CN117538413A - Detection device for grain loss - Google Patents

Abstract

The invention discloses a detection device for grain loss, which comprises a mounting frame; the material throwing assembly comprises an inner material tray, an outer material tray and a first driver in driving connection with the inner material tray; the outer material tray is fixedly arranged on the mounting frame, the inner material tray is rotatably arranged in the outer material tray, the side wall of the outer material tray is communicated with a first discharge hole, the inner material tray is hollow to form a containing cavity for containing grains, and the side wall of the inner material tray is communicated with a second discharge hole communicated with the containing cavity; the detection assembly comprises a vibration frame, a movable frame, a detector and a plurality of elastic pieces; the movable frame is arranged on the mounting frame, one ends of the elastic pieces are connected with the vibration frame, the other ends of the elastic pieces are connected with the movable frame, and the detector is arranged at the top of the vibration frame. When the inner charging tray rotates to the second discharging port along the circumferential direction and is correspondingly communicated with the first discharging port, so that grains are thrown out, and when the thrown grains collide with the detector, the detector performs calculation according to the vibration amplitude of the vibration frame, and the real operation environment of the combine harvester is effectively simulated.

Description

Detection device for grain loss

Technical Field

The invention relates to the technical field of detecting cereal grains, in particular to a detection device for the loss amount of cereal grains.

Background

The combine harvester is applied to harvesting grains, so that great convenience is provided. In the operation process of the combine harvester, the loss of part of grain particles is unavoidable; therefore, the loss of Duyum grains is an important indicator for measuring the operation performance of the combine harvester. Currently, a loss detection sensor based on a piezoelectric effect is often adopted for research to monitor and record the impact signal of lost seeds in real time.

In some related technologies, most of detector performance calibration test tables for grain loss use a conveyor belt as a core, and put grains or impurities to the conveyor belt, and a sensor is placed below the conveyor belt, so that the grains impurities drop onto a loss detection sensor at a certain speed, however, the scheme has certain limitations: cereal grains are relatively concentrated at the impact point of the sensor, and have no arbitrary property, so that the real operation environment of the combine harvester is difficult to accurately simulate, and the real detection environment cannot be reflected.

Disclosure of Invention

In order to overcome the defects of the prior art, the embodiment of the invention provides a device for detecting the loss of grains.

The technical scheme adopted for solving the technical problems is as follows:

a device for detecting the loss of grains, the device comprising:

a mounting frame;

the material throwing assembly comprises an inner material tray, an outer material tray and a first driver in driving connection with the inner material tray; the outer tray is fixedly arranged on the mounting frame, the inner tray is rotatably arranged in the outer tray, a first discharge hole is formed in the side wall of the outer tray in a penetrating manner, a containing cavity for containing grains is formed in the inner tray in a hollow manner, and a second discharge hole communicated with the containing cavity is formed in the side wall of the inner tray in a penetrating manner; when the first driver drives the inner tray to rotate along the circumferential direction until the second discharge port is correspondingly communicated with the first discharge port, grains are thrown out;

the detection assembly comprises a vibration frame, a movable frame, a detector and a plurality of elastic pieces; the movable frame is arranged on the mounting frame, one ends of the elastic pieces are connected with the vibration frame, the other ends of the elastic pieces are connected with the movable frame, and the detector is arranged at the top of the vibration frame and used for detecting loss after grains are thrown out.

As a preferable technical scheme of the invention, the material throwing assembly further comprises an adjusting part, and the adjusting part is movably arranged in the first discharge hole; when the adjusting part moves along the length of the first discharging hole, the outer diameter of the first discharging hole is increased or reduced.

As a preferable technical scheme of the invention, a feeding part communicated with the accommodating cavity is communicated with the inner charging tray.

As a preferable technical scheme of the invention, the detection assembly further comprises a rotating plate and a second driver; the detector is arranged on the rotating plate, one side of the rotating plate is rotationally connected with the top of the vibration frame, and the second driver is in driving connection with the rotating plate; when the second driver drives the rotating plate to rotate, the orientation of the detector is adjusted.

As a preferable technical scheme of the invention, the second driver comprises a push rod, a first motor, a first moving part and a first screw rod; the first moving part is in threaded connection with the first screw rod, one end of the pushing rod is in rotary connection with the first moving part, the other end of the pushing rod is in rotary connection with the rotating plate, and an output shaft of the first motor is connected with one end of the first screw rod; when the first motor drives the first screw rod to rotate along the circumferential direction, the first moving part moves along the axial direction of the first screw rod, so that the pushing rod drives the rotating plate to rotate.

