CN221056983U

CN221056983U - Random sample extraction device

Info

Publication number: CN221056983U
Application number: CN202322363410.XU
Authority: CN
Inventors: 邹文慧
Original assignee: Shandong Economic And Trade Vocational College
Current assignee: Shandong Economic And Trade Vocational College
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-05-31
Anticipated expiration: 2033-08-31

Abstract

The application discloses a device for randomly extracting samples, and belongs to the technical field of sample extraction. A random sample extraction device, comprising a mounting frame; the vibrating piece is installed inside the installation frame, and the vibrating piece includes the motor of being connected fixedly with the installation frame, and the motor is connected fixedly with bull stick, and the bull stick other end rotates to be connected with the drive frame, and drive frame tip rotates to be connected with two vibrating plates, sliding connection between two vibrating plates, two vibrating plates and installation frame sliding connection, and the drive frame is triangle structure. According to the application, through the design of the vibrating piece, the plastic ball body can be quickly driven to pitch, so that the plastic ball body can be uniformly disturbed, after the vibrating piece is stopped vibrating, the ball body can fall into the classifying groove, then sampling is carried out, the ball body can be conveniently rolled downwards through the design of the tilting plate, and the ball body can be conveniently rolled into the classifying groove through the design of the arc chamfer on the classifying groove.

Description

Random sample extraction device

Technical Field

The application relates to the technical field of sample extraction, in particular to a random sample extraction device.

Background

The random sampling method is that every part in the overall survey object has the possibility of being equally sampled, and is a sampling survey which is completely performed according to the principle of equal opportunity, and is called as an 'equal probability'. Random sampling has four basic forms, namely simple random sampling, equidistant sampling, type sampling and whole group sampling. In the existing sampling teaching of the statistics, manual sampling has tiny subjectivity, and computer simulation does not have reality.

The patent document with the publication number of CN217932815U provides a special statistics random sample extraction device, the device is through starting first motor back, the output shaft of first motor drives first track wheel and rotates, first track wheel rotates the back and drives the second track wheel through the track and rotate, the second track wheel and then drive a running roller of being connected with it and rotate, and then control another running roller rotation, thereby make the conveyer belt have the transmission transportation effect, after starting the second motor, the output shaft of second motor drives the disc and rotates, the jack-prop on disc drive surface rotates, when the jack-prop is circular motion, can drive the spacing frame and make eccentric motion, can drive the semi-gear and do circular motion along the junction of spacing frame and slide rail, can drive the slider and do the slip along the inner wall of slide rail after the semi-gear is periodic circular motion, can promote five kicking block displacements when the slider displacement, the setting of five kicking grooves can promote the sample to place the inside of case, and then accomplish automatic sampling.

In the prior art scheme, though the sample can be pushed into the placing box by the eccentric motion of the limiting frame, the following defects still exist; the motion of the device has certain regularity, if sampling is continuously carried out from different batches of products, when a certain batch of products has quality problems, random and effective sampling of the batch of products cannot be realized due to the fixed frequency of the sampling structure, so that the quality problems are difficult to detect.

In view of this, we propose a random sample extraction device.

Disclosure of utility model

1. Technical problem to be solved

The application aims to provide a random sample extraction device, which solves the problem that the sampling structure has certain regularity in the prior art, and realizes random sampling.

2. Technical proposal

A random sample extraction device, comprising a mounting frame;

The vibrating piece, the vibrating piece is installed inside the installing frame, just the vibrating piece includes the motor of being connected fixedly with the installing frame, the motor is connected fixedly with bull stick, the bull stick other end rotates and is connected with the drive frame, drive frame tip rotates and is connected with two vibrating plates, two sliding connection between the vibrating plate, two vibrating plate and installing frame sliding connection, the drive frame is triangular structure.

Through adopting above-mentioned technical scheme, the design of vibrating piece can drive plastics spheroid fast and turn up, so just can be even the upset plastics spheroid, after stopping vibrating piece vibration, the spheroid can fall into the classifying tank this moment, the follow-up sampling can.

Preferably, the top surfaces of the vibrating plates are connected and fixed with inclined plates, and classification grooves are formed in the top surfaces of the inclined plates.

Through adopting above-mentioned technical scheme, the design of board that inclines just can be convenient for spheroid roll downwards, and the design of arc chamfer on the classifying groove can be convenient for spheroid roll to classifying groove in.

Preferably, the top surface of the installation frame is fixedly connected with a feeding frame, and the feeding frame is convenient for feeding plastic balls for extraction.

By adopting the technical scheme, the feeding frame is convenient for feeding the plastic balls into the mounting frame.

Preferably, a plurality of extraction grooves are formed in the outer wall of the mounting frame, a poking groove is formed in the inner wall of the extraction groove, extraction pieces are fixedly arranged in the poking groove in an internally mounted mode, and the extraction grooves are correspondingly matched with the classification grooves.

Preferably, the extracting piece comprises a baffle plate in sliding connection with the poking groove, a spring is fixedly connected to the bottom surface of the baffle plate, a poking block is fixedly connected to the lower portion of the baffle plate, and the poking block is in sliding connection with the poking groove.

Through adopting above-mentioned technical scheme, the design of extraction spare can be convenient for receive at random the extraction spheroid, has so increased the participation of extractor and has felt, and the extraction spare uses comparatively convenient, only need press can.

