CN214206321U

CN214206321U - Central pull rod quick hanging device for suspension type farm implements

Info

Publication number: CN214206321U
Application number: CN202023035882.5U
Authority: CN
Inventors: 李存斌; 陈宝昌; 王立军; 林君堂; 张范良
Original assignee: Heilongjiang Agricultural Machinery Engineering Research Institute
Current assignee: Heilongjiang Agricultural Machinery Engineering Research Institute
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-09-17
Anticipated expiration: 2030-12-10

Abstract

Suspended agricultural implements central tie rod quick hitch belongs to agricultural machinery; side plates are fixed on both ends of the upper and lower shafts, a hanging plate with a hook pin is set on the upper shaft, and arcs are arranged on the side plates The L-shaped tie-rod brackets are hingedly mounted on the inner wall of the side plate through the pin shaft D, and the pin shaft A installed on the L-shaped tie-rod frame is fitted into the arc-shaped runner hole A, and the pin shaft A linkage plate is installed on the end of A, the front hook is set on the lower shaft, and the rear hook is hung and installed on the arc-shaped slide hole C of the linkage plate through the pin B, and the pin B is inserted into the arc-shaped slide hole A. The pin shaft C with the eccentric wheel is inserted into the arc-shaped slideway hole B on the side plate and the round holes of the front and rear hooks in turn, and the upper and lower holes for fixed installation are arranged on the side plate; this device realizes the center of the tractor. The quick connection between the tie rod and the hanging point on the hanging agricultural implement has a unique and reasonable structure, the connection operation is simple and convenient, the connection efficiency is high, the applicability is strong, and the use is reliable.

Description

Central pull rod quick hanging device for suspension type farm implements

Technical Field

The invention belongs to agricultural machinery, and mainly relates to a central pull rod and a suspension type agricultural implement hitching device of a tractor.

Background

The central pull rod of the three-point suspension mechanism of the existing tractor adopts a ball hinge structure arranged at the rear end part, when the central pull rod is articulated with an upper suspension point of a three-point suspension device of an agricultural implement, the central pull rod of the tractor and the upper suspension point of the agricultural implement are articulated by a method that an implement operator sequentially inserts an articulation pin into a ball hinge of the central pull rod and a hole of the upper suspension point, and the coaxial center between the ball hinge on the central pull rod and the upper suspension point of the agricultural implement is very difficult to adjust in alignment during the articulation. In order to solve the problems, in recent years, a central pull rod with a clamping hook structure arranged at the rear end part of the central pull rod is applied to a hydraulic suspension mechanism of a tractor, and is connected with a suspension pin in a clamping and locking mode.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and designs a central pull rod quick hooking device of a suspended agricultural implement with a new structure by combining the actual requirements of suspension connection operation of the suspended agricultural implement, so that the aims of strong applicability, high generalization degree, great improvement of hooking efficiency, labor saving and time saving are achieved.

The purpose of the invention is realized as follows: the two ends of the upper shaft and the lower shaft are mutually parallel and are symmetrically and fixedly provided with side plates, the upper shaft is rotatably sleeved with two hanging plates, and the hanging pins are arranged on the lower end parts of the two hanging plates and positioned in grooves at the lower parts of the side plates; the side plates on two sides are symmetrically provided with an arc-shaped chute hole A and an arc-shaped chute hole B, the inner side walls of the side plates on two sides are rotatably hinged with an L-shaped pull rod frame through a pin shaft D, the pin shaft A arranged on the L-shaped pull rod frame is movably inserted in the arc-shaped chute hole A, and a linkage plate is arranged on the end part of the pin shaft A and is positioned on the outer wall surface of the side plate; the lower shaft is rotatably sleeved with two front hooks, a rear hook is hung and installed in an arc-shaped slideway hole C on the lower part of the linkage plate through an inserting pin shaft B, the pin shaft C is movably inserted and installed in the arc-shaped slideway hole B and is sequentially inserted in series into round holes in the rear hook and the front hook, an eccentric wheel is rotatably sleeved on the pin shaft C and positioned in the inner side of a round hole of the rear hook, the rotation center of the eccentric wheel is not concentric with the center of the round hole of the rear hook, and the outer part of the eccentric wheel is in contact fit with the round hole of the rear hook; the two side plates are symmetrically provided with an upper fixed mounting hole and a lower fixed mounting hole respectively, so that the central pull rod quick coupler of the suspension type agricultural implement is formed.

The invention creates a central pull rod buckle locking mode which adopts a hitching pin and hook structure with adjustable position and self-return locking, realizes the quick hitching between the central pull rod of the tractor and a hanging point on a hanging agricultural implement, and has the characteristics of novel, unique and reasonable structure, simple and convenient hitching control, high hitching efficiency, strong applicability and reliable use.

Drawings

FIG. 1 is a schematic view of the general structure of a central pull rod quick hitch of a suspended agricultural implement;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is the view of FIG. 1 in partial section;

fig. 5 is a three-dimensional schematic diagram of the general structure of the central pull rod quick hitch of the suspended agricultural implement.

Description of part numbers in the figures:

1. l-shaped pull rod frame, 2, side plates, 3, pin shafts A and 4, fixed mounting upper holes, 5, lower shafts, 6, rear hooks, 7, fixed mounting lower holes, 8, hanging pins, 9, front hooks, 10, pin shafts B and 11, pin shafts C and 12, arc-shaped chute holes B and 13, pin shafts D and 14, arc-shaped chute holes C and 15, linkage plates, 16, arc-shaped chute holes A and 17, hanging plates, 18, upper shafts, 19 and eccentric wheels.

