A simulated loading method for tank vehicles

Abstract

The present invention provides a simulated loading method for a tank vehicle, which includes the following steps: according to the average density of a target carrying medium and the carrying mass of the target carrying medium, the required number of load balls with different densities is calculated; the load balls at least include a first load ball with a density greater than that of the target carrying medium and a second load ball with a density less than that of the target carrying medium; according to the density distribution of the target carrying medium when it is in the carrying tank and the density of the multiple load balls, the loading distribution positions of the multiple load balls in the vertical direction are obtained; the multiple load balls are loaded into the loading tank of the tank vehicle in a loading sequence corresponding to the loading distribution positions; and the tank vehicle is tested. By adding multiple load balls with different densities into the carrying tank, the average density and carrying mass of the target carrying medium can be achieved, and at the same time, the multiple load balls can be controlled to form a loading state in the carrying tank with a center of mass height and a force state closer to that of the target carrying medium.

Description

Technical Field

[0001] The invention relates to the field of vehicle load simulation test, and in particular to a simulated loading method for a tank vehicle. Background Art

[0002] When testing cars and trailers, all vehicles will be subject to test items under full load conditions, such as dynamic tests, economic tests, braking performance tests, handling stability tests, roll stability tests, etc. For ordinary box-type vehicles that generally carry solid goods, the simulated loads required for the test are usually sandbags, iron blocks, etc., which are easy to obtain or prepare during the test. The fixed installation of the load is also easy to achieve consistency with the state when carrying actual goods in actual use conditions, and at the same time will not cause damage to the vehicle and affect the safety of the test.

[0003] However, for tank vehicles used to transport liquid goods, the test simulation load obviously cannot be replaced by sandbags or iron blocks. On the one hand, the actual loading and unloading of such tank vehicles carrying liquid goods are achieved by using a dedicated on-board pump for pumping and drainage, and common loads such as sandbags and iron blocks cannot be loaded and unloaded. On the other hand, even if loading and unloading are achieved through manual means, the different densities and center of mass heights between the simulated load and the actual transport medium will have a great impact on the test results of the prototype vehicle, making it impossible to evaluate the true performance of the vehicle based on the test results. Summary of the invention

[0004] The main purpose of the present invention is to provide a simulated loading method for a tank vehicle, aiming to solve the problem in the related art that it is difficult to effectively evaluate the actual performance of the vehicle in the liquid cargo load simulation test.

[0005] The present invention provides a simulated loading method for a tank vehicle, which adopts the following technical solution:

[0006] A simulated loading method for a tank vehicle comprises the following steps:

[0007] According to the average density of the target carrying medium and the carrying mass of the target carrying medium, the required number of each of the multiple load balls with different densities is calculated; wherein the load balls at least include a first load ball with a density greater than that of the target carrying medium and a second load ball with a density less than that of the target carrying medium;

[0008] According to the density distribution of the target carrier medium in the carrier tank and the density of the multiple load balls, the loading distribution positions of the multiple load balls in the vertical direction are obtained;

[0009] The plurality of load balls are loaded into the loading tank of the tank vehicle in a loading sequence corresponding to the loading distribution positions.

[0010] In some embodiments, obtaining the loading distribution positions of the multiple load balls in the vertical direction according to the density distribution of the target carrier medium in the carrier tank and the density of the multiple load balls comprises the following steps:

[0011] According to the density distribution of the target carrier medium when it is in the carrier tank, the center of mass height of the target carrier medium in the carrier tank is obtained;

[0012] According to the mass center height, a plurality of loading distribution positions of the load ball in the vertical direction are obtained.

[0013] In some embodiments, according to the average density of the target carrying medium and the carrying mass of the target carrying medium, calculating the required number of each of the plurality of load balls with different densities comprises the following steps:

[0014] The target mass of each load ball is obtained according to the average density of the target carrying medium, the carrying mass of the target carrying medium and the density of each load ball.

[0015] In some embodiments, the target mass of each load ball is obtained according to the average density of the target carrier medium, the carrying mass of the target carrier medium and the density of each load ball.

[0016] Target mass of the first load ball

[0017] Target mass of the second load ball

[0018] Wherein, ρ0 is the average density of the target carrying medium, G0 is the carrying mass of the target carrying medium, ρ1 is the density of the first load ball, and ρ2 is the density of the second load ball.

[0019] In some embodiments, the diameters of the plurality of load balls are the same or different or at least partially different.

