A light, agile and fast tunneling system

Abstract

This invention belongs to the technical field of tunneling equipment, specifically relating to a lightweight and rapid tunneling system, including a tunneling machine, a suspended telescopic belt conveyor, a bridge conveyor, a crusher feeder, and a suspension bridge transfer conveyor. The suspended telescopic belt conveyor is equipped with a belt storage device, a linear friction booster device, and a rail-mounted belt conveyor extension device. The bridge conveyor is suspended, with its feed end corresponding to the tunneling machine's discharge end and its discharge end corresponding to the crusher feeder's feed end. The suspension bridge transfer conveyor is also suspended, with its feed end corresponding to the crusher feeder's discharge end and its discharge end corresponding to the suspended telescopic belt conveyor's feed end. This invention features a lightweight structure, facilitating installation and adjustment. It is suitable for various undulating terrains, has low requirements for floor hardness, and can still operate normally even when the floor is soft or broken.

Description

Technical Field

[0005]

[0001] The present invention belongs to the technical field of tunneling devices, and specifically relates to a light and fast tunneling system. Background Art

[0002] At the present stage, all fully mechanized coal mining faces in China have been realized, and some have achieved automation and intelligence. Even the number of unmanned working faces is increasing year by year. The coordination between mining and tunneling has always been an important issue concerned in the process of coal production. Especially since the development of comprehensive automation and informatization of coal mining, the advancing speed of the coal mining face has been continuously accelerating, and at the same time, it is also required that the working speed of the coal roadway tunneling device serving the coal mining face be greatly improved.

[0003] The main body of the existing transfer machine supporting the light and fast tunneling system generally adopts a heavy truss and sliding frame structure, which has high requirements for the ground undulation and is prone to rubbing against the roof and bottom due to the ground undulation. In addition, the walking equipment of the transfer machine supporting the light and fast tunneling system generally adopts a stepping or crawler structure, with a large self-weight of the equipment, inconvenient telescopic adjustment, and due to the relatively long body of the transfer machine main body, there are disadvantages such as inconvenient installation and high requirements for the hardness of the floor. When the floor is soft and broken, the transfer machine cannot move forward normally.

[0004] Therefore, it is necessary to develop a new light and fast tunneling system. Summary of the Invention

[0005] The object of the present invention is to solve the above technical problems and propose a light and fast tunneling system.

[0006] The technical solution is as follows: a lightweight and rapid tunneling system, including a tunneling machine, a suspended telescopic belt conveyor, a bridge conveyor, a crusher feeder, and a suspension bridge transfer conveyor. The tunneling machine is equipped with a crawler-mounted traveling device at its bottom. The suspended telescopic belt conveyor is equipped with a belt storage device, a linear friction booster device, and a rail-mounted belt conveyor extension device. The rail-mounted belt conveyor extension device can pull the sliding suspended idler rollers of the suspended telescopic belt conveyor forward with the tunneling machine through its sliding power unit. The linear friction booster device can provide frictional assistance to the belt of the suspended telescopic belt conveyor. The belt storage device is correspondingly set at the unloading end of the suspended telescopic belt conveyor. The bridge conveyor is suspended... The overhead conveyor is suspended in mid-air, with its base frame hinged to the frame of the tunneling machine and the frame of the crushing feeder at both ends. The feed end of the bridge conveyor corresponds to the discharge end of the tunneling machine, and the discharge end of the bridge conveyor corresponds to the feed end of the crushing feeder. The crushing feeder has a self-propelled wheel set under its frame. The overhead conveyor is suspended in mid-air, with one end of its truss hinged to the frame of the crushing feeder and the other end hinged to the sliding power unit of the rail-mounted belt conveyor extension device. The feed end of the overhead conveyor corresponds to the discharge end of the crushing feeder, and the discharge end of the overhead conveyor corresponds to the feed end of the suspended telescopic belt conveyor.

[0007] Preferably, the belt storage device includes a belt storage bin and a tensioning mechanism. The belt storage bin includes a ground track, a fixed frame, an intermediate frame, and a traction frame. The fixed frame is fixed to the ground, and the intermediate frame and the traction frame are slidably connected to the ground track. The intermediate frame is located between the fixed frame and the traction frame. Multiple winding rollers are spaced apart on the fixed frame, the intermediate frame, and the traction frame from top to bottom along the same slope direction. The winding rollers on the fixed frame, the intermediate frame, and the traction frame are arranged in a front-to-back correspondence. The belt of the suspended telescopic conveyor is arranged in a multi-layer structure and is sequentially wrapped around the winding rollers on the fixed frame, the intermediate frame, and the traction frame. The tensioning mechanism can pull the traction frame to slide along the ground guide rail via a steel wire rope, and the traction frame can drive the intermediate frame to slide along the ground guide rail via a chain.

