Portable track circuit inlet current testing device

Abstract

The utility model discloses a portable track circuit inlet current testing device which comprises a main supporting rod, folding rods are rotatably installed at the two ends of the main supporting rod respectively, a testing assembly is arranged on the main supporting rod, the testing assembly is electrically connected with a wiring assembly located on the main supporting rod, and the wiring assembly is electrically connected with the main supporting rod. The two folding rods are connected with rotating magnets, the wiring assembly is electrically connected with the two rotating magnets, a handle is fixed to the main supporting rod, the adsorption pressure is stable, a single person can conveniently conduct track circuit inlet current testing, carrying is convenient, and operation is easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of track circuits and relates to a portable track circuit entrance current testing device. Background Art

[0002] Entrance current testing is an important task before the line is opened and during the daily maintenance of outdoor track circuits. The magnitude of the entrance current is an important technical indicator to ensure the reliability of the track circuit. At present, there is a lack of special testing tools for entrance current testing. It is necessary to first select the corresponding specification of the sealing wire according to the track circuit system to seal the rail surface at the locomotive entrance, and then clamp the current transformer of the frequency shift meter to the sealing wire for testing.

[0003] However, the existing track circuit entrance current testing devices need two staff members to connect the sealing wires on the device to two tracks respectively for measurement. At the same time, it is easy for the staff to manually press with unstable pressure, resulting in changes in contact resistance and unstable entrance current test results, further affecting the test efficiency. Therefore, it is necessary to design a portable track circuit entrance current testing device to solve the above problems. Summary of the Utility Model

[0004] In view of the above problems, in order to overcome the defects of the prior art, the utility model provides a portable track circuit entrance current testing device. The purpose of the utility model is to have stable adsorption pressure, facilitate single-person testing of the track circuit entrance current, be easy to carry, and have simple operation.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows: The utility model includes a main support rod, both ends of the main support rod are rotatably installed with folding rods, a testing component is arranged on the main support rod, the testing component is electrically connected to a wiring component located on the main support rod, a rotating magnet is connected to each of the two folding rods, the wiring component is electrically connected to the two rotating magnets, and a handle is fixed on the main support rod.

[0006] Preferably, the test component includes a collection box fixed on the main support rod. Inside the collection box, there are a current collection interface, a current transformer, a rail surface voltage interface, a channel switching module, a programmable gain module, a 24-bit ADC module, a DSP unit module, an ARM unit module, an LCD display unit, a key, a battery, as well as a battery management unit and a power management unit. The channel switching module, the programmable gain module, the 24-bit ADC module, the DSP unit module, and the ARM unit module are electrically connected in sequence. The current transformer is electrically connected to the channel switching module through the current collection interface. The rail surface voltage interface is electrically connected to the channel switching module. Both the current transformer and the rail surface voltage interface are electrically connected to the wiring component. The channel switching module, the programmable gain module, the 24-bit ADC module, the DSP unit module, and the ARM unit module are all electrically connected to the power management unit. The battery management unit is electrically connected to the battery, and the battery is electrically connected to the power management unit. The ARM unit module is electrically connected to the LCD display unit and the key.

[0007] Preferably, the wiring component includes a three-core sealed connection wire bundle installed inside the main support rod, a selection switch, a sealed connection common wire, and two voltage measurement wires. The three-core sealed connection wire bundle and the sealed connection common wire are selected through the selection switch. The three-core sealed connection wire bundle, the sealed connection common wire, and the two voltage measurement wires all penetrate the main support rod and the corresponding folding rod. The three-core sealed connection wire bundle and one of the voltage measurement wires penetrate the left folding rod and are electrically connected to the left rotating magnet. The sealed connection common wire and the other voltage measurement wire penetrate the right folding rod and are electrically connected to the right rotating magnet. Both of the two voltage measurement wires are electrically connected to the rail surface voltage interface on the collection box. The sealed connection common wire penetrates into the induction ring of the current transformer.

[0008] Preferably, the three-core sealed connection wire bundle adopts three specifications of 0.06R, 0.15R, and 0.25R respectively.

[0009] Preferably, the main support rod is rotationally connected to the two folding rods through two damping rotating shafts.

[0010] Preferably, both of the two folding rods are fixed on the main support rod through quick-release latches.