[0020] In some embodiments, if the diameters of the two load balls are different, the load ball with a smaller diameter cannot pass through the maximum gap that can be formed when four load balls with larger diameters are in contact with each other.

[0021] In some embodiments, the load ball only includes the first load ball and the second load ball having the same diameter.

[0022] In some embodiments, the first load ball has a density greater than water, and the second load ball has a density less than water.

[0023] In some embodiments, the surface of the load ball is smooth.

[0024] In some embodiments, the load ball has a diameter of 30-40 mm.

[0025] The present invention provides a simulated loading method for a tank vehicle, which achieves an average density and carrying mass close to the target carrying medium by adding a plurality of load balls of different densities into the carrying tank, and at the same time, controls the plurality of load balls through the density distribution of the target carrying medium to form a loading state in the carrying tank whose center of mass height and force state are closer to the target carrying medium, so as to improve the accuracy of subsequent detection results; at the same time, when a spherical structure is selected for load simulation test, common conveying equipment such as a vacuum pump can be used to directly convey the liquid cargo into the tank, and when unloading, the ball can be unloaded through the vehicle's own conveying pump when the ball size is appropriate, thereby greatly reducing the difficulty of the test and improving the test efficiency; in addition, after the load ball is loaded into the carrying tank, based on its spherical characteristic, it can be rolled and laid well in the horizontal direction, so that the density distribution on the horizontal plane is more consistent, which can be closer to the density distribution of the target carrying medium in the carrying tank, and finally make the performance test results of the vehicle under a certain load state more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the steps of the simulated loading method of a tank vehicle involved in the present invention.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0029] For tank vehicles used to carry liquid goods, the test simulation load obviously cannot be replaced by sandbags or iron blocks. On the one hand, the actual loading and unloading of tank vehicles are all achieved by pumping and draining with a dedicated on-board pump, and common loads such as sandbags and iron blocks cannot be loaded and unloaded. On the other hand, even if loading and unloading is achieved through manual means, the test results of the prototype vehicle will be greatly affected by the different densities and center of mass heights of the simulated load and the actual transport medium, making it impossible to evaluate the actual performance of the vehicle based on the test results. In theory, if the actual transported items can be used as loads during the test, the actual performance of the vehicle can be best reflected, but objectively it is almost impossible to achieve, because the actual transported media of tank vehicles (such as fuel, chemical reagents, etc.) often have safety and environmental risks such as fire, explosion, toxicity, and environmental pollution, and the cost is extremely high.

[0030] Therefore, an embodiment of the present invention provides a simulated loading method for a tank vehicle, the main point of the invention is that by adding a variety of load balls with different densities into the carrying tank, an average density and carrying mass close to the target carrying medium can be achieved, and at the same time, through the density distribution of the target carrying medium, the various load balls can be controlled to form a loading state in the carrying tank whose center of mass height and force state are closer to the target carrying medium, so as to improve the accuracy of subsequent detection results; at the same time, when a spherical structure is selected for load simulation test, common conveying equipment such as a vacuum pump can be used to directly convey it into a liquid cargo tank, and when unloading, it can also be unloaded through the vehicle's own conveying pump when the ball size is appropriate, thereby greatly reducing the difficulty of the test and improving the test efficiency; in addition, after the load ball is loaded into the carrying tank, based on its spherical characteristics, it can be rolled and laid well in the horizontal direction, so that the density distribution on the horizontal plane is more consistent, which can be closer to the density distribution of the target carrying medium in the carrying tank, and ultimately make the performance test results of the vehicle under a certain load state more accurate.

[0031] Reference Figure 1 , an embodiment of the present invention provides a simulated loading method for a tank vehicle.

[0032] A simulated loading method for a tank vehicle comprises the following steps:

[0033] S100, calculating the required number of each of a plurality of load balls with different densities according to the average density of the target carrying medium and the carrying mass of the target carrying medium; wherein the load balls at least include a first load ball with a density greater than that of the target carrying medium and a second load ball with a density less than that of the target carrying medium;

[0034] S200, obtaining the loading distribution positions of the multiple load balls in the vertical direction according to the density distribution of the target carrying medium when the target carrying medium is in the carrying tank and the density of the multiple load balls;

[0035] S300, loading various load balls into a loading tank of a tank vehicle in a loading sequence corresponding to the loading distribution positions.

