Sprinkler for landscaping

Abstract

The invention discloses a watering cart for landscaping, which belongs to the technical field of watering carts and comprises a cart body, a water tank is mounted on the cart body, a support is rotatably mounted on the cart body, a conveying pipe communicated with the water tank is arranged on the support, a water storage hopper is mounted at one end, away from the cart body, of the support, and a water outlet end of the conveying pipe corresponds to the water storage hopper. A water outlet is formed in the water storage hopper, water flowing out of the conveying pipe can be received by the water storage hopper, and water in the water storage hopper can be discharged through the water outlet; according to the watering cart, the water storage hopper is installed on the support, water in the water tank can be conveyed into the water storage hopper and directionally discharged to an effective irrigation area of trees, fixed-point precise irrigation of the greening trees is achieved, and water accumulation caused by the fact that a water source is sprayed to the road surface is avoided; the water storage hopper can temporarily store water flowing out of the water conveying pipe, and waste caused by continuous water discharging in the running process of the watering cart is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of watering carts, and specifically discloses a watering cart for landscaping. BACKGROUND

[0002] Landscaping is particularly important in urban construction and ecological environment protection, and can not only purify the air and regulate the climate, but also beautify the urban environment and improve the quality of life of residents. With the acceleration of urbanization, the area of urban landscaping is continuously expanding, and higher requirements are put forward for the efficiency and quality of landscaping maintenance work. In the landscaping maintenance work, watering irrigation with the help of a watering cart is a basic and high-frequency operation, which is directly related to the survival and growth state of plants. The watering cart plays a crucial role in the daily maintenance of urban landscaping, parks, green spaces, and road green belts.

[0003] For example, the patent with the publication number CN108633702B and the publication date of August 25, 2020 discloses a special watering cart for green belts, which includes a vehicle body provided with a water storage tank, a water pump, and a spraying device. The spraying device includes a frame, and the end of the frame away from the vehicle body is provided with a watering assembly. The watering assembly includes a cylindrical water distribution seat, and the end of the water distribution seat is provided with a coaxial water inlet hole. A plurality of water distribution holes are uniformly distributed on the outer circular surface of the water distribution seat and communicate with the water inlet hole. A rotary joint is coaxially installed on the water inlet hole of the water distribution seat and is fixed on the frame in the vertical direction. A watering steel pipe is installed on the water distribution hole of the water distribution seat and is arranged in the radial direction. The watering steel pipe is provided with a plurality of water spraying holes arranged in the length direction. The other end of the rotary joint is connected to the water pump through a pipeline. The end of the frame close to the vehicle body is hinged to the vehicle body, so that the frame can be rotated to the state of abutting against the vehicle body.

[0004] The existing watering carts, including the above-mentioned patent, have the following disadvantages. In the process of watering, in order to protect the water pump from being damaged, the existing watering carts usually continuously supply water. However, there is a certain distance between adjacent two trees (street trees) during watering. Therefore, when switching the watering object, the continuous water supply of the water pipe will cause a certain amount of waste. SUMMARY

[0005] The purpose of the present application is to provide a watering cart for landscaping.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A watering cart for landscaping, which includes a vehicle body, a water tank installed on the vehicle body, a support rotatably installed on the vehicle body, a conveying pipe provided on the support and communicating with the water tank, a water storage hopper installed on the end of the support away from the vehicle body, a water outlet provided on the water storage hopper corresponding to the water outlet end of the conveying pipe, and the water flowing out of the conveying pipe can be received by the water storage hopper, and the water in the water storage hopper can be discharged through the water outlet.

[0008] The water sprinkling vehicle, the diameter of the water outlet is larger than the diameter of the water pipe.

[0009] The water sprinkling vehicle, a pressing plate is arranged in the water storage bucket, the pressing plate is movably connected with the inner cavity of the water storage bucket, the pressing plate divides the water storage bucket into a water storage cavity, the water outlet is communicated with the water storage cavity, and the pressing plate is driven to move to adjust the volume of the water storage cavity.

[0010] The water sprinkling vehicle, the water storage bucket is in a cylindrical shape, and the water storage bucket is horizontally arranged on the support, the pressing plate is in a disc shape, and the pressing plate is coaxially arranged with the water storage bucket.

