CN203279475U - Steering device, high crop clearance chassis comprising same, and sprayer - Google Patents

Abstract

A steering device and a high clearance chassis with the steering device and a sprayer, the sprayer includes a high clearance chassis and a spraying system installed on the high clearance chassis, the high clearance chassis includes a chassis and a sprayer installed on the chassis The driving device, running device, front axle, rear axle and steering device, the steering device is installed on the front axle and connected with the running device, the steering device includes the front wheel support arm and the front wheel support arm Chassis support mechanism and steering mechanism, the front wheel support arm includes cross tubes and standpipes connected to each other, the chassis support mechanism includes a vertical shaft, the vertical shaft is installed in the stand tube of the front wheel support arm, the cross tube of the front wheel support arm Connected with the front axle beam of the high ground clearance chassis, the steering mechanism is installed on the top of the standpipe of the front wheel support arm and connected with the front wheels of the high ground clearance chassis through the vertical shaft. The steering device of the utility model is suitable for self-propelled agricultural machinery used for field management of high-stalk crops in the later stage of growth.

Description

Steering device and high clearance chassis and sprayer having the same

technical field

The utility model patent relates to a high ground clearance vehicle chassis and its steering device, in particular to a wheelbase adjustable steering device suitable for a high ground clearance chassis, a high ground clearance chassis and a sprayer with the steering device.

Background technique

High-stalk crops such as rapeseed, soybean, barley and corn are planted on a large scale in Northeast my country. According to statistics, the soybean planting area in the three northeastern provinces and Inner Mongolia is more than 70 million mu, and the corn planting area is about 110 million mu. At present, there is no spraying machine suitable for the middle and late growth of soybean and corn, which brings great difficulties to the prevention and control of diseases, insect pests and weeds. great difficulty. Xinjiang is the most important cotton producing area in my country, with an annual cotton planting area of about 17 million mu and an output of more than 1.7 million tons. Cotton is a crop that suffers from the most types of diseases and insect pests among all crops, and there are many times of control during its growth cycle. At the same time, with the large-scale promotion and application of mechanized cotton picking technology and equipment in Xinjiang cotton areas, it is necessary to spray defoliation and ripening agents in a timely and concentrated manner in the late growth period. Therefore, there is an urgent need for plant protection machinery with high ground clearance and high production efficiency, but there is no high ground clearance boom sprayer with low cost that can meet the post-production pesticide application operations of high-stalk crops such as rape and cotton in the prior art.

Utility model content

The technical problem to be solved by the utility model is to provide a steering device of a self-propelled agricultural machine used for field management of high-stalk crops in the later stage of growth, and a high clearance chassis and a sprayer equipped with the steering device.

In order to achieve the above object, the utility model provides a steering device for a high ground clearance chassis, which includes a front wheel support arm and a chassis support mechanism and a steering mechanism installed on the front wheel support arm, the front wheel The support arm includes a cross tube and a standpipe connected to each other, and the chassis support mechanism includes a vertical shaft, and the vertical shaft is installed in the stand tube of the front wheel support arm, and the cross tube of the front wheel support arm is connected with the front The bridge beam is connected, and the steering mechanism is installed on the top of the riser of the front wheel support arm and connected with the front wheels of the high ground clearance chassis through the vertical shaft.

The steering device above, wherein the steering mechanism includes a steering oil cylinder, a chassis support base, a chuck and a steering arm, the chuck is fixedly connected to the chassis support base, and the chuck and the chassis support base pass through The sliding bearing is connected to the top of the standpipe of the front wheel support arm, the two ends of the steering oil cylinder are respectively connected to the chassis support seat and one end of the steering support arm, and the other end of the steering support arm is fixed on the on the riser of the front wheel support arm.

The above-mentioned steering device, wherein it also includes a shock absorbing mechanism, the shock absorbing mechanism includes an air spring, an air spring upper seat and an air spring lower seat, and the upper and lower sides of the air spring are connected with the air spring upper seat and the air spring lower seat respectively. The seat is connected, the air spring lower seat is installed on the top of the vertical shaft, and the air spring upper seat and the air spring lower seat are connected with the chassis support seat through a shock-absorbing guide shaft.

