CN210646902U - A rainfall shower nozzle structure for simulating stony desertification device - Google Patents

Abstract

The utility model discloses a rainfall sprinkler structure for simulating stony desertification device, set up the boss through the back at current shower nozzle body, and articulate the connector through the pivot on the boss, and swing round the pivot through first motor drive shower nozzle body, and the connector passes through rotary joint and pipe joint and is connected, and be equipped with first gear in the connector outside, the second motor passes through second gear and first gear engagement, make control second motor rotate, can control the shower nozzle body and rotate round rotary joint, combine the shower nozzle body round pivot wobbling structure, the hole for water spraying of realization shower nozzle body can be angle regulation in all directions.

Description

A rainfall shower nozzle structure for simulating stony desertification device

Technical Field

The utility model relates to a check out test set technical field, in particular to a rainfall shower nozzle structure for simulating stony desertification device.

Background

Due to the nature uncontrollable nature of the natural rainfall event, certain limitations are generated on the research on the soil erosion mechanism and law under the rainfall condition, so that the related soil erosion research work cannot be further and deeply developed. With the continuous update of new technology and new method in the field of soil erosion research, the artificial rainfall simulation test has gradually become an important means for researchers at home and abroad to develop soil erosion rules.

The existing spray head realizes the acceleration spraying of water pressure through a Venturi principle, but the existing spray head can only spray in a set direction, and the spray direction and the included angle between the spray direction and the horizontal plane cannot be automatically adjusted after the spray head is installed. Chinese patent CN201620217416.3 discloses a swinging sprinkler head sprinkling irrigation mechanism for simulating natural rainfall, which utilizes a swinging link mechanism composed of a driving motor, a crank and a link assembly to drive a sprinkler head to swing, but the sprinkler head can only swing in one direction but not in other directions, so that the sprinkler head can not adjust the sprinkling distance and angle, and the sprinkler head can not simulate a more complicated rainfall environment.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art's weak point, an object of the utility model is to provide a rainfall shower nozzle structure for simulating stony desertification device, aim at solving among the prior art shower nozzle can not adjust spray distance and angle, can not simulate out the problem of more complicated rainfall environment.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a rainfall spray head structure for simulating a stony desertification device comprises an array type spray head body and a boss arranged on the water outlet end face of the spray head body, wherein a rotating shaft is rotatably connected to the boss, a first motor is connected to one end of the rotating shaft, the first motor is fixed to the spray head body, a connector is fixedly connected to the middle of the rotating shaft, an L-shaped channel is arranged on the connector, a rotating joint is connected to the axis end of the connector of the L-shaped channel, the other end of the rotating joint is connected with a pipeline joint, a fixing plate is fixedly connected to the pipeline joint, a hose is connected to one end, far away from the rotating joint, of the L-shaped channel, and the other end of the hose is; the outer side of the connector is fixedly connected with a first gear, the side surface of the first gear is meshed with a second gear, the center of the second gear is connected with a second motor, and the second motor is fixed on the lower end face of the fixing plate.

A rainfall shower nozzle structure for simulating stony desertification device in, the connector includes the first end of being connected with the pivot and the second end of being connected with rotary joint, L shape passageway is established on the second end.

In the rainfall sprayer structure for simulating the stony desertification device, two bosses are arranged and symmetrically arranged at two sides of the first end part.

A rainfall shower nozzle structure for simulating stony desertification device in, first end is the cuboid form, and is equipped with the full fillet in the one end of keeping away from the second end.

In the rainfall sprayer structure for simulating the stony desertification device, the first gear is fixed on the outer surface of the second end part and is concentrically arranged with the second end part.

In the rainfall sprayer structure for simulating the stony desertification device, the plane of the hose is vertical to the axis of the rotating shaft.

Has the advantages that:

the utility model provides a rainfall sprinkler structure for simulating stony desertification device, set up the boss through the back at current shower nozzle body, and articulate the connector through the pivot on the boss, and swing round the pivot through first motor drive shower nozzle body, and the connector passes through rotary joint and pipe joint and is connected, and be equipped with first gear in the connector outside, the second motor passes through second gear and first gear engagement, make control second motor rotate, can control the shower nozzle body and rotate round rotary joint, combine the shower nozzle body round pivot wobbling structure, the hole for water spraying of realization shower nozzle body can be angle regulation in all directions.

