A single-track hoist falling car righting device and righting method for auxiliary transportation of a coal mine

Abstract

The present application belongs to the technical field of coal mine machinery, and discloses a monorail hoist drop car righting device and righting method for auxiliary transportation of coal mines. The righting device comprises a fixed plate arranged on the inner side of a ground track, a transverse guide rail, a transverse frame, a follow-up mechanism, a longitudinal guide rail and two push rods. The transverse guide rail is arranged on the fixed plate, and the direction of the transverse guide rail is parallel to the direction of the ground track. The transverse frame is slidably connected with the transverse guide rail, and the follow-up mechanism is arranged in the transverse frame in a liftable manner. The longitudinal guide rail is arranged on the top of the follow-up mechanism, and the direction of the longitudinal guide rail is perpendicular to the direction of the ground track. The two push rods are arranged on the two ends of the longitudinal guide rail in a perpendicular manner, and the two push rods can slide along the longitudinal guide rail. The designed stroke of the push rod from the center of the longitudinal guide rail is equal to half of the distance between the inner sides of the left and right wheels of the mine car. The present application can replace manual pushing and pulling righting of the mine car drop, realizes fast and efficient righting of the mine car drop, and greatly improves the transportation efficiency and safety of the monorail hoist drop car.

Description

Technical Field

[0001] This invention belongs to the field of coal mine machinery technology, specifically relating to a monorail hoisting and straightening device and method for auxiliary transportation in coal mines. Background Technology

[0002] After a mine car is transported by a monorail in an underground coal mine, it needs to be lowered onto the surface track. However, due to parallelism and lateral position errors between the monorail's center line and the surface track's center line, the mine car needs to be manually pushed or pulled to properly enter the surface track. Manual pushing and pulling is inefficient and prone to causing injuries. Lowering the mine car requires 3-5 people to assist; the work is time-consuming and physically demanding, and safety is difficult to guarantee.

[0003] In the prior art, Chinese patent document CN116788989A, published on September 22, 2023, discloses a monorail mine car lowering and straightening device, including two pairs of platform rails, a pair of straightening platforms, and a swing frame. Each pair of platform rails is respectively set on both sides of the mine car rail. The two straightening platforms are respectively rolled on the pair of platform rails by rollers. A traveling mechanism is set between the straightening platform and the platform rail. The lower end of the swing frame is hinged to the inner edge of each straightening platform. Multiple first push-pull cylinders are connected between the swing frame and the straightening platform. One end of each first push-pull cylinder is hinged to the swing frame, and the other end is hinged to the straightening platform. This device moves along the platform rails on both sides of the mine car rail through the two straightening platforms on both sides of the rail. When the monorail mine car is lowered, the first push-pull cylinders can push the two swing frames on the two straightening platforms to straighten the mine car, so that the mine car lands on the mine car rail. However, this device has the following problems:

[0004] 1. During assembly, the on-site construction work was excessive, which also occupied the pedestrian walkway and affected the passage of people.

[0005] 2. Different types of mining cars are incompatible due to their different wheel gauges.

[0006] Therefore, this device cannot meet the actual requirements of on-site use. In addition, some straightening mechanisms have a movable side of the track and a fixed side of the track. When the mine car falls to a certain distance from the track surface, the mine car stops falling, the movable end pushes it towards the track, and the fixed end pushes it out. In addition to the above problems, this mechanism will also have new problems such as the mine car getting stuck on the mechanism, the mine car disengaging from the push-out mechanism after the movable end pushes the mine car wheel into place, and the fixed falling distance being difficult to control. The above problems need to be solved urgently. Summary of the Invention

[0007] The purpose of this invention is to provide a monorail car straightening device and method for auxiliary transportation in coal mines, which replaces manual straightening of mine cars to ensure their safe placement onto the ground track, thereby improving the efficiency of monorail auxiliary transportation and increasing space utilization.

[0008] The technical solution adopted in this invention is a monorail hoisting and straightening device for auxiliary transportation in coal mines, comprising a fixed plate disposed on the inner side of the ground track, a transverse guide rail, a transverse frame, a follower mechanism, a longitudinal guide rail, and two push rods; the transverse guide rail is provided on the fixed plate, and the direction of the transverse guide rail is parallel to the direction of the ground track; the transverse frame is slidably connected to the transverse guide rail, and the follower mechanism is vertically mounted within the transverse frame; the longitudinal guide rail is disposed on the top of the follower mechanism, and the direction of the longitudinal guide rail is perpendicular to the direction of the ground track; the two push rods are respectively vertically disposed at both ends of the longitudinal guide rail, and both push rods can slide along the longitudinal guide rail; the designed stroke of the push rod from the center of the longitudinal guide rail is equal to half the distance between the inner sides of the left and right wheels of the mine car.

