JPH0289701A - Vacuum car - Google Patents

Abstract

PURPOSE:To prevent the collision against a storage tank by providing a means by which an intermediate pipe is restricted for the whirl thereof unless the intermediate pipe exists in the projecting position in the specific whirling range of the pipe according to the detecting signals for both the whirl position of the pipe and the retraction or the projection position thereof and the signal from an operation switch. CONSTITUTION:The signals from sensors 32, 33, LS1 and LS2 which detects the whirl position of a suction pipe VP and the retraction or the projection position of an intermediate pipe 18, and the signals from operation switches SW1 to SW3 are inputted to a suction pipe driving controller CB. According to these signals, the whirl of this suction pipe VP is restricted by a whirl restricting means of the controller CB unless the intermediate pipe 18 exists in the projection position in the specific whirl ranges DL and DR of the suction pipe VP. As a result, when the suction pipe VP is whirled from the storage position to the suction operation ranges WL and WR or from the suction operation ranges WL and WR to the storage position, a front end pipe 21 may be prevented from colliding against the corner part of the storage tank 2.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is directed to transporting materials such as garbage collected in a garbage storage tank by a suction device to a storage tank mounted on a suction vehicle via a suction pipe. Concerning something that attracts attention.

(Prior Art) For example, as a method of transporting garbage, there is a method in which garbage is placed in a garbage storage container installed on the ground, and the garbage storage container is transported by truck at a certain time. However, even this method is not completely satisfactory in terms of beautification and hygiene of the town. Therefore, a method is being considered in which the garbage is stored in a garbage storage tank installed underground or the like, and the garbage is sucked into the garbage storage tank of a suction vehicle through a suction pipe by a suction device.

As a garbage suction vehicle as mentioned above, the proximal end of the suction pipe is vertically supported on the upper surface of the garbage storage tank so as to be able to rotate freely, and the tip end is supported with a heavy weight that connects the tip pipe along the side wall of the garbage storage tank. What has been lowered is considered.

(Problem to be Solved) By the way, the suction pipe is usually fixed in a stored position with respect to the suction wheel, and during suction work, the suction pipe is rotated or otherwise driven so that its tip tube extends to the side of the suction wheel and the waste is removed. The tip tube is connected to the discharge tube of the storage tank.

When operating the suction pipe from the storage position to the suction work position or from the suction work position to the storage position, care is taken to prevent the tip pipe from colliding with the corner part of the waste storage tank, especially when turning the suction pipe. There is a need to. Therefore, if the connecting intermediate pipe between the proximal end pipe and the distal end pipe of the suction pipe is made long, the above-mentioned collision will be avoided. Therefore, if the intermediate tube is configured to be able to come out and go out, the tip tube can be stored without causing the tip tube to protrude significantly from the body of the suction vehicle.However, if the operator accidentally retracts the intermediate tube, It is quite possible that the suction pipe may turn around and cause the tip pipe to collide with the waste storage tank.

(First Means for Solving the Problems) This invention has been made in view of the above-mentioned circumstances, and when the suction pipe is rotated, the suction pipe is rotated so that the suction pipe is The purpose of this project is to provide a suction vehicle with a

That is, the present invention includes a storage tank, a proximal end tube that is vertically supported on the upper surface of the storage tank so as to be pivotable, and an intermediate tube that is freely retractable in at least a substantially horizontal direction with respect to the proximal end tube connected to the intermediate portion. Furthermore, at the tip, a suction pipe is connected and suspended from above the storage tank along substantially the side wall, and a sensor for detecting the turning position of the suction pipe and the protruding and retracting position of the intermediate pipe. , a control device that receives signals from these sensor operation switches and drives the suction pipe, and the control device includes a control device in which the intermediate pipe is in a protruding position in a specific turning region of the suction pipe. including a turning restriction means that restricts the turning unless
It is a suction vehicle.

(Function) When operating the suction pipe from the storage position to the suction work position (6) or from the suction work position to the storage position, only if the intermediate pipe of the suction pipe is in the protruding position, will the suction pipe pass through the specific turning area. can.

