An adjustable crawler sprayer adapted to different soil hardnesses

Abstract

The present invention relates to the field of field spraying, and specifically to an adjustable crawler sprayer adapted to different soil hardnesses, comprising: the crawler body comprises two groups of side crawlers arranged on both sides of the bottom of the sprayer body, the side crawlers comprise two sub-crawlers and a median platform located in the middle of the two sub-crawlers, the sub-crawlers are slidably connected to the outside of the median platform, a driving shaft and a driven shaft are arranged at both ends of the inside of the sub-crawler and the median platform, and inner supports are arranged inside the sub-crawlers. In this solution, when the equipment sinks or slips in a soft or smooth environment such as sand or ice, the ground contact area of ​​the side crawlers can be changed through a movable mechanism through a sensing mechanism or manual control, and the pressure can be dispersed by increasing the ground contact area, so that the equipment can move more easily on soft ground, and the running of the crawler on narrow roads can also be facilitated by reducing the ground contact area.

Description

Technical Field

[0001] The invention relates to the field of field spraying, and in particular to an adjustable crawler sprayer adapted to different soil hardnesses. Background Art

[0002] A sprayer is a type of agricultural machinery that mixes water and liquid medicine and then sprays the liquid onto the surface of an object under pressure. It is a type of agricultural pesticide application machinery. There are roughly several types of sprayers, the main ones are: boom sprayers. According to the way they move, sprayers can be preliminarily divided into crawler types and tire types. Compared with tire sprayers, crawler sprayers have a larger contact area on soft ground, are not easy to sink, and have stronger adaptability to the environment.

[0003] In traditional crawler sprayers, the tracks on both sides of the sprayer are fixed, and the width of a single track cannot be adjusted. During the driving process of the equipment, there is an upper limit to the contact area of ​​the track. Once the equipment sinks or slips on soft or smooth ground such as sand or ice, the movement of the equipment will be affected, and there will be phenomena such as slipping and steering loss of control. For this reason, we proposed an adjustable crawler sprayer that is suitable for different soil hardnesses. Summary of the invention

[0004] The object of the present invention is to provide an adjustable crawler sprayer adapted to different soil hardnesses, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, an adjustable crawler sprayer adapted to different soil hardnesses comprises:

[0006] A sprayer body, wherein a crawler assembly is installed at the bottom of the sprayer body;

[0007] A crawler assembly, the crawler assembly comprising a crawler body, a sensing mechanism, a movable mechanism, a chassis cover and a cleaning mechanism;

[0008] A crawler body, wherein the crawler body comprises two sets of side crawlers arranged on both sides of the bottom of the sprayer body, the side crawlers comprise two sub-crawlers and a middle platform located in the middle of the two sub-crawlers, the sub-crawlers are slidably connected to the outside of the middle platform, the inner ends of the sub-crawlers and the middle platform are provided with driving shafts and driven shafts, and the inner parts of the sub-crawlers are provided with inner supports;

[0009] A sensing mechanism, the sensing mechanism is located inside the sub-track and is used to detect the softness of the ground soil;

[0010] A movable mechanism, the movable mechanism is located inside the side crawler, and the movable mechanism is used to push the two sub-crawlers away from or close to the middle platform to unfold the side crawler;

[0011] The cleaning mechanism is located inside the chassis cover and above the side close to the forward direction of the crawler body. The cleaning mechanism is used to sweep the soil on the surface of the crawler track away from the center platform.

[0012] Furthermore, the sensing mechanism includes an air cavity and an elastic member. The air cavities are arranged on the inner side of the sub-track and distributed along the center line of the side track. The outer wall of the sub-track is provided with a plurality of evenly distributed elastic members on one side of the air cavity. One end of the elastic member is connected to the interior of the air cavity, and an air pressure sensor is installed inside the air cavity.

[0013] Furthermore, the movable mechanism includes a motor, a driving shaft, a second driven shaft and a screw barrel. The motor is installed inside the center platform. The output shaft of the center platform is fixedly connected to the driving shaft. The outer wall of the driving shaft is rotatably connected to the second driven shaft by means of helical gear meshing. A screw barrel is installed at one end of the inner support inside the sub-track. The two sides of the second driven shaft are respectively threadedly connected to the two screw barrels, and the threads on both sides of the second driven shaft are set in opposite directions.

