JP3215944B2 - Shear collection method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for recovering shear, such as latence, remaining on a concrete joint surface of a concrete structure such as a dam from the joint surface.

[0002]

2. Description of the Related Art Laittance is a phenomenon in which fine particles such as cement and sand, which are formed by the separation of concrete material, form a breathing phenomenon. It is a fine substance that exudes and precipitates. However, this latence has low strength, adhesion, and water tightness even when it hardens, and forms a weak layer. Failure to do so will result in significant structural failure. For this reason, latencies are removed by injecting pressurized water to the joint surface of the concrete, or by spraying the pressurized water and rubbing the joint surface with a brush or the like.

[0003] The latence peeled off from the concrete joint surface is mixed with the water used for the peeling, and remains in a polluted state on the concrete joint surface. For this reason, conventionally, a vacuum truck was moved to the vicinity of the work site from which the shear was to be removed, and the vacuum hose was operated directly by an operator to contaminate the shear remaining on the concrete transfer surface. We absorb with water.

[0004]

However, the conventional waste collecting operation has the following disadvantages. Workers are sucking shear while operating the vacuum hose, which is heavy labor.In addition, the work efficiency is extremely low due to sucking shear from the narrow opening at the end of the vacuum hose. Time becomes redundant.

[0005] In addition, since the vacuum pump for shear suction is driven by the driving force of the engine mounted on the vacuum car, the vacuum car is run during the suction work. Can not do.
Therefore, the work must be interrupted every time the suction suction operation within the range where the vacuum hose reaches around the stopped vacuum car is completed, and the vacuum car must be moved one by one. It is complicated.

[0006] When the shear is sucked by the vacuum hose, the suction efficiency is low because only the suction force of the air by the vacuum hose is used. In addition, the receiver tank is quickly filled with the contaminated water sucked together with the shear, and in this case, the suction operation must be interrupted, and the contaminated water and the like in the receiver tank must be frequently transported to a predetermined disposal location and discarded. This causes a delay in work.

The present invention is to provide a method and an apparatus for recovering shear from a concrete joint surface, which can efficiently and mechanically perform the recovery of shear from a concrete joint surface in a short time without relying on manual work. It is assumed that.

[0008]

According to the present invention, there is provided a waste collecting apparatus comprising: a jet nozzle 26 for jetting a liquid or a gas onto a concrete joint surface S; A suction inlet 27 for sucking the air inside the suction body 19 is formed so as to face each other, and the ejection nozzle 2 is provided at the lower end of the side plate.
Except for the lower portions of the outer plates 6 and 26, the skirts 23 to 25 that cover the gap with the concrete joint surface S are vertically provided, so that the outer air intake ports 19b 'are formed in the lower portions of the jet nozzles 26 and 26 of the side plates. Is formed.

In the method for recovering waste according to the present invention, the above-described waste recovery apparatus is used to discharge the slurry remaining on the concrete joining surface S from the jet nozzles 26 provided above the outside air inlet 19b '. The liquid or the gas is ejected so as to flow toward the slip suction port 27, and at the same time, the internal air of the suction vessel 19 is sucked from the slip suction port 27, so that the outside air is sucked from the outside air suction port 19b '. As the liquid is sucked into the container 19, the slip
The content is to inhale from.

[0010]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the waste collection apparatus of the present invention is mounted and mounted on a vacuum truck 2 having a receiver tank 1, and a waste collection unit A, a generator B, and a receiver tank 1 mounted on the front side thereof. A submersible pump C disposed therein and a low-speed traveling unit D mounted on the rear side of the vacuum vehicle 2. In addition, the waste collection unit A, the generator B, the submersible pump C, and the low-speed traveling unit D are driven by using the output of an engine mounted on the vacuum vehicle 2, and an external power supply or the like is used. The configuration is not required.

The configuration of the waste collection unit A is as follows. Numeral 3 is a front rectangular support frame in which connecting members 5, 6 are laid across the upper and lower ends of a pair of upright frame members 4, 4, respectively. It is fixed to a front bumper 8 disposed on the front side of the vehicle body via attachment members 7, 7 (FIGS. 2 to 4).

