Weight transfer system and weight transfer frame for container overload and unbalanced load detection device

Abstract

The invention relates to a weight transfer system for a container overload and unbalanced load detection device and a weight transfer frame, the bottom of the weight transfer frame is provided with a positioning part, the front side of the positioning part is in contact fit with the front wall of a groove, and the rear side of the positioning part is in contact fit with the rear wall of the groove; a front side supporting block and a rear side supporting block are assembled at the upper end of the weight transfer frame in the front-back direction in a guiding and moving mode, the front side supporting block and the rear side supporting block are made of flexible materials, the bottom of the front side supporting block and the bottom of the rear side supporting block are in sliding contact fit with the upper end of the weight transfer frame, and supporting block reset springs are correspondingly connected to the front side supporting block and the rear side supporting block. The rear end of the front supporting block is provided with a front supporting inclined surface in contact fit with the front end of the bottom of the weight, and the front end of the rear supporting block is provided with a rear supporting inclined surface in contact fit with the rear end of the bottom of the weight. The technical problem that in the prior art, in the weight transferring process, heavy weights collide with the grooves, and consequently the weights or the grooves are damaged is solved.

Description

Technical Field

[0001] This invention relates to the field of calibration and verification of container overload detection devices, and more particularly to a weight transfer system for container overload detection devices. Background Technology

[0002] The container overload and off-center load detection device is used to measure the weight and off-center load value of a container. When in use, the container is lifted and its own sensors detect the weight and off-center load of the container to prevent overloading or off-center load problems of transportation vehicles such as road vehicles, railway freight cars and sea freight ships that carry containers.

[0003] To ensure the accuracy of container inspection, the container overload detection device needs to be calibrated. Chinese patent CN120607186A discloses a "calibration method for container overload detection device". The calibration method discloses a calibration box with multiple grooves arranged on the rectangular base plate of the calibration box. When in use, weights are placed in the corresponding grooves, and the off-center load is generated by the weights. The total weight of the weights and the calibration box is used to calibrate the weighing of the overload detection device.

[0004] The problem with existing technology is that, during use, a transport vehicle is needed to transport the weights along with the calibration box to the calibration site. During transportation, to prevent the weights from shifting, they need to be placed in grooves. Due to manufacturing errors, there is a certain gap between the weights and the grooves. Each weight weighs one ton. When encountering sudden braking or sudden vehicle start-up, the weights will collide with the grooves due to inertia. Since each weight weighs one ton, such heavy weights have considerable kinetic energy when moving, and their impact with the grooves will generate significant destructive force. Whether the weights or the grooves are damaged, it will affect the accuracy of subsequent calibration. Summary of the Invention

[0005] The purpose of this invention is to provide a weight transfer system for a container overload detection device, which solves the technical problem in the prior art where heavier weights collide with the groove during weight transfer, causing damage to the weights or the groove.

[0006] The technical solution of the weight transfer system for the container overload detection device in this invention is as follows: A weight transfer system for a container overload detection device includes a transfer vehicle and a calibration box placed on the transfer vehicle during transfer. The bottom plate of the calibration box has multiple grooves. It also includes weights placed in the corresponding grooves during calibration and a weight transfer frame placed between the weights and the grooves during transfer. The bottom of the weight transfer frame has a positioning part for positioning the weights into the grooves. The front side of the positioning part contacts the front wall of the groove, and the rear side of the positioning part contacts the rear wall of the groove. The upper end of the weight transfer frame is equipped with a front support block and a rear support block, which are movably mounted in a front-rear direction. The front and rear support blocks are made of flexible material, and their bottoms slide in contact with the upper end of the weight transfer frame. Each front and rear support block is connected to a corresponding return spring. The rear end of the front support block has a front support ramp for contacting the front end of the weight's bottom, and the front end of the rear support block has a rear support ramp for contacting the rear end of the weight's bottom.

