A high-speed railway freight car overload detection device

Abstract

The utility model discloses a high-speed railway freight car overload detection device, which relates to the detection field and solves the technical problem that the existing overload detection device is not suitable for the high-speed train operation. It includes a weighing table, a weighing control system cabinet and a data display platform. The weighing table is fixedly installed on the ground, and the weighing table is connected to the ordinary rail. The weighing table is provided with a continuously divided measurement area, and each of the measurement areas is arranged with a plurality of shear sensors and a plurality of pressure sensors. The signal output ends of the shear sensors and the pressure sensors are connected to the signal acquisition end of the weighing control system cabinet, and the signal output end of the weighing control system cabinet is electrically connected to the signal input end of the data display platform. The utility model can perform overload detection on high-speed freight trains running at speeds below 100 km / h, improve the passing capacity and transportation production efficiency of freight cars, and reduce traction energy consumption and line losses.

Description

Technical Field

[0001] The utility model relates to the detection field, and more specifically, it relates to a high-speed railway freight car overload detection device. Background Art

[0002] The overload and unbalanced load detection device for railway freight cars (hereinafter referred to as the overload and unbalanced load detection device) is used to detect overload, unbalanced load and overweight load of railway freight cars during transportation, and is an important railway freight safety detection equipment. The overload and unbalanced load detection device is supported by sensor technology and information technology, and comprehensively uses wheel-rail force measurement technology, data fusion technology, axle counting algorithm, vehicle number recognition technology, and running status self-checking technology to achieve effective real-time detection of the loading status of railway freight cars in motion.

[0003] With the increase in the running speed of freight trains, the number of railway freight cars with running speeds higher than 60km / h in the section where overload and unbalanced load detection devices are installed has increased significantly. Since the existing overload and unbalanced load detection devices were developed under the background of detection speeds lower than 60km / h, on the one hand, the current overload and unbalanced load detection device standard TB / T3096-2004 "Railway Freight Car Overload and Unbalanced Load Detection Device" and the verification regulations JJG (Railway) 129-2004 "Railway Freight Car Overload and Unbalanced Load Detection Device" only stipulate the situation where the detection speed is lower than 60km / h, and there is no technical basis and evaluation for the detection performance higher than 60km / h; on the other hand, when the speed of the existing overload and unbalanced load detection device is higher than 60km / h, the various detection technical indicators are significantly reduced, indicating that its composition structure, data acquisition method and waveform analysis and calculation method cannot meet the detection requirements at speeds higher than 60km / h, and cannot guarantee the accuracy and reliability of the detection data, and cannot be used for the evaluation of overload, unbalanced load and unbalanced load.

[0004] In order to achieve 100% effective detection of freight trains, it is necessary to limit the running speed of the train through the overload detection device to less than 60km / h, which is not conducive to improving the throughput capacity and transportation production efficiency of freight cars. In addition, due to the limitation of equipment detection performance, the train needs to adjust the speed when passing through the section where the detection equipment is installed, which will directly increase the traction energy consumption and line loss. Therefore, it is very necessary to study the applicability of overload detection devices in speed sections above 60km / h and effectively improve the detection speed of overload detection devices to improve transportation efficiency and ensure railway transportation safety. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a high-speed railway freight car overload detection device in view of the deficiencies in the prior art, so as to solve the problem that the prior overload detection device is not suitable for the high-speed running of the train.

[0006] The utility model discloses a high-speed railway freight car overload and eccentric load detection device, which comprises a weighing table, a weighing control system cabinet and a data display platform, wherein the weighing table is fixedly installed on the ground and connected to an ordinary rail, and the weighing table is provided with continuously divided measuring areas, each of which is provided with a plurality of shear force sensors and a plurality of pressure sensors, the signal output ends of the shear force sensors and the pressure sensors are connected to the signal acquisition end of the weighing control system cabinet, and the signal output end of the weighing control system cabinet is electrically connected to the signal input end of the data display platform.

[0007] As a further improvement, the weighing table includes a plurality of special sleepers, which are placed on the ground at equal intervals. The special sleepers are fixedly connected to the rails through connecting parts. A plurality of equally spaced installation grooves are opened inside the special sleepers, and a plurality of shear force sensors and pressure sensors are fixedly installed one by one inside the plurality of installation grooves.

