JPH0639282B2 - Transport pipe equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention connects a second pipe to a distal end portion of a first pipe via a flexible pipe, and connects the second pipe to the first pipe. The present invention relates to an improvement of a transport tube device that is freely rotatable.

(Prior Art) For example, there is a transport pipe device as shown in FIG. Ie the first
The second pipe C is connected to the tip end of the pipe A via the flexible pipe B, and the first arm D is integrally formed with the second pipe C from the first pipe A.
The pipe C projects from the second pipe C, while the second arm E integrally projects from the pipe C toward the first pipe A. The first arm D tip and the second bay E tip are pivotally supported F near the center of the flexible tube B, and by the telescopic actuator G provided between the first arm D base and the second tube C, The second pipe C is rotatable with respect to the first pipe A.

(Problems to be Solved by the Invention) In the transport pipe apparatus of FIG. 7, although the second pipe C is rotated about the axis F by the expansion / contraction actuator G, the flexible pipe B is not bent about the axis F. . Therefore, the connection distance between the first tube A and the second tube C of the flexible tube B slightly changes depending on the rotation angle of the second tube C. There is no problem in the case where the flexible tube B has elasticity enough to easily follow the change in the distance, but in the case of the flexible tube B in which the elasticity is not expected so much, the rotation of the second tube C is reduced. With each movement, a force to pull out from the first pipe A or the second pipe C acts, which is not preferable.

The present invention has been made in view of the above circumstances, and comprises a second
An object of the present invention is to provide a transportation pipe device in which a pulling force is not applied to a flexible pipe as much as possible when the pipe is rotated with respect to the first pipe.

(Means for Solving the Problem) The transport pipe device of the present invention does not integrate the conventional second arm E with the second pipe C, but plays a role as a support fitting slidable with respect to the second pipe C. It is fitted and one end of the drive device is connected to the support fitting.

Specifically, a first pipe, a second pipe connected to the first pipe via a flexible pipe, a proximal end arm protruding from the first pipe toward the second pipe, and a base A support fitting for the second pipe, which is rotatably supported by the end portion of the end arm and whose tip end is loosely fitted to the outer peripheral portion of the second pipe, and the support fitting provided between the first pipe and the support fitting. And a drive device for the second tube.

(Operation) As a result, the change in the connection distance between the flexible tubes that occurs when the second tube is rotated by the drive device is canceled by the sliding of the second tube with respect to the support fitting.

(Example) In this example, the case where the transport pipe device is used for the suction pipe VP of the dust suction vehicle will be described, but the present invention is not limited to this embodiment.

T is a waste storage tank installed on the basement floor of the high-rise building, and is connected to the lower part of the chute S. It is projected H to a specific place on the ground (beside the road) via the opening / closing valve V ₁ on the downstream side of the waste storage tank T, via the underground transportation pipe BP. The protruding tube H is normally closed with a manhole.
V _{2 is} a chute S connected to the upstream side of the waste storage tank T
It is an on-off valve. V ₃ is an opening / closing valve of the air introduction pipe IP to the waste storage tank T.

Reference numeral 1 denotes a shiyashi of a garbage suction vehicle, and the shiyashi 1 is equipped with a garbage storage tank 2. The rear portion of the dust storage tank 2 is opened as a dust discharge port 2a, and the dust discharge port 2a is opened and closed by an opening / closing door 3 having an upper portion supported by a horizontal shaft 3a. Four
Is a telescopic actuator for opening and closing the door.
The lower part of the rear end of the dust storage tank 2 is horizontally supported by the palm 1 and can be tilted rearward by the telescopic actuator 5.

VA is a suction device mounted on the coconut 1 between the operator's cab 1a of the waste suction vehicle and the waste storage tank 2. Although not shown, the suction device VA comprises a well-known water scrubber, a roots blower, and a silencer, which are sequentially connected from the upstream side. The air suction opening 6 of the water scrubber is opened rearward. This rearward facing air suction end opening 6 is automatically connected to the air discharge end opening 7 provided in the front upper portion of the dust storage tank 2 in the forward direction when the dust storage tank 2 is not tilted, and when tilted. Is configured to be in a disconnected state.