Drawings

FIG. 1 is a schematic diagram of a simulated stony desertification device.

Fig. 2 is a schematic structural view of a first embodiment of a soil level adjustment structure.

Fig. 3 is a schematic structural view of a second embodiment of the soil level adjustment structure.

Fig. 4 is a structural schematic diagram of the stent.

Fig. 5 is a schematic structural view of a third embodiment of the telescopic rod shown in fig. 4.

Fig. 6 is a schematic structural view of a fourth embodiment of the telescopic rod shown in fig. 4.

Fig. 7 is a schematic structural view of the showerhead.

Fig. 8 is a front view of the sprinkler head shown in fig. 7.

Fig. 9 is a left side view of the sprinkler head shown in fig. 7.

Detailed Description

The utility model provides a rainfall sprinkler structure for simulating stony desertification device, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the embodiment is compared with the figure below to refer to the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a partial cross-sectional view of a water sand measuring device 2 inside a box. The device for simulating stony desertification comprises a water inlet pipe 7, a water separator 9, a water distribution pipe 12, a support 6 and a spray head 5, wherein one end of the water inlet pipe 7 is connected with a water source, the other end of the water inlet pipe is connected with the water inlet end of the water separator 9, a water pump 8 is connected to the water inlet pipe 7 in series, one end of the water distribution pipe 12 is fixed to the water outlet end of the water separator 9, the middle of the water distribution pipe is fixed to the support 6, and the tail end of the water distribution pipe 12. Wherein, when this simulation stony desertification device was used in the field, this water source can be near river or pond, and when indoor use, this water source can be the water tank. The water source is pressurized by a water pump 8, water at a water source is pumped to a water distributor 9 through a water inlet pipe 7, the water distributor 9 enables the water to flow to the spray head 5 from different water outlet ends through a water distribution pipe 12, and the spray head 5 is sprayed out, so that artificial rainfall during the simulation of stony desertification is realized.

Be connected with governing valve 10 and water pressure detector 11 between the play water end of water knockout drum 9 and distributive pipe 12, and governing valve 10 fixes the play water end at water knockout drum 9, water pressure detector 11 fixes the play water end at governing valve 10, shower nozzle 5 below is connected with accepts basin 41, it has the cystosepiment 42 of taking the pore to accept the tiling of basin 41 upper end, and it has experimental earth to cover above cystosepiment 42, the pore of cystosepiment 42 can be through water and fine sand and mud, it is equipped with box 3 to accept basin 41 below, the inside water sand measuring ware 2 that is equipped with of box 3, water sand measuring ware 2 electricity is connected with treater 1. Specifically, when the spray head 5 sprays water to the test soil, the test soil can generate soil erosion under the action of the simulated rainwater sprayed by the spray head 5, the lost water and soil fall into the box body 3, the water and soil entering the box body 3 are detected by the water and sand measuring device 2, the processor 1 analyzes the water and soil loss condition of the test soil under the action of corresponding rainwater, wherein, the water and sand measuring device 2 is electrically connected with the processor 1 which is the existing device for water and soil loss, specifically referring to the portable dynamic monitor for water and soil loss disclosed in the Chinese patent CN201210019537.3, the water and sand measuring device usually adopts a rain measuring cylinder and a digital balance, for measuring the water and sand, the microprocessor 10 is provided with water and sand data acquisition and erosion modulus operation analysis software, of course, other detection devices capable of achieving the same function may be adopted, and the detection device is not protected in the present application, and therefore, the detailed description is omitted.

Reference is made to fig. 2 and 3, wherein fig. 2 and 3 are partially sectioned to see the structure inside the receiving basin 41. Specifically, experimental earth plane adjusts structure, including accepting basin 41, accept basin 41 upper end tiling has the cystosepiment 42 of taking the pore, and it has experimental earth to cover above cystosepiment 42, cystosepiment 42 border is equipped with carriage 43, and the height that highly is more than or equal to experimental earth of carriage 43, cystosepiment 42 border is equipped with carriage 43, carriage 43 below is equipped with first cylinder 44, and the lower extreme of first cylinder 44 is fixed in accepting basin 41, the side of carriage 43 and accept to leave the clearance between basin 41. The supporting frame 43 is used for fixing the foam board 42 and has a certain surrounding effect on the periphery of test soil, the first air cylinders 44 are used for supporting the supporting frame 43 to enable the supporting frame 43 to have a certain distance with the inner bottom surface of the receiving basin 41, and the foam board 42 can be in a plane or slope state by controlling different expansion and contraction amounts of the first air cylinders 44.