[0008] Preferably, the tensioning mechanism includes a drum and a hydraulic motor, the hydraulic motor being drivenly connected to the drum, one end of the wire rope being fixedly connected to the traction frame, and the other end being fixedly connected to the drum.

[0009] Preferably, the linear friction power device includes a linear friction assist device and two assist rollers. The two assist rollers and the assist drive unit are respectively connected to the hanging rail of the telescopic belt conveyor via hangers, and the assist drive unit is located between the two assist rollers. The belt of the telescopic belt conveyor is wound around the two assist rollers and is connected to the assist drive unit for transmission.

[0010] Preferably, the power assist drive unit includes a power assist motor and a power assist drive roller. The power assist motor drives the power assist drive roller to rotate, providing frictional assistance to the belt of the suspended telescopic conveyor belt that passes through the power assist drive roller.

[0011] Preferably, the rail-mounted belt conveyor extension device includes a slide rail and a sliding power unit connected below the suspension rail of the telescopic belt conveyor. Multiple slidable hanging idlers are slidably connected on the slide rail. The belt of the telescopic belt conveyor is slidably connected to each slidable hanging idler. Adjacent slidable hanging idlers are connected to each other by traction ropes. The sliding power unit is provided at one end of the slide rail near the bridge-type transfer machine. When the sliding power unit moves forward with the tunneling machine, it can pull the slidable hanging idlers forward along the slide rail.

[0012] Preferably, the sliding power unit includes a traveling trolley slidably connected to a slide rail via a roller. The traveling trolley is equipped with a roller motor for driving the roller to rotate forward or backward. The end of the traveling trolley frame near the suspension bridge transfer machine is connected to a redirecting pulley via a connecting rod. The redirecting pulley is rotatably connected to a pulley frame. The top of the pulley frame is slidably connected to the slide rail via a roller. A pull rope is connected to the frame of the traveling trolley. The other end of the pull rope passes around the redirecting pulley and is fixedly connected to the middle of the truss of the suspension bridge transfer machine.

[0013] Preferably, the feed inlet of the crusher is provided with a grid plate for diversion and buffering.

[0014] Preferably, the discharge end of the suspended telescopic belt conveyor is provided with a discharge roller. The discharge roller is connected to a base on the ground via an adjustable bracket. One end of the adjustable bracket is rotatably connected to the discharge roller, and the other end is hinged to the base. A support rod is hinged to the middle of the adjustable bracket, and the end of the support rod away from the adjustable bracket is fixed to the base.

[0015] Preferably, the drive device for the suspended telescopic belt conveyor is mounted on the base, and the drive device includes a variable frequency reduction motor and a transmission drum. The variable frequency reduction motor is connected to the transmission drum, and the transmission drum is used to provide driving force for the belt of the suspended telescopic belt conveyor.

[0016] This invention also includes other components that enable the normal operation of a lightweight and rapid tunneling system, all of which are conventional means in the art. In addition, devices or components not limited in this invention, such as tunneling machines, tracked walking devices, bridge conveyors, crushing feeders, suspension bridge transfer conveyors, self-propelled wheel sets, winding rollers, drums, hydraulic motors, power assist rollers, power assist motors, power assist drive rollers, hanging idlers, hanging rails, traveling trolleys, redirecting pulleys, grating plates, unloading rollers, support rods, variable frequency geared motors, transmission rollers, and unlimited parts on suspended telescopic belt conveyors, all adopt existing technologies in the art.

