Anti-blocking structure of combine harvester
By designing an anti-clogging structure in the combine harvester, the reciprocating motion of the arc frame and cleaning rod is used to remove clogged ears of grain, thus solving the problem of clogging of the concave sieve and improving harvesting efficiency and maintenance convenience.
Patent Information
- Application Number
- CN202520279355.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-21
AI Technical Summary
When harvesting high-yield crops such as rice, the concave screen of existing combine harvesters is prone to clogging, resulting in low harvesting efficiency and the need for manual cleaning.
Design a combine harvester anti-clogging structure, including a de-earing roller and a concave screen arranged side by side. The surface of the concave screen is provided with parallel screen grooves, and the bottom has an arc frame and a cleaning rod. The anti-clogging component converts the rotational motion of the de-earing roller into the reciprocating linear motion of the arc frame. The cleaning rod periodically moves within the screen groove to remove the clogged ears of grain.
It effectively reduces grain blockage, improves harvesting efficiency, facilitates maintenance and replacement of concave sieves, and enhances operational performance and reliability.
Smart Images
Figure CN223626459U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of combine harvester anti -blocking, especially relates to a combine harvester anti -blocking structure. BACKGROUND
[0002] In recent years, with the rapid development of modern agricultural technology, higher requirements are put forward for the control and harvesting efficiency of the combine harvester. The emergence of super-yield rice, super hybrid rice and other crops has put forward severe challenges to the power, working performance, operation efficiency and reliability of the combine harvester. These crops have high yield, dense growth, thick stems, green leaves, high moisture content, and the connection force between each part of the rice ear is large, so that the combine harvester is more likely to have a blocking problem during the harvesting process.
[0003] At present, when the combine harvester removes the grain particles on the stems, the traditional concave screen design has defects, which can easily cause the grain particles to be blocked in the mesh holes of the concave screen, and the concave screen does not have an anti-blocking mechanism, so manual cleaning of the mesh holes is required, which reduces the harvesting efficiency. SUMMARY
[0004] The utility model discloses a kind of combine harvester anti -blocking structures to solve the shortcomings that the concave screen on the combine harvester in prior art does not have anti-blocking mechanism.
[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:
[0006] A kind of combine harvester anti -blocking structure, including side by side arrangement's de-ear roller and concave screen, the surface of the concave screen is provided with a plurality of parallel screen grooves, the bottom of the concave screen is provided with arc-shaped frame, a plurality of rows of cleaning rods are arranged in the corresponding screen groove in arc-shaped frame with equal interval, the de-ear roller and arc-shaped frame are provided with anti-blocking component, the anti-blocking component converts the rotary motion of the de-ear roller into the reciprocating linear motion of arc-shaped frame along the extension direction of screen groove, so that the cleaning rod is periodically displaced in the screen groove.
[0007] Preferably, the anti-blocking component includes a connecting ring mounted on the rotating shaft of the de-ear roller and a connecting plate mounted on both ends of the arc-shaped frame, and a drive rod is fixedly arranged on the connecting ring.
[0008] Preferably, a limiting piece is arranged between the concave screen and the arc-shaped frame, the limiting piece includes a fixed plate and a connecting sleeve arranged symmetrically, the fixed plate is fixedly installed at both ends of the arc-shaped frame, the connecting sleeve is fixedly installed at both ends of the concave screen, a limiting rod is fixedly arranged on the upper surface of the fixed plate, the upper end of the limiting rod is located in the connecting sleeve slot, and a spring is fixedly arranged between the limiting rod and the inner wall of the connecting sleeve slot.
[0009] Preferably, the top of the limiting rod is provided with a cross-shaped mounting shaft, two rollers are rotatably arranged on the mounting shaft, and the rollers are attached to the upper surface of the connecting sleeve.
[0010] Preferably, two positioning rods are fixedly arranged at the two ends of the de-ear roller, the connecting ring is provided with the positioning rods, and nuts are threadedly arranged at the ends of the positioning rods.
[0011] Preferably, an inclined surface is arranged at one end of the connecting plate away from the arc-shaped frame, and the inclined surface is in the same plane as the driving rod.
[0012] Preferably, mounting grooves are arranged in the inner walls of the grooves of the limiting rod and the connecting sleeve, and the two ends of the spring are located in the mounting grooves.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1. In the utility model, the sieve groove on the concave sieve is changed into a long strip shape to reduce the blockage of ear grains, and an arc-shaped frame is arranged at the bottom of the concave sieve, the cleaning rod of the arc-shaped frame is located in the sieve groove, the arc-shaped frame is moved by the anti-blocking assembly, the cleaning rod moves back and forth along the sieve groove, and some ear grains blocked in the sieve groove are removed, so that the harvesting efficiency is improved.