In the above steering device, a buffer is further provided between the air spring lower seat and the chassis support seat.

The above-mentioned steering device further includes a wheelbase adjustment mechanism, the wheelbase adjustment mechanism includes a wheelbase adjustment oil cylinder, and the piston rod end of the wheelbase adjustment oil cylinder is connected to the cross tube of the front wheel support arm, the The piston barrel end of the wheel base adjustment cylinder is fixed on the front axle beam.

In the above steering device, a motor bracket is installed at the end of the vertical shaft, and a wheel side motor for driving the front wheels of the high-clearance chassis is installed on the motor bracket.

In order to better achieve the above object, the utility model also provides a high ground clearance chassis, including an underframe and a driving device installed on the underframe, a running device, a front axle, a rear axle and a steering device, the steering The device is installed on the front axle and connected with the running device, wherein the steering device is the above-mentioned steering device.

The above-mentioned high ground clearance chassis, wherein, the top clearance adjusting fastener and the side clearance adjusting fastener for adjusting the gap between the cross tube of the front wheel support arm and the inner wall of the front axle cross beam are arranged on the front axle beam. Firmware, the top gap adjusting fastener is arranged on the top surface of the front axle beam, and the side clearance adjusting fastener is arranged on the side of the front axle beam.

In order to better achieve the above object, the utility model also provides a sprayer, including a high ground clearance chassis and a spraying system installed on the high ground clearance chassis, wherein the high ground clearance chassis is the above-mentioned high ground clearance chassis.

The beneficial effects of the utility model are:

The utility model is suitable for a complete set of wheelbase adjustable fully hydraulic driven high-gap self-propelled agricultural machinery, and can simultaneously meet the requirements for high ground clearance of the sprayer chassis in the late growth period of crops with different row spacings, and can especially effectively solve the problem of field planting jujube trees, Field management problems in the middle and late stages of field high-stalk crops such as cotton, rapeseed, barley, and soybean can greatly improve production efficiency and reduce labor intensity, thereby greatly improving the economic benefits of agricultural production. The chassis steering device is relatively independent from the chassis ground clearance adjustment, and the wheelbase adjustment function and steering function are relatively independent, which greatly improves the adaptability of the steering device to various crops with different row spacings, and improves the versatility of the steering device . It can not only ensure the reliable steering of the self-propelled agricultural machinery in the field, but also have the function of adjusting the wheelbase of the chassis and the small adjustment function of the ground clearance.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is the structural representation of the sprayer of an embodiment of the utility model;

Fig. 2 is a schematic structural diagram of a high ground clearance chassis according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a steering device according to an embodiment of the present invention;

Fig. 4 is the sectional view of Fig. 3;

Fig. 5 is A-A sectional view of Fig. 3;

FIG. 6 is a top view of FIG. 3 .

