Variable gradient overhead monorail shuttle car and transportation method for underground coal mine

Abstract

The present application belongs to the technical field of coal mine underground trackless rubber-tyred vehicle transportation, and particularly relates to a variable-gradient overhead trolley rack transfer car for coal mine underground use and a transportation method. The overhead trolley rack transfer car comprises an upper car body and a lower car body, the lower car body is used for connecting a traction mechanism, the upper car body is used for carrying the vehicle, the upper car body and the lower car body are connected through an inclination angle adjusting mechanism, the inclination angle adjusting mechanism can adjust the included angle between the upper car body and the lower car body to adapt to different transfer requirements; the upper car body can be adjusted between a horizontal state and an inclination angle state, in the horizontal state, light vehicles and medium vehicles are transferred; in the inclination angle state, special vehicles (support carrier vehicles) are transferred, which can effectively reduce the amount of roadway engineering; the transportation safety risk and the safety risk brought by high roadway engineering are effectively reduced; the transportation method adopts a gravity traction system, the gravity potential energy of a counterweight is used to provide a traction force, the driving gear system and the trolley rack bear a smaller force when climbing, and the waste of energy during the transfer process is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of trackless rubber-tyred vehicle transportation in coal mine, and particularly relates to a variable-gradient overhead rail rack transfer car for use in coal mine and a transportation method. BACKGROUND

[0002] Due to high mobility and high efficiency, the explosion-proof trackless rubber-tyred vehicle is widely used in coal mine. Some coal mines have large slopes (gradient greater than 7°), and it is difficult for the trackless rubber-tyred vehicle to safely and reliably travel on the large slope. At present, a traction device (such as a winch) is arranged at the top of the slope to solve the large-gradient transfer problem of the trackless rubber-tyred vehicle by pulling the transfer car, for example, the transfer transportation method of the large-gradient trackless rubber-tyred vehicle in coal mine disclosed in CN111942411B.

[0003] At present, the large-gradient transfer transportation method of the trackless rubber-tyred vehicle in coal mine is divided into two categories: as shown in FIG. Figure 2 One is a right-angled triangular transfer car transportation method; the upper end surface of the transfer car is a horizontal plane, and the up-and-down transfer of the rubber-tyred vehicle is equivalent to traveling on a horizontal road, which is relatively convenient; the vehicle is parked in a horizontal state, without the risk of sliding down, and is safe; the disadvantage is that the height of the roadway is required to be relatively high, the construction cost is high, and there are roof falling and rib spalling safety hazards. The second is a non-variable-angle transfer transportation method, which has a lower requirement for the height of the roadway, but the slope of the upper end surface of the transfer car is large, the transfer process is low in efficiency, and the safety risk is the highest. SUMMARY

[0004] The purpose of the present application is to integrate the advantages of the right-angled triangular transfer car transportation method and the non-variable-angle transfer transportation method, and to propose a transfer transportation method that can adjust the gradient according to the needs.

[0005] The present application provides the following technical solution: a variable-gradient overhead rail rack transfer car for use in coal mine, comprising an overhead rail rack transfer car, the overhead rail rack transfer car comprising an upper car body and a lower car body, the lower car body being used to connect a traction mechanism, and the upper car body being used to carry a vehicle, the upper car body and the lower car body being connected through an inclination angle adjusting mechanism, the inclination angle adjusting mechanism being capable of adjusting the included angle between the upper car body and the lower car body to adapt to different transfer needs.

[0006] Further, the working state of the overhead rail rack transfer car is that the car head faces the slope top of the slope, the inclination angle adjusting mechanism comprises a hinged structure and an adjustable support, the car head, the upper car body and the lower car body of the overhead rail rack transfer car are connected through the hinged structure, and the tail, the upper car body and the lower car body of the overhead rail rack transfer car are connected through the adjustable support.

[0007] Further, the adjustable support comprises an upper connecting frame, a lower connecting frame and a lifting oil cylinder; the upper connecting frame is hinged to the upper vehicle body, the lower connecting frame is hinged to the lower vehicle body, the upper connecting frame and the lower connecting frame are hinged to each other, one end of the lifting oil cylinder is connected to the hinge shaft of the upper connecting frame and the lower connecting frame, and the other end is hinged to the lower vehicle body.

