JP2001087688A - Spray apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to swing a nozzle by a predetermined angle even if the nozzle is turned downward in a spray apparatus adapted to a work vehicle such as a concrete spraying vehicle. SOLUTION: This spray apparatus is constituted of a nozzle 2, a shaking motor 3, a bearing 4 and a revolving means 5 and, especially, the bearing 4 for supporting the shaking motor 2 with respect to a fixing member 15 so as to make the same rotatable around a rotary shaft and the revolving means 5 for revolving the shaking motor 3 by a predetermined angle with respect to the fixing member 15 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a spraying device applied to a working vehicle such as a concrete spraying vehicle.

[0002]

2. Description of the Related Art Conventionally, as a working vehicle such as a concrete spraying vehicle, for example, the one shown in FIG. 4 is known. The work vehicle 50 is provided with a vehicle body 51, a traveling device 52 provided thereon and including an engine and wheels, a driver seat 53 provided in front of the vehicle body 51, and a turnable front side of the vehicle body 51. A revolving body 54, a revolving drive (not shown) for revolving the revolving body 54 with respect to the vehicle body 51,
4, a boom 55 provided to be able to ascend, a boom cylinder 56 to elevate the boom 55 with respect to the rotating body 54,
An elevating body 57 provided to be able to elevate on the boom 55, and an elevating cylinder 5 for elevating the elevating body 57 with respect to the boom 55
8, a moving body 59 provided on the elevating body 57 so as to be movable in the front-rear direction, a moving cylinder 60 for moving the moving body 59 with respect to the elevating body 57, and a spray of concrete or the like provided on the moving body 59. A spraying device 70 for spraying objects is provided. The spraying device 70 includes a nozzle 71 that injects an object to be sprayed, and an oscillating motor 72 that is fixed to a fixed member 72 such as the moving body 59 and rotates the nozzle 71 around a longitudinal axis by approximately 360 degrees from a downward position. It is configured.

[0003] In such a device, when the swing motor is operated, the nozzle is moved from the downward position by approximately 360 in one direction.
It can reciprocate only by one degree (one rotation). Therefore, for example, by spraying an object to be sprayed, such as concrete, from a nozzle in a tunnel, the object to be sprayed can be sprayed in the direction of the nozzle, and the nozzle can be tilted left and right by a predetermined angle to the top and side surfaces of the tunnel. The object to be sprayed can be sprayed evenly by swinging (swinging) only (for example, approximately 10 to 30 degrees).

[0004]

However, in such a device, when the nozzle is directed downward, the nozzle cannot be swung right and left by a predetermined angle because the same direction corresponds to the start point and the end point of the oscillating motor. It was not possible to evenly spray the objects to be sprayed, such as concrete. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to solve the problem. The object of the present invention is to provide a spraying device that can swing a predetermined angle even when the nozzle is directed downward. To offer.

[0005]

The spraying device according to the present invention basically comprises a nozzle for injecting an object to be sprayed, a rocking motor for rotating the nozzle by approximately 360 degrees from a downward position, and a fixing member comprising a rocking motor. And a rotating means for rotating the oscillating motor by a predetermined angle with respect to the fixed member.

When the swing motor is operated, the nozzle is rotated from the downward position by approximately 360 degrees in one direction. When the object to be sprayed is ejected from the nozzle, the object to be sprayed is sprayed in the direction of the nozzle. When the nozzle is turned upward or sideways by the swing motor and swung by a predetermined angle, the object to be sprayed is evenly sprayed. When the rotating means is operated, the rocking motor rotatably supported about the rotation axis with respect to the fixed member by the bearing is rotated by a predetermined angle. For this reason, since the position of the rotation start point and the end point of the rocking motor is moved by a predetermined angle from below, even if the nozzle is turned downward, the nozzle can be swung by the predetermined angle by the rocking motor. Therefore, it is possible to uniformly spray the object to be sprayed from the nozzle.

The rotating means comprises a cylinder provided on the fixed member, and a link provided between the rocking motor and the cylinder for rotating the rocking motor by approximately 90 degrees with respect to the fixed member. Is preferred. If you do this,
The structure is simple and the operation can be assured.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway side view showing a spray device of the present invention. FIG. 2 is a front view of FIG. 1. FIG.
FIG. 2 is a sectional view taken along the line AA in FIG.

The spraying device 1 includes a nozzle 2, a swing motor 3,
The main part is constituted by the bearing 4 and the rotating means 5, and is applied to a working vehicle 50 such as a concrete spraying machine.

[0010] The nozzle 2 is for injecting an object to be sprayed.
In this example, concrete is injected from the front end (the lower side in FIG. 1), and at the base end, though not shown, a concrete supply source mounted on the vehicle body 51 of the work vehicle 50 via a hose. Connected.

The oscillating motor 3 rotates the nozzle 2 by approximately 360 degrees from a downward position. In this example, the oscillating motor 3 is a hydraulic motor (rotary cylinder), and rotates around an axis in the front-rear direction (left-right direction in FIG. 1). A main body 7 having an output shaft (rotary shaft) 6 rotatable around the main body, and a case 8 having a rectangular tubular shape covering the main body 7 so that the output shaft 6 protrudes from the front side. The output shaft 6 of the oscillating motor 3 is provided with a rotating body 9.
And a second rocking motor 12 having a main body 10 attached thereto and having an output shaft 11 rotatable around an axis perpendicular to the output shaft 6 of the rocking motor 3 (the left-right direction in FIG. 2).
And a second rotating body 13 attached to the output shaft 11 thereof.
The nozzle 2 is mounted via a nozzle holder 14 provided on the nozzle 2.

