CN112845040A

CN112845040A - Wheat screening mechanism for agricultural machinery

Info

Publication number: CN112845040A
Application number: CN202011555552.0A
Authority: CN
Inventors: 郁志华
Original assignee: Dongtai Xinfuda Machinery Co ltd
Current assignee: Dongtai Xinfuda Machinery Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of mechanical equipment, and discloses a wheat screening mechanism for agricultural machinery, which comprises a base, a support, a screen and a feeding hole, wherein the support is arranged on the base; a group of transverse sieve cylinders with a circular truncated cone-shaped structure are arranged in the middle of the left and right lifting plates, transverse rotating shafts are fixedly connected to the middle of the left and right side walls of each sieve cylinder, vertical sliding openings which penetrate left and right are formed in the middle of the lifting plates, a group of lifting blocks are slidably connected to the middle of each sliding opening, and a group of rotating rods are rotatably connected to the right end of each rotating shaft downwards through a driving belt; the screen cloth is arranged right below the screen drum, a group of moving blocks are fixedly mounted on the left side of the bottom of the screen cloth, a group of transverse supporting plates are arranged on the lower sides of the moving blocks, moving grooves which penetrate through the screen cloth are formed in the left side of the inner portions of the supporting plates in a front-back mode, the moving blocks are connected to the moving grooves in a sliding mode, a group of sleeve columns are fixedly mounted on the front side walls of the moving blocks, and a group of transmission rods are rotatably connected to the lower portions.

Description

Wheat screening mechanism for agricultural machinery

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a wheat screening mechanism for agricultural machinery.

Background

The wheat screening mechanism can rapidly screen wheat particles, so that shells and sundries coated outside the wheat particles can be rapidly removed, impurities mixed in the wheat can be removed, and subsequent reprocessing is facilitated.

Current wheat screening mechanism, it is general to be provided with individual layer or multilayer combined structure, thereby with wheat according to the impurity particle size that contains, carry out multistage separation screening processing, but most screening mechanism all is simple separates the setting from top to bottom with the screen cloth, then utilize power device to carry out simple rocking with the screen cloth, thereby sieve, the problem of existence has, to some impurity that are difficult to the screening that contain in the wheat, only simple rocking, can't carry out accurate screening, the motion dynamics of screen cloth is little, lead to that screening speed is slow and the precision is low.

Disclosure of Invention

The invention aims to provide a wheat screening mechanism for agricultural machinery, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a wheat screening mechanism for agricultural machinery comprises a base, a support, a screen and a feeding hole; the left side and the right side of the top of the base are fixedly provided with two groups of supports with inverted L-shaped structures, the tail ends of the supports are fixedly provided with vertical lifting plates through connecting blocks, the middle parts of the left lifting plate and the right lifting plate are provided with a group of transverse sieve cylinders with circular truncated cone-shaped structures, the middle parts of the left side wall and the right side wall of each sieve cylinder are fixedly connected with transverse rotating shafts, the middle parts of the lifting plates are provided with vertical sliding ports which penetrate left and right, the middle parts of the sliding ports are connected with a group of lifting blocks in a sliding manner, the rotating shafts on the left side and the right side are fixedly connected onto the lifting blocks, the upper side and the lower side of each lifting block are elastically connected onto the upper inner wall and the lower inner wall of each sliding port through springs, the tail ends of the rotating shafts on the right side penetrate the lifting blocks rightwards, the right, the dwang is driven to rotate by starting the servo motor, then the rotation shaft is driven to rotate under the connection of the transmission belt, and then the wheat inside the sieve drum is driven by the sieve drum to be subjected to rolling screening. The up-and-down looseness degree of the transmission belt does not influence the normal transmission connection of the transmission belt within the range of the up-and-down movement of the lifting block.

A group of screen meshes are arranged right below the screen drum, a group of moving blocks are fixedly arranged on the left side of the bottom of the screen meshes, a group of transverse supporting plates are arranged on the lower sides of the moving blocks, moving grooves which penetrate through the moving grooves are formed in the left sides of the insides of the supporting plates, the moving blocks are connected to the moving grooves in a sliding mode, a group of sleeve columns are fixedly arranged on the front side walls of the moving blocks, a group of transmission rods are rotatably connected to the lower portions of the right sides of the supporting plates, a group of connecting plates are rotatably connected to the tail ends of the transmission rods, a group of driven helical teeth are rotatably connected to the tail ends of the connecting plates upwards through transmission belts, a group of driving helical teeth fixed on a rotating rod on the left side of a servo motor are meshed to the right sides of the driven helical teeth, when, then the whole screen cloth is driven to move left and right, and because the screen cloth is positioned below the screen drum, the wheat falling through the screening of the screen drum falls into the screen cloth, and then the wheat is subjected to left and right shaking screening through the screen cloth.

