CN218991087U

CN218991087U - Communication base station pole-holding tower for railway tunnel portal field level

Info

Publication number: CN218991087U
Application number: CN202320123098.4U
Authority: CN
Inventors: 李剑巧; 高玉芬; 李�浩; 魏东; 段彦芬
Original assignee: Yunnan Branch China Tower Co ltd
Current assignee: Yunnan Branch China Tower Co ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-05-09
Anticipated expiration: 2033-01-13

Abstract

The application discloses communication base station pole-holding tower for railway tunnel portal field level ground includes: the antenna comprises a vertical pole column body, an antenna mounting support arm, a communication antenna, a mounting foundation and a tunnel portal field apron; the installation foundation is arranged on the tunnel portal field level ground; the tunnel portal field plateau is arranged at the railway tunnel portal; the upright post column body is vertically arranged on the installation foundation; the upper part of the upright post column body is provided with at least one equipment mounting support arm and one antenna mounting support arm; the RRU is mounted on the antenna mounting arm. The tower starts according to engineering practice to ensure that the requirements of railway departments on safety are met and the reverse pole distance is ensured, and the holding pole tower can meet the requirements of more than 90% of tunnel base stations on the reverse pole distance and meet the technical specification requirements of the railway departments.

Description

Communication base station pole-holding tower for railway tunnel portal field level

Technical Field

The application relates to the technical field of railway tunnel communication base station installation, in particular to a communication base station pole tower for a railway tunnel portal field level.

Background

In order to realize full line coverage of the railway line operators public network signals, the construction process of the railway public network signals is mainly realized by the following method:

1. the construction scheme in the tunnel is as follows: and a radio remote unit and a leakage cable are adopted in the tunnel for covering. In most constructions, two leaky cables are adopted, and an MIMO scheme is adopted, so that the optimal signal coverage effect is ensured for matching the window positions of the motor car, the distance between the leaky cables is 0.5 meter, one leaky cable is arranged at a position 2.1 meters away from the rail surface, and the other leaky cable is arranged at a position 2.6 meters away from the rail surface.

2. In the exposed area of the tunnel, the signal coverage is realized by the existing communication towers or the construction of new communication towers in the area within 500 meters from the railway.

3. Tunnel portal: and constructing a lawn base station, and connecting signals inside and outside the tunnel.

The construction schemes of the scheme 1 and the scheme 2 are mature, and in order to ensure continuous coverage of signals inside and outside a tunnel, a scheme 3 is often adopted to join signals at a tunnel entrance. There is no standardized pylon structure for this solution. The existing common holding pole structure has two modes: firstly, a holding pole is additionally arranged on the top of a tunnel, but cannot be installed and used in consideration of safety; secondly, constructing a lawn base station on the space of the tunnel portal, namely a lawn area.

However, the tunnel portal is provided with a holding pole, which has the following problems:

(1) The tunnel portal of the high-speed rail has limited available space and does not have the condition of building the high-speed iron tower with the height of more than 18 meters; meanwhile, as the signal coverage of operators requires the base station to be as close to the railway line as possible, but the railway is in safety consideration, the tower body arranged around the railway must meet the requirement of the reverse pole distance, so that the construction of the iron tower exceeding the requirement of the reverse pole distance is not allowed.

(2) The area of the area available for construction in the high-speed railway tunnel portal area is small, and particularly under the mountain area environment of the plateau, the problem is particularly prominent, enough stay wire positions cannot be reserved, and the technical standard of the 9-meter stay wire tower cannot meet the technical standard requirement of railway departments on safety.

The existing solution is to construct a plurality of 6-meter holding poles to hang carrier antennas at the top end of a tunnel portal, but the tunnel wall is damaged, the possibility that the antennas fall off a railway to cause safety accidents exists, and the safety risk is high. And be subject to tunnel portal space, unable a plurality of antennas of hanging of establishing on the pole is embraced to current structure, leads to the signal of part operators to be unable to accomplish and links up and cover in the tunnel.

Disclosure of Invention

The utility model provides a communication base station pole tower for railway tunnel portal field level is provided to above-mentioned technical problem, can install on the field level of tunnel portal under satisfying the pole distance of falling the prerequisite, still can install a plurality of antennas on this pole, effectively solves the technical problem that a plurality of operators signal links up and covers in the tunnel inside and outside the tunnel.

The application provides a communication base station pole-holding tower for railway tunnel portal field level ground, include: the system comprises a vertical pole column body, an antenna mounting support arm, a communication antenna, RRU equipment, a mounting foundation and a tunnel portal field apron;

the installation foundation is arranged on the tunnel portal field level ground; the tunnel portal field plateau is arranged at the railway tunnel portal; the upright post column body is vertically arranged on the installation foundation;

the upper part of the upright post column body is provided with at least one antenna mounting support arm;

the communication antenna and the RRU equipment are arranged on the antenna mounting support arm;

the upper part of the upright post column body is provided with a mounting equipment bracket, and the mounting equipment is arranged on the mounting equipment bracket.

