CN114383556B - A detection device and method for rigid catenary - Google Patents

Abstract

The invention relates to a detection device and a detection method for a rigid contact net, which belong to the technical field of rail transit, and comprise channel steel, wherein the lower surface of the channel steel is respectively connected with two anchor bolts in a threaded manner through two mounting screws, and when the device is used, the platform plate and the channel steel are positioned at constant distance positions, and when the channel steel is subjected to the vibration action of a busbar conductive assembly, the mounting bolt positions of the channel steel are loosened, and the distance sensors are shielded when the height of the channel steel is changed.

Description

A detection device and method for rigid catenary

technical field

The invention relates to the technical field of rail transit, in particular to a detection device and method for a rigid catenary.

Background technique

The overhaul of the catenary found that because the rigid catenary has many connection points in contact with the suspension parts, the impact force of the pantograph caused the overall vibration of the Huliu school conductive components and the channel steel, and it was basically connected by bolts. The phenomenon of loosening occurs continuously under the impact and vibration, which makes the contact part heat up and accelerates the oxidation process of the metal conductor, thereby greatly increasing the contact resistance and making the heating more serious. If things go on like this, the temperature will increase sharply, eventually burning red and melting, thereby damaging the equipment and causing accidents. For this purpose, the publication number of a detection device for the connection state of a rigid catenary bolt connection is retrieved: CN 108106828 A, and it is proposed "By measuring the vertical displacement of the suspension channel steel of the rigid catenary, evaluate the loosening of the connecting parts in real time, and use the camera unit to send photos of the abnormal position to the server of the dispatching center, which is convenient for maintenance personnel to view and discuss, and improves maintenance efficiency. Efficiency and precision reduce the workload of maintenance. Using the method of the present invention, a preliminary judgment can be made on the loose state of the connecting parts, which improves the intelligent level of maintenance and provides a reliable guarantee for the safe operation of urban rail transit. , the entire detection device and method, simple in structure, easy to operate, and easy to promote and apply.” However, this method can only measure the displacement of the channel steel alone, and cannot effectively judge whether it is the displacement of the loose connection of the channel steel position or the overall displacement. It makes it difficult to effectively monitor and acquire accurate auxiliary information.

Contents of the invention

(1) Technical problems to be solved

In order to solve the above-mentioned problems in the prior art, the present invention provides a detection device and method for rigid catenary, which solves the problem that the existing detection method for rigid catenary cannot effectively judge whether it is the displacement of the loose connection of the channel steel position or the overall The displacement makes it difficult to effectively monitor and obtain accurate auxiliary information.

(2) Technical solution

In order to achieve the above object, the main technical solutions adopted by the present invention include: a detection device and method for rigid catenary, including channel steel, the lower surface of the channel steel is screwed with two anchors respectively through two mounting screws Bolt, the lower surface of the channel steel is installed with a busbar conductive component through an insulating support component, the surfaces of the two anchor bolts are respectively installed with the same platform through two adjustment screws, and the upper surface of the platform is provided with two distance sensor.

As a further solution of the present invention: a sliding hole is opened on the platen, and clips are respectively fixedly connected to both sides of the sliding block that is slidably connected to the inner wall of the sliding hole, and the inner wall of the clip overlaps the surface of the adjusting screw.

As a further solution of the present invention: a plurality of distance sensors are connected to the track dispatching center through the wiring joints arranged on the lower surface of the platform.

As a further solution of the present invention: the position of the platform on the surface of the anchor bolt depends on the distance from the channel steel, and the platform and the channel steel are installed at a fixed distance.

As a further solution of the present invention: the distance sensor is set at an angle of 45° with the upper surface of the table, and the anchor bolt is fixedly connected to a reserved hole in the wall at the top of the tunnel.

As a further solution of the present invention: a detection method of a detection device of a rigid catenary, comprising the following methods:

S1. According to the position of the bottom end of the anchor bolt, install the table plate by adjusting the screw.

S2. Measure the distance between the platen and the channel steel, and adjust the height of the platen through the adjusting screw, and keep the platen and the channel steel at a constant distance to limit the adjustment bolt through the clip.

S3. After the installation is completed, the distance sensor is sequentially connected to the track dispatching center through the wiring head, and the distance sensor is started to obtain the initial measurement distance data.

S4. During the long-term operation, if the overall height of the anchor bolt changes, the position of the distance sensor is shifted from L1 to L2.

