Traction type air-assisted spraying machine

Abstract

The utility model belongs to the technical field of agriculture and forestry machinery, and particularly relates to a traction type air-assisted spraying machine which comprises a frame, a rear driving wheel mechanism installed on the rear side of the frame, a front steering wheel mechanism installed on the front side of the frame and a traction frame. An engine, a gearbox, a plunger pump and an air supply spraying device which is arranged on the rear side of the frame and is communicated with an outlet of the plunger pump are fixed on the frame; an output shaft of the engine is provided with an engine belt wheel, an input shaft of the gearbox is provided with a gearbox belt wheel, an input shaft of the plunger pump is provided with a plunger pump belt wheel, and a transmission shaft of the air supply spraying device is provided with a fan main shaft belt wheel. Transmission belts are respectively arranged between the engine belt wheel and the gearbox belt wheel, between the fan main shaft belt wheel and the plunger pump belt wheel, between the engine belt wheel and the fan main shaft belt wheel or between the engine belt wheel and the plunger pump belt wheel; the problems that an existing manual traction type spraying machine is inconvenient to operate and high in labor intensity are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of forestry machinery technology, especially relates to a traction type air-sending spraying machine. BACKGROUND

[0002] The spraying machine is the main mechanical equipment for spraying pesticide and nutrient solution, the pesticide or nutrient solution in the box is pumped out through the plunger pump and is sprayed through the spray head connected to the plunger pump, in order to enhance the spraying effect, the fan is additionally arranged, and the spraying range of the spray head is increased through the wind power generated by the fan.

[0003] At present, the pesticide and nutrient solution are mainly sprayed by the manpower traction type spraying machine in the orchard and the greenhouse due to the size of the operation space, the operation is inconvenient, and the labor intensity is relatively large. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a traction type air-sending spraying machine, and aims at solving the problems of the inconvenient operation and the large labor intensity of the existing manpower traction type spraying machine.

[0005] The utility model discloses a traction type air sending sprayer, traction type air sending sprayer includes frame, installs rear drive wheel mechanism in the rear side of frame, installs front steering wheel mechanism in the front side of frame and traction frame, still fixed with engine on the frame, the gearbox for transmitting the power of engine to rear drive wheel mechanism, plunger pump, the box body that communicates with the import of plunger pump and set up in the rear side of frame and communicate with the export of plunger pump air sending sprayer, the output shaft of engine is equipped with engine pulley, the input shaft of gearbox is equipped with gearbox pulley, the input shaft of plunger pump is equipped with plunger pump pulley, the transmission shaft of air sending sprayer is equipped with fan main shaft pulley, between engine pulley and gearbox pulley, between fan main shaft pulley and plunger pump pulley, between engine pulley and fan main shaft pulley or between engine pulley and plunger pump pulley is equipped with transmission belt respectively, still includes the travel clutch control mechanism for the transmission belt between engine pulley and gearbox pulley and the transmission belt between engine pulley and fan main shaft pulley or engine pulley and plunger pump pulley are used for the tensioning, the spray clutch control mechanism, the travel clutch control mechanism, the spray clutch control mechanism respectively includes rotary support, the press roll of rotary installation in rotary support, the handle of rotary installation in traction frame and the clutch pull line between rotary support and handle, the first end of clutch pull line is fixed in traction frame close to the second end of rotary support and is fixed in frame, still includes clutch connecting frame that the core line of first end of clutch pull line fixed connection, the arc connecting arm between clutch connecting frame and handle, the first end of arc connecting arm is hinged with clutch connecting frame, the second end is hinged with handle, when handle rotates, through arc connecting arm, clutch connecting frame, clutch pull line pulls rotary support to rotate, makes the press roll press the transmission belt to tension the transmission belt, the second end of arc connecting arm is rotated to the side that the pivot of handle is away from clutch connecting frame by handle pulling, and makes the hinged place between handle and the second end of arc connecting arm, the pivot of handle, the hinged place between clutch connecting frame and the first end of arc connecting arm is arranged collinearly to realize self-locking.

[0006] As an improvement, the core line between the second end of the clutch pull line and the rotary support is provided with an elastic buffer.

[0007] As an improvement, a belt blocking frame is provided at the engine pulley, a walking belt pulley arc-shaped baffle extending in the circumferential direction is provided at the gearbox pulley, and a fan main shaft pulley arc-shaped baffle extending in the circumferential direction is provided at the fan main shaft pulley.

[0008] As an improvement, a mounting plate fixed to the engine or the frame is arranged at the engine pulley, and a clutch mounting shaft fixed to the mounting plate is arranged at the side of the engine pulley, and the rotating support of the walking clutch control mechanism and the rotating support of the spraying clutch control mechanism are respectively rotatably mounted on the clutch mounting shaft.

