CN210492301U

CN210492301U - Self-propelled multipurpose sprayer

Info

Publication number: CN210492301U
Application number: CN201921229392.3U
Authority: CN
Inventors: 马维华; 马伟强; 马伟萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-12
Anticipated expiration: 2029-08-01

Abstract

Provides a self-propelled multipurpose sprayer, which comprises a frame, a gasoline engine, a gear pump, a gearbox and a liquid medicine barrel; the front end of the frame is detachably and replaceably provided with spraying machine heads I, II and III; the spraying machine head I comprises an axial flow fan and a duckbilled nozzle cover; the spraying machine head II comprises a horizontal spraying pipe and an inclined spraying pipe; the sprayer head III comprises vertical spray pipes; a winch, a flexible pipe and a single atomizing spray gun are arranged beside the frame; the rear part of the frame is provided with double handles, and the bottom of the frame is provided with a front driving wheel pair and a 360-degree rotating tail wheel; the front driving wheel pair turns through a differential mechanism, changes speed through a gearbox, and takes power from one belt transmission power output end of the gasoline engine, and the other power output end of the gasoline engine is connected with a gear pump and provides power input for the gear pump. The utility model has multiple purposes and ideal universality; is economical, practical and efficient; the steering is simple, the operation is convenient and fast, and the whole process is visualized; is flexible, convenient, simple and reliable, and leads the pesticide spraying operation to become more labor-saving, time-saving, labor-saving and efficient.

Description

Self-propelled multipurpose sprayer

Technical Field

The utility model belongs to the technical field of special liquid spraying equipment of agricultural, concretely relates to self-propelled multi-purpose sprayer.

Background

The existing self-propelled automatic spraying agricultural machine takes an orchard sprayer with adjustable spraying range with an authorization notice number of CN 207369955U; and "a self-propelled air-assisted sprayer" with an authorized notice number CN206821793U as an example; although the two sprayers solve the technical problem of large-area automatic spraying of fruit trees, the rear-mounted sprayer can not be timely found and treated by a driver in a spraying state when working, particularly if a spray head leaks and is blocked; moreover, the sprayer relies on the axial flow fan to combine the baffle to cut off, realizes large tracts of land diffusion formula spraying, receives shower nozzle spraying radiation direction, radiation area unadjustable, and the shower nozzle sprays the restriction that the mode is unadjustable, only is applicable to the high-efficient of partial plant and doses. For spraying and dosing of greenhouse fruit trees such as kiwi fruits, sparse apple shrub plants and low hedgerow type grape trellis plants, flexible and accurate adaptive directional spraying and dosing adjustment cannot be realized; for example, for arbor and shrub trees with large row spacing and plant spacing, such as apples and peaches: because the spray head is arranged at the rear part and the axial flow air supply of the fan is added, when a driver sprays a shrub, the driver needs to back the car, turn and advance the car again to ensure that the spray head can be over against the plant again to finish the pesticide application, and in the operation process, the driver needs to frequently twist the body to ensure that the axial flow fan can be over against the front of the fruit tree to finish the pesticide spraying, and the spraying height is limited, so that the high utilization of the pesticide cannot be ensured; for kiwi fruit spraying administration, transverse large-span one-time spraying administration cannot be realized; for the grape plants planted in a fence-type climbing manner, the directional accurate spraying and drug administration of the double-row low grape trellis cannot be realized. Therefore, the rear-mounted agricultural machine with the non-replaceable spraying mode is inconvenient to operate, poor in practicability and low in spraying utilization rate; especially, the multifunctional and universal spraying of the machine tool is not ideal due to the limitation of the arrangement of the spray heads. Accordingly, there is a large waste of sprayed pesticide. In view of this, the following technical solutions are proposed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the self-propelled multipurpose sprayer is provided, and solves the problems that the rear-mounted mechanical spraying equipment is not ideal in visual operation, needs to be backed repeatedly and turned, and is inconvenient in visual spraying operation; meanwhile, the spraying mode of the sprayer head cannot be adjusted and changed adaptively according to different plant forms including apples (large shrubs), kiwifruits (tall and tall elevated canopy plants) and grapes (low and short multi-row fence type climbing planted canopy plants), so that the utilization rate of sprayed pesticide is low, and the multifunctional universality of the sprayer is not ideal.

The utility model adopts the technical proposal that: the self-propelled multipurpose sprayer is provided with a rack, wherein a gasoline engine, a gear pump, a gearbox and a liquid medicine barrel are fixedly supported and installed on a rack body; the front end of the frame body is fixedly supported and provided with a detachable and replaceable spraying machine head; the sprayer head comprises a sprayer head I (shown in figures 1-6), a sprayer head II (shown in figure 7) and a sprayer head III (shown in figures 10 and 11); the spraying machine head I comprises a mounting frame I, an axial flow fan and a duckbilled nozzle cover; the sprayer head II comprises a mounting frame II, a horizontal spray pipe group with adjustable horizontal length is arranged at the top end of the mounting frame II, and two ends of the horizontal spray pipe group are communicated with inclined spray pipes which spray obliquely downwards; the spraying machine head III comprises a mounting rack III and vertical spray pipes which vertically or obliquely spray towards the left and right symmetrical outer sides of the mounting rack III; a winch is mounted on the side of the rack body in a suspension mode, the winch winds and accommodates a flexible pipe, and a single atomizing spray gun made of a traditional spray gun or a hard rod-shaped piece is mounted at the end of the flexible pipe; the rear part of the rack body is provided with double handles which are symmetrical left and right; the front side of the bottom of the rack body is provided with a front driving wheel pair which is bilaterally symmetrical; a tail wheel rotating 360 degrees in the vertical direction is arranged on the rear side of the bottom of the rack of the tricycle type wheel set formed by the front driving wheel pair; wherein the front driving wheel pair is steered through a differential mechanism; the power input end of the differential is connected with the power output end of the gearbox through a universal joint and a coupling, and the power input end of the gearbox takes power from one belt transmission power output end of the gasoline engine through belt transmission; the other belt transmission power output end of the gasoline engine is connected with the power input end of the gear pump to provide power for the gear pump.

(as shown in fig. 1 and 2) the gasoline engine 2 is powered by the axial flow fan 12, the front driving wheel pair 8 and the gear pump 3 in a non-plug mode: further: the gasoline engine comprises a first gasoline engine and a second gasoline engine; the second gasoline engine provides power for the axial flow fan; (as shown in fig. 6), the first gasoline engine drives the main transmission shaft to rotate through belt transmission, and a first driven belt wheel and a second driven belt wheel which output power in two ways are coaxially and fixedly installed on the main transmission shaft; the first driven belt wheel and the second driven belt wheel respectively provide power for the front driving wheel pair and the gear pump through corresponding transmission mechanisms.

