Box body valve connecting rod opening and closing device and box type cotton picker

Abstract

The utility model discloses a box body valve connecting rod opening and closing device and a box type cotton picker. Comprising a supporting rack, a cotton box rotationally arranged on the supporting rack and used for storing crops, and a valve rotationally arranged on the cotton box and used for opening or closing a cotton discharging opening of the cotton box. The driving assembly is respectively connected with the supporting rack and the cotton box and is used for driving the cotton box to rotate relative to the supporting rack so as to enable the cotton box to tip over and discharge or horizontally store materials; the driving assembly is respectively hinged with the cotton box, the valve and the supporting rack and is used for adjusting the opening and closing angle of the valve relative to the cotton box; the connecting rod opening and closing assembly is used for opening or closing the cotton unloading opening of the cotton box along with the rotation of the cotton box, so that the complexity of a driving system in the box-type cotton picker adopting the device is reduced, the reliability of the box-type cotton picker is improved, external impurities can be prevented from entering the cotton box or cotton in the cotton box is prevented from spilling to the outside as much as possible, the practicability is high, and the practicability is high. The method is suitable for wide popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of cotton harvesting equipment, and in particular to an adjustable connecting rod opening and closing assembly for a box body flap. In addition, the utility model also relates to a box-type cotton picker including the above adjustable connecting rod opening and closing assembly for the box body flap. Background Art

[0002] With the development of society and the progress of technology, agricultural products such as cotton are usually harvested by agricultural machinery and equipment, so as to reduce the labor intensity of cotton farmers, reduce losses and waste, and bring significant economic benefits to agricultural production.

[0003] At present, the main cotton harvesting equipment includes box-type cotton pickers and baling cotton pickers. Among them, box-type cotton pickers are more flexible in design and use, can adapt to cotton fields with different planting patterns and row spacings, have more advantages in some specific areas or small cotton fields, and the initial purchase cost of box-type cotton pickers is relatively low, so they have been widely used.

[0004] The box-type cotton picker mainly collects the picked cotton through a cotton box and is equipped with an automatic control system for the cotton box flap. When the cotton picker reaches the cotton unloading position and starts the cotton unloading program, the flap will automatically open to the preset maximum position to prepare for the smooth unloading of cotton. However, this unloading method often requires a power source to drive the flap to open, making the overall drive system relatively complex. Once an error occurs in the drive program, it may be impossible to unload the cotton, and the overall reliability is relatively low; moreover, errors may gradually accumulate during the design, manufacturing, and assembly of components such as the cotton box and the flap, resulting in a gap between the cotton box and the flap after the flap is closed. During transportation, impurities may pass through the gap and enter the cotton box, requiring further impurity removal, increasing the harvesting cost, or cotton may spill out from the gap to the outside, resulting in cotton waste. Summary of the Utility Model

[0005] The utility model provides an opening and closing device for a connecting rod of a box body flap and a box-type cotton picker to solve the technical problems that the flap of the cotton box on the existing box-type cotton picker needs to be driven by a power source when opening and closing, and there may be a gap between the cotton box and the flap after the flap is closed.

[0006] According to one aspect of the present utility model, a connecting rod opening and closing device for a box body flap is provided, which includes a support frame, a cotton box rotatably arranged on the support frame for storing crops, a flap rotatably arranged on the cotton box for opening or closing the discharging opening of the cotton box, a rotation driving assembly respectively connected to the support frame and the cotton box for driving the cotton box to rotate relative to the support frame so that the cotton box tilts for discharging or stores materials horizontally, and a connecting rod opening and closing assembly respectively hinged to the cotton box, the flap and the support frame for adjusting the opening and closing angle of the flap relative to the cotton box so that the flap automatically opens or closes the discharging opening of the cotton box as the cotton box rotates.

[0007] As a further improvement of the above technical solution:

[0008] Further, the connecting rod opening and closing assembly includes a telescopic assembly with a telescopically adjustable length and hinged to the support frame, a first connecting rod respectively hinged to the telescopic assembly and the cotton box, and a second connecting rod respectively hinged to the free end of the flap and the telescopic assembly.

[0009] Further, the telescopic assembly includes a first telescopic rod, a second telescopic rod, and an adjusting sleeve respectively threadedly connected to the first telescopic rod and the second telescopic rod for driving the first telescopic rod and the second telescopic rod to approach or separate from each other by rotation, and the thread directions on the first telescopic rod and the second telescopic rod are opposite.

