CN111845936A - Walking steering linkage control mechanism of crawler tractor - Google Patents

Walking steering linkage control mechanism of crawler tractor Download PDF

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Publication number
CN111845936A
CN111845936A CN202010775467.9A CN202010775467A CN111845936A CN 111845936 A CN111845936 A CN 111845936A CN 202010775467 A CN202010775467 A CN 202010775467A CN 111845936 A CN111845936 A CN 111845936A
Authority
CN
China
Prior art keywords
steering
arm
pull rod
crawler tractor
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010775467.9A
Other languages
Chinese (zh)
Inventor
张后才
储维
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu World Agricultural Machinery Co Ltd
Original Assignee
Jiangsu World Agricultural Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu World Agricultural Machinery Co Ltd filed Critical Jiangsu World Agricultural Machinery Co Ltd
Priority to CN202010775467.9A priority Critical patent/CN111845936A/en
Publication of CN111845936A publication Critical patent/CN111845936A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/06—Endless track vehicles with tracks without ground wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/20—Links, e.g. track rods

Abstract

The invention relates to the technical field of tractor control mechanisms, in particular to a walking and steering linkage control mechanism of a crawler tractor, which comprises a rotating shaft arm, a steering gear, a steering cam and a sleeve, wherein two ends of the rotating shaft arm are respectively connected with a left steering control arm and a right steering control arm through a pull rod assembly and a rocker arm assembly; the steering mechanism is characterized in that the rotating shaft arm is arranged on a steering mechanism, the steering mechanism is arranged on a sliding rail in a sliding manner, and a chassis base of the steering mechanism is connected with the operating rod through a fifth pull rod; the steering cam is connected with the direction rotating arm and can drive the direction rotating arm to rotate; the sleeve is connected with the steering wheel, and a sliding shaft is arranged in the sleeve in a sliding mode. The invention can directly control the advancing, retreating and steering of the crawler tractor, has simple and convenient operation, ensures the stepless adjustment of the walking speed of the crawler tractor through the left steering arm and the right steering arm of the linkage double pump, and can realize the differential steering and zero steering of the tractor in situ.