[0011] The water sprinkling vehicle, the support is provided with an elastic element for maintaining the relative position of the pressing plate and the water storage bucket.

[0012] The water sprinkling vehicle, the elastic element comprises a guide rod, one end of the guide rod penetrates into the water storage bucket and is fixedly connected with the pressing plate, a connecting block is fixedly connected to the support, and a spring is further sleeved on the guide rod, and when the spring is in a natural state, the length of the guide rod penetrating into the water storage bucket is maximum.

[0013] The water sprinkling vehicle, the outer wall of the water storage bucket is provided with a pressure relief hole, and the pressing plate has a pressure relief position in the stroke of moving along the inner cavity of the water storage bucket, so that the pressure relief hole is communicated with the water storage cavity.

[0014] The water sprinkling vehicle, the support is further horizontally provided with a spraying pipe, the spraying pipe is communicated with the water storage cavity, and a plurality of nozzles are arranged on the outer wall of the spraying pipe at equal intervals along the axial direction of the spraying pipe.

[0015] The water sprinkling vehicle, the water outlet of the water storage bucket is provided with an adjusting valve, the adjusting valve has a first state, a second state and a third state, when the adjusting valve is in the first state, the water storage cavity is communicated with the outside, when the adjusting valve is in the second state, the water storage cavity is communicated with the spraying pipe, and when the adjusting valve is in the third state, the water storage cavity is isolated from the spraying pipe and the outside.

[0016] The water sprinkling vehicle, the water storage bucket is provided with a locking element, when the adjusting valve is in the second state, the spring is in a natural state, and the pressing plate is locked and cannot move.

[0017] In the above technical scheme, the water sprinkling vehicle provided by the embodiment of the application can realize accurate and fixed-point watering of the green trees by arranging the water storage bucket on the support, so that the water in the water tank can be transported to the water storage bucket and discharged to the effective watering area of the trees, and water source is prevented from being sprayed to the road surface to cause water accumulation. On the other hand, the water storage bucket can temporarily store the water flowing out of the water pipe during the driving of the water sprinkling vehicle to the trees, so that the waste caused by continuous water discharge during the driving of the water sprinkling vehicle is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0019] Figure 1 Front view of the watering cart when the support provided by the embodiment of the present application is in the retracted state;

[0020] Figure 2 Top view of the watering cart when the support provided by the embodiment of the present application is in the expanded state;

[0021] Figure 3 Enlarged schematic view of the support provided by the embodiment of the present application;

[0022] Figure 4 Front view of the support provided by the embodiment of the present application;

[0023] Figure 5 Partial sectional view of the support provided by the embodiment of the present application; Figure 4

[0024] Figure 6 Partial sectional view of the water storage bucket provided by the embodiment of the present application;

[0025] Figure 7 Schematic view of the positional relationship between the pressure relief hole and the adjusting valve provided by the embodiment of the present application;

[0026] Figure 8 Exploded view of the adjusting valve provided by the embodiment of the present application.

[0027] Explanation of reference signs:

[0028] 1, vehicle body; 2, water tank; 3, support; 31, water delivery pipe; 32, connecting block; 4, water storage bucket; 41, pressing plate; 411, limiting rod; 42, water storage cavity; 43, pressure relief hole; 5, elastic member; 51, guide rod; 511, stop block; 52, spring; 6, spray pipe; 61, spray head; 7, adjusting valve; 71, valve seat; 711, first valve hole; 712, second valve hole; 72, valve core; 721, water inlet; 722, water outlet; 723, arc-shaped block; 73, adjusting rod; 74, pulling rod. DETAILED DESCRIPTION

[0029] In order to make those skilled in the art better understand the technical solutions of the present application, the following will further introduce the present application in combination with the drawings.

[0030] ​In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] like Figures 1 to 8 As shown in the figure, an embodiment of the present invention provides a water sprinkler truck for landscaping, including a vehicle body 1, a water tank 2 installed on the vehicle body 1, a bracket 3 rotatably installed on the vehicle body 1, a conveying pipe connected to the water tank 2 provided on the bracket 3, a water storage hopper 4 installed on the end of the bracket 3 away from the vehicle body 1, the water outlet end of the conveying pipe is set corresponding to the water storage hopper 4, the water storage hopper 4 is provided with a drain outlet, the water flowing out of the conveying pipe can be received by the water storage hopper 4, and the water in the water storage hopper 4 can be discharged through the drain outlet.

