CN108207894B

CN108207894B - Special equipment for protecting crops or fruit tree seedlings

Info

Publication number: CN108207894B
Application number: CN201810009529.8A
Authority: CN
Inventors: 蔡宜和
Original assignee: Fan Dongting
Current assignee: Fan Dongting
Priority date: 2018-01-05
Filing date: 2018-01-05
Publication date: 2020-06-09
Anticipated expiration: 2038-01-05
Also published as: CN111616123A; CN108207894A

Abstract

The invention provides special equipment for protecting crops or fruit tree seedlings, which comprises a vehicle body, a water tank, a liquid spraying device, a power transmission device and a spraying range adjusting device, wherein the vehicle body generates a rotating force when moving, the rotating force provides spraying power for the liquid spraying device and also provides adjusting power for the spraying range adjusting device, the power transmission device is used for receiving the rotating force and transmitting the rotating force to the liquid spraying device and the spraying range adjusting device, the water tank is arranged on the vehicle body and is used for providing spraying liquid for the liquid spraying device, the liquid spraying device sprays the liquid outwards under the action of the spraying power, the spraying range adjusting device adjusts the spraying range of the liquid spraying device under the action of the adjusting power, the spraying range adjusting device comprises a height adjusting device and a length adjusting device, the height adjusting device is used for adjusting the spraying height of the liquid spraying device, the length adjusting device is used for adjusting the horizontal spraying length of the liquid spraying device.

Description

Special equipment for protecting crops or fruit tree seedlings

Technical Field

The invention relates to a protection device for crops or fruit tree seedlings.

Background

In the modernized fruit tree planting process, for preventing fruit tree and fruit growing worm or sick, need often to use insecticide etc. to spray for the protective liquid medicine of fruit tree, play the prevention effect, nevertheless spray the in-process, because the needs of different fruit trees spray the scope inconsistent, current spraying apparatus is difficult to adjust at any time and sprays the height, it is not good to cause to spray the effect, and the height of fruit tree often is higher, spray personnel need to raise the head and spray, vaporific liquid medicine can get into and spray person's oral cavity and nostril, influence healthy, in addition, the intensity of labour of manual spraying mode is big, operating personnel slowly comes in and carries out spraying of pesticide, it is not high to spray efficiency.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide pesticide spraying equipment with a spraying range capable of being adjusted at any time.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

A professional equipment for crops or fruit tree seedling protection, which comprises a carriage body, the water pitcher, liquid sprinkler, power transmission device, spray the scope adjusting device, the automobile body produces the revolving force when removing, this revolving force provides spraying power for liquid sprinkler, this revolving force still provides regulation power for spraying the scope adjusting device simultaneously, power transmission device is used for receiving the revolving force and transmits the revolving force to liquid sprinkler and sprays the scope adjusting device with liquid sprinkler, the water pitcher is installed in the automobile body and is used for providing for liquid sprinkler and sprays liquid, liquid sprinkler outwards sprays liquid under the power effect of spraying, it adjusts liquid sprinkler's spraying scope under the power effect of adjusting to spray the scope adjusting device;

the liquid spraying device comprises a telescopic guide pipe, a spray head and a closed switch, wherein the closed switch is used for enabling the liquid spraying device to be in an open or closed state;

the spraying range adjusting device comprises a height adjusting device and a length adjusting device, the height adjusting device is used for adjusting the spraying height of the liquid spraying device, and the length adjusting device is used for adjusting the horizontal spraying length of the liquid spraying device.

As a further improvement of the present solution.

The water tank, the liquid spraying device, the power transmission device and the spraying range adjusting device are all mounted on the frame, and when the vehicle body moves, the axle rotates and generates rotating force.

As a further improvement of the present solution.

The height adjusting device comprises a first connecting rod, a pushing mechanism, a sliding component and a main sliding rail, wherein the main sliding rail is arranged on the frame, the guiding direction of the main sliding rail is vertical to the ground, the telescopic guide pipe is arranged on the sliding component, the sliding component is arranged in the main slide rail, the sliding component is matched with the main slide rail and can slide along the guiding direction of the main slide rail, when the sliding component displaces along the guiding direction of the main slide rail, the tractable telescopic guide pipe moves synchronously with the guide pipe, one end of the first connecting rod is connected with the power transmission device, the other end of the first connecting rod is contacted with the pushing mechanism, the power transmission device receives the rotating force generated by the rotation of the axle and transmits the rotating force to the first connecting rod, the first connecting rod moves up and down along the guide direction of the main slide rail under the action of power, the pushing mechanism is drawn to move synchronously, the pushing mechanism is contacted with the sliding component, and the pushing mechanism moves and pushes the sliding component to move along the guide direction of the main sliding rail;

the height adjusting device further comprises a triggering locking mechanism arranged in the main sliding rail, the motion state of the triggering locking mechanism can be divided into a triggering state and a locking state, when the triggering locking mechanism is in the triggering state, the pushing end of the first connecting rod is located between the two adjacent guide posts, the first connecting rod moves and pulls the guide posts to move synchronously with the first connecting rod, when the triggering locking mechanism is in the locking state, the triggering locking mechanism can enable the pushing end of the first connecting rod to be separated from the contact with the guide posts, and the pushing mechanism is locked to enable the height of the pushing mechanism to be kept unchanged.

As a further improvement of the present solution.

The sliding component comprises a lower fixed plate and an upper fixed plate, the telescopic guide pipe is arranged between the lower fixed plate and the upper fixed plate, and the lower fixed plate is contacted with the pushing mechanism;

the pushing mechanism comprises a pushing plate, a plurality of guide posts which are uniformly distributed at intervals along the height direction of the pushing plate are arranged on the surface of the pushing plate facing to a first connecting rod, one end of the first connecting rod is connected with the power transmission device, the other end of the first connecting rod is a pushing end and is positioned between two adjacent guide posts, and when the first connecting rod moves and pushes the guide posts to move up and down along the guide direction of the main slide rail, the pushing plate can be pulled to move synchronously;

a sliding part is arranged between the pushing plate and the lower fixed plate, the sliding part is a trigger slide rail arranged on the pushing plate and a trigger slide block arranged on the lower fixed plate and matched with the trigger slide rail, the guiding direction of the trigger slide rail is vertical to the guiding direction of the main slide rail, and the pushing plate can move close to or far away from the first connecting rod along the guiding direction of the trigger slide rail through the matching of the trigger slide block and the trigger slide rail;

the trigger locking mechanism comprises a locking member and a locking shell, wherein the locking member is arranged in the locking shell, the locking member comprises a connecting rod, a locking rod and a plurality of locking holes which are arranged on the main slide rail and are uniformly distributed at intervals along the guide direction of the main slide rail, the connecting rod is used for connecting the locking rod with the push plate, the locking rod is matched with the locking holes, the locking rod and the locking holes are positioned on the same straight line parallel to the guide direction of the main slide rail, the locking shell is of a cylindrical barrel structure with one open end and the other closed end, a knob capable of driving the locking shell to rotate is arranged on the locking shell, a sliding groove penetrating through the wall thickness of the locking shell is arranged on the outer circumferential surface of the locking shell, the connecting rod is positioned in the sliding groove and can slide along the guide direction of the sliding groove, the sliding groove can be divided into three parts, namely a locking groove, a, The other end of the guide groove I is communicated with the trigger groove, the guide groove I and the locking groove and the guide groove I and the trigger groove are arranged in an angle mode, the guide groove I is used for guiding the connecting rod to the locking groove or the trigger groove, when the connecting rod is located in the locking groove, the trigger locking mechanism is in a locking state, and when the connecting rod is located in the trigger groove, the trigger locking mechanism is in a trigger state.

As a further improvement of the present solution.

The length adjusting device comprises a second connecting rod, a first gear and rack transmission mechanism, a first bevel gear transmission mechanism, a second bevel gear transmission mechanism and a second gear and rack transmission mechanism, wherein one end of the second connecting rod is connected with a power transmission device, the other end of the second connecting rod is connected with the first gear and rack transmission mechanism, the power transmission device receives rotating force generated by rotation of an axle and transmits the rotating force to the second connecting rod, the second connecting rod moves along the axial direction of the axle under the action of power, the telescopic guide pipe is connected with the second gear and rack transmission mechanism, power generated by movement of the second connecting rod is transmitted to the telescopic guide pipe through the first gear and rack transmission mechanism, the first bevel gear transmission mechanism, the second bevel gear transmission mechanism and the second gear and rack transmission mechanism, and the telescopic guide pipe extends or.

As a further improvement of the present solution.

