A shallow and extremely thin coal seam coal surface mining and conveying device

Abstract

The present invention belongs to the technical field of coal mining, and specifically relates to a surface mining and conveying device for shallow and extremely thin coal seams; it comprises an inclined conveying pipe, a spiral rod is rotatably connected inside the conveying pipe, a first motor is fixedly connected to the top of the conveying pipe, the bottom end pipe opening of the conveying pipe serves as a material inlet, a downward opening on the pipe wall of the conveying pipe serves as a material outlet, guide plates are arranged on both sides of the material inlet of the conveying pipe, and the guide plates on both sides form a material guide trough; the outer sides of the guide plates on both sides are fixedly connected with slide rails, a support column assembly is slidably connected in the slide rails, the top end of the support column assembly is rotatably connected with a rotating shaft, a support arm is fixedly connected to the rotating shaft, the support arm is perpendicular to the rotating shaft, one end of the support arms on both sides away from the rotating shaft is fixedly connected to the same connecting shaft, the connecting shaft is perpendicular to the support arm, and a plurality of turning plates are fixedly connected to the connecting shaft; the conveying device has the functions of coal crushing and coal pushing, prevents large pieces of coal from clogging the conveying pipe, and improves the conveying efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining, and in particular relates to a surface mining and conveying device for shallow and extremely thin coal seams. Background Art

[0002] It is generally believed that coal seams with a thickness of less than 1.3m are thin coal seams, and coal seams with a thickness of less than 0.8m are extremely thin coal seams. Among my country's coal, extremely thin coal seams below 0.8m account for 13.98% of my country's total coal reserves, about 244.65 billion tons. The mining rate of extremely thin coal seams is less than 5%. For extremely thin coal seams above 0.5m, there are mature mining methods at home and abroad, either manual blasting or mechanized mining using coal mining machines. However, for extremely thin coal seams in the range of 0.3-0.5m, it is difficult to achieve mechanized mining, and most coal mines can only give up the mining of extremely thin coal seams below 0.5m.

[0003] For extremely thin coal seams shallower than 100m and with an inclination angle greater than 10 degrees, the first drilling site is first selected to arrange the first drilling site on the ground of the syncline axis, and a vertical well is drilled in the first drilling site. The drilling is completed 10m below the bottom plate of the target coal seam. A hole is made in the range of 3m above the coal seam group to 10m below the coal seam group to form a coal pocket, and a magnetic positioning device is lowered. A coal collection site is arranged at a suitable distance, and an inclined well is drilled in the coal collection site to connect with the pocket of the vertical well. After drilling, cement the well and lower the spiral drill rod. The second and third drilling sites are arranged on both sides of the first drilling site to drill coal holes. The upper coal seam is drilled first, and the coal falls into the pocket after drilling into the coal seam. The screw pump is started to drive the spiral drill rod to transport the coal blocks to the coal collection site.

[0004] When transporting coal, the coal accumulated in the coal pockets needs to be transported using a screw conveyor. However, when the screw conveyor is transporting, a lot of coal is drilled in the cavity of the coal pockets, and the coal cannot gather at the bottom of the conveyor, causing the conveyor to be unable to complete the material transportation. In addition, when the coal is transported, some large pieces of coal cannot be transported smoothly, which needs to be improved. Summary of the invention

[0005] The invention aims to solve the problem that during the surface mining of shallow and extremely thin coal seams, coal cannot be gathered at the bottom of the conveyor, the conveying efficiency is low, and the conveying is blocked by large pieces of coal.

