阅读说明：本技术 沿纵轴流方向可分段调节凹板间隙的脱粒室及调节方法 (Threshing chamber capable of adjusting gap of concave plate in segmented mode along longitudinal axial flow direction and adjusting method ) 是由 尹彦鑫 孟志军 丛岳 李立伟 秦五昌 郭树霞 张光强 于 2019-09-16 设计创作，主要内容包括：本发明涉及农业机械设备技术领域,提供了一种沿纵轴流方向可分段调节凹板间隙的脱粒室及调节方法,该脱粒室包括本体框架,还包括入口侧凹板、出口侧凹板与调节机构；本体框架包括两个相互平行间隔设置的第一固定架与第二固定架,入口侧凹板及出口侧凹板沿纵轴流方向依次设置在本体框架的下方；入口侧凹板的一端与第一固定架铰接,出口侧凹板的一端与第一固定架铰接,在入口侧凹板的另一端与第二固定架之间以及在出口侧凹板的另一端与第二固定架之间均设置有调节机构,用于调节凹板间隙。本发明提供的脱粒室,可以根据茎秆和穗头的疏密程度分别调节各自的凹板间隙,也无需停机下车依靠人工手动操作,操作更方便,有利于提高收割机的工作效率。(The invention relates to the technical field of agricultural mechanical equipment, and provides a threshing chamber capable of adjusting the gap between concave plates in a segmented mode along the direction of longitudinal axial flow and an adjusting method, wherein the threshing chamber comprises a body frame, an inlet side concave plate, an outlet side concave plate and an adjusting mechanism; the body frame comprises a first fixing frame and a second fixing frame which are arranged in parallel at intervals, and the inlet side concave plate and the outlet side concave plate are sequentially arranged below the body frame along the longitudinal axial flow direction; one end of the inlet side concave plate is hinged with the first fixing frame, one end of the outlet side concave plate is hinged with the first fixing frame, and adjusting mechanisms are arranged between the other end of the inlet side concave plate and the second fixing frame and between the other end of the outlet side concave plate and the second fixing frame and used for adjusting the gap between the concave plates. The threshing chamber provided by the invention can respectively adjust the gap of the concave plates according to the density degree of the stalks and the spikes, does not need to be shut down and get off by manual operation, is more convenient to operate, and is beneficial to improving the working efficiency of the harvester.)

1. A threshing chamber capable of adjusting the gap between concave plates in a sectional mode along the direction of longitudinal axial flow comprises a body frame and is characterized by further comprising an inlet side concave plate, an outlet side concave plate and an adjusting mechanism;

the body frame comprises a first fixing frame and a second fixing frame which are arranged in parallel at intervals, and the inlet side concave plate and the outlet side concave plate are sequentially arranged below the body frame along the longitudinal axial flow direction;

one end of the inlet side concave plate is hinged with the first fixing frame, one end of the outlet side concave plate is hinged with the first fixing frame, and adjusting mechanisms are arranged between the other end of the inlet side concave plate and the second fixing frame and between the other end of the outlet side concave plate and the second fixing frame and used for adjusting the gap between the concave plates.

2. The threshing chamber of claim 1 wherein the adjustment mechanism includes a shaft, a linkage assembly, and a drive member;

the base of the driving element is fixedly arranged on the second fixing frame;

the rotating shaft is horizontally arranged, one end of the rotating shaft is connected with the output shaft of the driving element, and the other end of the rotating shaft is rotatably connected with the second fixing frame;

the top of the connecting rod assembly is slidably sleeved on the rotating shaft, the bottom of the connecting rod assembly between the second fixing frame and the inlet side concave plate is connected with the inlet side concave plate, and the bottom of the connecting rod assembly between the second fixing frame and the outlet side concave plate is connected with the outlet side concave plate.

3. The threshing chamber with a sectionally adjustable gap between concave plates along the longitudinal axial flow direction of claim 2, wherein the second fixing frame is a rectangular frame body, four fixing plates are arranged in parallel at intervals in the rectangular frame body, each fixing plate is arranged vertically, two fixing plates above the concave plate at the inlet side are in one group, and the other two fixing plates above the concave plate at the outlet side are in one group;

the rotating shaft is positioned between two fixing plates in the same group, the base of the driving element is arranged on one of the fixing plates in the same group, and one end of the rotating shaft, which is far away from the driving element, is rotatably connected with the other fixing plate in the same group.

