Dynamic pressure detection device for overhead line system

Abstract

The utility model relates to the technical field of catenary detection, and discloses a catenary dynamic pressure detection device, which comprises a pantograph slide plate and two hinge plates, two ends of the bottom of the pantograph slide plate are fixedly provided with fixing plates, and through the linkage operation of a trigger assembly and an alarm assembly, the pressure of the pantograph slide plate is detected. When the pressure between the contact network and the pantograph slide plate is too large, the pantograph slide plate is pressed to move downwards, the slide rod is driven to slide downwards along the driving column, the T-shaped rod on the slide rod moves downwards in the inclined guide rail and applies radial thrust to the inclined guide rail, the driving column is forced to rotate by 90 degrees anticlockwise, the driving column drives the trigger plate to rotate through the I-shaped annular plate and the rotating rod, and the pantograph slide plate is driven to move downwards. When the pressure is too large, the arc-shaped protruding block on the trigger plate makes contact with and presses the alarm trigger button, an alarm circuit is triggered, an alarm indicator lamp in a compartment is turned on, timely early warning when the pressure is too large is achieved, and the phenomenon that a pantograph sliding plate and a contact line are excessively abraded due to continuous overpressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of overhead contact line detection technology, and in particular to an overhead contact line dynamic pressure detection device. Background Technology

[0002] The overhead contact system, a key facility in electrified railways and urban rail transit systems, transmits electrical energy to mobile equipment such as electric locomotives, EMUs, or trams. It is erected in a zigzag pattern above the railway or track. It mainly consists of contact suspension, support devices, positioning devices, supports, and foundations. The contact suspension includes the contact wire, droppers, catenary wire, connecting parts, and insulators, responsible for transmitting electrical energy to the electric locomotive. The support devices support the contact suspension and transmit the load. The positioning devices fix the position of the contact wire, ensuring stable contact between the pantograph and the contact wire. The supports and foundations bear the entire load of the contact suspension and related devices.

[0003] During train operation, maintaining appropriate contact pressure between the pantograph and the overhead contact line is crucial for ensuring stable power transmission and reducing equipment wear. Excessive contact pressure prevents timely detection and effective intervention by staff, significantly accelerating mechanical wear between the pantograph contact plate and the contact wire, drastically shortening their lifespan, and increasing maintenance costs and replacement frequency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dynamic pressure detection device for overhead contact lines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a contact network dynamic pressure detection device, comprising a pantograph sliding plate and two hinge plates, wherein fixed plates are fixedly installed at both ends of the bottom of the pantograph sliding plate, and the bottom ends of the pantograph sliding plate are slidably disposed on the upper ends of the two hinge plates through the fixed plates, and a support frame is fixedly installed at the upper middle part of the two hinge plates, and a triggering component is provided at the upper end of the support frame;

[0006] The triggering component includes a slide rod and a drive column. Two T-shaped rods are installed at the bottom of the slide rod. Two inclined guide rails are opened on the surface of the drive column. The T-shaped rods are snapped into the inside of the inclined guide rails. An I-shaped ring plate is fixedly installed at the bottom of the drive column. An alarm component is provided at the bottom of the support frame.

[0007] The alarm assembly includes a trigger plate, the upper end of which corresponds to the bottom axis of the I-shaped ring plate, and an arc-shaped protrusion is fixedly installed on the upper surface of its other end.

[0008] Preferably, the top of the slide rod is fixedly connected to the middle of the lower surface of the pantograph slide plate, and two limiting rings are fixedly installed on the slide rod, with the two T-shaped rods fixedly installed on the side surface of the limiting rings.

[0009] Preferably, the bottom of the slide rod is slidably connected to the inner wall of the drive column via a limiting ring, and a rotating rod is fixedly installed on the bottom of the I-shaped ring plate through the support frame. The bottom of the rotating rod is fixedly installed on the upper end of the trigger plate on the side away from the arc-shaped protrusion.

[0010] Preferably, an alarm trigger button is fixedly installed at the bottom front end of the support frame, and a connecting wire is fixedly installed at the upper end of the alarm trigger button. The other end of the connecting wire is connected to an alarm indicator light inside the carriage.