As a further scheme of the invention: the top left side of a screen drum is provided with a feed inlet, and the feed inlet is hinged with a cover plate.

As a further scheme of the invention: drive belt left side and the right side between the elevator right side fixed mounting has a set of board of dialling on the axis of rotation, on dial on the dwang of board under on fixed mounting have a set of with dial the board down of mutually supporting contact promotion on, because the axis of rotation passes through the drive belt rotation with the dwang and is connected, the direction of rotation of the two is unanimous, consequently when rotatory week, dial on the board and dial down the board and can contact once, because the dwang is in fixed state, consequently dial under the promotion of board down, can be with the axis of rotation together with elevator rebound one section distance, thereby make a sieve section of thick bamboo when rotatory, carry out one section and reciprocate, thereby increase the inside orientation of rocking when sieving wheat of a sieve section of thick bamboo.

As a further scheme of the invention: the left side and the right side of the moving block are elastically connected to the left inner wall and the right inner wall of the moving groove through two groups of springs.

As a further scheme of the invention: and the right side transmission belt of the screen is provided with a notch which is convenient for the screen to move left and right and does not contact the transmission belt.

As a still further scheme of the invention: the bottom front and back side below slant of screen cloth is provided with the lower flitch of two sets of symmetries outward, and the length of lower flitch is equated with the maximum displacement distance when rocking about the screen cloth, and the bottom of lower flitch is connected with the groove that gathers materials of rectangle structure, sets up to the closure state on the screen cloth between two sets of lower flitch tops, prevents that the wheat of the inside screening of screen cloth from dropping downwards through the middle part of two sets of lower flitchs.

Compared with the prior art, the invention has the beneficial effects that: the rotary shaft is driven to drive the screen drum to rotate by arranging a group of servo motors through the rotary connection action of the upper and lower groups of transmission belts, then the moving block is driven to drive the screen to move left and right through the connecting plate and the transmission rod, so that the wheat is screened in a rolling mode, and then the wheat is shaken left and right through the screen, so that the wheat can be screened in a multi-direction moving mode;

the upper shifting plate is arranged on the rotating shaft, the lower shifting plate is arranged on the rotating rod on the lower side of the upper shifting plate, and then the upper shifting plate and the lower shifting plate are controlled to be contacted in a circulating and intermittent mode by utilizing the driving rotation of the servo motor, so that the screen drum is controlled to be pushed to move up and down, and the shaking screening in the up-and-down direction is increased when the screen drum is used for rolling screening wheat;

through setting up a set of servo motor simultaneous drive sieve section of thick bamboo rotatory, reciprocate and the screen cloth of bottom is controlled from side to very big improvement servo motor's availability factor.

Drawings

Fig. 1 is an external perspective view of a wheat sifting mechanism for agricultural machinery.

Fig. 2 is a rear view structural schematic diagram of a wheat screening mechanism for agricultural machinery.

Fig. 3 is a schematic top view of a wheat sifting mechanism for an agricultural machine.

Fig. 4 is a schematic structural view of a material collecting groove in a wheat screening mechanism for agricultural machinery.

Wherein: the screen comprises a base 10, a support 11, a screen 12, a lifting plate 13, a screen cylinder 14, a feeding hole 15, a sliding opening 16, a lifting block 17, a rotating shaft 18, an upper shifting plate 19, a lower shifting plate 20, driving helical teeth 21, driven helical teeth 22, a servo motor 23, a driving belt 24, a connecting plate 25, a transmission rod 26, a supporting plate 27, a moving groove 28, a moving block 29, a spring 30, a blanking plate 31, a material collecting groove 32 and a sleeve column 33.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example one

