A buffer device for a potato harvester

Abstract

The utility model relates to a kind of buffer device for potato harvester, it is integrally installed between the lower side of rear discharge end of potato conveying device and the upper side of ton bag storage device;It is constituted by buffer frame, buffer flexible pocket and pocket bottom opening and closing control mechanism;Buffer frame upper end frame is fixedly connected with the rear extension of the frame body of potato conveying device;Buffer flexible pocket is placed in buffer frame, its upper end is wrapped and fixed with the upper end frame of buffer frame, and its lower end extends from the lower end of buffer frame;Pocket bottom opening and closing control mechanism includes two locking rollers and two groups of locking roller opening and closing drive mechanism;Space is formed between two locking rollers for the lower end of buffer flexible pocket to pass through;One group of locking roller opening and closing drive mechanism is connected between the left end of two locking rollers and the two outer extension shafts outside the left side of buffer frame, and the other group of locking roller opening and closing drive mechanism is connected between the right end of two locking rollers and the two outer extension shafts outside the right side of buffer frame.The device improves harvesting efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of potato harvesters, specifically relating to a buffer device for potato harvesters. Background Technology

[0002] The self-propelled potato harvester is used to pick up crops from deep soil and the soil surface, transport them backward, and perform preliminary separation and screening of the harvested crops from seedlings and residual soil during the backward transport process. Seedlings and residual soil are separated and screened out, and weeds, crop stalks and broken leaves mixed in with the crops are sucked away and discharged by a suction-type impurity removal device. When the crops enter the sorting table, large impurities such as soil clods that have not been removed are sorted out manually, and the harvested crops are transported to ton bags placed on a ton bag storage device by a potato conveying device. The ton bag storage device generally adopts a self-unloading device to support the collection and automatic unloading of crops.

[0003] Currently, potatoes are directly fed into ton bags after screening. However, existing ton bag systems require stopping to unload the bags once they are full, resulting in wasted harvesting time and costs, and hindering continuous harvesting operations, leading to low harvesting efficiency. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by proposing a buffer device for potato harvesters that enables normal unloading of ton bags without stopping the machine, thereby improving harvesting efficiency. The above-mentioned objective of this utility model is achieved through the following technical solution: A buffer device for a potato harvester is installed between the lower end of the rear discharge end of the potato conveying device and the upper part of the ton bag storage device. The buffer device consists of a buffer frame, a flexible buffer bag, and a bottom opening and closing control mechanism. The upper frame of the buffer frame is fixedly connected to the rear extension of the frame of the potato conveying device. Two outward shafts are vertically welded to the left and right sides of the lower end of the buffer frame along the front and rear directions. The flexible buffer bag is a cylindrical cloth bag; the flexible buffer bag is placed inside the buffer frame, and the upper end of the flexible buffer bag is wrapped and fixed to the upper edge of the buffer frame to form the inlet end of the flexible buffer bag; the lower end of the flexible buffer bag extends from the lower end of the buffer frame. The bottom opening and closing control mechanism includes two locking rollers and two sets of locking roller opening and closing drive mechanisms; the two locking rollers are arranged parallel to each other below the buffer frame, and a space is formed between the two locking rollers for the lower end of the buffer flexible pocket to pass through; the two sets of locking roller opening and closing drive mechanisms are respectively arranged on the left and right sides of the buffer frame, one set of locking roller opening and closing drive mechanisms is connected between the left end of the two locking rollers and the two extended shafts on the left side of the buffer frame, and the other set of locking roller opening and closing drive mechanisms is connected between the right end of the two locking rollers and the two extended shafts on the right side of the buffer frame.

[0005] Moreover, the buffer frame is welded from square tubes and adopts a trapezoidal frame that is wider at the top and narrower at the bottom. The width of the upper end of the buffer frame is greater than the width of the rear discharge end of the potato conveying device, and the width of the lower end of the buffer frame is smaller than the opening width of the ton bag below.

[0006] Moreover, the upper part of the buffer frame adopts a stepped structure that is lower at the front and higher at the rear.

[0007] Moreover, both locking rollers consist of a rigid roller core and a sponge sleeve that is wrapped around and fixed to the outside of the rigid roller core.