The first gear rack transmission mechanism comprises a first rack, a first gear, a first middle rotating shaft and a support frame, wherein the first middle rotating shaft is horizontally arranged, the axial direction of the first middle rotating shaft is perpendicular to the axial direction of the axle, the extending direction of the first rack is parallel to the axial direction of the axle, the support frame is fixedly arranged on the frame, the first rack is movably arranged on the support frame, a first sliding part is arranged between the first rack and the support frame, the first sliding part is a first sliding block arranged on the first rack and a first sliding rail arranged on the support frame and matched with the first sliding block, the guiding direction of the first sliding rail is parallel to the axial direction of the axle, the first rack can move along the guiding direction of the first sliding rail by matching the first sliding block and the first sliding rail, the gear is sleeved outside the power input shaft end of the first middle rotating shaft and is meshed with the first rack, a second connecting, the first gear rotates to drive the first intermediate rotating shaft to rotate;

the bevel gear transmission mechanism I comprises a bevel gear a, a bevel gear b and an intermediate rotating shaft II, wherein the axial direction of the intermediate rotating shaft II is parallel to the axial direction of the axle, the bevel gear a is sleeved outside the power output shaft end of the intermediate rotating shaft I, the bevel gear b is sleeved outside the power input shaft end of the intermediate rotating shaft II and is meshed with the bevel gear a, and the intermediate rotating shaft I rotates and enables the intermediate rotating shaft II to rotate through the bevel gear a and the bevel gear b;

the bevel gear transmission mechanism II comprises a bevel gear c, a bevel gear d, a middle rotating shaft III and a middle rotating shaft IV, wherein the axial direction of the middle rotating shaft IV is parallel to the guiding direction of the main sliding rail, the middle rotating shaft III and the middle rotating shaft II are coaxially arranged, a coupling I is arranged between the middle rotating shaft III and the middle rotating shaft II, the power output shaft end of the middle rotating shaft II is connected with the power input shaft end of the coupling I, the power output shaft end of the coupling I is connected with the power input shaft end of the middle rotating shaft III, the middle rotating shaft II rotates and enables the middle rotating shaft III to rotate through the coupling I, the bevel gear c is sleeved outside the power output shaft end of the middle rotating shaft III, the bevel gear d is sleeved outside the power input shaft end of the middle rotating shaft IV and is meshed with the;

the second gear rack transmission mechanism comprises a second rack, a second gear and a fifth middle rotating shaft, the fifth middle rotating shaft and the fourth middle rotating shaft are coaxially arranged, a second coupler is arranged between the fifth middle rotating shaft and the fourth middle rotating shaft, the power output shaft end of the fourth middle rotating shaft is connected with the power input shaft end of the second coupler, the power output shaft end of the second coupler is connected with the power input shaft end of the fifth middle rotating shaft, the fourth middle rotating shaft rotates and enables the fifth middle rotating shaft to rotate through the second coupler, the second rack is arranged between an upper fixing plate and a lower fixing plate, the extending direction of the second rack is parallel to the extending direction of the first rack, a second sliding part is arranged between the second rack and the lower fixing plate, the second sliding part is a second sliding block arranged on the second rack and a second sliding rail which is arranged on the lower fixing plate and matched with the second sliding block, the guiding direction of the second sliding rail is parallel to the guiding, the power output end part of the second rack is fixedly connected with the telescopic guide pipe, the second gear is sleeved outside the power output shaft end of the fifth middle rotating shaft and meshed with the second rack, and the fifth middle rotating shaft rotates and enables the telescopic guide pipe to extend or contract through the second gear and the second rack.

As a further improvement of the present solution.

The length adjusting device also comprises a closing mechanism, wherein the closing mechanism is used for switching the bevel gear c and the bevel gear d in the bevel gear transmission mechanism II between an engaged state and a disengaged state;

the bevel gear d is connected with the middle rotating shaft IV through a connecting piece, the bevel gear d can move along the axial direction of the middle rotating shaft IV, and the connecting piece is an external spline arranged on the middle rotating shaft IV and an internal spline arranged on the bevel gear d;

the closing mechanism comprises a movable support and a handle, the movable support comprises an upper support and a lower support, the upper support and the lower support are of an integrated structure, the upper support is provided with a first sleeve hole matched with a fourth middle rotating shaft, the upper support is movably sleeved outside the fourth middle rotating shaft through the first sleeve hole and is positioned above a bevel gear d, the lower support is provided with a second sleeve hole matched with the fourth middle rotating shaft, the lower support is movably sleeved outside the fourth middle rotating shaft through the second sleeve hole and is positioned below the bevel gear d, when the movable support displaces along the axial direction of the fourth middle rotating shaft, the bevel gear b can be pulled to move synchronously with the movable support, the handle comprises a rocker and a middle rod, one end of the middle rod is hinged with the movable support, a hinged core wire shaft is parallel to the axial direction of the fourth middle rotating shaft, the other end of the middle rod is fixedly connected with the rocker, when the rocker displaces along the axial direction of the fourth middle rotating shaft, the movable bracket can be pulled to move synchronously through the middle rod;

the closing mechanism also comprises a shell in a cubic structure, the power output shaft ends of the bevel gear c, the bevel gear d and the middle rotating shaft III and the power input shaft end of the middle rotating shaft IV are all positioned in the shell, a limiting guide groove is arranged on the shell, the middle rod is positioned in the limiting guide groove, the rocker is positioned outside the shell, the limiting guide groove is divided into three parts which are respectively a first limiting groove, a second guide groove and a second limiting groove, the first limiting groove and the second limiting groove are horizontally arranged, the first limiting groove is positioned above the second limiting groove, the second guide groove is vertically arranged, one end of the second guide groove is communicated with the first limiting groove, the other end of the second guide groove is communicated with the second limiting groove, the first limiting groove, the second guiding groove and the second limiting groove form a Z-shaped structure, the second guide groove is used for guiding the middle rod to the first limiting groove or the second limiting groove, and when the, and the bevel gear c and the bevel gear d are in a meshed state, and when the middle rod is positioned in the first limiting groove, the bevel gear c and the bevel gear d are in a disengaged state.

As a further improvement of the present solution.

The liquid spraying device also comprises a liquid guide system and a water pump mechanism, wherein the liquid guide system is used for conveying the liquid in the water tank to the water pump mechanism, the water pump mechanism is used for conveying the liquid to the spray head, and the spray head is used for spraying the liquid outwards;

the water pump mechanism comprises a pump body, a sealing plug and a push rod, wherein the pump body is of a cylindrical barrel structure with two open ends, a connecting nozzle communicated with an inner cavity of the pump body is arranged at one opening of the pump body, a connector communicated with the inner cavity of the pump body is arranged on the outer circular surface of the pump body, a one-way valve used for controlling liquid to flow from a water tank to the pump body in one way is arranged at the joint of the connector and a liquid guide system, the sealing plug is arranged in the inner cavity of the pump body and forms a sealed sliding fit with the sealing plug, one end of the push rod is connected with the sealing plug, the other end of the push rod is connected with a power transmission device, the power transmission device receives rotating force generated by the rotation of an axle and transmits the rotating force to the push rod, the push rod drives the sealing plug to slide along the extending direction of the inner cavity of the pump, thereby pushing the liquid in the liquid containing cavity to flow and be discharged through the connecting nozzle;

the liquid diversion system comprises a first diversion pipe, a second diversion pipe and a diversion hose, wherein one end of the first diversion pipe is communicated with the water tank, the other end of the first diversion pipe is communicated with the interface of the pump body, one end of the second diversion pipe is communicated with the connecting nozzle of the pump body, the other end of the second diversion pipe is communicated with one end of the diversion hose, the other end of the diversion hose is communicated with the telescopic diversion pipe, the closing switch is arranged on the first diversion pipe, a one-way control mechanism for controlling liquid to flow from the pump body to the spray nozzle in a one-way mode is arranged on the second diversion pipe, the one-way valve is arranged at the connecting position of the first diversion pipe and the interface, and the structure of the one;

the second guide pipe comprises a lower guide pipe and an upper guide pipe, the lower guide pipe is connected and communicated with a connecting nozzle of the pump body, the upper guide pipe is sleeved inside the lower guide pipe, and the one-way control mechanism is arranged at the connection position of the lower guide pipe and the upper guide pipe;

the lower guide pipe is internally provided with a built-in step, the center of the built-in step is provided with a water through hole, the one-way control mechanism comprises a liquid stopping ball and a trigger spring, the liquid stopping ball is arranged above the water through hole and is matched with the water through hole, one end of the trigger spring is abutted against the liquid stopping ball, the other end of the trigger spring is abutted against the upper guide pipe, and the elastic force of the trigger spring enables the liquid stopping ball to move close to the water through hole along the axial direction of the lower guide pipe.

As a further improvement of the present solution.

The power transmission device comprises a power transmission mechanism and a linkage member, wherein the linkage member comprises a linkage member I and a linkage member II, the linkage member I is connected with the power transmission mechanism, the linkage member II is connected with the linkage member I, the link rod I is connected with the linkage member I, the link rod II is connected with the linkage member II, power generated by rotation of the axle is transmitted to the linkage member I through the power transmission mechanism and is transmitted to the link rod I through the linkage member I, and meanwhile, the linkage member I also transmits power to the linkage member II and is transmitted to the link rod II through the linkage member II;

the power transmission mechanism comprises a transmission rotating shaft and a gear transmission mechanism, the transmission rotating shaft is horizontally arranged, the axial direction of the transmission rotating shaft is perpendicular to the axial direction of the axle, the gear transmission mechanism is a helical gear transmission mechanism, the helical gear transmission mechanism comprises a driving helical gear and a driven helical gear, the driving helical gear is sleeved outside the axle, the driven helical gear is sleeved outside the transmission rotating shaft, and the driving helical gear is meshed with the driven helical gear;

the linkage member I comprises a first rotating disc, a first connecting plate, a first linkage shaft and a first linkage shell, the first linkage shell is of a cubic structure, a first shaft hole is formed in the center of the end face, facing the transmission rotating shaft, of the first linkage shell, the axial direction of the first shaft hole is parallel to the axial direction of the transmission rotating shaft, the first linkage shaft is matched with the first shaft hole and can rotate around the axis of the first linkage shaft, the first rotating disc is fixedly connected with the transmission rotating shaft and is coaxially arranged with the transmission rotating shaft, the transmission rotating shaft rotates to drive the first rotating disc to rotate, one end of the first connecting plate is hinged with the first rotary table, the hinged position deviates from the circle center of the first rotary table, and the core line of the hinged shaft is parallel to the axial direction of the transmission rotating shaft;