[0011] Preferably, a bearing is embedded at the connection between the I-shaped ring plate and the support frame in the middle, and the middle part of the I-shaped ring plate is snapped into the bearing.

[0012] Preferably, when the slide bar moves downward along the drive column to its limit position, the T-shaped rod applies a radial thrust to the inclined guide rail and forces the drive column to rotate 90° counterclockwise around its axis. At this time, the arc-shaped protrusion on the trigger plate contacts the alarm trigger button and applies pressure to it to trigger the alarm.

[0013] Preferably, a slider is fixedly installed at the bottom of each of the two fixed plates, and a groove is opened at the upper inner end of the two hinge plates, and the fixed plate is slidably installed in the groove by the slider.

[0014] Preferably, a return spring is fixedly installed at the bottom of both sliders, and the bottom of the return spring is fixedly installed at the lower end of the slide groove.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By setting the linkage between the trigger component and the alarm component, when the pressure between the contact wire and the pantograph sliding plate is too high, the pantograph sliding plate is pressed down, which drives the slide rod to slide down along the drive column. The T-shaped rod on the slide rod moves down in the inclined guide rail and applies radial thrust to it, forcing the drive column to rotate 90° counterclockwise. The drive column drives the trigger plate to rotate through the I-shaped ring plate and the rotating rod, so that the arc-shaped protrusion on the trigger plate contacts and presses the alarm trigger button, triggering the alarm circuit. The alarm indicator light in the carriage lights up, realizing timely warning of excessive pressure and avoiding excessive wear of the pantograph sliding plate and contact wire due to continuous overpressure.

[0017] 2. By setting up a cooperative structure between the reset spring, slider, and slide groove, when the excessive pressure is relieved, the elastic restoring force of the reset spring pushes the slider to move upward along the slide groove, thereby resetting the pantograph slide plate and slide rod. The T-shaped rod slides in the reverse direction in the inclined guide rail, causing the drive column to rotate clockwise to reset. The trigger plate is then reset, the arc-shaped protrusion separates from the alarm trigger button, and the alarm state is released. This ensures that the device can repeatedly and dynamically monitor pressure changes and continuously play an early warning role.

[0018] 3. By setting an arc-shaped protrusion, the arc-shaped protrusion contacts the alarm trigger button in an arc-shaped trajectory during the rotation of the trigger plate. Its arc-shaped surface can gradually increase the pressing pressure on the button, avoiding instantaneous rigid contact that could damage the button. It can stably press the alarm trigger button and ensure the reliable execution of the alarm action. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall side cross-sectional structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the front end structure of the support frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the explosion structure of the trigger component of this utility model;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the bottom of the support frame of this utility model.

[0024] Figure label:

[0025] 1. Pantograph sliding plate; 101. Hinge plate; 102. Fixing plate;

[0026] 21. Slide groove; 22. Return spring; 23. Slider;

[0027] 3. Support frame;

[0028] 4. Trigger assembly; 401. Slide rod; 402. Drive column; 403. Inclined guide rail; 404. Limit ring; 405. T-shaped rod; 406. I-shaped ring plate;

[0029] 51. Alarm trigger button; 52. Connecting cable;

[0030] 6. Alarm assembly; 601. Bearing; 602. Rotating rod; 603. Trigger plate; 604. Arc-shaped protrusion. Detailed Implementation

[0031] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0033] Example: Reference Figures 1-5 A contact network dynamic pressure detection device includes a pantograph sliding plate 1 and two hinge plates 101. Fixing plates 102 are fixedly installed at both ends of the bottom of the pantograph sliding plate 1. The bottom ends of the pantograph sliding plate 1 are slidably disposed on the upper ends of the two hinge plates 101 through the fixing plates 102. A support frame 3 is fixedly installed at the upper middle part of the two hinge plates 101. A triggering component 4 is provided at the upper end of the support frame 3.

