CN221079365U

CN221079365U - Statistics random extraction device

Info

Publication number: CN221079365U
Application number: CN202323155933.1U
Authority: CN
Inventors: 秦一琳; 黄晓萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-06-04
Anticipated expiration: 2033-11-22

Abstract

The utility model discloses a statistics random extraction device, which particularly relates to the technical field of statistics, and comprises a base, wherein rollers are symmetrically and fixedly connected at the left and right sides of the front part and the rear part of the lower end of the base, supporting rods are fixedly connected at the upper end of the base close to the edge in an equidistance distribution manner, the upper ends of the three supporting rods are fixedly connected with a cylinder, the middle part of the lower end of the cylinder is fixedly connected with an outlet pipe, and the front part of the upper end of the cylinder is fixedly connected with a feed hopper.

Description

Statistics random extraction device

Technical Field

The utility model relates to the technical field of statistics, in particular to a statistical random extraction device.

Background

Statistics is a comprehensive science for deducing the essence of the measured object and even predicting the future of the object through means of searching, sorting, analyzing, describing data and the like. Statistics uses a great deal of expertise in mathematics and other disciplines, and its application scope almost covers various fields of social science and natural science.

Random sampling is a sampling method that randomly extracts a portion of a sample from a population for research and analysis. In fields of statistics, sociology and the like, random sampling is a common sampling method and has wide application.

Chinese patent document CN212229724U is a statistical random extraction device, comprising: device main part, test ball, fixed frame, electric putter, stopper and bottom plate, conical recess has been seted up to the inside of device main part, a plurality of holding tanks have been seted up on the top of device main part, the discharge gate has been seted up to bottom one side of device main part, and is a plurality of all set up in the holding tank the test ball, fixed mounting in the middle of the top of device main part the fixed frame, the top fixed mounting of fixed frame electric putter, electric putter's bottom runs through fixed frame fixed connection the stopper, the bottom fixed mounting of device main part the bottom plate. This statistics random extraction device can accomplish the random extraction experiment fast, and application scope is wider, simple structure, facilitate promotion.

When the test ball in the above document enters the cylinder, the test ball cannot be randomly disturbed again, so that after the test ball is put in, the test ball is easily disturbed by artificial intentional placement, the randomness is deteriorated, and the statistical data accuracy is further affected.

Disclosure of utility model

The utility model mainly aims to provide a statistical random extraction device which can effectively solve the problem that the randomness of a test ball is poor inside.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides a statistics random extraction device, includes the base, the anterior and rear portion bilateral symmetry fixedly connected with gyro wheel of base lower extreme, the base upper end is close to edge equidistance distribution fixedly connected with bracing piece, three bracing piece upper end fixedly connected with drum, drum lower extreme middle part fixedly connected with outlet pipe, the anterior fixedly connected with feeder hopper of drum upper end, drum surface middle part fixedly connected with handle, drum upper end middle part is provided with stirring subassembly, base upper end front portion is provided with collecting assembly.

Preferably, the stirring assembly comprises a concave plate, a round hole is formed in the inner wall of the middle of the upper end of the cylinder, a rotating rod is connected inside the round hole in a rotating mode, a motor is fixedly connected to the upper end of the rotating rod, the motor is fixedly connected with the concave plate, stirring blades are fixedly connected to the outer surface of the rotating rod in an equidistance mode, and arc-shaped blocks are fixedly connected to the lower ends of the stirring blades.

Preferably, the lower part of the inner surface of the cylinder is fixedly connected with a disc, the middle part of the upper end of the disc is provided with circular grooves, ball falling holes are distributed in the disc at equal intervals at the circular grooves, the lower end of the disc is provided with limit grooves at equal intervals, the inner walls of the three limit grooves are slidably connected with limiting blocks, and the disc is rotationally connected with a rotating rod.

Preferably, the three stopper lower extreme fixedly connected with circle piece pole, the disc lower extreme is located the spacing groove dead ahead fixedly connected with rectangle piece, rectangle piece and circle piece pole sliding connection, three circle piece pole circle piece surface diameter size is greater than ball hole inner wall diameter size, dwang surface lower part fixedly connected with arc triangular block.

Preferably, the outer surfaces of the three round block rods are sleeved with first springs, and two ends of each first spring are fixedly connected with the adjacent surfaces of the limiting block and the rectangular block respectively.