[0008] Furthermore, each of the measuring areas comprises four shear force sensors and four pressure sensors, the four shear force sensors are respectively installed on two sides of each measuring area, and two pressure sensors are installed with equal spacing between two adjacent shear force sensors.

[0009] Furthermore, the weighing control system cabinet includes an overload and eccentric load signal processor group, a vehicle number recognition system host and an industrial computer;

[0010] The multiple signal input ends of the over-eccentric load signal processor group are connected one-to-one with the signal output ends of all shear sensors and pressure sensors, the multiple signal output ends of the over-eccentric load signal processor group are connected one-to-one with the multiple signal input ends of the AD acquisition card, the signal output end of the AD acquisition card is connected to the signal input end of the industrial computer, the first data communication end of the industrial computer is electrically connected to the data communication end of the vehicle number recognition system host, the second data communication end of the industrial computer is electrically connected to the signal input end of the data display platform, the first signal input end of the industrial computer is connected to a keyboard, the second signal input end of the industrial computer is connected to a mouse, and the signal output end of the industrial computer is electrically connected to a display.

[0011] Furthermore, the overload signal processor group includes a first overload signal processor, a second overload signal processor, a third overload signal processor and a fourth overload signal processor.

[0012] Furthermore, the model of the industrial computer is IPC610L.

[0013] Beneficial Effects

[0014] The advantages of the utility model are:

[0015] 1. By setting up a weighing table, shear force sensor, pressure sensor, weighing control system cabinet and data display platform, it is possible to detect overload and unbalanced load on high-speed trains, improve the passing capacity and transportation production efficiency of freight cars, and reduce traction energy consumption and line loss.

[0016] 2. By improving the existing interval measurement area structure into a continuous measurement area structure and increasing it to 8 measurement areas, the transmission of wheel weight is continuous and the time for the train to pass through the measurement area is prolonged, which can greatly reduce the impact of train vibration and serpentine swing on detection accuracy during high-speed operation.

[0017] 3. By setting up multiple overload signal processor groups, each overload signal processor is powered independently. When a power failure occurs in a certain overload signal processor, it does not affect other overload signal processors, and the system can still be used normally, thereby enhancing the fault redundancy of the system.

[0018] 4. By setting up the weighing control system cabinet and data display platform, the purpose of one-click detection of overload and unbalanced load signal processor is achieved, which greatly facilitates factory testing and saves manpower and material resources for factory debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0020] Figure 2 This is a schematic diagram of the installation of the sensor of the utility model;

[0021] Figure 3 This is a distribution diagram of measuring points in the measuring area of ​​the utility model;

[0022] Figure 4 This is a schematic diagram of the cabinet structure of the weighing control system of the utility model;

[0023] Figure 5 This is a system signal flow diagram of the present utility model.

[0024] Among them: 1-ordinary rails, 2-weighing table, 3-car number junction box, 4-rail lightning protection box, 5-signal box, 6-weighing control system cabinet, 7-UPS power supply, 8-field control room, 9-data display platform, 10-shear sensor, 11-pressure sensor, 12-measurement area, 13-display, 14-industrial computer, 15-first overload signal processor, 16-second overload signal processor, 17-third overload signal processor, 18-fourth overload signal processor, 19-car number system identification host, 20-AD acquisition card, 21-overload signal processor group, 22-ordinary sleepers, 23-special sleepers. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the embodiments, but does not constitute any limitation to the utility model. Any limited modifications made by anyone within the scope of the claims of the utility model are still within the scope of the claims of the utility model.

[0026] See also Figure 1-Figure 5 The utility model discloses a high-speed railway freight car overload detection device, which includes a weighing table, a plurality of shear force sensors 10, a plurality of pressure sensors 11, a weighing control system cabinet 6 and a data display platform 9. The weighing table is fixedly installed on the ground and connected to the ordinary rail 1. The weighing table is provided with a measuring area 12 divided by a plurality of equally spaced shear force sensors 10. The signal output ends of the plurality of sensors are connected one-to-one with the signal collection ends of the weighing control system cabinet 6. The communication signal end of the weighing control system cabinet 6 is electrically connected with the data communication end of the data display platform 9.