(see fig. 4) when the sprayer head i 601 is used for spraying sparse large plants such as apples, in order to support the duckbill-type sprayer cover 13, the sprayer can spray obliquely upwards towards the right front, and can also spray obliquely towards the left or right side, further: the mounting rack I comprises a right-angled triangle support frame; the right-angled triangular support frame supports the axial flow fan and the duckbilled spray head cover to spray obliquely upwards; the axial flow fan is positioned at the rear side of the duckbilled spray head cover and is coaxially and fixedly connected with the duckbilled spray head cover into a whole; a steering mechanism supporting the axial flow fan and the duckbill type nozzle cover to rotate at 90 degrees simultaneously is arranged between the axial flow fan and the mounting frame I; the fan impeller of the axial flow fan is provided with an axial flow fan transmission mechanism for driving a fan impeller rotating shaft to rotate; the axial flow fan is also provided with a positioning support locking mechanism for fixing the orientation of the axial flow fan.

(refer to fig. 4 again) when the sprayer head i 601 is used for spraying sparse large plants such as apples, in order to realize the switching of the front, left and right spraying directions of the duckbilled sprayer cover 13 through a simple transmission structure, preferably: the steering mechanism comprises a hinge shaft which is obliquely arranged, an intermediate gear is arranged at the shaft end of the hinge shaft, and a driven bevel gear for steering adjustment is arranged in a manner of being meshed with the intermediate gear; the axial flow fan transmission mechanism comprises a belt transmission mechanism taking power from the gasoline engine and a tooth transmission mechanism connected with the belt transmission mechanism, and the tooth transmission mechanism consists of a driving bevel gear, an intermediate bevel gear and a driven bevel gear which are in orthogonal meshing transmission; wherein, the driven bevel gear drives the rotating shaft of the fan impeller of the axial flow fan to rotate.

(as in fig. 3) when the spraying machine head I601 is used for spraying sparse large plants such as apples, the duckbilled nozzle cover 13 can be adjusted by rotating around the rotating shaft of the impeller of the axial flow fan by 360 degrees as the center according to the growth of the plant supporting rods, and further: the duckbilled nozzle cover and the axial flow fan shell are coaxially and fixedly connected into a whole through a flange type connecting structure.

(as shown in fig. 3) when the sprayer head I is used for spraying sparse large plants such as apples, in order to realize the adjustment of the spraying width of the duckbilled sprayer cover, the method further comprises the following steps: opening and closing separation blades capable of adjusting the width of a spraying opening of the cover body are symmetrically arranged in the duckbilled nozzle cover body in the left and right directions; the opening and closing blocking piece is hinged with the cover body.

(see fig. 7 and 8) when the spraying machine head II 602 is used for spraying kiwifruit trellis plants, in order to realize the adjustment of the working width of the horizontal spraying pipe group 15 by a simple structure, it is preferable that: the horizontal spraying pipe group of the spraying machine head II is provided with a horizontal width adjusting mechanism; the horizontal width adjusting mechanism comprises a middle fixed spray pipe, a first horizontal spray pipe and a second horizontal spray pipe, wherein the first horizontal spray pipe and the second horizontal spray pipe are arranged in front of and behind the middle fixed spray pipe; the first horizontal spray pipe and the second horizontal spray pipe respectively realize the width adjustment of the drawing transverse type horizontal spraying operation through guide rod assemblies with the same structure; the guide rod assembly consists of a sliding sleeve set fixedly connected with the mounting frame II, a sliding rod sliding and moving in the sliding sleeve set, and an 8-shaped connecting sleeve fixedly connected with the sliding rod in a welding and sleeving manner; wherein the top sleeve body of the 8-shaped connecting sleeve is sleeved and welded with the first or the second horizontal spray pipe.

(as shown in fig. 9) for the convenience of spraying the kiwi fruit shed plant with the spraying machine head II 602, the spraying machine head II 602 can shuttle from the narrow plant space, namely, the spraying machine head II 602 rotates 90 degrees, so as to enter the adjacent row of plants for spraying, and further: the mounting rack II is provided with a mounting bracket with a T-shaped support at the top end and an L-shaped bracket which is rotatably supported and mounted by the top end of the mounting bracket with the T-shaped support and is convenient for integrally rotating the horizontal spray pipe group; a bracket rotating shaft is arranged at the bottom of the L-shaped bracket; the top of the L-shaped bracket is fixedly connected with the outer side wall of the bottom end of the sliding sleeve group in a welding way; the horizontal plate of the L-shaped bracket is provided with a tightening component for locking the rotation direction of the L-shaped bracket in a tightening way.

(see fig. 12) to achieve that the sprayer head iii 603 is used for spraying fence-type climbing-planted grape plants, the vertical row of nozzles 18 can adaptively adjust the spraying height for the height of the grape plants, and further: the sprayer head III comprises a mounting rack III, and positioning arc plates are mounted on the left and right symmetrical outer sides of the mounting rack III; the arc-shaped plate body is provided with a plurality of positioning holes, and the bottom of the vertical spraying pipe is positioned and locked with the positioning holes at different positions through the locking assembly, so that the vertical height and the vertical swing angle of the vertical spraying pipe are adjusted.

The utility model has the advantages compared with the prior art:

1. the spraying machine head I601 of the utility model is used for spraying and dosing large shrub plants such as apple trees and the like; when the fertilizer is sprayed upwards in an inclined way towards the right front, the fertilizer can also be used for spraying and feeding the kiwi fruit trellis plants with narrow width; the spraying machine head II 602 is used for spraying and dosing high-frame shed plants such as kiwi fruits and the like; the sprayer head III 603 is used for spraying and dosing the grape dwarf vine plants; the single atomizing spray gun arranged at the end part of the flexible pipe can be used for accurately spraying and feeding single-side small-area plants; by replacing different machine heads, the multifunctional precise continuous dosing operation of one machine is realized, and the maximization of the pesticide spraying utilization rate is realized; the method is economical, energy-saving, and more accurate, efficient and practical in directional spraying administration;

2. compared with the rear-mounted spraying operation in the background technology, the spraying state of the front-mounted machine head, especially the leakage and blockage of the spray head, can be found and processed by a driver in time; the front-mounted spraying operation is realized, the whole spraying process is visual, accurate directional administration is facilitated, and the maximization of pesticide spraying utilization is realized;

3. the spraying machine head I601 of the utility model can adjust the spraying radiation direction and the spraying width, can feed both towards the right front and towards the side; the spraying machine head II 602 can adjust the horizontal spraying width according to the line spacing, and the width adjustment is completed by drawing the parallel double-row horizontal spraying pipes, so that the spraying machine is simple and convenient; moreover, the spraying height of the spraying machine head III 603 can be adjusted; the precise directional efficient spraying operation of the double-row low plants can be realized;

4. the four spraying modes of the utility model can be replaced or adjusted according to the actual needs; is convenient and fast; the power system of the sprayer does not need to be plugged, and the transmission is simple, reliable, stable and efficient; the first gasoline engine provides power for the front driving wheel pair 8 and the gear pump 3 without being plugged; the second gasoline engine 202 provides power for the axial flow fan 12 without plugging electricity; a power line is not used, so that the device is suitable for long-distance field pesticide spraying operation;

