CN206409240U - A kind of track traffic bored tunnel electric railcar transports corollary system - Google Patents

Abstract

The utility model relates to the technical field of subway construction, and provides an electric rail transport supporting system for rail transit underground excavation tunnels. It includes a steel frame, a belt conveyor, and a slag remover; a mine bucket truck can pass through the inside of the steel frame, one end of the steel frame is connected to the slag remover, and the bottom of the other end is equipped with a walking wheel, and the steel frame and the slag remover together form a walking mechanism; A belt conveyor is installed on the top of the frame; the track is used for the electric storage tractor and the mine bucket truck to travel, and there are multiple mine bucket trucks connected in sequence; the scraper conveyor is used for the transportation of the muck from the working face to the shaft. The beneficial effects of the utility model are: the system is located on one side of the tunnel, occupies a small area, and the laying of the track does not affect the passability. There is no need to meet cars, and the risk is low; the amount of single transportation, transportation speed, and running time have been significantly improved, and the efficiency has been greatly improved; the service life of the system has been increased; manual equipment has been reduced; strong applicability and broad application prospects.

Description

A supporting system for electric rail transportation in underground excavation tunnels for rail transit

technical field

The utility model relates to the technical field of subway construction, in particular to an electric rail transportation supporting system for rail transit underground excavation tunnels.

Background technique

At present, the length of subway underground excavation tunnels is mostly concentrated at about 1Km, and the materials required for construction and the muck generated by excavation need to be transported inside the tunnel. According to the investigation of the construction status of subway underground excavation tunnels, manual loading was adopted in the early construction and transportation system, and the manpower Wheeled vehicle transportation; at this stage, manual or small internal combustion excavators are mostly used for loading, and agricultural self-unloading internal combustion tricycles are transported; Beijing stipulated in 2015 that the use of internal combustion machinery construction in underground track engineering is prohibited, and manual loading and electric self-unloading are now mostly used Tricycle transport.

The transportation system in the tunnel of subway shield construction mostly adopts electric rail transportation, slag is loaded by shield screw conveyor, and slag is unloaded by gantry crane. The system has high requirements on the clearance size of the construction shaft and the area of the ground construction site.

Existing technology 1: underground excavation construction The existing transportation system: the project in Beijing is composed of manual loading + electric self-unloading tricycle + bridge crane; the project outside Beijing is composed of small internal combustion excavator loading + internal combustion self-unloading tricycle + bridge crane .

Disadvantages of prior art 1: In the project in Beijing, firstly, the efficiency of manual slag loading is low, the existing electric dump truck needs to be charged frequently, and there are many cases of power loss during use; secondly, the labor intensity of workers is high; thirdly, labor is occupied during operation ( driver) more. Projects outside Beijing: Exhaust gas generated during operation of internal combustion equipment seriously affects the health of workers.

Existing technology 2: The rail transportation system in the shield construction tunnel: consists of shield machine screw conveyor + light rail + battery tractor + mine bucket truck + gantry crane.

Disadvantages of the second prior art: the rail transportation system in the shield construction tunnel has the following deficiencies: first, the screw conveyor in the shield tunnel needs to provide the slag loading function; High, there must be a parking line behind the shaft so that the mine truck can be positioned at the center of the shaft. The clearance of the shaft needs to be large to facilitate the lifting of the mine truck. When used in the area, flexible use of land is required and the land occupation is relatively large.

Existing technology 3: rail transportation system in mining operation cave: composed of mining machine + belt conveyor, or mining machine + light rail + battery tractor + mine truck + unloading tower.

Disadvantages of the existing technology 3: the rail transportation system in the mining operation hole has the following deficiencies. First, it needs to be equipped with a mining machine to provide the slag loading function; The land use requirements are not flexible enough, the land occupation is difficult, and the dust is serious, so it is impossible to achieve fully enclosed operations.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, to provide an electric rail transport supporting system for rail transit underground excavation tunnels, which solves the problems of low transportation efficiency, long charging waiting time, high failure rate, Occupying a lot of labor, high labor intensity and improving the working air environment in the cave.

The utility model relates to an electric rail transportation supporting system for underground excavation tunnels of rail traffic, which includes rails, belt reloaders, electric storage tractors, mining bucket cars, and scraper conveyors;

The belt reloader is a loading platform, including a steel frame, a belt conveyor, and a slag remover; the inside of the steel frame is a hollow structure that can pass the mine bucket truck, and one end of the steel frame is connected to the slag remover , the bottom of the other end is provided with a walking wheel, and the steel frame and the slag scraper jointly form a walking mechanism; a belt conveyor is installed on the top of the steel frame; the earth is discharged to the belt conveyor through the slag scraper outlet On the belt, it is unloaded into the mine bucket car through the belt conveyor;

The track is used for the electric storage tractor to tow the mine bucket trucks, and there are multiple mine bucket trucks connected in sequence;

The scraper conveyor is used for transporting muck from the working face to the shaft.