[0036] Among them, for the load balls with different densities used in step S100, there can be at least two different numbers of types to choose from in different embodiments, which can be specifically determined according to external factors such as the target carrier medium and the carrier tank. It can be understood that a variety of load balls are needed to achieve that the average density of the load balls finally loaded into the carrier tank is equal to or close to the average density of the target carrier medium. Furthermore, in the subsequent detection process, for the load balls loaded into the carrier tank according to the loading distribution position, their center of mass height and the stress state of the vehicle can be closer to the actual target carrier medium.

[0037] With this arrangement, by adding a variety of load balls with different densities into the carrying tank, an average density and carrying mass close to the target carrying medium can be achieved. At the same time, through the density distribution of the target carrying medium, the various load balls can be controlled to form a loading state in the carrying tank with a center of mass height and a force state closer to the target carrying medium, so as to improve the accuracy of subsequent test results. At the same time, when a spherical structure is selected for load simulation test, common conveying equipment such as a vacuum pump can be used to directly convey it into a liquid cargo tank. When unloading, the ball can also be unloaded through the vehicle's own conveying pump when the ball size is appropriate, thereby greatly reducing the difficulty of the test and improving the test efficiency. In addition, after the load ball is loaded into the carrying tank, based on its spherical characteristics, it can be rolled and laid in the horizontal direction better, so that the density distribution on the horizontal plane is more consistent, which can be closer to the density distribution of the target carrying medium in the carrying tank, and ultimately the performance test results of the vehicle under a certain load state are more accurate.

[0038] Further, in some preferred embodiments, the step S200, obtaining the loading distribution positions of the multiple load balls in the vertical direction according to the density distribution of the target carrying medium when it is in the carrying tank and the density of the multiple load balls, comprises the following steps:

[0039] S210, obtaining the centroid height of the target carrier medium in the carrier tank according to the density distribution of the target carrier medium when the target carrier medium is in the carrier tank;

[0040] S220. Obtaining a plurality of loading distribution positions of the load balls in the vertical direction according to the mass center height.

[0041] Among them, the density distribution of the target carrier medium in the carrier tank in step S210 can be determined in advance by the technician according to the properties of the target carrier medium. Furthermore, the center of mass height of the target carrier medium in the carrier tank can be further calculated based on the density distribution, and the loading distribution position of the load ball can be calculated in step S220 based on the center of mass height, so that the center of mass height of the load balls of various densities when loaded into the carrier tank can be closer to the real center of mass height of the target carrier medium. For chemical liquids whose density can be regarded as uniformly distributed in static state, such as petroleum, the center of mass height will be in the central area of ​​the target carrier medium. Therefore, it is necessary to adjust the distribution positions of various load balls to a symmetrical state; and for mixed liquids or mixtures whose density will gradually increase vertically downward in static state, such as mortar, the center of mass height will be lower.

[0042] With this arrangement, when the method provided by the present application is used in the loading process before the vehicle load performance test, the vehicle state is closer to the actual state after the vehicle is loaded with the target carrying medium.

[0043] Further, in some preferred embodiments, the step S100, calculating the required number of load balls with different densities according to the average density of the target carrying medium and the carrying mass of the target carrying medium, comprises the following steps:

[0044] S110, obtaining a target mass of each load ball according to an average density of the target carrying medium, a carrying mass of the target carrying medium, and a density of each load ball.

[0045] Specifically, in step S110, the target mass of each load ball is obtained according to the average density of the target carrying medium, the carrying mass of the target carrying medium and the density of each load ball.

[0046] Target mass of the first load ball

[0047] Target mass of the second load ball

[0048] Wherein, ρ0 is the average density of the target carrying medium, G0 is the carrying mass of the target carrying medium, ρ1 is the density of the first load ball, and ρ2 is the density of the second load ball.

[0049] After knowing the target masses of the two load balls, the load balls of the target masses can be quickly obtained by weighing, calculating, etc.

[0050] Further, in some preferred embodiments, the diameters of the plurality of load balls are the same or different or at least partially different.

[0051] For some embodiments in which there are two load balls with different diameters, in order to further ensure that the two layers of load balls with different diameters are not mixed together when stacked and laid, resulting in a density distribution that does not meet the design expectations, the present application further provides in some embodiments that if the diameters of the two load balls are different, the load ball with a smaller diameter cannot pass through the maximum gap that can be formed by four load balls with larger diameters when they are in contact with each other.