The front faces 4a of the upright frame members 4, 4 of the support frame 3,
4a, a pair of guide rails 9, 9 is fixedly attached thereto.
9 so as to be able to move up and down in the vertical direction.

The elevating support base 10 is formed in a flat rectangular shape on the lower surface of the side trapezoidal mounting frames 12, 12 having the sliding brackets 11, 11 slidably fitted on the guide rails 9, 9 fixed to the rear surface. The horizontal support frame 13 is fixed. Further, a connecting member 12b is suspended between the upper ends of the rear surfaces of the upright frame members 12a of the mounting frame 12, and the guide rails 9, 9 of the elevating support base 10 are mounted on mounting pieces 14, 14 fixed thereto. Hydraulic cylinders 15 arranged along the inside of the
Fifteen drive rods 15a, 15a are attached. That is, the elevating support base 10 moves up and down along the guide rails 9 and 9 according to the expansion and contraction driving of the drive rods 15a and 15a (FIG. 2).

On the lower surface of the horizontal support frame 13, link mechanisms 16 are provided at four corners thereof, and the body support members 17 are provided for each of the two link mechanisms 16, 16 provided at both ends. I support. Each body support member 17 is provided with casters 18, 18 at the front end and the rear end, respectively, and the two body support members 17, 17 allow the suction body 19 to be moved. Supports both ends.

The frame members 13a, 13a provided at both ends of the horizontal support frame 13 have hydraulic support cylinders 20, 2 having the body support members 17, 17 attached to the drive rods 20a, 20a.
0 are each provided. That is, the hydraulic cylinder 2
In accordance with the expansion and contraction driving of the drive rods 20a, 20a, a take-up roller 21 (described later) provided on the suction body 19 is brought into contact with the concrete joining surface S, and The intake roller 21 is separated from the concrete joining surface S, and the suction container 19 is moved up and down between a standby position (b) where the suction container 19 does not hinder the traveling of the vacuum vehicle 2. .

The suction vessel 19 is of a substantially rectangular parallelepiped shape having an open lower end face, and the interior thereof is divided into a roller installation chamber 19 'and a shear suction chamber 19 "by a partition plate 19a (see FIG. 1). 5, 6) A bearing (not shown) is formed on each of the side plates 19b and 19c of the suction body 19 that defines the roller disposition chamber 19 ', and a slip is provided between the bearings and the suction chamber 19 ". Roller 2 for taking in
1 is supported rotatably about a shaft 22 so as to slightly protrude below the edge of the opening 19 f of the suction vessel 19.

Therefore, when the intake roller 21 is in contact with the concrete joining surface S, a gap is formed between the edge of the opening 19f of the suction container 19 and the joining surface S. Of the two side plates 19b to 19e, skirts 23 to 25 formed of an elastic material such as rubber are erected at the lower ends of the side plates 19c to 19e except for the side plate 19b so as to cover the gap with the concrete joint surface S. are doing.

In other words, the outside air flows into the suction body 19 when the outside air is sucked into the gap formed between the lower edge of the side plate 19b and the concrete joining surface S, that is, inside the suction body 19. This is performed only through the outside air inlet 19b 'for the intake (FIG. 6).

One of the side plates 19b and 19c of the suction vessel 19 for partitioning the shear suction chamber 19 ".
b, that is, a pair of ejection nozzles 26, 26 for ejecting a liquid such as water in a conical shape at a required pressure at the upper side of the outside air suction port 19b '. That is, the liquid such as water jetted from the jet nozzles 26, 26 is jetted such that a part thereof is at a shallow angle with the concrete joint surface S, that is, substantially parallel to the concrete joint surface S. The shear remaining on the joint surface S is removed by the side plate 19c.
The fluid is caused to flow toward a slip suction port 27 described later, and is also directly injected into the slip suction port 27 (FIG. 7).

The jet nozzles 26, 26 are provided with a water pipe 2
Submersible pump C disposed in the receiver tank 1 via
Are connected so that a liquid such as water stored in the receiver tank 1 is ejected.

Both side plates 19 for partitioning the shear suction chamber 19 "
b, 19c, the other side plate 19c is provided with a substantially circular slip suction port 27 for sucking internal air so that the inside of the shear suction chamber 19 ″ is at a pressure lower than the outside air pressure, that is, a negative pressure state. Has been established.

