Rotary spray gun transmission structure and rotary spray gun

Abstract

The utility model discloses a rotary spray gun transmission structure and a rotary spray gun, and the transmission structure comprises a turntable and a transmission box which is in transmission connection with the lower part of the turntable, the transmission case comprises a closed case body, an input shaft which is rotatably connected to one end of the case body and is connected with the turntable, and the end part of the input shaft is upward, an output shaft which is rotatably connected to the other end of the case body, and a transmission element which is connected between the input shaft and the output shaft, the case body is provided with a lubricating nipple and a sealing element, and the sealing element is sleeved outside the output shaft; and the box body is filled with lubricating oil. Due to the fact that the box body is filled with the lubricating oil, the worm gear and the worm at the high position in the box body are always immersed in the lubricating oil during working, and therefore the worm and the worm gear can be well lubricated during transmission, and the service life of the worm and the worm gear is prolonged. Heat generated when the worm and the worm gear are meshed and rotate is easily taken away by lubricating oil, and therefore the adhesion phenomenon caused by overheating due to poor lubrication is prevented. Therefore, the lubricating effect of the transmission case adopting the lubricating oil is better than that of the transmission case adopting the lubricating grease, and the service life of the transmission case can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sprinkler irrigation equipment, in particular to a transmission structure of a rotary spray gun and a rotary spray gun. Background Art

[0002] A rotary spray gun is a commonly used equipment for sprinkler irrigation. This rotary spray gun sprays water through a steering water pipe onto a turntable on the spray gun to drive the turntable to rotate. Then, the turntable drives the rotary spray gun to rotate through a transmission box, thereby realizing rotary sprinkler irrigation.

[0003] Currently, the transmission box of the rotary spray gun usually uses grease lubrication. Since the transmission box is inclined during use, after working for a period of time, the lubricating grease in the transmission box will flow to the lower part, resulting in a lack of lubricating grease for the transmission components at higher positions in the transmission box, causing poor lubrication, increased wear, and greatly reducing the service life. The transmission components at higher positions are usually worm and worm gear transmission components. Due to the characteristics of worm and worm gear transmission, friction will occur between the worm and the worm gear during transmission, generating a large amount of heat, and the tooth surface is easily worn. If not well lubricated, it will lead to rapid wear of the worm and worm gear and cause scrapping. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a transmission structure of a rotary spray gun, which is used to solve the problem that after the transmission box of the rotary spray gun works for a period of time, due to the lubricating grease in the transmission box flowing to the lower part, the transmission components at higher positions in the transmission box lack lubricating grease, resulting in increased wear and reduced service life.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A transmission structure of a rotary spray gun includes a turntable and a transmission box that is drivingly connected to the lower surface of the turntable. The transmission box includes a closed box body, an input shaft with an upward end that is rotatably connected to one end of the box body and is connected to the turntable, an output shaft that is rotatably connected to the other end of the box body, and a transmission component that is connected between the input shaft and the output shaft. The box body is provided with a grease nipple, and the box body is provided with a seal. The seal is sleeved outside the output shaft, and the box body is filled with lubricating oil.

[0007] Further, a blind hole with a downward opening is provided in the lower part of the hub at the center of the turntable, and the outer end of the input shaft is inserted into the blind hole and fixedly connected to the hub.

[0008] Further, the part of the box body corresponding to the end of the input shaft extends into the blind hole.

[0009] Further, a sleeve is provided between the input shaft and the box body. The sleeve is fixedly connected to the box body, and the input shaft is rotatably connected through the sleeve.

[0010] Further, the blind hole is isolated from the top surface of the turntable.

[0011] Further, the fueling nozzle is a pneumatic quick connector, and a plug cover is provided on the pneumatic quick connector.

[0012] Further, the sealing member is at least one of an O-ring and a lip seal.

[0013] A rotary spray gun includes the above-described transmission structure of the rotary spray gun.

