CN111802085B - A flexible micro-movement gap easy to adjust concave plate screen - Google Patents

Abstract

The invention provides a concave screen with flexible micro-movement gap easily adjustable, comprising a frame and a plurality of side arc plates arranged at intervals along the length direction of the frame. The long grid plates are connected together, and several long grid plates and several steel wire rods cooperate with each other to form evenly distributed concave plate sieve holes. When the plate sieve is threshing, at the moment when the two are in contact, the concave plate sieve realizes fretting along the direction of the horizontal component of the impact force, which can greatly reduce the impact force during contact, thereby reducing the crushing rate of millet, and at the same time the threshing drum rotates. During threshing, when the concave plate screen is subjected to the continuous force of the flexible threshing drum, supplemented by the restoring force provided by the auxiliary return spring, the fretting concave plate screen will form a reciprocating motion of left and right fretting, and it will also be accompanied by tiny vibrations. It makes the grain layer fluffy, thereby increasing the net removal rate of millet.

Description

A flexible micro-movement gap easy to adjust concave plate screen

technical field

The invention belongs to the technical field of agricultural machinery and equipment, and in particular relates to a concave plate screen with flexible micro-movement clearance and easy adjustment.

Background technique

The traditional harvesting method of millet is mainly to harvest millet manually, and then grind millet with stone, which not only has high labor intensity, but also has very low production efficiency, making it impossible to make ends meet. Today, with the continuous improvement of agricultural mechanized production level, such traditional harvesting The method cannot meet the requirements of the society, so the production of millet in our country is far from insufficient, and it also greatly limits the development of millet and its related industries in our country.

At present, millet threshing is mainly in the form of full feeding and is improved on the basis of the previously developed wheat and rice threshing drum. The modified threshing separation effect is not good. Generally, a bar type threshing drum and a fixed grid concave are used In combination with the plate screen, the existing grid-type concave plate screen is mostly fixed structure, in the process of collision with the millet and the threshing drum, it is easy to cause the millet grain to be unsuitable for separation and the millet to be easily damaged, making it difficult to meet production requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a concave screen with flexible micro-movement gap and easy adjustment, so as to solve the problems of poor threshing effect, low threshing rate, high broken rate and unsuitable separation of millet grains during the threshing process.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a flexible micro-movement gap easily adjustable concave plate screen, including a frame, and also includes a plurality of side arc plates arranged at intervals along the length direction of the frame, a plurality of side arcs The arc plates are connected together by a number of long grid plates arranged along the length direction of the frame, the long grid plates are arranged in parallel, and the long grid plates are connected together by a number of steel wires. The long grid plate and several steel wire rods cooperate with each other to form concave screen holes evenly distributed and used for millet separation;

The top side of one of the side arc plates is connected to the frame through an auxiliary return spring, and the bottom of at least one side arc plate is provided with a concave plate screen support device.

Further, the concave plate screen support device includes a support rod, a roller, a support base, a gap adjustment bolt, an adjustment handle and a fixed plate, the support rods are provided with two, and the two support rods are inclined and supported by the two. The rods are symmetrically arranged on both sides of the bottom of the side arc plate, the tops of the two support rods are connected to the side arc plate with adjustable bolt angles, and the free ends of the two support rods are provided with the rollers;

The frame is provided with the fixing plate along the width direction, the tops of both ends of the fixing plate are provided with the support base, and the support base is provided with a slide rail for the roller to slide back and forth in the support base. The clearance adjusting bolts are penetrated and screwed on the front and rear ends of the slide rail.

Further, the fixing plate is provided with a long through hole for installing the support base, and the support base is adjustable and connected to the long through hole through bolts.