[0017] The working principle of this invention is as follows: During coal mining, tunneling machines often produce large pieces of material, and the coal output is uneven, with fluctuating instantaneous output. By installing a grid plate on top of the crusher feeder, the material is buffered and diverted. The crusher feeder then crushes the material, achieving particle size control and preventing large pieces from clogging the hopper at the transfer point. This also helps control the instantaneous output, ensuring uniform material transport and preventing spillage during transport due to excessive instantaneous output. The multi-point hinged structure in the vertical direction of the bridge-type transfer machine, crusher feeder, and bridge conveyor allows for stable operation on uneven ground. The multi-point hinged structure in the horizontal direction allows for adjustment of the axial deviation between the front and rear equipment. The use of a rail-mounted belt conveyor extension device and sliding hanging rollers facilitates the extension and adjustment of the telescopic belt conveyor as the tunneling machine advances. The hanging roller structure is suitable for applications where hardened ground is inconvenient. By employing a linear friction booster, the reliability of transport power in long tunnels is ensured.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1) It adopts a multi-point articulated structure of bridge conveyor, crusher feeder and suspension bridge transfer machine, which is lightweight, flexible and has multiple degrees of freedom, and can be used in various undulating terrains; 2) The equipment adopts multi-point power traction, including track walking device, self-propelled wheel set and sliding power unit. In addition, the sliding resistance of the hanging rail and slide rail is small. It can meet the traction requirements of the hanging telescopic belt conveyor to extend the traction force, while also ensuring that the equipment is lightweight and has low requirements for the ground. 3) The linear friction assist device is set up to realize multi-point drive, which can solve the problems of insufficient driving force and insufficient belt strength after the extended length of the suspended telescopic belt conveyor is too long, thereby improving the reliability of the device; In summary, the present invention has a lightweight structure, is easy to install and adjust, can be applied to various undulating terrains, has low requirements for the hardness of the base plate, and can still move and operate normally when the base plate is soft or broken. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention in an embodiment.

[0021] Figure 2 This is a schematic diagram of the connection structure of the tunneling machine end of the present invention in an embodiment.

[0022] Figure 3 for Figure 2 A top-view structural diagram.

[0023] Figure 4 This is a schematic diagram of the structure of the rail-mounted belt conveyor extension device of the present invention in an embodiment.

[0024] Figure 5 This is a schematic diagram of the linear friction power device and linear friction assist device of the present invention in an embodiment.

[0025] Figure 6 This is a schematic diagram of the connection structure at the end of the tape storage device of the present invention in an embodiment.

[0026] Figure 7 for Figure 6 An enlarged structural diagram of part A in the diagram. Detailed implementation methods; The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Example: like Figures 1-3As shown in this embodiment, a lightweight and rapid tunneling system includes a tunneling machine 1, a suspended telescopic belt conveyor 2, a bridge conveyor 3, a crusher feeder 4, and a suspension bridge transfer conveyor 5. The suspended telescopic belt conveyor is equipped with a belt storage device, a linear friction booster device, and a rail-mounted belt conveyor extension device. The tunneling machine has a crawler-mounted traveling device 6 at its bottom. The rail-mounted belt conveyor extension device can pull the sliding suspended idler roller 8 of the suspended telescopic belt conveyor forward with the tunneling machine through its sliding power unit. The linear friction booster device can provide friction assistance to the belt 9 of the suspended telescopic belt conveyor. The belt storage device is correspondingly set at the unloading end of the suspended telescopic belt conveyor. The bridge conveyor is suspended in the air, and its base frame 10 has both ends... The bridge conveyor is hinged to the frame 11 of the tunneling machine and the frame 12 of the crushing feeder, respectively. The feed end of the bridge conveyor corresponds to the discharge end of the tunneling machine, and the discharge end of the bridge conveyor corresponds to the feed end of the crushing feeder. The feed inlet of the crushing feeder is equipped with a grid plate 13 for diversion and buffering, and a self-propelled wheel set 14 is provided under the frame of the crushing feeder. The suspension bridge transfer machine is suspended in the air, and one end of the truss 15 of the suspension bridge transfer machine is hinged to the frame of the crushing feeder, and the other end is hinged to the sliding power unit of the rail belt conveyor extension device. The feed end of the suspension bridge transfer machine corresponds to the discharge end of the crushing feeder, and the discharge end of the suspension bridge transfer machine corresponds to the feed end of the suspended telescopic belt conveyor.

[0029] Figure 6 As shown, in this embodiment, the belt storage device includes a belt storage bin and a tensioning mechanism. The belt storage bin includes a ground track 16, a fixed frame 17, an intermediate frame 18, and a traction frame 19. The fixed frame is fixed to the ground, and the intermediate frame and the traction frame are slidably connected to the ground track, with the intermediate frame positioned between the fixed frame and the traction frame. Multiple winding rollers 20 are spaced apart on the fixed frame, intermediate frame, and traction frame from top to bottom along the same slope direction, and the winding rollers on the fixed frame, intermediate frame, and traction frame are arranged in a front-to-back correspondence. The belt of the suspended telescopic conveyor is arranged in a multi-layered structure, sequentially wrapped around the winding rollers on the fixed frame, intermediate frame, and traction frame. The tensioning mechanism can pull the traction frame along the ground guide rail via a steel wire rope 21, and the traction frame can drive the intermediate frame along the ground guide rail via a chain 22. The tensioning mechanism includes a drum 23 and a hydraulic motor 24. The hydraulic motor is drivenly connected to the drum, and one end of the steel wire rope is fixedly connected to the traction frame, and the other end is fixedly connected to the drum.