The bearing 4 supports the oscillating motor 3 so as to be rotatable about a rotation axis with respect to the fixed member 15. In this example, the bearing 4 is a cylindrical member provided at the tip of a moving body 59 of the work vehicle 50. The inner cylinder 16 is provided inside the case 8 of the oscillating motor 3 on the rear side, and is fitted to the outer side of the inner cylinder 16 so as to be immovable in the front-rear direction and rotatable around a rotation shaft (the output shaft 6 of the oscillating motor 3). And a cylindrical outer cylinder 17.

The turning means 5 turns the swing motor 3 with respect to the fixed member 9 by a predetermined angle (for example, about a quarter of the rotation of the swing motor 3, that is, about 90 degrees). , A cylinder 18 provided on the fixing member 9, and a fixing member 15 provided between the swing motor 3 and the cylinder 18.
And a link 19 for rotating the swing motor 3 by approximately 90 degrees. The cylinder 18 is a hydraulic cylinder, and its tail side is rotatably connected to the lower end of a cylinder bracket 20 suspended from the fixed member 15 so as to be rotatable around the front-rear axis. The link 19 is attached to a support plate 21 attached to the rear side of the case 8 of the oscillating motor 3, a first link 22 having one end rotatably connected to the front and rear axis around the support plate 21, and the fixed member 15. A second link 24 having a substantially L-shape with a plate 23 and one end connected to the other end of the first link 22 and a bent portion connected to the plate 23 so that the other end is rotatable around the front-rear axis on the rod side of the cylinder 18. And consists of

Next, the operation will be described based on such a configuration. When the oscillating motor 3 is operated, the nozzle 2 is rotated from the downward position by approximately 360 degrees in one direction. When the object to be sprayed is ejected from the nozzle 2, the object to be sprayed is sprayed in the direction of the nozzle 2. The nozzle 2 is turned upward or sideways by the oscillating motor 3 to a predetermined angle (for example,
Approximately 1/36 to 1/12 of rotation, ie, approximately 10 to 3
When it is swung by 0 degrees, the object to be sprayed is evenly sprayed. When the cylinder 18 of the rotating means 5 is extended,
The swing motor 3 supported by the bearing 4 so as to be rotatable about the rotation axis with respect to the fixed member 15 is substantially 9
Rotated by 0 degrees. For this reason, since the position of the rotation start point and the end point of the swing motor 3 is moved by about 90 degrees from below,
Even if the nozzle 2 is turned downward, it can be swung by a predetermined angle by the swing motor 3. Therefore, the object to be sprayed from the nozzle 2 can be evenly sprayed.

Although the nozzle 2 is provided on the output shaft 6 of the rocking motor 3 via the second rocking motor 12 in the above example, the present invention is not limited to this. For example, the second rocking motor 12 may be omitted. May be provided directly on the output shaft 6 of the swing motor 3. In the above example, the link 19 of the rotating means 5 is a so-called two-node link composed of the first link 22 and the second link 24, but is not limited thereto, and may be composed of one or more links. But it is good.

[0016]

As described above, according to the present invention, as described above,
The following excellent effects can be obtained. (1) A bearing comprising a nozzle, a rocking motor, a bearing, and a rotating means, in particular, a bearing for rotatably supporting the rocking motor about a rotation axis with respect to a fixed member, and a rocking motor for a predetermined angle with respect to the fixed member. Since the rotating means for rotating is provided, the nozzle can be swung by a predetermined angle even if the nozzle is directed downward. (2) Since only a bearing for supporting the swing motor so as to be rotatable about the rotation axis with respect to the fixed member and a rotating means for rotating the swing motor by a predetermined angle with respect to the fixed member are provided, the structure is simple. It is relatively simple and inexpensive, and can be easily applied to existing ones.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a spray device of the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

FIG. 4 is a side view showing a concrete spraying vehicle.

[Explanation of symbols]

1, 70 spraying device, 2, 71 nozzle, 3, 72 swing motor, 4 bearing, 5 rotating means, 6, 11 output shaft, 7, 10 body, 8 case, 9 rotation Body, 12 ...
Second rocking motor, 13: second rotating body, 14: nozzle holder, 15: fixing member, 16: inner cylinder, 17: outer cylinder, 18 ...
Cylinder, 19 ... link, 20 ... cylinder bracket,
21 ... support plate, 22 ... first link, 23 ... plate, 24
... Second link, 50 ... Work vehicle, 51 ... Car body, 52 ... Traveling device, 53 ... Driver seat, 54 ... Slewing body, 55 ... Boom,
56: boom cylinder, 57: elevating body, 58: elevating cylinder, 59: moving body, 60: moving cylinder.

Claims (2)

[Claims] 1. A nozzle for injecting an object to be sprayed, an oscillating motor for rotating the nozzle by approximately 360 degrees from a downward position, a bearing for supporting the oscillating motor rotatably around a rotation axis with respect to a fixed member, and A rotating means for rotating the swing motor by a predetermined angle with respect to the member; 2. The rotating means comprises a cylinder provided on a fixed member, and a link provided between the swing motor and the cylinder for rotating the swing motor by approximately 90 degrees with respect to the fixed member. The spraying device according to claim 1, wherein