As a preferable technical scheme of the invention, the movable frame comprises a bottom plate and a plurality of connecting columns arranged on the top of the bottom plate;

the elastic pieces are provided with a plurality of elastic pieces, at least one of the two ends of each elastic piece are respectively connected to the bottom plate and the bottom of the vibration frame, the other elastic pieces are connected to the same end of the vibration frame, and the other ends of the elastic pieces are respectively connected to the connecting columns.

As a preferable technical scheme of the invention, the invention further comprises a third driver, wherein the third driver is in driving connection with the movable frame and is used for driving the movable frame to move.

As a preferable technical scheme of the invention, the third driver comprises a second motor, a second screw rod and a second moving part; the movable frame is arranged on the second moving part, the second moving part is in threaded connection with the second screw rod, and an output shaft of the second motor is in driving connection with one end of the second screw rod; when the second motor drives the second screw rod to rotate, the second moving part moves along the axial direction of the second screw rod so as to drive the movable frame to move.

As a preferable technical scheme of the invention, two second drivers are arranged, and the second screw rod of the former second driver is perpendicular to the second screw rod of the latter second driver.

As a preferred technical scheme of the invention, the invention further comprises at least two clamping assemblies for clamping the outer tray.

Compared with the prior art, the invention has the beneficial effects that:

the first driver drives the inner tray to rotate along the circumferential direction, the inner tray rotates at a certain speed so as to enable a large amount of grains to shake rapidly in the accommodating cavity, when the inner tray rotates to the state that the second discharging hole is correspondingly communicated with the first discharging hole, the grains are thrown out, and then the thrown grains collide with the detector, so that the whole vibration frame generates small-amplitude and irregular vibration, and the detector performs calculation according to the vibration amplitude of the vibration frame, thereby obtaining the loss amount of the grains; the device can effectively simulate the real operation environment of the combine harvester, and improve the accuracy of the loss amount of grains caused by the operation of the combine harvester obtained by simulation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an overall structural diagram of an embodiment of the present invention.

Fig. 2 is an exploded view of the structure of the material slinger assembly according to an embodiment of the present invention.

Fig. 3 is a block diagram of a detection assembly according to an embodiment of the present invention.

Fig. 4 is a structural diagram of a third driver according to an embodiment of the present invention.

Reference numerals in the figures

1. A mounting frame;

2. a material throwing component; 21. an inner tray; 211. a second discharge port; 212. a feeding part; 22. an outer tray; 221. a first discharge port; 23. a first driver; 24. an adjusting section;

3. a detection assembly; 31. a vibration frame; 32. a movable frame; 321. a connecting column; 322. a bottom plate; 33. a detector; 34. an elastic member; 35. a rotating plate; 351. a hinge; 36. a second driver; 361. a push rod; 362. a first motor; 363. a first moving part; 364. a first screw rod;

4. a third driver; 41. a second motor; 42a, a second screw a;42b, a second screw b; 43. a second moving part;

5. and a clamping assembly.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element.

When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In order to solve the technical problems that in the prior art, a scheme of conveying grains by a conveyor belt exists, when grains are relatively concentrated on the collision surface of the collision detector 33, the detector 33 is difficult to accurately simulate the real operation environment of the combine harvester, and the real detection environment cannot be reflected.

The following describes in detail the specific structure of the device for detecting the loss of grains according to the embodiment of the invention, which comprises a mounting frame 1, a material throwing assembly 2 and a detecting assembly 3 according to the specific structure shown in fig. 1-4.

The mounting frame 1 is used for supporting the material throwing component 2 and the detection component 3, so that the situation that the material throwing component 2 and the detection component 3 are separated during operation is prevented.

According to fig. 2, in order to simulate the situation that grains in the combine harvester fall down when the combine harvester is in operation, the loss value of the grains is detected; for this purpose, the material throwing assembly 2 comprises an inner material tray 21, an outer material tray 22 and a first driver 23 in driving connection with the inner material tray 21; the outer material tray 22 is fixedly arranged on the mounting frame 1, the inner material tray 21 is rotatably arranged in the outer material tray 22, a first discharge hole 221 is communicated with the side wall of the outer material tray 22, a containing cavity for containing grains is formed in the inner material tray 21, and a second discharge hole 211 communicated with the containing cavity is communicated with the side wall of the inner material tray 21; when the first driver 23 drives the inner tray 21 to rotate along the circumferential direction until the second discharge port 211 is correspondingly communicated with the first discharge port 221, the grains are thrown out.