[0006] The present invention provides the following technical solution: a shallow and extremely thin coal seam coal surface mining and conveying device, comprising an inclined conveying pipe, a spiral rod rotatably connected inside the conveying pipe, a first motor fixedly connected to the top of the conveying pipe, an output end of the first motor fixedly connected to the spiral rod, a bottom end pipe opening of the conveying pipe as a material inlet, a downward opening on the pipe wall of the conveying pipe as a material outlet, guide plates are arranged on both sides of the material inlet of the conveying pipe, and the guide plates on both sides form a material guide trough;

[0007] The outer sides of the guide plates on both sides are fixedly connected with slide rails, and the slide rails are slidably connected with support column assemblies, the support column assemblies are connected to a drive that can reciprocate in the slide rails, the top of the support column assembly is rotatably connected to a rotating shaft, and a support arm is fixedly connected to the rotating shaft, and the support arm is perpendicular to the rotating shaft, and the ends of the support arms on both sides away from the rotating shaft are fixedly connected to the same connecting shaft, and the connecting shaft is perpendicular to the support arm, and several flipping plates are fixedly connected to the connecting shaft, and the drive connected to the rotating shaft can drive the support arm to flip.

[0008] Furthermore, the support column assembly includes a fixed cylinder, a movable sleeve at the bottom of the fixed cylinder is slidably connected to the slide rail, a rotating cylinder is rotatably connected in the fixed cylinder, a first reciprocating screw rod is slidably connected in the rotating cylinder, a support plate is rotatably sleeved at the top end of the first reciprocating screw rod, a fixed block is fixedly connected to the top end of the support plate away from the first reciprocating screw rod, and a rotating shaft is rotatably connected to the fixed block;

[0009] A screw hole plate is fixedly connected to the top of the fixed cylinder, the first reciprocating screw rod penetrates the screw hole plate and is threadedly connected to the screw hole plate, convex plates are fixedly connected to both sides of the inner wall of the rotating cylinder, vertical grooves are opened on both sides of the first reciprocating screw rod, and the convex plates on both sides are respectively slidably connected to the vertical grooves on both sides, a guide block is fixedly connected to one side of the screw hole plate, and a guide rod is fixedly connected to the bottom of the support plate, and the guide rod penetrates the guide block and is slidably connected to the guide block.

[0010] Furthermore, a second motor is fixedly connected to the tail of the slide rail, a second reciprocating screw is rotatably connected inside the slide rail, an output end of the second motor is fixedly connected to the second reciprocating screw, and the second reciprocating screw passes through the movable sleeve and is threadedly connected to the movable sleeve.

[0011] Furthermore, a rotating block is rotatably connected to the movable sleeve, and the rotating block is sleeved on the second reciprocating screw rod. Two guide plates are formed in the hole at the center of the rotating block. Guide grooves are opened on both sides of the second reciprocating screw rod, and the two guide plates are respectively slidably connected to the two guide grooves.

[0012] The bottom of the rotating cylinder is fixedly connected with an intermediate shaft, which passes through the bottom plate of the fixed cylinder and is rotatably connected with the bottom plate. The bottom end of the intermediate shaft is fixedly connected with a third bevel gear, and the rotating block is provided with teeth meshing with the third bevel gear.

[0013] Furthermore, a fourth bevel gear is fixedly connected to the top end of the first reciprocating screw rod, a fifth bevel gear is fixedly connected to the rotating shaft, and the fourth bevel gear is meshed with the fifth bevel gear.

[0014] Furthermore, a rotating rod is fixedly connected between the two rotating shafts, a rotating sleeve is provided on the outer side of the rotating rod, and the rotating sleeve is rotatably connected to the rotating rod; a connecting rod is rotatably connected to the rotating sleeve, the top end of the connecting rod is fixedly connected to the second bevel gear, the rotating rod is fixedly connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, the bottom end of the connecting rod is fixedly connected to a sleeve, a sliding rod is movably inserted in the sleeve, a slide plate is fixed to the top end of the sliding rod, the slide plate and the sleeve are slidably connected, and the wire groove on the slide plate cooperates with the guide bar on the sleeve, the bottom end of the sliding rod is fixedly connected to a tool holder, a plurality of crushing knives are fixedly connected to the bottom of the tool holder, a spring is provided in the sleeve, and the spring top is supported between the sleeve and the slide plate.

