Automatic whitewashing machine for municipal engineering trees

Abstract

The invention discloses a municipal engineering tree automatic whitewashing machine which comprises a base, rollers, a liquid inlet box body, a handle, a liquid inlet pipe, a storage device, a switch and a movable door. The storage device is arranged at the left end of the top of the base, and a transverse conveying device and a longitudinal conveying device are arranged on the inner side of the storage device; the spraying device can be lifted left and right, the spraying structure can be stored and protected, the spraying height of the trees can be adjusted conveniently, the trees can be whitewashed better through the arrangement of the multiple nozzles, and after spraying is completed, the spraying device can be lifted up and down conveniently, and the spraying device can be used for spraying the trees conveniently. And the jacking device can enable the cleaning sponge to work up and down in a reciprocating mode, so that the residual coating on the spray head is cleaned, the situation of follow-up spraying blockage is avoided, and therefore the purposes of reducing the use cost and improving the spraying efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the field related to tree whitening machines, in particular to an automatic whitening machine for trees in municipal engineering projects. Background Art

[0002] Municipal engineering is an undergraduate major in China's higher vocational education and belongs to the category of civil engineering. Tree trunk whitewashing means that workers brush a layer of white liquid on the tree trunks. After the tree trunks are dressed in a white skirt made of lime water, they can reflect 10% of the sunlight back. In this way, heat absorption is reduced, and the tree trunks will not freeze and crack due to the huge temperature difference between day and night. It also has the effect of sterilization and insect prevention, which is a unique landscape in the city. In this process, a tree whitewashing machine is needed to process the trees.

[0003] The whitewashing structure of the whitewashing machines on the market is usually exposed to the outside, which is prone to dust accumulation and may also cause collisions and damage to the spraying structure, thereby increasing the cost of use. After the whitewashing structure has whitewashed the trees, the whitewashing agent is likely to overflow from the nozzle. After it dries, it will cause blockage in the nozzle, thereby reducing the efficiency of subsequent spraying. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides an automatic whitewashing machine for trees in municipal engineering.

[0005] The present invention is implemented in this way: an automatic whitewashing machine for trees in municipal engineering is constructed, the device comprises a base, a roller, a liquid inlet box, a handle, a liquid inlet pipe, a storage device, a switch and a movable door, the bottom of the base is provided with a roller, the top right end of the base is vertically fixed to the liquid inlet box, the upper right end of the liquid inlet box is fixed as a whole with the handle, the top of the liquid inlet box is provided with a liquid inlet pipe, the left end of the liquid inlet box is fixed as a whole with the storage device, the front end of the storage device is provided with a switch, the left end of the storage device is provided with a movable door, the storage device also comprises a shell, a horizontal conveying device, a vertical conveying device, a spraying device, A material taking device, a first transmission pipe, a second transmission pipe and a cleaning device, the bottom of the shell is fixed as a whole with the transverse transmission device, the inner side of the transverse transmission device is movably connected with the longitudinal transmission device, the inner side of the longitudinal transmission device is connected with the spraying device, the lower right end of the inner side of the shell is fixed as a whole with the material taking device, the upper left end of the material taking device is provided with the first transmission pipe and the second transmission pipe, the upper ends of the first transmission pipe and the second transmission pipe are fixed with the spraying device, the lower left end of the inner side of the shell is fixed as a whole with the cleaning device, the right end of the shell is fixed as a whole with the liquid inlet box, and a switch is provided at the upper right end of the front side of the shell.

[0006] Preferably, the transverse conveying device includes a first outer frame, a first limit rod, a first motor, a screw rod and a second rotating shaft. The upper and lower ends of the inner side of the first outer frame are fixed as a whole with the first limit rod, the left end of the inner side of the first outer frame is fixed to the first motor, the right end of the first motor is fixed as a whole with the screw rod, the right end of the screw rod is fixed to the second rotating shaft, the right end of the second rotating shaft is connected to the first outer frame, and the outer side of the screw rod is movably connected to the longitudinal conveying device.