Specifically, the foregoing is to carry a large amount of cereal grain to the holding chamber of interior charging tray 21 in temporarily keeping (if first discharge gate 221 staggers with second discharge gate 211, can prevent to carry too much cereal grain to drop outside the holding chamber), drive interior charging tray 21 along its circumference through starting first driver 23, reach certain speed when rotating interior charging tray 21, so that a large amount of cereal grain rocks fast in the holding chamber, when interior charging tray 21 rotates to second discharge gate 211 and first discharge gate 221 correspond the intercommunication, make partial cereal grain wear to locate second discharge gate 211 and first discharge gate 221 simultaneously and outwards drop, and then reach the effect of throwing away partial cereal grain, thereby be convenient for detect the loss volume after the cereal grain is thrown away by detection component 3, compared with the transportation scheme of traditional conveyer belt, the authenticity of this scheme is more accurate.

If the inner tray 21 rotates until the second discharge hole 211 is staggered from the first discharge hole 221, the grains continue to shake rapidly in the accommodating cavity.

It should be noted that, because the second discharging hole 211 and the first discharging hole 221 are all located at the same height, when the inner tray 21 rotates to a certain range, the second discharging hole 211 can be correspondingly communicated with the first discharging hole 221, and at this time, part of grains can be thrown outwards.

It should be noted that the outer tray 22 is hollow and formed with a mounting cavity for mounting the inner tray 21 therein. Specifically, the outer side wall of the inner tray 21 is interference-fitted with the cavity wall of the installation cavity, so that grains cannot fall from the gap between the outer side wall of the inner tray 21 and the cavity wall of the installation cavity when the inner tray 21 rotates at a high speed in the circumferential direction.

It will be appreciated that the inner tray 21 of this embodiment is cylindrical and the mounting cavity is a circular cavity; this arrangement improves the stability of the inner tray 21 during high speed rotation in the mounting cavity.

Referring to fig. 3, the detecting unit 3 includes a vibration frame 31, a movable frame 32, a detector 33, and a plurality of elastic members 34; the movable frame 32 sets up on mounting bracket 1, and the one end and the vibration frame 31 of a plurality of elastic components 34 are connected, and the other end and the movable frame 32 of a plurality of elastic components 34 are connected, and detector 33 sets up in the top of vibration frame 31 for detect the loss volume after grain is thrown away.

Specifically, since the detector 33 is disposed at the top of the vibration frame 31 and is located in the falling range where grains are thrown out, a part of grains can collide with the detector 33 when falling out, and the whole vibration frame 31 vibrates under the action of the elastic member 34, and then the loss of grains in the simulation link is detected by the detector 33.

It should be noted that, since the plurality of elastic members 34 are used to support the whole vibration frame 31, when the thrown grain collides with the detector 33, the whole vibration frame 31 generates small and irregular vibration, that is, the vibration frame 31 is pushed or pulled by the plurality of elastic members 34, so as to achieve universal vibration, and then the detector 33 performs calculation according to the vibration amplitude of the vibration frame 31, so as to obtain the loss amount of grain.

Specifically, the detector 33 calculates the elastic coefficient (k) of the object according to hooke's law; for example, if the grain collides with the detector 33, the spring modulus of the spring is calculated from the spring characteristic of the spring, that is, the Hooke's Law formula f= -kx, where F is the restoring force generated by the vibration and x is the displacement of the object, and the maximum amplitude is substituted into the formula to obtain k=f/x.

It will be appreciated that the resilient member of embodiments of the present invention is a spring.

In summary, the first driver 23 drives the inner tray 21 to rotate along the circumferential direction, the inner tray 21 rotates at a certain speed to enable a large amount of grains to shake rapidly in the accommodating cavity, when the inner tray 21 rotates to the second discharge port 211 and the first discharge port 221 are correspondingly communicated, the grains are thrown out, and then the thrown grains collide with the detector 33, so that the whole vibration frame 31 generates small-amplitude and irregular vibration, and the detector 33 performs calculation according to the vibration amplitude of the vibration frame 31, thereby obtaining the loss amount of the grains; the device can effectively simulate the real operation environment of the combine harvester, and improves the accuracy of the loss amount of the grains caused by the operation of the combine harvester, namely, compared with the traditional conveyor belt scheme, the loss amount of the grains is more accurate.

