Tree whitening device and tree whitening machine

Abstract

The invention discloses a tree whitening device and a tree whitening machine, and relates to the technical field of garden greening equipment. The tree whitening device comprises a lifting frame, a main arm is provided on the upper part of the frame, an air knife and a plurality of nozzles are provided on the inner wall of a movable arm below the main arm, the main arm is connected to the movable arm through a lifting mechanism, and a cloth is provided between the main arm and the movable arm; the tree whitening machine is dragged to any work place by a vehicle-mounted mobile device, and the main arm and the movable arm of the split structure can wrap the tree; the air knife connected to the high-pressure gas generator is used to remove dust from the surface of the tree, and the nozzle connected to the pumping mechanism is used to whiten the tree, and the cloth that plays a shielding role can prevent dust and paint from splashing everywhere during dust removal and spraying; the lifting and lowering of the whitening device can be realized by a lifting rod, and it is convenient to store. The invention can prevent trees from being burned, frozen and damaged by pests and diseases, and improve the quality and speed of tree whitening.

Description

Technical Field

[0001] The invention relates to the technical field of gardening equipment, and in particular to a tree whitening device and a tree whitening machine. Background Art

[0002] Trees are one of the elements we depend on for survival. Traditionally, whitewashing trees is to prevent them from being damaged by pests and diseases. Traditional practices are labor-intensive, labor-intensive, time-consuming, of poor quality, and cause serious pollution. With the deepening of ecological civilization construction, people's awareness of loving and cherishing trees has become the norm. Greening is a landscape element in the road environment, and whitewashing trees is the palette of this element.

[0003] At present, traditional tree whitening machines have technical problems such as single design, small adaptability and poor operation quality. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tree whitening device and a tree whitening machine in view of the deficiencies of the above-mentioned prior art, which can effectively improve work efficiency and enhance the quality of whitening.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A tree whitewashing device comprises a lifting frame, wherein a main arm is provided on the upper part of the frame, a movable arm is provided below the main arm, the main arm is connected to the movable arm via a lifting mechanism, and both the main arm and the movable arm are split structures capable of wrapping trees; a cloth for enclosing trees is provided between the main arm and the movable arm; an air knife connected to a high-pressure gas generator and a plurality of nozzles connected to a pumping mechanism are provided on the inner wall of the movable arm.

[0007] Preferably, the frame includes a lifting rod and a support frame, the lower end of the fixed part of the lifting rod is hinged to the support frame, the upper end of the fixed part of the lifting rod is connected to the support frame through an oblique push-pull rod, the top of the telescopic part of the lifting rod is provided with a fixed base connected to the main support arm, and an angle adjustment rod is provided between the fixed base and the telescopic part of the lifting rod.

[0008] Preferably, an upper transverse hydraulic push-pull device is provided on the fixed base, the main support arm includes a first main arm and a second main arm, the first main arm and the second main arm are semicircular arcs opposite to each other; the two free ends of the upper transverse hydraulic push-pull device are respectively connected to one end of the first main arm and the second main arm, and the other ends of the first main arm and the second main arm are arranged opposite to each other; the lifting mechanism includes a reel, a traction rope and a motor for driving the reel, the reel is two and is respectively arranged between the two ends of the first main arm and the second main arm, the first main arm and the second main arm are both provided with a pulley matched with the traction rope, one end of the traction rope is connected to the reel, and the motor is arranged on the fixed base; the upper end of the apron is connected to the first main arm and the second main arm;

[0009] The movable support arm includes a first movable arm and a second movable arm, the first movable arm and the second movable arm are semicircular arcs opposite to each other, one end of the first movable arm and the second movable arm are respectively connected to the two free ends of the lower horizontal hydraulic push-pull device, and the other ends of the first movable arm and the second movable arm are arranged opposite to each other; the lower horizontal hydraulic push-pull device is arranged on a movable base; the movable base is arranged below a fixed base, the first movable arm and the second movable arm correspond to the first main arm and the second main arm respectively; the air knife and multiple nozzles are all arranged on the inner side walls of the first movable arm and the second movable arm; the lower end of the enclosure is connected to the first movable arm and the second movable arm; the other end of the traction rope is connected to the first movable arm and the second movable arm; the air knife and the nozzle are both arranged on the inner side of the first movable arm and the second movable arm; there are multiple air knives, and the multiple air knives and nozzles are all arranged at intervals on the inner walls of the first movable arm and the second movable arm.

