CN213662352U

CN213662352U - Implement adjusting device of three-point suspension mechanism

Info

Publication number: CN213662352U
Application number: CN202022515028.2U
Authority: CN
Inventors: 薛传林
Original assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Current assignee: Jiangsu World High Tech Agricultural Equipment Co Ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-13
Anticipated expiration: 2030-11-03

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to machines adjusting device of three point suspension mechanism, including machines hydraulic system and the automobile body that is used for pulling the machines, hydraulic system includes the lifting cylinder, hydraulic system's oil inlet pipeline and lifting cylinder are connected through the switching-over valve between, the machines are connected to the piston rod of lifting cylinder, the handle of switching-over valve is connected with the actuating mechanism of its action of drive, the servo control of tractor machines has been realized to this patent content, realized controlling the correspondence of handle position and tractor machines high position, the position that the handle action bars was placed is all corresponding the high position of machines, need not carry out artifical supervision to the machines position in the adjustment process, high efficiency.

Description

Implement adjusting device of three-point suspension mechanism

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to machines adjusting device of three point suspension mechanism.

Background

Along with the modernization of agricultural machinery implemented by the country, the requirement of users on agricultural machinery is higher and higher, and the requirement of farmers on the operating comfort of tractors is higher and higher. The height of the agricultural implement is controlled by the handle, and the height of the agricultural implement is adjusted by the handle through visual observation by a manipulator, so that the operation or transportation is prevented from being influenced by too high or too low of the stay position of the implement, but the efficiency of the adjusting mode is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the machines that prior art exists adjust inefficiency through artifical visual, the utility model provides an efficient three point linkage's machines adjusting device.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an implement adjusting device of three point suspension mechanism, includes implement hydraulic system and is used for pulling the automobile body of implement, hydraulic system includes the lift cylinder, hydraulic system's oil inlet pipeline and lift cylinder between be connected through the switching-over valve, the piston rod of lift cylinder connect the implement, the handle of switching-over valve be connected with the actuating mechanism of its action of drive.

Further, the first end of machines rotate and be connected with the pull rod, the second end of machines rotate and be connected with the lower link, pull rod and lower link all rotate and connect on the automobile body, the lower link on rotate and be connected with the lifting rod, the other end of lifting rod rotate and be connected with the rocker, the other end of rocker rotate and connect on the automobile body, the piston rod and the rocker of lift cylinder rotate and be connected.

Furthermore, the driving mechanism comprises a control operation rod which is rotationally connected with the vehicle body, one end of the control operation rod is fixed with a first sliding sleeve, the first sliding sleeve is connected with a control connecting rod in a sliding way, a handle of the reversing valve is rotationally connected with an action sliding block, a second sliding sleeve is fixed on the action sliding block, the control connecting rod is connected with the second sliding sleeve in a sliding way, the control connecting rod is connected with a reset mechanism which drives the control connecting rod to reset,

the resetting mechanism comprises a mounting connecting rod which is rotatably connected with one end of the control connecting rod, which is far away from the control operating rod, and one end of the mounting connecting rod, which is far away from the control connecting rod, is fixed on the rocker. The handle of the reversing valve is driven to return by the installation of the connecting rod, so that a closed-loop system is formed, and the handle of the reversing valve is returned without extra control force.

Furthermore, the reversing valve is a three-position six-way valve and comprises an opening A, an opening B, an opening C, an opening D, an opening E and an opening F, the opening B and the opening D are connected with an oil return pipeline of a hydraulic system, the opening C is connected with a rodless cavity of a lifting oil cylinder, the opening E and the opening F are connected with an oil inlet pipeline of the hydraulic system, and when the reversing valve is in a middle position, the opening A, the opening C, the opening D and the opening F are closed, and the opening B is communicated with the opening E; when the reversing valve is in the left position, the port B and the port E are closed, the port A is communicated with the port D, and the port C is communicated with the port F; when the reversing valve is in the right position, the port B and the port E are closed, the port A is communicated with the port F, and the port C is communicated with the port D.

Furthermore, a pump and an oil absorption filter are arranged on an oil inlet pipeline of the hydraulic system.