the linkage member I also comprises a supporting plate and a guide post, the supporting plate is fixedly arranged on the frame and is positioned below the linkage shell I, the guide post is fixedly arranged on the supporting plate, the guide direction of the guide post is vertical to the ground, the linkage shell I is also provided with a guide hole matched with the guide post, the linkage shell I is arranged on the guide post in a matching way through the guide hole and the guide post, the connection plate I deflects to drive the linkage shaft I to move, the motion of the linkage shaft I can be divided into vertical sliding along the guide direction of the guide post and rotation around the axis of the linkage shaft I, and the vertical sliding of the linkage shaft I along the guide direction of the guide post can drive the linkage shell I to vertically slide along the guide direction of the guide post;

the first connecting rod is fixedly connected with the first linkage shell, and when the first linkage shell slides up and down along the guiding direction of the guide post, the first connecting rod can be pulled to move synchronously with the first linkage shell;

the second linkage member comprises a second connecting plate, a second linkage shaft and a second linkage shell, the second linkage shell is of a cubic structure, a second shaft hole is formed in the center of the end face, facing the first linkage shell, of the second linkage shell, the axial direction of the second shaft hole is parallel to the axial direction of the transmission rotating shaft, the linkage shaft II is matched with the shaft hole II and can rotate around the axis of the linkage shaft II, one end of the connecting plate II is hinged with the power driving end of the linkage shaft I, the core line of the hinged shaft is parallel to the axial direction of the transmission rotating shaft, the other end of the connecting plate II is hinged with the power receiving end of the linkage shaft II, the core line of the hinged shaft is parallel to the axial direction of the transmission rotating shaft, the motion of the linkage shaft I drives the connecting plate II to deflect and enables the linkage shaft II to move, the motion of the linkage shaft II can be divided into axial motion along the axle and rotation around the axis of the linkage shaft II, and the motion of the linkage shaft II along the;

the second connecting rod is fixedly connected with the second linkage shell, and the second linkage shell can pull the second connecting rod to move synchronously with the second linkage shell when moving along the axial direction of the axle;

one end of the push rod is connected with the sealing plug, the other end of the push rod is connected with the linkage shell II, when the linkage shell II moves along the axial direction of the axle, the push rod can be pulled to move synchronously with the axle, and the push rod moves and drives the sealing plug to slide along the extending direction of the inner cavity of the pump body.

As a further improvement of the present solution.

The number of the liquid spraying devices is two, the two liquid spraying devices are respectively arranged on one side of the vehicle body, the water tank comprises a water tank body and a three-way pipe, the water tank body is used for storing liquid to be sprayed, the three-way pipe comprises two liquid outlet ports and one liquid inlet port, first flow guide pipes in the two liquid spraying devices are respectively connected to one liquid outlet port of the three-way pipe, the water tank body is connected with the liquid inlet ports of the three-way pipe, and the liquid in the water tank body respectively enters the liquid spraying devices positioned on the two sides of the vehicle body through the three-way pipe;

the number of the spraying range adjusting devices is two, and the two spraying range adjusting devices and the corresponding liquid spraying devices are positioned on the same side of the vehicle body.

Compared with the prior art, the invention has the advantages that the spraying range of the spray head can be adjusted at any time, and the power is obtained by moving the vehicle body, thereby reducing the labor intensity of operators.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following embodiments will be provided

The drawings that need to be used are briefly introduced, it being clear that the drawings in the following description are only some embodiments of the invention, and that further drawings can be derived from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic structural view of the power transmission device of the present invention.

Fig. 4 is a schematic structural diagram of a first linking member of the present invention.

Fig. 5 is a schematic structural view of a second linking member of the present invention.

Fig. 6 is a schematic structural view of a liquid spraying apparatus of the present invention.

Fig. 7 is a cross-sectional view of the water pump mechanism of the present invention.

Fig. 8 is a schematic structural view of the telescopic duct of the present invention.

FIG. 9 is a cross-sectional view of the one-way control mechanism of the present invention.

Fig. 10 is a schematic structural view of a spray range adjusting device of the present invention.

Fig. 11 is a schematic structural view of a spray range adjusting device of the present invention.

Fig. 12 is a schematic structural view of the height adjusting device of the present invention.

Fig. 13 is a schematic view of the engagement of the trigger lock mechanism of the present invention with the main slide.

Fig. 14 is a schematic structural view of the trigger lock mechanism of the present invention.

Fig. 15 is a schematic structural view of the lock housing of the present invention.

Fig. 16 is a schematic structural view of the length adjustment device of the present invention.

Fig. 17 is a schematic view of the closure mechanism of the present invention.

FIG. 18 is a cross-sectional view of the closure mechanism of the present invention.

Fig. 19 is a schematic structural view of the housing of the present invention.

Detailed Description

The technical scheme in the embodiment of the invention will be clear and complete by combining the attached drawings in the embodiment of the invention

In the description, it is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 19, the special equipment for protecting crops or fruit tree seedlings comprises a vehicle body 100, a water tank, a liquid spraying device 400, a power transmission device and a spraying range adjusting device, wherein the vehicle body 100 generates a rotating force when moving, the rotating force provides spraying power for the liquid spraying device 400, and simultaneously provides adjusting power for the spraying range adjusting device, the power transmission device is used for receiving the rotating force and transmitting the rotating force to the liquid spraying device 400 and the spraying range adjusting device, the water tank is mounted on the vehicle body 100 and is used for providing spraying liquid for the liquid spraying device 400, the liquid spraying device 400 sprays the liquid outwards under the action of the spraying power, and the spraying range adjusting device adjusts the spraying range of the liquid spraying device 400 under the action of the adjusting power.

The vehicle body 100 includes a vehicle frame 110 and an axle 120, the water tank, the liquid spraying device 400, the power transmission device, and the spraying range adjusting device are all installed on the vehicle frame 110, and when the vehicle body 100 moves, the axle 120 rotates and generates a rotating force.

As shown in fig. 1 and 6, the number of the liquid spraying devices 400 is two, and the two liquid spraying devices 400 are respectively disposed on one side of the vehicle body 100, the water tank includes a water tank body and a three-way pipe, the water tank body is used for storing the liquid to be sprayed, preferably, the liquid to be sprayed is a chemical agent for protecting crops and landscaping seedlings, the three-way pipe includes two liquid outlet ports and one liquid inlet port, the two liquid spraying devices 400 are respectively connected to one liquid outlet port of the three-way pipe, the water tank body is connected to the liquid inlet port of the three-way pipe, and the liquid in the water tank body respectively enters the liquid spraying devices 400 located on two sides of the vehicle body 100 through the three-way pipe.

As shown in fig. 6, the liquid spraying apparatus 400 includes a liquid diversion system 410, a water pump mechanism 420 and an injector head 430, wherein the liquid diversion system 410 is used for conveying the liquid in the water tank body to the water pump mechanism 420, the water pump mechanism 420 is used for conveying the liquid to the injector head 430, and the injector head 430 is used for spraying the liquid outwards.

More optimally, in order to ensure that the liquid contained in the water tank body keeps constant water pressure so as to achieve the optimal effect of spraying outwards, a pressurizing device for pressurizing is further arranged in the water tank body, and preferably, the pressurizing device is a pressure pump.

As shown in fig. 7, the water pump mechanism 420 includes a pump body 421, a sealing plug 425, and a push rod 424, where the pump body 421 is a cylindrical structure with two open ends, a connection mouth 423 connected with an inner cavity of the pump body 421 is disposed at an opening of the pump body 421, a connection port 422 connected with the inner cavity of the pump body 421 is disposed on an outer circumferential surface of the pump body 421, a one-way valve for controlling one-way flow of liquid from the water tank body to the pump body 421 is disposed at a connection position of the connection port 422 and the liquid diversion system 410, the sealing plug 425 is disposed in the inner cavity of the pump body 421 and forms a sealed sliding fit with the inner cavity, one end of the push rod 424 is connected with the sealing plug 425, the other end is connected with a power transmission device, the power transmission device receives a rotation force generated by rotation of the axle 120 and transmits the rotation force to the push rod 424, The area between the inner cavity of the pump body 421 and the connection mouth 423 forms a liquid containing inner cavity, and the liquid in the liquid containing inner cavity is pushed to flow and is discharged through the connection mouth 423 through the sliding of the sealing plug 425 in the pump body 421; the liquid is discharged through the connecting nozzle 423, which is characterized in that: push rod 424 drives sealing plug 425 and makes the motion of keeping away from connecting mouth 423 in pump body 421, hold the volume increase of liquid inner chamber and liquid and get into through interface 422 and hold the liquid inner chamber this moment, push rod 424 drives sealing plug 425 and makes the motion of being close to connecting mouth 423 in pump body 421, hold the volume reduction of liquid inner chamber this moment, because interface 422 and liquid water conservancy diversion system's junction is provided with the check valve, the unable backward flow of fluid leads to holding the pressure increase of liquid inner chamber, hold the liquid of liquid inner chamber and discharge through connecting mouth 423.