[0032] Specifically, this sprinkler truck is used for watering gardens and green plants. It includes a vehicle body 1 and a water tank 2 mounted on the vehicle body 1. Additionally, brackets 3 are mounted on both sides of the vehicle body 1. The brackets 3 are rotatably connected to the vehicle body 1 and have two states: extended and retracted. When the brackets 3 are retracted, they are parallel to the vehicle body 1. Figure 1 As shown, this is to ensure that the water truck does not affect traffic flow during normal operation. When the support 3 is in the extended state, as... Figure 2As shown, the bracket 3 is perpendicular to the vehicle body 1, which is the position during water spraying operations. The angle of the bracket 3 can be adjusted using an existing cylinder, which is rotatably mounted on the vehicle body 1, and its output end is rotatably connected to the bracket 3. Unlike existing technologies, the bracket 3 is equipped with a water storage hopper 4. When the bracket 3 is in the extended state, the water storage hopper 4 is located at the end of the bracket 3 furthest from the vehicle body 1. The bracket 3 also has a delivery pipe, one end of which is connected to the water tank 2. The delivery pipe is installed inside the steel structure of the bracket 3 to protect it. The system includes a fixed section fixed to the vehicle body 1 and a rotating section mounted on the bracket 3 that can rotate with the bracket 3. The fixed section and the rotating section are connected by a rotary joint, which is existing technology and can be directly applied without further explanation. The other end of the conveying pipe is set to the water storage tank 4. Accordingly, a centrifugal pump is connected in series on the conveying pipe to facilitate the conveying of water from the water tank 2 to the rotating section through the fixed section. The water storage tank 4 is provided with a drain outlet. In this embodiment, a valve is provided at the drain outlet. The valve can be an existing electrically controlled valve, which is existing technology and can be directly applied without further explanation.

[0033] During the watering of roadside trees, the support 3 is driven to switch from the retracted state to the extended state. The centrifugal pump continuously pumps water from the water tank 2 into the water delivery pipe 31. The sprinkler truck slowly drives along the road and ensures that the water storage hopper 4 passes through the effective watering area of ​​the roadside trees (the tree pits of the roadside trees). When the water storage hopper 4 is directly opposite the tree, the valve at the outlet opens, and the water output from the delivery pipe enters the water storage hopper 4 and is directly discharged from the outlet for watering. When the water storage hopper 4 gradually moves away from the tree (leaving the effective watering area), the valve at the outlet is closed. At this time, the water flowing out of the end of the delivery pipe is stored in the water storage hopper 4. When the water storage hopper 4 moves to be directly opposite the next tree, the valve at the outlet is opened again to release the water in the water storage hopper 4 for watering. This process is repeated.

[0034] The water truck provided in this embodiment of the invention, by installing a water storage hopper 4 on the bracket 3, allows water in the water tank 2 to be transported to the water storage hopper 4 and discharged in a directed manner to the effective irrigation area of ​​the trees, thereby achieving precise and targeted irrigation of the green trees and avoiding water spraying onto the road surface and causing water accumulation. On the other hand, as the water truck travels to the next tree, the water storage hopper 4 can temporarily store the water flowing out of the water pipe 31, avoiding waste caused by continuous water discharge during the driving of the water truck.

[0035] Furthermore, the diameter of the outlet is larger than the diameter of the water supply pipe 31.

[0036] Specifically, since the centrifugal pump operates continuously during the water truck's operation, to ensure that the water storage hopper 4 always has a water storage effect, it is necessary to ensure that the water in the water storage hopper 4 is discharged to the maximum extent when the drain outlet is opened, so as to continue storing water. In this embodiment, the diameter of the drain outlet is larger than the diameter of the water supply pipe 31, so as to achieve rapid and maximum discharge of water from the water storage hopper 4. On the one hand, this allows the water storage hopper 4 to have enough space to store water when the valve at the drain outlet is closed. On the other hand, during irrigation, the water outflow rate of the water storage hopper 4 is greater than the water inflow rate, which helps to improve irrigation efficiency.

