A follow-up frying wheel with single motor driving extension and retraction movement and rotation movement

Abstract

The invention discloses a follow-up traveling blasting wheel with extension and retraction movement and rotation movement driven by a single motor, which relates to the technical field of agricultural machinery devices and solves the problems of insufficient mechanical flexibility, lack of power, easy damage to onions at a fixed angle and occupation of the space of the whole vehicle for breaking ridge soil. In the invention, the blasting wheel is composed of a main wheel and a secondary wheel, and the follow-up walking function is realized by the cooperation of the inner and outer rings of the bearings on the main wheel and the secondary wheel. The function of the blasting wheel being able to rotate and blast is realized by the cooperation of the crank slider support arm, the main wheel and the secondary wheel, and a worm gear device, etc. The motor drives the rotating block body to rotate clockwise, and the crank slider support arm is extended. When the claw abuts against the stop block, the blasting wheel rotates clockwise as a whole; the motor drives the rotating block body to rotate counterclockwise, and the crank slider support arm is contracted. When the crank slider support arm is completely contracted, the blasting wheel rotates counterclockwise as a whole. When the crank slider support arm is completely extended, the motor drives the blasting wheel to rotate as a whole, so as to realize the function of digging soil.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery devices, and in particular to a follow-up traveling explosion wheel driven by a single motor for extension and retraction movement and rotation movement. Background Art

[0002] Green onions are an important economic crop in my country and are widely planted in many places due to their unique advantages. The traditional manual harvesting method is time-consuming and inefficient, and is no longer suitable for the large-scale planting trend of green onions. Existing green onion harvesters are mainly used for simple digging and harvesting of green onions, which can improve the harvesting efficiency of green onions, play a role in timely harvesting, saving labor and reducing labor intensity, but they cannot adapt to a variety of planting patterns, green onion varieties and harvesting sizes, and achieve high-performance multi-functional operations.

[0003] Although the existing mechanical harvesting methods have improved efficiency to a certain extent, the machinery itself has some shortcomings. The digging shovels of most current harvesters are located below or on one side of the root of the green onion, and are driven forward by a traction device. Some digging shovels shake while moving forward. This method can dig out the green onions, but these digging shovels are not flexible enough under different soil conditions and are only used for shallower (within 20 cm) green onion harvesting. The digging resistance is large and cannot achieve the digging of deeper green onions. In addition, due to the different growth conditions of green onions, ridge formation and planting depths are different, and the fixed digging shovel entering the soil at an angle that can easily damage the root and stem of the green onion, reducing harvesting efficiency and increasing energy consumption. That is, there are still problems such as insufficient mechanical flexibility for breaking ridges, lack of power, fixed angles that easily damage green onions, and occupying space on the entire vehicle. Summary of the invention

[0004] In view of the above-mentioned problems that the mechanical ridge breaking machine is not flexible enough, lacks power, easily damages onions at a fixed angle, and occupies space in the entire vehicle, the purpose of the present invention is to provide a follow-up traveling blasting wheel that can be driven by a single motor for extension and rotation.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A follow-up traveling frying wheel driven by a single motor for extension and retraction and rotation, comprising: an auxiliary wheel 1, a main wheel 2, a crank slider arm 3 and a motor 6, wherein the auxiliary wheel 1 is connected to the main wheel 2, the crank slider arm 3 is arranged between the auxiliary wheel 1 and the main wheel 2, and a plurality of slideways 11 are arranged on the rear side of the auxiliary wheel 1;

[0007] The crank slider arm 3 includes: a rotating block body 31, a crank 32 and a claw 33. Multiple cranks 32 are arranged around the rotating block body 31, and one end of each crank 32 is rotatably connected to the rotating block body 31. A claw 33 is provided in each slide 11, and the other end of each crank 32 is rotatably connected to a claw 33. The secondary wheel 1, the main wheel 2 and the rotating block body 31 are coaxially arranged, and the motor 6 is used to drive the rotating block body 31 to rotate and thereby drive multiple claws 33 to move in the slide 11.