5. the utility model adopts the rear double-hand handle similar to the operation mode of the hand tractor and an auxiliary power system to realize the steering and advancing operation of the machine tool; the front wheels are driven to walk by combining with the gasoline engine, and steering is completed by means of a differential; compared with a rear locomotive in the background technology, the operation of backing or steering can be completed only by twisting the head and turning the body, so that the rear locomotive is lighter and more flexible; the whole process is visually operated, and the operation is flexible and convenient; under the combined action of the front part of the sprayer head, the direction of the spraying airflow is always within the sight line range; the driver and the locomotive advance forward in the same direction and always move forward, the body does not need to be twisted, and the device is convenient, flexible, efficient and better in practical operability;

6. compared with the prior art, the duckbilled nozzle of the sprayer head I601 of the utility model can realize that two sides of the blade are blown once and receive the medicine simultaneously under the combined action of the duckbilled nozzle and the axial flow fan; the axial flow fan adopts duckbilled type cluster air supply, the range is farther, the penetrating power is stronger, the pesticide receiving on the leaf surface is more uniform, and the pesticide spraying is more efficient;

7. the spraying machine of the utility model has multiple purposes, ideal universality, economy, practicality and high efficiency; the operation is convenient, the steering is simple, the visual operation is simple and reliable.

Drawings

FIG. 1 is a schematic view of the rear side three-dimensional structure of the sprayer head I of the present invention;

FIG. 2 is a schematic view of the front side of the sprayer head I of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the spraying machine head I after rotation;

FIG. 4 is a schematic perspective view of a steering mechanism and a transmission mechanism of a spraying machine head I of the present invention;

FIG. 5 is a front view schematic illustration of the powertrain, driveline, and mounting of FIGS. 1 and 2;

FIG. 6 is a schematic illustration of the transmission principle of the first gasoline engine shown in FIG. 1;

FIG. 7 is a schematic diagram of a rear view structure of the spraying machine head II 602 according to the present invention;

FIG. 8 is a schematic structural diagram of a horizontal width adjustment mechanism at part A of the spraying machine head II 602 in FIG. 7;

FIG. 9 is a side view of the horizontal width adjustment mechanism of the sprayer head II 602 of FIG. 7 after being rotated 90 degrees;

fig. 10 is a schematic diagram of a front side front view structure of the sprayer head iii 603;

FIG. 11 is a schematic diagram of the side view configuration of FIG. 10;

FIG. 12 is a schematic diagram of the adaptive adjustment of the spray height of the vertical array of nozzles of the spray head III of FIG. 10.

Detailed Description

Specific embodiments of the present invention will be described below with reference to fig. 1-12. It is to be understood that the following description of the embodiments is merely exemplary and not intended to limit the invention in any way.

The following examples are provided to facilitate a better understanding of the present invention, but are not intended to limit the present invention. The following examples are only a part of the present invention, and not all of them. The components or materials used in the following examples are commercially available unless otherwise specified.

In the present invention, unless otherwise specifically stated or limited, unless otherwise specified or limited, the terms "upper, lower, left, right, inner, outer, vertical, horizontal" and the like are included in the terms in which the directional terms are used merely to represent the orientation of the terms in the normal use state, or to facilitate the description of the present invention and simplify the description, or to be a colloquial term understood by those skilled in the art, and should not be construed as limiting the terms.

In addition, in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," "disposed," and "provided" are to be construed broadly and may include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. For another example, it may be integrally mechanically connected; may be indirectly connected through other intermediate members. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The self-propelled multipurpose sprayer comprises a rack 1, wherein a gasoline engine 2, a gear pump 3, a gearbox 4 and a pesticide bucket 5 are fixedly supported and installed on a rack body of the rack 1. About the utility model belongs to the pumping system of prior art, it is required to explain: a water inlet pipe of the gear pump 3 is connected with a water outlet end of the liquid medicine barrel 5; the water outlet pipe of the gear pump 3 is connected with the spraying machine heads 6 in different forms through a quick-change adapter. In addition, in order to guarantee the quality of dosing, gear pump 3 is installed the filter from the inlet tube that 5 pump suction pesticides of liquid medicine bucket on.

About the utility model belongs to prior art's driving system, it is required to explain: the gasoline engine, in particular to a spark ignition engine without electric insertion, preferably a gasoline engine or a diesel engine. The advantages of using a spark-ignition engine are: can satisfy the utility model discloses in the field, the mechanical automation high efficiency that need not the distribution for a long time sprays the operation demand.

About the utility model discloses an improvement point lies in: at first, for realizing the utility model discloses leading visual spraying operation to solve current pesticide and spray mobile equipment, can't carry out the technical problem that adaptability was adjusted and was changed to spraying the form according to the difference of plant form: frame 1 support body front end fixed stay simple to operate whole visual operation, can dismantle and the spraying aircraft nose 6 of changing. Simultaneously, for planting the form according to the different plants such as apple (large-scale sparse shrub), kiwi fruit (overhead canopy frame class plant), grape (the biserial plant of low hedge formula climbing planting), change corresponding spraying aircraft nose that can realize accurate directional dosing at any time, realize a tractor serves several purposes, the maximize utilizes the pesticide, and is not extravagant: the sprayer head 6 comprises a sprayer head I601 (shown in figures 1-6), a sprayer head II 602 (shown in figure 7) and a sprayer head III 603 (shown in figures 10 and 11).

Specifically, in order to meet the requirements of automatic, efficient and penetrating administration of different plant types, such as large shrub plants like apples, plums, peach trees and the like: (as shown in fig. 1-6) the sprayer head I601 comprises a mounting frame I11, an axial flow fan 12 and a duckbill type sprayer cover 13. The mounting frame I11 (see figure 4) is used for detachably and obliquely upwards fixedly supporting the whole sprayer head I and is mounted at the front end of the frame body of the frame 1. The axial flow fan 12 is used for supplying air towards the front end of the rack 1 in an axial flow mode (as shown in fig. 2), on one hand, pesticide is prevented from being scattered on a human body, on the other hand, positive pressure air supply is provided towards the front side of the duckbilled nozzle cover 13, and in cooperation with the bundling closing-up effect of the duckbilled nozzle cover 13, the spraying pesticide is convenient to have a farther spraying range, and the penetrating power is stronger. Specifically, the mounting frame I11 is preferably made of angle steel through welding; and the mounting frame I11 should be understood that the mounting frame I11 is preferably fixed at the front end of the frame body of the frame 1 by adopting a bolt fastening assembly in a fastening installation mode so as to be convenient to disassemble, assemble and replace.