[0014] Furthermore, the cleaning mechanism includes a toothed belt, a first driven wheel, a second driven wheel, a third driven shaft, a fourth driven shaft and a brush belt. The toothed belt is slidably connected to the middle part of the mid-level platform. One end of the mid-level platform is meshed with the first driven wheel, one end of the first driven wheel is meshed with the second driven wheel, the middle part of the second driven wheel is rotatably connected to the third driven shaft via a belt, one end of the third driven shaft is rotatably connected to the fourth driven shaft via a helical gear meshing, and the outer wall of the fourth driven shaft is rotatably connected to the brush belt.

[0015] Furthermore, the movable mechanism includes a fixing member, and one end of the driving shaft or the second driven shaft is rotatably connected to the inside of the fixing member.

[0016] Furthermore, the lowest height of the lower end of the toothed belt matches the lowest height of the side track, and the first driven wheel, the second driven wheel, the third driven shaft and the brush belt are all located inside the chassis cover.

[0017] Furthermore, mud discharge gaps are arranged on both sides of the chassis cover, close to the sub-track and away from the center platform, and the length of the brush belt matches the length of the sub-track and the movable distance.

[0018] Furthermore, the surface of the median platform is a smooth surface, and the two sub-tracks are at equal distances from the toothed belts in the middle of the median platform on both sides of the median platform.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In this solution, when the equipment sinks or slips on soft or smooth ground such as sand or ice, the ground contact area of ​​the side tracks can be changed through the movable mechanism by means of sensing mechanism or manual control. By increasing the ground contact area, the pressure is dispersed, making it easier for the equipment to move on soft ground. By reducing the ground contact area, it is also convenient for the tracks to travel on narrow roads.

[0021] 2. In this scheme, when the side tracks move, the toothed belt will rotate in the forward direction together with the center platform, thereby driving the first driven wheel to rotate and driving the second driven wheel to rotate through the first driven wheel, and the third driven shaft is kept rotating through the second driven wheel, and then the fourth driven shaft and the brush belt are driven by the third driven shaft to rotate to sweep the mud on the surface of the center platform to the outside, and the contaminated mud can be removed synchronously with the movement of the side tracks, maintaining the linkage and following the movement and stopping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic elevation view of an adjustable crawler sprayer adapted to different soil hardnesses according to the present invention;

[0023] Figure 2 It is a schematic diagram of the upper view of the middle side crawler surface and the internal structure of an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0024] Figure 3 It is a schematic diagram of the side structure of the middle crawler of an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0025] Figure 4 This is an enlarged schematic diagram of point A in an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0026] Figure 5 This is an enlarged schematic diagram of point B in an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0027] Figure 6 This is an enlarged schematic diagram of point C in an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0028] Figure 7 It is a schematic diagram of the contact relationship between the toothed belt, the first driven wheel, the second driven wheel and the third driven shaft in an adjustable crawler sprayer adapted to different soil hardnesses of the present invention;

[0029] Figure 8 The present invention is a schematic diagram of the transmission direction of a cleaning mechanism in an adjustable crawler sprayer adapted to different soil hardnesses.

[0030] In the figure:

[0031] 1. Sprayer body; 2. Track assembly; 21. Track body; 211. Side tracks; 212. Sub-tracks; 213. Center platform; 214. Driving shaft; 215. Driven shaft; 22. Sensing mechanism; 221. Air cavity; 222. Elastic member; 23. Movable mechanism; 231. Motor; 232. Driving shaft; 233. Second driven shaft; 234. Screw barrel; 235. Fixing member; 24. Chassis cover; 25. Cleaning mechanism; 251. Toothed belt; 252. First driven wheel; 253. Second driven wheel; 254. Third driven shaft; 255. Fourth driven shaft; 256. Brush belt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0033] An adjustable crawler sprayer adapted to different soil hardnesses, such as Figure 1-8 As shown, it includes: a sprayer body 1 and a track assembly 2;

