Magnetic levitation vehicle weighing device and method

Abstract

The invention discloses a magnetic levitation vehicle weighing device and method, the magnetic levitation vehicle weighing device comprises a test tool, a weighing sensor and a data collector, the test tool comprises a weighing sensor mounting seat, and the weighing sensor is connected with the data collector; when the magnetic levitation vehicle is weighed, the skid is detached, the weighing sensor and the test tool are installed on the skid seat, the test tool and the skid are in one-to-one correspondence, and the weight of the test tool and the weight of the skid are consistent. According to the magnetic levitation vehicle weighing device and method disclosed by the invention, an existing skid is replaced by the test tool, so that the weight of the whole vehicle is transmitted to the static suspension track through the test tool and the weighing sensor. The weight data borne by each skid of the maglev vehicle can be obtained through the weight values measured by each weighing sensor, and the weight data is summarized to form the weight of the whole vehicle, so that the system has the characteristics of convenience in operation, convenience in weighing and the like. The weighing sensor is calibrated through the preset weight before the test, and the measurement result is corrected through the calibration coefficient after the test, so that the measurement precision can be improved.

Description

Technical Field

[0001] This application relates to the technical field of maglev vehicles, and more specifically, to a maglev vehicle weighing device and method. Background Art

[0002] The existing weighing scheme for high-speed maglev vehicles is to weigh the upper body components of the vehicle body by a hanging scale when the vehicle body is lifted by a crane after the overall vehicle assembly. Components such as the suspension frame, electromagnets, and skirt plates at the lower part of the vehicle are weighed separately, and finally the weights are summarized to form the total vehicle weight. The existing weighing scheme requires multiple weighing operations and manual summarization, resulting in large errors. Moreover, it can only weigh the entire vehicle and cannot measure the vehicle weight distribution and the load-bearing data of each suspension frame.

[0003] The patent with the publication number CN203937688U provides a weighing track for medium and low-speed maglev vehicles and several weighing modules installed on the track. The weighing module includes a sensor assembly and a height adjustment assembly. The force sensor moves up and down with the height adjustment assembly. When weighing, it is impossible to ensure that the heights of all the force sensors of the whole vehicle are the same, resulting in problems such as large measurement errors and poor accuracy.

[0004] The patent with the publication number CN112345052A provides a medium and low-speed maglev train, a portable static weighing system and method. The weighing sensors are arranged at the gaps between the lower part of each car body skid of the medium and low-speed maglev train and above the F rail. When the vehicle lands, each car body skid just lands on each corresponding weighing sensor, and the weighing sensors are used to collect the weight information of the medium and low-speed maglev train. This scheme requires placing the weighing sensors at the gaps between the lower part of the car body skid and above the F rail when the vehicle is in the powered suspension state, which has limited space, inconvenient operation and high risk.

[0005] The patent with the publication number CN116222722A discloses a maglev vehicle weighing and spring load measurement structure and measurement method, including a track system, a lifting mechanism, and a distance sensor. The track system includes a track and a skid support track. The track includes a fixed track and a movable track along its extension direction, and a force sensor is arranged on the movable track; the lifting mechanism is connected to the movable track; the distance sensor is used to detect the lifting distance of the lifting mechanism; the skid support track is used to support the vertical skid; the movable track is used to lift the bottom of the air spring, and the movable track is also used to lift the bracket body. This scheme requires setting components such as a weighing track, a lifting mechanism, and a distance sensor on the track, with a complex structure, high construction difficulty and high overall cost. In addition, when weighing and constructing, it is impossible to ensure that the heights of all the force sensors of the whole vehicle are the same, resulting in problems such as large measurement errors and poor accuracy.

[0006] Therefore, how to improve the problems of inconvenient weighing and large measurement errors of maglev vehicles has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a maglev vehicle weighing device and method to improve the problems of inconvenient weighing and large measurement errors of maglev vehicles.

[0008] To achieve the above purpose, this application provides the following technical solutions: A maglev vehicle weighing device includes a test fixture, a weighing sensor, and a data collector. The test fixture includes a weighing sensor mounting base at the bottom. The weighing sensor can be installed on the weighing sensor mounting base, and the weighing sensor is connected to the data collector; The maglev vehicle includes a suspension frame, a skid seat, a skid, and skid stoppers. The skid seat is installed on the suspension frame. The skid is detachably installed on the skid seat. The skid stoppers are detachably connected to the skid seat and are arranged on both sides of the skid to limit the skid; When weighing the maglev vehicle, the skid is removed, and the test fixture with the weighing sensor installed is installed on the skid seat. The test fixtures correspond to the skids one by one, and the weight of the test fixture is the same as the weight of the skid.

