A shear conveyor for a cabbage harvester

Abstract

The application discloses a shearing type conveying device of a cabbage combine harvester, which comprises a frame, flexible conveying wheel sets and a driving assembly; the flexible conveying wheel set comprises a structural beam, a driving wheel, a driven wheel, a flexible belt and a rotating shaft, the driving wheel and the driven wheel are both mounted on the structural beam, the flexible belt is wound around the driving wheel and the driven wheel, and the rotating shaft is mounted in the middle of the structural beam; a cross beam is arranged in the frame, two flexible conveying wheel sets are hinged to the cross beam through respective rotating shafts, and a cabbage conveying channel is formed between the two flexible conveying wheel sets; the driving assembly drives the two flexible conveying wheel sets to swing with the rotating shafts as the swing center lines; the shearing type conveying device sets the two flexible conveying wheel sets as rotatable and swingable mechanisms, so that the flexible conveying wheel sets can actively clamp cabbages, stable conveying of the cabbages is realized, and the cabbages are less likely to fall between the two flexible belts.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery, in particular to a shearing type conveying device of a cabbage combine harvester. BACKGROUND

[0002] The Chinese patent No. 202110143687.4, "Cabbage harvester", discloses a cabbage harvester, which comprises a walking mechanism, a harvesting mechanism and a conveying mechanism, the harvesting mechanism comprising a harvesting rack, a pulling device, a cutting assembly, a flexible clamping conveying mechanism and a raking mechanism, Figure 1 The flexible clamping conveying mechanism involved in the patent is shown, which comprises a driving roller, a driven roller and a flexible belt, the flexible belt being wound around the driving roller and the driven roller, and a cabbage conveying channel being formed between the two flexible clamping conveying mechanisms; during operation, the cabbage is horizontally moved while being clamped by the left and right flexible belts.

[0003] In the above-mentioned prior art cabbage harvester, the position of the entire flexible clamping conveying mechanism is fixed, i.e. the distance between the two flexible belts is a fixed value, and the clamping of the cabbage mainly relies on the elasticity of the flexible belts and the action of the internal tensioning rollers. The defect of this flexible clamping conveying mechanism lies in that the actual size of the cabbage varies, and the clamping ability of the two flexible belts for cabbages of different sizes is unstable, and sometimes the cabbage may fall off. Especially at the head and tail positions of the cabbage conveying channel, in order to facilitate the entry and exit of the cabbage, the head and tail of the cabbage conveying channel are in the shape of a horn, and when the cabbage is at these positions, if the cooperation with other components is slightly poor, it is easy to cause unsuccessful clamping of the cabbage, resulting in the cabbage falling off and being blocked in the cabbage conveying channel. SUMMARY

[0004] The technical problem to be solved by the present application is that the clamping ability of the conveying mechanism in the prior art cabbage harvester is unstable, especially at the head and tail regions of the horn-shaped head and tail, which is prone to cause the cabbage to fall off.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a shearing type conveying device of a cabbage combine harvester, comprising a frame, a flexible conveying wheel set and a driving assembly;

[0006] The flexible conveying wheel set comprises a structural beam, a driving wheel, a driven wheel, a flexible belt and a rotating shaft, the driving wheel and the driven wheel being mounted on the structural beam, the flexible belt being wound around the driving wheel and the driven wheel, and the rotating shaft being mounted at the middle part of the structural beam;

[0007] The frame is provided with a cross beam, and the two flexible conveying wheel sets are hinged to the cross beam through their respective rotating shafts, and a cabbage conveying channel is formed between the two flexible conveying wheel sets;

[0008] The driving assembly drives two flexible conveying wheel groups to swing around the rotation shaft as the swing center line;

[0009] The shearing conveying device of the present application adopts two flexible conveying wheel groups to horizontally convey cabbages, and the cabbage conveying channel formed between the two flexible conveying wheel groups is generally designed as a horn shape at the head and tail regions; the difference of the present application is that the two flexible conveying wheel groups are no longer fixed mechanisms, but mechanisms that can actively rotate around their rotation shafts; when the cabbages reach the horn region at the head of the cabbage conveying channel, the two flexible conveying wheel groups rotate to make the heads of the two flexible conveying wheel groups close to each other and actively clamp the cabbages; in the subsequent process of the cabbages translating, the two flexible conveying wheel groups also adaptively rotate, and the active adjustment action can make the two flexible conveying wheel groups stably clamp the cabbages throughout the whole process until the cabbages leave the shearing conveying device of the present application.