[0008] The above-mentioned single-motor driven follow-up traveling explosive wheel with extension and retraction movement and rotation movement, wherein the auxiliary wheel 1 includes: an auxiliary wheel inner ring, an auxiliary wheel outer ring, an auxiliary wheel bearing and an auxiliary wheel rubber ring, the auxiliary wheel inner ring and the auxiliary wheel outer ring are coaxially arranged, the auxiliary wheel inner ring and the auxiliary wheel outer ring are rotatably connected through the auxiliary wheel bearing, and the outer periphery of the auxiliary wheel outer ring is connected to the auxiliary wheel rubber ring.

[0009] The above-mentioned single-motor driven follow-up traveling explosive wheel for extension and retraction movement and rotation movement, wherein the main wheel 2 includes: a main wheel inner ring 23, a main wheel middle ring, a main wheel outer ring, a main wheel outer side bearing, a main wheel inner side bearing and a main wheel rubber ring, the main wheel inner ring 23, the main wheel middle ring and the main wheel outer ring are coaxially arranged, the main wheel inner ring 23 and the inner periphery of the main wheel middle ring are rotatably connected through the main wheel inner side bearing, the main wheel outer ring and the outer periphery of the main wheel middle ring are rotatably connected through the main wheel outer side bearing, and the outer periphery of the main wheel outer ring is connected with the main wheel rubber ring.

[0010] The above-mentioned single-motor driven follow-up traveling blasting wheel for extension and retraction movement and rotation movement, wherein, also includes: a connecting shaft 4, the connecting shaft 4 includes: a connecting shaft portion 41 and a connecting disc 42, the connecting shaft portion 41 and the connecting disc 42 are coaxially arranged, one end of the connecting shaft portion 41 is connected to the connecting disc 42, and the other end of the connecting shaft portion 41 is connected to the output end of the motor 6.

[0011] The above-mentioned single-motor driven follow-up traveling explosive wheel with extension and retraction movement and rotation movement, wherein the connecting disc 42, the main wheel inner ring 23 and the rotating block body 31 are coaxially arranged, the main wheel inner ring 23 is arranged between the connecting disc 42 and the rotating block body 31, and the connecting disc 42, the main wheel inner ring 23 and the rotating block body 31 are connected by multiple first fasteners.

[0012] The above-mentioned single-motor driven follow-up traveling explosive wheel with extension and retraction movement and rotation movement, wherein a plurality of first assembly holes for installing a first fastener are opened on the connecting disc 42, a plurality of second assembly holes 22 for installing the first fastener are opened on the main wheel inner ring 23, and a plurality of third assembly holes for installing the first fastener are opened on the rotating block body 31, the plurality of first assembly holes are arranged at equal intervals around the axis of the connecting disc 42, the plurality of second assembly holes 22 are arranged at equal intervals around the axis of the main wheel inner ring 23, and the plurality of third assembly holes are arranged at equal intervals around the axis of the rotating block body 31.

[0013] The above-mentioned single-motor driven follow-up traveling explosive wheel with extension and retraction movement and rotation movement, wherein a plurality of first clamping parts 12 are provided on the outer periphery of the rear side of the inner ring of the secondary wheel, and a plurality of second clamping parts 21 are provided on the outer periphery of the front side of the middle ring of the main wheel, and each second clamping part 21 is clamped in a first clamping part 12 and connected by a second fastener.

[0014] In the above-mentioned single-motor driven follow-up traveling blasting wheel with extension and retraction movement and rotation movement, a stopper 13 is provided on the inner wall of the outer end of each slideway 11, and the stopper 13 is used to limit the claw 33 in the slideway 11.

