JPS6321766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of civil engineering working machines, and its purpose is to provide a civil engineering working machine that can perform two types of work continuously with one civil engineering working machine. There is a particular thing.

In general, civil engineering work often involves a combination of two or more types of work. For example, in quarrying operations, rock drilling and excavation operations are performed in combination. Furthermore, in the demolition work of structures such as buildings, the work of crushing reinforced concrete and the work of processing crushed concrete blocks are performed in combination.

However, civil engineering work machines are often made as dedicated machines for various types of work, such as excavators and rock drills. Therefore, when two types of work are performed in combination as mentioned above, for example, when rock drilling work and excavation work are performed consecutively in quarrying work, a rock drilling machine and an excavator must be prepared. Must be.

However, using a dedicated machine for each task not only increases equipment costs and personnel costs, but also does not provide efficient work.

In particular, the above-mentioned work inefficiency is particularly noticeable in work sites where the work space is restricted, such as road repair work in an alley.

The following two methods have been attempted to resolve the above-mentioned inconveniences.

One method is to prepare a plurality of work machines as attachments and replace the work machines according to each task.

However, in the case of methods such as levers, where multiple work machines are prepared as attachments and used interchangeably depending on the work, there is no need to prepare dedicated machines for each type of work, so sufficient work space is required as described above. Although the advantage of this method is that it allows work to be carried out at work sites where it is difficult to obtain the desired conditions, it has a disadvantage in that the work equipment must be replaced in response to changes in the work, and the replacement work is troublesome.

Another method is to provide one civil engineering work machine with a plurality of booms and attach a work machine to each boom.

However, the method of installing multiple booms like the lever has the advantage that it does not require replacing the work equipment for each work like the above method, but on the other hand, having multiple booms makes it easier to carry out civil engineering work. This method has disadvantages in that the cost of the machine is high and that the workability is reduced, for example, because the turning direction is restricted during turning work.

The present invention is an attempt to improve the conventional situation against the background of the above-mentioned conventional situation.

That is, the present invention is capable of performing two types of work in succession with one civil engineering work machine by reversibly installing two types of work machines at the tip of the boom. The main feature of the present invention is that a fork is formed at the tip of the boom, and a stick boom with two types of work equipment attached to both ends of the fork is rotatable in the vertical direction. One end of a link arm formed in an approximately semicircular arc shape is pivotally connected to the vicinity of the tip of the fork, and the other end is pivotally connected to the stick boom via an auxiliary arm. A hydraulic mechanism is interposed between the bottom portion of the arm and a portion near the base of the boom, and the step boom is rotated in the vertical direction through the expansion and contraction action of the hydraulic mechanism.

Specific embodiments of the present invention will be described below with reference to illustrative drawings. In each of the drawings shown in FIGS. 1 to 6, reference numeral 1 indicates the main body of the civil engineering work machine. Same body 1
consists of a running section 2 formed by a crawler track 2' and an underframe section 3 that is rotatably provided with respect to the running section 2, and the underframe section 3 has a driver's cab 3a and a driving chamber 3b.
will be provided. A boom 4 is provided on the frame portion 3 via a hydraulic mechanism 5 so as to be freely rotatable in the vertical direction. A fork 6 is formed at the tip of the boom 4, and a stick boom 7 is rotatably provided on the fork 6. That is, a support shaft 8 is horizontally suspended between the left and right support frames 6', 6' constituting the forked portion 6, and the intermediate portion of the stick boom 7 is rotatably supported on the support shaft 8. A rock drill 9 is attached to one end of the stake boom 7, and a bucket 10 is attached to the other end as attachments. The bucket cart 10 is rotatably provided via a hydraulic mechanism 11 whose bottom portion is pivotally connected to the stake boom 7.

One ends of link arms 12, 12 formed in a substantially semicircular arc shape are pivotally connected to left and right support frame portions 6', 6' constituting the forked portion 6. The link arms 12, 12 are
It is provided so as to be freely rotatable in the vertical direction via a hydraulic mechanism 13 whose bottom portion is pivotally connected to both support frame portions 6', 6'. Auxiliary arms 12', 12' are pivotally connected to the other ends of both the link arms 12, 12, and the tips of both the auxiliary arms 12', 12' are pivotally connected to the side wall of the stake boom 7. The same joints are shown in Figures 1 and 2.
As shown in the figure, it is located forward of the fork 6. Further, a rock drill 9 attached to one end of the stake boom 7 is provided so as to be able to pass through the inside of the fork 6.