[0015] 2. In the utility model, two rollers are arranged to reduce the friction of the limiting rod during movement, and the arc-shaped frame and the concave sieve are quickly separated through the threaded connection of the mounting shaft and the limiting rod, so that maintenance and replacement are facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the utility model, constitute a part of the present application, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the anti-blocking assembly structure of the utility model;
[0019] Figure 3 It is a schematic diagram of the concave sieve and the arc-shaped frame structure of the utility model;
[0020] Figure 4 It is a schematic diagram of the limiting member structure of the utility model.
[0021] The figure serial number: 1, the de-ear roller; 11, the concave screen; 12, the sieve groove; 13, the arc frame; 14, the cleaning rod; 2, the anti-blocking assembly; 21, the connecting ring; 22, the driving rod; 23, the connecting plate; 3, the limiting piece; 31, the fixed plate; 32, the limiting rod; 33, the connecting sleeve; 34, the spring; 4, the mounting shaft; 41, the roller; 5, the positioning rod; 51, the nut; 6, the inclined surface; 7, the mounting groove. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0023] Embodiment: the embodiment provides a combined harvester anti-blocking structure, see Figures 1-4 , specifically, including side by side arranged de-ear roller 1 and concave screen 11, the surface of concave screen 11 is provided with multiple parallel sieve grooves 12, the bottom of concave screen 11 is provided with arc frame 13, and multiple rows of cleaning rods 14 are arranged on arc frame 13 at equal intervals and embedded in corresponding sieve grooves 12, and the de-ear roller 1 and arc frame 13 are provided with anti-blocking assembly 2, the anti-blocking assembly 2 converts the rotary motion of the de-ear roller 1 into the reciprocating linear motion of the arc frame 13 along the extension direction of the sieve groove 12, so that the cleaning rod 14 is periodically displaced in the sieve groove 12.
[0024] The de-ear roller 1 and the concave screen 11 are both installed in the combined harvester, after the combined harvester harvests grains from the field, the grains will pass between the de-ear roller 1 and the concave screen 11, by driving the de-ear roller 1 to rotate, the de-ear roller 1 rotating counterclockwise will knock the grains off the stems, and the fallen grains will leave from the sieve groove 12 of the concave screen 11, realizing threshing, the de-ear roller 1 and the concave screen 11 are both prior art, the sieve groove 12 on the concave screen 11 is changed into a long strip shape, reducing the blocking of grains, and the arc frame 13 is arranged at the bottom of the concave screen 11, the cleaning rod 14 of the arc frame 13 is located in the sieve groove 12, the arc frame 13 is moved by the anti-blocking assembly 2, and the cleaning rod 14 is reciprocally moved along the sieve groove 12, so that some grains blocked in the sieve groove 12 are removed, thereby improving the harvesting efficiency.
[0025] In the specific implementation process, as shown in Figure 3 and Figure 4 , the anti-blocking assembly 2 includes the connecting ring 21 mounted on the rotating shaft of the de-ear roller 1 and the connecting plate 23 mounted at both ends of the arc frame 13, the driving rod 22 is fixedly arranged on the connecting ring 21, the end of the connecting plate 23 away from the arc frame 13 is provided with the inclined surface 6, and the inclined surface 6 and the driving rod 22 are located on the same plane.
[0026] The connecting ring 21 is arranged on the shaft of the de-hulling roller 1, and the connecting ring 21 is driven to rotate by the rotation of the de-hulling roller 1, and the connecting ring 21 drives the driving rod 22 to rotate synchronously, when the driving rod 22 touches the inclined surface 6 of the connecting plate 23 during the rotation, the connecting plate 23 is pushed to move a small distance, and the connecting plate 23 drives the arc-shaped frame 13 to move synchronously, so that the cleaning rod 14 removes the blocked grains in the sieve groove 12.
[0027] In the specific implementation process, as shown in Figure 3 and Figure 4 , the limiting piece 3 is arranged between the concave screen 11 and the arc-shaped frame 13, the limiting piece 3 includes the fixed plates 31 and the connecting sleeves 33 which are symmetrically arranged, the fixed plates 31 are fixedly installed at both ends of the arc-shaped frame 13, the connecting sleeves 33 are fixedly installed at both ends of the concave screen 11, the limiting rods 32 are fixedly arranged on the upper surfaces of the fixed plates 31, the upper ends of the limiting rods 32 are located in the grooves of the connecting sleeves 33, the springs 34 are fixedly arranged between the limiting rods 32 and the inner walls of the grooves of the connecting sleeves 33, and the grooves 7 are arranged in the limiting rods 32 and the inner walls of the grooves of the connecting sleeves 33.
