Adjustable spraying arm

Abstract

The utility model discloses an adjustable spraying arm which comprises a spraying arm body and a height angle adjusting mechanism. The height angle adjusting mechanism comprises an adjusting wheel and a connecting rod, the adjusting wheel is rotatably arranged at the bottom of the distributor, one end of the connecting rod is connected with the adjusting wheel and can move in the radial direction of the adjusting wheel, and the other end of the connecting rod is fixedly connected with the spraying arm. By using the adjustable spraying arm, the nozzles of the spraying arm can always spray asphalt at the same angle and height by rotating the angle of the spraying arm and lifting the height of the spraying arm, so that the consistency of asphalt spraying is ensured, and the construction quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt spreading, in particular to an adjustable spraying arm. Background Art

[0002] An asphalt spreader is a road surface machine that, after the gravel layer is spread, compacted, and evenly leveled, sprays the first coat of asphalt onto the base layer. While still hot, caulking material is applied evenly, followed by a second coat of asphalt, until the topcoat is applied to form the pavement. The spraying arm distributes the asphalt evenly to each nozzle and then sprays it.

[0003] In existing technology, the asphalt storage tank and spray arm are fixed at the rear of the spreader, and the spray arm height is fixed. However, as the asphalt gradually decreases during the spraying process, the asphalt storage tank gradually becomes lighter, causing the rear of the vehicle to gradually tilt. This causes the height and angle of the spray arm to change, resulting in inconsistent asphalt spraying and affecting the quality of asphalt spreading. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an adjustable spray arm capable of adjusting the height and angle of the spray arm.

[0005] In order to achieve the above-mentioned object, the present utility model is implemented through the following technical solutions: an adjustable spray arm, comprising a spray arm and a height angle adjustment mechanism;

[0006] The height angle adjustment mechanism includes an adjusting wheel and a connecting rod. The adjusting wheel is rotatably arranged at the bottom of the spreader. One end of the connecting rod is connected to the adjusting wheel and can move radially along the adjusting wheel, and the other end is fixedly connected to the spray arm.

[0007] When the rear end of the vehicle is lifted up due to light weight, the adjusting wheel can be turned to adjust the angle of the spray arm so that the nozzle on the spray arm maintains the spraying angle. At the same time, the connecting rod moves relative to the adjusting wheel to adjust the height of the spray arm so that the nozzle maintains the spraying height.

[0008] The beneficial effect of the above-mentioned adjustable spray arm is that by rotating the angle of the spray arm and raising and lowering the height of the spray arm, the nozzle of the spray arm can always maintain the same angle and height to spray asphalt, thereby ensuring the consistency of asphalt spreading and ensuring construction quality.

[0009] Furthermore, the height angle adjustment mechanism includes a rotating assembly, which includes a rotating shaft and a drive motor. The adjusting wheel is rotatably connected to the bottom of the spreader through the rotating shaft. The drive motor is fixedly arranged and connected to the rotating shaft through a transmission member, and can drive the rotating shaft to rotate.

[0010] The drive motor drives the shaft to rotate, which in turn drives the adjusting wheel at the bottom of the spreader to rotate, thereby driving the spray arm to move in a circular motion and adjusting the angle of the nozzle relative to the ground.

[0011] Furthermore, the transmission member includes a driving gear and a reduction gear, the driving gear is connected to the output shaft of the driving motor, the reduction gear is connected to the rotating shaft and is larger than the driving gear, and the driving gear is meshed with the reduction gear.

[0012] The output shaft of the drive motor drives the driving gear, which, when engaged, drives the reduction gear, which in turn drives the shaft and the adjustment wheel. The reduction gear is larger than the driving gear, which reduces speed and improves the accuracy of angle adjustment.

[0013] Furthermore, the height angle adjustment mechanism further includes a lifting assembly, the lifting assembly includes a cylinder, the cylinder is fixedly arranged on the adjustment wheel, and the end of the connecting rod is connected to the cylinder.

[0014] Since the tilting of the rear end of the vehicle will cause the overall height of the spray arm and the height angle adjustment mechanism to rise, after adjusting the angle, the cylinder can be used to drive the connecting rod and the spray arm to move downward to keep the distance between the nozzle and the ground consistent.

[0015] Furthermore, two adjusting wheels are symmetrically provided and connected to each other through a rotating shaft, the driving gear is arranged between the two adjusting wheels, and the sides of the two adjusting wheels that are away from each other are connected to a connecting rod through a cylinder.

[0016] Since the spray arm has a certain length, the two adjustment wheels and the connecting rod can better rotate and raise the spray arm and improve stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A side view of an adjustable spray arm provided in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 Front view of the adjustable spray arm shown;

[0020] Reference numerals:

[0021] 10-spray arm, 11-nozzle;

[0022] 20-height angle adjustment mechanism, 21-adjusting wheel, 22-connecting rod, 231-rotating shaft, 232-driving motor, 233-driving gear, 234-reduction gear, 241-cylinder. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0024] See also Figure 1 and Figure 2 The utility model provides an adjustable spray arm, including a spray arm 10 and a height angle adjustment mechanism 20. When the weight of the rear end of the vehicle is reduced and tilted, the height and angle of the spray arm 10 can be adjusted by the height angle adjustment mechanism 20.

