JPS6317998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-propelled drilling machine equipped with wheels, and in particular, a small-sized drilling machine, which has a prime mover and a hydraulic power source device on a vehicle body equipped with the drilling machine, and Equipped with a pair of front wheels whose height can be changed respectively and a rear wheel at one location, the attitude of the machine can be adjusted according to the working conditions during drilling and the traveling conditions during traveling. .

A conventional small wheeled drilling machine is a wagon drill. A wagon drill simply has a U-shaped bar that can be lifted up and down on a body with pneumatic tires.
It is a towed vehicle equipped with a drilling machine, and is widely used for bench cutting in stone quarrying and limestone mines, as well as for dam and road construction work.

Small mobile drilling machines such as wagon drills are towed and require movement by two to four workers or other construction machinery such as bulldozers each time drilling work or blasting evacuation is required. This results in poor mobility and reduced work efficiency.

Some models have a small engine or air motor mechanically connected to the steering wheels to enable self-propulsion, but these are insufficient for traveling on rough terrain.

With the advent of hydraulic rock drills, medium- and large-sized drilling machines such as hydraulic crawler drills or rotary drills have come into use, but they have the drawback of being expensive for small-scale drilling work.

In addition, when drilling with conventional leg drills, etc., workers are exposed to shock vibrations, so it is desired to improve the working environment. The advent of a drilling machine is desired.

This invention specifically solves these problems with small drilling machines.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drilling machine equipped with wheels and capable of self-propelled driving, and an object of the present invention is to provide a drilling machine that is equipped with wheels and can move on its own.It is also an object of the present invention to provide a drilling machine that is capable of adjusting its drilling posture and running posture by means of a height-variable, three-point supported vehicle body structure. It is an object of the present invention to provide a machine that can run on uneven ground and is maneuverable.A further object of the present invention is to provide a machine that can improve the overall efficiency of drilling operations. be.

That is, in the present invention, as in the illustrated embodiment, drive wheels are provided at the tips of a pair of support legs 2 which are pivotably mounted on the front part of a vehicle body 1 so as to be able to move up and down, respectively, to form front wheels 3.
At the rear of the vehicle, a wheel is provided at the tip of the supporting leg 6 to serve as a rear wheel 5, a punching machine 10 is provided on the vehicle body 1, and a prime mover 15 and a hydraulic power source device 16 are provided to form a self-propelled vehicle. This invention relates to a wheel-type drilling machine characterized by:

Embodiments of the invention will be described with reference to the drawings.
FIG. 1 shows a side view of the drilling machine according to the present invention.
FIG. 2 shows the plane. A pair of left and right supporting legs 2 are pivotally attached to the front part of the vehicle body 1, and the supporting legs 2 are attached to the vehicle body 1.
Driving wheels are provided at the ends extending forward, and these form a pair of front wheels 3. Support leg 2
are pivotally connected to the vehicle body 1 with hydraulic cylinders 4 interposed therebetween, making them capable of being raised and raised.

At the rear of the vehicle body 1, there is a vertical rear support leg 6 for the rear wheel 5, which can extend and contract vertically with respect to the vehicle body 1. In this embodiment, a double-row rear wheel 5 and a hydraulic cylinder 7 are provided at the tip of the rear supporting leg 6 to form a steering wheel. Furthermore, an outrigger 8 is provided at the tip of the rear support leg 6, and is used to maintain stability of the machine body during drilling.

A relatively short boom 9 is pivoted to the front of the vehicle body 1 as a working device, and a guide shell 11 on which a drilling machine 10 is mounted is attached to the tip of the boom 9. The boom 9 is pivotally attached to the vehicle body 1 with a hydraulic cylinder 12 for elevating and a hydraulic cylinder 13 for turning, so that it can be elevated and turned. The drilling machine 10 carries a rod 14 and is movable back and forth along the guide shell to perform drilling.

Further, on the vehicle body 1, a prime mover 15, a hydraulic power source device 16 driven by the prime mover 15, a driver's seat 17, etc. are arranged.

Figure 3 shows the hydraulic circuit of the drilling machine. Hydraulic pumps 20, 21, and 22 are all connected to and driven by prime mover 15, suck up hydraulic oil from oil tank 19 to create pressure oil, and supply it to each actuator to provide driving force.

The hydraulic pump 20 is a striking device 2 of the drilling machine 10.
3. Hydraulic cylinder for front wheel elevation 4, Hydraulic cylinder for rear leg extension and contraction 24, Hydraulic cylinder for outriggers 2
5. Operation valves 26, 27, 2 for sending pressure oil to the steering hydraulic cylinder 7 and working devices such as a boom.
8, 29, 30, and 31 are provided and are operated by switching the respective valves. Of these, 30 operation valves
is a throttle switching valve, which is operated by the steering handle 32, changes the direction of the rear wheels 5 via the steering hydraulic cylinder 7 in proportion to the rotation angle of the steering wheel 32, and steers the vehicle. Let's do it. Moreover, the operation valve 31 shown by the chain line is for use with other working tools.