[0008] Moreover, both sets of drive mechanisms consist of two rocker arms and an opening / closing drive cylinder; the upper ends of the two rocker arms are rotatably connected to two corresponding extended shafts on the opposite side, and the lower ends of the two rocker arms are rotatably connected to the corresponding ends of the two locking rollers. The middle part of one rocker arm is connected to the cylinder end of the opening / closing drive cylinder by a first pin hinge, and the middle part of the other rocker arm is connected to the cylinder rod end of the opening / closing drive cylinder by a second pin hinge.

[0009] The advantages and positive effects of this utility model are as follows: This invention adds a buffer device above the ton bag device. After the ton bag is full, the lower port of the buffer flexible bag is closed, and the potatoes are temporarily stored in the buffer flexible bag. This allows for normal unloading of the ton bag without stopping the machine. After the ton bag is reinstalled, the lower port of the buffer flexible bag is opened again, and the potatoes fall into the ton bag, realizing efficient potato harvesting without stopping the machine. Attached Figure Description

[0010] Figure 1 This is a schematic diagram showing the installation position of the buffer device of this utility model on a potato harvester; Figure 2 This is a schematic diagram of the structure of the cache device of this utility model; Figure 3 This is a schematic diagram of the structure of the buffer box frame of this utility model; Figure 4 This is a schematic diagram of the structure of the rocker arm of this utility model; Figure 5 This is a schematic diagram of the structure of the locking roller of this utility model. Detailed Implementation

[0011] The structure of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0012] Please see the following: A buffer device for a potato harvester. Figures 1-5 The invention features a buffer device 2 installed between the rear discharge end of the potato conveying device 1 and the top of the ton bag storage device 3. It mainly consists of a buffer frame 2.3, a flexible buffer bag 2.1, and a bottom opening / closing control mechanism. The buffer frame is welded from square tubing and adopts a trapezoidal shape, wider at the top and narrower at the bottom. The width of the upper end of the buffer frame is slightly larger than the width of the rear discharge end of the potato conveying device, while the width of the lower end is slightly smaller than the opening width of the ton bag below. The upper end of the buffer frame adopts a stepped structure, lower at the front and higher at the rear. The lower front part 2.3.2 is located below the rear of the drive chain of the potato conveying device, while the higher rear part 2.3.1 is located behind the drive chain. This facilitates a reasonable spatial arrangement of the buffer frame and the rear end of the potato conveying device, allowing potatoes to fall smoothly into the flexible buffer bag without falling outwards. The upper frame of the buffer frame is fixedly connected to the rear extension of the potato conveying device frame with bolts. Two outward-extending shafts 2.3.3 are vertically welded to the left and right sides of the lower end of the buffer frame along the front-back direction, respectively, for installing a set of bottom-covering opening and closing control mechanisms.

[0013] The flexible buffer pocket is made of high-strength tubular fabric, such as knife-coated fabric. The flexible buffer pocket is placed inside the buffer frame, with its upper end wrapped and fixed to the upper edge of the buffer frame, forming the inlet end of the flexible buffer pocket. The lower end of the flexible buffer pocket extends from the lower end of the buffer frame.

[0014] The bottom-closing control mechanism includes two locking rollers 2.2 and two sets of locking roller opening and closing drive mechanisms. Each locking roller consists of a rigid roller core 2.2.1 and a sponge sleeve 2.2.2 that wraps around and is fixed to the rigid roller core. The sponge sleeve can be fixed to the rigid roller core with cable ties. The tightening roller adopts a composite structure of inner rigidity and outer flexibility. On the one hand, the elastic deformation of the sponge sleeve increases the clamping force on the lower end of the buffer flexible pocket; on the other hand, it avoids rigid collisions with falling potatoes, thus significantly reducing bump damage to the potatoes. The two locking rollers are arranged parallel to each other below the buffer frame, forming a space between them for the lower end of the buffer flexible pocket to pass through. Two sets of locking roller opening and closing drive mechanisms are located on the left and right sides of the buffer frame. One set of locking roller opening and closing drive mechanisms connects the left ends of the two locking rollers to two outward-extending shafts on the left side of the buffer frame, and the other set connects the right ends of the two locking rollers to two outward-extending shafts on the right side of the buffer frame. Under the action of two sets of locking roller opening and closing drive mechanisms, when the two locking rollers move towards each other to a close position, they can clamp and fix the lower end of the buffer flexible bag. In this state, potatoes output from the rear discharge end of the potato conveying device fall into the buffer flexible bag for temporary storage. At this time, the ton bags filled with potatoes below can be unloaded without stopping the machine, and empty ton bags can be placed on the ton bag storage device. When the two locking rollers move away from each other, the lower end of the buffer flexible bag opens, allowing the potatoes temporarily stored in the buffer flexible bag to fall into the ton bags below, thus achieving uninterrupted potato harvesting.