[0015] The above-mentioned single-motor driven follow-up traveling blasting wheel for extension and retraction movement and rotation movement, among others, further comprises: a first rotating shaft portion 34 and a second rotating shaft portion 35, a plurality of fourth assembly holes are provided on the rotating block body 31, a first rotating shaft portion 34 is installed in each fourth assembly hole, one end of each crank 32 is rotatably connected to the rotating block body 31 through a first rotating shaft portion 34, and the other end of each crank 32 is rotatably connected to a claw 33 through a second rotating shaft portion 35.

[0016] The above-mentioned single-motor driven follow-up traveling blasting wheel with extension and retraction movement and rotation movement also includes: a mounting seat 5, the motor 6 is mounted on the mounting seat 5, the mounting seat 5 is mounted on the harvesting body through a worm gear device, and the worm gear device is used to lift the follow-up traveling blasting wheel.

[0017] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0018] (1) In the present invention, the blasting wheel is composed of a main wheel and a secondary wheel. The inner and outer rings of the bearings on the main wheel and the secondary wheel cooperate to realize the follow-up walking function. The blasting wheel can rotate and blast open by cooperating with the crank slider support arm, the main wheel and the secondary wheel, and the worm gear device.

[0019] (2) In the present invention, the outer ring is used for follow-up walking, and a rubber ring is attached to its outer contour to increase the friction with the ground to prevent slipping. The motor drives the inner ring of the main wheel to rotate, and then drives the crank slider arm to unfold, which is used for rotating and breaking the ground;

[0020] (3) In the present invention, the motor drives the rotating block body to rotate clockwise, the crank slider arm is extended, and when the claw abuts against the block, the blasting wheel as a whole rotates clockwise; the motor drives the rotating block body to rotate counterclockwise, the crank slider arm is contracted, when the crank slider arm is completely contracted, the blasting wheel as a whole rotates counterclockwise, and when the crank slider arm is fully extended, the motor drives the blasting wheel as a whole to realize the function of digging soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic structural diagram of a follow-up blasting wheel that drives the expansion and contraction movement and the rotation movement with a single motor.

[0022] Figure 2 It is a front view of a follow-up traveling frying wheel that is driven by a single motor to perform extension and retraction and rotation movements according to the present invention.

[0023] Figure 3 It is a side view of a follow-up traveling frying wheel that is driven by a single motor to perform extension and retraction motion and rotation motion according to the present invention.

[0024] Figure 4 It is an internal schematic diagram of a follow-up traveling frying wheel that is driven by a single motor to perform extension and retraction and rotation movements according to the present invention.

[0025] Figure 5 The present invention is a schematic structural diagram of a crank slider support arm of a follower traveling frying wheel that is driven by a single motor for extension and retraction movement and rotation movement.

[0026] Figure 6 It is a front view of a crank slider support arm of a follower traveling frying wheel that is driven by a single motor to perform extension and retraction motion and rotation motion according to the present invention.

[0027] Figure 7 The invention discloses a rear view of a crank slider support arm of a follower traveling frying wheel that is driven by a single motor for expansion and contraction movement and rotation movement.

[0028] Figure 8 The present invention is a schematic structural diagram of a main wheel of a follower traveling blasting wheel that drives the expansion and contraction movement and the rotation movement with a single motor.

[0029] Fig. 9 The present invention is a schematic structural diagram of a secondary wheel of a follower traveling blasting wheel that is driven by a single motor for extension and retraction movement and rotation movement.

[0030] Fig.10 The present invention is a schematic structural diagram of a connecting shaft of a follower traveling frying wheel that drives expansion and contraction movement and rotation movement with a single motor.

[0031] Fig.11 The present invention is a schematic diagram of the motion of a crank slider mechanism of a follower traveling frying wheel that is driven by a single motor for expansion and contraction motion and rotation motion.

[0032] Fig.12 The invention discloses a self-locking principle diagram of a crank slider of a follower traveling frying wheel that drives the expansion and contraction movement and the rotation movement with a single motor.

[0033] Fig.13 The present invention is a 120° principle diagram of a crank slider crank of a follow-up traveling frying wheel that drives expansion and contraction movement and rotation movement with a single motor.