[0037] In another embodiment of the present invention, a pressure plate 41 is provided inside the water storage hopper 4. The pressure plate 41 is dynamically sealed to the inner cavity of the water storage hopper 4. The pressure plate 41 is divided into a water storage cavity 42 inside the water storage hopper 4. The drain outlet is connected to the water storage cavity 42. The pressure plate 41 is driven to move to adjust the volume of the water storage cavity 42.

[0038] Specifically, in the above embodiment, the water in the water storage tank 4 flows out naturally when the valve at the drain outlet is opened. To further improve the water discharge efficiency and to release as much water as possible from the water storage tank 4, preventing the water storage tank 4 from becoming full during the switching of irrigation targets and causing damage to the centrifugal pump; in this embodiment, a pressure plate 41 is provided inside the water storage tank 4. The pressure plate 41 is dynamically sealed to the inner cavity of the water storage tank 4. The pressure plate 41 and the inner wall of the water storage tank 4 together form a water storage cavity 42. Figures 5 to 7 As shown, the pressure plate 41 can adjust the volume of the water storage cavity 42 when it slides within the inner cavity of the water storage hopper 4. When the pressure plate 41 is positioned near the drain outlet within the water storage hopper 4, the volume of the water storage cavity 42 is at its minimum. When the valve at the drain outlet is closed, the pressure plate 41 is driven to slide along the inner cavity of the water storage hopper 4 and gradually move away from the drain outlet, causing the volume of the water storage cavity 42 to gradually increase. Conversely, when the valve is opened, the pressure plate 41 is driven to slide along the inner cavity of the water storage hopper 4 towards the drain outlet, during which the volume of the water storage cavity 42 gradually decreases, and the pressure plate 41 pushes the water in the water storage cavity 42 to be discharged quickly. Optionally, the bracket 3 is equipped with an electric push rod (not shown in the figure) for driving the pressure plate 41 to move. Figure 5 The horizontal sliding direction in the view allows the electric push rod to be horizontally mounted on the bracket 3, with the end of the electric push rod penetrating into the water storage hopper 4 and fixedly connected to the pressure plate 41, thus driving the pressure plate 41. Preferably, the water storage hopper 4 is cylindrical and horizontally mounted on the bracket 3, while the pressure plate 41 is disc-shaped and coaxially arranged with the water storage hopper 4. This avoids stress concentration that could cause the pressure plate 41 to deform and affect the dynamic sealing effect, making it easier to process and improving the reliability of the seal. The drain outlet is located on the side wall of the water storage hopper 4 facing the ground, and is located inside the water storage hopper 4 on the side away from the bracket 3.

[0039] In another embodiment of the present invention, the support 3 is provided with an elastic member 5 that maintains the relative position of the pressure plate 41 and the water storage tank 4.

[0040] Furthermore, the elastic element 5 includes a guide rod 51, one end of which extends into the water storage hopper 4 and is fixedly connected to the pressure plate 41. A connecting block 32 is fixedly connected to the bracket 3. A spring 52 is also fitted on the guide rod 51. When the spring 52 is in its natural state, the length of the guide rod 51 extending into the water storage hopper 4 is at its maximum.

[0041] Specifically, in the above embodiment, the pressure plate 41 is moved within the water storage hopper 4 by an electric push rod, requiring frequent control of the electric push rod's opening and closing, and also necessitating careful timing of the opening and closing, making operation rather inconvenient. In this embodiment, the bracket 3 is equipped with an elastic element 5, such as... Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the elastic element 5 includes a guide rod 51 mounted on the bracket 3. The guide rod 51 is arranged along the axial direction of the water storage hopper 4. One end of the guide rod 51 extends into the water storage hopper 4 and is fixedly connected to the pressure plate 41. A connecting block 32 is fixedly connected to the bracket 3. The other end of the guide rod 51 extends through the connecting block 32. The connecting block 32 is used to limit and guide the guide rod 51. A stop block 511 is fitted on the outer wall of the guide rod 51 between the connecting block 32 and the water storage hopper 4. A spring 52 is fitted on the part of the guide rod 51 between the connecting block 32 and the stop block 511. The two ends of the spring 52 abut against the connecting block 32 and the stop block 511 respectively. When the spring 52 is in its natural state, the stop block 511 contacts the outer wall of the water storage hopper 4. At this time, the length of the guide rod 51 extending into the water storage hopper 4 is the maximum, which means that the horizontal distance between the pressure plate 41 and the drain outlet is the minimum.

