JPH0718307B2 - Crane-vehicle with boring device - Google Patents

Description

The present invention relates to a construction vehicle equipped with a crane and a boring device, that is, a mast.

[Prior Art] Specifically, the present invention is tilted and tilted (to be tilted flat).
A mast that is freely pivoted to the upper car body through a pivot axis extending in the transverse direction, and the length is made variable by drive means (particularly a hydraulic cylinder) to define the angle of the mast. And a mast support portion including two rotatable columns (which freely rotate like a neck) acting between the two, and a crane-boring device-equipped vehicle.

Vehicles with this type of crane-boring device are used in the construction of high and deep places. The basic equipment consists, as usual, of a hydraulic drilling machine. The mast can have a length of 30 m or more. Therefore, the mast is supported by two hydraulic pivotable stanchions, and the contact points of these pivotable stanchions are arranged at a certain interval on the upper body of the vehicle with the crane-boring device. Has been done. The two rotatable columns of the mast are arranged with the other fulcrum at basically the same position in the middle part of the mast, thus forming one triangle, and the length of the base of this triangle is Corresponds to the spacing of connection points. The mast support must have not only the function of supporting the mast in its upright position, but also the function of absorbing the rotational moment generated in the mast especially in the case of a rotary boring device. For this reason,
If the length and / or rotational moment of the mast becomes too great, a corresponding length of the base of the triangle of the rotatable column is required.

[Problems to be Solved by the Invention] However, in the case where the mast is tilted forward toward its basically horizontal transfer position, in the conventional device, the rotatable support column has the mast at a certain tilt angle. And the subsequent handling of the mast is done via the auxiliary tow rope system of the crane-boring system. Therefore, it is necessary to remove the rotatable support from the mast. This is because at least one of the rotatable columns collides with the driver's cab (operating cabin) arranged between the connecting point of the rotatable columns and the pivot of the mast. In the case of a crane with a relatively short mast length and a vehicle with a boring device, as a compromise, by selecting a relatively small value for the distance between the contact points, the rotatable support column in the direction of transport of the mast is It is located in the vicinity.

It is therefore an object of the invention, in the type described at the outset, that the mast can be collapsed without releasing the pivotable column, and the triangular base of the pivotable column is basically a crane. -A crane adapted to occupy the entire width of a vehicle with a boring device-Providing a vehicle with a boring device.

[Means for Solving the Problems] According to the present invention, the object is to provide a vehicle with a crane-boring device of the type described at the beginning, in which at least one of the rotatable columns has a connecting contact point which is a pivot axis of the mast. It is solved by making it possible to move parallel to.

Therefore, the basic idea of the present invention is that the length of the base of the triangular shape of the rotatable support column is variable, and the rotatable support column is not obstructed in the operating position where the mast is raised. The base contact point of is displaced to its outermost position. When switching to the transfer position where the burden on the mast support is reduced, the connecting contacts can move inward via the vicinity of the operator's cab, so that the related rotatable columns are laid down near the operator's cab. be able to. Basically, it seems to be sufficient to make the triangular base of the rotatable column correspond to the width of the vehicle with the crane-boring device at maximum. If the load is particularly large,
It is also possible to move one or both of the contact points further outward from the device vehicle.

According to a particularly preferred embodiment of the present invention, a hydraulic cylinder is arranged as a drive mechanism (for changing the bottom length) of the base contact point of the rotatable column, and the piston of this hydraulic cylinder is
In addition to being connected to the movable articulation point, the cylinder is directly connected to the crane-boring vehicle (preferably to the articulation point of the other rotatable column).

According to a particularly simple embodiment of the construction of the invention, the movable contact points consist of a cylindrical rail on the vehicle side and a corresponding sliding piece on the column side. That is, the rail has a dual function. The rail serves as a pivot axis and as a lateral movement means. Alternatively, the pivot links of the rotatable pivots involved can be arranged on a laterally movable carriage which is connected to the rails.

To widen or narrow the bottom, a hydraulic control unit is placed between both hydraulic cylinders of the rotatable support, and this hydraulic control unit controls the length of the movable rotatable support during movement. It is preferred that the mast be kept in alignment so that the fit can be achieved while retaining bearing capacity.