Referring to fig. 1-3, a wheat screening mechanism for agricultural machinery includes a base 10, a support 11, a screen 12, and a feed inlet 15; the utility model discloses a sieve, including base 10, support 11, connecting block 13, two sets of round platform shape structures of inverting L type structures, support 11's end is provided with vertical lifter plate 13 through connecting block fixed mounting about the top left and right sides fixed mounting of base 10, and the middle part of controlling two sets of lifter plate 13 is provided with a set of horizontal sieve section of thick bamboo 14 of round platform shape structure, and the top left side of sieve section of thick bamboo 14 has been seted up feed inlet 15 and has articulated on the feed inlet 15 to. The middle parts of the left and right side walls of the screen drum 14 are fixedly connected with a transverse rotating shaft 18, the middle part of the lifting plate 13 is provided with a vertical sliding port 16 which penetrates left and right, the middle part of the sliding port 16 is connected with a group of lifting blocks 17 in a sliding way, the rotating shafts 18 on the left and right sides are fixedly connected to the lifting blocks 17, the upper side and the lower side of the lifting block 17 are elastically connected on the upper inner wall and the lower inner wall of the sliding opening 16 through springs 30, the tail end of the rotating shaft 18 positioned on the right side penetrates through the lifting block 17 rightwards, the right end of the rotating shaft 18 is downwards rotatably connected with a group of rotating rods through a transmission belt 24, the left end of each rotating rod is rotatably connected on a connecting block at the bottom of the right lifting plate 13 through a bearing, the right end of each rotating rod is rotatably connected with a group of servo motors 23, and the rotating rods are driven to rotate by, then the rotating shaft 18 is driven to rotate under the connection of the driving belt 24, and the screening drum 14 is driven to carry out rolling screening on the wheat inside the screening drum 14. The up-and-down looseness degree of the transmission belt 24 does not influence the normal transmission connection of the transmission belt 24 within the range of the up-and-down movement of the lifting block 17.

Drive belt 24 left side and the right side between the elevator 17 right side fixed mounting has a set of board 19 of dialling on the axis of rotation 18, on dial on the dwang of board 19 under fixed mounting have a set of with dial on the board 19 mutually support the contact promote down dial board 20, because axis of rotation 18 passes through drive belt 24 with the dwang and rotates and be connected, the direction of rotation of the two is unanimous, consequently when rotatory week, dial on board 19 and dial down board 20 can contact once, because the dwang is in fixed state, consequently dial under the promotion of board 20 down, can be with axis of rotation 18 together with elevator 17 one section distance of rebound, thereby make a sieve section of thick bamboo 14 when rotatory, carry out one section and reciprocate, thereby increase the inside orientation of rocking when sieving wheat of sieve section of thick bamboo 14.

A group of screen meshes 12 are arranged right below the screen drum 14, a group of moving blocks 29 are fixedly arranged at the left side of the bottom of the screen meshes 12, a group of transverse supporting plates 27 are arranged at the lower sides of the moving blocks 29, a moving groove 28 which penetrates through the supporting plates 27 in the front and back is formed in the left side of the inner portion of each supporting plate 27, the moving blocks 29 are connected to the moving groove 28 in a sliding mode, the left side and the right side of each moving block 29 are elastically connected to the left inner wall and the right inner wall of the corresponding moving groove 28 through two groups of springs 30, a group of sleeve columns 33 are fixedly arranged on the front side walls of the moving blocks 29, a group of transmission rods 26 are rotatably connected to the lower portions, facing the right side of the supporting plates 27, of the transmission rods 26, a group of connecting plates 25 are rotatably connected to the tail ends, when the servo motor 23 operates to drive the driving helical teeth 21 to rotate, the connection of the lower side transmission belt 24 is utilized to drive the connecting plate 25 to swing, and then the moving block 29 is driven to move left and right in the moving groove 28 under the connection of the transmission rod 26, and then the whole screen cloth 12 is driven to move left and right, because the screen cloth 12 is positioned below the screen drum 14, the wheat falling through the screen drum 14 falls into the screen cloth 12, and then the wheat is subjected to left and right shaking screening through the screen cloth 12. And a gap which is convenient for the screen 12 to move left and right and is not contacted with the transmission belt 24 is arranged at the position of the right transmission belt 24 of the screen 12.

Example two

Referring to fig. 4, on the basis of the first embodiment, two sets of symmetrical discharging plates 31 are obliquely arranged outside the lower portions of the front side and the rear side of the bottom of the screen 12, the length of each discharging plate 31 is equal to the maximum moving distance of the screen 12 during left-right shaking, the bottom of each discharging plate 31 is connected with a material collecting groove 32 with a rectangular structure, the screen 12 between the tops of the two sets of discharging plates 31 is set to be in a closed state, and wheat screened inside the screen 12 is prevented from falling downwards through the middle portions of the two sets of discharging plates 31.

