Grain sampling rod structure

Abstract

The utility model discloses a grain sampling rod structure which comprises a sampling outer rod body, a sampling inner rod body coaxially and fixedly arranged in the sampling outer rod body, a sealing end cover fixedly arranged at the top end of the sampling outer rod body, a sampling head fixedly connected to the bottom end of the sampling outer rod body, and a motor mounting frame fixedly connected to the outer side of the bottom end of the sampling inner rod body, a driving motor is fixedly mounted on one side of the top surface of the motor mounting frame, the output shaft end of the driving motor is fixedly connected with a driving bevel gear located below the motor mounting frame, a gear shaft is rotationally connected to the inner wall of the sampling head, and the shaft end of the gear shaft is fixedly connected with a driven bevel gear meshed with the driving bevel gear; and the middle part of the gear shaft is fixedly sleeved with a stasis removing disc positioned below the bottom port of the sampling inner rod body. According to the utility model, the sampling inner rod body is coaxially arranged in the sampling outer rod body, and grains before entering the sampling inner rod body are crushed through the rotation of the stasis removing disc, so that the smoothness of the sampling process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling machines, in particular to a grain sampling rod structure. Background Art

[0002] A sampling machine is a device used in the grain industry. It can pick grain samples from a grain pile through a picking rod to facilitate subsequent physical and chemical property testing of the grain samples. Common types of sampling machines include cantilever rotating structures, gantry structures, and guide rail structures. Limited by the vehicle structure, sampling is mostly done in the vertical direction.

[0003] Although there are various mechanized sampling machines on the market, the sampling structure of most sampling machines is to take samples through a simple negative pressure hollow tube. If there is moisture or agglomeration in the grain near the sampling point during sampling, the moist grain may adhere to the inner wall of the negative pressure hollow tube, or the agglomerated grain may be blocked in the negative pressure central control tube, thereby greatly affecting the sampling effect of the grain, and ultimately affecting the judgment of the results in the grain, reducing the efficiency of grain sampling, and increasing the workload of cleaning the negative pressure hollow tube in the later stage. Utility Model Content

[0004] The utility model proposes a grain sampling rod structure, which comprises a sampling inner rod body coaxially arranged inside a sampling outer rod body, and a reciprocatingly rotatable dispersing disk arranged below a grain inlet of the sampling inner rod body, so as to crush the grain before entering the sampling inner rod body to ensure the smoothness of the sampling process.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0006] A grain sampling rod structure, comprising a sampling outer rod body, a sampling inner rod body coaxially fixedly arranged in the sampling outer rod body, a sealing end cover fixedly arranged at the top end of the sampling outer rod body, and a sampling head fixedly connected to the bottom end of the sampling outer rod body, a sampling power connecting body fixedly arranged on the outer wall of the sampling outer rod body, a tube body fixing opening is provided at the bottom end of the side wall of the sampling outer rod body, a discharging tube body fixedly arranged in the tube body fixing opening is fixedly connected to the top end of the sampling inner rod body, and at least one grain suction opening is provided on the side wall of the sampling head;

[0007] A motor mounting bracket is fixedly connected to the outer side of the bottom end of the sampling inner rod body, a driving motor is fixedly mounted on one side of the top surface of the motor mounting bracket, an output shaft end of the driving motor is fixedly connected to an active bevel gear located below the motor mounting bracket, a gear shaft is rotatably connected to the inner wall of the sampling head, a driven bevel gear meshing with the active bevel gear is fixedly connected to the shaft end of the gear shaft, and a dispersing disk located below the bottom port of the sampling inner rod body is fixedly sleeved on the middle part of the gear shaft.

[0008] Furthermore, an annular positioning frame is fixedly connected to the top of the side wall of the inner sampling rod body, and the outer side of the positioning frame is fixedly connected to the inner wall of the outer sampling rod body.

[0009] Furthermore, a through hole is formed on the top surface of the positioning frame.

[0010] Furthermore, a grain inlet opening corresponding to the grain suction port is provided at the bottom of the side wall of the inner rod body of the sampling device, and the width of the grain inlet opening is not less than the diameter of the grain suction port. A vertically arranged slot is also provided at the bottom of the side wall of the inner rod body of the sampling device, and the gear shaft is located in the slot.

