CN115245856B - Crushing device for mine tunnel massive gangue - Google Patents

Abstract

The invention discloses a crushing device for large gangue in a mine tunnel, which comprises a base, a supporting frame, a discharging frame and a crushing mechanism, wherein the supporting frame with supporting function is connected to the left side and the right side of the top of the base, the discharging frame is connected between the two supporting frames, the crushing mechanism for crushing the large gangue is arranged on the discharging frame, the feeding mechanism for feeding is arranged on the crushing mechanism, the extruding mechanism for pressing the large gangue is arranged between the crushing mechanism and the feeding mechanism, and the discharging mechanism is arranged below the discharging frame. According to the invention, the feeding transmission belt is wound between the second belt pulley on the upper side and the mounting frame, and can be used for transmitting the gangue, so that a worker is not required to put the gangue manually, the workload of the worker is reduced, the labor is further saved, and the working efficiency of the worker can be improved.

Description

Crushing device for mine tunnel massive gangue

Technical Field

The invention relates to a crushing device, in particular to a crushing device for large gangue in a mine tunnel.

Background

The underground rock roadway of the coal mine is constructed by adopting a drilling and blasting method, and after the construction is finished, a plurality of large gangue blocks are arranged on the mine roadway, and workers need to crush the large gangue blocks and transport the large gangue blocks.

When crushing, firstly, the large gangue is manually placed in the crusher, then the crusher is started, the crushing knife on the crusher crushes the large gangue, after the first large gangue is crushed, the second large gangue is manually placed in the crusher, and after all the large gangue is crushed, the crusher is closed. But traditional breaker is difficult to convey the massive waste rock, needs the manual feeding massive waste rock of operating personnel incessantly to working strength is great, and operating personnel is also injured easily, consequently, research and development at present can carry out the breaker of the mine tunnel massive waste rock of conveying to the massive waste rock.

Disclosure of Invention

In order to overcome the defects that the traditional crusher is difficult to convey the massive gangue, and workers are required to continuously and manually add the massive gangue, so that the working strength is high and the workers are easy to be injured, the invention provides the crushing device for the massive gangue in the mine tunnel, which can convey the massive gangue.

The invention adopts the technical scheme that: the utility model provides a breaker of mine tunnel large-piece waste rock, includes base, support frame, ejection of compact frame and broken mechanism, and base top left and right sides all is connected with the support frame that has the supporting role, is connected with ejection of compact frame between two support frames, is equipped with the broken mechanism that is used for broken large-piece waste rock on the ejection of compact frame, be equipped with the feeding mechanism that is used for the pay-off on the broken mechanism, broken mechanism with be equipped with between the feeding mechanism and be used for pressing the extrusion mechanism of large-piece waste rock, the below of ejection of compact frame is equipped with ejection of compact mechanism.

Further, the crushing mechanism comprises a crushing frame, a first rotating shaft, a crushing wheel, a first belt pulley, a first transmission belt, a servo motor and a transmission shaft; the crushing frame is arranged on the discharging frame, the middle part of the crushing frame is rotationally connected with a first rotating shaft, and the left side and the right side of the first rotating shaft penetrate through the crushing frame; the crushing machine is characterized in that a crushing wheel capable of rotating is connected to the first rotating shaft, a servo motor is connected to the rear side of the crushing frame, a transmission shaft is connected to the output shaft of the servo motor, first belt pulleys are connected to the same sides of the first rotating shaft and the transmission shaft, and the servo motor transmits power to the first rotating shaft through a transmission belt.

Further, both sides all are connected with nine fixed blocks around the discharging frame inner wall, the fixed block all is located between two adjacent break pulleys.

Further, the feeding mechanism comprises a connecting frame, a connecting cover, a mounting rack, a second rotating shaft, a feeding transmission belt, a second transmission belt and a second belt pulley; the connecting frame is installed at broken frame top, and the connecting frame top is connected with the connecting cover, and the connecting cover rear side is connected with the mounting bracket, and the connecting cover rear portion rotates and is connected with the second pivot, and second pivot and transmission shaft all are connected with the second belt pulley with one side, and it has the second drive belt to wind between two second belt pulleys to roll up, winds between second belt pulley and the mounting bracket of top and has the pay-off transmission belt that can transmit the massive waste rock.