To be able to simulate the loss of grains of different types of combine harvester; for this purpose, according to fig. 2, in a specific embodiment, the material throwing assembly 2 further comprises an adjusting portion 24, wherein the adjusting portion 24 is movably arranged in the first discharge hole 221; when the adjusting portion 24 moves along the length of the first outlet 221, the outer diameter of the first outlet 221 is increased or decreased. Specifically, the amount of the grain to be thrown out is adjusted by pushing the adjusting portion 24 to move through the first outlet 221.

For example, when the pushing adjustment portion 24 moves along one end of the first outlet 221, the outer diameter of the first outlet 221 is increased, and at this time, the inner tray 21 can throw a large amount of grains out during rotation; on the contrary, when the adjusting part 24 is pushed to move along the other end of the first discharge hole 221, the outer diameter of the first discharge hole 221 is reduced, and the inner tray 21 can throw a small amount of grains out during rotation, so as to achieve the purpose of adjusting the throwing amount of the grains.

It can be understood that the first discharge port 221 in the embodiment of the present invention is a guide slot for guiding the movement of the adjusting portion 24; the two adjusting parts 24 are provided, that is, when the two adjusting parts 24 move close to each other, to reduce the outer diameter of the first discharge port 221, and when the two adjusting parts 24 move away from each other, to increase the outer diameter of the first discharge port 221.

In a specific embodiment, as shown in fig. 2, the feeding portion 212 is connected to the receiving cavity and extends through the inner tray 21, so that a tester can feed different amounts of grains into the receiving cavity through the feeding portion 212. It is understood that the feeding portion 212 of the present embodiment is a funnel.

The detector 33 is oriented for easy adjustment so that different throw directions of the grains can collide with the detector 33; to this end, in a specific embodiment, as shown in fig. 2, the detection assembly 3 further comprises a rotation plate 35 and a second driver 36; the detector 33 is arranged on the rotating plate 35, one side of the rotating plate 35 is rotationally connected with the top of the vibration frame 31, and the second driver 36 is in driving connection with the rotating plate 35; when the second driver 36 drives the rotating plate 35 to rotate, the orientation of the detector 33 is adjusted.

Specifically, the detector 33 is disposed on the top side of the rotating plate 35, and the second driver 36 is drivingly connected to the bottom side of the rotating plate 35; when the orientation of the detector 33 is adjusted, since one side of the rotating plate 35 is rotatably connected to the top of the vibration frame 31, the rotating plate 35 is pushed by the second driver 36 to tilt the entire rotating plate 35 toward; from this setting, can get rid of according to the difference of cereal grain to, adjust the inclination of rotor plate 35 through second driver 36, second driver 36 can promote rotor plate 35 rotation at the demarcation time of predetermineeing to realize reducing too much operation, improve the simplicity of whole flow.

Since the hinge 351 is provided on one side of the rotation plate 35, one side of the rotation plate 35 is rotatably connected to the top of the vibration frame 31 via the hinge 351.

Specifically, in some embodiments, the second driver 36 includes a push rod 361, a first motor 362, a first moving portion 363, and a first screw 364; the first moving part 363 is in threaded connection with the first screw rod 364, one end of the push rod 361 is in rotational connection with the first moving part 363, the other end of the push rod 361 is in rotational connection with the rotating plate 35, and an output shaft of the first motor 362 is in driving connection with one end of the first screw rod 364; when the first motor 362 drives the first screw rod 364 to rotate, the first moving portion 363 moves along the axial direction of the first screw rod 364, so that the push rod 361 drives the rotating plate 35 to rotate.

Specifically, when the output shaft of the first motor 362 drives the first screw rod 364 to rotate in the circumferential direction, the first moving portion 363 moves along the axial direction of the first screw rod 364, and one end of the push rod 361 can drive the other end of the push rod 361 to rise or fall when moving along the moving direction of the first moving portion 363, so that the other end of the push rod 361 can push or pull the orientation angle of the rotating plate 35, that is, the orientation of the detector 33 is adjusted.

For example, when the output shaft of the first motor 362 drives the first screw rod 364 to rotate clockwise, the first moving portion 363 moves along the direction of the detector 33, and the rotating plate 35 is pushed to rotate vertically by the push rod 361; on the contrary, when the output shaft of the first motor 362 drives the first screw rod 364 to rotate in the counterclockwise direction, the first moving portion 363 moves in the direction of the first motor 362, and the rotating plate 35 is pulled to rotate in the transverse direction by the pushing rod 361, so that the orientation of the detector 33 can be adjusted according to the actual requirement.