[0010] Preferably, the nozzle is a fan-shaped nozzle; the air knife is a fan-shaped air outlet, and the air outlet of the air knife is inclined upward at an angle α of 20°.

[0011] Preferably, pressure strips for fixing the cloth are respectively provided on the outer sides of the upper and lower ends of the cloth, the upper pressure strip is connected to the first main arm and the second main arm, and the lower pressure strip is fixed on the cloth bracket, and the cloth bracket is fixedly arranged on the outer sides of the first movable arm and the second movable arm; the traction rope is arranged on the inner side of the cloth.

[0012] Preferably, it also includes a return air device, which includes a return air duct and a filter. The return air duct is connected to the main support arm, and the filter is arranged at the air inlet of the return air duct. The air inlet of the return air duct is obliquely downward toward the inner side of the main support arm; the return air duct is connected to the dust removal equipment.

[0013] Preferably, a level measuring instrument is also provided on the fixed base.

[0014] Preferably, the oblique push-pull rod, the lifting rod and the angle adjustment rod are all single-rod hydraulic cylinders, and the upper transverse hydraulic push-pull device and the lower transverse hydraulic push-pull device are all double-rod hydraulic cylinders.

[0015] A tree whitening machine comprises a vehicle-mounted mobile device and the above-mentioned tree whitening device, the support frame comprises a horizontal connecting frame and an upright support, the upright support is a frame structure, comprising columns on both sides and a crossbeam between the two columns; the lower end of the fixed part of the lifting rod is rotatably connected to the bottom crossbeam, and the upper end of the fixed part of the lifting rod is rotatably connected to the middle and upper crossbeam through an oblique push-pull rod; the rear end of the horizontal connecting frame is connected to the front wheel end main beam of the front end of the vehicle-mounted mobile device, the front end of the horizontal connecting frame is rotatably connected to the bottom of one side column, and the middle part of the horizontal connecting frame is rotatably connected to the crossbeam at the bottom of the other side column through a telescopic rod.

[0016] Preferably, the vehicle-mounted mobile device is a small tractor; the high-pressure gas generator, pumping mechanism and return air device are all driven by the power components of the tractor, and the compressor assembly, pumping mechanism and dust removal equipment are all arranged on a bracket at the rear wheel end of the small tractor.

[0017] The beneficial effects of adopting the above technical solution are as follows: compared with the prior art, the present invention installs a main arm on the upper part of the lifting frame, and the main arm is connected to the lower movable arm through a lifting mechanism. The main arm and the movable arm of the split structure can wrap the tree; the air knife connected to the high-pressure gas can remove dust from the surface of the tree, and the tree can be whitewashed by using a nozzle connected to the pumping mechanism; at the same time, the cloth between the main arm and the movable arm plays a shielding role, avoiding dust and paint splashing everywhere during dust removal and spraying, and ensuring that the surrounding working environment is clean and pollution-free. The present invention has a simple and compact structure, convenient and fast operation, and can be towed to any work site via a vehicle-mounted mobile device. The present invention can not only prevent trees from being burned, frozen, cracked, and damaged by pests and diseases, but also improve the quality and speed of tree whitewashing, reduce labor input, and significantly reduce the cost of tree whitewashing by reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a tree whitening device provided by an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Left view of;

[0020] Figure 3 yes Figure 1 A top view of

[0021] Figure 4 yes Figure 1 Schematic diagram of the connection between the middle main arm and the mobile arm;

[0022] Figure 5 yes Figure 3 Schematic diagram of the connection between the middle main arm and the reel

[0023] Figure 6 It is a structural schematic diagram of the movable support arm in the present invention;