Further, the extrusion mechanism comprises a fixed seat, a first rotating rod, a rotating piece, a rotating handle, a first torsion spring and a pressing piece; the two sets of fixing bases are arranged on the front side of the upper portion of the connecting frame, the number of the fixing bases in each set is two, the two fixing bases in each set are arranged on the left side and the right side, a first rotating rod is connected between the two fixing bases in each set in a rotating mode, a rotating piece is connected to the first rotating rod, a pressing piece is connected between the rear sides of the two rotating pieces, a first torsion spring capable of being twisted is connected between the left side and the right side of the lower portion of the rotating piece and the fixing bases, the first torsion spring is sleeved on the first rotating rod, and a rotating handle is connected to the lower side of the rotating piece.

Further, pushing mechanism is used for promoting twist grip, pushing mechanism includes mount, guide bar, slider, spring, runner and cam, both ends about first pivot are connected to the cam, and broken frame lower part front side is connected with two mounts, and two mounts are the left and right sides setting, all are connected with the guide bar that has the guide effect on the mount, and sliding connection has the slider between two guide bars, slider front side and twist grip contact, and slider left and right sides all rotates and is connected with the runner, runner and cam contact, all are connected with the spring that has the reset effect between slider front portion left and right sides and the mount inner wall, and the spring all overlaps on the guide bar.

Further, install protection machanism on the feeding mechanism, protection machanism includes second bull stick, protector and second torsional spring, and upper portion rotates and is connected with the second bull stick behind the junction housing, is connected with the protector that has the guard action on the second bull stick, all is connected with the second torsional spring that can twist reverse between the protector left and right sides and the junction housing inner wall, and the second torsional spring all overlaps on the second bull stick.

Further, discharge mechanism includes axis of rotation, ejection of compact transmission band, third belt pulley and third driving belt, and both sides all rotate around the support frame upper portion and are connected with the axis of rotation, and it has ejection of compact transmission band to wind between two axes of rotation, and the axis of rotation left side of rear side is connected with the third belt pulley, and first axis of rotation left side also is connected with the third belt pulley, winds between two third belt pulleys and rolls up there is third driving belt.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the feeding transmission belt is wound between the second belt pulley on the upper side and the mounting frame, and can be used for transmitting the gangue, so that an operator is not required to put the gangue manually, the workload of the operator is reduced, the manpower is further saved, and the working efficiency of the operator can be improved.

2. According to the pressing piece between the rear sides of the two rotating pieces, the pressing piece can press a large block of gangue, so that the gangue with a more round shape can be crushed smoothly, and the crushing efficiency of the device is improved.

3. According to the protective piece on the second rotating rod, broken stones can be prevented from being ejected outwards by the protective piece, surrounding people are prevented from being injured, and therefore the protective performance of the device is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic diagram of a second perspective structure of the present invention;

FIG. 3 is a schematic view of a partial three-dimensional structure of the present invention;

FIG. 4 is a schematic perspective view of a crushing mechanism according to the present invention;

FIG. 5 is an exploded view of a portion of the structure of the crushing mechanism of the present invention;

FIG. 6 is a schematic perspective view of a feeding mechanism according to the present invention;

FIG. 7 is a schematic perspective view of an extrusion mechanism according to the present invention;

FIG. 8 is an enlarged view of a part of the pressing mechanism of the present invention;

FIG. 9 is a schematic diagram showing a second perspective view of the pressing mechanism according to the present invention;

FIG. 10 is a schematic perspective view of a pushing mechanism according to the present invention;

FIG. 11 is a schematic perspective view of a protection mechanism according to the present invention;

FIG. 12 is an enlarged view of a part of the protective mechanism according to the present invention;

FIG. 13 is a schematic perspective view of a discharge mechanism according to the present invention;