[0010] Specifically, the driving assembly comprises a linear driver, a first connecting rod and a second connecting rod, the main body of the linear driver is fixed on the frame, the end of the first connecting rod, the end of the second connecting rod and the telescopic rod of the linear driver are hinged at one place, and the other end of the first connecting rod and the other end of the second connecting rod are respectively hinged with the structural beams of the two flexible conveying wheel groups; the linear driver is a pneumatic cylinder, a hydraulic cylinder or an electric push rod; the telescopic rod of the linear driver drives the two flexible conveying wheel groups to swing through the first connecting rod and the second connecting rod.

[0011] Since the shearing conveying device of the present application needs to swing the two flexible conveying wheel groups in time according to the position of the cabbages, the present application needs to configure corresponding mechanisms to detect the position of the cabbages; the present application adopts the method of installing a photoelectric detector on the frame, which is used to detect whether the cabbages enter the cabbage conveying channel; generally, the photoelectric detector should be aligned with the entrance position of the cabbage conveying channel. When the photoelectric detector detects that the cabbages enter the cabbage conveying channel, the driving assembly drives the two flexible conveying wheel groups to swing so that the two flexible belts clamp the cabbages from both sides and drive the cabbages to translate; in the process of the cabbages translating, the driving assembly drives the two flexible conveying wheel groups to swing according to the setting so that the two flexible belts stably clamp the cabbages throughout the whole process.

[0012] Further, the flexible conveying wheel group further comprises a tensioning wheel assembly installed on the structural beam, which pries open the flexible belt to keep the flexible belt in a tensioned state; the tensioning wheel assembly comprises a plug rod, a tensioning wheel and a first spring, the tensioning wheel is installed on the plug rod, the plug rod is inserted into the structural beam, and the first spring is sleeved on the plug rod. The tensioning wheel not only can pry open the flexible belt to form a specific shape, but also can improve the deformation ability of the elastic belt, so that the flexible belt can better clamp the cabbages.

[0013] Further, the flexible conveying wheel set further comprises a motor, the motor is installed on the structural beam, and the motor drives the driving wheel to rotate.

[0014] In the prior art cabbage harvester, if the cabbage conveying channel between the two flexible conveying wheel sets is blocked, one of the conventional methods is to change the rotating direction of the driving wheel, so that the two flexible conveying wheel sets rotate reversely, and the blocked cabbage is discharged as much as possible, but this method is not always effective, and sometimes the blocked cabbage cannot be discharged. The shear type conveying device of the present application can also use the same method to discharge the blocked cabbage by using the reversely rotating flexible conveying wheel sets.

[0015] The present application provides a technical solution that can increase the "cabbage discharging" capacity of the flexible conveying wheel set, and the specific method is as follows: the cross beam is hollow inside, the second spring and two sliding blocks are arranged in the cross beam, two baffles are arranged in the cross beam, the two sliding blocks are respectively located at the two ends of the second spring, and the second spring pushes and extrudes the two sliding blocks so that the two sliding blocks are respectively close to the two baffles; the rotating shaft of the flexible conveying wheel set is inserted into the sliding block, and a limiting mechanism for limiting the rotating angle of the rotating shaft is arranged between the sliding block and the rotating shaft. The limiting mechanism comprises a swing rod and a swing groove arranged in the sliding block, the swing rod is fixed on the surface of the rotating shaft along the radial direction of the rotating shaft, and the swing rod is located in the swing groove. The limiting mechanism limits the rotating angle of the rotating shaft through the swing rod and the swing groove, and further limits the swing angle of the flexible conveying wheel set.

[0016] When the shear type conveying device is working normally, the driving assembly drives the flexible conveying wheel set to swing to the limit position (the swing rod reaches the edge of the swing groove) at most, the sliding block is always close to the baffle due to the pushing action of the second spring, and the position of the sliding block does not change; obviously, the rotating shaft is always in a fixed position and does not move.

[0017] When the cabbage is blocked, the flexible conveying wheel set rotates reversely to discharge the cabbage, at this stage, the linear driver not only drives the two flexible conveying wheel sets to swing normally, but also continues to push and pull the flexible conveying wheel set through the first connecting rod and the second connecting rod after the flexible conveying wheel set swings to the limit position; since the flexible conveying wheel set has already swung to the limit position and cannot continue to swing, the force of the first connecting rod and the second connecting rod on the flexible conveying wheel set will force the sliding block to translate, so that the two flexible conveying wheel sets are close to each other, the cabbage conveying channel is narrowed, and then the two flexible conveying wheel sets clamp the blocked cabbage in the middle, so as to discharge the cabbage.