[0030] like Figure 5As shown in this embodiment, the linear friction power device includes a linear friction assist device comprising an assist drive unit 25 and two assist rollers 26. The two assist rollers and the assist drive unit are respectively connected to the suspension rail of the suspended telescopic belt conveyor via a hanger 27, and the assist drive unit is located between the two assist rollers. The belt of the suspended telescopic belt conveyor is wound around the two assist rollers and is connected to the assist drive unit for transmission. The assist drive unit includes an assist motor and an assist drive roller. The assist motor drives the assist drive roller to rotate, providing friction assistance to the belt of the suspended telescopic belt conveyor that wound around the assist drive roller.

[0031] like Figure 4 As shown in this embodiment, the rail-type belt conveyor extension device includes a slide rail 28 connected below the suspension rail of the telescopic belt conveyor and a sliding power unit. Multiple slidable hanging rollers are slidably connected on the slide rail. The belt of the telescopic belt conveyor is slidably connected to each slidable hanging roller. Adjacent slidable hanging rollers are connected to each other by traction ropes 29. A sliding power unit is provided at one end of the slide rail near the bridge-type transfer machine. When the sliding power unit moves forward with the tunneling machine, it can pull the slidable hanging rollers forward along the slide rail. The sliding power unit includes a traveling trolley 7 slidably connected to a slide rail via a roller. The traveling trolley is equipped with a roller motor (not shown in the figure) for driving the roller to rotate forward or backward. The end of the traveling trolley frame near the suspension bridge transfer machine is connected to a redirecting pulley 31 via a connecting rod 30. The redirecting pulley is rotatably connected to a pulley frame. The top of the pulley frame is slidably connected to the slide rail via a roller. A pull rope 32 is connected to the frame of the traveling trolley. The other end of the pull rope passes around the redirecting pulley and is fixedly connected to the middle of the truss of the suspension bridge transfer machine.

[0032] like Figure 7 As shown in this embodiment, the discharge end of the suspended telescopic belt conveyor is equipped with a discharge roller 34. The discharge roller is connected to a base 35 on the ground via an adjustable bracket 33. One end of the adjustable bracket is rotatably connected to the discharge roller, and the other end is hinged to the base. A support rod 36 is hinged to the middle of the adjustable bracket, and the end of the support rod away from the adjustable bracket is fixed to the base. The drive device 37 of the suspended telescopic belt conveyor is mounted on the base, and the drive device includes a variable frequency reduction motor and a transmission roller. The variable frequency reduction motor is drively connected to the transmission roller, and the transmission roller is used to provide driving force for the belt of the suspended telescopic belt conveyor.

[0033] The working principle of this invention is as follows: During coal mining, tunneling machines often produce large pieces of material, and the coal output is uneven, with fluctuating instantaneous output. By installing a grid plate on top of the crusher feeder, the material is buffered and diverted. The crusher feeder then crushes the material, achieving particle size control and preventing large pieces from clogging the hopper at the transfer point. This also helps control the instantaneous output, ensuring uniform material transport and preventing spillage during transport due to excessive instantaneous output. The multi-point hinged structure in the vertical direction of the bridge-type transfer machine, crusher feeder, and bridge conveyor allows for stable operation on uneven ground. The multi-point hinged structure in the horizontal direction allows for adjustment of the axial deviation between the front and rear equipment. The use of a rail-mounted belt conveyor extension device and sliding hanging rollers facilitates the extension and adjustment of the telescopic belt conveyor as the tunneling machine advances. The hanging roller structure is suitable for applications where hardened ground is inconvenient. By employing a linear friction booster, the reliability of transport power in long tunnels is ensured.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light, agile and fast tunneling system comprising a tunneling machine, the bottom of the tunneling machine being provided with a caterpillar walking device, characterized in that: It also includes suspended telescopic belt conveyors, bridge conveyors, crusher feeders, and suspension bridge transfer conveyors; The bridge conveyor is suspended in the air, and its bottom frame is hinged to the frame of the tunneling machine and the frame of the crushing feeder at both ends, respectively. The feed end of the bridge conveyor is set to correspond to the discharge end of the tunneling machine, and the discharge end of the bridge conveyor is set to correspond to the feed end of the crushing feeder. The crusher feeder is equipped with a self-propelled wheel set under its frame; The suspension bridge transfer machine is suspended in the air, and one end of the truss of the suspension bridge transfer machine is hinged to the frame of the crushing feeder. The suspended telescopic belt conveyor is equipped with a belt storage device, a linear friction booster device, and a rail-type belt conveyor extension device. The rail-mounted belt conveyor extension device includes a slide rail and a sliding power unit connected below the suspension rail of the telescopic belt conveyor. The sliding power unit is hinged to the other end of the truss of the bridge-type transfer machine. Multiple slidable suspended rollers are slidably connected to the slide rail. The belt of the telescopic belt conveyor is slidably connected to each slidable suspended roller. Adjacent slidable suspended rollers are interconnected by traction ropes. The sliding power unit is located at the end of the slide rail closest to the bridge-type transfer machine. The rail-mounted belt conveyor extension device, through the sliding power unit, can pull the slidable suspended rollers of the telescopic belt conveyor forward synchronously when the tunneling machine moves forward. The linear friction assist device provides frictional assistance to the conveyor belt of the telescopic conveyor. The device includes an assist drive unit and two assist rollers. The two assist rollers and the assist drive unit are connected to the suspension rail of the telescopic conveyor via hangers, with the assist drive unit positioned between the two assist rollers. The conveyor belt of the telescopic conveyor passes around the two assist rollers and is connected to the assist drive unit via a transmission connection. The assist drive unit includes an assist motor and an assist drive roller. The assist motor drives the assist drive roller to rotate, providing frictional assistance to the conveyor belt of the telescopic conveyor that passes around the assist drive roller. The belt storage device is correspondingly installed at the unloading end of the suspended telescopic belt conveyor; The feed end of the suspension bridge transfer machine is set to correspond to the discharge end of the crushing feeder, and the discharge end of the suspension bridge transfer machine is set to correspond to the feed end of the suspended telescopic belt conveyor.