[0024] In the figure: 1-main arm, 11-first main arm, 12-second main arm; 2-movable arm, 21-first movable arm, 22-second movable arm; 3-cloth; 4-air knife; 5-sprinkler; 6-lifting rod, 61-fixed part, 62-movable part; 7-support frame, 71-horizontal connecting frame, 72-vertical support, 73-telescopic rod; 8-oblique push-pull rod; 9-fixed base; 10-angle adjustment rod; 13-upper horizontal hydraulic push-pull device; 14-reel; 15-traction rope; 16-motor; 17-pulley; 18-reel; 19-lower horizontal hydraulic push-pull device; 20-movable base; 26-cloth support. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution in the embodiments of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] like Figure 1-4 As shown, a tree whitening device provided by the present invention comprises a lifting frame, a main arm 1 is provided on the upper part of the frame, a movable arm 2 is provided below the main arm 1, the main arm 1 is connected to the movable arm 2 through a lifting mechanism, and both the main arm 1 and the movable arm 2 are split structures that can wrap trees; a cloth 3 for enclosing trees is provided between the main arm 1 and the movable arm 2; an air knife 4 connected to a high-pressure gas generator and a plurality of nozzles 5 connected to a pumping mechanism are provided on the inner wall of the movable arm 2.

[0027] like Figure 1 , 2 As shown, the frame includes a lifting rod 6 and a support frame 7, the lower end of the fixed part 61 of the lifting rod 6 is hinged to the support frame 7, the upper end of the fixed part 61 of the lifting rod 6 is connected to the support frame 7 through an oblique push-pull rod 8, and the top of the telescopic part 62 of the lifting rod 6 is provided with a fixed base 9 connected to the main support arm 1, and an angle adjustment rod 10 is provided between the fixed base 9 and the telescopic part 62 of the lifting rod 6.

[0028] like Figure 4-6As shown, an upper transverse hydraulic push-pull device 13 is provided on the fixed base 9, and the main support arm 1 includes a first main arm 11 and a second main arm 12, and the first main arm 11 and the second main arm 12 are semicircular arcs opposite to each other; the two free ends of the upper transverse hydraulic push-pull device 13 are respectively connected to one end of the first main arm 11 and the second main arm 12, and the other ends of the first main arm 11 and the second main arm 12 are arranged opposite to each other; the lifting mechanism includes a reel 14, a traction rope 15 and a motor 16 for driving the reel 14, and the reel 14 is two and is respectively arranged between the two ends of the first main arm 11 and the second main arm 12, and the first main arm 11 and the second main arm 12 are both provided with a pulley 17 that cooperates with the traction rope 15, one end of the traction rope 15 is connected to the reel 14, and the motor 16 is arranged on the fixed base 9; the upper end of the apron 3 is connected to the first main arm 11 and the second main arm 12.

[0029] In addition, multiple reels 18 are installed on the two reels respectively, and the mobile arm and the cloth can be evenly raised and lowered through the traction rope and the pulleys evenly arranged along the edge of the main arm. The number of reels and pulleys can be selected according to the specific size of the main arm and the mobile arm.

[0030] The movable support arm 2 includes a first movable arm 21 and a second movable arm 22. The first movable arm 21 and the second movable arm 22 are semicircular arcs opposite to each other. One end of the first movable arm 21 and the second movable arm 22 are respectively connected to the two free ends of the lower transverse hydraulic push-pull device 19, and the other ends of the first movable arm 21 and the second movable arm 22 are arranged opposite to each other. The lower transverse hydraulic push-pull device 19 is arranged on a movable base 20. The movable base 20 is arranged below the fixed base 13. The first movable arm 21 and the second movable arm 22 are respectively connected to the first main arm 1 1 and the second main arm 12; the air knife 4 and the plurality of nozzles 5 are all arranged on the inner side walls of the first moving arm 21 and the second moving arm 22; the lower end of the cloth 3 is connected to the cloth bracket 26 on the first moving arm 21 and the second moving arm 22; the other end of the traction rope 15 is connected to the first moving arm 21 and the second moving arm 22; the air knife 4 and the nozzles 5 are all arranged on the inner side of the first moving arm 21 and the second moving arm 22; there are multiple air knives 4, and the multiple air knives 4 and the nozzles 5 are arranged at intervals on the inner walls of the first moving arm 21 and the second moving arm 22. The traction rope 15 adopts a steel wire rope; a fixing clamp fixedly connected to the traction rope is installed on the first moving arm 21 and the second moving arm 22, and the position of the fixing clamp corresponds to the pulley on the main support arm. Among them, the number of air knives and nozzles can be selected according to actual needs.

