JPH0533528Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention relates to a concrete finisher exclusively for sloped surfaces, which casts concrete on the slope of a dam or other sloped surface to apply concrete facing to the slope. It is.

(Conventional technology) Conventionally, when facing the slope of a dam or other sloped surface by pouring concrete, the process varies depending on the size of the construction area and the conditions of the construction site.
The construction methods are roughly classified as follows.

(1) If the construction area is small, divide the slope on which concrete facing will be applied into construction sections with fixed intervals in the slope direction, construct formwork along the divided construction sections, and install dump trucks within this formwork. Alternatively, concrete for pouring is brought in from an agitator truck, spread using input, compacted using a vibrator, etc., and then finished using a flow road.

(2) When the construction area is relatively large, (a) Mechanical construction method in which rails are assembled on the formwork and a concrete finisher equipped with a spreader and screed is run using the rails for pouring.

(b) The so-called slip form construction method, which uses movable formwork instead of fixed formwork.

(Problem to be solved by the invention) By the way, the first construction method, which relies mainly on human labor, is suitable for concrete facings where the construction area is relatively small, as described above, but the construction efficiency is poor.

Construction using a concrete finisher equipped with a spreader and a screed in the second step is a so-called mechanical construction method, so the construction efficiency is high, but the concrete finisher itself was originally developed as a construction machine for flat surfaces. Therefore, when this is used as a concrete finisher for slopes, there are problems with the flatness of the finished surface.

Construction using the slip form construction method shown in second (B) has high workability and efficiency, but requires large-scale equipment. Therefore, it is effective when the length of the slope to which concrete facing is applied is 30 to 40 meters or more, such as the slope of a so-called large dam.

However, it is not suitable for relatively small slope concrete facings.
For the reasons mentioned above, when the scale of the slope to which concrete facing is applied is about 20 to 30 meters, manual construction has problems in terms of workability, and the Sarito slip form method has problems in terms of construction cost. Since there is no concrete finisher specifically designed for slopes of this size, this has become a technical issue in the field of concrete facing construction.
This invention was devised for the purpose of solving such technical problems.

(Means for solving the problem) As a means for achieving the above-mentioned object, first, in this invention, the slope on which concrete facing is to be applied is divided in advance into construction sections parallel to each other at regular intervals in the slope direction. . In other words, facing concrete was constructed for each construction section. Then, formwork is set for each construction section,
Concrete as a facing material is dropped into the formwork, and the dropped concrete is combined with a trolley, a leveling and compaction unit consisting of a screw spreader and a screed, a skin plate, a counterweight, and a hoisting device. The construction is carried out mechanically by leveling, compacting, and facing using the constructed concrete finisher for slopes.

Therefore, first, rails were laid on formworks installed parallel to each other in the direction of the gradient in the construction section. Next, the truck constituting the concrete finisher for slopes was constructed as a four-wheeled truck that could run in the direction of the slope using left and right rails laid on the formwork as guides.

Next, the leveling and compaction unit had support arms extending forward from both sides of the truck, and was attached to the support arms so as to be orthogonal to the traveling direction of the truck. Moreover, the lower surface level of the screw spreader and screed in the installed unit can be adjusted up and down.

Furthermore, the skin plate has a width of the trolley;
Specifically, it was constructed with a plate material having a width almost equal to the width of the construction section, and was attached to the lower surface of the cart so that the level could be adjusted freely, similar to the leveling and compaction unit.

The counterweight was then configured to be weight adjustable and placed on the skin plate.

Finally, the hoisting device was attached to the truck. The tip of the winding wire of the winding device is linked to a fixing jig set at the top of the construction section.

The leveling and compaction unit consisting of the screed spreader and the screed was configured to have a span slightly longer than one-half of the width in the construction section. Two sets of these units were attached in a cantilevered manner to left and right support arms extending forward from both sides of the truck. In other words, they were attached to the front of the truck alternately from the left and right.

(Function) Since the concrete finisher for slopes according to this invention is constructed as described above, when performing facing construction, the concrete finisher for slopes is first set on the lower side of the slope to be constructed. That is, the cart is placed on the left and right rails laid on the formwork of the construction section, and set on the lower side of the slope.
Next, the tip of the winding wire of the winding device attached to the truck is linked to a fixing jig installed at the top of the construction section. The levels of the leveling compaction unit and the skin plate are then adjusted to the desired thickness of concrete facing.