[0015] Furthermore, a connecting ring is rotatably connected to the sliding rod, cross bars are fixedly connected on both sides of the connecting ring, L-shaped plates are fixedly connected to the outer ends of the cross bars, arc-shaped rods are fixedly connected to the outer ends of the L-shaped plates, sliding sleeves are fixedly connected to the bottom sides of the rotating sleeve, a limit rod is slidably connected inside the sliding sleeve, the bottom end of the limit rod is fixedly connected to the cross bar, a push rod is fixedly connected to the support arm, and the push rod corresponds to the arc-shaped rod.

[0016] Furthermore, a dust cover is fixedly connected to the top of the support plate, and the dust cover is arranged outside the fifth bevel gear and the fourth bevel gear.

[0017] Furthermore, a telescopic dust cover is connected to the top of the screw hole plate, the telescopic dust cover is sleeved on the outside of the first reciprocating screw rod, and the top end of the telescopic dust cover is connected to the bottom of the support plate.

[0018] Furthermore, a support plate is fixedly connected to the bottom end of the material conveying pipe, and the support plate is fixedly connected to the material guide plates on both sides.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The turning plate can turn the coal cinders while pushing the coal cinders forward and backward when it moves, and can also turn the coal cinders driven by the support arm. When the fixed cylinder moves on the slide rail, it moves with the support arm, connecting shaft, turning plate and the like as a whole, and the second reciprocating screw rod that drives the fixed cylinder to move transmits power through the rotating block, the intermediate shaft, the rotating cylinder, the first reciprocating screw rod, the fourth bevel gear, the fifth bevel gear, the rotating shaft and the like, which can drive the support arm to swing, and the support arm drives the turning plate to scrape the coal above and below the coal bag, so as to facilitate the transportation of the coal.

[0021] The power is also transmitted to the sleeve through the rotating rod, and finally reaches the knife holder. The crushing knife on the knife holder rotates to crush the coal, so as to facilitate transmission and prevent material jamming. When the support arm rotates, it drives the push rod to rotate, and the push rod can push the arc rod up, so that the knife holder and the crushing knife are lifted, the sliding rod retracts into the sleeve, and the flip plate can pass under the crushing knife to prevent collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a front view schematic diagram of the present invention;

[0024] Figure 3 It is a front cross-sectional view of the present invention;

[0025] Figure 4 This is a schematic diagram of the installation of the flip plate;

[0026] Figure 5 is a structural schematic diagram of the slide rail;

[0027] Figure 6 It is a schematic diagram of the rotating drum transmission;

[0028] Figure 7 It is the structural schematic diagram of the transfer block;

[0029] Figure 8 It is a schematic diagram of the shaft drive;

[0030] Fig. 9 This is a schematic diagram of sleeve installation;

[0031] Fig.10 This is a schematic diagram of the crushing knife installation;

[0032] Fig.11 It is a structural schematic diagram of the turning plate;

[0033] Fig.12 It is a schematic diagram of the cooperation between the push rod and the arc rod;

[0034] Fig.13 It is the structural schematic diagram of the crushing knife;

[0035] Fig.14 It is a schematic diagram of the cooperation between the rotating block and the second reciprocating screw.