Has the advantages that:

(1) the servo control of the tractor machine tool is realized, the correspondence between the position of the control handle and the height position of the tractor machine tool is realized, the positions where the handle operating rods are placed correspond to the height position of the machine tool, manual supervision on the position of the machine tool is not needed in the adjusting process, and the efficiency is high;

(2) the three-point suspension system is a suspension system commonly used by tractors and is standard configuration of the tractors, and the three-point suspension system realizes control comfort and efficiency through a connecting rod structure on the basis, saves cost and has obvious advancement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an implement adjusting device of a three-point suspension mechanism of the present invention.

The oil absorption filter comprises 1, an oil absorption filter, 2, a pump, 3, a reversing valve, 7, an installation connecting rod, 8, a lower pull rod, 9, a lifting oil cylinder, 10, a rocker, 11, a control connecting rod, 12, an action sliding block, 13, a control operating rod, 14, a lifting rod, 15, an upper pull rod, 16 and a machine tool.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Referring to fig. 1, the implement 16 adjusting device of the three-point suspension mechanism comprises an implement 16 hydraulic system and a vehicle body for drawing the implement 16, wherein the hydraulic system comprises a lifting oil cylinder 9, an oil inlet pipeline of the hydraulic system is connected with the lifting oil cylinder 9 through a reversing valve 3, a piston rod of the lifting oil cylinder 9 is connected with the implement 16, and a handle of the reversing valve 3 is connected with a driving mechanism for driving the reversing valve 3 to act.

The first end of machines 16 rotates and is connected with pull rod 15, and the second end of machines 16 rotates and is connected with lower link 8, and pull rod 15 and lower link 8 all rotate to be connected on the automobile body, rotate on the lower link 8 and be connected with lift bar 14, and the other end of lift bar 14 rotates and is connected with rocker 10, and the other end of rocker 10 rotates and connects on the automobile body, and the piston rod and the rocker 10 of lift cylinder 9 rotate and are connected.

The driving mechanism comprises a control operation rod 13 which is rotationally connected on the vehicle body, one end of the control operation rod 13 is fixed with a first sliding sleeve, the first sliding sleeve is connected with a control connecting rod 11 in a sliding way, a handle of the reversing valve 3 is rotationally connected with an action sliding block 12, the action sliding block 12 is fixed with a second sliding sleeve, the control connecting rod 11 is connected with the second sliding sleeve in a sliding way, the control connecting rod 11 is connected with a reset mechanism which drives the control connecting rod 11 to reset,

the resetting mechanism comprises a mounting connecting rod 7 which is rotatably connected to one end of the control connecting rod 11 far away from the control operating rod 13, and one end of the mounting connecting rod 7 far away from the control connecting rod 11 is fixed on the rocker 10.

The reversing valve 3 is a three-position six-way valve, the reversing valve 3 comprises an opening A, an opening B, an opening C, an opening D, an opening E and an opening F, the opening B and the opening D are connected with an oil return pipeline of a hydraulic system, the opening C is connected with a rodless cavity of the lifting oil cylinder 9, the opening E and the opening F are connected with an oil inlet pipeline of the hydraulic system, when the reversing valve 3 is in a middle position, the opening A, the opening C, the opening D and the opening F are closed, and the opening B is communicated with the opening E; when the reversing valve 3 is in the left position, the port B and the port E are closed, the port A is communicated with the port D, and the port C is communicated with the port F; when the reversing valve 3 is positioned at the right position, the port B and the port E are closed, the port A is communicated with the port F, and the port C is communicated with the port D.

The oil inlet pipeline of the hydraulic system is provided with a pump 2 and an oil absorption filter 1.

The working principle is as follows:

in the steady state in fig. 1, the implement 16 is at a stationary position, when the control operation rod 13 rotates clockwise, the control operation rod 13 pushes the control connecting rod 11 to rotate around the hinge shaft a, the action slide block 12 is forced to pull the spool of the reversing valve 3 to move rightwards, the reversing valve 3 has the left function, the hydraulic oil of the pump 3 enters the rodless cavity of the lifting oil cylinder 9 through the reversing valve 3, the piston rod is pushed out, the rocker 10 is pushed to move anticlockwise, meanwhile, the rocker 10 is connected with the lifting rod 14, and the lifting rod 14 is connected with the lower pull rod 8. When the rocker 10 moves in a counterclockwise direction, the lifting rod 14 is connected and lifted, and the lower link 8 rotates counterclockwise about the pivot point, forcing the implement 16 upward. Along with the anticlockwise rotation of the rocker 10, the control rod 11 forces the action slide block 12 to push the valve core of the reversing valve 3 to reset leftwards, the hydraulic control is stopped, the machine tool rises to a certain height to stop, and the position correspondence of the position of the control operation rod 13 and the position of the machine tool 16 is realized.