[0009] Preferably, the method further includes a push rod rotation and floating mechanism, which includes a slider, a sleeve, a base plate, and a spring. The slider is sleeved on the longitudinal guide rail, the inner side of the sleeve is sleeved on the slider, the outer side of the sleeve is rotatably connected to the push rod, the base plate is fixedly connected to the slider, the base plate extends below the push rod, and the springs are provided on both sides of the slider, with the springs connecting the push rod and the base plate.

[0010] Preferably, it also includes a transverse hydraulic cylinder, which is installed at the bottom of the fixed plate, and the cylinder rod head of the transverse hydraulic cylinder is connected to the transverse frame.

[0011] Preferably, it also includes a push rod cylinder, which is fixed to the top of the follower mechanism, and the cylinder rod head of the push rod cylinder is connected to the slider.

[0012] Preferably, there are two push rod cylinders, each used to drive two push rods to move.

[0013] Preferably, it also includes a pressing cylinder, which is installed in the transverse frame, and the cylinder rod head of the pressing cylinder is connected to the follower mechanism.

[0014] Preferably, the system further includes a control system, which includes a wire encoder, a controller, and a remote controller. The wire encoder is located on top of the follow-up mechanism and is used to measure the position of the push rod. The wire encoder, the lateral movement cylinder, the push rod cylinder, and the downward pressure cylinder are all communicatively connected to the controller, and the controller is wirelessly connected to the remote controller.

[0015] Preferably, the outer side of the push rod is L-shaped.

[0016] This invention also provides a method for righting a monorail hoist unloading car used in coal mine auxiliary transportation, comprising the following steps:

[0017] s1. The monorail transports the mine car to the top of the straightening station;

[0018] s2. The follow-up mechanism rises, and the transverse frame moves to the center position;

[0019] s3. Drive the two push rods to move along the longitudinal guide rail to their designed stroke;

[0020] s4. The monorail crane beam descends, causing the mine car to descend as well. The follow-up mechanism moves downward under the weight of the mine car, and the unloading is completed.

[0021] Furthermore, step s3 specifically includes: under the action of the push rod, the mine car moves to the left or right until the inner sides of the left and right wheels of the mine car contact the two push rods respectively, thereby eliminating the deviation between the mine car and the ground track.

[0022] The beneficial effects of this invention are as follows:

[0023] The monorail mine car lowering and straightening device of the present invention can replace manual pushing and pulling to straighten the mine car, improving production efficiency while avoiding personal accidents.

[0024] This invention designs a longitudinal guide rail perpendicular to the direction of the ground track and push rods perpendicular to the direction of the longitudinal guide rail. When the push rod slides to its designed stroke, the distance between it and the center of the longitudinal guide rail is half the distance between the inner sides of the left and right wheels of the mine car. When the mine car has a deviation perpendicular to the direction of the ground track, as the two push rods gradually slide, they will generate a pushing force on the inner side of one side of the mine car wheel, that is, the mine car is gradually straightened. Until the push rods slide to their designed stroke, the inner sides of both the left and right wheels of the mine car are in contact with the two push rods, thus eliminating the vertical deviation between the mine car and the ground track. This achieves fast and efficient mine car unloading and straightening, greatly improving the transportation efficiency and safety of monorail unloading.

[0025] The monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention is installed on the inner side of the ground track, without occupying the space on the outer side of the ground track and without affecting the pedestrian passage.

[0026] This invention achieves automatic alignment and adjustment of the mine car during the unloading process through a push rod rotating floating mechanism, ensuring that both the front and rear wheels of the mine car are in contact with the push rod without manual intervention, thus improving work efficiency.

[0027] This invention can be adapted to different types of mine cars by adjusting the design stroke of the push rod, and it has a simple structure, is quick to install, and is easy to promote and use. Attached Figure Description

[0028] Figure 1 This is a perspective view of the monorail hoisting and straightening device for auxiliary transportation in coal mines according to the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the monorail hoisting and straightening device for auxiliary transportation in coal mines during operation.

[0030] Figure 3 This is a front view of the monorail hoisting and straightening device for auxiliary transportation in coal mines according to the present invention.