[0036] Numbers in the figure: 1-feeding pipe; 2-screw rod; 3-support plate; 4-guide plate; 5-slide rail; 6-fixed cylinder; 7-rotating cylinder; 8-first reciprocating screw rod; 9-support plate; 10-fixed block; 11-rotating shaft; 12-support arm; 13-connecting shaft; 14-turning plate; 15-push rod; 16-rotating rod; 17-rotating sleeve; 18-connecting rod; 19-sleeve; 20-slide rod; 21-slide plate; 22-spring; 23-connecting ring; 24-knife holder; 25-crushing knife; 26-cross bar; 27-L-shaped plate; 28 -arc rod; 29-sliding sleeve; 30-limiting rod; 31-first bevel gear; 32-second bevel gear; 33-second reciprocating screw; 34-moving sleeve; 35-rotating block; 36-guide plate; 37-third bevel gear; 38-guide groove; 39-vertical groove; 40-screw hole plate; 41-guide block; 42-guide rod; 43-fourth bevel gear; 44-fifth bevel gear; 45-telescopic dust cover; 46-dust cover; 47-mounting plate; 48-first motor; 49-discharging pipe; 50-second motor; 51-intermediate shaft. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] like Figure 1 , Figure 2 , Figure 3 As shown: a shallow and extremely thin coal seam coal surface mining and conveying device, including an inclined conveying pipe 1, a spiral rod 2 is rotatably connected inside the conveying pipe 1, a first motor 48 is fixedly connected to the top of the conveying pipe 1, the first motor 48 is fixed to the conveying pipe 1 through a mounting plate 47, the output end of the first motor 48 is fixedly connected to the spiral rod 2, the bottom end pipe opening of the conveying pipe 1 serves as a material inlet, the downward opening on the pipe wall of the conveying pipe 1 serves as a material outlet, a discharge pipe 49 is connected to the material outlet, guide plates 4 are arranged on both sides of the material inlet of the conveying pipe 1, and the guide plates 4 on both sides form a material guide trough; a support plate 3 is fixedly connected to the bottom end pipe opening of the conveying pipe 1, the support plate 3 is fixedly connected to the guide plates 4 on both sides, and the support plate 3 blocks the coal slag to prevent the coal slag from flowing to the back of the conveying pipe 1.

[0039] like Figure 4 , Figure 5As shown: the outer sides of the guide plates 4 on both sides are fixedly connected with slide rails 5, and the slide rails 5 are slidably connected with support column assemblies. The support column assemblies are connected and driven to move back and forth in the slide rails 5. The top of the support column assemblies is rotatably connected with a rotating shaft 11, and a support arm 12 is fixedly connected to the rotating shaft 11. The support arm 12 is perpendicular to the rotating shaft 11. The ends of the support arms 12 on both sides away from the rotating shaft 11 are fixedly connected to the same connecting shaft 13, and the connecting shaft 13 is perpendicular to the support arm 12. A plurality of flipping plates 14 are fixedly connected to the connecting shaft 13, and the plurality of flipping plates 14 are arranged at an angle. The connection drive on the rotating shaft 11 can drive the support arm 12 to flip. When the support column assembly reciprocates in the slide rail 5, the support arm 12 flips with the flipping plate 14, so that the flipping plate 14 pushes the coal slag to the material inlet of the feed pipe 1, thereby accelerating the coal feeding speed.

[0040] like Figure 5 , Figure 6 As shown: the support column assembly includes a fixed cylinder 6, a movable sleeve 34 at the bottom of the fixed cylinder 6 is slidably connected to the slide rail 5, a rotating cylinder 7 is rotatably connected in the fixed cylinder 6, a first reciprocating screw rod 8 is slidably connected in the rotating cylinder 7, a support plate 9 is rotatably sleeved on the top of the first reciprocating screw rod 8, a fixed block 10 is fixedly connected to the top of the support plate 9 away from the first reciprocating screw rod 8, and a rotating shaft 11 is rotatably connected to the fixed block 10;

[0041] A screw hole plate 40 is fixedly connected to the top of the fixed cylinder 6, and the first reciprocating screw rod 8 passes through the screw hole plate 40 and is threadedly connected to the screw hole plate 40. Convex plates are fixedly connected to the inner wall of the rotating cylinder 7 on both sides. Vertical grooves 39 are opened on both sides of the first reciprocating screw rod 8, and the convex plates on both sides are respectively slidably connected to the vertical grooves 39 on both sides. The rotating cylinder 7 transmits the torque to the first reciprocating screw rod 8 through the convex plates. When the first reciprocating screw rod 8 rotates, the first reciprocating screw rod 8 moves up and down due to the spiral cooperation with the screw hole plate 40. A guide block 41 is fixedly connected to one side of the screw hole plate 40, and a guide rod 42 is fixedly connected to the bottom of the support plate 9. The guide rod 42 passes through the guide block 41 and is slidably connected to the guide block 41. The sliding cooperation between the guide rod 42 and the guide block 41 makes the support plate 9 only move up and down with the first reciprocating screw rod 8 and cannot rotate.