[0034] A crawler assembly 2 is installed at the bottom of the sprayer body 1, and the crawler assembly 2 includes a crawler body 21, a sensing mechanism 22, a movable mechanism 23, a chassis cover 24 and a cleaning mechanism 25;

[0035] The crawler body 21 includes two sets of side crawlers 211 arranged on both sides of the bottom of the sprayer body 1, and the side crawlers 211 include two sub-crawlers 212 and a middle platform 213 located in the middle of the two sub-crawlers 212. The sub-crawler 212 is slidably connected to the outside of the middle platform 213. The inner ends of the sub-crawler 212 and the middle platform 213 are provided with a driving shaft 214 and a driven shaft 215, and the inner parts of the sub-crawler 212 are all provided with internal supports;

[0036] The sensing mechanism 22 is located inside the crawler track 212, and is used to detect the softness of the ground soil;

[0037] The movable mechanism 23 is located inside the side crawler 211, and is used to push the two sub-crawlers 212 away from or close to the middle platform 213, so that the side crawler 211 is unfolded;

[0038] The cleaning mechanism 25 is located inside the chassis cover 24 and above the side close to the forward direction of the crawler body 21 . The cleaning mechanism 25 is used to sweep the soil on the surface of the sub-crawler 212 away from the middle platform 213 .

[0039] Specifically, the sensing mechanism 22 includes an air cavity 221 and an elastic member 222. The air cavities 221 are arranged on the inner side of the sub-track 212 and distributed along the center line of the side track 211. The outer wall of the sub-track 212 is provided with a plurality of evenly distributed elastic members 222 on one side of the air cavity 221. One end of the elastic member 222 is connected to the interior of the air cavity 221, and an air pressure sensor is installed inside the air cavity 221.

[0040] It is understandable that during the movement of the equipment, a certain number of elastic members 222 are always in contact with the ground, and some of the elastic members 222 are slightly pressed back into the air cavity 221. During the process, the volume inside the air cavity 221 becomes lower, resulting in changes in air pressure that are detected by the air pressure sensor. For example, in a sandy environment, the ground is soft and the pressure on the elastic member 222 is insufficient. At this time, the air pressure sensor sends a signal to the movable mechanism 23, causing the sub-tracks 212 to move to both sides of the median platform 213, so that the bottom of the median platform 213 that is exposed as the sub-tracks 212 move can also contact the ground. By increasing the ground contact area, the pressure is dispersed, making it easier for the equipment to move on soft ground. It should be noted that the movable mechanism 23 can be actively opened or closed by a button control on the sprayer body 1 to adapt to the ice environment and facilitate manual control.

[0041] Specifically, the movable mechanism 23 includes a motor 231, a drive shaft 232, a second driven shaft 233 and a screw barrel 234. The motor 231 is installed inside the center platform 213. The output shaft of the center platform 213 is fixedly connected to the drive shaft 232. The outer wall of the drive shaft 232 is rotatably connected to the second driven shaft 233 by means of helical gear meshing. A screw barrel 234 is installed at one end of the inner support inside the sub-track 212. The two sides of the second driven shaft 233 are respectively threadedly connected to the two screw barrels 234, and the threads on both sides of the second driven shaft 233 are set in opposite directions.

[0042] It can be understood that after the motor 231 is started, the driving shaft 232 is controlled to rotate, and the rotation of the driving shaft 232 causes the second driven shaft 233 to rotate accordingly. The second driven shaft 233 controls the two screw barrels 234 to shrink or expand at the same time through the reverse threads on both sides to change the ground contact area of ​​the side track 211.

