A spraying mechanism of a watering cart

Abstract

The utility model discloses a kind of watering cart spraying mechanisms, belong to watering cart equipment technical field, including fixed seat, limiting footrest and limiting sleeve, sliding connection has sliding link in limiting sleeve, the left side of sliding link is provided with U-shaped strip frame, the right side of sliding link is provided with telescopic pneumatic cylinder, the left end opening of limiting footrest is hinged with positioning link, positioning link is sequentially connected with several X-shaped scissor type mechanisms, the left end opening position of U-shaped strip frame is hinged by middle hinge shaft in the X-shaped scissor type mechanism of most right side, several X-shaped scissor type mechanisms are sequentially connected by side hinge shaft, and the bottom of side hinge shaft is equipped with spray head, and the top of side hinge shaft is equipped with the spiral hose connected with spray head, and the linkage mechanism is driven by telescopic pneumatic cylinder, realizes stepless regulation of spraying diameter, compared with traditional fixed spraying arm, coverage area is improved, adapt to different road width demand, staggered spray head layout reduces blind area of spraying.

Description

Technical Field

[0001] This utility model belongs to the technical field of sprinkler truck equipment, and in particular, it relates to a sprinkler truck spraying mechanism. Background Technology

[0002] Water sprinkler trucks, also known as spray trucks, multi-functional water sprinkler trucks, landscaping water sprinkler trucks, water tankers, and water transport trucks, are suitable for washing various road surfaces, watering trees, green belts, and lawns, as well as for road and factory construction and high-rise building cleaning. They feature functions such as watering, dust suppression, high and low-level spraying, pesticide spraying, and guardrail washing, and also have water transport, drainage, and emergency firefighting capabilities.

[0003] Currently, traditional sprinkler trucks on the market have some shortcomings in practical applications. Most traditional sprinkler trucks use a fixed spray arm structure, resulting in a fixed spraying range that cannot be flexibly adjusted according to actual conditions such as road width. When operating on narrow roads, this easily leads to water waste; when operating on wider roads, it is difficult to achieve full coverage, resulting in poor cleaning and irrigation effects. In addition, the nozzle layout of traditional sprinkler trucks is not reasonable enough, resulting in a small spraying range and large blind spots. Utility Model Content

[0004] In order to overcome the shortcomings of existing technologies, such as the inability to flexibly adjust according to actual conditions like road width and the simple arrangement of nozzles, resulting in large spray blind spots, this utility model provides a water truck spraying mechanism.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a water sprinkler truck spraying mechanism, including a fixed base, a limiting foot set on the left side of the fixed base, a limiting sleeve set on the right side of the fixed base, a sliding connecting rod slidably connected inside the limiting sleeve, a U-shaped frame set on the left side of the sliding connecting rod, a telescopic cylinder set on the right side of the sliding connecting rod, the inner side wall of the U-shaped frame closely attached to the outer side wall of the limiting foot, the left end opening of the U-shaped frame extending out of the left end opening of the limiting foot, a positioning connecting rod hinged at the left end opening of the limiting foot, the positioning connecting rod sequentially connected to several X-shaped scissor mechanisms, the rightmost X-shaped scissor mechanism being hinged to the left end opening of the U-shaped frame via a central hinge shaft, several X-shaped scissor mechanisms sequentially connected via side hinge shafts, a nozzle installed at the bottom of the side hinge shaft, and a spiral hose connected to the nozzle provided at the top of the side hinge shaft.

[0006] As a further improvement of this utility model, the positioning link includes a front short link and a rear short link, which are respectively hinged to the front and rear ends of the right side of the rightmost X-shaped scissor mechanism.

[0007] As a further improvement of this utility model, the inner wall of the limiting sleeve is provided with a self-lubricating coating, and the outer wall of the sliding connecting rod is correspondingly provided with a wear-resistant guide strip, the two forming a low-friction sliding pair.

[0008] As a further improvement of this utility model, a limiting buffer plate is provided at the right end of the sliding link to limit the maximum stroke of the sliding link.

[0009] As a further improvement of this utility model, the telescopic cylinder is fixedly connected to the sliding connecting rod via a flange, and the outer side of the cylinder body of the telescopic cylinder is provided with reinforcing ribs.

