JPH0646092U - Cutting device for rod - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rod connecting device that can efficiently pull out a rod even in a place where the total height of the space is low such as underground construction. [Structure] A device for pulling out a rod inserted into the ground, comprising a base part 3 having a winding part 2, a stool part 4 erected on the base part 3 and capable of expanding and contracting. Turret 4
Drive unit 5 for extending and contracting the turret portion 4, a pulley portion 6 provided on the top of the turret portion 4, and a wire 7 from the upper end of the rod 1 to the winding portion 2 via the pulley portion 6. It has and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rod connecting device.

[0002]

[Prior art]

 Conventionally, when injecting a chemical solution into the ground (rod injection method) or searching for underground resources, a rod (hereinafter, rod is a concept that includes all tubular bodies such as casings) is inserted into the ground and The desired depth was achieved by sequentially replenishing.

After the work is finished, a wrecker is generally used to pull out the rod, but it cannot be used in a place where there is a ceiling height limitation (empty head limitation) such as underground construction. A device as shown in 3 is used.

This is such that a turret portion 10 is erected on a base portion 3 having a winding portion 2, and a pulley portion 6 is provided on the top of the turret portion 10, and in the vicinity of the pulley portion 6. A wire 7 is stretched from the upper end of the positioned rod 1 to the winding section 2 via the pulley section 6.

Then, when the wire 7 is wound up and the rod 1 is pulled out to an appropriate height, the root of the rod 1 is cut off, and the same operation is repeated in sequence. By the way, the rod 1 is apt to cause core clogging at the joint, and it is desirable that the length of one rod is as long as possible from the viewpoint of reducing the joint work.

[0006]

[Problems to be solved by the device]

 However, in the conventional device described above, the entire height of the device is fixed. For example, in a place where beams 20 and scaffolding skeletons 21 are vertically and horizontally assembled on the ceiling, such as a site of subway construction, if a turret is used for a place where the ceiling height is high, the turret becomes a beam. It will be caught and it will not be possible to move the device.

However, if the total height of the turret is set to be low, the above-mentioned catching can be prevented, but the pulling-up height of the rod becomes low, so that the rod cannot be pulled up unless it is a short rod, and the work efficiency is greatly reduced. , There is a risk of causing core jam. If core jamming occurs, the rod must be pulled out once, which is an obstacle to the work plan.

[0008] Although there are some cases where the turret is a retractable type or a disassembling type so that the total height is lowered only when the turret is moved, there is a problem in that the disassembling and the like take time and the efficiency is insufficient. There is also a method of attaching a gold wheel to the beams and girders on the ceiling without using a turret and passing wires through it, and using the full height of the ceiling to pull up the long rod, but it is difficult to move. This is not preferable because the work of attaching the gold wheel is dangerous.

For the above reasons, at present, it is inevitable to use a relatively short rod of about 1.5 m. The present invention has been made in view of the above-mentioned matters, and it is a technical object to provide a rod jointing device that can make full use of the ceiling height in a work place and can be easily moved. .

[0010]

[Means for Solving the Problems]

 In order to solve the above technical problems, the present invention is a device for pulling out the rod 1 inserted into the ground, and has the following structure.

That is, a base part 3 that is movable and has a take-up part 2, a multi-stage slidable stalk 4 that is erected on the base part 3 and is slidable, and a stake part 4 are provided. A drive unit 5 for expanding and contracting the turret portion 4, a pulley portion 6 provided on the top of the turret portion 4, and a wire 7 extending from the upper end of the rod 1 to the winding portion 2 via the pulley portion 6 are provided. It is equipped with a variable height.

The drive unit 5 can be not only electrically operated but also manually operated. Further, the turret portion 4 may be configured, for example, as a ladder type so as to be vertically expanded and contracted by a wire.

[0013]

[Action]

 Since the turret part 4 can be expanded and contracted by the drive part 5, it can be stretched high in a portion where the ceiling is high and the efficiency of pulling up the rod can be improved.

Further, when moving a portion having a low ceiling or a device, it can be dealt with by contracting the turret, and the work of pulling up the rod can be performed with maximum efficiency according to the work place.

[0015]

【Example】

 Next, an embodiment of the present invention will be described with reference to FIGS. Wheels 3a are provided on the base portion 3 installed on the ground so that it can run. The base 3 is provided with a winch serving as the winding unit 2.

