Cotton picker

Abstract

The utility model discloses a problem that a handrail part of an existing cotton picker cannot be overturned and folded along with a platform. The cotton picker comprises a frame and a folding platform rotationally installed on the frame, the folding platform comprises a platform pedal, a handrail part and a folding mechanism, the platform pedal is rotationally connected with the frame, the handrail part is rotationally connected to the end, away from the frame, of the platform pedal, and the folding mechanism is rotationally connected to the end, away from the frame, of the platform pedal. The folding mechanism comprises a pull rod and a driving mechanism, the two ends of the pull rod are rotationally connected with the frame and the handrail part respectively, one end of the driving mechanism is connected with the frame, the other end of the driving mechanism is connected with any one of the platform pedal, the handrail part and the pull rod, and the folding platform has an unfolded state and a folded state. In the unfolded state, the platform pedal is unfolded, the handrail part is perpendicular to the platform pedal, and in the folded state, the driving mechanism pushes the platform pedal to turn over upwards to be folded.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cotton picker, especially has the folding platform's cotton picker. BACKGROUND

[0002] Cotton picker is large agricultural machinery, its whole car width is very fast, whole car transportation process, the width of cotton picker will exceed the road transportation limit width. Usually the platform of left and right sides of cotton picker is set to detachable, the platform of left and right sides of cotton picker is dismantled during the transportation process of cotton picker scene change, and the platform is installed back on the cotton picker after the cotton picker goes to the ground, but the dismounting and installation of the platform make the cotton picker need to spend a lot of additional time during the scene change.

[0003] There is a cotton picker platform that can be turned over and folded in the prior art (for reference, see Chinese utility model patent with publication number CN219961383U and the name of a cotton picker folding driving platform and cotton picker), but the handrail part of the platform cannot be turned over and folded with the platform, and the handrail part of the platform needs to be separately dismounted and fixed before and after folding, which still wastes time for operation. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cotton picker to solve the problem that the handrail part of the existing cotton picker cannot be turned over and folded with the platform.

[0005] In order to achieve the above technical target, the utility model provides a cotton picker, which comprises a vehicle frame and a folding platform rotatably mounted on the vehicle frame, and the folding platform comprises:

[0006] A platform pedal is rotatably connected to the vehicle frame.

[0007] A handrail part is rotatably connected to one end of the platform pedal away from the vehicle frame.

[0008] A folding mechanism comprises a pull rod and a driving mechanism, both ends of the pull rod are rotatably connected to the vehicle frame and the handrail part, one end of the driving mechanism is connected to the vehicle frame, and the other end is connected to any one of the platform pedal, the handrail part and the pull rod.

[0009] The folding platform has an open state and a folded state. In the open state, the platform pedal is flat, and the handrail part is perpendicular to the platform pedal. In the folded state, the driving mechanism pushes the platform pedal, the handrail part and the pull rod to turn over upwardly and fold.

[0010] The handrail part can be folded and turned up together with the platform pedal in the upward direction, so that the inner space of the cotton picking machine occupied by the handrail part in the folded state is reduced, the handrail part does not need to be separately disassembled and fixed before and after the folding of the platform pedal, the folding process of the folding platform of the cotton picking machine is simplified, and the time required for folding the folding platform of the cotton picking machine is reduced.

[0011] As preferred, the driving mechanism comprises a hydraulic cylinder, the frame is provided with a fixing seat, and two ends of the hydraulic cylinder are respectively rotatably connected with the fixing seat and any one of the platform pedal, the handrail part and the pull rod, the hydraulic cylinder comprises a cylinder body and a hydraulic rod which can be telescopically extended relative to the cylinder body, in the opened state, the hydraulic rod is retracted relative to the cylinder body, and in the folded state, the hydraulic rod is extended relative to the cylinder body.

[0012] By arranging the hydraulic cylinder, the folding platform can be automatically folded and opened, the operation convenience of the folding platform is improved, and the speed during the scene change of the cotton picking machine and the convenience are improved.

[0013] As preferred, in the opened state, the hydraulic cylinder is arranged below the platform pedal, and the hydraulic cylinder is upwardly inclined from one end close to the fixing seat to the other end.