Basically, it seems sufficient to movably support the connecting contact of one of the rotatable columns. Especially when it is desired that the triangular base of the swivel columns exceeds the width of the device vehicle, it may be particularly advantageous to movably support the articulating contacts of both swivel columns.

Next, the present invention will be described in more detail with reference to the drawings.

[Embodiment] FIG. 1 shows a crane-boring device-equipped vehicle 10 including a lower vehicle body 11 having a caterpillar traveling mechanism and an upper vehicle body 12 rotatably supported by the lower vehicle body. A driver's cab 13 and a drive-winch device 14 are arranged on the upper vehicle body 12.

A mast 15 is supported on the front side of the upper vehicle body 12 so as to tilt and fall freely. The mast bearing and the associated operating device are generally designated by the numeral 16. The mast bearing-actuating device 16 is actually hidden behind the driver's cab 13 arranged on the left side in the side view of FIG. 1, but is shown by a broken line for the sake of completeness. The standing operating position of the mast 15 (in this case a boring mast) is represented by a solid line and the horizontal transport position 15 'is represented by a broken line.

In the standing position, the mast 15 is supported by the mast support portion 17,
It is supported at each inclined position. The mast support 17 has two rotatable columns 18 and 19, one of which is
In the figure, it is hidden behind the other columns. Rotatable support 1
8 and 19 are connected to the mast 15 at a contact point 20 at the middle portion of the mast, and are also connected to the upper vehicle body 12 at contact points 21 and 22. The connecting points 21 and 22 are arranged side by side on the axis parallel to the pivot axis of the mast, that is, in the transverse direction of the upper vehicle body.

In the prone position 15 ′ of the mast 15, the rotatable columns 18 and 19 are
Although it is in the position represented by reference numerals 18 ', 19', it is not released from the connecting contacts 21, 22 of the upper vehicle body 12. The connecting contacts 21 and 22 are the first
As shown in the figure, it is near the driver's seat 13.

As can be seen from FIG. 2, the rotatable columns 18 and 19 form the two sides of one triangle, the bottom of which is the upper body.
It is formed by bearing members 23 on 12 (FIG. 1). The length of this base is defined by the distance between the contact points 21, 22. In the example shown, the maximum value of this interval is 12
Almost corresponds to the width of. At this position, shown by the solid line,
The lower end of the rotatable column 18 on the left side is behind the driver's seat 13.

In the plane of the drawing, the connecting contact 22 to which the left-hand rotatable column 18 belongs belongs in the plane of the drawing so that the lower end is near the side of the driver's seat 13 corresponding to the imaginary line 18 ″. (Fig.) And both of the rotatable columns 18 and 19 can be moved in parallel with the pivotal axes. When tilting the mast 15 forward in this state, the rotatable column 18 (in the position of the imaginary line 18 ″) A) can pass just beside the driver's seat 13 without being obstructed.

The movement of the contact 22 is performed via a hydraulic drive 24, and the cylinder of the hydraulic drive has a fixed contact 21.
The pistons are respectively connected to the movable contact points 22. The contact 22 is connected to the drive-winch device 14 (first
It is operated under the control from the driver's seat 13 according to the figure).

The connecting point 22 includes a cylindrical rail 26 extending in the transverse direction of the upper vehicle body, and the rail is fixed on a bearing portion 23. A hollow cylinder 28 for forming a pivot-sliding link is fitted on the rail 26, and a link 30 for receiving the rotatable column 18 is mounted on the outer surface of this hollow cylinder. ing. The axis of link 30 is the rail
Since it extends at a right angle to the axis of 26, the tilt angle of the rotatable support column 18 can be changed in conformity with sliding (that is, it forms a universal joint). Like the rotatable column 19, the rotatable column 18 is composed of a hydraulic cylinder and a piston guided therein, so that the length can be adapted by corresponding balancing of the hydraulic pressure of the hydraulic oil. .

The position-fixed connecting contact 21 is basically formed in the same manner as the connecting contact 22, but a hollow cylinder supporting the link 31.
The difference is that 29 is fixed non-slidably on the cylinder 27, which is selected to have a correspondingly short length.

