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CN-224210931-U - Low-clearance suspension device of rail transit rigid suspension contact net

CN224210931UCN 224210931 UCN224210931 UCN 224210931UCN-224210931-U

Abstract

The utility model discloses a low-clearance suspension device of a rail transit rigid suspension contact net, which comprises a mounting base, wherein the mounting base is connected with the top of a tunnel, a rigid suspension support insulator and a positioning wire clamp are sequentially connected below the mounting base, the positioning wire clamp comprises a wire clamp body formed by bending a stainless steel plate, sliding blocks are arranged on two sides below the wire clamp body, a limiting part extending towards the middle of the wire clamp body is arranged at the bottom of the sliding blocks, a space for clamping a low-clearance bus bar is formed between the limiting part and the wire clamp body, positioning plates for clamping the positioning wire clamp are arranged on two sides of the upper part of the low-clearance bus bar, and a jaw for clamping a contact wire is arranged on the lower part of the low-clearance bus bar. The positioning wire clamp has better mechanical property, is not easy to break, is convenient to form a structure with smaller height and size, integrally reduces vertical installation space, is convenient to install, ensures that trains can normally pass in a region with lower clearance in a tunnel without being influenced, and can meet the requirements of a stricter clearance height tunnel and a dynamic envelope line.

Inventors

  • WANG QIUSHI
  • Yin Junquan
  • ZHOU ZHANCHENG
  • YAN XIAOBIN
  • YANG HUI
  • FANG YI
  • TAO ZHIJIE
  • Ge Bingfan

Assignees

  • 富雷尔福莱电气化设备(广东)有限公司

Dates

Publication Date
20260508
Application Date
20250630

Claims (10)

  1. 1. The low-clearance suspension device for the rail transit rigid suspension contact net is characterized by comprising a mounting base (1), wherein the mounting base (1) is connected with the top of a tunnel, and a rigid suspension support insulator (2) and a positioning wire clamp (3) are sequentially connected below the mounting base (1); The positioning wire clamp (3) comprises a wire clamp body (31) formed by bending a stainless steel plate, sliding blocks (32) are arranged on two sides below the wire clamp body (31), a limiting part (33) extending towards the middle of the wire clamp body (31) is arranged at the bottom of the sliding blocks (32), and a space for clamping the low-clearance bus bar (4) is formed between the limiting part (33) and the wire clamp body (31); The two sides of the upper part of the low clearance busbar (4) are provided with positioning plates (41) for clamping the positioning wire clamps (3), and the lower part of the low clearance busbar (4) is provided with a jaw (42) for clamping the contact wire (5).
  2. 2. The low-clearance suspension device for the rail transit rigid suspension contact network according to claim 1, wherein the sliding block (32) is an arc-shaped conductive sliding block, the sliding block (32) and the inward side surface of the low-clearance bus bar (4) are arc-shaped, and/or the sliding block (32) is fixedly arranged with the wire clamp body (31) through a positioning bolt piece.
  3. 3. The low clearance suspension device of the rail transit rigid suspension catenary according to claim 1, wherein the overall height of the wire clamp body (31) and the slider (32) is 35mm plus or minus 2mm, and the height of the low clearance busbar (4) is 70mm plus or minus 0.5mm.
  4. 4. Rail transit rigid suspension catenary low clearance suspension device according to claim 1, characterized in that the opening size of the jaws (42) of the low clearance busbar (4) in natural state is larger than the groove bottom pitch size of the contact wires (5) at the groove.
  5. 5. The rail transit rigid suspension catenary low headroom suspension device of claim 4, wherein the opening size of the jaw (42) of the low headroom bus bar (4) in a natural state is 7.2 mm-8.4 mm.
  6. 6. The low clearance suspension device of the rail transit rigid suspension contact net according to claim 1, wherein two side walls (43) are arranged on two sides below the positioning plate (41) of the low clearance bus bar (4), jaws (42) are formed at the lower ends of the side walls (43) on the two sides, and tensioning piece mounting holes (44) which are communicated with each other are formed in the side walls (43) on the two sides and are connected through tensioning pieces.
  7. 7. The rail transit rigid suspension catenary low headroom suspension device of claim 6, wherein the tension member mounting holes (44) are a plurality distributed along the length of the low headroom bus bar (4).
  8. 8. The rail transit rigid suspension catenary low headroom suspension device of claim 6, wherein the tension member is a tension bolt.
  9. 9. The low headroom suspension device of the rail transit rigid suspension catenary according to any one of claims 1 to 8, wherein the installation base (1) is plate-shaped, the installation base (1) is fixedly installed with the tunnel top near both ends by anchor bolts (6), the middle part of the installation base (1) is bent, an upward bulge is formed with respect to both ends of the installation base (1), an accommodating space is formed below the bulge, and at least a part of the rigid suspension support insulator (2) is positioned in the accommodating space.
  10. 10. The rail transit rigid suspension catenary low headroom suspension device according to any one of claims 1-8, characterized in that the low headroom bus bar (4) is commonly clamped and suspended by a plurality of rail transit rigid suspension catenary low headroom suspension devices in the length direction, and the distance between two adjacent rail transit rigid suspension catenary low headroom suspension devices is 5m±0.5m.

