JPH0347397B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vertical excavator that excavates the ground in the vertical direction, and is particularly applicable to a wide range of ground types of various types of soil, and can be easily transported. It concerns a vertical excavator.

[Conventional technology]

FIG. 8 is a schematic configuration diagram of a first conventional example of a vertical excavator. In the figure, 1 is a casing tube;
2 is a hammer club that excavates the ground inside the casing tube 1; 3 is a crane that supports and operates the hammer club 2; 4 is a press-fitting of the casing tube 1;
Power jack to pull out, 5 is power jack 4
6 is a hydraulic unit that operates the power jack 4.

The vertical excavator of the first conventional example is constructed as described above. For example, when excavating the ground, the hydraulic unit 6 is operated to operate the power jack 4 to press fit the casing tube 1 into the ground to be excavated, and the hammer club 2 excavates the ground inside the casing tube 1, and excavates into the ground while repeating press-fitting of the casing tube 1 and excavation with the hammer club 2.

FIG. 9 is a schematic configuration diagram of a second conventional example of a vertical excavator. In the figure, 11 is a casing tube, 12 is an auger that excavates earth and sand in the casing tube 1, 13 is a rotation drive unit that rotates the auger 2, 14 is a rotary jack that rotationally presses in and pulls out the casing tube 11, and 15 is a rotary A leader supporting the jack 14, 16 is the leader 1
This is the main body of the excavating machine that supports 5.

The vertical excavator of the second conventional example is configured as described above. For example, when excavating the ground, the rotary jack 14 is operated and the casing tube 11 is
Rotate and press-fit into the ground to be excavated, and auger 1
2 excavates the ground inside the casing tube 11, and excavates into the ground while repeating rotational press-fitting of the casing tube 11 and excavation with the auger 12, and can also be applied to rock.

FIG. 10 is a schematic configuration diagram of a third conventional example of a vertical excavator. In the figure, 21 is a hammer club for excavating the ground inside the casing tube 21, 23 is a crane for supporting and operating the hammer club 22, 24 is a rotary jack for rotationally press-fitting and pulling out the casing tube 21,
25 is an excavator main body that supports the rotary jack 24.

The vertical excavator of the third conventional example is configured as described above, and when excavating the ground, for example, the rotary jack 24 is operated to open the casing tube 21.
is rotated and press-fitted into the ground to be excavated, the ground inside the casing tube 11 is excavated by the hammer club 22, and the rotary press-fitting of the casing tube 21 and the excavation of the hammer club 22 are alternately repeated in order into the ground. This method can be applied to rock as well.

[Problem that the invention seeks to solve]

In the vertical excavator of the first conventional example described above, the counterweight 5 takes up the reaction force when the casing tube 1 is press-fitted, so the installation work of the counterweight 5 takes time and requires installation space. At the same time, there was a problem that the transportation cost increased by the amount of the counterweight 5.

Further, since the power jack 4 only presses in and pulls out the casing tube 1, there is a problem that construction cannot be performed when the ground is rock or the like.

Further, in the vertical excavator of the second conventional example as described above, the rotary jack 14 is integrated with the excavator main body 16 and the leader 15, so the rotational torque of the rotary jack 14 is limited, and the casing tube There was a problem that there were limits to the applicable diameter of No. 11 and the strength of the rock to be excavated. Specifically, the lifting load of the excavator body is limited to 40 ^ton class, the allowable rotational torque of the rotary jack 14 is limited to 20 ^ton-m or less, and the casing tube 11
The applicable diameter is limited to 1000mm or less.

Furthermore, since the vertical excavator of the third conventional example uses the rotary jack 24 and the hammer club 22, it can be applied to hard rock, and the casing tube 21 has a large diameter of 1000 to 1500 mm. However, in the 1500 mm class, the total weight of the excavator body 25 is 100 ^tons , and the problem is that it cannot be transported as a complete set and must be disassembled and transported, resulting in transportation costs and the labor of disassembling and reassembling. The dot was hot.

This invention was made in order to solve these problems, and the purpose is to obtain a vertical excavator that can excavate even in soft ground and hard rock, and that is lightweight and reduces the transportation cost of equipment etc. do.

[Means for solving problems]

A vertical excavator according to the present invention is an excavator capable of connecting a press-fitting device for press-fitting a casing tube into the ground and a boring machine main body equipped with a digging tool for excavating the ground in the casing tube; is a rotary press-fitting device comprising a clamping means for clamping the casing tube, a rotating means for transmitting rotation to the clamping means, and a lowering means for lowering the clamping means, and the rotary press-fitting device is detachably attached to the rotary press-fitting device. It is configured to include a reaction force base on which the connected boring machine bodies are placed.