Furthermore, in order to satisfy the demand of dosing of high-frame canopy type plants such as kiwi fruit: (as shown in fig. 7), the second sprayer head 602 comprises a mounting frame ii 14, a horizontal spray pipe group 15 with adjustable horizontal length is arranged at the top end of the mounting frame ii 14, and two ends of the horizontal spray pipe group 15 are connected with inclined spray pipes 16 which spray obliquely downwards. Wherein the length-adjustable horizontal spray pipe group 15 and the inclined spray pipe 16 are formed

The type sprays the structure to install on II 14 tops of mounting bracket, be used for to high-frame canopy frame class plants such as kiwi fruit go on the penetrability of crossing formula plane and controlling the inclined plane and spray with dosing. It should be understood that all spray heads on the spray pipe are referred to herein as atomizing spray heads. For this example: the spray nozzles are uniformly distributed on the spray pipe, and each spray nozzle is an atomization spray nozzle with an independent switch. Select for use the atomizer who takes the switch, aim at: when the length-adjustable horizontal spray pipe group 15 is formed by using two horizontal spray pipes such as in the present embodiment, the horizontal spray width can be increased and adjusted by respectively drawing the two horizontal spray pipes towards the left and right ends; in a similar way, the minimum shortest adjustment of the horizontal spraying width is realized by aligning the two ends of the two spray pipes. The inclined spray pipe 16 is used for spraying and dosing the rattan leaves growing from two sides of the high shed frame in a precise and directional mode. It should be understood that the inclined nozzle 16, horizontal sprayThe pipe group 15 can be respectively connected with the water outlet pipe of the gear pump 3 through a multi-way joint and different hoses connected with the multi-way joint so as to pump medicine from the liquid medicine barrel 5. In addition, the structure of the mounting rack II 14 of the spraying machine head II 602 is a square frame structure which is manufactured into a vertical elevated frame by welding angle steel preferentially, the bottom of the square frame is a bolt fastening assembly preferentially, and the whole spraying machine head II 602 is detachably and fixedly mounted at the front end of the frame body of the frame 1 by adopting a detachable fastening mounting mode.

Furthermore, to meet the requirement of efficient administration spraying of low vine plants such as grapes: (see fig. 10 and 11) the sprayer head III 603 comprises a mounting frame III 17 and vertical spray pipes 18 which spray vertically or obliquely towards the left-right symmetrical outer side of the mounting frame III 17. The mounting rack III 17 is used for detachably and fixedly mounting the whole sprayer head III 603 at the front end of the rack 1; the bottom of the vertical spray pipe 18 is used for fixedly connecting the mounting frame III 17, and specifically, the mounting frame III can be fixedly positioned and mounted in a clamping mode through an omega-shaped clamp and a fastening assembly. In addition, the two vertical spray pipes 18 are arranged symmetrically left and right and are respectively fixedly arranged at the left and right symmetrical sides of the front end of the frame 1 (as shown in fig. 10); the vertical spray pipes 18 are uniformly distributed and provided with a plurality of atomizing spray heads along the vertical length direction of the pipe body; the atomizing spray head with an independent switch is turned on by screwing, and the medicine is accurately, directionally and efficiently administered to the low fence type climbing planted grape plants.

Furthermore, in order to meet the accurate administration requirement of short plants such as pepper seedlings or plants with extremely high height, or the local directional administration spraying requirement of narrow border fields, or the regional plants that the locomotive can not run to reach when spraying the administration operation: a winch 19 is mounted on the side of the frame body of the frame 1 in a hanging mode, the winch 19 winds and accommodates a flexible pipe 20, and a single atomizing spray gun 21 made of a traditional spray gun or a hard rod-shaped piece is mounted at the end portion of the flexible pipe 20. The atomizing spray head 21 made of the traditional hard rod-shaped part is used for carrying out accurate directional spraying and drug delivery on plants needing accurate, small-area and narrow field borders.

Therefore, the four spraying modes can be selected by self in a targeted manner according to different planting and growing characteristics of plants by replacing different machine heads. Compared with the agricultural spraying machine tool with a single spraying operation mode in the prior art, the multifunctional universal spraying machine tool realizes the automatic spraying operation of field machinery with multiple functions and various and replaceable functions.

On the basis, in order to solve the problem that the driver of the motor vehicle in the background technology must frequently turn around and twist the body to complete the operations of backing and turning; the turning driving operation of the two technical schemes in the background technology is very inconvenient; simultaneously the visual operation of spouting of driver also can't monitor at any time and look over, inconvenient whole inspection at any time spouts the technical problem of medicine operating condition: the rear part of the frame body of the frame 1 is provided with two handles 7 which are symmetrical left and right. The double-handle 7 is used for steering in cooperation with the tail wheel 9. And the front side of the bottom of the frame body of the frame 1 is provided with a front driving wheel pair 8 which is bilaterally symmetrical. The power system for the gasoline engine 2 to drive the front driving wheel pair 8 to walk comprises a first gasoline engine 201; the power output end of the first gasoline engine 201 drives a main transmission shaft 2011 to rotate (as shown in fig. 1 and fig. 6) through belt transmission, and the main transmission shaft 2011 is rotatably supported at the top end of the frame body of the rack 1 through a bearing; a first driven belt wheel 2012 and a second driven belt wheel 2013 which are used for outputting power in two paths are coaxially and fixedly arranged on the main transmission shaft 2011; the first driven pulley 2012 and the second driven pulley 2013 respectively power the front pair of drive wheels 8 and the gear pump 3 respectively through respective transmission mechanisms. Further: (as shown in fig. 1 and 2) the gasoline engine 2 is powered by the axial flow fan 12, the front driving wheel pair 8 and the gear pump 3 in a non-plug mode: the gasoline engine 2 comprises a first gasoline engine 201 and a second gasoline engine 202; the second gasoline engine 202 provides power for the axial flow fan 12, and the specific transmission manner is described later. (as shown in fig. 6), the first gasoline engine 201 drives a main transmission shaft 2011 to rotate through belt transmission, and a first driven pulley 2012 and a second driven pulley 2013 which are used for outputting power in two paths are coaxially and fixedly installed on the main transmission shaft 2011; the first driven pulley 2012 and the second driven pulley 2013 respectively power the front pair of drive wheels 8 and the gear pump 3 respectively through respective transmission mechanisms. First driven pulley 2012 passes through the belt and connects gear pump 3's power input shaft band pulley and drives gear pump 3 power input shaft and rotate, and gear pump 3 passes through the suction negative pressure that piston reciprocating motion formed in the cavity, draws liquid medicine from liquid medicine bucket 5 to supply the liquid medicine constantly towards spraying aircraft nose 6. The second driven belt wheel 2013 is connected with a power input shaft belt wheel of the gearbox 4 through a belt, and the power input shaft belt wheel of the gearbox 4 drives a power input shaft of the gearbox to rotate. A tricycle type wheel set formed by the tricycle and the front driving wheel pair 8 is arranged at the rear side of the bottom of the frame 1 and is provided with a tail wheel 9 rotating in a vertical direction by 360 degrees; wherein the front driving wheel pair 8 is steered through a differential 10; the power input end of the differential mechanism 10 is connected with the power output end of the gearbox 4 through a universal joint and a coupling, and the power input end of the gearbox 4 is driven by a belt to take power from one belt-driven power output end of the gasoline engine 2; the other belt transmission power output end of the gasoline engine 2 is connected with the power input end of the gear pump 3 to provide power for the gear pump 3.