[0034] In the accompanying drawings: 1. secondary wheel; 2. main wheel; 3. crank slider arm; 4. connecting shaft; 5. mounting seat; 6. motor; 11. slideway; 12. first clamping part; 13. stopper; 21. second clamping part; 22. second assembly hole; 23. main wheel inner ring; 31. rotating block body; 32. crank; 33. claw; 34. first rotating shaft part; 35. second rotating shaft part; 41. connecting shaft part; 42. connecting disc. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] Please refer to Figures 1 to 13 As shown, a single motor driven follow-up traveling frying wheel for extension and retraction motion and rotation motion is shown, wherein, it comprises: a secondary wheel 1, a main wheel 2, a crank slider arm 3 and a motor 6, the secondary wheel 1 is connected to the main wheel 2, the crank slider arm 3 is arranged between the secondary wheel 1 and the main wheel 2, and a plurality of slideways 11 are arranged on the rear side of the secondary wheel 1;

[0037] The crank slider arm 3 includes: a rotating block body 31, a crank 32 and a claw 33. Multiple cranks 32 are arranged around the rotating block body 31, one end of each crank 32 is rotatably connected to the rotating block body 31, and a claw 33 is provided in each slide 11. The other end of each crank 32 is rotatably connected to a claw 33. The secondary wheel 1, the main wheel 2 and the rotating block body 31 are coaxially arranged. The motor 6 is used to drive the rotating block body 31 to rotate and then drive the multiple claws 33 to move in the slide 11.

[0038] Further, in a preferred embodiment, the secondary wheel 1 includes: a secondary wheel inner ring, a secondary wheel outer ring, a secondary wheel bearing and a secondary wheel rubber ring. The secondary wheel inner ring and the secondary wheel outer ring are coaxially arranged, the secondary wheel inner ring and the secondary wheel outer ring are rotatably connected through the secondary wheel bearing, the outer periphery of the secondary wheel outer ring is connected to the secondary wheel rubber ring, and multiple slideways 11 are located on the secondary wheel inner ring.

[0039] Further, in a preferred embodiment, the main wheel 2 includes: a main wheel inner ring 23, a main wheel middle ring, a main wheel outer ring, a main wheel outer side bearing, a main wheel inner side bearing and a main wheel rubber ring. The main wheel inner ring 23, the main wheel middle ring and the main wheel outer ring are coaxially arranged. The main wheel inner ring 23 and the inner periphery of the main wheel middle ring are rotatably connected via the main wheel inner side bearing. The main wheel outer ring and the outer periphery of the main wheel middle ring are rotatably connected via the main wheel outer side bearing. The outer periphery of the main wheel outer ring is connected to the main wheel rubber ring.

[0040] Furthermore, in a preferred embodiment, it also includes: a connecting shaft 4, the connecting shaft 4 includes: a connecting shaft portion 41 and a connecting disk 42, the connecting shaft portion 41 and the connecting disk 42 are coaxially arranged, one end of the connecting shaft portion 41 is connected to the connecting disk 42, and the other end of the connecting shaft portion 41 is connected to the output end of the motor 6.

[0041] Further, in a preferred embodiment, the connecting disc 42, the main wheel inner ring 23 and the rotating block body 31 are coaxially arranged, the main wheel inner ring 23 is arranged between the connecting disc 42 and the rotating block body 31, and the connecting disc 42, the main wheel inner ring 23 and the rotating block body 31 are connected by multiple first fasteners.

[0042] Furthermore, in a preferred embodiment, a plurality of first assembly holes for installing a first fastener are provided on the connecting disk 42, a plurality of second assembly holes 22 for installing the first fastener are provided on the main wheel inner ring 23, a plurality of third assembly holes for installing the first fastener are provided on the rotating block body 31, the plurality of first assembly holes are arranged at equal intervals around the axis of the connecting disk 42, the plurality of second assembly holes 22 are arranged at equal intervals around the axis of the main wheel inner ring 23, and the plurality of third assembly holes are arranged at equal intervals around the axis of the rotating block body 31.

