JPH0531602B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention consistently performs the leveling, compaction, and surface finishing of fresh concrete when constructing roads, new urban transportation tracks, etc. Concerning concrete finishers.

<Conventional technology> As is well known, when constructing roads, etc., fresh concrete supplied on the roadbed is spread by a blade-type spreader installed at the leading edge and ground to a predetermined thickness. A concrete finisher is used in which compaction is performed using a bottom-shaped vibrating plate installed in the center, and surface finishing is performed in a series using a finishing mechanism with a finishing screed installed at the rear edge that slides from side to side. This concrete finisher runs on rails laid on the side edges of the roadbed.

However, since the width of the roadbed varies depending on the construction site, conventional general concrete finishers combine spacers with appropriate widths and remove these spacers from the frame.
The wheel spacing is adjusted to match the rail spacing at the construction site. Therefore, lifting the heavy concrete finisher body and assembling and joining the spacers is time consuming and labor intensive, resulting in poor work efficiency.

Therefore, JP-A-Sho developed a concrete paver that can adjust the spacing between track wheels placed on the rails.
This method is proposed by Japanese Patent No. 58-127811.

<Problems to be Solved by the Invention> However, in the conventional concrete paver configured to allow adjustment of the wheel spacing, the spacing between the front and rear wheels is individually adjusted. Furthermore, the spacing between the track support wheels that support the swing beams used for finishing on the rails is also adjusted separately.

Therefore, the width adjustment was very time consuming. If the spacing between each wheel was not adjusted accurately, the train could easily come off the rail, posing the risk of derailment.

On the other hand, due to structural constraints on the tracks of new urban transportation systems, it is not possible to embed anchor bolts, etc., so it is sometimes impossible to fix the rails to the roadbed. At such sites, the concrete finisher shakes sideways due to vibrations during the finishing process, causing
Because the rails shift, precise finishing cannot be achieved and there is a risk of derailment.

<Means for Solving the Problems> The present invention was proposed in view of the above, and the present invention runs on rails laid on the side edge of a roadbed using wheels provided on a frame, and a blade-type spretzer is installed on the front edge of the frame. In a concrete finisher that has a finishing mechanism with a vibrating plate below the center and a finishing screed on the rear edge, the width can be adjusted via a variable support mechanism with feeding mechanisms on the left and right sides of the base frame. A pair of movable frames installed opposite each other, wheels installed on the movable frames so that they can run, a variable telescoping frame provided in front of the base frame so as to interlock with the movable frames, and width adjustment using adjustment members on the variable telescoping frames. A oscillating plate is provided in the middle of the base frame so that its width can be adjusted by an adjustment member, a support plate is provided at the rear of the movable frame so as to be swingable via a support mechanism, and a support A finishing mechanism is provided on the plate so that the width can be adjusted using an adjustment member, and an auxiliary wheel is provided on the support plate.The spacing between the movable frames is adjusted by the operation of the feeding mechanism, and the spacing between each wheel is adjusted to the spacing between the rails. In addition, the spacing of the auxiliary wheels is made to correspond in conjunction with the movable frame, and the widths of the spreader, the vibration plate, and the finishing mechanism are made to correspond to the above-mentioned wheel spacing.

<Function> The variable support mechanism interposed between the base frame and the movable frame allows the interval between each wheel and the interval between the auxiliary wheels provided on the movable frame to simultaneously correspond to the interval between the laid rails, The spacing between the blade-type spreader, the vibrating plate, and the finishing screed can be adjusted to a desired width corresponding to the spacing between the rails by providing adjusting members, respectively.

<Example> Hereinafter, the present invention will be described with reference to an example shown in the drawings.

Concrete finisher 1 is frame 2
At the front edge of the roadbed, there is a blade-type spreader 3 that spreads the ready-mixed concrete A supplied onto the roadbed almost uniformly over the entire width of the road and makes it to a predetermined thickness. It has a vibrating plate 4 that removes air bubbles existing in concrete and compacts it, and has a finishing mechanism 5 at the rear edge that moves left and right to smooth the surface of the poured concrete. Further, the frame 2 is supported by wheels 7 attached to a bearing plate 6 so as to be able to run on the rail R.

According to the illustrated embodiment, the frame 2 includes a base frame 8 and a pair of movable frames 9 located on the left and right sides of the base frame 8.
are supported by the variable support mechanism 10. The variable support mechanism 10 consists of an outer cylinder 11 provided on the base frame 8 and an inner cylinder 12 provided on the movable frame 9. The inside of the outer cylinder 11 is moved by a feed mechanism 13 operated by a hydraulic cylinder mechanism or screw mechanism. The inner cylinder 12 moves. Therefore, when the feeding mechanism 13 is operated, the inner cylinder 12 extends from the outer cylinder 11, and the opposing movable frames 9, 9
The interval between increases. On the other hand, if the feeding mechanism 13 is contracted, the interval between the movable frames 9 is narrowed.

