CN109757137B - Vibrating screen type residual film recycling machine convenient to screen cleaning - Google Patents
Vibrating screen type residual film recycling machine convenient to screen cleaning Download PDFInfo
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- CN109757137B CN109757137B CN201910154940.9A CN201910154940A CN109757137B CN 109757137 B CN109757137 B CN 109757137B CN 201910154940 A CN201910154940 A CN 201910154940A CN 109757137 B CN109757137 B CN 109757137B
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Abstract
The invention relates to a vibrating screen type residual film recycling machine convenient for screen cleaning, which belongs to the technical field of agricultural machinery and comprises a rack, a transmission system, a front vibrating arm, a rear cantilever, a digging shovel, a vibrating screen assembly, a film collecting basket, a transition conveying plate and a pair of depth limiting wheels, wherein the vibrating screen assembly comprises a main screen part, a hinge and a movable screen part which is rotationally connected with the main screen part through the hinge, the movable screen part can be folded and separated with the main screen part around the hinge, and the vibrating screen assembly is matched with a limiting locking mechanism which locks the main screen part and the movable screen part together when the main screen part and the movable screen part are folded. The vibrating screen assembly is divided into a main screen part and a movable screen part which can rotate relatively, and the main screen part and the movable screen part can be separated from each other when rotating relatively to increase the clearance between the screen pieces, so that blockage can be cleaned conveniently.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a vibrating screen type residual film recycling machine convenient for cleaning a screen.
Background
The mulching film has the functions of improving the ground temperature, preserving the soil moisture, improving the physical and chemical properties of the soil, inhibiting weeds, improving the fertility and the like, and is one of the most effective means for improving the crop yield at present.
The mulching film coverage has remarkable yield increasing effect, the using amount and the application area of the mulching film are continuously increased, and the mulching film coverage technology is popularized and applied nationwide. In 1982, the usage amount of the mulching film in China is 0.6 ten thousand tons, and the mulching area of the mulching film is 175 ten thousand mu; in 2014, the usage amount of the mulching film in China is about 142 million tons, the coverage area is about 3.8 hundred million acres, and the usage amount and the coverage area of the mulching film are increased by more than 200 times.
The use of the mulching film in a large amount brings the effects of increasing both production and income for farmers and also causes serious pollution to agricultural production and ecological environment. The literature shows that all the mulching film mulching fields have residual mulching films with different degrees, and the residual mulching film amount in the soil of the long-term mulching field is generally 4.5-17.3 kg/mu. A large amount of residual mulching films in the field cause a series of problems of soil fertility reduction, crop yield reduction, incapability of forage utilization of straws and the like, so that the mulching film pollution needs to be treated urgently.
Because the foreign agricultural mulching film is thick (generally more than 0.012 mm), high in strength and toughness and can be continuously used for 2-3 years, the recovery equipment mechanism is relatively simple and is generally a film-rolling type residual film recovery machine.
At present, the residual film recovery mode in China mainly comprises two modes of manual picking and mechanical recovery. The labor intensity of manually picking up the residual film is high, the efficiency is low, and the mechanical recovery is the main development trend.
In China, residual film recycling machinery is researched from 80 years, and various types of residual film recycling machines are developed at present, mainly comprising a vibrating screen type residual film recycling machine, a rake tooth type residual film recycling machine, a net chain type residual film recycling machine, an air suction type residual film recycling machine and the like. The vibrating screen type residual film recycling machine has the advantages of wide adaptability, capability of recycling broken films and whole films, good soil cleaning effect and the like, and is widely applied to the field of mechanized residual film recycling. The residual film recycling machine comprises a frame, a transmission system, a front vibration arm, a rear cantilever, a digging shovel, a vibrating screen assembly, a film collecting basket and a pair of depth wheels. The frame is connected with a four-wheel tractor through a three-point suspension, the power of a transmission system is provided by a tractor rear power output shaft (PTO) or a belt, the transmission system drives a front vibrating arm, and under the supporting action of a rear cantilever, a vibrating screen assembly reciprocates back and forth to throw and convey residual films, soil, impurities and the like which are shoveled by a digging shovel backwards and upwards, in the vibrating throwing process, under the screening action of the vibrating screen assembly, the impurities such as soil, stones and the like fall to the ground surface, and the residual films are pushed to a film collecting basket. However, when the vibrating screen is in work, impurities such as soil blocks and small stones can be clamped between the vibrating screen bars, the screen surface is blocked, the soil cleaning function of the screen surface is reduced, and when the blockage is serious, the screen surface can completely lose membrane soil separation capacity, so that the vibrating screen residual membrane type recycling machine needs to be stopped frequently to clean the screen surface manually, and the operation efficiency of machines is influenced.
