Adjustable AF line suspension anti-swing column structure

Abstract

The utility model discloses an adjustable AF line suspension anti-swing hanging column structure, which is installed on the top of a tunnel through bolt connection holes and is hinged to a base plate at the upper end and suspended to an AF line through an insulating expansion seat at the lower end. An adjustable length expansion support rod is arranged between the base plate and the hanging column to flexibly adjust the suspension height of the AF line and the distance between the AF line and a PW line to adapt to the error of a preset base. The insulating expansion seat and the expansion support rod cooperate with each other to realize length adjustment and locking, and a knob and a positioning table cooperate to ensure accurate operation.

Description

Technical Field

[0001] This utility model relates to the field of overhead contact line power accessories technology, and in particular to an adjustable AF line suspension anti-sway column structure. Background Technology

[0002] In railway electrification systems, the AF line (positive feeder) is an important component of the overhead contact system. The stability and accuracy of its suspension directly affect the current collection quality of the train's pantograph and the reliability of the entire power supply system.

[0003] When installing AF line support columns inside a tunnel, the pre-installed AF line support column bases at the tunnel ceiling inevitably have some errors during construction. This makes it difficult to directly ensure that the AF line reaches the ideal horizontal and vertical position during installation, often requiring complex adjustments later, which increases the construction difficulty and cost.

[0004] Furthermore, during train operation, the AF line is subject to airflow disturbances and the contact force of the pantograph, resulting in lateral swaying. Traditional rigid suspension column structures cannot effectively resist this swaying. Excessive swaying not only affects the electrical performance of the AF line but may also cause interference with surrounding equipment and even lead to safety accidents. Therefore, developing an adjustable AF line suspension anti-sway column structure is of significant practical importance. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose an adjustable AF line suspension anti-sway column structure to solve the problems mentioned in the background art.

[0006] To achieve the above technical objectives, the present invention provides an adjustable AF line suspension anti-sway column structure, comprising a base plate, on which several through bolt connection holes are provided. A column and a telescopic support rod are provided below the base plate. The upper end of the column is hinged to the base plate, and the lower end is provided with an insulating telescopic seat. The length of the telescopic support rod is adjustable, with its upper end hinged to the base plate and its lower end hinged to the column. The insulating telescopic seat includes an insulator and a tightening ring. The upper end of the insulator is provided with a telescopic cavity, and the lower end is provided with a cable clamp. A tightening sleeve is fixedly provided at the bottom of the telescopic cavity. Several clamping pieces are provided on the upper part of the tightening sleeve. The outer ring surface of the tightening ring is threadedly engaged with the inner wall of the telescopic cavity. The lower end of the column is located inside the tightening sleeve. When the tightening ring is screwed into the telescopic cavity, its inner ring surface pushes the clamping pieces inward to tighten.

[0007] Furthermore, the suspension column is equipped with an anti-detachment device, which includes a positioning ring and a limiting plate. The positioning ring is coaxial with the suspension column and fixedly mounted thereon. The upper end of the limiting plate is fixedly connected to the positioning ring, and the lower section is provided with a guide strip hole along the length direction of the suspension column. The upper section of the insulator is provided with a limiting bolt passing through the guide strip hole.

[0008] Furthermore, the positioning ring is provided with a connecting seat that connects to the telescopic support rod, the inner wall of the clamping plate and the lower end of the hanging column are both provided with rough friction surfaces, and the top outer side of the clamping plate is provided with a wedge that expands outward.

[0009] Furthermore, the telescopic support rod includes an outer cover and an inner core. The inner core is slidably disposed inside the outer cover. One end of the outer cover and the inner core are respectively hinged to the base plate and the connecting seat. Positioning strips are provided on both sides of the inner core. Two symmetrical clamping strips are provided inside the outer cover. The positioning strips are disposed between the clamping strips and the inner wall of the outer cover. An elliptical cam is provided between the two clamping strips. The major axis of the cam is longer than the distance between the two clamping strips. A knob is provided on the outer side of the inner core. The central axis of the knob passes through the inner core and connects to the center point of the cam.

[0010] Furthermore, the outer surface of the inner core is provided with a positioning platform, the positioning platform is provided with a semi-circular arc-shaped guide groove, and the knob is provided with a guide post that matches the arc-shaped guide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model include:

[0012] 1. This utility model features an adjustable telescopic support rod, with its upper end hinged to the base plate and its lower end hinged to the suspension column. Adjusting the length of the telescopic support rod changes the relative position and angle between the suspension column and the base plate. This design can flexibly adapt to complex installation environments such as different tunnel spatial layouts and slopes, while precisely meeting the specific requirements of different lines for the suspension height of the AF line and the distance between it and the PW line, thus reducing construction difficulty.