4. The threshing chamber of claim 2 wherein the linkage assembly includes a first slide arm, a second slide arm, and a floor;

the first sliding arm, the second sliding arm and the bottom plate are connected to form a U-shaped structure, and the top of the first sliding arm and the top of the second sliding arm are slidably sleeved on the rotating shaft;

the bottom of the first sliding arm is hinged with one end of the bottom plate, and the bottom of the second sliding arm is hinged with the other end of the bottom plate;

the bottom of the bottom plate above the inlet-side concave plate is connected to the inlet-side concave plate, and the bottom of the bottom plate above the outlet-side concave plate is connected to the outlet-side concave plate.

5. The threshing chamber capable of adjusting the gap between concave plates sectionally along the longitudinal axial flow direction of claim 4, wherein the first sliding arm comprises a first sleeve and a first inclined rod, the top of the first inclined rod is hinged with the outer side wall of the first sleeve, the bottom of the first inclined rod is hinged with one end of the bottom plate, and the inner side wall of the first sleeve is provided with forward threads;

the second sliding arm comprises a second sleeve and a second inclined rod, the top of the second inclined rod is hinged with the outer side wall of the second sleeve, the bottom of the second inclined rod is hinged with the other end of the bottom plate, and reverse threads are formed in the inner side wall of the second sleeve;

the outer side wall of the half section of the rotating shaft close to the driving element is provided with a forward thread, the outer side wall of the half section of the rotating shaft far away from the driving element is provided with a reverse thread, the first sleeve is arranged on the half section of the rotating shaft provided with the forward thread, and the second sleeve is arranged on the half section of the rotating shaft provided with the reverse thread.

6. The threshing chamber of claim 4 further comprising a force sensor electrically connected to the drive element;

one end of the force sensor positioned above the inlet side concave plate is connected with the bottom of the bottom plate, and the other end of the force sensor is connected with the inlet side concave plate;

and one end of the force sensor positioned above the outlet side concave plate is connected with the bottom of the bottom plate, and the other end of the force sensor is connected with the outlet side concave plate.

7. The threshing chamber of claim 6 wherein there are two force sensors;

one of the force sensors is arranged close to one end of the bottom plate, the other force sensor is arranged close to the other end of the bottom plate, and the two force sensors are symmetrically arranged relative to the center line of the bottom plate.

8. The threshing chamber of claim 2 further comprising a pull rope sensor electrically connected to the drive element;

the outer shell of the pull rope sensor positioned above the inlet side concave plate is fixed on the bottom frame of the second fixing frame, and a pull rope of the pull rope sensor is connected with the inlet side concave plate;

and the shell of the pull rope sensor positioned above the outlet side concave plate is fixed on the bottom frame of the second fixing frame, and the pull rope of the pull rope sensor is connected with the outlet side concave plate.

9. A method for adjusting a threshing chamber having a concave gap section by section along a longitudinal axial flow direction according to any one of claims 1 to 8, comprising:

an inlet side concave plate and an outlet side concave plate which are independent from each other are arranged below the body frame along the longitudinal axial flow direction;

adjusting mechanisms are respectively arranged between the inlet side concave plate and a second fixing frame and between the outlet side concave plate and the second fixing frame;

the adjusting mechanism adjusts the gap of the concave plate according to the density degree of the stalks and the spike heads along the longitudinal axial flow direction.

10. The method of adjusting a threshing chamber having a gap between concave plates that is adjustable in stages in the direction of longitudinal axial flow of a threshing machine according to claim 9, wherein the drive element adjusts the gap between concave plates based on load information collected by the force sensor and displacement information collected by the pull-string sensor.

Technical Field

The invention relates to the technical field of agricultural mechanical equipment, in particular to a threshing chamber capable of adjusting a gap between concave plates in a segmented mode along a longitudinal axial flow direction and an adjusting method.