[0007] Furthermore, a front guide box is provided at the top front end of the weight transfer rack. A front support block base is installed in the front guide box and guided to move in the front-back direction. The front support block is fixed on the front support block base. A return spring for the support block located at the front is located between the front support block base and the front wall of the front guide box. A rear guide box is provided at the top rear end of the weight transfer rack. A rear support block base is installed in the rear guide box and guided to move in the front-back direction. The rear support block is fixed on the rear support block base. A return spring for the support block located at the rear is located between the rear support block base and the rear wall of the rear guide box.

[0008] Furthermore, a front spring guide rod is fixed on the base of the front support block, and a return spring of the support block positioned at the front is sleeved on the front spring guide rod. A venting channel is provided on the front wall of the front guide box. A control valve rod that passes through the venting channel is guided and moved along the vertical direction on the front guide box. The control valve rod is provided with a valve rod channel for use in conjunction with the venting channel. As the control valve rod moves from bottom to top, the cross-sectional area of ​​the valve rod channel in the venting channel gradually decreases. As the front spring guide rod moves forward, the front spring guide rod drives the control valve rod to move from bottom to top through the wedge surface.

[0009] Furthermore, the lower channel wall of the valve stem channel is a sloping wall structure that gradually extends upward from back to front.

[0010] The technical solution of the weight transfer rack in this invention is as follows: A weight transfer frame has a positioning part at its bottom for positioning and inserting into a groove. The front side of the positioning part contacts and engages with the front wall of the groove, and the rear side of the positioning part contacts and engages with the rear wall of the groove. The upper end of the weight transfer frame is equipped with a front support block and a rear support block that move in a front-rear direction. The front support block and the rear support block are made of flexible material. The bottom of the front support block and the rear support block slides and engages with the upper end of the weight transfer frame. Each of the front support block and the rear support block is connected with a corresponding support block return spring. The rear end of the front support block is provided with a front support slope for contacting and engaging with the front end of the bottom of the weight, and the front end of the rear support block is provided with a rear support slope for contacting and engaging with the rear end of the bottom of the weight.

[0011] Furthermore, a front guide box is provided at the top front end of the weight transfer rack. A front support block base is installed in the front guide box and guided to move in the front-back direction. The front support block is fixed on the front support block base. A return spring for the support block located at the front is located between the front support block base and the front wall of the front guide box. A rear guide box is provided at the top rear end of the weight transfer rack. A rear support block base is installed in the rear guide box and guided to move in the front-back direction. The rear support block is fixed on the rear support block base. A return spring for the support block located at the rear is located between the rear support block base and the rear wall of the rear guide box.

[0012] Furthermore, a front spring guide rod is fixed on the base of the front support block, and a return spring of the support block positioned at the front is sleeved on the front spring guide rod. A venting channel is provided on the front wall of the front guide box. A control valve rod that passes through the venting channel is guided and moved along the vertical direction on the front guide box. The control valve rod is provided with a valve rod channel for use in conjunction with the venting channel. As the control valve rod moves from bottom to top, the cross-sectional area of ​​the valve rod channel in the venting channel gradually decreases. As the front spring guide rod moves forward, the front spring guide rod drives the control valve rod to move from bottom to top through the wedge surface.

[0013] Furthermore, the lower channel wall of the valve stem channel is a sloping wall structure that gradually extends upward from back to front.

[0014] The beneficial effects of this invention are as follows: During use, as the weights are transported to the calibration site by the calibration box via a transport vehicle, the weights are placed in the groove at the bottom of the calibration box by a weight transport frame. Specifically, the weight transport frame is positioned in the groove by a positioning part at the bottom, ensuring a fixed relationship between the weight transport frame and the groove in the horizontal direction. Then, the bottom of the weight is placed between the front support block and the rear support block. Due to the action of the return spring of the support block, the front and rear ends of the bottom of the weight are tightly supported between the front and rear support blocks without gaps. Due to the action of the front and rear support inclined surfaces, the weight's gravity will generate vertical downward and forward and backward components. The vertical component provides sufficient vertical pressure between the bottom of the support block and the weight transport frame. When the vehicle brakes or starts, the weight will move forward or backward relative to the transport frame. The friction between the support block and the weight transport frame and the elastic deformation of the return spring of the support block are used to buffer the movement of the weight, avoiding hard collisions between the weight and the groove, and reducing damage to the weight and the groove during transport. Attached Figure Description