When the above preparation work is completed, concrete as a facing material is dropped into the formwork using a dump truck or the like. Then, the winding device attached to the truck constituting the finisher is driven to take in the winding wire. Then, the cart moves up the slope of the construction section relatively toward the top using the rail as a guide. That is, the concrete finisher for the slope itself rises along the slope of the construction section. As a result, the concrete dropped into the formwork is leveled and compacted within the formwork by the leveling and compaction unit. The surface is then finished by a skin plate with a counterweight. In other words, a concrete facing is mechanically constructed on the slope.

(Example) Further, this invention will be specifically explained based on an example shown in the drawings.

FIG. 1 is a side view showing a concrete finisher for slopes set on the lower side of a slope.
FIG. 2 is a side view showing the same horizontal state. First, as shown in Figs. 1 and 2, the bogie 1 has a bogie frame made of light-weight section steel angles and rectangular pieces, and running wheels 2 are attached to the front, rear, left, and right sides of the bogie frame. It was constructed as a four-wheeled trolley 1. As shown in the plan view of Fig. 3, the running wheels 2 and 2 of the bogie 1 ride on the left and right rails 4 and 4 attached to the formworks 3 and 3 set in the construction section and reach the top of the slope. The width of the vehicle is restricted so that the vehicle can travel in the right direction (in FIGS. 1 and 2).

Next, the leveling and compaction unit 7 consisting of the screed spreader 5 and the screed 6 extends support arms 8, 8 forward from both sides of the truck 1, as shown in FIG. 8 supported it. In FIG. 1, support arms 8, 8 are extended from the right side of the truck 1, and the leveling and compaction unit 7 is attached to these arms.

In this embodiment, the leveling and compacting unit 7 has two support arms 8, 8 extending forward from the truck 1, as shown in the side view of FIG.
The structure is such that a set of leveling and compaction units 7 and 7 are attached. FIG. 2 is an enlarged side view of FIG. 1, showing the two sets of leveling and compaction units 7 and 7.
This shows the state of the situation. Specifically, as shown in FIG. 2, a set of leveling and compaction units 7 consisting of a screed spreader 5 and a screed 6 are mounted on support arms 8, 8 extending forward from the cart 1, respectively, from the right side. was attached, and then the leveling and compaction unit 7 having the same configuration as described above was attached to the left side thereof.

FIG. 3 is a plan view of FIG. 2, showing how the two sets of leveling and compaction units 7, 7 are installed and arranged.

As mentioned above, in this embodiment, the leveling and compaction unit 7 consisting of the screed spreader 5 and the screed 6 is equipped with two sets, so the unit unit is as shown in FIG. As shown in the plan view, the leveling and compaction unit 7 was constructed with a span slightly longer than one half of the width H of the construction section. Each of the units 7 and 7 was attached in a cantilevered manner to left and right support arms 8, 8 extending forward from both sides of the truck 1, respectively. In other words, the structure is such that concrete can be leveled and compacted by dividing each half of the width H of the construction section. In addition, the reference numeral 9 shown in FIGS. 1 to 4
and 9 are motors for rotating the screw spreaders 5 and 5 which constitute the leveling and compacting units 7, 7, respectively, and are configured to transmit rotational force to each of them via a reduction mechanism (not shown). did.

Further, the screed 6, which is paired with the screed spreader 5 and compacts the leveled concrete, is constructed of square pipe material as shown in FIGS. 1 and 2. In other words, it is configured to be placed after the screw spreader 5.

And, both screeds 6, 6 are constructed as vibration type like conventional general screeds. Although the construction of the vibration means is not shown in the drawing, in this embodiment, a rotary shaft is provided which is rotated in conjunction with the driving motors 9, 9 of the screed spreaders 5, 5, and an eccentric cam is provided on this rotary shaft, and the rotation of this eccentric cam causes the
The screed 6 made of the square pipe material is configured to be subjected to mechanical vibration. Of course, a high-frequency pipe radar may be used to make the device configuration compact.

Further, as a means for vertically adjusting the lower surface level of the screuse spreaders 5, 5 and the screeds 6, 6 in the leveling and compaction units 7, 7,
As shown in FIG. 4, height adjustment mechanisms 10, 10 are provided on both the left and right sides of the screw spreader 5, and by operating the adjustment screws 10a, 10a in the adjustment mechanisms 10, 10, the height can be adjusted. It is configured so that the upper and lower levels can be adjusted. Note that reference numerals 11 and 11 shown in FIG. 4 are joints that connect the height adjustment mechanisms 10, 10 and the screw spreaders 5, 5 and screws 6, 6.

