A Rotatable Escalator for Cotton Picker and the Cotton Picker

Abstract

The present invention relates to a rotatable ladder for a cotton picker, which includes an upper ladder and a lower ladder. A connecting rod assembly is provided between the upper ladder and the lower ladder, and an oil cylinder is connected to the connecting rod assembly. The connecting rod assembly drives the lower ladder to rotate upward and downward by the extension and contraction of the oil cylinder. The advantages of the present invention are as follows: The connection between the upper ladder and the lower ladder is realized through the connecting rod assembly. Since an oil cylinder is connected to the connecting rod assembly, the lower ladder is driven to rotate upward and downward by the extension and contraction of the oil cylinder, thereby realizing the automatic rotary lifting function of the lower ladder without manual operation by the operator. This not only reduces the operation steps of the user but also improves the safety performance during operation. Moreover, the oil cylinder can well control the rotation force of the lower ladder, and the lower ladder can be stopped at any time during rotation by general external force to ensure the safety of personnel during use. In addition, the present invention also provides a cotton picker, which includes the above-mentioned rotatable ladder for a cotton picker.

Description

Technical Field

[0001] The present invention relates to a rotatable ladder for a cotton picker and a cotton picker. Background Art

[0002] With the advancement of agricultural mechanization in China, the agricultural industry has higher and higher requirements for agricultural machinery. Each agricultural machinery manufacturer has continuously improved the quality of its products. Compared with the past, the performance of agricultural machinery has also been greatly improved. Driven by this general trend, the mechanization of cotton planting in China has also developed unprecedentedly. Therefore, the cotton picker industry has developed rapidly in recent years, and products have been continuously updated. During the operation of existing cotton pickers, when getting on and off the vehicle, the lower part of the ladder needs to be folded back to avoid the lower part of the ladder touching the cotton, resulting in cotton shedding or the lint being stretched, affecting the cotton picking effect. Most of the existing ladders for cotton pickers are of the type with a thin and manually rotatable structure. They need to be fixed on the lower ladder with a pulling rope or a similar traction object, and pulling the traction object achieves the effect of folding the lower ladder, but manual pulling is laborious and dangerous. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem of laboriousness and danger in the manual pulling process of the existing ladder, and propose a rotatable ladder for a cotton picker, which realizes the automatic rotation of the lower ladder through an oil cylinder, reducing the operation steps of the user.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: A rotatable ladder for a cotton picker includes an upper ladder and a lower ladder rotatably connected to the upper ladder. A connecting rod assembly is provided between the upper ladder and the lower ladder. An oil cylinder is connected to the connecting rod assembly. The connecting rod assembly drives the lower ladder to rotate upward and downward depending on the extension and contraction of the oil cylinder. A switch connected to the oil cylinder is provided on the upper ladder or / and the lower ladder. The upper ladder and the oil cylinder are both fixedly connected to the frame of the cotton picker.

[0005] Preferably, the connecting rod mechanism includes a front connecting rod mechanism and a rear connecting rod mechanism. Both the front connecting rod mechanism and the rear connecting rod mechanism include an upper connecting rod and a lower connecting rod. The middle of the upper connecting rod is rotatably connected to the upper ladder. One end of the lower connecting rod is rotatably connected to the upper connecting rod, and the other end of the lower connecting rod is arranged on the lower ladder. A connecting pin connected to the oil cylinder is provided between the upper connecting rods.

[0006] Preferably, a bearing snap ring is provided on the connecting pin, and the bearing snap ring is arranged on both the left and right sides of the oil cylinder.

[0007] Preferably, a lock plate connected to the upper connecting rod is provided on the connecting pin.

[0008] Preferably, one end of the lower connecting rod is rotatably connected to the upper connecting rod through a rotating shaft.

[0009] Preferably, a limiting plate is provided on the lower ladder.

[0010] Preferably, the lower escalator is rotatably connected to the upper escalator through a rotating pin, and a fixing plate connected to the lower escalator is provided on the rotating pin.

[0011] Preferably, an escalator guardrail is provided on the upper escalator.

[0012] In addition, the present invention also provides a cotton picker, including a frame and an escalator provided on the frame, and the escalator adopts the rotatable escalator for a cotton picker described above.