[0010] Further, a first positioning nut threadedly connected to the first telescopic rod is used to abut against the adjusting sleeve to prevent the first telescopic rod and the second telescopic rod from approaching each other; and / or a second positioning nut threadedly connected to the second telescopic rod is used to abut against the adjusting sleeve to prevent the first telescopic rod and the second telescopic rod from approaching each other.

[0011] Further, there are two connecting rod opening and closing assemblies, and the two connecting rod opening and closing assemblies are arranged oppositely on the opposite sides of the cotton box.

[0012] Further, the support frame includes a horizontally arranged horizontal support portion, an inclined support portion fixedly connected to the horizontal support portion and arranged obliquely, and inclined mounting edges respectively fixedly connected to the inclined support portion and the horizontal support portion and located on the side of the cotton box. The upper end of the inclined support portion is hinged to the cotton box, and the inclined mounting edge is connected to the rotation driving assembly.

[0013] Further, the rotation driving assembly includes a first hinge seat arranged on the inclined mounting edge, a second hinge seat arranged on the side wall of the cotton box, and a telescopic driving member respectively hinged to the first hinge seat and the second hinge seat.

[0014] Further, there are two inclined mounting edges, and the two inclined mounting edges are arranged oppositely on the opposite sides of the cotton box, and the rotation driving assembly and the inclined mounting edge are arranged in one-to-one correspondence.

[0015] Furthermore, the support frame also includes a horizontal connecting plate arranged in the horizontal direction and fixedly connected to the inclined mounting edge and the inclined supporting portion respectively; and / or the support frame also includes a vertical supporting plate arranged in the vertical direction and fixedly connected to the inclined mounting edge and the horizontal supporting portion respectively.

[0016] According to another aspect of the utility model, a box-type cotton picker is also provided, which includes the above-mentioned box valve connecting rod opening and closing device.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses a box body valve connecting rod opening and closing device, supports the cotton box by a supporting frame, and then stores the harvested crops by the cotton box. During normal harvesting operation, the cotton box is placed horizontally relative to the supporting frame to store materials horizontally. When it is moved to the unloading location, the driving and rotating assembly drives the cotton box to rotate relative to the supporting frame so that the cotton box can be tilted to unload materials. At this time, the cotton unloading opening of the cotton box is arranged downward, and the valve is turned downward relative to the cotton box under the action of gravity to open the cotton unloading opening, and the valve is pulled by the connecting rod opening and closing assembly so that the valve is opened and closed at an appropriate angle relative to the cotton box, thereby allowing the crops to be unloaded smoothly from the cotton unloading opening. After the crops are unloaded, the driving and rotating assembly drives the cotton box to rotate in the opposite direction relative to the supporting frame so that the cotton box is placed horizontally relative to the supporting frame. At this time, the connecting rod opening and closing assembly generates a pulling force under the action of gravity to pull the valve to rotate in a direction close to the cotton box, so that the valve closes the cotton unloading opening, thereby allowing the crops to be unloaded smoothly from the cotton unloading opening. Crops can be stored during the process, thereby realizing automatic opening and closing of the valve in the absence of a power source; in addition, the opening and closing angle of the valve relative to the cotton box is adjusted by the connecting rod opening and closing assembly to ensure that the opening and closing angle of the valve relative to the cotton box when the cotton unloading port is opened is appropriate, and the opening and closing angle of the valve relative to the cotton box when the inclined cotton port is closed can be made zero, thereby eliminating the accumulated errors in the design, manufacturing and assembly processes, and avoiding that there is still a gap between the cotton box and the valve when the cotton box stores materials horizontally; this solution realizes the automatic opening or closing of the valve or the cotton unloading port of the cotton box by the coordinated cooperation of the support frame, the cotton box, the valve, the driving assembly and the connecting rod opening and closing assembly. Compared with the prior art, this solution reduces the complexity of the driving system in the box-type cotton picker using the device, improves the reliability of the box-type cotton picker, and can avoid foreign impurities from entering the cotton box or the cotton in the cotton box from spilling out to the outside as much as possible. It has strong practicality and is suitable for wide promotion and application.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic structural view of the box body flap link opening and closing device in the preferred embodiment of the present utility model during horizontal material storage;

[0022] Figure 2 is a partial schematic structural view of the box body flap link opening and closing device in the preferred embodiment of the present utility model during tipping and discharging;

[0023] Figure 3 is a schematic structural view of the telescopic assembly in the box body flap link opening and closing device in the preferred embodiment of the present utility model.