Background

The clearance of the threshing concave plate is an important parameter of a threshing system of the combine harvester, directly influences the entrainment loss and the crushing rate of the harvester, and simultaneously influences the subsequent operation link of the harvester. Generally, a manufacturer of the combine harvester before leaving a factory can calibrate according to design parameters of the combine harvester, and the manufacturer tests appropriate operation parameters for a user to refer to. Moreover, because the operation environment of the combine harvester is complex and changeable, the attribute parameters of the wheat, rice and other crops are changed along with the variety, planting environment, maturity and the like, and the parameters provided by manufacturers cannot meet the use requirements of users in different regions. Therefore, when the combine harvester is actually operated, an experienced driver often manually adjusts the clearance of the threshing concave plate of the combine harvester according to the conditions of actual crop varieties, growth vigor, weather and the like so as to reduce the harvesting loss and avoid the faults of blockage and the like.

However, because the threshing concave plate in the prior art is integrated along the direction of the longitudinal axial flow, when the gap of the concave plate at one side is adjusted, the gap of the concave plate at the other side is also changed, and the threshing concave plate needs to be stopped and unloaded, the gap of the concave plate is manually adjusted by a driver, so that the operation is inconvenient, the time is wasted, and the working efficiency is reduced.

Disclosure of Invention

Technical problem to be solved

The invention provides a threshing chamber capable of adjusting concave plate gaps in a sectional mode along the longitudinal axial flow direction and an adjusting method, and aims to solve the technical problems that in the prior art, the threshing chamber cannot adjust the concave plate gaps in a sectional mode, a driver needs to stop and get off the threshing chamber, and the concave plate gaps are manually adjusted by the driver.

(II) technical scheme

In order to solve the above technical problems, an embodiment of the present invention provides a threshing chamber capable of adjusting a gap between concave plates in a segmented manner along a longitudinal axial flow direction, comprising a body frame, an inlet side concave plate, an outlet side concave plate and an adjusting mechanism; the body frame comprises a first fixing frame and a second fixing frame which are arranged in parallel at intervals, and the inlet side concave plate and the outlet side concave plate are sequentially arranged below the body frame along the longitudinal axial flow direction; one end of the inlet side concave plate is hinged with the first fixing frame, one end of the outlet side concave plate is hinged with the first fixing frame, and adjusting mechanisms are arranged between the other end of the inlet side concave plate and the second fixing frame and between the other end of the outlet side concave plate and the second fixing frame and used for adjusting the gap between the concave plates.

The adjusting mechanism comprises a rotating shaft, a connecting rod assembly and a driving element; the base of the driving element is fixedly arranged on the second fixing frame; the rotating shaft is horizontally arranged, one end of the rotating shaft is connected with the output shaft of the driving element, and the other end of the rotating shaft is rotatably connected with the second fixing frame; the top of the connecting rod assembly is slidably sleeved on the rotating shaft, the bottom of the connecting rod assembly between the second fixing frame and the inlet side concave plate is connected with the inlet side concave plate, and the bottom of the connecting rod assembly between the second fixing frame and the outlet side concave plate is connected with the outlet side concave plate.

The second fixing frame is a rectangular frame body, four fixing plates are arranged in the rectangular frame body in parallel at intervals, each fixing plate is vertically arranged, two fixing plates above the inlet side concave plate are in a group, and the other two fixing plates above the outlet side concave plate are in a group; the rotating shaft is positioned between the two fixed plates in the same group, the base of the driving element is arranged on one of the fixed plates in the same group, and one end of the rotating shaft, which is far away from the driving element, is rotatably connected with the other fixed plate in the same group.

The connecting rod assembly comprises a first sliding arm, a second sliding arm and a bottom plate; the first sliding arm, the second sliding arm and the bottom plate are connected to form a U-shaped structure, and the top of the first sliding arm and the top of the second sliding arm are slidably sleeved on the rotating shaft; the bottom of the first sliding arm is hinged with one end of the bottom plate, and the bottom of the second sliding arm is hinged with the other end of the bottom plate; the bottom of the bottom plate above the inlet-side concave plate is connected to the inlet-side concave plate, and the bottom of the bottom plate above the outlet-side concave plate is connected to the outlet-side concave plate.

