A drug spraying device for forestry tree species maintenance

Abstract

The present invention provides a drug spraying device for forestry tree species maintenance, which relates to the technical field of tree drug liquid spraying, and comprises a device carrier and a spraying water pipe. The drug spraying device for forestry tree species maintenance also comprises a wearing mechanism and a holding mechanism, wherein the wearing mechanism comprises a sliding sleeve and a belt, the holding mechanism comprises a sleeve and a sliding rod, a nozzle is installed at the end of the spraying water pipe, a pair of limiting rings are fixedly installed on the side of the outer wall of the spraying water pipe close to the nozzle, a connecting mechanism is installed at the rear end of the sleeve, the connecting mechanism comprises a sleeve with a notch, a cylindrical part is fixed at the front end of the sliding rod, and a limiting slot and two blocking parts are provided on the sliding rod. The present invention hangs the tail of the sleeve on the waist of an operator through a waist belt, the operator holds the sleeve to spray the drug, and releases the sliding rod by pressing the pressing rod with the thumb, thereby extending the distance between the nozzle and the operator, spraying drugs on higher tree species or those far away from the operator, and improving the spraying effect.

Description

Technical Field

[0001] The invention belongs to the technical field of tree liquid medicine spraying, and more specifically, particularly relates to a medicine spraying device for forestry tree species maintenance. Background Art

[0002] In the forestry sector, effective tree maintenance is an important part of ensuring healthy tree growth and forest ecological stability. Among them, drug spraying is a key means of maintenance measures such as preventing and controlling pests and diseases and providing nutrition, and its convenience, efficiency and effectiveness are crucial.

[0003] Traditional forestry tree maintenance spraying methods have many shortcomings. Common handheld spraying equipment often requires operators to hold it in their hands throughout the process, which is not only labor-intensive, but also difficult to accurately spray on taller or farther-away tree species, affecting the full effect of the drug.

[0004] Although some large vehicle-mounted or fixed spraying devices have reduced the burden on operators to a certain extent, they lack flexibility and are difficult to adapt to the complex and changeable forest environment and tree distribution.

[0005] In addition, existing spraying devices have design defects in terms of distance adjustment between the nozzle and the operator, ease of disassembly and assembly of the equipment, and weight distribution, which lead to inconvenient operation and low efficiency, and cannot meet the needs of modern forestry for efficient and precise maintenance.

[0006] Therefore, in order to improve the effect and efficiency of drug spraying in forestry tree species maintenance, reduce the labor intensity of operators, and optimize the operating experience, it is necessary to develop a new type of drug spraying device for forestry tree species maintenance. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a drug spraying device for forestry tree species maintenance to solve the above problems.

[0008] A drug spraying device for forestry tree species maintenance includes a device carrier and a spraying water pipe. The drug spraying device for forestry tree species maintenance also includes a wearing mechanism and a holding mechanism, wherein the wearing mechanism includes a sliding sleeve and a belt, the holding mechanism includes a sleeve and a sliding rod, a nozzle is installed at the end of the spraying water pipe, a pair of limit rings are fixedly installed on the side of the outer wall of the spraying water pipe close to the nozzle, a connecting mechanism is installed at the rear end of the sleeve, the connecting mechanism includes a sleeve with a notch, a cylindrical part is fixed at the front end of the sliding rod, and a limit slot and two baffles are provided on the sliding rod.

[0009] Preferably, the sliding sleeve is put on the belt, a fixing seat is fixed on the sliding sleeve, a shaft composed of two cylinders with different diameters is fixed on the middle part of the fixing seat, a circle of clamping ring is also fixed on the fixing seat, and a semicircular member 1 is movably fitted on the fixing seat, wherein an arc-shaped clamping groove and a special-shaped clamping groove are opened on the semicircular member 1, and four positioning seats are fixedly connected to the semicircular member 1, the arc-shaped clamping groove is movably clamped with the clamping ring, and the special-shaped clamping groove is clamped with the shaft member.