[0018] Beneficial effects: (1) The scissor type conveying device of the present application sets two flexible conveying wheel groups as rotatable swing mechanism, so that the flexible conveying wheel group can actively clamp the cabbage, realize stable cabbage conveying and reduce cabbage falling. (2) The scissor type conveying device of the present application is configured with a photoelectric detector to actively find the cabbage entering the cabbage conveying channel, so that the flexible conveying wheel group can swing in time according to the position of the cabbage, and ensure the stable clamping and conveying of the cabbage. (3) The scissor type conveying device of the present application is configured with a tensioning wheel to open the flexible belt, so that the flexible belt can form a specific shape and deform according to the cabbage, thereby stably clamping the cabbage. (4) The scissor type conveying device of the present application installs the rotating shaft of the flexible conveying wheel group on the sliding block, so that the driving assembly can not only drive the two flexible conveying wheel groups to swing regularly, but also can pull the two flexible conveying wheel groups closer when the cabbage is blocked, facilitating the reverse rotation of the scissor type conveying wheel group of the present application to "spit the cabbage". BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the conveying mechanism of the cabbage harvester in the prior art.

[0020] Figure 2 is a perspective view of the scissor type conveying device of embodiment 1.

[0021] Figure 3 is a top view of the scissor type conveying device of embodiment 1.

[0022] Figure 4 is an enlarged view of A of Figure 3 .

[0023] Figure 5 is a work flow chart of the scissor type conveying device of embodiment 1 (one).

[0024] Figure 6 is a work flow chart of the scissor type conveying device of embodiment 1 (two).

[0025] Figure 7 is a top view of the scissor type conveying device of embodiment 2.

[0026] Figure 8 is a top view (partly cut) of the scissor type conveying device of embodiment 2.

[0027] Figure 9 is an enlarged view of B of Figure 8 .

[0028] Figure 10 is a top view (another working state) of the scissor type conveying device of embodiment 2.

[0029] Figure 11 is an enlarged view of C of Figure 10 .

[0030] Among them: 100, frame; 110, crossbeam; 120, second spring; 130, slider; 140, baffle; 200, flexible conveying wheel group; 210, structural beam; 220, driving wheel; 230, driven wheel; 240, flexible belt; 250, rotating shaft; 260, tensioning wheel assembly; 261, insertion rod; 262, tensioning wheel; 263, first spring; 270, motor; 300, driving assembly; 310, linear drive; 320, first connecting rod; 330, second connecting rod; 400, cabbage conveying channel; 500, cabbage; 600, limiting mechanism; 610, rocker arm; 620, swing groove. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to specific embodiments.

[0032] Example 1

[0033] like Figures 2 to 4 As shown, the scissor-type conveying device of the cabbage combine harvester of this embodiment includes a frame 100 , a flexible conveying wheel set 200 and a driving assembly 300 .

[0034] The flexible conveying wheel assembly 200 includes a structural beam 210, a driving wheel 220, a driven wheel 230, a flexible belt 240, a rotating shaft 250, a tensioning wheel assembly 260, and a motor 270. The driving wheel 220 and the driven wheel 230 are both mounted on the structural beam 210. The flexible belt 240 is wound around the driving wheel 220 and the driven wheel 230. The rotating shaft 250 is mounted in the middle of the structural beam 210. The motor 270 is mounted on the structural beam 210. The motor 270 drives the driving wheel 220 to rotate. Figure 4 As shown, the tensioning wheel assembly 260 includes an insertion rod 261, a tensioning wheel 262 and a first spring 263. The tensioning wheel 262 is installed on the insertion rod 261, the insertion rod 261 is inserted into the structural beam 210, and the first spring 263 is sleeved on the insertion rod 261. The tensioning wheel 262 stretches the flexible belt 240 so that the flexible belt 240 remains in a tensioned state and the flexible belt 240 is stretched into a set shape.

[0035] A crossbeam 110 is provided in the frame 100, and two flexible conveying wheel groups 200 are hinged on the crossbeam 110 through their respective rotating shafts 250. A cabbage conveying channel 400 is formed between the two flexible conveying wheel groups 200. The shape of the flexible belt 240 makes the cabbage inlet and the cabbage outlet of the cabbage conveying channel 400 both have a trumpet shape.