[0009] As an improvement, the front steering wheel mechanism comprises a mounting frame arranged at the middle of the front side of the frame, a swivel support arranged between the mounting frame and the frame, and a steering wheel rotatably mounted on the mounting frame, and an acute angle α is arranged between the axial direction of the swivel support and the vertical direction, or the axial direction of the swivel support is arranged along the vertical direction.

[0010] As an improvement, the traction frame is rotatably mounted on the mounting frame along the front-rear direction of the frame, and an elastic tensile structure is arranged between the traction frame and the mounting frame.

[0011] As an improvement, the traction frame comprises a support column, a load plate fixed to the upper end of the support column, and a holding crossbar fixed to the side of the load plate away from the support column, and the lower end of the support column is rotatably mounted on the mounting frame, and the handle of the walking clutch control mechanism and the handle of the spraying clutch control mechanism are respectively rotatably mounted on the load plate.

[0012] As an improvement, the load plate comprises a main plate body, a bottom side plate fixed to the bottom edge of the main plate body, and a first side plate and a second side plate respectively fixed to the opposite sides of the main plate body, the support column is fixedly connected with the bottom side plate, the holding crossbar is fixedly connected with the first side plate and the second side plate away from the bottom side plate, and the first end of the clutch tensile wire is fixed to the bottom side plate; a handle mounting shaft is fixed between the first side plate and the second side plate, two clutch elongated holes are arranged side by side on the main plate body, and the handle of the walking clutch control mechanism and the handle of the spraying clutch control mechanism are respectively rotatably mounted on the handle mounting shaft and pass through the clutch elongated hole corresponding to the side.

[0013] As an improvement, the rear drive wheel mechanism comprises a drive axle fixed at the bottom of the rear side of the frame, walking wheels respectively installed at both ends of the drive axle, and brake structures between both ends of the drive axle and the wheel hubs of the corresponding side walking wheels; the traction type air-assisted sprayer further comprises a brake clutch control mechanism, which comprises a rotating shaft rotatably installed at the bottom of the frame, swing arms respectively fixed at both ends of the rotating shaft, and pull rods respectively connected between each swing arm and the brake structure of the corresponding side walking wheel, both ends of the pull rod being hingedly connected with the swing arm and the input end of the brake structure; further comprising a brake handle rotatably installed on the main plate body, a brake pull wire provided between the brake handle and the swing arm on one side, a first end of the brake pull wire being fixed to the traction frame and a second end thereof being fixed to the frame, a core wire at the first end of the brake pull wire being fixed with a brake connecting frame hinged to the brake handle, a brake elongated hole being provided on the first side plate or the second side plate, a limiting slot being provided at one end of the brake elongated hole, and the brake handle extending out of the carrier plate through the brake elongated hole.

[0014] As an improvement, the air-assisted sprayer device comprises a fan, a baffle provided at a distance from the air outlet of the fan, and a plurality of spray heads provided between the air outlet of the fan and the baffle, the plurality of spray heads being arranged at intervals in a ring direction and coaxially arranged with the transmission shaft and the fan; the fan comprises a blade group fixed to the transmission shaft and an annular housing arranged around the blade group, and a position adjusting structure is provided between the rear side of the frame and the annular housing.

[0015] The position adjusting structure comprises a vertical plate fixed to the rear side of the frame, two lateral adjusting elongated holes being provided at intervals at opposite sides of the vertical plate; a support plate fixed to the lower side of the vertical plate, two threaded holes being provided at intervals on the support plate; a connecting plate fixed to the lower side of the annular housing, a vertical adjusting elongated hole being provided at each of the opposite sides of the connecting plate corresponding to each of the lateral adjusting elongated holes, and a bolt and nut assembly being threaded between the corresponding vertical adjusting elongated hole and the lateral adjusting elongated hole; further comprising a top plate fixed to the side of the connecting plate away from the annular housing, and an adjusting bolt provided corresponding to the threaded hole, the end of the adjusting bolt passing through the threaded hole being topped on the top plate.