[0010] Preferably, a connecting seat is fixed at the upper end of the cylindrical member, a semicircular ring and a threaded column are fixed on the connecting seat, a similar semicircular ring is fitted on the semicircular ring, a movable seat is fitted on the connecting seat, a hole is opened on the movable seat for movably socketed with the threaded column, a nut is threadedly socketed on the threaded column, wherein the bottom of the movable seat is fitted on the surface of the cylindrical member, a complete ring body composed of two semicircular rings is socketed with the spray water pipe, and the complete ring body composed of the two semicircular rings is located between two limit rings.

[0011] Preferably, a strip groove, a hole groove, two slide grooves and four limit strip grooves are provided on the surface of the sleeve, a sealing plate is fixed at the rear end pipe mouth of the sleeve, a partition is fixedly connected to the inner wall of the sleeve, a spring is fixedly connected between the partition and the slide rod, wherein a same connecting seat is fixed on the pipe surface at the rear end of the sleeve, and a same threaded column, movable seat, nut and two semicircular rings are installed on the connecting seat on the sleeve, and the sleeve is movably connected to the slide rod.

[0012] Preferably, an arc-shaped piece and two round rods are fixed to the upper end of the sleeve tube surface, a support pad is fixedly connected to the top of each round rod, a pressure plate is movably sleeved between the two round rods, a spring 2 is movably sleeved on each round rod, and the spring 2 is located between the support pad and the pressure plate. A pair of connecting plates are fixedly connected to the arc-shaped piece, and a pressure rod is rotatably connected between the two connecting plates, wherein the pressure rod is a stepped structure, a triangular piece is fixed to the bottom surface of the front end of the pressure rod, two limit columns are fixedly connected to the middle part of the pressure rod, and the upper surface of the front end of the pressure rod presses against the pressure plate.

[0013] Preferably, four slide bars are fixedly installed on the inner wall of the collar, and the four slide bars are movably clamped in four limit bar grooves respectively. The two sides of the outer wall of the collar are respectively fixedly connected with a side rectangular seat and a side cylindrical seat. A semicircular part 2 is fixed on the side cylindrical seat, and a special-shaped groove is also provided on the semicircular part 2. Four positioning grooves are also provided on the semicircular part 2, wherein the groove body formed by the two special-shaped grooves is the same size as the shaft part, and the surfaces of the side cylindrical seat and the two special-shaped grooves are provided with threads.

[0014] Preferably, a limiting screw is threadedly sleeved on the side rectangular seat and the collar, and the limiting screw is inserted into the hole groove.

[0015] Preferably, the two semicircular rings on the sleeve are sleeved with the water spraying pipe, and the four positioning grooves are respectively plugged with the four positioning seats.

[0016] Preferably, a threaded ring is threadedly sleeved on the side cylindrical seat.

[0017] Preferably, the triangular piece at the front end of the pressure rod is clamped in the limiting groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the tail of the sleeve is hung on the waist of the operator through a belt. The operator holds the sleeve to spray the medicine and releases the sliding rod by pressing the pressure rod with the thumb, thereby extending the distance between the spray head and the operator, spraying the medicine on the higher tree species or the tree species far away from the operator, and improving the spraying effect.

[0020] In the present invention, the end of the spray water pipe is clamped between the two semicircular rings on the sliding rod, and the two semicircular rings on the sliding rod are fixed together by using a nut and a threaded column. The two semicircular rings on the sliding rod are located between the two limiting rings. Then the spray water pipe is straightened, and the two semicircular rings on the sleeve are fixed together in the same way and sleeved with the spray water pipe body. The spray water pipe is easy to disassemble and assemble with the sliding rod and the sleeve, and the spray water pipe is not easy to deviate and fall off due to the limitation of the limiting ring.

