CN214838219U - Mechanism for converting rotation into reciprocating swing - Google Patents

Abstract

The invention discloses a mechanism for converting rotation into reciprocating swing, which comprises a transmission shaft, a bevel gear set, a crankshaft, a fisheye universal joint, a Hooke hinge, a metamorphic mechanism spring, a connecting piece, a swing rod shaft and a swing rod. According to the invention, through the combination of the crankshaft, the fisheye universal joint and the hooke hinge, uniform rotation is converted into periodic reciprocating swing, the rotation along the X axis is converted into swing of an XY plane through the bevel gear set and the swing rod shaft, and a force locking mechanism formed by the metamorphic mechanism spring and the hooke hinge limits derived redundant freedom degree in the three-dimensional space motion process, so that the structure motion is stable; and meanwhile, the reliability of the mechanism is improved due to the low-pair connection.

Description

Mechanism for converting rotation into reciprocating swing

Technical Field

The invention relates to a mechanism for converting the rotation of a motor into reciprocating swing by an agricultural machine transmission method, in particular to a mechanism capable of converting the rotation of the motor into the reciprocating swing in the vertical direction in small-sized picking agricultural machinery.

Background

With the development of times and the increase of the total value of national production, the total economic value of China is continuously increased, and agriculture plays an important role in the life of people, which is the most basic guarantee of the life of people, and the development of agriculture also becomes an important mark of the life level of people. Modern agriculture develops towards mechanization, the machines gradually replace original labor tools and original labor methods of people, the modern agriculture has unprecedented development potential, and the mechanization agriculture era has the characteristics of high efficiency, safety and convenience. At present, a plurality of fruit trees are difficult to climb, branches are scattered or thorns exist on the fruit trees, such as jujube trees, plum trees, orange trees and the like, and the traditional picking mode has high difficulty and low efficiency. The product is designed for processing the working conditions, the picking efficiency can be greatly improved, the picking difficulty is reduced, and the cost is low.

For the situation, the existing foreign technical equipment mainly comprises large-scale equipment, but is not suitable for the development requirement of Chinese agriculture; in addition, for fruit picking under the working conditions, no good solution is provided at home, and some manual auxiliary picking equipment which is low in picking efficiency and difficult to operate mainly exists, so that the equipment cannot meet the current production requirements.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a transmission mechanism for assisting a manual picking machine to overcome the defects that the existing small-sized picking agricultural machine cannot pick in batches and is not suitable for being used for terrain operations of small and medium-sized orchards, hilly mountains and the like.

In order to solve the technical problems, the invention adopts the following technical scheme:

a mechanism for converting rotation into reciprocating swing comprises a transmission shaft, a bevel gear set, a crankshaft, a fisheye universal joint, a hooke hinge, a spring, a connecting piece, a swing rod shaft and a swing rod, wherein the transmission shaft and the crankshaft are mounted on the bevel gear set through keys, the transmission shaft transmits the rotation of a motor to the bevel gear set, the bevel gear set drives the crankshaft to rotate, the crankshaft is mounted on a fisheye universal joint bearing sleeve and drives the fisheye universal joint to move, the fisheye universal joint is arranged at two ends of the hooke hinge and drives the connecting piece to swing, the connecting piece is arranged on the fisheye universal joint bearing sleeve and connected to the swing rod shaft, the swing rod is arranged on the swing rod shaft to periodically swing, and the spring is arranged outside the hooke hinge and used for limiting the degree of freedom of the mechanism.

The invention has the following remarkable effects:

the structure of the invention converts the rotation motion along the X axis into the swing motion on the XY surface, the mechanism adopts the combination of a Hooke hinge and a fisheye universal joint to convert the uniform rotation into the periodic reciprocating swing, and a force locking mechanism formed by a spring and the Hooke hinge limits the derived redundant freedom degree in the three-dimensional space motion process, so that the structure motion is stable; the low pair connection increases the reliability of the mechanism; the swing angle of the tree branch swing limiting device is limited to 30 degrees during structural design, and the force applied to the tree branch during swing of the swing rod is always within the range, so that the efficiency of the tree branch swing limiting device is maximized.

Drawings

FIG. 1 is a schematic structural view of the mechanism of the present invention;

FIG. 2 is an exploded view of the structure of the mechanism of the present invention;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a mechanism for converting rotation into reciprocating swing comprises a transmission shaft 1, a bevel gear set, a crankshaft 4, a first fisheye universal joint 5, a hooke hinge 6, a spring 7, a second fisheye universal joint 8, a connecting piece 9, a swing rod shaft 10 and a swing rod 11, wherein the bevel gear set comprises a first bevel gear 2 and a second bevel gear 3, the transmission shaft 1 is mounted on the first bevel gear 2 through a flat key, the second bevel gear 3 is mounted on a lower end shaft of the crankshaft 4 through a flat key, the first bevel gear 2 is meshed with the second bevel gear 3 to form the bevel gear set, the rotation of the transmission shaft 1 along an X axis is transmitted to the rotation of the crankshaft 4 along a Y axis, a bearing sleeve of the first fisheye universal joint 5 is horizontally mounted on an intermediate shaft of the crankshaft 4, the hooke hinge 6 is respectively mounted on the first fisheye universal joint 5 and the second fisheye universal joint 8 through end threads of the first fisheye universal joint 2, the spring 7 is mounted outside the hooke hinge 6 to form a metamorphic mechanism, structural kinematic pairs are reduced, a bearing sleeve of a second fisheye universal joint 8 is vertically arranged on a shaft of a connecting piece 9, the connecting piece 9 is arranged on a swing rod shaft 10, a swing rod 11 is arranged on the swing rod shaft 10, a crankshaft 4 drives a bearing sleeve of a first fisheye universal joint 5 to rotate along the Y shaft when rotating along the Y shaft, the first fisheye universal joint 5 drives an metamorphic mechanism to swing back and forth on a ZX plane, the metamorphic mechanism drives a second fisheye universal joint 8 to swing, the second fisheye universal joint 8 drives the connecting piece 9 to swing back and forth along an XY plane, the swing rod shaft 10 limits the degree of freedom of the connecting piece 9 along the Z shaft, and the swing rod shaft 10 drives the swing rod 11 to swing back and forth on the XY plane, so that the purpose of converting the rotating motion along the X shaft into the reciprocating swinging motion on the XY plane is achieved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims (1)

1. A mechanism for converting rotation into reciprocating swing comprises a transmission shaft (1), a first bevel gear (2), a second bevel gear (3), a crankshaft (4), a first fisheye universal joint (5), a metamorphic mechanism, a second fisheye universal joint (8), a connecting piece (9), a swing rod shaft (10) and a swing rod (11); the metamorphic mechanism is characterized by comprising a Hooke hinge (6) and a spring (7), wherein the spring (7) limits excessive movement of the Hooke hinge (6); the first bevel gear (2) is arranged on the transmission shaft (1), and the second bevel gear (3) is arranged on the crankshaft (4); the rotation of the transmission shaft (1) is transmitted to a crankshaft (4) by a bevel gear set formed by combining a first bevel gear (2) and a second bevel gear (3) and drives the crankshaft (4) to rotate, the crankshaft (4) is installed on a bearing sleeve of a first fisheye universal joint (5) and drives the first fisheye universal joint (5) to move, the first fisheye universal joint (5) and a second fisheye universal joint (8) are arranged at two ends of a hook hinge (6) and drive a connecting piece (9) to swing, the connecting piece (9) is arranged on a bearing sleeve of the second fisheye universal joint (8) and connected onto a swing rod shaft (10), and a swing rod (11) is installed on the swing rod shaft (10) to swing periodically.

Images