Preferably, the collecting assembly comprises a pull ring, a T-shaped groove is formed in the front of the upper end of the base, a T-shaped block is movably mounted in the T-shaped groove, an arc opening collecting box is fixedly connected to the upper end of the T-shaped block, and the pull ring is fixedly connected with the arc opening collecting box.

Preferably, the right part of the upper end of the T-shaped block is provided with a circular groove, the bottom of the inner surface of the circular groove is fixedly connected with a dovetail sliding rod, and the upper end of the dovetail sliding rod is fixedly connected with a clamping cambered surface block.

Preferably, the clamping hole is formed in the right portion of the T-shaped groove at the upper end of the base, the inner size and shape of the clamping hole are matched with the outer surface size and shape of the clamping cambered surface block, a second spring is sleeved on the outer surface of the dovetail sliding rod, and two ends of the second spring are fixedly connected with the bottom of the inner surface of the circular groove and the lower end of the clamping cambered surface block respectively.

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the utility model, through the stirring assembly and the collecting assembly, after the test ball enters the cylinder, the test ball can be randomly disturbed for the second time through the stirring blade, and the test ball can drop into the outlet pipe through the ball falling hole under the action of gravity and then enter the arc port collecting box, so that a user can collect the dropped test ball conveniently, and meanwhile, the randomness of the test ball is improved, and the accuracy of statistical data is further improved.

2. According to the utility model, the randomly disordered test balls can drop into the circular groove through the circular disc, the circular groove, the circular block rod and the arc triangular block, and the circular block rod is rotated to move in an intermittent mode through the arc triangular block, so that the test balls can drop from the ball drop holes one by one, the dropping efficiency of the test balls is improved, and the test ball drop device is convenient to use.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a cylinder structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of a cylinder according to the present utility model;

FIG. 4 is a schematic view of the stirring blade structure of the present utility model;

Fig. 5 is a schematic view of the disc structure of the present utility model.

FIG. 6 is a schematic view of a round bar structure according to the present utility model

Fig. 7 is a schematic view of the structure of the arc port collecting box of the present utility model.

In the figure: 1. a base; 2. a roller; 3. a support rod; 4. a cylinder; 5. an outlet tube; 6. a feed hopper; 7. a handle; 8. a stirring assembly; 81. a round hole; 82. a rotating lever; 83. a concave plate; 84. a motor; 85. stirring the leaves; 86. an arc-shaped block; 87. a disc; 88. circular ring grooves; 89. ball falling holes; 810. arc triangular blocks; 811. a limit groove; 812. a limiting block; 813. round block rods; 814. rectangular blocks; 815. a first spring; 9. a collection assembly; 91. a T-shaped groove; 92. a clamping hole; 93. a T-shaped block; 94. an arc opening collecting box; 95. a pull ring; 96. a circular groove; 97. dovetail slide bar; 98. a clamping cambered surface block; 99. and a second spring.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in FIG. 1, the statistical random extraction device comprises a base 1, wherein the front part of the lower end of the base 1 and the left and right symmetrical rear parts of the lower end are fixedly connected with idler wheels 2, the upper end of the base 1 is close to edge equidistantly and fixedly connected with support rods 3, the upper ends of three support rods 3 are fixedly connected with cylinders 4, the middle part of the lower end of each cylinder 4 is fixedly connected with an outlet pipe 5, the front part of the upper end of each cylinder 4 is fixedly connected with a feed hopper 6, the middle part of the outer surface of each cylinder 4 is fixedly connected with a handle 7, the middle part of the upper end of each cylinder 4 is provided with a stirring assembly 8, and the front part of the upper end of the base 1 is provided with a collecting assembly 9.

Through setting up stirring subassembly 8 and collection subassembly 9 for the inside test ball of drum 4 can stir again and disturb, drop from drum 4 inside one by one, improve randomness and the efficiency of whereabouts, the effectual test ball that drops of collecting, convenient to use person uses.

In order to achieve the purpose of secondary stirring and random, as shown in fig. 3, 4, 5 and 6, the stirring assembly 8 comprises a concave plate 83, a round hole 81 is formed in the inner wall of the middle of the upper end of the cylinder 4, a rotating rod 82 is rotatably connected in the round hole 81, a motor 84 is fixedly connected to the upper end of the rotating rod 82, the motor 84 is fixedly connected with the concave plate 83, stirring blades 85 are fixedly connected to the outer surface of the rotating rod 82 in an equidistance distribution mode, and arc blocks 86 are fixedly connected to the lower ends of the three stirring blades 85.