The movable frame 9 is provided with wheels 7 via a suspension mechanism 14 so as to be movable up and down. The wheel 7 is rotatably supported by a bearing plate 6, the bearing plate 6 is swingably supported by a movable frame 9 by a support shaft 15, and each bearing plate 6 is linked by a link mechanism 16. Further, driving force is transmitted to each wheel 7 via a drive mechanism 17 to cause the concrete finisher 1 to run on the rail R.

At the front edge of the base frame 8, there are left and right movable frames 9.
A telescopic variable frame 10' that can be vertically adjusted with respect to the movable frame 9 is provided at the front end of the movable frame 9, a sub-frame 18 is attached to the variable part 12, and a fixed part 11'
A sub-bracket 18' is extended to the sub-frame 18 and the sub-bracket 18', and the blade type spreader 3 is provided on the sub-frame 18 and the sub-bracket 18'. The blade type spreader 3 is supported by the rotating shaft 19 and the sub-frame 18 by adding an extension blade 20' as an adjustment member to a rotating shaft 19 supported by a sub-bracket 18' and having a plurality of blades 20. It consists of a retractable shaft 19' to which the extension blade 20' can be attached and detached, so that it can follow changes in the interval of the movable frame 9. Further, the blade type spreader is rotated by a motor 22 via a chain 21 or the like.

Further, below the substantially central portion of the base frame 8, a vibrating plate 4 having a ship bottom-shaped cross section is provided. This vibrating plate 4 converts the rotation of a motor 23 into vertical motion by a vibrating mechanism 24, and compacts the fresh concrete spread by a blade type spreader. The width of the vibrating plate 4 can be adjusted to a desired width by adding an auxiliary plate 4' which is an adjusting member.

A finishing mechanism 5 having a finishing screed 25 for smoothing the surface of the concrete A compacted by the vibrating plate 4 is provided at the rear edge of the base frame 8.

According to the illustrated embodiment, in the finishing mechanism 5, a support plate 27 having an auxiliary wheel 26 that rests on the rail R is connected to the rear of the movable frame 9 via a support mechanism 28, and is supported by the support mechanism 28. The height of the finishing screed 25 can be adjusted by raising and lowering the plate 27 in parallel. Further, a pedestal part 29 is installed between the two supporting plates 27, 27, and this pedestal part 29 also has the same structure as the telescopic variable frame 10'. The width can be changed at the same time in conjunction with the frame 9.

The finishing mechanism 5 has, for example, two finishing screeds 25, 25 that are substantially parallel to each other so as to be orthogonal to the direction of movement, and each screed 25 has a substantially E-shaped cross section. Also, this screed 2
5 is a pair of upper and lower rollers 31, 31 provided on a suspension mechanism 30 installed on the pedestal section 29, and the upper crosspiece section 32 is
By supporting the concrete finisher 1, it can slide in the width direction of the concrete finisher 1. In the illustrated embodiment, the finishing screed 25 is configured to be perpendicular to the direction of travel, but the finishing screed 25 may be configured to have an angle other than perpendicular to the direction of travel. Further, the suspension mechanism 30
By rotating the handle 33, the height position of the screed 25 can be changed.

On the other hand, the screed 25 is provided with a driving means 34. That is, the drive motor 35 is provided on the pedestal section 29,
A crank member 3 is attached to the output shaft 36 of the drive motor 35.
A rod end bearing 38 provided on the upper surface of the upper crosspiece 32 of the screed 25 on one side and the crank member 37 are connected by a connecting rod 39. Further, a driven shaft 4 is mounted on the frame portion 29 together with a drive motor 35.
0 are arranged in parallel, and a crank member 37 provided on this driven shaft 40 and a rod end bearing 38 provided on the upper surface of another creed lead 25 are connected by a connecting rod 39. Further, the driven shaft 40 and the drive motor 35 are connected by a chain 41 or the like to form a drive means 34. At this time, the crank member 37 and connecting rod 39 are set so that both screeds 25, 25 slide in opposite phases to each other. It should be noted that each screed 25 can be connected with an attachment 42 as an adjustment member so as to have a desired length.