Among them, reference signs

1 High ground clearance chassis

11 Chassis

12 drive unit

13 walking device

131 front wheel

14 front axle

141 Front axle beam

142 Top Clearance Adjustment Fastener

143 Side Play Adjustment Fastener

15 rear axle

16 Steering device

161 Front wheel support arm

1611 Horizontal tube

1612 Riser

162 Chassis support mechanism

1621 vertical shaft

1622 Motor Bracket

1623 wheel motor

1624 Locking fasteners at the upper end of the vertical shaft

1625 Vertical shaft upper end lock washer

1626 Vertical shaft lower end lock washer

1627 Locking fasteners at the lower end of the vertical shaft

1628 Upper end sealing ring

1629 Lower end sealing ring

163 Steering mechanism

1631 Steering cylinder

1632 Chassis support seat

1633 Chuck

1634 Steering arm

1635 sliding bearing

16351 inner sliding bearing

16352 Outer sliding bearing

164 shock absorber

1641 Air Spring Upper Seat

1642 Air spring lower seat

1643 air spring

1644 Shock-absorbing guide shaft

1645 Buffer

165 Wheel base adjustment mechanism

1651 Wheel base adjustment cylinder

1652 Fixing piece for piston rod end of wheelbase adjustment cylinder

1653 Wheel base adjustment cylinder fixing pin

2 spray system

21 medicine box

22 boom

3 Cabs

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

Referring to Fig. 1, Fig. 1 is a schematic structural diagram of a sprayer according to an embodiment of the present invention. The sprayer of the present utility model comprises a high ground clearance chassis 1 and a spray system 2 installed on the high ground clearance chassis 1. The spray system 2 mainly includes a medicine box 21 and a spray rod 22. The medicine box 21 is installed on the high ground clearance chassis 1. On the chassis 11, the spray boom 22 is installed on the upper rear part of the high clearance chassis 1, and the upper front part of the high clearance chassis 1 can be installed with the driver's cab 3. The connection methods with the high-ground-clearance chassis 1 and the like are relatively mature prior art, so details will not be described here.

Referring to Fig. 2, Fig. 2 is a schematic structural diagram of a high ground clearance chassis according to an embodiment of the present invention. The high ground clearance chassis 1 of the present utility model comprises an underframe 11 and a driving device 12 installed on the underframe 11, a running device 13, a front axle 14, a rear axle 15 and a steering device 16, and the steering device 16 is installed on The front axle 14 is connected to the running device 13, wherein the steering device 16 is only connected to the front axle beam 141 of the vehicle chassis. The composition, structure, function and connection relationship of other components are relatively mature prior art, so only the steering device 16 will be described in detail below.

Referring to Fig. 3, Fig. 3 is a schematic structural diagram of a steering device according to an embodiment of the present invention. The steering device 16 of the present utility model includes a front wheel support arm 161 and a chassis support mechanism 162 and a steering mechanism 163 installed on the front wheel support arm 161, and the front wheel support arm 161 includes interconnected transverse tubes 1611 and Standpipe 1612, the chassis support mechanism 162 includes a vertical shaft 1621, the vertical shaft 1621 is installed in the vertical pipe 1612 of the front wheel support arm 161, the cross tube 1611 of the front wheel support arm 161 is connected with the high clearance chassis 1 The front axle beam 141 is connected, and the steering mechanism 163 is installed on the top of the standpipe 1612 of the front wheel support arm 161 and connected with the front wheel 131 of the high clearance chassis 1 through the vertical shaft 1621 . A motor bracket 1622 is mounted on the end of the vertical shaft 1621 , and a wheel side motor 1623 for driving the front wheels 131 of the high clearance chassis 1 is mounted on the motor bracket 1622 .

In this embodiment, a shock absorbing mechanism 164 may also be included, and the shock absorbing mechanism 164 includes an air spring 1643, an air spring upper seat 1641 and an air spring lower seat 1642, and the upper and lower sides of the air spring 1643 are connected to the air spring respectively. The upper seat 1641 is connected with the air spring lower seat 1642. At the same time, the upper end of the air spring upper seat 1641 and the two parallel shock-absorbing guide shafts 1644 are connected together by means of taper surfaces. The inflation volume of the air spring 1643 changes or the high clearance chassis 1 vibrates At this time, the air spring lower seat 1642 will slide along the shock absorption guide shaft 1644, thereby realizing the support and shock absorption of the high clearance chassis 1. The chassis support seat 1632 and the shock absorbing mechanism 164 are connected together by the lower tapered surfaces of two parallel shock absorbing guide shafts 1644. The air spring lower seat 1642 is installed on the top of the vertical shaft 1621, and the air spring upper seat 1641 and the air spring lower seat 1642 are connected with the chassis support seat 1632 through a shock absorbing guide shaft 1644 . Wherein, a buffer member 1645 (such as a buffer rubber pier) may also be provided between the air spring lower seat 1642 and the chassis support seat 1632 . The chassis support seat 1632 is connected with two parallel shock absorbing guide shafts 1644 and the air spring upper seat 1641 as a whole, and the weight of the entire high clearance chassis 1 is supported on the air spring lower seat 1642 connected with the vertical shaft 1621 through the vertical shaft 1621, thereby realizing The support, suspension and shock absorption functions of the high ground clearance chassis 1 of the vehicle are realized. When the amount of air in the air spring 1643 changes, the air spring 1643 is supported by the air spring upper seat 1641 to push the air spring lower seat 1642 to slide along the axial direction of the shock-absorbing guide shaft 1644. At the same time, the vertical shaft 1621 and the air spring lower seat 1642 They are connected by taper fit. During the sliding process of the air spring lower seat 1642, the vertical shaft 1621 is simultaneously pushed to extend or retract along the axial direction of the standpipe 1612 of the front wheel support arm 161, thereby realizing the adjustment of the high clearance chassis 1 Function.