[0009] Optionally, in the above maglev vehicle weighing device, the test fixture includes a test fixture body and a weighing sensor mounting base. The weighing sensor mounting base is arranged at the bottom of the test fixture body; The test fixture body includes a number of first card slots, which cooperate with the blocks on the skid seat.

[0010] Optionally, in the above maglev vehicle weighing device, the test fixture body includes a plurality of connecting blocks and a connecting plate assembly. The first card slots are opened on the connecting blocks; The connecting plate assembly includes a bottom plate, side plates, and end plates. The side plates are respectively arranged on both sides in the extending direction of the first card slots, are connected to the connecting blocks, the side plates are connected to the bottom plate, and the weighing sensor mounting base is arranged at the bottom of the bottom plate; The two connecting blocks arranged at both ends are respectively connected to the bottom plate through the end plates.

[0011] Optionally, in the above maglev vehicle weighing device, it further includes a reinforcing plate. The extending direction of the reinforcing plate is the same as the extending direction of the side plates. The reinforcing plate is arranged between the two side plates and is connected to the bottom plate. Grooves matching the connecting blocks are arranged on the reinforcing plate.

[0012] Optionally, in the above maglev vehicle weighing device, the weighing sensor mounting base includes a main body portion and a flange arranged at the edge of the main body portion. A limiting portion of the weighing sensor is arranged on the flange.

[0013] Optionally, in the above maglev vehicle weighing device, the weighing sensor and the data collector perform data transmission through a wired connection method. A plurality of connection cable passing ports are arranged on the flange; or, The load cell and the data collector transmit data through a wireless connection.

[0014] A maglev vehicle weighing method, using the above-mentioned maglev vehicle weighing device, includes the following steps: S10. Assemble the maglev vehicle. The maglev vehicle enters the static suspension track to complete the assembly. S20. Install the test tooling and the load cell. Disassemble the skid, and install the test tooling with the load cell installed thereon to the skid seat. The test tooling and the skid seat are in one-to-one correspondence. S30. Connect each load cell and the data collector. S40. Obtain the vehicle weight. The data collector receives the weighing values of each load cell and calculates the vehicle weight.

[0015] Optionally, in the above-mentioned maglev vehicle weighing method, the step of installing the load cell specifically includes: S21. Disassemble the skid stop iron located inside the static suspension track, use the jacking assembly to support the skid seat, and disassemble the skid. S22. Install the test tooling and the load cell, and remove the jacking assembly.

[0016] Optionally, in the above-mentioned maglev vehicle weighing method, the load cell adopts a pressure sensor. Before the step of installing the load cell, it includes a step of calibrating the load cell, which specifically includes: obtaining the pressure values of each load cell under a preset weight, and obtaining the calibration coefficients of each load cell.

[0017] Optionally, in the above-mentioned maglev vehicle weighing method, the step of obtaining the vehicle weight specifically includes: Measure multiple times to obtain the average pressure value of each load cell, obtain the weight value of each load cell, and obtain the vehicle weight.

[0018] As can be seen from the above solution, the maglev vehicle weighing device and method disclosed in this application use a test tooling to replace the existing skid. The weighing sensors are installed on the weighing sensor mounting seats at the bottom of the test tooling, so that the vehicle weight is transmitted to the static suspension track through the test tooling and the weighing sensors. The weight values measured by each weighing sensor can obtain the weight values borne by each skid 23 of the maglev vehicle 20. After summarization, the vehicle weight of the maglev vehicle can be obtained, and at the same time, the force conditions and load weight values of each suspension frame can be obtained. It has the characteristics of simple and fast operation and convenient weighing, providing data support for carrying out work such as maglev vehicle weight balance and suspension frame fatigue performance analysis; the weight of the test tooling is the same as that of the skid, and all weighing sensors are installed on the test tooling, which can ensure that the heights of all weighing sensors are consistent, improving the measurement accuracy and precision; the data collector is connected to the weighing sensors, and the calculation is simple and fast, reducing calculation errors; weighing can be carried out using the existing static suspension track, reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the test tooling disclosed in the embodiment of the present application; Figure 2 It is an exploded view of the test tooling disclosed in the embodiment of the present application; Figure 3 It is a schematic diagram of the skid disassembly state disclosed in the embodiment of the present application; Figure 4 It is a schematic diagram of the installation of the test tooling and the weighing sensors disclosed in the embodiment of the present application; Figure 5 It is a schematic diagram of the weighing sensor layout disclosed in the embodiment of the present application; Figure 6 It is a flowchart of the maglev vehicle weighing method disclosed in the embodiment of the present application; Figure 7 It is a flowchart of the installation of the test tooling and the weighing sensors disclosed in the embodiment of the present application.

