JPS5980892A - 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 The present invention relates to a rock drilling device used for excavating mines, tunnels, etc.

Traditionally, in mines and tunnel construction, gunpowder charge 'ILJ
VC when drilling holes for inserting roof bolts etc.
The leg drill or rock jumbo was most commonly used.

As shown in FIG. 1, the leg drill is a system in which the counter-driving rock 2 is supported by telescopic legs, and the inner metal of the bistol leg 11 is attached to the leg drill through the leg attachment part 10 installed on the lower abdomen of the drilling rock 2. The piston leg 11 is pushed up when the passed air fills the 7/Dare sog 12, and mechanically, the force acting on the piston leg 11 in the pushing up direction (direction A) l/c is < By adding the weight of Iwatsuki 2 (in the direction of the mouth), a thrust force is exerted in the direction of the rod 1 (in the direction of C).

This leg drill method has a total weight of about 30 to 40 kg, and can be easily transported and carried by one worker even in a small work area.
It was widely used due to its advantages such as easy installation.

However, one operator is required for one Iwatsuki drilling machine, which is not only inefficient, but also causes vibration and noise caused by the impact of the Iwatsuki drilling machine. Since operators are directly affected by this, problems related to occupational disease control such as vibration disorders have been given a lot of attention.

In contrast, the Iwa Jumbo was moved and propelled by mechanical operation F, and the operator il''j
The leg drill method vLc allows operation in a position that is not directly affected by the impact vibration and impact noise of rock drilling, and also allows one operator to operate two or more rock drilling machines.
There are some advantages that other companies do not have. As shown in Fig. 2, the rock drilling method of this rock drilling jumbo has 15 guide cells mounted on the tip of the boom 14, and the top of the guide cells 15 is Thrust to slide VCX Tsutezaku Iwatsuki 2? It was meant to be granted. More specifically, the rod 1 is placed so as to be slidable in the length direction of the guide cell 15, and the rod 1 is passed through the hole of the rod holder 16 provided at the tip of the guide cell 15. The entire Iwatsuki 2 and rod 1 can slide in the axial direction of the guide cell 15. Inside 1/ of guide cell 15
A screw bolt 17 with a spiral groove is rotatably fitted between the front and rear ends of the guide cell,
When this screw bolt 17 is passed through the spiral groove 18 made in the drilling rock 2, when the screw bolt 17 is rotated, the whole drilling rock 2 and the rod 1 are moved against the guide cell 15. The upper part of the seven can be slid relative to each other. The rotation of the screw bolt 17 is performed by the forward/reverse rotation of the motor in the case of a jack/bow, and the movement of the boom 14 and the turning movement of the guide cell 15 are performed by hydraulic pressure and the drive tc. ing.

However, in the case of the Sakuiwa Jumbo, the guide cell 15 and the accompanying mechanical elements can be installed at the tip of the boom 14, resulting in a heavy load, which inevitably increases the size of the entire device. . For this reason, it had the disadvantage that it could not be applied to small cross-section troughs and pit rocks, and the cost of the entire device was extremely high.

The present invention has been developed with the entire purpose of solving the problems of the conventional Ja/Boza (Iwatsuki) while incorporating the advantages of the leg drill method. By completely eliminating the transfer mechanism, we succeeded in significantly reducing the size of the device.

As shown in the embodiments of the drawings, the winding device of the present invention includes:
A rock rock 2 having a function of applying rotational force and/or impact force to the rock rod 1, a rock rock mount 3 for firmly holding the rock rock 2, and a cylinder 4 fixedly attached to the rock rock mount 3. , this cylinder 4VC,l: reciprocates in the coaxial direction with the rock drilling rod 1, has a rod holding part 5 fixed at its tip, a piston 6, and a telescopic boom 7, and has a piston 6 and a telescopic boom 7 at its tip. G < The Iwatsuki mount 3 includes a boom 7 for supporting the Iwatsuki mount 3 so that it can swing freely within one plane including the boom shaft, a means for imparting telescopic movement to the boom 7, and a means for imparting tilting movement to the boom 7. The rock drilling rod 1 propulsion and retraction movement mechanism consisting of the oscillation motion imparting means, and all of the above-mentioned member lifting mechanisms are further provided by the VC.
It includes a self-propelled vehicle body for loading.

The detailed structure and operation of the device of the present invention will be specifically explained below with reference to the drawings.

FIG. 3 shows a structure for attaching a dowel to a base body 8 installed on a self-propelled vehicle body.