[0015] Both sets of drive mechanisms consist of two rocker arms 2.4 and an opening / closing drive cylinder 2.5. Connecting holes are provided at both ends and the middle of the rocker arms. The upper ends of the two rocker arms are rotatably connected to two corresponding extended shafts on their respective sides, and the lower ends of the two rocker arms are rotatably connected to the corresponding ends of two locking rollers. The middle of one rocker arm is hinged to the cylinder end of the opening / closing drive cylinder via a first pin, and the middle of the other rocker arm is hinged to the cylinder rod end of the opening / closing drive cylinder via a second pin. When the cylinder rod of the opening / closing drive cylinder extends, it can buffer and flexibly collect the material; when the cylinder rod retracts, it can buffer and flexibly store the material temporarily.

[0016] This buffer device, originally designed for potato harvesters, enables unloading of ton bags without stopping the machine after they are full, while still meeting the existing requirement of unloading after the existing ton bags are full, thus reducing unloading time and costs.

[0017] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A buffer device for a potato harvester, characterized in that: The entire unit is installed between the lower end of the potato conveying device and the upper part of the ton bag storage device; the buffer device consists of a buffer frame, a buffer flexible bag, and a bottom opening and closing control mechanism; the upper frame of the buffer frame is fixedly connected to the rear extension of the potato conveying device frame; two outward shafts are vertically welded to the left and right sides of the lower end of the buffer frame along the front and rear directions. The flexible buffer bag is a cylindrical cloth bag; the flexible buffer bag is placed inside the buffer frame, and the upper end of the flexible buffer bag is wrapped and fixed to the upper edge of the buffer frame to form the inlet end of the flexible buffer bag; the lower end of the flexible buffer bag extends from the lower end of the buffer frame. The bottom opening and closing control mechanism includes two locking rollers and two sets of locking roller opening and closing drive mechanisms; the two locking rollers are arranged parallel to each other below the buffer frame, and a space is formed between the two locking rollers for the lower end of the buffer flexible pocket to pass through; the two sets of locking roller opening and closing drive mechanisms are respectively arranged on the left and right sides of the buffer frame, one set of locking roller opening and closing drive mechanisms is connected between the left end of the two locking rollers and the two extended shafts on the left side of the buffer frame, and the other set of locking roller opening and closing drive mechanisms is connected between the right end of the two locking rollers and the two extended shafts on the right side of the buffer frame.

2. The buffer device for a potato harvester according to claim 1, characterized in that: The buffer frame is welded from square tubes and adopts a trapezoidal frame that is wider at the top and narrower at the bottom. The width of the upper end of the buffer frame is greater than the width of the rear discharge end of the potato conveying device, and the width of the lower end of the buffer frame is less than the opening width of the ton bag below.

3. The buffer device for a potato harvester according to claim 1, characterized in that: The upper part of the buffer frame adopts a stepped structure that is lower at the front and higher at the rear.

4. The buffer device for a potato harvester according to claim 1, characterized in that: Both locking rollers consist of a rigid roller core and a sponge sleeve that is wrapped around and fixed to the outside of the rigid roller core.

5. The buffer device for a potato harvester according to claim 1, characterized in that: Both sets of drive mechanisms consist of two rocker arms and an opening / closing drive cylinder; the upper ends of the two rocker arms are rotatably connected to two corresponding extended shafts on the same side, and the lower ends of the two rocker arms are rotatably connected to the corresponding ends of the two locking rollers. The middle part of one rocker arm is connected to the cylinder end of the opening / closing drive cylinder by a first pin hinge, and the middle part of the other rocker arm is connected to the cylinder rod end of the opening / closing drive cylinder by a second pin hinge.

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