Disclosure of Invention
The invention aims to provide a vibrating screen type residual film recycling machine convenient for cleaning, which divides a vibrating screen assembly into a main screen part and a movable screen part which can rotate relatively, and the main screen part and the movable screen part can be separated from each other when rotating relatively to increase blanking gaps, so that impurities can be removed conveniently.
The purpose of the invention is realized as follows: a vibrating screen type residual film recycling machine convenient for cleaning comprises a rack, a digging shovel, a vibrating screen assembly, a transition conveying plate and a film collecting basket for collecting residual films, wherein the rack is connected with a tractor, the digging shovel is arranged at the front end of the rack, the film collecting basket is installed on the rack and is right opposite to the rear side of the vibrating screen assembly, the vibrating screen assembly comprises a main screen part, a hinge and a movable screen part which is rotatably connected with the main screen part through the hinge, the movable screen part can be folded and separated with the main screen part around the hinge, and the vibrating screen assembly is matched with a limiting locking mechanism which locks the main screen part and the movable screen part together when the main screen part and the movable screen part are folded;
the main screen component comprises an inclined main screen frame and a plurality of main screen sawtooth screen sheets, the main screen frame is of a square frame structure, the front end of the main screen frame is the lowest end of the main screen frame, the rear end of the main screen frame is the highest end and is just opposite to an opening of the membrane collecting basket, the main screen sawtooth screen sheets are equidistantly and parallelly arranged in the frame of the main screen frame along the width direction of the tractor, the main screen sawtooth screen sheets extend from front to back and have tooth surfaces facing upwards, and the transition conveying plate is arranged at the front end of the main screen frame and is positioned at the rear side of the digging shovel;
the movable screen component comprises a movable screen frame and a plurality of movable screen sawtooth screen sheets, the movable screen frame is of a square frame type structure, the movable screen sawtooth screen sheets are equidistantly and parallelly arranged in a frame of the movable screen frame along the width direction of the tractor, the movable screen sawtooth screen sheets extend from front to back, and tooth surfaces of the movable screen sawtooth screen sheets face upwards;
the hinge is set as a shaft part transversely extending along the width direction of the tractor, the front side of the movable sieve frame is rotatably connected with the upper part of the front end of the main sieve frame through the hinge, and the hinge is positioned behind the transition conveying plate and close to the transition conveying plate;
the interval between any two adjacent movable sieve sawtooth sieve sheets is equal to the interval between any two adjacent main sieve sawtooth sieve sheets, when the movable sieve component and the main sieve component are folded, the main sieve sawtooth sieve sheets and the movable sieve sawtooth sieve sheets are staggered and arranged to form a plurality of blanking gaps uniformly distributed along the width direction of the tractor, the blanking gaps are half of the interval between any two adjacent movable sieve sawtooth sieve sheets or two main sieve sawtooth sieve sheets, and when the movable sieve component and the main sieve component are separated, the main sieve sawtooth sieve sheets and the movable sieve sawtooth sieve sheets are staggered and separated from each other;
the limiting locking mechanism comprises a hydraulic cylinder, a rotating fulcrum shaft, a tension spring and a locking plate in the shape of a long rod sickle, the locking plate is rotationally connected with the side wall frame of the movable sieve frame through a rotating fulcrum, the upper section of the locking plate corresponding to the rotating fulcrum is a straight rod, the upper end of the upper section is pulled backwards by a tension spring and fixed on the side wall frame of the movable sieve frame, the upper end of the upper section is flexibly connected with a piston rod of a hydraulic cylinder through a metal chain, the cylinder barrel part of the hydraulic cylinder is rotationally connected to the frame, the upper end of the upper section is pulled or released upwards by the hydraulic cylinder, the lower section of the locking plate on the rotating fulcrum is a straight-line rod, and the tail end of the lower part of the lower section is provided with a hook with a forward opening, a lower limiting pin is arranged on the side wall of the main sieve frame, and falls into the concave part of the hook when the movable sieve frame and the main sieve frame are in a closed state;
a middle limiting pin below the rotating fulcrum is arranged on the side wall frame of the movable sieve frame, and the lower section of the locking plate is just propped against the middle limiting pin when the movable sieve frame and the main sieve frame are in a folded state.