[0031] The air knife is connected to the air outlet pipe bracket through a fixing clamp, and a bracket for fixing the air knife is provided on the air outlet pipe bracket, and the air outlet pipe bracket is connected to the movable arm. The air knife and the air outlet pipe connected to the air knife are available in the market. The air outlet pipe is preferably a commonly used pressure hose, and the air outlet is preferably a fan-shaped short-handled wide air knife, which is fixedly connected to the air outlet pipe bracket.

[0032] In a specific embodiment of the present invention, Figure 6 As shown, the nozzle 5 is a stainless steel fan-shaped nozzle, and a short-handled adjustable fan-shaped stainless steel nozzle can be selected; the air knife is a fan-shaped air outlet, and the air outlet of the air knife 4 is inclined upward at an angle α of 20°, and the air outlet is inclined upward by 20 degrees, and the blown-off bark or dust settles in the dust removal cloth.

[0033] In a specific embodiment, multiple nozzles are installed on the feed pipe of the pumping pipeline, and 8 nozzles are installed on the feed pipes of the first movable arm 21 and the second movable arm 22, respectively, and the spraying angle is adjusted. The number of nozzles to be opened can be selected according to the thickness of the tree. When the tree's breast diameter is less than 30 cm, the tree can be whitewashed by adjusting the control valve to open 4 narrow fan-width nozzles (evenly distributed on the feed pipes of the first movable arm 21 and the second movable arm 22), and the preferred working pressure is 4 kg; when the tree's breast diameter is 30 to 70 cm, the tree can be whitewashed by adjusting the control valve to open 8 wide fan-width nozzles (evenly distributed on the feed pipes of the first movable arm 21 and the second movable arm 22), and the preferred working pressure is 3 kg; when the tree's breast diameter is 70 to 100 cm, the tree can be whitewashed by adjusting the control valve to open 4 ultra-wide fan-width nozzles (evenly distributed on the feed pipes of the first movable arm 21 and the second movable arm 22), and the preferred working pressure is 6 kg. At the same time, 8 wide fan-width nozzles are opened to whitewash the tree (dual-path whitewashing works simultaneously).

[0034] To further optimize the above technical solution, the outer sides of the upper and lower ends of the cloth 3 are respectively provided with pressure strips (not shown in the figure) for fixing the cloth 3, the upper pressure strip is connected to the first main arm 11 and the second main arm 12, and the lower pressure strip is fixed to the cloth bracket 26, and the cloth bracket 26 is fixedly arranged on the outer sides of the first movable arm 21 and the second movable arm 22, such as Figure 6As shown; the traction rope 15 is arranged on the inner side of the cloth 3. The pressure strip can be fixed to the cloth bracket by screws. The cloth bracket is an arc shape concentric with the movable arm, and the radius of the cloth bracket is 10 cm larger than the radius of the movable arm. The pressure strip is used to fix the cloth to avoid the outer bulging deformation of the cloth during the air knife dust removal process. During the specific production, the cloth is made of lightweight waterproof canvas, which is a kind of waterproof plastic-coated cloth. The cloth is fan-shaped, and the length of the inner and outer arc edges of the fan-shaped cloth is greater than the outer circle of the main arm and the movable arm; the height of the fan-shaped cloth is 1.5 to 2.8 meters, preferably 2.3 meters, the inner arc edge of the upper end of the cloth is fixedly installed on the outer circle of the main arm, and the outer arc edge of the lower end of the cloth can be installed on the outer circle of the movable support bracket of the cloth to prevent the splash of white coating liquid from causing environmental pollution.

[0035] In the specific design, the oblique push-pull rod 8, the lifting rod 6 and the angle adjustment rod 10 are all single-rod hydraulic cylinders, and the upper transverse hydraulic push-pull device 13 and the lower transverse hydraulic push-pull device 19 are all double-rod hydraulic cylinders. With the help of the horizontally installed upper transverse hydraulic push-pull device 13 and the lower transverse hydraulic push-pull device 19, the first main arm 11 and the second main arm 12, the first movable arm 21 and the second movable arm 22 and the cloth can be opened at the same time. The main arm, the movable arm and the dust removal cloth can be opened or closed at the same time, and the size of the opening angle can be adjusted.