Moreover, to realize the variable speed advance of the locomotive: the power take-off shaft of the gearbox 4 powers a gearset of the gearbox 4. Furthermore, the gear sets of the gearbox 4 are provided with a gear shift mechanism. The gear shifting mechanism of the gearbox 4 comprises a gear shifting rocker arm, a connecting rod rocker arm connected with the gear shifting rocker arm and a gear shifting handle connected with the connecting rod rocker arm. The gear shifting handle, the connecting rod rocker arm and the gear shifting rocker arm form a hinge connecting rod type gear shifting mechanism, and the gear shifting handle arranged close to the handle 7 of the rack 1 is moved to realize speed change gear shifting adjustment and control of the gearbox 4. With regard to the gearbox 4 shifting, it is to be noted that: the concrete implementation mode of the gear shifting adjusting mechanism is the same as that of a gearbox of a manual gear shifting automobile in the prior art, and the gear shifting principle is completed by moving a gear shifting handle, so that the details are not repeated. Moreover, the utility model discloses a replace hand tractor, replace hand tractor's handrail, the mode that adopts the tight hand brake of kneading realizes that the tractor turns to the operation different is: the utility model discloses a supporting installation differential mechanism of motor vehicle through the mode of left and right rocking handle 7, in coordination the front driving wheel to 8 with can 360 pivoted tailwheels 9, realize the utility model discloses the operation that turns to of hand locomotive. Specifically, the mounting position and mode of the mechanism are as follows: a front axle 801 is fixed on an axle bracket 802 at the front part of the frame 1; a gearbox 4 is fixedly supported and installed on the lower portion of a front cross beam of a lower plane of a three-dimensional square frame at the rear portion of the rack 1 in a sinking mode; the gearbox 4 is connected with a power input shaft of a differential 10 on a front axle 801 through a universal joint and a coupling by a power output shaft, and power output half shafts at the left end and the right end of the differential 10 respectively drive wheel shafts of front driving wheels 8 arranged at shaft heads at two ends of an axle to rotate in a differential mode, so that differential steering of the locomotive under the boosting and swinging action of the hand handles 7 is realized. It should be noted that, for flexible steering, the tail wheel 9 is fixed on the rear cross beam below the rear three-dimensional frame of the frame 1 through a tail wheel rotating shaft and a tail wheel rotating shaft bracket which support the tail wheel 9 to rotate in the vertical direction by 360 degrees. Regarding the mounting position of the shift mechanism: two support sleeves are fixedly installed on the lower sides of a front frame and a rear frame of an upper plane of a three-dimensional frame at the rear part of the rack 1 in a penetrating mode, a slender shaft capable of rotating around a shaft center is longitudinally fixed in a gap between an oil tank of the first gasoline engine 201 and an exhaust pipe, and a gear shifting handle 803 capable of being shifted left and right around the shaft center is vertically welded at the top end of the slender shaft; one end of a connecting rod rocker is vertically welded at the other end of the long shaft, the other end of the connecting rod rocker is hinged with a gear shifting connecting rod, and the execution end of the gear shifting connecting rod is hinged with a speed-changing driving gear of the gearbox 4. Regarding the throttle cable of the first gasoline engine: a throttle handle 701 connected with a throttle cable of the first gasoline engine 201 is fixed on the handle 7 (preferably, the right-hand handle 7). The accelerator handle 701 is of a bent-angle crank-type structure, and by moving the accelerator handle, the bent-angle crank-type crank of the accelerator handle 701 executes a tail-end pulling accelerator pull wire to control the size switching control of the accelerator of the first gasoline engine 201, so as to switch the idle operation or the full-speed operation of the first gasoline engine 201, and the mode that the first gasoline engine 201 switches the idle operation or the full-speed operation through the pull wire belongs to the prior art, and is not described herein in detail.

(see fig. 4) when the sprayer head i 601 is used for spraying sparse and tall arbor plant such as apple, in order to support the duckbilled sprayer cover 13, the sprayer head can spray towards the right front and the upper side, and can also spray towards the left or right front, further: the mounting frame I11 comprises a right-angled triangular support frame 1101 (shown in figure 4); right angled triangle support 1101 supports axial fan 12 and duckbilled formula shower nozzle cover 13 and upwards sprays to one side, sprays up through the slope, solves the circular limitation problem that sprays of diffusion formula under the prior art, can't satisfy the kiwi fruit rack plant and spray towards eminence large tracts of land, long range. Wherein, axial fan 12 is located duckbilled formula shower nozzle cover 13 rear side, and the casing coaxial link firmly as an organic whole between them, and axial fan provides long-range spraying for the pesticide forward, solves and sprays the range limited, can not pierce through the blade, the technical problem that the blade back can't be dosed. A steering mechanism 121 supporting the axial flow fan 12 and the duckbilled nozzle cover 13 to rotate at 90 degrees simultaneously is arranged between the axial flow fan 12 and the mounting frame I11; the line-shaped spout of the duckbill-type spout can be adjusted horizontally or vertically by the steering mechanism 121. The fan impeller of the axial flow fan 12 is provided with an axial flow fan transmission mechanism 122 for driving the fan impeller rotating shaft to rotate; the axial flow fan transmission mechanism 122 is used for taking power from the second gasoline engine and is driven by the second gasoline engine to operate. The axial flow fan 12 is further provided with a positioning support locking mechanism for fixing the orientation of the fan shell. The positioning support locking mechanism is used for locking and positioning support after the axial flow fan 12 and the duckbilled nozzle cap 13 are adjusted in rotating and shifting, and comprises a connecting lug plate, a support frame body and a necessary fastening assembly.