One end of a suction hose 31 whose other end is connected to the receiver tank 1 is connected to the shear suction port 27 via an elbow pipe 29 and a flexible bellows pipe 30. Accordingly, by driving a vacuum pump (not shown) mounted on the vacuum vehicle 2, the shear on the joint surface S facing the shear suction chamber 19 ″ and the liquid such as water injected from the jet nozzles 26, 26 are discharged. A part is sent out to the receiver tank 1 from the shear suction port 27.

The receiver tank 1, as shown in FIG.
A partition plate 32 separates a rear storage unit 1a in which a liquid such as water sent out from the shear suction port 27 and shear are stored, and a front storage unit 1b in which a submersible pump C connected to a generator B is disposed. Thus, the shear stored in the rear storage section 1a is prevented from flowing into the front storage section 1b. Therefore,
Only the liquid such as water stored in the rear storage section 1a flows into the front storage section 1b.

The take-in roller 21 is adapted to rotate in accordance with the traveling of the vacuum vehicle 2 in contact with the concrete joining surface S. The roller 21a made of a sponge resin having a required width and a roller made of rubber are used. Materials 21b are alternately arranged (FIG. 5).

The low-speed traveling unit D separates the traveling of the vacuum vehicle 2 with the traveling tires 33... When collecting the shearing material remaining on the concrete joining surface S. The vehicle 2 is run, and its configuration is as follows.

The chassis 34 of the vacuum vehicle 2 has a pair of axle stays 35, 35 at positions inside the rear wheels 33, 33.
At the lower ends of the axle stays 35, base ends of the swing arms 36 are pivotally supported in a vertical plane.

A pair of axles 38, 38 having auxiliary tires 37, 37 (one not shown) attached to the outer ends thereof, are rotatably mounted between the distal ends of the swing arms 36, 36. A hydraulic motor 40 is connected to the inner ends of the axles 38, 38 via a transmission box 39.
Therefore, according to the driving of the hydraulic motor 40, the auxiliary tire 3
7, 37 are driven to rotate.

A connecting member 41 is suspended between the intermediate portions of the swing arms 36, 36, and includes a hydraulic cylinder 42, 42 disposed inside a pair of axle stays 35, 35.
Drive rods 42a, 42a are mounted via brackets 43, 43. The auxiliary tires 37, 37 are driven in accordance with the expansion and contraction of the drive rod 42a of the hydraulic cylinder 42.
Is moved up and down between a running position (c) pressed against the concrete joining surface S and a standby position (d) where the auxiliary tires 37 and 37 are separated from the concrete joining surface S.

The process of collecting the shears remaining on the concrete joining surface S is performed as follows. With the suction container 19 of the waste collection unit A and the slow-speed traveling unit D moved to the standby positions (B) and (D), the vacuum truck 2 is moved to a required position on the concrete joint surface S. Moving.

Next, the waste collection unit A is caster 1
8 and the take-up roller 21 are moved down to the shear recovery position (a) where they come into contact with the concrete joining surface S, and the traveling position (where the auxiliary tires 37, 37 of the low-speed traveling unit D are pressed against the concrete joining surface S is pressed. Move down to c).

Engine of vacuum vehicle 2 (not shown)
Is switched to drive the apparatus, the ejection nozzles 26 and 2 of the waste collection unit A are operated.
A liquid such as water is ejected from 6, and a suction operation from the shear suction port 27 is started. Thereby, the shear of the concrete joint surface S facing the opening 19f of the suction vessel 19 is flowed toward the shear suction port 27 by the liquid such as water injected into the joint surface S,
It is sucked through the suction port 27.

The slip and the like sucked from the slip suction port 27 are conveyed and stored in the receiver tank 1 through the vacuum hose 31. Part of the liquid such as water stored in the front storage portion 1b in the receiver tank 1 is sucked by the submersible pump C, and is jetted out of the jet nozzle 26 into the suction vessel 19 through the water pipe 28. You.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention. In the above description, water has been described as an example of the liquid ejected from the ejection nozzle, but a gas such as air may be ejected.

