Rotatable positioning bucket for mine

Abstract

The invention relates to the technical field of mine underground transportation, and discloses a mine hoisting bucket capable of being rotationally positioned, which comprises a barrel body with openings in the upper end surface and the lower end surface, an upper cover plate is fixedly connected to the top of the barrel body, a lower cover plate is fixedly connected to the bottom of the barrel body, a discharging pipe is in sliding fit with the middle of the lower cover plate, and a first limiting block is fixedly connected to the top of the discharging pipe; grooves are formed in the two sides of the inner wall of the barrel in the radial direction, second limiting blocks are arranged in the grooves in a sliding fit mode, and the tops of the second limiting blocks abut against the bottom faces of the first limiting blocks. Through water pressure and gravity, the piston extrudes the cylinder body, so that the interior of the cylinder body is in a high-pressure state, concrete slurry in the cylinder body is rapidly discharged from the discharging groove in the rotating ring under the high-pressure effect and does centrifugal movement, and therefore the time needed by concrete pouring is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground transportation in mines, and more specifically, to a rotatably positioned bucket for mines. Background Art

[0002] During the construction of a mine shaft, sudden water inrush may occur. At present, most of the solutions for dealing with flooding in China are the following two. ① Forced drainage: Increase drainage equipment to increase drainage capacity, drain the water from the shaft to a drainage capacity that exceeds the total water inflow of the shaft, and then take measures to grout water blocking at the working face. ② Water blocking: After the water level rises to the static water level, use static water slag grouting to seal water, pipeline concrete sealing water, etc. to block water, seal the water outlet at the bottom of the shaft, and then drain the water.

[0003] In mines with complex geological conditions, when a water inrush occurs in a shaft more than one kilometer deep, the water depth in the shaft may reach more than 300 meters. At this time, traditional water blocking measures such as static water slag grouting and sealing are no longer applicable, and water depths of more than 300 meters also increase the uncertainty of pipeline concrete transportation; if forced drainage is used, it is easy to cause surface subsidence near the shaft, causing greater losses.

[0004] Based on the above description, and considering the construction conditions and costs, in the actual construction process, for water inrush events with a water depth of more than 300 meters in the well, a solution of pouring a water stop layer by conveying concrete with a bucket is usually used to seal the water outlet at the bottom of the well. The workflow is as follows: After the concrete is mixed at the ground mixing station, it is loaded into a bucket and transported to the bottom of the well for unloading with the main hoist originally set up at the wellhead to complete the pouring of the water stop layer. In general, the water stop layer uses C40 concrete, and the pouring height of the concrete is not less than 20m.

[0005] At present, most mines use buckets to cast underwater concrete at the bottom of the well. Most of the buckets used are modified bottom-discharging buckets. When this type of bucket is casting concrete at the bottom of the well, the concrete slurry in the bucket can only rely on gravity to slowly discharge along the discharge port at the bottom of the bucket, resulting in low casting efficiency. In addition, the cast concrete will accumulate under the bucket at the beginning, and it will take some time to be spread on the bottom of the well by its own fluidity, which prolongs the time required for construction. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a rotatable and positionable bucket for use in mines, which has the advantage of improving concrete pouring efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotatable and positionable bucket for mining, comprising a cylinder with upper and lower end surfaces opened, an upper cover plate fixedly connected to the top of the cylinder, a lower cover plate fixedly connected to the bottom of the cylinder, a discharge pipe slidably matched in the middle of the lower cover plate, a first limit block fixedly connected to the top of the discharge pipe, grooves radially opened on both sides of the inner wall of the cylinder, a second limit block slidably matched in the groove, and the top of the second limit block abuts against the bottom surface of the first limit block;

[0008] A circular rotating ring is rotatably installed at the bottom of the discharge pipe, and arc-shaped discharge grooves are opened at equal intervals inside the rotating ring. The bottom of the rotating ring is rotatably installed on the top of the stopper, and a sleeve is fixedly connected to the middle of the upper surface of the stopper. A support rod is slidably fitted in the sleeve, and the bottom end of the support rod extends to the bottom of the stopper, and the top end of the support rod extends to above the upper cover plate and is provided with a driving structure to drive the second limit block to slide in the groove.