The first slide arm comprises a first sleeve and a first inclined rod, the top of the first inclined rod is hinged with the outer side wall of the first sleeve, the bottom of the first inclined rod is hinged with one end of the bottom plate, and the inner side wall of the first sleeve is provided with a forward thread; the second slide arm comprises a second sleeve and a second inclined rod, the top of the second inclined rod is hinged with the outer side wall of the second sleeve, the bottom of the second inclined rod is hinged with the other end of the bottom plate, and reverse threads are formed in the inner side wall of the second sleeve; the lateral wall that the pivot is close to half section of drive element offers forward screw thread, and reverse screw thread is offered to the lateral wall that the drive element was kept away from to the pivot half section, and the half section of forward screw thread is offered in the pivot to first sleeve cover, and the half section of reverse screw thread is offered in the pivot to second sleeve cover.

Wherein, the threshing chamber which can adjust the gap of the concave plate in a segmented way along the direction of the longitudinal axial flow also comprises a force sensor which is electrically connected with the driving element; one end of a force sensor positioned above the inlet side concave plate is connected with the bottom of the bottom plate, and the other end of the force sensor is connected with the inlet side concave plate; one end of the force sensor positioned above the outlet side concave plate is connected with the bottom of the bottom plate, and the other end of the force sensor is connected with the outlet side concave plate.

Wherein, the number of the force sensors is two; one of the force sensors is arranged close to one end of the bottom plate, the other force sensor is arranged close to the other end of the bottom plate, and the two force sensors are symmetrically arranged relative to the center line of the bottom plate.

The threshing chamber capable of adjusting the gap of the concave plates in a segmented mode along the longitudinal axial flow direction further comprises a pull rope sensor electrically connected with the driving element; the outer shell of the pull rope sensor positioned above the inlet side concave plate is fixed on the bottom frame of the second fixing frame, and a pull rope of the pull rope sensor is connected with the inlet side concave plate; and the shell of the pull rope sensor positioned above the outlet side concave plate is fixed on the bottom frame of the second fixing frame, and the pull rope of the pull rope sensor is connected with the outlet side concave plate.

A method for adjusting a threshing chamber based on the above threshing chamber, the threshing chamber being capable of adjusting the gap between concave plates in a segmented manner along the longitudinal axial flow direction, the method comprising: an inlet side concave plate and an outlet side concave plate which are independent from each other are arranged below the body frame along the longitudinal axial flow direction; adjusting mechanisms are respectively arranged between the inlet side concave plate and the second fixing frame and between the outlet side concave plate and the second fixing frame; the adjusting mechanism adjusts the gap of the concave plate according to the density degree of the stalks and the spikes along the longitudinal axial flow direction.

The driving element adjusts the gap of the concave plate according to load information acquired by the force sensor and displacement information acquired by the pull rope sensor.

(III) advantageous effects

The threshing chamber capable of adjusting the gap between the concave plates in a segmented mode along the longitudinal axial flow direction is provided with the inlet side concave plate and the outlet side concave plate which are mutually independent along the longitudinal axial flow direction, and two sets of independent adjusting mechanisms are arranged, so that the threshing chamber can respectively adjust the gap between the concave plates according to the density degree of stalks and spike heads, the threshing chamber does not need to be stopped or get off, the gap between the concave plates can be adjusted through manual operation, the operation is more convenient, the time can be saved, and the working efficiency of a harvester can be improved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a threshing chamber provided by the present invention, in which the gap between concave plates is adjustable in stages along the longitudinal axial flow direction;

FIG. 2 is a rear view of an embodiment of the threshing chamber according to the invention with the gap between the concave plates adjustable in stages in the direction of the longitudinal axial flow;

FIG. 3 is a right side view of an embodiment of the threshing chamber according to the invention with the gap between the concave plates adjustable in stages in the direction of the longitudinal axial flow;