[0010] As a further improvement of this utility model, the nozzle is at least one of a fan-shaped nozzle, a conical nozzle, and a columnar nozzle.

[0011] As a further improvement of this utility model, the spiral hose adopts a three-layer structure design, with the inner layer being a corrosion-resistant PVC material, the middle layer being a steel wire braided reinforcement layer, and the outer layer being a weather-resistant rubber protective layer. Furthermore, the pitch of the spiral hose is adapted to the maximum stroke of the connecting rod when it is extended.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Dynamically adjustable spraying range: An X-shaped scissor mechanism driven by a telescopic cylinder enables stepless adjustment of the spraying diameter. Compared to traditional fixed spray arms, this increases the coverage area and adapts to different road widths.

[0014] 2. Highly efficient water-saving design; the X-shaped scissor mechanism layout reduces blind spots in spraying and automatically adjusts the spray volume according to road conditions;

[0015] 3. Intelligent operation capability: the path planning software automatically matches the preset spraying mode. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of a water sprinkler truck spraying mechanism according to the present invention.

[0018] Figure 2 This is a schematic diagram of the positioning link of this utility model.

[0019] In the diagram: 1. Fixed base; 2. Limiting foot; 3. Limiting sleeve; 4. Sliding connecting rod; 5. U-shaped frame; 6. Telescopic cylinder; 7. Positioning connecting rod; 8. X-shaped scissor mechanism; 9. Front short connecting rod; 10. Rear short connecting rod; 11. Middle hinge shaft; 12. Side hinge shaft; 13. Nozzle; 14. Spiral hose; 15. Limiting buffer plate; 16. Flange; 17. Reinforcing rib. Detailed Implementation

[0020] To make the technical solution and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0021] Reference Figure 1 This utility model discloses a water sprinkler truck spraying mechanism, including a fixed base 1, a limiting foot 2 on the left side of the fixed base 1, a limiting sleeve 3 on the right side of the fixed base 1, a sliding connecting rod 4 slidably connected inside the limiting sleeve 3, a U-shaped frame 5 on the left side of the sliding connecting rod 4, and a telescopic cylinder 6 on the right side of the sliding connecting rod 4. The inner side wall of the U-shaped frame 5 is tightly attached to the outer side wall of the limiting foot 2, and the left end opening of the U-shaped frame 5 extends out of the left end opening of the limiting foot 2. A positioning connecting rod 7 is hinged at the left end opening of the limiting foot 2. Several X-shaped scissor mechanisms 8 are sequentially connected to the positioning connecting rod 7. The rightmost X-shaped scissor mechanism 8 is hinged to the left end opening of the U-shaped frame 5 through a central hinge shaft 11. Several X-shaped scissor mechanisms 8 are sequentially connected through side hinge shafts 12. A nozzle 13 is installed at the bottom of the side hinge shaft 12, and a spiral hose 14 connected to the nozzle 13 is provided at the top of the side hinge shaft 12.

[0022] Reference Figure 2 The positioning link 7 includes a front short link 9 and a rear short link 10, which are respectively hinged to the front and rear ends of the right side of the rightmost X-shaped scissor mechanism 8.

[0023] On the left side of the fixed base 1, a limiting foot 2 is provided. The limiting foot 2 not only restricts the displacement of related components, but also provides a stable starting connection point for the hinged linkage structure, ensuring the accuracy and stability of subsequent linkage movements. On the right side of the fixed base 1, a limiting sleeve 3 is provided. The limiting sleeve 3 has a precise internal structure, and its inner wall is finely machined to form a sliding connection with the sliding connecting rod 4. The sliding connecting rod 4 can slide smoothly in a straight line within the limiting sleeve 3. This sliding connection method provides the basis for the sprayer to achieve specific extension and retraction movements.

[0024] A U-shaped support 5 is installed on the left side of the sliding link 4. The inner wall of the U-shaped support 5 is tightly fitted with the outer wall of the limiting foot 2. This fitting method can effectively prevent unnecessary displacement of the U-shaped support 5 during movement, ensuring its linearity and stability. The left end opening of the U-shaped support 5 extends out of the left end opening of the limiting foot 2, thereby providing movement space for the positioning link 7, which is hinged at the left end opening of the limiting foot 2.

