Trolley track magnetic steel device for train bottom detection of motor train unit

Abstract

The utility model provides a trolley track magnetic steel device for detecting the bottom of a motor train unit, the magnetic steel device comprises a plurality of magnetic steels distributed along the running direction of the track, when the device is installed, one magnetic steel is embedded on each section of steel rail, every two magnetic steels are fixed at intervals, and meanwhile, the magnetic steels are insulated from the outside contact surface. The magnetism of the magnetic steel is prevented from being weakened along with time, the installed magnetic steel is of a detachable structure and integrally penetrates through the whole rail, maintenance or replacement operation is convenient if maintenance or replacement is needed, and the maintenance cost is extremely low.

Description

Technical Field

[0001] The present application belongs to the field of rail transit technology, and specifically relates to a trolley track magnetic steel device for detecting the underbody of an EMU. Background Art

[0002] In the prior art, the detection of the bottom of the EMU is mostly completed by a detection trolley. When the detection trolley is in operation, a rack positioning measurement method is used to obtain the distance traveled by the trolley. However, the rack positioning measurement method has high installation accuracy requirements, and the installation is difficult, time-consuming and labor-intensive. The rack used in the rack positioning is prone to rust. In order to avoid rust affecting the measurement accuracy, it needs to be oiled and maintained, and the subsequent maintenance cost is high. Therefore, a measuring device that is easy to load and unload and has low subsequent maintenance costs is urgently needed. Summary of the invention

[0003] In order to solve the problem that the rack positioning measurement method in the prior art is difficult to install and has high maintenance cost, a trolley track magnetic steel device for EMU undercarriage detection is provided. The trolley track magnetic steel device for EMU undercarriage detection is easy to load and unload and has low subsequent maintenance cost.

[0004] A trolley track magnet device for detecting the underbody of an EMU, the magnet device comprising a plurality of magnets distributed along the direction of track travel; each magnet comprising a magnet 1, a cylindrical shell 2 and a screw 3; the cylindrical shell 2 is embedded in the inside of the rail on one side of the rail, the magnet 1 is fixed inside the cylindrical shell 2, the cylindrical shell 2 is used to ensure insulation between the contact surface of the magnet 1 and the rail, and to prevent the magnetism of the magnet from being lost; the screw 3 is embedded in the rail on the other side of the rail, and passes through the rail to be detachably connected to the cylindrical shell 2.

[0005] Beneficial Effects

[0006] The present application provides a trolley track magnet device for EMU undercarriage detection. The magnet device includes a plurality of magnets distributed along the direction of track travel. The magnets are embedded in the running track. When the device is installed, a magnet is installed on each section of rail, and the positions of every two magnets are fixed. At the same time, the contact surface between the magnet and the outside world is insulated to prevent the magnetism of the magnet from weakening over time. The installed magnet adopts a detachable structure that runs through the entire rail as a whole. If maintenance or replacement is required, the operation is convenient and the maintenance cost is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is the overall schematic diagram of installing magnetic steel in the track;

[0008] Figure 2 This is a side view of the magnetic steel installed in the track;

[0009] Figure 3 It is a schematic diagram of the detailed structure of the magnetic steel;

[0010] Figure 4 This is a top view of the detailed structure of the magnetic steel;

[0011] Figure 5 This is a cross-sectional view of the magnetic steel installation structure. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] Attachment Figures 1 to 5 The present embodiment is described as a trolley track magnet device for EMU undercarriage detection, the magnet device comprising a plurality of magnets distributed along the direction of track travel; each magnet comprising a magnet 1, a cylindrical shell 2 and a screw 3; the cylindrical shell 2 is embedded in the rail on one side of the rail, the magnet 1 is fixed in the cylindrical shell 2, the cylindrical shell 2 is used to ensure insulation between the contact surface of the magnet 1 and the rail, and to prevent the magnetism of the magnet from being lost; the screw 3 is embedded in the rail on the other side of the rail, and passes through the rail to be detachably connected to the cylindrical shell 2.

[0014] Specifically, the magnetic steel device includes a plurality of magnetic steels distributed along the direction of track travel, each magnetic steel includes a magnet 1, a cylindrical shell 2 and a screw 3; the cylindrical shell 2 is made of metal aluminum, which can prevent the magnetism of the magnet 1 from being lost, and physically separate the magnet 1 from the running rail to prevent the rail from being magnetized; the magnet 1 is fixed inside the cylindrical shell 2 to prevent the rail from vibrating when the trolley is running and causing the magnet 1 to slip; the screw 3 is embedded in the rail on the other side of the rail, and passes through the rail to be detachably connected to the cylindrical shell 2, the screw 3 is used to fix the magnet to prevent the magnet from falling, the screw 3 must have a certain length, if the magnet 1 needs to be maintained or replaced, it is only necessary to remove the screw 2, take out the magnet 1 in the cylindrical shell 2 from the rail for replacement; during installation, the magnet 1 is embedded in the cylindrical shell 2, and then the cylindrical shell 2 embedded with the magnet 1 is embedded into the rail from one side of the rail, and the screw 3 passes through the rail from the other side of the rail to be connected to the cylindrical shell 2; the device is simple to load and unload, and is convenient for later maintenance.

[0015] The magnet 1 is fixed to the cylindrical housing 2 by riveting, and the cylindrical housing 2 is threadedly connected to the screw 3 .