(Example) Although this example suction vehicle will be explained as a garbage suction vehicle, the present invention is not limited to this embodiment.

T is a garbage storage tank installed in the basement of a high-rise building, and is connected to the bottom of chute S. Garbage storage tank T
The downstream side of is connected via the on-off valve v1 to the upstream side of the road tank 1, via the underground transport pipe BP. v3 is an on-off valve for the air introduction pipe IP to the waste storage tank T.

1 is a chassis of a garbage suction vehicle, and Nyazo 1 is equipped with a garbage storage tank 2. The garbage storage tank 2 is opened at the rear as a garbage discharge port 2a, and the garbage discharge port 2a is opened and closed by an opening/closing door 3 whose two parts are horizontally supported 3a.

4 is a telescopic actuator for opening and closing the opening/closing door 3. The lower rear end of the garbage storage tank 2 is horizontally supported 2b by the shirt 1, and can be tilted rearward by a telescopic actuator 5. 6 is a hook for securing the opening/closing door 3 to the garbage storage tank 2, and the details are not shown in the figure.
It is provided at the lower part of the rear end of the garbage storage tank 2.

VA is a suction device mounted on the chassis 1 between the driver's cab 1a and the garbage storage tank 2 of the garbage suction vehicle. The suction device VA includes a water scrubber, a roots blower, and a silencer, which are not shown in the figure, but are connected in this order from the upstream side. Note that the lower portion between the air suction ends of the water scrubber is opened rearward. When the garbage storage tank 2 is not tilted, this rear-facing lower air suction end opening 8 is automatically connected to the air discharge end opening 8 provided in the front upper part of the garbage storage tank 2. The device is configured to be in a disconnected state when it is tilted. 3 VP is an embodiment of this invention, this is a suction pipe,
It is connected to the garbage storage tank 2. That is, the first tube 11, which is the proximal tube, is vertically supported 11a on the upper surface of the front end center of the waste storage tank 2 as a turning tube. The first tube 11 is forced to turn by a drive device 12 that includes two telescopic actuators, a chain, and a chain sprocket.

A second tube 1 is connected to the tip of the first tube 11 via a first flexible tube 13.
4 is connected as an undulating pipe. That is, a proximal arm 15 is provided protruding from the first tube 11 toward the second tube 14, and a distal end of the proximal arm 15 is loosely fitted to the outer circumference of the second tube 14 with a gap. The supporting metal fitting 16 of the second pipe 14
68.

Note that the axis 16a is perpendicular to the axial directions of the first tube 11 and the second tube 14, and is located approximately in the vicinity of the center of the first flexible tube 13. A telescopic actuator 17 (a second
The second tube 14 is forcibly raised and lowered by the tube 14 driving device. A third tube 18 is inserted as an intermediate tube into the tip of the second tube 14, and is forcibly moved in and out by a telescopic actuator 19.

In other words, the third pipe 18 has a structure that allows it to freely move in and out of the first pipe 11 in a substantially horizontal direction. Note that the third tube 18 is a curved tube, and its tip opening is directed downward. Also, the third pipe 1
The protruding end position and the recessed end position of 8 are the sensor LSI, L8
2. A fourth pipe 21 is connected to the tip of the third pipe 18 as a tip pipe and suspended via the second flexible pipe 20. A support frame 22 is erected to support the middle part of the second pipe 14 when the second pipe 14 is laid down, and to prevent the suction pipe P from swinging in the left-right direction.

In addition, the lower part of the rear end of the garbage storage tank 2 (in the embodiment, the opening/closing door 3
A support member 23 of the fourth pipe 21 is provided at the lower part) to protrude rearward. That is, a truncated cone-shaped convex portion 23B inclined rearward is formed on the upper surface of the support member 23, and the storage position of the suction pipe VP is determined by inserting the fourth pipe 21 into this convex portion 23B.