The base body 8 itself is installed horizontally on the self-propelled vehicle body (the horizontal angle of -t can be adjusted slightly as described later). 6th
In the figure, the base body 8 is horizontal < 6. For convenience of explanation, the 2z horizontal axis coaxial with the base body 8, the horizontal axis '2x horizontal axis orthogonal to this Z horizontal axis, and the vertical axis are referred to as the Y vertical axis. In other words (Figure 4), Figure 3 shows one rest position of each member, with the base body 8 in the Z-horizontal axis direction, the stand 9 in the Y-vertical axis direction, and the boom 7 in the Y-vertical axis and the Z-horizontal axis. Within Kanakuramu plane,
The rod 1 of the rock drill 2 is shown in a stationary state in the Z horizontal axis direction vc-7C. The following description will be made using this rest position as a reference.

It is equipped with the function of applying rotational force to the drilling rock rod 1 and the full impact force, and is the same model as the one used in the leg drill method described above. Even though it applies striking force, it does not mean that the rod 1 moves relative to the swinging Iwatsuki 2 and greatly propels or retreats in the excavation direction, but rather that it propels and retreats the Iwatsuki 2 and the rod 1 integrally. It is something. The Zagu Iwatsuki 2 is fixed on the Zagu Iwatsuki frame 6. In this respect, it is fundamentally different from the rock-rock jumbo, which is slidably installed on the guide cell. These six mounts do not need to be as long as the guide cells, and only need to be long enough to fix the drilling rock 2. A cylinder-piston is attached to this frame 5, which receives the rod 1 in advance and assists in counterboring and rod pulling-out operations.

That is, the cylinder 4 is fixed inside the frame B in the same direction as the rod 1, and the VC piston 6 of the cylinder 4 is attached so as to reciprocate in the same direction as the rod 1.

Compressed air is introduced into the cylinder 4, and the piston 6 is moved in translation with the introduction of this pressure m air VcJ:Rerod 1,
This release of compressed air allows the piston 6 to move freely due to external pressure. A rod holding part 5 is fixedly installed at the tip of the piston B, and the rod 1 passes through a hole in the rod holding part 5 and is slidably received first. This rod holding part is placed in the vicinity of the bedrock or in the contact position (
(The work movements will be explained later).

Drilling Iwatsuki 2, Rod 1, Drilling Iwatsuki stand 3, / Linder 4
The four elements are fixed to each other and will move together, but when compressed air is introduced or released into /su/goo 4, screw I / /6 moves in translation with respect to lot 1. or it will be placed in a translationally movable state VCit. However, the members above this including the frame 6 are fixed to each other except that when the rod 1 is on the Z-horizontal axis F, the piston 6 reciprocates along the Z-horizontal axis.

A pin-jointed FJ is attached to the tip of this 6-piece Iwatsuki mount 7.
It is supported so that it can swing up and down. Boom 7 is outer boom 7a
It consists of an inner boom 7b completely inserted into the outer boom 7a, and is attached to the pedestal 6 at the tip of the inner boom 7b. Its mounting structure is such that the pedestal 5 is in one groove containing the boom shaft (
In the case of Fig. 3, the structure is such that it can swing freely in the plane including the Y vertical axis and the Z horizontal axis, and the total load of the members above it, including the frame 3, is almost the same on the concrete VC. A pin joint 20 is made at the bottom of the gantry supported near the center of gravity, and a pin joint 21 is also made at the front bottom of the gantry A.
The tip of the capiston 22 is designed to make a complete joint. The piston 22 reciprocates in a cylinder 24 whose bottom is supported by a rod 23 projecting downward from the tip of the inner boom 7b. Hydraulic pressure is introduced into the cylinder 24, and when the C repeater cylinder 22 starts to extend,
The pedestal 3 rotates upward in a plane including the Y vertical axis and the Z horizontal axis around the 20 pin joints, and can freely rotate in this plane when the hydraulic pressure is released. As the pedestal A rotates, the rod 1 also rotates within this plane.

As mentioned above, the boom 7 consists of an outer boom 7a and an inner boom 7b. The air motor 25 is driven to extend and retract the inner boom 7b relative to the outer boom 7avC. Although not shown, a slit along the longitudinal direction is formed in the side wall of the outer boom 7a, and a slit is formed along the longitudinal direction of the outer boom 7b.
A protrusion provided on the lower side wall of the back IC slides into this slit.

It is. First, the slit key groove of the outer boom 7a and the protrusion of the inner boom 7b act as a movable key within the key groove. The air motor 25 is driven by R and 1. Pass the endless chain 26 along the key groove of the drive a outer boom 7a, and
The key is locked in one side loop of chain 26, and this chain 26 is rotated by air motor 25 l/7.
-J: From this l/c-, the key (protrusion) of the inner boom 7b slides completely inside the outer boom 7a key 6 groove (slit), and as a result, the inner boom 7a moves to the outer boom 7bK.
The boom moves in the axial direction by extending and retracting.