[0014] The positive effects of the present utility model are as follows:

[0015] 1. A fueling nozzle is provided on the box body of the transmission case of the transmission structure, a sealing member sleeved on the output shaft of the transmission case is provided on the box body, and lubricating oil is filled in the box body. Since the lubricating oil is filled in the box body, the worm gear and the worm at the high position in the box body are always immersed in the lubricating oil during operation, so that the worm and the worm gear maintain good lubrication during transmission, and their service life is prolonged. The heat generated when the worm and the worm gear are engaged and rotated is easily carried away by the lubricating oil, thereby preventing the adhesion phenomenon caused by overheating due to poor lubrication. In addition, since lubricating oil is used for lubrication, the transmission efficiency is higher, the energy loss is less, the resistance is smaller, and thus the rotation is more flexible. Therefore, the lubrication effect of using lubricating oil for the transmission case is better than that of using grease before, and the service life of the transmission case can be greatly prolonged.

[0016] 2. A blind hole with a downward opening is provided at the lower part of the hub at the center of the turntable. The outer end of the output shaft is inserted into the blind hole and fixedly connected to the hub. The part of the box body corresponding to the upper end of the input shaft extends into the blind hole. When the turntable rotates, the water flow and water splashes splashed onto the outer edge of the hub will be thrown off the surface of the hub under the action of the centrifugal force generated by the rotation of the hub, and will not enter the box body through the gap between the box body and the input shaft, and then mix into the lubricating oil to reduce the service life of the transmission components in the box body. Description of the Drawings

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is a side view of the present utility model;

[0019] Figure 3 is Figure 2 a cross-sectional view taken along line B-B in

[0020] Figure 4 is Figure 2 a cross-sectional view taken along line A-A in

[0021] Figure 5 is a usage diagram of the present utility model;

[0022] In the figure:

[0023] 1. Output shaft; 2. Housing; 3. Turntable; 4. Grease nipple; 5. Plug; 6. Input shaft; 7. Steering water spray pipe; 8. Hub; 9. Blind hole; 10. Sleeve; 11. Seal. Detailed implementation mode

[0024] Embodiment 1

[0025] As Figures 1 to 4 shown, the transmission structure of the existing rotary spray gun includes a turntable 3 and a transmission box that is drivingly connected to the lower part of the turntable 3. The transmission box includes a closed housing 2, an input shaft 6 with an upward end that is rotatably connected to one end of the housing 2 and is connected to the turntable 3, an output shaft 1 that is rotatably connected to the other end of the housing 2, and a transmission element connected between the input shaft 6 and the output shaft 1. The output shaft 1 is connected with a worm, the worm meshes with a worm gear, and the worm gear is drivingly connected to the output shaft through a gear mechanism in the housing 2.

[0026] A transmission structure of a rotary spray gun has the following improvements on the above transmission structure:

[0027] The housing 2 is provided with a grease nipple 4, the grease nipple 4 is a pneumatic quick connector, and a plug 5 covers the pneumatic quick connector. The housing 2 is provided with a seal 11, the seal 11 is sleeved outside the output shaft 1, and the housing 2 is filled with lubricating oil. The seal 11 is a lip seal, which is used to prevent the lubricating oil in the housing 2 from leaking out or external dust or water mist from entering the housing 2.

[0028] As Figure 5 shown, when in use, the housing 2 is inclined. The water flow sprayed by the steering water spray pipe 7 of the rotary spray gun impacts the blades on the turntable 3, driving the turntable 3 to rotate, and then driving the output shaft 1 to rotate through the worm, worm gear and gear mechanism, so that the rotary spray gun rotates. Since the housing 2 is filled with lubricating oil, the worm gear and worm at the high position in the housing 2 are always immersed in the lubricating oil during operation, so that the worm and worm gear maintain good lubrication during transmission and the service life is extended. The heat generated when the worm and worm gear mesh and rotate is easily carried away by the lubricating oil, preventing adhesion due to overheating caused by poor lubrication. Therefore, the lubrication effect of using lubricating oil in the transmission box is better than using grease before, and the service life of the transmission box can be greatly extended.

[0029] Embodiment 2

[0030] The difference between this embodiment and Embodiment 1 is:

[0031] A blind hole 9 with a downward opening is provided at the lower part of the hub 8 at the center of the turntable 3, and the outer end of the input shaft 6 is inserted into the blind hole 9 and fixed to the hub 8. The part of the housing 2 corresponding to the upper end of the input shaft 6 is cylindrical, and this part extends into the blind hole 9.