[0031] Figure 4 This is a top view of the monorail hoisting and straightening device for auxiliary transportation in coal mines according to the present invention.

[0032] Figure 5 This is a schematic diagram of the control system connection of the present invention.

[0033] Figure 6 This is a schematic diagram of the structure of Embodiment 7 of the present invention.

[0034] In the diagram: 1. Fixed plate; 2. Transverse guide rail; 3. Transverse frame; 4. Transverse cylinder; 5. Follower mechanism; 6. Push rod; 7. Push rod cylinder; 8. Longitudinal guide rail; 9. Wire encoder; 10. Push rod rotation floating mechanism; 11. Downward cylinder; 12. Ground track; 13. Mine car; 14. Slider; 15. Sleeve; 16. Base plate; 17. Spring; 19. Controller; 20. Remote control. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention includes a fixed plate 1 disposed inside the ground track 12, a transverse guide rail 2, a transverse frame 3, a follower mechanism 5, a longitudinal guide rail 8, and two push rods 6; the transverse guide rail 2 is provided on the fixed plate 1, and the direction of the transverse guide rail 2 is parallel to the direction of the ground track 12; the transverse frame 3 is slidably connected to the transverse guide rail 2, and the follower mechanism 5 is vertically disposed within the transverse frame 3; the longitudinal guide rail 8 is disposed on the top of the follower mechanism 5, and the direction of the longitudinal guide rail 8 is perpendicular to the direction of the ground track 12; the two push rods 6 are respectively vertically disposed at both ends of the longitudinal guide rail 8, and both push rods 6 can slide along the longitudinal guide rail 8; the designed stroke of the push rod 6 from the center of the longitudinal guide rail 8 is equal to half the distance between the inner sides of the left and right wheels of the mine car 13.

[0038] When a mine car transported by a monorail arrives at the fixed landing point of the monorail unloading and straightening device used for auxiliary transportation in coal mines, the monorail stops. First, the follower mechanism 5 is raised, and the transverse frame 3 moves along the transverse guide rail 2 until the straightening center aligns with the center of the mine car. Then, the two push rods 6 slide along the longitudinal guide rail 8. When the mine car 13 deviates from the direction perpendicular to the ground track 12, the push rods 6 cause the mine car 13 to move to the left or right until the inner sides of the left and right wheels of the mine car 13 contact the two push rods 6 respectively, thus eliminating the deviation between the mine car 13 and the ground track 12. Afterward, the monorail lifting beam descends, causing the mine car to fall, and the follower mechanism 5 moves downward under the weight of the mine car. After the unloading is completed, the push rods 6 retract, and the follower mechanism 5 returns to its initial position, completing the unloading and straightening process. This invention achieves rapid and efficient mine car unloading and straightening, greatly improving the transportation efficiency and safety of monorail unloading.

[0039] This invention solves the problem of the non-fixed position of the monorail crane by using a transverse guide rail and a transverse frame, which can meet the actual use needs on site.

[0040] The monorail mine car lowering and straightening device of the present invention can replace manual pushing and pulling to straighten the mine car, improving production efficiency while avoiding personal accidents.

[0041] Example 2

[0042] Based on Example 1, in this example, as Figure 1 As shown, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention also includes a push rod rotating and floating mechanism 10. The push rod rotating and floating mechanism 10 includes a slider 14, a sleeve 15, a base plate 16, and a spring 17. The slider 14 is sleeved on the longitudinal guide rail 8. The inner side of the sleeve 15 is sleeved on the slider 14. The outer side of the sleeve 15 is rotatably connected to the push rod 6. The base plate 16 is fixedly connected to the slider 14 and extends to the bottom of the push rod 6. Springs 17 are provided on both sides of the slider 14 and are connected between the push rod 6 and the base plate 16.

[0043] When there is a height discrepancy between the front and rear wheels of the mine car 13, the floating mechanism 10, rotating the push rod, automatically aligns and adjusts the mine car 13 during the unloading process, ensuring that both the front and rear wheels of the mine car 13 are in contact with the push rod 6. This eliminates the need for manual intervention and improves operational efficiency. The principle is as follows:

[0044] When the lower wheel of the mine car 13 contacts one end of the push rod 6 and presses down, the push rod 6 will rotate around the slider 14 at a certain angle because the sleeve 15 is rotated on the push rod 6. At the same time, under the elastic force of the spring 17, the other end of the push rod 6 will be raised a certain distance to contact the higher wheel.

