A buffer mechanism for plowing machinery

Abstract

The invention discloses a plowing machinery buffer mechanism, comprising an upper connecting rod, two upper supporting wheels, a lower connecting rod, two lower supporting wheels, an elastic element and a roller structure, wherein the upper connecting rod head end is hinged with a frame; the upper connecting rod is fixedly connected with an upper plow body; the two upper supporting wheels are rotatably mounted at the bottom of the upper connecting rod; the lower connecting rod head end is hinged with the frame; the lower connecting rod tail section and the upper connecting rod tail section are cross-distributed; the lower connecting rod is fixedly connected with the lower plow body; the two lower supporting wheels are rotatably mounted on the top of the lower connecting rod; the elastic element is mounted between the upper connecting rod tail end and the lower connecting rod tail end; the roller structure is mounted between the two upper supporting wheels and the two lower supporting wheels, and is in line contact with the upper supporting wheel and the lower supporting wheel respectively. The invention enables the plowing machinery to trigger an obstacle avoidance mechanism when encountering obstacles such as stones, and to return to the plowing working state after successfully crossing the obstacles, thereby avoiding missed plowing and also improving the stability of the plowing depth.

Description

Technical Field

[0001] The present invention relates to the technical field of plowing machine obstacle avoidance, and more particularly to a plowing machine buffer mechanism. Background Art

[0002] Some farmlands in my country are close to river valleys, mountains, grasslands and Gobi deserts, which results in the presence of a large amount of hard objects such as stones and tree roots in the cultivated soil. When a reversible plow is used to plow the land in soil containing hard objects such as stones and tree roots, the hard objects will produce a greater instantaneous impact load than the soil, causing deformation and breakage of key working parts such as the plow body and plow column, reducing the operating reliability of the entire machine and shortening the service life of the plow.

[0003] Therefore, providing a buffer mechanism for plowing machinery is an issue that needs to be urgently addressed by those skilled in the art. Summary of the invention

[0004] In view of this, the present invention provides a plowing machinery buffer mechanism, so that when the plowing machinery encounters obstacles such as stones, it can trigger the obstacle avoidance mechanism, and return to the plowing working state after successfully crossing the obstacle, thereby avoiding missed plowing and improving the stability of plowing depth.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A plowing machine buffer mechanism, comprising:

[0007] An upper connecting rod, the head end of which is hinged to the frame; the upper connecting rod is fixedly connected to the upper plow body;

[0008] Two upper support wheels, the two upper support wheels are rotatably mounted on the bottom of the upper connecting rod;

[0009] A lower connecting rod, wherein the head end of the lower connecting rod is hinged to the frame; the tail section of the lower connecting rod and the tail section of the upper connecting rod are cross-distributed; the lower connecting rod is fixedly connected to the lower plow body;

[0010] Two lower support wheels, the two lower support wheels are rotatably mounted on the top of the lower connecting rod;

[0011] An elastic element, the elastic element being installed between the tail end of the upper connecting rod and the tail end of the lower connecting rod;

[0012] A roller structure is installed between the two upper support wheels and the two lower support wheels, and is in line contact with the upper support wheels and the lower support wheels respectively.

[0013] By adopting the above technical solution, the beneficial effects of the present invention are:

[0014] When encountering an obstacle, under the action of the roller structure, the upper support wheel and the lower support wheel, the upper connecting rod, the upper plow body, the lower connecting rod and the lower plow body can rotate clockwise or counterclockwise. At the same time, under the elastic action of the elastic element, the obstacle can be smoothly crossed and the plowing working state can be restored, thereby avoiding missed plowing and improving the stability of the plowing depth.

[0015] Furthermore, the elastic element is a compression spring or a leaf spring.

[0016] Furthermore, the roller structure includes a roller and two baffles, and the roller has symmetrically distributed countersunk holes on both sides; a cylindrical protrusion is provided at the center position of the two baffles, and the two protrusions are respectively embedded in the two countersunk holes; the two sides of the baffle are arc-shaped, and are respectively located between the upper support wheel and the lower support wheel corresponding to the upper and lower parts; the outer circle of the roller is in linear contact with the upper support wheel and the lower support wheel respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 The accompanying drawing is a structural schematic diagram of a plowing machine buffer mechanism in a normal tillage state in Example 1 provided by the present invention;

[0019] Figure 2 The accompanying drawing is a schematic structural diagram of a plowing machine buffer mechanism in an obstacle avoidance state in Example 1 provided by the present invention;

[0020] Figure 3 The accompanying drawing is a structural schematic diagram of a plowing machine buffer mechanism in a normal tillage state in Example 2 provided by the present invention;

[0021] Figure 4 The accompanying drawing is a schematic structural diagram of the roller structure provided by the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1:

[0024] like Figure 1 , 2 As shown in Figure 4, an embodiment of the present invention discloses a plowing machinery buffer mechanism, including an upper connecting rod 1, two upper supporting wheels 2, a lower connecting rod 3, two lower supporting wheels 4, an elastic element 5 and a roller structure 6, wherein the head end of the upper connecting rod 1 is hinged to the frame 7; the upper connecting rod 1 is fixedly connected to the upper plow body 8; the two upper supporting wheels 2 are rotatably mounted on the bottom of the upper connecting rod 1; the head end of the lower connecting rod 3 is hinged to the frame 7; the tail section of the lower connecting rod 3 and the tail section of the upper connecting rod 1 are cross-distributed; the lower connecting rod 3 is fixedly connected to the lower plow body 9; the two lower supporting wheels 4 are rotatably mounted on the top of the lower connecting rod 3; the elastic element 5 is mounted between the tail end of the upper connecting rod 1 and the tail end of the lower connecting rod 3; in this embodiment, the elastic element 5 is a compression spring; the roller structure 6 is mounted between the two upper supporting wheels 2 and the two lower supporting wheels 4, and is in line contact with the upper supporting wheels 2 and the lower supporting wheels 4 respectively. When encountering an obstacle, the present invention, under the action of the roller structure 6, the upper support wheel 2 and the lower support wheel 4, realizes the clockwise or counterclockwise rotation of the upper connecting rod 1, the upper plow body 8, the lower connecting rod 3 and the lower plow body 9. At the same time, under the elastic action of the compression spring, it can smoothly cross the obstacle and return to the plowing working state, thereby avoiding missed plowing and improving the stability of the plowing depth.

[0025] In this embodiment, the upper support wheel 2 is connected to the upper connecting rod 1 through a connecting rod, wherein one end of the connecting rod is fixedly connected to the upper connecting rod 1, and the center of the upper support wheel 2 is installed on the other end of the connecting rod through a pin, so that the upper support wheel 2 rotates around the center of the circle to form a rotating pair. Similarly, the lower support wheel 4 is connected to the lower connecting rod 3 through a connecting rod, wherein one end of the connecting rod is fixedly connected to the lower connecting rod 3, and the center of the lower support wheel 4 is installed on the other end of the connecting rod through a pin, so that the lower support wheel 4 rotates around the center of the circle to form a rotating pair, and the two upper support wheels 2 and the two lower support wheels 4 are respectively in line contact with the roller structure 6, thereby forming a kinematic pair.

[0026] Specifically, the roller structure 6 includes a roller 61 and two baffles 62. The roller 61 has symmetrically distributed countersunk holes on both sides; the center positions of the two baffles 62 are provided with cylindrical protrusions, and the two protrusions are respectively embedded in the two countersunk holes; the two sides of the baffle 62 are arc-shaped, and are respectively located between the upper and lower corresponding support wheels 2 and lower support wheels 4, so as to prevent the roller 61 from falling off from between the two upper support wheels 2 and the two lower support wheels 4; the outer circle of the roller 61 is in line contact with the upper support wheel 2 and the lower support wheel 4 respectively.

[0027] In this embodiment, in order to improve the structural stability of the compression spring, the compression spring is installed between the tail end of the upper connecting rod 1 and the tail end of the lower connecting rod 3 through a mounting seat, wherein the mounting seat includes an upper clamping seat, an upper rod, a lower clamping seat and a lower tube, the top of the upper clamping seat is fixedly connected to the tail end of the lower connecting rod 3, the upper clamping seat is connected to the upper rod as a whole, the bottom of the lower clamping seat is fixedly connected to the tail end of the upper connecting rod 1, the lower clamping seat is connected to the lower tube as a whole, the upper rod is inserted and fixed in the lower tube, the compression spring is sleeved on the outer periphery of the upper rod and the lower tube, and is located between the upper clamping seat and the lower clamping seat.

[0028] Working principle of the present invention:

[0029] Normal farming:

[0030] At this time, the compression spring has a certain preload pressure. When the tillage resistance is within the preload range of the compression spring, the automatic obstacle avoidance mechanism does not change and maintains a normal tillage state.

[0031] Buffer status:

[0032] Assume that the hinge point between the upper connecting rod 1 and the frame 7 is A, the two upper supporting points of the two upper supporting wheels 2 are B and B1 respectively, the two lower supporting points of the two lower supporting wheels 4 are C and C1 respectively, and the hinge point between the lower connecting rod 3 and the frame 7 is D;

[0033] Taking the operation of the lower plow body 9 as an example, when the lower plow body 9 encounters a stone and the tillage resistance is greater than the preload of the compression spring, it rotates counterclockwise. At this time, a four-bar linkage ABCD is formed. When the lower connecting rod 3 rotates an angle a1, the upper connecting rod 1 rotates an angle a2. At this time, a2 is greater than a1, and the compression spring is compressed. After the lower plow body 9 passes over the obstacle, the resistance of the lower plow body 9 becomes smaller, and a part of the force of the compression spring is released, so that the lower plow body 9 enters the soil and returns to the working state.