[0024] Legend description:

[0025] 100, support frame; 110, horizontal support part; 120, inclined support part; 130, inclined installation edge; 140, horizontal connecting plate; 150, vertical support plate; 200, cotton box; 300, flap; 400, rotation drive assembly; 410, first hinge seat; 420, second hinge seat; 430, telescopic drive member; 500, link opening and closing assembly; 510, telescopic assembly; 511, first telescopic rod; 512, second telescopic rod; 513, adjusting sleeve; 514, first positioning nut; 515, second positioning nut; 520, first connecting rod; 530, second connecting rod. Detailed implementation manners

[0026] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0027] As Figure 1-2 shown, the box body flap link opening and closing device of this embodiment includes a support frame 100, a cotton box 200 for storing crops rotatably arranged on the support frame 100, a flap 300 rotatably arranged on the cotton box 200 for opening or closing the cotton discharging port of the cotton box 200, a rotation drive assembly 400 respectively connected to the support frame 100 and the cotton box 200 for driving the cotton box 200 to rotate relative to the support frame 100 so that the cotton box 200 can tip and discharge or horizontally store materials, and a link opening and closing assembly 500 respectively hinged to the cotton box 200, the flap 300 and the support frame 100 for adjusting the opening and closing angle of the flap 300 relative to the cotton box 200 so that the flap 300 can automatically open or close the cotton discharging port of the cotton box 200 as the cotton box 200 rotates.

[0028] As Figure 1-2As shown, specifically, the box valve connecting rod opening and closing device of the utility model supports the cotton box 200 through the support frame 100, and then stores the harvested crops through the cotton box 200. During normal harvesting operation, the cotton box 200 is placed horizontally relative to the support frame 100 to store materials horizontally; when moving to the unloading location, the driving assembly 400 drives the cotton box 200 to rotate relative to the support frame 100, so that the cotton box 200 is tilted to unload materials. At this time, the cotton unloading port of the cotton box 200 is arranged downward, and the valve 300 is relative to the cotton box 200 under the action of gravity. The cotton unloading port is flipped downward to open the cotton unloading port, and the valve 300 is pulled by the connecting rod opening and closing assembly 500 to make the valve 300 open and close at a proper angle relative to the cotton box 200, so that the crops can be unloaded smoothly from the cotton unloading port. After the crops are unloaded, the driving assembly 400 drives the cotton box 200 to rotate in the opposite direction relative to the supporting frame 100, so that the cotton box 200 is placed horizontally relative to the supporting frame 100. At this time, the connecting rod opening and closing assembly 500 generates a pulling force under the action of gravity to pull the valve 300 to rotate in the direction close to the cotton box 200, so that the valve 300 is closed. The cotton unloading port can be used to store crops during the harvesting process, thereby realizing the automatic opening and closing of the valve 300 without a power source; in addition, the opening and closing angle of the valve 300 relative to the cotton box 200 is adjusted by the connecting rod opening and closing assembly 500 to ensure that the opening and closing angle of the valve 300 relative to the cotton box 200 when the cotton unloading port is opened is appropriate, and the opening and closing angle of the valve 300 relative to the cotton box 200 when the valve 300 closes the oblique cotton port can be zero, thereby eliminating the accumulated errors in the design, manufacturing and assembly processes, and avoiding the cotton box 200 and the valve 300 from being in contact when the cotton box 200 is stored horizontally. There is still a gap between the doors 300; this solution realizes the automatic opening or closing of the cotton unloading port of the cotton box 200 by the coordinated cooperation of the support frame 100, the cotton box 200, the valve 300, the drive assembly 400 and the connecting rod opening and closing assembly 500. Compared with the prior art, the complexity of the driving system in the box-type cotton picker using this device is reduced, the reliability of the box-type cotton picker is improved, and the external impurities can be prevented from entering the cotton box 200 or the cotton in the cotton box 200 from spilling out. It is highly practical and suitable for wide promotion and application.

