JPS62148792A - Rock drilling apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a rock excavation device, and more particularly to a rock excavation device using a weight.

<Prior Art> Conventionally, as a rock excavation device that utilizes a falling weight, there is a device as shown in FIG. 3, for example.

In this device, a weight 6 is connected to a wire rope 7, and the entire device is supported by a tower 8.

A through hole A is located in the center of the weight 6, and a drain pipe 9 is disposed in this through hole A.

Excavation of rock with conventional equipment is performed as follows.

First, the wire rope 7 is wound up by a winch operation, and the weight 6 is lifted up.

After lifting the weight 6 to a certain position, the wound wire rope 7 is released and the weight 6 is dropped.

Then, the front crushing blade 41 located at the lowest end of the weight 6 touches the rock G.
It collides with and shatters bedrock G.

Sludge generated when the rock is crushed is discharged from a drain pipe 9 located at the center of the weight 6, and excavation work is performed.

To continue excavation, the weight 6 that is in contact with the bedrock G is lifted again.

Problems to be solved by the present invention> Conventional devices have the following problems.

Kui> The weight of the lifted weights, wire ropes, and other parts will all be on the turret, so it is necessary to make the turret strong.

In addition, since the turret is installed on the ground, the center of gravity is high (and unstable) when the weight is lifted.

In other words, there is a risk that the equipment may fall over on a somewhat uneven surface, making it impossible to work with peace of mind.

Exit> When releasing the wire rope, it is necessary to adjust the length of the wire rope.

This is because, if the length of the wire rope is too small, the weight may not reach the bedrock and the wire rope may be cut.

On the other hand, if the length of the wire rope is too long, there is no risk that the wire rope will be cut, but there is a risk that the wire rope will be wound irregularly when the wire rope is wound next time.

Kuha> The weight is lifted and dropped (that is, the weight is moved up and down) by operating the wire rope with a winch.

Therefore, there is a limit to increasing the winding speed of the winch in order to improve excavation efficiency.

Furthermore, since the lifting height of the weight is determined by the operator's control, the vertical stroke of the weight is unstable.

The vertical movement of the weight uses the drainage pipe located in the center as a guide.

Therefore, since the drain pipe must be made of steel or the like, the drain pipe cannot be made of light synthetic resin, soft hose, or the like.

Kuho〉When the front crushing blade located at the bottom of the weight collides with the rock, the waste is pushed out by the weight and accumulates around the weight that is in contact with the bedrock.

When the weight is lifted again, the debris that had accumulated around the weight enters the excavated rock.

Therefore, when the weight is dropped next time, the crushing front blade cannot collide directly with the rock and the crushing front is further crushed, resulting in a decrease in excavation efficiency.

Purpose> An object of the present invention is to provide a rock excavation device that solves the above-mentioned problems.

<Embodiment> As an embodiment of the present invention is shown in FIG. Bedrock G located below
It consists of a rock crushing member 4 that is in contact with the rock crushing member 4, and a guide frame 5 that supports the whole.

Each part will be described in detail below with reference to the drawings.

B) Impact weight The impact weight 1, which is the impact weight, has a cylindrical shape, and a hanging fitting 11 is attached to the upper end.

The central portion has a through hole A for arranging the drain pipe 9.

In the present invention, the impact weight 1 is moved up and down using the jack 2, so wire ropes, winches, etc. are not necessary.

The jack 2 has a structure that can be freely expanded and contracted by hydraulic pressure, air pressure, etc. in order to move the striking weight 1 up and down using the rock crushing member 4 as a reaction force, and when raising the striking weight 1. supplies oil, air, etc. to the jack 2, and suddenly releases the pressure inside the jack 2 when dropping the striking weight 1.

The upper end of the jack 2 is connected to a lift beam 21 located below the hanging fitting 11.

Since the lift beam 21 and the hanging fitting 11 are in contact with each other, if the jack 2 is extended to lift the lift beam 21, the striking weight 1 to which the hanging fitting 11 is attached will be pushed up.

On the other hand, the lower end of the jack 2 is connected to a jack holder 22.

This jack holder 22 is located at the upper end of the anvil 3 and transmits the reaction force when the jack 2 is extended to the anvil 3.

Therefore, the total weight when the jack 2 is extended (when the striking weight 1 is lifted) is transferred via the jack holder 22 to
It is supported by an anvil 3 and a crushing member 4 located below it.