S5. It can be seen that the fixed elevation angle θ of the distance sensor is 45°, and the difference between the measurement distance of the L2 position and the measurement distance of the L1 position is β, so one side β of the elevation angle θ can be obtained to obtain the settlement distance α.

S6. While monitoring the overall installation position in real time, the platen and the channel steel are at a constant distance. When the channel steel is subjected to the vibration of the conductive components of the busbar, the position of the mounting bolts becomes loose, and the height changes. The distance sensor realizes occlusion.

S7. When the distance sensor is blocked and its detection distance changes greatly, the track dispatching center judges the displacement distance of the overall anchor bolt connection and the displacement distance of the channel steel according to the above method, and dispatches personnel to inspect and maintain the node.

(3) Beneficial effects

The beneficial effects of the present invention are:

1. The detection device and method for the rigid catenary, by setting the distance sensor, platen, channel steel and anchor bolts, when in use, first obtain and record the initial distance data through the distance sensor, and then in the operation process, if The overall height of the anchor bolt changes, and the position of the distance sensor is shifted from L1 to L2. It can be seen that the fixed elevation angle θ of the distance sensor is 45°, and the difference between the measured distance of the L2 position and the measured distance of the L1 position is β. One side β of the elevation angle θ can be used to obtain the settlement distance α; while the overall installation position is monitored in real time, the platform and the channel steel are at a constant distance. When the channel steel is subjected to the vibration of the busbar conductive components, The position of the mounting bolts is loose, and the distance sensor is blocked when the height changes. This method can realize the detection of the overall connection state and at the same time can judge the looseness of the bolt connection at the position of the channel steel and the looseness of the connection between the anchor bolt and the tunnel to achieve accurate distinction. , according to the data measurement of different nodes, when there is an out-of-range distance data, the track dispatching center will issue an alarm and perform maintenance at the first time. This method can achieve more accurate detection and can effectively obtain accurate fault information. .

2. The detection device and method for the rigid catenary, by setting the adjustment screw, the platen, the slide hole, the clip, the limit block and the anchor bolt, when installing, the platen passes through the two adjustment screws on the upper and lower sides. Under the interaction, it is fixed to the appropriate height on the surface of the anchor bolt. After the fixation is completed, the upper and lower adjustment screws are limited by the movable clamp, and the position is limited by the limit block, indicating that the adjustment screw cannot appear. The loose displacement state ensures that there is no displacement caused by vibration during the detection process, making the monitoring process more stable and reliable, and the overall installation and layout method is simple and reliable.

Description of drawings

Fig. 1 is the structural representation of the present invention front view;

Fig. 2 is a schematic diagram of the use state of the anchor bolt and the platen in the track of the present invention;

Fig. 3 is a schematic diagram of a three-dimensional cross-sectional structure of the platen of the present invention;

Fig. 4 is the schematic cross-sectional structure diagram of the left view of the platen of the present invention;

Fig. 5 is a schematic diagram of the monitoring state principle of the present invention;

[Description of Reference Signs]

1: channel steel;

2: anchor bolt;

3: Insulation support components;

4: Busbar conductive components;

5: Install bolts;

6: Platen;

7: Adjusting screw;

8: distance sensor;

9: sliding hole;

10: card;

11: limit block;

12 terminal blocks.

Detailed ways

In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

As shown in Figures 1-5, the present invention provides a technical solution: a detection device and method for rigid catenary, including a channel steel 1, the lower surface of the channel steel 1 is threadedly connected with two mounting screws respectively. An anchor bolt 2, the lower surface of the channel steel 1 is installed with a busbar conductive assembly 4 through an insulating support assembly 3, the surfaces of the two anchor bolts 2 are respectively installed with the same platform 6 through two adjustment screws 7, and the platform 6 Two distance sensors 8 are arranged on the upper surface.

Specifically, as shown in Figure 1, the inner wall of the sliding hole 9 is provided with a clip 10, and several distance sensors 8 are connected to the track dispatching center through the wiring head 12 provided on the lower surface, and the platen 6 is located on the surface of the anchor bolt 2. Depending on the distance from the channel 1, it is installed at a constant distance from the channel 1.

By arranging the clip 10, the clip 10 can keep the adjustment screw 7 in a good position, so that it cannot be moved while maintaining the state, and is always in a locked state to keep the platen 6 from being moved by vibration. 12. The wiring head 12 can maintain multiple distance sensors 8. It can maintain real-time communication with the track dispatching center, so that it can obtain information and make corresponding processing at the first time when abnormal data occurs, so that its overall response is faster. By using the platform The plate 6 and the channel steel 1 are installed at a constant position, so that it can be in a small fault-tolerant space for the channel steel 1, and the spacing can be adjusted according to the needs, so that the fault-tolerant space of the channel steel 1 can be adjusted according to the actual situation.