Further, spacing locking mechanism still includes tension adjusting lever, adjusts the pole mounting panel, it fixes on the lateral wall frame of movable bank of screens to adjust the pole mounting panel, tension adjusting lever rotates to be connected on adjusting the pole mounting panel, tension adjusting lever front end is connected with the top section through the extension spring.
Furthermore, the rear end of the main sieve frame is provided with a rear limiting plate, the rear end of the movable sieve frame is provided with a downward convex movable sieve limiting part, and the movable sieve limiting part abuts against the rear end of the rear limiting plate when the movable sieve part and the main sieve part are closed.
Further, side limiting plates for limiting the position of the movable sieve frame are mounted on two sides of the main sieve frame.
Furthermore, a pair of limiting locking mechanisms is arranged, and the two limiting locking mechanisms are respectively positioned on the left side and the right side of the vibrating screen assembly.
Further, the lower limit pin is close to the rear end of the main screen frame.
Further, the lower limit pin is of a round pin structure, and the concave structure of the hook is matched with the outer peripheral surface structure of the lower limit pin.
The invention has the beneficial effects that: firstly, because the vibrating screen assembly consists of a main screen part, a hinge and a movable screen part which is longitudinally and rotatably connected with the main screen part through the hinge, when impurities such as soil blocks, stones and the like are clamped between the screen pieces, the movable screen part performs relative rotation action around the main screen part to separate the movable screen sawtooth screen piece of the movable screen part from the main screen sawtooth screen piece, so that gaps between the movable screen sawtooth screen piece and the main screen sawtooth screen piece are simultaneously enlarged and are twice of blanking gaps in the original folding state, then the soil blocks and stones accumulated between the movable screen sawtooth screen piece and the main screen sawtooth screen piece can smoothly fall to the ground surface through the enlarged gaps, manual cleaning is not needed, and the membrane soil separation capability and the operation efficiency of the machine are obviously improved; the vibrating screen assembly is provided with a limiting locking mechanism, locking and unlocking actions are driven only by the stretching of the hydraulic cylinder, operation is convenient, when the screen is cleaned, a piston rod of the hydraulic cylinder drives the locking plate to overcome the elasticity of the tension spring to rotate through a traction metal chain, so that the locking plate is in an automatic unlocking state, and meanwhile, elastic potential energy is accumulated by the tension spring; when resetting, as long as the traction force of pneumatic cylinder is unloaded, extension spring release elastic potential energy produces the elastic restoring force that acts on the unblock end of lock plate, and the lock plate rotates under the elastic restoring force effect of extension spring for the crotch of lock plate catches on down the spacer pin, thereby accomplishes the locking operation to movable sieve part and main sieve part, and the vibration that produces when preventing to use causes the random of movable sieve part to beat.
Drawings
FIG. 1 is an overall assembly diagram of the present invention.
Fig. 2 is a top view of fig. 1.
FIG. 3 is a side view of a shaker assembly and limit lock mechanism.
Fig. 4 is a left side view in fig. 3.
FIG. 5 is a schematic view of the movable screen section and the main screen section in a separated state.
Fig. 6 is a left side view in fig. 5.
Figure 7 is a schematic perspective view of the movable screen section and the main screen section in a separated state.
Fig. 8 is a schematic structural diagram of a limit locking mechanism.