[0028] The limiting rods 32 are attached to the inner walls of the grooves of the connecting sleeves 33, and are used for limiting the moving direction of the arc-shaped frame 13, when the arc-shaped frame 13 moves, the limiting rods 32 are driven to slide along the connecting sleeves 33, when the driving rod 22 leaves the connecting plate 23, the limiting rods 32 in the connecting sleeves 33 are reset by the pushing force of the springs 34, the limiting rods 32 drive the arc-shaped frame 13 to reset, and the back-and-forth movement of the arc-shaped frame 13 is realized.
[0029] In the specific implementation process, as shown in Figure 3 and Figure 4 , the top of the limiting rod 32 is screwedly provided with the cross-shaped mounting shaft 4, and the two rollers 41 are rotatably arranged on the mounting shaft 4 and are attached to the upper surfaces of the connecting sleeves 33.
[0030] The two rollers 41 are arranged to reduce the friction when the limiting rod 32 moves, and the mounting shaft 4 is screwedly connected with the limiting rod 32, so that the arc-shaped frame 13 and the concave screen 11 can be quickly separated, and the maintenance and replacement are facilitated.
[0031] In the specific implementation process, as shown in Figure 1 and Figure 2 , the two positioning rods 5 are fixedly arranged at both ends of the de-hulling roller 1, and the connecting ring 21 is sleeved on the positioning rods 5, and the nuts 51 are screwedly arranged at the ends of the positioning rods 5.
[0032] After the connecting ring 21 is sleeved on the de-hulling roller 1 and the two positioning rods 5, the nuts 51 are arranged at the ends of the positioning rods 5, so that the position of the connecting ring 21 is fixed, and the installation and dismounting of the connecting ring 21 are facilitated.
[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A chaffer structure for a combine harvester, a grain threshing device comprising a beater roller (1) and a concave screen (11) arranged side by side, characterized in that: The concave screen (11) is provided with a plurality of parallel screen grooves (12) on the surface, the bottom of the concave screen (11) is provided with an arc-shaped frame (13), a plurality of rows of cleaning rods (14) are arranged at equal intervals on the arc-shaped frame (13) and embedded in the corresponding screen grooves (12), the anti-blocking assembly (2) is arranged between the de-fruiter (1) and the arc-shaped frame (13), the anti-blocking assembly (2) converts the rotary motion of the de-fruiter (1) into the reciprocating linear motion of the arc-shaped frame (13) along the extension direction of the screen groove (12), so that the cleaning rod (14) is periodically displaced in the screen groove (12).
2. The anti-blocking structure of a combine harvester according to claim 1, characterized in that: The anti-blocking assembly (2) comprises a connecting ring (21) mounted on the rotating shaft of the de-fruiter (1) and a connecting plate (23) mounted on both ends of the arc-shaped frame (13), and the connecting ring (21) is fixedly provided with a driving rod (22).
3. The anti-blocking structure of a combine harvester according to claim 1, characterized in that: The anti-blocking assembly (2) comprises a connecting ring (21) mounted on the rotating shaft of the de-fruiter (1) and a connecting plate (23) mounted on both ends of the arc-shaped frame (13), and the connecting ring (21) is fixedly provided with a driving rod (22).
4. The anti-blocking structure of a combine harvester according to claim 3, characterized in that: The concave screen (11) and the arc-shaped frame (13) are provided with a limiting part (3), the limiting part (3) comprises symmetrically arranged fixed plates (31) and connecting sleeves (33), the fixed plates (31) are fixedly installed on both ends of the arc-shaped frame (13), the connecting sleeves (33) are fixedly installed on both ends of the concave screen (11), the upper surfaces of the fixed plates (31) are fixedly provided with limiting rods (32), the upper ends of the limiting rods (32) are located in the grooves of the connecting sleeves (33), and springs (34) are fixedly arranged between the limiting rods (32) and the inner walls of the grooves of the connecting sleeves (33).
5. The anti-blocking structure of a combine harvester according to claim 2, characterized in that: The top of the limiting rod (32) is threadedly provided with a cross-shaped mounting shaft (4), two rollers (41) are rotatably arranged on the mounting shaft (4), and the rollers (41) are attached to the upper surfaces of the connecting sleeves (33).
6. The anti-blocking structure of a combine harvester according to claim 2, characterized in that: Both ends of the de-fruiter (1) are fixedly provided with two positioning rods (5), the connecting ring (21) is sleeved on the positioning rods (5), and the end portions of the positioning rods (5) are threadedly provided with nuts (51).
7. The anti-blocking structure of a combine harvester according to claim 3, characterized in that: The end of the connecting plate (23) away from the arc-shaped frame (13) is provided with an inclined surface (6), and the inclined surface (6) is located in the same plane as the driving rod (22). The inner walls of the grooves of the limiting rod (32) and the connecting sleeve (33) are provided with mounting grooves (7), and the ends of the spring (34) are located in the mounting grooves (7).