Referring to FIG. 4 , FIG. 4 is a cross-sectional view of FIG. 3 . The upper end inner sliding bearing 16351 and the lower end inner sliding bearing 16351 are respectively mounted on the upper end and the lower end of the standpipe 1612 of the front wheel support arm 161, and the vertical shaft 1621 is connected to the standpipe 1612 of the front wheel support arm 161. The inner wall cooperates, and the upper end inner sliding bearing 16351 and the lower end inner sliding bearing 16351 installed inside the standpipe 1612 of the front wheel support arm 161 are used to position the vertical shaft 1621, and the vertical shaft 1621 is positioned between the air spring lower seat 1642 1. The vertical shaft 1621 and the motor bracket 1622 are respectively connected by a taper surface and a flat key. The vertical shaft 1621 is respectively passed through the upper end of the vertical shaft locking washer 1625, the upper end of the vertical shaft locking fastener 1624, and the lower end of the vertical shaft. The tight washer 1626 and the locking fastener 1627 at the lower end of the vertical shaft connect it with the chassis support 1632 and the motor bracket 1622 as a whole. The shock-absorbing guide shaft 1644 is in clearance fit with the sliding bearing 1635 installed on the air spring lower seat 1642, the upper end of the shock-absorbing guide shaft 1644 is connected and fastened with the air spring upper seat 1641, and the shock-absorbing The lower end of the guide shaft 1644 is connected to the chassis support seat 1632, the vertical shaft 1621 is connected to the air spring lower seat 1642 through a conical surface and a flat key, and the shock-absorbing guide shaft 1644 is connected to the air spring lower seat 1642 The central holes on both sides of the air spring are matched and connected, and the air spring lower seat 1642 can slide up and down along the shock-absorbing guide shaft 1644 to realize the shock-absorbing function of the high-ground-clearance chassis 1 of the vehicle. The upper sealing ring 1628 and the lower sealing ring 1629 seal the lubricating grease required for the support and damping device of the high clearance chassis 1, and prevent external dust from entering. The upper sealing ring 1628 and the lower sealing ring The 1629 is fixed with the upper sealing ring locking piece and the lower sealing ring locking piece respectively.