In the figure, 1 machine frame, 2 transmission system, 3 front vibration arm, 4 rear cantilever, 5 depth wheel, 6 digging shovel, 7 vibration screen assembly, 71 movable screen component, 7101 movable screen frame, 7101a movable screen limiting part, 7102 movable screen sawtooth screen sheet, 72 main screen component, 7201 main screen frame, 7202 main screen sawtooth screen sheet, 7203 side limiting plate, 7204 rear limiting plate, 73 hinge, 8 limiting locking mechanism, 801 locking plate, 801a upper section, 801b lower section, 801c bent hook, 802 rotation fulcrum shaft, 803 lower limiting pin, 804 limiting pin, 805 tension spring, 806 tension adjusting rod, 807 adjusting rod, 9 hydraulic cylinder, 10 metal chain, 11 film collecting basket, 12 gap, 13 transition conveying plate.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in fig. 1-8, a vibrating screen type plastic film residue recycling machine convenient for cleaning comprises a frame 1, a transmission system 2, a front vibrating arm 3, a rear suspension arm 4, a digging shovel 6, a vibrating screen assembly 7, a film collecting basket 11, a transition conveying plate 13 and a pair of depth wheels 5. The excavating shovel 6 is arranged at the front end of the frame 1, the film collecting basket 11 is installed on the frame 1 and is right opposite to the rear side of the vibrating screen assembly 7, the frame 1 is connected with a four-wheel tractor through three-point suspension, power of the transmission system 2 is provided by a tractor rear power output shaft (PTO) or a belt, the transmission system 2 drives the front vibrating arm 3, the vibrating screen assembly 7 is made to reciprocate back and forth under the supporting effect of a rear cantilever 4, residual films, soil impurities and the like shoveled by the excavating shovel 6 are thrown backwards and upwards, in the vibrating throwing process, under the screening effect of the vibrating screen assembly 7, the impurities such as soil and stones fall to the ground surface, and the residual films are pushed to the film collecting basket 11.
The vibrating screen assembly 7 comprises a main screen part 72, a hinge 73 and a movable screen part 71 which is rotatably connected with the main screen part 72 through the hinge 73, wherein the movable screen part 71 can be folded and separated with the main screen part 72 around the hinge 73, and the vibrating screen assembly 7 is matched with a limit locking mechanism 8 which locks the main screen part 72 and the movable screen part 71 together when the main screen part 72 and the movable screen part 71 are folded.
Above-mentioned main sieve part 72 is including the main sieve frame 7201 of slope to and a plurality of main sieve sawtooth sieve piece 7202, main sieve frame 7201 is square frame formula structure, main sieve frame 7201 front end is the least significant end of main sieve frame 7201, above-mentioned a plurality of main sieve sawtooth sieve pieces 7202 are in the frame of main sieve frame 7201 along tractor width direction equidistance parallel arrangement, main sieve sawtooth sieve piece 7202 is by preceding extension backward and its flank of tooth up, transition delivery plate 13 is installed at main sieve frame 7201 front end and is in the rear side of digging shovel 6.
The movable screen component 71 comprises a movable screen frame 7101 and a plurality of movable screen sawtooth screen sheets 7102, the movable screen frame 7101 is of a square frame type structure, the movable screen sawtooth screen sheets 7102 are arranged in the frame of the movable screen frame 7101 in parallel at equal intervals along the width direction of the tractor, and the movable screen sawtooth screen sheets 7102 extend from front to back with the tooth surfaces thereof facing upwards.
The hinge 73 is a shaft part extending transversely along the width direction of the tractor, the front side of the movable screen frame 7101 is connected with the upper part of the front end of the main screen frame 7201 in a vertical rotating mode through the hinge 73, and the hinge 73 is located behind the transition conveying plate 13 and close to the transition conveying plate 13. The transition conveying plate 13 is used for smoothly guiding and conveying the materials shoveled by the digging shovel 6 to the vibrating screen assembly 7, and when a specific project is implemented, the installation position and the angle of the transition conveying plate 13 need to be set through special calculation, namely, when the movable screen part 71 rotates, the movable screen part 71 cannot interfere with the transition conveying plate 13, if the angle of the transition conveying plate 13 is too large, the materials are conveyed smoothly, and if the angle of the transition conveying plate 13 is too small, the movable screen part 71 interferes with the movable screen part 71.
The distance between any two adjacent movable screen sawtooth screen sheets 7102 is equal to the distance between any two adjacent main screen sawtooth screen sheets 7202, when the movable screen part 71 and the main screen part 72 are folded, the main screen sawtooth screen sheets 7202 and the movable screen sawtooth screen sheets 7102 are arranged in a staggered and alternate mode to form a plurality of blanking gaps 12 uniformly distributed in the width direction of the tractor, the blanking gaps 12 are half of the distance between any two adjacent movable screen sawtooth screen sheets 7102 or two main screen sawtooth screen sheets 7202, and when the movable screen part 71 and the main screen part 72 are separated, the main screen sawtooth screen sheets 7202 and the movable screen sawtooth screen sheets 7102 are mutually staggered and separated.