Further, on the side of the fourth pipe 21 facing the waste storage tank 2, a wheel 24 is rotatably horizontally supported 24a. This wheel 24 is connected to a guide surface 3 formed on the wall surface of the garbage storage tank 2 above the support member 23 (in the embodiment, the rear wall surface of the opening/closing door 3).
b. Can be transferred freely. Further, guide plates 25 are provided in the upper and lower sides of the support member 23 to restrain the axial displacement of the wheels 24 in the vertical direction.

In the suction working position of the suction pipe (P), the fourth pipe 21 is supported by three claws 26 rotatably supported on a shaft 28B in the tangential direction at equal intervals on the circumference of the discharge pipe H. It can be connected and secured to the discharge pipe H. Each winter melon 26 is forcibly rotated by a telescopic actuator 27.

A cam plate 31 is provided integrally with the first tube 11 and coaxially with the shaft 11a. The cam plate 3.1 has three convex portions 31a, 31C, and 131e on the outer periphery as shown in FIG. 4(A). 3
1b is a concave portion between convex portions 31a and 310, and 3 j
d is a recess between the protrusions 310 and 316. 32.
33 is a sensor (a sensor for detecting the turning position of the suction pipe VP) disposed in the waste storage tank 2 and close to the outer periphery of the cam plate 31, and is a magnetic sensor in the embodiment.

The sensors 32 and 33 are configured to face the convex portions 31 &, 31e, respectively, at the rotation center position (storage position) of the suction pipe VP, and output a signal of "1". Note that the recesses 31b and 31d are the suction pipe VP in this embodiment.
This corresponds to the specific turning area (dangerous area) DL and DIt. In other words, the specific turning areas DL and DR of this embodiment range from the approximate turning center position of the suction pipe VP to the garbage storage tank 2 as shown in FIG.
The range is set to an appropriate arbitrary position across the rear end corner of the . Beyond these specific turning areas DL and DR are suction working areas WL and WR.

RB is a remote control box provided on the suction wheel, and is provided with various operation switches 8W+, SW2.8Wa, and SW4. The switch 8Wl is a save switch for automatically operating the suction pipe VP from the storage position to a save position beyond the specific turning areas DL and DH, that is, to an appropriate arbitrary position within the suction work areas WL and WR. Switch SW2 is the suction work area WL.

This is a switch that causes the WR to automatically perform a series of operations in which the suction pipe ■P is automatically activated and evacuated to the storage position, and then the garbage sucked into the garbage storage tank 2 is discharged. SW4 is a switch group for manually operating the suction pipe ■P.

CB is a control device including a central processing unit CPU and memory, and the control device CB is connected to a remote control box IL B, sensors LS+, LS2 .
32, 33, etc. are connected.

Note that the memory of this control device CB includes an operation switch S.
When W t -S W a is turned on, the suction pipe ■P
The specific turning areas 1)L and 1)It include a turning restriction means SP that restricts the turning movement unless the third pipe 18 is in the protruding position (the sensor LS is in the ON position).

(1) The following garbage is dumped into the chute S, and the garbage is stored in the tank T.
The operation when sucking the accumulated garbage into the garbage storage tank 2 will be explained.

First, the operator stops the suction wheel, which is in the solid line state in Figure 1 (the suction pipe VP is in the stored position), at a predetermined position near the discharge pipe [() as shown in Figure 8. is placed, and its lid is secured to the discharge pipe [■] by a claw 26.

Then, operate the switch SW+ to the left or right.

If the suction pipe is operated to the left, the suction pipe VP will be automatically retracted to the left retracted position, and if operated to the right, the suction pipe VP will be retracted to the right retracted position.

First, a command to raise the second tube 14 is output, and when the upper end position is reached (determined by a limit switch (not shown)), a command to project the third tube 18 is output.

When the third pipe 18 reaches the protruding end position (as shown by the two-dot chain line in Fig. 1), the sensor LS+ is turned on and the process moves to the next step.
reactor.