[0042] A telescopic dust cover 45 is connected to the top of the screw hole plate 40 . The telescopic dust cover 45 is sleeved on the outside of the first reciprocating screw rod 8 . The top end of the telescopic dust cover 45 is connected to the bottom of the support plate 9 .

[0043] like Figure 5 As shown: the tail of the slide rail 5 is fixedly connected to the second motor 50, the inside of the slide rail 5 is rotatably connected to the second reciprocating screw 33, the output end of the second motor 50 is fixedly connected to the second reciprocating screw 33, the second reciprocating screw 33 passes through the moving sleeve 34 and is threadedly connected to the moving sleeve 34, and when the second reciprocating screw 33 rotates, it drives the moving sleeve 34 to move.

[0044] like Figure 6 , Figure 7 , Fig.14 As shown: a rotating block 35 is rotatably connected to the movable sleeve 34, and the rotating block 35 is sleeved on the second reciprocating screw rod 33. Two guide plates 36 are formed in the hole at the center of the rotating block 35, and guide grooves 38 are opened on both sides of the second reciprocating screw rod 33. The two guide plates 36 are respectively slidably connected to the two guide grooves 38; that is, the inner wall of the hole at the center of the rotating block 35 does not contact the second reciprocating screw rod 33, and the rotating block 35 contacts the guide groove 38 of the second reciprocating screw rod 33 through the guide plate 36, so that the second reciprocating screw rod 33 can drive the rotating block 35 to rotate.

[0045] An intermediate shaft 51 is fixedly connected to the bottom of the rotating cylinder 7. The intermediate shaft 51 passes through the bottom plate of the fixed cylinder 6 and is rotatably connected to the bottom plate. The bottom end of the intermediate shaft 51 is fixedly connected to the third bevel gear 37. The rotating block 35 is provided with teeth meshing with the third bevel gear 37. The rotating block 35 drives the intermediate shaft 51 to rotate through the third bevel gear 37, and the rotating cylinder 7 rotates synchronously with the intermediate shaft 51.

[0046] like Figure 5 , Figure 6 , Figure 8 As shown, the top of the first reciprocating screw 8 is fixedly connected with the fourth bevel gear 43, the rotating shaft 11 is fixedly connected with the fifth bevel gear 44, the fourth bevel gear 43 is meshed with the fifth bevel gear 44, and the first reciprocating screw 8 drives the rotating shaft 11 to rotate. The top of the support plate 9 is fixedly connected with a dust cover 46, and the dust cover 46 is set outside the fifth bevel gear 44 and the fourth bevel gear 43.

[0047] like Figure 4 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 As shown: a rotating rod 16 is fixedly connected between the two rotating shafts 11, and the rotating rod 16 rotates with the rotating shaft 11. A rotating sleeve 17 is sleeved on the outer side of the rotating rod 16, and the rotating sleeve 17 is rotatably connected to the rotating rod 16; a connecting rod 18 is rotatably connected to the rotating sleeve 17, and a second bevel gear 32 is fixedly connected to the top of the connecting rod 18, and a first bevel gear 31 is fixedly connected to the rotating rod 16, and the first bevel gear 31 is meshed with the second bevel gear 32. The rotating rod 16 drives the connecting rod 18 to rotate, and the bottom end of the connecting rod 18 is fixedly connected to the second bevel gear 32. A sleeve 19 is fixedly connected, a slide bar 20 is movably inserted in the sleeve 19, a slide plate 21 is fixed to the top of the slide bar 20, the slide plate 21 is slidably connected to the sleeve 19, and the wire groove on the slide plate 21 cooperates with the guide bar on the sleeve 19, the sleeve 19 drives the slide plate 21 to rotate, and then the slide bar 20 rotates, the bottom end of the slide bar 20 is fixedly connected to a tool holder 24, and a plurality of crushing knives 25 are fixedly connected to the bottom of the tool holder 24, a spring 22 is arranged in the sleeve 19, and the spring 22 is supported between the sleeve 19 and the slide plate 21.