[0042] When the valve at the drain outlet is closed, as water is continuously added to the water storage tank 4 via the water supply pipe 31, the water pressure in the water storage chamber 42 gradually increases. The pressure plate 41 is squeezed and gradually moves away from the drain outlet. During this process, the pressure plate 41 pushes the guide rod 51 to move outward from the water storage tank 4. The stop block 511 on the guide rod 51 moves synchronously with the guide rod 51, compressing the spring 52 to deform and store energy. When the valve at the drain outlet is opened again, the elastic force of the spring 52 is released and pushes the pressure plate 41 to slide along the inner cavity of the water storage tank 4 towards the location of the drain outlet. The volume of the water storage chamber 42 gradually decreases, and the water is quickly discharged outward from the drain outlet under the pressure of the pressure plate 41. With this configuration, the pressure plate 41 is passively driven to move by the change in water pressure in the water storage chamber 42 when the valve is opened and closed, through the cooperation of the guide rod 51 and the spring 52. This eliminates the need for electrical control components and opening and closing control, making the operation simpler.

[0043] Furthermore, the outer wall of the water storage hopper 4 is provided with a pressure relief hole 43, and the pressure plate 41 has a pressure relief position that allows the pressure relief hole 43 to communicate with the water storage cavity 42 during its travel along the inner cavity of the water storage hopper 4.

[0044] Specifically, by limiting the position of the pressure plate 41 by the elastic element 5, excessive water pressure in the water storage tank 4 or the conveying pipe can be avoided to some extent, preventing damage to the centrifugal pump or various seals. However, if the valve at the drain outlet fails to open or is forgotten to open when the centrifugal pump starts, the centrifugal pump will continue to supply water to the water storage tank 4 through the conveying pipe, which will also cause excessive water pressure in the water storage tank 4, thus causing the aforementioned problem. In this embodiment, a pressure relief hole 43 is provided on the side wall of the water storage tank 4, such as... Figure 7 As shown, the pressure relief hole 43 is located on the side of the water storage tank 4 near the support 3. When the spring 52 is in its natural state, the pressure plate 41 is located inside the water storage tank 4 near the drain outlet, and the pressure relief hole 43 is located on the side of the pressure plate 41 away from the drain outlet. At this time, the volume of the water storage cavity 42 is at its smallest, and the pressure relief hole 43 is not connected to the water storage cavity 42. However, when the pressure plate 41 gradually moves away from the drain outlet under the action of water pressure (moving closer to the pressure relief hole 43, but the pressure relief hole 43 is still located on the side of the pressure plate 41 away from the drain outlet), As the volume of the water storage chamber 42 gradually increases, the pressure relief hole 43 is still not connected to the water storage chamber 42, and the spring 52 is gradually compressed. As the pressure plate 41 continues to move, when the pressure relief hole 43 and the drain outlet are both on the same side of the pressure plate 41, or when part of the pressure relief hole 43 and the drain outlet are on the same side, the pressure relief hole 43 is connected to the water storage chamber 42. At this time, the water in the water storage chamber 42 flows out through the pressure relief hole 43 to avoid excessive water pressure in the water storage chamber 42 and to protect the centrifugal pump or seals from damage.

[0045] In another embodiment of the present invention, a spray pipe 6 is also horizontally installed on the bracket 3. The spray pipe 6 is connected to the water storage chamber 42, and a plurality of nozzles 61 are arranged at equal intervals along its own axial direction on the outer wall of the spray pipe 6.

[0046] Furthermore, a regulating valve 7 is installed at the drain outlet of the water storage tank 4. The regulating valve 7 has a first state, a second state, and a third state. When it is in the first state, the water storage chamber 42 is connected to the outside. When it is in the second state, the water storage chamber 42 is connected to the spray pipe 6. When it is in the third state, the water storage chamber 42 is isolated from both the spray pipe 6 and the outside.