In this embodiment, the steering mechanism 163 includes a steering cylinder 1631, a chassis support base 1632, a chuck 1633 and a steering arm 1634, the chuck 1633 is fixedly connected to the chassis support base 1632, and the chuck 1633 is connected to the chassis support base 1632. The chassis support base 1632 is connected to the top of the standpipe 1612 of the front wheel support arm 161 through a sliding bearing 1635, and the two ends of the steering cylinder 1631 are respectively connected to the chassis support base 1632 and one end of the steering support arm 1634. The other end of the steering arm 1634 is fixed on the standpipe 1612 of the front wheel arm 161 . The upper part of the front wheel support arm 161 is connected with the chassis support seat 1632 and the chuck 1633, and the piston rod end of the steering cylinder 1631 is connected with the chassis support seat 1632 through a tapered surface. , the cylinder end of the steering cylinder 1631 is connected to the steering arm 1634 . The chassis support seat 1632 and the chuck 1633 are integrally connected by bolts, the upper part of the front wheel support arm 161 is connected with the chassis support seat 1632 and the chuck 1633, and the front wheel support arm The upper end of 161 can and can only rotate relative to chassis support seat 1632 . In this embodiment, two semi-ring-shaped chucks 1633 are respectively connected to the chassis support base 1632 to clamp the upper part of the front wheel support arm 161, and the inner sliding bearing 16351 and the outer sliding bearing 16352 of the upper end are coaxially assembled on the On the chassis support seat 1632. The vertical shaft 1621 and the chassis support seat 1632 can rotate around the upper part of the front wheel support arm 161 under the support and guidance of the inner sliding bearing 16351 and the outer sliding bearing 16352 at the upper end, so as to support and support the weight of the high clearance chassis 1. turn. The chassis supporting seat 1632 and the chuck 1633 can rotate relative to the upper end of the front wheel support arm 161, and the end of the piston rod of the steering cylinder 1631 is connected with the tapered surface between the chassis supporting seat 1632, so that The cylinder end of the steering oil cylinder 1631 and the steering arm 1634 are also connected through a taper fit. When the steering cylinder 1631 is extended or shortened under the action of hydraulic oil, the chassis support seat 1632 and the chuck 1633 are pushed to rotate, thereby driving the air spring lower seat 1642, the air spring upper seat 1641 and the The shock absorber guide shaft 1644 rotates together, thereby realizing the steering function of the high clearance chassis 1 of the vehicle. Since the left and right side steering mechanisms 163 can independently realize the steering of the left and right front wheels 131 of the high ground clearance chassis 1, there is no mechanical structure connection between the two, so the action of the wheelbase adjustment mechanism 165 has a great influence on the function of the steering mechanism 163. No effect. Thus, the relative independence of steering and ground clearance adjustment of the high ground clearance chassis 1 is realized.

Referring to Fig. 5 and Fig. 6, Fig. 5 is a sectional view along AA of Fig. 3, and Fig. 6 is a top view of Fig. 3 . The front axle beam 141 is provided with a top gap adjusting fastener 142 and a side clearance adjusting fastener 143 for adjusting the gap between the cross tube 1611 of the front wheel support arm 161 and the inner wall of the front axle beam 141 , the top clearance adjusting fastener 142 is arranged on the top surface of the front axle beam 141 , and the side clearance adjusting fastener 143 is arranged on the side of the front axle beam 141 . The top clearance adjusting fastener 142 and the side clearance adjusting fastener 143 are mounted on the welded pipe of the front axle cross member 141 by the top screw, and tighten the front wheel support arm 161 .

In this embodiment, a wheelbase adjustment mechanism 165 may also be included, and the wheelbase adjustment mechanism 165 includes a wheelbase adjustment oil cylinder 1651, and the piston rod end of the wheelbase adjustment oil cylinder 1651 is connected to the cross tube of the front wheel support arm 161. 1611 connection, the piston barrel end of the wheel base adjustment oil cylinder 1651 is fixed on the front axle beam 141 . The cross tube 1611 of the front wheel support arm 161 is inserted into the welded tube of the front axle beam 141, and the top clearance adjustment fastener 142 and the side clearance adjustment fastener 143 connect the front wheel support arm 161 to the welded pipe. The front axle beam 141 welded pipe is fastened as one. The piston barrel end of the wheelbase adjustment oil cylinder 1651 is connected to the welded pipe of the front axle beam 141 through the wheelbase adjustment oil cylinder fixing pin 1653, and the piston rod end of the wheelbase adjustment oil cylinder 1651 is connected to the front wheel support. Arm 161 is connected with track adjustment oil cylinder piston rod end fixture 1652. The piston barrel end of the wheelbase adjustment oil cylinder 1651 is connected with the fixed ear of the oil cylinder welded to the chassis beam, and the piston rod end of the wheelbase adjustment oil cylinder 1651 is connected with the root of the cross pipe 1611 of the front wheel support arm 161. When the high-pressure hydraulic oil flows into the When the wheelbase adjustment cylinder 1651 pushes the piston rod to extend or retract, the cross pipe 1611 of the front wheel support arm 161 together with the whole steering device 16 will protrude or retract from the cross pipe 1611 welded to the chassis beam, thereby achieving high ground clearance Wheelbase adjustment function for chassis 1. Wherein, the action of the wheelbase adjustment oil cylinder 1651 can be realized by controlling the electromagnetic reversing valve through the switch placed inside the driver's cab 3 .