[0021] In the present invention, after the operator rotates and connects the sleeve with the sliding sleeve on the belt, the operator can hold the sleeve to deflect the nozzle up and down, and cooperate with the deflection of the operator's body to spray medicine over a large range. After the sleeve is rotated and connected with the sliding sleeve on the belt, the belt can share a large part of the weight, which can effectively relieve arm fatigue when spraying medicine for a long time. The arm only needs to control the spraying direction of the nozzle, and most of the weight of the sleeve, sliding rod, nozzle and part of the spraying water pipe is borne by the belt.

[0022] In the present invention, when encountering a situation where the distance between the tree species and the sprinkler is large or the tree species is high, the operator presses the pressure rod with the thumb until the limit column on the pressure rod presses against the outer wall of the sleeve and the pressure plate on the pressure rod. At this time, the triangular part on the pressure rod disengages from the limit slot. At this time, the slide bar loses the limit of the triangular part, and under the elastic force of spring 1, the slide bar slides out of the sleeve until the stopper on the slide bar is pressed by the front end of the slide slot. At this time, spring 1 is still in a compressed state, so that the slide bar remains in an extended state, achieving the effect of extending the distance between the sprinkler operator and the sprinkler quickly. When the distance between the tree species and the sprinkler is large or the tree species is high, the quality of the drug spraying can be effectively guaranteed, and it is avoided that the drug sprayed by the sprinkler cannot reach the tree species when the distance between the tree species and the sprinkler is large or the tree species is high.

[0023] In the present invention, when the nozzle does not need to be extended for use any longer, the operator disengages the nozzle from the hole groove by rotating the limit screw and slides the sleeve backward. During this process, the slide bar slides along the limit bar groove until the slide bar abuts against the front end of the limit bar groove. At this time, the operator can hold the slide bar and push the slide bar to slide back into the sleeve until the cylindrical part abuts against the sleeve. At this time, under the elastic force of spring 2, the triangular part on the pressure rod is re-stuck in the limit groove, so that the sleeve and the slide bar remain in the state before extension. At this time, the sleeve is slid forward again until the slide bar abuts against the rear end of the limit bar groove, and then the limit screw is reversed to insert it into the hole groove, thereby completing the shortening of the nozzle. The operator can complete the whole process quickly by himself without disassembly, thereby improving the efficiency of switching the nozzle length.

[0024] In the present invention, during the use of the present invention, the whole process can be completed quickly by an operator alone, and the spraying efficiency is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the waistband in the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the water spray pipe in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the sleeve in the present invention;

[0029] Figure 5 It is a structural diagram of the tail portion of the casing in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the sliding rod in the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the sleeve ring in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the semicircular member 1 in the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the pressure rod in the present invention;

[0034] Fig.10 The present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0035] Fig.11 The present invention Figure 6 A schematic diagram of the enlarged structure at B in the middle;

[0036] Fig.12 The present invention Figure 4Schematic diagram of the enlarged structure at C in the middle;

[0037] Fig.13 The present invention Figure 4 Schematic diagram of the enlarged structure at D in the middle;

[0038] Fig.14 It is a schematic diagram of the structure when the semicircular member 1 and the semicircular member 2 in the present invention are combined.

[0039] In the figure, the corresponding relationship between the names of the components and the numbers of the accompanying drawings is as follows: 1. device carrier; 2. belt; 3. nozzle; 4. cylindrical part; 5. sleeve; 6. sliding sleeve; 7. semicircular part 1; 8. shaft part; 9. fixed seat; 10. snap ring; 11. limiting ring; 12. spray water pipe; 13. positioning seat; 14. arc-shaped slot; 15. special-shaped slot; 16. sliding rod; 17. limiting slot; 18. stopper; 19. threaded column; 20. semicircular ring; 21. nut; 23. movable seat; 24. Limiting strip groove; 25, sliding groove; 26, strip groove; 27, pressure rod; 28, pressure plate; 29, round rod; 30, spring two; 31, support pad; 32, connecting plate; 33, arc-shaped plate; 34, collar; 35, limiting column; 36, sliding strip; 37, limiting screw; 38, side rectangular seat; 39, side cylindrical seat; 40, semicircular part two; 41, threaded ring; 42, spring one; 43, hole groove; 44, partition; 45, sealing plate; 46, connecting seat; 47, positioning groove. DETAILED DESCRIPTION

