A grain turning robot

Abstract

The present invention discloses a grain turning robot, comprising: a frame; two groups of spiral wheels, which are respectively arranged on both sides of the frame; wherein each group of spiral wheels comprises: a first spiral wheel and a second spiral wheel; the first spiral wheel and the second spiral wheel are coaxially spaced; the first spiral wheel and the second spiral wheel respectively comprise: a core shaft and a plurality of spiral blades; the plurality of spiral blades are spirally wound in the same direction and are arranged on the outside of the core shaft; the ratio of the pitch P of the spiral blade to the outer diameter D of the core shaft satisfies P / D≥4, and the ratio of the height h of the spiral blade to the shaft diameter D satisfies h / D≥0.5; the spiral blades of the first spiral wheel and the second spiral wheel in the same group have the same rotation direction, and the spiral blades of the two first spiral wheels have opposite rotation directions; two driving devices, which are arranged in a one-to-one correspondence with the two groups of spiral wheels; wherein the driving device is located between the first spiral wheel and the second spiral wheel in the same group, and the two ends of the output shaft of the driving device are respectively connected to the core shaft of the first spiral wheel and the core shaft of the second spiral wheel.

Description

Technical Field

[0001] The invention belongs to the technical field of grain turning machinery, and in particular relates to a grain turning robot. Background Art

[0002] my country is a major grain producer, and grain production is crucial to national security. Post-harvest grain drying is a crucial step in this process, primarily achieved through mechanical drying and natural light drying. Because mechanical grain drying rates in my country remain relatively low, natural light drying has long been a common method used in grain storage and seed processing. This method, practiced for thousands of years, is economical, convenient, simple, practical, and fully utilizes space and solar energy. In my country, both professional farm granaries and individual farmers widely utilize natural light drying, resulting in a significant amount of grain being air-dried year-round. Drying grain outdoors requires constant manual turning to ensure uniform drying, which is labor-intensive, time-consuming, and inefficient. Existing mechanical grain turning methods utilize a tractor-mounted turning device. However, due to the limited thickness of the grain being dried and the heavy tractor body, this can cause grain crushing, breakage, and damage, impacting grain quality. Furthermore, existing grain turning equipment is large and expensive. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a grain turning robot that can realize efficient grain turning operation during driving without damaging the grain.

[0004] The technical solution provided by the present invention is:

[0005] A grain turning robot, comprising:

[0006] frame;

[0007] Two sets of spiral wheels are respectively arranged on both sides of the frame;

[0008] Wherein, each set of the spiral wheels comprises: a first spiral wheel and a second spiral wheel; the first spiral wheel and the second spiral wheel are coaxially spaced apart;

[0009] The first spiral wheel and the second spiral wheel respectively include: a core shaft and a plurality of spiral blades;

[0010] The plurality of spiral blades are spirally wound in the same direction and arranged on the outside of the core shaft; the ratio of the pitch P of the spiral blade to the outer diameter D of the core shaft satisfies P / D≥4, and the ratio of the height h of the spiral blade to the shaft diameter D satisfies h / D≥0.5;

[0011] The spiral blades of the first spiral wheel and the second spiral wheel in the same group have the same rotation direction, and the spiral blades of the two first spiral wheels have opposite rotation directions;

[0012] Two driving devices are provided corresponding to the two sets of spiral wheels in a one-to-one manner;

[0013] The driving device is located between the first spiral wheel and the second spiral wheel in the same group, and both ends of the output shaft of the driving device extend to the outside of the driving device and are connected to the core shaft of the first spiral wheel and the core shaft of the second spiral wheel.

[0014] Preferably, the output shafts of the two driving devices are arranged in parallel.

[0015] Preferably, the grain turning robot further comprises:

[0016] Two sets of transmission shafts, which are arranged in a one-to-one correspondence with the two sets of spiral wheels;

[0017] Wherein, each group of the transmission shafts includes: a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are coaxially fixedly connected to both ends of the output shaft respectively;

[0018] The core shaft is a hollow shaft. The core shaft of the first spiral wheel is sleeved on the first transmission shaft, and the core shaft of the second spiral wheel is sleeved on the second transmission shaft.

[0019] Preferably, the core shaft of the first spiral wheel and the first transmission shaft, as well as the core shaft of the second spiral wheel and the second transmission shaft are connected via keys respectively.