Referring to fig. 2, in the first embodiment, four first cylinders 44 are respectively disposed at four corners of the supporting frame 43, and cylinder ends of the first cylinders 44 are fixedly connected to the receiving basin 41, and piston rod ends of the first cylinders 44 are hinged to the supporting frame 43 through hinges 46, specifically, two adjacent first cylinders 44 of the supporting frame 43 are provided with transverse waist-shaped grooves 45, and the waist-shaped grooves 45 are disposed on opposite sides of the supporting frame 43, and the corresponding hinges 46 are connected to the waist-shaped grooves 45, so that when adjusting the inclination angle of the foam board 42, the supporting frame 43 rotates around an axis where a hinge point without the waist-shaped grooves 45 is located, and the other two hinge points rotate around the waist-shaped grooves 45 and move in the waist-shaped grooves 45, thereby adjusting the length difference and adjusting the inclination angle of the foam board 42. That is, the first cylinders 44 are respectively disposed at four corners of the supporting frame 43, and the expansion amount of two adjacent first cylinders 44 is controlled to be different from the expansion amount of the other two first cylinders 44, so that the heights of two sides of the supporting frame 43 are different, that is, the foam board 42 is inclined to form a slope state.

Referring to fig. 3, in the second embodiment, four first cylinders 44 are respectively disposed at four corners of the supporting frame 43, wherein one cylinder end of one first cylinder 44 is fixedly connected to the receiving basin 41, and the rod end of the piston is connected to the supporting frame 43 through a universal joint 47, and the other three first cylinders 44 are respectively hinged to the receiving basin 41, and the rod ends of the piston are respectively connected to the supporting frame 43 through universal joints 47. Therefore, with the first cylinder 44 whose cylinder end is fixedly connected to the receiving tub 41 as a fulcrum, the support frame 43 can only move up and down and rotate about the universal joint 47 at this position, but cannot move in other directions, and the first cylinder 44 at other positions, except for rotating at the universal joint 47, allows the corresponding first cylinder 44 to tilt to compensate for a displacement difference when the support frame 43 is adjusted to tilt because the cylinder end is hinged to the receiving tub 41. That is, the first cylinders 44 are respectively disposed at four corners of the supporting frame 43, and the expansion and contraction amount of each corresponding first cylinder 44 is respectively controlled, so that the heights of two sides or opposite corners of the supporting frame 43 are different, that is, the foam board 42 is inclined to form a slope state, and the slope state includes opposite-side inclination and opposite-corner inclination.

A gap is reserved between the side face of the supporting frame 43 and the bearing basin 41, the gap not only provides a moving space for the foam board 42 to be switched between a slope state and a plane state, but also can pass soil and water which are lost from the upper surface of test soil, and the lost soil and water can enter the box body 3 for detection.

In order to facilitate the introduction of the lost soil and water into the box body 3, the receiving basin 41 is funnel-shaped.

In order to support the basin 41 and the box 3, support legs 48 extend downward from four corners of the basin 41.

The water distribution pipes 12 are all telescopic hoses, so that the lifting of the telescopic rods is not influenced, and when the telescopic rods are in a contraction state, the water distribution pipes 12 cannot sag to occupy space and increase water resistance, and only part of the water distribution pipes 12 are drawn in fig. 1.

Preferably, a regulating valve 10 and a water pressure detector 11 are connected between the water outlet end of the water separator 9 and the water distribution pipe 12, the regulating valve 10 is fixed at the water outlet end of the water separator 9, the water pressure detector 11 is fixed at the water outlet end of the regulating valve 10, the detector is used for detecting the water pressure entering the spray head 5, and the regulating valve 10 is an electromagnetic valve used for regulating the water flow of the water distribution pipe 12.