Through setting up motor 84 and stirring leaf 85 for the output of motor 84 can drive dwang 82 and rotate, and then drives stirring leaf 85 and rotate at drum 4 internal surface.

The lower part of the inner surface of the cylinder 4 is fixedly connected with a disc 87, the middle part of the upper end of the disc 87 is provided with a circular groove 88, ball falling holes 89 are distributed in the disc 87 at equal intervals at the circular groove 88, limit grooves 811 are distributed in the lower end of the disc 87 at equal intervals, the inner walls of the three limit grooves 811 are slidably connected with limit blocks 812, and the disc 87 is rotationally connected with the rotating rod 82.

By arranging the limit groove 811 and the limit block 812, the round block rod 813 cannot deviate from the position in the moving process, and the limit effect is achieved.

The round block rod 813 is fixedly connected to the lower end of the three limiting blocks 812, the rectangular block 814 is fixedly connected to the lower end of the disc 87, the rectangular block 814 is arranged right in front of the limiting groove 811, the rectangular block 814 is slidably connected with the round block rod 813, the diameter of the outer surface of the round block of the three round block rods 813 is larger than that of the inner wall of the ball falling hole 89, and the arc triangular block 810 is fixedly connected to the lower portion of the outer surface of the rotating rod 82.

Through setting up arc triangular block 810 and kicker 813 for arc triangular block 810 rotates and can support through the arc and move to kicker 813, and then makes kicker 813 can intermittent type formula motion.

The outer surfaces of the three round block rods 813 are sleeved with first springs 815, and two ends of each first spring 815 are fixedly connected with the adjacent surfaces of the limiting block 812 and the rectangular block 814 respectively.

By providing the first spring 815, the round bar 813 can be restored under the reaction force of the first spring 815.

In order to achieve the purpose of collecting the test balls, as shown in fig. 3 and 7, the collecting assembly 9 comprises a pull ring 95, a T-shaped groove 91 is formed in the front of the upper end of the base 1, a T-shaped block 93 is movably mounted in the T-shaped groove 91, an arc port collecting box 94 is fixedly connected to the upper end of the T-shaped block 93, and the pull ring 95 is fixedly connected with the arc port collecting box 94.

By providing the T-shaped block 93 and the T-shaped groove 91, the position of the arc opening collecting box 94 on the base 1 is limited, and the dropped test balls are collected.

The right part of the upper end of the T-shaped block 93 is provided with a circular groove 96, the bottom of the inner surface of the circular groove 96 is fixedly connected with a dovetail slide bar 97, and the upper end of the dovetail slide bar 97 is fixedly connected with a clamping cambered surface block 98.

Through setting up screens cambered surface piece 98 and forked tail slide bar 97 for screens cambered surface piece 98 can move at the forked tail end of forked tail slide bar 97, and then cooperates other parts to play a role.

The clamping hole 92 is formed in the right portion of the T-shaped groove 91 at the upper end of the base 1, the inner size and shape of the clamping hole 92 are matched with the outer surface size and shape of the clamping cambered surface block 98, a second spring 99 is sleeved on the outer surface of the dovetail sliding rod 97, and two ends of the second spring 99 are fixedly connected with the bottom of the inner surface of the circular groove 96 and the lower end of the clamping cambered surface block 98 respectively.

By providing the detent hole 92 and the second spring 99, the detent cambered surface block 98 can be clamped into the detent hole 92 under the reaction force of the second spring 99, and then fixed.