Further, the steel frame is formed by welded or bolted section steels, manufactured on site or manufactured in a factory, and assembled on site.

Further, the hopper of the ore bucket truck turns over and discharges to the scraper conveyor, and the scraper conveyor scrapes the muck into the shaft; the scraper conveyor is a chain scraper conveyor.

Further, the model of the electric storage tractor is CY5/6GB.

Further, the number of mine bucket cars is 4, and the volume of a single mine bucket car is 1.5m ³ .

Further, the track is a light track, and double track switches are used to change the driving route.

Further, the light track adopts double-track laying of 15# light steel rails and channel steel sleepers.

Further, the track is a heavy track, a monorail transport track or a suspension track.

The beneficial effects of the utility model are: the track transportation system is located on one side of the tunnel, occupies a small area, and the laying of the track does not affect any passability. There is no need for meeting cars, which reduces the risk; the amount of single transportation, transportation speed, and running time are significantly improved, and the efficiency is greatly improved; the service life of the system is increased; manual equipment is reduced; the applicability is strong, and the application prospect is broad.

Description of drawings

Fig. 1 is a schematic structural diagram of an electric rail transportation supporting system for a rail transit underground excavation tunnel according to an embodiment of the utility model.

Figure 2 is a schematic diagram of the relationship between the scraper conveyor and the track position.

Figure 3 shows a schematic diagram of the structure of the scraper conveyor.

Among them: 1-mine bucket truck, 2-steel frame, 3-belt conveyor, 4, slag removal machine, 5 track, 6-belt transfer machine walking wheel, 7-electric storage tractor, 11-scraper conveyor, 12-drive chain, 13-scraper, 14-motor and reducer.

detailed description

Specific embodiments of the present utility model will be described in detail below in conjunction with specific drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects. In the drawings of the following embodiments, the same reference numerals appearing in each drawing represent the same features or components, which can be applied in different embodiments.

As shown in Figure 1, the embodiment of the utility model is an electric rail transportation supporting system for a rail transit underground excavation tunnel, including a track 5, a belt reloader, an electric storage tractor 7, a mine bucket car 1, and a scraper conveyor 11 ; Electric storage tractor 7 is the driving power part of the vehicle group of the system; mine bucket truck 1 is the material carrying part of the system.

The belt reloading machine is a loading platform (because the section of the tunnel is generally small, and the mine bucket car group is long, so the belt reloading machine needs to be overhead and sequentially feed the mine bucket car 1), including steel frame 2, belt Conveyor 3, slag remover 4; the inside of the steel frame 2 is a hollow structure that can pass the mine bucket car 1, one end of the steel frame 2 is connected to the slag remover 4, and the bottom of the other end is provided with a walking wheel 6 , the steel frame 2 and the slag remover 4 jointly form a walkable mechanism; the top of the steel frame 2 is equipped with a belt conveyor 3; The belt conveyor 3 is unloaded into the mine bucket car 1;

The track 5 is used for the electric storage type tractor 7 to pull the mine bucket truck 1 forward, and there are multiple mine bucket trucks 1 connected in sequence;

As shown in Figures 2 and 3, the scraper conveyor 11 is used for the transportation of muck from the working face to the shaft, including a transmission chain 12, a scraper 13, a motor and a reducer 14; the motor and the reducer 14 are located at One end of the track 5 provides power for the scraper conveyor 11, and the transmission chain 12 drives the scraper 13 to transport muck; Determine; the function of the scraper conveyor: after the mine bucket truck 1 is in place, its hopper turns over and unloads on the scraper conveyor, and the scraper conveyor scrapes the muck into the shaft; preferably Yes, the scraper conveyor is a chain scraper conveyor with a length of 10-12m.

The steel frame 2 is welded or bolted by section steel, and is fabricated on-site or factory-made and assembled on-site.

Preferably, the model of the electric storage tractor 7 is CY5/6GB, which is the driving power part of the system vehicle group.

Preferably, the number of mine bucket trucks 1 is four, and the volume of a single mine bucket truck 1 is 1.5m ³ .

The track 5 is preferably a light track, which adopts double track switches to change the driving route; it is used for driving the electric storage tractor 7 and the mine bucket car 1; Described track 5 also can select heavy-duty track, monorail transport track or suspension track as the alternative of light-duty track.

Safety analysis of the present utility model:

The rail transportation system is on the side of the tunnel, occupying a small area, and the laying of track 5 does not affect any passability; there is no need for passing cars, which reduces the risk. The brake adopts the mechanical brake mode, and the double-track switch is used to change the driving route. It does not need to turn around, and can drive forward and backward; the traditional tricycle is relatively heavy, the inertia is relatively large, the braking quality cannot keep up, and the road conditions in the cave are poor. It is easy to blow out the tire, resulting in a greatly increased risk. Steering is heavy, making it easy to hit walls in corners. The site in the cave is narrow and long, making it inconvenient to turn around and drive. The process of dumping soil requires reversing to the shaft. If the safety protection is not in place, it is extremely dangerous for the driver to fall into the shaft when the tricycle falls into the shaft.