Referring to fig. 4, wherein the bracket 6 includes a vertically arranged telescopic rod 61, the upper end of the telescopic rod 61 is provided with a horizontally arranged connecting rod 63, two ends of the connecting rod 63 are fixed with second cylinders 62, and the connecting rod 63 is hinged with the telescopic rod 61 through the second cylinders 62, specifically, the vertical supporting rod of the bracket 6 is made of the telescopic rod 61, so that the height of the bracket 6 can be controlled, the upper end of the telescopic rod 61 is hinged with the connecting rod 63 through the second cylinders 62, the cylinder body end of the second cylinders 62 is fixed with the connecting rod 63, and the piston rod end of the second cylinders 62 is hinged with the upper end of the telescopic rod 61, so that the connected telescopic rods 61 at two ends of the connecting rod 63 can be at different heights, i.e. the connecting rod 63 can be adjusted at an inclined position, wherein when the connecting rod 63 is adjusted to be inclined by a horizontal position, because the telescopic rods 61 at two ends are, the length difference of the connecting rod 63 is compensated by the extension amount of the second cylinder 62 so that the connecting rod 63 can be adjusted to the inclined position.

Specifically, in practical use, the electromagnetic valve is arranged on the air inlet/outlet of the second air cylinder 62, and after the support 6 is adjusted, the air pressure maintaining inside the second air cylinder 62 is realized by closing the electromagnetic valve, that is, the air pressure balance on two sides of the piston of the second air cylinder 62 is ensured, and the piston rod is prevented from moving relative to the cylinder body.

Referring to fig. 5 and 6, specifically, the telescopic rod 61 includes a first square pipe 602 and a second square pipe 601 inserted into the first square pipe 602 and movable up and down along the first square pipe 602, a connection bearing 611 is fixed inside a lower end of the first square pipe 602, the connection bearing 611 includes a bushing fixedly connected to the inside of the first square pipe 602 and a linear bearing fixed inside the bushing and connected to a screw rod 613, a ball bearing 612 is fixed inside a lower end of the second square pipe 601, and the screw rod 613 is connected to both the connection bearing 611 and the ball bearing 612. The screw rod 613 is rotatably connected to the lower end of the first square pipe 602 through a connecting bearing 611, the screw rod 613 is connected to the second square pipe 601 through a ball bearing 612 above the connecting bearing 611, so that when the rotary screw rod 613 rotates, the screw rod 613 can only rotate at the connecting bearing 611, the ball bearing 612 is engaged with the screw thread on the screw rod 613 to enable the ball bearing 612 to drive the second square pipe 601 to move up and down, and the adjustment of the extension length of the second square pipe 601 relative to the first square pipe 602, namely the height adjustment of the bracket 6 is realized.

Specifically, a first hinge member 618 is fixed on the upper end surface of the second square pipe 601, a second hinge member 617 is fixedly connected to the end of the piston rod of the second cylinder 62, and the first hinge member 618 is hinged to the second hinge member 617 through a bolt to form a hinge joint.

Specifically, a first gear 610 is fixed at the lower end of the screw rod 613 and below the connecting bearing 611, a second gear 69 is engaged and connected with the first gear 610, and the first gear 610 and the second gear 69 are preferably bevel gears. The center of second gear 69 is connected with drive shaft 619, and drive shaft 619 rotates and is connected with on first side's pipe 602, and drive shaft 619 is connected with driving motor 65, and driving motor 65 is fixed on the lateral surface of first side's pipe 602. Therefore, by controlling the rotation of the driving motor 65, the second gear 69 on the output shaft of the driving motor 65 drives the first gear 610 to rotate, so that the lead screw 613 rotates, and the height adjustment of the bracket 6 is realized.

Specifically, a first fixing block 68 is welded inside the first square pipe 602, a first through hole is formed in the center of the first fixing block 68, one end of the shaft sleeve is inserted into the first through hole, the other end of the shaft sleeve is connected with the first fixing block 68 through a screw, a second fixing block 67 is welded inside the second square pipe 601, a second through hole is formed in the center of the second fixing block 67, one end of the ball bearing 612 is inserted into the second through hole, and the other end of the ball bearing 612 is connected with the second fixing block 67 through a screw. The first fixing block 68 and the second fixing block 67 are horizontally laid in the first square pipe 602 and the second square pipe 601, respectively, and are used for connection of the lead screw 613, that is, the shaft sleeve is fixed on the first fixing block 68 through a screw, and the ball bearing 612 is fixed on the second fixing block 67 through a screw.

Referring to fig. 5, in the third embodiment, the outer wall surface of the second square pipe 601 is provided with the vertical sliding groove 616, the lower end of the sliding groove 616 is not communicated with the lower end surface of the second square pipe 601, and the inner wall surface of the upper end of the first square pipe 602 is provided with the latch 615 engaged with the sliding groove 616, so that after the second square pipe 601 rises to a certain range, the latch 615 is abutted to the lower end of the sliding groove 616, thereby realizing the limit and preventing the second square pipe 601 from sliding out of the first square pipe 602.