[0034] The triggering component 4 includes a slide bar 401 and a drive column 402. Two T-shaped rods 405 are installed at the bottom of the slide bar 401. Two inclined guide rails 403 are opened on the surface of the drive column 402. The T-shaped rods 405 are snapped into the inside of the inclined guide rails 403. An I-shaped ring plate 406 is fixedly installed at the bottom of the drive column 402. An alarm component 6 is provided at the bottom of the support frame 3.

[0035] The alarm component 6 includes a trigger plate 603, the upper end of which corresponds to the bottom axis of the I-shaped ring plate 406, and an arc-shaped protrusion 604 is fixedly installed on the upper surface of its other end.

[0036] Specifically: During operation, when the pressure between the contact wire and the pantograph sliding plate 1 is too high, the pantograph sliding plate 1 will cause the sliding rod 401 to move downward. The T-shaped rod 405 at the bottom of the sliding rod 401 will then slide within the inclined guide rail 403 on the surface of the drive column 402. Because the T-shaped rod 405 and the inclined guide rail 403 are engaged, the sliding process will apply a radial thrust to the inclined guide rail 403, forcing the drive column 402 to rotate counterclockwise in one direction. The I-shaped ring plate 406 at the bottom of the drive column 402 will rotate synchronously, thereby driving the trigger plate of the alarm component 6. Rotation of 603 causes the arc-shaped protrusion 604 on the trigger plate 603 to move toward and contact the alarm trigger button 51, thus triggering an alarm for excessive pressure. The trigger assembly 4 drives the drive column 402 to rotate counterclockwise in one direction via the sliding of the T-shaped rod 405 along the inclined guide rail 403, thereby triggering the alarm assembly 6. This effectively reduces the reversing friction and impact between the T-shaped rod 405 and the inclined guide rail 403, and reduces the wear of the T-shaped rod 405, drive column 402, and inclined guide rail 403, thereby ensuring the long-term operational stability of the trigger assembly 4.

[0037] The top of the slide rod 401 is fixedly connected to the middle of the lower surface of the pantograph slide plate 1. Two limiting rings 404 are fixedly installed on the slide rod 401. Two T-shaped rods 405 are fixedly installed on the side surface of the limiting rings 404. The bottom of the slide rod 401 is slidably connected to the inner wall of the drive column 402 through the limiting rings 404. The bottom of the I-shaped ring plate 406 passes through the support frame 3 and a rotating rod 602 is fixedly installed. The bottom of the rotating rod 602 is fixedly installed on the upper end of the trigger plate 603 on the side away from the arc-shaped protrusion 604.

[0038] Specifically: The T-shaped rod 405 is fixed to the slide rod 401 by the limiting ring 404, which ensures the synchronous movement of the T-shaped rod 405 and the slide rod 401. The sliding engagement between the limiting ring 404 and the inner wall of the drive column 402 guides the movement of the slide rod 401, preventing the slide rod 401 from shifting and causing the T-shaped rod 405 to disengage from the inclined guide rail 403, thus ensuring the stability of force transmission. Simultaneously, the I-shaped ring plate 406 is connected to the trigger plate 603 via the rotating rod 602, allowing the rotation of the drive column 402 to be accurately transmitted to the trigger plate 603. This ensures that the arc-shaped protrusion 604 moves along a preset trajectory, improving the accuracy of alarm triggering and thus reliably monitoring excessive pressure between the contact wire and the pantograph.

[0039] An alarm trigger button 51 is fixedly installed at the bottom front end of the support frame 3. A connecting wire 52 is fixedly installed at the upper end of the alarm trigger button 51. The other end of the connecting wire 52 is connected to the alarm indicator light inside the carriage. A bearing 601 is embedded at the connection between the I-shaped ring plate 406 and the middle part of the support frame 3. The middle part of the I-shaped ring plate 406 is snapped into the bearing 601. When the slide rod 401 moves down along the drive column 402 to the limit position, the T-shaped rod 405 applies radial thrust to the inclined guide rail 403 and forces the drive column 402 to rotate 90° counterclockwise around its axis. At this time, the arc-shaped protrusion 604 on the trigger plate 603 contacts the alarm trigger button 51 and applies pressure to it to trigger the alarm.