[0040] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] See also Figure 1-Figure 14 The present invention provides a drug spraying device for forestry tree species maintenance, comprising a device carrier 1 and a spraying water pipe 12, wherein the device carrier 1 is loaded with a drug solution for tree species maintenance, and the drug spraying device for forestry tree species maintenance also comprises a wearing mechanism and a holding mechanism, wherein the wearing mechanism comprises a sliding sleeve 6 and a belt 2, the belt 2 is tied around the waist of the operator, the holding mechanism comprises a sleeve 5 and a sliding rod 16, a nozzle 3 is installed at the end of the spraying water pipe 12, and a pair of limit rings are fixedly installed on one side of the outer wall of the spraying water pipe 12 close to the nozzle 3 11. A connecting mechanism is installed at the rear end of the sleeve 5, and the connecting mechanism includes a notched collar 34. A cylindrical member 4 is fixed to the front end of the slide rod 16. A limit slot 17 and two stoppers 18 are provided on the slide rod 16. The sleeve 5 is hung on the waist of the operator through the belt 2. The operator holds the sleeve 5 to spray the medicine, and releases the slide rod 16 by pressing the pressure rod 27 with the thumb, thereby extending the distance between the spray head 3 and the operator, spraying the medicine on the higher tree species or the tree species far away from the operator, and improving the spraying effect;

[0042] The sliding sleeve 6 is sleeved on the belt 2, and a fixing seat 9 is fixed on the sliding sleeve 6. A shaft member 8 composed of two cylinders with different diameters is fixed to the middle part of the fixing seat 9. A circle of clamping ring 10 is also fixed on the fixing seat 9. A semicircular member 7 is also movably attached to the fixing seat 9, wherein an arc-shaped clamping groove 14 and a special-shaped clamping groove 15 are provided on the semicircular member 7. Four positioning seats 13 are also fixedly connected to the semicircular member 7. The arc-shaped clamping groove 14 is movably clamped with the clamping ring 10, and the special-shaped clamping groove 15 is clamped with the shaft member 8.

[0043] A connecting seat 46 is fixed to the upper end of the cylindrical member 4, a semicircular ring 20 and a threaded column 19 are fixed to the connecting seat 46, a semicircular ring 20 is fitted with the same semicircular ring 20, a movable seat 23 is fitted to the connecting seat 46, a hole is opened on the movable seat 23 for movably sleeved with the threaded column 19, a nut 21 is threadedly sleeved on the threaded column 19, wherein the bottom of the movable seat 23 is fitted to the surface of the cylindrical member 4, a complete ring body composed of two semicircular rings 20 is sleeved with the spraying water pipe 12, and the complete ring body composed of two semicircular rings 20 is located between the two limit rings 11, The end of the spray water pipe 12 is clamped between the two semicircular rings 20 on the slide bar 16, and the two semicircular rings 20 on the slide bar 16 are fixed together by the nut 21 and the threaded column 19. The two semicircular rings 20 on the slide bar 16 are located between the two limiting rings 11, and then the spray water pipe 12 is straightened, and the two semicircular rings 20 on the sleeve 5 are fixed together in the same way and sleeved with the spray water pipe 12 body. The spray water pipe 12 is easy to disassemble and assemble with the slide bar 16 and the sleeve 5, and the spray water pipe 12 is not easy to deviate and fall off due to the restriction of the limiting ring 11;

[0044] The surface of the sleeve 5 is provided with a strip groove 26, a hole groove 43, two slide grooves 25 and four limit strip grooves 24. A sealing plate 45 is fixed at the rear end of the sleeve 5. A partition 44 is fixedly connected to the inner wall of the sleeve 5. A spring 1 42 is fixedly connected between the partition 44 and the slide rod 16. A similar connecting seat 46 is fixed on the surface of the sleeve at the rear end. The connecting seat 46 on the sleeve 5 is provided with the same threaded column 19, a movable seat 23, a nut 21 and two semicircular rings 20. The sleeve 5 is movably connected with the slide rod 16. The spring 1 42 is fixedly connected between the partition 44 and the slide rod 16.

