Ordinary track rail riding device for inclined shaft (lane) in coal mine
Selection design

(references)

Jinzhou Dake Mining Machinery Manufacturing Co., Ltd.
October 2021

content

1. Structural principle and technical parameters of ordinary rail and rail-riding device for inclined shafts (lanes) in coal mines.....................................................................1
2. Calculation of the traction force of the train...............................................................................................................................................4
3. Selection and design of rails, rail clips and turnouts..........................................................................................................................4
4. Special parking lot for installation and commissioning........................................................................................................................................7
5. Technical requirements for track laying...........................................................................................................................................7
6. Product safety standard....................................................................................................................................................11

1. Structural principle and technical parameters of ordinary rail and rail-riding device for inclined shafts (lanes) in coal mines

1 Product Features

Ordinary track rail-riding device for inclined shaft (lane) in coal mine (hereinafter referred to as passenger device or passenger car) is a new ideal safety equipment for coal mines and mine transportation personnel. The passenger device has the function of rail-jamming, manual braking and overspeed protection braking, and the train has the function of linkage braking; its structure is simple, the mechanism is flexible, the rail-jam is reliable, the buffer is stable, the safety performance is good, the ride is comfortable, the mobility is strong, It has a wide range of applications, and effectively solves the problem of safe transportation of personnel in long-distance and large-slope undulating roadways in coal mines.

2 Main purpose and scope of use

The passenger device is suitable for ordinary rail system of 600mm (900mm) gauge of 30Kg and above; for the original passenger car using a rail of 30Kg/m or more, it does not need to be replaced, only the track connecting device can be modified to realize the rail running.

The passenger device can run on a single vehicle or in groups. According to the difference in lifting capacity, the number of trains in the train group is different, and the maximum number is not more than 3. The group passenger device is connected by tie rods and equipped with safety chains. .

4, the use of environmental conditions

a. The ambient temperature is -30℃～40℃.

b. It shall not be used for the return airway of the mining (pan) area and the mine return airway.

5 Technical parameters:

  The main performance parameters of the passenger device

Basic performance parameters

6 Structural features and working principle

train composition

Passenger device The train consists of three cars at most. The head car and the tail car have braking function. The passenger device with braking function connected to the hoisting wire rope hook in the train is the head car, and the belt at the other end of the train is The passenger device with braking function is the tail car, and the passenger device without braking function located in the middle of the train is the connecting car.

1 head car, 2 link cars 3 protection chain 4, tail car 5, connecting device

Schematic diagram of train set

When trains are linked with vehicles, hydraulic hoses are used to connect the control oil circuits of the front and rear vehicles to form a complete hydraulic system.

7. Introduction to basic functions

The passenger device train (hereinafter referred to as the train) runs on the ordinary track, clamps the rail and brakes, and completes the transportation of people safely and reliably. The passenger device has functions such as manual braking, rope breaking braking, overspeed braking on slopes, level road blocking, and electronic control with the hoist (emergency stop of the hoist after braking). When the train is running, the follower is located at the front of the running direction of the train, and observes the road conditions through the lookout window. In case of emergency, the follower informs the winch driver to stop the winch operation through the handheld device. If it is too late, the emergency braking can be implemented manually; When the hoisting wire rope breaks, the traction lever of the lead car (braking passenger car) can trigger the hydraulic system to implement emergency braking at the first time; when the sports car exceeds the speed limit value when the train is lowered, the speed limit protection device will act to implement the parking limit. When the brake device drops off the brake, the hydraulic system loses pressure and the pressure element acts, triggering the leakage communication system to block the operation of the hoist (the customer must be connected to the safety circuit of the hoist) to stop the operation of the hoist.

2. Calculation of the traction force of the train:

Traction force F = Qz X (sinα + μcosα + αmax/g)

Qz − total weight of the train, α − roadway inclination, μ wheel-track friction roller coefficient 0.02

αmax − Maximum acceleration during operation, take 0.5m/s², g − Gravity acceleration 9.8m/s²

Qz =(Qs+Ql+Qw)+75×total number of passengers

For example: a train with three sections, full load, and a slope of 25°, the calculation results are as follows:

The dead weight of the head car: 2480kg, the dead weight of the tail car: 2480Kg, the dead weight of the trailer: 1800kg, 15 people per car, 75kg per person

Substituting the above data can be calculated as:

F = 0.0098 × (2480 + 2480 +1800 + 75 × 15 × 3)(sia25° + 0.02cos25° + 0.5/9.8) = 0.0098×10135×0.49=48.74KN

After calculation: a train with three sections, full load, and a slope of 25° should be pulled by a JK-2X1.5 hoist.

Select the hoist model according to the calculated tractive force or select the number of rail-carrying trains according to the terminal load of the hoist.

3. Selection and design of rails, rail clips and turnouts:

1. Track: Because the braking method of the ordinary rail card rail passenger device is the upper and lower sides of the rail head, the lower brake blocks are braked on the lower sides of the rail head respectively. The selection of the track must be the same as that of the ordinary rail card. The design of the brake blocks of the rail-riding device is consistent with the design of the brake blocks. According to the provisions of Article 380 of the 2016 edition of the "Coal Mine Safety Regulations"; the main roadway track lines in the mining area shall use steel rails of not less than 30kg/m, and the cross-sectional dimensions of the rails shall meet the national standards. .

