JP2553919B2 - Suction car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is configured to, for example, suck a transported object such as dust collected in a dust storage tank into a storage tank mounted on a suction vehicle by a suction device. It is about what you did.

(Prior art and problems) For example, as a method of transporting waste, a method of loading the waste on a garbage truck and transporting it to an incinerator, or throwing the waste into a waste storage container installed in advance on the ground, and depending on the time, the waste storage container The method of transporting by truck is adopted. However, such a method has a limit in beautifying the town and improving sanitation. Therefore, a method is being considered in which waste is once stored in a waste storage tank, the waste is sucked by a suction device, and piped to a waste storage tank of a suction truck.

By the way, the suction pipe connected to the storage tank of the suction wheel requires several degrees of freedom, and its tip pipe is connected and suspended via a flexible pipe. Then, when the suction pipe is in the retracted state, the front end pipe is supported by the supporting member projecting below the rear end of the storage tank, so that the suction pipe is prevented from swaying.

However, when the suction pipe is moved from the retracted state to the working state or from the working state to the retracted state, since the flexible tube is bent, the tip tube collides with the wall surface of the storage tank or rubs against it. Cause damage. There is also a problem that the tip tube is difficult to fit in a predetermined position of the support member.

(Means and Actions for Solving the Problems) The present invention has been made in view of the above-described circumstances, and the tip tube connected and hung through the flexible tube has a wheel on the side facing the storage tank. And a guide surface of the wheel is formed on the wall surface of the storage tank above the support member.

Further, guide plates for restraining lateral displacement of the wheel are provided on both upper sides of the support member.

As a result, when the suction pipe is moved between the working state and the storage state, the wheels are guided by the wall surface of the storage tank and the guide plate.

(Example) In the following examples, the suction wheel is described as a dust suction wheel, but the present invention is not limited to this embodiment.

S is a chute such as a high-rise building, and a dust storage tank T is provided at the lower end of the chute S. The downstream side of the waste storage tank T is projected H to a specific location A (on the side of the road) on the ground via the on-off valve V ₁ , the underground transportation pipe P, and the underground transportation pipe P. The protruding tube H is normally closed with a manhole. An open / close valve V2 for opening and closing the chute S is also provided on the upstream side of the waste storage tank T. Furthermore, garbage storage tank T
An air introduction pipe I having an opening / closing valve V ₃ is provided in the pipe.

Reference numeral 1 denotes a chassis of a dust suction vehicle. The chassis 1 is equipped with a storage tank 2 which has a dust discharge port 2a at a rear portion thereof and a horizontal pivot 3a of an opening / closing door 3 of the discharge port 2a.
Reference numeral 4 denotes a telescopic actuator for opening and closing the opening / closing door 3. The lower part of the rear end of the storage tank 2 is horizontally supported by the chassis 1 and can be tilted rearward by the telescopic actuator 5.

VA is a suction device mounted on the chassis 1 between the operator's cab 1a of the dust suction truck and the storage tank 2. Suction device VA
Although not shown, a well-known water scrubber, a roots blower, and a silencer are connected in this order from the upstream side.
The roots blower is driven by using the power of the vehicle running engine. Further, the air intake end opening 6 of the water scrubber is opened upward. When the storage tank 2 is not tilted, the opening 6 is automatically connected to the air discharge end opening 7 provided downward on the front upper surface of the storage tank 2, and is disconnected when the storage tank 2 is tilted. Is configured.

PA is a suction pipe connected to the upper surface of the front end center of the storage tank 2. That is, a swivel pipe 11 is vertically supported on the upper surface of the center of the front end of the storage tank 2 and can be swung forcibly by a drive device 12 including two telescopic actuators, a chain and a sprocket. Also, the first part is provided at the tip of the swirl tube 11.
An undulating tube 14 is horizontally supported 14a via a flexible tube 13 and can be forcibly undulated by a telescopic actuator 15. Further, a bending tube 16 is inserted at the tip of the undulating tube 14, and can be forcibly retracted and retracted by a telescopic actuator 17. The tip of the bending tube 16 is bent downward. Further, a tip tube 19 is connected and suspended at the tip of the bending tube 16 via a second flexible tube 18. Therefore, the second flexible tube 18 and the tip tube 19
Will be suspended by connecting to at least a displacement pipe (a curved pipe 16 that undulates around the shaft 14a) that can be displaced up and down. A support stand 20 for the undulating pipe 14 in the retracted state of the suction pipe PA is provided upright on the intermediate upper surface of the storage tank 2.

At the tip of the tip tube 19, three claws 21 are rotatably supported on the circumference of the tip tube 19 at equal intervals by a tangential axis 21a, and are forcedly turned by a telescopic actuator 22. These claws 21 can connect and secure the tip tube 19 to the discharge tube H of the transport tube P.

Further, the tip end pipe 19 is a lower part of the rear end of the storage tank 2 (lower part of the opening / closing door 3 in the embodiment) when the suction pipe PA is stored.
It is designed to be supported by a support member 23 projecting rearward from. That is, a rearward-inclined truncated cone-shaped convex portion 23a is formed on the upper surface of the support member 23, and the tip end tube 19 is inserted into the convex portion 23a to determine the storage position.

Further, a wheel 24 is rotatably supported by a horizontal shaft support 24a on the side of the tip tube 19 facing the storage tank 2. The wheel 24 is rollable on a guide surface 3b formed on the wall surface of the storage tank 2 above the support member 23 (in the embodiment, the rear wall surface of the opening / closing door 3). Further, guide plates 25 for restraining the lateral displacement of the wheels 24 are provided on both upper sides of the support member 23 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 storage tank 2 will be described.