[0048] A connecting ring 23 is rotatably connected to the slide bar 20, and the connecting ring 23 does not rotate when the slide bar 20 rotates. Cross bars 26 are fixedly connected on both sides of the connecting ring 23, and L-shaped plates 27 are fixedly connected to the outer ends of the cross bars 26, and arc-shaped rods 28 are fixedly connected to the outer ends of the L-shaped plates 27. Sliding sleeves 29 are fixedly connected to both sides of the bottom of the rotating sleeve 17, and a limit rod 30 is slidably connected inside the sliding sleeve 29. The bottom end of the limit rod 30 is fixedly connected to the cross bar 26. A push rod 15 is fixedly connected to the support arm 12, and the push rod 15 corresponds to the arc-shaped rod 28. When the support arm 12 rotates until the push rod 15 contacts the arc-shaped rod 28, the push rod 15 slides along the arc of the arc-shaped rod 28, and the rotating force is converted into an upward thrust, which lifts the tool holder 24 and the crushing knife 25, and the slide bar 20 retracts into the sleeve 19.

[0049] The working process of a shallow and extremely thin coal seam coal surface mining and transportation device of this embodiment is as follows:

[0050] The first motor 48 starts to drive the screw rod 2 to rotate, and the screw rod 2 lifts the coal slag in the material inlet of the feeding pipe 1 upward when rotating, so that the coal slag flows out from the discharge pipe 49. When the second motor 50 starts, it drives the second reciprocating screw rod 33 to rotate, and then drives the moving sleeve 34 to move. When the moving sleeve 34 moves, it drives the fixed cylinder 6 to move horizontally, so that the support arm 12 moves back and forth, and the flipping plate 14 on the support arm 12 moves, and the flipping plate 14 pushes the coal slag to the material inlet of the feeding pipe 1.

[0051] When the second reciprocating screw 33 rotates, due to the cooperation of the guide groove 38 and the guide plate 36, the rotating block 35 is driven to rotate. When the rotating block 35 rotates, the third bevel gear 37 is driven to rotate. The third bevel gear 37 drives the rotating cylinder 7 to rotate through the intermediate shaft 51. When the rotating cylinder 7 rotates, the convex plate inside it cooperates with the vertical groove 39 of the first reciprocating screw 8, thereby driving the first reciprocating screw 8 to rotate. When the first reciprocating screw 8 rotates, the screw hole of the screw hole plate 40 is screwed with the first reciprocating screw 8. The first reciprocating screw rod 8 reciprocates up and down when rotating, and drives the support plate 9 to rise and fall when moving up and down. The first reciprocating screw rod 8 drives the fourth bevel gear 43 to rotate when rotating, and the fourth bevel gear 43 drives the fifth bevel gear 44 to rotate when rotating, and the fifth bevel gear 44 drives the rotating shaft 11 to rotate, so that the rotating shaft 11 drives the support arm 12 to rotate, so that the support arm 12 drives the flipping plate 14 to rotate, and the flipping plate 14 scrapes the coal above and below the inside of the coal bag.