[0015] Figure 1 This is a top view of a calibration box in one embodiment of a weight transfer system for a container overload detection device according to the present invention; Figure 2 for Figure 1 A schematic diagram showing the state of the weight transfer rack after it has been placed in the central groove; Figure 3 yes Figure 2 Top view; Figure 4 for Figure 2 A schematic diagram showing the state of the weights after they have been placed on the weight transfer rack. Figure 5 yes Figure 4 Enlarged view of point A in the image; In the diagram: 1. Calibration box; 2. Groove; 3. Positioning part; 4. Weight transfer frame; 5. Front guide box; 6. Rear guide box; 7. Front support block; 8. Front support block base; 9. Support block return spring; 10. Front spring guide rod; 11. Rear support block; 12. Front support inclined surface; 13. Rear support inclined surface; 14. Weight; 15. Front support block base; 16. Control valve stem; 17. Venting channel; 18. Valve stem channel; 19. Valve stem return spring. 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] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0019] An example of an implementation of a weight transfer system for a container overload detection device in this invention. Figures 1-5 As shown: The device includes a transport vehicle (not shown in the figure) and a calibration box 1 placed on the transport vehicle during the transport process. The bottom plate of the calibration box is provided with multiple grooves 2, and also includes weights 14 placed in the corresponding grooves during calibration. The four sides of the grooves 2 are inclined structures that gradually move towards the center of the groove from top to bottom. All of the above belong to the prior art and will not be described in detail here.

[0020] The weight transfer system also includes a weight transfer frame 4 for placing the weight between the weight and the groove during the transfer process. The bottom of the weight transfer frame 4 has a positioning part 3 for positioning the weight into the groove. The four sides of the positioning part 3 are inclined surfaces adapted to the four sides of the groove. That is, the front side of the positioning part contacts and engages with the front side of the groove, and the rear side of the positioning part contacts and engages with the rear side of the groove.

[0021] The upper end of the weight transfer frame is guided and moved along the front-to-back direction and assembled to the front support block 7 and the rear support block 11. The front support block 7 is located in front of the rear support block 11. The front support block 7 and the rear support block 11 are made of flexible material, such as rubber. The bottom of the front support block and the rear support block slides and contacts the upper end of the weight transfer frame. The front support block and the rear support block are respectively connected to the support block return spring 9. The rear end of the front support block is provided with a front support inclined surface 12 for contacting and cooperating with the front end of the bottom of the weight. The front end of the rear support block is provided with a rear support inclined surface 13 for contacting and cooperating with the rear end of the bottom of the weight.

[0022] The front end of the weight transfer rack 4 is provided with a front guide box 5. A front support block base 8 is mounted in the front guide box 5 and moves along the front-back direction. The front support block 7 is fixed to the rear end of the front support block base 8. The support block return spring located at the front is called the front support block return spring. The front support block return spring is located between the front support block base 8 and the front box wall of the front guide box.

[0023] The rear end of the weight transfer rack is provided with a rear guide box 6. A rear support block base is installed in the rear guide box 6 and moves along the front-back direction. The rear support block is fixed on the rear support block base. The rear support block reset spring is located between the rear support block base and the rear box wall of the rear guide box.

[0024] In this invention, the front support block and the rear support block are arranged in a symmetrical structure. Therefore, in this embodiment, only the specific structural connection relationship of the front support block is described in detail.

[0025] A front spring guide rod 10 is fixed on the base 8 of the front support block. The front support block reset spring is sleeved on the front spring guide rod 10. A venting channel 17 is provided on the front wall of the front guide box. The venting channel 17 passes through the front wall of the front guide box in the front-back direction.