[0016] Specifically, Figures 3 to 5As shown, the magnet 1 and the cylindrical shell 2 are riveted together to prevent structural aging and prevent the magnet 1 from falling out of the cylindrical shell 2. The cylindrical shell 2 and the screw 3 are threadedly connected to fix the magnet inside the rail to prevent the magnet from falling. At the same time, the spiral connection facilitates the loading and unloading of the magnet and reduces the subsequent maintenance cost.

[0017] The screw 3 includes a screw rod and a head; one end of the screw rod passes through the rail and is threadedly connected to the cylindrical housing 2; the other end of the screw rod is fixed with a head, which is located in a circular groove 4 on the other side of the rail and is used to drive the screw rod to rotate.

[0018] Specifically, Figure 5 As shown, the head of the screw 3 is located in the circular groove 4, which can fix the screw tightly in the rail, thereby fixing the magnet to prevent it from falling; if the magnet needs to be removed, the cylindrical shell 2 can be taken out by simply unscrewing the screw 3 from the circular groove 4 of the rail, which is convenient for loading and unloading and simple to operate.

[0019] The diameter of the cylindrical shell 2 is larger than the diameter of the screw, and the diameter of the circular groove 4 is larger than the diameter of the head; the distance between the cylindrical shell 2 and the circular groove 4 is smaller than the length of the screw.

[0020] Specifically, Figure 5 As shown, the diameter of the cylindrical shell 2 is larger than the diameter of the screw, and the diameter of the circular groove 4 is larger than the diameter of the screw; the distance between the cylindrical shell 2 and the circular groove 4 is smaller than the length of the screw; the screw is ensured to fix the magnet in the rail to prevent it from falling.

[0021] The magnet 1 is a round strong magnet.

[0022] Specifically, the circular strong magnet does not need to consider the polarity of the magnet when it is installed, and both the front and back sides can be detected by the sensor.

[0023] The distance between every two adjacent magnets is the same.

[0024] Specifically, on the track where the trolley runs, a magnet is embedded at a fixed interval, the distance between every two adjacent magnets is the same, and the overall structure of the magnet runs horizontally through the entire rail.

[0025] A trolley track magnetic steel device for detecting the underbody of an EMU also includes a Hall sensor, which is installed at the lower part of the trolley side and is used to detect magnetic steel signals.

[0026] Specifically, a magnet is embedded at a fixed distance on the running track of the trolley. The magnet contains a strong magnet, and the contact surface between the strong magnet and the track is insulated. The Hall sensor is installed on the lower side of the trolley to ensure that the Hall sensor can detect the signal when the trolley passes through the magnet. The trolley starts from the origin, and each time it passes through the magnet, the Hall sensor receives a signal. The distance the trolley has traveled is calculated based on the cumulative number of signals received and the distance between the magnets.

[0027] The Hall sensor is a bipolar Hall sensor.

[0028] Specifically, the bipolar Hall sensor is used with a strong circular magnet. The polarity of the magnet does not need to be considered, and both the positive and negative sides can be detected by the bipolar Hall sensor.

[0029] The magnet 1 and the cylindrical housing 2 are detachably connected.

[0030] Specifically, the magnet 1 and the cylindrical housing 2 are detachably connected, so that the magnet 1 is easy to replace.

[0031] The cylindrical shell 2 is made of metal aluminum material.

[0032] Specifically, the cylindrical shell 2 is made of a metal aluminum material, which physically separates the magnet 1 from the running rails to prevent the rails from being magnetized.

[0033] What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A trolley track magnetic steel device for EMU vehicle bottom detection, characterized in that: The magnetic steel device comprises a plurality of magnetic steels distributed along the running direction of the track; each magnetic steel comprises a magnet (1), a cylindrical shell (2) and a screw (3); the cylindrical shell (2) is embedded in the interior of the rail on one side of the rail, the magnet (1) is fixed in the interior of the cylindrical shell (2), and the cylindrical shell (2) is used to ensure the insulation of the contact surface between the magnet (1) and the rail and prevent the magnetic properties of the magnetic steel from being lost; the screw (3) is embedded in the rail on the other side of the rail and passes through the rail to be detachably connected to the cylindrical shell (2).

2. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1 is characterized in that: The magnet (1) is fixed to the cylindrical shell (2) by riveting, and the cylindrical shell (2) is threadedly connected to the screw (3).

3. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1 is characterized in that: The screw (3) comprises a screw rod and a head; one end of the screw rod passes through the rail and is threadedly connected to the cylindrical housing (2); the other end of the screw rod is fixed with a head, which is located in a circular groove (4) on the other side of the rail and is used to drive the screw rod to rotate.

4. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 3 is characterized in that: The diameter of the cylindrical shell (2) is greater than the diameter of the screw, and the diameter of the circular groove (4) is greater than the diameter of the head; the distance between the cylindrical shell (2) and the circular groove (4) is less than the length of the screw.

5. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1 is characterized in that: The magnet (1) is a round strong magnet.

6. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1 is characterized in that: The distance between every two adjacent magnets is the same.

7. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1 is characterized in that: It also includes a Hall sensor, which is installed at the lower part of the trolley side and is used to detect the magnetic steel signal.

8. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 7 is characterized in that: The Hall sensor is a bipolar Hall sensor.

9. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 1, characterized in that: The magnet (1) and the cylindrical housing (2) are detachably connected.

10. The trolley track magnetic steel device for EMU vehicle bottom detection according to claim 6, characterized in that: The cylindrical shell (2) is a cylindrical shell made of metal aluminum material.

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