The limit locking mechanism 8 comprises a hydraulic cylinder 9, a rotating fulcrum 802, a tension spring 805, a locking plate 801 in a long rod sickle shape, the locking plate 801 is rotatably connected with a side wall frame of the movable sieve frame 7101 through the rotating fulcrum 802, an upper section 801a of the locking plate 801 corresponding to the rotating fulcrum 802 is a straight rod, the upper end of the upper section 801a is pulled and fixed on the side wall frame of the movable sieve frame 7101 by the tension spring 805, the upper end of the upper section 801a is flexibly connected with a piston rod of the hydraulic cylinder 9 through a metal chain 10, a cylinder part of the hydraulic cylinder 9 is rotatably connected on the frame 1, the upper end of the upper section 801a is pulled or released upwards and forwards by the hydraulic cylinder 9, the locking plate 801 is a section of a straight rod at a lower section 801b of the rotating fulcrum 802, the lower end of the lower section 801b is provided with a bent hook 801c with a forward opening, a lower limit pin 803 is arranged on the side wall of the main sieve frame 7201, and the lower limit pin 803 falls into a concave part of the bent hook 801c when the movable sieve frame 7101 and the main sieve frame 7201 are folded, the lower stopper pin 803 has a round pin structure, and the recessed structure of the hook 801c is adapted to the outer peripheral surface structure of the lower stopper pin 803. The hook 801c has a profile which is specially designed to ensure that the hook 801c is pushed rearwardly by the lower limit pin 803 as the movable screen part 71 falls, so that the lower limit pin 803 falls into the recess of the hook 801 c.
A middle stopper pin 804 below the pivot shaft 802 is provided on the side wall frame of the movable screen frame 7101, and the lower section 801b of the lock plate 801 abuts against the middle stopper pin 804 when the movable screen frame 7101 and the main screen frame 7201 are in a closed state.
The limiting locking mechanism 8 further comprises a tension adjusting rod 806 and an adjusting rod mounting plate 807, the adjusting rod mounting plate 807 is fixed on a side wall frame of the movable screen frame 7101, the tension adjusting rod 806 is rotatably connected to the adjusting rod mounting plate 807, and the front end of the tension adjusting rod 806 is connected with the upper section 801a through a tension spring 805.
The rear end of the main screen frame 7201 is provided with a rear limiting plate 7204, the rear end of the movable screen frame 7101 is provided with a downward convex movable screen limiting part 7101a, and the movable screen limiting part 7101a abuts against the rear end of the rear limiting plate 7204 when the movable screen part 71 and the main screen part 72 are folded, so that the positioning effect when the movable screen part 71 and the main screen part 72 are folded can be improved.
The two limiting locking mechanisms 8 are respectively arranged at the left side and the right side of the vibrating screen assembly 7.
The lower limit pin 803 is located near the rear end of the main screen frame 7201.
When the metal chain 10 is tensioned by the hydraulic cylinder 9 and the tensioning force is larger than that of the tension spring 805 during cleaning, the locking plate 801 rotates around the rotating fulcrum shaft 802 and is separated from the lower limiting pin 803, and the movable screen frame 7101 can rotate around the hinge 73; after the screen is cleaned, the movable screen frame 7101 starts to fall under the action of self gravity, at the moment, the locking plate 801 is still pulled by the metal chain 10, the locking plate 801 is always in an open state until the movable screen frame 7101 completely returns, the locking plate 801 hooks the lower limit pin 803, and the complete locking of the upper and lower positions of the main screen frame 7201 and the movable screen frame 7101 is realized.
The main function of the middle limit pin 804 is to prevent the movable screen frame 7101 from being unsettled, and the specific principle is as follows: when the movable screen frame 7101 rapidly falls down, if the tension force arm applied to the locking plate 801 by the metal chain 10 is smaller than the tension force arm applied to the locking plate 801 by the tension spring 805, a phenomenon of excessive rotation due to an excessively large clockwise rotation angle of the locking plate 801 may be caused, that is, when the movable screen frame 7101 has not rotated to a position where the movable screen frame 7201 is folded, the rotation angle of the locking plate 801 is excessively large, so that an outer edge of a hook 801c of the locking plate 801 collides with the lower limit pin 803 when the movable screen frame 7101 rotates downward, the position interference between the locking plate 801 and the lower limit pin 803 is caused, the movable screen frame 7101 cannot be reset, and the movable screen frame 7101 cannot be folded with the main screen frame 7201. The middle limit pin 804 effectively avoids the above situation, and can well limit the rotation angle of the locking plate 801, so that the movable screen frame 7101 can be smoothly folded with the main screen frame 7201.