First, the operator stops the suction wheel in the state shown by the solid line in FIG. 2 (the suction pipe PA is in the stored state) at a predetermined position near the specific location A as shown in FIG. At this time, the expansion / contraction actuator 22 is in the extended state, and all the claws 21 are in the open position.

Then, the expansion / contraction actuator 15 is extended to raise the undulating tube 14. At this time, since the shape of the convex portion 23a is a truncated conical shape that is inclined rearward, the tip tube 19 comes out of the support member 23 without contacting the convex portion 23a. After that, the expansion / contraction actuator 17 is extended to project the bending tube 16 rearward. Ie suction pipe
PA is in the state shown by the dashed line in FIG. Next, the swivel tube 11 is swung appropriately by the driving device 12, and the second flexible tube 18 and the tip tube are swung.
The extension tube 19 is extended to the side of the suction wheel, the bending tube 16 is retracted and retracted by the telescopic actuator 17, and the undulating tube 14 is undulated by the telescopic actuator 15, so that the tip tube 19 becomes the discharge tube H of the transport tube P. Dock it.

Then, the suction tank VA and the suction pipe PA are made to have a negative pressure by the suction device VA, and the manhole of the discharge pipe H is sucked to the tip pipe 19,
Further, the manhole is appropriately moved to a predetermined position to release the negative pressure and set.

After that, the tip tube 19 is docked again with the opened discharge tube H, and further, the expansion / contraction actuator 22 is contracted to rotate all the claws 21 to the closed position, so that the tip tube 19 is discharged as shown in FIG. To be tied to.

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 make the waste storage tank T, the transport pipe P, the suction pipe PA and the storage tank 2 substantially vacuum. After that, when the open / close valve V ₃ of the air introduction pipe I is opened, the dust in the dust storage tank T is sucked into the storage tank 2. If it is not possible to suck all the dust with one suction, the above operation may be repeated.

Then, when the dust suction work is completed, the suction pipe PA is returned to the position of the original traveling state by an operation substantially opposite to the above. The final step of this operation, that is, the bending tube 16 is shown in FIG.
The tip tube 19 may come into contact with the opening / closing door 3 due to the bending of the second flexible tube 18 in the process of retracting the undulating tube 14 after being retracted from the position indicated by the dashed line. However, in this case,
The wheel 24 rolls on the guide surface 3b formed on the rear wall surface of the opening / closing door 3, and finally the left and right sides of the wheel 24 are also restrained by the guide plates 25, and the tip tube 19 is smoothly inserted into the convex portion 23a. Support member 23
It will be put in place.

Since the sucked dust is likely to be accumulated on the front part of the storage tank 2, the telescopic actuator 5 is extended after the suction work is completed, and the storage tank 2 is tilted rearward, so that the storage tank 2
It is sufficient to compress the inside dust backward. As a result, the dust is efficiently stored in the storage tank 2.

When discharging the sucked dust, the suction pipe PA may be turned to the side of the suction wheel, the opening / closing door 3 may be opened, and the storage tank 2 may be tilted rearward, as shown in FIG.

The above description is an example, and for example, in the case of a structure in which the displacement pipe is moved up and down instead of the undulation around the shaft 14a, the wheel 24 is guided by the guide surface 3b even when the suction pipe PA is moved from the stored state to the working state. May roll over.

(Effects of the Invention) As described above, the present invention is a suction pipe PA in which a tip pipe 19 is hung by connecting a displacement pipe (bending pipe 16 in the embodiment) which can be displaced at least up and down through a second flexible pipe 18. The storage tank 2
And a wheel 24 is horizontally supported on the side of the tip tube 19 that faces the storage tank 2 and the wheel 24 is a guide surface formed on the wall surface of the storage tank 2.
Since it is allowed to roll along 3b, when the suction pipe PA is moved from the retracted state to the working state or from the working state to the retracted state, the tip tube 19 is directly moved by the deflection of the second flexible tube 18 into the storage tank 2 It does not collide with the wall or rub against it to cause damage.

Further, since the guide plates 25 for restraining the lateral displacement of the wheels 24 are provided on both upper sides of the support member 23 in the vertical direction, when the suction pipe P is moved from the working state to the retracted state,
Is guided by the guide surface 3b and the guide plate 25, and the tip tube 19 is smoothly placed in a predetermined position of the support member 23.

[Brief description of drawings]

Each of the drawings shows an embodiment of the present invention. Fig. 1 is a lateral cross-sectional view of a main part (a cross-sectional view taken along line I of Fig. 2), Fig. 2 is a side view of a suction wheel, and Figs. FIG. 5 is an overall schematic explanatory view of the operation and FIG. S ... Chute, T ... Garbage storage tank, P ... Transport pipe, H ... Discharge pipe, VA ... Suction device, PA ... Suction pipe, 2
…… Container tank, 3 …… Opening / closing door, 3b …… Guide surface, 14 ……
Undulating pipe, 16 …… Bending pipe (displacement pipe), 18 …… Second flexible pipe,
19 ... Tip tube, 21 ... Claw, 23 ... Support member, 23a ... Convex part, 24 ... Wheel, 24a ... Shaft, 25 ... Guide plate.

Claims (2)

(57) [Claims] 1. A suction wheel comprising a storage tank, a suction pipe connected to the storage tank, and a support member projecting from a lower portion of the storage tank and supporting a tip pipe of the suction pipe, wherein the suction pipe is provided. Includes at least a displacement pipe that can be displaced up and down, and a tip pipe that is connected to and suspended from the displacement pipe via a flexible pipe, and a wheel is horizontally supported on the tip pipe on the side facing the storage tank. Further, the suction wheel is configured such that a guide surface of the wheel is formed on a wall surface of the storage tank above the support member. 2. The suction wheel according to claim 1, wherein guide plates for restraining lateral displacement of the wheel are provided on both upper sides of the support member in the vertical direction.