[0020] Preferably, the grain turning robot further comprises:

[0021] Two grain turning wheels are coaxially connected to the two second transmission shafts in a one-to-one correspondence; the grain turning wheels are provided with a plurality of grain turning blades, and the grain turning blades are arranged at intervals along the circumference of the grain turning wheels;

[0022] Wherein, the second spiral wheel is located between the driving device and the grain turning wheel.

[0023] Preferably, the grain turning wheel comprises:

[0024] The grain turning wheel shaft is a hollow shaft; the grain turning wheel shaft is coaxially sleeved on the second transmission shaft at one end away from the driving device;

[0025] Wherein, the grain turning blades are fixedly connected to the outer wall of the grain turning wheel shaft.

[0026] Preferably, the grain turning blade is a rectangular blade, one side of the rectangular blade is fixedly connected to the grain turning wheel shaft, and the connecting side of the rectangular blade and the grain turning wheel shaft is parallel to the axial direction of the grain turning wheel shaft.

[0027] Preferably, the grain turning blades are evenly spaced along the circumference of the grain turning wheel shaft.

[0028] Preferably, one end of the grain turning wheel shaft is closed, and the other end has an internal thread;

[0029] Wherein, the end of the second transmission shaft has an external thread, and the grain turning wheel shaft is connected to the second transmission shaft through threads.

[0030] The beneficial effects of the present invention are:

[0031] (1) The grain turning robot provided by the present invention adopts the spiral drive principle. The robot can turn the grain while driving, and grain turning wheels are added to the two power shaft ends of the robot to increase the grain turning depth and efficiency. The overall structure of the robot is simple, the weight is light, and it does not damage the grain.

[0032] (2) The grain turning robot provided by the present invention adopts a high blade-to-axis ratio spiral wheel to increase the contact between the blades and the grain, thereby improving the driving force and increasing the grain turning efficiency.

[0033] (3) The grain turning robot provided by the present invention has two sections of left and right spiral wheels, and the driving device is arranged in the middle of the two left-handed sections. The center of the robot is displaced, the overall layout is more reasonable, and the driving is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The figure is a schematic diagram of the overall structure of the grain turning robot described in the present invention.

[0035] Figure 2 This is a top view of the grain turning robot described in the present invention.

[0036] Figure 3 This is a schematic diagram of the blade-shaft ratio of the first spiral wheel described in the present invention.

[0037] Figure 4 This is a schematic diagram of the connection structure between the transmission shaft and the driving device according to the present invention.

[0038] Figure 5 It is a structural schematic diagram of the grain turning wheel described in the present invention. DETAILED DESCRIPTION

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0040] like Figure 1-5 As shown, the present invention provides a grain turning robot, which includes: a frame 110; two sets of spiral wheels 120, two driving devices 130 and two grain turning wheels 140.

[0041] Two groups of spiral wheels 120 are respectively arranged on both sides of the frame 110; wherein, each group of spiral wheels 120 includes: a first spiral wheel 121 and a second spiral wheel 122; the first spiral wheel 121 and the second spiral wheel 122 are coaxially arranged and spaced apart.

[0042] The first spiral wheel 121 and the second spiral wheel 122 have the same structure, and the following will only take the structure of the first spiral wheel 121 as an example for further description.

[0043] The first spiral wheel 121 includes a core shaft 121a and multiple spiral blades 121b. The multiple spiral blades 121b are helically wound in the same direction around the core shaft 121a. The ratio of the pitch P of the spiral blades 121b to the outer diameter D of the core shaft 121a satisfies P / D ≥ 4, and the ratio of the height h of the spiral blades 121b to the shaft diameter D satisfies h / D ≥ 0.5. Using a spiral wheel with a high blade-to-shaft ratio significantly enhances the grain turning effect of the spiral blades, improving grain turning efficiency.

[0044] The spiral blades of the first spiral wheel 121 and the second spiral wheel 122 in the same group have the same rotation direction, and the spiral blades of the two first spiral wheels 121 have opposite rotation directions. That is, the spiral blades of the coaxially arranged first spiral wheel 121 and the second spiral wheel 122 have the same rotation direction, the spiral blades of the two first spiral wheels 121 on either side of the frame 110 have opposite rotation directions, and the spiral blades of the two second spiral wheels 122 on either side of the frame 110 have opposite rotation directions.