[0025] Specifically, the height angle adjustment mechanism 20 includes an adjusting wheel 21 and a connecting rod 22. The adjusting wheel 21 is rotatably arranged at the bottom of the spreader. One end of the connecting rod 22 is connected to the adjusting wheel 21 and can move radially along the adjusting wheel. The other end is fixedly connected to the spray arm 10.

[0026] When the rear of the vehicle is slightly tilted, the spray arm 10 and its nozzle 11 rotate backward and raise their height. By turning the adjustment wheel 21, the spray arm 10 rotates to adjust the angle of the nozzle 11, maintaining a spray angle perpendicular to the ground. Simultaneously, the connecting rod 22 moves relative to the adjustment wheel 21 to adjust the height of the spray arm, maintaining the distance between the nozzle 11 and the ground and ensuring a consistent spray height. By maintaining the same angle and height for the nozzle, asphalt distribution consistency and application quality are ensured.

[0027] Furthermore, the height angle adjustment mechanism 20 includes a rotating assembly and a lifting assembly. The rotating assembly includes a rotating shaft 231 and a drive motor 232. The adjusting wheel 21 is rotatably connected to the bottom of the spreader via the rotating shaft 231. The drive motor 232 is fixedly mounted and connected to the rotating shaft 231 via a transmission member, capable of driving the rotating shaft 231 to rotate. In this embodiment, the transmission member includes a driving gear 233 and a reduction gear 234. The driving gear 233 is connected to the output shaft of the drive motor 232, and the reduction gear 234 is connected to the rotating shaft 231 and is larger than the driving gear 233. The driving gear 233 and the reduction gear 234 mesh with each other.

[0028] The drive motor 232 rotates the driving gear 233. The meshing of the gears drives the reduction gear 234, which in turn drives the rotating shaft 231. This in turn drives the adjustment wheel 21 at the bottom of the spreader, and drives the spray arm 10 in a circular motion, adjusting the angle of the nozzle 11 relative to the ground. The reduction gear 234 is larger than the driving gear 233, which reduces speed and improves the accuracy of angle adjustment.

[0029] Furthermore, the lifting assembly includes a cylinder 241, which is arranged radially along the adjusting wheel 21 and fixedly mounted on the adjusting wheel 21. The end of the connecting rod 22 is connected to the cylinder 241. Since tilting the rear end of the vehicle not only causes the spray arm to rotate but also increases its height, after adjusting the angle, the cylinder 241 can be used to drive the connecting rod 22 and the spray arm 10 downward to maintain a consistent distance between the nozzle and the ground.

[0030] In this embodiment, two adjusting wheels 21 are symmetrically provided and connected to each other via a rotating shaft 231. A driving gear 233 is disposed between the two adjusting wheels 21. The sides of the two adjusting wheels 21 facing away from each other are each connected to a connecting rod 22 via a cylinder 241. Because the spray arm 10 has a certain length, the two adjusting wheels and connecting rod 22 enable better rotation and raising and lowering of the spray arm, while also improving stability.

[0031] The operating principle of the adjustable spray arm is as follows: when the rear end of the vehicle tilts up or down, the drive motor 232 is activated, which drives the rotating shaft 231 through a gear transmission, thereby driving the spray arm 10 to rotate and adjust the angle of the nozzle 11. The cylinder 241 then drives the connecting rod 22 to move, thereby driving the spray arm 10 to rise and fall to adjust the height of the nozzle 11.

[0032] By using the above-mentioned adjustable spray arm, the nozzle of the spray arm can always maintain the same angle and height for spraying asphalt by rotating the angle of the spray arm and raising and lowering the height of the spray arm. This is suitable for both the phenomenon of the rear end of the vehicle tilting up after the asphalt is reduced and the phenomenon of the rear end of the vehicle falling down when the asphalt is loaded too much, thereby ensuring the consistency of asphalt spreading and the quality of construction.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An adjustable spray arm, characterized by: Including spray arm and height angle adjustment mechanism; The height angle adjustment mechanism includes an adjusting wheel and a connecting rod. The adjusting wheel is rotatably arranged at the bottom of the spreader. One end of the connecting rod is connected to the adjusting wheel and can move radially along the adjusting wheel, and the other end is fixedly connected to the spray arm.

2. The adjustable spray arm according to claim 1, characterized in that: The height angle adjustment mechanism includes a rotating assembly, which includes a rotating shaft and a drive motor. The adjusting wheel is rotatably connected to the bottom of the spreader through the rotating shaft. The drive motor is fixedly arranged and connected to the rotating shaft through a transmission member, and can drive the rotating shaft to rotate.

3. The adjustable spray arm according to claim 2, characterized in that: The transmission member includes a driving gear and a reduction gear. The driving gear is connected to the output shaft of the driving motor. The reduction gear is connected to the rotating shaft and is larger than the driving gear. The driving gear is meshed with the reduction gear.

4. The adjustable spray arm according to claim 3, characterized in that: The height angle adjustment mechanism further includes a lifting assembly, which includes a cylinder. The cylinder is fixedly arranged on the adjustment wheel, and the end of the connecting rod is connected to the cylinder.

5. The adjustable spray arm according to claim 4, characterized in that: The regulating wheels are symmetrically provided with two and are connected to each other through a rotating shaft. The driving gear is arranged between the two regulating wheels. The sides of the two regulating wheels that are away from each other are both connected to a connecting rod through a cylinder.

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