[0043] Furthermore, in a preferred embodiment, a plurality of first clamping portions 12 are provided on the rear outer periphery of the inner ring of the secondary wheel, and a plurality of second clamping portions 21 are provided on the front outer periphery of the middle ring of the main wheel. Each second clamping portion 21 is clamped in a first clamping portion 12 and connected through a second fastener.

[0044] Furthermore, in a preferred embodiment, a stopper 13 is provided on the inner wall of the outer end of each slideway 11 , and the stopper 13 is used to limit the position of the claw 33 in the slideway 11 .

[0045] Furthermore, in a preferred embodiment, it also includes: a first rotating shaft portion 34 and a second rotating shaft portion 35, a plurality of fourth assembly holes are provided on the rotating block body 31, a first rotating shaft portion 34 is installed in each fourth assembly hole, one end of each crank 32 is rotatably connected to the rotating block body 31 through a first rotating shaft portion 34, and the other end of each crank 32 is rotatably connected to a claw 33 through a second rotating shaft portion 35.

[0046] Furthermore, in a preferred embodiment, it also includes: a mounting seat 5, a motor 6 mounted on the mounting seat 5, and the mounting seat 5 is mounted on the harvesting body through a worm gear device, and the worm gear device is used to lift the follow-up moving blasting wheel.

[0047] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0048] The present invention also has the following implementation modes based on the above:

[0049] In a further embodiment of the present invention, a method of first rotary tilling and dividing the soil and then digging and shaking the soil is adopted, and a blasting wheel is used as a core component of the green onion harvesting operation.

[0050] In a further embodiment of the present invention, the blasting wheel is composed of a main wheel 2 and a secondary wheel 1, the main wheel 2 is composed of a main wheel inner ring 23, a main wheel middle ring, a main wheel outer ring, a main wheel outer bearing, and a main wheel inner bearing, and the secondary wheel 1 is composed of a secondary wheel inner ring, a secondary wheel outer ring, and a secondary wheel bearing. The present invention realizes the follow-up walking function through the cooperation of the inner and outer rings of the bearings on the main wheel 2 and the secondary wheel 1, and realizes the function that the blasting wheel can rotate and explode through the cooperation of the crank slider arm 3, the main wheel 2 and the secondary wheel 1, and the worm gear device. The outer ring is used for follow-up walking, and its outer contour is affixed with a rubber ring to increase the friction with the ground to prevent slipping; the motor 6 drives the main wheel inner ring 23 to rotate, and then drives the crank slider arm 3 to unfold, which is used for rotating to break the ground.

[0051] In a further embodiment of the present invention, the middle ring of the main wheel is connected to the inner ring of the secondary wheel to form a cavity, one side of the main wheel inner ring 23 is connected to the motor 6, and the other side of the main wheel inner ring 23 is connected to the crank slider arm 3 inside the cavity, the crank slider arm 3 is composed of a rotating block body 31, a crank 32 and a claw 33, the crank 32 can be extended in the cavity, and a plurality of slideways 11 are provided on the rear side of the secondary wheel 1, each claw 33 slides in a slideway 11, and the rotating block body 31 is driven to rotate by the motor 6 to push the plurality of cranks 32 to extend in the cavity, thereby pushing the plurality of claws 33 to slide toward the outside of the explosion wheel in the plurality of slideways 11 respectively, and a block 13 is provided in each slideway 11 to control the claw 33 to extend.