[0016] The traction type air-sending spraying machine comprises a vehicle frame, a rear driving wheel mechanism installed at the rear side of the vehicle frame, a front steering wheel mechanism installed at the front side of the vehicle frame, a traction frame, an engine fixed on the vehicle frame, a gearbox for transmitting the power of the engine to the rear driving wheel mechanism, a plunger pump, a box body communicated with the inlet of the plunger pump and an air-sending spraying device arranged at the rear side of the vehicle frame and communicated with the outlet of the plunger pump, an engine belt wheel installed on the output shaft of the engine, a gearbox belt wheel installed on the input shaft of the gearbox, a plunger pump belt wheel installed on the input shaft of the plunger pump and a fan main shaft belt wheel installed on the transmission shaft of the air-sending spraying device, a transmission belt arranged between the engine belt wheel and the gearbox belt wheel, between the fan main shaft belt wheel and the plunger pump belt wheel, between the engine belt wheel and the fan main shaft belt wheel or between the engine belt wheel and the plunger pump belt wheel, a walking clutch control mechanism for tensioning the transmission belt between the engine belt wheel and the gearbox belt wheel, a spraying clutch control mechanism for tensioning the transmission belt between the engine belt wheel and the fan main shaft belt wheel or between the engine belt wheel and the plunger pump belt wheel, a rotating support, a compression roller rotatably installed on the rotating support, a handle rotatably installed on the traction frame and a clutch pull line arranged between the rotating support and the handle, the first end of the clutch pull line close to the traction frame is fixed on the traction frame and the second end of the clutch pull line close to the rotating support is fixed on the vehicle frame, a clutch connecting frame fixedly connected with the core line of the first end of the clutch pull line, an arc-shaped connecting arm arranged between the clutch connecting frame and the handle, the first end of the arc-shaped connecting arm is hinged with the clutch connecting frame and the second end of the arc-shaped connecting arm is hinged with the handle, when the handle rotates, the rotating support is pulled to rotate through the arc-shaped connecting arm, the clutch connecting frame and the clutch pull line, the compression roller is pressed to tension the transmission belt, the second end of the arc-shaped connecting arm is pulled to rotate to the side of the rotating shaft of the handle away from the clutch connecting frame, the hinged position between the handle and the second end of the arc-shaped connecting arm, the rotating shaft of the handle and the hinged position between the clutch connecting frame and the first end of the arc-shaped connecting arm are arranged in a straight line to realize self-locking.

[0017] In use, the power of the engine is transmitted to the rear driving wheel mechanism to drive the traction type air-sending spraying machine to run without manpower, when the traction type air-sending spraying machine turns during running, the front steering wheel mechanism and the traction frame are arranged at the front side of the vehicle frame, the traction frame is slightly pulled in the rotating direction to realize turning, the labor intensity is reduced, the handle of the walking clutch control mechanism is used to control the traction type air-sending spraying machine to run or stop, the spraying clutch control mechanism is used to control the air-sending spraying device and the plunger pump to work to realize spraying or stop spraying, the operation is convenient, the traction type air-sending spraying machine solves the problems of inconvenient operation and high labor intensity of the existing manpower traction type spraying machine. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1It is the three-dimensional structure schematic view of the traction type air-sending spraying machine of the utility model;

[0019] Figure 2 It is the side view structure schematic view of the traction type air-sending spraying machine of the utility model;

[0020] Figure 3 It is the three-dimensional structure schematic view of the traction type air-sending spraying machine of the utility model's running clutch control mechanism, spraying clutch control mechanism (one);

[0021] Figure 4 It is the three-dimensional structure schematic view of the traction type air-sending spraying machine of the utility model's running clutch control mechanism, spraying clutch control mechanism (two);

[0022] Figure 5 It is the rear view structure schematic view of the traction type air-sending spraying machine of the utility model;

[0023] Figure 6 It is Figure 5 The enlarged structure schematic view of A place in the middle;

[0024] Figure 7 It is the side view structure schematic view of the traction type air-sending spraying machine of the utility model's traction frame retracted state;

[0025] Wherein, 11, car frame;111, vertical board;112, support plate;113, transverse adjustment long hole;12, drive axle;13, running wheel;14, gearbox;15, drive connecting rod;16, mounting frame;17, steering wheel;18, slewing support;19, gearbox pulley;20, traction frame;21, support column;22, load plate;221, clutch long hole;222, brake long hole;223, limit clamping groove;23, holding cross bar;24, traction ring;30, engine;31, first pulley;32, second pulley;40, plunger pump;41, plunger pump pulley;42, box;50, fan;51, transmission shaft;52, fan main shaft pulley;53, blade group;54, annular shell;55, connecting plate;551, vertical adjustment long hole;56, top plate;57, adjusting bolt;58, locking nut;61, wind shield;62, spray head;63, arc pipe body;70a, running clutch control mechanism;70b, spraying clutch control mechanism;71, rotating support;72, compression roller;73, handle;74, clutch pull wire;75, clutch connecting frame;76, arc connecting arm;77, elastic buffer;78, handle mounting shaft;81, belt blocking frame;82, running belt pulley arc baffle;83, fan main shaft pulley arc baffle;84, mounting plate;85, clutch mounting shaft;90, brake handle;91, brake pull wire;92, brake connecting frame;93, rotating shaft;94, swing arm;95, pull rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0027] Figures 1 to 7 is the structure diagram of the traction type air delivery spraying machine of the utility model, wherein, Figure 1 shows the three-dimensional structure diagram of the traction type air delivery spraying machine of the utility model, Figure 2 shows the side view structure diagram of the traction type air delivery spraying machine of the utility model, Figure 3 shows the three-dimensional structure diagram (one) of the traction type air delivery spraying machine of the utility model, Figure 4 shows the three-dimensional structure diagram (two) of the traction type air delivery spraying machine of the utility model, Figure 5 shows the rear view structure diagram of the traction type air delivery spraying machine of the utility model, Figure 6 shows Figure 5 the enlarged structure diagram of A in the traction type air delivery spraying machine of the utility model, Figure 7 shows the side view structure diagram of the traction frame folding state of the traction type air delivery spraying machine of the utility model. In order to facilitate the description, only the parts related to the utility model are shown in the drawing.