3. Advantageous effects

Compared with the prior art, the application has the advantages that:

1. According to the application, through the design of the vibrating piece, the plastic ball body can be quickly driven to pitch, so that the plastic ball body can be uniformly disturbed, after the vibrating piece is stopped vibrating, the ball body can fall into the classifying groove, then sampling is carried out, the ball body can be conveniently rolled downwards through the design of the tilting plate, and the ball body can be conveniently rolled into the classifying groove through the design of the arc chamfer on the classifying groove.

2. According to the application, through the design of the extracting piece, the random extracting ball body can be conveniently received, so that the participation of an extractor is increased, the extracting piece is convenient to use, and only the extracting piece is needed to be pressed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a random sample extraction device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a random sample extraction device according to an embodiment of the application in cross-section;

FIG. 3 is a schematic diagram of a classification tank of a random sample extraction device according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a driving frame of a random sample extraction device according to an embodiment of the present application;

The reference numerals in the figures illustrate: 1. a mounting frame; 2. a vibrating member; 3. a motor; 4. a rotating rod; 5. a drive frame; 6. a vibration plate; 7. a tilting plate; 8. a classification tank; 9. a feed frame; 10. a drawing groove; 11. a toggle groove; 12. an extracting member; 13. a partition plate; 14. a spring; 15. and (5) a shifting block.

Detailed Description

The application is described in further detail below with reference to the drawings.

Referring to fig. 1 and 3, an embodiment of the present application discloses a random sample extraction device. A mounting frame 1;

The vibrating piece 2, vibrating piece 2 installs inside installing frame 1, and vibrating piece 2 includes the motor 3 of being connected fixedly with installing frame 1, and motor 3 output shaft is fixed with bull stick 4, and the bull stick 4 other end rotates to be connected with drive frame 5, and drive frame 5 tip rotates to be connected with two vibrating plates 6, sliding connection between two vibrating plates 6, two vibrating plates 6 and installing frame 1 sliding connection, and drive frame 5 is the triangle structure.

The design of vibrating piece 2 can drive plastics spheroid fast and pitch, just so can be even the upset plastics spheroid, after stopping vibrating piece 2 vibration, the spheroid can fall into classification inslot 8 this moment, the follow-up sampling can.

Referring to fig. 3, the top surfaces of the vibrating plates 6 are fixedly connected with a tilting plate 7, and classification grooves 8 are formed in the top surfaces of the tilting plate 7.

The design of the inclined plate 7 can facilitate the ball to roll downwards, and the design of the arc chamfer on the classifying groove 8 can facilitate the ball to roll into the classifying groove 8.

Referring to fig. 1, a feeding frame 9 is fixedly connected to the top surface of the mounting frame 1, and the feeding frame 9 is convenient for feeding plastic balls for extraction.

The feeding frame 9 facilitates the feeding of plastic balls into the mounting frame 1.

Referring to fig. 2, a plurality of extraction grooves 10 are formed in the outer wall of the mounting frame 1, a poking groove 11 is formed in the inner wall of the extraction groove 10, an extraction piece 12 is fixedly installed in the poking groove 11, and the extraction groove 10 is correspondingly matched with the classification groove 8.

The extracting piece 12 comprises a baffle plate 13 which is in sliding connection with the poking groove 11, a spring 14 is fixedly connected to the bottom surface of the baffle plate 13, a poking block 15 is fixedly connected to the lower portion of the baffle plate 13, and the poking block 15 is in sliding connection with the poking groove 11.

The design of the extracting piece 12 can be convenient for receiving random extracting spheres, so that the participation of an extractor is increased, and the extracting piece 12 is convenient to use and can be pressed only.

The embodiment of the application provides a random sample extraction device, which has the implementation principle that: plastic spheres are put into the feeding frame 9, then the output shaft of the motor 3 drives the rotating rod 4 to rotate, at the moment, the rotating rod 4 drives one end of the driving frame 5 to rotate circumferentially, meanwhile, the other two ends of the driving frame 5 can drive the vibrating plate 6 to move vertically in a staggered mode, the spheres are evenly scattered, then the motor 3 stops running, the spheres fall into the classifying groove 8, then different shifting blocks 15 can be pressed, different partition plates 13 are driven to compress the springs 14 to shrink, then the spheres slide out of the extracting groove 10, then the springs 14 drive the partition plates 13 to seal the extracting groove 10, and at the moment, the spheres are opened to check sampling results.

Claims

1. A random sample extraction device, characterized in that: comprising

A mounting frame;

2. The random sample extraction device of claim 1, wherein: the vibrating plate top surface is connected and fixed with a tilting plate, and the tilting plate top surface is provided with a classification groove.

3. The random sample extraction device of claim 1, wherein: the top surface of the installation frame is fixedly connected with a feeding frame, and the feeding frame is convenient for feeding plastic balls for extraction.

4. The random sample extraction device of claim 1, wherein: the installation frame is characterized in that a plurality of extraction grooves are formed in the outer wall of the installation frame, a poking groove is formed in the inner wall of the extraction groove, extraction pieces are fixedly arranged in the poking groove in an internally mounted mode, and the extraction grooves are correspondingly matched with the classification grooves.

5. The random access sample device of claim 4, wherein: the extraction piece includes the baffle with stir groove sliding connection, baffle bottom surface connection is fixed with the spring, baffle lower part connection is fixed with the plectrum, plectrum and stir groove sliding connection.