[0052] The rotating shaft 11 drives the rotating rod 16 to rotate, and when the rotating rod 16 rotates, it drives the first bevel gear 31 to rotate, and the first bevel gear 31 drives the second bevel gear 32 to rotate, and when the second bevel gear 32 rotates, it drives the connecting rod 18 and the sleeve 19 to rotate, and the sleeve 19 drives the slide bar 20 to rotate through the slide plate 21, and then the tool holder 24 rotates, thereby driving the multiple crushing knives 25 to rotate, and the multiple crushing knives 25 crush the coal to facilitate transportation and prevent blockage. When the support arm 12 rotates, the arc rod 28 is pushed by the push rod 15, and the arc rod 28 pushes the slide bar 20 to rise, and the slide bar 20 is received in the sleeve 19, and the crushing knife 25 and the tool holder 24 are lifted, so that the flip plate 14 can pass from below to prevent the two from conflicting.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shallow and very thin coal seam coal surface mining and transportation device, characterized by: The material conveying pipe (1) comprises an inclined material conveying pipe (1), wherein a spiral rod (2) is rotatably connected inside the material conveying pipe (1), a first motor (48) is fixedly connected to the top of the material conveying pipe (1), an output end of the first motor (48) is fixedly connected to the spiral rod (2), a bottom end of the material conveying pipe (1) serves as a material inlet, a downward opening on the wall of the material conveying pipe (1) serves as a material outlet, and material guide plates (4) are arranged on both sides of the material inlet of the material conveying pipe (1), and the material guide plates (4) on both sides form a material guide trough; The outer sides of the guide plates (4) on both sides are fixedly connected with slide rails (5), and the slide rails (5) are slidably connected with support column assemblies. The support column assemblies are connected to a drive and can reciprocate in the slide rails (5). The top of the support column assemblies is rotatably connected with a rotating shaft (11), and a support arm (12) is fixedly connected to the rotating shaft (11). The support arm (12) is perpendicular to the rotating shaft (11). The ends of the support arms (12) on both sides away from the rotating shaft (11) are fixedly connected to the same connecting shaft (13), and the connecting shaft (13) is perpendicular to the support arm (12). A plurality of flipping plates (14) are fixedly connected to the connecting shaft (13), and the connecting drive on the rotating shaft (11) can drive the support arm (12) to flip. A rotating rod (16) is fixedly connected between the two rotating shafts (11). When the rotating rod (16) rotates, it drives the connecting rod (18) and the sleeve (19) connected thereto to rotate. The sleeve (19) drives the sliding rod (20) to rotate via the sliding plate (21), thereby causing the knife holder (24) and the crushing knife (25) to rotate, thereby crushing the coal. The slide bar (20) is connected to an arc-shaped rod (28) via a connecting ring (23), and a push rod (15) is fixedly connected to the support arm (12). When the support arm (12) rotates, the push rod (15) pushes the arc-shaped rod (28), and the arc-shaped rod (28) pushes the slide bar (20) to rise and be stored in the sleeve (19), and the crushing knife (25) and the knife holder (24) are lifted, so that the turning plate (14) can pass from below.

2. The shallow and extremely thin coal seam coal surface mining and transportation device according to claim 1 is characterized by: The support column assembly comprises a fixed cylinder (6), a movable sleeve (34) at the bottom of the fixed cylinder (6) is slidably connected to the slide rail (5), a rotating cylinder (7) is rotatably connected inside the fixed cylinder (6), a first reciprocating screw rod (8) is slidably connected inside the rotating cylinder (7), a support plate (9) is rotatably sleeved at the top end of the first reciprocating screw rod (8), a fixed block (10) is fixedly connected to the top end of the support plate (9) away from the first reciprocating screw rod (8), and a rotating shaft (11) is rotatably connected to the fixed block (10); A screw hole plate (40) is fixedly connected to the top of the fixed cylinder (6), the first reciprocating screw rod (8) penetrates the screw hole plate (40) and is threadedly connected to the screw hole plate (40), convex plates are fixedly connected to the inner wall of the rotating cylinder (7) on both sides, vertical grooves (39) are opened on both sides of the first reciprocating screw rod (8), and the convex plates on both sides are slidably connected to the vertical grooves (39) on both sides, and a guide block (41) is fixedly connected to one side of the screw hole plate (40), and a guide rod (42) is fixedly connected to the bottom of the support plate (9), and the guide rod (42) penetrates the guide block (41) and is slidably connected to the guide block (41).

3. The shallow and extremely thin coal seam coal surface mining and transportation device according to claim 2 is characterized by: The tail of the slide rail (5) is fixedly connected to a second motor (50), the interior of the slide rail (5) is rotatably connected to a second reciprocating screw rod (33), the output end of the second motor (50) is fixedly connected to the second reciprocating screw rod (33), and the second reciprocating screw rod (33) passes through the movable sleeve (34) and is threadedly connected to the movable sleeve (34).