[0007] Preferably, the longitudinal conveying device includes a second outer frame, a second limit rod, a limit groove, a conveyor belt, a limit slider, a limit wheel, a third rotating shaft and a second motor, second limit rods are provided on the left and right sides of the front end of the second outer frame, a limit groove is provided in the middle of the front end of the second outer frame, a conveyor belt is provided on the inner side of the second outer frame, the left and right sides of the lower end of the second outer frame are fixed to the limit slider, the inner side of the conveyor belt is movably fitted with the limit wheel, the left end of the limit wheel is fixed as a whole with the third rotating shaft, the left and right ends of the limit wheel are connected to the second motor, the inner side of the limit slider is connected to the screw, the outer side of the second limit rod is movably connected to the spraying device, and the outer side of the conveyor belt is fixed as a whole with the spraying device.

[0008] Preferably, the spraying device includes a limit block, a slide groove, a slot hole, a long handle rod, an electric push rod, a rack, a first spray brush part and a second spray brush part. A slide groove is opened in the middle of the limit block, and slot holes are opened at the front and rear ends of the inner side of the limit block. The left end of the limit block is fixed to the long handle rod as a whole, and an electric push rod is arranged on the top of the long handle rod. The left end of the electric push rod is fixed to the rack, and the outer side of the rack is meshed with the first spray brush part and the second spray brush part. The inner side of the slide groove is fixed to the conveyor belt, and the inner side of the slot hole is movably connected to the second limit rod.

[0009] Preferably, the first spray brush component includes a gear, a clamping ring, a limit plate, a brush, a nozzle and a liquid inlet pipe, the lower end of the gear is connected to the clamping ring, the inner ring surface of the clamping ring is provided with a limit plate, the inner side of the limit plate is connected to the brush, the inner side surface of the clamping ring is fixed to the nozzle as a whole, and the rear end of the nozzle is connected to the liquid inlet pipe, the lower end of the gear is rotatably connected to the long handle rod, and the outer side of the gear is meshed with the rack.

[0010] Preferably, the cleaning device includes a shell, a base, a third motor, a lifting device, a limit frame and a cleaning sponge. The middle part of the bottom end of the shell is fixed as a whole with the base, the top of the base is vertically fixed to the third motor, the left end of the third motor is connected to the lifting device, the top of the lifting device is vertically fixed to the limit frame, a cleaning sponge is placed inside the limit frame, and the bottom of the shell is fixed as a whole with the outer shell.

[0011] Preferably, the lifting device includes a first rotating shaft, a limiting frame, a rotating wheel and a pushing rod, the front end of the first rotating shaft passes through the inner lower end of the limiting frame and is connected to the rear end of the rotating wheel, the outer side surface of the rotating wheel is movably fitted with the pushing rod, the rear end of the first rotating shaft is fixed to the third motor, the bottom of the limiting frame is fixed to the base as a whole, and the top of the pushing rod is fixed to the limiting frame.

[0012] Preferably, the liquid inlet pipe is arranged on the inner side of the clamp ring at an arc angle, and a liquid inlet is arranged at the middle of the front end of the liquid inlet pipe at the clamp ring, while the rear end of the liquid inlet pipe is respectively connected to the spray head.

[0013] The present invention has the following advantages: The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement, which has the following improvements compared with the same type of equipment: Advantages: The automatic whitewashing machine for trees in municipal engineering projects described in the present invention is provided with a storage device at the left end of the top of the base. The horizontal conveying device and the vertical conveying device arranged inside the storage device can achieve the effect of left and right and lifting and lowering the spraying device, which not only achieves the effect of storing and protecting the spraying structure, but also facilitates the adjustment of the height of tree spraying. The setting of multiple nozzles is conducive to better whitewashing of trees, and after the spraying is completed, the jacking device can make the cleaning sponge move up and down to clean the residual paint on the nozzle, thereby avoiding the occurrence of subsequent spraying blockage, thereby reducing the use cost and improving the spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the side structure of the storage device of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the transverse conveying device of the present invention; Figure 4 It is a schematic diagram of the main structure of the longitudinal conveying device of the present invention; Figure 5 It is a schematic diagram of the partial structure of the longitudinal conveying device of the present invention from a side view; Figure 6 It is a schematic diagram of the structure of the spraying device of the present invention; Figure 7 It is a schematic diagram of the structure of the first spray brush member of the present invention; Figure 8 is a schematic side view of the cleaning device of the present invention; Fig. 9 It is a schematic diagram of the jacking device of the present invention.