(refer to fig. 4 again) when spraying aircraft nose I601 is used for spraying big sparse large-scale arbor of apple height and irritates a kind of plant, for through simple transmission structure, realize duckbilled formula shower nozzle cover 13 and spray the switching of orientation left, right, in addition, when kiwi fruit rack plant width is less, can also use duckbilled formula shower nozzle cover 13 to spray the kiwi fruit rack plant in the skew direction of dead ahead to use in a flexible way. Preferably: the steering mechanism 121 comprises a hinge shaft 12101 which is obliquely arranged, an intermediate gear 12102 which is arranged at the shaft end of the hinge shaft 12101, and a driven bevel gear 12103 which is engaged with the intermediate gear 12102 and is used for steering adjustment. The hinge shaft 12101 is rotatably hinged to a fan housing bracket of the axial flow fan 12, and can realize the skew steering adjustment of the axial flow fan 12 to the right front, left side or right side. Furthermore, during the rotation of the axial flow fan 12 supported by the hinge shaft 12101, the driven bevel gear 12103 engages with the intermediate gear 12102 and rotates on the intermediate gear 12102; the driven bevel gear 12102 is guided, supported and steered by the intermediate gear 12102, and the installation is shown in fig. 4. The support of the axle of the intermediate gear 12102 is achieved by means of the mounting shown in fig. 4. The intermediate gear 12103 and the driven bevel gear 12102 function as a transmission mechanism for the axial flow fan 12, in addition to providing a steering direction when the axial flow fan is steered: the axial flow fan transmission mechanism 122 comprises a belt transmission mechanism 12201 for taking power from the gasoline engine 2 and a gear transmission mechanism connected with the belt transmission mechanism 12201: wherein, the tooth transmission mechanism of the axial flow fan transmission mechanism 122 consists of a driving bevel gear 12202, an intermediate bevel gear 12102 and a driven bevel gear 12103 which are sequentially transmitted and orthogonally engaged; the driven bevel gear 12103 finally drives the axial flow fan 12 to rotate through the driven bevel gear shaft. Specifically, the belt transmission mechanism 12201 of the axial-flow fan 12 includes a passive pulley, a drive pulley, and a belt; wherein the driving pulley is arranged on the power output shaft of the second gasoline engine, and the driven pulley is arranged on the power input shaft end of the wheel shaft of the driving bevel gear 12202 (see figure 4). The driving bevel gear 12103 is driven at right angle and engaged with the intermediate bevel gear 12102 to rotate as shown in fig. 4, and then the intermediate bevel gear 12102 is driven at right angle and engaged with the driven bevel gear 12103 to rotate as shown in fig. 4, and the driven bevel gear 12103 is driven by the impeller mounted at the other end of the rotating shaft of the driven bevel gear 12103 to rotate, and finally, the air is blown in an axial flow manner towards the duckbill-type nozzle cap 13.

(as in fig. 3) when the spraying machine head I601 is used for spraying high-size sparse large arbor and shrub plants, the duckbilled nozzle cover 13 can be adjusted in a 90-180-degree turning mode around the rotating shaft of the axial flow fan impeller as the center according to the growth vigor of the plant supporting rods, and further: (as shown in fig. 3), the duckbill nozzle cover 13 and the casing of the axial flow fan 13 are coaxially and fixedly connected into a whole through a flange type connecting structure. A plurality of flange type connecting holes are uniformly distributed on the duckbill type spray nozzle cover 13 and the outer circular ring shell of the axial flow fan 13; through loosening the fastening assembly on the flange connecting hole, the axial flow fan 12 with a fixed relative position rotates the duckbilled nozzle cover 13 clockwise or anticlockwise, and the flange fastening assembly is connected again after rotating a certain angle, so that the rotation adjustment of the angle of the linear nozzle of the duckbilled nozzle cover 13 can be realized.

(as in fig. 3) when spraying aircraft nose I is used for spraying sparse tall and big arbor and shrub class plant such as apple, for the regulation that realizes duckbilled shower nozzle cover and spray the width, further: opening and closing blocking pieces 1301 capable of adjusting the width of a spraying opening of the cover body are symmetrically arranged in the cover body of the duckbilled nozzle cover 13 from left to right; the opening and closing blocking piece 1301 is hinged with the cover body. Through adjusting the angle of opening and shutting of separation blade 1301 to locking with fastening screw, can be directed against the shrub plant of small-size or large-scale size, carry out accurate directional large tracts of land far-range spraying and administer. Similarly (as shown in fig. 3), the duckbill nozzle cover 13 and the casing of the axial flow fan 13 are coaxially and fixedly connected into a whole through a flange type connecting structure. A plurality of flange type connecting holes are uniformly distributed on the duckbill type spray nozzle cover 13 and the outer circular ring shell of the axial flow fan 13; through loosening the fastening assembly on the flange connecting hole, the axial flow fan 12 with a fixed relative position rotates the duckbilled nozzle cover 13 clockwise or anticlockwise, and the flange fastening assembly is connected again after rotating a certain angle, so that the rotation adjustment of the angle of the linear nozzle of the duckbilled nozzle cover 13 can be realized.

(see fig. 7 and 8) when the spraying machine head II 602 is used for spraying kiwifruit trellis plants, in order to realize the adjustment of the working width of the horizontal spraying pipe group 15 by a simple structure, it is preferable that: the horizontal spray pipe group 15 of the sprayer head II 602 is provided with a horizontal width adjusting mechanism; the horizontal width adjusting mechanism comprises a middle fixed spray pipe 1501, a first horizontal spray pipe 1502 and a second horizontal spray pipe 1503, wherein the first horizontal spray pipe 1502 and the second horizontal spray pipe 1503 are arranged in front of and behind the middle fixed spray pipe 1501; the first horizontal spray pipe 1502 and the second horizontal spray pipe 1503 respectively realize the adjustment of the width of the drawing transverse type horizontal spraying operation through guide rod assemblies with the same structure; the guide rod assembly consists of a sliding sleeve group 1504 fixedly connected with the mounting frame II 14, a sliding rod 1505 sliding and displacing in a sleeve body of the sliding sleeve group 1504, and an 8-shaped connecting sleeve 1506 fixedly connected with the sliding rod 1505 into a whole in a welded and sleeved mode; wherein the top of the 8-shaped connecting sleeve 1506 is sleeved and welded with the first or the second horizontal spraying pipe. When the horizontal spraying width needs to be increased, the first spray pipe and the second spray pipe are respectively pulled towards the left outer side and the right outer side, the first spray pipe and the second spray pipe drive the slide bar 1505 fixedly connected with the first spray pipe and the second spray pipe to slide and displace in the sleeve body of the sliding sleeve group 1504, and therefore the horizontal spraying width is prolonged; when needs reduce the level and spray the width, inwards the inboard first, the second spray tube of aligning around simultaneously, can minimize and adjust the level and spray the width, simultaneously, because the shower nozzle of two spray tubes overlaps, can adjust shower nozzle density through closing the atomizer of appropriate quantity to practice thrift the medicine volume of spouting.