[0009] As a preferred technical solution of the present invention, an expansion structure is provided at the bottom of the support rod to increase the area of ​​the bottom surface of the support rod, and the expansion structure includes a hinge seat and a plurality of movable rods. The hinge seat is fixedly connected to the bottom of the support rod, and a plurality of hinge grooves are evenly spaced on the outer wall of the hinge seat. One end of the movable rod is hinged in the hinge groove and the other end is fixedly connected to a slide plate, and one end of the slide plate is in an arc shape.

[0010] As a preferred technical solution of the present invention, the driving structure includes an extension rod, which is slidably fitted in the cylinder wall of the cylinder along the vertical direction, and the bottom end of the extension rod extends into the groove and is fixedly connected to a first rack at the bottom end, and a transmission gear is rotatably installed in the groove, and the first rack matches the transmission gear, and a sliding groove is provided inside the second limit block, and a plate is slidably fitted in the sliding groove, and the thickness of the plate is less than the length of the sliding groove, and a second rack is horizontally fixedly connected to one side of the plate, and the second rack matches the transmission gear, and a second spring is horizontally fixedly connected to the inner wall of the sliding groove to apply horizontal elastic force to the plate.

[0011] As a preferred technical solution of the present invention, the top end of the extension rod extends above the upper cover plate and is horizontally fixed with a connecting rod at the top end, the top end of the support rod is fixed with a connecting piece, and the connecting rod is horizontally fixed to the outer wall of the connecting piece.

[0012] As a preferred technical solution of the present invention, a baffle is fixedly connected to the outer wall of the extension rod, and the baffle is located above the upper cover plate. A first spring is vertically fixedly connected to the upper surface of the upper cover plate to apply elastic force to the baffle.

[0013] As a preferred technical solution of the present invention, a cylinder body is vertically fixedly connected to the middle part of the upper cover plate, a piston is slidably fitted in the cylinder body, the top end of the sleeve extends into the cylinder body and is fixedly connected to the bottom surface of the piston, an air nozzle is fixedly connected to the bottom surface of the cylinder body, the air nozzle is sleeved in the sleeve, and the inner diameter of the air nozzle is larger than the outer diameter of the sleeve, an end cover is fixedly connected to the outer wall of the sleeve to seal the air nozzle, and a support spring is vertically fixedly connected to the inner bottom surface of the cylinder body to apply elastic force to the piston.

[0014] As a preferred technical solution of the present invention, a slot is provided on one side of the upper cover plate, the slot vertically penetrates the upper cover plate, a sealing plate is slidably fitted in the slot, a first water inlet is provided through the sealing plate, a second water inlet is provided through the wall of the cylinder body, a water baffle is fixedly connected to the top of the sealing plate, and a compression spring is vertically fixedly connected to the outer wall of the cylinder body to apply an upward elastic force to the sealing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention uses water pressure and gravity to make the piston squeeze the cylinder body so that the cylinder body is in a high-pressure state. Under the action of high pressure, the concrete slurry in the cylinder body is quickly discharged from the discharge groove in the rotating ring and performs centrifugal motion, thereby saving the time required for concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of a rotatable bucket for mining is shown in the figure. Figure 1 ;

[0018] Figure 2 The structure of a rotatable bucket for mining is shown in the figure. Figure 2 ;

[0019] Figure 3 It is a rear view of a rotatable and positionable bucket for use in mines according to the present invention;

[0020] Figure 4 The invention provides a rotatable and positionable bucket for mining. Figure 3 Middle AA section view;

[0021] Figure 5 It is a left view of a rotatable and positionable bucket for use in mines according to the present invention;

[0022] Figure 6 The invention provides a rotatable and positionable bucket for mining. Figure 5 Middle BB section;

[0023] Figure 7 The invention provides a rotatable and positionable bucket for mining. Figure 6 Enlarged view of point C in the middle;