in the figure: 1. base, 2, support frame, 3, discharge frame, 4, crushing mechanism, 40, crushing frame, 41, fixed block, 42, first pivot, 43, crushing wheel, 44, first belt pulley, 45, first drive belt, 46, servo motor, 47, transmission shaft, 5, feeding mechanism, 50, connection frame, 51, connection cover, 52, mounting bracket, 53, second pivot, 54, feeding transmission belt, 55, second drive belt, 56, second belt pulley, 6, pressing mechanism, 60, fixing base, 61, first rotating rod, 62, rotating member, 63, rotating handle, 64, first torsion spring, 65, pressing member, 7, pushing mechanism, 70, fixing bracket, 71, guide rod, 72, sliding member, 73, spring, 74, rotating wheel, 75, cam, 8, protection mechanism, 80, second rotating rod, 81, protection member, 82, second torsion spring, 9, discharge mechanism, 90, rotating shaft, 91, discharge transmission belt, 92, third belt pulley, 93, third drive belt.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-3, the invention discloses a crushing device for large gangue in a mine tunnel, which comprises a base 1, a support frame 2, a discharging frame 3, a crushing mechanism 4 and a feeding mechanism 5, wherein the left side and the right side of the top of the base 1 are both connected with the support frame 2, the discharging frame 3 is connected between the two support frames 2, the support frame 2 can support the discharging frame 3, the crushing mechanism 4 is arranged on the discharging frame 3, the feeding mechanism 5 is arranged on the crushing mechanism 4, an extrusion mechanism 6 for pressing the large gangue is arranged between the crushing mechanism 4 and the feeding mechanism 5, and a discharging mechanism 9 is arranged below the discharging frame 3.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, the crushing mechanism 4 comprises a crushing frame 40, a first rotating shaft 42, a crushing wheel 43, a first belt pulley 44, a first transmission belt 45, a servo motor 46 and a transmission shaft 47, wherein the crushing frame 40 is connected to the discharging frame 3 through bolts, the first rotating shaft 42 is rotationally connected to the middle part of the crushing frame 40, the left side and the right side of the first rotating shaft 42 penetrate through the crushing frame 40, the crushing wheel 43 is fixedly connected to the first rotating shaft 42, the crushing wheel 43 can crush a large block of gangue, the servo motor 46 is connected to the rear side of the crushing frame 40 through bolts, the transmission shaft 47 is connected to an output shaft of the servo motor 46 through a coupling, the first belt pulley 44 is connected to the right part of the transmission shaft 47, the first belt pulley 44 is also connected to the right side of the first rotating shaft 42, the first belt pulley 44 on the front side can enable the first rotating shaft 42 to rotate, and the first transmission belt pulley 45 is wound between the two first belt pulleys 44.

As shown in fig. 4 and 5, the front and rear sides of the inner wall of the discharging frame 3 are respectively connected with nine fixing blocks 41, the fixing blocks 41 are respectively located between two adjacent crushing wheels 43, and the crushing effect can be better under the cooperation of the fixing blocks 41 and the crushing wheels 43.

As shown in fig. 1, 2 and 6, the feeding mechanism 5 includes a connection frame 50, a connection cover 51, a mounting bracket 52, a second rotating shaft 53, a feeding transmission belt 54, a second transmission belt 55 and a second belt pulley 56, the connection frame 50 is connected to the top of the crushing frame 40 through bolts, the connection cover 51 is connected to the top of the connection frame 50 through bolts, the mounting bracket 52 is welded to the rear side of the connection cover 51, the second rotating shaft 53 is connected to the rear portion of the connection cover 51 in a rotating manner, the second belt pulley 56 is connected to the right side of the second rotating shaft 53, the second belt pulley 56 is also connected to the left portion of the transmission shaft 47, the transmission shaft 47 can enable the second belt pulley 56 on the lower side to rotate, the feeding transmission belt 55 is wound between the two second belt pulleys 56, the feeding transmission belt 54 is wound between the second belt pulley 56 on the upper side and the mounting bracket 52, and the feeding transmission belt 54 can transmit large blocks of gangue.

When an operator needs to crush the large gangue in the mine tunnel, the device can be used for crushing, firstly, the large gangue is placed on the feeding transmission belt 54, then the servo motor 46 is started, so that the output shaft of the servo motor 46 drives the transmission shaft 47 to rotate, the transmission shaft 47 rotates to drive the second belt pulley 56 and the second transmission belt 55 to rotate, further the second rotation shaft 53 and the feeding transmission belt 54 rotate, at the moment, the feeding transmission belt 54 transmits the large gangue into the connecting cover 51, then the large gangue falls into the crushing frame 40, so that the large gangue can be automatically transmitted into the crushing frame 40, the operator does not need to manually put the large gangue, the workload of the operator is reduced, and meanwhile, when the transmission shaft 47 rotates, the first belt pulley 44 and the first transmission belt 45 also rotate, then the first rotating shaft 42 and the crushing wheel 43 are driven to rotate, so that the crushing wheel 43 crushes the large-sized gangue, the crushing effect can be better under the cooperation of the fixed block 41 and the crushing wheel 43, then the crushed gangue can come out from the lower side of the discharging frame 3, after all the large-sized gangue is crushed, the servo motor 46 is closed, the output shaft of the servo motor 46 stops rotating, then the transmission shaft 47, the second belt pulley 56 and the second transmission belt 55 stop rotating, further the second rotating shaft 53 and the feeding transmission belt 54 stop rotating, meanwhile, the first belt pulley 44 and the first transmission belt 45 stop rotating, the first rotating shaft 42 and the crushing wheel 43 stop rotating, the large-sized gangue can be crushed by repeating the operations, and the large-sized gangue can be automatically transmitted through the feeding transmission belt 54, the operator is not required to manually put the large gangue into the crushing frame 40, so that the labor force of the operator is reduced, and the working efficiency of the operator is improved.