[0047] Specifically, in the actual irrigation process, it also involves irrigating the shrubs between the main road and the auxiliary road. Since the shrubs are usually composed of continuous shrubs, in this embodiment, a sprinkler pipe 6 is also installed on the support 3. The sprinkler pipe 6 is connected to the water storage chamber 42. Several nozzles 61 are installed on the outer wall of the sprinkler pipe 6 facing the ground, and these nozzles 61 are evenly spaced along the length of the sprinkler pipe 6. A regulating valve 7 is installed at the drain outlet of the water storage tank 4. The regulating valve 7 has a first state, a second state, and a third state. In the first state, the water storage chamber 42 is connected to the outside and used for irrigating the roadside trees (the state during irrigation); in the second state, the water storage chamber 42 is connected to the sprinkler pipe 6 and used for irrigating the continuous shrubs; and in the third state, the water storage chamber 42 is connected to the sprinkler pipe 6... The water storage chamber 42 is isolated from both the outside and the inside. This process is also the state that exists during the watering of the roadside trees. When the water truck travels between the two roadside trees, the water storage chamber 42 is in the third state. The spray pipe 6 is connected to the water storage chamber 42 by the regulating valve 7. On the one hand, this reduces the use of valves. On the other hand, the movement of the pressure plate 41 in the water storage chamber 42 can reduce the damage to the pipeline system caused by the water hammer effect during valve switching. Optionally, the regulating valve 7 includes a valve seat 71 fixed to the water storage tank 4. The side wall of the valve seat 71 has a first valve hole 711 and a second valve hole 712. The first valve hole 711 is directly connected to the outside. The spray pipe 6 is connected to the internal space of the valve seat 71 through the second valve hole 712. A valve core 72 is rotatably installed inside the valve seat 71. The valve core 72 has an inlet 721 and an outlet 722. Figure 8 As shown, the inlet 721 is also the outlet of the water storage hopper 4. The valve core 72 is cylindrical, and the inlet 721 is the open end, i.e. the upper end, of the cylinder. The inlet 721 is kept in communication with the water storage chamber 42, while the outlet 722 is opened on the side wall of the valve core 72. During the rotation stroke of the valve core 72, the outlet 722 is connected to the first valve hole 711. At this time, the regulating valve 7 is in the first state. When the outlet 722 is connected to the second valve hole 712, the regulating valve 7 is in the second state. When the outlet 722 is blocked by the inner wall of the valve seat 71, the regulating valve 7 is in the third state.

[0048] Furthermore, an adjusting rod 73 is fixedly connected to the valve core 72. The upper end of the adjusting rod 73 extends through to the outside of the water storage hopper 4 and is fixedly connected to a lever 74. The lever 74 is set horizontally, and a torsion spring (not shown in the figure) is fitted on the adjusting rod 73. When the torsion spring is in its natural state, the regulating valve 7 is in the third state. When the lever 74 touches the tree, it drives the adjusting rod 73 to rotate and adjusts the regulating valve 7 from the third state to the first state.

[0049] Specifically, in the above embodiments, the connection and disconnection between the water storage tank 4 and the outside is controlled by electronic means, which is inconvenient to operate and affects the driving of the sprinkler truck. In this embodiment, an adjusting rod 73 is fixedly connected to the valve core 72. The upper end of the adjusting rod 73 extends to the outside of the water storage tank 4, and a lever 74 is fixedly connected to the end of the adjusting rod 73 outside the water storage tank 4. A torsion spring is fitted on the adjusting rod 73. When the torsion spring is in its natural state, the outlet 722 of the valve core 72 is blocked by the inner wall of the valve seat 71. At this time, the lever 74 and the vertical plane where the bracket 3 is located form an acute angle (positive 30° to 45°). Figure 2 The central lever 74 is parallel to the vertical plane of the bracket 3 (at 0°), and the end of the lever 74 faces the direction of travel of the sprinkler truck. During the travel of the sprinkler truck, the lever 74 comes into contact with the tree and is obstructed by the tree, causing the adjusting rod 73 to rotate. This passively adjusts the adjusting rod 73 from the third state to the first state until the angle between the lever 74 and the vertical plane of the bracket 3 is negative (from -35° to 50°). At this point, the lever 74 disengages from the tree, and the adjusting rod 73 is adjusted from the first state to the third state under the drive of the torsion spring. With this configuration, there is no need for manual valve control. By obstructing the lever 74 by the tree and restricting the adjusting rod 73 by the torsion spring, the regulating valve 7 is passively adjusted between the first and third states.