[0014] By arranging the hydraulic cylinder below the platform pedal, the walking and operation of the staff on the platform pedal are not affected when the hydraulic cylinder is arranged on the platform pedal, and meanwhile, the hydraulic cylinder is upwardly inclined from one end close to the fixing seat to the other end, so that the movement of the hydraulic cylinder can generate an upward component force, thereby the hydraulic cylinder can push any one of the platform pedal, the handrail part and the pull rod to move upwardly and change from the working state to the folded state, and the folding of the folding platform is realized.

[0015] As preferred, the platform pedal is provided with a first reinforcing rib, and the driving mechanism is connected with the first reinforcing rib.

[0016] By arranging the driving mechanism on the platform pedal, the interference between the driving mechanism and the pull rod is avoided, so that the space is saved, and the strength of the stress point of the platform pedal is increased by arranging the first reinforcing rib, so that the stress point is not damaged due to fatigue after being folded and turned up for many times, and the service life of the platform pedal is improved.

[0017] As preferred, in the opened state, the pull rod is arranged below the platform pedal.

[0018] According to the technical scheme, the pull rod is located below the platform pedal in the open state, so that the folding mechanism arranged on the platform pedal does not affect the walking and operation of the staff on the platform pedal, and the car frame, the platform pedal, the handrail part and the pull rod are not crossed, thereby improving the stability during folding of the folding platform.

[0019] Preferably, the platform pedal rotates around a first rotation connection point with the car frame, the pull rod rotates around a second rotation connection point with the car frame, the platform pedal rotates around a third rotation connection point with the handrail part, and the pull rod rotates around a fourth rotation connection point with the handrail part, and the first rotation connection point, the second rotation connection point, the third rotation connection point and the fourth rotation connection point form four endpoints of a parallelogram.

[0020] According to the technical scheme, the car frame, the platform pedal, the handrail part and the pull rod form a four-link mechanism of a parallelogram, so that the handrail part can keep the upward movement with the angle unchanged relative to the car frame during movement of the four-link mechanism, and the platform pedal and the pull rod keep the synchronous rotation during folding, the handrail part is located on one side of the platform pedal after the platform pedal is folded, so that the width of the cotton picker in the folded state is reduced, and the handrail part does not interfere with the working parts of the cotton picker.

[0021] Preferably, the handrail part comprises a handrail body and a connecting plate, the connecting plate is fixed to one end of the handrail body close to the pull rod, and the end of the connecting plate away from the handrail body extends away from the car frame and is rotationally connected with the pull rod, and the connecting plate and the pull rod rotate around the fourth connection point.

[0022] Or,

[0023] The end of the handrail part close to the pull rod extends away from the car frame and is rotationally connected with the pull rod, and the handrail part and the pull rod rotate around the fourth connection point.

[0024] According to the technical scheme, on the one hand, the dead point during folding of the folding platform is avoided, so that the stability and reliability during folding of the folding platform are ensured, and on the other hand, the width of the cotton picker in the folded state is reduced, and the passability of the cotton picker during the transfer process is improved.

[0025] Preferably, an avoidance groove is arranged on the platform pedal, the lower end of the handrail part passes through the avoidance groove and is fixed to the lower end of the platform pedal, and the avoidance groove extends away from the car frame to accommodate the handrail part in the folded state.

[0026] According to the technical scheme, the handrail part and the platform pedal can rotate relative to each other, and the use reliability of the folding platform is improved.

[0027] Preferably, a second reinforcing rib is arranged on the platform step, and the handrail part is rotationally connected with the second reinforcing rib.

[0028] According to the above technical scheme, since the connection position of the platform step and the handrail part is also a stress point, the strength of the stress point is increased by arranging the second reinforcing rib, so that the force on the handrail part is prevented from acting on the platform step to cause the stress point to be damaged due to fatigue, and the service life of the platform step is improved.

[0029] Preferably, the platform step comprises a left platform step and a right platform step, the left platform step is arranged on the left side of the cotton picker, the right platform step is arranged on the right side of the cotton picker, and two sets of folding mechanisms are correspondingly arranged, in the unfolded state, the left platform step is unfolded on the left side of the cotton picker, and the right platform step is unfolded on the right side of the cotton picker, and in the folded state, the two sets of folding mechanisms drive the left platform step and the right platform step to be folded by being turned upward, respectively.