[0011] Preferably, an insulating joint is fixed between the right folding rod and the corresponding rotating magnet.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model is convenient for folding and unfolding the device through the mutual cooperation of the handle, the folding rod and the main support rod, and is convenient to carry. Through the mutual cooperation of the test component and the rotating magnet, it is convenient for direct measurement and is convenient for single-person use. By adsorbing the rotating magnet on the track, the adsorption pressure is stable, convenient, fast and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the unfolded state of the structure of the utility model;

[0015] Figure 2 It is a top view schematic diagram of the folded state of the structure of the utility model;

[0016] Figure 3 It is a wire connection schematic diagram of the voltage measurement wire, the three-core sealed connection wire harness and the sealed connection common wire of the utility model;

[0017] Figure 4 It is a module connection diagram of the test component in the utility model.

[0018] Reference numerals: 1-main support rod, 2-folding rod, 3-rotating magnet, 4-handle, 5-acquisition box, 6-voltage measurement wire, 7-gating switch, 8-three-core sealed connection wire harness, 9-sealed connection common wire, 10-damping rotating shaft, 11-quick release buckle, 12-insulating joint, 13-rail surface voltage interface, 14-current transformer, 15-current acquisition interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Next, in combination with the attached Figures 1-4 A further detailed description will be given of the specific implementation manners of the present utility model.

[0021] In this embodiment, through Figures 1-3As shown in the figure, the utility model includes a main support rod 1. Folding rods 2 are rotatably installed at both ends of the main support rod 1. A test assembly is arranged on the main support rod 1. The test assembly is electrically connected to a wiring assembly located on the main support rod 1. Rotating magnets 3 are connected to both folding rods 2. The wiring assembly is electrically connected to the two rotating magnets 3. A handle 4 is fixed on the main support rod 1. Workers can hold the handle 4 by hand to drive the main support rod 1 to move, thereby driving the device to move to the track to be measured. First, rotate the folding rod 2 to displace the rotating magnet 3. Then, rotate the rotating magnet 3. The rotating magnet 3 obtains magnetic force and attracts the two tracks. Then, the signal is transmitted to the test assembly through the wiring assembly for current testing. The rotating magnet 3 can adopt a magnetic base with a magnetic force of 4T. The rotating magnet 3 gets magnetized and demagnetized by rotation. Usually, when the rotating magnet 3 does not rotate, there is no magnetism. After rotation, it has magnetic adsorption force, which can avoid being adsorbed to metals during normal carrying. By using the rotating magnet 3 to adsorb the track for testing, it is convenient for single-person use, with simple operation, fast and convenient.

[0022] In this embodiment, through Figures 1-4 As shown in the figure, the test assembly includes a collection box 5 fixed on the main support rod 1. Inside the collection box 5, there are a current collection interface 15, a current transformer 14, a rail surface voltage interface 13, a channel switching module, a programmable gain module, a 24-bit ADC module, a DSP unit module, an ARM unit module, an LCD display unit, a key, a battery, as well as a battery management unit and a power management unit. The current transformer 14 is electrically connected to the current collection interface 15. The channel switching module, the programmable gain module, the 24-bit ADC module, the DSP unit module, and the ARM unit module are electrically connected in sequence. The current transformer 14 is electrically connected to the channel switching module through the current collection interface 15. The rail surface voltage interface 13 is electrically connected to the channel switching module. Both the current transformer 14 and the rail surface voltage interface 13 are electrically connected to the wiring assembly. The channel switching module, the programmable gain module, the 24-bit ADC module, the DSP unit module, and the ARM unit module are all electrically connected to the power management unit. The battery management unit is electrically connected to the battery. The battery is electrically connected to the power management unit. The battery management unit can perform charging protection on the battery. The power management unit is used to supply power to other modules. The ARM unit module is electrically connected to the LCD display unit and the key;

[0023] The current transformer 14 can adopt a current transformer 14 with the model of DL-CT08CL10-2000 / 1;

[0024] The channel switching module uses a relay of model HFD4 / 3-S, which supports users to switch channels through the device according to different test functions and requirements, realize the input switching of the current acquisition interface 15 and the rail surface voltage interface 13, and then realize the measurement functions of the entrance current and the rail surface voltage;

[0025] The battery management unit uses a dedicated lithium battery management chip IP2312;

[0026] The power management unit uses a converter of model TPS62056;

[0027] The programmable gain module is composed of an integrated operational amplifier OPA335 and a digital switch 74HC4052M;

[0028] The 24-bit ADC module can use a high-bandwidth 24-bit industrial analog-to-digital converter of model ADS1271;

[0029] The DSP unit module can use a high-performance, low-power, fixed-point digital signal processor of model TMS320VC5502;

[0030] The ARM unit module can use an embedded ARM controller of model STM32F103VET6;

[0031] The LCD display unit can use an LCD monitor of model HG128643-B-LWH.