Description

Walking steering linkage control mechanism of crawler tractor
Technical Field
The invention relates to the technical field of tractor control mechanisms, in particular to a walking and steering linkage control mechanism of a crawler tractor.
Background
For the crawler tractor, the advancing and the backing as well as the steering of the walking are controlled by different control mechanisms, so that the control mechanism has a relatively complex structure and is complex to operate.
Disclosure of Invention
The invention solves the problems in the related technology, provides a caterpillar tractor walking and steering linkage control mechanism, can directly control the advancing, retreating and steering of the caterpillar tractor, is simple and convenient to operate, enables the walking speed of the caterpillar tractor to be steplessly adjustable through a left steering arm and a right steering arm of a linkage double pump, and can realize the in-situ differential steering and zero steering of the tractor.
In order to solve the technical problems, the invention is realized by the following technical scheme: a crawler tractor walking steering linkage control mechanism comprises:
the two ends of the rotating shaft arm are respectively connected with the left steering control arm and the right steering control arm through a pull rod assembly and a rocker arm assembly;
the steering gear comprises a steering gear, a steering gear arm, a sliding rail, a chassis base and a control lever, wherein the steering gear is arranged on the steering gear;
the steering cam is connected with the direction rotating arm and can drive the direction rotating arm to rotate;
the sleeve, the sleeve links to each other just with the steering wheel slidable mounting has the slip shaft in the sleeve.
Preferably, the pull rod assembly comprises a first pull rod, a second pull rod, a third pull rod and a fourth pull rod, and the rocker arm assembly comprises a first front rocker arm and a second front rocker arm; first pull rod and second pull rod are connected respectively to pivot arm both ends, first pull rod and second pull rod link to each other with the one end of rocking arm before first rocking arm and the second respectively, the one end of third pull rod and fourth pull rod is connected respectively to the other end of rocking arm before first rocking arm and the second, the other end of third pull rod and fourth pull rod is connected accuse left steering arm and accuse right steering arm respectively.
Preferably, the left side and the right side of the steering cam are both provided with limit protrusions for limiting the angle of the left-right rotation of the steering wheel.
Preferably, the direction tumbler is provided with a bearing, and the direction cam drives the direction tumbler to rotate through the bearing.
Preferably, a return spring is mounted on the direction rotating arm.
Preferably, the inner hole of the sleeve is a hexagonal hole, and the sliding shaft is a hexagonal shaft matched with the inner hole of the sleeve.
Compared with the prior art, the invention has the beneficial effects that: the crawler tractor can move forwards, backwards and turn by a set of control mechanism, and is simple and convenient to operate; the walking speed of the crawler tractor can be steplessly adjusted by linking a left steering arm and a right steering arm of the duplex pump, and the in-situ differential steering and zero turning of the tractor can be realized; the control lever, the pull rod and the like are linked to the double pump to control the right steering arm and the left steering arm to swing forwards or backwards in a consistent way, the rotation angles are the same, so that the flow entering the left walking motor and the right walking motor are the same in size and direction, the swing angle of the steering arm is changed within a certain range, and the flow entering the left motor and the right motor correspondingly is changed within a certain range, so that the stepless adjustment of the forward and backward speed of the tractor is realized; the direction rotating arm is provided with the return spring, and when the two hands are loosened after the steering wheel is rotated, the return spring can drive the direction rotating arm to automatically return, so that the steering wheel automatically returns, the operation is more labor-saving, and the steering wheel meets the ergonomics.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an M-direction view of fig. 1 of the present invention.
In the figure:
1. the steering mechanism comprises a rotating shaft arm, 2, a first pull rod, 3, a second pull rod, 4, a first front rocker arm, 5, a second front rocker arm, 6, a third pull rod, 7, a fourth pull rod, 8, a left steering arm, 9, a right steering arm, 10, a steering gear, 11, a sliding rail, 12, a fifth pull rod, 13, a control rod, 14, a steering cam, 15, a direction rotating arm, 1501, a bearing, 16, a sleeve, 17, a steering wheel, 18, a sliding shaft, 19 and a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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.
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 unless specifically stated otherwise. 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 is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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 the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 2, a walking steering linkage control mechanism of a crawler tractor comprises a rotating shaft arm 1, a steering gear 10, a steering cam 14 and a sleeve 16, wherein two ends of the rotating shaft arm 1 are respectively connected with a left steering control arm 8 and a right steering control arm 9 through a pull rod assembly and a rocker arm assembly; the rotating shaft arm 1 is arranged on a steering gear 10, the steering gear 10 is arranged on a slide rail 11 in a sliding manner, a chassis base of the steering gear 10 is connected with an operating rod 13 through a fifth pull rod 12, when the operating rod 13 is moved back and forth, the operating rod 13 drives the steering gear 10 to slide back and forth on the slide rail 11 through the fifth pull rod 12, and therefore the tractor is in a straight-line driving state; the steering cam 14 is connected with the direction rotating arm 15 and can drive the direction rotating arm 15 to rotate; the sleeve 16 is connected with a steering wheel 17, a sliding shaft 18 is arranged in the sleeve 16 in a sliding mode, and the sliding shaft 18 can slide along the axial direction of the sleeve 16, so that when the steering machine 10 is at any position of the slide rail 11, the sleeve 16 of the steering wheel 17 can transmit rotation to the sliding shaft 18, and the tractor can steer when moving forwards or backwards.
In one embodiment, the lever assembly comprises a first lever 2, a second lever 3, a third lever 6 and a fourth lever 7, the rocker arm assembly comprising a first front rocker arm 4 and a second front rocker arm 5; the two ends of the rotating shaft arm 1 are respectively connected with a first pull rod 2 and a second pull rod 3, the first pull rod 2 and the second pull rod 3 are respectively connected with one ends of a first front rocker arm 4 and a second front rocker arm 5, the other ends of the first front rocker arm 4 and the second front rocker arm 5 are respectively connected with one ends of a third pull rod 6 and a fourth pull rod 7, and the other ends of the third pull rod 6 and the fourth pull rod 7 are respectively connected with a left steering control arm 8 and a right steering control arm 9.
In one embodiment, the left and right sides of the steering cam 14 are each provided with a limit projection that defines an angle of rotation of the steering wheel 17 to the left and right.
In one embodiment, the direction rotating arm 15 is provided with a bearing 1501, and the direction cam 13 drives the direction rotating arm 15 to rotate through the bearing 1501.
In one embodiment, the direction rotating arm 15 is provided with a return spring 19, so that when the hands are released after the steering wheel 17 is turned, the return spring 19 can drive the direction rotating arm 15 to automatically return, thereby the steering wheel 17 is automatically returned, the operation is more labor-saving and the ergonomics is good.
In one embodiment, the inner bore of the sleeve 16 is a hex socket and the sliding shaft 18 is also a hex socket that mates with the inner bore of the sleeve 16.
The working principle is as follows:
when the tractor runs in a straight line: the steering gear 10 is connected with a first front rocker arm 4 and a second front rocker arm 5 through a first pull rod 2 and a second pull rod 3 on a rotating shaft arm 1, the first front rocker arm 4 and the second front rocker arm 5 are respectively connected with a left steering arm 8 and a right steering arm 9 of the twin pump through a third pull rod 6 and a fourth pull rod 7, a base plate of the steering gear 10 is connected with an operating rod 13 through a fifth pull rod 12, when the operating rod 13 is moved back and forth, the operating rod 13 drives the steering gear 10 to slide back and forth on a sliding rail 11 through the fifth pull rod 12, at the moment, the tractor is in a straight driving state, a user holds a steering wheel 17 and does not rotate, so that the rotating shaft arm 1 does not rotate, the first front rocker arm 4 and the second front rocker arm 5 do not rotate and the position opposite to the steering gear 10 keeps unchanged, when the steering gear 10 slides back along the sliding rail front 11, the first front rocker arm 4 and the second front rocker arm 5 drive the left steering arm 8 and the right steering arm 9 to swing forwards or backwards in a consistent manner, therefore, the flow rate of the left and right traveling motors controlled by the duplex pump is the same in direction, when the steering gear 10 is positioned on the slide rail 11 and changes, the left control steering arm 8 and the right control steering arm 9 swing forwards or backwards in a consistent manner, the rotation angles are the same, the flow rate and the direction of the left and right traveling motors are the same, the swing angles of the left control steering arm 8 and the right control steering arm 9 are changed within a certain range, and the flow rate of the left and right traveling motors is changed within a certain range correspondingly, so that the stepless adjustment of the advancing and retreating speed of the tractor is realized.
When the tractor turns to: when the steering wheel 17 is rotated, the sleeve 16 rotates by a certain angle to drive the sliding shaft 18 to rotate and enable the steering cam 14 to rotate by a corresponding angle, after the steering cam 14 rotates, the steering shaft arm 1 rotates through the steering gear 10, the first front rocker arm 4 and the second front rocker arm 5 rotate in opposite directions through the first pull rod 2 and the second pull rod 3, the first front rocker arm 4 and the second front rocker arm 5 respectively enable the left control steering arm 8 and the right control steering arm 9 on the dual pump to swing oppositely through the third pull rod 6 and the fourth pull rod 7, so that the flow entering the left motor and the right motor are different in size, the left motor and the right motor have difference, and the tractor can realize rotating speed in forward, backward or in-situ steering; when the hand releases the steering wheel 17, the return spring 19 returns the steering cam 14 to the neutral position via the direction rotating arm 15, and the steering wheel 17 returns to the neutral position.
The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (6)