The lower end of the boom 7 (actually the lower end of the outer boom 7a) is supported by a pin connection to the lower part of the stand 9. This pin connection allows the boom 7 to swing in a plane that includes the axis of the stand 9 (in the case of Fig. 3, the Y vertical axis) and the axis of the base body 8 (in the case of Fig. 3, the Z horizontal axis). In other words, the method of joining is adopted,
The pin joint 27 is formed so that the angle of inclination with respect to the stand 9F changes. - 10,000, between the top of the stand 9 and the middle part of the outer boom 7a, the cylinder 28 and the piston 2
9 is extended across each tip through a slide 60 and a slide 31, and by introducing and releasing cylinder 281/i1m oil pressure, the entire boom 7 is swung on the above-mentioned inner surface, This allows it to stop at a predetermined angular position.

Next, the mounting structure of the stand 9 to the base body 8 will be explained. Based on the basic principle, in terms of the XYZ directions in Figure 4, if stand 9iZ stands upright in a direction perpendicular to the horizontal axis and can rotate around two horizontal axes, it can also slide in the direction along the horizontal axes E and Z. It is in installation. In the illustrated embodiment, for this purpose, the base body 81-t has a base guide 32 and a base plate 6 that slides on the base guide 32.
3 and the bearings 64 and 35 (bearing 3
5 is not visible in Figure 6 but visible in Figures 6 and 7) is provided upright, and the lower end of stand 9 is joined to horizontal shaft 3 which is rotatably supported by bearing 34.351C. . The horizontal axis 36UZ is in the horizontal axis direction. Therefore, when this horizontal axis is rotated, the stand 9 rotates around the Z horizontal axis. This rotation is performed using hydraulically driven torque actuators 37Vc and 37J installed behind the bearing 55. This will be explained according to FIGS. 5 and 6. This torque actuator 371-j consists of a pinion and a rank installed on the back f of a bearing 65 (FIGS. 6 and 7) so as to move integrally with the base plate 33. That is, a pinion gear 39 is attached to the extension shaft of the horizontal shaft 36, and the pinion gear 39 is rotated by the reciprocating motion of the rack gear 4o, which is threaded into engagement with the pinion gear 39. The rack gear 40 is housed in the id/IJ cylinder 41, and hydraulic pressure is supplied to the cylinder 41, so that by adjusting the hydraulic pressure, the rank gear 40 can move the piston and stop at any position.

The base plate 66 is attached to the base guide 62 so as to support the entire weight of the boom 7 and the entire load applied thereto, as well as the weight of the stand 9 and the torque actuator 67, and to be able to slide in the Z horizontal axis direction in this state. . As shown in FIG. 6, the base guide 32 has two guide plates formed on a hollow base body 42 with key grooves on all sides parallel to each other, and a base plate 6 in both key grooves.
Both edges of 5 are inserted. The sliding movement of the base plate 66 with respect to the base guide 62 is caused by the hydraulic cylinder 43 installed inside the hollow base body 42 and its piston 44.
It is done by d. That is, as shown in FIG. 7, the head of a piston 440 is joined to a protrusion 45 projecting below the base plate 33, and this piston 44 is caused to reciprocate by a hydraulic cylinder 43 fixed to the hollow base body 42. In particular, the base plate 36 reciprocates along the base guide 62 and is stopped at a predetermined position. In addition, the horizontal angle can be adjusted by the hollow base body 421d and the cylinder 46 shown in FIG. 48, one set or two sets are placed.

The rock drilling operation of the rock drilling device of the present invention constructed as described above will be explained next.

Unfortunately, the direction in which the rock is to be drilled is the rod 1 shown in Figure 6.
Assume that the direction is , and the self-propelled vehicle is stopped at that rock drilling position. This is a counterboring operation (cutting into the rock), and in order to bring the rod holding part 5' as close to the rock as possible, compressed air is supplied to the cylinder/dar 4 to extend the piston 6, and in this state Drive Iwatsuki 2 by 1 inch, which maintains the entire device. As a result, the rod 1 is supported by the mouth/edge holding portion 5 at a position close to the tip of the shaft, preventing the rod tip from wobbling during counterboring, and ensuring its positioning. When the tip of the rod 1 is completely held within the rock by this counterbore VC, the next VC scooping rock propulsion operation begins. In this case, the hydraulic pressure of the cylinders 24 and 28 is released, and the rock drill 2 is driven while the air motor 25 is fully rotated appropriately.