FIG. 4 is a schematic view of a partial structure of an embodiment of the threshing chamber according to the present invention, in which the gap between the concave plates is adjustable in stages in the direction of longitudinal axial flow;

in the figure, 1-inlet side recess plate; 2-outlet-side recess plate; 3-a second fixing frame; 4-a rotating shaft; 5, fixing a plate; 6-a first sleeve; 7-a first diagonal rod; 8-a second sleeve; 9-a second diagonal rod; 10-a base plate; 11-a force sensor; 12-a pull cord sensor; 13-first fixing frame.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 3, the embodiment of the present invention provides a threshing chamber capable of adjusting the gap between concave plates in a segmented manner along the longitudinal axial flow direction, which comprises a body frame, an inlet side concave plate 1, an outlet side concave plate 2 and an adjusting mechanism; the body frame comprises a first fixing frame 13 and a second fixing frame 3 which are arranged in parallel at intervals, and the inlet side concave plate 1 and the outlet side concave plate 2 are sequentially arranged below the body frame along the longitudinal axial flow direction; one end of the inlet side concave plate 1 is hinged with the first fixing frame 13, one end of the outlet side concave plate 2 is hinged with the first fixing frame 13, and adjusting mechanisms are arranged between the other end of the inlet side concave plate 1 and the second fixing frame 3 and between the other end of the outlet side concave plate 2 and the second fixing frame 3 and used for adjusting the gap between the concave plates.

Specifically, for example, the inlet-side concave plate 1 and the outlet-side concave plate 2 each have a semi-cylindrical structure; for example, one end of the inlet-side concave plate 1 can be rotatably mounted on the first fixing frame 13 through two hinged supports, the other end of the inlet-side concave plate is connected with the second fixing frame 3 through an adjusting mechanism, one end of the outlet-side concave plate 2 can also be rotatably mounted on the first fixing frame 13 through two hinged supports, and the other end of the outlet-side concave plate is connected with the second fixing frame 3 through an adjusting mechanism; for example, the end face of the semi-cylindrical structure is a flat plate with a certain width, the bottom frame of the first fixing frame 13 is also a flat plate with a certain width, and a hinged support is arranged between the two flat plates to realize that the inlet side concave plate 1 or the outlet side concave plate 2 is rotatably connected to the first fixing frame 13; for example, the top of the adjusting mechanism between the inlet side concave plate 1 and the second fixing frame 3 is connected with the second fixing frame 3, the bottom of the adjusting mechanism can be connected with the top end surface of the inlet side concave plate 1, and when the adjusting mechanism moves upwards or downwards, the adjusting mechanism can drive the inlet side concave plate 1 to rotate upwards or downwards relative to the first fixing frame 13, so that the size of a gap between the inlet side concave plate 1 and a threshing chamber roller is adjusted; the outlet side concave plate 2 and the inlet side concave plate 1 are arranged in the same way, and are not described again; the two sets of adjusting mechanisms are mutually independent and do not interfere with each other, so that the threshing chamber can pertinently adjust the gap between the inlet side concave plate 1 and the threshing chamber roller or the gap between the outlet side concave plate 2 and the threshing chamber roller according to the density degree of the stalks and the spike heads.

The threshing chamber capable of adjusting the gap between the concave plates in a segmented mode along the longitudinal axial flow direction is provided with the inlet side concave plate 1 and the outlet side concave plate 2 which are mutually independent along the longitudinal axial flow direction, and two sets of independent adjusting mechanisms are arranged, so that the threshing chamber can respectively adjust the gap between the concave plates according to the density degree of stalks and spike heads, the threshing chamber does not need to be stopped or get off, the gap between the concave plates can be adjusted by manual operation, the threshing chamber is more convenient to operate, time can be saved, and the working efficiency of a harvester can be improved.

As shown in fig. 2, further, the adjusting mechanism includes a rotating shaft 4, a link assembly, and a driving element; the base of the driving element is fixedly arranged on the second fixing frame 3; the rotating shaft 4 is horizontally arranged, one end of the rotating shaft 4 is connected with an output shaft of the driving element, and the other end of the rotating shaft 4 is rotatably connected with the second fixing frame 3; the top of the connecting rod assembly is slidably sleeved on the rotating shaft 4, the bottom of the connecting rod assembly between the second fixing frame 3 and the inlet side concave plate 1 is connected with the inlet side concave plate 1, and the bottom of the connecting rod assembly between the second fixing frame 3 and the outlet side concave plate 2 is connected with the outlet side concave plate 2.