4. The surface mining and conveying device for shallow and extremely thin coal seams according to claim 3 is characterized by: The movable sleeve (34) is rotatably connected to a rotating block (35), the rotating block (35) is sleeved on the second reciprocating screw rod (33), two guide plates (36) are formed in a hole at the center of the rotating block (35), guide grooves (38) are formed on both sides of the second reciprocating screw rod (33), and the two guide plates (36) are slidably connected to the two guide grooves (38) respectively; An intermediate shaft (51) is fixedly connected to the bottom of the rotating cylinder (7), the intermediate shaft (51) passes through the bottom plate of the fixed cylinder (6) and is rotatably connected to the bottom plate, the bottom end of the intermediate shaft (51) is fixedly connected to a third bevel gear (37), and the rotating block (35) is provided with teeth meshing with the third bevel gear (37).

5. The shallow and extremely thin coal seam coal surface mining and transportation device according to claim 4 is characterized by: A fourth bevel gear (43) is fixedly connected to the top end of the first reciprocating screw rod (8), a fifth bevel gear (44) is fixedly connected to the rotating shaft (11), and the fourth bevel gear (43) is meshed with the fifth bevel gear (44).

6. The surface mining and conveying device for shallow and extremely thin coal seams according to claim 5 is characterized by: The rotating rod (16) is sleeved with a rotating sleeve (17) on the outside, and the rotating sleeve (17) is rotatably connected to the rotating rod (16); a connecting rod (18) is rotatably connected to the rotating sleeve (17), and the top end of the connecting rod (18) is fixedly connected to a second bevel gear (32); the rotating rod (16) is fixedly connected to a first bevel gear (31), and the first bevel gear (31) is meshed with the second bevel gear (32); the bottom end of the connecting rod (18) is fixedly connected to a sleeve (19), and the sleeve (19) A slide bar (20) is movably inserted inside, a slide plate (21) is fixed to the top of the slide bar (20), the slide plate (21) is slidably connected to the sleeve (19), and the wire groove on the slide plate (21) cooperates with the guide bar on the sleeve (19), the bottom end of the slide bar (20) is fixedly connected to a knife holder (24), and the bottom of the knife holder (24) is fixedly connected to a plurality of crushing knives (25), and a spring (22) is arranged inside the sleeve (19), and the spring (22) is supported between the sleeve (19) and the slide plate (21).

7. The surface mining and conveying device for shallow and extremely thin coal seams according to claim 6 is characterized by: The sliding rod (20) is rotatably connected to a connecting ring (23), and cross bars (26) are fixedly connected to both sides of the connecting ring (23). An L-shaped plate (27) is fixedly connected to the outer end of the cross bar (26), and an arc-shaped rod (28) is fixedly connected to the outer end of the L-shaped plate (27). Sliding sleeves (29) are fixedly connected to both sides of the bottom of the rotating sleeve (17), and a limit rod (30) is slidably connected inside the sliding sleeve (29), and the bottom end of the limit rod (30) is fixedly connected to the cross bar (26).

8. The surface mining and conveying device for shallow and extremely thin coal seams according to claim 5 is characterized by: A dust cover (46) is fixedly connected to the top of the support plate (9), and the dust cover (46) is arranged outside the fifth bevel gear (44) and the fourth bevel gear (43).

9. The shallow and extremely thin coal seam coal surface mining and transportation device according to claim 2 is characterized by: The top of the screw hole plate (40) is connected to a telescopic dust cover (45), the telescopic dust cover (45) is sleeved on the outside of the first reciprocating screw rod (8), and the top end of the telescopic dust cover (45) is connected to the bottom of the support plate (9).

10. The shallow and extremely thin coal seam coal surface mining and transportation device according to claim 1 is characterized by: A support plate (3) is fixedly connected to the bottom end of the material conveying pipe (1), and the support plate (3) is fixedly connected to the material guide plates (4) on both sides.

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