[0052] In a further embodiment of the present invention, the blasting wheel is installed on the harvesting equipment through a worm gear reducer. During daily driving, the motor 6 is not powered on, the claws 33 remain in a retracted state, the outer ring worm gear does not rotate, and the blasting wheel remains parallel to the other three wheels and moves with them; when the blasting wheel moves to the ridge, the blasting wheel is rotated and lifted by the worm gear reducer, usually by 30° to 45°, the motor 6 drives the inner ring 23 of the main wheel to rotate, the crank slider support arm 3 inside the blasting wheel is unfolded, and the claws 33 extend outward. When the claws 33 touch the block 13, the claws 33 stop extending outward, and at the same time, the torque of the motor 6 is transmitted to the secondary wheel 1, the inner ring of the secondary wheel drives the outer ring of the secondary wheel to rotate, and the outer ring of the secondary wheel drives the outer ring of the main wheel to rotate together, breaking the soil at the root of the green onion, thereby overcoming the resistance and breaking the green onion ridge with the least amount of soil attachment, achieving the effect of rotating and breaking the soil, loosening the green onion, and facilitating digging.

[0053] In a further embodiment of the present invention, the advantage of the blasting wheel is that it combines the traveling mechanism with the ground-breaking mechanism, so that the wheel has its own ground-breaking power, which can be used for walking and for breaking the ground stably without uneven ground-breaking. Only one motor 6 is needed to realize the functions of blasting and rotating the claw 33, which saves space and is economical and efficient.

[0054] In a further embodiment of the present invention, the blasting wheel blasting process is that the motor 6 drives the middle disc to rotate, and then the six cranks 32 are spread out, driving the end claws 33 to extend, and after a certain distance, the claws 33 hit the block 13 and stop extending, and the rotational force drives the entire blasting wheel to rotate and start digging the soil.

[0055] In a further embodiment of the present invention, the movement of the claw 33 in the frying wheel can be simplified to a crank slider mechanism, and the schematic diagram of the mechanism movement is as follows: Figures 11 to 13 As shown:

[0056] In a further embodiment of the present invention, Figure 6 A plane rectangular coordinate system is established at the center position of the middle crank slider support arm 3, with the positive direction of the y-axis pointing upward and the positive direction of the x-axis pointing rightward. The crank 32 moves between 0 and 120 degrees. Figure 6 The middle rotating block body 31 rotates counterclockwise by 120°, and the six claws 33 converge to Figure 3 The blasting wheel is composed of the secondary wheel 1 and the main wheel 2. At this time, the blasting wheel is in a contracted state. When the six claws 33 are in Figures 1 to 3 In the state shown, the rotating block body 31 rotates 120° in the opposite direction, and the six claws 33 extend from the frying wheel. At this time, the frying wheel is in the unfolded state. Figures 3 to 7 shown.

[0057] It can be seen from the movement that self-locking is most likely to occur when the crank 32 coincides with the y-axis. From the material data, it is known that the friction coefficient of PLA (polylactic acid) is between 0.5 and 0.7. Taking f=0.6, the equivalent friction angle of friction between PLA is

[0058] The remaining angles are 72.5°>30°, so the claws 33 will not self-lock during the explosion process.

[0059] When the crank 32 moves to 120°, the claw 33 hits the block 13 and starts to drive the frying wheel to rotate together. The pressure angle is calculated (because the claw 33 has stopped moving along the slide 11 at this time, the movement direction becomes tangential, that is, the downward direction in the figure):

[0060]

[0061] In a further embodiment of the present invention, the explosion wheel is installed on the worm gear reducer through the mounting seat 5, and the worm gear reducer is installed on the harvesting equipment. During daily driving, the explosion wheel is placed vertically as a whole, and its main wheel outer ring and the secondary wheel outer ring are in direct contact with the ground. The main wheel outer ring and the secondary wheel outer ring rotate as follower wheels. During this period, the main wheel inner ring 23 and the main wheel middle ring do not rotate with the main wheel outer ring or only rotate slightly under the action of friction, and the secondary wheel inner ring does not rotate with the secondary wheel outer ring or only rotates slightly under the action of friction. The main wheel outer ring and the secondary wheel outer ring are both installed with rubber rings to increase the friction during walking, reduce the wear on the main wheel outer ring and the secondary wheel outer ring, and realize the function of the explosion wheel as a follower wheel.