The VP is a suction pipe as a transportation pipe device of the embodiment of the present invention, and is connected to the dust storage tank 2. That is, the first pipe 11, which is the proximal end pipe, serves as the swirl pipe and serves as the waste storage tank 2
The vertical shaft 11a is supported on the upper surface of the center of the front end. First tube 1
1 is forcibly swung by a drive unit 12 including two telescopic actuators and a chain and a chain sprocket. The second pipe 14 is connected to the tip portion of the first pipe 11 via the first flexible pipe 13 as an undulating pipe. That is, the first tube 1
A base end arm 15 is bored from 1 toward the second pipe 14, and a second end of the base end arm 15 is loosely fitted to the outer periphery of the second pipe 14 with a gap 16a. Support fitting 16 for pipe 14
Is a horizontal shaft support 16b. The axis 16 is orthogonal to the axial directions of the first tube 11 and the second tube 14, and is located near the center of the first flexible tube 13. And the first tube 1
The second tube 14 is forcibly undulated by a telescopic actuator 17 (driving device for the second tube 14) provided between the base end arm 15 and the support fitting 16 which are integral with the first unit. The third tube 18 is inserted as a curved tube at the tip of the second tube 14, and the telescopic actuator 19 forcibly retracts the tube. The tip opening of the third pipe 18 is directed downward. A fourth pipe 21 is connected and suspended as a tip pipe to the tip of the third pipe 18 via a second flexible pipe 20. The second pipe 1 is provided on the upper surface of the waste storage tank 2.
A support frame 22 is provided upright to support the intermediate portion of the second pipe 14 in a state where the suction pipe VP is laid down and to prevent the suction pipe VP from swinging in the left-right direction.

At the tip of the fourth pipe 21, three claws 23 are rotatably supported by a tangential axis 23a on the circumference of the fourth pipe 21 at equal intervals, and are forcibly rotated by a telescopic actuator 24. These claws 23 can connect and secure the fourth pipe 21 to the discharge pipe H.

The claw 23 and the expansion / contraction actuator 24 may be provided on the discharge pipe H side.

Further, a support member 25 for the fourth pipe 21 is provided at the lower rear end of the waste container 2 (lower part of the opening / closing door 3 in the embodiment) so as to project rearward. That is, on the upper surface of the support member 25, a truncated cone-shaped convex portion 25a inclined rearward is formed.
The storage position is determined by inserting the fourth pipe 21 into the.

Further, a wheel 26 is rotatably supported on a horizontal shaft 26a on the side of the fourth pipe 21 that faces the waste container 2. The wheels 26 are rollable on a guide surface 3b formed on the wall surface of the dust storage tank 2 above the support member 25 (in the embodiment, the rear wall surface of the opening / closing door 3). The guide plate 2 for restraining the axial displacement of the wheel 26 is provided on both upper sides of the support member 25.
7 are provided in the vertical direction.

Hereinafter, an operation in the case where the dust dumped in the chute S and accumulated in the dust storage tank T is sucked into the dust storage tank 2 will be described.

First, the operator stops the suction wheel in the solid line state of FIG. 1 (the suction tube VP is in the retracted state and the claw 23 is in the closed state) at a predetermined position near the discharge tube H as shown in FIG.

Then, the expansion / contraction actuator 17 is actuated to operate the second pipe 14.
The second flexible tube 20 and the fourth tube by undulating the shaft 16b around the shaft 16b, operating the telescopic actuator 19 to move the third tube 18 in and out, and turning the first tube 11 by the drive device 12. 21 is extended to the side of the suction wheel, and the fourth pipe 21 is docked with the discharge pipe H with the claw 23 opened.

Then, the manhole of the discharge pipe H is moved to the fourth position by the suction device VA.
It is adsorbed to the tube 21, and its manhole is replaced with a predetermined position as appropriate. That is, the discharge pipe H is opened.

After that, the fourth pipe 21 is again docked with the opened discharge pipe H, and further, the telescopic actuator 24 is used to move all the pawls 2
3 is rotated to the closed position, and the fourth pipe 21 is fixed to the discharge pipe H as shown in FIG.