[0045] An arc-shaped piece 33 and two round rods 29 are fixed to the upper end of the sleeve 5, and a support pad 31 is fixedly connected to the top of each round rod 29. A pressing piece 28 is movably sleeved between the two round rods 29, and a spring 2 30 is movably sleeved on each round rod 29. The spring 2 30 is located between the support pad 31 and the pressing piece 28. A pair of connecting pieces 32 are fixedly connected to the arc-shaped piece 33, and a pressure rod 27 is rotatably connected between the two connecting pieces 32, wherein the pressure rod 27 is a stepped structure, a triangular piece is fixed to the bottom surface of the front end of the pressure rod 27, and two limiting columns 35 are fixedly connected to the middle part of the pressure rod 27, and the upper surface of the front end of the pressure rod 27 is against the pressing piece 28;

[0046] Four slide bars 36 are fixedly installed on the inner wall of the collar 34, and the four slide bars 36 are movably clamped in the four limit bar grooves 24 respectively. The two sides of the outer wall of the collar 34 are fixedly connected with a side rectangular seat 38 and a side cylindrical seat 39 respectively. A semicircular member 2 40 is fixed on the side cylindrical seat 39, and a special-shaped groove 15 is also provided on the semicircular member 2 40. Four positioning grooves 47 are also provided on the semicircular member 2 40, wherein the groove body composed of the two special-shaped grooves 15 is the same size as the shaft member 8, and the surface of the side cylindrical seat 39 and the two special-shaped grooves 15 is provided with threads;

[0047] The side rectangular seat 38 and the collar 34 are threadedly sleeved with a limiting screw 37, the end of the limiting screw 37 is located between the partition plate 44 and the sealing plate 45, the limiting screw 37 is inserted into the hole groove 43, the two semicircular rings 20 on the sleeve 5 are sleeved with the spray water pipe 12, the four positioning grooves 47 are respectively inserted with the four positioning seats 13, the side cylindrical seat 39 is threadedly sleeved with a thread ring 41, the triangular piece at the front end of the pressure rod 27 is clamped in the limiting clamping groove 17, the operator rotates the semicircular piece 17 to engage the positioning seat 13 on the semicircular piece 17 with the positioning groove 47, so that the semicircular piece 17 and the semicircular piece 2 40 The semicircular member 1 7, the semicircular member 2 40, and the threaded segments on the surface of the side cylindrical seat 39 form a complete thread. At this time, the operator rotates the thread ring 41 to make the thread ring 41 sleeve on the semicircular member 1 7 and the semicircular member 2 40, so as to achieve the effect of fixing the semicircular member 1 7 and the semicircular member 2 40 in a clamping state. At this time, the collar 34 can be deflected with the shaft 8 as the axis, and the collar 34 and the sliding sleeve 6 on the belt 2 are easy to disassemble and assemble. After the operator rotates the collar 34 and the sliding sleeve 6 on the belt 2 to connect, the operator can hold the sleeve 5 to deflect the nozzle 3 up and down to cooperate with the deflection of the operator's body. , large-scale drug spraying can be carried out. After the ring 34 is rotatably connected to the sliding sleeve 6 on the belt 2, the belt 2 can share a large part of the weight. When spraying drugs for a long time, it can effectively relieve arm fatigue. The arm only needs to control the spraying direction of the nozzle 3. Most of the weight of the sleeve 5, the slide bar 16, the nozzle 3 and part of the spraying water pipe 12 is borne by the belt 2. When encountering a situation where the distance between the tree species and the nozzle 3 is large or the tree species is high, the operator presses the pressure rod 27 with the thumb until the limit column 35 on the pressure rod 27 is against the outer wall of the sleeve 5, and the pressure plate 28 on the pressure rod 27 is pushed. At this time, the pressure rod 27 The triangular piece on the upper part disengages from the limit slot 17. At this time, the slide bar 16 loses the limit of the triangular piece. Under the elastic force of the spring 42, the slide bar 16 slides out of the sleeve 5 until the stopper 18 on the slide bar 16 is resisted by the front end of the slide slot 25. At this time, the spring 42 is still in a compressed state, so that the slide bar 16 remains in an extended state, thereby achieving the effect of extending the distance between the operator of the nozzle 3 and the nozzle 3 quickly. When the distance between the tree species and the nozzle 3 is large or the tree species is high, the quality of the drug spraying can be effectively guaranteed, and it is avoided that the drug sprayed by the nozzle 3 cannot reach the tree species when the distance between the tree species and the nozzle 3 is large or the tree species is high.