[0015] The markings in the figure are: base-1, roller-2, liquid inlet box-3, handle-4, liquid inlet pipe-5, storage device-6, switch-7, movable door-8, shell-61, horizontal conveying device-62, vertical conveying device-63, spraying device-64, material taking device-65, first conveying tube-66, second conveying tube-67, cleaning device-68, first outer frame-621, first limiting rod-622, first motor-623, screw rod-624, second rotating shaft-625, second outer frame-631, second limiting rod-632, limiting groove-633, conveyor belt-634, limiting slider-635, limiting wheel-636, first Three rotating shafts - 637, the first motor - 638, the limit block - 641, the slide groove - 642, the slot - 643, the long handle rod - 644, the electric push rod - 645, the rack - 646, the first spray brush part - 647, the second spray brush part - 648, the gear - 6471, the clamp ring - 6472, the limit plate - 6473, the brush - 6474, the nozzle - 6475, the liquid inlet pipe - 6476, the shell - 681, the base - 682, the second motor - 683, the lifting device - 684, the limit frame - 685, the cleaning sponge - 686, the first rotating shaft - 6841, the limit frame - 6842, the rotating wheel - 6843, and the push rod - 6844. DETAILED DESCRIPTION

[0016] The following will be combined with the attached Figure 1-9 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement, comprising a base 1, a roller 2, a liquid inlet box 3, a handle 4, a liquid inlet pipe 5, a storage device 6, a switch 7 and a movable door 8. The bottom of the base 1 is provided with a roller 2, the top right end of the base 1 is vertically fixed to the liquid inlet box 3, the upper right end of the liquid inlet box 3 is fixed as a whole with the handle 4, the top of the liquid inlet box 3 is provided with a liquid inlet pipe 5, the left end of the liquid inlet box 3 is fixed as a whole with the storage device 6, the front end of the storage device 6 is provided with a switch 7, the left end of the storage device 6 is provided with a movable door 8, and the setting of the handle 4 is convenient for the staff to better push the trolley.

[0018] See also Figure 2The present invention provides an automatic whitening machine for trees in municipal engineering through improvement. The storage device 6 also includes a shell 61, a horizontal conveying device 62, a vertical conveying device 63, a spraying device 64, a material taking device 65, a first conveying pipe 66, a second conveying pipe 67 and a cleaning device 68. The bottom of the shell 61 is fixed to the horizontal conveying device 62 as a whole, the inner side of the horizontal conveying device 62 is movably connected to the vertical conveying device 63, the inner side of the vertical conveying device 63 is connected to the spraying device 64, the lower right end of the inner side of the shell 61 is fixed to the material taking device 65 as a whole, the upper left end of the material taking device 65 is provided with a first conveying pipe 66 and a second conveying pipe 67, the upper ends of the first conveying pipe 66 and the second conveying pipe 67 are fixed to the spraying device 64, the lower left end of the inner side of the shell 61 is fixed to the cleaning device 68 as a whole, the right end of the shell 61 is fixed to the liquid inlet box 3 as a whole, and the upper right end of the front side of the shell 61 is provided with a switch 7. The arrangement of the horizontal conveying device 62 and the vertical conveying device 63 facilitates the spraying device 64 to achieve the effect of horizontal and vertical pushing.

[0019] See also Figure 3 The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The horizontal conveying device 62 includes a first outer frame 621, a first limiting rod 622, a first motor 623, a screw rod 624 and a second rotating shaft 625. The upper and lower ends of the inner side of the first outer frame 621 are fixed as a whole with the first limiting rod 622, the inner left end of the first outer frame 621 is fixed with the first motor 623, the right end of the first motor 623 is fixed as a whole with the screw rod 624, the right end of the screw rod 624 is fixed with the second rotating shaft 625, the right end of the second rotating shaft 625 is connected to the first outer frame 621, the outer side of the screw rod 624 is movably connected with the longitudinal conveying device 63, and the setting of the first limiting rod 622 has a good limiting sliding effect.