Referring to fig. 6, in the fourth embodiment, a sliding block 614 capable of sliding along the inside of the second square pipe 601 is fixedly connected to one end of the screw 613 away from the connecting bearing 611, and the shape of the sliding block 614 is matched with the inner surface of the second square pipe 601. Specifically, when the second square pipe 601 is lifted, the sliding block 614 slides along the inside of the second square pipe 601, because the outer surface of the second square pipe 601 is in sliding fit with the inner surface of the first square pipe 602, the sliding block 614 is in sliding fit with the inner surface of the second square pipe 601, and the shape and the size of the sliding block 614 are matched with the second square pipe 601, the two ends of the screw rod 613 are fixed by the sliding block 614 and the connecting bearing 611, so that the screw rod 613 is more stable, and the upper end of the screw rod 613 is prevented from shaking.

Further, the bracket 6 further comprises a cross beam 64 arranged longitudinally, and two ends of the cross beam 64 are fixedly connected to the connecting rod 63. Namely, the bracket 6 is mainly formed into a three-dimensional shape by the telescopic rod 61, the connecting rod 63 and the cross beam 64, and two ends of the cross beam 64 are fixed on the connecting rod 63, so that the adjustment of the connecting rod 63 to the inclined position is not influenced.

The pipe clamp 66 is mounted on the side surface of the first pipe 602 and the lower end surface of the connecting rod 63, and the pipe clamp 66 is an existing clamp or a binding hoop for fixing a pipe, preferably an existing plastic pipe clamp.

The spray heads 5 are uniformly fixed on the connecting rod 63, and the water distribution pipes 12 are all telescopic hoses, so that the lifting of the telescopic rods 61 is not influenced, and when the telescopic rods 61 are in a contraction state, the water distribution pipes 12 cannot sag to occupy space and increase water resistance.

Referring to fig. 7, 8 and 9, the head 5 includes an array type head body 51 and a boss 511 provided on a water outlet end surface of the head body 51, wherein the array type head body 51 is the conventional head 5, and a plurality of water spray holes are uniformly arrayed on a water storage end surface, so that a plurality of raindrops can be formed at the same time. The boss 511 is disposed on the back of the nozzle body 51 and integrally formed with the housing of the nozzle body 51, the boss 511 is rotatably connected with a rotating shaft 510, one end of the rotating shaft 510 is connected with a first motor 52, the first motor 52 is fixed on the nozzle body 51, and the middle of the rotating shaft 510 is fixedly connected with a connector 53. Preferably, the bosses 511 are two and symmetrically disposed at both sides of the first end portion.

Specifically, the boss 511 is arranged on the back of the spray head body 51, the connecting head 53 is arranged between the two bosses 511, the connecting head 53 is hinged to the boss 511 through the rotating shaft 510, the connecting head 53 is fixedly connected with the rotating shaft 510, and the first motor 52 is fixedly connected with the shell of the spray head body 51, so that the first motor 52 is controlled to rotate, and the spray head body 51 can swing around the rotating shaft 510. When using promptly, control first motor 52 and rotate, can realize the contained angle of shower nozzle body 51 spun water droplet and horizontal plane for the simulation raindrop that forms can incline hits on experimental earth, and the angle is controllable.

The L-shaped channel 513 is arranged on the connector 53, the L-shaped channel 513 is connected with the rotary joint 55 at the axial line end of the connector 53, the axial line end of the connector 53 is one end coinciding with the axial line of the connector 53, the other end of the rotary joint 55 is connected with the pipeline joint 57, the pipeline joint 57 is fixedly connected with the fixing plate 56, one end of the L-shaped channel 513, which is far away from the rotary joint 55, is connected with the hose 512, and the other end of the hose 512 is connected with the water inlet of the nozzle body 51.