[0062] In a further embodiment of the present invention, when the blasting wheel moves onto the ridge, the worm gear reducer operates to lift the blasting wheel upward so that its axis forms an angle with the horizontal direction, and the angle range is about 30° to 45°. The worm gear reducer is used to lift the blasting wheel. The worm gear reducer has a self-locking function to prevent the angle between the axis of the blasting wheel and the horizontal direction from changing during operation.

[0063] In a further embodiment of the present invention, six slideways 11 are equidistantly provided on the inner ring of the secondary wheel around its axis, and six fourth assembly holes are provided on the rotating block body 31, and the six fourth assembly holes are equidistantly provided around the axis of the rotating block body 31, and a first rotating shaft portion 34 is installed in each of the fourth assembly holes, and one end of each crank 32 is rotatably connected to the rotating block body 31 through a first rotating shaft portion 34, and the other end of each crank 32 is rotatably connected to a claw 33 through a second rotating shaft portion 35, and the six cranks 32 have the same structural dimensions and the same orientation to avoid interference between multiple cranks 32 during the expansion of the crank slider arm 3, and the six claws 33 have the same structural dimensions and the same orientation, and when the crank slider arm 3 is fully expanded, the motor 6 drives the frying wheel to rotate as a whole, and the six claws 33 break the soil at the root of the green onion to achieve the function of digging the soil.

[0064] In a further embodiment of the present invention, each crank 32 has one end rotatably connected to the rotating block body 31 via a first rotating shaft portion 34, and the other end rotatably connected to a claw 33 via a second rotating shaft portion 35. Each claw 33 slides in a slide 11, and the axis of the first rotating shaft portion 34 and the axis of the second rotating shaft portion 35 of the crank 32 are located in a first plane. The cross-section of the slide 11 where the crank 32 is located is a second plane. During the expansion and contraction of the crank slider arm 3, the angle between the first plane and the second plane is always greater than 30°.

[0065] In a further embodiment of the present invention, each crank 32 is designed in three sections, multiple cranks 32 have the same size and specifications, multiple cranks 32 have the same orientation, and the angle between any two adjacent sections is 120° to avoid interference during the expansion and contraction process.

[0066] In a further embodiment of the present invention, each crank 32 is designed as an arc, multiple cranks 32 have the same size and specifications, and multiple cranks 32 have the same direction to avoid interference during the expansion and contraction process.

[0067] In a further embodiment of the present invention, only the angle between the plane where the two ends of the crank 32 are located and the cross section of the slideway 11 where it is located is designed, and the angle must always be greater than 30° to avoid self-locking, which causes the crank slider arm 3 to be unable to expand or contract.

[0068] In a further embodiment of the present invention, when the crank slider arm 3 is as Figure 6 In the arrangement shown, the motor 6 drives the rotating block body 31 to rotate clockwise, the crank slider arm 3 is extended, and when the claw 33 abuts against the stop block 13, the frying wheel as a whole rotates clockwise; the motor 6 drives the rotating block body 31 to rotate counterclockwise, the crank slider arm 3 is contracted, and when the crank slider arm 3 is completely contracted, the frying wheel as a whole rotates counterclockwise.