[0013] 2. The insulating telescopic seat of this utility model uses a rotating tightening ring to clamp the lower end of the hanging column with a clamping plate. The inner wall of the clamping plate and the lower end of the hanging column are provided with rough friction surfaces, and a wedge block is provided on the outer side of the top of the clamping plate, greatly enhancing the reliability of the connection. The telescopic support rod uses a cam and clamping bar to achieve length adjustment and locking. Combined with the guide post on the knob and the arc-shaped guide groove on the positioning platform, precise control of operation can be achieved to avoid over-rotation and ensure the locking effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an adjustable AF line suspension anti-sway column structure provided by this utility model;

[0015] Figure 2This is a schematic diagram of an adjustable AF line suspension anti-sway column structure with an insulating telescopic seat provided by this utility model;

[0016] Figure 3 This is a schematic diagram of an anti-detachment device for an adjustable AF line suspension anti-sway column structure provided by this utility model;

[0017] Figure 4 This is a schematic diagram of a telescopic support rod for an adjustable AF line suspension anti-sway column structure provided by this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Reference Figure 1 This utility model provides an adjustable AF line suspension anti-sway column structure, which mainly includes a base plate 1, a column 2, a telescopic support rod 5, and an insulated telescopic seat 3. The base plate 1 serves as the installation foundation of the entire structure, and has several through bolt connection holes evenly distributed on it. Through these bolt connection holes, the base plate 1 can be stably installed on the pre-set installation structure at the top of the tunnel.

[0020] The upper end of the hanging column 2 is hinged to the base plate 1, while the lower end is connected to the insulated telescopic seat 3 for suspending the AF line. The telescopic support rod 5 is located between the base plate 1 and the hanging column 2, with its upper end also hinged to the base plate 1 and its lower end hinged to the hanging column 2. The length of the telescopic support rod 5 is adjustable. By adjusting its length, the relative position and angle between the hanging column 2 and the base plate 1 can be changed, thereby achieving flexible adjustment of the AF line suspension height and the distance between it and the PW line to adapt to different installation environments and line requirements.

[0021] Reference Figure 2 The insulating telescopic base 3 includes an insulator 301 and a tightening ring 305. The upper end of the insulator 301 has a telescopic cavity 302, and the lower end is fitted with a cable clamp 6 for securely holding the AF wire. At the bottom of the telescopic cavity 302, a tightening sleeve 303 is fixedly installed. Several clamping pieces 304 are evenly distributed on the upper part of the tightening sleeve 303. The outer ring surface of the tightening ring 305 is connected to the inner wall of the telescopic cavity 302 by a threaded connection.

[0022] When adjusting the tightness of the connection between the hanger 2 and the insulator 301, the tightening ring 305 is rotated, causing it to screw into the telescopic cavity 302. During this screwing process, the inner ring surface of the tightening ring 305 gradually pushes the clamping plate 304 inward, thus tightly clamping the lower end of the hanger 2. This design not only achieves a reliable connection between the hanger 2 and the insulator 301, but also enhances the stability of the connection by providing a rough friction surface on both the inner wall of the clamping plate 304 and the lower end of the hanger 2. This rough friction surface increases the friction between the two, further improving the reliability of the connection. Simultaneously, a wedge extending outward is provided on the top outer side of the clamping plate 304. When the tightening ring 305 screws inward, pushing the clamping plate 304 to tighten, the wedge better guides the clamping plate 304 to press inward, making the clamping force more evenly distributed at the lower end of the hanger 2, further improving the connection effect.

[0023] To prevent accidental detachment of the suspension column 2 from the insulated telescopic seat 3 during adjustment, an anti-detachment device 4 is installed between them. (See reference...) Figure 3 The anti-detachment device 4 mainly consists of a positioning ring 401 and a limiting plate 402. The positioning ring 401 is coaxially arranged with the hanging column 2 and fixed to the hanging column 2 by bolts. A connecting seat 404 connected to the telescopic support rod 5 is provided on the positioning ring 401. The upper end of the limiting plate 402 is fixedly connected to the positioning ring 401, and its lower section is provided with a guide strip hole 403 along the length direction of the hanging column 2. A limiting bolt 7 passing through the guide strip hole 403 is provided on the upper section of the insulator 301.

[0024] Reference Figure 4 The telescopic support rod 5 consists of an outer cover 501 and an inner core 502. The inner core 502 is slidably disposed inside the outer cover 501, and one end of the outer cover 501 and the inner core 502 are respectively hinged to the connecting seat 404 on the base plate 1 and the positioning ring 401.