As shown in fig. 6, the liquid diversion system 410 includes a first diversion pipe 411, a second diversion pipe 412, a diversion hose 413, and a telescopic diversion pipe 414, wherein one end of the first diversion pipe 411 is connected to the outlet of the three-way pipe, the other end is connected to the connector 422 of the pump 421, one end of the second diversion pipe 412 is connected to the connector 423 of the pump 421, the other end is connected to one end of the diversion hose 413, the other end of the diversion hose 413 is connected to the telescopic diversion pipe 414, the nozzle 430 is connected and communicated with the telescopic guide pipe 414, the first guide pipe 411 is provided with a closing switch 415 for controlling the first guide pipe 411 to switch between a connection state and a closing state, the second fluid guide pipe 412 is provided with a one-way control mechanism for controlling the one-way flow of the liquid from the pump 421 to the spray head 430, the check valve is arranged at the joint of the first guide pipe 411 and the interface 422, and the structure of the check valve is consistent with that of the one-way control mechanism.

As shown in fig. 9, the second duct 412 includes a lower duct 412a and an upper duct 412b, the lower duct 412a is connected to the connection mouth 423 of the pump body 421, the upper duct 412b is sleeved inside the lower duct 412a, and the one-way control mechanism is disposed at the connection position between the lower duct 412a and the upper duct 412 b.

More specifically, a built-in step 412c is arranged in the lower flow guide pipe 412a, a water through hole is formed in the center of the built-in step 412c, the one-way control mechanism comprises a liquid stopping ball 412d and a trigger spring 412e, the liquid stopping ball 412d is arranged above the water through hole and matched with the water through hole, one end of the trigger spring 412e abuts against the liquid stopping ball 412d, the other end of the trigger spring 412e abuts against the upper flow guide pipe 412b, and the elastic force of the trigger spring 412e enables the liquid stopping ball 412d to move close to the water through hole along the axial direction of the lower flow guide pipe 412 a; the process of the unidirectional flow direction of the liquid is characterized in that: when the liquid in the pump 421 enters the lower fluid guide tube 412a, the pressure of the liquid pushes the liquid stop ball 412d and overcomes the elastic contraction of the trigger spring 412e, the liquid stop ball 412d is far away from the water through hole, the liquid can enter the lower fluid guide tube 412a through the water through hole, the trigger spring 412e is in a compressed state, when the liquid in the pump 421 stops entering the lower fluid guide tube 412a, the elastic force of the trigger spring 412e enables the liquid stop ball 412d to move close to the water through hole and form a sealed fit, and the liquid in the lower fluid guide tube 412a cannot flow back.

As shown in fig. 8, the telescopic duct 414 is a telescopic rod-shaped structure formed by sequentially sleeving a plurality of telescopic joints, and the two sleeved telescopic joints can move relatively along the length direction, in this embodiment, three expansion joints are arranged, namely an expansion joint I414 a, an expansion joint II 414b and an expansion joint III 414c, the first telescopic joint 414a and the second telescopic joint 414b are of a cylindrical structure with openings at two ends, the opening at one end of the first telescopic joint 414a is communicated with the guide hose 413, the second telescopic joint 414b is sleeved on the opening at the other end of the first telescopic joint 414a, the telescopic joint three 414c is a cylindrical tube structure with one end open and the other end closed, the telescopic joint three 414c is sleeved inside the telescopic joint two 414b, and the sleeved end of the telescopic joint three 414c is an open end, preferably, the telescopic joint one 414a, the telescopic joint two 414b and the telescopic joint three 414c are respectively connected with a spray head 430 communicated with the inner cavity thereof.

As shown in fig. 1-2 and 10, the number of the above-mentioned spraying range adjusting devices is two and two spraying range adjusting devices are located on the same side of the vehicle body 100 as the respective corresponding liquid spraying devices 400.

The spraying range adjusting device comprises a height adjusting device 500 and a length adjusting device 600, wherein the height adjusting device 500 is used for adjusting the spraying height of the liquid spraying device 400, and the length adjusting device 600 is used for adjusting the horizontal spraying length of the liquid spraying device 400.

As shown in fig. 10 to 11, the height adjustment device 500 includes a first link 510, the first link 510 is connected to the power transmission device, the length adjustment device 600 includes a second link 610, the second link 610 is connected to the power transmission device, and the power transmission device receives the rotational force generated by the rotation of the axle 120 and transmits the rotational force to the first link 510 and the second link 610.

As shown in fig. 3-5, the power transmission device includes a power transmission mechanism 200 and a linkage member 300, wherein the linkage member 300 includes a first linkage member 310 and a second linkage member 320, the first linkage member 310 is connected with the power transmission mechanism 200, the second linkage member 320 is connected with the first linkage member 310, the first link 510 is connected with the first linkage member 310, the second link 610 is connected with the second linkage member 320, the power generated by the rotation of the axle 120 is transmitted to the first linkage member 310 through the power transmission mechanism 200 and transmitted to the first link 510 from the first linkage member 310, and the first linkage member 310 also transmits the power to the second linkage member 320 and transmitted to the second link 610 from the second linkage member 320.

As shown in fig. 3, the power transmission mechanism 200 includes a transmission rotating shaft 210, and a gear transmission mechanism, wherein the transmission rotating shaft 210 is horizontally arranged and the axial direction of the transmission rotating shaft 210 is perpendicular to the axial direction of the axle 120, preferably, the gear transmission mechanism is a helical gear transmission mechanism, the helical gear transmission mechanism includes a driving helical gear 220 and a driven helical gear 230, the driving helical gear 220 is sleeved outside the axle 120, the driven helical gear 230 is sleeved outside the transmission rotating shaft 210, and the driving helical gear 220 is meshed with the driven helical gear 230; the helical gear transmission mechanism is selected to enable the power transmission to reversely deflect by 90 degrees, and the rotating force generated by the rotation of the axle 120 is transmitted to the transmission rotating shaft 210 through the helical gear transmission mechanism and enables the transmission rotating shaft 210 to rotate.

As shown in fig. 4, the first linkage member 310 includes a first rotating disk 311, a first connecting plate 312, a first linkage shaft 313, and a first linkage housing 314, the first linkage housing 314 is a cubic structure, the first linkage housing 314 is provided with a first shaft hole facing the center of the end surface of the transmission rotating shaft 210, the axial direction of the first shaft hole is parallel to the axial direction of the transmission rotating shaft 210, the first linkage shaft 313 is matched with the first shaft hole and the first linkage shaft 313 can rotate around the own axis, the first rotating disk 311 is fixedly connected to the transmission rotating shaft 210 and coaxially arranged, the transmission rotating shaft 210 rotates to drive the first rotating disk 311 to rotate, one end of the first connecting plate 312 is hinged to the first rotating disk 311, the hinged position deviates from the center of the first rotating disk 311, and the hinge axis is parallel to the axial direction of the transmission rotating shaft 210, the other end of the first connecting plate 312 is hinged to the power receiving end of the first linkage shaft 313, the first rotating disk 311 rotates to drive the first connecting plate 312 to deflect and drive the first linking shaft 313 to move.

The first linkage member 310 further comprises a support plate and a guide post 315, the support plate is fixedly mounted on the frame 110 and is located below the first linkage housing 314, the guide post 315 is fixedly mounted on the support plate, the guide direction of the guide post 315 is perpendicular to the ground, a guide hole matched with the guide post 315 is further formed in the first linkage housing 314, the first linkage housing 314 is mounted on the guide post 315 in a matching manner through the guide hole and the guide post 315, the first connection plate 312 deflects to drive the first linkage shaft 313 to move, the first linkage shaft 313 can slide up and down along the guide direction of the guide post 315 and rotate around the axis of the first linkage shaft 313, and the first linkage shaft 313 slides up and down along the guide direction of the guide post 315 to drive the first linkage housing 314 to slide up and down along the guide direction of the guide post 315.

The first connecting rod 510 is fixedly connected with the first linkage housing 314, and when the first linkage housing 314 slides up and down along the guiding direction of the guiding column 315, the first connecting rod 510 can be drawn to move synchronously with the first linkage housing.

As shown in fig. 5, the second linking member 320 includes a second connecting plate 321, a second linking shaft 322, and a second linking housing 323, the second linking housing 323 has a cubic structure, the second linking housing 323 has a second shaft hole facing the center of the end surface of the first linking housing 314, the axial direction of the second shaft hole is parallel to the axial direction of the transmission rotating shaft 210, the second linking shaft 322 is matched with the second shaft hole and the second linking shaft 322 can rotate around its own axis, one end of the second connecting plate 321 is hinged to the power driving end of the first linking shaft 313, the hinge shaft core line is parallel to the axial direction of the transmission rotating shaft 210, the other end is hinged to the power receiving end of the second linking shaft 322 and the hinge shaft core line is parallel to the axial direction of the transmission rotating shaft 210, the first linking shaft 313 drives the second connecting plate 321 to deflect and move the second linking shaft 322, the second linking shaft 322 can move axially along the axle 120 and rotate around, the second linking shaft 322 moves along the axial direction of the axle 120 to drive the second linking shell 323 to move synchronously.

The second connecting rod 610 is fixedly connected with the second linkage housing 323, and when the second linkage housing 323 moves along the axial direction of the axle 120, the second connecting rod 610 can be pulled to move synchronously with the axle.