[0069] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A single motor driven follow-up frying wheel capable of extension, retraction and rotation, characterized in that: include: A secondary wheel (1), a main wheel (2), a crank slider support arm (3) and a motor (6), wherein the secondary wheel (1) and the main wheel (2) are connected, the crank slider support arm (3) is arranged between the secondary wheel (1) and the main wheel (2), and a plurality of slideways (11) are arranged on the rear side of the secondary wheel (1); The crank slider support arm (3) comprises: a rotating block body (31), a crank (32) and a claw (33); a plurality of the cranks (32) are arranged around the rotating block body (31); one end of each crank (32) is rotatably connected to the rotating block body (31); one claw (33) is arranged in each slideway (11); the other end of each crank (32) is rotatably connected to a claw (33); the secondary wheel (1), the main wheel (2) and the rotating block body (31) are coaxially arranged; the motor (6) is used to drive the rotating block body (31) to rotate and thereby drive the plurality of claws (33) to move in the slideway (11); The auxiliary wheel (1) comprises: an auxiliary wheel inner ring, an auxiliary wheel outer ring, an auxiliary wheel bearing and an auxiliary wheel rubber ring, the auxiliary wheel inner ring and the auxiliary wheel outer ring are coaxially arranged, the auxiliary wheel inner ring and the auxiliary wheel outer ring are rotatably connected via the auxiliary wheel bearing, and the outer circumference of the auxiliary wheel outer ring is connected to the auxiliary wheel rubber ring; The main wheel (2) comprises: a main wheel inner ring (23), a main wheel middle ring, a main wheel outer ring, a main wheel outer side bearing, a main wheel inner side bearing and a main wheel rubber ring. The main wheel inner ring (23), the main wheel middle ring and the main wheel outer ring are coaxially arranged. The inner peripheries of the main wheel inner ring (23) and the main wheel middle ring are rotatably connected via the main wheel inner side bearing. The outer peripheries of the main wheel outer ring and the main wheel middle ring are rotatably connected via the main wheel outer side bearing. The outer periphery of the main wheel outer ring is connected to the main wheel rubber ring. The invention also comprises: a connecting shaft (4), wherein the connecting shaft (4) comprises: a connecting shaft portion (41) and a connecting disc (42), wherein the connecting shaft portion (41) and the connecting disc (42) are coaxially arranged, one end of the connecting shaft portion (41) is connected to the connecting disc (42), and the other end of the connecting shaft portion (41) is connected to the output end of the motor (6).

2. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 1, characterized in that: The connecting disc (42), the main wheel inner ring (23) and the rotating block body (31) are coaxially arranged, the main wheel inner ring (23) is arranged between the connecting disc (42) and the rotating block body (31), and the connecting disc (42), the main wheel inner ring (23) and the rotating block body (31) are connected by a plurality of first fasteners.

3. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 2, characterized in that: A plurality of first assembly holes for mounting a first fastener are formed on the connecting disc (42), a plurality of second assembly holes (22) for mounting the first fastener are formed on the inner ring of the main wheel (23), and a plurality of third assembly holes for mounting the first fastener are formed on the rotating block body (31). The plurality of first assembly holes are arranged at equal intervals around the axis of the connecting disc (42), the plurality of second assembly holes (22) are arranged at equal intervals around the axis of the inner ring of the main wheel (23), and the plurality of third assembly holes are arranged at equal intervals around the axis of the rotating block body (31).

4. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 1, characterized in that: A plurality of first clamping parts (12) are provided on the rear outer periphery of the inner ring of the secondary wheel, and a plurality of second clamping parts (21) are provided on the front outer periphery of the middle ring of the main wheel. Each second clamping part (21) is clamped in a first clamping part (12) and connected via a second fastener.

5. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 1, characterized in that: A stopper (13) is provided on the inner wall of the outer end of each slideway (11), and the stopper (13) is used to limit the position of the claw (33) in the slideway (11).

6. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 1, characterized in that: Also includes: A first rotating shaft portion (34) and a second rotating shaft portion (35), a plurality of fourth assembly holes are provided on the rotating block body (31), a first rotating shaft portion (34) is installed in each fourth assembly hole, one end of each crank (32) is rotatably connected to the rotating block body (31) via a first rotating shaft portion (34), and the other end of each crank (32) is rotatably connected to a claw (33) via a second rotating shaft portion (35).

7. The single-motor driven follow-up frying wheel capable of extension, retraction and rotation according to claim 1, characterized in that: Also includes: The mounting seat (5) is provided with a motor (6) mounted on the mounting seat (5). The mounting seat (5) is mounted on the harvesting body through a worm gear device, and the worm gear device is used to lift the follow-up traveling blasting wheel.

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