[0020] See also Figure 4 and Figure 5The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The longitudinal transmission device 63 includes a second outer frame 631, a second limiting rod 632, a limiting groove 633, a transmission belt 634, a limiting slider 635, a limiting wheel 636, a third rotating shaft 637 and a second motor 638. The second limiting rod 632 is arranged on the left and right sides of the front end of the second outer frame 631, the limiting groove 633 is arranged in the middle of the front end of the second outer frame 631, the transmission belt 634 is arranged inside the second outer frame 631, and the lower part of the second outer frame 631 is provided with a second limiting rod 632. The left and right sides of the ends are fixed to the limit slider 635, the inner side of the transmission belt 634 is movably fitted with the limit wheel 636, the left end of the limit wheel 636 is fixed to the third rotating shaft 637 as a whole, the left and right ends of the limit wheel 636 are connected to the second motor 638, the inner side of the limit slider 635 is connected to the screw rod 624, the outer side of the second limit rod 632 is movably connected to the spraying device 64, the outer side of the transmission belt 634 is fixed to the spraying device 64 as a whole, and the setting of the two limit wheels 636 facilitates the transmission belt 634 to drive the transmission work.

[0021] See also Figure 6 The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The spraying device 64 includes a limit block 641, a slide groove 642, a slot hole 643, a long handle rod 644, an electric push rod 645, a rack 646, a first spray brush part 647 and a second spray brush part 648. A slide groove 642 is provided in the middle of the limit block 641, and slot holes 643 are provided at the front and rear ends of the inner side of the limit block 641. The left end of the limit block 641 is fixed to the long handle rod 644 as a whole. An electric push rod 645 is provided at the top of the long handle rod 644. The left end of the electric push rod 645 is fixed to the rack 646. The outer side of the rack 646 is meshed with the first spray brush part 647 and the second spray brush part 648. The inner side of the slide groove 642 is fixed to the conveyor belt 634, and the inner side of the slot hole 643 is movably connected to the second limit rod 632. Under the drive of the electric push rod 645, the rack 646 and the spray brush part can cooperate with each other.

[0022] See also Figure 7The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The first spray brush part 647 includes a gear 6471, a clamp ring 6472, a limit plate 6473, a brush 6474, a nozzle 6475 and a liquid inlet pipe 6476. The lower end of the gear 6471 is connected to the clamp ring 6472. The inner ring surface of the clamp ring 6472 is provided with a limit plate 6473. The inner side of the limit plate 6473 is connected to the brush 6474. The inner side surface of the clamp ring 6472 is fixed to the nozzle 6475 as a whole. The rear end of the nozzle 6475 is connected with the liquid inlet pipe 6476, and the liquid inlet pipe 6476 is arranged on the inner side of the clamp ring 6472 at an arc angle of the clamp ring 6472, and a liquid inlet is arranged in the middle of the front end of the liquid inlet pipe 6476 at the clamp ring 6472, and the rear ends of the liquid inlet pipe 6476 are respectively connected with the nozzles 6475, the lower end of the gear 6471 is rotatably connected with the long handle rod 644, and the outer side of the gear 6471 is meshed with the rack 646. The arrangement of multiple nozzles 6475 is conducive to better spraying of trees.

[0023] See also Figure 8 The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The cleaning device 68 includes a shell 681, a base 682, a third motor 683, a lifting device 684, a limit frame 685 and a cleaning sponge 686. The middle part of the bottom end of the shell 681 is fixed as a whole with the base 682, the top of the base 682 is vertically fixed to the third motor 683, the left end of the third motor 683 is connected to the lifting device 684, the top of the lifting device 684 is vertically fixed to the limit frame 685, a cleaning sponge 686 is placed inside the limit frame 685, the bottom of the shell 681 is fixed as a whole with the outer shell 61, and the cleaning sponge 686 can clean the residual liquid of the nozzle 6475.

[0024] See also Fig. 9 The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement. The lifting device 684 includes a first rotating shaft 6841, a limiting frame 6842, a rotating wheel 6843 and a push rod 6844. The front end of the first rotating shaft 6841 passes through the lower end of the inner side of the limiting frame 6842 and is connected to the rear end of the rotating wheel 6843. The outer side surface of the rotating wheel 6843 is movably fitted with the push rod 6844. The rear end of the first rotating shaft 6841 is fixed to the third motor 683. The bottom of the limiting frame 6842 is fixed to the base 682 as a whole. The top of the push rod 6844 is fixed to the limiting frame 685. The comma-shaped rotating wheel 6843 facilitates the lifting effect of the push rod 6844.

