slider 1121a is connected to the center of mass adjustment mechanism 2, can both be welding or fastener connection, wherein the fastener connection includes pin connection, screw connection, etc.

[0075] like Figure 2 and Figure 5 As shown, in this embodiment, the center of mass adjustment mechanism 2 is also a frame structure, including two second cross beams 21 parallel to each other and two second longitudinal beams 22 parallel to each other. The second cross beam 21 extends in the transverse direction X, and the second longitudinal beam 22 extends in the longitudinal direction Y. The ends of each second cross beam 21 and each second longitudinal beam 22 are connected in sequence to form a rectangular frame structure. Based on this structure, the first slider 1121a is fixedly connected to the second longitudinal beam 22.

[0076] A second inner space 20 is formed between the second crossbeam 21 and the second longitudinal beam 22, and a second slide rail 211 is provided on a side surface of the second crossbeam 21 facing the second inner space 20. Similar to the first slide rail 1121, the second slide rail 211 is also a linear guide rail, which extends along the horizontal direction X, and is used to drive the first weight body 3 to move along the horizontal direction X and then adjust the center of mass position of the horizontal direction X. The second slide rail 211 can also be arranged on the second crossbeam 21 on both sides to improve the stability of the center of mass adjustment movement, or, it can be arranged only on the second crossbeam 21 on any side. The second slide rail 22 and the first slide rail 21 drive the first weight body 3 to move along the longitudinal direction Y and the horizontal direction X respectively, so that the first weight body 3 can be adjusted in any direction and any distance in the horizontal plane, so that the container body 1 can flexibly adjust the center of mass position to adapt to the verification requirements of containers with various different loads and different overload conditions.

[0077] like Figure 5As shown, in this embodiment, a pallet 31 is also provided on the mass center adjustment mechanism 2, and the pallet 31 is used to carry the first weight body 3. A second slider 211a is slidably provided on the second slide rail 211, and the second slider 211a is fixedly connected to the pallet 31, so that the pallet 31 can drive the first weight body 3 to slide along the second slide rail 211 through the second slider 211a to adjust the mass center in the horizontal direction X. Among them, the first weight body 3 should be fixed on the pallet 31, so that when the overload detection metering and transmission device is lifted for detection, the first weight body 3 will not shake by itself and affect the position of the mass center.

[0078] The second slide rail 211 is arranged on the second cross beam 21, and the second slider 211a is connected to the tray 31 by welding or fastener connection, wherein the fastener connection includes pin connection, screw connection, etc.

[0079] In an optional implementation, the center of mass adjustment mechanism 2 may also include a plurality of third crossbeams (not shown) and a plurality of third longitudinal beams (not shown). Similar to the aforementioned crossbeams and longitudinal beams, the third crossbeams and the third longitudinal beams also form a frame structure and are arranged in the second inner space 20. The tray 31 is fixed on the frame composed of the third crossbeams and the third longitudinal beams, and the outermost third crossbeam is fixedly connected to the second slider 211a, and can then follow the second slider 211a to move along the second slide rail 211, driving the tray 31 and the first weight body 3 to move along the horizontal direction X, and then adjusting the center of mass of the horizontal direction X. In other words, the frame composed of the second crossbeam 21 and the second longitudinal beam 22 is embedded in the frame composed of the first crossbeam 111 and the first longitudinal beam 112, and the frame composed of the third crossbeam and the third longitudinal beam is embedded in the frame composed of the second crossbeam 21 and the second longitudinal beam 22. Since the arrangement is similar, it will not be described in detail here. The frame-type structure can set a slide rail in the hollow area inside the frame, and set a sliding member (in this embodiment, the first weight body 3) that cooperates with the slide rail in the hollow area, so that the sliding member slides in the hollow area of ​​the frame, thereby saving more space.