[0045] The fixing plate 1 is installed on the foundation frame, and the monorail mine car lowering and straightening device is installed in the middle of the ground track 12, which does not occupy the space outside the ground track 12 and does not affect the pedestrian passage.

[0046] The outer side of the push rod 6 is L-shaped to facilitate the catching of the falling mine car 13.

[0047] Example 3

[0048] Based on Example 1 or Example 2, in this example, as Figure 3 As shown, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention also includes a transverse hydraulic cylinder 4, which is installed at the bottom of the fixed plate 1, and the cylinder rod head of the transverse hydraulic cylinder 4 is connected to the transverse frame 3. The transverse hydraulic cylinder 4 is also connected to the hydraulic pump of the hydraulic system. The transverse frame 3 is driven to move along the transverse guide rail 2 by the transverse hydraulic cylinder 4.

[0049] Example 4

[0050] Based on Example 3, in this example, as Figure 4 As shown, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention also includes a push rod cylinder 7. The push rod cylinder 7 is fixed to the top of the follower mechanism 5 and is also connected to the hydraulic pump of the hydraulic system. Two push rod cylinders 7 are provided, which are used to drive two push rods 6 to move respectively. The cylinder head of the push rod cylinder 7 is connected to the slider 14. The movement of the cylinder head of the push rod cylinder 7 drives the slider 14 to move, that is, drives the sleeve 15 and the push rod 6 to move.

[0051] Example 5

[0052] Based on Embodiment 4, in this embodiment, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention further includes a downward pressing cylinder 11. The downward pressing cylinder 11 is installed in the transverse frame 3, and the cylinder rod head of the downward pressing cylinder 11 is connected to the bottom of the top plate of the follower mechanism 5. The follower mechanism 5 is moved up and down by the movement of the cylinder rod head of the downward pressing cylinder 11.

[0053] Example 6

[0054] Based on Example 5, in this example, as Figure 5 As shown, the monorail hoisting and straightening device for auxiliary transportation in coal mines of the present invention also includes a control system, which includes a wire encoder 9, a controller 19, and a remote controller 20.

[0055] The wire encoder 9 is located on top of the follower mechanism 5 and is used to measure the position of the push rod 6 to ensure that the push distance of the two push rods 6 is consistent.

[0056] The pull encoder 9, the transverse cylinder 4, the push rod cylinder 7, and the pressing cylinder 11 are all connected to the controller 19 for communication. The controller 19 is connected to the remote controller 20 for wireless communication.

[0057] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0058] The working process of this invention is as follows:

[0059] The remote control is manually operated. The downward-pressing cylinder 11 extends, lifting the upper part of the follower mechanism 5. Based on the center of the mine car, the lateral movement cylinder 4 extends or retracts, moving part of the lateral movement frame 3 until it aligns with the center of the mine car. The push rod cylinder 7 then pushes the push rod 6 outwards. The distance of the push rod 6 is monitored and fed back by the wire encoder 9 to ensure that the extension distance of the left and right push rods 6 remains consistent. After the inner side of the mine car wheels contacts the two push rods 6, the mine car moves left or right to eliminate the deviation between the wheels and the track. Then, the monorail crane lowers the car, and the follower mechanism 5 moves downwards under the weight of the mine car. When there is a height difference between the front and rear wheels of the mine car, the push rod rotation floating mechanism 10 performs self-adjustment. After the car is lowered, the push rod cylinder 7 retracts, causing the push rod 6 to retract; the downward-pressing cylinder 11 retracts, causing the follower mechanism 5 to retract to its initial position, completing the entire lowering and straightening process.

[0060] Example 7

[0061] like Figure 6 As shown, in this embodiment, the monorail hoisting and straightening device for coal mine auxiliary transportation of the present invention is provided with two sets, which can meet two working conditions. The first working condition: the monorail hoisting beam lifts one mine car for unloading, using one set of straightening mechanisms; the second working condition: the monorail hoisting beam lifts two mine cars for unloading, and the two sets of straightening mechanisms operate independently.

[0062] Example 8

[0063] This invention also provides a method for righting a monorail hoist unloading car used in coal mine auxiliary transportation, comprising the following steps:

[0064] s1. The monorail transport vehicle 13 arrives above the uprighting position.

[0065] s2. The follow-up mechanism 5 rises, and the transverse frame 3 moves to the center position.

[0066] s3. Drive the two push rods 6 to move along the longitudinal guide rail 8 to their designed stroke.

[0067] s4. The monorail crane beam descends, causing the mine car 13 to descend. The follower mechanism 5 moves downward under the weight of the mine car, and the unloading is completed.