Next, the hydraulic pump 21 is provided with operating valves 35 and 38 in order to send pressure oil to a hydraulic motor 33 for driving one front wheel and a feeding hydraulic cylinder 35 of the drilling machine 10. It is then manipulated.

Similarly, the hydraulic pump 22 is provided with operating valves 37 and 39 in order to send pressure oil to the other front wheel drive hydraulic motor 34 and the rotating hydraulic motor 40 of the drilling machine 10, and the respective valves are switched. It is then manipulated.

Among the operating valves, the operating valve 26 is a two-position switching valve that switches the operation of the impact device 23 of the drilling machine 10. A variable relief valve 41 is connected to the striking circuit and controls the striking device 23.

42 indicates a pilot operated check valve inserted into the hydraulic cylinder 4, 24, and 25 circuits, and 43 indicates a lock switching valve inserted between the two elevation hydraulic cylinders 4, which prevent the machine from swinging during drilling. It plays the role of locking the 44, 45, and 46 are relief valves connected to the discharge pipes of the hydraulic pumps 20, 21, and 22, respectively.

In the above configuration, the vehicle can be driven by driving the hydraulic motors 33 and 34 built into the pair of front wheels 3, and the rear wheels 5 can be steered by operating the steering handle 32. Can be done.

The body is supported at three points by a pair of front wheels 3 and one rear wheel 5, and can cope with running on rough terrain.

When drilling a hole, the hydraulic cylinder 4 gives a depression angle to the support leg 2 to push down the front wheel 3, and the hydraulic cylinder 2
4 by extending the rear supporting legs 6 and pushing down the rear wheels 5, the height of the machine body can be raised to the position shown by the chain line in FIG. 1, allowing drilling at high positions.

Furthermore, by changing the heights of the front wheels 3 and rear wheels 5, diagonal drilling can be accommodated. During drilling, the hydraulic cylinder 4 of the front wheel 3 is fixed by the lock switching valve 43, and the outrigger 8 is grounded by the hydraulic cylinder 25, thereby stabilizing the machine body.

As is clear from the above description, the present invention has the following effects.

(a) Instead of a conventional mobile drilling machine such as a wagon drill, a small and lightweight wheel-type drilling machine capable of self-propelled on rough terrain, similar to a crawler drill, can be obtained.

(b) Since it has drive wheels on support legs that can be lifted up and down, it can travel on uneven ground, and since the driver rides on the vehicle, the work effort is greatly reduced compared to leg drills and the like.

(c) By combining the elevation of the front wheel support leg with the extension and contraction of the rear wheel support leg, an appropriate posture can be taken for traveling and drilling in special terrain, and safe work can be performed.

(d) Since the vehicle body can be lifted high by the support legs of the front and rear wheels, it is possible to drill at relatively high places compared to a wagon drill without having to lengthen the boom for the drilling machine or provide an extension/contraction mechanism.

(e) Since the hydraulic drilling machine is operated by a built-in hydraulic power source, efficiency can be improved compared to conventional pneumatic drilling machines that do not have a pressure source.

(f) In addition to having higher drilling efficiency than conventional hand-held drilling machines such as leg drills, the machine is operated remotely so that the operator does not have to directly hold the drilling machine, eliminating the problem of vibration disturbances for the worker.

[Brief explanation of the drawing]

FIG. 1 is a side view of the drilling machine according to the invention, FIG. 2 is a plan view thereof, and FIG. 3 is a hydraulic circuit diagram. In the figure, 1 is the vehicle body, 2 is the support leg, 3 is the front wheel, 5 is the rear wheel, 6 is the rear support leg, 10 is the drilling machine, 15 is the prime mover,
16 is a hydraulic power source device.

Claims (1)

[Scope of Claims] 1. Drive wheels are provided at the tips of a pair of support legs pivotably mounted on the front part of the vehicle body so that they can be lifted up and down, respectively, to serve as the front wheels, and wheels are provided at the tips of the support legs at the rear of the vehicle body to serve as the rear wheels. 1. A wheel-type drilling machine, which is equipped with a drilling machine on a vehicle body, and is also equipped with a prime mover and a hydraulic power source to form a self-propelled vehicle. 2. The wheel-type drilling machine according to claim 1, wherein the support leg of the rear wheel is vertically extendable and retractable. 3. The wheeled drilling machine according to claim 1, wherein the rear wheel is a steering wheel.