[0011] Furthermore, the bottom of the sampling head is in the shape of an inverted cone, and the inner bottom surface of the sampling head is a conical arc surface with a convex middle portion, and the bottom end of the arc surface is connected with the bottom end of the grain suction port.

[0012] Furthermore, shaft seats are fixedly provided on both sides of the inner wall of the sampling head, micro bearings are embedded in the shaft seats, both ends of the gear shaft are respectively sleeved in the micro bearings, and the top of the micro bearing is fixed by a pressure block embedded in the shaft seat.

[0013] Furthermore, the dispersion disk is a hollow disk structure in the form of a spiral line or a plurality of concentric rings, and the dispersion disk is located above the side of the grain suction port.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model provides a dispersion disk at the bottom inlet of the sampling inner rod body, and drives the dispersion disk to rotate through a driving motor and a gear pair transmission mechanism, so that the dispersion disk stirs and disperses the grains before entering the interior of the sampling inner rod body, thereby preventing the grains that have agglomerated into blocks from directly entering the sampling inner rod body and causing the grain passage to be blocked; at the same time, the dispersion disk rotates periodically, and can periodically change the flow rate of the grains entering the sampling inner rod body per unit time, so that the grains entering the sampling inner rod body periodically have sparse and dense gaps, thereby ensuring the smoothness of the negative pressure airflow in the sampling inner rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of the utility model;

[0017] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the driving part of the dispersion disk;

[0020] Figure 5 is a schematic diagram of the three-dimensional structure of the sampling head;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the dispersion disk.

[0022] In the figure: 1. sampling outer rod; 101. tube fixing port; 2. sampling inner rod; 3. sealing end cover; 4. driving motor; 5. sampling power connector; 6. sampling head; 601. grain suction port; 7. motor mounting bracket; 8. driving bevel gear; 9. gear shaft; 10. driven bevel gear; 11. dispersion disk; 12. positioning bracket. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0024] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0026] The stem structure of the grain sampling machine needs to be used in conjunction with the existing grain sampling machine and its control system, negative pressure material taking equipment, etc., which are all existing technologies and will not be elaborated here.

[0027] See also Figures 1 to 6A grain sampling rod structure includes a sampling outer rod body 1, a sampling inner rod body 2 coaxially fixedly arranged in the sampling outer rod body 1, a sealing end cap 3 fixedly arranged at the top end of the sampling rod outer rod body 1, and a sampling head 6 fixedly connected to the bottom end of the sampling outer rod body 1. Specifically, the sampling outer rod body 1 and the sampling inner rod body 2 are both hollow round rods, and the sampling inner rod body 2 is inserted from top to bottom into the interior of the sampling outer rod body 1 to serve as a grain channel during the sampling process. The sealing end cap 3 is fixedly buckled on the top end of the sampling outer rod body 1 to seal the top of the sampling outer rod body 1, and the sampling head 6 is fixedly connected to the bottom end of the sampling outer rod body 1 through a tight fit to seal the bottom of the sampling outer rod body 1. The top of the side wall of the sampling outer rod 1 is provided with a tube fixing opening 101, and the top of the sampling inner rod 2 is fixedly connected with a discharge tube body (not shown in the figure, i.e., a feed pipe of a negative pressure material taking device) fixedly arranged in the tube fixing opening 101. The discharge tube body is a flexible tube, and its outside is sealedly connected to the tube fixing opening 101. The side wall of the sampling head 6 is provided with at least one grain suction opening 601 (such as Figure 5 In this way, when the negative pressure material taking device is working, the grain suction port 601, the interior of the sampling inner rod body 2, and the material discharging tube body form a negative pressure channel, that is, the channel for grain flow during grain sampling. A sampling power connector 5 is fixedly arranged on the outer wall of the sampling outer rod body 1, which is used to connect with the power output end of the sampling machine to drive the sampling outer rod body 1 to move vertically or linearly at a certain angle (the specific structure of the power output end can be a parallelogram connecting rod mechanism, a hydraulic cylinder driving mechanism, etc.), so that the rod mechanism completes the sampling process.