[0008] Further, a limiting part is arranged on the lower vehicle body on the other side of the lifting oil cylinder, and the lower connecting frame can form rigid support against the limiting part after the upper connecting frame and the lower connecting frame rotate beyond the dead point.

[0009] Further, the lower vehicle body is arranged with a load bearing wheel and a driving gear system, the load bearing wheel and the driving gear system are staggered, the driving gear system can be engaged with the toothed rail on the ramp, and the load bearing wheel can be in rolling contact with the load bearing rail on the ramp.

[0010] Further, the upper vehicle body comprises a carrying flat plate, side fenders are arranged on both sides of the parking area of the carrying flat plate, and a car stopping plate driven to flip by a car stopping cylinder is hinged to the carrying flat plate.

[0011] A transportation method adopts the overhead rack and pinion transfer car, a gravity traction system is arranged at the top of the ramp, and the overhead rack and pinion transfer car is connected with the counterweight in the gravity traction system; when the overhead rack and pinion transfer car goes up, the counterweight in the gravity traction system is lowered to provide traction, and when the overhead rack and pinion transfer car goes down, the counterweight in the gravity traction system is pulled to store energy.

[0012] Further, the bottom of the ramp is connected with a bottom straight lane, the front of the bottom straight lane is a buffer lane, the bottom straight lane is connected with a bottom parallel lane after turning, and the bottom parallel lane is divided into a bottom down lane and a bottom up lane.

[0013] The top of the ramp is connected with a top parallel lane, and the top parallel lane is divided into a top down lane and a top up lane.

[0014] Further, the gravity traction system comprises a movable pulley block, a fixed pulley block, a counterweight and a steel wire rope; a deep pit is arranged at the top of the ramp, the counterweight is located in the deep pit, one end of the steel wire rope is fixed on a cantilever at the top of the deep pit, the other end of the steel wire rope passes through the movable pulley block on the counterweight and then reverses through the fixed pulley block to be connected with the overhead rack and pinion transfer car.

[0015] Compared with the prior art, the advantages of the present application are that:

[0016] The variable gradient overhead monorail rack crossover vehicle for underground coal mine provided by the application comprises an upper vehicle body and a lower vehicle body, and the carrying plate of the upper vehicle body can be adjusted between a horizontal state and an inclined state; the crossover vehicle is used for crossing light vehicles and medium vehicles in the horizontal state, and the comfort of the passengers is high; the crossover vehicle is used for crossing special vehicles (support carrier) in the inclined state, and the roadway engineering quantity can be effectively reduced; the safety risk of transportation and the safety risk caused by high roadway engineering are effectively reduced; the transportation method adopts a gravity traction system, the gravity potential energy of the counterweight block is used to provide traction force, the stress of the driving gear system and the rack is small when climbing, and the waste of energy during the crossover process is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Figure 1 is a use schematic diagram of the overhead monorail rack crossover vehicle;

[0018] Figure 2 Figure 2 is a comparison diagram of the variable angle crossover vehicle, the right-angled triangular crossover vehicle and the overhead monorail rack crossover vehicle;

[0019] Figure 3 Figure 3 is a comparison diagram of the horizontal state and the inclined state of the overhead monorail rack crossover vehicle;

[0020] Figure 4 Figure 4 is a schematic diagram of the gravity traction system;

[0021] Figure 5 Figure 5 is a schematic diagram of the horizontal state of the overhead monorail rack crossover vehicle;

[0022] Figure 6 Figure 6 is a schematic diagram of the inclined state of the overhead monorail rack crossover vehicle;

[0023] Figure 7 Figure 7 is a schematic diagram of the bearing rail and the rack on the slope.

[0024] In the figure, 1 is a slope, 2 is a gravity traction system, 21 is a fixed pulley block, 22 is a steel wire rope, 23 is a movable pulley block, 24 is a counterweight block, 3 is an overhead monorail rack crossover vehicle, 31 is an upper vehicle body, 311 is a carrying plate, 312 is a vehicle stopping plate, 313 is a vehicle stopping cylinder, 314 is a side baffle, 32 is a lower vehicle body, 33 is a bearing wheel, 34 is a driving gear system, 35 is an upper connecting frame, 36 is a lower connecting frame, 37 is a lifting cylinder, 38 is a limiting part, 4 is a slope bottom straight road, 5 is a buffer lane, 6 is a slope bottom parallel lane, 61 is a slope bottom downward lane, 62 is a slope bottom upward lane, 7 is a slope top parallel lane, 71 is a slope top downward lane, 72 is a slope top upward lane, 8 is a first signal lamp, 9 is a second signal lamp, 10 is a special vehicle, 11 is a light vehicle, 12 is a variable angle crossover vehicle, 13 is a right-angled triangular crossover vehicle, 14 is a bearing rail, and 15 is a rack. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0026] Embodiment 1