In the above embodiment, a rock drill 9 and a bucket 10 are attached as work equipment attachments attached to both ends of the stake boom 7, but the work equipment is limited to the bucket 10 and the rock drill 9. Instead, it is possible to attach other working machines in appropriate combinations.

Next, its effect will be explained. 1 and 2 are drawings showing a state in which the bucket cart 10 is protruded toward the tip of the boom 4 through the reversing action of the stake boom 7 in order to carry out excavation work via the bucket cart 10. In the state shown in the drawings, the boom 4 is rotated vertically via the hydraulic mechanism 5, the stick boom 7 is rotated via the hydraulic mechanism 13, and the bucket 10 is rotated via the hydraulic mechanism 11. By doing so, excavation work as shown in FIG. 4 can be obtained.

Furthermore, from the state in which the bucket belt 10 protrudes toward the tip of the boom 4 as shown in FIGS. 1 and 2, the stick boom 7 is moved counterclockwise through the hydraulic mechanism 13 in the state shown in FIG. That is, by rotating the bucket 10 in a direction in which it overlaps the upper side of the boom 4, a state in which the rock drill 9 protrudes toward the tip of the boom 4 is obtained. In this state where the rock drill 9 protrudes toward the tip of the boom 4, the boom 4 is rotated in the vertical direction via the hydraulic mechanism 5, and the hydraulic mechanism 1
By appropriately rotating the stake boom 7 via the shaft 3, rock drilling conditions as shown in FIGS. 5 and 6 can be obtained.

Then, by rotating the stick boom 7 from the state shown in FIGS. 1 and 2 in the clockwise direction, that is, in the direction in which the bucket 10 is rolled under the boom 4, as shown in FIG. The folded state shown in is obtained.

That is, as shown in Fig. 6, the bucket 10 is connected to the boom 4.
From the overlapping state, the stake boom 4 can be rotated through approximately 270 degrees until the bucket belt 10 is wrapped around the bottom of the boom 4 as shown in FIG.

The present invention is constructed as described above, and includes:
A stick boom is mounted on a forked part formed at the tip of the boom so that it can rotate freely in the vertical direction, and two types of work equipment are attached to both ends of the stick boom. One end of a link arm formed in a substantially semicircular arc shape is pivotally connected, and the other end is pivotally connected to the above-mentioned stick boom via an auxiliary arm, and a hydraulic mechanism is installed between the bottom of the link arm and a portion near the base of the boom. interposed,
By rotating the stick boom in the vertical direction through the expansion and contraction of the hydraulic mechanism, two types of related work, such as rock drilling and excavation work, can be performed continuously with one work machine. This has led to a significant improvement in work efficiency.

In addition, in the present invention, by providing two types of work machines so that they can be rotated freely as described above, the work can be performed with one civil engineering work machine in a work environment where work space is limited. We have now succeeded in improving the workability. In addition, in the present invention, one civil engineering work machine can carry out two
By being able to perform various types of work, it is possible to reduce equipment costs and personnel costs.
We have now been able to improve its economic effects.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the civil engineering work machine according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a side view of the same showing the folded state, FIG. 4 is a side view showing the excavating work state, and FIG.
FIG. 6 is a side view showing the state of rock drilling work. DESCRIPTION OF SYMBOLS 1...Main body, 2...Traveling part, 2'...Crawler track, 3...Underframe part, 3a...Driver's cab, 3b...Drive room, 4...Boom,
5... Hydraulic mechanism, 6... Fork part, 6'... Support frame part, 7
...Stake boom, 8...Spindle, 9...Rock drill, 1
0...bucket, 11...hydraulic mechanism, 12...link arm, 12'...auxiliary arm, 13...hydraulic mechanism.

Claims (1)

[Claims] 1. A stick boom is pivoted on a fork formed at the tip of the boom so that it can rotate freely in the vertical direction, and two types of work equipment are attached to both ends of the stick boom, while a stick boom is mounted near the tip of the fork. One end of the link arm curved into a substantially semicircular arc shape is pivotally connected, the other end is pivotally connected to the stake boom via an auxiliary arm, and a hydraulic mechanism is provided between the base portion of the boom and the bottom portion of the link arm. A civil engineering work machine that is telescopically installed.