If the switch SW
If the vehicle turns beyond this angle to the above-mentioned retreat position, the sensor 32 outputs a constant angle rotation detection signal and the rotation is stopped. Also, if the switch SW+ is operated to the right, the first pipe 11
When the right turn command is output and the vehicle turns beyond the specific turning area DR to the above-mentioned shelter position, the sensor 33 outputs a constant angle turning detection signal and the turning is stopped.

In addition, in the evacuation operation of FIG. 9(a), the first pipe 11
The process of raising the second pipe 14 to the rising end position and outputting the protrusion command to the third pipe 18 until the sensor LSI turns ON before outputting the turning command to the specific turning region of the suction pipe VP 1) At r and D+t, this corresponds to the turning restriction means SP that restricts the turning of the third pipe 18 unless it is in the protruding position.

After that, the operator presses the claw 26 that secures the lid of the discharge pipe H.
, release the binding, and then switch group SW.
4, the first pipe 11 is rotated, the second pipe 14 is raised and lowered, and the third pipe 18 is moved in and out, thereby positioning the fourth pipe 21 on the upper surface of the lid of the discharge pipe H. Let me.

Then, the lid is suctioned onto the fourth tube 21 by the suction device VA, and the lid is replaced at a predetermined position.

That is, the discharge pipe f(is opened).

Then switch again $SW 4? : Tonking the fourth pipe 21 to the opened discharge pipe H by manual operation. Furthermore, as shown in FIG. 6, the claw 26 is closed to secure the fourth pipe 21 to the discharge pipe H.

Then, the on-off valves (2) and (v3) are closed, and the on-off valve (Vt) is opened.

Furthermore, the suction device VA is operated to substantially evacuate the waste storage tank T, transport pipe BP, suction pipe VP, and waste storage tank 2. After that, if the on-off valve v3 of the air introduction pipe IP is opened, the garbage in the garbage storage tank 1' will be sucked into the garbage storage tank 2. If it is not possible to suction all the dust in one suction, the above-mentioned operation may be repeated.

(2) Next, we will explain the case where the suction pipe VP is returned (stored) to the original solid line position in Figure 1 after the dust suction work is completed. First, the operator manually operates the switch group SW4 The lid of H is adsorbed by the fourth pipe 21, and the discharge pipe [I is closed with the lid. Then, close the claw 26 and secure the lid to the discharge pipe (2).

Thereafter, when the switch SW2 is operated, the operation as shown in FIG. 9(b) is executed to automatically store the suction pipe VP to the solid line position in FIG. 1.

First, it is determined whether or not the opening/closing door 3 is in the closed position (determined by a limit switch (not shown)), and if it is not in the closed position, a closing command is output. Further, it is determined whether or not the garbage storage tank 2 is at the lowest position (determined by a limit switch (not shown)), and if it is not at the lowest position, a lowering command is output.

Then, if the opening/closing door 3 closes the discharge port 2a and the garbage storage tank 2 is at the lowest position, the opening/closing door 3 should be secured by the hook 6 (a command is output. If it is tied (determined by a limit switch not shown), a command to raise the second pipe 14 is output, and if it reaches the rising end position, a command to project the third pipe 18 is output until the sensor L81 turns ON. .

When the third pipe 18 reaches the protruding end position, the sensor 32
．． From the output signals of both 330 and 330, whether the suction pipe VP is currently in the left suction work area WL or the right suction work area W
Determine whether it exists in R.

When the suction pipe VP exists in the left suction work area WL, until the first pipe 11 reaches the rotation center position (both sensors 3
A right turn command is output until the position where both 2 and 33 output a signal of "1"). Further, when the suction pipe VP exists in the right suction work area WR, a left turning command is output until the first pipe 11 reaches the turning center position.

When the suction pipe ■P reaches the rotation center position, the sensor L
82 is turned on (until the third tube 18 reaches the retracted end position), a retraction command for the third tube is output. and the third pipe 1
8 reaches the retracted end position, a descending command is output to the second tube 14 for a certain period of time.