[0026] A control valve stem 16 is mounted on the front guide box and moves along the vertical direction, passing through the venting channel. The control valve stem 16 is provided with a valve stem channel 18 for use with the venting channel. The valve stem channel 18 passes through the control valve stem 16 in the front-to-back direction. When the valve stem channel 18 is in the venting channel, the venting channel 17 is open. When the valve stem channel 18 leaves the venting channel 17, the venting channel is closed.

[0027] As the control valve stem moves from bottom to top, the cross-sectional area of ​​the valve stem channel within the venting channel gradually decreases. As the front spring guide rod moves forward, it drives the control valve stem to move from bottom to top via a wedge-shaped surface. In this embodiment, the lower channel wall of the valve stem channel is a sloping wall structure that gradually extends upwards from back to front.

[0028] A valve stem return spring is installed at the upper end of the control valve stem. As the front spring guide rod moves forward, the control valve stem moves from bottom to top, and the effective ventilation area of ​​the venting channel gradually decreases until the venting channel is completely blocked.

[0029] During use, calibration personnel need to drive a transport vehicle to transport the calibration box and weights to the calibration site. To prevent damage to the weights or grooves due to collisions during transport, a weight transfer rack needs to be placed between the weights and the grooves. Specifically, the positioning part at the bottom of the weight transfer rack is positioned in the groove, and then the weight is placed between the front and rear support blocks. The front side of the weight's bottom is supported on the front support ramp of the front support block, and the rear side of the weight's bottom is supported on the rear support ramp of the rear support block. The weight of the weight is decomposed into horizontal and vertical forces. The horizontal force is borne by the corresponding support block return spring, and the vertical force is transmitted to the upper end of the weight transfer rack via the support block. This avoids the problem of the flexible support block being unable to bear the weight of the weight, as a single weight weighs one ton. Furthermore, the weight of the weight, combined with the deformation of the support block, also creates significant friction between the support block and the top of the weight transfer rack.

[0030] When the vehicle comes to a stop or suddenly starts, the weight has a large inertia. Initially, this inertial force is jointly borne by the friction between the support block and the weight transfer frame, the return spring of the support block, and the gas discharge from the corresponding guide box. When the support block spring is compressed, the gas in the corresponding guide box will be discharged through the venting channel and the valve stem channel, thus achieving buffering and shock absorption of the weight movement. When the weight has a large displacement relative to the weight transfer frame, the control valve stem moves upward, and the cross-sectional area of ​​the valve stem channel in the venting channel becomes smaller, which is equivalent to a smaller effective venting cross-sectional area of ​​the venting channel, improving the air pressure buffering capacity. As the weight continues to move, the control valve stem will completely block the venting channel. At this time, the front guide box is in a closed state, and the inner cavity of the front guide box is equivalent to a gas spring, achieving maximum elastic buffering.

[0031] The weight transfer rack in this invention provides effective elastic cushioning even when handling a one-ton weight, preventing rigid collisions between the weight and the groove, and protecting both the weight and the groove sidewalls. This helps reduce calibration accuracy degradation caused by damage to the weight or groove sidewalls. During on-site calibration, the weight transfer rack needs to be removed, and the weight placed directly into the groove for normal calibration.

[0032] The implementation of a weight transfer rack, for example Figures 1-5 As shown, the specific structure of the weight transfer rack is the same as that described in the above-mentioned weight transfer system embodiment, and will not be described in detail here.

[0033] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the devices or elements involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0035] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A weight transfer system for a container overload / off-center load detection device, comprising a transfer vehicle and a calibration box placed on the transfer vehicle during transfer, wherein the bottom plate of the calibration box is provided with multiple grooves, and further comprising weights placed in the corresponding grooves for calibration, characterized in that, It also includes a weight transfer frame for placing the weight between the weight and the groove during the transfer process. The bottom of the weight transfer frame has a positioning part for positioning the weight into the groove. The front side of the positioning part contacts and cooperates with the front wall of the groove, and the rear side of the positioning part contacts and cooperates with the rear wall of the groove. The upper end of the weight transfer frame is equipped with a front support block and a rear support block for guiding movement in the front and rear directions. The front support block and the rear support block are made of flexible material. The bottom of the front support block and the rear support block are in sliding contact with the upper end of the weight transfer frame. Each of the front support block and the rear support block is connected with a corresponding support block return spring. The rear end of the front support block is provided with a front support slope for contacting and cooperating with the front end of the bottom of the weight, and the front end of the rear support block is provided with a rear support slope for contacting and cooperating with the rear end of the bottom of the weight.