[0024] Figure 8 It is a schematic diagram of the structure inside the barrel of a rotatable and positionable bucket for use in mines according to the present invention;

[0025] Fig. 9 The invention provides a rotatable and positionable bucket for mining. Figure 8 Enlarged view of point D in the middle;

[0026] Fig.10 It is a schematic diagram of the structure inside the feed pipe of a rotatable and positionable bucket for mining according to the present invention;

[0027] Fig.11 It is a schematic diagram of the structure inside the rotating ring of a rotatable and positionable bucket for use in mines according to the present invention;

[0028] Fig.12 The invention provides a rotatable and positionable bucket for mining. Figure 6 Enlarged view of point D in the middle;

[0029] In the figure: 1, cylinder; 101, feed pipe; 2, upper cover; 201, hanging rope; 3, lower cover; 4, cylinder; 5, piston; 6, sleeve; 7, support spring; 8, air nozzle; 9, end cover; 10, support rod; 11, stopper; 12, discharge pipe; 13, rotating ring; 14, discharge trough; 15, sealing plate; 16, compression spring; 17, second water outlet; 18, first water outlet; 19, stopper Water plate; 20, notch; 21, connector; 22, connecting rod; 23, extension rod; 24, first spring; 25, baffle; 26, first rack; 27, transmission gear; 28, second rack; 29, plate; 30, second limit block; 31, slide groove; 32, second spring; 33, first limit block; 34, groove; 35, hinge seat; 36, movable rod; 37, slide plate; 38, hinge groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: Figures 3 to 7As shown, the present invention provides a rotatable and positionable bucket for mining, comprising a barrel 1 with openings on both ends, an upper cover plate 2 fixedly connected to the top of the barrel 1, a lower cover plate 3 fixedly connected to the bottom of the barrel 1, a discharge pipe 12 slidably fitted in the middle of the lower cover plate 3, a first limit block 33 fixedly connected to the top of the discharge pipe 12, grooves 34 radially provided on both sides of the inner wall of the barrel 1, a second limit block 30 slidably fitted in the groove 34, and the top of the second limit block 30 abuts against the bottom surface of the first limit block 33;

[0032] A plurality of lifting rings connected to the lifting rope 201 are arranged on the outer wall of the upper cover plate 2, so as to connect the device to the hoist at the mine wellhead.

[0033] A feed pipe 101 is connected to the cylinder 1 for loading concrete slurry into the cylinder 1 . The opening and closing of the feed pipe 101 is controlled by a valve inside the pipe.

[0034] When the second limit block 30 slides in the groove 34 and moves to the bottom of the first limit block 33, the second limit block 30 will support the first limit block 33 to prevent the discharge pipe 12 from sliding down; and when the second limit block 30 moves away from under the first limit block 33, the discharge pipe 12 can slide vertically on the lower cover plate 3.

[0035] like Fig.10 and Fig.11 As shown, a circular rotating ring 13 is rotatably installed at the bottom of the discharge pipe 12, and arc-shaped discharge grooves 14 are opened at equal intervals inside the rotating ring 13. The bottom of the rotating ring 13 is rotatably installed on the top of the stopper 11. A sleeve 6 is fixedly connected to the middle of the upper surface of the stopper 11, and a support rod 10 is slidably fitted in the sleeve 6. The bottom end of the support rod 10 extends to the bottom of the stopper 11, and the top end of the support rod 10 extends to the top of the upper cover plate 2 and is provided with a driving structure to drive the second limit block 30 to slide in the groove 34.

[0036] The outer wall of the rotating ring 13 is tightly attached to the inner wall of the annular lower cover plate 3, and the inner wall of the lower cover plate 3 seals the discharge groove 14 on the rotating ring 13 to prevent the concrete slurry in the cylinder 1 from being discharged;

[0037] Working principle: When pouring concrete slurry, the concrete slurry is injected into the cylinder 1 through the feed pipe 101, and then the cylinder 1 is transported to the bottom of the well through the hoist at the wellhead. After the cylinder 1 is at the bottom of the well, the second limit block 30 is retracted into the groove 34 through the driving structure. At this time, the second limit block 30 will be moved away from under the first limit block 33, and the discharge pipe 12 will slide down along the lower cover plate 3 under the action of gravity. After the discharge pipe 12 slides to the lowest point, the rotating ring 13 also detaches from the lower cover plate 3. At this time, the discharge groove 14 on the rotating ring 13 is connected to the outside.