[0028] It should be noted that if the directionality indication (such as up, down, front, back, etc.) involved in the utility model is only used to explain the relative position relationship between the components in a certain posture, if the certain posture changes, the directionality indication also changes accordingly; if the description of "first", "second" and the like is involved in the utility model, the description of "first", "second" and the like is only used for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0029] by Figures 1 to 7The utility model discloses a traction type air conveying spraying machine, which comprises a frame 11, a rear drive wheel mechanism installed at the rear side of the frame 11, a front steering wheel mechanism installed at the front side of the frame 11, and a traction frame 20. An engine 30, a gearbox 14 for transmitting power of the engine 30 to the rear drive wheel mechanism, a plunger pump 40, a box body 42 communicated with the inlet of the plunger pump 40, and an air conveying spraying device arranged at the rear side of the frame 11 and communicated with the outlet of the plunger pump 40 are further fixed on the frame 11. An engine belt pulley is installed on the output shaft of the engine 30, a gearbox belt pulley 19 is installed on the input shaft of the gearbox 14, a plunger pump belt pulley 41 is installed on the input shaft of the plunger pump 40, and a fan main shaft belt pulley 52 is installed on the transmission shaft 51 of the air conveying spraying device. Transmission belts are arranged between the engine belt pulley and the gearbox belt pulley 19, between the fan main shaft belt pulley 52 and the plunger pump belt pulley 41, between the engine belt pulley and the fan main shaft belt pulley 52, or between the engine belt pulley and the plunger pump belt pulley 41. The traction type air conveying spraying machine further comprises a walking clutch control mechanism 70a for tensioning the transmission belt between the engine belt pulley and the gearbox belt pulley 19, and a spraying clutch control mechanism 70b for tensioning the transmission belt between the engine belt pulley and the fan main shaft belt pulley 52 or between the engine belt pulley and the plunger pump belt pulley 41. The walking clutch control mechanism 70a and the spraying clutch control mechanism 70b each comprise a rotating support 71, a compression roller 72 rotatably installed on the rotating support 71, a handle 73 rotatably installed on the traction frame 20, and a clutch pull wire 74 arranged between the rotating support 71 and the handle 73. The first end of the clutch pull wire 74 close to the traction frame 20 is fixed to the traction frame 20, and the second end of the clutch pull wire 74 close to the rotating support 71 is fixed to the frame 11. The traction type air conveying spraying machine further comprises a clutch connecting frame 75 fixedly connected with the core wire of the first end of the clutch pull wire 74, and an arc-shaped connecting arm 76 arranged between the clutch connecting frame 75 and the handle 73. The first end of the arc-shaped connecting arm 76 is hingedly connected with the clutch connecting frame 75, and the second end of the arc-shaped connecting arm 76 is hingedly connected with the handle 73. When the handle 73 rotates, the rotating support 71 is pulled to rotate through the arc-shaped connecting arm 76, the clutch connecting frame 75, and the clutch pull wire 74, so that the compression roller 72 compresses the transmission belt to tension the transmission belt. When the second end of the arc-shaped connecting arm 76 is pulled to rotate to the side away from the clutch connecting frame 75 of the rotating shaft of the handle 73, the hinged connection between the handle 73 and the second end of the arc-shaped connecting arm 76, the rotating shaft of the handle 73, and the hinged connection between the clutch connecting frame 75 and the first end of the arc-shaped connecting arm 76 are arranged in a straight line to achieve self-locking.

[0030] Generally, the engine 30 and the plunger pump 40 are arranged between the box body 42 and the front side of the frame 11. Correspondingly, a hollow passage is arranged on the box body 42 for the transmission shaft 51 to pass through.

[0031] Specifically, the frame 11 is fixed with a starter for starting the engine; when the engine is a diesel engine or a gasoline engine, an oil tank is fixed on the engine or the frame 11; when the engine is an electric motor, a battery pack is fixed on the frame 11. The above structure is a known technology, and its structure will not be described here.

[0032] In use, the power of the engine can drive the traction type air-assisted sprayer to move through the transmission to the rear drive wheel mechanism, without the need for manual pulling. When the traction type air-assisted sprayer is turning during movement, the front turning wheel mechanism and the traction frame 20 are arranged on the front side of the frame 11, so that the operator can achieve turning by slightly pulling the traction frame 20 in the turning direction, thereby reducing the labor intensity. The operator can control the traction type air-assisted sprayer to move or stop through the handle of the walking clutch control mechanism 70a, and control the air-assisted spraying device and the plunger pump 40 to work or stop spraying through the spraying clutch control mechanism 70b, thereby achieving convenient operation. The traction type air-assisted sprayer solves the problems of inconvenient operation and high labor intensity of the existing manual traction type sprayer.