Kuha>Anvil The anvil 3 is a part that transmits the impact force of the striking weight 1 to the conglomerate member 4, and is located between the striking weight 1 and the conglomerate member 4.

A bumper 31 is provided above the center of the anvil 3.

The center portion of the anvil 3 has a through hole A for arranging a drain pipe 9.

<2> Conglomerate member The conglomerate member 4 is located under the anvil 3 and is a part for crushing the rock G with the lowermost front crushing blade 41, and has a through hole A in the center part.
has.

A discharge pipe 9 is located in this through hole A, and the waste generated when the rock G is crushed is discharged from the discharge pipe 9.

The shape of the conglomerate member 4 is, for example, a cylindrical shape that widens at the end as shown in the figure, but it is also possible to make the crushing front blade 41 located at the tip into a chevron shape as shown in FIG. sludge is easily removed.

Kuho〉Guide frame The guide frame 5 supports the entire structure and supports the striking weight 1.
It guides the vertical movement of the anvil 3, etc.

By attaching the stroke detector 51 to the guide frame 5, the stroke of the striking weight 1 can be accurately known.

Next, the operation of the rock excavation apparatus of the present invention will be explained.

1> Pushing up the striking weight The striking weight 1 is pushed up by the jack 2.

At this time, since the height of the push-up of the impact weight 1 is determined by the amount of extension of the jack 2, by attaching a stroke detector 51 or the like, the push-up can be performed accurately without depending on the operator's finger.

Furthermore, even if the striking weight 1 is pushed up by the jack 2,
The conglomerate member 4 located below is not lifted up and is in contact with the bedrock G.

2> Dropping of the percussion weight Once the jack 2 is extended and the percussion weight 1 is pushed up to the expected drop height, the pressure inside the jack 2 is suddenly released and the percussion weight 1 is dropped.

The impact force when the striking weight 1 falls and collides with the anvil 3 is transmitted from the anvil 3 to the conglomerate member 4, so that the front crushing blade 41 of the conglomerate member 4 crushes the rock G by the impact force.

Sludge generated when the bedrock G is crushed is discharged from a drain pipe 9 located in a through hole A penetrating the center of the striking weight 1, anvil 3, and conglomerate member 4, and the bedrock G is excavated.

<3> Continuation of excavation To continue excavation, the impact weight 1 is pushed up again by the jack 2, and the above-described cycle is repeated.

At this time, in the case of the present invention, even if the striking weight 1 is pushed up,
The conglomerate member 4 remains in contact with the bedrock G.

Effects> Since the present invention has been described above, the following effects can be expected.

Kui〉The entire weight of the striking weight when the jack is extended (when the striking weight is lifted) is supported by the anvil and the conglomerate member located below it via the jack cradle. There is no need to strengthen the tower.

Further, since the conglomerate member is supported by the excavated rock at a position lower than the ground, the center of gravity of the entire rock excavation device is low even when the percussion type tank is lifted.

Therefore, there is little risk of it falling over even in uneven places, so it can be used with confidence.

In order to drop the striking weight, it is sufficient to release the hydraulic pressure of the jack, so there is no need to adjust the length of the wire rope.

Kuha〉The vertical movement of the weight is done by a jack, so
Excavation efficiency can be easily increased by adjusting the hydraulic pressure of the jack.

Furthermore, if a jack stroke detector or the like is attached to the device, the height at which the weight is pushed up does not depend on the operator's control, so the vertical stroke of the weight becomes stable.

Kuni〉The vertical movement of the weight uses the guide frame as a guide, without using the drain pipe as a guide.

Therefore, it is possible to form the drain pipe using a light synthetic resin, a soft hose, or the like.

Kuho〉The crushing blade of the conglomerate member located under the weight is always in contact with or biting into the bedrock even when the weight is lifted.

Therefore, there is no room for waste to get in, so the city can be built efficiently.

In addition, since the front crushing blade is always in contact with the rock, there is little chance of damage to the front crushing blade.

[Brief explanation of drawings]

1st N: An explanatory diagram of an embodiment of the rock excavation device of the present invention Figure 2: Explanatory diagram of another embodiment of the crushing front blade Figure 3: Explanatory diagram of conventional device 24 Figure 2 Stone ♀ Yakuba

Claims (1)

[Scope of Claims] Consisting of a weight, a jack that applies a lifting force to the weight using a rock crushing member as a reaction force, and a rock crushing member located under the weight, the weight can be lifted by releasing the pressure of the jack. A rock excavation device characterized by dropping