[0048] Working principle: The tail of the sleeve 5 is hung on the waist of the operator through the waist belt 2. The operator holds the sleeve 5 to spray the medicine, and releases the slide bar 16 by pressing the pressure rod 27 with the thumb, thereby extending the distance between the spray head 3 and the operator, spraying the medicine on the higher tree species or the tree species far away from the operator, and improving the spraying effect;

[0049] The belt 2 is tied around the waist, and the operator pushes the device carrier 1 to the spraying area. After parking the vehicle, the operator takes out the nozzle 3 and the spraying water pipe 12, clamps the end of the spraying water pipe 12 between the two semicircular rings 20 on the slide bar 16, and uses the nut 21 and the threaded column 19 to fix the two semicircular rings 20 on the slide bar 16 together. The two semicircular rings 20 on the slide bar 16 are located between the two limiting rings 11, and then the spraying water pipe 12 is straightened, and the two semicircular rings 20 on the sleeve 5 are fixed together in the same way and sleeved with the spraying water pipe 12 body. The spraying water pipe 12 is easy to disassemble and assemble with the slide bar 16 and the sleeve 5, and the spraying water pipe 12 is not easy to deviate and fall off due to the restriction of the limiting ring 11;

[0050] The operator rotates the semicircular member 1 7 to engage the positioning seat 13 on the semicircular member 1 7 with the positioning groove 47, so that the semicircular member 1 7 and the semicircular member 2 40 form a cylindrical member. Fig.14 As shown, at this time, the semicircular member 1 7, the semicircular member 2 40, and the threaded segments on the surface of the side cylindrical seat 39 form a complete thread. At this time, the operator rotates the thread ring 41 to make the thread ring 41 sleeve on the semicircular member 1 7 and the semicircular member 2 40, so as to achieve the effect of fixing the semicircular member 1 7 and the semicircular member 2 40 in the engaged state. At this time, the ring 34 can be deflected with the shaft member 8 as the axis, and the ring 34 and the sliding sleeve 6 on the belt 2 are easy to disassemble and assemble. After the operator rotates the ring 34 and the sliding sleeve 6 on the belt 2 to connect, the operator can hold the sleeve 5 to deflect the nozzle 3 up and down, and cooperate with the deflection of the operator's body to spray a large range of drugs. After the ring 34 is rotated and connected with the sliding sleeve 6 on the belt 2, the belt 2 can share a large part of the weight. When spraying drugs for a long time, it can effectively relieve arm fatigue. The arm only needs to control the spraying direction of the nozzle 3, and most of the weight of the sleeve 5, the slide rod 16, the nozzle 3 and part of the spraying water pipe 12 is borne by the belt 2.