[0027] As shown in Figure 5 , Figure 6 : a variable gradient overhead line rack crossover vehicle for underground coal mine, the overhead line rack crossover vehicle 3 comprises an upper vehicle body 31 and a lower vehicle body 32, the lower vehicle body 32 is used for connecting a traction mechanism, the upper vehicle body 31 is used for carrying the vehicle, the upper vehicle body 31 and the lower vehicle body 32 are connected through an inclination angle adjusting mechanism, and the inclination angle adjusting mechanism can adjust the included angle between the upper vehicle body 31 and the lower vehicle body 32 to adapt to different crossover requirements.

[0028] The working state of the overhead line rack crossover vehicle 3 is that the vehicle head faces the slope top of the slope 1, the inclination angle adjusting mechanism comprises a hinged structure and an adjustable support, the upper vehicle body 31 and the lower vehicle body 32 at the vehicle head of the overhead line rack crossover vehicle 3 are connected through the hinged structure, and the upper vehicle body 31 and the lower vehicle body 32 at the vehicle tail of the overhead line rack crossover vehicle 3 are connected through the adjustable support.

[0029] The adjustable support comprises an upper connecting frame 35, a lower connecting frame 36 and a lifting oil cylinder 37, the upper connecting frame 35 is hinged to the upper vehicle body 31, the lower connecting frame 36 is hinged to the lower vehicle body 32, the upper connecting frame 35 and the lower connecting frame 36 are hinged to each other, one end of the lifting oil cylinder 37 is connected to the hinged shafts of the upper connecting frame 35 and the lower connecting frame 36, and the other end of the lifting oil cylinder 37 is hinged to the lower vehicle body 32; when the lifting oil cylinder 37 is extended, the upper vehicle body 31 is in a horizontal state, and when the lifting oil cylinder 37 is retracted, the upper vehicle body 31 is in an inclination angle state. The adjustable support drives the upper vehicle body 31 to adjust between the horizontal state and the inclination angle state, and the inclination angle of the inclination angle state is about 7°, so as to ensure that the rubber-tyred vehicle is stably and reliably stopped on the upper vehicle body 31.

[0030] The lower vehicle body 32 is provided with a limiting portion 38 on the other side of the lifting oil cylinder 37, and the lower connecting frame 36 can form a rigid support by abutting against the limiting portion 38 after the lower connecting frame 36 rotates beyond the dead point; at this time, the lifting oil cylinder 37 is not stressed, and the risk of pressure relief of the lifting oil cylinder 37 is avoided.

[0031] As shown in Figure 7As shown: the lower body 32 is arranged with load wheels 33 and drive gear system 34, the load wheels 33 and drive gear system 34 are staggered, the drive gear system 34 can be engaged with the rack rail 15 on the ramp 1, for providing driving force, and has the function of rail hugging, ensuring the adhesion of the overhead rack rail crossover vehicle 3 on a large slope, and preventing the overhead rack rail crossover vehicle 3 from derailing; the load wheels 33 can be in rolling contact with the load rail 14 on the ramp 1, the load wheels 33 are steel wheels, mainly bearing the gravity of the overhead rack rail crossover vehicle 3.

[0032] The upper body 31 includes a carrying flat plate 311, the surface of the carrying flat plate 311 is treated to prevent slipping, side baffles 314 are arranged on both sides of the parking area of the carrying flat plate 311, to ensure that the vehicle does not escape from the side during the crossover process, and a stop plate 312 driven by a stopper oil cylinder 313 to turn over is hinged on the carrying flat plate 311; the stop plate 312 has two states of standing up and lying flat, when the stop plate 312 stands up, it prevents the vehicle from sliding down. The stop plate 312 stands up and leans against the carrying flat plate 311 to form mechanical limiting, ensuring the safety of stopping the vehicle under various working conditions.