[0036] In a specific embodiment of the present invention, a return air device is also included, the return air device includes a return air duct and a filter net, the return air duct is connected to the main arm 1 through a C-shaped fixing clamp, the return air duct and the main arm 1 are arranged in the C-shaped fixing clamp, and the return air duct is correspondingly arranged on the opening side of the C-shaped fixing clamp; the filter net is arranged at the air inlet of the return air duct, and the air inlet of the return air duct is obliquely downward toward the inner side of the main arm 1; the return air duct is connected to a dust removal device. The dust removal device can be arranged on a vehicle-mounted mobile device. Among them, the return air duct can be made of a 6.3 cm metal pipe, and the installation position of the return air duct and its opening and the installation of the filter net are not limited to those shown in the figure. The return air duct can be the same circle and diameter as the two main arms, installed on the two main arms, and the opening is obliquely downward and a filter net is installed at the opening end. The dust and air particles generated during the air knife blowing the trees enter the return air device system for filtration, are filtered by the filter net, and are discharged after being processed by the dust removal equipment to avoid pollution to the outside world.

[0037] To further optimize the above technical solution, a level measuring instrument is further provided on the fixed base 9. The level measuring instrument is an electronic level for construction, and the whitewashing height is determined by radiating a horizontal line from the level measuring instrument. The level measuring instrument can be fixedly mounted on the fixed base 13.

[0038] Of course, during the specific production, the cross-sectional shape of the main support arm and the movable support arm is not limited to the tubular shape shown in the figure, and a circular arc plate with a rectangular cross-section can also be used. The air knife and the feed pipe can be fixed to the movable support arm by a strap, a clamp or other connecting parts. The cloth is also provided with openings at the openings of the first main arm and the second main arm, and the first movable arm and the second movable arm, and magnets are installed on the edges of both sides of the openings to facilitate the automatic adsorption of the main support arm and the movable support arm when they are closed.

[0039] The present invention also provides a tree whitening machine, comprising a vehicle-mounted mobile device (not shown) and the tree whitening device, such as Figure 1-3 As shown, the support frame 7 includes a horizontal connecting frame 71 and a vertical support 72. The vertical support 72 is a frame structure, including two side columns 721 and a crossbeam 722 between the two columns; the lower end of the fixed part 61 of the lifting rod 6 is rotatably connected to the bottom crossbeam 722, and the upper end of the fixed part 61 of the lifting rod 6 is rotatably connected to the middle and upper crossbeam 722 through an oblique push-pull rod 8; the rear end of the horizontal connecting frame 71 is connected to the main beam at the front wheel end of the vehicle-mounted mobile device, the front end of the horizontal connecting frame 71 is rotatably connected to the bottom of one side column 721 through a vertical shaft, and the middle part of the horizontal connecting frame 71 is rotatably connected to the crossbeam 722 at the bottom of the other side column 721 through a telescopic rod 73. Among them, the lifting rod, the oblique push-pull rod and the telescopic rod are all hydraulic push-pull rods, and electrical, gas and liquid pipeline installation holes are reserved at the frame of the support frame. The height and rotation angle of the tree whitening device are supported and adjusted by the support frame; the horizontal connecting frame is composed of two parallel connecting rods and a cross bar, the front ends of the two connecting rods are fixed on the cross bar in parallel, and the rear ends are connected to the main beam at the front wheel end of the vehicle-mounted mobile device. When the vehicle-mounted mobile device approaches the shoulder of the road, the vertical bracket can be driven to rotate by driving the telescopic rod, and the tree whitening device installed on the vertical bracket can be brought close to the tree, so that the angle and distance between the tree whitening device and the tree can be adjusted without the vehicle-mounted mobile device climbing onto the shoulder of the road.