As shown in fig. 1, fig. 7, fig. 8 and fig. 9, the pressing mechanism 6 includes a fixing base 60, a first rotating rod 61, a rotating member 62, a rotating handle 63, a first torsion spring 64 and a pressing member 65, two groups of fixing bases 60 are connected to the front side of the upper portion of the connecting frame 50, the number of each group of fixing bases 60 is two, two fixing bases 60 of each group are arranged on the left side and the right side, the first rotating rod 61 is connected between the two fixing bases 60 of each group in a rotating manner, the rotating member 62 is connected to the first rotating rod 61, the pressing member 65 is connected between the rear sides of the two rotating members 62, the pressing member 65 can press a large piece of gangue, a first torsion spring 64 is connected between the left side and the right side of the lower portion of the rotating member 62 and the fixing bases 60, the first torsion spring 64 is sleeved on the first rotating rod 61, the first torsion spring 64 can reset the rotating member 62, the rotating handle 63 is welded to the lower side of the rotating member 62, and the rotating handle 63 can rotate the rotating member 62.

Because some gangue body types are round, the gangue can always rotate on the crushing wheel 43, so that the gangue cannot be crushed, an operator can use the extrusion mechanism 6 to operate, if the phenomenon that the gangue always rotates is caused, the rotating handle 63 rotates upwards, then the rotating piece 62 and the pressing piece 65 are driven to rotate, and then the first rotating rod 61 is driven to rotate, then the first torsion spring 64 can be twisted, at the moment, the pressing piece 65 can press the gangue, the gangue can be crushed smoothly, after the gangue is crushed, the rotating handle 63 is loosened, at the moment, under the action of the first torsion spring 64, the rotating piece 62 and the pressing piece 65 can reversely rotate and reset, then the first rotating rod 61 reversely rotates and resets, further the rotating handle 63 rotates and resets downwards, and when the above operation is repeated, for example, the gangue body types are round, the pressing piece 65 can press the gangue, so that the gangue can be always rotated, the gangue can be crushed smoothly, and the crushing efficiency of the device is improved.

As shown in fig. 1, fig. 2 and fig. 10, the device further comprises a pushing mechanism 7, the pushing mechanism 7 comprises fixing frames 70, guide rods 71, sliding pieces 72, springs 73, rotating wheels 74 and cams 75, the left and right parts of the first rotating shaft 42 are fixedly connected with cams 75, the first rotating shaft 42 can enable the cams 75 to rotate, the front side of the lower portion of the crushing frame 40 is connected with two fixing frames 70, the two fixing frames 70 are arranged on the left and right sides, the guide rods 71 are connected to the fixing frames 70, sliding pieces 72 are connected between the two guide rods 71 in a sliding mode, the front sides of the sliding pieces 72 are in contact with rotating handles 63, the guide rods 71 can guide the sliding pieces 72, the rotating wheels 74 are connected to the left and right sides of the sliding pieces 72 in a rotating mode, the rotating wheels 74 are in contact with the cams 75, the springs 73 are connected between the left and right sides of the front of the sliding pieces 72 and the inner walls of the fixing frames 70, the springs 73 are sleeved on the guide rods 71, and the springs 73 can enable the sliding pieces 72 to reset.