[0033] As shown in the figure: Figure 3 The coal mine rubber-tyred vehicle is mainly divided into three categories: light vehicles 11, medium vehicles, and special vehicles 10. The light vehicles 11 and medium vehicles are production vehicles for coal mines, usually having the characteristics of small overall size and frequent transportation, while the special vehicles 10 are mainly used for coal mine moving and face turning, usually having an overall size 50% larger than that of the light vehicles 11 and medium vehicles, and the transportation time is relatively concentrated, about 10-15 days a year. The carrying flat plate 311 of the upper body 31 can be adjusted between the horizontal state and the inclined state, in the horizontal state, the light vehicles 11 and medium vehicles are crossed, and the personnel on the vehicle have high comfort; in the inclined state, the special vehicles 10 (support carrier) are crossed, which can effectively reduce the amount of roadway engineering.

[0034] The inclined crossover of the special vehicles 10 greatly reduces the requirement for the height of the roadway, avoids the large amount of roadway engineering, and the risk of roof falling and rib spalling. When the special vehicles 10 are crossed, the overhead rack rail crossover vehicle 3 is adjusted to the horizontal state when moving to the top and bottom of the slope, to facilitate the special vehicles 10 to get on and off the vehicle.

[0035] Example 2

[0036] As shown in the figure: Figure 1As shown: a transport method, using the overhead rack and pinion shuttle 3 of Example 1; a gravity traction system 2 is set at the top of the ramp 1, the overhead rack and pinion shuttle 3 is connected with the counterweight 24 of the gravity traction system 2; when the overhead rack and pinion shuttle 3 goes up, the counterweight 24 in the gravity traction system goes down to provide traction, when the overhead rack and pinion shuttle 3 goes down, the counterweight 24 in the gravity traction system 2 is pulled up to store energy. The gravity traction system 2 provides fixed traction for the shuttle, reduces the stress on the drive gear system 34 of the overhead rack and pinion shuttle 3 and the rack rail 15 when climbing, and avoids waste of energy during the shuttle process.

[0037] As shown: Figure 4 The gravity traction system 2 includes a movable pulley block 23, a fixed pulley block 21, a counterweight 24 and a steel wire rope 22; a deep pit is set at the top of the ramp 1, the counterweight 24 is located in the deep pit, one end of the steel wire rope 22 is fixed on the cantilever at the top of the deep pit, and the other end is connected with the overhead rack and pinion shuttle 3 after passing through the movable pulley block 23 on the counterweight 24 and reversing through the fixed pulley block 21. There are 5 steel wire ropes 22, which are designed for multiple redundancy to ensure the safety of traction.

[0038] The gravity of the counterweight 24 is about twice the total downward force of the medium-sized vehicle and the overhead rack and pinion shuttle 3, the stroke of the counterweight 24 is half of the overhead rack and pinion shuttle 3 by increasing the movable pulley block 23, and correspondingly, the weight of the counterweight 24 is doubled. When the medium-sized vehicle is shuttled, the drive gear system 34 of the overhead rack and pinion shuttle 3 and the rack rail 15 are basically not provided with traction; when the light vehicle is shuttled, the drive gear system 34 of the overhead rack and pinion shuttle 3 and the rack rail 15 mesh to generate downward force; when the heavy vehicle is shuttled, the drive gear system 34 of the overhead rack and pinion shuttle 3 and the rack rail 15 mesh to generate upward force.

[0039] As shown: Figure 1 The bottom of the ramp 1 is connected with the slope straight road 4, the slope straight road 4 is connected with the slope parallel road 6 after turning, the slope parallel road 6 is divided into two branches of the slope downward road 61 and the slope upward road 62; the buffer road 5 is composed of scattered stones and is paved half a meter deep, mainly to prevent the overhead rack and pinion shuttle 3 and the vehicle from rushing down from the ramp 1 after losing control, the vehicle still rushes forward due to inertia, and the resistance of the buffer road 5 promotes the parking of the out-of-control vehicle to avoid serious consequences. The slope straight road 4 and the slope parallel road 6 are at a 90-degree angle to ensure that the waiting vehicles are not affected when losing control.