[0036] The driving assembly 300 drives the two flexible conveying wheel groups 200 to swing around the swing center line of the rotation shaft 250; the driving assembly 300 comprises a linear driver 310, a first connecting rod 320 and a second connecting rod 330, the main body of the linear driver 310 is fixed on the frame 100, the end of the first connecting rod 320, the end of the second connecting rod 330 and the telescopic rod of the linear driver 310 are hinged at one place, the other end of the first connecting rod 320 and the other end of the second connecting rod 330 are respectively hinged with the structural beam 210 of the two flexible conveying wheel groups 200; the linear driver 310 in the embodiment can be any one of a pneumatic cylinder, a hydraulic cylinder or an electric push rod; the telescopic rod of the linear driver 310 drives the two flexible conveying wheel groups 200 to swing through the first connecting rod 320 and the second connecting rod 330.

[0037] The embodiment is provided with a photoelectric detector on the frame 100 for detecting whether the cabbage enters the cabbage conveying channel 400, and the photoelectric detector is aligned with the entrance position of the cabbage conveying channel 400. As shown in Figure 5 When the photoelectric detector detects that the cabbage 500 enters the cabbage conveying channel 400, the driving assembly 300 drives the two flexible conveying wheel groups 200 to swing so that the two flexible belts 240 clamp the cabbage 500 from both sides and drive the cabbage 500 to translate. Figure 6 As shown in

[0038] Embodiment 2

[0039] As shown in Figures 7 to 9 The shear type conveying device of the embodiment is basically the same as that of embodiment 1, and the difference is only in the hinged mode of the rotation shaft 250 of the flexible conveying wheel group 200 and the cross beam 110.

[0040] As shown in Figure 9As shown, in this embodiment, the inside of the crossbeam 110 is hollow, and the crossbeam 110 is provided with the second spring 120 and two sliders 130, and the crossbeam 110 is provided with two baffles 140, and the two sliders 130 are respectively located at the two ends of the second spring 120, and the second spring 120 pushes the two sliders 130 so that the two sliders 130 are respectively close to the two baffles 140. The rotating shaft 250 of the flexible conveying wheel set 200 is inserted into the slider 130, and a limiting mechanism 600 limiting the rotation angle of the rotating shaft 250 is arranged between the slider 130 and the rotating shaft 250. The limiting mechanism 600 includes a swing rod 610 and a swing groove 620 arranged in the inside of the slider 130, and the swing rod 610 is fixed on the surface of the rotating shaft 250 along the radial direction of the rotating shaft 250, and the swing rod 610 is located in the swing groove 620. The limiting mechanism 600 limits the rotation angle of the rotating shaft 250 through the swing rod 610 and the swing groove 620, thereby limiting the swing angle of the flexible conveying wheel set 200.

[0041] The difference between the above and embodiment 1 is only used to reverse "spit vegetables" when the conveying device is blocked. Whether it is the conveying mechanism of the cabbage harvester in the prior art or the shear type conveying device in embodiment 1, when the vegetables are blocked, the conventional method is to change the rotation direction of the driving wheel 220, so that the two flexible conveying wheel sets 200 rotate in the opposite direction, and try to spit the blocked cabbage from the entrance. In addition to "reversing the rotation of the driving wheel 220", the shear type conveying device of this embodiment will also adopt the following method when the vegetables are blocked:

[0042] (1) As shown in Figure 8 , the telescopic rod of the linear actuator 310 goes down, and the two flexible conveying wheel sets 200 are deflected; as shown in Figure 9 , the swing rod 610 at this time has been deflected to the edge limit position of the swing groove 620, that is, the two flexible conveying wheel sets 200 have been deflected to the limit angle;

[0043] (2) As shown in Figure 10 , the telescopic rod of the linear actuator 310 continues to go down according to the hollow arrow, at this time, since the two flexible conveying wheel sets 200 have been deflected to the limit angle and cannot continue to be deflected; then the force exerted by the linear actuator 310 on the flexible conveying wheel set 200 will make the two sliders 130 Figure 11 as shown in Figure 10 , the two flexible conveying wheel sets 200 in Figure 8 are closer to each other than the two flexible conveying wheel sets 200 in , and the interval is smaller, which is easier to clamp the blocked cabbage, and is conducive to the shear type conveying device to spit the blocked cabbage in the opposite direction.