[0013] In summary, the advantages of the present invention are as follows: the connection between the upper escalator and the lower escalator is realized through the link assembly. Since an oil cylinder is connected to the link assembly, the lower escalator is driven to rotate upward and downward by the extension and contraction of the oil cylinder, thereby realizing the automatic rotation and lifting function of the lower escalator. There is no need for manual operation by the operator, which not only reduces the operation steps of the user but also improves the safety performance during operation. Moreover, the oil cylinder can well control the rotation force of the lower escalator, and the lower escalator can be stopped at any time during the rotation process by a general external force, ensuring the safety of personnel during use. Finally, both the upper escalator and the oil cylinder are fixedly connected to the frame of the cotton picker. Therefore, during the rotation of the lower escalator, the upper escalator does not rotate relatively, improving the rotation quality. The setting of the switch can reduce the complexity of the operator's operation and improve the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 is a schematic structural diagram of a rotatable escalator for a cotton picker according to the present invention;

[0016] Figure 2 is Figure 1 an exploded view of

[0017] Figure 3 is a schematic structural diagram when the lower escalator rotates according to the present invention;

[0018] Figure 4 is a schematic structural diagram after the lower escalator rotates according to the present invention.

[0019] Reference numerals:

[0020] 1 upper escalator, 2 lower escalator, 3 link assembly, 31 front link mechanism, 32 rear link mechanism, 33 upper link, 34 lower link, 35 connecting pin, 36 bearing snap ring, 37 locking plate, 38 rotating shaft, 4 oil cylinder, 5 limiting plate, 6 rotating pin, 61 fixing plate, 7 escalator guardrail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Embodiment 1

[0022] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a rotatable ladder for a cotton picker includes an upper ladder 1 and a lower ladder 2 rotatably connected to the upper ladder 1. A connecting rod assembly 3 is provided between the upper ladder 1 and the lower ladder 2. An oil cylinder 4 is connected to the connecting rod assembly 3. The connecting rod assembly 3 drives the lower ladder 2 to rotate upward and downward by the extension and contraction of the oil cylinder. A switch connected to the oil cylinder is provided on the upper ladder 1 or / and the lower ladder 2. In this embodiment, the switch is preferably provided on the upper ladder 1, and two switches are provided, which will not cause spatial interference to the rotation of the lower ladder, greatly improving the convenience of switch operation. The upper ladder 1 and the oil cylinder are both fixedly connected to the frame of the cotton picker.

[0023] The connection between the upper ladder 1 and the lower ladder 2 is realized through the connecting rod assembly 3. Since the oil cylinder is connected to the connecting rod assembly 3, the lower ladder 2 is driven to rotate upward and downward by the extension and contraction of the oil cylinder, thereby realizing the automatic rotation and lifting function of the lower ladder 2 without manual operation by the operator. This not only reduces the operation steps of the user but also improves the safety performance during operation. Moreover, the oil cylinder can well control the rotation force of the lower ladder 2, and the lower ladder 2 can be stopped at any time during the rotation process by general external force, ensuring the safety of personnel during use. Finally, the upper ladder 1 and the oil cylinder are both fixedly connected to the frame of the cotton picker. Therefore, during the rotation of the lower ladder 2, the upper ladder 1 does not rotate relatively, improving the rotation quality. The setting of the switch can reduce the complexity of the operator's operation and improve the convenience of operation.

[0024] The connecting rod mechanism includes a front connecting rod mechanism 31 and a rear connecting rod mechanism 32. Both the front connecting rod mechanism 31 and the rear connecting rod mechanism 32 include an upper connecting rod 33 and a lower connecting rod 34. The middle of the upper connecting rod 33 is rotatably connected to the upper ladder 1. One end of the lower connecting rod 34 is rotatably connected to the upper connecting rod 33, and the other end of the lower connecting rod 34 is arranged on the lower ladder 2. A connecting pin 35 connected to the oil cylinder is provided between the upper connecting rods 33. Setting the connecting rod mechanism as the front connecting rod mechanism 31 and the rear connecting rod mechanism 32 can ensure the stability of the rotation of the lower ladder 2. Secondly, through the front connecting rod mechanism 31 and the rear connecting rod mechanism 32 formed by the upper connecting rod 33 and the lower connecting rod 34, the installation structure of the entire connecting rod mechanism can be simplified, the symmetry of the entire connecting mechanism can be ensured, and the stability of the rotation of the connecting rod mechanism can be realized. The setting of the connecting pin 35 can not only realize the connection between the front connecting rod mechanism 31 and the rear connecting rod mechanism 32 and the synchronous movement of the front connecting rod mechanism 31 and the rear connecting rod mechanism 32, but also facilitate the connection of the oil cylinder, ensuring that the acting force formed by the oil cylinder acts evenly on the connecting rod mechanism.