[0025] When the telescopic cylinder 6 is activated, it pushes the sliding connecting rod 4 to slide within the limiting sleeve 3. The sliding connecting rod 4 drives the U-shaped frame 5 to move synchronously, and the movement of the U-shaped frame 5, in turn, drives the positioning connecting rod 7 to rotate around the hinge point of the limiting foot 2 through the limiting action. The rotation of the positioning connecting rod 7 is then transmitted to the X-shaped scissor mechanism 8 through the side hinge shaft 12, causing the entire connecting rod structure to extend or retract like an unfolded fan. During this process, the nozzle 13 installed at the bottom of the side hinge shaft 11 also moves accordingly, thereby achieving water spraying operations in different ranges. When watering a closer area is needed, the telescopic cylinder 6 retracts, causing the connecting rod structure to retract, and the nozzle 13 moves closer to the water truck; when watering a farther area is needed, the telescopic cylinder 6 extends, causing the connecting rod structure to unfold, and the nozzle 13 moves away from the water truck, covering a larger area.

[0026] The fixed base 1 is made of high-strength cast steel and has a shock-absorbing rubber pad at the bottom, allowing for quick docking with the water truck chassis. The limiting foot 2 is integrally formed with the fixed base 1, and has a rounded hinge seat on the left side, providing a stable rotation fulcrum for the positioning link 7. The limiting sleeve 3 is integrally formed with the fixed base 1, and its inner wall is coated with a self-lubricating ceramic coating, forming a low-friction sliding pair with the wear-resistant guide strip on the outer wall of the sliding link 4.

[0027] The sliding connecting rod 4 is made of hollow aluminum alloy profile with an internal reinforcing rib structure. It is connected to the telescopic cylinder 6 on the right side via flange 16, and the U-shaped frame 5 on the left side uses a double-web structure to enhance torsional resistance. The telescopic cylinder 6 is fixedly connected to the sliding connecting rod 4 via flange (16), and the cylinder body of the telescopic cylinder 6 is provided with reinforcing ribs 17 on the outer side. The telescopic cylinder 6 adopts a double-acting piston design, with triangular reinforcing ribs 17 evenly distributed on the outer side of the cylinder body. A pressure sensor is integrated into the piston rod head, and the stroke range is 300-800mm. The flange 16 connection provides higher connection strength (20% higher shear strength compared to welding), facilitating disassembly and maintenance. The reinforcing ribs 17 improve the cylinder body installation rigidity.

[0028] The X-shaped scissor mechanism 8 is made of high-strength extruded aluminum alloy profile, and the crossing angle of the X-shaped scissor mechanism 8 ranges from 30° to 120°. The side hinge shaft 12 is made of hollow stainless steel shaft with internal water delivery channels and a Teflon anti-corrosion coating on the surface. The nozzle 13 adopts a modular design to form a spray array, with a single-row flow rate adjustment range of 5-20L / min.

[0029] Nozzle 13 is at least one of a fan-shaped nozzle, a cone-shaped nozzle, and a columnar nozzle. Fan-shaped nozzle: suitable for large-area planar spraying, with a coverage width of 5-8 meters. Cone-shaped nozzle: forms a cone-shaped water mist, used for high-altitude dust suppression or fine irrigation. Columnar nozzle: provides long-distance spraying, suitable for edge area operations. The spiral hose 14 adopts a three-layer structure design: an inner layer of corrosion-resistant PVC material, a middle layer of steel wire braided reinforcement, and an outer layer of weather-resistant rubber protection. The pitch of the spiral hose 14 is adapted to the maximum stroke of the connecting rod. It withstands high pressure, with a burst pressure ≥6MPa, preventing hose rupture. Its torsion resistance is improved, allowing it to withstand 360° twisting without damage. It ensures that the hose does not stretch or deform when the connecting rod is fully extended, avoiding water flow obstruction.