[0021] Among them, 10 is a test tooling, 11 is a weighing sensor mounting seat, 111 is a main body part, 112 is a flange, 113 is a connection cable passing port, 12 is a test tooling body, 121 is a connection block, 122 is a connection plate assembly, 1221 is a bottom plate, 1222 is a side plate, 1223 is a reinforcing plate, 1224 is an end plate; 123 is a first card slot; 20 is a maglev vehicle, 21 is a suspension frame, 22 is a skid seat, 23 is a skid, 24 is a skid stop iron; 30 is a weighing sensor; 40 is a static suspension track. Specific implementation manner

[0022] Related explanations: 1. A pressure sensor is a device or apparatus that senses a pressure signal and can convert the pressure signal into an available output electrical signal according to a certain rule.

[0023] 2. A data collector is an instrument and equipment for real-time monitoring, data acquisition and recording. It can be used in various fields, such as physics, chemistry, electronics, computer science, etc. This device can receive and process the data collected by various sensors and signal sources, and convert it into digital signals for convenient data analysis and processing by a computer.

[0024] The core of this application is to disclose a maglev vehicle weighing device and method to improve the problems of inconvenient weighing and large measurement errors of maglev vehicles.

[0025] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of this application.

[0026] As Figure 4 shown, the embodiment of this application discloses a maglev vehicle weighing device, including a test tooling 10, a weighing sensor 30 and a data collector (not shown in the figure). The test tooling 10 includes a weighing sensor mounting seat 11. Specifically, as Figure 1 shown, the weighing sensor 30 can be installed on the weighing sensor mounting seat 11. The weighing sensor 30 is connected to the data collector, and the data collector can receive the weighing values of each weighing sensor 30 and calculate the vehicle weight.

[0027] As Figure 3As shown in the figure, the maglev vehicle 20 includes a suspension frame 21, a skid seat 22, a skid 23 and a skid stop 24. The skid seat 22 is installed on the suspension frame 21. The skid 23 is detachably installed on the skid seat 22. The skid stop 24 is detachably connected to the skid seat 22 and is arranged on both sides of the skid 23 to limit the skid 23. When weighing the maglev vehicle, the skid 23 is removed, the test tooling 10 is installed on the weighing sensor mounting seat 11, and the test tooling 10 is installed on the skid seat 22. The test tooling 10 corresponds to the skid 23 one by one, and the weight of the test tooling 10 is the same as that of the skid 23 to ensure the accuracy of the vehicle weight measurement.

[0028] During use, in the power-off state of the maglev vehicle, the air springs of each suspension frame 21 are in the inflated state. The skid stop 24 on the side close to the static suspension track 40 (the tooling for the vehicle lowering process) is removed using the central space of the static suspension track 40 to release the limit on the skid 23, and then the skid 23 is removed. The weighing sensor 30 and the test tooling 10 are installed on the skid seat 22. The weight of the whole vehicle is transmitted to the static suspension track 40 through the test tooling 10 and the weighing sensor 30. The measured weight values of each weighing sensor 30 are respectively transmitted to the data collector, and the total vehicle weight can be obtained through the summary by the data collector. At the same time, according to the weighing values of each weighing sensor 30, the weight borne by each skid 23 can be obtained, and the total vehicle weight of the maglev vehicle 20 can be obtained through the multi-point distribution method.