[0025] The present invention provides an automatic whitewashing machine for trees in municipal engineering through improvement, and its working principle is as follows; First, the staff can use the handle 4 to move the roller 2, and then push the device to the position where spraying is required, and the staff can open the movable door 8 to spray the tree, and in this process, the spray liquid can be replenished through the liquid inlet pipe 5 provided at the upper end of the liquid inlet box 3; Second, the staff can then use the switch 7 to start the first motor 623 to start working, and the output shaft of the first motor 623 will drive the screw rod 624 to rotate, and then the screw rod 624 will drive the limit slider 635 to slide on the first limit rod 622, thereby achieving the effect of the spray device 64 sliding left and right; Third, when the expected extension distance is reached, the second motor 638 can be driven by the switch 7 to rotate the limit wheel 636, so that the conveyor belt 634 can play the role of up and down transmission, and because the limit block 641 fixed at the front end of the conveyor belt 634 can be lifted and slid on the second limit rod 632, so as to achieve spraying at different positions of the tree; Fourth, the staff finally makes the electric push rod 645 work, and the electric push rod 645 pushes the rack 646 to slide on the long handle rod 644, so that the rack 646 will drive the gear 6471 to mesh, thereby achieving the effect of the clamp ring 6472 to separate and open, and the spray head 6475 will spray the tree trunk, and the brush 6474 arranged inside the clamp ring 6472 is convenient for rolling the sprayed paint; Fifth, after the spraying is completed, the clamp ring 6472 can be stored in the outer shell 61 through the horizontal conveying device 62, and then the clamp ring 6472 can be pushed against the cleaning sponge 686 through the longitudinal conveying device 63, and under the drive of the third motor 683, the rotating wheel 6843 can have the effect of lifting and lowering the push rod 6844, so that the limit frame 685 can be pushed back and forth from the shell 681, so that the cleaning sponge 686 can clean the residual paint on the nozzle 6475.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic tree whitening machine for municipal engineering, comprising a base (1), a roller (2), a liquid inlet box (3), a handle (4), a liquid inlet pipe (5), a storage device (6), a switch (7) and a movable door (8), wherein the base (1) is provided with a roller (2) at the bottom, the top right end of the base (1) is vertically fixed to the liquid inlet box (3), the upper right end of the liquid inlet box (3) is fixed to the handle (4) as a whole, the top of the liquid inlet box (3) is provided with a liquid inlet pipe (5), the left end of the liquid inlet box (3) is fixed to the storage device (6) as a whole, the front end of the storage device (6) is provided with a switch (7), and the left end of the storage device (6) is provided with a movable door (8); Features: The storage device (6) further comprises a housing (61), a transverse conveying device (62), a longitudinal conveying device (63), a spraying device (64), a material taking device (65), a first conveying pipe (66), a second conveying pipe (67) and a cleaning device (68), wherein the bottom of the housing (61) is fixedly connected to the transverse conveying device (62) as a whole, the inner side of the transverse conveying device (62) is movably connected to the longitudinal conveying device (63), the inner side of the longitudinal conveying device (63) is connected to the spraying device (64), and the The lower right end of the inner side of the shell (61) is fixed to the material taking device (65) as a whole, the upper left end of the material taking device (65) is provided with a first transmission tube (66) and a second transmission tube (67), the upper ends of the first transmission tube (66) and the second transmission tube (67) are fixed to the spraying device (64), the lower left end of the inner side of the shell (61) is fixed to the cleaning device (68) as a whole, the right end of the shell (61) is fixed to the liquid inlet box (3) as a whole, and the upper right end of the front side of the shell (61) is provided with a switch (7).

2. According to claim 1, the automatic whitewashing machine for trees in municipal engineering is characterized by: The horizontal conveying device (62) comprises a first outer frame (621), a first limiting rod (622), a first motor (623), a screw rod (624) and a second rotating shaft (625); the upper and lower ends of the inner side of the first outer frame (621) are fixed to the first limiting rod (622) as a whole; the left end of the inner side of the first outer frame (621) is fixed to the first motor (623); the right end of the first motor (623) is fixed to the screw rod (624) as a whole; the right end of the screw rod (624) is fixed to the second rotating shaft (625); the right end of the second rotating shaft (625) is connected to the first outer frame (621); and the outer side of the screw rod (624) is movably connected to the longitudinal conveying device (63).