[0032] When the water flow ejected from the swivel water pipe 7 impacts the vanes on the turntable 3 and drives the turntable 3 to rotate, some of the splashing water flow or water droplets will fall onto the outer circle of the hub 8. Since the part of the housing 2 corresponding to the upper end of the input shaft 6 extends into the blind hole 9, these water flow and water droplets will be thrown away from the surface of the hub 8 under the action of the centrifugal force generated when the hub 8 rotates, and will not enter the housing 2 through the gap between the housing 2 and the input shaft 6, and then mix into the lubricating oil to reduce the service life of the transmission components in the housing 2.

[0033] The blind hole 9 is isolated from the top surface of the turntable 3, that is, the blind hole 9 is not communicated with the top surface of the turntable 3. Therefore, the water splashed onto the top surface of the turntable 3 will not flow onto the input shaft 6 through the blind hole 9, and then enter the housing 2 through the gap between the housing 2 and the input shaft 6.

[0034] Embodiment 3

[0035] The difference between this embodiment and Embodiment 2 is as follows:

[0036] A sleeve 10 is provided between the input shaft 6 and the housing 2. The sleeve 10 is fixedly connected with the housing 2 by a set screw screwed on the side surface of the housing 2. The input shaft 6 is rotatably connected through the sleeve 10. The surface of the output shaft 6 is chrome-plated to extend its service life. The sleeve 10 is made of brass or babbitt alloy and can be replaced after wear, so as to extend the overall service life of the transmission box.

[0037] Embodiment 4

[0038] In this embodiment, the transmission structure in Embodiment 3 is applied to the rotary spray gun, which improves the transmission efficiency of the rotary spray gun and extends the service life of the rotary spray gun.

[0039] The above-described embodiments are described in detail and specifically, expressing the preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, it is not limited to the present invention only. The patent scope of the present invention cannot be limited only by this embodiment. That is, any equivalent changes or modifications made according to the spirit disclosed by the present invention, for those researchers or technicians in the field, within the structure of the present invention, local improvements within the system and changes and transformations between subsystems are still within the patent scope of the present invention.

Claims

1. A rotary spray gun transmission structure, comprising a turntable (3) and a transmission box connected to the bottom of the turntable (3), the transmission box comprising a closed box body (2), an input shaft (6) connected to the turntable (3) and having an end facing upward and rotatably connected to one end of the box body (2), an output shaft (1) connected to the other end of the box body (2), and a transmission element connected between the input shaft (6) and the output shaft (1), characterized in that: The box body (2) is provided with a refueling nozzle (4), the box body (2) is provided with a sealing member (11), the sealing member (11) is sleeved outside the output shaft (1), and the box body (2) is filled with lubricating oil.

2. A rotary spray gun transmission structure according to claim 1, characterized in that: A blind hole (9) opening downward is provided at the lower part of the hub (8) at the center of the rotating disk (3); the outer end of the input shaft (6) is inserted into the blind hole (9) and fixedly connected to the hub (8).

3. A rotary spray gun transmission structure according to claim 2, characterized in that: The portion of the box body (2) corresponding to the end of the input shaft (6) extends into the blind hole (9).

4. A rotary spray gun transmission structure according to claim 3, characterized in that: A sleeve (10) is provided between the input shaft (6) and the housing (2); the sleeve (10) is fixedly connected to the housing (2); and the input shaft (6) and the sleeve (10) are rotatably connected through the sleeve (10).

5. A rotary spray gun transmission structure according to claim 2, characterized in that: The blind hole (9) is isolated from the top surface of the rotating disk (3).

6. A rotary spray gun transmission structure according to claim 1, characterized in that: The oiling nozzle (4) is a pneumatic quick connector, and a plugging cover (5) is provided on the pneumatic quick connector.

7. A rotary spray gun transmission structure according to claim 1, characterized in that: The sealing element (11) is at least one of an O-ring and a lip sealing ring.

8. A rotary spray gun, characterized in that: A rotary spray gun transmission structure comprising any one of claims 1 to 7.

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