[0045] Two drive devices 130 are provided in a one-to-one correspondence with the two sets of spiral wheels 120. Each drive device 130 is located between the first and second spiral wheels 121, 122 of the same set. The output shafts of the drive devices 130 extend to the exterior of the drive devices 130 and connect to the core shafts 121a of the first and second spiral wheels 122. The drive devices 130 simultaneously drive the first and second spiral wheels 121, 122 to rotate. The output shafts of the two drive devices 130 are arranged in parallel, and so are the corresponding sets of spiral shafts 120.

[0046] In this embodiment, the grain turning robot further comprises two sets of transmission shafts 150, which are arranged in a one-to-one correspondence with the two sets of spiral wheels 120. Each set of transmission shafts 150 comprises a first transmission shaft 151 and a second transmission shaft 152, which are coaxially fixedly connected to the two ends of the output shaft of the drive device 130. The core shaft 121a of the first spiral wheel 121 and the core shaft of the second spiral shaft 122 are hollow shafts. The first spiral wheel 121 is sleeved on the first transmission shaft 151 via the core shaft 121a, and rotates synchronously with the first transmission shaft 151; the second spiral wheel 122 is sleeved on the second transmission shaft 152 via the core shaft, and rotates synchronously with the second transmission shaft 152.

[0047] As a preference, keyways 151a and 152a are respectively provided on the first transmission shaft 151 and the second transmission shaft 152 in the axial direction; the core shaft of the first spiral wheel 121 and the first transmission shaft 151 as well as the core shaft of the second spiral wheel 122 and the second transmission shaft 152 are respectively connected by keys.

[0048] In one embodiment, the driving device 130 includes a motor and a worm gear reducer, and the worm of the reducer is the output shaft of the driving device 130. The first transmission shaft 151 and the second transmission shaft 152 are coaxially fixedly connected to both ends of the worm.

[0049] Preferably, the worm of the reducer is hollow, and the first transmission shaft 151 and the second transmission shaft 152 are integrally formed. That is, each set of transmission shafts 150 is a single, integral shaft structure. The integrated transmission shaft structure, consisting of the first transmission shaft 151 and the second transmission shaft 152, passes through the worm, and the integrated transmission shaft structure and the worm are keyed together for transmission. This integral structure increases the strength of the transmission shaft and facilitates assembly and installation.

[0050] Two grain turning wheels 140 are coaxially connected to one end of the second drive shaft 152, one of the two sets of drive shafts. Specifically, the second spiral wheel 122 is located between the drive unit 130 and the grain turning wheel 140, which are located on the same side. Each grain turning wheel 140 has multiple turning blades 141, spaced apart along its circumference. Rotation of the grain turning wheel 140 ejects grain, improving turning efficiency. During use, the grain turning wheel 140 can be replaced with a different tooth height (blade height) to further enhance turning efficiency, depending on the turning depth.

[0051] In one embodiment, the grain turning wheel 140 further includes a grain turning wheel shaft 142; the grain turning wheel shaft 142 is a hollow shaft; the grain turning wheel shaft 142 is coaxially sleeved on the second transmission shaft 152 at one end away from the drive device 130; wherein the grain turning blade 141 is fixedly connected to the outer wall of the grain turning wheel shaft 142. The grain turning blade 141 is a rectangular blade, one side of which is fixedly connected to the grain turning wheel shaft 142, and the connecting edge of the rectangular blade 141 and the grain turning wheel shaft 142 is parallel to the axial direction of the grain turning wheel shaft 142 to increase the contact area between the grain turning blade 141 and the grain. Multiple grain turning blades 141 are evenly spaced along the circumference of the grain turning wheel shaft 142.

[0052] Preferably, one end of the grain turning wheel shaft 142 is sealed, and the other end has internal threads. The end of the second transmission shaft 152 has external threads, and the grain turning wheel shaft 142 is threadedly connected to the second transmission shaft 152. Threaded installation of the grain turning wheel shaft 142 facilitates replacement of grain turning wheels 140 with different tooth heights to accommodate different grain turning depths. The sealed outer end of the grain turning wheel shaft 142 prevents grain from entering the interior of the grain turning wheel shaft 142.