[0032] In this embodiment, through Figures 1-3As shown in the figure, the wiring assembly includes a three-core sealed connection wire bundle 8, a gating switch 7, a sealed connection common wire 9, and two voltage measurement wires 6 installed in the main support rod 1. The three-core sealed connection wire bundle 8 is electrically connected to the sealed connection common wire 9 through the gating switch 7. The three-core sealed connection wire bundle 8, the sealed connection common wire 9, and the two voltage measurement wires 6 all penetrate the main support rod 1 and the corresponding folding rod 2. The three-core sealed connection wire bundle 8 and one of the voltage measurement wires 6 both penetrate the left folding rod 2 and are electrically connected to the left rotating magnet 3. The sealed connection common wire 9 and the other voltage measurement wire 6 both penetrate the right folding rod 2 and are electrically connected to the right rotating magnet 3. The two voltage measurement wires 6 are both electrically connected to the rail surface voltage interface 13 on the acquisition box 5. The sealed connection common wire 9 penetrates into the induction ring of the current transformer 14 to achieve electromagnetic induction connection between the sealed connection common wire 9 and the current transformer 14. The rotating magnet 3 can be used as a metal conductor, and the three-core sealed connection wire bundle 8, the voltage measurement wire 6, and the sealed connection common wire 9 are fixed to the rotating magnet 3 through the nut above the rotating magnet 3. During the test, the rotating magnet 3 contacts the track rail surface, and the three-core sealed connection wire bundle 8, the voltage measurement wire 6, and the sealed connection common wire 9 achieve electrical contact with the track rail surfaces on both sides through the rotating magnet 3. The sealed connection common wire 9, the three-core sealed connection wire bundle 8, and the voltage measurement wire 6 are installed in the main support rod 1 and the folding rod 2, which protects them from being often folded together or scratched, resulting in damage. The current transformer 14 is used to sense and test the current amplitude in the three-core sealed connection wire bundle 8, and different specifications of the three-core sealed connection wire bundle 8 can be selected for testing through the gating switch 7. The gating switch 7 can adopt a three-position six-pin toggle switch with the signal SHT80.

[0033] In this embodiment, through Figures 1-3 As shown in the figure, the three-core sealed connection wire bundle 8 adopts three specifications of 0.06R, 0.15R, and 0.25R respectively. The left and right folding rods 2 and the main support rod 1 are internally provided with three-core sealed connection wire bundles 8 of three specifications, voltage measurement wires 6, and sealed connection common wires 9. The three-core sealed connection wire bundle 8, the sealed connection common wire 9, and the voltage measurement wire 6 are respectively connected to the rotating magnets 3 at both ends of the device.

[0034] In this embodiment, through Figures 2-3 As shown in the figure, the main support rod 1 is rotatably connected to the two folding rods 2 through two damping rotating shafts 10. The main support rod 1 and the two folding rods 2 form the device body; the two folding rods 2 can be unfolded or folded through the damping rotating shafts 10 to facilitate quick unfolding or folding and carrying during the test. The damping rotating shafts 10 adopt damping hinges with the model CL1815.

[0035] In this embodiment, through Figures 1-2As shown in the figure, the two folding rods 2 are both fixed to the main support rod 1 by quick-release latches 11. The quick-release latches 11 adopt cabinet door catches. With the quick-release latches 11 and damping rotating shafts 10, it can be quickly unfolded during use and folded conveniently during carrying, which not only meets the requirement of convenient connection during measurement but also satisfies the characteristic of convenient carrying.

[0036] In this embodiment, through Figures 1-3 As shown in the figure, an insulating joint 12 is fixed between each of the two folding rods 2 and the corresponding rotating magnet 3, which can prevent current from passing through the rotating magnet 3, the folding rod 2, and the main support rod 1 to form a current loop, enabling the current to form a loop through the rotating magnet 3, the three-core sealed connection wire bundle 8, the sealed connection common wire 9, and the current transformer 14. Similarly, the current voltage is also measured through the rotating magnet 3, the voltage measurement wire 6, and the test component.