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1. A steering device for a high ground clearance chassis, characterized in that it comprises a front wheel support arm and a chassis support mechanism and a steering mechanism installed on the front wheel support arm, and the front wheel support arm includes interconnected A horizontal tube and a vertical tube, the chassis support mechanism includes a vertical shaft, the vertical shaft is installed in the vertical tube of the front wheel support arm, the horizontal tube of the front wheel support arm is connected with the front axle beam of the high ground clearance chassis, the The steering mechanism is installed on the top of the riser of the front wheel support arm and connected with the front wheels of the high ground clearance chassis through the vertical shaft. 2. The steering device according to claim 1, wherein the steering mechanism comprises a steering oil cylinder, a chassis support base, a chuck and a steering arm, the chuck is fixedly connected with the chassis support base, and the The chuck and the chassis support base are connected to the top of the standpipe of the front wheel support arm through a sliding bearing, and the two ends of the steering oil cylinder are respectively connected to the chassis support base and one end of the steering support arm. The other end of the steering arm is fixed on the standpipe of the front wheel arm. 3. Steering device as claimed in claim 2, is characterized in that, also comprises shock-absorbing mechanism, and described shock-absorbing mechanism comprises air spring, air spring upper seat and air spring lower seat, and the top and bottom of described air spring are respectively connected with The upper seat of the air spring is connected with the lower seat of the air spring, the lower seat of the air spring is installed on the top of the vertical shaft, and the upper seat of the air spring and the lower seat of the air spring are connected with the chassis support seat through a shock absorbing guide shaft. 4 . The steering device according to claim 3 , characterized in that, a buffer is further provided between the air spring lower seat and the chassis support seat. 5. The steering device according to claim 1, 2, 3 or 4, further comprising a wheelbase adjustment mechanism, the wheelbase adjustment mechanism comprising a wheelbase adjustment oil cylinder, the piston rod of the wheelbase adjustment oil cylinder The end is connected with the cross tube of the front wheel support arm, and the piston barrel end of the wheel base adjustment oil cylinder is fixed on the front axle beam. 6. Steering device as claimed in claim 1, 2, 3 or 4, it is characterized in that, the end of described vertical shaft is equipped with motor support, and the front wheel that is used to drive described high ground clearance chassis is installed on the described motor support wheel motor. 7 . The steering device according to claim 5 , wherein a motor bracket is installed at the end of the vertical shaft, and a wheel side motor for driving the front wheels of the high clearance chassis is installed on the motor bracket. 8 . 8. A high ground clearance chassis, comprising an underframe and a driving device installed on the underframe, a running gear, a front axle, a rear axle and a steering device, and the steering device is installed on the front axle and is connected to the The running device connection is characterized in that the steering device is the steering device described in any one of claims 1-7. 9. The high ground clearance chassis according to claim 8, wherein the front axle beam is provided with a top gap for adjusting the gap between the cross tube of the front wheel support arm and the inner wall of the front axle beam An adjusting fastener and a side gap adjusting fastener, the top gap adjusting fastener is arranged on the top surface of the front axle beam, and the side clearance adjusting fastener is arranged on the side of the front axle beam. 10. A sprayer, comprising a high ground clearance chassis and a spraying system installed on the high ground clearance chassis, characterized in that the high ground clearance chassis is the high ground clearance chassis described in claim 8 or 9 above.

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