[0038] Under the action of gravity, the concrete slurry in the cylinder 1 enters the rotating ring 13 from the discharge pipe 12 and is discharged to the bottom of the well through the discharge trough 14. Since the discharge trough 14 is arc-shaped, the concrete slurry will rotate when it is discharged from the discharge trough 14, and the concrete slurry discharged from the discharge trough 14 will also rotate accordingly. Affected by the initial velocity of the concrete slurry when it is discharged from the discharge trough 14, the concrete slurry will perform centrifugal motion after being discharged from the discharge trough 14, so that the concrete slurry is evenly dispersed to the bottom of the well, thereby reducing the time required for pouring and spreading the concrete slurry to the bottom of the well and improving the pouring efficiency.

[0039] Embodiment 2: Figure 6-Figure 9 and Fig.12 As shown, an expansion structure is provided at the bottom of the support rod 10 to increase the area of ​​the bottom surface of the support rod 10. The expansion structure includes a hinge seat 35 and a plurality of movable rods 36. The hinge seat 35 is fixedly connected to the bottom of the support rod 10. A plurality of hinge grooves 38 are evenly spaced on the outer wall of the hinge seat 35. One end of the movable rod 36 is hinged in the hinge groove 38 and the other end is fixedly connected to a slide plate 37. One end of the slide plate 37 is in an arc shape.

[0040] When the cylinder 1 moves downward in the shaft, the arc head at the bottom of the slide plate 37 will first contact the bottom of the shaft. Under the reverse force given by the bottom of the shaft, the slide plate 37 will perform centrifugal motion to spread out in all directions until the rotating table 35 contacts the bottom of the shaft. At this time, the slide plate 37 and the rotating table 35 provide supporting force for the support rod 10, so that the support rod 10 is fixed.

[0041] The slide plate 37 increases the support stability and prevents the support rod 10 from sinking into the poured concrete on the working surface without being stressed.

[0042] like Figure 6-Figure 9 As shown, the driving structure includes an extension rod 23, which is slidably fitted in the cylinder wall of the cylinder body 1 along the vertical direction, and the bottom end of the extension rod 23 extends into the groove 34 and is fixedly connected to the first rack 26 at the bottom end, and a transmission gear 27 is rotatably installed in the groove 34, and the first rack 26 matches the transmission gear 27. A slide groove 31 is opened inside the second limit block 30, and a plate 29 is slidably fitted in the slide groove 31. The thickness of the plate 29 is less than the length of the slide groove 31, and a second rack 28 is horizontally fixedly connected to one side of the plate 29. The rack 28 matches the transmission gear 27, and a second spring 32 is horizontally fixed on the inner wall of the slide groove 31 to apply horizontal elastic force to the plate 29. The top end of the extension rod 23 extends to above the upper cover 2 and is horizontally fixed with a connecting rod 22 at the top end. The top end of the support rod 10 is fixed with a connecting piece 21, and the connecting rod 22 is horizontally fixed to the outer wall of the connecting piece 21. A baffle 25 is fixed on the outer wall of the extension rod 23, and the baffle 25 is located above the upper cover 2. A first spring 24 is vertically fixed to the upper surface of the upper cover 2 to apply elastic force to the baffle 25.