3. According to claim 1, the automatic whitewashing machine for trees in municipal engineering is characterized by: The longitudinal conveying device (63) comprises a second outer frame (631), a second limiting rod (632), a limiting groove (633), a conveying belt (634), a limiting slider (635), a limiting wheel (636), a third rotating shaft (637) and a second motor (638), wherein the second outer frame (631) is provided with second limiting rods (632) on the left and right sides of the front end, the limiting groove (633) is provided in the middle of the front end of the second outer frame (631), the conveying belt (634) is provided inside the second outer frame (631), and the second outer frame (63 1) The left and right sides of the lower end are fixed to the limit slider (635), the inner side of the transmission belt (634) is movably fitted with the limit wheel (636), the left end of the limit wheel (636) is fixed to the third rotating shaft (637) as a whole, the left and right ends of the limit wheel (636) are connected to the second motor (638), the inner side of the limit slider (635) is connected to the screw rod (624), the outer side of the second limit rod (632) is movably connected to the spraying device (64), and the outer side of the transmission belt (634) is fixed to the spraying device (64) as a whole.

4. According to claim 1, the automatic whitewashing machine for trees in municipal engineering is characterized by: The spraying device (64) comprises a limit block (641), a slide groove (642), a slot hole (643), a long handle rod (644), an electric push rod (645), a rack (646), a first spray brush component (647) and a second spray brush component (648), wherein the limit block (641) has a slide groove (642) in the middle, slot holes (643) are formed at the front and rear ends of the inner side of the limit block (641), and the left end of the limit block (641) is connected to the long handle rod (644). The handle rod (644) is fixed as a whole, and an electric push rod (645) is arranged at the top of the long handle rod (644). The left end of the electric push rod (645) is fixed to the rack (646), and the outer side of the rack (646) is meshed with the first brush member (647) and the second brush member (648). The inner side of the slide groove (642) is fixed to the conveyor belt (634), and the inner side of the slot hole (643) is movably connected to the second limit rod (632).

5. According to claim 4, the automatic whitewashing machine for trees in municipal engineering projects is characterized by: The first spray brush component (647) comprises a gear (6471), a clamping ring (6472), a limiting plate (6473), a brush (6474), a nozzle (6475) and a liquid inlet pipe (6476); the lower end of the gear (6471) is connected to the clamping ring (6472); a limiting plate (6473) is provided on the inner ring surface of the clamping ring (6472); the inner side of the limiting plate (6473) is connected to the brush (6474); the inner side surface of the clamping ring (6472) is fixed to the nozzle (6475) as a whole; the rear end of the nozzle (6475) is connected to the liquid inlet pipe (6476); the lower end of the gear (6471) is rotatably connected to the long handle rod (644); and the outer side of the gear (6471) is meshed with the rack (646).

6. According to claim 1, the automatic whitewashing machine for trees in municipal engineering projects is characterized by: The cleaning device (68) comprises a shell (681), a base (682), a third motor (683), a lifting device (684), a limit frame (685) and a cleaning sponge (686); the middle part of the bottom end of the shell (681) is fixed to the base (682) as a whole; the top of the base (682) is vertically fixed to the third motor (683); the left end of the third motor (683) is connected to the lifting device (684); the top of the lifting device (684) is vertically fixed to the limit frame (685); a cleaning sponge (686) is placed inside the limit frame (685); and the bottom of the shell (681) is fixed to the outer shell (61) as a whole.

7. The automatic whitewashing machine for trees in municipal engineering according to claim 6, characterized in that: The lifting device (684) comprises a first rotating shaft (6841), a limiting frame (6842), a rotating wheel (6843) and a push rod (6844); the front end of the first rotating shaft (6841) passes through the lower end of the inner side of the limiting frame (6842) and is connected to the rear end of the rotating wheel (6843); the outer side surface of the rotating wheel (6843) is movably fitted with the push rod (6844); the rear end of the first rotating shaft (6841) is fixed to the third motor (683); the bottom of the limiting frame (6842) is fixed to the base (682) as a whole; and the top of the push rod (6844) is fixed to the limiting frame (685).

8. The automatic whitewashing machine for trees in municipal engineering according to claim 5, characterized in that: The liquid inlet pipe (6476) is arranged on the inner side of the clamp ring (6472) at an arc angle of the clamp ring (6472), and a liquid inlet port is arranged at the middle of the front end of the liquid inlet pipe (6476) at the clamp ring (6472), while the rear end of the liquid inlet pipe (6476) is respectively connected to the nozzle (6475).

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