[0040] In a specific embodiment of the present invention, the vehicle-mounted mobile device is a small tractor (not shown in the figure); the high-pressure gas generator (not shown in the figure) includes a compressor assembly, a compressed gas storage tank and a gas pipeline with a control valve, and the gas pipeline is sequentially connected to the compressor assembly, the compressed gas storage tank and the air knife 4; the pumping mechanism (not shown in the figure) includes a liquid storage tank, a hydraulic pump and an intermediate pressure tank, and the feed pipe with a control valve is sequentially connected to the liquid storage tank, the hydraulic pump, the intermediate pressure tank and the nozzle 5; the high-pressure gas generator, the pumping mechanism and the return air device are all driven by the power components of the tractor, and the small tractor provides a power source for the compressor assembly, the diaphragm pump and the dust removal equipment. The compressor assembly and the compressed gas storage tank, the liquid storage tank for the whitening liquid, the diaphragm pump and the intermediate pressure tank and the dust removal equipment are installed at the rear wheel end of the small tractor. The small tractor should preferably be a "Greenhouse King" type tractor, which has the advantages of small size, large load capacity, and flexible mobility. It can adapt to various terrains and has the equipment characteristics of carrying all whitewashing devices and being able to install a compressor assembly, compressed gas storage tank, liquid storage tank, diaphragm pump and intermediate pressure tank at its rear wheel end.

[0041] The working process is as follows:

[0042] The tractor transports the tree whitening device to the work site, adjusts the main arm and the mobile arm to the predetermined whitening position through the support frame and the lifting rod, drives the main arm, the mobile arm and the dust-removing cloth to open and close to embrace the tree, and the motor drives the reel to rotate through the wire rope to drive the mobile arm and the dust-removing cloth to move between the upper and lower stop points of the tree;

[0043] The movable arm and the dust-removing cloth begin to descend, and the compressed high-pressure gas reaches the air knife through the control valve and the gas pipeline. Under the action of the air knife, the gas blows away the old bark and / or dust of the tree. When reaching the root of the tree, the dust-removing cloth and the air knife on the movable arm stop at the same time, and then move upward; when ascending, the control valve of the whitening liquid material opens, and the high-pressure whitening liquid reaches the nozzle for whitening through the pumping mechanism, and the dust-removing cloth and the whitening nozzle on the movable arm move upward to the upper dead point and stop, and the main arm, movable arm and the dust-removing cloth are opened horizontally at the same time to complete the whitening of the current tree, and the operation is repeated to whiten the next tree.

[0044] To sum up, the present invention has the advantages of simple and compact structure and flexible and convenient use. It can quickly complete the blowing and whitewashing of various trees by driving the air knife and the nozzle to realize a reciprocating movement of one down and one up through the movable support arm. The whitewashing is firm and the whitewashing height can be adjusted arbitrarily. At the same time, the blowing and whitewashing process can be shielded by the surrounding cloth, and the dust in the blowing process can be recovered and processed by the return air device to protect the surrounding environment. The present invention can realize all-terrain and barrier-free operation, which can not only prevent trees from being burned, frozen and cracked, and attacked by pests and diseases, but also improve the quality and speed of tree whitewashing, realize all-terrain barrier-free tree whitewashing, reduce labor intensity while reducing labor input, significantly reduce the cost of tree whitewashing, make the trees on the road neat and uniform, improve and beautify the living environment, brighten the city appearance, and make people's lives happier and better.