[0030] According to the above technical scheme, the left and right sides of the cotton picker are both provided with platform steps, so that the work of the staff is more convenient.

[0031] These features and advantages of the present application will be described in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 FIG. 1 is a schematic view of the left and right two folding platforms of the cotton picker in the embodiment of the present application;

[0033] Figure 2 FIG. 2 is an enlarged view of position A in FIG. 1; Figure 1

[0034] Figure 3 FIG. 3 is a schematic view of the platform step, the handrail part and the pull rod;

[0035] Figure 4 FIG. 4 is an enlarged view of position B in FIG. 3; Figure 3

[0036] FIG. 5 is a schematic view of the platform step, the handrail part and the pull rod in the working state; Figure 5

[0037] FIG. 6 is a schematic view of the platform step, the handrail part and the pull rod in the folded state; Figure 6

[0038] FIG. 7 is a schematic view of the platform step, the handrail part and the driving mechanism in the working state; Figure 7

[0039] FIG. 8 is a schematic view of the platform step, the handrail part and the driving mechanism in the folded state. Figure 8 ​​

[0040] Reference signs:

[0041] 10, frame, 11, hinge, 12, pull rod seat;

[0042] 100, folding platform, 110, platform step, 111, first rotating shaft, 1111, first rotating connection point, 112, first reinforcing rib, 113, second reinforcing rib, 114, surrounding edge, 115, air clearance groove, 116 opening, 120, handrail part, 121, handrail body, 122, connecting plate, 123, third rotating shaft, 1231, third rotating connection point, 124, fourth rotating shaft, 1241, fourth rotating connection point, 125, connecting shaft, 130, folding mechanism, 131, pull rod, 132, driving mechanism, 133, hydraulic cylinder, 1331, cylinder body, 1332, hydraulic rod, 134, fixing seat, 135, second rotating shaft, 1351, second rotating connection point. DETAILED DESCRIPTION

[0043] The technical solutions of the embodiments of the present application will be explained and described below in combination with the drawings of the embodiments of the present application. However, the following embodiments are only preferred embodiments of the present application, and are not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present application.

[0044] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" and "several" is two or more, unless otherwise explicitly limited.

[0046] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, the above terms can be understood according to the specific meaning of the utility model.

[0047] As Figures 1-6 The utility model discloses a cotton picker, including frame 10 and folding platform 100, folding platform 100 rotatablely installed on frame 10 and located the side of cotton picker. Folding platform 100 includes platform pedal 110 and handrail part 120, handrail part 120 rotationally connected at the end of platform pedal 110 away from frame 10. In order to avoid handrail part 120 with the work component of the interference of folding with folding platform 100, folding platform 100 still includes folding mechanism 130, one end of platform pedal 110 rotationally connects frame 10, folding mechanism 130 includes pull rod 131 and drive mechanism 132, both ends of pull rod 131 are rotationally connected frame 10 and handrail part 120, one end of drive mechanism 132 connects frame 10, and the other end connects any one of platform pedal 110, handrail part 120 and pull rod 131.

[0048] Folding platform 100 has open state and folding state. In open state, platform pedal 110 is supported on frame 10, platform pedal 110 is flat, and handrail part 120 is perpendicular to platform pedal 110. In folding state, drive mechanism 132 pushes platform pedal 110, handrail part 120 and pull rod 131 to fold up.

[0049] Platform pedal 110 is used for the walking and operation of operating personnel, and platform pedal 110 is horizontal relative to the ground in the open state. In the folding state, in order to reduce the width occupied by platform pedal 110, platform pedal 110 is vertical relative to the ground in the folding state. Therefore, generally, the folding rotation angle of platform pedal 110 is 90°.

[0050] Wherein, hinge 11 is arranged on frame 10, and the two ends of hinge 11 rotatable relative to each other are connected with platform pedal 110 and frame 10 respectively, and platform pedal 110 and frame 10 are rotationally connected through the first rotation shaft 111 of hinge 11. Pull rod seat 12 is further arranged on frame 10, and pull rod 131 is rotationally connected on pull rod seat 12 through the second rotation shaft 135. Handrail part 120 and platform pedal 110 are rotationally connected through the third rotation shaft 123, and handrail part 120 and pull rod 131 are rotationally connected through the fourth rotation shaft 124.