Detailed Description

The following detailed description of the inventive embodiments is provided in connection with the accompanying drawings. A central pull rod quick hitching device of a suspension type agricultural implement is characterized in that side plates 2 are fixedly arranged on two end parts of an upper shaft 18 and a lower shaft 5 in parallel and symmetrically, two hanging plates 17 are rotatably sleeved on the upper shaft 18, and a hitching pin 8 is arranged on the lower end parts of the two hanging plates 17 and is positioned in a groove at the lower part of the side plate 2; the side plates 2 on two sides are symmetrically provided with arc-shaped slide way holes A16 and arc-shaped slide way holes B12, the opposite inner side wall surfaces of the side plates 2 on two sides are rotatably hinged with an L-shaped pull rod frame 1 through a pin shaft D13, a pin shaft A3 arranged on the L-shaped pull rod frame 1 is movably inserted in the arc-shaped slide way holes A16, and a linkage plate 15 is arranged at the outer wall surface part of the side plate 2 on the end part of the pin shaft A3; the lower shaft 5 is rotatably sleeved with two front hooks 9, a rear hook 6 is hung and installed in an arc-shaped slide way hole C14 on the lower part of the linkage plate 15 through an insertion pin shaft B10, a pin shaft C11 is movably inserted and installed in the arc-shaped slide way hole B12 and is sequentially connected in series and inserted into round holes in the rear hook 6 and the front hook 9, an eccentric wheel 19 is rotatably sleeved on the pin shaft C11 and positioned at the inner side of the round hole of the rear hook 6, the rotation center of the eccentric wheel 19 is not concentric with the center of the round hole of the rear hook 6, and the outer part of the eccentric wheel 19 is in contact fit with the round hole of the rear hook 6; the two side plates 2 are symmetrically provided with an upper fixed mounting hole 4 and a lower fixed mounting hole 7 respectively.

When in hanging use, the whole body of the device is fixedly arranged on the upper hanging point part of the three-point hanging device of the hanging type agricultural implement by utilizing the upper fixing mounting hole 4 and the lower fixing mounting hole 7; when the L-shaped pull rod frame 1 is lifted upwards, the L-shaped pull rod frame 1 rotates relatively on the fixed ground side plate 2 around a pin shaft D13, a pin shaft A3 moves upwards in an arc-shaped chute hole A16 and pulls a pin shaft B10 to move upwards synchronously through a linkage plate 15 to drive a rear hook 6 to rotate around a pin shaft C11, the rear hook 6 is pushed towards the rear side by an eccentric wheel 19 in a round hole on the rear hook 6 while the rear hook 6 rotates around a pin shaft C11, the rear hook 6 rises to be separated from the clamping fit with a hanging pin 8, a pin shaft C11 continues to move upwards in an arc-shaped chute hole B12, the pin shaft C11 is utilized to drive a front hook 9 to rotate around a lower shaft 5, at the moment, the hanging pin 8 is separated from the clamping locking fit with the buckles of the rear hook 6 and the front hook 9, the hanging plate 17 is rotated on an upper shaft 18 to enable the hanging pin 8 to be separated from the groove of the side plate 2, and a central pull rod is locked and connected to the hanging pin 8 by the clamping buckle, at the moment, the tractor retreats, under the action of the rear thrust of the tractor and the matching control of the hanging plate 17, the front hook 9 and the rear hook 6 are jacked up by the hanging pin 8, the hanging pin 8 enters the groove of the side plate 2, and the front hook 9 and the rear hook 6 are locked by the automatic return, so that the quick hanging is completed.

Claims

1. The utility model provides a quick connector of central pull rod of suspension type agricultural implement which characterized in that: the two ends of the upper shaft (18) and the lower shaft (5) are mutually parallel and are symmetrically and fixedly provided with the side plates (2), the upper shaft (18) is rotatably sleeved with the two hanging plates (17), and the hanging pins (8) are arranged on the lower end parts of the two hanging plates (17) and are positioned in grooves at the lower parts of the side plates (2); arc-shaped slideway holes A (16) and arc-shaped slideway holes B (12) are symmetrically arranged on the side plates (2) at two sides respectively, an L-shaped pull rod frame (1) is rotatably hinged on the inner side wall surfaces of the side plates (2) at two sides through a pin shaft D (13), a pin shaft A (3) arranged on the L-shaped pull rod frame (1) is movably inserted in the arc-shaped slideway holes A (16), and a linkage plate (15) is arranged at the outer wall surface part of the side plates (2) on the end part of the pin shaft A (3); the lower shaft (5) is rotatably sleeved with two front hooks (9), a rear hook (6) is hung and installed in an arc-shaped slide way hole C (14) on the lower portion of a linkage plate (15) through an insertion pin shaft B (10), a pin shaft C (11) is movably inserted and installed in an arc-shaped slide way hole B (12) and is sequentially connected in series and inserted into circular holes in the rear hook (6) and the front hook (9), an eccentric wheel (19) is rotatably sleeved on the pin shaft C (11) and positioned on the inner side of the circular hole of the rear hook (6), the rotation center of the eccentric wheel (19) is not concentric with the center of the circular hole of the rear hook (6), and the outer portion of the eccentric wheel (19) is in contact fit with the circular hole of the rear hook (6); the two side plates (2) are symmetrically provided with an upper fixed mounting hole (4) and a lower fixed mounting hole (7) respectively.