Specifically, for example, the driving element may be a motor, a base of the motor may be fixed on the fixing plate 5 of the second fixing frame 3 by a bolt, and may be installed near the top of the fixing plate 5, and an output shaft of the motor is horizontally disposed and may be connected to one end of the rotating shaft 4 by a coupling; for example, the other end of the rotating shaft 4 can be rotatably mounted on another fixing plate 5 of the same group, for example, a through hole can be formed in the fixing plate 5, and the other end of the rotating shaft 4 can be rotatably inserted into the through hole by a bearing; the rotating shaft 4 is driven to rotate by the motor, the top of the connecting rod assembly sleeved on the rotating shaft can slide back and forth along the axial direction of the rotating shaft 4, the bottom of the connecting rod assembly can move up and down along the radial direction of the rotating shaft 4, and finally the inlet side concave plate 1 or the outlet side concave plate 2 is driven to move, so that the purpose of adjusting the gap is achieved.

Further, the second fixing frame 3 is a rectangular frame, four fixing plates 5 are arranged in the rectangular frame in parallel at intervals, each fixing plate 5 is vertically arranged, two fixing plates 5 positioned above the inlet-side concave plate 1 are in a group, and the other two fixing plates 5 positioned above the outlet-side concave plate 2 are in a group; the rotating shaft 4 is positioned between two fixed plates 5 in the same group, the base of the driving element is arranged on one fixed plate 5 in the same group, and one end of the rotating shaft 4 far away from the driving element is rotatably connected with the other fixed plate 5 in the same group.

Specifically, for example, the second fixing frame 3 may be a rectangular frame, four fixing plates 5 may be vertically welded inside the rectangular frame, the plate surface of each fixing plate 5 is disposed perpendicular to the rotating shaft 4, two fixing plates 5 are located above the inlet-side concave plate 1, and the distance between the two fixing plates may be designed according to the length of the rotating shaft 4; similarly, the distance between the two fixing plates 5 above the outlet side can also be designed according to the length of the rotating shaft 4.

As shown in fig. 4, further, the link assembly includes a first slide arm, a second slide arm, and a base plate 10; the first sliding arm, the second sliding arm and the bottom plate 10 are connected to form a U-shaped structure, and the top of the first sliding arm and the top of the second sliding arm are slidably sleeved on the rotating shaft 4; the bottom of the first sliding arm is hinged with one end of the bottom plate 10, and the bottom of the second sliding arm is hinged with the other end of the bottom plate 10; the bottom of the bottom plate 10 located above the inlet side concave plate 1 is connected to the inlet side concave plate 1, and the bottom of the bottom plate 10 located above the outlet side concave plate 2 is connected to the outlet side concave plate 2.

Specifically, for example, the first slide arm and the second slide arm may both be of an L-shaped structure, a horizontal section of the L-shaped structure may be a first sleeve 6 made of stainless steel, an inner wall of the first sleeve 6 may be provided with threads, and a vertical section of the L-shaped structure may be a first diagonal rod 7 made of stainless steel; for example, a circular shaft extending outwards can be welded on the side wall of the first sleeve 6, a hole is formed in the rod body of the first diagonal rod 7 close to the top end, the diameter of the hole is larger than that of the circular shaft, the hole is sleeved on the circular shaft by means of a bearing, wherein the inner ring of the bearing is in interference fit with the circular shaft, and the outer ring of the bearing is in interference fit with the hole; for example, the bottom plate 10 and the first diagonal rod 7 may be hinged in the same manner as the first diagonal rod 7 and the first sleeve 6, and the structure of the second slide arm is the same as that of the first slide arm, which is not described herein again; it should be noted that, the screw thread in the second sleeve 8 is opposite to the screw thread in the first sleeve 6, two screw threads with different screw directions are correspondingly formed on the rotating shaft 4, and when the rotating shaft 4 rotates, the first sleeve 6 and the second sleeve 8 approach to each other or separate from each other, so that the bottom plate 10 rises or falls, and finally the inlet side concave plate 1 or the outlet side concave plate 2 is driven to move up or fall, so as to adjust the gap. The connection mode of the bottom plate 10 and the inlet-side concave plate 1 is taken as an example for explanation, the bottom plate 10 and the inlet-side concave plate 1 can be connected through a metal rod, one end of the metal rod is welded at the bottom of the bottom plate 10, the other end of the metal rod is welded with the top end surface of the inlet-side concave plate 1, the bottom plate 10 and the inlet-side concave plate 1 can also be connected directly by using the force sensor 11, for example, the top end of the force sensor 11 is welded with the bottom of the bottom plate 10, and the bottom end of the force sensor 11 can be welded with the top end surface of the inlet; the connection of the base plate 10 to the outlet-side concave plate 2 is the same as the connection of the base plate 10 to the inlet-side concave plate 1, and thus, the description thereof is omitted. Therefore, the load on the concave plate during moving can be measured, the force sensor 11 can send the information to the motor, and the motor can rotate forwards or backwards according to the load so as to adjust the gap.