[0029] like Figure 1-2As shown in the figure, in this embodiment, the connecting rod opening and closing assembly 500 includes a telescopic assembly 510 whose length can be telescopically adjusted and is hinged to the support frame 100, a first connecting rod 520 respectively hinged to the telescopic assembly 510 and the cotton box 200, and a second connecting rod 530 respectively hinged to the free end of the flap 300 and the telescopic assembly 510. Specifically, when the cotton box 200 is horizontally arranged on the support frame 100, under the action of gravity, the telescopic assembly 510, the first connecting rod 520, and the second connecting rod 530 move downward, and the included angle between the first connecting rod 520 and the second connecting rod 530 becomes smaller, so as to pull the flap 300 to rotate towards the direction close to the cotton box 200, thereby closing the cotton discharging port on the cotton box 200; when the cotton box 200 is obliquely arranged on the support frame 100 and the cotton discharging port is arranged downward, under the action of gravity, the telescopic assembly 510, the first connecting rod 520, and the second connecting rod 530 move downward, and the included angle between the first connecting rod 520 and the second connecting rod 530 becomes larger, so that the flap 300 rotates away from the cotton box 200, thereby opening the cotton discharging port on the cotton box 200, and making the opening and closing angle of the flap 300 relative to the cotton box 200 appropriate, so that when the cotton box 200 is horizontally arranged on the support frame 100, the flap 300 can close the cotton discharging port under the action of the connecting rod opening and closing assembly 500; and when the cotton box 200 is horizontally arranged on the support frame 100 and the flap 300 closes the cotton discharging port, the length of the telescopic assembly 510 is the smallest, and the length of the telescopic assembly 510 can be increased to increase the opening and closing angle of the flap 300 relative to the cotton box 200 during discharging, so as to ensure that the crops are smoothly discharged from the cotton discharging port, so that the opening and closing angle of the flap 300 relative to the cotton box 200 can be changed within a certain range according to the discharging requirements, and the discharging efficiency is guaranteed. It should be understood that if the lengths of the connecting rods in the connecting rod opening and closing assembly 500 are all fixed, during assembly, the components may interfere with each other, and the assembly difficulty is large. However, in this application, the length is adjusted by the telescopic assembly 510 with adjustable length, effectively avoiding the interference between the components of the connecting rod opening and closing assembly 500 during assembly, thereby greatly reducing the assembly difficulty of the connecting rod opening and closing assembly 500.

[0030] As Figure 3As shown in the figure, in this embodiment, the telescopic assembly 510 includes a first telescopic rod 511, a second telescopic rod 512, and an adjusting sleeve 513 that is threadedly connected to the first telescopic rod 511 and the second telescopic rod 512 respectively and is used to drive the first telescopic rod 511 and the second telescopic rod 512 to approach or move away from each other by rotation. The thread directions on the first telescopic rod 511 and the second telescopic rod 512 are opposite. Specifically, since the first telescopic rod 511 is interfered by the support frame 100 and cannot rotate, and the second telescopic rod 512 is interfered by the first connecting rod 520 and the second connecting rod 530 and cannot rotate, and because the thread directions on the first telescopic rod 511 and the second telescopic rod 512 are opposite, when the adjusting sleeve 513 rotates at this time, the first telescopic rod 511 and the second telescopic rod 512 approach each other to reduce the length of the telescopic assembly 510, or the first telescopic rod 511 and the second telescopic rod 512 move away from each other to increase the length of the telescopic assembly 510, thereby adjusting the opening and closing angle of the valve 300 relative to the cotton box 200.

[0031] As Figure 1-2 shown in the figure, in this embodiment, the first telescopic rod 511 is respectively hinged to the first connecting rod 520 and the second connecting rod 530, and the second telescopic rod 512 is hinged to the support frame 100.

[0032] As Figure 3 shown in the figure, in this embodiment, a first positioning nut 514 is threadedly connected to the first telescopic rod 511 and is used to abut against the adjusting sleeve 513 to prevent the first telescopic rod 511 and the second telescopic rod 512 from approaching each other. Specifically, when the first positioning nut 514 is threadedly connected to the first telescopic rod 511 and abuts against the adjusting sleeve 513, the adjusting sleeve 513 cannot drive the first telescopic rod 511 and the second telescopic rod 512 to approach each other and reduce the length of the telescopic assembly 510 when rotating, so that the minimum length of the telescopic assembly 510 is fixed, and thus the opening and closing angle of the valve 300 relative to the cotton box 200 can be fixed according to the discharging requirement, that is, by ensuring that when the telescopic assembly 510 is at the minimum length, the opening and closing angle of the valve 300 relative to the cotton box 200 meets the discharging requirement.