The working principle of the invention is as follows: during the use, the inside of a sieve section of thick bamboo 14 is input to the wheat of waiting to sieve through feed inlet 15, then start servo motor 23 operation, under the connection of upside drive belt 24, drive sieve section of thick bamboo 14 is rotatory, meanwhile under the rotation contact promotion of lower group board 20 and initiative skewed tooth 21, circulation intermittent type nature promotes sieve section of thick bamboo 14 and reciprocates, then the inside wheat of sieve section of thick bamboo 14 drops down in screen cloth 12, then drive the backup pad 27 through the drive belt 24 of downside and drive movable block 29 and remove about in shifting chute 28, thereby drive screen cloth 12 and rock the screening about, the wheat of final screening is inputed to the groove 32 that gathers materials through flitch 31 and is changeed.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A wheat screening mechanism for agricultural machinery comprises a base (10), a bracket (11), a screen (12) and a feeding hole (15); the sieve is characterized in that the left and right sides of the top of the base (10) are fixedly provided with two groups of supports (11) with inverted L-shaped structures, the tail ends of the supports (11) are fixedly provided with vertical lifting plates (13) through connecting blocks, the sieve is characterized in that the middle parts of the left and right groups of lifting plates (13) are provided with a group of sieve cylinders (14) with a transverse truncated cone-shaped structure, the middle parts of the left and right side walls of the sieve cylinders (14) are fixedly connected with transverse rotating shafts (18), the middle parts of the lifting plates (13) are provided with vertical sliding openings (16) which penetrate left and right, the middle parts of the sliding openings (16) are slidably connected with a group of lifting blocks (17), the rotating shafts (18) on the left and right sides are fixedly connected to the lifting blocks (17), the upper and lower sides of the lifting blocks (17) are elastically connected to the upper and lower inner walls of the sliding openings (16, the right end of the rotating shaft (18) is downwards rotatably connected with a group of rotating rods through a transmission belt (24), the left end of each rotating rod is rotatably connected onto a connecting block at the bottom of the right lifting plate (13) through a bearing, and the right end of each rotating rod is rotatably connected with a group of servo motors (23);

a group of screen meshes (12) are arranged right below the screen drum (14), a group of moving blocks (29) are fixedly arranged at the left side of the bottom of the screen meshes (12), a group of transverse supporting plates (27) are arranged at the lower sides of the moving blocks (29), a moving groove (28) which penetrates through the supporting plates (27) in the front-back direction is formed in the left side of the inner part of the supporting plates (27), the movable block (29) is connected to the movable groove (28) in a sliding mode, a set of sleeve columns (33) are fixedly mounted on the front side wall of the movable block (29), the sleeve columns (33) are connected with a set of transmission rods (26) in a rotating mode towards the lower portion of the right side of the supporting plate (27), the tail ends of the transmission rods (26) are connected with a set of connecting plates (25) in a rotating mode, the tail ends of the connecting plates (25) are connected with a set of driven helical teeth (22) in an upward rotating mode through transmission belts (24), and a set of driving helical teeth (21) fixed on rotating rods on the left side of the servo motor.

2. The wheat screening mechanism for the agricultural machine is characterized in that a feed inlet (15) is formed in the left side of the top of the screen drum (14), and a cover plate is hinged to the feed inlet (15).

3. The wheat screening mechanism for the agricultural machinery, according to claim 2, is characterized in that a group of upper shifting plates (19) are fixedly installed on the rotating shaft (18) on the right side between the left side of the driving belt (24) and the right side of the lifting block (17), and a group of lower shifting plates (20) which are matched with the upper shifting plates (19) to be in contact with and pushed by the upper shifting plates (19) are fixedly installed on the rotating shaft right below the upper shifting plates (19).

4. The wheat classifying mechanism for agricultural machines according to claim 3, wherein the moving block (29) is elastically connected at its left and right sides to the left and right inner walls of the moving groove (28) by two sets of springs (30).

5. The wheat screening mechanism for the agricultural machine according to claim 4, wherein a notch which is convenient for the screen cloth (12) to move left and right and does not contact the transmission belt (24) is formed in the right transmission belt (24) of the screen cloth (12).

6. The wheat screening mechanism for the agricultural machine according to any one of claims 1 to 5, wherein two sets of symmetrical blanking plates (31) are obliquely arranged outwards below the front and rear sides of the bottom of the screen (12), the length of each blanking plate (31) is equal to the maximum moving distance of the screen (12) during left-right shaking, and a material collecting groove (32) with a rectangular structure is connected to the bottom of each blanking plate (31).

7. An agricultural machine wheat screening mechanism according to claim 6, wherein the screen cloth (12) between the tops of the two blanking plates (31) is set in a closed state.