The movable screen part 71 and the main screen part 72 are in use first in a closed position and, after a period of operation, soil blocks and small stone blocks are easily clamped between the blanking gaps 12, so that the screening area is reduced, and at the moment, the metal chain 10 is pulled by the contraction of the piston rod of the hydraulic cylinder 9, so that the limit locking mechanism 8 is opened, at the same time of opening the limit locking mechanism 8, the whole vibrating screen assembly 7 is lifted, so that the movable screen frame 7101 rotates around the hinge 73, the main sieve sawtooth screen pieces 7202 and the movable sieve sawtooth screen pieces 7102 are staggered and separated from each other, the original blanking gaps 12 become gaps between the main sieve sawtooth screen pieces 7202 or the movable sieve sawtooth screen pieces 7102, which is equivalent to increase the gaps for blanking, so that impurities such as soil blocks, small stone blocks and the like clamped between the main sieve sawtooth screen pieces 7202 and the movable sieve sawtooth screen pieces 7102 fall to the ground surface from the increased gaps, and the sieve cleaning function is realized; then, by extending the piston rod of the hydraulic cylinder 9, the metal chain 10 is loosened, the movable screen frame 7101 is rotated and reset downwards around the hinge 73, the limit locking mechanism 8 locks the up-and-down positions of the main screen frame 7201 and the movable screen frame 7101, the side limit plates 7203 arranged on the left and right sides of the main screen frame 7201 limit the left-and-right position of the movable screen frame 7101, and the rear limit plates 7204 limit the front-and-rear position of the movable screen frame 7101, so that the whole screen cleaning action is completed.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a shale shaker formula plastic film residue collector convenient to clear sieve, includes frame (1), digger blade (6), shale shaker assembly (7), transition delivery board (13), collection membrane basket (11) for collecting the plastic film residue, frame (1) is connected with the tractor, digger blade (6) set up the front end in frame (1), collection membrane basket (11) are installed in frame (1) and just to the rear side of shale shaker assembly (7), its characterized in that: the vibrating screen assembly (7) comprises a main screen part (72), a hinge (73) and a movable screen part (71) which is rotatably connected with the main screen part (72) through the hinge (73), the movable screen part (71) can be folded and separated with the main screen part (72) around the hinge (73), and the vibrating screen assembly (7) is matched with a limit locking mechanism (8) which locks the main screen part (72) and the movable screen part (71) together when the main screen part (72) is folded with the movable screen part (71);
the main sieve component (72) comprises an inclined main sieve frame (7201) and a plurality of main sieve sawtooth sieve sheets (7202), the main sieve frame (7201) is of a square frame structure, the front end of the main sieve frame (7201) is the lowest end of the main sieve frame (7201), the rear end of the main sieve frame (7201) is the highest end and is just opposite to an opening of the membrane collecting basket (11), the main sieve sawtooth sieve sheets (7202) are equidistantly and parallelly arranged in a frame of the main sieve frame (7201) along the width direction of the tractor, the main sieve sawtooth sieve sheets (7202) extend from front to back and have tooth surfaces facing upwards, and the transition conveying plate (13) is arranged at the front end of the main sieve frame (7201) and is positioned at the rear side of the excavating shovel (6);
the movable sieve component (71) comprises a movable sieve frame (7101) and a plurality of movable sieve sawtooth sieve sheets (7102), the movable sieve frame (7101) is of a square frame type structure, the movable sieve sawtooth sieve sheets (7102) are arranged in the frame of the movable sieve frame (7101) in parallel at equal intervals along the width direction of the tractor, and the movable sieve sawtooth sieve sheets (7102) extend from front to back with the tooth surfaces thereof facing upwards;
the hinge (73) is arranged to be a shaft part transversely extending along the width direction of the tractor, the front side of the movable sieve frame (7101) is rotatably connected with the upper part of the front end of the main sieve frame (7201) through the hinge (73), and the hinge (73) is positioned behind the transition conveying plate (13) and close to the transition conveying plate (13);
