JPS5824572B2 - Soil excavation method for crushed rock - Google Patents

Description

[Detailed Description of the Invention] The present invention is a method for constructing crushed rock for construction of residential land, mining related mining, etc. by transporting crushed rock that has been blown up by blasting at a construction site to a predetermined location. Regarding.

This type of construction method, which has been used in the past, involves using a bulldozer or the like to eject and drop the crushed rock obtained in the above manner from the elevated area of the superstructure to the ground level one level lower than this. A crushing face is formed along the slope, and the crushed rock on the face is collected using a wheel loader or power shovel that runs on the ground, and is transported to a predetermined location and crushed by a crushing loader. After the rock is crushed into fine pieces, the crushed fine stones are transported to a predetermined location by various belt conveyors.

On the other hand, in the case of earth and sand rather than rock as mentioned above, a belt loader is brought close to the earth and sand face of the paragraph ground, and the earth and sand is loaded onto a dump truck by the belt loader, but large lumps In the case of the above-mentioned crushed rock, which has a lot of rough stones, even if a belt loader for earth and sand is used,
The belt breaks or wears out in a short period of time, making it impossible to operate.Therefore, there is no other choice but to adopt the conventional method as described above for earthworks for crushed rock, and as a result,
Quarrying with wheel loaders, power shovels, etc., slow back-and-forth movement for transportation, and crushing with crushing loaders are essential, and the efficiency of earth excavation work is extremely low and it takes several years to prepare land for housing. There were quite a few.

The present invention is intended to solve these difficulties and make it possible to dramatically shorten the construction period.The main feature of the present invention is that the construction work is carried out from the height of the building, along the slope, and towards the ground level. By dropping crushed rock with a bulldozer or the like, a crushing face is formed, and a trap that opens on the lower base end side of the belt loader above the stage ground is located at the foot of the crushing face, and the belt loader is equipped with a rock handling unit for dropping or scraping crushed rocks into the trap, and the falling crushed rocks can be manipulated directly or through the rock handling unit to remove them from the trap. A person is dropped and placed on the lower side of the steel cord person locking belt of a belt conveyor equipped with a belt loader, and the belt conveyor is operated under constant horsepower control to respond to the load caused by crushed rock. The rotation speed is controlled to be slow or fast, and after the crushed rock on the steel cord human locking belt is lifted and transferred to the higher side of the belt, from the high discharge end of the belt. , the belt loader discharges and loads the crushed rock onto a waiting dump truck, drives the loaded dump truck, transfers and releases the loaded crushed rock to a predetermined location, and loads the dump truck onto the dump truck. This is due to repeated transfers.

Here, the present invention will be described in detail with reference to the drawings. As shown in Fig. 1, crushed rock B is obtained by blasting at the high point A of the building construction site, and this is obtained from the same place A at any time. A bulldozer (not shown) or the like is used to lower the slope C along the slope C, thereby forming a crushed face E of crushed rocks B in an accumulated state.

In the present invention, the belt loader 1 on the stepped ground is mounted on the hem E' of the crushing face E, and the trap 2, which opens at the lower base end side of the loader 1, is positioned at the hem E'. Let it be.

The belt loader 1 shown here is freely movable as a self-propelled type or a towed type, and numeral 3 denotes a truck of a machine body 4, and numeral 5 denotes a conveyor frame installed diagonally on the machine body 4 from the lower base end side to the higher end side. A belt conveyor 12 is constituted by a steel cord person locking belt 11 being wound around a drive pulley 6, a tail pulley 7, a pent pulley 8'8', a head pulley 9, and a tension pulley 10 of the same frame 5.

Further, the trap 2 is opened in the inclined top plate 13' of the front cover 13 surrounding the lower base end of the belt 11, and the trap 14 protects the belt loader 1 from the falling crushed rocks B. The crushed rock B at the foot E' is placed on the lower proximal end of the steel cord belt 11 from the trap 2.

Further, reference numeral 15 in the figure is an operator's cabin, and the operator in the same cabin 15 operates the belt conveyor 12 in a timely manner.
7', the rock group B' which has become a bridge as shown in Fig. 2 at the mouth of the trap 2 is moved, the bridge is broken and the crushed rock B is dropped into the trap 2, or a bulldozer is used as described above. When the falling movement of the crushed rocks B due to - is stopped, the rock operation section 17 can be operated by the turntable 16 to scrape the crushed rocks B around the front cover 13 and drop them into the trap 2.

In addition, 18 in the figure is a dump truck, which can freely move in and out to a position directly below the high-place discharge end 12' of the belt conveyor 12, and here, the steel cord person locking belt 11 is inserted in the longitudinal direction as shown in FIG. A large number of steel cords 11', 11', . . . are buried in the opposite direction.