[0045] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A tree whitening device, characterized in that: The invention comprises a lifting frame, wherein a main arm is provided on the upper part of the frame, a movable arm is provided below the main arm, the main arm is connected to the movable arm through a lifting mechanism, and both the main arm and the movable arm are split structures capable of wrapping trees; a cloth for enclosing trees is provided between the main arm and the movable arm; an air knife connected to a high-pressure gas generator and a plurality of nozzles connected to a pumping mechanism are provided on the inner wall of the movable arm; the frame comprises a lifting rod and a support frame, the lower end of the fixed part of the lifting rod is hinged to the support frame, the upper end of the fixed part of the lifting rod is connected to the support frame through an oblique push-pull rod, a fixed base connected to the main arm is provided at the top of the telescopic part of the lifting rod, and an angle adjustment rod is provided between the fixed base and the telescopic part of the lifting rod; The fixed base is provided with an upper transverse hydraulic push-pull device, the main support arm includes a first main arm and a second main arm, the first main arm and the second main arm are semicircular arcs opposite to each other; the two free ends of the upper transverse hydraulic push-pull device are respectively connected to one end of the first main arm and the second main arm, and the other ends of the first main arm and the second main arm are arranged opposite to each other; the lifting mechanism includes a reel, a traction rope and a motor for driving the reel, the reel is two and is respectively arranged between the two ends of the first main arm and the second main arm, the first main arm and the second main arm are both provided with a pulley matched with the traction rope, one end of the traction rope is connected to the reel, and the motor is arranged on the fixed base; the upper end of the apron is connected to the first main arm and the second main arm; The movable support arm comprises a first movable arm and a second movable arm, wherein the first movable arm and the second movable arm are semicircular arcs opposite to each other, one end of the first movable arm and the second movable arm are respectively connected to two free ends of the lower transverse hydraulic push-pull device, and the other ends of the first movable arm and the second movable arm are arranged opposite to each other; the lower transverse hydraulic push-pull device is arranged on a movable base; The movable base is arranged below the fixed base, the first movable arm and the second movable arm correspond to the first main arm and the second main arm respectively; the air knife and the plurality of nozzles are arranged on the inner side walls of the first movable arm and the second movable arm; the lower end of the cloth is connected to the first movable arm and the second movable arm; the other end of the traction rope is connected to the first movable arm and the second movable arm; the air knife and the nozzle are arranged on the inner side of the first movable arm and the second movable arm; there are a plurality of air knives, and the plurality of air knives and the nozzles are arranged at intervals on the inner walls of the first movable arm and the second movable arm; The first movable arm and the second movable arm are equipped with fixing clamps fixedly connected to the traction rope, and the positions of the fixing clamps correspond to the pulleys on the main support arm; the air knife is installed and connected to the air outlet duct bracket through the fixing clamp, and the air outlet duct bracket is provided with a bracket seat for fixing the air knife, and the air outlet duct bracket is connected to the movable support arm.

2. The tree whitening device according to claim 1, characterized in that: The nozzle is a fan-shaped nozzle; the air knife is a fan-shaped air outlet; the fan-shaped nozzle and the air knife air outlet are inclined upward at an angle α of 20°.

3. The tree whitening device according to claim 1, characterized in that: The outer sides of the upper and lower ends of the cloth are respectively provided with pressure strips for fixing the cloth, the upper pressure strip is connected to the first main arm and the second main arm, and the lower pressure strip is fixed on the cloth bracket, and the cloth bracket is fixedly arranged on the outer sides of the first movable arm and the second movable arm; the traction rope is arranged on the inner side of the cloth.

4. The tree whitening device according to claim 1, characterized in that: It also includes a return air device, which includes a return air duct and a filter. The return air duct is connected to the main support arm, and the filter is arranged at the air inlet of the return air duct. The air inlet of the return air duct is obliquely downward toward the inner side of the main support arm; the return air duct is connected to the dust removal equipment.

5. The tree whitening device according to claim 4, characterized in that: A level measuring instrument is also provided on the fixed base.

6. The tree whitening device according to claim 1, characterized in that: The oblique push-pull rod, lifting rod and angle adjustment rod are all single-rod hydraulic cylinders, and the upper horizontal hydraulic push-pull device and the lower horizontal hydraulic push-pull device are all double-rod hydraulic cylinders.

7. A tree whitening machine, characterized in that: It comprises a vehicle-mounted mobile device and the tree whitewashing device as claimed in claim 5, wherein the support frame comprises a horizontal connecting frame and an upright support, the upright support is a frame structure, comprising columns on both sides and a crossbeam between the two columns; the lower end of the fixed part of the lifting rod is rotatably connected to the bottom crossbeam, and the upper end of the fixed part of the lifting rod is rotatably connected to the middle and upper crossbeam through an oblique push-pull rod; the rear end of the horizontal connecting frame is connected to the front end of the vehicle-mounted mobile device, the front end of the horizontal connecting frame is rotatably connected to the bottom of one side column, and the middle part of the horizontal connecting frame is rotatably connected to the crossbeam at the bottom of the other side column through a telescopic rod.

8. The tree whitening machine according to claim 7, characterized in that: The vehicle-mounted mobile device is a small tractor; the high-pressure gas generator, pumping mechanism and return air device are all driven by the power components of the tractor, and the high-pressure gas generator, pumping mechanism and dust removal equipment are all arranged on a bracket at the rear wheel end of the small tractor.

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