the distance between any two adjacent movable sieve sawtooth screen sheets (7102) is equal to the distance between any two adjacent main sieve sawtooth screen sheets (7202), when the movable sieve component (71) is folded with the main sieve component (72), the main sieve sawtooth screen sheets (7202) and the movable sieve sawtooth screen sheets (7102) are arranged in a staggered and alternate mode to form a plurality of blanking gaps (12) uniformly distributed along the width direction of the tractor, the blanking gaps (12) are half of the distance between any two adjacent movable sieve sawtooth screen sheets (7102) or half of the distance between two main sieve sawtooth screen sheets (7202), and when the movable sieve component (71) is separated from the main sieve component (72), the main sieve sawtooth screen sheets (7202) and the movable sieve sawtooth screen sheets (7102) are mutually staggered and separated;
the limiting locking mechanism (8) comprises a hydraulic cylinder (9), a rotating fulcrum shaft (802), a tension spring (805) and a locking plate (801) in a long-rod sickle shape, the locking plate (801) is rotatably connected with a side wall frame of the movable sieve frame (7101) through the rotating fulcrum shaft (802), an upper section (801 a) of the locking plate (801) corresponding to the rotating fulcrum shaft (802) is a straight rod, the upper end of the upper section (801 a) is pulled backwards through the tension spring (805) and fixed on the side wall frame of the movable sieve frame (7101), the upper end of the upper section (801 a) is flexibly connected with a piston rod of the hydraulic cylinder (9) through a metal chain (10), a cylinder barrel part of the hydraulic cylinder (9) is rotatably connected onto the rack (1), the upper end of the upper section (801 a) is pulled or released towards the front upper side through the hydraulic cylinder (9), and a straight section (801 b) of the locking plate (801) below the rotating fulcrum shaft (802) is a section (801 b) which is a section bar, a hook (801 c) with a forward opening is arranged at the tail end of the lower part of the lower section (801 b), a lower limiting pin (803) is arranged on the side wall of the main sieve frame (7201), and the lower limiting pin (803) falls into a concave part of the hook (801 c) when the movable sieve frame (7101) and the main sieve frame (7201) are in a folded state;
a middle limit pin (804) which is positioned below the rotating fulcrum shaft (802) is arranged on a side wall frame of the movable sieve frame (7101), and a lower section (801 b) of the locking plate (801) is just propped against the middle limit pin (804) when the movable sieve frame (7101) and the main sieve frame (7201) are in a folded state.
2. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: the limiting locking mechanism (8) further comprises a tension adjusting rod (806) and an adjusting rod mounting plate (807), the adjusting rod mounting plate (807) is fixed on a side wall frame of the movable screen frame (7101), the tension adjusting rod (806) is rotatably connected to the adjusting rod mounting plate (807), and the front end of the tension adjusting rod (806) is connected with the upper section (801 a) through a tension spring (805).
3. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: the rear end of main sieve frame (7201) is equipped with back spacing board (7204), the rear end of movable sieve frame (7101) is equipped with spacing portion of movable sieve (7101 a) to the downward-convex, spacing portion of movable sieve (7101 a) supports back spacing board (7204) rear end when movable sieve part (71) folds with main sieve part (72).
4. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: and side limiting plates (7203) used for limiting the position of the movable screen frame (7101) are arranged on two sides of the main screen frame (7201).
5. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: the two limiting locking mechanisms (8) are arranged in a pair, and the two limiting locking mechanisms (8) are respectively arranged on the left side and the right side of the vibrating screen assembly (7).
6. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: the lower limit pin (803) is near the rear end of the main screen frame (7201).
7. The vibrating screen type residual film recycling machine convenient for cleaning of the screen of claim 1, which is characterized in that: the lower limit pin (803) is of a round pin structure, and the concave structure of the hook (801 c) is matched with the outer peripheral surface structure of the lower limit pin (803).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154940.9A CN109757137B (en) | 2019-03-01 | 2019-03-01 | Vibrating screen type residual film recycling machine convenient to screen cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154940.9A CN109757137B (en) | 2019-03-01 | 2019-03-01 | Vibrating screen type residual film recycling machine convenient to screen cleaning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109757137A CN109757137A (en) | 2019-05-17 |
| CN109757137B true CN109757137B (en) | 2021-11-19 |
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| CN110613152B (en) * | 2019-09-09 | 2023-12-15 | 农业农村部南京农业机械化研究所 | Low-temperature mixed-flow circulation peanut dryer and drying method thereof |
| CN113906844B (en) * | 2021-12-13 | 2022-02-25 | 烟台常丰林业开发有限公司 | Forestry is grown seedlings and is used disease and pest control device |
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