[0025] To ensure that the inner core 502 slides smoothly within the outer cover 501 without wobbling, positioning strips 508 are provided on both sides of the inner core 502, and two symmetrical clamping strips 506 are provided inside the outer cover 501. The positioning strips 508 are positioned between the clamping strips 506 and the inner wall of the outer cover 501. An elliptical cam 507 is provided between the two clamping strips 506, and the major axis of the cam 507 is longer than the distance between the two clamping strips 506. A knob 503 is provided on the outer side of the inner core 502, and the central axis of the knob 503 passes through the inner core 502 and connects to the center point of the cam 507.

[0026] When the length of the telescopic support rod 5 needs to be adjusted, simply rotate the knob 503 to rotate the cam 507. When the long axis of the cam 507 is aligned with the arrangement direction of the clamping strips 506, the inner core 502 can slide freely within the outer cover 501, thereby adjusting the length of the telescopic support rod 5. After adjusting to the desired length, rotate the knob 503 again to make the long axis of the cam 507 perpendicular to the arrangement direction of the clamping strips 506. The protruding part of the cam 507 will press against the clamping strips 506, causing the clamping strips 506 to tightly clamp the positioning strip 508, thus fixing the inner core 502 within the outer cover 501 and locking the length of the telescopic support rod 5.

[0027] To further improve the accuracy and stability of the knob 503 operation, a positioning platform 504 is provided on the outer surface of the inner core 502. The positioning platform 504 is provided with a semi-circular arc-shaped guide groove 505, and the knob 503 is provided with a guide post that matches the arc-shaped guide groove 505. During the rotation of the knob 503, the guide post will slide along the arc-shaped guide groove 505 to prevent the knob 503 from being rotated too much and failing to properly lock the inner core 502 and the outer cover 501.

[0028] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An adjustable AF line suspension anti-sway column structure, comprising a base plate, wherein the base plate is provided with a plurality of through bolt connection holes, characterized in that: A hanging column and a telescopic support rod are provided below the base plate. The upper end of the hanging column is hinged to the base plate, and the lower end is provided with an insulating telescopic seat. The length of the telescopic support rod is adjustable. Its upper end is hinged to the base plate, and its lower end is hinged to the hanging column. The insulating telescopic seat includes an insulator and a tightening ring. The upper end of the insulator is provided with a telescopic cavity, and the lower end is provided with a cable clamp. A tightening sleeve is fixedly provided at the bottom of the telescopic cavity. Several clamping pieces are provided on the upper part of the tightening sleeve. The outer ring surface of the tightening ring is threadedly engaged with the inner wall of the telescopic cavity. The lower end of the hanging column is located inside the tightening sleeve. When the tightening ring is screwed into the telescopic cavity, its inner ring surface pushes the clamping pieces to retract inward.

2. The adjustable AF line suspension anti-sway column structure according to claim 1, characterized in that: The suspension column is equipped with an anti-detachment device, which includes a positioning ring and a limiting plate. The positioning ring is coaxial with the suspension column and fixedly mounted thereon. The upper end of the limiting plate is fixedly connected to the positioning ring, and the lower section is provided with a guide strip hole along the length direction of the suspension column. The upper section of the insulator is provided with a limiting bolt passing through the guide strip hole.

3. The adjustable AF line suspension anti-sway column structure according to claim 2, characterized in that: The positioning ring is provided with a connecting seat that connects to the telescopic support rod. The inner wall of the clamp and the lower end of the hanging column are both provided with rough friction surfaces. The top outer side of the clamp is provided with a wedge that expands outward.

4. The adjustable AF line suspension anti-sway column structure according to claim 3, characterized in that: The telescopic support rod includes an outer cover and an inner core. The inner core is slidably disposed inside the outer cover. One end of the outer cover and the inner core are respectively hinged to the base plate and the connecting seat. Positioning strips are provided on both sides of the inner core. Two symmetrical clamping strips are provided inside the outer cover. The positioning strips are disposed between the clamping strips and the inner wall of the outer cover. An elliptical cam is provided between the two clamping strips. The major axis of the cam is longer than the distance between the two clamping strips. A knob is provided on the outer side of the inner core. The central axis of the knob passes through the inner core and connects to the center point of the cam.

5. The adjustable AF line suspension anti-sway column structure according to claim 4, characterized in that: The outer surface of the inner core is provided with a positioning platform, the positioning platform is provided with a semi-circular arc-shaped guide groove, and the knob is provided with a guide post that matches the arc-shaped guide groove.

Images