[0051] In the embodiment, the frame 10, the platform step 110, the handrail part 120 and the pull rod 131 constitute a four-bar linkage. The frame 10 constitutes a fixed end of the four-bar linkage, the platform step 110 and the pull rod 131 correspond to a crank of the four-bar linkage, the handrail part 120 corresponds to a swing rod of the four-bar linkage, and the driving mechanism 132 drives any one of the three movable rods to move, and the other two movable rods move accordingly.

[0052] Through the above arrangement, the handrail part 120 can move upward together with the upward overturning and folding of the platform step 110, thereby reducing the inside space of the cotton picker occupied by the handrail part 120 in the folded state, so that the handrail part 120 does not need to be separately disassembled and fixed before and after the folding of the platform step 110, simplifying the folding process of the folding platform 100 of the cotton picker and reducing the time spent on folding the folding platform 100 of the cotton picker.

[0053] In the embodiment, the platform step 110 includes a left platform step and a right platform step, the left platform step is arranged on the left side of the cotton picker, and the right platform step is arranged on the right side of the cotton picker. The folding mechanism 130 is correspondingly provided with two groups, and the two groups of folding mechanisms 130 are respectively used for overturning and folding of the left platform step and the right platform step. The handrail part 120 is correspondingly provided with a left handrail part and a right handrail part, the left handrail part is rotatably connected to one end of the left platform step away from the frame, and the right handrail part is rotatably connected to one end of the right platform step away from the frame. In the open state, the left platform step is flat on the left side of the cotton picker, and the right platform step is flat on the right side of the cotton picker. In the folded state, the two groups of folding mechanisms 130 drive the left platform step and the right platform step to overturn upward and fold.

[0054] In this way, the left and right sides of the cotton picker are both provided with platform steps 110, which is more convenient for the work of the staff.

[0055] In order to avoid the pull rod 131 located above the platform step 110 affecting the walking and work of the staff, in the embodiment, in the open state, the pull rod 131 is located below the platform step 110. In this way, the frame 10, the platform step 110, the handrail part 120 and the pull rod 131 constitute a convex quadrilateral four-bar linkage.

[0056] The cotton picker of the embodiment has the pull rod 131 located below the platform step 110 in the open state, which avoids affecting the walking and work of the staff on the platform step 110 when the folding mechanism 130 is arranged on the platform step 110, and at the same time, the frame 10, the platform step 110, the handrail part 120 and the pull rod 131 do not intersect, thereby improving the stability during the folding process of the folding platform 100.

[0057] In one embodiment, based on the cotton picker of the preceding embodiment, the platform pedal 110 rotates with the frame 10 about a first rotation connection point 1111, the pull rod 131 rotates with the frame 10 about a second rotation connection point 1351, the platform pedal 110 rotates with the handrail part 120 about a third rotation connection point 1231, and the pull rod 131 rotates with the handrail part 120 about a fourth rotation connection point 1241, and the first rotation connection point 1111, the second rotation connection point 1351, the third rotation connection point 1231, and the fourth rotation connection point 1241 form four endpoints of a parallelogram.

[0058] Specifically, the first rotation connection point 1111 is the rotation axis of the first rotation shaft 111, the second rotation connection point 1351 is the rotation axis of the second rotation shaft 135, the third rotation connection point 1231 is the rotation axis of the third rotation shaft 123, and the fourth rotation connection point 1241 is the rotation axis of the fourth rotation shaft 124.

[0059] In this way, the frame 10, the platform pedal 110, the handrail part 120, and the pull rod 131 form a four-bar linkage of a parallelogram, so that during the movement of the four-bar linkage, the handrail part 120 can keep a constant upward movement relative to the frame 10, and at the same time, the platform pedal 110 and the pull rod 131 keep synchronous rotation during folding, and after the platform pedal 110 is folded, the handrail part 120 is located on one side of the platform pedal 110, thereby reducing the width of the cotton picker occupied by the folded platform 100, and avoiding interference between the handrail part 120 and the working parts of the cotton picker.

[0060] In one embodiment, based on the cotton picker of the preceding embodiment, the handrail part 120 includes a handrail body 121 and a connecting plate 122, and the connecting plate 122 is fixed to one end of the handrail body 121 close to the pull rod 131.