A turret portion 4 is provided on one side surface of the base portion 3. The turret 4 is made of a hollow steel material having a square cross section, and a second-stage turret 4b is slidably fitted inside the base turret 4a fixed to the base 3, and the two tiers A third stage turret 4c is slidably fitted inside the turret 4b. As a result, the turret portion 4 can be expanded and contracted.

Rack gears 14b and 14c are provided on the side surfaces of the second-stage turret 4b and the third-stage turret 4c, respectively, at positions slightly buried from the side surfaces. An electric motor 5a is provided at the upper end of the base turret 4a, and an electric motor 5b is provided at the upper end of the second stage turret 4b.

The electric motors 5a and 5b constitute a drive unit 5 and are provided with pinion gears 15a and 15b which mesh with the rack gears 14b and 14c, respectively. These pinion gears 15a and 15b are connected to a motor (not shown) via a speed reducer (not shown). By operating the motor, the second stage turret 4b and the third stage turret 4c are separated. It is configured so that it can be expanded and contracted in the F direction indicated by the arrow. The expansion and contraction can be freely performed by the controller 3a at hand.

A pulley portion 6 is provided on the top portion 5 of the third stage turret 4c. The pulley portion 6 is formed by arranging two pulleys 6a, 6a in series, and a wire 7 wound around a drum 2a of the winding portion 2 is stretched.

The drive unit 5 may be a screw rod, a hydraulic jack, or a high lift jack including a ratchet and a rack.

Further, the number of stages of the turret portion 4 is not limited to the above-mentioned three stages, and can be set arbitrarily as a matter of course. In addition to being electric, it can also be a manual type that expands and contracts by rotating the handle. Further, the turret portion 4 is not limited to the above-described configuration, and may be configured to be vertically expandable and contractible by a wire as a ladder type, for example.

The rod cutting device having the above-mentioned configuration is mainly used in a site where the ceiling is limited in height. Explaining an example of the site, a lining plate 24 is laid on the ground, and the lining plate 24 is located below the lining girder 23 and the lining girder 23 formed by arranging H steel in the lateral direction. It is supported by the girder 22. An inspection scaffolding frame 21 and a cross beam 20 are installed below the girder 22, and the girder support 22, the inspection scaffold frame 21 and the girder 20 are located on the ceiling in the underground space.

The heights S, A, B, and C from the construction base G to the upper end of the girder 22, the lower end of the girder 22, the inspection scaffolding frame 21 and the girder 20 are 5.4 m and 5, respectively. It is set to 0.0 m, 3.8 m, and 3.5 m.

When using the apparatus having the above-described configuration, as shown in FIG. 2, the turret portion 4 is positioned near the rod 1 and the tip of the wire 7 is fixed to the upper end of the rod 1. At this time, the height of the tip of the turret portion 4 is set to a position as high as possible within the range where it does not collide with the girder receiver 22, the inspection scaffolding frame 21 and the girder 20. Further, when the apparatus is moved, the height of the stalk 4 is adjusted while operating the controller 3a.

By making the turret part 4 extendable in this way, it has become possible to use a rod length of up to 3 m, which was previously limited to 1.5 m in the field under the above-mentioned conditions. . As a result, the number of connections is reduced, and troubles such as core clogging can be prevented.

When the ceiling height is set in advance in several steps as described above, the operation is further facilitated by presetting the value in the controller 3a so that it can be called with one touch.

In this way, the maximum tower height can be obtained within the ceiling height range at the position where the work is performed, so that the work can always be performed with the maximum efficiency.

[0028]

[Effect of device]

 As described above, according to the present invention, since the turret portion is telescopic, the total height of the space is low as in underground construction, and the rod can be efficiently pulled out even in a place where there is a step in the ceiling height. .

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a side view of a use state showing an embodiment of the present invention.

FIG. 3 is a side view of a conventional rod connecting device in a use state.

[Explanation of symbols]

 1 ... Rod, 2 ... Winding part, 3 ... Base part, 4 ... Turret part, 5 ... Drive part, 6 ... Pulley part, 7 ... Wire.

Claims (1)

[Scope of utility model registration request] 1. A device for pulling out a rod inserted into the ground, comprising a base part that is movable and has a winding part, and a multi-stage telescopic structure that is installed upright on the base part and is slidable. Turret portion, a drive portion provided on the turret portion for expanding and contracting the turret portion, a pulley portion provided on the top portion of the turret portion, and a wire extending from the upper end of the rod through the pulley portion to the winding portion. And a connecting device for a rod, characterized in that the overall height is variable.