[0029] The maglev vehicle weighing device disclosed in the embodiment of the present application uses the test tooling 10 to replace the existing skid 23. The weighing sensor 30 is installed on the weighing sensor mounting seat 11 at the bottom of the test tooling 10, so that the weight of the whole vehicle is transmitted to the static suspension track 40 through the test tooling 10 and the weighing sensor 30. The weight values of each skid 23 of the maglev vehicle 20 can be obtained from the weight values measured by each weighing sensor 30. After summarization, the total vehicle weight of the maglev vehicle 20 can be obtained. At the same time, the force conditions and load weight values of each suspension frame 21 can be obtained. It has the characteristics of simple and fast operation and convenient weighing, providing data support for carrying out work such as maglev vehicle weight balance and suspension frame fatigue performance analysis; the weight of the test tooling 10 is the same as that of the skid 23, and all weighing sensors 30 are installed on the test tooling 10, which can ensure that the heights of all weighing sensors 30 are the same, improving the measurement accuracy and precision; the data collector is connected to the weighing sensor, and the calculation is simple and fast, reducing the calculation error; weighing can be carried out using the existing static suspension 40 track, reducing costs.

[0030] Further, to ensure the accuracy of the test results, each weighing sensor 30 is calibrated one by one before the test. Specifically, a preset weight can be applied to each weighing sensor 30, and calibration can be performed according to the output weight value of each weighing sensor 30. The preset weight value can be changed and measured multiple times. When the measurement error is within the preset error range, the weighing sensor 30 is qualified. When the measurement error exceeds the preset error range, it can be replaced for use, or the calibration coefficient can be obtained based on the preset weight / measured weight value. When measuring the weight of the maglev vehicle, the actual test weight value can be obtained based on the calibration coefficient and the test data.

[0031] Further, in some specific embodiments, the skid 23 and the skid seat 22 are preferably connected by a snap connection. The skid seat 22 is provided with a snap block, and the skid 23 is provided with a second slot that cooperates with the snap block. The second slot is preferably a dovetail slot, and the cross-sectional shape of the second slot is trapezoidal, with a wider width at the bottom and a narrower width at the top. This solution can achieve the self-locking of the skid 23 and the skid seat 22, ensure the firmness of the connection between the two, and reduce the possibility of loosening. The skid stop 24 (in the shape of a long strip) is connected to the skid seat 22 by a snap connection or a bolt connection, and the bolt connection is preferably used. Specifically, the skid stop 24 is provided with a through hole that cooperates with the bolt, and the bolt passes through the through hole and is threadedly engaged with the threaded hole. When the first slot 123 on the skid 23 is snap-connected to the snap block on the skid seat 22 in place, the skid stop 24 is installed on the skid seat 22 through bolts. When it is necessary to disassemble the skid 23, the skid stop 24 can be disassembled by a tool (such as an Allen wrench), and then the skid 23 can be removed. Subsequently, the test fixture 10 is installed on the skid seat 22. The size of the test fixture 10 is preferably the same as the size of the skid 23.

[0032] Further, as Figure 1 shown, the test fixture 10 includes a test fixture body 12 and a weighing sensor mounting seat 11. The weighing sensor mounting seat 11 is provided at the bottom of the test fixture body 12. Specifically, a detachable connection method or a non-detachable connection method can be used. To ensure the firmness of the connection, a non-detachable connection method is preferably used, such as a welded connection. The test fixture body 12 includes a plurality of first slots 123, and the first slots 123 cooperate with the snap blocks on the skid seat 22. The shape of the first slots 123 is the same as the shape of the second slots to facilitate the installation of the test fixture 10 and the skid seat 22.

[0033] Further, as Figure 2As shown in the figure, the test tooling body 12 includes a plurality of connecting blocks 121 and a connecting plate assembly 122. A first card slot 123 is formed on the connecting block 121, and the first card slot 123 cooperates with the card block on the skid base 22. The connecting plate assembly 122 includes a bottom plate 1221, side plates 1222 and end plates 1224. The side plates 1222 are respectively arranged on both sides of the extension direction of the first card slot 123 (the width direction of the maglev vehicle 20) and are connected to the connecting block 121, that is, the side plates 1222 extend along the length direction of the maglev vehicle 20. Grooves matching the first card slot 123 are formed on each side plate 1222 so that the first card slot 123 penetrates along the width direction of the maglev vehicle. The side plates 1222 are connected to the bottom plate 1221. The weighing sensor mounting seat 11 is arranged at the bottom of the bottom plate 1221. The two connecting blocks 121 arranged at both ends (both ends along the vehicle body length direction) are respectively connected to the bottom plate 1221 through the end plates 1224.