Preferably, the height of the pole holding tower is 6-12 m; the external diameter of the upright post column body is 200 mm-250 mm.

Preferably, it comprises: distribution box and light exchange box; the distribution box is electrically connected with the communication antenna and the mounting equipment respectively; the distribution box is arranged on the tunnel portal field level ground; the optical cross box is respectively and optically connected with the RRU equipment and the mounting equipment; the light traffic box is arranged on a tunnel portal field level ground.

Preferably, it comprises: a ladder stand; the crawling ladder is arranged on one side of the upright post column body; the cat ladder includes: connecting the main rod and the cross rods; two ends of the connecting main rod are respectively connected with the upright post body;

each cross rod is arranged on the connecting main rod at intervals;

the cross bars are staggered in pairs and are arranged at two sides of the connecting main rod.

Preferably, it comprises: an equipment mounting bracket; the equipment mounting bracket is arranged in the middle of the upright post column; the mounting equipment is arranged on the equipment mounting bracket.

Preferably, it comprises: a lightning rod; the lightning rod is arranged at the top of the upright post column body.

Preferably, it comprises: overhauling a feeder line port; the overhaul feeder line port is arranged on the vertical rod cylinder close to the ground.

Preferably, it comprises: a base; the pole setting cylinder passes through base and installation basis fixed connection.

The beneficial effects that this application can produce include:

1) The communication base station pole-holding tower for the railway tunnel portal field level ground provided by the application starts according to engineering practice to ensure that the requirements of railway departments on safety are met, the pole-holding distance is ensured, the pole-holding tower can meet the requirements of more than 90% of tunnel base stations on the pole-holding distance, and the technical specification requirements of the railway departments are met.

2) The communication base station pole tower for the railway tunnel portal site can meet the construction requirements of 2 operators for mounting 4 communication systems, and can meet the construction requirements of 3 operators under the condition of current electric cooperation, if the construction requirements are more than 2 operators, the construction requirements can be increased by 1 station on the site.

3) The communication base station pole-holding tower for the railway tunnel portal field level provided by the application can solve the seamless connection of signals inside and outside a tunnel, can simultaneously use the field level station as a macro station according to the requirement, cover partial open areas outside the tunnel, can also be used as a grotto installation remote equipment, and can be used as a source point of signals in the tunnel to cover the signals in the tunnel.

Drawings

Fig. 1 is a schematic diagram of a top view structure of a communication base station pole tower for a railway tunnel portal field level provided by the application;

fig. 2 is a schematic view of a front view structure of a using state of a communication base station holding pole for a railway tunnel portal field level provided by the application;

fig. 3 is a schematic diagram of a front view cross-sectional structure of a lightning rod provided by the application;

fig. 4 is a schematic view of a front view structure of a ladder stand provided in the present application;

fig. 5 is a schematic front view of an antenna mounting arm according to the present application;

FIG. 6 is a schematic view of a partial enlarged structure of an inspection feeder port provided in the present application;

legend description:

1. a lightning rod; 11. a needle body; 12. a mounting base; 21. an antenna mounting arm; 22. mounting a vertical rod; 23. a connecting rod; 3. a pole setting column body; 34. a distribution box; 35. light exchange box; 36. installing a foundation; 37. tunnel portal plateaus; 33. a ladder stand; 31. a cross bar; 32. the connecting main rod; 4. mounting a device bracket; 5. overhauling a feeder line port; 6. and (5) a base.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Technical means which are not described in detail in the application and are not used for solving the technical problems of the application are all arranged according to common general knowledge in the field, and various common general knowledge arrangement modes can be realized.

Referring to fig. 1 to 6, the communication base station pole-holding tower for the railway tunnel portal field level 37 provided by the application comprises a pole-holding column body 3, wherein the pole-holding column body 3 is arranged on the tunnel portal field level 37 of the railway track tunnel portal outer area through a mounting foundation 36. The lightning rod 1 is arranged on the top surface of the vertical rod cylinder 3 according to the safety lightning protection requirement.

In a specific embodiment, the lightning rod 1 used comprises: a mounting seat 12 and a needle body 11 arranged on the top surface of the mounting seat 12; the needle body 11 is detachably connected with the vertical rod cylinder 3 through the mounting seat 12.