When the operator manually rotates the rotating handle 63 so that the pressing member 65 presses the gangue, the operator presses with a great force due to the rotation of the crushing wheel 43 and is also easily injured, so that the pushing mechanism 7 can be used to push the rotating handle 63, when the first rotating shaft 42 rotates, the first rotating shaft 42 also drives the cam 75 to rotate, when the protruding portion of the cam 75 rotates to be in contact with the rotating wheel 74, the cam 75 moves the rotating wheel 74 forward, the rotating wheel 74 also rotates, then the rotating wheel 74 drives the sliding member 72 to move forward, the rotating handle 63 rotates, the spring 73 is compressed, when the protruding portion of the cam 75 rotates to be separated from the rotating wheel 74, the sliding member 72 and the rotating wheel 74 move backward to reset under the action of the spring 73, and the rotating handle 63 also rotates to reset, so that the rotating handle 63 automatically rotates without manual rotation of the operator, and labor cost is reduced.

As shown in fig. 2, 11 and 12, the device further comprises a protection mechanism 8, the protection mechanism 8 comprises a second rotating rod 80, a protection piece 81 and a second torsion spring 82, the second rotating rod 80 is rotatably connected to the rear upper portion of the connecting cover 51, the protection piece 81 is connected to the second rotating rod 80, broken stones can be prevented from being ejected out by the protection piece 81, the second torsion spring 82 is connected between the left side and the right side of the protection piece 81 and the inner wall of the connecting cover 51, the second torsion spring 82 is sleeved on the second rotating rod 80, and the protection piece 81 can be rotated and reset by the second torsion spring 82.

In the process that the gangue is crushed, some broken stones can pop up from the connecting cover 51 and then hurt surrounding people, therefore, the protection mechanism 8 can be used for operation, when the feeding conveyor belt 54 brings the gangue into contact with the protection piece 81, the protection piece 81 can be rotated, then the second rotating rod 80 is driven to rotate, and then the second torsion spring 82 is twisted, when the gangue enters the connecting cover 51 and is separated from the protection piece 81, under the action of the second torsion spring 82, the protection piece 81 and the second rotating rod 80 can reversely reset, at the moment, the protection piece 81 can resist the popped broken stones, the above operation is repeated, when the broken stones are popped up, the protection piece 81 can resist the broken stones, so that the surrounding people can be protected, and the protection performance of the device is improved.

As shown in fig. 1, 2 and 13, the discharging mechanism 9 comprises a rotating shaft 90, a discharging transmission belt 91, a third belt pulley 92 and a third transmission belt 93, the rotating shaft 90 is rotatably connected to the front side and the rear side of the upper portion of the supporting frame 2, the discharging transmission belt 91 is wound between the two rotating shafts 90, the discharging transmission belt 91 can transmit crushed stones, the third belt pulley 92 is fixedly connected to the left side of the rotating shaft 90 at the rear side, the third belt pulley 92 is also connected to the left side of the first rotating shaft 42, and the third transmission belt 93 is wound between the two third belt pulleys 92.

When operating personnel need to transmit the broken waste rock, can use discharge mechanism 9 to operate, when first pivot 42 drives the third belt pulley 92 of upside and rotates, third belt pulley 92 and third drive belt 93 of downside also can rotate, and then make the play material conveying belt 91 rotate, so, can transmit the waste rock after breaking, when first pivot 42 stops rotating, third belt pulley 92 and third drive belt 93 also can stop rotating, then make play material conveying belt 91 stop rotating, repeat above operation, can transmit the waste rock after breaking, thereby make things convenient for operating personnel to collect the waste rock after breaking.

The foregoing has outlined rather broadly the more detailed description of the present application, wherein specific examples have been provided to illustrate the principles and embodiments of the present application, the description of the examples being provided solely to assist in the understanding of the method of the present application and the core concepts thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims (1)

1. The utility model provides a breaker of mine tunnel large-scale waste rock, includes base (1), support frame (2), ejection of compact frame (3) and crushing mechanism (4), and base (1) top left and right sides all is connected with support frame (2) that have the supporting role, is connected with ejection of compact frame (3) between two support frames (2), is equipped with on ejection of compact frame (3) and is used for broken crushing mechanism (4) of large-scale waste rock, its characterized in that: a feeding mechanism (5) for feeding is arranged on the crushing mechanism (4), an extrusion mechanism (6) for pressing the large gangue is arranged between the crushing mechanism (4) and the feeding mechanism (5), and a discharging mechanism (9) is arranged below the discharging frame (3);