2. The weight transfer system according to claim 1, characterized in that: The top front end of the weight transfer rack is provided with a front guide box, in which a front support block base is mounted and guided to move along the front-back direction. The front support block is fixed on the front support block base, and a return spring for the support block located at the front is located between the front support block base and the front wall of the front guide box. The top rear end of the weight transfer rack is provided with a rear guide box, in which a rear support block base is mounted and guided to move along the front-back direction. The rear support block is fixed on the rear support block base, and a return spring for the support block located at the rear is located between the rear support block base and the rear wall of the rear guide box.

3. The weight transfer system according to claim 2, characterized in that: A front spring guide rod is fixed on the base of the front support block. The return spring of the support block located at the front is sleeved on the front spring guide rod. A venting channel is provided on the front wall of the front guide box. A control valve rod that passes through the venting channel is guided and moved along the vertical direction on the front guide box. The control valve rod is provided with a valve rod channel for use with the venting channel. As the control valve rod moves from bottom to top, the cross-sectional area of ​​the valve rod channel in the venting channel gradually decreases. As the front spring guide rod moves forward, the front spring guide rod drives the control valve rod to move from bottom to top through the wedge surface.

4. The weight transfer system according to claim 3, characterized in that: The lower channel wall of the valve stem passage is a sloping wall structure that gradually slopes upward from back to front.

5. A weight transfer rack, characterized in that: The bottom of the weight transfer frame has a positioning part for positioning and inserting into the groove. The front side of the positioning part contacts and cooperates with the front wall of the groove, and the rear side of the positioning part contacts and cooperates with the rear wall of the groove. The upper end of the weight transfer frame is equipped with a front support block and a rear support block for guiding movement in the front and rear directions. The front support block and the rear support block are made of flexible material. The bottom of the front support block and the rear support block are in sliding contact with the upper end of the weight transfer frame. Each of the front support block and the rear support block is connected with a corresponding support block return spring. The rear end of the front support block is provided with a front support slope for contacting and cooperating with the front end of the bottom of the weight, and the front end of the rear support block is provided with a rear support slope for contacting and cooperating with the rear end of the bottom of the weight.

6. The weight transfer rack according to claim 5, characterized in that: The top front end of the weight transfer rack is provided with a front guide box, in which a front support block base is mounted and guided to move along the front-back direction. The front support block is fixed on the front support block base, and a return spring for the support block located at the front is located between the front support block base and the front wall of the front guide box. The top rear end of the weight transfer rack is provided with a rear guide box, in which a rear support block base is mounted and guided to move along the front-back direction. The rear support block is fixed on the rear support block base, and a return spring for the support block located at the rear is located between the rear support block base and the rear wall of the rear guide box.

7. The weight transfer rack according to claim 6, characterized in that: A front spring guide rod is fixed on the base of the front support block. The return spring of the support block located at the front is sleeved on the front spring guide rod. A venting channel is provided on the front wall of the front guide box. A control valve rod that passes through the venting channel is guided and moved along the vertical direction on the front guide box. The control valve rod is provided with a valve rod channel for use with the venting channel. As the control valve rod moves from bottom to top, the cross-sectional area of ​​the valve rod channel in the venting channel gradually decreases. As the front spring guide rod moves forward, the front spring guide rod drives the control valve rod to move from bottom to top through the wedge surface.

8. The weight transfer rack according to claim 7, characterized in that: The lower channel wall of the valve stem passage is a sloping wall structure that gradually slopes upward from back to front.

Images