At least one antenna mounting support arm 21 is arranged at intervals on the upper part of the upright post column 3, so that the mounting of the communication antenna and RRU equipment on the upright post column 3 can be realized conveniently. In one embodiment, the antenna mounting arm 21 includes: a vertical rod 22 and a connecting rod 23 which are arranged at intervals are arranged; one end of the connecting rod 23 is connected with the upright post column 3; two ends of the mounting vertical rod 22 are respectively connected with a connecting rod 23; the mounting device holder 4 is connected to a connecting rod 23. The mounting device bracket 4 can be used for mounting devices, such as POI mounting devices, according to the needs of an operator or a user.

Specifically, in order to meet the safety requirement standard set at the tunnel portal, the height of the pole tower is 6-12 m; the outer diameter of the vertical pole column body 3 is 200 mm-250 mm.

The upper portion of the upright post column 3 may further be provided with a plurality of mounting devices 4 required by different operators as required, where the mounting devices 4 are mounted by a common structure such as a bracket, for example, in a specific embodiment, the mounting bracket includes: hoops and mounting rods arranged in pairs; the anchor ear is arranged on the upright post column 3 at intervals; two ends of the mounting rod are respectively connected with 2 anchor ears. The mounting device 4 is hung on the mounting rod to realize the dismounting and mounting. When the user cancels the order, the mounting device 4 can be removed and replaced.

Meanwhile, according to the use requirements of the mounting equipment and the communication antenna, a distribution box 34 and an optical cross box 35 can be arranged on a tunnel portal site 37, and the optical cross box 35 is respectively and optically connected with the RRU equipment and the mounting equipment; the distribution box 34 is electrically connected with the communication antenna to realize power supply and data communication transmission. The sizes of the distribution box 34 and the light traffic box 35 are adjusted and installed according to the actual area of the tunnel entrance apron 37.

The installation foundation 36 is adjusted according to the existing arrangement mode and structure according to the tower height, and meets the national standard requirements.

In order to facilitate maintenance and replacement of the communication antenna and the mounting equipment by an maintainer, a crawling ladder 33 is arranged on one side of the upright post column body 3. Various types of structural ladders 33 are possible, for example, in one embodiment, the ladder 33 includes: connecting the main bar 32 and the plurality of cross bars 31; each cross bar 31 is arranged on the connecting main rod 32 at intervals; the cross bars 31 are staggered in pairs on both sides of the connecting main bar 32. The two ends of the connecting main rod 32 are respectively connected with the vertical rod cylinder 3 through common connecting pieces such as hoops. The operator can climb up the pole using the cross bar 31. The ladder 33 having this structure can reduce the overall weight and is advantageous in reducing the overall volume.

In order to facilitate maintenance and placement of the connecting line, a maintenance feeder line port 5 is formed in the lower portion of the upright post column 3 close to the ground. In a specific embodiment, the upper cover of the overhaul feeder port 5 is provided with an opening and closing cover door, which is convenient for locking and opening, and protects the circuit in the upright post column 3 from being stolen.

The pole body 3 is connected to the mounting base 36 via a base 6.

Examples

The whole pole tower is 9 m high, the bottom section is regular octagon, the steel tower is three layers, 4 antennas, 4 RRUs and 2 POIs can be mounted.

Technical requirements of the upright post column 3):

(1) the size is in mm and the elevation is in meters;

(2) the cross section of the steel pole tower body is regular octagon, and the connection adopts a splicing mode;

(3) the upright post column 3) adopts Q345 section steel, the auxiliary material adopts Q235 section steel, and the welding rod is E43;

(4) the 9 m pole is three layers, each

layer

1 and 2 above is provided with 1 antenna and 1 RRU device; the lowest layer is provided with 2 combiner POI devices.

(5) The rod body is provided with a lightning rod 1) lead flat iron, and the lead flat iron is led to the pedal to be connected with the grounding bar and integrated into the grounding grid.

Technical parameters of the installation foundation 36 require:

(1) the foundation diagram is suitable for pole tower is embraced in 9 meters field level communication

(2) The base form of the figure is an independent base, and the whole cross section of the base falls into a bearing layer with a bearing capacity characteristic value of fak and 130kpa to be more than 300mm

(3) The dimension is expressed in millimeters and meters, and the engineering is 0.000 of the soil on the top surface of the foundation. The outdoor ground design elevation is detailed line or station yard design drawing, and the ground water level is below 1m of the ground.

(4) After the foundation pit is dug, the foundation pit is compacted and leveled, the cushion layer concrete is poured, and after the concrete is hardened, the steel bars are bound and the foundation is placed

(5) Framework casting foundation concrete C30, concrete protective layer thickness foundation short column 30mm, foundation 40mm

(6) The reinforcing bars in the foundation are used as a part of the grounding device, the reinforcing bars must be welded firmly, and the reinforcing bars are welded with the lower layer horizontal reinforcing bar net

(7) The welding 6 of the main connecting beam reinforcement and the inner vertical reinforcement of the foundation and the foundation framework is adjusted according to the actual condition of the site.