[0080] like Figure 2 and Figure 4 As shown, the overload detection, metering and transmission device of this embodiment may further include a first telescopic push rod 41 and a second telescopic push rod 42. One end of the first telescopic push rod 41 abuts against the first cross beam 111, and the other end abuts against the second cross beam 21, and can be controlled to extend and retract to drive the center of mass adjustment mechanism 2 to slide along the first slide rail 1211. One end of the second telescopic push rod 42 abuts against the second longitudinal beam 22, and the other end abuts against the tray 31 or the third longitudinal beam, and can be controlled to extend and retract to drive the tray 31 to slide along the second slide rail 211.

[0081] The first telescopic push rod 41 and the second telescopic push rod 42 can be electric push rods and are electrically connected to a control system (not shown). The control system is used to control the first telescopic push rod 41 and / or the second telescopic push rod 42 to extend and retract to a predetermined extent, thereby driving the first weight body 3 to make different degrees of center of mass adjustment in the horizontal direction X and / or the longitudinal direction Y, thereby meeting the detection requirements under different overload conditions.

[0082] like Figure 4 and Figure 6 As shown, the overload detection metering and transmission device of this embodiment may also include a lateral displacement sensor 51 and a longitudinal displacement sensor 52. The lateral displacement sensor 51 is arranged on the second longitudinal beam 22, and is used to detect the displacement of the first weight body 3 along the lateral direction X. The longitudinal displacement sensor 52 is arranged on the first crossbeam 111, and is used to detect the displacement of the first weight body 3 along the longitudinal direction Y. Preferably, a plurality of lateral displacement sensors 51 and longitudinal displacement sensors 52 may be provided, and the measured values ​​are averaged to improve the accuracy of displacement detection.

[0083] The overload detection and measurement transmission device may further include a control system, which is electrically connected to the first telescopic push rod 41 and the second telescopic push rod 42, and is also electrically connected to the lateral displacement sensor 51 and the longitudinal displacement sensor 52, for recording the displacement detection data transmitted back by the lateral displacement sensor 51 and the longitudinal displacement sensor 52. In addition, the control system may be provided with a display screen (not shown in the figure), which is used to display the movement displacement of the telescopic push rod and the center of mass position of the container.

[0084] The over-eccentric load detection and measurement transmission device may also include a posture detection module (not shown in the figure). The posture detection module is fixedly connected to the container body 1 and is used to detect the eccentric load angle of the container body 1 during the lifting process. In order to improve the weighing and eccentric load accuracy of the container, the measurement accuracy of the posture detection module is 0.01°, which can ensure that the overall weighing and eccentric load accuracy of the container is 0.2%.

[0085] The container body 1 can be welded from profiles, which have high structural strength and little deformation during hoisting, and will not affect the center of mass of the container due to the deformation of the hoisting structure. For example, the first crossbeam 111 and the second crossbeam 112 of the chassis 11 can be made of H-shaped steel, and the column 12 can be made of channel steel welded together.

[0086] The first weight body 3 may be a standard weight with an accuracy of 1 kg, thereby making the weight adjustment more accurate.

[0087] The lateral displacement sensor 51 and the longitudinal displacement sensor 52 can be high-precision laser displacement sensors with a measurement accuracy of 1 mm, thereby making the displacement measurement data more accurate.

[0088] like Figure 7 As shown, in order to adapt to more different detection requirements, for example, the size of a single overload detection metering and transmission device is 20 inches, and the detection requirement is a 40-inch container, then the overload detection metering and transmission device 6 of this embodiment can be provided with two. The two overload detection metering and transmission devices 6 are connected in parallel by a connecting plate 7. The connecting plate 7 can have multiple, which are respectively arranged at different positions of the overload detection metering and transmission devices and partially cover the gap at the contact surface of the two, and are fixed by fasteners. In the gap of the contact surface of the two overload detection metering and transmission devices, an ear plate (not shown in the figure) can also be provided to eliminate the gap, increase the contact area, and make the connection more stable. In addition, according to actual needs, multiple overload detection metering and transmission devices can also be connected in the form of connecting plates 7 and / or ear plates to detect containers of larger sizes.