1. The utility model provides a crawler tractor walking turns to linkage operating mechanism which characterized in that includes:
the steering mechanism comprises a rotating shaft arm (1), wherein two ends of the rotating shaft arm (1) are respectively connected with a left steering control arm (8) and a right steering control arm (9) through a pull rod assembly and a rocker arm assembly;
the steering gear box comprises a steering gear box (10), wherein a rotating shaft arm (1) is arranged on the steering gear box (10), the steering gear box (10) is arranged on a sliding rail (11) in a sliding mode, and a chassis base of the steering gear box (10) is connected with an operating rod (13) through a fifth pull rod (12);
the steering cam (14), the said steering cam (14) links with direction tumbler (15) and can drive the direction tumbler (15) to rotate;
the sleeve (16) is connected with the steering wheel (17), and a sliding shaft (18) is installed in the sleeve (16) in a sliding mode.
2. The crawler tractor walk steering linkage according to claim 1, characterized in that: the pull rod assembly comprises a first pull rod (2), a second pull rod (3), a third pull rod (6) and a fourth pull rod (7), and the rocker arm assembly comprises a first front rocker arm (4) and a second front rocker arm (5); first pull rod (2) and second pull rod (3) are connected respectively to pivot arm (1) both ends, first pull rod (2) and second pull rod (3) link to each other with the one end of rocking arm (5) before first rocking arm (4) and the second respectively, the one end of third pull rod (6) and fourth pull rod (7) is connected respectively to the other end of rocking arm (5) before first rocking arm (4) and the second, the other end of third pull rod (6) and fourth pull rod (7) is connected respectively and is controlled left steering arm (8) and control right steering arm (9).
3. The crawler tractor walk steering linkage according to claim 1, characterized in that: the left side and the right side of the steering cam (14) are both provided with limiting bulges which limit the angle of the steering wheel (17) rotating left and right.
4. The crawler tractor walk steering linkage according to claim 1, characterized in that: the direction tumbler (15) is provided with a bearing (1501), and the direction cam (13) drives the direction tumbler (15) to rotate through the bearing (1501).
5. The crawler tractor walk steering linkage according to claim 1, characterized in that: and a return spring (19) is arranged on the direction rotating arm (15).
6. The crawler tractor walk steering linkage according to claim 1, characterized in that: the inner hole of the sleeve (16) is a hexagonal hole, and the sliding shaft (18) is a hexagonal shaft matched with the inner hole of the sleeve (16).
CN202010775467.9A 2020-08-05 2020-08-05 Walking steering linkage control mechanism of crawler tractor Pending CN111845936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010775467.9A CN111845936A (en) 2020-08-05 2020-08-05 Walking steering linkage control mechanism of crawler tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010775467.9A CN111845936A (en) 2020-08-05 2020-08-05 Walking steering linkage control mechanism of crawler tractor

Publications (1)

Publication Number Publication Date
CN111845936A true CN111845936A (en) 2020-10-30

Family

ID=72970997

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010775467.9A Pending CN111845936A (en) 2020-08-05 2020-08-05 Walking steering linkage control mechanism of crawler tractor

Country Status (1)

Country Link
CN (1) CN111845936A (en)

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