JPS6332956B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tower device for a reverse circulation drill.

(Prior Art) The present applicant has already applied for the tower device shown in Figs. 1 to 3 as Japanese Patent Application No. 169441/1983
It was published as Japanese Patent Application Publication No. 58-73689. In this turret device, a turret 24 with an open side for hanging a drill pipe 41 is connected to a base frame 20 on the ground with pins 22 and 23, and is erected, and the drill pipe 41 can pass through the top of the turret 24. , and a pulley block 35a on which a transverse beam 48 having two parallel beams 54, 54 with openings on the sides for suspending the drill pipe 41 is attached, and from which a hook block 37 for suspending the additional drill pipe 41 is suspended.
Rollers 72 attached to both the front and rear sides of each of the trolleys 35 and 36 roll the trolley 35 with a pulley block 36a and the trolley 36 with a pulley block 36a from which a hook lock 38 supporting the excavating tool 25 is suspended, on the rail 53 of the transverse beam 48. Winches 31 and 32 are installed at the rear of the turret 24 for winding and unwinding the ropes 31a and 32a wound around the pulley blocks 35a and 36a, respectively. Trolley 35, 36
A space is provided in which the excavation center can be evacuated from above the center of the excavation.

Note that 27 is a spider that supports the excavation tool 25 before the rotary table 21 is installed;
This is the left and right beams 20 of the base frame 20
It consists of a two-part body that can be moved back and forth along a rail 20c provided on the rails 20c and 20b. It is configured so that it can receive the flange of the drill pipe 41, etc. when it is in its closest position. The rotary table 21 is attached to a mounting base 20e installed on the front and rear beams 20b of the base frame 20 using bolts 60.
The drilling tool 2 is fixed in the center.
A turntable 21a having a hole for engaging with the Kelly bar 43 of No. 5 is rotatably mounted via a bearing, and the turntable 21a is mounted inside.
A drive device (not shown) that rotates the excavator 25 together with the excavator 25 is housed therein. 26 is a jack for leveling the turret 24.

The excavation tool 25 is connected to the turntable 21a.
A kelly bar 43 is fitted into a square hole at the center so as to be movable up and down, and the kelly bar 43 and suction hose 44
A swivel joint 42 connects the swivel joint 42, a large number of drill pipes 41 are connected by bolts to a portion (not shown) at the lower end of the kely bar 43, a drilling bit, a stabilizer (not shown), etc. are connected to the bottom drill pipe, and the like. Consisting of

On the left and right sides of the swivel joint 42, there are upper and lower rollers 51a and 51b at both ends, as shown in FIG.
Attach the swivel support 50 with the turret 24.
Vertical guide 52 attached to the inner wall of the front pillars 46, 47 of
By mounting the rollers 51a and 51b so as to be able to roll along the rollers 51a and 52b, rotation of the swivel joint 42 is prevented and the center of the swivel joint 42 is always positioned above the center of excavation during excavation. Also, the vertical guide 52
A and 52b have horizontal guides 55 shown in FIG.
are provided so that the guide grooves communicate with each other, pull up the swivel joint 42, remove the drill pipe 41 connected to the Kelly bar 43, and remove the upper roller 5.
When the trolley 36 is retreated when the roller 1a reaches the height of the horizontal guide 55, the upper roller 51a is guided by the horizontal guide 55, and the lower roller 51b is guided by the notches (not shown) provided in the vertical guides 52a and 52b. The swivel joint 42 passes through the guide groove 43 and the suction hose 44.
It is now possible to evacuate to the rear.

This tower device has the following features. That is, since the upper part of the turret has a structure that allows the drill pipe 41 to pass from the center of excavation to the end on the lifting side, it becomes possible to pull up several drill pipes 41 at a time using a crane. It is possible to improve the efficiency of removing obstacles such as gravel when clogging occurs.

In addition, since the hanging end of the transverse beam 48 is open, the transverse beam 48 does not have to be pulled up to a position beyond the top of the turret 24.
Since the crane hook can pass between the left and right beams of the drill pipe, it is possible to remove the drill pipes all at once, even with a crane with a small lifting height.