[0052] Specifically, in this embodiment, the load balls only include the first load ball and the second load ball of the same diameter, so as to realize rapid calculation and arrangement applicable to most target load media, reduce the difficulty of simulated loading, and improve the efficiency of subsequent vehicle performance testing under a certain load.

[0053] In this embodiment, the target carrier medium is a uniform density medium, and the load balls are only the first density ball and the second density ball. When executing step S300, multiple load balls are loaded into the loading tank of the tank vehicle in the loading order corresponding to the loading distribution position, specifically: the second load ball with a mass of 0.5G2 is sucked from the top entrance of the carrying tank to the bottom of the tank body by a vacuum delivery pump. After the second load ball enters the carrying tank, it rolls freely in the carrying tank and is evenly distributed layer by layer due to the automatic balancing function of the ball. After all the second load balls are stable, the first load ball with a mass of G1 is sucked from the top entrance of the tank body to the upper part of the second load ball by a vacuum delivery pump. After all the second density balls are stable, the remaining second load ball with a mass of 0.5G2 is input into the upper part of the carrying tank by a vacuum delivery pump. Since the diameters of the second load ball and the first load ball are equal, all load balls roll freely and are closely arranged, and there will be no misalignment after being stacked in layers. At this time, the mass of all load balls loaded in the tank body and the overall center of mass height are consistent with those when the actual freight medium is loaded.

[0054] In order to ensure that various load balls can be smoothly transported by the vacuum delivery pump, further, the diameter of each load ball is 30 to 40 mm.

[0055] Furthermore, in some preferred embodiments, the density of the first load ball is greater than that of water, and the density of the second load ball is less than that of water. In this way, after the test, all the load balls are sucked out of the tank by a vacuum delivery pump and injected into a storage container filled with tap water. The first load ball sinks to the bottom, and the second load ball automatically floats on the water surface to achieve rapid separation of the two balls, and can be reused by subpackaging and storage.

[0056] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0057] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0058] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present invention.

[0059] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A simulated loading method for a tank vehicle, characterized in that: It includes the following steps: According to the average density of the target carrying medium and the carrying mass of the target carrying medium, the required number of each of the multiple load balls with different densities is calculated; wherein the load balls at least include a first load ball with a density greater than that of the target carrying medium and a second load ball with a density less than that of the target carrying medium; According to the density distribution of the target carrier medium when it is in the carrier tank, the center of mass height of the target carrier medium in the carrier tank is obtained; According to the mass center height, a plurality of loading distribution positions of the load ball in the vertical direction are obtained; The plurality of load balls are loaded into the loading tank of the tank vehicle in a loading sequence corresponding to the loading distribution positions.

2. The simulated loading method of a tank vehicle according to claim 1, characterized in that: The method of calculating the required number of load balls with different densities according to the average density of the target carrying medium and the carrying mass of the target carrying medium comprises the following steps: The target mass of each load ball is obtained according to the average density of the target carrying medium, the carrying mass of the target carrying medium and the density of each load ball.

3. The simulated loading method of a tank vehicle according to claim 1, characterized in that: According to the average density of the target carrier medium, the carrying mass of the target carrier medium and the density of each load ball, the target mass of each load ball is obtained. Target mass of the first load ball Target mass of the second load ball Wherein, ρ0 is the average density of the target carrying medium, G0 is the carrying mass of the target carrying medium, ρ1 is the density of the first load ball, and ρ2 is the density of the second load ball.

4. The simulated loading method of a tank vehicle according to claim 1, characterized in that: The diameters of the plurality of load balls are the same or different or at least partially different.

5. The simulated loading method of a tank vehicle according to claim 4, characterized in that: If the diameters of the two load balls are different, the load ball with a smaller diameter cannot pass through the maximum gap that can be formed when four load balls with larger diameters are in contact with each other.

6. The simulated loading method of a tank vehicle according to claim 1, characterized in that: The load ball includes only the first load ball and the second load ball having the same diameter.

7. The simulated loading method of a tank vehicle according to claim 6, characterized in that: The first load ball has a density greater than that of water, and the second load ball has a density less than that of water.

8. The simulated loading method of a tank vehicle according to claim 1, characterized in that: The surface of the load ball is arranged to be smooth.

9. The simulated loading method of a tank vehicle according to claim 1, characterized in that: The load ball has a diameter of 30 to 40 mm.

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