[0034] Likewise, when the upper plow body 8 is turned over to the working state, the above-mentioned action functions can also be realized.

[0035] Embodiment 2:

[0036] like Figure 3 , 4As shown, an embodiment of the present invention discloses a plowing machinery buffer mechanism, comprising an upper connecting rod 1, two upper supporting wheels 2, a lower connecting rod 3, two lower supporting wheels 4, an elastic element 5 and a roller structure 6, wherein the head end of the upper connecting rod 1 is hinged to a frame 7; the upper connecting rod 1 is fixedly connected to an upper plow body 8; the two upper supporting wheels 2 are rotatably mounted on the bottom of the upper connecting rod 1; the head end of the lower connecting rod 3 is hinged to the frame 7; the tail section of the lower connecting rod 3 and the tail section of the upper connecting rod 1 are cross-distributed; the lower connecting rod 3 is fixedly connected to the lower plow body 9; the two lower supporting wheels 4 are rotatably mounted on the top of the lower connecting rod 3; the elastic element 5 is mounted between the tail end of the upper connecting rod 1 and the tail end of the lower connecting rod 3. In this embodiment, the elastic element 5 is a leaf spring; the roller structure 6 is mounted between the two upper supporting wheels 2 and the two lower supporting wheels 4, and is in line contact with the upper supporting wheels 2 and the lower supporting wheels 4, respectively. When encountering an obstacle, the present invention, under the action of the roller structure 6, the upper support wheel 2 and the lower support wheel 4, realizes the clockwise or counterclockwise rotation of the upper connecting rod 1, the upper plow body 8, the lower connecting rod 3 and the lower plow body 9. At the same time, under the elastic action of the leaf spring, it can smoothly cross the obstacle and return to the plowing working state, thereby avoiding missed plowing and improving the stability of the plowing depth.

[0037] In this embodiment, the upper support wheel 2 is connected to the upper connecting rod 1 through a connecting rod, wherein one end of the connecting rod is fixedly connected to the upper connecting rod 1, and the center of the upper support wheel 2 is installed on the other end of the connecting rod through a pin, so that the upper support wheel 2 rotates around the center of the circle to form a rotating pair. Similarly, the lower support wheel 4 is connected to the lower connecting rod 3 through a connecting rod, wherein one end of the connecting rod is fixedly connected to the lower connecting rod 3, and the center of the lower support wheel 4 is installed on the other end of the connecting rod through a pin, so that the lower support wheel 4 rotates around the center of the circle to form a rotating pair, and the two upper support wheels 2 and the two lower support wheels 4 are respectively in line contact with the roller structure 6, thereby forming a kinematic pair.

[0038] Specifically, the roller structure 6 includes a roller 61 and two baffles 62. The roller 61 has symmetrically distributed countersunk holes on both sides; the center positions of the two baffles 62 are provided with cylindrical protrusions, and the two protrusions are respectively embedded in the two countersunk holes; the two sides of the baffle 62 are arc-shaped, and are respectively located between the upper and lower corresponding support wheels 2 and lower support wheels 4, so as to prevent the roller 61 from falling off from between the two upper support wheels 2 and the two lower support wheels 4; the outer circle of the roller 61 is in line contact with the upper support wheel 2 and the lower support wheel 4 respectively.

[0039] The working principle of this embodiment is the same as that of Embodiment 1, and will not be described in detail here.

[0040] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plowing machine buffer mechanism, characterized in that: include: An upper connecting rod, the head end of which is hinged to the frame; the upper connecting rod is fixedly connected to the upper plow body; Two upper support wheels, the two upper support wheels are rotatably mounted on the bottom of the upper connecting rod; A lower connecting rod, wherein the head end of the lower connecting rod is hinged to the frame; the tail section of the lower connecting rod and the tail section of the upper connecting rod are cross-distributed; the lower connecting rod is fixedly connected to the lower plow body; Two lower support wheels, the two lower support wheels are rotatably mounted on the top of the lower connecting rod; An elastic element, the elastic element being installed between the tail end of the upper connecting rod and the tail end of the lower connecting rod; A roller structure, wherein the roller structure is installed between the two upper support wheels and the two lower support wheels, and is in line contact with the upper support wheels and the lower support wheels respectively; and the elastic element is a compression spring or a leaf spring.

2. A plowing machine buffer mechanism according to claim 1, characterized in that: The roller structure includes a roller and two baffles, and the roller has symmetrically distributed countersunk holes on both sides; a cylindrical protrusion is provided at the center position of the two baffles, and the two protrusions are respectively embedded in the two countersunk holes; the two sides of the baffle are arc-shaped, and are respectively located between the upper support wheel and the lower support wheel corresponding to the upper and lower parts; the outer circle of the roller is in linear contact with the upper support wheel and the lower support wheel respectively.

Images