One end of the push rod 424 is connected with the sealing plug 425, the other end of the push rod 424 is connected with the second linkage housing 323, when the second linkage housing 323 moves along the axial direction of the axle 120, the push rod 424 can be pulled to move synchronously with the axle, and the push rod 424 moves and drives the sealing plug 425 to slide along the extending direction of the inner cavity of the pump body 421.

Preferably, the second linking member 320 further includes a third connecting plate, a second rotating plate 324 and a supporting rotating shaft 325, the supporting rotating shaft 325 is movably mounted on the frame 110 and can rotate around its axis, the supporting rotating shaft 325 and the transmitting rotating shaft 210 are coaxially arranged, the second rotating plate 324 is fixedly connected to the supporting rotating shaft 325 and coaxially arranged, one end of the third connecting plate is hinged to the power driving end of the second linking shaft 322, the core line of the hinge shaft is parallel to the axial direction of the transmitting rotating shaft 210, the other end of the third connecting plate is hinged to the second rotating plate 324, the hinge point deviates from the center of the second rotating plate 324, and the core line of the hinge shaft is parallel to the axial direction of the transmitting rotating shaft 210, the second linking shaft 322 moves to drive the third connecting plate to deflect and rotate the second rotating plate 324, and the second rotating plate.

As shown in fig. 11-15, the height adjustment apparatus 500 further includes a pushing mechanism 520, a sliding member 530, and a main slide rail 540, the main slide rail 540 is mounted on the frame 110, and the guiding direction of the main slide rail 540 is perpendicular to the ground, the telescopic duct 414 is mounted on the sliding member 530, specifically, the telescopic joint one 414a of the telescopic duct 414 is fixedly mounted on the sliding member 530, the sliding member 530 is disposed in the main slide rail 540, the sliding member 530 is matched with the main slide rail 540, and the sliding member 530 can slide along the guiding direction of the main slide rail 540, when the sliding member 530 is displaced along the guiding direction of the main slide rail 540, the telescopic duct 414 can be pulled to move synchronously with it (i.e. the nozzle 430 is pulled to move synchronously with it), the connecting rod one 510 is in contact with the pushing mechanism 520, the pushing mechanism 520 is in contact with the sliding member 530, when the connecting rod one 510 moves, the pushing mechanism 520, thereby moving the sliding member 530 in the guiding direction of the main slide 540 and finally changing the height of the head 430.

As shown in fig. 12, the sliding member 530 includes a lower fixing plate 531 and an upper fixing plate 532, the first telescopic joint 414a is fixedly installed between the lower fixing plate 531 and the upper fixing plate 532, and the lower fixing plate 531 is in contact with the pushing mechanism 520; the pushing mechanism 520 pushes the lower fixing plate 531 to move along the guiding direction of the main slide 540, so that the height of the spraying head 430 changes.

As shown in fig. 12, the pushing mechanism 520 includes a pushing plate 521, the top surface of the pushing plate 521 contacts with the lower fixing plate 531, a plurality of guiding posts 522 are disposed on the surface of the pushing plate 521 facing the first connecting rod 510, the guiding posts 522 are uniformly spaced apart from each other along the height direction of the pushing plate 521, one end of the first connecting rod 510 is fixedly connected to the first linkage housing 314, the other end of the first connecting rod 510 is a pushing end and is located between two adjacent guiding posts 522, and when the first connecting rod 510 moves and pushes the guiding posts 522 to move up and down along the guiding direction of the main sliding rail 540, the pushing plate 521 can be pulled to move synchronously; when the guide column 522 moves upwards along the guiding direction of the guide column 315, the pushing plate 521 pushes the lower fixing plate 531 to slide upwards along the guiding direction of the guide column 315, the spraying height of the spray head 430 is increased, when the guide column 522 moves downwards along the guiding direction of the guide column 315, the pushing plate 521 pushes the lower fixing plate 531 to slide downwards along the guiding direction of the guide column 315, and the spraying height of the spray head 430 is reduced.

As shown in fig. 12 to 15, the height adjustment device 500 further includes a trigger locking mechanism 550 disposed in the main slide rail 540, the motion state of the trigger locking mechanism 550 can be divided into a trigger state and a locking state, when the trigger locking mechanism 550 is in the trigger state, the pushing end of the first connecting rod 510 is located between two adjacent guide posts 552, at this time, the first connecting rod 510 moves and pulls the guide posts 552 to move synchronously with the first connecting rod, when the trigger locking mechanism 550 is in the locking state, the trigger locking mechanism 550 can disengage the pushing end of the first connecting rod 510 from the guide posts 522, and lock the pushing mechanism 520 to keep the height of the pushing mechanism 520 constant, so that the spraying height of the spraying head 430 is fixed.

As shown in fig. 13 to 15, the trigger locking mechanism 550 includes a locking member and a locking housing 553, the locking member is disposed in the locking housing 553, and the height of the pushing mechanism 520 can be locked and maintained by the locking member when the spray head 430 is at the optimal spraying height.

As shown in fig. 14, the locking member includes a connecting rod 551, a locking rod 552, and a plurality of locking holes 541 disposed on the main slide rail 540 and uniformly spaced along the guiding direction of the main slide rail 540, the connecting rod 551 is used to connect the locking rod 552 and the pushing plate 521, the locking rod 552 is matched with the locking holes 541, the locking rod 552 and the locking holes 541 are located on the same straight line parallel to the guiding direction of the main slide rail 540, when the locking rod 552 is located in the locking holes 541, the trigger locking mechanism 550 is in a locking state, and when the locking rod 552 is separated from the locking holes 541, the trigger locking mechanism 550 is in a triggering state.

As shown in fig. 14 to 15, the locking housing 553 is a cylindrical barrel structure with one end open and the other end closed, a sliding slot penetrating the wall thickness is provided on the outer circumferential surface of the locking housing 553, the connecting rod 551 is located in the sliding slot and can slide along the guiding direction of the sliding slot, the sliding slot can be divided into three parts and is respectively a locking slot 553a, a guiding slot 553b and a triggering slot 553c, one end of the guiding slot 553b is communicated with the locking slot 553a, the other end is communicated with the triggering slot 553c, and the guiding slot 553b and the locking slot 553a and the guiding slot 553b and the triggering slot 553c are arranged at an angle, and the guiding slot 553b is used for guiding the connecting rod 551 into the locking slot 553a or the triggering slot 553 c.

More specifically, the locking groove 553a, the first guide groove 553b and the trigger groove 553c are all arc-shaped grooves and form an S-shaped structure, the S-shaped structure enables the connecting rod 551 to smoothly transit to the locking groove 553a or the trigger groove 553c through the first guide groove 553b, a sliding part is arranged between the pushing plate 521 and the lower fixing plate 531, preferably, the sliding part is a trigger slide rail arranged on the pushing plate 521 and a trigger slide block arranged on the lower fixing plate 531 and matched with the trigger slide rail, the guide direction of the trigger slide rail is perpendicular to the guide direction of the main slide rail 540, the pushing plate 521 can move close to or away from the first connecting rod 510 along the guide direction of the trigger slide rail through the cooperation of the trigger slide block and the trigger slide rail, and more optimally, a knob capable of driving the locking housing 553 to rotate; the state switching process of the locking mechanism 550 is triggered by: the knob is rotated and the locking housing 553 is rotated, the connection rod 551 is guided into the locking groove 553a by the first guide groove 553b, in the process, the connecting rod 551 drives the pushing plate 521 to move away from the first link 510, and the pushing end of the first link 510 is separated from the guiding column 522, meanwhile, the connecting rod 551 drives the locking rod 552 to move close to the locking hole 541 and the locking rod 552 is located in the locking hole 541, the trigger locking mechanism 550 is in a locking state, the knob is rotated reversely to rotate the locking housing 553 reversely, the connecting rod 551 is guided into the trigger slot 553c by the first guide slot 553b, the connecting rod 551 drives the pushing plate 521 to move close to the first connecting rod 510 and the pushing end of the first connecting rod 510 is located between the two adjacent guiding studs 522, meanwhile, the connecting rod 551 drives the locking rod 552 to move away from the locking hole 541 and the locking rod 552 is separated from the locking hole 541, so that the trigger locking mechanism 550 is in a trigger state.

As shown in fig. 16-19, the length adjustment device 600 further includes a first gear and rack transmission mechanism 620, a first bevel gear transmission mechanism 630, a second bevel gear transmission mechanism 640, and a second gear and rack transmission mechanism 650, wherein one end of the second connecting rod 610 is fixedly connected to the second linkage housing 323, the other end of the second connecting rod 610 is connected to the first gear and rack transmission mechanism 620, the telescopic duct 414 is connected to the second gear and rack transmission mechanism 650, power generated by the movement of the second connecting rod 610 is transmitted to the telescopic duct 414 through the first gear and rack transmission mechanism 620, the first bevel gear transmission mechanism 630, the second bevel gear transmission mechanism 640, and the second gear and rack transmission mechanism 650, and the telescopic duct 414 extends or contracts under the power, so that the horizontal spraying length of the spraying head 430 changes.