Further, the first sliding arm comprises a first sleeve 6 and a first inclined rod 7, the top of the first inclined rod 7 is hinged with the outer side wall of the first sleeve 6, the bottom of the first inclined rod 7 is hinged with one end of the bottom plate 10, and the inner side wall of the first sleeve 6 is provided with forward threads; the second sliding arm comprises a second sleeve 8 and a second inclined rod 9, the top of the second inclined rod 9 is hinged with the outer side wall of the second sleeve 8, the bottom of the second inclined rod 9 is hinged with the other end of the bottom plate 10, and reverse threads are formed in the inner side wall of the second sleeve 8; the lateral wall that pivot 4 is close to half section of drive element offers forward screw thread, and reverse screw thread is offered to the lateral wall that pivot 4 kept away from half section of drive element, and first sleeve 6 cover is located pivot 4 and is offered half section of forward screw thread, and second sleeve 8 cover is located pivot 4 and is offered half section of reverse screw thread.

Specifically, for example, an encoder may be sleeved on the rotating shaft 4, and the encoder is electrically connected to the motor, and the encoder is configured to collect the rotating speed and the number of turns of the rotating shaft 4; for example, the thread pitch on the rotating shaft 4 is p, the included angle between the first sleeve 6 and the first diagonal rod 7 is α, and similarly, the included angle between the second sleeve 8 and the second diagonal rod 9 is also α, wherein α ranges from 0 ° to 90 °; the extension lines of the first diagonal rod 7 and the second diagonal rod 9 are intersected at a point A, the position of a point B at the left end of the rotating shaft 4 moves rightwards, and the position of a point C at the right end of the rotating shaft 4 moves leftwards. When the rotating shaft 4 rotates once, the speed relationship between the two points B, C and the speed relationship between the points A satisfy the following relation:

in the formula, V_BIs the absolute velocity of point B, V_CIs the absolute velocity of point C, V_AThe lifting speed of the point A is shown, n is the rotating speed of the rotating shaft 4, and p is the screw pitch.

Furthermore, the threshing chamber which can adjust the gap of the concave plate in a segmented mode along the longitudinal axial flow direction also comprises a force sensor 11 which is electrically connected with the driving element; one end of a force sensor 11 positioned above the inlet side concave plate 1 is connected with the bottom of the bottom plate 10, and the other end is connected with the inlet side concave plate 1; the force sensor 11 located above the outlet-side concave plate 2 has one end connected to the bottom of the base plate 10 and the other end connected to the outlet-side concave plate 2.

Further, the number of the force sensors 11 is two; one of the force sensors 11 is disposed near one end of the base plate 10, the other force sensor 11 is disposed near the other end of the base plate 10, and the two force sensors 11 are disposed symmetrically with respect to a center line of the base plate 10.

Furthermore, the threshing chamber which can adjust the gap of the concave plate in a segmented mode along the longitudinal axial flow direction also comprises a pull rope sensor 12 which is electrically connected with the driving element; the outer shell of the pull rope sensor 12 positioned above the inlet side concave plate 1 is fixed on the bottom frame of the second fixing frame 3, and the pull rope of the pull rope sensor 12 is connected with the inlet side concave plate 1; the housing of the pull rope sensor 12 located above the exit-side concave plate 2 is fixed on the bottom frame of the second fixing frame 3, and the pull rope of the pull rope sensor 12 is connected with the exit-side concave plate 2.