At this time, the fourth tube 21 comes into contact with the opening/closing door 3 due to the deflection of the second flexible tube 20, but since the wheels 24 are guided by the guide plate 25 while rolling on the guide surface 3b, the fourth tube 21 and The suction pipe VP is stored without damaging the opening/closing door 3 (the fourth pipe 21 is inserted into the convex portion 21k, and the fourth pipe 21 presses the support member 23 slightly downward).

In the retracting operation shown in FIG.
to the rising end position, and sensor LS IfJ''
- The process of outputting a protrusion command to the third shell 18 until it becomes ON is a turning restriction means that restricts the turning of the third pipe 18 in the specific turning range DL and DR of the suction pipe vP unless the third pipe 18 is in the protruding position. It corresponds to SP.

(3) Next, the case of discharging the garbage sucked into the garbage storage tank 2 will be explained.

The operator operates switch 8Wa. Then, the suction pipe VP is first moved to the left in the flowchart of FIG. 9(a). That is, the suction pipe VP is retracted to a position where it does not interfere with the opening/closing operation of the opening/closing door 3.

Thereafter, a command is output to release the locking of the door 3 by the hook 6, and when the locking is released, the door 3 should be fully opened (an opening command is output).

Furthermore, a command is output to tilt the garbage storage tank 2, and eventually the garbage suction vehicle is in the state shown in FIG. 7, and the garbage in the garbage storage tank 2 can be discharged.

The above description is an example, and the shaft configuration of the suction pipe VP may be such that the fourth pipe 21 can move up and down instead of moving up and down around the shaft 16B.
The intermediate pipe (in the embodiment, the third pipe 1
8) should be able to appear and appear at will. Further, the suction wheel may be a suction wheel for, for example, powder other than garbage. It goes without saying that the technical scope of the present invention also includes the replacement of each component with equivalents.

(Effects of the Invention) As described above, the present invention provides the sensor 32.
33, L8t, signal from L82 and operation switch 8
Based on the signals from W1 to W8Wa, the rotation of the suction pipe VP is restricted in the specific rotation areas DL and DR unless the intermediate pipe 18 is in the protruding position, that is, the rotation restriction means SP is controlled by the control device. Since it is included in OB, when turning the suction pipe VP from the storage position to the suction work area WL, WR, or from the suction bow work area WL, Wl'L to the storage position,
The tip tube 21 and the like will not collide with the storage tank 2 (particularly its corner portion).

[Brief explanation of the drawing]

Each of the figures shows an embodiment of the present invention, in which Fig. 1 is an overall side view of the suction wheel, Fig. 2 is a partially omitted plan view of Fig. 1, Fig. 3 is a block diagram of the main parts, and Fig. 4 is a block diagram of the main parts. Figures (A) and (B) are explanatory plan views and output signal diagrams of the suction pipe turning position detection unit, Figure 5 is a cross-sectional view of the vicinity of the tip pipe, Figures 6 to 8 are action explanatory diagrams, FIGS. 9(a), (b), and (c) are flowcharts. 2... Accommodation tank, 3... Opening/closing door, 6... Hook, 11... Proximal tube (first tube), 11B... Vertical axis,
18... Middle tube (third tube), 21... Tip tube (fourth tube)
pipe), 23... support member, 31... cam plate, 32.
33... Rotation position detection sensor of proximal tube 11, LS+.
...Protruding end position detection sensor of intermediate pipe 18, LS2...
Recessed end position detection sensor of intermediate tube 18, RB...remote control box, 8 Wl-S W3...operation switch, CB...control device, VA...suction device, VP.
・Suction pipe, ■...Discharge pipe.

Claims (1)

[Claims] a storage tank; a proximal tube is rotatably vertically supported on the upper surface of the storage tank; an intermediate tube is connected to the intermediate portion of the proximal tube;
Furthermore, at the tip, a suction pipe is connected and suspended from above the storage tank along substantially the side wall, and a sensor for detecting the turning position of this suction pipe and the protruding/retracting position of the intermediate pipe, and a control device that receives signals from a sensor and an operation switch and drives the suction pipe; A suction vehicle comprising a turning control means for restraining the rotation of the vehicle.