FIG. 3 shows an alternative embodiment of a pivot-sliding link for the contact 22 of the left pivotable column 18. In this embodiment, a hollow cylinder 39 is movably mounted on a cylindrical guide rod 38 extending in the movement direction of the rotatable column 18 to which it belongs, and a ring-shaped end surface of the hollow cylinder 39.
The guides 40 and 41 are slidably attached to the guide rod 38. The hollow chamber of the hollow cylinder 39 has two chambers 43,44 by means of a position-fixed ring 42 connected to the guide rod 38.
It is divided into and constitutes a dual piston. Due to the axial movement of the hollow cylinder 39, the volumes of the chambers 43 and 44 are
It increases or decreases in the opposite direction.

Each of the two chambers 43, 44 is provided with a connection port 45, 46, respectively, through which hydraulic fluid can enter and drain into the chamber 43, 44.

Hydraulic oil is press-fitted into the associated chamber 43 via the connection port 45 (the hydraulic oil may flow out of the associated chamber 44 via the connection port 44 in order to balance the pressure). Can be) moved along the guide rod 38, as indicated by arrow 47, for example. When moving in the direction opposite to arrow 47, chamber 44 is used as a pressure chamber and the pressure in chamber 43 is removed via connection 45.

When the connection port 22 is formed in this way, the hollow cylinder 39 is
It is possible to move without danger of kinking on the guide rod 38 when biased by the hydraulic drive.

It is to be noted that hydraulic cylinders are preferably used as the driving means for the rotatable column and the driving mechanism for the base contact points, but mechanical type such as a screw rod or other known driving mechanisms may be used.

[Advantages of the Invention] With the configuration of the present invention (Claim 1), the two rotatable columns of the mast support portion can be installed in the vehicle allowable width without obstructing the presence of the driver seat when the mast is tilted. It can be pivoted and articulated over the entire width (or even more) apart from each other. As a result, the base of the triangle formed by the two rotatable columns becomes sufficiently long on the vehicle body, and stable holding with sufficient resistance to the rotational torque applied to the mast during boring or the lateral thrust generated during lateral swing of the mast is achieved. Will be realized. Further dependent advantages of the structure of each dependent claim
The effect is obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view of a vehicle with a crane-boring device, FIG. 2 is a side view showing a mast support portion in the direction of arrow II in FIG. 1, and FIG. 3 is a mast according to a modification. It is a detailed view showing a bearing point of the support portion. 10 …… Crane-Vehicle with boring device 15 …… Mast 18,19 …… Rotary support column 21,22 …… Connecting contact

Claims (8)

[Claims] 1. A mast tiltably and tiltably supported by an upper body via a pivot axis extending in the transverse direction thereof, and a length variable via a drive means for defining an angle of the mast. A crane-boring device-equipped vehicle, comprising: a mast support part including two rotatable columns that act between an upper vehicle body and the mast, wherein at least one of the rotatable columns ( A vehicle with a crane-boring device, characterized in that a contact point (22) of the upper body of (18) can be moved in parallel with the pivot axis of the mast (15). 2. The crane-boring system according to claim 1, wherein a hydraulic drive device is arranged between the movable contact point (22) of the rotatable column and another position fixing member. Vehicle with device. 3. The crane-boring device-equipped device according to claim 2, wherein the support to the position fixing member is a position-fixed connecting contact (21). 4. A corresponding slide piece (28) on the column side, in which the movable contact point (22) has two degrees of freedom of sliding and rotating with a cylindrical rail (26) on the upper vehicle body side. The crane according to any one of claims 1 to 3, characterized in that
Vehicle with boring device. 5. The hollow cylinder (39), wherein the movable contact point (22) includes a cylindrical guide rod (38) on the upper vehicle body side and a hollow cylinder (39) movably supported thereon. ) Is divided into two chambers (43, 44) so that the ring (42) is fixedly arranged inside the hollow cylinder (39) on the guide rod (38) to form a dual type piston. The crane-boring device-equipped vehicle according to claim 1, wherein: 6. The movable contact point (22) is arranged on a movable carriage that is locked to a rail of an upper vehicle body, according to any one of claims 1 to 5. Crane-Vehicle with boring device. 7. A hydraulic cylinder and a hydraulic control unit for the hydraulic cylinder are provided as the driving means of the rotatable support column (18, 19), and the hydraulic control unit controls the movable rotatable support column (18). 7. The crane-boring device-equipped vehicle according to any one of claims 1 to 6, wherein the length is adjusted while the support force is maintained during the movement. 8. A vehicle with a crane-boring device according to claim 1, wherein both of the contact points (21, 22) are movably supported.