[0061] Specifically, one end of the connecting plate 122 is connected to the third rotation connection point 1231 with the handrail body 121, the connecting plate 122, the handrail body 121, and the platform pedal 110 are connected through the third rotation shaft 123, and the connecting plate 122 and the handrail body 121 are further provided with a connecting shaft 125, so that the connecting plate 122 and the handrail body 121 form a whole body rotating around the third rotation shaft 123 through the connection of the third rotation shaft 123 and the connecting shaft 125.

[0062] The end of the connecting plate 122 away from the handrail body 121 extends away from the frame 10 and is rotationally connected with the pull rod 131, and the connecting plate 122 and the pull rod 131 rotate about the fourth rotation connection point 1241.

[0063] In one aspect, if the extension direction of the swing bar in the parallelogram four-bar linkage mechanism composed of the frame 10, the platform deck 110, the armrest 120 and the pull rod 131 changes with the vertical arrangement of the armrest 120, the four-bar linkage mechanism is prone to dead point during movement, which causes the four-bar linkage mechanism to be stuck and unable to move. The dead point is prone to occur when the armrest 120 is in the folding end position, which causes the folding platform 100 to be difficult to escape from the folded state. By moving the fourth connection point outward in the direction away from the frame 10, the dead point position of the four-bar linkage mechanism is moved to the rear end of the folding and overturning movement direction of the four-bar linkage mechanism. Since the folding platform 100 is only folded and overturned by a certain angle (usually 90°), changing the dead point position avoids the occurrence of dead point during the folding and overturning of the folding platform 100.

[0064] On the other hand, if the extension direction of the swing bar in the parallelogram four-bar linkage mechanism composed of the frame 10, the platform deck 110, the armrest 120 and the pull rod 131 changes with the vertical arrangement of the armrest 120, due to the thickness of the frame 10, the platform deck 110, the armrest 120 and the pull rod 131, the terminal of the process of folding and overturning the four-bar linkage mechanism by a certain angle (usually 90°) is unable to complete the folding and overturning due to the interference of the components, and the platform deck 110 cannot be folded to the limit, so that the folding platform 100 protrudes in the width direction of the cotton picker, thereby increasing the width of the cotton picker in the folded state.

[0065] Through the above arrangement, on the one hand, the dead point during the folding and overturning of the folding platform 100 is avoided, thereby ensuring the stability and reliability of the folding and overturning process of the folding platform 100, and on the other hand, the width of the cotton picker in the folded state is reduced, thereby improving the passability of the cotton picker during the transfer process.

[0066] In other embodiments, the armrest 120 can also include an armrest body 121, one end of the armrest body 121 extends away from the frame 10 and is rotationally connected to the pull rod 131 and the fourth rotational connection point 1241.

[0067] In one embodiment, based on the cotton picker of the foregoing embodiment, the platform deck 110 is provided with an avoidance slot 115, one end of the armrest 120 passes through the avoidance slot 115 and is fixed to the lower end of the platform deck 110, and the avoidance slot 115 extends away from the frame 10 to accommodate the armrest 120 in the folded state.

[0068] In the working state, the platform pedal 110 is laid flat. The upper end of the platform pedal 110 is used for walking and working by the operator, and the lower end of the handrail 120 is fixed to the lower end of the platform pedal 110 through the avoidance groove 115. The platform pedal 110 has a rim 114 at the end facing away from the frame 10, which extends downwards from that end. The avoidance groove 115 extends in the direction away from the frame 10, forming an opening 116 through the rim 114, allowing the handrail 120 to rotate within the avoidance groove at a rotating connection point. In the folded state, the upward flipping of the platform pedal 110 causes the rim 114 to move towards and approach the handrail 120, while the handrail 120 rotates within the avoidance groove and approaches the edge of the opening 116.

[0069] This design ensures that the armrest 120 and the platform pedal 110 can rotate relative to each other, improving the reliability of the folding platform 100.

[0070] In one embodiment, in the cotton harvester based on the foregoing embodiment, the platform pedal 110 is provided with a first reinforcing rib 112, and the drive mechanism 132 is connected to the first reinforcing rib 112. Since the platform pedal 110 is relatively large, connecting the drive mechanism 132 to the platform pedal 110 can avoid interference between the drive mechanism 132 and the pull rod 131, thereby saving space.