This IcJ: This is exactly the same principle as the conventional leg drill method, and the direction of (A) in Figure 1 is the inner boom 7b.
As the rod 1 begins to extend, a propulsive force in the direction (c) is applied to the rod 1 as a result of both the weight of the rod (i) including the boom, and the self-weight of the device on the lift (l). Rock drilling progresses in the axial direction. In this case, the 1-inch lot 1 that is in contact with the rock mass is propelled by the rod holding part 5. Next, after rock drilling for a predetermined distance is completed, a pulling operation begins. At the end of the rock, there is a state 1/'c where the piston 6 has entered the cylinder 4 considerably, and in this state, if Nori Cedar 4VC compressed air is supplied and the 6 pistons are pushed out, the rod holding part 5 will push the rock V ?:, and as a result of the reaction force, the rod 1 is pulled out from the bedrock.In this case, the air motor 25
The case where the drilling position is changed from the position shown in FIG. 5, in which the inner boom 7bid naturally retracts into the outer boom 7a by depressurizing the air will be described. Sunzu,
When changing the drilling position in the plane including the Y vertical axis and the Z horizontal axis from the position shown in Fig. 3, cylinder 24 and cylinder 2
The rod 1 can be directed to a predetermined position and direction by adjusting the hydraulic pressure to 8, and the rod 1 is at a constant 1t''L in the drilling position #.
For example, it is sufficient to carry out all of the above-mentioned counterboring operations while maintaining the apparatus in that state, and then perform the counter-rock thrusting operation and pulling-out operation in the same manner as described above. Figure 7 shows all the two typical positions in this case, but the drilling direction is determined so that the direction of the 10th dot 1 and the direction of the boom 7 match, as in the bottom position of this figure. In this case, the weight of the device cannot be used as the rock drilling driving force, and the driving force of the linear motor 25 due to the extension of the boom 7 is used as the rock drilling driving force. Next, when rotating the rod 1 instead of the Z horizontal axis, the cylinder 4 of the torque actuator Chige-Yu 57
1, the horizontal shaft 56 supporting the nine stands is fully rotated, and fixed at a predetermined position as shown in FIG. 8 (adjust to the oil pressure at that position).

Then, the above-mentioned spot boring, propulsion, and retreat operations may be performed.

In this way, rock can be drilled at any position and direction in the front hemisphere above the floor. When installing this device in two sets of self-propelled vehicle bodies 1c,
All you have to do is to have each group share the rock drilling spot on the left and right hemispheres of the front hemisphere on the floor. When drilling downward in the front of the vehicle body, the base body 8 is tilted slightly forward and downward. This tilting is performed by adjusting the hydraulic pressure of the cylinder 46.

In a typical scale of an actual machine, the total length of the vehicle when running with one rock rod removed is approximately 6.3 m, and the total weight of the two-bram system is approximately 1.6 tons. In addition, compared to the conventional rock drilling jumbo (2-boom mobile) VC-, which has a total length of approximately 7.5 to 12 m and a total weight of 6 to 20 tons, this shows that it was possible to construct an extremely small-scale device. The cost of the equipment is significantly lower, and it can be operated freely to excavate small diameter tunnels, which was impossible with conventional jumbo machines. It also reduces operating motion and operating power compared to the guide cell method, making it easier to use conventional mechanization. The present invention provides a very useful device as a small-scale tunnel (shaft) excavation machine that has been desired.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing a conventional rock-drilling system using a rock-drilling mechanism; Fig. 2 is a partially cut-away side view of a guide cell section showing the principle of rock-drilling using a conventional rock-drilling jumbo;
Figure 6a is a schematic perspective view showing the main structure of the rock drilling device of the present invention, Figure 4 is a directional diagram for fully explaining the direction of each element in Figure 3, and Figure 5 is a perspective view of the lower part of the stand. 7 and 6 are diagrams showing the principle of the torque actuator, FIG. 7 is a schematic side view of the entire device of the present invention, and FIG. 8 is a schematic side view of the entire device of the present invention. 1... Rock drilling rod, 2... Rock drilling rock, 3. Rock drilling mount, 4. Cylinder, 5... Rod holding part, 6
...Piston, 7.Boom, 8.Base body, 9.Stand, 25.Air motor, 24.
28.43.46...Hydraulic cylinder, 67...Torque actuator, 47...1 self-propelled vehicle. Applicant Dowa Mining Co., Ltd. Figure 1 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] A rod equipped with the function of imparting full rotational force and/or impact force to the rock drilling rod 1, a rock drilling 2, a rock drilling mount 6 that fully supports the rock drilling rod 1, and a cylinder 4 fixed to the rock drilling mount 6. , a piston 6 which reciprocates in the coaxial direction f with the rock rod 1 by this cylinder 4 and has a rond holding part 5 fixed to its tip, and a telescopic boom 7, which supports the rock drilling mount 3 at its tip. Boom shaft? A boom 7 for supporting the boom 7 so as to be swingable in one plane, a means for imparting telescopic movement to the boom 7, a means for imparting a tilting movement to the boom 7, and a means for imparting an oscillating movement to the σIwatsuki frame 6. Propulsion and retraction movement mechanism of rod 1;
All of the above mentioned parts and mechanisms? A rock drilling device consisting of a self-propelled vehicle body that is loaded on top of it.