[0030] The control system sends a command to activate the telescopic cylinder 6. The telescopic cylinder 6 pushes the sliding connecting rod 4 to slide to the left within the limiting sleeve 3. The U-shaped frame 5 moves to the left simultaneously, and the positioning connecting rod 7 rotates outward around the hinge point of the limiting foot 2, causing the X-shaped scissor mechanism 8 to move outward. The entire linkage mechanism unfolds in a fan shape, and the nozzle 13 expands from its retracted state to its maximum spray diameter. The water pump delivers water to the spiral hose 14, and the water flows into the nozzle 13 through the water supply channels of the side hinge shaft 11 and the middle hinge shaft 12. The control system automatically adjusts the stroke of the telescopic cylinder 6 and the nozzle flow rate according to GPS positioning and a preset path. The telescopic cylinder 6 reverses its action, pulling the sliding connecting rod 4 to move to the right. The U-shaped frame 5 drives the linkage mechanism to retract inward, and the crossing angle of the X-shaped scissor mechanism 8 gradually decreases. The nozzle 13 array retracts to its initial position, facilitating vehicle relocation and transportation.

[0031] The inner wall of the limiting sleeve 3 is provided with a self-lubricating coating, and the outer wall of the sliding connecting rod 4 is correspondingly provided with a wear-resistant guide strip. The two form a low-friction sliding pair, which reduces the sliding friction coefficient, reduces resistance by about 30%, extends component life, and reduces wear rate by 50%. Frequent lubrication maintenance is not required, reducing maintenance costs and downtime.

[0032] A limiting buffer plate 15 is provided at the right end of the sliding link 4 to limit the maximum stroke of the sliding link 4. This buffers the impact force at the end of the cylinder stroke, preventing structural damage caused by rigid collisions.

[0033] It should be understood that the specific embodiments described herein are for understanding the present invention only and are not intended to limit the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A water sprinkler truck spraying mechanism, comprising a fixed base (1), characterized in that: A limiting foot (2) is provided on the left side of the fixed seat (1), and a limiting sleeve (3) is provided on the right side of the fixed seat (1). A sliding connecting rod (4) is slidably connected inside the limiting sleeve (3). A U-shaped bar (5) is provided on the left side of the sliding connecting rod (4), and a telescopic cylinder (6) is provided on the right side of the sliding connecting rod (4). The inner wall of the U-shaped bar (5) is tightly attached to the outer wall of the limiting foot (2). The left end opening of the U-shaped bar (5) extends out of the left end opening of the limiting foot (2). 2) A positioning link (7) is hinged at the left end opening. The positioning link (7) is connected to several X-shaped scissor mechanisms (8) in sequence. The rightmost X-shaped scissor mechanism (8) is hinged to the left end opening of the U-shaped frame (5) through the middle hinge shaft (11). Several X-shaped scissor mechanisms (8) are connected in sequence through the side hinge shaft (12). The bottom of the side hinge shaft (12) is equipped with a nozzle (13), and the top of the side hinge shaft (12) is equipped with a spiral hose (14) that connects to the nozzle (13).

2. The water sprinkler truck spraying mechanism according to claim 1, characterized in that: The positioning link (7) includes a front short link (9) and a rear short link (10), which are respectively hinged to the front and rear ends of the right side of the rightmost X-shaped scissor mechanism (8).

3. The water sprinkler spraying mechanism of a sprinkler truck according to claim 1, characterized in that: The inner wall of the limiting sleeve (3) is provided with a self-lubricating coating, and the outer wall of the sliding connecting rod (4) is provided with a wear-resistant guide strip, which together form a low-friction sliding pair.

4. The water sprinkler truck spraying mechanism according to claim 3, characterized in that: The right end of the sliding link (4) is provided with a limiting buffer plate (15) to limit the maximum stroke of the sliding link (4).

5. The water sprinkler truck spraying mechanism according to claim 4, characterized in that: The telescopic cylinder (6) is fixedly connected to the sliding connecting rod (4) via a flange (16), and the cylinder body of the telescopic cylinder (6) is provided with reinforcing ribs (17).

6. The water sprinkler truck spraying mechanism according to claim 5, characterized in that: The nozzle (13) is at least one of a fan-shaped nozzle, a cone-shaped nozzle, and a columnar nozzle.

7. A water sprinkler truck spraying mechanism according to claim 6, characterized in that: The spiral hose (14) adopts a three-layer structure design. The inner layer is made of corrosion-resistant PVC material, the middle layer is a steel wire braided reinforcement layer, and the outer layer is a weather-resistant rubber protective layer. The pitch of the spiral hose (14) is matched with the maximum stroke of the connecting rod.

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