[0033] In the utility model, in order to avoid damaging the walking clutch control mechanism 70a and the spraying clutch control mechanism 70b, and to avoid the pressing force of the pressing roller 72 of the walking clutch control mechanism 70a and the pressing roller 72 of the spraying clutch control mechanism 70b being too large on the transmission belt, the elastic buffer 77 is arranged between the core wire of the clutch pull wire 74 close to the second end of the rotating support 71 and the rotating support 71, which can play a buffering role.

[0034] Specifically, the elastic buffer 77 is a spring.

[0035] Since the engine 30 and the plunger pump 40 are arranged side by side on the frame 11, and the air-assisted spraying device is arranged on the rear side of the frame 11, the transmission shaft 51 of the air-assisted spraying device is located at the middle part of the frame 11, in order to avoid the transmission belt being too long, the transmission belt is arranged between the engine pulley and the fan main shaft pulley 52, the fan main shaft pulley 52 is driven to rotate by the engine pulley, and the plunger pump pulley 41 is driven to rotate by the fan main shaft pulley 52, so that the plunger pump 40 and the air-assisted spraying device can be ensured to start working synchronously.

[0036] In the utility model, in order to avoid the transmission belt between the engine pulley and the transmission belt of the gearbox pulley 19 and the transmission belt between the engine pulley and the fan main shaft pulley 52 from falling off, the belt blocking frame 81 is arranged at the engine pulley, the walking pulley arc-shaped baffle 82 extending in the circumferential direction is arranged at the gearbox pulley 19, and the fan main shaft pulley arc-shaped baffle 83 extending in the circumferential direction is arranged at the fan main shaft pulley 52.

[0037] In order to facilitate installation, the engine pulley is provided with a mounting plate 84 fixed to the engine 30 or the frame 11, the belt guard frame 81 is fixed to the mounting plate 84, and the walking pulley arc-shaped guard plate 82 and the fan main shaft pulley arc-shaped guard plate 83 are mounted to the frame 11 through the fixing support.

[0038] As shown in Figure 3 and Figure 4 The engine pulley is provided with a clutch mounting shaft 85 fixed to the mounting plate 84 at the side of the engine pulley, and the rotating support 71 of the walking clutch control mechanism 70a and the rotating support 71 of the spraying clutch control mechanism 70b are respectively rotatably mounted to the clutch mounting shaft 85, which can effectively reduce the occupied space and facilitate the wiring of the clutch pull wire 74 of the walking clutch control mechanism 70a and the clutch pull wire 74 of the spraying clutch control mechanism 70b.

[0039] Specifically, the engine pulley comprises coaxially arranged first pulley 31 and second pulley 32, transmission belts are arranged between the first pulley 31 and the gearbox pulley 19, and transmission belts are arranged between the second pulley 32 and the fan main shaft pulley 52. The outer diameter of the first pulley 31 and the second pulley 32 and the number of V-shaped grooves can be selected as needed.

[0040] In the utility model, the front steering wheel mechanism comprises a mounting frame 16 arranged at the middle of the front side of the frame 11, a rotary support 18 arranged between the mounting frame 16 and the frame 11 and a steering wheel 17 rotatably mounted to the mounting frame 16. An acute angle α is arranged between the axial direction of the rotary support 18 and the vertical direction. Preferably, the acute angle α is greater than or equal to 10 degrees and less than or equal to 30 degrees. Of course, the axial direction of the rotary support 18 can also be arranged along the vertical direction. Since the front steering wheel mechanism is arranged at the middle of the front side of the frame 11 and rotatably mounted to the frame 11 through the rotary support 18, the steering angle can be increased, and steering in a narrow space can be realized.

[0041] In order to facilitate more labor-saving during steering, the traction frame 20 is mounted to the mounting frame 16. During steering, the pulling force of the traction frame 20 can directly act on the front steering wheel mechanism, and the front steering wheel mechanism can be steered conveniently.

[0042] Generally, the traction frame 20 is rotatably mounted to the mounting frame 16 along the front-rear direction of the frame 11, and an elastic stretching structure is arranged between the traction frame 20 and the mounting frame 16. During use, the operator rotates the traction frame 20 forwardly, and during non-use, the traction frame 20 is rotated rearwardly. Under the action of the elastic force of the elastic stretching structure, the traction frame 20 can be kept in the state after being rotated rearwardly, and the traction frame 20 can be prevented from shaking, as shown in Figure 7 Generally, the elastic stretching structure is a spring, and of course, an elastic rope can also be arranged.