As shown in fig. 16, the first rack-and-pinion transmission mechanism 620 includes a first rack, a first pinion, a first intermediate rotating shaft, and a support frame, wherein an axial direction of the first intermediate rotating shaft is parallel to an axial direction of the transmission rotating shaft 210, an extending direction of the first rack is parallel to an axial direction of the axle 120, the support frame is fixedly mounted on the frame 110, the first rack is movably mounted on the support frame, and a first sliding member is disposed between the first rack and the support frame, preferably, the first sliding member is a first sliding block disposed on the first rack, a first sliding rail disposed on the support frame and matched with the first sliding block, a guiding direction of the first sliding rail is parallel to the axial direction of the axle 120, the first rack can move along the guiding direction of the first sliding rail through cooperation of the first sliding block and the first sliding rail, the pinion is sleeved outside a power input shaft end of the first intermediate rotating shaft and meshed with the first rack, and the first gear rotates to drive the first intermediate rotating shaft to rotate.

The first bevel gear transmission mechanism 630 comprises a bevel gear a, a bevel gear b and a second intermediate rotating shaft, the axial direction of the second intermediate rotating shaft is parallel to the axial direction of the axle 120, the bevel gear a is sleeved outside the power output shaft end of the first intermediate rotating shaft, the bevel gear b is sleeved outside the power input shaft end of the second intermediate rotating shaft and is meshed with the bevel gear a, and the first intermediate rotating shaft rotates and enables the second intermediate rotating shaft to rotate through the bevel gear a and the bevel gear b; bevel gear drive one 630 enables a 90 deflection of the power transmission direction.

The bevel gear transmission mechanism II 640 comprises a bevel gear c, a bevel gear d, a middle rotating shaft III and a middle rotating shaft IV 641, wherein the axial direction of the middle rotating shaft IV 641 is parallel to the guiding direction of the main sliding rail 540, the middle rotating shaft III and the middle rotating shaft II are coaxially arranged, a coupling I is arranged between the middle rotating shaft III and the middle rotating shaft II, the power output shaft end of the middle rotating shaft II is connected with the power input shaft end of the coupling I, the power output shaft end of the coupling I is connected with the power input shaft end of the middle rotating shaft III, the middle rotating shaft II rotates and enables the middle rotating shaft III to rotate through the coupling I, the bevel gear c is sleeved outside the power output shaft end of the middle rotating shaft III, the bevel gear d is sleeved outside the power input shaft end of the middle rotating shaft IV 641 and is meshed with the bevel gear; the second bevel gear 640 can deflect the power transmission direction by 90 degrees.

The second gear rack transmission mechanism 650 comprises a second rack 651, a second gear and a fifth intermediate rotating shaft, the fifth intermediate rotating shaft and the fourth intermediate rotating shaft 641 are coaxially arranged, a second coupler is arranged between the fifth intermediate rotating shaft and the fourth intermediate rotating shaft, a power output shaft end of the fourth intermediate rotating shaft 641 is connected with a power input shaft end of the second coupler, a power output shaft end of the second coupler is connected with a power input shaft end of the fifth intermediate rotating shaft, the fourth intermediate rotating shaft 641 rotates and enables the fifth intermediate rotating shaft to rotate through the second coupler, the second rack 651 is arranged between the upper fixing plate 532 and the lower fixing plate 531, the extending direction of the second rack 651 is parallel to the extending direction of the first rack, a second sliding component is arranged between the second rack 651 and the lower fixing plate 531, preferably, the second sliding component is a second slider arranged on the second rack 651 and a second sliding rail matched with the second rack 531, and the guiding direction of the second, the second rack 651 can move along the guide direction of the second slide rail through the cooperation of the second slide block and the second slide rail, the second rack 651 is fixedly connected with the telescopic guide pipe 414, specifically, the closed end of a telescopic joint third 414c of the telescopic guide pipe 414 is fixedly connected with the power output end part of the second rack 651, the second gear is sleeved outside the power output shaft end of the fifth middle rotating shaft and is meshed with the second rack 651, and the fifth middle rotating shaft rotates to enable the telescopic guide pipe 414 to extend or contract through the second gear and the second rack 651; the extension or contraction process of the telescopic guide pipe 414 is specifically represented as follows: when the second linking shell 323 moves along the axial direction of the axle 120, the second linking shell 610 can be pulled to move synchronously with the first linking shell, when the second linking shell 610 drives the first rack to move close to the transmission rotating shaft 210, the first rack is meshed with the first gear and drives the first intermediate rotating shaft to rotate, the first intermediate rotating shaft rotates and enables the second rack 651 to move close to the transmission rotating shaft 210 through the first bevel gear transmission mechanism 630, the first coupling, the second bevel gear transmission mechanism 640, the second coupling, the fifth intermediate rotating shaft and the second gear, the second rack 651 moves to drive the third telescopic joint 414c to move synchronously, so that the telescopic guide pipe 414 contracts, and when the first rack is driven by the second linking shell 610 to move far from the transmission rotating shaft 210, the second rack 651 moves far from the transmission rotating shaft 210 and drives the third telescopic joint 414c to move synchronously, so that the telescopic guide pipe 414 extends.

As shown in fig. 16 to 19, the length adjustment device 600 further includes a closing mechanism 660, and the closing mechanism 660 is used for switching the bevel gear c and the bevel gear d in the bevel gear transmission mechanism two 640 between an engaged state and a disengaged state; when the bevel gear c and the bevel gear d are in the meshed state, the second rack 651 can drive the telescopic guide pipe 414 to extend or contract, and when the horizontal spraying length of the spray head 430 is in the optimal spraying length, the closing mechanism 660 can enable the bevel gear c and the bevel gear d to be in the disengaged state, so that the second rack 651 cannot drive the telescopic guide pipe 414 to extend or contract, and finally the spraying length of the spray head 430 is fixed.

As shown in fig. 17-19, the above-mentioned closing mechanism 660 includes a movable support 662 and a handle, the bevel gear d is connected with the intermediate rotating shaft four 641 through a connecting member and the bevel gear d can move along the axial direction of the intermediate rotating shaft four 641, preferably, the connecting member is an external spline provided on the intermediate rotating shaft four 641 or an internal spline provided on the bevel gear d, the movable support 662 includes an upper support and a lower support, and the upper support and the lower support are integrated into a whole, the upper support is provided with a first sleeve hole matched with the intermediate rotating shaft four 641, the upper support is movably sleeved outside the intermediate rotating shaft four 641 through the first sleeve hole and is located above the bevel gear d, the lower support is provided with a second sleeve hole matched with the intermediate rotating shaft four 641, the lower support is movably sleeved outside the intermediate rotating shaft four 641 through the second sleeve hole and is located below the bevel gear d, when the movable support 662 is displaced along the axial direction of the intermediate rotating shaft four 641, the handle comprises a rocker 661a and an intermediate rod 661b, one end of the intermediate rod 661b is hinged with the movable support 662 and the axis of the hinge shaft is parallel to the axial direction of the intermediate rotating shaft four 641, the other end is fixedly connected with the rocker 661a, when the rocker 661a is displaced along the axial direction of the intermediate rotating shaft four 641, the movable support 662 can be pulled by the intermediate rod 661b to move synchronously.

As shown in fig. 17 and 19, the closing mechanism 660 further includes a housing 663 having a cubic structure, the bevel gear c, the bevel gear d, a power output shaft end of the third intermediate rotating shaft, and a power input shaft end of the fourth intermediate rotating shaft 641 are all located in the housing 663, the housing 663 is provided with a limit guide groove, the intermediate rod 661b is located in the limit guide groove, the rocker 661a is located outside the housing 663, the limit guide groove is divided into three parts, which are respectively a first limit groove 663a, a second guide groove 663b, and a second limit groove 663c, one end of the second guide groove 663b is communicated with the first limit groove 663a, the other end is communicated with the second limit groove 663c, the second guide groove 663b is used for guiding the intermediate rod 661b to the first limit groove 663a or the second limit groove 663c, when the intermediate rod b is located in the second limit groove 663c, the bevel gear c is engaged with the bevel gear d, when the middle rod 661b is located in the first limit groove 663a, the bevel gear c and the bevel gear d are in a disengaged state.

More specifically, the first limit groove 663a and the second limit groove 663c are horizontally arranged, the first limit groove 663a is positioned above the second limit groove 663c, the second guide groove 663b is vertically arranged, and the first limit groove 663a, the second guide groove 663b and the second limit groove 663c form a Z-shaped structure; the state switching process of the bevel gear c and the bevel gear d is specifically represented as follows: and in the process, the bevel gear d moves close to the bevel gear c until the bevel gear d is meshed with the bevel gear c, the rack II 651 can drive the telescopic guide pipe 414 to extend or contract, when the spray head 430 is in the optimal spraying length, the rocker 661a is moved and the middle rod 661b is guided into the limiting groove I663 a through the guide groove II 663b, in the process, the bevel gear d moves away from the bevel gear c until the bevel gear d is disengaged from the bevel gear c, and the rack II 651 cannot drive the telescopic guide pipe 414 to extend or contract, so that the spraying length of the spray head 430 is fixed.