[0040] Specifically: When the drive column 402 rotates, the I-shaped ring plate 406 rotates stably under the support of the bearing 601. The rotating rod 602 drives the trigger plate 603 to rotate synchronously. When the sliding rod 401 moves to its limit position, the arc-shaped protrusion 604 on the trigger plate 603 contacts the alarm trigger button 51 at the bottom of the support frame 3 and applies pressure. The button transmits the signal to the alarm indicator light inside the carriage through the connecting line 52, providing an alarm for excessive pressure. The cooperation between the bearing 601 and the I-shaped ring plate 406 reduces the frictional resistance between the drive column 402 and the support frame 3 during rotation, making the drive column 402 rotate more smoothly. This ensures that the thrust of the T-shaped rod 405 is efficiently converted into the rotational kinetic energy of the drive column 402, avoiding transmission lag due to excessive friction and ensuring timely alarm triggering. Simultaneously, the fixed arrangement of the alarm trigger button 51 and the connecting line 52 forms a stable transmission path from mechanical triggering to electrical alarm, ensuring that the excessive pressure signal is accurately fed back to the carriage, facilitating rapid response by staff.

[0041] Both fixed plates 102 have sliders 23 fixedly installed at their bottoms. The upper inner ends of the two hinge plates 101 are provided with grooves 21. The fixed plates 102 are slidably installed in the grooves 21 via the sliders 23. The bottoms of the two sliders 23 are fixedly installed with return springs 22. The bottoms of the return springs 22 are fixedly installed at the lower ends of the grooves 21. When the contact network dynamic pressure detection device is running, when the pressure between the contact network and the pantograph slide plate 1 is too high, the pantograph slide plate 1 will move downward, causing the fixed plates 102 at both ends to move downward synchronously. The sliders 23 at the bottom of the fixed plates 102 will slide downward along the grooves 21 inside the hinge plates 101. At this time, the return springs 22 at the bottom of the sliders 23 are compressed and store elastic potential energy. When the excessive pressure is relieved, the return springs 22 release the elastic potential energy, pushing the sliders 23 to slide upward along the grooves 21, causing the fixed plates 102 and the pantograph slide plate 1 to reset, so that the entire device returns to the initial monitoring state, so as to continuously monitor the pressure between the contact network and the pantograph.

[0042] The working principle of this utility model is as follows: In actual use, when the contact pressure between the contact wire and the pantograph slide plate 1 is within the normal range, the pantograph slide plate 1 maintains its initial position, the slide rod 401 and the T-shaped rod 405 are located in the upper part of the drive column 402, the arc-shaped protrusion 604 on the trigger plate 603 is separated from the alarm trigger button 51, the alarm circuit is disconnected, and the device does not issue an alarm.

[0043] When the contact pressure is too high, the pantograph slide plate 1 moves downward under the pressure of the cable, causing the slide rod 401, which is fixedly connected to it, to slide downward along the inner wall of the drive column 402. The T-shaped rod 405 on the slide rod 401 moves downward and slides in the inclined guide rail 403 on the surface of the drive column 402. Since the T-shaped rod 405 is engaged in the inclined guide rail 403, it will generate a radial thrust on the inner wall of the inclined guide rail 403 during its downward movement, forcing the drive column 402 to rotate 90° counterclockwise around its own axis. When the drive column 402 rotates, the I-shaped ring plate 406 fixed at its bottom rotates synchronously, driving the trigger plate 603 to rotate through the rotating rod 602. This causes the arc-shaped protrusion 604 at the other end of the trigger plate 603 to move towards the alarm trigger button 51, and finally contact the alarm trigger button 51 and apply pressure, triggering the alarm circuit. The alarm indicator light inside the carriage lights up after receiving the signal through the connecting wire 52, realizing the alarm prompt of excessive pressure.