[0051] When the distance between the tree species and the nozzle 3 is large or the tree species is at a high height, the operator presses the pressure rod 27 with his thumb until the limit column 35 on the pressure rod 27 abuts against the outer wall of the sleeve 5 and the pressure plate 28 on the pressure rod 27. At this time, the triangular piece on the pressure rod 27 is disengaged from the limit slot 17, and the limit slot 17 is a triangular slot body adapted to the triangular piece. At this time, the slide bar 16 loses the limit of the triangular piece under the elastic force of the spring 1 42, and the slide bar 16 slides out of the sleeve 5 until the stopper 18 on the slide bar 16 is abutted by the front end of the slide slot 25. At this time, the spring 1 42 is still in a compressed state, so that the slide bar 16 remains in an extended state, so as to achieve the effect of extending the distance between the operator of the nozzle 3 and the nozzle 3. When the distance between the tree species and the nozzle 3 is large or the height of the tree species is high, the quality of the drug spraying can be effectively guaranteed, and the drug sprayed from the nozzle 3 can be prevented from reaching the tree species when the distance between the tree species and the nozzle 3 is large or the height of the tree species is high.

[0052] When the nozzle 3 does not need to be extended any more, the operator turns the limiting screw 37 to disengage the hole slot 43 and slides the sleeve 5 backward. During this process, the slide bar 36 slides along the limiting strip slot 24 until the slide bar 36 abuts against the front end of the limiting strip slot 24. At this time, the operator can hold the slide bar 16 and push the slide bar 16 to slide back into the sleeve 5 until the cylindrical member 4 abuts against the sleeve 5. At this time, under the elastic force of the spring 2 30, the triangular member on the pressure rod 27 is clamped in the limiting clamping slot 17 again, so that the sleeve 5 and the slide bar 16 remain in the state before extension. At this time, the sleeve 5 is slid forward again until the slide bar 36 abuts against the rear end of the limiting strip slot 24, and then the limiting screw 37 is reversed to insert it into the hole slot 43 to complete the shortening of the nozzle 3. The operator can complete the whole process quickly by himself without disassembly, thereby improving the efficiency of switching the nozzle 3.

[0053] During the use of the present invention, the whole process can be completed quickly by an operator alone, and the spraying efficiency is guaranteed.

[0054] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A drug spraying device for forestry tree species maintenance, comprising a device carrier (1) and a spraying water pipe (12), characterized in that: The drug spraying device for forestry tree species maintenance also includes a wearing mechanism and a holding mechanism; The wearing mechanism comprises a sliding sleeve (6) and a waist belt (2), and the holding mechanism comprises a sleeve (5) and a sliding rod (16); A spray head (3) is installed at the end of the spray water pipe (12), and a pair of limit rings (11) are fixedly installed on one side of the outer wall of the spray water pipe (12) close to the spray head (3); A connecting mechanism is installed at the rear end of the sleeve (5), and the connecting mechanism includes a sleeve ring (34) with a notch; A cylindrical member (4) is fixed to the front end of the slide bar (16), and a limit slot (17) and two stoppers (18) are provided on the slide bar (16); An arc-shaped piece (33) and two round rods (29) are fixed to the upper end of the sleeve (5) tube surface, a support pad (31) is fixedly connected to the top of each round rod (29), a pressing piece (28) is movably sleeved between the two round rods (29), a spring 2 (30) is movably sleeved on each round rod (29), the spring 2 (30) is located between the support pad (31) and the pressing piece (28), a pair of connecting pieces (32) are fixedly connected to the arc-shaped piece (33), and a pressing rod (27) is rotatably connected between the two connecting pieces (32); The pressure rod (27) is a stepped structure, a triangular piece is fixed to the bottom surface of the front end of the pressure rod (27), two limit columns (35) are fixedly connected to the middle part of the pressure rod (27), and the upper surface of the front end of the pressure rod (27) abuts against the pressure plate (28).