(as shown in fig. 9) for the convenience of spraying the kiwi fruit shed plant with the spraying machine head II 602, the spraying machine head II 602 can shuttle from the narrow plant space, namely, the spraying machine head II 602 rotates by 90 degrees, so as to enter the adjacent row of plants for spraying, further: (refer to fig. 8 in conjunction with fig. 9) the mounting bracket ii 14 has a mounting bracket 1404 with a T-shaped support at the top end, and it should be noted that, as shown in the figure, the mounting bracket 1404 of the T-shaped support is composed of a vertical frame body with a T-shaped space at the top end and a horizontal frame body with a T-shaped space at the top end, which are welded and fixedly connected together; the device also comprises an L-shaped bracket 1402 which is rotatably supported and installed by a T-shaped horizontal frame body at the top end of the T-shaped supporting mounting bracket 1404 and is convenient for integrally rotating the horizontal spray pipe group 15; a bracket rotating shaft 1401 is arranged at the bottom of the L-shaped bracket 1402; the bracket rotating shaft 1401 is rotatably matched and installed with a sleeve at the vertical staggered position of the top end of the mounting bracket 1404 of the T-shaped support; the top of the L-shaped bracket 1402 is fixedly welded to the outer side wall of the bottom end of the sliding sleeve assembly 1504 so that the horizontal spray pipe assembly 15 can be driven to integrally rotate when the L-shaped bracket 1402 rotates; further, to lock the position of the horizontal nozzle group 15 after the entire rotation: the horizontal plate body of the L-shaped holder 1402 (see fig. 8) is formed with a tightening assembly 1403 that is press-fit to lock the rotational orientation of the L-shaped holder 1402. When in use, the horizontal spray pipe group 15 has the width as shown in figure 7 which is larger than that of the locomotive, so that the horizontal spray pipe group cannot smoothly pass through the plant spacing as shown in figure 7; therefore, the horizontal spray pipe set 15 shown in fig. 7 is rotated and adjusted to the position shown in fig. 9, so that the agricultural implement of the present invention can smoothly shuttle between sparse narrow plant spaces.

(see fig. 12) to achieve that the sprayer head iii 603 is used for spraying fence-type climbing-planted grape plants, the vertical row of nozzles 18 can adaptively adjust the spraying height for the height of the fence-type grape plants, and further: the sprayer head III 603 comprises a mounting rack III 17, and positioning arc plates 1701 are mounted on the left and right symmetrical outer sides of the mounting rack III 17; the arc-shaped plate 1701 is provided with a plurality of positioning holes 1702, the bottoms of the vertical spray pipes 18 are positioned and locked with the positioning holes 1702 at different arc positions through locking assemblies 1801, and each locking assembly 1801 comprises an omega-shaped clamp and a fastening assembly. The vertical deflection angle of the vertical spray pipes is adjusted through rotation, so that the vertical height of the vertical spray pipes 18 and the spraying radiation area are adjusted, and the spraying drug delivery adjustment on grape vine plant frames with different plant height sizes is met.

It should be understood that the utility model discloses the outlet pipe of gear pump all connects the spray tube of different grade type respectively through a plurality of distributive pipe adapters, through many hoses, for the spray tube supply liquid can. The specific connection mode of the hose, the spray pipe and the water outlet pipe of the gear pump is determined according to the specific communication situation of the spray pipe, and is not limited herein.

The utility model discloses a theory of operation is: the spraying machine head I601 of the utility model is used for spraying and dosing large shrub plants such as apple trees and the like; the spraying machine head II 602 is used for spraying and dosing high-frame shed plants such as kiwi fruits and the like; the sprayer head III 603 is used for spraying and dosing the grape dwarf vine plants; by replacing different machine heads, the multifunctional precise continuous dosing operation of one machine is realized, and the maximization of the pesticide spraying utilization rate is realized; is economical and energy-saving; compared with the rear-mounted spraying operation in the background technology, the front-mounted machine head of the utility model has the advantages that the spraying state, especially the leakage and blockage of the spray head occur, and the driver can find and process the spray operation in time; the front-mounted spraying operation and the whole spraying process visual operation are favorable for accurate directional administration, and the pesticide spraying utilization maximization is realized; furthermore, the utility model discloses when turning to, accomplish with the help of differential mechanism, turn to more nimble light.

From the above description it can be found that: firstly, the utility model discloses a multi-purpose pesticide spraying machine of a machine; the first gasoline engine provides power for the front driving wheel pair 8 and the gear pump 3 without being plugged; the second gasoline engine 202 provides power for the axial flow fan 12 without plugging electricity; no power cord is needed, and the utility model is suitable for long-distance field pesticide spraying operation. The utility model adopts the rear hand push hand which has the similar steering mode of operating the hand tractor to steer the hand tractor, combines the gasoline engine 2 to drive the front wheel to walk, and completes the steering by means of the differential mechanism; compared with a rear locomotive in the background technology, the steering operation is flexible, and the visual operation is flexible and convenient; the spraying air flow is always visually operated under the combined action of the front directional accurate spraying of three different spraying machine heads; the driver and the locomotive advance forward in the same direction all the time, the body does not need to be twisted, and the spraying is flexible, accurate, directional and efficient. The utility model discloses sprayer head I601's duckbilled spout, axial fan combined action in coordination, prior art can realize once blowing the blade two sides and receive the medicine simultaneously, the range is far away, and the penetrating power is stronger, and the blade surface receives the medicine more even, the maximize of drug utilization rate.

Furthermore, the utility model takes the gasoline engine as the power source; the power line does not need to be pulled, and a heavy storage battery does not need to be carried; and outputting power through the corresponding transmission mechanism. Taking the first gasoline engine as an example, one power output of the first gasoline engine provides power for the gear pump through belt transmission; the other power output provides power for the gearbox and the front axle driving wheels 8; the axial flow fan 12 is powered by a second gasoline engine and drives the wind impeller to rotate through belt transmission and a right-angle bevel gear transmission. Moreover, the spraying radiation area of the spraying machine head I601 can be adjusted through the opening and closing size of the opening and closing baffle plate 1301, and the spraying machine head is locked by a fastening piece after being adjusted. By rotating the sprayer head I601, the medicine can be administered towards the right front, and can also be administered towards the left or right side. For the spraying machine head II 602, the horizontal spraying width can be adjusted according to the difference of the planting line spacing of the kiwi fruits, and the drawing adjustment of the width is completed, so that the spraying machine head is simple and convenient. For the sprayer head III 603, the spraying height can be adaptively adjusted according to the height of the grape plant; can realize the high-efficient spraying operation of the biserial short grape plants. In addition, when the locomotive is not driven to reach or needs to be aimed at a small narrow border field for spraying, such as pepper seedlings and other plants, a single atomizing spray gun 21 connected with a hose on a winch can be used for spraying and dosing in a fourth spraying mode. Therefore, any one of the four spraying modes is selected and replaced or adjusted according to actual needs; is practical and convenient; the power system of the cooperative sprayer does not need to be jointly acted by plugging electricity, the transmission is simple and reliable, the stability and the efficiency are high, the machine has multiple functions, the universality is excellent, and the economy, the practicability and the reliability are realized.