2. A light, agile and fast tunneling system according to claim 1, characterized in that: The belt storage device includes a belt storage bin and a tensioning mechanism. The belt storage bin includes a ground track, a fixed frame, an intermediate frame, and a traction frame. The fixed frame is fixed to the ground. The intermediate frame and the traction frame are slidably connected to the ground track, and the intermediate frame is located between the fixed frame and the traction frame. Multiple winding rollers are spaced apart on the fixed frame, intermediate frame, and traction frame from top to bottom along the same slope direction. The winding rollers on the fixed frame, intermediate frame, and traction frame are arranged in a front-to-back correspondence. The belt of the suspended telescopic belt conveyor is arranged in a multi-layer structure and is sequentially wrapped around the winding rollers on the fixed frame, intermediate frame, and traction frame. The tensioning mechanism can pull the traction frame to slide along the ground guide rail via a steel wire rope. The traction frame can drive the intermediate frame to slide along the ground guide rail via a chain.

3. A light, agile and fast tunneling system according to claim 2, characterized in that: The tensioning mechanism includes a drum and a hydraulic motor. The hydraulic motor is connected to the drum in a transmission manner. One end of the wire rope is fixedly connected to the traction frame, and the other end is fixedly connected to the drum.

4. A light, agile and fast tunneling system according to claim 1, characterized in that: The sliding power unit includes a traveling trolley slidably connected to a slide rail via a roller. The traveling trolley is equipped with a roller motor for driving the roller to rotate forward or backward. The end of the traveling trolley frame near the suspension bridge transfer machine is connected to a redirecting pulley via a connecting rod. The redirecting pulley is rotatably connected to a pulley frame. The top of the pulley frame is slidably connected to the slide rail via a roller. A pull rope is connected to the frame of the traveling trolley. The other end of the pull rope passes around the redirecting pulley and is fixedly connected to the middle of the truss of the suspension bridge transfer machine.

5. A light, agile and fast tunneling system according to claim 1, characterized in that: The feed inlet of the crusher is equipped with a grid plate for diversion and buffering.

6. A light, agile and fast tunneling system according to claim 1, characterized in that: The discharge end of the suspended telescopic belt conveyor is equipped with a discharge roller. The discharge roller is connected to a base on the ground via an adjustable bracket. One end of the adjustable bracket is rotatably connected to the discharge roller, and the other end is hinged to the base. A support rod is hinged to the middle of the adjustable bracket, and the end of the support rod away from the adjustable bracket is fixed to the base.

7. A light, agile and fast tunneling system according to claim 6, characterized in that: The drive unit of the suspended telescopic belt conveyor is mounted on the base, and the drive unit includes a variable frequency reduction motor and a transmission drum. The variable frequency reduction motor is connected to the transmission drum, and the transmission drum is used to provide driving force for the belt of the suspended telescopic belt conveyor.

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