Spraying apparatus during operation opens closed switch 415, and removal automobile body 100 makes axletree 120 rotate simultaneously, and axletree 120 rotates and produces the revolving force, and this revolving force passes through helical gear transmission mechanism and transmits to transmission pivot 210 and make transmission pivot 210 rotate, and transmission pivot 210 rotates and drives push rod 424 through interlock component 300 and moves, and push rod 424 moves and makes the appearance liquid inner chamber volume of pump body 421 change, and the concrete expression is: the push rod 424 drives the sealing plug 425 to move away from the connecting nozzle 423 in the pump body 421, at this time, the volume of the liquid containing cavity is increased, the liquid in the water tank body flows into the pump body 421 through the three-way pipe, the first flow guide pipe 411 and the connector 422, the push rod 424 drives the sealing plug 425 to move close to the connecting nozzle 423 in the pump body 421, at this time, the volume of the liquid containing cavity is reduced, because the connection part of the interface 422 and the liquid diversion system is provided with the one-way valve, the fluid can not flow back, the pressure intensity of the liquid containing cavity is increased, thereby discharging the liquid in the liquid containing cavity, the liquid in the liquid containing cavity flows into the spray head 430 through the connecting nozzle 423, the second guide pipe 412, the guide hose 413 and the telescopic guide pipe 414, the liquid is sprayed outwards through the spray head 430, since the second fluid guide pipe 412 is provided with the unidirectional control mechanism for controlling the unidirectional flow of the fluid from the pump 421 to the spray head 430, the fluid does not flow back.

The linkage member 300 drives the push rod 424 to move, and the spraying range adjusting device starts to operate, and the operation process of the spraying range adjusting device is divided into a height adjusting process and a horizontal length adjusting process.

The height adjusting process is characterized in that: the linkage member 300 drives the push rod 424 to move, simultaneously, the linkage member 300 also pulls the first link 510 to move synchronously with the same, the knob is rotated and the locking housing 553 rotates, the connecting rod 551 is guided into the triggering slot 553b by the first guide slot 553b, in the process, the connecting rod 551 drives the push plate 521 to move close to the first link 510 and the pushing end of the first link 510 is positioned between the two adjacent guide posts 522, the connecting rod 551 drives the locking rod 552 to move away from the locking hole 541 and the locking rod 552 is separated from the locking hole 541, the triggering locking mechanism 550 is in a triggering state, at the moment, the first link 510 moves and pulls the push plate 521 to move synchronously through the guide posts 315, the push plate 521 pushes the lower fixing plate 531 to move synchronously, thereby changing the height of the spray head 430, when the spray head 430 is at the optimal spraying height 553, the knob is rotated reversely and the locking housing 553 rotates reversely, the connecting rod 551 is guided into the locking slot a by the, in the process, the connecting rod 551 drives the pushing plate 521 to move away from the first connecting rod 510, the pushing end of the first connecting rod 510 is separated from the guiding column 522, meanwhile, the connecting rod 551 drives the locking rod 552 to move close to the locking hole 541, the locking rod 552 is located in the locking hole 541, the locking mechanism 550 is triggered to be in a locking state, and the height of the spray head 430 is not changed and is at the optimal spraying height.

The horizontal length adjusting process is characterized in that: when the linkage member 300 pulls the first connecting rod 510 to move synchronously with the first connecting rod 300, the linkage member 300 also pulls the second connecting rod 610 to move synchronously with the second connecting rod, moves the rocker 661a and leads the middle rod 661b to be guided into the second limiting groove 663c through the second guiding groove 663b, in the process, the bevel gear d moves close to the bevel gear c until the bevel gear d is meshed with the bevel gear c, at the moment, the power generated by the motion of the second connecting rod 610 is transmitted to the telescopic guide pipe 414 through the first gear-rack transmission mechanism 620, the first bevel gear transmission mechanism 630, the second bevel gear transmission mechanism 640 and the second gear-rack transmission mechanism 650, the telescopic guide pipe 414 extends or contracts under the power action, so that the horizontal spraying length of the sprayer 430 changes, when the sprayer 430 is at the optimal horizontal spraying length, the rocker 661a is moved and the middle rod 661b is led into the first limiting groove 663a through the second guiding groove 663b, the bevel gear d moves away from the bevel gear c until the bevel gear d is disengaged from the bevel gear c, the telescopic guide pipe 414 cannot receive the power of the second connecting rod 610, and the length of the spray head 430 is not changed and is at the optimal spraying length.

A method for spraying protective liquid medicines such as insecticide and the like on crops or fruit tree seedlings comprises the following steps:

(I) a liquid spraying process;

s1: opening the closing switch 415 to make the liquid in the water tank body flow into the liquid spraying device 400, and simultaneously moving the vehicle body 100 to make the axle 120 rotate, the axle 120 rotates to generate a rotating force, the liquid spraying device 400 comprises a liquid guiding system 410, a water pump mechanism 420 and a spray head 430, the water pump mechanism 420 comprises a pump body 421, a sealing plug 425 and a push rod 424, the pump body 421 is a cylindrical barrel structure with two open ends, a connecting nozzle 423 communicated with the inner cavity of the pump body 421 is arranged at one opening of the pump body 421, a connector 422 communicated with the inner cavity of the pump body 421 is arranged on the outer circumferential surface of the pump body 421, the sealing plug 425 is arranged in the inner cavity of the pump body 421 and forms a sealed sliding fit, one end of the push rod 424 is connected with the sealing plug 425, the other end of the push rod is connected with a power transmission device, the areas among the sealing plug 425, the inner cavity of, A second guide pipe 412, a guide hose 413 and a telescopic guide pipe 414, wherein one end of the first guide pipe 411 is communicated with the liquid outlet port of the three-way pipe, the other end of the first guide pipe 411 is communicated with a connector 422 of the pump body 421, one end of the second guide pipe 412 is communicated with a connector 423 of the pump body 421, the other end of the second guide pipe is communicated with one end of the guide hose 413, the other end of the guide hose 413 is communicated with the telescopic guide pipe 414, the spray head 430 is communicated with the telescopic guide pipe 414, the first guide pipe 411 is provided with a closed switch 415 for controlling the first guide pipe 411 to be switched between the on state and the closed state, the second guide pipe 412 is provided with a one-way control mechanism for controlling the liquid to flow from the pump body 421 to the spray head 430 in one-way, the joint of the first guide pipe 411 and the connector 422 is provided with a one-way valve for controlling the liquid to flow from the water tank, the power transmission device receives the rotating force generated by the rotation of the axle 120 and transmits the rotating force to the push rod 424, the push rod 424 drives the sealing plug 425 to slide along the extension direction of the inner cavity of the pump body 421 under the action of power, when the push rod 424 drives the sealing plug 425 to move away from the connecting nozzle 423 in the pump body 421, the volume of the inner cavity of the liquid container is increased, the liquid in the water tank body flows into the pump body 421 through the three-way pipe, the first flow guide pipe 411 and the interface 422, when the push rod 424 drives the sealing plug 425 to move close to the connecting nozzle 423 in the pump body 421, the volume of the inner cavity of the liquid container is reduced, because the one-way valve is arranged at the joint of the interface 422 and the liquid guide system, the liquid in the inner cavity of the liquid container cannot flow back, the pressure of the inner cavity of the liquid container is increased, and the liquid in the inner cavity of the liquid container flows into the spray head 430, the liquid is sprayed out through the spray head 430;

(II) adjusting the spraying range;

s2: the power transmission device can also transmit the rotating force to the spraying range adjusting device, the spraying range adjusting device comprises a height adjusting device 500, the height adjusting device 500 comprises a first connecting rod 510, a pushing mechanism 520, a sliding component 530, a main sliding rail 540 and a triggering locking mechanism 550, one end of the first connecting rod 510 is connected with the power transmission device, the power transmission device receives the rotating force generated by the rotation of the axle 120 and transmits the rotating force to the first connecting rod 510, the first connecting rod 510 moves up and down along the guiding direction of the main sliding rail 540 under the action of power, the telescopic guide pipe 414 is arranged on the sliding component 530, the sliding component 530 is contacted with the pushing mechanism 520, the sliding component 530 is matched with the main sliding rail 540, the triggering locking mechanism 550 is rotated to be in a triggering state, at the moment, the other end of the first connecting rod 510 is contacted with the pushing mechanism 520, and the first connecting rod 510 can move to pull the pushing mechanism 520 to move synchronously, the pushing mechanism 520 moves the tractable sliding member 530 to move synchronously with the sliding member 530, the sliding member 530 moves the tractable telescopic guide tube 414 to move synchronously with the telescopic guide tube 414, so that the height of the spray head 430 is changed, when the spray head 430 is at the optimal spraying height, the locking mechanism 550 is rotationally triggered to be in a locking state, at the moment, the first connecting rod 510 is separated from the pushing mechanism 520, and the locking mechanism 550 is triggered to lock and limit the pushing mechanism 520, so that the height of the spray head 430 is fixed, and the spray head 430 is at the optimal spraying height;

s3: the spraying range adjusting device further comprises a length adjusting device 600, the length adjusting device 600 comprises a second connecting rod 610, a first gear-rack transmission mechanism 620, a first bevel gear transmission mechanism 630, a second bevel gear transmission mechanism 640, a second gear-rack transmission mechanism 650 and a closing mechanism 660, one end of the second connecting rod 610 is connected with a power transmission device, the other end of the second connecting rod 610 is connected with the first gear-rack transmission mechanism 620, the power transmission device receives rotating force generated by rotation of the axle 120 and transmits the rotating force to the second connecting rod 650, the second connecting rod 610 moves axially along the axle 120 under the action of power, the telescopic guide pipe 414 is connected with the second gear-rack transmission mechanism 650, the closing mechanism 660 is opened, bevel gears c and d in the second bevel gear transmission mechanism 640 are in a meshed state, and at the moment, the power generated by movement of the second connecting rod 610 passes through the first gear-rack transmission mechanism 620, The first bevel gear transmission mechanism 630, the second bevel gear transmission mechanism 640 and the second rack and pinion transmission mechanism 650 are transmitted to the telescopic guide pipe 414, the telescopic guide pipe 414 extends or contracts under the action of power, so that the horizontal spraying length of the spray head 430 changes, when the spray head 430 is at the optimal horizontal spraying length, the closing mechanism 660 is closed, the bevel gear c in the second bevel gear transmission mechanism 640 is disengaged from the bevel gear d, at the moment, the telescopic guide pipe 414 cannot receive the power of the second connecting rod 610, and the length of the spray head 430 is not changed and is at the optimal spraying length.