[0033] As Figure 3As shown in the figure, in this embodiment, a second positioning nut 515 is threadedly connected to the second telescopic rod 512 and is used to abut against the adjusting sleeve 513 to prevent the first telescopic rod 511 and the second telescopic rod 512 from approaching each other. Specifically, when the second positioning nut 515 is threadedly connected to the second telescopic rod 512 and abuts against the adjusting sleeve 513, the adjusting sleeve 513 cannot drive the first telescopic rod 511 and the second telescopic rod 512 to approach each other and reduce the length of the telescopic assembly 510 when rotating, so that the minimum length of the telescopic assembly 510 is fixed. Thus, according to the discharging requirement, the opening and closing angle of the flap 300 relative to the cotton box 200 can be fixed, that is, by ensuring that when the telescopic assembly 510 is at the minimum length, the opening and closing angle of the flap 300 relative to the cotton box 200 meets the discharging requirement.

[0034] In this embodiment, there are two link opening and closing assemblies 500, and the two link opening and closing assemblies 500 are arranged oppositely on the opposite sides of the cotton box 200. Specifically, the opening and closing angle of the flap 300 relative to the cotton box 200 is adjusted by the two link opening and closing mechanisms at the same time, so that the flap 300 automatically opens or closes the cotton discharging port of the cotton box 200 as the cotton box 200 rotates, thereby improving the stability of the movement and the reliability of the overall structure.

[0035] As Figure 2 shown in the figure, in this embodiment, the support frame 100 includes a horizontally arranged horizontal support portion 110, an inclined support portion 120 fixedly connected to the horizontal support portion 110 and arranged obliquely, and an inclined mounting edge 130 fixedly connected to the inclined support portion 120 and the horizontal support portion 110 and located on the side of the cotton box 200. The upper end of the inclined support portion 120 is hinged to the cotton box 200, and the inclined mounting edge 130 is connected to the driving and rotating assembly 400. Specifically, the support frame 100 supports the cotton box 200 through the horizontal support portion 110, then is hinged to the cotton box 200 through the inclined support portion 120, and the driving and rotating assembly 400 is installed through the inclined mounting edge 130, so as to drive the cotton box 200 to rotate relative to the inclined support portion 120 through the driving and rotating assembly 400, thereby realizing tipping discharging. Optionally, the shape of the horizontal support portion 110 and the inclined support portion 120 after being connected to each other matches the outer wall shape of the cotton box 200 to improve the stability of the cotton box 200 during horizontal material storage.

[0036] As Figure 2As shown, in this embodiment, the driving assembly 400 includes a first hinge seat 410 arranged on the inclined mounting edge 130, a second hinge seat 420 arranged on the side wall of the cotton box 200, and a telescopic driving member 430 respectively hinged to the first hinge seat 410 and the second hinge seat 420. Specifically, the telescopic driving member 430 is installed by cooperating with the first hinge seat 410 and the second hinge seat 420, and then the telescopic driving member 430 works to drive the cotton box 200 to rotate relative to the inclined support portion 120, thereby realizing tipping and unloading. Optionally, the telescopic driving member 430 is one of an oil cylinder, a gas cylinder or an electric push rod.

[0037] In this embodiment, two inclined mounting edges 130 are provided, and the two inclined mounting edges 130 are arranged on opposite sides of the cotton box 200, and the driving and rotating components 400 and the inclined mounting edges 130 are arranged one by one. Specifically, two driving and rotating components 400 are installed through two inclined mounting plates, and then the two driving and rotating components 400 work simultaneously to drive the cotton box 200 to rotate, so as to ensure sufficient power.

[0038] like Figure 2 As shown, in this embodiment, the support frame 100 further includes a horizontal connecting plate 140 arranged in the horizontal direction and respectively fixedly connected to the inclined mounting edge 130 and the inclined support portion 120. Specifically, the horizontal connecting plate 140 allows the inclined mounting edge 130 and the inclined support portion 120 to be compactly connected to each other, and improves the bearing strength of the inclined mounting edge 130, thereby improving the overall structural reliability.

[0039] like Figure 2 As shown, in this embodiment, the support frame 100 further includes a vertical support plate 150 arranged in the vertical direction and respectively fixedly connected to the inclined mounting edge 130 and the horizontal support portion 110. Specifically, the vertical support plate 150 makes the inclined mounting edge 130 and the horizontal support portion 110 compactly connected to each other, and improves the bearing strength of the inclined mounting edge 130, thereby improving the overall structural reliability.