Then, the on-off valves V ₂ and V ₃ are closed and the on-off valve V ₁ is opened.
Further, the suction device VA is operated to substantially vacuum the dust storage tank T, the transport pipe BP, the suction pipe VP, and the dust storage tank 2. After that, when the open / close valve V ₃ of the air introduction pipe IP is opened, the dust in the dust retention tank T is sucked into the dust storage tank 2. If it is not possible to suck all the dust with one suction, the above operation may be repeated.

When the dust suction work is completed, the suction pipe VP is returned to the original position shown by the solid line in FIG. The final process of this returning operation, that is, the second pipe 14 is turned down and the fourth pipe 21 is moved to the convex portion 25.
The fourth pipe 21 may come into contact with the opening / closing door 3 due to the bending of the second flexible pipe 20 in the process of inserting into the a. However, at this time, since the wheel 26 rolls on the guide surface 3b, the opening / closing door 3 and the fourth pipe 21 are not damaged, and the wheel 2
Since the left and right sides of 6 are also restrained by the guide plate 27, the fourth pipe 21
Will be smoothly inserted into the convex portion 25a and will be accommodated in a predetermined position of the support member 25.

When discharging the sucked dust, as shown in Fig. 5,
The suction pipe VP may be swung to the side of the suction wheel, the opening / closing door 3 may be opened, and the dust storage tank 2 may be tilted rearward.

By the way, when the suction pipe VP is moved from the storage state to the suction work state or from the suction work state to the storage state, the second pipe 14 is moved by the expansion / contraction actuator 17.
Since the first flexible tube 13 does not bend around the shaft 16b when the first flexible tube 13 is undulated with respect to the first tube 11, the connection distance between the first flexible tube 13 and the second flexible tube 13 is It changes slightly.
However, if the change in the distance between the connections cannot be absorbed only by the elasticity of the first flexible tube 13, it will be absorbed by the sliding of the second tube 14 with respect to the support fitting 16.

The above description is an example, and for example, the second pipe 14 may be swiveled around a vertical axis.

(Effects of the Invention) As described above, the present invention connects the second pipe 14 to the distal end of the first pipe 11 via the flexible pipe 13 and rotates the second pipe 14 with respect to the first pipe 11. Free-moving transport pipe device V
P, the support fitting 16 of the second pipe 14 is pivotally supported 16b on the tip end of the proximal arm 15 projecting from the first pipe 11, and the support fitting 16 forms a gap 16a at the outer peripheral portion of the second pipe 14. Since the second pipe 14 is loosely fitted to the first pipe 11, the connection distance between the first pipe 11 and the second pipe 14 of the flexible pipe 13 changes slightly when the second pipe 14 rotates. Even if the change in the distance between the connections cannot be absorbed only by the elasticity of the flexible tube 13, the second tube 14
Can be absorbed by sliding on the support fitting 16.

Therefore, an unreasonable pulling force does not act on the flexible tube 13, the flexible tube 13 is prevented from coming off, and the durability is also improved.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is an overall side view of a dust suction vehicle, FIG. 2 is a lateral cross-sectional view of a main part, and FIG. 3 is a cross section of a suction pipe near the fourth pipe. The plan view and FIGS. 4 to 6 are explanatory views of the operation. FIG. 7 is an explanatory view of a conventional transportation pipe device. VA ... Suction device, VP ... Transport pipe device (suction pipe), 2
…… Gas storage tank, 11 …… First tube, 13 …… First flexible tube, 14 …… Second tube, 15 …… Base arm, 16 …… Supporting metal fitting, 16a …… Gap, 16b …… Shaft, 17 ... Drive device.

Claims (1)

[Claims] 1. A first tube, a second tube connected to the first tube via a flexible tube, a proximal end arm projecting from the first tube toward the second tube, and the base. A support fitting for the second pipe, which is rotatably supported by the end portion of the end arm and whose tip end is loosely fitted to the outer peripheral portion of the second pipe, and the support fitting provided between the first pipe and the support fitting. A transport tube device, comprising: a drive device for a second tube.