[0034] Specifically, the connecting block 121 and the side plate 1222 are preferably connected by welding, the connecting block 121 and the end plate 1224 are preferably connected by welding, the side plate 1222 and the bottom plate 1221 are preferably connected by welding, the end plate 1224 and the bottom plate 1221 are preferably connected by welding. The bottom plate 1221, the side plates 1222 and the end plates 1224 are preferably made of steel plates, and the connecting block 121 is preferably a dovetail groove iron to meet the strength requirements for supporting the weight of the whole vehicle. To further improve the test accuracy, the upper surface of the test tooling 10 is parallel to the bottom surface, the bottom surface of the first card slot 123 is parallel to the bottom plate 1221, and the bottom surface of the first card slot 123 is parallel to the bottom surface of the weighing sensor mounting seat 11 so that the gravity direction of the vehicle body is perpendicular to the sensing surface of the weighing sensor 30, and each test tooling 10 is the same.

[0035] Furthermore, as Figure 2 shown, to improve the overall structural stability of the test tooling body 12, the test tooling body 12 further includes a reinforcing plate 1223. The extension direction of the reinforcing plate 1223 is the same as that of the side plate 1222, both extending along the length direction of the maglev vehicle 20. The reinforcing plate 1223 is arranged between the two side plates 1222 and is connected to the bottom plate 1221. Grooves matching the connecting block 121 are formed on the reinforcing plate 1223. During processing, the connecting block 121 can be formed by respectively welding and assembling with the bottom plate 1221, the side plates 1222, the reinforcing plate 1223 and the end plate 1224, and then the first card slot 123 is machined. The test tooling body 12 disclosed in the embodiment of the present application has a simple structure and is convenient to process.

[0036] Furthermore, as Figure 2As shown in the figure, the load cell mounting seat 11 includes a main body portion 111 and a flange 112 provided at the edge of the main body portion 111. A limiting portion for the load cell 30 is provided on the flange 112. The main body portion 111 is circular, and the flange 112 is arranged along the periphery of the main body portion 111. During installation, the load cell 30 is installed inside the load cell mounting seat 11, and the limiting portion on the flange 112 can limit the load cell 30 to prevent the load cell 30 from sliding or falling off. The limiting portion can specifically adopt an elastic buckle provided at the edge of the flange 112, or an elastic pressing plate hinged to the flange 112. After the load cell 30 is installed, the elastic pressing plate is pressed on the load cell 30 to prevent the load cell 30 from falling under the action of gravity.

[0037] Further, the load cell 30 and the data collector perform data transmission through a wired connection method. A plurality of connection cable passing ports 113 are provided on the flange 112, or the load cell 30 and the data collector perform data transmission through a wireless connection method. Specifically, as Figure 2 shown in the figure, in the figure, the load cell 30 and the data collector perform data transmission through a wired connection method. A plurality of connection cable passing ports 113 are provided along the circumferential direction of the flange 112. The specific number of the connection cable passing ports 113 can be specifically determined according to actual requirements.

[0038] In addition, as Figure 6 shown in the figure, the embodiment of the present application also discloses a maglev vehicle weighing method, which adopts the above-mentioned maglev vehicle weighing device, and specifically includes the following steps: S10. Assemble the maglev vehicle 20; The maglev vehicle 20 enters the static suspension track 40 to complete the assembly; S20. Install the test tooling 10 and the load cell 30; Disassemble the skid 23, and install the test tooling 10 equipped with the load cell 30 to the installation position of the skid 23 on the skid seat 22. The test tooling 10 corresponds to the skid seat 22 one by one. It should be noted that here, the test tooling 10 can also be installed on the skid seat 22 first, and then the load cell 30 is installed. The specific installation sequence is not specifically limited.

[0039] As Figure 7 shown in the figure, step S20 specifically includes the following steps: S21. Disassemble the skid stop 24 located inside the static suspension track 40, and use the jacking assembly to support the skid seat 22. When the skid seat 22 is lifted off the ground, disassemble the skid 23 towards the inside of the static suspension track 40. Here, since there is an electromagnetic module provided on the outside of the static suspension track 40, it is not convenient to disassemble. Therefore, the skid stop 24 located inside the static suspension track 40 is selected for disassembly. The jacking assembly can specifically select a jack, or other jacking equipment can also be selected.

[0040] S22. Install the test fixture 10 and the weighing sensor 30, and remove the jacking assembly.