[0028] Preferably, the bottom of the sampling head 6 is in an inverted cone shape, which is convenient for it to be smoothly inserted into the deep interior of the grain to achieve fixed-point sampling at a deep depth; the inner bottom surface of the sampling head 6 is a conical arc surface with a convex middle part, and the bottom end of the arc surface is connected with the bottom end of the grain suction port 601, so that the grain outside the sampling head 6 can smoothly enter the interior of the sampling head 6 under the action of negative pressure; when the sampling is completed, the negative pressure material taking device stops working, and the remaining grain in the sampling inner rod body 2, that is, the sampling head 6, can fall naturally and completely fall back into the grain pile to be sampled through the grain suction port 601.

[0029] The top of the side wall of the sampling inner rod body 2 is fixedly connected with an annular positioning frame 12 by bolts, and the single-side cross-sectional shape of the positioning frame 12 is "Z"-shaped, and the outer side of the positioning frame 12 is fixedly connected with the inner wall of the sampling outer rod body 1 by bolts. The outer side of the bottom end of the sampling inner rod body 2 is fixedly connected with a motor mounting frame 7. In this embodiment, the shape of the motor mounting frame 7 is similar to that of the positioning frame 12, and is also an annular structure. The single-side cross-sectional shape is also "Z"-shaped. The top side is fixedly connected with the sampling inner rod body 2 by bolts, and the bottom side is fixedly connected with the sampling outer rod body 1 by bolts. In this way, the upper and lower ends of the sampling inner rod body 2 are fixed respectively by the positioning frame 12 and the motor mounting frame 7, so that the sampling inner rod body 2 is coaxially fixedly arranged in the sampling outer rod body 1.

[0030] A miniature driving motor 4 is fixedly mounted on one side of the top surface of the motor mounting frame 7. The output shaft end of the driving motor 4 is fixedly connected to the active bevel gear 8 located below the motor mounting frame 7. A gear shaft 9 is rotatably connected to the inner wall of the sampling head 6. The shaft end of the gear shaft 9 is fixedly connected to a driven bevel gear 10 meshing with the active bevel gear 8. The middle part of the gear shaft 9 is fixedly sleeved with a dispersion disk 11 located below the bottom port of the sampling inner rod body 2. Specifically, shaft seats are fixedly provided on both sides of the inner wall of the sampling head 6. Miniature bearings are embedded in the shaft seats. Both ends of the gear shaft 9 are respectively sleeved in the miniature bearings. The top of the miniature bearing is fixed by a pressure block embedded in the shaft seat. Figure 3 and Figure 6 As shown, the scattering disk 11 is a hollow disk structure in the form of a spiral line or multiple concentric rings, and a hollow sleeve is integrally provided at the center of its diameter direction. The hollow sleeve is fixedly mounted on the gear shaft 9, and the scattering disk 11 is located above the side of the grain suction port 601. In this way, during the sampling process, the driving motor 4 drives the active bevel gear 8 to rotate, and the active bevel gear 8 drives the driven bevel gear 10 to rotate through meshing transmission, so that the gear shaft 9 and the scattering disk 11 thereon rotate synchronously. During the rotation process, the scattering disk 11 stirs and breaks up the grain before entering the interior of the sampling inner rod body 2, so as to prevent the grain that has formed a block from directly entering the sampling inner rod body 2 and causing the grain channel to be blocked; at the same time, the scattering disk 11 rotates periodically, which can periodically change the flow rate of the grain entering the sampling inner rod body 2 per unit time, so that the grain entering the sampling inner rod body 2 periodically has sparse and dense gaps, thereby ensuring the smoothness of the negative pressure airflow in the sampling inner rod body 2.

[0031] Preferably, a perforation is provided on the top surface of the positioning frame 12, and the power supply line of the drive motor 4 is led to the inner top of the sampling outer rod body 1 through the perforation, and then led out from the tube body fixing port 101, or a lead hole is provided on the sealing end cover 3, and the line is led out from the lead hole and connected to the external motor drive control module to realize the motion control of the drive motor 4. The drive motor 4 uses a micro servo motor to facilitate the adjustment of the rotation speed of the scattering disk 11.