[0043] When the support rod 10 is fixed, the cylinder 1 and the concrete slurry inside it will slide down along the support rod 10 under the action of gravity, and the support rod 10 will move upward relative to the cylinder 1. At this time, the support rod 10 applies an upward force to the extension rod 23 through the connecting rod 22, so that the extension rod 23 moves upward relative to the cylinder 1, and the extension rod 23 will drive the first rack 26 at the bottom to move upward in the groove 34. During the upward movement of the first rack 26, the second rack 28 will be driven away from the feed pipe 12 through the transmission gear 27. The second rack 28 will drive the second limit block 30 to retract into the groove 34 through the plate 29, so that the second limit block 30 is moved away from the bottom of the first limit block 33. When the second limit block 30 is moved away from the bottom of the first limit block 33, the elevator stops working and no longer drives the cylinder 1 to move downward. At this time, the height of the cylinder 1 no longer changes.

[0044] Embodiment 3: Figure 3-Figure 6 As shown, a cylinder body 4 is vertically fixedly connected to the middle part of the upper cover plate 2, a piston 5 is slidably fitted in the cylinder body 4, a top end of a sleeve 6 extends into the cylinder body 4 and is fixedly connected to the bottom surface of the piston 5, an air nozzle 8 is fixedly connected to the bottom surface of the cylinder body 4, the air nozzle 8 is sleeved in the sleeve 6, and the inner diameter of the air nozzle 8 is larger than the outer diameter of the sleeve 6, an end cover 9 is fixedly connected to the outer wall of the sleeve 6 for sealing the air nozzle 8, and a support spring 7 is vertically fixedly connected to the inner bottom surface of the cylinder body 4 to apply elastic force to the piston 5.

[0045] When the cylinder 1 is located at the bottom of the well and its height no longer changes, the discharge pipe 12 will slide down to the lowest point. During the downward movement of the discharge pipe 12, the sleeve 6 will drive the end cover 9 to move downward, so that the end cover 9 is removed from the air nozzle 8. Under the action of gravity and external water pressure, the piston 5 squeezes the air in the cylinder 4 into the cylinder 1, so that the cylinder 1 maintains a high-pressure state. Under the action of high pressure, the concrete slurry in the cylinder 1 can increase the discharge speed, thereby improving the efficiency of concrete slurry pouring.

[0046] Embodiment 4: Figure 1-Figure 4 As shown, a slot 20 is provided on one side of the upper cover plate 2, and the slot 20 vertically penetrates the upper cover plate 2. A sealing plate 15 is slidably fitted in the slot 20. A first water inlet 18 is provided through the sealing plate 15, and a second water inlet 17 is provided through the wall of the cylinder 1. A water retaining plate 19 is fixedly connected to the top of the sealing plate 15, and a compression spring 16 is vertically fixedly connected to the outer wall of the cylinder 1 to apply an upward elastic force to the sealing plate 15.

[0047] After the concrete slurry in the cylinder 1 is poured, the elevator is restarted and drives the cylinder 1 to move upward. During the upward movement of the cylinder 1, the water retaining plate 19 will also move upward. The water retaining plate 19 will be subject to the resistance given by the water body during the upward movement. Under the action of the resistance, the water retaining plate 19 will drive the sealing plate 15 to slide down in the groove 20, and the first water inlet 18 on the sealing plate 15 will also slide down. When the first water inlet 18 slides down to coincide with the second water inlet 17, the inside of the cylinder 1 will be connected with the outside world. At this time, the outside water will enter the cylinder 1 from the first water inlet 18 and the second water inlet 17. After entering the cylinder 1, the water will flush the concrete slurry remaining in the cylinder.

[0048] The working principle and use process of the present invention:

[0049] When pouring concrete slurry, the concrete slurry is injected into the cylinder 1 through the feed pipe 101, and then the cylinder 1 is transported to the bottom of the well by the hoist at the wellhead. When the cylinder 1 moves downward in the vertical shaft, the arc head at the bottom of the slide plate 37 will first contact the bottom of the well. Under the reverse force given by the bottom of the well, the slide plate 37 will perform centrifugal motion to spread to the surroundings until the rotating table 35 contacts the bottom of the well. At this time, the slide plate 37 and the rotating table 35 provide support force for the support rod 10, so that the support rod 10 is fixed.