[0053] The grain turning wheel 140 is located at the rear of the grain turning robot, with the other end at the head. During grain turning, the two spiral wheels rotate inward simultaneously, flipping the grain particles outward, and the grain turning robot moves toward the head. At the same time, the grain turning wheel 140 can also throw the grain outward, improving the turning efficiency. To turn, the two spiral wheels rotate in the same direction.

[0054] The present invention adopts the spiral drive principle. The grain turning robot can turn the grain during driving, and grain turning wheels are added to the two transmission shaft ends of the robot respectively to increase the grain turning depth and efficiency. The grain turning robot has a simple overall structure, light weight, and does not damage the grain. The left and right spiral wheels of the grain turning robot are each divided into two sections. The driving device is arranged in the middle of the two left-handed sections. The overall center displacement centroid of the robot is more reasonable, and the driving is stable. A high blade-to-shaft ratio spiral wheel is adopted to increase the contact between the blades and the grain. Compared with the spiral shafts (floating drum shafts) with medium and low blade ratios (P / D between 1 and 2, h / D between 0.1 and 0.2), it can improve the driving force (driving power) and increase the grain turning efficiency.

[0055] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A grain turning robot, characterized in that: include: frame; Two sets of spiral wheels are respectively arranged on both sides of the frame; Wherein, each set of the spiral wheels comprises: a first spiral wheel and a second spiral wheel; the first spiral wheel and the second spiral wheel are coaxially spaced apart; The first spiral wheel and the second spiral wheel respectively include: a core shaft and a plurality of spiral blades; The plurality of spiral blades are spirally wound in the same direction and arranged on the outside of the core shaft; the ratio of the pitch P of the spiral blade to the outer diameter D of the core shaft satisfies P / D≥4, and the ratio of the height h of the spiral blade to the shaft diameter D satisfies h / D≥0.5; The spiral blades of the first spiral wheel and the second spiral wheel in the same group have the same rotation direction, and the spiral blades of the two first spiral wheels have opposite rotation directions; Two driving devices are provided corresponding to the two sets of spiral wheels in a one-to-one manner; The driving device is located between the first spiral wheel and the second spiral wheel in the same group, and both ends of the output shaft of the driving device extend to the outside of the driving device and are connected to the core shaft of the first spiral wheel and the core shaft of the second spiral wheel; Two sets of transmission shafts, which are arranged in a one-to-one correspondence with the two sets of spiral wheels; Wherein, each group of the transmission shafts includes: a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are coaxially fixedly connected to both ends of the output shaft respectively; Two grain turning wheels are coaxially connected to the two second transmission shafts in a one-to-one correspondence; the grain turning wheels are provided with a plurality of grain turning blades, and the grain turning blades are arranged at intervals along the circumference of the grain turning wheels; Wherein, the second spiral wheel is located between the driving device and the grain turning wheel; Grain turning wheel includes: The grain turning wheel shaft is a hollow shaft; the grain turning wheel shaft is coaxially sleeved on the second transmission shaft at one end away from the driving device; Wherein, the grain turning blades are fixedly connected to the outer wall of the grain turning wheel shaft; The grain turning blade is a rectangular blade, one side of which is fixedly connected to the grain turning wheel shaft, and the connecting side of the rectangular blade and the grain turning wheel shaft is parallel to the axial direction of the grain turning wheel shaft; The grain turning blades are evenly spaced along the circumference of the grain turning wheel shaft.

2. The grain turning robot according to claim 1, characterized in that: The output shafts of the two driving devices are arranged in parallel.

3. The grain turning robot according to claim 2, characterized in that: The core shaft is a hollow shaft. The core shaft of the first spiral wheel is sleeved on the first transmission shaft, and the core shaft of the second spiral wheel is sleeved on the second transmission shaft.

4. The grain turning robot according to claim 3, characterized in that: The core shaft of the first spiral wheel and the first transmission shaft are connected via keys, as are the core shaft of the second spiral wheel and the second transmission shaft.

5. The grain turning robot according to claim 4, characterized in that: One end of the grain turning wheel shaft is closed, and the other end has an internal thread; Wherein, the end of the second transmission shaft has an external thread, and the grain turning wheel shaft is connected to the second transmission shaft through a thread.

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