the crushing mechanism (4) comprises a crushing frame (40), a first rotating shaft (42), a crushing wheel (43), a first belt pulley (44), a first transmission belt (45), a servo motor (46) and a transmission shaft (47); the crushing frame (40) is arranged on the discharging frame (3), a first rotating shaft (42) is rotatably connected to the middle of the crushing frame (40), and the left side and the right side of the first rotating shaft (42) penetrate through the crushing frame (40); the crushing device is characterized in that a rotatable crushing wheel (43) is connected to the first rotating shaft (42), a servo motor (46) is connected to the rear side of the crushing frame (40), a transmission shaft (47) is connected to an output shaft of the servo motor (46), a first belt pulley (44) is connected to the same side of the first rotating shaft (42) and the same side of the transmission shaft (47), and the servo motor (46) transmits power to the first rotating shaft (42) through a transmission belt (45); nine fixed blocks (41) are connected to the front side and the rear side of the inner wall of the discharging frame (3), and the fixed blocks (41) are located between two adjacent crushing wheels (43);

the feeding mechanism (5) comprises a connecting frame (50), a connecting cover (51), a mounting frame (52), a second rotating shaft (53), a feeding transmission belt (54), a second transmission belt (55) and a second belt pulley (56); the connecting frame (50) is arranged at the top of the crushing frame (40), the top of the connecting frame (50) is connected with a connecting cover (51), the rear side of the connecting cover (51) is connected with a mounting frame (52), the rear part of the connecting cover (51) is rotationally connected with a second rotating shaft (53), the same side of the second rotating shaft (53) and a transmission shaft (47) is connected with a second belt pulley (56), a second transmission belt (55) is wound between the two second belt pulleys (56), and a feeding transmission belt (54) capable of transmitting massive gangue is wound between the second belt pulley (56) above and the mounting frame (52);

the extrusion mechanism (6) comprises a fixed seat (60), a first rotating rod (61), a rotating piece (62), a rotating handle (63), a first torsion spring (64) and a pressing piece (65); the two groups of fixing seats (60) are arranged on the front side of the upper part of the connecting frame (50), the number of the fixing seats (60) in each group is two, the two fixing seats (60) in each group are arranged on the left side and the right side, a first rotating rod (61) is rotationally connected between the two fixing seats (60) in each group, a rotating piece (62) is connected to the first rotating rod (61), a pressing piece (65) is connected between the rear sides of the two rotating pieces (62), a first torsion spring (64) capable of being twisted is connected between the left side and the right side of the lower part of the rotating piece (62) and the fixing seats (60), the first torsion spring (64) is sleeved on the first rotating rod (61), and a rotating handle (63) is connected to the lower side of the rotating piece (62);

the pushing mechanism (7) is used for pushing the rotating handle (63), the pushing mechanism (7) comprises fixing frames (70), guide rods (71), sliding parts (72), springs (73), rotating wheels (74) and cams (75), the cams (75) are connected to the left end and the right end of the first rotating shaft (42), the front side of the lower portion of the crushing frame (40) is connected with two fixing frames (70), the two fixing frames (70) are arranged on the left side and the right side, the guide rods (71) with guide effect are connected to the fixing frames (70), the sliding parts (72) are connected between the two guide rods (71) in a sliding mode, the front sides of the sliding parts (72) are in contact with the rotating handles (63), the rotating wheels (74) are in contact with the cams (75) in a rotating mode, springs (73) with reset effect are connected between the left side and the right side of the front of the sliding parts (72) and the inner walls of the fixing frames (70), and the springs (73) are sleeved on the guide rods (71);

the feeding mechanism (5) is provided with a protection mechanism (8), the protection mechanism (8) comprises a second rotating rod (80), a protection piece (81) and a second torsion spring (82), the second rotating rod (80) is rotationally connected to the upper part of the rear part of the connecting cover (51), the protection piece (81) with a protection effect is connected to the second rotating rod (80), the second torsion springs (82) capable of conducting torsion are connected between the left side and the right side of the protection piece (81) and the inner wall of the connecting cover (51), and the second torsion springs (82) are sleeved on the second rotating rod (80);

the discharging mechanism (9) comprises a rotating shaft (90), a discharging transmission belt (91), a third belt pulley (92) and a third transmission belt (93), wherein the rotating shaft (90) is rotationally connected to the front side and the rear side of the upper portion of the supporting frame (2), the discharging transmission belt (91) is wound between the two rotating shafts (90), the third belt pulley (92) is connected to the left side of the rotating shaft (90) at the rear side, the third belt pulley (92) is also connected to the left side of the first rotating shaft (42), and the third transmission belt (93) is wound between the two third belt pulleys (92).

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