[0027] The weighing table includes a number of special sleepers 23. The weighing table is composed of 28 special sleepers 23 connected to each other to form a stable load-bearing foundation. Several special sleepers 23 are placed on the ground at equal intervals. The rails are connected to the special sleepers 23 through connectors. The special sleepers 23 are provided with installation grooves at equal intervals. The shear sensor 10 and the pressure sensor 11 are fixedly installed inside the installation grooves. The system adopts a combined frame concrete load-bearing structure. The special sleepers 23 are connected by high-strength bolts, so that the entire measurement section becomes a rigid area with a smooth transition. In order to ensure that the weight of the train can be faithfully transmitted to the sensor when the train passes through the measurement area at high speed, the sensor layout adopts a continuous measurement area structure, with a total of 8 detection areas, so that the transmission of wheel weight is continuous and the train passes through the measurement area for a relatively long time, which can greatly reduce the impact of train jumping and shaking on the detection accuracy during high-speed operation.

[0028] like Figure 2As shown, the system uses 32 pressure sensors 11 (numbered: D1--D32) and 18 shear sensors 10 (numbered: C1--C18) to form 8 measurement areas, and the specific combination is shown in the following Table 1. The special sleepers 23 have a spacing of 600 mm, a single measurement area length of 1200 mm, and a total length of 8 measurement areas of 9600 mm. C1, C3, C5, C7, C9, C11, C13, C15, C17 are shear force sensors 10 on the far-end rail, C2, C4, C6, C8, C10, C12, C14, C16, C18 are shear force sensors 10 on the near-end rail; D1, D3, D5, D7, D9, D11, D13, D15, D17, D19, D21, D23, D25, D27, D29, D31 are pressure sensors 11 on the far-end rail, D2, D4, D6, D8, D10, D12, D14, D16, D18, D20, D22, D24, D26, D28, D30, D32 are pressure sensors 11 on the near-end rail. It can be seen from the figure that except for the sensors (C1, C2, C17, C18) at the head and tail ends of the shear force sensor 10 which are not shared by adjacent measurement areas, the shear force sensors 10 in the middle are shared by adjacent measurement areas.

[0029]

[0030] Table 1

[0031] Each measuring area includes two shear force sensors 10 and two pressure sensors 11 . The two shear force sensors 10 are respectively installed on both sides of the measuring area 12 , and two pressure sensors 11 with equal spacing are installed between two adjacent shear force sensors 10 .

[0032] The weighing control system cabinet 6 includes an overload signal processor group 21, a vehicle number recognition system host 19 and an industrial computer 14; the signal input end of the overload signal processor group 21 is electrically connected to the signal output end of the corresponding sensor, the signal output end of the overload signal processor group 21 is connected to the signal input end of the corresponding industrial computer 14 through the AD acquisition card 20, the first communication signal end of the industrial computer 14 is electrically connected to the communication signal end of the vehicle number recognition system host 19, the second communication signal end of the industrial computer 14 is electrically connected to the data communication end of the data display platform 9, the first signal input end of the industrial computer 14 is connected to the keyboard, the second signal input end of the industrial computer 14 is connected to the mouse, and the signal output end of the industrial computer 14 is electrically connected to the display 13.

[0033] The overload signal processor group 21 includes a first overload signal processor 15, a second overload signal processor 16, a third overload signal processor 17 and a fourth overload signal processor 18. The main function of the overload signal processor is to precisely amplify the weak signal of the sensor to meet the requirements of AD sampling conversion. In addition, it also has functions such as filtering out external interference signals and output zeroing. The overload signal processor is mainly composed of a power filter board, a power board and an amplifier board. Each overload signal processor contains 14 independent sensor signal processing channels and can process 14 sensor signals. The utility model is provided with 8 measuring areas, a total of 50 sensors, and requires 4 weighing signal processors. In actual application, the number of weighing signal processors can be configured accordingly according to the speed range of detection. Two overload signal processors are configured for 4 measuring areas; three overload signal processors are configured for 6 measuring areas; and four overload signal processors are configured for 8 measuring areas.

[0034] The industrial computer 14 is connected to a UPS power supply. The model of the industrial computer 14 is IPC610L, the model of the CPU processor is 3.4GHz 8-core Intel(R) Core(TM) i7-3770 CPU, the system memory is LPDDR3 8G memory, the storage is 1T mechanical hard disk, and the operating system is Window7.

[0035] The principle of overload and unbalanced load detection of railway freight cars is to measure the weight of each wheel of each car by wheel measurement. Using the wheel weight value of each car, the total weight, unbalanced load, overload and other parameters reflecting the loading status of the car can be calculated. For vehicles with poor loading status, corresponding reorganization measures can be taken to ensure transportation safety. It should be noted that the principle of overload and unbalanced load detection of railway freight cars belongs to the existing technology, so this article will not discuss it further.