[0025] A bearing snap ring 36 is provided on the connecting pin 35. The bearing snap rings 36 are arranged on the left and right sides of the oil cylinder, which can improve the fixing quality between the oil cylinder and the connecting pin 35, prevent relative movement between the oil cylinder and the connecting pin 35 during the operation of the oil cylinder, thereby ensuring the synchronous rotation of the front link mechanism 31 and the rear link mechanism 32, and enabling the link assembly 3 to rotate smoothly. A lock plate 37 connected to the upper link is provided on the connecting pin 35, which can ensure the fixing quality of the connecting pin and prevent relative rotation between the connecting pin and the upper link during rotation. In this embodiment, the lock plate is fixed to the upper link by screws. One end of the lower link 34 is rotatably connected to the upper link 33 through a rotating shaft 38, which can ensure flexible rotation between the lower link 34 and the upper link 33, and the overall installation and disassembly are convenient. A limiting plate 5 is provided on the lower escalator 2, which can effectively limit the rotation angle of the lower escalator 2 and ensure the fixing quality when the lower escalator 2 is pressed down or lifted.

[0026] The lower escalator 2 is rotatably connected to the upper escalator 1 through a rotating pin 6. A fixing plate 61 connected to the lower escalator 2 is provided on the rotating pin. In this embodiment, the fixing plate and the lower escalator are also connected by screws. The rotating pin can ensure flexible rotation between the lower escalator 2 and the upper escalator 1. The setting of the fixing plate can ensure that the rotating pin does not move during rotation, improving the rotation quality of the lower escalator 2 and the upper escalator 1. An escalator guardrail 7 is provided on the upper escalator 1, which can not only effectively protect the upper escalator 1 and improve the safety performance. In this embodiment, there are two escalator guardrails, which are respectively located on both sides of the upper escalator 1. Moreover, when the operator gets on and off the lower escalator 2, it can act as a handrail, improving the safety performance of the operator when getting on and off the lower escalator 2.

[0027] Embodiment 2

[0028] This embodiment also provides a cotton picker, including a frame and an escalator provided on the frame. The escalator adopts the rotatable escalator for cotton picker described in Embodiment 1.

[0029] In addition to the above preferred embodiments, the present invention has other implementation manners. Those skilled in the art can make various changes and deformations according to the present invention. As long as they do not depart from the spirit of the present invention, they shall fall within the scope defined by the appended claims of the present invention.

Claims

1. A rotatable ladder for a cotton picker, characterized in that: It includes an upper escalator and a lower escalator rotatably connected to the upper escalator. A connecting rod assembly is provided between the upper escalator and the lower escalator. An oil cylinder is connected to the connecting rod assembly. The connecting rod assembly drives the lower escalator to rotate upward and downward by the extension and contraction of the oil cylinder. A switch connected to the oil cylinder is provided on the upper escalator or / and the lower escalator. The upper escalator and the oil cylinder are both fixedly connected to the frame of the cotton picker; the connecting rod assembly includes a front connecting rod mechanism and a rear connecting rod mechanism. Both the front connecting rod mechanism and the rear connecting rod mechanism include an upper connecting rod and a lower connecting rod. The middle of the upper connecting rod is rotatably connected to the upper escalator. One end of the lower connecting rod is rotatably connected to the upper connecting rod. The other end of the lower connecting rod is arranged on the lower escalator. A connecting pin connected to the oil cylinder is provided between the upper connecting rods; a handrail guard is provided on the upper escalator.

2. The rotatable ladder for a cotton picker according to claim 1, characterized in that: A bearing snap ring is provided on the connecting pin, and the bearing snap ring is arranged on both the left and right sides of the oil cylinder.

3. The rotatable ladder for a cotton picker according to claim 1, characterized in that: A lock plate connected to the upper connecting rod is provided on the connecting pin.

4. The rotatable ladder for a cotton picker according to claim 1, characterized in that: One end of the lower connecting rod is rotatably connected to the upper connecting rod through a rotating shaft.

5. The rotatable ladder for a cotton picker according to claim 1, characterized in that: A limiting plate is provided on the lower escalator.

6. The rotatable ladder for a cotton picker according to claim 1, characterized in that: The lower escalator is rotatably connected to the upper escalator through a rotating pin, and a fixing plate connected to the lower escalator is provided on the rotating pin.

7. A cotton picker, comprising a frame and a ladder provided on the frame, characterized in that: The escalator adopts the rotatable escalator for cotton picker described in any one of claims 1-6.

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