Furthermore, this belt conveyor 12 is configured to be operated under constant horsepower control, so that when the crushed rock B falls from the trap 2 and a load is applied to the belt conveyor 12, the belt conveyor 12 responds according to the magnitude of the load. As a result, the rotational feed speed of the conveyor 12 is controlled to become slower or faster.

Therefore, as described above, when the crushed rocks B at the hem E' (7) are sequentially dropped from the trap 2 onto the lower proximal end side of the steel cord human locking belt 11, the belt conveyor 1
2 is in operation, the crushed rock B is in the same belt 1.
After being lifted and transferred to the higher side of the belt 11, the dump truck 18 is discharged from the high discharge end 12' of the belt 11 and placed on the dump truck 18 that is waiting in front of the belt loader 1, and is fully loaded in the usual manner. Then the truck 18 starts toward the destination.

When the operator in the driver's cab 15 confirms that the vehicle is fully loaded just before starting, the operator in the driver's cab 15 stops the operation of the belt conveyor 12, and when the next dump truck 18 has stopped at a predetermined position, the conveyor 12 is operated again. Loading onto the dump truck 18 and transporting to a predetermined destination are repeated.

As embodied in the above-mentioned manner, the present invention does not use a mere conventional belt for the belt conveyor 12, but uses a steel cord artificial lifting belt 11, so that its durability is extremely high. Therefore, even if a fairly large lump of raw rock is placed, it is not only able to withstand it, but also because the belt conveyor 12 is operated under constant horsepower control to transport the crushed rock B. Even if the crushed rock B loaded from the trap 2 is a large lump or the weight of the crushed rock B is added from above, the belt 11 can be transferred by the constant horsepower control. Since the speed is reduced, no slip occurs between the rock B and the belt 11, and therefore, this type of slip does not cause the belt 11 to be cut or worn out by the sharp edges of the rock. ,
The belt remains virtually undamaged despite the transport of rocks and can withstand long-term use.

In addition, if the mouth of the trap 2 is clogged with rocks B', it is loosened by the rock handling unit 17 and dropped into the trap 2, and when the falling of the crushed rocks B by the bulldozer is stopped, the rock group B' is Since the rock operation unit 17 is operated to scrape and drop the crushed rock B at the bottom of the crushing face E' into the trap 2, the collection of the crushed rock B by the belt loader 1 can be carried out smoothly without interruption, and there is no stagnation in the collection work. It can be resolved.

The belt loader 1 allows the crushed rock B to be directly loaded onto the dump truck 18 without using a crushing hanger or the like.
It is now possible to carry out construction work that fully utilizes the transfer capacity of 8. Compared to the conventional construction methods using wheel loaders and power shovels, the capacity is approximately three times as much and the time required is approximately one quarter, significantly streamlining the process. 1 of the wheel loader as the output of
/2 or less, which is about 250 horsepower (diesel engine), and it is possible to realize energy savings due to significant fuel savings.

Moreover, as mentioned above, since the dump truck 18 is continuously loaded, even if the transfer speed of the belt conveyor 12 is less than 60 m/min, the loading time to the 45 t dump truck is about 1 minute, which is compared to the conventional work method. , it is possible to achieve a revolutionary speedup.

[Brief explanation of the drawing]

Fig. 1 is a side explanatory view showing an embodiment of the roof construction method according to the present invention, Fig. 2 is a partially cutaway plan view of the belt loader in Fig. 1, and Fig. 3 is a steel cord human lock of the loader. FIG. A: High ridge, B: Crushed rock, C
...Slope, D...Paragraph ground, E...
... Crushing face, E'-... Hem of the crushing face, 1
...Belt loader, 2...Trap,
11...Steel cord human lock belt, 1
2...Belt conveyor, 12'...High place discharge end, 1T...Rock operation section, 18...
··Dump truck.

Claims (1)

[Claims] 1. A crushing face is formed by dropping crushed rock from the height of the ridge toward the ground of the paragraph along the slope using a bulldozer, and a trap is opened at the lower base end of the belt loader above the ground of the row. , is located at the foot of the crushing face, and the belt loader is equipped with a rock handling unit for dropping and scraping the crushed rocks into the trap, and the belt loader is equipped with a rock handling unit for dropping the crushed rocks into the trap and scraping up the crushed rocks. A person is allowed to fall from the trap by operating directly or through the rock operation section, and placed on the lower side of the steel cord person locking belt of a belt conveyor equipped with a belt loader, and constant horsepower control is applied to the belt conveyor. By operating it, the rotating speed is controlled to be slow or fast depending on the magnitude of the load caused by the crushed rock, and the crushed rock on the steel cord human lock belt is moved to the higher side of the belt. After lifting and transferring, the crushed rock is discharged from the high-place discharge end of the same belt to a dump truck waiting for Perdro Dani and loaded, and the loaded dump truck is driven to move the loaded crushed rock to a predetermined location. A method for constructing a superstructure for crushed rock, characterized in that the above-mentioned ffting and transferring to the tap truck are repeated.