[0043] In the utility model, the traction frame 20 includes the support column 21, the load plate 22 fixed at the upper end of the support column 21 and the holding crossbar 23 fixed at the side of the load plate 22 away from the support column 21, the lower end of the support column 21 is rotatably installed on the mounting frame 16, the handle 73 of the walking clutch control mechanism 70a and the handle 73 of the spraying clutch control mechanism 70b are rotatably installed on the load plate 22 respectively.

[0044] Specifically, as shown in Figure 3 The load plate 22 includes the main plate body, the bottom side plate fixed at the bottom edge of the main plate body and the first side plate and the second side plate fixed at the opposite sides of the main plate body respectively, the support column 21 is fixedly connected with the bottom side plate, the holding crossbar 23 is fixedly connected with the first side plate and the second side plate away from the bottom side plate respectively, and the clutch pull wire 74 is fixed to the bottom side plate close to the first end of the traction frame 20. Usually, the load plate 22 is formed by cutting and bending a plate body, and of course, can be formed by welding.

[0045] In order to facilitate installation, the handle mounting shaft 78 is fixed between the first side plate and the second side plate, and the two clutch elongated holes 221 are arranged side by side on the main plate body, and the handle 73 of the walking clutch control mechanism 70a and the handle 73 of the spraying clutch control mechanism 70b are rotatably installed on the handle mounting shaft 78 and pass through the clutch elongated hole 221 on the corresponding side.

[0046] In the use process, since the advancing speed of the traction type air-assisted sprayer is relatively slow, in order to facilitate the rapid transportation of the traction type air-assisted sprayer to the work site, usually, it is necessary to be towed by an electric tricycle or the like, in order to facilitate the towing, the traction ring 24 is arranged at the upper end of the traction frame 20, and the towing after connection is facilitated.

[0047] In the utility model, the air-assisted sprayer device includes the fan 50, the wind shield 61 arranged at the air outlet of the fan 50 and the plurality of spray heads 62 arranged between the air outlet of the fan 50 and the wind shield 61, the plurality of spray heads 62 are arranged along the annular direction and are coaxially arranged with the transmission shaft 51 and the fan 50.

[0048] Specifically, the fan 50 includes the blade group 53 fixed to the transmission shaft 51 and the annular shell 54 arranged around the blade group 53, and the annular shell 54 is fixed to the frame 11.

[0049] In order to facilitate the guarantee of the coaxiality between the annular shell 54 and the blade group 53 and the transmission shaft 51, the position adjusting structure is arranged between the rear side of the frame 11 and the annular shell 54, which is used for adjusting the coaxiality and can improve the spraying effect.

[0050] As Figure 5 And Figure 6As shown, the position adjusting structure comprises a vertical plate 111 fixed to the rear side of the vehicle frame 11, two lateral adjusting long holes 113 are arranged at opposite sides of the vertical plate 111; a support plate 112 fixed to the lower side of the vertical plate 111, two threaded holes are arranged on the support plate 112; a connecting plate 55 fixed to the lower side of the annular shell 54, vertical adjusting long holes 551 are arranged at opposite sides of the connecting plate 55 corresponding to each lateral adjusting long hole 113, and bolt-nut assemblies are arranged between the corresponding vertical adjusting long holes 551 and the lateral adjusting long holes 113; the position adjusting structure further comprises a top plate 56 fixed to the side of the connecting plate 55 away from the annular shell 54, adjusting bolts 57 arranged corresponding to the threaded holes, and the end of the adjusting bolts 57 passing through the threaded holes is on the top plate 56. In order to prevent the position of the annular shell 54 from changing after adjustment, locking nuts 58 are arranged on each adjusting bolt 57, and after the position of the annular shell 54 is adjusted, the bolt-nut assemblies arranged between the corresponding vertical adjusting long holes 551 and the lateral adjusting long holes 113 are tightened, and then the locking nuts 58 are tightened, so that the adjusting bolts 57 are prevented from loosening.

[0051] Generally, as shown, Figure 1 In order to facilitate installation and ensure the spraying capacity of the nozzles 62, arc-shaped pipe bodies 63 are arranged at opposite sides of the air outlet of the fan 50, the two arc-shaped pipe bodies 63 are coaxially arranged with the transmission shaft 51, the upper end of the arc-shaped pipe body 63 is arranged as a closed end, the lower end is arranged as an open end, and the open ends of the two arc-shaped pipe bodies 63 are respectively communicated with the two outlets of the plunger pump 40; a plurality of nozzles 62 are respectively arranged at intervals in each arc-shaped pipe body 63.

[0052] In the utility model, the traction type air-sending spraying machine further comprises a brake clutch control mechanism, and parking can be performed during driving.