[0071] Since the connection point between the platform pedal 110 and the drive mechanism 132 is the stress point of the platform pedal 110, by setting the first reinforcing rib 112, the strength of the stress point is increased, thereby avoiding fatigue damage to the stress point after repeated flipping and folding of the platform pedal 110, and improving the service life of the platform pedal 110.

[0072] In one embodiment, the cotton harvester based on the aforementioned embodiment has a second reinforcing rib 113 on the platform pedal 110, and the handrail 120 is rotatably connected to the second reinforcing rib 113.

[0073] Since the connection point between the platform pedal 110 and the handrail 120 is also a stress point, by setting a second reinforcing rib 113, the strength of this stress point is increased, thereby preventing the force on the handrail 120 from acting on the platform pedal 110 and causing fatigue and damage to the stress point, thus improving the service life of the platform pedal 110.

[0074] In one embodiment, based on the cotton picker in the foregoing embodiment, the driving mechanism 132 comprises a fixed seat 134 fixed to the frame 10 and a hydraulic cylinder 133, two ends of the hydraulic cylinder 133 are respectively rotatably connected to the fixed seat 134 and any one of the three of the platform pedal 110, the handrail part 120 and the pull rod 131, the hydraulic cylinder 133 comprises a cylinder body 1331 and a hydraulic rod 1332 which can be extended and retracted relative to the cylinder body 1331, in the open state, the hydraulic rod 1332 is retracted relative to the cylinder body 1331, and in the folded state, the hydraulic rod 1332 is extended relative to the cylinder body 1331.

[0075] When it is needed to fold the folding platform 100, the hydraulic rod 1332 is extended relative to the cylinder body 1331 by injecting liquid into the hydraulic cylinder 133 with pressure, and the hydraulic cylinder 133 pushes the platform pedal 110 to overturn and fold.

[0076] Among them, the hydraulic cylinder 133 can be injected with oil by a liquid pump, and the liquid pump and the hydraulic cylinder 133 are connected by a pipeline. The liquid pump can be a manual pump or an electric pump. A one-way valve is arranged between the liquid pump and the hydraulic cylinder 133, and the one-way valve can be operated to be in an open or closed state. When the one-way valve is closed, the oil in the hydraulic cylinder 133 is prevented from returning to the liquid tank of the liquid pump, and the hydraulic cylinder 133 can support the platform pedal 110 in the folded state. When the one-way valve is opened, the oil in the hydraulic cylinder 133 is pressed back into the liquid tank of the liquid pump under the gravity of the platform pedal 110 and the handrail part 120, and the folding platform 100 gradually returns to the open state.

[0077] It can be understood that the hydraulic cylinder 133 can also be a double-acting cylinder, and the oil pump injects oil into different oil injection ports of the hydraulic cylinder 133 to respectively realize the contraction or extension of the hydraulic cylinder 133.

[0078] It can be understood that the hydraulic cylinder 133 usually uses oil as the medium for transmitting pressure, but the hydraulic cylinder 133 can also use other liquids, such as water-based liquid, emulsion, synthetic liquid, etc.

[0079] By arranging the hydraulic cylinder 133, the automatic folding and opening of the folding platform 100 can be realized, the operation convenience of the folding platform 100 is improved, and the speed and convenience during the scene change of the cotton picker are improved.

[0080] In one embodiment, based on the cotton picker in the foregoing embodiment, in the open state, the hydraulic cylinder 133 is arranged below the platform pedal 110, and the hydraulic cylinder 133 is arranged upwardly from one end close to the fixed seat 134 to the other end.

[0081] The hydraulic cylinder 133 is arranged below the platform pedal 110, which avoids affecting the walking and operation of the staff on the platform pedal 110 when the hydraulic cylinder 133 is arranged on the platform pedal 110, and meanwhile, the hydraulic cylinder 133 is arranged upwardly from one end close to the fixed seat 134 to the other end, so that the movement of the hydraulic cylinder 133 can generate an upward component force, thereby the hydraulic cylinder 133 can push any one of the platform pedal 110, the handrail part 120 and the pull rod 131 to move upwardly to change from the working state to the folding state, and the folding of the folding platform 100 is realized.

[0082] In some other embodiments, the driving mechanism 132 can also adopt a gas spring, a damper or the like, the staff manually turns over the platform pedal 110 to realize the folding and opening of the folding mechanism 130, and the gas spring and the damper can play the roles of assisting force and supporting hovering.