[0040] The box-type cotton picker of this embodiment includes the above-mentioned box valve connecting rod opening and closing device. Specifically, by adopting the above-mentioned box valve connecting rod opening and closing device in the box-type cotton picker, the complexity of the driving system in the box-type cotton picker is reduced, the reliability of the box-type cotton picker is improved, and foreign impurities can be prevented from entering the cotton box 200 as much as possible, or the cotton in the cotton box 200 is prevented from spilling out of the outside world. It is highly practical and suitable for wide promotion and application.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A box body flap link opening and closing device, characterized in that It includes a support frame (100), a cotton box (200) rotatably arranged on the support frame (100) for storing crops, a flap (300) rotatably arranged on the cotton box (200) for opening or closing the discharge opening of the cotton box (200), a rotation driving assembly (400) respectively connected to the support frame (100) and the cotton box (200) for driving the cotton box (200) to rotate relative to the support frame (100) so that the cotton box (200) can be tilted for discharging or horizontally storing materials, and a connecting rod opening and closing assembly (500) respectively hinged to the cotton box (200), the flap (300) and the support frame (100) for automatically opening or closing the discharge opening of the cotton box (200) by adjusting the opening and closing angle of the flap (300) relative to the cotton box (200) when the cotton box (200) rotates.

2. The box body flap link opening and closing device according to claim 1, characterized in that, The connecting rod opening and closing assembly (500) includes a telescopic assembly (510) with adjustable telescopic length and hinged to the support frame (100), a first connecting rod (520) respectively hinged to the telescopic assembly (510) and the cotton box (200), and a second connecting rod (530) respectively hinged to the free end of the flap (300) and the telescopic assembly (510).

3. The box body flap link opening and closing device according to claim 2, characterized in that, The telescopic assembly (510) includes a first telescopic rod (511), a second telescopic rod (512), and an adjusting sleeve (513) respectively threadedly connected to the first telescopic rod (511) and the second telescopic rod (512) for driving the first telescopic rod (511) and the second telescopic rod (512) to approach or move away from each other by rotation. The thread directions on the first telescopic rod (511) and the second telescopic rod (512) are opposite.

4. The box body flap link opening and closing device according to claim 3, characterized in that, A first positioning nut (514) is threadedly connected to the first telescopic rod (511) for abutting against the adjusting sleeve (513) to prevent the first telescopic rod (511) and the second telescopic rod (512) from approaching each other; and / or A second positioning nut (515) is threadedly connected to the second telescopic rod (512) for abutting against the adjusting sleeve (513) to prevent the first telescopic rod (511) and the second telescopic rod (512) from approaching each other.

5. The box body flap link opening and closing device according to any one of claims 1-4, characterized in that, There are two connecting rod opening and closing assemblies (500), and the two connecting rod opening and closing assemblies (500) are arranged oppositely on the opposite sides of the cotton box (200).

6. The box body flap link opening and closing device according to any one of claims 1-4, characterized in that, The support frame (100) includes a horizontally arranged horizontal support part (110), an inclined support part (120) fixedly connected to the horizontal support part (110) and arranged obliquely, and an inclined installation edge (130) respectively fixedly connected to the inclined support part (120) and the horizontal support part (110) and located on the side of the cotton box (200). The upper end of the inclined support part (120) is hinged to the cotton box (200), and the inclined installation edge (130) is connected to the rotation driving assembly (400).

7. The box body flap link opening and closing device according to claim 6, characterized in that, The rotation driving assembly (400) includes a first hinge seat (410) arranged on the inclined installation edge (130), a second hinge seat (420) arranged on the side wall of the cotton box (200), and a telescopic driving member (430) respectively hinged to the first hinge seat (410) and the second hinge seat (420).

8. The box body flap link opening and closing device according to claim 7, characterized in that, There are two inclined mounting edges (130), and the two inclined mounting edges (130) are arranged oppositely on the opposite sides of the bale breaker (200), and the driving and rotating components (400) and the inclined mounting edges (130) are arranged in one-to-one correspondence.

9. The box body flap link opening and closing device according to claim 8, characterized in that, The support frame (100) further includes a horizontal connecting plate (140) arranged in the horizontal direction and fixedly connected to the inclined mounting edge (130) and the inclined support portion (120) respectively; and / or The support frame (100) further includes a vertical support plate (150) arranged in the vertical direction and fixedly connected to the inclined mounting edge (130) and the horizontal support portion (110) respectively.

10. A box-type cotton picker, characterized in that, It includes the box door link opening and closing device according to any one of claims 1-9.

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