Specifically, as shown in Figure 4, the upper surface of the platen 6 is provided with a slide hole 9, and the two sides of the sliding block that are slidably connected to the inner wall of the slide hole 9 are respectively fixedly connected with clips 10. The surface is overlapped, the distance sensor 8 and the upper surface of the table 6 are set at an angle of 45°, and the anchor bolt 2 is fixedly connected to the reserved hole on the wall at the top of the tunnel.

By setting the sliding hole 9, the sliding hole 9 can maintain the stable movement of the two clips 10 during use, so that the two clips 10 can be kept connected under the action of the slider. By setting the limiter, the limiter It can keep filling the inside of the sliding hole 9, so that the clamp 10 cannot move due to the action of the limiter, and then play a limit for the clamp 10, and keep the adjusting screw 7 from loosening. By setting the distance sensor 8, The distance sensor 8 is at a constant angle to record the initial measurement data, and use this to measure the subsequent real-time data, so that it can easily obtain displacement data. At the same time, the inclination method of the distance sensor 8 adopts monitoring along the direction of the tunnel to avoid some The distance deviation caused by the arched tunnel is large, so that the values of multiple sensors can be within a certain range.

Example 1:

S1. Install the table plate 6 by adjusting the screw 7 according to the position of the bottom end of the anchor bolt 2 .

S2. Measure the distance between the platen 6 and the channel steel 1, and adjust the height of the platen 6 through the adjusting screw 7, and keep the platen 6 and the channel steel 1 at a constant distance to limit the adjustment bolt through the clip 10.

S3. After the installation is completed, the distance sensor 8 is sequentially connected to the track dispatching center through the terminal 12, and the distance sensor 8 is started to obtain initial measurement distance data.

S4. During the long-term operation, if the overall height of the anchor bolt 2 changes, the position of the distance sensor 8 is shifted from L1 to L2.

S5. It can be seen that the fixed elevation angle θ of the distance sensor 8 is 45°, and the difference between the measurement distance of the L2 position and the measurement distance of the L1 position is β, thus one side β of the elevation angle θ can be obtained to obtain the settlement distance α.

S6. While monitoring the overall installation position in real time, the platen 6 and the channel steel 1 are at a constant distance. When the channel steel 1 is subjected to the vibration of the conductive component 4 of the busbar, the position of the mounting bolt 5 is loosened. When its height changes, the distance sensor 8 is blocked.

S7. When the distance sensor 8 is blocked and its detection distance changes greatly, the track dispatching center judges the displacement distance of the overall anchor bolt 2 connection and the displacement distance of the channel steel 1 according to the above method, and dispatches personnel to inspect and maintain the node.

Example 2:

S1. Install the table plate 6 by adjusting the screw 7 according to the position of the bottom end of the anchor bolt 2 .

S2. Measure the distance between the platen 6 and the channel steel 1, and adjust the height of the platen 6 through the adjusting screw 7, and keep the platen 6 and the channel steel 1 at a constant distance to limit the adjustment bolt through the clip 10.

S3. After the installation is completed, the distance sensor 8 is sequentially connected to the track dispatching center through the terminal 12, and the distance sensor 8 is started to obtain initial measurement distance data.

S4. During the long-term operation, if the overall height of the anchor bolt 2 changes, the position of the distance sensor 8 is shifted from L1 to L2.

S5. It can be seen that the fixed elevation angle θ of the distance sensor 8 is 90°, and the distance sensor 8 is kept below the channel steel 1 .

S6. While monitoring the overall installation position in real time, the platen 6 and the channel steel 1 are at a constant distance. When the channel steel 1 is subjected to the vibration of the conductive component 4 of the busbar, the position of the mounting bolt 5 is loosened. The distance sensor 8 realizes data change monitoring when its height changes.

S7. When the detection distance of the distance sensor 8 changes, the track dispatching center judges the displacement distance of the channel steel 1 and dispatches personnel to inspect and maintain the node.

Example 3:

S1. Install the table plate 6 by adjusting the screw 7 according to the position of the bottom end of the anchor bolt 2 .