Further, an adjusting rod is connected to the bottom ends of the two supporting rods, and the free ends of the two adjusting rods are jointly connected to the adjusting handle, and the adjusting handle and the adjusting rod are connected in a length-adjustable manner.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention is installed in conjunction with the rotating threshing drum. When the threshing drum drives the millet to thresh with the concave plate screen of the present invention, at the moment when the two are in contact, the concave plate screen realizes fretting along the direction of the horizontal component of the impact force, The impact force during contact can be greatly reduced, thereby reducing the crushing rate of millet. At the same time, when the threshing drum is rotated and threshed, the concave plate screen is supplemented by the restoring force provided by the auxiliary return spring when it is subjected to the continuous force of the flexible threshing drum. The fretting concave screen will form a reciprocating motion of left and right fretting, and at the same time, it will also make the grain layer fluffy with tiny vibration, thereby increasing the net removal rate of millet;

2. The concave plate screen in the present invention can adjust the opening of the support rod by adjusting the handle and ensure that the opening of the support rod is always consistent during the adjustment process, which not only ensures that the micro-movement concave plate screen is always about vertical during the adjustment process. The direction is symmetrical, and the strength of the support rod is enhanced, and an isosceles structure is formed to enhance the stability of the support device. Moreover, by adjusting the opening of the support rod, the gap between the concave screen and the flexible threshing drum can be easily adjusted by micro-movement, and the adjustment method is simple.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of flexible micro-movement gap easily adjustable concave plate screen of the present invention;

Fig. 2 is the structural representation of the concave plate screen support device in the present invention;

Marked in the figure: 3, frame, 301, side arc plate; 302, steel wire; 303, long grid plate; 304, concave screen support device; 3041, roller; 3042, support rod; 3043, support base; 3044 3045, adjusting handle; 3046, fixing plate; 3047, adjusting rod; 305, auxiliary return spring.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are the present invention. Part of the embodiments of the invention, but not all of the embodiments, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

A concave screen with a flexible micro-movement gap that is easy to adjust, as shown in Figure 1, includes a frame 3, and also includes a plurality of side arc plates 301 spaced along the length direction of the frame 3, and the radian of the side arc plates 301 is 180 °, its inner arc surface is evenly distributed with rectangular openings, a plurality of side arc plates 301 are connected together by a plurality of long grid plates 303 arranged along the length direction of the frame 3, and the side arc plates 301 are arranged in the rectangular opening, forming The main structure of the concave plate screen; several long grid plates 303 are arranged in parallel, and several long grid plates 303 are connected together by several steel wires 302, and several long grid plates 303 and several steel wires 302 are connected to each other. The concave plate sieve holes that are uniformly distributed and used for millet separation are formed in cooperation; the top side of one side arc plate 301 is connected to the frame 3 through an auxiliary return spring 305, and the bottom of at least one side arc plate 301 is provided with the described concave plate 301. For the plate screen support device 304, in this embodiment, the concave plate screen support device 304 is provided on both the side arc plates 301 located at the frontmost and rearmost ends.

To further optimize this solution, as shown in FIG. 2, the concave plate screen support device 304 includes a support rod 3042, a roller 3041, a support base 3043, a gap adjustment bolt 3044, an adjustment handle 3045 and a fixing plate 3046. The support rod 3042 Two supporting rods 3042 are provided, and the two supporting rods 3042 are arranged obliquely, and the two supporting rods 3042 are symmetrically arranged on both sides of the bottom of the side arc plate 301, and the tops of the two supporting rods 3042 are connected to the side arc plate with adjustable bolt angles On 301, the free ends of the two support rods 3042 are provided with the described rollers 3041; due to the continuous rotation of the flexible threshing drum 2, the micro-movement concave plate screen 3 can be automatically reset under normal circumstances, but just in case, set all The auxiliary return spring 305 mentioned above, when the fretting concave screen 3 is slightly moved left and right to the limit position, it will be pulled back by the pulling force of the auxiliary return spring 305 to prevent it from being stuck.

The frame 3 is provided with the fixing plate 3046 along the width direction, the tops of both ends of the fixing plate 3046 are provided with the supporting base 3043, and the supporting base 3043 is provided with a roller 3041 for reciprocating sliding therein. The sliding rail, the support base 3043 runs through and is threadedly connected with the gap adjusting bolt 3044 at the front and rear ends of the sliding rail, and the distance that the roller 3041 moves left and right is controlled by the length of the clearance adjusting bolt 3044 deep into the interior of the supporting base 3043;

To further optimize this solution, the fixing plate 3046 is provided with a long through hole for installing the support base 3043, and the support base 3043 is adjustable to connect to the long through hole through bolts, and the long through hole can realize the support base 3043 on the fixing plate 3046. position adjustment.