Economic analysis of the utility model:

1) Improvement of single transportation volume: Rail transportation uses mining bucket truck 1 to load soil, equipped with four mining bucket trucks 1, each with a volume of 1.5m³, and each time 6m³. The volume of traditional tricycle is 1.05m³.

2) Improvement of speed and running time: the speed of rail transportation is 11.4km/h. According to statistics, it can drive about 200 meters per minute and work continuously for more than 6 hours; the speed of traditional tricycle is 10km/h. In this bidding section, the distance is long and there is a slope of 2.85‰, and the battery running time of the tricycle is about 1 hour (the power consumption of going uphill with a full load is relatively large). It takes about 2 hours for the three electric tricycles to be transported non-stop during normal excavation. Therefore, if the traditional tricycles want to meet the construction needs, they must purchase a large number of electric tricycles, resulting in a waste of funds.

3) Increased service life and reduced capital investment: Traditional electric tricycles are generally scrapped after about 6 months of use. The battery of the rail transportation system can generally be guaranteed to be used normally for 2 years, and the service life of the electric storage tractor 7 is more than 5 years.

4) Reduction of manpower: the traditional tricycle transportation method requires three drivers to transport soil for one working surface; the rail transportation system only needs one person to complete the transportation task and can satisfy the simultaneous transportation of two working surfaces, that is to say, 6 workers in the past The work done by 6 tricycles can now be done by one person. Driving is safe and convenient, easy and simple. The labor intensity is greatly reduced, and the space occupied by multiple tricycles for charging is saved.

The beneficial effects of the utility model are: the track transportation system is located on one side of the tunnel, occupies a small area, and the laying of the track does not affect any passability. There is no need for meeting cars, which reduces the risk; the amount of single transportation, transportation speed, and running time are significantly improved, and the efficiency is greatly improved; the service life of the system is increased; manual equipment is reduced; the applicability is strong, and the application prospect is broad.

Although several embodiments of the present invention have been given herein, those skilled in the art should understand that the embodiments herein can be changed without departing from the spirit of the present invention. The above-mentioned embodiments are only exemplary, and the embodiments herein should not be taken as limiting the scope of rights of the present utility model.

Claims (8)

1. An electric rail transport supporting system for rail transit underground excavation tunnels, characterized in that it includes tracks, belt loaders, electric storage tractors, mine bucket cars, and scraper conveyors; The belt reloader is a loading platform, including a steel frame, a belt conveyor, and a slag remover; the inside of the steel frame is a hollow structure that can pass the mine bucket truck, and one end of the steel frame is connected to the slag remover , the bottom of the other end is provided with a walking wheel, and the steel frame and the slag scraper jointly form a walking mechanism; a belt conveyor is installed on the top of the steel frame; the earth is discharged to the belt conveyor through the slag scraper outlet On the belt, it is unloaded into the mine bucket car through the belt conveyor; The track is used for the electric storage tractor to tow the mine bucket trucks, and there are multiple mine bucket trucks connected in sequence; The scraper conveyor is used for transporting muck from the working face to the shaft. 2. The electric rail transportation supporting system for rail transit underground excavation tunnels according to claim 1, characterized in that the steel frame is welded or bolted by section steel, manufactured on site or manufactured in a factory, and assembled on site. 3. The electric rail transportation supporting system for rail transit underground excavation tunnels as claimed in claim 1, characterized in that, the hopper of the mine bucket car is turned over and discharged onto the scraper conveyor, and the scraper conveyor The muck is scraped into the shaft; the scraper conveyor is a chain scraper conveyor. 4. The supporting system for rail transit tunnel electric rail transportation according to claim 1, characterized in that the model of the electric storage tractor is CY5/6GB. 5 . The supporting system for electric rail transportation of underground excavation tunnels for rail transit according to claim 1 , wherein the number of said mining bucket cars is 4, and the volume of a single said mining bucket truck is 1.5m ³ . 6. The rail transit underground excavation tunnel electric rail transport supporting system according to any one of claims 1-5, wherein the track is a light track, and double track switches are used to change the driving route. 7. The rail transit underground excavation tunnel electric rail transportation supporting system as claimed in claim 6, characterized in that, the light rail adopts 15# light-weight steel rail double-track laying, and channel steel sleepers. 8. The rail transit underground excavation tunnel electric rail transport supporting system according to any one of claims 1-5, wherein the track is a heavy-duty track, a monorail transport track or a suspension track.