[0089] The overload and over-eccentric load detection, metering and transmission device of this embodiment drives the first weight body thereon to move relative to the container body through the center of mass adjustment mechanism, thereby changing the center of mass position of the container body to simulate the lifting of containers with different weights and overload and over-eccentric load conditions in actual operations, providing traceability for container weighing and overload and over-eccentric load measurement, improving the calibration accuracy, and further providing technical guarantee for the safe transportation of containers.

[0090] Figure 8 FIG. 2 is a schematic diagram of the steps of a detection and measurement transmission method based on the overload detection and measurement transmission device in the first embodiment of the present invention according to the second embodiment of the present invention. Figure 8 As shown, the detection and measurement method comprises:

[0091] S100, adjusting the weight and center of mass position of the overload detection and measurement transmission device.

[0092] The weight is determined by the total weight of the first weight body 3 and the second weight body 3', which can be achieved by increasing or decreasing the number of weights in this embodiment. The center of mass position is adjusted by the center of mass adjustment mechanism 2 driving the first weight body 3 to move.

[0093] S200, measure the eccentric load value.

[0094] You can use a gantry crane or a front crane to hoist the overload detection metering and transmission device. After the overload detection metering and transmission device is stable and still, measure the overload value. Put it down and then lift it up again. Repeat 5 times, record 5 sets of overload values ​​and calculate the average value.

[0095] The height of the overload detection and measurement transmission device should be kept the same each time it is lifted. And the angle between it and the horizontal level should be guaranteed to be ≤0.5° when it is stable after lifting, so that the measurement data is within the controllable error range.

[0096] S300, determine whether the sample capacity meets the requirement. If not, proceed to step S400. If yes, proceed to step S500.

[0097] The sample may include overload and eccentric load detection devices of several commonly used spreaders, or may be specifically increased or decreased according to the detection devices actually used in the operation.

[0098] S400, adjust weight and / or center of mass position.

[0099] Adjust the weight of the first weight body 3, and / or the position of the first weight body 3, to obtain an overload detection metering and transmission device with different load capacity and / or center of mass position. In the present embodiment, this can be achieved by changing the number of weights used as the first weight body 3, and by driving the weights to move through the center of mass adjustment mechanism 2.

[0100] S500, determining multiple groups of eccentric load values.

[0101] That is, for the over-eccentric load detection, metering and transmission devices under at least two different total weights and at least two different center of mass positions adjusted through the above steps, the over-eccentric load detection, metering and transmission devices are measured when being hoisted, and the over-eccentric load values ​​corresponding to each total weight and center of mass position are determined.

[0102] It is easy to understand that the several groups of data measured by the overload detection and measurement transmission device of this embodiment should all meet the overload amount specified in the aforementioned "Railway Cargo Loading Reinforcement Rules". If not, it is necessary to re-measure or maintain and calibrate the device.

[0103] Therefore, when inspecting containers of different load capacities and degrees of overloading, the overloading and over-overloading detection, measurement and transmission device of this embodiment can be used as a calibration standard, and measurement traceability is achieved.

[0104] In addition, the calibration of weighing and overload detection systems, such as gantry crane hangers or reach stackers, needs to be carried out regularly to ensure the detection accuracy of the system.