[0083] In some other embodiments, the driving mechanism 132 can also adopt a motor and a transmission mechanism, and the folding and opening of the folding mechanism 130 are realized through the cooperation of the motor and the transmission mechanism.

[0084] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, and those skilled in the art should understand that the present application includes but is not limited to the contents described in the above specific embodiments and the drawings. Any modification which does not deviate from the function and structural principle of the present application shall be included in the scope of the claims.

Claims

1. A cotton harvester comprising a frame and a folding platform rotatably mounted to the frame, characterized in that, The folding platform comprises: a platform deck rotatably connected to the frame; an armrest rotatably connected to an end of the platform deck away from the frame; and a folding mechanism comprising a pull rod and a driving mechanism, two ends of the pull rod are rotatably connected to the frame and the armrest respectively, one end of the driving mechanism is connected to the frame, and the other end is connected to any one of the platform deck, the armrest and the pull rod, The folding platform has an open state and a folded state, in the open state, the platform deck is flat, and the armrest is perpendicular to the platform deck, in the folded state, the driving mechanism pushes the platform deck, the armrest and the pull rod to be folded by being turned up.

2. A cotton harvester as claimed in claim 1 wherein, The driving mechanism comprises a hydraulic cylinder, the frame is provided with a fixed seat, two ends of the hydraulic cylinder are rotatably connected to the fixed seat and any one of the platform deck, the armrest and the pull rod, the hydraulic cylinder comprises a cylinder body and a hydraulic rod which can be extended and retracted relative to the cylinder body, in the open state, the hydraulic rod is retracted relative to the cylinder body, and in the folded state, the hydraulic rod is extended relative to the cylinder body.

3. A cotton harvester as claimed in claim 2 wherein, In the open state, the hydraulic cylinder is arranged below the platform deck, and the hydraulic cylinder is arranged upwardly from one end close to the fixed seat to the other end.

4. A cotton harvester as claimed in claim 1 wherein, The platform deck is provided with a first reinforcing rib, and the driving mechanism is connected to the first reinforcing rib.

5. A cotton harvester as claimed in claim 1 wherein, In the open state, the pull rod is located below the platform deck.

6. A cotton harvester as claimed in claim 5 wherein, The platform deck and the frame rotate around a first rotation connection point, the pull rod and the frame rotate around a second rotation connection point, the platform deck and the armrest rotate around a third rotation connection point, the pull rod and the armrest rotate around a fourth rotation connection point, and the first rotation connection point, the second rotation connection point, the third rotation connection point and the fourth rotation connection point constitute four endpoints of a parallelogram.

7. A cotton harvester as claimed in claim 6 wherein, The armrest comprises an armrest body and a connecting plate, the connecting plate is fixed to one end of the armrest body close to the pull rod, an end of the connecting plate away from the armrest body extends away from the frame and is rotatably connected to the pull rod, and the connecting plate and the pull rod rotate around the fourth rotation connection point, Or, The armrest comprises an armrest body and a connecting plate, the connecting plate is fixed to one end of the armrest body close to the pull rod, an end of the connecting plate away from the armrest body extends away from the frame and is rotatably connected to the pull rod, and the connecting plate and the pull rod rotate around the fourth rotation connection point.

8. A cotton harvester as claimed in claim 1 wherein, The platform deck is provided with a clearance groove, the lower end of the armrest passes through the clearance groove and is fixed to the lower end of the platform deck, and the clearance groove extends away from the frame to accommodate the armrest in the folded state.

9. A cotton harvester as claimed in claim 1 wherein, The platform deck is provided with a second reinforcing rib, and the armrest is rotatably connected to the second reinforcing rib.

10. A cotton harvester as claimed in any one of claims 1 to 9 wherein, The platform steps include a left platform step and a right platform step, the left platform step is arranged on the left side of the cotton picker, the right platform step is arranged on the right side of the cotton picker, and two groups of folding mechanisms are correspondingly arranged, in the unfolded state, the left platform step is unfolded on the left side of the cotton picker, and the right platform step is unfolded on the right side of the cotton picker, and in the folded state, the two groups of folding mechanisms drive the left platform step and the right platform step to be folded by being turned upward respectively.

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