[0036] The vehicle number recognition system includes a vehicle number recognition system host 19 and a vehicle number connection box 3, which can recognize and collect vehicle number information of vehicles passing through the detection area. The vehicle number recognition system host 19 and the vehicle number connection box 3 in the utility model are both prior arts, and the utility model does not improve them.

[0037] The working principle of the utility model is: first, power is supplied to the inside of the weighing control system cabinet; when the high-speed train passes through the weighing table 2, the signal output ends of the shear sensor 10 and the pressure sensor 11 installed inside the special rail sleeper 23 will send data to the signal input end of the corresponding over-eccentric load signal processor; the over-eccentric load signal processor will further process the received data; and the processed data will be input to the corresponding signal input end of the industrial computer 14 through the signal output end of the over-eccentric load signal processor.

[0038] At the same time, the signal output end of the internal sensor of the vehicle number junction box 3 on the rail will send data to the signal input end of the vehicle number recognition host 19. The vehicle number recognition host 19 further processes the received data, and the processed data is input to the communication signal end of the industrial computer 14 through the communication signal end of the vehicle number recognition host 19.

[0039] The industrial computer 14 processes the data of the overload and unbalanced load signal processor and the data of the vehicle number recognition host 19, and sends the final processed data to the data communication terminal of the data display platform 9 through the second communication signal terminal of the industrial computer 14. The data display platform 9 can display the current vehicle number and the data of the overload and unbalanced load test.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A high-speed railway freight car overload detection device, characterized in that: It comprises a weighing table (2), a weighing control system cabinet (6) and a data display platform (9); the weighing table (2) is fixedly installed on the ground and connected to a common rail (1); the weighing table (2) is provided with continuously divided measuring areas (12); each measuring area (12) is provided with a plurality of shear force sensors (10) and a plurality of pressure sensors (11); the signal output ends of the shear force sensors (10) and the pressure sensors (11) are connected to the signal collection end of the weighing control system cabinet (6); the signal output end of the weighing control system cabinet (6) is electrically connected to the signal input end of the data display platform (9); The weighing control system cabinet (6) comprises an overload and unbalanced load signal processor group (21), a vehicle number recognition system host (19) and an industrial control computer (14); The multiple signal input ends of the overload signal processor group (21) are connected one-to-one with the signal output ends of all the shear force sensors (10) and the pressure sensors (11); the multiple signal output ends of the overload signal processor group (21) are connected one-to-one with the multiple signal input ends of the AD acquisition card (20); the signal output end of the AD acquisition card (20) is connected to the signal input end of the industrial computer (14); the first data communication end of the industrial computer (14) is electrically connected to the data communication end of the vehicle number recognition system host (19); the second data communication end of the industrial computer (14) is electrically connected to the signal input end of the data display platform (9); the first signal input end of the industrial computer (14) is connected to a keyboard; the second signal input end of the industrial computer (14) is connected to a mouse; and the signal output end of the industrial computer (14) is electrically connected to a display (13).

2. A high-speed railway freight car overload detection device according to claim 1, characterized in that: The weighing table (2) comprises a plurality of special sleepers (23), which are placed on the ground at equal intervals. The special sleepers (23) are fixedly connected to the rails via connecting pieces. A plurality of installation grooves arranged at equal intervals are provided inside the special sleepers (23), and a plurality of shear force sensors (10) and pressure sensors (11) are fixedly installed in the plurality of installation grooves in a one-to-one correspondence.

3. A high-speed railway freight car overload detection device according to claim 1, characterized in that: Each of the measuring areas (12) comprises four shear force sensors (10) and four pressure sensors (11); the four shear force sensors (10) are respectively installed on two sides of each measuring area (12); and two pressure sensors (11) are installed at equal intervals between two adjacent shear force sensors (10).

4. A high-speed railway freight car overload detection device according to claim 1, characterized in that: The over-eccentric load signal processor group (21) comprises a first over-eccentric load signal processor (15), a second over-eccentric load signal processor (16), a third over-eccentric load signal processor (17) and a fourth over-eccentric load signal processor (18).

5. The high-speed railway freight car overload detection device according to claim 1, characterized in that: The model of the industrial computer (14) is IPC610L.

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