To further optimize this scheme, the bottom ends of the two support rods 3042 are connected with an adjustment rod 3047, and the free ends of the two adjustment rods 3047 are connected to the adjustment handle 3045, and the adjustment handle 3045 and the adjustment rod 3047 are connected together. There is a length-adjustable connection, and the opening of the support rod 3042 can be adjusted by adjusting the handle 3045 to ensure that the opening of the support rod 3042 is always consistent during the adjustment process, which not only ensures that the micro-movement concave plate screen is always in the vertical direction during the adjustment process. Symmetry increases the strength of the support rod 3042 and forms an isosceles structure to enhance the stability of the support device. Moreover, by adjusting the opening degree of the support rod 3042, the gap between the concave plate screen and the flexible threshing drum can be easily adjusted by micro-movement.

The working principle of the present invention is as follows: the present invention is installed with the rotating threshing drum, and when the threshing drum drives the millet and the concave plate screen of the present invention for threshing, at the moment when the two are in contact, the concave plate screen moves along the horizontal force of the impact force. The micro-movement in the direction can greatly reduce the impact force during contact, thereby reducing the crushing rate of millet. At the same time, when the threshing drum is rotated and threshed, the concave plate screen is subjected to the continuous force of the flexible threshing drum, supplemented by auxiliary return springs With the restoring force provided, the fretting concave screen will form a reciprocating motion of left and right fretting, and at the same time, it will also be accompanied by tiny vibrations to make the grain layer fluffy, thereby increasing the removal rate of millet.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (3)

1. The utility model provides a flexible fine motion clearance easily adjusts concave sieve, includes frame (3), its characterized in that: the grain separator is characterized by further comprising a plurality of side arc plates (301) arranged at intervals along the length direction of the rack (3), the side arc plates (301) are connected together through a plurality of long grid plates (303) arranged along the length direction of the rack (3), the long grid plates (303) are arranged in parallel, the long grid plates (303) are connected together through a plurality of steel wire strips (302), and the long grid plates (303) and the steel wire strips (302) are matched with each other to form concave plate sieve holes which are uniformly distributed and used for separating grains;

one side of the top of one side arc plate (301) is connected to the rack (3) through an auxiliary return spring (305), and the bottom of at least one side arc plate (301) is provided with a concave plate sieve supporting device (304);

the concave plate sieve supporting device (304) comprises supporting rods (3042), rollers (3041), a supporting base (3043), gap adjusting bolts (3044), adjusting handles (3045) and a fixing plate (3046), wherein the number of the supporting rods (3042) is two, the two supporting rods (3042) are obliquely arranged, the supporting rods (3042) are symmetrically arranged at two sides of the bottom of the side arc plate (301), the tops of the two supporting rods (3042) are connected to the side arc plate (301) through bolts with adjustable angles, and the rollers (3041) are arranged at the free ends of the two supporting rods (3042);

the fixed plate (3046) is arranged on the rack (3) along the width direction, the supporting bases (3043) are arranged on the tops of the two ends of the fixed plate (3046), sliding rails capable of allowing the rollers (3041) to slide in a reciprocating mode are arranged in the supporting bases (3043), and the gap adjusting bolts (3044) penetrate through and are connected to the front end and the rear end of each sliding rail of the supporting bases (3043) in a threaded mode.

2. The flexible micro gap easy-to-adjust concave screen according to claim 1, wherein the fixing plate (3046) is provided with a long through hole for installing a supporting base (3043), and the supporting base (3043) is adjustably connected at the long through hole through a bolt.

3. The flexible micro gap easy-to-adjust concave screen according to claim 2, wherein the bottom ends of the two support rods (3042) are both connected with an adjusting rod (3047), the free ends of the two adjusting rods (3047) are connected to the adjusting handle (3045), and the adjusting handle (3045) and the adjusting rod (3047) are connected in a length-adjustable manner.

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