The invention has been explained by applying specific examples to the principle and implementation of the invention, which are described in the above

The description is only intended to facilitate an understanding of the method of the invention and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. The special equipment for protecting the crops or the fruit tree seedlings is characterized by comprising a vehicle body, a water tank, a liquid spraying device, a power transmission device and a spraying range adjusting device, wherein the vehicle body generates a rotating force when moving, the rotating force provides spraying power for the liquid spraying device, and meanwhile the rotating force also provides adjusting power for the spraying range adjusting device;

the spraying range adjusting device comprises a height adjusting device and a length adjusting device, the height adjusting device is used for adjusting the spraying height of the liquid spraying device, and the length adjusting device is used for adjusting the horizontal spraying length of the liquid spraying device;

the height adjusting device also comprises a trigger locking mechanism arranged in the main sliding rail, the motion state of the trigger locking mechanism can be divided into a trigger state and a locking state, when the trigger locking mechanism is in the trigger state, the pushing end of the first connecting rod is positioned between the two adjacent guide posts, the first connecting rod moves and pulls the guide posts to synchronously move with the first connecting rod, when the trigger locking mechanism is in the locking state, the trigger locking mechanism can enable the pushing end of the first connecting rod to be separated from the contact with the guide posts, and the pushing mechanism is locked to keep the height of the pushing mechanism unchanged;

foretell trigger locking mechanism includes locking component, locking casing, and locking component sets up in the locking casing, locking component include connecting rod, check lock lever, a plurality of set up on the main slide rail and be the locking hole of even interval distribution along main slide rail direction, the connecting rod is used for connecting check lock lever and slurcam, check lock lever and locking hole phase-match and check lock lever and locking hole are located the same straight line that is on a parallel with main slide rail direction.

2. The special equipment for protecting crops or fruit tree seedlings as claimed in claim 1, wherein the vehicle body comprises a vehicle frame and an axle, the water tank, the liquid spraying device, the power transmission device and the spraying range adjusting device are all arranged on the vehicle frame, and the axle rotates and generates rotating force when the vehicle body moves.

3. Special equipment for protection of crops or fruit trees seedlings according to claim 1, the length adjusting device comprises a second connecting rod, a first gear rack transmission mechanism, a first bevel gear transmission mechanism, a second bevel gear transmission mechanism and a second gear rack transmission mechanism, one end of the second connecting rod is connected with the power transmission device, the other end of the second connecting rod is connected with the first gear rack transmission mechanism, the power transmission device receives rotating force generated by rotation of the axle and transmits the rotating force to the second connecting rod, the second connecting rod moves along the axial direction of the axle under the action of power, the telescopic guide pipe is connected with the gear rack transmission mechanism II, power generated by the motion of the connecting rod II is transmitted to the telescopic guide pipe through the gear rack transmission mechanism I, the bevel gear transmission mechanism II and the gear rack transmission mechanism II, and the telescopic guide pipe extends or contracts under the action of the power.

4. The special equipment for protecting crops or fruit tree seedlings as claimed in claim 3, wherein the first gear-rack transmission mechanism comprises a first rack, a first gear, a first intermediate rotating shaft and a support frame, the first intermediate rotating shaft is horizontally arranged, the axial direction of the first intermediate rotating shaft is perpendicular to the axial direction of the axle, the extending direction of the first rack is parallel to the axial direction of the axle, the support frame is fixedly arranged on the frame, the first rack is movably arranged on the support frame, a first sliding component is arranged between the first rack and the support frame, the first sliding component is a first sliding block arranged on the first rack and a first sliding rail arranged on the support frame and matched with the first sliding block, the guiding direction of the first sliding rail is parallel to the axial direction of the axle, the first rack can move along the guiding direction of the first sliding rail by matching the first sliding block and the first sliding rail, and the gear is sleeved outside the power input shaft, the second connecting rod is fixedly connected with the first rack, and can pull the first racks to synchronously move when moving and enable the first gear to rotate, and the first gear rotates to drive the first intermediate rotating shaft to rotate;

5. A special equipment for protecting seedlings of crops or fruit trees as claimed in claim 3, wherein said length adjusting device further comprises a closing mechanism for switching between engaging state and disengaging state of bevel gear c and bevel gear d in bevel gear transmission mechanism II;

the closing mechanism comprises a movable support and a handle, the movable support comprises an upper support and a lower support, the upper support and the lower support are of an integrated structure, the upper support is provided with a first sleeve hole matched with a fourth middle rotating shaft, the upper support is movably sleeved outside the fourth middle rotating shaft through the first sleeve hole and is positioned above a bevel gear d, the lower support is provided with a second sleeve hole matched with the fourth middle rotating shaft, the lower support is movably sleeved outside the fourth middle rotating shaft through the second sleeve hole and is positioned below the bevel gear d, when the movable support displaces along the axial direction of the fourth middle rotating shaft, the bevel gear b can be pulled to move synchronously with the movable support, the handle comprises a rocker and a middle rod, one end of the middle rod is hinged with the movable support, a hinge axis core line formed by the hinged position of the middle rod and the movable support is parallel to the axial direction of the fourth middle rotating shaft, and the other end of the middle rod is fixedly connected with the rocker, when the rocker is displaced along the axial direction of the middle rotating shaft IV, the movable support can be pulled to synchronously move through the middle rod;

6. The special equipment for protecting crops or fruit tree seedlings as claimed in any one of claims 1 to 5, wherein the liquid spraying device further comprises a liquid diversion system and a water pump mechanism, the liquid diversion system is used for conveying the liquid in the water tank to the water pump mechanism, the water pump mechanism is used for conveying the liquid to the spray head, and the spray head is used for spraying the liquid outwards;

7. The special equipment for protecting crops or fruit trees and young seedlings as claimed in claim 6, wherein the power transmission device comprises a power transmission mechanism and a linkage member, the linkage member comprises a first linkage member and a second linkage member, the first linkage member is connected with the power transmission mechanism, the second linkage member is connected with the first linkage member, the first connecting rod is connected with the first linkage member, the second connecting rod is connected with the second linkage member, the power generated by the rotation of the axle is transmitted to the first linkage member through the power transmission mechanism and is transmitted to the first connecting rod through the first linkage member, and the first linkage member also transmits the power to the second linkage member and is transmitted to the second connecting rod through the second linkage member;

the linkage member I comprises a first rotating disc, a first connecting plate, a first linkage shaft and a first linkage shell, the first linkage shell is of a cubic structure, a first shaft hole is formed in the center of the end face, facing the transmission rotating shaft, of the first linkage shell, the axial direction of the first shaft hole is parallel to the axial direction of the transmission rotating shaft, the first linkage shaft is matched with the first shaft hole and can rotate around the axis of the first linkage shaft, the first rotating disc is fixedly connected with the transmission rotating shaft and is coaxially arranged with the transmission rotating shaft, the transmission rotating shaft rotates to drive the first rotating disc to rotate, one end of the first connecting plate is hinged with the first rotating disc, the hinged part of the first connecting plate deviates from the circle center of the first rotating disc, a hinged shaft core line formed at the hinged part of the first connecting plate and the first rotating disc is parallel to the axial direction of the transmission rotating shaft, the other end of the first connecting plate is hinged with the power receiving end of, one rotation of the turntable drives the connecting plate I to deflect and enables the linkage shaft I to move;

the linkage component II comprises a connecting plate II, a linkage shaft II and a linkage shell II, the linkage shell II is of a cubic structure, a shaft hole II is arranged at the center of the end surface of the linkage shell II facing to the linkage shell I, the axial direction of the shaft hole II is parallel to the axial direction of the transmission rotating shaft, the linkage shaft II is matched with the shaft hole II and can rotate around the axis of the linkage shaft II, one end of the connecting plate II is hinged with the power driving end of the linkage shaft I, a hinge shaft core wire formed at the position where the connecting plate II is hinged with the linkage shaft I is parallel to the axial direction of the transmission rotating shaft, the other end of the connecting plate II is hinged with the power receiving end of the linkage shaft II, a hinge shaft core wire formed at the position where the connecting plate II is hinged with the linkage shaft II is parallel to the axial direction of the transmission rotating shaft, the linkage shaft I drives the connecting plate II to deflect, The linkage shaft II moves along the axial direction of the axle to drive the linkage shell II to do synchronous motion;

8. The special equipment for protecting crops or fruit trees and young seedlings as claimed in claim 7, wherein the number of the liquid spraying devices is two and the two liquid spraying devices are respectively arranged at one side of the vehicle body, the water tank comprises a water tank body and a three-way pipe, the water tank body is used for storing liquid to be sprayed, the three-way pipe comprises two liquid outlet ports and one liquid inlet port, the first flow guide pipes of the two liquid spraying devices are respectively connected with one liquid outlet port of the three-way pipe, the water tank body is connected with the liquid inlet port of the three-way pipe, and the liquid in the water tank body respectively enters the liquid spraying devices at two sides of the vehicle body through the three-way pipe.