JPS629364Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crusher that crushes asphalt pavement waste into appropriate particle size when recycling the asphalt pavement waste.

In recent years, recycling of asphalt pavement waste has become popular. In this recycling, aged and demolished asphalt pavement waste is heated to make it fluid so that it can be resurfaced, and the blended ingredients such as aggregate and asphalt are readjusted, and the asphalt is regenerated. I am trying to use it as a material.

However, demolished asphalt pavement waste is generally large (for example, 50 cm to 1 m square), making it inconvenient to handle and making it difficult to adjust the ingredients. For this reason, bulky waste materials must first be broken down into their original aggregates such as crushed stone or sand, and then classified.Currently, the methods for this are hot water (or steam) breaking, or mechanical breaking using a crusher. The material formula is adopted. However, the hot water (or steam) demolition method requires the installation of a boiler and generates sludge, making it inconvenient to handle. Additionally, the mechanical dismantling method was not always suitable for asphalt pavement waste.

In order to better understand the present invention, an example of a conventional mechanical crushing apparatus will be described with reference to FIG. 1. That is, asphalt pavement waste material is inputted from a hopper 1, and is fed in fixed amounts to a primary crusher 3 by a quantitative feeder 2. The wood crushed by the primary crusher 3 is conveyed by a belt conveyor 4 and supplied to the secondary crusher 5. The crushed wood that has been further finely crushed by the secondary crusher 5 is fed to a screen 8 by a belt conveyor 6 and a bucket elevator 7, where it is sorted into, for example, four levels of particle size, and the crushed wood on the top stage is is oversized and is fed to the belt conveyor 4 and crushed again by the secondary crusher 5. The remainder is stored in the corresponding section of stockyard 9.

In such conventional crushing equipment, a geo crusher is generally employed as the primary crusher 3, but since the width of the waste material input opening is usually 960 mm to 1200 mm, it is possible to directly transfer the waste material from a wheel loader (not shown). However, it was not possible to fully utilize its capabilities unless it was continuously fed in a certain amount. For this reason, a hopper 1 that receives waste material from the wheel loader and a metering feeder 2 that supplies a fixed amount of waste material to the primary crusher 3 are essential as ancillary equipment, which not only increases equipment costs but also requires a large site. There were flaws.
Moreover, the geo crusher as the primary crusher 3 was originally designed for crushing rocks and adopted a compression crushing method, so it was not suitable for crushing highly sticky materials such as asphalt pavement waste. Particularly in the summer, asphalt pavement waste is exposed to the scorching sun and is highly flexible, so even if it is fed into the Jyo crusher as the primary crusher 3, it is often rolled but not crushed, resulting in an extreme decrease in crushing capacity. It was causing a problem.

In order to eliminate these inconveniences, models with improved teeth of the Jyo crusher and special machines for crushing asphalt waste have been developed, but even in these crushers, the hopper 1 and quantitative feeder 2 are still separated. The disadvantage of requiring .

Therefore, an object of the present invention is to provide a crusher for asphalt pavement waste material that eliminates the drawbacks of the prior art as described above and can crush coarse asphalt pavement waste material more easily and efficiently. It is in.

According to the present invention, there is provided a hopper for feeding asphalt pavement waste, three or more drum cutters installed in parallel at predetermined intervals to form the bottom of the hopper, and a drum cutter for each of the asphalt pavement waste materials. The drum cutter is provided with a drive device that rotates the material in a direction that prevents it from being bitten, and a discharge port that takes out the disintegrated wood scraped by the drum cutter from below the drum cutter. Therefore, the asphalt pavement waste material fed into the hopper is gradually scraped off on the drum cutter without being caught between the drum cutters, falls downward, and is taken out as disintegrated material of appropriate particle size from the discharge port. In this case, even if the asphalt pavement waste material has viscosity, the crushed material is formed by scraping with the drum cutter, so the crushing ability is not reduced. Furthermore, since the hopper can have a wide loading opening and can be loaded continuously or all at once, asphalt pavement waste can be loaded directly from the foil loader.

When carrying out the present invention, it is preferable that the drum cutters are installed at intervals such that the gap between the drums is approximately the same size as the target disintegration particle size (generally 100 to 150 mm). Scraping is done effectively and the most efficient crushing ability is obtained. Further, it is preferable that the crushed wood formed by the crusher of the present invention is further crushed into finer pieces by a secondary crusher, and the crushed material is screened to be sorted and recovered according to the particle size. However, depending on the intended crushing particle size, it is also possible to use the crushed wood formed by the crusher according to the present invention as it is.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 to 4. Note that substantially the same parts as those of the crushing device shown in FIG. 1 are given the same reference numerals.