In order to pave a road surface with the concrete finisher 1 configured as described above, the concrete finisher 1 must be placed on the rails R laid on the side edges of the roadbed, but the rail spacing must be It's different on the spot. Therefore, first, the distance between the wheels 7 is adjusted to the distance between the rails R. That is, by operating the feed mechanism 13, the inner cylinder 12 constituting the variable support mechanism 10 is extended from the outer cylinder 11, the interval between the movable frames 9 is expanded, and the interval between the wheels 7 provided on the movable frame 9 is adjusted to the rail R. Match the spacing. After the concrete finisher 1 is placed on the rail R with the intervals between the wheels 7 adjusted as described above, the extension blades 20', which are adjustment members, are attached to the attached blade-type spreader 3, vibrating plate 4, and finishing screed 25. Add the auxiliary board 4' and attachment 42 and adjust it to the desired width.
It is sufficient to process the ready-mixed concrete supplied onto the roadbed while running on the rails. At this time, according to the above-described finishing mechanism, the screeds slide in opposite phases to each other, so that no vibration occurs.

In addition, in the drawing, the movable frame 9 on one side is extended by operating the feed mechanism 13 on one side, and the vibration plate 4 and the finishing screed 25 are moved along the movable frame 9.
The figure shows a state in which the auxiliary board 4' and attachments 42 are added, but in reality, the same amount is extended to both the left and right sides in the direction of movement, and the auxiliary boards 4' and attachments 42 are added to both sides to create left-right symmetry.

Although the present invention has been described above with reference to the embodiments shown in the drawings, the present invention is not limited to the above-mentioned embodiments, and can be implemented as appropriate without changing the configurations set forth in the claims. For example, there may be one finishing screed.

<Effects of the invention> The concrete finisher according to the invention has the following effects:
It is equipped with a pair of movable frames with front and rear wheels, and auxiliary wheels whose spacing changes in conjunction with this movable frame, so by adjusting the spacing of the movable frames, all wheel spacing can be adjusted to match the rails at the construction site. It is possible to correspond to the interval at the same time. Therefore,
According to the present invention, all wheel intervals can be adjusted with extremely simple work, and work efficiency is significantly improved. Furthermore, once one wheel spacing is set, the spacing for each wheel is automatically set, which not only saves time and effort, but also enables accurate setting. In addition, in the present invention, Spretzda,
Since the width of the diaphragm and the finishing screed is made to follow the change in the spacing between the frames using the adjustment member, a uniform finish can be obtained over the entire width of the construction site. According to the present invention,
Not only does it eliminate the need to handle heavy spacers, but it also eliminates the need to adjust the spacing for each wheel individually, making width adjustment extremely easy, allowing for safe and economical construction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a plan view, FIG. 4 is a rear view, and FIG. 5 is taken along the V-V line of FIG. 1. Sectional view, No. 6
The figure is a sectional view of the finishing mechanism, and FIG. 7 is a partially cutaway plan view of the finishing mechanism. DESCRIPTION OF SYMBOLS 1... Concrete finisher, 2... Frame, 3... Blade type spreader, 4... Vibration plate, 5... Finishing mechanism, 7... Wheel, 8... Base frame, 9... Movable frame, 18...Subframe, 19...Rotating shaft, 20...Blade, 25...Finishing screed.

Claims (1)

[Claims] 1. The vehicle runs on rails laid on the side edges of the roadbed using wheels attached to a frame, and has a blade-type spreader on the front edge of the frame, a vibration plate below the center, and a vibration plate on the rear edge. In a concrete finisher that has a finishing mechanism each equipped with a finishing screed, a pair of movable frames are installed opposite each other so that the width can be adjusted through variable support mechanisms that have feeding mechanisms on the left and right sides of the base frame, and a movable frame that can be moved to the left and right of the base frame. A telescopic variable frame provided in front of the base frame so as to be interlocked with the movable frame, a blade-type spreader provided on the telescopic variable frame so that its width can be adjusted by an adjustment member, and inside the base frame. A vibrating plate whose width can be adjusted using an adjustment member, a base plate that is installed behind the movable frame so that it can swing via a support mechanism, and a finishing mechanism that is installed on the base plate so that its width can be adjusted using an adjustment member. , and auxiliary wheels provided on the support plate, and the spacing between the movable frames is adjusted by the operation of the above-mentioned feeding mechanism so that the spacing between each wheel corresponds to the spacing between the rails, and the spacing between the auxiliary wheels is linked to the movable frame. A concrete finisher characterized in that the widths of a spreader, a vibrating plate, and a finishing mechanism are adjusted by an adjusting member so as to correspond to the wheel spacing.