[Effect]

In this invention, when the rotary power jack mechanically clamps the casing tube and rotates and press-fits it, the boring machine is placed on the reaction base connected to the rotary power jack. The rotational reaction force and press-in reaction force generated in the Tsuki are absorbed by the weight of the medium excavator mounted on the reaction force base, and it can be applied to hard ground such as rock that generates large press-in reaction force and rotational reaction force. becomes.

〔Example〕

Fig. 1 is a partially omitted front view showing an embodiment of the present invention, Fig. 2 is a plan view showing the reaction force base, and Fig. 3 is a partially omitted front view showing an embodiment of the present invention.
The figure is a partial sectional view of the rotary power jack.
The figure is a front view of the rotary power jack, Figure 5 is a sectional view of the main parts of the rotary power jack, Figure 6 is a partial side view of the rotary power jack, and Figures 7a and b show the rotational reaction force rod. FIG.

In FIG. 1, 101 is a medium excavator, 102 is a reaction base on which the medium excavator 101 is placed, 103 is a casing tube, and 104 is a casing tube 1.
A rotary power jack 03 clamps, rotates and presses in and pulls out, and an auger 105 is an excavating tool connected to a boring machine 101 to excavate the ground inside the casing tube 103. The medium excavator 101 is also configured to be connected to a hammer club (not shown), which is an excavating tool, instead of the auger 105.
The auger 105 and hammer club are used depending on the soil quality of the ground to be excavated. The reaction base 102 is mechanically connected to the rotary power jack 104, and when the boring machine 101 is placed on the reaction base 102, the rotary power jack 10
Take the rotation reaction force and press-fit reaction force in step 4.

In FIGS. 2 to 6, reference numeral 106 denotes a rotary power jack base, one end of which is connected to the reaction force base 102 by a connecting bolt 107. Reference numeral 108 indicates an upper frame, 109 indicates four hydraulic motors with reduction gears attached to the upper frame 108, and 110 indicates an upper frame 10.
A ring-shaped external gear rotatably supported by 8.
It meshes with a pinion 111 that is pivotally attached to the motor shaft of the hydraulic motor 109 with a reduction gear. Reference numeral 112 indicates four chuck connecting arms hanging down from the external gear 110, and reference numeral 113 indicates the casing tube 10.
3, one end of which is rotatably connected by each chuck connecting arm 112 and a fixing link pin 114. Further, the center portion of a link 115 is rotatably connected to each chuck connecting arm 112 by a fixing link pin 114. One end of the link 115 is rotatably connected to the other end of the clamp chuck 113 by a rotary link pin 117. and,
The other ends of two mutually adjacent links 115 are rotatably connected by a rotation pin 117 via a clamp jack 118.

In FIG. 7, reference numeral 120 indicates four press-in/pull-out jacks erected around the rotary power jack base 106, and a rod 120a of each press-in/pull-out jack 120 supports the upper frame 108. 121a is a rotary power jack base 1 that surrounds the pressure pull-out jack 120 and is fixed to the upper frame 108;
This is an internal rotation reaction force rod fixed to 06. These rotational reaction force rods 121a and 121b are adapted to take up the rotational reaction force of the hydraulic motor 109 with a reduction gear.

In the vertical excavator configured as described above, when excavating soft ground of general soil, the pressing force of the casing tube 103 is not necessary, and the rotary power jack 104 and the reaction force base 102 can be separated. rotary power jack 10
Excavating with only 4. In this case, first, operate the clamp jack 118 to adjust the clamp jack 1.
When the rods on both ends of 18 are extended, each link 11
5 rotates to rotate the clamp chuck 113 in the tightening direction, and the clamp chuck 113 tightens the casing tube 103.

Next, when the hydraulic motor with reduction gear 109 is rotated, its rotational force is transmitted to the external gear 110 via the pinion 111, causing the external gear 110 to rotate.
Accordingly, the chuck connecting arm 1 is connected to the external gear 110.
Clamp chuck 1 connected via 12
13 rotates, causing the casing tube 103, which is clamped to the clamp chuck 113, to rotate.