Specifically, the fixing plate 56 is used for connecting with the bracket 6, and the pipe joint 57 is used for connecting with a water inlet pipe, that is, the water diversion pipe 12, so that water in the water diversion pipe 12 can enter the interior of the nozzle body 51 from the pipe joint 57, the rotary joint 55, the L-shaped channel 513 and the hose 512, and then the water is sprayed out from the water spraying holes of the nozzle body 51 by using the venturi principle. The pipe joint 57 is connected to the L-shaped channel 513 through a rotary joint 55, and the rotary joint 55 is an existing connecting joint, so that the nozzle body 51 can rotate around the pipe joint 57, and the angle of the water spraying hole of the nozzle body 51 can be adjusted in all directions by combining the structure that the nozzle body 51 swings around the rotating shaft 510.

Specifically, a third gear 54 is fixedly connected to the outer side of the connecting head 53, the third gear 54 is coaxially arranged with the rotary joint 55, the third gear 54 is fixed on the outer surface of the connecting head 53, a fourth gear 59 is engaged and connected to the side surface of the third gear 54, a second motor 58 is connected to the center of the fourth gear 59, and the second motor 58 is fixed on the lower end surface of the fixing plate 56. Through controlling the rotation of the second motor 58, the fourth gear 59 fixedly sleeved on the output shaft of the second motor 58 can drive the third gear 54 to rotate, so as to further realize the rotating shaft 510 of the connector 53, so that the nozzle body 51 can rotate around the pipeline connector 57, and by combining the structure that the nozzle body 51 swings around the rotating shaft 510, the angle of the water spraying hole of the nozzle body 51 can be adjusted in all directions.

Specifically, the connector 53 includes a first end 532 connected to the rotating shaft 510 and a second end 531 connected to the rotating joint 55, the first end 532 is square and is used for hinging with the boss 511, for the first end 532 can better rotate around the axis of the rotating shaft 510 and make the structure compact, a full fillet is provided at one end far away from the second end 531, and the circle of the full fillet coincides with the axial direction of the rotating shaft 510. An L-shaped channel 513 is provided on the second end 531 for connection with the rotary joint 55, and a third gear 54 is fixed to an outer surface of the second end 531 and is disposed concentrically with the second end 531. Thus, L-shaped passage 513 does not interfere with movement of spray head body 51 and communication of spray head body 51 of a conduit with conduit fitting 57.

Preferably, the plane of the hose 512 is perpendicular to the axis of the rotating shaft 510, so that the nozzle body 51 does not generate a torque force to the hose 512 when swinging, but only generates a force of bending a square shape, and the hose 512 is not easily broken because the length of the hose 512 is larger than the diameter. Of course, when the swing range of the head main body 51 is set within the range of the torque direction deformation of the hose 512, the hose 512 may be set at other positions as long as the communication between the L-shaped passage 513 and the head main body 51 is achieved.

It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.

Claims (6)

1. A rainfall spray head structure for simulating a stony desertification device is characterized by comprising an array type spray head body and a boss arranged on the water outlet end face of the spray head body, wherein the boss is rotatably connected with a rotating shaft, one end part of the rotating shaft is connected with a first motor, the first motor is fixed on the spray head body, the middle part of the rotating shaft is fixedly connected with a connector, the connector is provided with an L-shaped channel, the axis end of the connector of the L-shaped channel is connected with a rotating joint, the other end of the rotating joint is connected with a pipeline joint, the pipeline joint is fixedly connected with a fixed plate, one end of the L-shaped channel far away from the rotating joint is connected with a hose, and the other end of the hose is connected; the outer side of the connector is fixedly connected with a first gear, the side surface of the first gear is meshed with a second gear, the center of the second gear is connected with a second motor, and the second motor is fixed on the lower end face of the fixing plate.

2. The rainfall sprayer structure for simulating a stony desertification apparatus of claim 1, wherein the connection head comprises a first end connected to the rotation shaft and a second end connected to the rotation joint, and the L-shaped passage is provided on the second end.

3. The rainfall sprayer structure for simulating a stony desertification apparatus according to claim 2, wherein the number of the bosses is two, and the bosses are symmetrically provided at both sides of the first end portion.

4. A rainfall sprayer structure for simulating a stony desertification device according to claim 3, wherein the first end portion is square and is provided with a full fillet at an end remote from the second end portion.

5. The rainfall sprayer structure for simulating a stony desertification apparatus of claim 2, wherein the first gear is fixed to an outer surface of the second end portion and is disposed concentrically with the second end portion.

6. A sprinkler structure for simulating a stony desertification apparatus according to claim 1, wherein the plane of the hose is perpendicular to the axis of the rotation shaft.

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