On the contrary, when the control operation rod 13 rotates anticlockwise, the control operation rod 13 pushes the control connecting rod 11 to rotate around the hinge shaft a, the action slide block 12 is forced to push the valve core of the reversing valve 3 to move leftwards, the reversing valve takes 3 right functions, the rodless cavity of the lifting oil cylinder 9 is communicated with the oil tank, the piston rod is pushed to move downwards, the rocker 10 is pulled to move clockwise, meanwhile, the rocker 10 is connected with the lifting rod 14, and the lifting rod 14 is connected with the lower pull rod 8. When the rocker 10 moves in a clockwise direction, the lifting rod 14 is depressed and the lower link 8 rotates clockwise about the pivot point, forcing the implement 16 downward. Along with the clockwise rotation of the rocker 10, the control connecting rod 11 forces the action slide block 12 to push the 3-way valve spool to reset and stop hydraulic control, the implement 16 descends to a certain height and stops, and the control operation rod 13 and the implement 16 correspond in position.

Here, the driving force required to drive the spool of the direction valve 3 is smaller than the frictional force at the rotational position of the control operation lever 13 at b, so that the driving can be smoothly performed.

The position of the above-mentioned rotary connection can be set to be articulated according to the requirements.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The machine tool adjusting device of the three-point suspension mechanism is characterized by comprising a machine tool (16) hydraulic system and a vehicle body used for drawing the machine tool (16), wherein the hydraulic system comprises a lifting oil cylinder (9), an oil inlet pipeline of the hydraulic system is connected with the lifting oil cylinder (9) through a reversing valve (3), a piston rod of the lifting oil cylinder (9) is connected with the machine tool (16), and a handle of the reversing valve (3) is connected with a driving mechanism for driving the reversing valve (3) to act.

2. The implement adjustment device of a three-point hitch mechanism of claim 1, further comprising: the first end of machines (16) rotate and be connected with pull rod (15), the second end of machines (16) rotate and be connected with lower link (8), upper link (15) and lower link (8) all rotate and connect on the automobile body, lower link (8) on rotate and be connected with lifting rod (14), the other end of lifting rod (14) rotate and be connected with rocker (10), the other end of rocker (10) rotate and connect on the automobile body, the piston rod and the rocker (10) of lift cylinder (9) rotate and be connected.

3. The implement adjustment device of a three-point hitch mechanism of claim 1, further comprising: actuating mechanism including rotating control lever (13) of connection on the automobile body, the one end of control lever (13) be fixed with first sliding sleeve, first sliding sleeve sliding connection have control connecting rod (11), rotate on the handle of switching-over valve (3) and be connected with effect slider (12), effect slider (12) on be fixed with the second sliding sleeve, control connecting rod (11) and second sliding sleeve sliding connection, control connecting rod (11) be connected with the canceling release mechanical system that drives its reset.

4. An implement adjustment device of a three-point hitch mechanism as claimed in claim 3, wherein: the resetting mechanism comprises a mounting connecting rod (7) which is rotatably connected to one end, far away from the control operating rod (13), of the control connecting rod (11), and one end, far away from the control connecting rod (11), of the mounting connecting rod (7) is fixed on the rocker (10).

5. An implement adjustment device of a three-point hitch mechanism as claimed in claim 3, wherein: the reversing valve (3) is a three-position six-way valve, the reversing valve (3) comprises an opening A, an opening B, an opening C, an opening D, an opening E and an opening F, the opening B and the opening D are connected with an oil return pipeline of a hydraulic system, the opening C is connected with a rodless cavity of a lifting oil cylinder (9), the opening E and the opening F are connected with an oil inlet pipeline of the hydraulic system, when the reversing valve (3) is in a middle position, the opening A, the opening C, the opening D and the opening F are closed, and the opening B is communicated with the opening E; when the reversing valve (3) is in the left position, the port B and the port E are closed, the port A is communicated with the port D, and the port C is communicated with the port F; when the reversing valve (3) is positioned at the right position, the port B and the port E are closed, the port A is communicated with the port F, and the port C is communicated with the port D.

6. The implement adjustment device of a three-point hitch mechanism of claim 1, further comprising: the oil inlet pipeline of the hydraulic system is provided with a pump (2) and an oil absorption filter (1).