FIG. 2 shows a crushing device to which the crusher according to the present invention is applied. That is, asphalt pavement waste is directly fed into the crusher 11 from a wheel loader (not shown), and is crushed by the crusher 11 to a certain degree of particle size. This disintegrated wood is supplied to a secondary crusher 5 by a belt conveyor 4, where it is further crushed into fine pieces. Thereafter, the grains are sorted according to particle size by a screen 8 and stored in a stockyard 9, similarly to the apparatus shown in FIG. Therefore, when the crusher 11 according to the present invention is applied, the hopper 1 and the metering feeder 2 in the apparatus shown in FIG. 1 become unnecessary. Machine 1
1 structure is shown. That is, the hopper 13 is supported on the upper part of the pedestal 12, and the upper opening 13a of the hopper 13 has a size that allows even coarse asphalt pavement waste to be thrown in easily. Inside the hopper 13, four drum cutters 14 are installed in parallel so as to form the bottom of the hopper 13. In this case, the two outer drum cutters 14 are located slightly above the two inner drum cutters 14, and the spacing between each drum cutter 14 is approximately the same as the maximum dimension of the desired disintegration particle size. The dimensions are set to be, for example, 100 to 150 mm. A large number of bits 14a are installed on the outer periphery of the drum of the drum cutter 14, and the asphalt pavement waste material A is scraped off by these bits 14a. A box 15 is provided adjacent to the hopper 13, and a hydraulic motor 16 driven by high-pressure oil pumped from a hydraulic pump (not shown) is installed above the box 15. A drive pulley 17 is attached to the drive shaft 16a of the hydraulic motor 16, and a V-belt is adjusted between the drive pulley 17 and a driven pulley 18 attached to the rotating shaft 14b of any one of the drum cutters 14. The rotation of the drive shaft 16a is transmitted to the rotation shaft 14b. Further, a gear 19 is attached to the rotating shaft 14b, and a gear 19' attached to the rotating shaft 14c of the other drum cutter 14.
The rotation of the rotating shaft 14b is caused by the gear 1
9 and 19', it is transmitted to the rotating shaft 14c of another drum cutter 14. In this case, the rotation direction of each drum cutter 14 is
As shown by the arrow in the figure, asphalt pavement waste material A
It is set so that it rotates in a direction that does not force it to bite. Incidentally, sprockets, chains, etc. may be used in place of the gears 19, 19', or gears, sprockets, and chains may be used in combination. A discharge port 13b is formed at the bottom of the hopper 13, and an apron feeder 20 is installed below the discharge port 13b. The apron feeder 20 is driven by an electric motor 22 installed on a cover 21, and a gate 23 pivotally supported on the cover 21 is provided in front of the apron feeder 20 in the conveyance direction. The lower part of the front end of the apron feeder 20 is made of chip-shaped material B cut off by the drum cutter 14.
It serves as a take-out portion 25.

In the above configuration, while driving the hydraulic motor 16 to rotate each drum cutter 14,
The apron feeder 2 is driven by the electric motor 22.
Move 0. In this state, when asphalt pavement waste material A is introduced from the upper opening 13a of the hopper 13 from a wheel loader (not shown), the asphalt pavement waste material A is scraped off by the bit 14a of the drum cutter 14, becomes chip-shaped material B, and is pushed downward. Fall. In this case, each drum cutter 14
Since the asphalt pavement waste material A is rotated in a direction that does not bite the asphalt pavement waste material A, the asphalt pavement waste material A is only caught between the drum cutters 14 and rolled, and does not fall downward without being crushed. Even if a large amount of waste material A is thrown in at once, there is no problem in cutting it off by the drum cutter 14. The thus scraped wood B is accumulated near the discharge port 13b of the hopper 13, and is conveyed by the apron feeder 20 in the direction of the arrow in FIG. In this case, by rotating the gate 23 in the direction of the arrow in the figure, the amount of outflow of the disintegrated wood B can be adjusted and quantified.
Then, the dismantled material B that has reached the front end of the apron feeder 20 falls from the take-out section 25 and is transferred to the secondary crusher 5 on the belt conveyor 4 shown in FIG.
It will be carried to. Note that by adjusting the flow rate of high-pressure oil introduced into the hydraulic motor 16, the drum cutter 14 can be rotated at any speed, so the optimum rotation speed can be achieved depending on the seasonal characteristics of the asphalt pavement waste material A. be able to.

As explained above, according to the present invention, the drum cutters installed in parallel at predetermined intervals to form the bottom of the hopper rotate in a direction that does not bite asphalt pavement waste. Asphalt pavement waste is gradually scraped away from its outer periphery and turned into dismantled material. Therefore, despite the viscosity of asphalt pavement waste, it is possible to efficiently break up the asphalt pavement waste material to have a constant particle size, and the driving force of the drum cutter does not need to be particularly large. In addition, the input opening of the hopper can be widened, and even if a large amount is input at once, there is no problem in scraping it off with a drum cutter, so even coarse asphalt pavement waste can be input directly from the wheel loader.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the schematic structure of a conventional crushing device;
FIG. 2 is a diagram showing a schematic structure of a crusher to which the crusher according to the present invention is applied, FIG. 3 is a front cross-sectional view of the crusher according to the present invention, and FIG. 4 is a side cross-sectional view of the crusher. 11...Crushing machine, 13...Hopper, 13a...
...Top opening, 13b...Discharge port, 14...Drum cutter, 14a...Bit, 14b, 14c...
... Rotating shaft, 16 ... Hydraulic motor, 17 ... Drive pulley, 18 ... Driven pulley, 19, 19' ... Gear, A ... Asphalt pavement waste, B ... Dismantling.

Claims (1)

[Scope of utility model registration request] A hopper for inputting asphalt pavement waste, three or more drum cutters installed in parallel at predetermined intervals to form the bottom of the hopper, and each of the drum cutters oriented in a direction that does not bite the asphalt pavement waste. A crusher for asphalt pavement waste material, comprising: a rotating drive device; and a discharge port for taking out the disintegrated wood cut by the drum cutter from below the drum cutter.