[0032] Preferably, a grain inlet port corresponding to the grain suction port 601 is provided at the bottom of the side wall of the sampling inner rod body 2, and the width of the grain inlet port is not less than the diameter of the grain suction port 601. A vertically arranged notch is also provided at the bottom of the side wall of the sampling inner rod body 2, and the gear shaft 9 is located in the notch. By providing a grain inlet port at the bottom entrance of the sampling inner rod body 2, on the one hand, the space for grain circulation is limited so that the cross-sectional area of ​​the entire circulation channel is kept as consistent as possible, and on the other hand, the gear pair can be protected by the bottom side wall of the sampling inner rod body 2, preventing granular grain from entering the gear pair transmission structure, causing adverse effects on the transmission, and accelerating the wear of the gear rack structure.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A grain sampling rod structure, characterized in that: The invention comprises a sampling outer rod body (1), a sampling inner rod body (2) coaxially fixedly arranged in the sampling outer rod body (1), a sealing end cover (3) fixedly arranged at the top end of the sampling rod outer rod body (1), and a sampling head (6) fixedly connected to the bottom end of the sampling outer rod body (1); a sampling power connecting body (5) is fixedly arranged on the outer wall of the sampling outer rod body (1); a tube body fixing opening (101) is provided at the bottom end of the side wall of the sampling outer rod body (1); a discharge tube body fixedly arranged in the tube body fixing opening (101) is fixedly connected to the top end of the sampling inner rod body (2); and at least one grain suction opening (601) is provided on the side wall of the sampling head (6); The outer side of the bottom end of the sampling inner rod body (2) is fixedly connected to a motor mounting frame (7), a driving motor (4) is fixedly mounted on one side of the top surface of the motor mounting frame (7), an output shaft end of the driving motor (4) is fixedly connected to an active bevel gear (8) located below the motor mounting frame (7), a gear shaft (9) is rotatably connected to the inner wall of the sampling head (6), a driven bevel gear (10) meshing with the active bevel gear (8) is fixedly connected to the shaft end of the gear shaft (9), and a dispersing disk (11) located below the bottom port of the sampling inner rod body (2) is fixedly sleeved on the middle part of the gear shaft (9).

2. A grain sampling rod structure according to claim 1, characterized in that: An annular positioning frame (12) is fixedly connected to the top of the side wall of the inner sampling rod body (2), and the outer side of the positioning frame (12) is fixedly connected to the inner wall of the outer sampling rod body (1).

3. A grain sampling rod structure according to claim 2, characterized in that: A perforation is provided on the top surface of the positioning frame (12).

4. A grain sampling rod structure according to claim 1, characterized in that: The bottom of the side wall of the sampling inner rod body (2) is provided with a grain inlet opening corresponding to the grain suction port (601), and the width of the grain inlet opening is not less than the diameter of the grain suction port (601). The bottom of the side wall of the sampling inner rod body (2) is also provided with a vertically arranged notch, and the gear shaft (9) is located in the notch.

5. A grain sampling rod structure according to claim 1, characterized in that: The bottom of the sampling head (6) is in the shape of an inverted cone, and the inner bottom surface of the sampling head (6) is a conical arc surface with a convex middle portion, and the bottom end of the arc surface is connected to the bottom end of the grain suction port (601).

6. A grain sampling rod structure according to claim 5, characterized in that: Axle seats are fixedly arranged on both sides of the inner wall of the sampling head (6), and micro bearings are embedded in the axle seats. The two ends of the gear shaft (9) are respectively sleeved in the micro bearings, and the top of the micro bearing is fixed by a pressing block embedded in the axle seat.

7. A grain sampling rod structure according to any one of claims 1 to 6, characterized in that: The dispersion disk (11) is a hollow disk structure in the form of a spiral line or a plurality of concentric rings, and the dispersion disk (11) is located above the side of the grain intake port (601).

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