Next, a skin plate 13 for facing the concrete that has been leveled and compacted by the screw spreaders 5, 5 and the screeds 6, 6, that is, for final surface finishing, is shown in FIGS. 1 and 2. As shown, it was attached to the lower surface of the truck 1 behind the leveling and compaction unit 7.

Its shape, as shown in Fig. 3, was made up of plates with a width approximately equal to the width H of the construction section.
That is, it is composed of a plate material whose plane is approximately rectangular, and the front edge 13a is curved upward as shown in FIGS. 1 and 2, and the concrete finisher for slopes itself is When the skin plate 13 is moved forward in the direction of the arrow, the front edge 13a of the skin plate 13 is configured to perform a facing action without biting into the facing concrete. Furthermore, the counterweight 14 has a second
As shown in the figure, it was installed on top of the skin plate 13.

In the embodiment, the counterweight 14 is constructed with a tank filled with water, and the weight can be adjusted by adjusting the amount of water in the tank. In other words, by loading the skin plate with weight, it is possible to enhance the leveling effect of the facing concrete. Furthermore, as shown in the embodiments of FIGS. 1 and 2, when the entire device is set along a slope, there is a risk that the water in the tank will sway, so the free liquid in the tank is The tank was constructed with triangular side surfaces so that the number of surfaces was as small as possible. FIG. 2 shows its side profile.

As a means for adjusting the vertical level of the skin plate 13 itself, as shown in FIG. 2 and FIG.
An adjustment tube 15 of the insertion type is placed over the support leg 2a supporting the supporting leg 2a, and an adjustment screw 16 is screwed together between the adjustment tube 15 and the support leg 2a.
Adjustment cylinder 1 is adjusted by operating head 16a of
It is configured so that the level can be adjusted by moving 5 up and down. That is, the level of the skin plate 13 can be adjusted by turning the head 16a of the adjusting screw 16 to move the adjusting barrel 15 up and down.

Next, hoisting is carried out as a means for raising and lowering the cart 1 to which the leveling and compacting units 7, 7, the skin plate 13 having a surface finishing function, and the counterweight 14 are attached along the slope of the construction section. The device 17 was attached to the trolley 1. That is, as shown in FIGS. 1 and 2, it was installed above the leveling and compaction units 7, 7. In addition, as the winding device 17, in the embodiment, an electric winding device 17 having a winding wire 17a, commonly called a chill-all jack, was used. The tip of the winding wire 17a of this winding device 17 is linked to a fixing jig 19 anchored to the top end 18 of the slope, as shown in FIG. That is, when this winding device 17 is driven to wind up the winding wire 17a, the trolley 1 moves onto the rail 4 on the formwork 3.
The slope of the construction section was constructed so as to rise relatively along the slope. In this embodiment, as described above, as a means for raising and lowering the cart 1, that is, the concrete finisher for slopes itself, the tip of the winding wire 17a of the winding device 17 is fixed to the fixing jig 19 provided on the slope top end 18 side. However, instead of the fixing jig 19, it is also possible to use heavy machinery used in dam construction work, such as a compaction roller that runs on the top end 18. That is, the tip of the wire 17a of the hoisting device 17 may be linked to a temporarily stopped heavy machine and used as a fixing jig 19. Note that 2 shown in Figures 1 to 3
0 is a workbench attached to the rear of the trolley 1, on which a finisher can sit and perform final rework work.

Since this invention is constructed as explained through the above embodiments, when constructing facing concrete, first place the concrete finisher itself on the underside of the slope, as explained earlier. At the same time, adjust the level of the screw spreader and screed, the level of the skin plate, and the weight of the counterweight installed on the skin plate, depending on the thickness of the concrete facing to be cast. .

Next, concrete for pouring is carried forward by a dump truck or an agitator truck, and is delivered into the formwork divided into construction sections. The hoisting device is then used to raise the truck, ie, the concrete finisher, along the slope. Then, the supplied concrete is first leveled and compacted by a leveling and compacting unit consisting of a screw spreader and a screed. The surface finish is then applied by a subsequent skin plate, which acts as a finisher for the facing concrete.