[0050] When the support rod 10 is fixed, the elevator continues to work, and the cylinder 1 and the concrete slurry inside it will slide down along the support rod 10 under the action of gravity, and the support rod 10 will move upward relative to the cylinder 1. At this time, the support rod 10 applies an upward force to the extension rod 23 through the connecting rod 22, so that the extension rod 23 moves upward relative to the cylinder 1, and the extension rod 23 will drive the first rack 26 at the bottom to move upward in the groove 34. During the upward movement of the first rack 26, the second rack 28 will be driven away from the feed pipe 12 through the transmission gear 27. The second rack 28 will drive the second limit block 30 to retract into the groove 34 through the plate 29, so that the second limit block 30 is moved away from the bottom of the first limit block 33. When the second limit block 30 is moved away from the bottom of the first limit block 33, the elevator stops working and no longer drives the cylinder 1 to move downward. At this time, the height of the cylinder 1 no longer changes.

[0051] After the second limit block 30 is moved away from under the first limit block 33, the discharge pipe 12 slides down along the lower cover plate 3 under the action of gravity. During the downward movement of the discharge pipe 12, the sleeve 6 drives the end cover 9 to move downward, so that the end cover 9 is removed from the air nozzle 8. Under the action of gravity and external water pressure, the piston 5 squeezes the air in the cylinder body 4 into the barrel body 1, so that the inside of the barrel body 1 maintains a high pressure state.

[0052] After the discharge pipe 12 slides down to the lowest point, the rotating ring 13 also detaches from the lower cover plate 3. At this time, the discharge groove 14 on the rotating ring 13 is connected to the outside. At this time, the concrete slurry in the cylinder 1 enters the rotating ring 13 from the discharge pipe 12 at a high speed under the action of gravity and high pressure, and is discharged into the bottom of the well through the discharge groove 14. Since the discharge groove 14 is arc-shaped, the concrete slurry will rotate when it is discharged from the discharge groove 14, and the concrete slurry discharged from the discharge groove 14 will also rotate accordingly. Under the action of the initial velocity of the concrete slurry when it is discharged from the discharge groove 14, the concrete slurry will perform centrifugal motion after being discharged from the discharge groove 14, so that the concrete slurry is evenly dispersed to the bottom of the well, thereby reducing the time required for pouring and spreading the concrete slurry to the bottom of the well, thereby improving the pouring efficiency.

[0053] After the concrete slurry in the cylinder 1 is emptied, the elevator is restarted and drives the cylinder 1 to move upward. During the upward movement of the cylinder 1, the water baffle 19 will also move upward. The water baffle 19 will be subject to the resistance given by the water body during the upward movement. Under the action of the resistance, the water baffle 19 will drive the sealing plate 15 to slide down in the groove 20, and the first water inlet 18 on the sealing plate 15 will also slide down. When the first water inlet 18 slides down to coincide with the second water inlet 17, the interior of the cylinder 1 will be connected to the outside world. At this time, the outside water will enter the cylinder 1 from the first water inlet 18 and the second water inlet 17. After entering the cylinder 1, the water will flush the concrete slurry remaining in the cylinder.

[0054] After the whole device leaves the water surface, the support spring 7 will move the piston 5 upward to reset, and the piston 5 will drive the end cover 9, the discharge pipe 12 and the rotating ring 13 to reset through the sleeve 6. The support rod 10 and the extension rod 23 will also reset under the elastic force of the first spring 24, so that the second limit block 30 is reinserted under the first limit block 33; the sealing plate 15 will reset under the elastic force of the compression spring 16.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotatable bucket for use in mining, comprising a cylinder (1) with openings on both upper and lower end surfaces, characterized in that: An upper cover plate (2) is fixedly connected to the top of the cylinder (1), a lower cover plate (3) is fixedly connected to the bottom of the cylinder (1), a discharge pipe (12) is slidably fitted in the middle of the lower cover plate (3), a first limit block (33) is fixedly connected to the top of the discharge pipe (12), grooves (34) are radially provided on both sides of the inner wall of the cylinder (1), a second limit block (30) is slidably fitted in the groove (34), and the top of the second limit block (30) abuts against the bottom surface of the first limit block (33); A circular rotating ring (13) is rotatably mounted at the bottom of the discharge pipe (12), and arc-shaped discharge grooves (14) are arranged at equal intervals inside the rotating ring (13). The bottom of the rotating ring (13) is rotatably mounted on the top of the stopper (11), and a sleeve (6) is fixedly connected to the middle of the upper surface of the stopper (11). A support rod (10) is slidably fitted inside the sleeve (6). The bottom end of the support rod (10) extends below the stopper (11), and the top end of the support rod (10) extends above the upper cover plate (2) and is provided with a driving structure for driving the second limit block (30) to slide in the groove (34).