[0068] Specifically, step s3 includes: under the action of push rod 6, the mine car 13 moves to the left or right until the inner sides of the left and right wheels of the mine car 13 contact the two push rods 6 respectively, thereby eliminating the deviation between the mine car 13 and the ground track 12.

[0069] The method for straightening a monorail car used in coal mine auxiliary transportation, as described in this invention, is ingeniously conceived, easy to implement, and effectively solves the problem of deviation when a monorail mine car is being lowered.

[0070] Components and structures not described in detail in the embodiments are well-known components, common structures, or common means in the industry, and will not be described in detail here. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A monorail hoisting and straightening device for auxiliary transportation in coal mines, characterized in that, The system includes a fixed plate (1) set inside the ground track (12), a transverse guide rail (2), a transverse frame (3), a follower mechanism (5), a longitudinal guide rail (8), and two push rods (6); the transverse guide rail (2) is set on the fixed plate (1), and the direction of the transverse guide rail (2) is parallel to the direction of the ground track (12); the transverse frame (3) is slidably connected to the transverse guide rail (2), and the follower mechanism (5) is vertically set inside the transverse frame (3); the longitudinal guide rail (8) is set on the top of the follower mechanism (5), and the direction of the longitudinal guide rail (8) is perpendicular to the direction of the ground track (12); the two push rods (6) are respectively vertically set at both ends of the longitudinal guide rail (8), and both push rods (6) can slide along the longitudinal guide rail (8); the designed stroke of the push rod (6) from the center of the longitudinal guide rail (8) is equal to half the distance between the inner sides of the left and right wheels of the mine car (13); It also includes a push rod rotating floating mechanism (10), which includes a slider (14), a sleeve (15), a base plate (16) and a spring (17). The slider (14) is sleeved on the longitudinal guide rail (8). The inner side of the sleeve (15) is sleeved on the slider (14). The outer side of the sleeve (15) is rotatably connected to the push rod (6). The base plate (16) is fixedly connected to the slider (14). The base plate (16) extends to the bottom of the push rod (6). The spring (17) is provided on both sides of the slider (14). The spring (17) is connected between the push rod (6) and the base plate (16).

2. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to claim 1, characterized in that, It also includes a transverse hydraulic cylinder (4), which is installed at the bottom of the fixed plate (1), and the cylinder rod head of the transverse hydraulic cylinder (4) is connected to the transverse frame (3).

3. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to claim 2, characterized in that, It also includes a push rod cylinder (7), which is fixed to the top of the follower mechanism (5), and the cylinder head of the push rod cylinder (7) is connected to the slider (14).

4. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to claim 3, characterized in that, Two push rod cylinders (7) are provided, which are used to drive two push rods (6) to move respectively.

5. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to claim 3, characterized in that, It also includes a pressing cylinder (11), which is installed in the transverse frame (3), and the cylinder rod head of the pressing cylinder (11) is connected to the follower mechanism (5).

6. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to claim 5, characterized in that, It also includes a control system, which includes a pull-wire encoder (9), a controller (19) and a remote controller (20). The pull-wire encoder (9) is located on the top of the follow-up mechanism (5) and is used to measure the position of the push rod (6). The pull-wire encoder (9), the transverse cylinder (4), the push rod cylinder (7) and the downward cylinder (11) are respectively connected to the controller (19) for communication. The controller (19) is wirelessly connected to the remote controller (20).

7. The monorail hoisting and straightening device for auxiliary transportation in coal mines according to any one of claims 1-6, characterized in that, The outer side of the push rod (6) is L-shaped.

8. A method for straightening a monorail hoisting car straightening device for auxiliary transportation in coal mines as described in claim 1, characterized in that... This includes the following steps: s1. The monorail transport car (13) arrives above the uprighting position; s2. The follower mechanism (5) rises, and the transverse frame (3) moves to the center position; s3. Drive the two push rods (6) to move along the longitudinal guide rail (8) to their designed stroke; s4. The monorail crane beam falls, causing the mine car (13) to fall. The follower mechanism (5) moves down under the weight of the mine car, and the car is unloaded.

9. The straightening method of the monorail hoisting car straightening device for auxiliary transportation in coal mines according to claim 8, characterized in that... Step s3 specifically includes: under the action of push rod (6), the mine car (13) moves to the left or right until the inner sides of the left and right wheels of the mine car (13) contact the two push rods (6) respectively, thus eliminating the deviation between the mine car (13) and the ground track (12).

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