[0040] The slope top of the ramp 1 is connected with a slope top parallel lane 7, which is divided into a slope top down lane 71 and a slope top up lane 72. A first signal lamp 8 is arranged at the slope bottom straight lane 4, and a second signal lamp 9 is arranged at the slope top parallel lane 7; the first signal lamp 8 and the second signal lamp 9 are used for indicating that the vehicle is allowed to pass or to stop and wait.

[0041] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transportation method, characterized in that: The overhead wire rack rail shuttle car (3) and gravity traction system (2) are adopted. The overhead wire rack rail shuttle car (3) includes an upper body (31) and a lower body (32). The lower body (32) is used to connect the traction mechanism, and the upper body (31) is used to carry the vehicle. The upper body (31) and the lower body (32) are connected by an angle adjustment mechanism. The angle adjustment mechanism can adjust the angle between the upper body (31) and the lower body (32) to adapt to different shuttle needs. A gravity traction system (2) is installed at the top of the slope (1). The overhead wire rack shuttle car (3) is connected to the counterweight (24) in the gravity traction system (2). When the overhead wire rack shuttle car (3) goes up, the counterweight (24) in the gravity traction system (2) descends to provide traction force. When the overhead wire rack shuttle car (3) goes down, it pulls the counterweight (24) in the gravity traction system (2) to lift and store energy. The gravity traction system (2) includes a movable pulley block (23), a fixed pulley block (21), a counterweight block (24), and a steel wire rope (22). A deep pit is set at the top of the ramp (1), the counterweight block (24) is located in the deep pit, one end of the steel wire rope (22) is fixed on the cantilever at the top of the deep pit, and the other end passes around the movable pulley block (23) located on the counterweight block (24) and then changes direction through the fixed pulley block (21) to connect with the overhead wire rack shuttle car (3).

2. The transportation method according to claim 1, characterized in that: The working state of the overhead wire rack shuttle car (3) is that the front of the car faces the top of the slope (1). The tilt adjustment mechanism includes a hinge structure and an adjustable support. The front of the overhead wire rack shuttle car (3), the upper body (31) and the lower body (32) are connected by the hinge structure. The rear of the overhead wire rack shuttle car (3), the upper body (31) and the lower body (32) are connected by the adjustable support.

3. The transportation method according to claim 2, characterized in that: The adjustable support includes an upper connecting frame (35), a lower connecting frame (36), and a lifting cylinder (37); the upper connecting frame (35) is hinged to the upper body (31), the lower connecting frame (36) is hinged to the lower body (32), the upper connecting frame (35) and the lower connecting frame (36) are hinged together, one end of the lifting cylinder (37) is connected to the hinge axis of the upper connecting frame (35) and the lower connecting frame (36), and the other end is hinged to the lower body (32).

4. The transportation method according to claim 3, characterized in that: On the lower vehicle body (32), a limiting part (38) is provided on the other side of the lifting cylinder (37). After the upper connecting frame (35) and the lower connecting frame (36) rotate past the dead point, the lower connecting frame (36) can abut against the limiting part (38) to form a rigid support.

5. A transportation method according to claim 2, characterized in that: The lower body (32) is provided with a load-bearing wheel (33) and a drive gear system (34). The load-bearing wheel (33) and the drive gear system (34) are staggered. The drive gear system (34) can mesh with the toothed rail (15) on the ramp (1). The load-bearing wheel (33) can roll into contact with the load-bearing rail (14) on the ramp (1).

6. A transportation method according to claim 5, characterized in that: The upper body (31) includes a transport flatbed (311), with side baffles (314) provided on both sides of the parking area of ​​the transport flatbed (311), and a vehicle blocking plate (312) hinged on the transport flatbed (311) and driven to flip by the vehicle blocking cylinder (313).

7. The transportation method according to claim 1, characterized in that: The bottom of the ramp (1) is connected to the straight road (4), and the straight road (4) is a buffer lane (5) going forward. After the straight road (4) turns, it is connected to the parallel road (6) at the bottom of the ramp. The parallel road (6) at the bottom of the ramp is divided into two branches: the downhill road (61) at the bottom of the ramp and the uphill road (62) at the bottom of the ramp. The top of the ramp (1) connects to the parallel lane (7) at the top of the ramp. The parallel lane (7) at the top of the ramp is divided into two branches: the downhill lane (71) at the top of the ramp and the uphill lane (72) at the top of the ramp.

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