Description

Low-clearance suspension device of rail transit rigid suspension contact net Technical Field The utility model belongs to the technical field of rigid overhead line system suspension devices, and particularly relates to a low-clearance suspension device of a rail transit rigid overhead line system. Background The clearance refers to the effective vertical space between the inner wall of the tunnel and the track surface or equipment, and is a key parameter for ensuring the safe running of the train. The low-clearance rigid contact net is applied to space-limited scenes such as urban rail transit, and the whole height of the contact net system (namely the vertical distance from the rail surface to the top of the contact net) needs to be controlled within a specific limit value. The rigid contact net suspension device is used as a common device in a rigid contact net power supply system and plays a role in supporting and fixing the bus bars. At present, a low-clearance rigid contact net suspension mainly comprises a mounting base, an insulator, a positioning wire clamp and a bus bar. In the contact net construction process, normal installation cannot be performed due to factors such as early tunnel shield construction, track laying operation, uneven sinking of tunnels and the like or partial tunnel clearance deficiency. In particular, the existing positioning wire clamp is about 52mm in height, occupies a larger vertical space, is difficult to install in a lower clearance environment, is made of aluminum bronze, is brittle in material and easy to break by adopting a casting process, and also has the problems of larger vertical space occupation and difficult installation in a low clearance environment because the existing busbar is about 110mm in height. Disclosure of utility model The utility model aims to solve the technical problems of providing the low clearance suspension device for the rigid suspension contact network of the rail transit, solving the problems of large occupied clearance height, inconvenient installation and maintenance and the like of the positioning wire clamps and the bus bars in the existing suspension device, obviously reducing the height of core components through compact structure design on the premise of ensuring mechanical performance and electrical performance, realizing the high-efficiency utilization of the clearance height, meeting the strict requirements of urban rail transit and other scenes on the confined space, and improving the stability and reliability of a contact network system. According to the technical scheme, the low-clearance suspension device of the rail transit rigid suspension contact net comprises a mounting base, wherein the mounting base is connected with the top of a tunnel, a rigid suspension support insulator and a positioning wire clamp are sequentially connected below the mounting base, the positioning wire clamp comprises a wire clamp body formed by bending a stainless steel plate, sliding blocks are arranged on two sides below the wire clamp body, a limiting part extending towards the middle of the wire clamp body is arranged at the bottom of the sliding blocks, a space for clamping a low-clearance bus bar is formed between the limiting part and the wire clamp body, positioning plates for clamping the positioning wire clamp are arranged on two sides of the upper part of the low-clearance bus bar, and a jaw for clamping a contact line is arranged on the lower part of the low-clearance bus bar. In some embodiments, the slider is an arcuate conductive slider that is arcuate with the inward facing side of the low clearance bus bar. And/or, in some embodiments, the slider is mounted and secured to the clamp body by a set screw member. In some embodiments, the overall height of the clip body and slider is 35mm±2mm, and the height of the low clearance bus bar is 70mm±0.5mm. In some embodiments, the opening dimension of the jaws of the low clearance buss is greater than the groove bottom pitch dimension of the contact wire at the groove in the natural state. In some embodiments, the jaw of the low clearance busbar has an opening size of 7.2mm to 8.4mm in a natural state. In some embodiments, the low clearance busbar is provided with two side walls at two sides below the positioning plate, the lower ends of the side walls at two sides form a jaw, and the side walls at two sides are provided with tension piece mounting holes which are communicated with each other and are connected through tension pieces. In some embodiments, the tension member mounting holes are a plurality distributed along the length of the low clearance bus bar. In some embodiments, the tension member is a tension bolt. In some embodiments, the mounting base is plate-shaped, the mounting base is fixedly mounted with the top of the tunnel by an anchor bolt near two ends, the middle of the mounting base is bent, an upward bulge is formed relative to the two ends of the mounting base, a contai