[0105] The detection, measurement and transmission method of this embodiment provides a feasible method for the measurement traceability of the overload and unbalanced load detection, measurement and transmission device of the container.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An overload detection and measurement transmission device, characterized in that: include: Container body (1); A center of mass adjustment mechanism (2) is arranged on the container body (1), and a first weight body (3) is also arranged on the center of mass adjustment mechanism (2). The center of mass adjustment mechanism (2) is configured to drive the first weight body (3) to move relative to the container body (1) so as to change the center of mass position of the container body (1); The container body (1) comprises: two second weight bodies (3'); and A base frame (11), the center of mass adjustment mechanism (2) and the two second weight bodies (3′) being arranged on the base frame (11); The base frame (11) comprises: at least two first longitudinal beams (112), wherein the first longitudinal beams (112) extend in the longitudinal direction (Y) and each of the first longitudinal beams (112) is spaced apart; and at least two first cross beams (111) are arranged between the first longitudinal beams (112), the first cross beams (111) extend in a transverse direction (X) and each of the first cross beams (111) is spaced apart, and a first inner space (10) is formed between the first cross beams (111) and the first longitudinal beams (112); The first longitudinal beam (112) is provided with a first slide rail (1211), the first slide rail (1211) extends along the longitudinal direction (Y), and the center of mass adjustment mechanism (2) is slidably arranged on the first slide rail (1211) to drive the first weight body (3) to move along the longitudinal direction (Y); The center of mass adjustment mechanism (2) comprises: two second longitudinal beams (22) are arranged at intervals along the transverse direction (X), and the second longitudinal beams (22) are slidably arranged on the first slide rail (1211); and A second crossbeam (21) is provided with a second slide rail (211), wherein the second slide rail (211) extends along the transverse direction (X); The overload detection and measurement transmission device also includes: A first telescopic push rod (41); A second telescopic push rod (42); and A control system configured to control the first telescopic push rod (41) to drive the center of mass adjustment mechanism (2) to slide along the first slide rail (1211), and to control the second telescopic push rod (42) to drive the first weight body (3) to slide along the second slide rail (211); The first inner space (10) is located in the middle of the base frame (11); the first inner space (10) and part of the space above are used to accommodate the center of mass adjustment mechanism (2) and the first weight body (3); and the two second weight bodies (3′) are located on both sides of the center of mass adjustment mechanism (2).

2. The overload detection and measurement transmission device according to claim 1 is characterized in that: The container body (1) further comprises: A column (12) is erected above the base frame (11); and A top frame (13) is arranged above the upright column (12), and the top frame (13) is used to cooperate with the lifting device during lifting.

3. The overload detection and measurement transmission device according to claim 2 is characterized in that: The transverse direction (X) is perpendicular to the longitudinal direction (Y).

4. The overload detection and measurement transmission device according to claim 3 is characterized in that: The first slide rail (1211) is provided on a side of the first longitudinal beam (112) facing the first inner space (10).

5. The overload detection and measurement transmission device according to claim 4 is characterized in that: Two second cross beams (21) are arranged between the second longitudinal beams (22) at intervals along the longitudinal direction (Y), a second inner space (20) is formed between the second cross beam (21) and the second longitudinal beam (22), and the second slide rail (211) is arranged on a side of the second cross beam (21) facing the second inner space (20).

6. The overload detection and measurement transmission device according to claim 5 is characterized in that: The overload detection and measurement transmission device also includes: A tray (31), wherein the tray (31) is slidably disposed on the second slide rail (211) and is used to carry the first weight body (3).

7. The overload detection and measurement transmission device according to claim 6 is characterized in that: One end of the first telescopic push rod (41) abuts against the first cross beam (111), and the other end abuts against the second cross beam (21); One end of the second telescopic push rod (42) abuts against the second longitudinal beam (22), and the other end abuts against the tray (31).

8. The overload detection and measurement transmission device according to claim 6 is characterized in that: The overload detection and measurement transmission device also includes: a lateral displacement sensor (51), disposed on the second longitudinal beam (22) and configured to detect the displacement of the first weight body (3) along the lateral direction (X); and A longitudinal displacement sensor (52) is arranged on the first crossbeam (111) and is configured to detect the displacement of the center of mass adjustment mechanism (2) along the longitudinal direction (Y).

9. The overload and eccentric load detection and measurement transmission device according to any one of claims 1 to 8, characterized in that: Two overload detection, metering and transmission devices are provided, and the two overload detection, metering and transmission devices are connected in parallel via a connecting plate (7).

10. A detection, metering and transmission method based on the overload detection, metering and transmission device according to any one of claims 1 to 9, characterized in that: The method comprises: Adjusting the weight and center of mass position of the overload detection and measurement transmission device; For at least two different total weights and at least two different center of mass positions, respectively measure the eccentric load value when the over-eccentric load detection metering and transmission device is hoisted; Determine the eccentric load value corresponding to each gross weight and center of mass position.

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