[0053] Specifically, the rear driving wheel mechanism comprises a drive axle 12 fixed to the bottom of the rear side of the vehicle frame 11, walking wheels 13 respectively mounted at the two end portions of the drive axle 12, brake structures arranged between the two end portions of the drive axle 12 and the hubs of the walking wheels 13 on the corresponding sides, and a driving connecting rod 15 connected between the output shaft of the gearbox 14 and the input shaft of the drive axle 12. The specific structure and mounting mode of the brake structure and the driving connecting rod 15 are known technologies, and will not be described here. Generally, the brake structure of the utility model is a tension type friction brake structure.

[0054] The brake clutch control mechanism comprises a rotating shaft 93 rotatably installed at the bottom of the frame 11, swing arms 94 fixed at the two ends of the rotating shaft 93 respectively, pull rods 95 respectively connected between each swing arm 94 and the brake structure of the corresponding walking wheel 13, and the two ends of the pull rod 95 are hingedly connected with the swing arm 94 and the input end of the brake structure respectively; further comprising a brake handle 90 rotatably installed on the main plate body, a brake pull wire 91 arranged between the brake handle 90 and one swing arm 94, the brake pull wire 91 being fixed to the traction frame 20 near the first end of the traction frame 20 and fixed to the frame 11 near the rotating shaft 93, a hinge connecting frame 92 being fixed to the core wire of the first end of the brake pull wire 91 and hingedly connected to the brake handle 90, a brake long hole 222 being arranged on the first side plate or the second side plate, a limiting clamping groove 223 being arranged at one end of the brake long hole 222, and the brake handle 90 extending out of the carrier plate 22 through the brake long hole 222. During normal travel, the brake handle 90 is located at one end of the brake long hole 222 away from the limiting clamping groove 223, during braking, the brake handle 90 is rotated along the brake long hole 222 to the side close to the limiting clamping groove 223, the brake structure can be pulled to brake by the brake connecting frame 92, the brake pull wire 91, the swing arm 94 and the pull rod 95, so as to realize parking, after parking, the brake handle 90 is clamped into the limiting clamping groove 223, so that the traction type wind-sending spraying machine can be kept in the parking state.

[0055] The above only describes some embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A towed air blast sprayer characterized by, The utility model provides a kind of agricultural tractor, including frame, rear drive wheel mechanism installed in the rear side of the frame, front steering wheel mechanism installed in the front side of the frame and traction frame, engine is further fixed on the frame, gearbox for transmitting the power of the engine to the rear drive wheel mechanism, plunger pump, tank body communicated with the import of the plunger pump and air blast sprayer device are set in the rear side of the frame and are communicated with the export of the plunger pump, the output shaft of the engine is installed with engine pulley, the input shaft of the gearbox is installed with gearbox pulley, the input shaft of the plunger pump is installed with plunger pump pulley, the transmission shaft of the air blast sprayer device is installed with fan main shaft pulley, transmission belt is respectively provided between the engine pulley and the gearbox pulley, between the fan main shaft pulley and the plunger pump pulley, between the engine pulley and the fan main shaft pulley or between the engine pulley and the plunger pump pulley, further including travel off clutch control mechanism for tensioning the transmission belt between the engine pulley and the gearbox pulley, spray off clutch control mechanism for tensioning the transmission belt between the engine pulley and the fan main shaft pulley or the engine pulley and the plunger pump pulley; The travel off clutch control mechanism, the spray off clutch control mechanism respectively include rotating support, pressure roller rotationally installed on the rotating support, handle rotationally installed on the traction frame and clutch pull wire arranged between the rotating support and the handle, the first end of the clutch pull wire is fixed to the traction frame, the second end is fixed to the frame, further including clutch connecting frame fixedly connected with the core wire of the first end of the clutch pull wire, arc-shaped connecting arm arranged between the clutch connecting frame and the handle, the first end of the arc-shaped connecting arm is hinged with the clutch connecting frame, the second end is hinged with the handle, when the handle rotates, the rotating support is pulled to rotate through the arc-shaped connecting arm, the clutch connecting frame and the clutch pull wire, the pressure roller is pressed to tighten the transmission belt, the second end of the arc-shaped connecting arm is pulled to rotate to the side of the handle shaft away from the clutch connecting frame, and the hinge between the handle and the second end of the arc-shaped connecting arm, the handle shaft and the hinge between the clutch connecting frame and the first end of the arc-shaped connecting arm are arranged in a straight line to realize self-locking.

2. The trailed, pneumatic sprayer of claim 1, wherein, The elastic buffer is arranged between the core wire of the second end of the clutch pull wire and the rotating support.

3. The trailed, pneumatic sprayer of claim 1, wherein, The belt stopping frame is arranged at the engine pulley, the travel belt pulley arc-shaped baffle extending in the circumferential direction is arranged at the gearbox pulley, and the fan main shaft pulley arc-shaped baffle extending in the circumferential direction is arranged at the fan main shaft pulley.