[0034]

According to the present invention, a skirt for covering the gap with the concrete joint surface except for the lower part of the jet nozzle is provided vertically at the lower end of the side plate of the suction vessel. An outside air suction port is formed in the lower part of the side plate discharge nozzle, and liquid or gas is injected from the discharge nozzle so that the shear remaining on the concrete joint surface flows toward the suction inlet. At the same time, by sucking the internal air of the suction body through the slip suction port, as the outside air is sucked into the suction body from the outside air suction port, the slip is sucked through the slip suction port. Therefore, the work of recovering the shear from the concrete joint surface can be performed mechanically efficiently in a short time without depending on the manual work of the worker.

Since the ejection nozzle and the shear suction port are formed on the side plate of the suction body so as to face each other, the efficiency of processing the slip can be improved.

Since the liquid stored in the receiver tank is recirculated to the ejection nozzle, it is possible to prevent the receiver tank from being filled with the liquid.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a vacuum vehicle equipped with a waste collection device of the present invention.

FIG. 2 is a side view of the waste collection unit mounted on the front side of the vacuum vehicle.

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is a plan view of a suction body.

FIG. 6 is a sectional view taken along line II of FIG. 5;

FIG. 7 is a view taken in the direction of the arrow II shown in FIG.

FIG. 8 is a side view of the low-speed traveling unit.

FIG. 9 is a rear view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiver tank 19 Suction body 19b, 19c, 19d, 19e Side plate 19b 'Open air inlet 19f Opening 23-25 Skirt 26 Spray nozzle 27 Shear inlet C Submersible pump D Slow running unit S Concrete joint surface

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Seiji Yoshimura 2nd Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. (72) Inventor Shoji Maki 2nd Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. 72) Inventor Yoshimi Matsuo No.2 Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. (72) Inventor Osamu Oya 865-1, Asakuracho, Kochi-shi, Kochi Pref. Co., Ltd. 6-26024 (JP, A) JP-A-8-326316 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04G 21/00-21/02

Claims (8)

(57) [Claims] 1. A slip collecting apparatus provided with a suction body having an open lower end face for recovering shear staying on a concrete joint surface from the joint surface. On the side plate, a jet nozzle for injecting liquid or gas onto the concrete joint surface, and a slip suction port for suctioning the internal air of the suction body thereof are formed so as to face each other, At the lower end, except for the lower part of the jet nozzle, a skirt that covers the gap with the concrete joint surface is erected, so that the outside air intake port is formed in the lower part of the jet nozzle of the side plate. A scrap collecting device characterized by the above-mentioned. 2. The interior of the suction vessel is divided into a roller disposition chamber and a shear suction chamber, and the roller disposition chamber includes:
2. A device according to claim 1, wherein a take-in roller for taking the shear into the shear suction chamber is rotatably disposed. 3. The device according to claim 2, wherein the ejection nozzle and the shear suction port are arranged in a shear suction chamber. 4. A suction vehicle is mounted on a vacuum car having a receiver tank for storing the suction sucked from a slip suction port of the suction car body, and the vacuum car is provided with a hydraulic motor and driven by the hydraulic motor. 4. A slow-moving unit comprising auxiliary tires provided in the vehicle.
Scrap collection device as described. 5. The device according to claim 4, wherein a submersible pump for circulating the liquid stored in the receiver tank to the ejection nozzle is arranged in the receiver tank. 6. A slip collecting device according to claim 1, 2, 3, 4 or 5, wherein a slip remaining on a concrete joint surface is discharged from a jet nozzle provided above an outside air inlet. At the same time as injecting liquid or gas so as to flow toward the slip suction port, the internal air of the suction body is sucked from the slip suction port, so that outside air is sucked into the suction body from the outside air suction port. A method for collecting a waste, wherein the waste is sucked through a suction inlet. 7. A vacuum vehicle having a suction tank mounted thereon and a receiver tank for storing the slip sucked from a slip suction port of the suction body, is mounted on a concrete joint surface by a low-speed traveling unit mounted thereon. 7. The method according to claim 6, wherein the vehicle is driven at a very low speed. 8. The method according to claim 7, wherein a submersible pump is disposed in the receiver tank, and the submersible pump recirculates the liquid stored in the receiver tank to the jet nozzle.