[0044] It should be noted that the scissor conveying device of the present embodiment is completely consistent with the working principle of the embodiment 1 when the normal work does not occur the problem of blocking vegetables, the linear driver 310 will not "over-pull" the two flexible conveying wheel groups 200, and the two flexible conveying wheel groups 200 will not produce the approaching movement action to each other.

[0045] Although the embodiments of the present application are described in the specification, these embodiments are only as a hint, and should not limit the protection scope of the present application. Various omissions, substitutions and changes made within the scope of the purpose of the present application should be included in the protection scope of the present application.

Claims

1. A shear conveyor for a cabbage harvester, characterized by: The frame, the flexible conveying wheel set and the driving assembly are included. The flexible conveying wheel set includes a structural beam, a driving wheel, a driven wheel, a flexible belt and a rotating shaft, the driving wheel and the driven wheel are both mounted on the structural beam, the flexible belt is wound on the driving wheel and the driven wheel, and the rotating shaft is mounted at the middle part of the structural beam. The frame is provided with a cross beam, and the two flexible conveying wheel sets are hinged on the cross beam through the respective rotating shafts, and a cabbage conveying channel is formed between the two flexible conveying wheel sets. The driving assembly drives the two flexible conveying wheel sets to swing with the rotating shafts as the swing center lines. The cabbage conveying channel is formed between the two flexible conveying wheel sets, the head region and the tail region of the cabbage conveying channel are in the shape of a trumpet mouth, when the cabbages enter the cabbage conveying channel, the driving assembly drives the two flexible conveying wheel sets to swing so that the two flexible belts clamp the cabbages from both sides and drive the cabbages to translate, in the process of translation of the cabbages, the driving assembly drives the two flexible conveying wheel sets to swing according to the setting so that the two flexible belts stably clamp the cabbages throughout the process, until the cabbages leave from the outlet of the cabbage conveying channel.

2. The shear conveyor of a cabbage harvester according to claim 1, characterized in that: The driving assembly includes a linear actuator, a first connecting rod and a second connecting rod, the main body of the linear actuator is fixed on the frame, the end of the first connecting rod, the end of the second connecting rod and the telescopic rod of the linear actuator are hinged at one place, and the other end of the first connecting rod and the other end of the second connecting rod are respectively hinged with the structural beams of the two flexible conveying wheel sets.

3. The shear conveyor of a cabbage harvester according to claim 2, characterized in that: The linear actuator is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

4. The shear conveyor of a cabbage harvester according to claim 3, characterized in that: The photoelectric detector is further included, the photoelectric detector is mounted on the frame, and the photoelectric detector is used for detecting whether the cabbages enter the cabbage conveying channel.

5. The shear conveyor of a cabbage harvester according to claim 4, characterized in that: The flexible conveying wheel set further includes a tensioning wheel assembly, the tensioning wheel assembly is mounted on the structural beam, and the tensioning wheel assembly pries open the flexible belt so that the flexible belt remains in a tensioned state.

6. The shear conveyor of a cabbage harvester according to claim 5, characterized in that: The tensioning wheel assembly includes a plug rod, a tensioning wheel and a first spring, the tensioning wheel is mounted on the plug rod, the plug rod is inserted into the structural beam, and the first spring is sleeved on the plug rod.

7. The shear conveyor of a cabbage harvester according to claim 6, characterized in that: The flexible conveying wheel set further includes a motor, the motor is mounted on the structural beam, and the motor drives the driving wheel to rotate.

8. The shear conveyor of a cabbage harvester according to claim 7, characterized in that: The cross beam is internally hollow, the cross beam is provided with a second spring and two sliding blocks, the cross beam is provided with two baffles, the two sliding blocks are respectively located at the two ends of the second spring, the second spring pushes and pushes the two sliding blocks so that the two sliding blocks are tightly close to the two baffles, the rotating shaft of the flexible conveying wheel set is inserted into the sliding block, and a limiting mechanism for limiting the rotation angle of the rotating shaft is arranged between the sliding block and the rotating shaft.

9. The shear conveyor of a cabbage harvester according to claim 8, characterized in that: The limiting mechanism includes a swing rod and a swing groove arranged in the sliding block, the swing rod is fixed on the surface of the rotating shaft along the radial direction of the rotating shaft, and the swing rod is located in the swing groove.

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