It can be appreciated that the first moving portion 363 of the embodiment of the present invention is a first nut, and specifically operates on the principle that when the first screw rod 364 rotates, the first screw rod 364 is matched with the first nut, so that the height difference of the screw thread patterns generates a spiral moment, and the first nut can move linearly along the axial direction of the first screw rod 364.

In one embodiment, as shown in fig. 2, the movable frame 32 includes a base plate 322 and a plurality of connecting posts 321 disposed on top of the base plate 322; the elastic members 34 are provided in plurality, two ends of at least one elastic member 34 are respectively connected to the bottom plate 322 and the bottom of the vibration frame 31, the same ends of the other elastic members 34 are respectively connected to the vibration frame 31, and the other ends are respectively connected to the connecting posts 321.

Specifically, when a part of grains collide with the detector 33, the whole vibration table is vibrated by the pressing or pushing of the plurality of elastic members 34, and then the vibration amplitude thereof is detected by the detector 33, whereby the vibration frame 31 can achieve irregular vibration, thereby improving the realism of the simulated combine harvester in operation.

For example, when the vibration frame 31 is pressed downward after a part of grains are thrown out, for example, the entire vibration frame 31 is pushed by the elastic member 34 to repeatedly vibrate from top to bottom by pressing the elastic member 34 at the bottom of the vibration frame 31, and then the vibration amplitude thereof is detected by the detector 33.

Or, for example, the connecting posts 321 are provided in four and arrayed, and both ends of the plurality of elastic members 34 are connected to the vibration frame 31 and each connecting post 321, respectively. When the vibration frame 31 is pushed in the lateral direction after a part of the grain is thrown out, the entire vibration frame 31 is pushed by the elastic member 34 to vibrate repeatedly in the lateral direction by pressing the elastic member 34 between the vibration frame 31 and each of the connecting posts 321, and then the vibration amplitude thereof is detected by the detector 33.

To simulate different grain loss conditions caused by different types of combine harvesters; for this purpose, in a specific embodiment, the detecting device further includes a third driver 4, where the third driver 4 is drivingly connected to the movable frame 32 and is configured to drive the movable frame 32 to move. Specifically, the third driver 4 drives the movable frame 32 to move along the transverse direction, that is, drives the detector 33 to move to different detection positions, so as to adjust the detector 33 to be located at the optimal detection position, thereby simulating different grain loss conditions caused by different types of combine harvesters.

As shown in fig. 4, specifically, the third driver 4 includes a second motor 41, a second screw, and a second moving part 43; the movable frame 32 is arranged on the second moving part 43, the second moving part 43 is in threaded connection with the second screw rod, and the output shaft of the second motor 41 is in driving connection with one end of the second screw rod; when the first motor 362 drives the second screw rod to rotate along the circumferential direction, the second moving portion 43 moves along the axial direction of the second screw rod, so as to drive the movable frame 32 to move.

Specifically, when the output shaft of the second motor 41 drives the second screw rod to rotate in the circumferential direction, the second moving portion 43 can move along the axial direction of the second screw rod, so as to drive the movable frame 32 to move, thereby realizing that the adjustment detector 33 moves to different detection positions.

For example, when the output shaft of the second motor 41 drives the second screw rod to rotate clockwise or counterclockwise, the second moving portion 43 moves along the length of the second screw rod, so as to drive the movable frame 32 to move.

It can be understood that the second moving portion 43 in the embodiment of the present invention is also a nut, and the specific operation principle is that when the second screw rod rotates, the second screw rod is matched with the second nut, so that the height difference of the thread lines generates a spiral moment, and the second nut moves linearly along the axial direction of the second screw rod.

In a further embodiment, the second driver 36 is provided with two, specifically, the second lead screw of the former second driver 36 (hereinafter referred to as a second lead screw a42 a) is provided perpendicularly to the second lead screw of the latter second driver 36 (hereinafter referred to as a second lead screw b42 b); accordingly, it can be understood that the second screw a42a extends in the X-axis direction, the second screw b42b extends in the Y-axis direction, and the second screw b42b is disposed on top of the second moving portion 43 of the previous second driver 36; by this arrangement, the two second moving parts 43 move along the axial direction of the second screw rod a42a and the second screw rod b42b respectively, so that the movable frame 32 is driven to move to different positions, and the detector 33 can be located at the optimal detection position.