2. A rotatable bucket for mining according to claim 1, characterized in that: The bottom of the support rod (10) is provided with an expansion structure for increasing the area of ​​the bottom surface of the support rod (10), the expansion structure comprising a hinge seat (35) and a plurality of movable rods (36), the hinge seat (35) being fixedly connected to the bottom of the support rod (10), a plurality of hinge grooves (38) being evenly spaced on the outer wall of the hinge seat (35), one end of the movable rod (36) being hinged in the hinge groove (38) and the other end being fixedly connected to a slide plate (37), one end of the slide plate (37) being in an arc shape.

3. A rotatable bucket for mining according to claim 2, characterized in that: The driving structure comprises an extension rod (23), wherein the extension rod (23) is slidably fitted in the cylinder wall of the cylinder (1) along the vertical direction, the bottom end of the extension rod (23) extends into the groove (34) and is fixedly connected to a first rack (26), a transmission gear (27) is rotatably installed in the groove (34), the first rack (26) matches the transmission gear (27), a slide groove (31) is provided inside the second limit block (30), a plate (29) is slidably fitted in the slide groove (31), the thickness of the plate (29) is less than the length of the slide groove (31), a second rack (28) is horizontally fixedly connected to one side of the plate (29), the second rack (28) matches the transmission gear (27), and a second spring (32) is horizontally fixedly connected to the inner wall of the slide groove (31) to apply a horizontal elastic force to the plate (29).

4. A rotatable bucket for mining according to claim 3, characterized in that: The top end of the extension rod (23) extends to above the upper cover plate (2) and is horizontally fixedly connected to a connecting rod (22). The top end of the support rod (10) is fixedly connected to a connecting piece (21), and the connecting rod (22) is horizontally fixedly connected to the outer wall of the connecting piece (21).

5. A rotatable bucket for mining according to claim 4, characterized in that: A baffle (25) is fixedly connected to the outer wall of the extension rod (23); the baffle (25) is located above the upper cover plate (2); and a first spring (24) is vertically fixedly connected to the upper surface of the upper cover plate (2) to apply elastic force to the baffle (25).

6. A rotatable bucket for mining according to claim 5, characterized in that: A cylinder body (4) is vertically fixedly connected to the middle of the upper cover plate (2), a piston (5) is slidably fitted in the cylinder body (4), a top end of the sleeve (6) extends into the cylinder body (4) and is fixedly connected to the bottom surface of the piston (5), a gas nozzle (8) is fixedly connected to the bottom surface of the cylinder body (4), the gas nozzle (8) is sleeved in the sleeve (6), and the inner diameter of the gas nozzle (8) is larger than the outer diameter of the sleeve (6), an end cover (9) is fixedly connected to the outer wall of the sleeve (6) for sealing the gas nozzle (8), and a support spring (7) is vertically fixedly connected to the inner bottom surface of the cylinder body (4) for applying elastic force to the piston (5).

7. A rotatable bucket for mining according to claim 6, characterized in that: A notch (20) is provided on one side of the upper cover plate (2), the notch (20) vertically passing through the upper cover plate (2), a sealing plate (15) is slidably fitted in the notch (20), a first water inlet (18) is provided through the sealing plate (15), a second water inlet (17) is provided through the wall of the cylinder (1), a water retaining plate (19) is fixedly connected to the top of the sealing plate (15), and a compression spring (16) is vertically fixedly connected to the outer wall of the cylinder (1) to apply an upward elastic force to the sealing plate (15).

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