In conclusion, the spraying machine has multiple purposes, ideal universality, economy, practicability and high efficiency; the operation is convenient, the steering is simple, the visual operation is simple and reliable.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that all equivalent changes made by the contents of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The self-propelled multipurpose sprayer comprises a rack (1), wherein a rack body of the rack (1) is fixedly supported and provided with a gasoline engine (2), a gear pump (3), a gearbox (4) and a liquid medicine barrel (5); the method is characterized in that: the front end of the frame body of the frame (1) is fixedly supported and provided with a detachable and replaceable spraying machine head (6); the spraying machine head (6) comprises a spraying machine head I (601), a spraying machine head II (602) and a spraying machine head III (603); the spraying machine head I (601) comprises a mounting frame I (11), an axial flow fan (12) and a duckbilled type spray head cover (13); the spraying machine head II (602) comprises a mounting frame II (14), a horizontal spraying pipe group (15) with adjustable horizontal length is arranged at the top end of the mounting frame II (14), and two ends of the horizontal spraying pipe group (15) are communicated with inclined spraying pipes (16) which spray obliquely downwards; the sprayer head III (603) comprises a mounting rack III (17) and vertical spray pipes (18) which are symmetrically arranged at the left and right sides of the mounting rack III (17) and vertically or obliquely spray; a winch (19) is mounted on the side of the frame body of the frame (1) in a suspension mode, the winch (19) is wound and used for accommodating a flexible pipe (20), and a single atomizing spray gun (21) is mounted at the end of the flexible pipe (20); the rear part of the frame body of the frame (1) is provided with double handles (7) which are bilaterally symmetrical; the front side of the bottom of the frame body of the frame (1) is provided with a front driving wheel pair (8) which is bilaterally symmetrical; a tricycle type wheel set is formed together with the front driving wheel set (8), and a tail wheel (9) rotating 360 degrees in the vertical direction is arranged on the rear side of the bottom of the frame body of the frame (1); wherein the front driving wheel pair (8) is steered through a differential (10); the power input end of the differential (10) is connected with the power output end of the gearbox (4) through a universal joint and a coupling, and the power input end of the gearbox (4) takes power from one belt transmission power output end of the gasoline engine (2) through belt transmission; the other belt transmission power output end of the gasoline engine (2) is connected with the power input end of the gear pump (3) to provide power for the gear pump (3).

2. The self-propelled multipurpose sprayer of claim 1, wherein: the gasoline engine (2) comprises a first gasoline engine (201) and a second gasoline engine (202); the second gasoline engine (202) provides power for the axial flow fan (12); the first gasoline engine (201) drives a main transmission shaft (2011) to rotate through belt transmission, and a first driven belt wheel (2012) and a second driven belt wheel (2013) which are divided into two paths to output power are coaxially and fixedly installed on the main transmission shaft (2011); the first driven pulley (2012) and the second driven pulley (2013) respectively provide power for the front driving wheel pair (8) and the gear pump (3) through corresponding transmission mechanisms.

3. The self-propelled multipurpose sprayer of claim 1, wherein: the mounting frame I (11) comprises a right-angled triangular support frame (1101); the right-angled triangular support frame (1101) supports the axial flow fan (12) and the duckbilled spray head cover (13) to spray obliquely upwards; the axial flow fan (12) is positioned at the rear side of the duckbilled nozzle cover (13) and is coaxially and fixedly connected with the duckbilled nozzle cover into a whole; a steering mechanism (121) for supporting the axial flow fan (12) and the duckbilled nozzle cover (13) to rotate at 90 degrees simultaneously is arranged between the axial flow fan (12) and the mounting frame I (11); the fan impeller of the axial flow fan (12) is provided with an axial flow fan transmission mechanism (122) for driving a fan impeller rotating shaft to rotate; the axial flow fan (12) is also provided with a positioning support locking mechanism for fixing the orientation of the axial flow fan.

4. The self-propelled multipurpose sprayer of claim 3, wherein: the steering mechanism (121) comprises a hinge shaft (12101) which is obliquely arranged, an intermediate gear (12102) is arranged at the shaft end of the hinge shaft (12101), and a driven bevel gear (12103) for steering adjustment is meshed with the intermediate gear (12102); the axial flow fan transmission mechanism (122) comprises a belt transmission mechanism (12201) for taking power from the gasoline engine (2) and a tooth transmission mechanism connected with the belt transmission mechanism (12201); the gear transmission mechanism consists of a driving bevel gear (12202), an intermediate gear (12102) and a driven bevel gear (12103) which are in orthogonal meshing transmission; wherein, the driven bevel gear (12103) drives the wind impeller rotating shaft of the axial flow fan (12) to rotate.

5. The self-propelled multipurpose sprayer of claim 3, wherein: the duckbilled nozzle cover (13) is coaxially and fixedly connected with the shell of the axial flow fan (12) into a whole through a flange type connecting structure.

6. The self-propelled multipurpose sprayer according to claim 1, 3, 4 or 5, characterized in that: opening and closing blocking pieces (1301) capable of adjusting the width of a spraying opening of the cover body are symmetrically arranged in the cover body of the duckbilled spray head cover (13) from left to right; the opening and closing blocking piece (1301) is hinged with the cover body.

7. The self-propelled multipurpose sprayer of claim 1, wherein: the horizontal spray pipe group (15) of the sprayer head II (602) is provided with a horizontal width adjusting mechanism; the horizontal width adjusting mechanism comprises a middle fixed spray pipe (1501), and a first horizontal spray pipe (1502) and a second horizontal spray pipe (1503) which are arranged in front of and behind the middle fixed spray pipe (1501); the first horizontal spray pipe (1502) and the second horizontal spray pipe (1503) realize the adjustment of the width of the drawing transverse type horizontal spraying operation through guide rod assemblies with the same structure respectively; the guide rod assembly consists of a sliding sleeve set (1504) fixedly connected with the mounting frame II (14), a sliding rod (1505) sliding and displacing in a sleeve body of the sliding sleeve set (1504), and an 8-shaped connecting sleeve (1506) fixedly connected with the sliding rod (1505) into a whole in a welded and sleeved mode; wherein the top part of the 8-shaped connecting sleeve (1506) is sleeved and welded with the first or the second horizontal jet pipe.

8. The self-propelled multipurpose sprayer of claim 7, wherein: the mounting frame II (14) is provided with a mounting bracket (1404) with a T-shaped supporting top end, and an L-shaped bracket (1402) which is rotatably supported and mounted by the top end of the mounting bracket (1404) with the T-shaped supporting top end and is convenient for integrally rotating the horizontal spray pipe group (15); a bracket rotating shaft (1401) is arranged at the bottom of the L-shaped bracket (1402); the top of the L-shaped bracket (1402) is fixedly connected with the outer side wall of the bottom end of the sliding sleeve group (1504) in a welding mode; the horizontal plate of the L-shaped bracket (1402) is provided with a tightening component (1403) for locking the rotation direction of the L-shaped bracket (1402) in a compression mode.

9. The self-propelled multipurpose sprayer of claim 1, wherein: the sprayer head III (603) comprises a mounting rack III (17), and positioning arc-shaped plates (1701) are mounted on the left and right symmetrical outer sides of the mounting rack III (17); the plate body of the arc-shaped plate (1701) is provided with a plurality of positioning holes (1702), and the bottom of the vertical row of spray pipes (18) is positioned and locked with the positioning holes (1702) at different positions through a locking assembly (1801), so that the vertical height and the vertical swing angle of the vertical row of spray pipes (18) are adjusted.