S2. Measure the distance between the platen 6 and the channel steel 1, and adjust the height of the platen 6 through the adjusting screw 7, and keep the platen 6 and the channel steel 1 at a constant distance to limit the adjustment bolt through the clip 10.

S3. After the installation is completed, the distance sensor 8 is sequentially connected to the track dispatching center through the terminal 12, and the distance sensor 8 is started to obtain initial measurement distance data.

S4. During the long-term operation, if the overall height of the anchor bolt 2 changes, the position of the distance sensor 8 is shifted from L1 to L2.

S5. It can be seen that the fixed elevation angle θ of the distance sensor 8 is 90°, and the distance sensor 8 is kept staggered below the channel steel 1, so that the initial measurement distance data detection position of the distance sensor 8 is the top of the tunnel.

S6. While monitoring the overall installation position in real time, the platen 6 and the channel steel 1 are at a constant distance. When the channel steel 1 is subjected to the vibration of the conductive component 4 of the busbar, the position of the mounting bolt 5 is loosened. The distance sensor 8 realizes data change monitoring when its height changes.

S7. When the detection distance of the distance sensor 8 changes, the track dispatching center judges the displacement distance of the channel steel 1, and dispatches personnel to inspect and maintain the node

Through the above method, Embodiment 1 can monitor the overall anchoring state of different fixed nodes of the rigid catenary, as well as the fastening state of specific bolts, can quickly locate the node position, carry out special and efficient rescue maintenance, greatly reduce the time, and is suitable for troubleshooting In the field of rail transit where the periodic detection time is tight, the overall stability of the rigid catenary can be guaranteed, and at the same time, the safety of the entire railway network system can be further improved. Embodiment 2 and Embodiment 3 are a single vertical distance detection, and the detection results are relatively Single, embodiment 1 as the best embodiment belongs to the preferred deployment mode.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (1)

1. A detection method for a detection device of a rigid catenary, characterized in that the detection device comprises a channel steel (1), and the lower surface of the channel steel (1) is threadedly connected with two mounting screws respectively. Two anchor bolts (2), the lower surface of the channel steel (1) is installed with a busbar conductive assembly (4) through the insulating support assembly (3), and the surfaces of the two anchor bolts (2) are respectively passed through two adjustment screws (7) The same platen (6) is installed, and two distance sensors (8) are arranged on the upper surface of the platen (6); a sliding hole (9) is opened on the platen (6), so The two sides of the sliding block slidingly connected to the inner wall of the sliding hole (9) are respectively fixedly connected with clips (10), and the inner wall of the clip (10) overlaps with the surface of the adjusting screw (7); several distance sensors (8 ) is connected to the track dispatching center through the terminal (12) provided on the lower surface of the platform (6); the position of the platform (6) on the surface of the anchor bolt (2) depends on the distance from the channel steel (1), The platen (6) and the channel steel (1) are installed at a fixed distance; the distance sensor (8) is set at an angle of 45° to the upper surface of the platen (6), and the anchor bolt (2) is fixedly connected reserved holes in the roof wall of the tunnel; The methods include: S1. According to the position of the bottom end of the anchor bolt (2), install the platen (6) through the adjustment screw (7); S2. Measure the distance between the platen (6) and the channel steel (1), and adjust the height of the platen (6) through the adjustment screw (7), keep the platen (6) and the channel steel (1) at a constant distance to pass The clip (10) will limit the adjustment bolt; S3. After the installation is completed, the distance sensor (8) is sequentially connected to the track dispatching center through the terminal (12), and the distance sensor (8) is started to obtain the initial measurement distance data; S4. During long-term operation, if the overall height of the anchor bolt (2) changes, the position of the distance sensor (8) will be displaced from L1 to L2; S5. It can be seen that the fixed elevation angle θ of the distance sensor (8) is 45°, and the difference between the measurement distance of the L2 position and the measurement distance of the L1 position is β, so one side β of the elevation angle θ can be obtained to obtain the settlement distance α ; S6. While monitoring the overall installation position in real time, the platform (6) and the channel steel (1) are at a constant distance. When the channel steel (1) is subjected to the vibration of the busbar conductive component (4), the The position of the mounting bolt (5) is loose, and the distance sensor (8) is blocked when its height changes; S7. When the distance sensor (8) is blocked and its detection distance changes greatly, the track dispatching center judges the displacement distance of the overall anchor bolt (2) connection and the displacement distance of the channel steel (1) according to the above method, and dispatches personnel to Just check and maintain the node.