[0043] Specifically, the cleaning mechanism 25 includes a toothed belt 251, a first driven wheel 252, a second driven wheel 253, a third driven shaft 254, a fourth driven shaft 255 and a brush belt 256. The toothed belt 251 is slidably connected to the middle part of the center platform 213. One end of the center platform 213 is meshed with the first driven wheel 252, one end of the first driven wheel 252 is meshed with the second driven wheel 253, the middle part of the second driven wheel 253 is rotatably connected to the third driven shaft 254 through a belt, one end of the third driven shaft 254 is rotatably connected to the fourth driven shaft 255 through a helical gear meshing manner, and the outer wall of the fourth driven shaft 255 is rotatably connected to the brush belt 256.

[0044] like Figure 8 As shown, it can be understood that when the side track 211 moves, the toothed belt 251 will rotate in the forward direction together with the center platform 213, thereby driving the first driven wheel 252 to rotate and driving the second driven wheel 253 to rotate through the first driven wheel 252, and the third driven shaft 254 is kept rotating through the second driven wheel 253, and then the fourth driven shaft 255 and the brush belt 256 are driven to rotate through the third driven shaft 254 to sweep the soil on the surface of the center platform 213 to the outside.

[0045] The movable mechanism 23 includes a fixing member 235 , and one end of the driving shaft 232 or the second driven shaft 233 is rotatably connected to the inside of the fixing member 235 . The fixing member 235 can help fix the positions of the driving shaft 232 and the second driven shaft 233 .

[0046] Among them, the lowest height of the lower end of the toothed belt 251 is adapted to the lowest height of the side track 211 to facilitate contact with the ground. The first driven wheel 252 , the second driven wheel 253 , the third driven shaft 254 and the brush belt 256 are all located inside the chassis cover 24 .

[0047] Specifically, mud discharge gaps are provided on both sides of the chassis cover 24, close to the sub-track 212 and away from the middle platform 213, to facilitate the sliding of the swept mud and avoid mud sticking, so as to reduce the weight of the equipment. The length of the brush belt 256 matches the length of the sub-track 212 and the active distance to complete comprehensive cleaning.

[0048] Specifically, the surface of the median platform 213 is a smooth surface, which reduces the resistance to the equipment when it contacts the ground. The two sub-tracks 212 are equidistant from the toothed belt 251 in the middle of the median platform 213 on both sides of the median platform 213 to maximize the use of the surface space of the median platform 213.

[0049] Working principle: When the equipment is spraying and driving, since there are always a certain number of elastic members 222 in contact with the ground, some of the elastic members 222 are pressed back into the air cavity 221 slightly. During the process, the volume inside the air cavity 221 becomes lower, resulting in air pressure changes that are detected by the air pressure sensor. For example, in a sandy environment, the ground is soft and the pressure on the elastic member 222 is insufficient. At this time, the air pressure sensor sends a signal to the movable mechanism 23. After the motor 231 in the movable mechanism 23 is started, the drive shaft 232 is controlled to rotate. The rotation of the drive shaft 232 then causes the second driven shaft 233 to rotate accordingly. The second driven shaft 233 controls the two screw barrels 234 to shrink or expand at the same time through the reverse threads on both sides to change the ground contact area of ​​the side crawler 211. By increasing the ground contact area, the pressure is dispersed, making it easier for the equipment to move on soft ground. By reducing the ground contact area, it is also convenient for the crawler to travel on narrow roads.

[0050] Among them, when the side track 211 moves, the toothed belt 251 rotates in the forward direction together with the center platform 213, thereby driving the first driven wheel 252 to rotate and driving the second driven wheel 253 to rotate through the first driven wheel 252, and the third driven shaft 254 is kept rotating through the second driven wheel 253, and then the fourth driven shaft 255 and the brush belt 256 are driven to rotate through the third driven shaft 254 to sweep the soil on the surface of the center platform 213 to the outside.