The section size is as follows:

2. Rail clamp: The rail connection adopts a special rail clamp that matches the rail type. The rail clamp is designed and produced by Jinzhou Dake Mining Machinery Manufacturing Co., Ltd., and the models are DKQGQ30, DKQGQ38, and DKQGQ43. Dimensions are as follows:

3. Turnout: Because the brake block and guide wheel of the rail passenger device are lower than the rail head, the turnout needs to use an interchange-type double-pendulum pneumatic special turnout. , the turnout is divided into two directions: left open and right open, manual and pneumatic control methods, the model is: ZDK6-30(38)(43)-5-25 right (left), that is, the narrow gauge single open 600mm gauge, Rail models 30, 38, 43kg/m, No. 5 turnout with a radius of curvature of 25m.

4. Special parking lot for installation and debugging

Because the braking method of the ordinary rail card rail passenger device is the upper and lower sides of the rail head, the lower brake pads are braked on the lower sides of the rail head respectively. For the moving block, in order to facilitate the installation, it is necessary to have a special installation yard for the rail-riding device, or make a 4-meter-long, 1.2-meter-wide and 1.2-meter deep pit under the track.

5. Technical requirements for track laying:

Warning: Due to the particularity of the braking method, the running track of the rail-carrying device must be of the same model and the cross-sectional size must meet the national standard

The rails are equipped with corresponding specifications of turnout devices.

1. According to the on-site measurement of the height and width of the roadway, verify whether it can meet the requirements of the space required for the transportation of the largest piece of the inclined shaft transportation system. In particular, attention should be paid to the space required by the vehicle when passing through various bends and partial openings. The space between the vehicle and the roadway shall meet the relevant requirements of the "Coal Mine Safety Regulations". The quality of track laying should reach the "excellent product" level in the "Quality Standard for Coal Mine Narrow Gauge Railway" (draft).

2. Before installing the track, the roadway should be cleaned first, the local unevenness of the track line should be leveled, and the sleepers should be laid directly on the solid floor. If the sleepers cannot be laid on the bottom plate, effective measures must be taken to cushion the sleepers to prevent the track from sinking when it is under heavy load. During the laying process, if there is a small corner, it can be spliced ​​and transitioned from a distance with a straight rail. The spliced ​​track corners should meet the requirements of the vertical turning radius Rmin=15m.

3. Before the track is installed, the center position of the track and the position of the turnout at the offset should be marked in the roadway. The straighter and flatter the track is installed, the better to avoid unnecessary corners.

4. When the track is installed, the turnout should be laid from the offset first. When the track length is not suitable, the straight track can be cut according to the specific required length, and the joint part can be re-welded to the corresponding position of the cut track. The open track should be flat.

5. When the track is laid, use a special rail clamp that matches the rail type to connect the two tracks. An anchor rod is required to fix the track splint at an interval of 20m. Can withstand the corresponding shear force, the anchoring depth depends on the lithology of the roadway floor, and the anchoring length is not less than 500mm; the installation diagram is as follows:

Schematic diagram of rail connection

6. Gauge tie rods should be installed in the track of the horizontal curve section, the minimum horizontal curvature radius is not less than 12m; the minimum vertical curvature radius of the vertical ramp section track is not less than 15m, the vertical angle of the connecting section between the two rail ends should not be greater than 3°, and the slope is greater than 20 When °, the minimum vertical curvature radius of the track in the vertical ramp section is not less than 20m.

The front and rear heights of the track rail should be visually smooth, and there should be no joints at the obvious slope change points. The arc transition should be adopted according to the bending radius of the roadway at the slope change point. The allowable deviation of the front and rear heights of the curved track should not exceed 5mm. The segment is visually smooth, with a chord of 2m, and the radius of 50m above does not exceed 2mm, and the radius below 50m does not exceed 3mm.

7. The protruding height of the track pressure plate and bolts (road studs) along the way shall not be less than 70mm lower than the top surface of the track;

The upper deviation of the gauge between the straight section and the widened curved section is +5mm, and the lower deviation is -2mm; , shall not be larger than 5mm; after the track is laid, clean up the materials on both sides of the track in time to ensure the safe passage of the rail device of the passenger vehicle, requiring a range of 200mm in the width direction on both sides of the center of the rail, and a range of 70mm in the height direction of the top surface of the rail No debris is allowed inside.

8. When installing the track, it should be ensured that the seam between the two tracks is not greater than 5mm, and the height and left and right errors are not greater than 2mm.

9. The special card track switch is controlled manually or by air pressure, and is used for the supporting application of the track system of the card track passenger device. The height of the top surface of the turnout and the top surface of the system track are kept the same height.

10. Cement foundation shall be laid at the installation place of turnout and fixed with anchor rod. The requirements for anchoring force are the same as Article 5.

Schematic diagram of track ramp changing slope, horizontal turning and turnout installation