The working principle of the utility model is as follows: during use, the motor 84 is started, the output end of the motor 84 drives the rotating rod 82 to rotate inside the round hole 81, and then the stirring blade 85 on the rotating rod 82 is driven to rotate, at this time, the test ball is placed inside the cylinder 4 through the feed hopper 6, the test ball is randomly disturbed under the stirring blade 85, at this time, the test ball falls into the circular groove 88 under the action of gravity, the arc block 86 under the stirring blade 85 is driven to slide inside the circular groove 88, when the concave arc surface of the arc triangular block 810 on the rotating rod 82 is contacted with the arc surface on the round block rod 813, at this time, the round block rod 813 pushes the limiting block 812 to slide on the inner wall of the limiting groove 811 under the reaction action of the first spring 815, so that the round block rod 813 slides inside the rectangular block 814, and then the round block on the round block rod 813 is far away from the ball falling hole 89, at this time, the test ball falls into the bottom of the cylinder 4 through the ball falling hole 89, the outlet pipe 5 is discharged, when the test ball is required to be collected, the collection box 94 is pushed, the T-shaped block 94 is pushed to be in the position of the T-shaped block 94, the T-shaped block 94 is pushed to be in the position of the second arc groove 92, and the second arc surface is in the position of the arc groove 92 is compressed, and the second arc surface is in the position of the arc groove is in the arc groove 92 is compressed, and the position of the second arc groove is in the position of the arc groove is in the arc groove, and the position of the arc groove is in the curve groove is left in the curve groove.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A statistical random extraction device, comprising a base (1), characterized in that: the novel stirring device is characterized in that rollers (2) are symmetrically and fixedly connected to the front portion of the lower end of the base (1) and the rear portion of the base, supporting rods (3) are fixedly connected to the upper end of the base (1) close to the edge in an equidistance mode, three supporting rods (3) are fixedly connected to a cylinder (4), an outlet pipe (5) is fixedly connected to the middle portion of the lower end of the cylinder (4), a feeding hopper (6) is fixedly connected to the front portion of the upper end of the cylinder (4), a handle (7) is fixedly connected to the middle portion of the outer surface of the cylinder (4), a stirring assembly (8) is arranged in the middle of the upper end of the cylinder (4), and a collecting assembly (9) is arranged at the front portion of the upper end of the base (1).

2. A statistical random decimator according to claim 1, wherein: stirring subassembly (8) are including concave plate (83), round hole (81) have been seted up to drum (4) upper end middle part inner wall, round hole (81) inside rotation is connected with dwang (82), dwang (82) upper end fixedly connected with motor (84), motor (84) and concave plate (83) fixed connection, dwang (82) surface equidistance distribution fixedly connected with stirring leaf (85), three stirring leaf (85) lower extreme fixedly connected with arc piece (86).

3. A statistical random extraction apparatus according to claim 2, wherein: the utility model discloses a rotary table, including drum (4) inner surface lower part fixedly connected with disc (87), circular groove (88) have been seted up at disc (87) upper end middle part, ball falling hole (89) have been seted up to inside being located circular groove (88) department equidistance distribution of disc (87), limit groove (811) have been seted up to inside equidistance distribution of disc (87) lower extreme, three inner wall sliding connection of limit groove (811) has stopper (812), disc (87) are connected with dwang (82) rotation.

4. A statistical random extraction device according to claim 3, characterized in that: three stopper (812) lower extreme fixedly connected with kicking block pole (813), disc (87) lower extreme is located spacing groove (811) dead ahead fixedly connected with rectangle piece (814), rectangle piece (814) and kicking block pole (813) sliding connection, three kicking block pole (813) kicking block outside surface diameter size is greater than ball hole (89) inner wall diameter size, swivelling lever (82) surface lower part fixedly connected with arc triangular block (810).

5. A statistical random decimator according to claim 4, wherein: the outer surfaces of the three round block rods (813) are sleeved with first springs (815), and two ends of each first spring (815) are fixedly connected with the adjacent surfaces of the limiting block (812) and the rectangular block (814) respectively.

6. A statistical random decimator according to claim 1, wherein: the collecting assembly (9) comprises a pull ring (95), a T-shaped groove (91) is formed in the front portion of the upper end of the base (1), a T-shaped block (93) is movably mounted in the T-shaped groove (91), an arc opening collecting box (94) is fixedly connected to the upper end of the T-shaped block (93), and the pull ring (95) is fixedly connected with the arc opening collecting box (94).

7. A statistical random decimator according to claim 6, wherein: the right part of the upper end of the T-shaped block (93) is provided with a circular groove (96), the bottom of the inner surface of the circular groove (96) is fixedly connected with a dovetail sliding rod (97), and the upper end of the dovetail sliding rod (97) is fixedly connected with a clamping cambered surface block (98).

8. A statistical random decimator according to claim 7, wherein: the novel clamping device is characterized in that a clamping hole (92) is formed in the upper end of the base (1) and located on the right portion of the T-shaped groove (91), the inner size and shape of the clamping hole (92) are matched with the outer surface size and shape of the clamping cambered surface block (98), a second spring (99) is sleeved on the outer surface of the dovetail sliding rod (97), and two ends of the second spring (99) are fixedly connected with the bottom of the inner surface of the circular groove (96) and the lower end of the clamping cambered surface block (98) respectively.