[0044] When the excessive pressure is relieved, the return spring 22 at the bottom of the slider 23 pushes the slider 23 upward along the slide groove 21 of the hinge plate 101 under the action of elastic restoring force, which drives the fixed plate 102 and the pantograph slide plate 1 to return to their original positions. The slide rod 401 moves upward with the pantograph slide plate 1, and the T-shaped rod 405 slides in the opposite direction in the inclined guide rail 403, generating a reverse thrust on the inclined guide rail 403, causing the drive column 402 to rotate clockwise to return to its original position. The I-shaped ring plate 406, the rotating rod 602 and the trigger plate 603 then return to their original positions. The arc-shaped protrusion 604 separates from the alarm trigger button 51, the alarm state is released, and the device returns to the initial monitoring state, which can continue to monitor the dynamic pressure between the contact wire and the pantograph slide plate 1.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A contact network dynamic pressure detection device, comprising a pantograph sliding plate (1) and two hinged plates (101), characterized in that: The bottom ends of the pantograph slide plate (1) are fixedly installed with fixing plates (102). The bottom ends of the pantograph slide plate (1) are slidably disposed on the upper ends of two hinge plates (101) through the fixing plates (102). A support frame (3) is fixedly installed on the upper middle part of the two hinge plates (101). A triggering component (4) is provided on the upper end of the support frame (3). The triggering component (4) includes a slide rod (401) and a drive column (402). Two T-shaped rods (405) are installed at the bottom of the slide rod (401). Two inclined guide rails (403) are opened on the surface of the drive column (402). The T-shaped rods (405) are snapped into the inclined guide rails (403). An I-shaped ring plate (406) is fixedly installed at the bottom of the drive column (402). An alarm component (6) is provided at the bottom of the support frame (3). The alarm component (6) includes a trigger plate (603), the upper end of which corresponds to the bottom axis of the I-shaped ring plate (406), and an arc-shaped protrusion (604) is fixedly installed on the upper surface of its other end.

2. The contact wire dynamic pressure detection device according to claim 1, characterized in that: The top of the slide rod (401) is fixedly connected to the middle of the lower surface of the pantograph slide plate (1). Two limiting rings (404) are fixedly installed on the slide rod (401), and two T-shaped rods (405) are fixedly installed on the side surface of the limiting rings (404).

3. The contact wire dynamic pressure detection device according to claim 2, characterized in that: The bottom of the slide rod (401) is slidably connected to the inner wall of the drive column (402) through the limiting ring (404). The bottom of the I-shaped ring plate (406) is fixedly installed with a rotating rod (602) through the support frame (3). The bottom of the rotating rod (602) is fixedly installed on the upper end of the trigger plate (603) away from the arc-shaped protrusion (604).

4. The contact wire dynamic pressure detection device according to claim 1, characterized in that: An alarm trigger button (51) is fixedly installed at the bottom front end of the support frame (3). A connecting line (52) is fixedly installed at the top end of the alarm trigger button (51). The other end of the connecting line (52) is connected to the alarm indicator light inside the carriage.

5. The contact wire dynamic pressure detection device according to claim 1, characterized in that: A bearing (601) is embedded at the connection between the I-shaped ring plate (406) and the support frame (3), and the middle part of the I-shaped ring plate (406) is snapped into the bearing (601).

6. The contact wire dynamic pressure detection device according to claim 4, characterized in that: When the slide bar (401) moves downward along the drive column (402) to its limit position, the T-shaped bar (405) applies a radial thrust to the inclined guide rail (403) and forces the drive column (402) to rotate 90° counterclockwise around its axis. At this time, the arc-shaped protrusion (604) on the trigger plate (603) contacts the alarm trigger button (51) and applies pressure to it to trigger the alarm.

7. The contact wire dynamic pressure detection device according to claim 1, characterized in that: The bottom of each of the two fixed plates (102) is fixedly installed with a slider (23), and the upper part of the inner side of the two hinge plates (101) is provided with a groove (21). The fixed plate (102) is slidably installed in the groove (21) by the slider (23).

8. The contact wire dynamic pressure detection device according to claim 7, characterized in that: A return spring (22) is fixedly installed at the bottom of each of the two sliders (23), and the bottom of the return spring (22) is fixedly installed at the lower end of the slide groove (21).

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