The tower and the mounting base 36) are detachably connected by anchor bolts. The technical requirements of the used foundation bolts are as follows:

(1) the foundation bolt is used for a communication pole-holding tower of a 9-meter lawn station.

(2) Each foundation tower bolt 8 pieces is provided with a gasket and three nuts

(3) Screw flight tolerance of 8g, mechanical properties reference GB/T799; the tolerance grade of the nut and the thread is 7H standard GB/T41 performance grade is 8 grade.

(4) Zinc-plated mark GB/T13912 for bolt, nut and gasket

(5) The positioning plate is required to be flat and spliced, and the gasket material Q235-B of the positioning plate

(6) The water draining holes should be left in the foundation construction. The upper locating plate should be removed after the foundation is finished.

In this embodiment, the technical parameters of the obtained pole tower are shown in the following table:

TABLE 1 technical parameter list

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The application provides an application of a holding pole in the construction of Shanghai Kun high-speed rail public networks. At present, in the construction of high-speed rail, 3 pole towers are constructed on the field level, so that the installation of 6 systems of three operators can be met, and 12 antennae can be installed in total. The structural holding pole can meet railway safety requirements, and can fully utilize the tunnel portal field apron 37) area to realize the installation and use of the holding pole.

By 10 months of 2022, the mileage of the high-speed rail public network built by the Yunnan iron tower is near 2000 km, the mileage of the tunnel is near 1400 km, the number of tunnel openings is near 1200, 1200 field-level stations are built, and compared with the single tower with the lowest 18 meters, in the standard tower type of the current iron tower construction, the construction cost of each field-level station is reduced by 6 ten thousand yuan, and the overall cost is saved by 7200 ten thousand yuan.

1. The pole holding tower has the advantages of simple structure, low manufacturing cost and easy popularization;

2. the pole holding tower can standardize the construction of the base station of the high-speed railway tunnel portal, is a supplement to the current standardized tower type of the iron tower, is convenient for the construction work of the subsequent railway tunnel base station, and further increases the construction requirement along with the development of the high-speed railway.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a railway tunnel mouth field is communication basic station pole-holding tower for level ground which characterized in that includes: the antenna comprises a vertical pole column body (3), an antenna mounting support arm (21), a communication antenna, RRU equipment, a mounting foundation (36) and a tunnel portal field apron (37);

the installation foundation (36) is arranged on the tunnel portal field level (37); the tunnel portal field plateau (37) is arranged at the railway tunnel portal; the upright post column body (3) is vertically arranged on the installation foundation (36);

at least one antenna mounting support arm (21) is arranged at the upper part of the upright post column body (3);

the communication antenna and the RRU equipment are arranged on the antenna mounting support arm (21);

the upper part of the upright post column body (3) is provided with a mounting equipment bracket (4), and the mounting equipment is arranged on the mounting equipment bracket (4).

2. The communication base station derrick for a railway tunnel portal site according to claim 1, wherein the height of the derrick is 6-12 m; the external diameter of the vertical pole column body (3) is 200 mm-250 mm.

3. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: a distribution box (34) and an optical cross box (35); the distribution box (34) is electrically connected with the communication antenna and the mounting equipment bracket (4) respectively; the distribution box (34) is arranged on the tunnel portal field apron (37); the optical cross box (35) is respectively and optically connected with the RRU equipment and the mounting equipment; the light traffic box (35) is arranged on the tunnel portal field level (37).

4. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: a ladder (33); the crawling ladder (33) is arranged on one side of the vertical rod column body (3); the crawling ladder (33) comprises: connecting the main rod (32) and the plurality of cross rods (31); two ends of the connecting main rod (32) are respectively connected with the vertical rod column body (3);

each cross rod (31) is arranged on the connecting main rod (32) at intervals;

the cross bars (31) are arranged on two sides of the connecting main rod (32) in a staggered manner in pairs.

5. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: an equipment mounting bracket; the equipment mounting bracket is arranged in the middle of the vertical rod column body (3); the mounting equipment bracket (4) is arranged on the equipment mounting bracket.

6. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: a lightning rod (1); the top of the vertical pole column body (3) is provided with a lightning rod (1).

7. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: a maintenance feeder line port (5); the overhaul feeder line port (5) is arranged on the vertical rod column body (3) close to the ground.

8. The communications base station derrick for a railway tunnel entrance field floor of claim 1, comprising: a base (6); the upright post column body (3) is fixedly connected with the installation foundation (36) through the base (6).