[0041] After the skid 23 is disassembled, install the weighing sensor 30 on the test fixture 10, install the test fixture 10 on the skid seat 22, then connect the disassembled skid stop 24 to the skid seat 22, and remove the jacking assembly. The weight of the whole vehicle is transmitted to the static suspension track 40 through the weighing sensor 30. It should be noted that here, it is preferably to install each test fixture 10 one by one, that is, the jacking assembly can be reused after the installation of one test fixture 10 is completed. Since the maglev vehicle 20 is weighed in a power-off state, even if the jacking assembly fails during the disassembly and assembly process of a single skid 23, it will not affect the vehicle state and accidents such as collapse will not occur, so the safety is relatively high. S30. Connect each weighing sensor 30 and the data collector; The weighing sensor 30 and the data collector can be connected through a connecting cable, or the weighing sensor 30 and the data collector can transmit data through a wireless connection method.

[0042] S40. Obtain the weight of the whole vehicle; The data collector receives the weighing values of each weighing sensor 30 and calculates the weight of the whole vehicle. In order to improve the measurement accuracy, the method of taking the average value of multiple measurements can be adopted.

[0043] Furthermore, the weighing sensor 30 is preferably a pressure sensor, and the weight value is obtained by measuring the pressure value. The specific type of the pressure sensor is not specifically limited and can be specifically selected according to actual needs. Before step S20, it includes step S10'. Calibrate the weighing sensor 30, which specifically includes: obtaining the pressure values of each weighing sensor 30 under a preset weight, and obtaining the calibration coefficients of each weighing sensor 30. Here, each weighing sensor 30 is calibrated one by one according to the requirements of the JJG391-2009 "Force Sensor" standard. For example, for any weighing sensor 30, the preset weight is w. After applying this preset weight to this weighing sensor 30, the pressure value measured by the weighing sensor 30 is p, then the calibration coefficient k of this weighing sensor 30 = w / p. In some specific embodiments, the calibration coefficients of the weighing sensors 30 can be determined according to the preliminary weight (calculated) of the maglev vehicle 20 distributed to each weighing sensor 30. The pressure sensor preferably has a measurement range of not less than 125 kN. The pressure sensor has the characteristics of high measurement accuracy and fast response speed, so the pressure sensor is selected.

[0044] At this time, step S40 specifically includes: obtaining the average pressure of each weighing sensor 30 through multiple measurements, obtaining the weight value of each weighing sensor 30 according to the average pressure of each weighing sensor 30 and the calibration coefficient, and summing up the weight values of each weighing sensor 30 to obtain the vehicle weight. Calibrating the weighing sensor 30 with a preset weight before the test and correcting the measurement result with the calibration coefficient after the test can improve the measurement accuracy and ensure the accuracy of the test result.

[0045] As Figure 5 shown, the maglev vehicle shown in the figure includes four suspension frames 21, and four skids 23 are installed around the bottom of each suspension frame 21. When each suspension frame 21 lands, the four skids 23 provide a supporting function to support the vehicle body. There are a total of sixteen skids 23. Therefore, the number of weighing sensors 30 to be installed is sixteen, that is, the number of test fixtures 10 is sixteen. The measuring points 1 - 16 shown in the figure are the specific installation positions of the sixteen weighing sensors 30. In step S10, the calibration coefficients k of the sixteen weighing sensors 30 are k 1 -k 16 . After repeating the measurement for a preset number of times (such as three times or more), calculate the average pressure of each weighing sensor 30. The average pressure of the sixteen weighing sensors 30 is p 1 -p 16 , then the weight value measured by each weighing sensor 30 is w i =p i ×k i (i = 1 - 16), and the total vehicle weight is ∑w 1 -w 16 . It should be noted that the set number here is only an example, and the number and layout position of the weighing sensors 30 can be specifically determined according to the specific number and layout position of the skids 23 of the maglev vehicle 20.

[0046] It should be noted that each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0047] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0048] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0049] In this article, specific examples are used to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the core idea of the present application. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A magnetic levitation vehicle weighing device, characterized in that: The test tool (10) comprises a weighing sensor (30) and a data collector, wherein the test tool (10) comprises a weighing sensor mounting seat (11) located at the bottom, the weighing sensor (30) can be mounted on the weighing sensor mounting seat (11), and the weighing sensor (30) is connected to the data collector; The magnetic levitation vehicle (20) comprises a suspension frame (21), a skid seat (22), a skid (23) and a skid stopper (24); the skid seat (22) is mounted on the suspension frame (21); the skid (23) is detachably mounted on the skid seat (22); the skid stopper (24) is detachably connected to the skid seat (22) and is arranged on both sides of the skid (23) to limit the position of the skid (23); When weighing the magnetic levitation vehicle (20), the sled (23) is disassembled, and the test fixture (10) equipped with the weighing sensor (30) is installed on the sled seat (22), the test fixture (10) and the sled (23) correspond one to one, and the weight of the test fixture (10) is consistent with the weight of the sled (23).