[0050] In another embodiment of the present invention, a locking element is provided inside the water storage tank 4. When the regulating valve 7 is in the second state, the spring 52 is in the natural state, and the pressure plate 41 is locked and cannot move.

[0051] Specifically, when using the sprinkler pipe 6 to irrigate shrubs, sufficient water pressure is required in the water storage tank 4 to ensure a certain water flow rate at the nozzle 61. However, as the water pressure increases, it drives the pressure plate 41 to move, thus automatically balancing the pressure and making it difficult to increase the water flow rate of the nozzle 61. In this embodiment, a locking element is provided inside the water storage tank 4. The locking element can lock the pressure plate 41 near the drain outlet when the regulating valve 7 is in the second state. Optionally, the locking element includes a component fixed to the pressure plate 41. The limiting rod 411 has one end bent upward away from the pressure plate 41. An arc-shaped block 723 is fixed to the outer wall of the valve core 72. The cross-section of the arc-shaped block 723 is L-shaped. During the rotation stroke of the valve core 72, when the regulating valve 7 is in the second state mentioned above, the arc-shaped block 723 is hooked together with the limiting rod 411, thereby restricting the position of the pressure plate 41 and preventing the pressure plate 41 from moving away from the drain outlet. This ensures that the volume of the water storage chamber 42 remains unchanged and provides sufficient water pressure to accelerate the water output speed of the spray pipe 6.

[0052] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A water sprinkler truck for landscaping, comprising a vehicle body and a water tank mounted on the vehicle body, characterized in that, A bracket is rotatably mounted on the vehicle body. A delivery pipe connected to the water tank is installed on the bracket. A water storage hopper is installed at the end of the bracket away from the vehicle body. The water outlet of the delivery pipe is set to correspond to the water storage hopper. A drain outlet is set on the water storage hopper. The water flowing out of the delivery pipe can be received by the water storage hopper, and the water in the water storage hopper can be released through the drain outlet.

2. A water sprinkler truck for landscaping as described in claim 1, characterized in that, The diameter of the outlet is larger than the diameter of the water pipe.

3. A water sprinkler truck for landscaping according to claim 1, characterized in that, A pressure plate is installed inside the water storage hopper. The pressure plate is dynamically sealed to the inner cavity of the water storage hopper. The pressure plate forms a water storage chamber inside the water storage hopper. The drain outlet is connected to the water storage chamber. The pressure plate is driven to move to adjust the volume of the water storage chamber.

4. A water sprinkler truck for landscaping according to claim 3, characterized in that, The water storage hopper is cylindrical and is horizontally installed on the support. The pressure plate is disc-shaped and is coaxial with the water storage hopper.

5. A water sprinkler truck for landscaping as described in claim 3 or 4, characterized in that, The support frame is equipped with elastic elements that maintain the relative position of the pressure plate and the water storage hopper.

6. A water sprinkler truck for landscaping according to claim 5, characterized in that, The elastic element includes a guide rod, one end of which extends into the water storage hopper and is fixedly connected to the pressure plate. A connecting block is fixedly connected to the bracket. A spring is also fitted on the guide rod. When the spring is in its natural state, the length of the guide rod extending into the water storage hopper is at its maximum.

7. A water sprinkler truck for landscaping according to claim 5, characterized in that, The outer wall of the water storage hopper is provided with a pressure relief hole, and the pressure plate has a pressure relief position that allows the pressure relief hole to communicate with the water storage cavity during its travel along the inner cavity of the water storage hopper.

8. A water sprinkler truck for landscaping according to claim 3, characterized in that, A spray pipe is also horizontally installed on the support. The spray pipe is connected to the water storage chamber. Several nozzles are evenly spaced along the outer wall of the spray pipe along its own axis.

9. A water sprinkler truck for landscaping according to claim 8, characterized in that, A regulating valve is installed at the drain outlet of the water storage tank. The regulating valve has a first state, a second state, and a third state. When it is in the first state, the water storage chamber is connected to the outside. When it is in the second state, the water storage chamber is connected to the spray pipe. When it is in the third state, the water storage chamber is isolated from both the spray pipe and the outside.

10. A water sprinkler truck for landscaping according to claim 9, characterized in that, The water storage tank is equipped with a locking device. When the regulating valve is in the second state, the spring is in the natural state and the pressure plate is locked and cannot be moved.

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