(Effects of the invention) The concrete finisher for slopes according to this invention uses so-called mechanical construction, so it is extremely efficient compared to conventional manual construction methods. Moreover, since the structure of the finisher is relatively simple, the equipment is simpler than the slip form construction method. Therefore, it is extremely suitable as a finisher for constructing concrete facings on medium-sized slopes.

Since it functions as a concrete finisher especially for slopes, it has the following construction effects compared to conventional finishes.

(1) Since the screw spreader and screed for leveling and compacting the concrete for pouring are installed in parallel, the leveling and compaction of the concrete is performed extremely uniformly. Moreover, as shown in the example, if the structure is configured so that half of the construction width is divided between the front and rear sections, then two sets of leveling and compaction units can be arranged. With this configuration, the concrete to be placed will be spread and compacted from the center of the cart to the left and right, and from the left and right to the center. The result is a very uniform concrete facing application.

This is particularly effective when the construction surface is a slope. This is because if the construction surface is sloped,
The supplied concrete had a tendency to slide down along the slope, and it was distributed to the left and right.
This is because the set of laying and compacting units can evenly lay and compact the floor from side to side.

In addition, since the span of the screw spreader is set to approximately half the width of the construction section, the torque applied to the rotating shaft of the screw spreader is compared to when the span is equal to the full length of the bogie width. , it functions as a natural and structurally balanced concrete finisher. As a result, the cart width can be made relatively wide. In other words, it is possible to widen the width of concrete that is placed in one step. Therefore, it is also possible to perform concrete facing on long slopes such as dams.

(2) Since the skin plate is equipped with a counterweight that can be freely adjusted, the amount of load on the poured concrete surface can be controlled and set as appropriate, resulting in a highly accurate surface finish and no rippling. In other words, a highly accurate surface finish can be obtained.

Furthermore, since the counterweight is constructed with a tank filled with water, when the counterweight is not used as a concrete finisher, the weight of the whole can be reduced by removing the water.

[Brief explanation of the drawing]

The drawings show an embodiment of the concrete finisher for slopes according to the present invention; FIG. 1 is a side view showing the concrete finisher set on a slope, FIG. 2 is a side view showing the concrete finisher in a horizontal state,
3 is a plan view of FIG. 2, and FIG. 4 is a front view taken along the line X--X in FIG. 3. 1... Truck frame, 2... Traveling wheels, 3...
Formwork, 4...Rail, 5...Screed spreader, 6...Screed, 7...Leveling and compaction unit, 8...Arm, 9...Drive motor, 10
...Height adjustment mechanism of leveling and compaction unit, 13
... skin weight, 14 ... counterweight, 15 ... adjustment tube, 16 ... skin plate adjustment screw, 17 ... hoisting device, 17a ... wire, 18 ... slope top, 19 ... anchor jig ,
20...workbench, 21...generator.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The slope on which concrete facing is to be applied is divided in advance into construction sections parallel to each other at regular intervals in the slope direction, and formwork is set in the divided sections. Drop concrete into the frame,
A concrete finisher for slopes that applies concrete facing by leveling and compacting dropped concrete, wherein rails are laid on the formwork in each of the execution sections, and the concrete finisher for slopes includes a cart, It comprises a leveling and compacting unit consisting of a screed spreader and a screed, a finishing unit consisting of a skin plate and a cowtow weight, and a winding device having a winding wire, The platform is constructed as a four-wheeled truck that travels on the slope using the left and right rails laid on the formwork as guides, and the leveling and compaction unit has a support arm that extends forward from the truck, The skin plate is installed so as to be perpendicular to the direction, and the lower surface level of the screuse spreader and the screed in the leveling and compaction unit can be adjusted up and down, and the skin plate has a width approximately equal to the width of the enforcement section. It is composed of plate materials with
The winding device has the winding wire attached to the lower surface of the truck in a level-adjustable manner, the counterweight is installed on the skin plate, and the winding device has the winding wire.
A concrete finisher for a slope, which is attached to the trolley and configured such that the tip of the winding wire is linked to a fixing jig installed at the top of the execution section. (2) The leveling and compaction unit consisting of the screed spreader and the screed is constructed into a unit with a span slightly longer than half the width of the construction section, and two sets of this unit are connected to the above-mentioned trolley. 2. The concrete finisher for a slope according to claim 1, wherein the concrete finisher is attached alternately to left and right support arms extending forward from both sides of the concrete finisher.