An outer tray 22 capable of fixing different outer diameters; to this end, according to fig. 1, in a specific embodiment, the detection device further comprises at least two clamping assemblies 5 for clamping the outer tray 22. Specifically, each clamping assembly 5 includes a clamping portion and an air cylinder, the output shaft of which is connected to the clamping portion. When the outer tray 22 is replaced, the output shafts of the cylinders pull the clamping parts to move in the directions away from each other so as to release the outer tray 22; when the outer tray 22 is assembled, the output shafts of the cylinders push the clamping parts to move along the directions of approaching each other until the clamping parts can be fixedly clamped on the outer tray 22; thereby, the stability of the outer tray 22 is improved, and the inner tray 21 is prevented from dropping off the outer tray 22 when rotating rapidly.

Further, an arc surface for adhering to the outer side wall of the outer tray 22 is formed on each clamping portion, so as to increase the contact area between each clamping portion and the outer tray 22, and further improve the stability of the outer tray 22.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A device for detecting the loss of grains, the device comprising:

a mounting frame;

the material throwing assembly comprises an inner material tray, an outer material tray and a first driver in driving connection with the inner material tray; the outer tray is fixedly arranged on the mounting frame, the inner tray is rotatably arranged in the outer tray, a first discharge hole is formed in the side wall of the outer tray in a penetrating manner, a containing cavity for containing grains is formed in the inner tray in a hollow manner, and a second discharge hole communicated with the containing cavity is formed in the side wall of the inner tray in a penetrating manner; when the first driver drives the inner tray to rotate along the circumferential direction until the second discharge port is correspondingly communicated with the first discharge port, grains are thrown out;

the detection assembly comprises a vibration frame, a movable frame, a detector and a plurality of elastic pieces; the movable frame is arranged on the mounting frame, one ends of the elastic pieces are connected with the vibration frame, the other ends of the elastic pieces are connected with the movable frame, and the detector is arranged at the top of the vibration frame and used for detecting loss after grains are thrown out.

2. The apparatus for detecting loss of grains according to claim 1, wherein the material throwing assembly further comprises an adjusting part movably arranged in the first discharge port; when the adjusting part moves along the length of the first discharging hole, the outer diameter of the first discharging hole is increased or reduced.

3. A device for detecting the loss of grains according to any of claims 2 and 3, wherein a feeding portion communicating with the accommodating chamber is provided in the inner tray.

4. The apparatus for detecting the loss of grains according to claim 1, wherein the detecting assembly further comprises a rotating plate and a second driver; the detector is arranged on the rotating plate, one side of the rotating plate is rotationally connected with the top of the vibration frame, and the second driver is in driving connection with the rotating plate; when the second driver drives the rotating plate to rotate, the orientation of the detector is adjusted.

5. The apparatus for detecting a loss of grains according to claim 4, wherein the second driver includes a push rod, a first motor, a first moving part, and a first screw; the first moving part is in threaded connection with the first screw rod, one end of the pushing rod is in rotary connection with the first moving part, the other end of the pushing rod is in rotary connection with the rotating plate, and an output shaft of the first motor is connected with one end of the first screw rod; when the first motor drives the first screw rod to rotate along the circumferential direction, the first moving part moves along the axial direction of the first screw rod, so that the pushing rod drives the rotating plate to rotate.

6. The apparatus for detecting the loss of grains according to claim 1, wherein the movable frame includes a bottom plate and a plurality of connecting columns provided on top of the bottom plate;

the elastic pieces are provided with a plurality of elastic pieces, at least one of the two ends of each elastic piece are respectively connected to the bottom plate and the bottom of the vibration frame, the other elastic pieces are connected to the same end of the vibration frame, and the other ends of the elastic pieces are respectively connected to the connecting columns.

7. The apparatus according to claim 1, further comprising a third driver drivingly connected to the movable frame for driving the movable frame to move.

8. The apparatus for detecting a loss of grains according to claim 7, wherein the third driver includes a second motor, a second screw, and a second moving portion; the movable frame is arranged on the second moving part, the second moving part is in threaded connection with the second screw rod, and an output shaft of the second motor is in driving connection with one end of the second screw rod; when the second motor drives the second screw rod to rotate, the second moving part moves along the axial direction of the second screw rod so as to drive the movable frame to move.

9. The apparatus according to claim 8, wherein two second drivers are provided, and the second screw of the former second driver is perpendicular to the second screw of the latter second driver.

10. The apparatus for detecting the loss of grains according to claim 1, further comprising at least two holding members for holding the outer tray.