[0051] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. An adjustable crawler sprayer adapted to different soil hardnesses, characterized in that: include: A spray machine body (1), wherein a crawler assembly (2) is installed at the bottom of the spray machine body (1); A crawler assembly (2), the crawler assembly (2) comprising a crawler body (21), a sensing mechanism (22), a movable mechanism (23), a chassis cover (24) and a cleaning mechanism (25); A crawler body (21), the crawler body (21) comprising two sets of side crawlers (211) arranged on both sides of the bottom of the sprayer body (1), the side crawlers (211) comprising two sub-crawlers (212) and a center platform (213) located in the middle of the two sub-crawlers (212), the sub-crawlers (212) being slidably connected to the outside of the center platform (213), the sub-crawlers (212) and the center platform (213) being provided with driving shafts (214) and driven shafts (215) at both ends inside, and the sub-crawlers (212) being provided with internal supports inside. A sensing mechanism (22), the sensing mechanism (22) being located inside the crawler track (212), and the sensing mechanism (22) being used to detect the softness of the ground soil; A movable mechanism (23), the movable mechanism (23) being located inside the side crawler (211), the movable mechanism (23) being used to push the two sub-crawlers (212) away from or close to the middle platform (213), so that the side crawler (211) is unfolded; A cleaning mechanism (25), the cleaning mechanism (25) being located inside the chassis cover (24) and above the side of the crawler body (21) in the forward direction, the cleaning mechanism (25) being used to sweep the soil on the surface of the sub-crawler (212) to the side away from the center platform (213); the sensing mechanism (22) comprising an air cavity (221) and an elastic member (222), the air cavity (221) being arranged on the inner side of the sub-crawler (212) and distributed along the center line of the side crawler (211), the outer wall of the sub-crawler (212) being provided with a plurality of uniformly distributed elastic members (222) on one side of the air cavity (221), one end of the elastic member (222) being connected to the inside of the air cavity (221), the air cavity (221) being arranged to move the soil away from the center platform (213); 221) is provided with an air pressure sensor inside; the movable mechanism (23) comprises a motor (231), a drive shaft (232), a second driven shaft (233) and a screw barrel (234); the motor (231) is provided inside the center platform (213); the output shaft of the center platform (213) is fixedly connected with the drive shaft (232); the outer wall of the drive shaft (232) is rotatably connected with the second driven shaft (233) by means of helical gear meshing; a screw barrel (234) is provided at one end of the inner support inside the sub-track (212); the two sides of the second driven shaft (233) are respectively threadedly connected with the two screw barrels (234); and the threads on the two sides of the second driven shaft (233) are arranged in opposite directions.

2. The adjustable crawler sprayer adapted to different soil hardness according to claim 1, characterized in that: The cleaning mechanism (25) comprises a toothed belt (251), a first driven wheel (252), a second driven wheel (253), a third driven shaft (254), a fourth driven shaft (255) and a brush belt (256); the toothed belt (251) is slidably connected to the middle part of the center platform (213); one end of the center platform (213) is meshed with the first driven wheel (252); one end of the first driven wheel (252) is meshed with the second driven wheel (253); the middle part of the second driven wheel (253) is rotatably connected to the third driven shaft (254) via a belt; one end of the third driven shaft (254) is rotatably connected to the fourth driven shaft (255) via a helical gear meshing; the outer wall of the fourth driven shaft (255) is rotatably connected to the brush belt (256).

3. The adjustable crawler sprayer adapted to different soil hardness according to claim 1, characterized in that: The movable mechanism (23) comprises a fixing member (235), and one end of the driving shaft (232) or the second driven shaft (233) is rotatably connected to the interior of the fixing member (235).

4. The adjustable crawler sprayer adapted to different soil hardness according to claim 2, characterized in that: The lowest height of the lower end of the toothed belt (251) matches the lowest height of the side track (211), and the first driven wheel (252), the second driven wheel (253), the third driven shaft (254) and the brush belt (256) are all located inside the chassis cover (24).

5. The adjustable crawler sprayer adapted to different soil hardness according to claim 4, characterized in that: Mud discharge gaps are provided on both sides of the chassis cover (24) close to the sub-tracks (212) and away from the middle platform (213), and the length of the brush belt (256) matches the length and movable distance of the sub-tracks (212).

6. The adjustable crawler sprayer adapted to different soil hardness according to claim 2, characterized in that: The surface of the middle platform (213) is a smooth surface, and the two sub-tracks (212) are equidistant from the toothed belt (251) in the middle of the middle platform (213) on both sides of the middle platform (213).

Images