2. A drug spraying device for forestry tree species maintenance as claimed in claim 1, characterized in that: The sliding sleeve (6) is sleeved on the waist belt (2), a fixing seat (9) is fixed on the sliding sleeve (6), a shaft member (8) composed of two cylinders with different diameters is fixed to the middle part of the fixing seat (9), a ring (10) is also fixed on the fixing seat (9), and a semicircular member (7) is movably fitted on the fixing seat (9); The semicircular member 1 (7) is provided with an arc-shaped clamping groove (14) and a special-shaped clamping groove (15). The semicircular member 1 (7) is also fixedly connected with four positioning seats (13). The arc-shaped clamping groove (14) is movably clamped with a clamping ring (10), and the special-shaped clamping groove (15) is clamped with a shaft member (8).

3. A drug spraying device for forestry tree species maintenance as claimed in claim 2, characterized in that: A connecting seat (46) is fixed to the upper end of the cylindrical member (4), a semicircular ring (20) and a threaded column (19) are fixed to the connecting seat (46), a semicircular ring (20) is attached to the semicircular ring (20), a movable seat (23) is attached to the connecting seat (46), a hole is opened on the movable seat (23) for movably sleeved with the threaded column (19), and a nut (21) is threadedly sleeved on the threaded column (19); The bottom of the movable seat (23) is attached to the surface of the cylindrical member (4), the complete ring body composed of two semicircular rings (20) is sleeved with the spray water pipe (12), and the complete ring body composed of the two semicircular rings (20) is located between the two limiting rings (11).

4. A drug spraying device for forestry tree species maintenance as claimed in claim 3, characterized in that: The sleeve (5) has a strip groove (26), a hole groove (43), two slide grooves (25) and four limit strip grooves (24) on its surface; a sealing plate (45) is fixed at the rear end of the sleeve (5); a partition plate (44) is fixedly connected to the inner wall of the sleeve (5); and a spring (42) is fixedly connected between the partition plate (44) and the slide rod (16); The same connecting seat (46) is fixed on the tube surface at the rear end of the sleeve (5), and the same threaded column (19), movable seat (23), nut (21) and two semicircular rings (20) are installed on the connecting seat (46) located on the sleeve (5), and the sleeve (5) is movably connected with the slide rod (16).

5. A drug spraying device for forestry tree species maintenance as claimed in claim 4, characterized in that: Four slide bars (36) are fixedly installed on the inner wall of the collar (34), and the four slide bars (36) are respectively movably clamped in the four limit bar grooves (24). The two sides of the outer wall of the collar (34) are respectively fixedly connected with a side rectangular seat (38) and a side cylindrical seat (39). A semicircular part 2 (40) is fixed on the side cylindrical seat (39), and a special-shaped clamping groove (15) is also opened on the semicircular part 2 (40). Four positioning grooves (47) are also opened on the semicircular part 2 (40); The groove body formed by the two special-shaped grooves (15) is the same size as the shaft member (8), and threads are provided on the surfaces of the side cylindrical seat (39) and the two special-shaped grooves (15).

6. A drug spraying device for forestry tree species maintenance as claimed in claim 5, characterized in that: The side rectangular seat (38) and the collar (34) are threadedly sleeved with a limiting screw (37), and the limiting screw (37) is inserted into the hole groove (43).

7. A drug spraying device for forestry tree species maintenance as claimed in claim 6, characterized in that: The two semicircular rings (20) on the sleeve (5) are sleeved with the water spraying pipe (12), and the four positioning grooves (47) are respectively plugged with the four positioning seats (13).

8. A drug spraying device for forestry tree species maintenance as claimed in claim 7, characterized in that: A threaded sleeve is provided on the side cylindrical seat (39) and a threaded ring (41) is provided.

9. A drug spraying device for forestry tree species maintenance as claimed in claim 8, characterized in that: The triangular piece at the front end of the pressure rod (27) is clamped in the limit clamping groove (17).

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