Further, for the same reason, the base frame 20 and the turret 24 can be assembled or removed simply by removing the rotary table 21 without separating the base frame 20 and the turret 24 during relocation, thereby improving work efficiency.

Furthermore, the hook 3 supports the drilling tool 25 not only when suspending the drill pipe 41 but also during excavation.
7a and the trolley 35 can be positioned at the center of the excavation, it becomes easy to align the bolt holes of the flange when adding the drill pipe 41, and it is possible to excavate holes with high vertical accuracy.

However, in this tower device, the trolley 3
5, 36, when a hydraulic motor type as shown in the example is used, the hoses 75, 76 for supplying and discharging oil from an external hydraulic source (not shown) to the hydraulic motors of each trolley 35, 36 are, for example, As shown in the illustrated example, sheaves 75 and 76 are attached to the ends of the transverse beam 48 on the side opposite to the suspension, and a heavy weight is attached so as to be vertically movable along the guide 77 provided on the side opposite to the suspension of the turret 24. By hooking the sheaves 80, 81 to which gravity is applied downward by the weights 78, 79 and connecting them to an external hydraulic power source, tension is applied to the hydraulic hoses 75, 76, which prevents them from sagging when the trolleys 35, 36 move sideways. Since the trolleys 35 and 36 move significantly along the guide rail 53, it is necessary to move a hydraulic hose of a length commensurate with the movement together with the weights 78 and 79. This poses a problem in that the hose sorting and turret devices become large-scale.

(Object of the Invention) In view of the above-mentioned problems, an object of the present invention is to provide a traverse device for a turret device for a reverse circulation drill, which allows the hydraulic piping to be fixed and the device to be compact. do.

(Structure of the Invention) In order to achieve this object, the present invention provides a reverse circulation drill equipped with a drill pipe support trolley and a drilling tool support trolley movable along a transverse beam provided at the top of the turret. In the tower device, two or two sets of sheaves are attached to each of the trolley for supporting the drill pipe and the trolley for supporting the excavating tool, and also the hanging end side and the anti-hanging end side of the transverse beam correspond to each of the trolleys. A sheave is installed, and a hydraulic cylinder for moving each trolley is installed along the longitudinal direction of the transverse beam, and a wire for moving the trolley is connected to the tip of the piston rod of each hydraulic cylinder by a clamp device. One of them is hung around the sheave on the hanging end side, and also hung on one of the two or two sets of sheaves attached to the corresponding trolley, and fixed to the hanging end side of the transverse beam. The other end of each wire is hung around the sheave on the side opposite to the hanging end, and the other of the two or two sets of sheaves attached to the corresponding trolley is hung so that the end is connected to the side opposite to the hanging end of the transverse beam. It is characterized by being fixed at.

(Example) The present invention will be explained below with reference to an example shown in FIGS. 4 and 5. In Figures 4 and 5,
48' is a guide rail 53 provided at the top of the tower;
53, 48A is the drill pipe hanging side end thereof, and 48B is the opposite side end. Reference numerals 35' and 36' denote a drill pipe support trolley with a hook hanging thereon for suspending the additional drill pipe 41, and a digging tool support trolley with a hook hanging thereon that supports the drilling tool 25, respectively. ′、
36', the rolling roller 72 is connected to the guide rail 5.
By rolling on the guide rails 53, 53, it is possible to move along the guide rails 53, 53. 2A, 2B
3A and 3B are two sheaves coaxially and rotatably attached to the drill pipe support trolley 35' and the excavator support trolley 36', respectively. 4A and 4B are hydraulic cylinders for moving the respective trolleys 35' and 36', and these are installed along the longitudinal direction of the transverse beam 48'. 5A and 5B are wires for moving the drill pipe support trolley 35' and drilling tool support trolley 36', respectively, and the wires 5A and 5B are connected to the piston rods of the hydraulic cylinders 4A and 4B, respectively, by the clamping device 8.
The intermediate portion is fixed by A and 8B. 6A,
7A is the transverse beam 4 for hanging the wire 5A for moving the drill pipe supporting trolley 35'.
8' drill pipe hanging end 48A side and anti-hanging end 48B side respectively,
6B and 7B are the transverse beams 4 for hanging the excavator support trolley 36' moving wire 5B.
8' drill pipe hanging end 48A side and anti-hanging end 48B side respectively,
9A and 9B are wire fixing tools.