2. The magnetic levitation vehicle weighing device according to claim 1, characterized in that: The test fixture (10) comprises a test fixture body (12) and the weighing sensor mounting seat (11), wherein the weighing sensor mounting seat (11) is arranged at the bottom of the test fixture body (12); The test fixture body (12) comprises a plurality of first card slots (123), wherein the first card slots (123) cooperate with card blocks on the sled seat (22).

3. The magnetic levitation vehicle weighing device according to claim 2, characterized in that: The test fixture body (12) comprises a plurality of connection blocks (121) and a connection plate assembly (122), and the first clamping slot (123) is provided on the connection block (121); The connecting plate assembly (122) comprises a bottom plate (1221), a side plate (1222) and an end plate (1224); the side plates (1222) are respectively arranged on both sides of the extension direction of the first slot (123) and connected to the connecting block (121); the side plates (1222) are connected to the bottom plate (1221); and the weighing sensor mounting seat (11) is arranged at the bottom of the bottom plate (1221); The two connection blocks (121) arranged at the two ends are respectively connected to the bottom plate (1221) via the end plates (1224).

4. The magnetic levitation vehicle weighing device according to claim 3, characterized in that: It also comprises a reinforcing plate (1223), the extension direction of the reinforcing plate (1223) being the same as the extension direction of the side plate (1222), the reinforcing plate (1223) being arranged between the two side plates (1222) and connected to the bottom plate (1221), and the reinforcing plate (1223) being provided with a groove cooperating with the connecting block (121).

5. The magnetic levitation vehicle weighing device according to claim 2, characterized in that: The weighing sensor mounting seat (11) comprises a main body (111) and a flange (112) arranged on the edge of the main body (111), and a limiting portion of the weighing sensor (30) is arranged on the flange (112).

6. The magnetic levitation vehicle weighing device according to claim 5, characterized in that: The weighing sensor (30) and the data collector perform data transmission via a wired connection, and the flange (112) is provided with a plurality of connection cable insertion openings (113); or, The weighing sensor (30) and the data collector perform data transmission via a wireless connection.

7. A method for weighing a magnetic levitation vehicle, characterized in that: The magnetic levitation vehicle weighing device according to any one of claims 1 to 6 comprises the following steps: S10, assembling the maglev vehicle (20), wherein the maglev vehicle (20) enters the static suspension track (40), and the assembly is completed; S20, installing the test fixture (10) and the weighing sensor (30), disassembling the skid (23), and installing the test fixture (10) with the weighing sensor (30) installed on the skid seat (22), wherein the test fixture (10) and the skid seat (22) correspond one to one; S30, connecting each of the weighing sensors (30) and the data collector; S40, obtaining the weight of the entire vehicle, the data collector receiving the weighing values ​​of each weighing sensor (30) and calculating the weight of the entire vehicle.

8. The magnetic levitation vehicle weighing method according to claim 7, characterized in that: The step of installing the weighing sensor (30) specifically comprises: S21, dismantling the skid stopper iron (24) located on the inner side of the static suspension track (40), supporting the skid seat (22) using a jacking assembly, and dismantling the skid (23); S22, installing the test fixture (10) and the weighing sensor (30), and removing the lifting assembly.

9. The magnetic levitation vehicle weighing method according to claim 7, characterized in that: The weighing sensor (30) adopts a pressure sensor. Before the step of installing the weighing sensor (30), a step of calibrating the weighing sensor (30) is included, which specifically includes: obtaining the pressure value of each weighing sensor (30) when it bears a preset weight, and obtaining the calibration coefficient of each weighing sensor (30).

10. The magnetic levitation vehicle weighing method according to claim 9, characterized in that: The step of obtaining the vehicle weight specifically includes: The average pressure value of each weighing sensor (30) is obtained by multiple measurements, the weight value of each weighing sensor (30) is obtained, and the weight of the entire vehicle is obtained.

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