Specifically, for example, in order to detect the lifting value of the concave plate in the process of adjusting the gap and determine the current position of the concave plate, a pull rope sensor 12 may be provided, a through hole may be formed in a bottom frame of the second fixing frame 3, the pull rope sensor 11 passes through the through hole, and then a lock nut is matched to fix the housing of the pull rope sensor 12 on the second fixing frame 3; the rope sensor 12 is vertically arranged, and one end of the rope is arranged downwards, and the rope can be bonded on the top end surface of the inlet side concave plate 1 by taking the connection mode of the rope sensor 12 and the inlet side concave plate 1 as an example; the pull-cord sensor 12 is located between the two force sensors 11 and is disposed to overlap the center line of the base plate 10. The pull string sensor 12 located above the exit-side concave plate 2 is connected to the pull string sensor 12 located above the entrance-side concave plate 1 in the same manner, and thus, a detailed description thereof will be omitted. When the clearance is adjusted, the displacement of the concave plate can be measured by the lifting pull rope sensor 12 along with the concave plate, and the displacement information is fed back to the motor, and the motor controls the rotating direction and frequency according to the received information, so that the clearance of the concave plate of the threshing chamber can be adjusted in a self-adaptive segmentation manner, and the purposes of balancing the load of the threshing cylinder and improving the threshing separation quality are achieved.

A method for adjusting a threshing chamber based on the above threshing chamber, the threshing chamber being capable of adjusting the gap between concave plates in a segmented manner along the longitudinal axial flow direction, the method comprising: an inlet side concave plate 1 and an outlet side concave plate 2 which are independent from each other are arranged below the body frame along the longitudinal axial flow direction; adjusting mechanisms are respectively arranged between the inlet side concave plate 1 and the second fixing frame 3 and between the outlet side concave plate 2 and the second fixing frame 3; the adjusting mechanism adjusts the gap of the concave plate according to the density degree of the stalks and the spikes along the longitudinal axial flow direction. Specifically, the original integrated threshing chamber concave plate is divided into two mutually independent inlet side concave plates 1 and outlet side concave plates 2, and respective adjusting mechanisms are arranged, the adjusting mechanisms can adjust the gap between the inlet side concave plates 1 and a threshing chamber roller according to the density degree of stalks and spike heads in the threshing chamber along the longitudinal axial flow direction, or adjust the gap between the outlet side concave plates 2 and the threshing chamber roller, so that sectional type adjustment is realized, and the threshing chamber is more flexible.

Further, the driving element adjusts the gap of the concave plate according to the load information collected by the force sensor 11 and the displacement information collected by the pull rope sensor 12. Specifically, taking the inlet-side concave plate 1 as an example, when the load detected by the force sensor 11 is large, the motor may control the inlet-side concave plate 1 to move downward to increase the gap between the inlet-side concave plate 1 and the threshing cylinder; when the load detected by the force sensor 11 is small, the motor can control the inlet side concave plate 1 to move upwards so as to reduce the gap between the inlet side concave plate 1 and the threshing chamber roller; similarly, when the displacement sensor detects that the displacement of the inlet side concave plate 1 is larger, the motor can control the inlet side concave plate 1 to move upwards so as to reduce the gap between the inlet side concave plate 1 and the threshing chamber roller; when the displacement sensor detects that the displacement of the inlet side concave plate 1 is smaller, the motor can control the inlet side concave plate 1 to move downwards so as to increase the gap between the inlet side concave plate 1 and the threshing chamber roller; the outlet side concave plate 2 and the inlet side concave plate 1 have the same feedback regulation mode, and the detailed description is omitted.

It can be seen from the above embodiments that the threshing chamber provided by the invention, which can adjust the gap between the concave plates in a segmented manner along the longitudinal axial flow direction, can adjust and control the motor according to the load and displacement of the concave plates at the inlet side and the outlet side, so that the gap between the concave plates at the inlet side and the gap between the concave plates at the outlet side of the threshing chamber can be differentiated and regularly adjusted in a self-adaptive manner according to the load, thereby achieving the purposes of balancing the load of the threshing cylinder and improving the threshing separation quality.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.