Each of the wires 5A and 5B has one end wrapped around the sheaves 6A and 6B on the side of the hanging end 48A, and one of the wires 5A and 5B is passed around one of the sheaves 2A and 3A attached to the corresponding trolley 35' and 36'. Each end is fixed to the hanging end 48A side of the beam with a fixture 9A, and the other of the wires 5A, 5B is connected to each sheave 7A, 7 on the side opposite to the hanging end 48B.
At the same time as hanging around B, the corresponding trolley 35',
The anti-hanging end 48B of the transverse beam is hung on the other sheaves 2B and 3B attached to
Each end is fixed to the side using a fixture 9B.

According to this configuration, the hydraulic cylinder 4A or 4
By extending and contracting B, the trolley 35' or 36' can be moved independently,
In addition, the hydraulic cylinders 4A and 4B are connected to the transverse beam 48'.
Since the hydraulic piping is fixed to the pipe, fixed piping is sufficient.

In this embodiment, if the running grooves of the trolleys 35' and 36' of the transverse beam 48' are made wide enough to allow the drill pipe 41 to pass through, it is possible to pull out a plurality of drill pipes at a time as described above. . In addition, as shown in the embodiment, the transverse beam 4
By opening the drill pipe hanging side end 48A of 8', benefits such as the ability to use a crane with a small lifting height can be obtained as described above.
Further, instead of only two sheaves being attached to each trolley 35', 36', another sheave may be provided for a rope guide or the like. In addition, the trolley 3
5' and 36' are not limited to those shown in FIGS. 1 to 3.

(Effects of the Invention) According to the present invention, the drill pipe support trolley and the drilling tool support trolley can each be moved independently, and the hydraulic cylinder can be fixed to the transverse beam. Fixed piping can be used, making the device compact, and since the only thing needed to move the trolley is a sheave and wires in addition to the hydraulic cylinder, the number of parts can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the previously filed known turret device, Fig. 2 is a view taken along the line A-A in Fig. 1, Fig. 3 is a view taken along the line B-B in Fig. 1, and Fig. 4. 5 is a plan view of one embodiment of the traversing device of the present invention, and FIG. 5 is a perspective view showing a part of FIG. 4. 2A, 2B, 3A, 3B, 6A, 6B, 7A,
7B... Sheave, 4A, 4B... Hydraulic cylinder,
5A, 5B...Wire, 8A, 8B...Clamp device, 9A, 9B...Fixing device, 35'...Drill pipe support trolley, 36'...Drilling tool support trolley, 48A...Transverse beam, 48A ...Drill pipe hanging side end, 48B...Anti-hanging side end.

Claims (1)

[Claims] 1. In a reverse circulation drill turret device equipped with a drill pipe support trolley and a drilling tool support trolley that are movable along a transverse beam provided at the top of the turret, the drill pipe support trolley and the drilling tool support trolley are Two sheaves or two sets of sheaves are attached to each trolley, and sheaves corresponding to each trolley are attached to the drill pipe hanging end side and the opposite end side of the transverse beam, respectively, and hydraulic pressure for moving each trolley is installed. The cylinders are installed along the longitudinal direction of the transverse beam, and a trolley moving wire is connected to the tip of the piston rod of each hydraulic cylinder by a clamp device, and one of the wires is hung around the sheave on the hanging end side. The end of each wire is fixed to the suspended end side of the transverse beam by hanging it over one sheave of the two wires or two sets attached to the corresponding trolley, and the other wire is connected to the sheave on the opposite side of the suspended beam. Reverse circulation characterized in that the end of the transverse beam is fixed to the side opposite to the hanging end of the transverse beam by hanging it around the other of the two or two sets of sheaves attached to the corresponding trolley. Traverse device for drill turret device.