4. The trailed, pneumatic sprayer of claim 1, wherein, The mounting plate fixed to the engine or the frame is arranged corresponding to the engine pulley, the clutch mounting shaft fixed to the mounting plate is arranged at the side of the engine pulley, and the rotating support of the travel off clutch control mechanism and the rotating support of the spray off clutch control mechanism are rotationally installed on the clutch mounting shaft respectively.

5. The trailed, pneumatic sprayer of any of claims 1-4, wherein, The front steering wheel mechanism comprises a mounting frame arranged at the middle of the front side of the vehicle frame, a rotary support arranged between the mounting frame and the vehicle frame, and a steering wheel rotatably mounted on the mounting frame, wherein an acute angle α is arranged between the axial direction of the rotary support and the vertical direction, or the axial direction of the rotary support is arranged along the vertical direction.

6. The trailed, pneumatic sprayer of claim 5, wherein, The traction frame is rotatably mounted on the mounting frame along the front-rear direction of the vehicle frame, and an elastic tensile structure is arranged between the traction frame and the mounting frame.

7. The trailed, pneumatic sprayer of claim 5, wherein, The traction frame comprises a support column, a load plate fixed to the upper end of the support column, and a holding crossbar fixed to the side of the load plate away from the support column, wherein the lower end of the support column is rotatably mounted on the mounting frame, and the handle of the walking clutch control mechanism and the handle of the spraying clutch control mechanism are respectively rotatably mounted on the load plate.

8. The trailed, pneumatic sprayer of claim 7, wherein, The load plate comprises a main plate body, a bottom side plate fixed to the bottom edge of the main plate body, and a first side plate and a second side plate respectively fixed to the opposite sides of the main plate body, wherein the support column is fixedly connected with the bottom side plate, the holding crossbar is fixedly connected with the first side plate and the second side plate away from the bottom side plate, and the first end of the clutch pull wire is fixed to the bottom side plate; a handle mounting shaft is fixed between the first side plate and the second side plate, two clutch elongated holes are arranged side by side on the main plate body, and the handle of the walking clutch control mechanism and the handle of the spraying clutch control mechanism are respectively rotatably mounted on the handle mounting shaft and pass through the clutch elongated hole on the corresponding side.

9. The trailed, pneumatic sprayer of claim 8, wherein, The rear driving wheel mechanism comprises a drive axle fixed to the bottom of the rear side of the vehicle frame, and walking wheels respectively mounted on the two end portions of the drive axle, wherein brake structures are arranged between the two end portions of the drive axle and the hubs of the corresponding side walking wheels; the traction type air-sending spraying machine further comprises a brake clutch control mechanism, which comprises a rotating shaft rotatably mounted on the bottom of the vehicle frame, swing arms respectively fixed to the two end portions of the rotating shaft, and pull rods respectively connected between each swing arm and the brake structure of the corresponding side walking wheel, wherein the two ends of the pull rod are respectively hinged to the swing arm and the input end of the brake structure; the brake clutch control mechanism further comprises a brake handle rotatably mounted on the main plate body, and a brake pull wire arranged between the brake handle and the swing arm on one side, wherein the first end of the brake pull wire is fixed to the traction frame and the second end close to the rotating shaft is fixed to the vehicle frame, a brake connecting frame hinged to the brake handle is fixed on the core wire of the first end of the brake pull wire, a brake elongated hole is arranged on the first side plate or the second side plate, a limiting clamping groove is arranged at one end portion of the brake elongated hole, and the brake handle extends out of the load plate through the brake elongated hole.

10. The trailed, pneumatic sprayer of claim 1, wherein, The air-blast spraying device comprises a fan, a wind baffle arranged at an interval from an air outlet of the fan, and a plurality of spray heads arranged between the air outlet of the fan and the wind baffle, the plurality of spray heads being arranged at an interval along a ring direction and coaxially arranged with the transmission shaft and the fan; the fan comprises a blade group fixed to the transmission shaft and a ring-shaped shell arranged around the blade group, and a position adjusting structure is arranged between the rear side of the vehicle frame and the ring-shaped shell; The position adjusting structure comprises a vertical plate fixed to the rear side of the vehicle frame, two lateral adjusting long holes arranged at an interval at opposite sides of the vertical plate, a support plate fixed to a lower side of the vertical plate, two screw holes arranged at an interval on the support plate, a connecting plate fixed to a lower side of the ring-shaped shell, vertical adjusting long holes arranged at opposite sides of the connecting plate and corresponding to each of the lateral adjusting long holes, and a bolt and nut assembly penetrating between the corresponding vertical adjusting long hole and the lateral adjusting long hole, and further comprising a top plate fixed to a side of the connecting plate away from the ring-shaped shell and an adjusting bolt arranged corresponding to the screw hole, the end of the adjusting bolt penetrating through the screw hole and abutting against the top plate.

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