[0037] When the utility model is in use, first, the staff carries the device to the track location to be measured through the handle 4, then opens the quick-release latch 11, then rotates the two folding rods 2 to unfold them. Subsequently, the rotating magnets 3 are rotated so that the two rotating magnets 3 are placed on the two tracks. Then, one core of the three-core sealed connection wire bundle 8 selected by the gating switch 7 is electrically connected to the sealed connection common wire 9. Then, the current amplitude in the sealed connection common wire 9 is electromagnetically induced by the current transformer 14 and input to the current acquisition interface 15. Different specifications of the three-core sealed connection wire bundle 8 can be selected through the gating switch 7 for testing. The track voltage is electrically connected through the voltage measurement wire 6, and the voltage signal of the track is input to the rail surface voltage interface 13 to collect the voltage. The channel switching module can select the current acquisition interface 15 or the rail surface voltage interface 13 to input to the programmable gain module. Subsequently, the corresponding inlet current measurement or track voltage measurement can be completed successively through the 24-bit ADC module, the DSP unit module, and the ARM unit module. The data is displayed through the LCD display unit, and the functions can be selected through the buttons. As a dedicated device for inlet current testing, the main function of this device is to achieve rapid and accurate measurement of the inlet current, and the rail surface voltage measurement is an additional function.

[0038] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable track circuit inlet current test device, characterized in that: It includes a main support rod, both ends of which are rotatably installed with folding rods, a test component is arranged on the main support rod, the test component is electrically connected to a wiring component located on the main support rod, two folding rods are connected with rotating magnets, the wiring component is electrically connected to two rotating magnets, and a handle is fixed on the main support rod.

2. A portable track circuit entrance current testing device according to claim 1, characterized in that: The test component includes a collection box fixed on the main support rod, and the collection box is provided with a current collection interface, a current transformer, a rail surface voltage interface, a channel switching module, a program-controlled amplifier module, a 24-bit ADC module, a DSP unit module, an ARM unit module, an LCD display unit, a button, a battery, a battery management unit and a power management unit. The channel switching module, the program-controlled amplifier module, the 24-bit ADC module, the DSP unit module and the ARM unit module are electrically connected in sequence, the current transformer is electrically connected to the channel switching module through the current collection interface, the rail surface voltage interface is electrically connected to the channel switching module, the current transformer and the rail surface voltage interface are both electrically connected to the wiring assembly, the channel switching module, the program-controlled amplifier module, the 24-bit ADC module, the DSP unit module, and the ARM unit module are all electrically connected to the power management unit, the battery management unit is electrically connected to the battery, the battery is electrically connected to the power management unit, and the ARM unit module is electrically connected to the LCD display unit and the button.

3. A portable track circuit entrance current testing device according to claim 2, characterized in that: The wiring assembly includes a three-core sealed wiring harness, a selection switch, a sealed common line and two voltage measurement lines installed in the main support pole. The three-core sealed wiring harness and the sealed common line are selected by the selection switch. The three-core sealed wiring harness, the sealed common line and the two voltage measurement lines all pass through the main support pole and the corresponding folding pole. The three-core sealed wiring harness and one of the voltage measurement lines pass through the left folding pole and are electrically connected to the left rotating magnet. The sealed common line and the other voltage measurement line pass through the right folding pole and are electrically connected to the right rotating magnet. The two voltage measurement lines are electrically connected to the rail surface voltage interface on the collection box, and the sealed common line passes into the induction loop of the current transformer.

4. A portable track circuit entrance current testing device according to claim 3, characterized in that: The three-core sealed wiring harness adopts three specifications of 0.06R, 0.15R and 0.25R respectively.

5. A portable track circuit entrance current testing device according to claim 1, characterized in that: The main support rod is rotationally connected to the two folding rods via two damping shafts.

6. A portable track circuit entrance current testing device according to claim 1, characterized in that: The two folding rods are both fixed to the main support rod by quick locks.

7. A portable track circuit entrance current testing device according to claim 1, characterized in that: An insulating joint is fixed between the folding rod on the right and the corresponding rotating magnet.

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