At the same time, when the rod 120a of the press-in pull-out jack 120 is operated to retract and lower the entire upper frame 108, the external gear 110 and the chuck connecting arm 11 are attached to the upper frame 108.
Clamp chuck 11 supported via 2
3 is lowered, and the casing tube 103 is pressed into the ground to be excavated while rotating. Therefore, the ground inside the casing tube 103 is excavated by the auger 105. In this way, rotational press-fitting of the casing tube 103 and excavation with the auger 105 are repeated to advance into the ground. At this time, once the casing tube 103 is press-fitted to a predetermined depth, the clamp of the clamp chuck 113 is released and the rod 1 of the press-fit/pull jack 120 is removed.
20a and crank chuck 113 again.
After clamping the casing tube 103, the press-in and pull-out jack 120 is operated.

When the excavation is completed and the casing tube 103 is to be pulled out, the clamp chuck 113 is press-fitted with the casing tube 103 tightened, and the extraction jack 120 is operated so that the rod 120a extends to raise the entire upper frame 108. Then, the casing tube 103 clamped by the clamp chuck 113 is pulled out.

In addition, when excavating ground such as hard rock,
A large pressing force of the casing tube 103 is required, and at this time the rotary power jack 1
04 and the reaction force base 102 are integrated to form a medium excavator 1.
01 on the reaction base 102, and install the clamp chuck 113 and the press-in and pull-out jack 1 in the same manner as described above.
Excavate the ground by operating the 20 etc. Further, a hammer club may be used instead of the auger 105 if necessary.

As described above, when the ground to be excavated is hard rock, a large rotational force and press force are required when press-fitting the casing tube 103, and therefore the press-fitting reaction force and rotational reaction force are large, but the clamp chuck 113 The rotational reaction force generated in the clamp chuck 113 is partially absorbed by the rotational reaction force rods 121a and 121b and transmitted to the rotary power jack 104, and the press-fit reaction force generated in the clamp chuck 113 is transmitted to the rotary power jack 104. The power jack 104 is connected to the reaction force base 102, and the medium excavation 101 is placed on the reaction force base 102, so these press-fitting/rotating reaction force bases have a reaction force of 1.
02 and the medium excavator 101 above it, and unlike the first conventional example, the counterweight 5 is not required. In addition, since the rotation/press-in reaction force is taken by the reaction force base 102 and the excavator 101 mounted on it, the problem in terms of strength is the strength of the reaction force base 102, and the second conventional example There is no need to reinforce the leader 15 as in the case of FIG. Furthermore, since the excavator 101 and the rotor power jack 104 are separated, it is lighter than the third conventional example and can be easily transported.

〔Effect of the invention〕

As explained above, the press-fitting device of this invention includes:
A rotary press-fitting device comprising: a clamping means for clamping a casing tube; a rotating means for transmitting rotation to the clamping means; and a lowering means for lowering the clamping means; Since it is equipped with a reaction force base on which the core drilling machine body is placed, the press-in reaction force generated during rotational press-fitting of the casing tube is reduced due to the weight of the reaction force base and the core drilling machine body placed on this reaction force base. can be obtained in good condition. In addition, since the reaction base is removably connected to the rotary power jack, it is naturally lighter during transport, but the reaction base is not used on soft ground, but is used on hard ground. Furthermore, it is possible to install and use a digging machine on-site, and it can be used in a wide range of situations, including various types of soil and on-site conditions.

[Brief explanation of drawings]

Fig. 1 is a partially omitted front view showing an embodiment of the present invention, Fig. 2 is a plan view showing the reaction force base, and Fig. 3 is a partially omitted front view showing an embodiment of the present invention.
The figure is a partial sectional view of the rotary power jack.
The figure is a front view of the rotary power jack, Figure 5 is a sectional view of the main parts of the rotary power jack, Figure 6 is a partial side view of the rotary power jack, and Figures 7a and b show the rotational reaction force rod. 8 is a schematic diagram of the vertical excavator of the first conventional example, FIG. 9 is a schematic diagram of the vertical excavator of the second conventional example, and FIG. 10 is a schematic diagram of the vertical excavator of the third conventional example. It is a schematic configuration diagram. In the figure, 101 is a boring machine, 102 is a reaction force base, 103 is a casing tube, 104 is a rotary power jack, and 105 is an auger (excavation tool). In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. An excavator capable of connecting a press-fitting device for press-fitting a casing tube into the ground and a boring machine body equipped with a drilling tool for excavating the ground inside the casing tube, wherein the press-fitting device comprises: A rotary press-fitting device comprising a clamping means for clamping the casing tube, a rotating means for transmitting rotation to the clamping means, and a lowering means for lowering the clamping means, the rotary press-fitting device being detachably connected to the rotary press-fitting device. A vertical excavator comprising a reaction base on which the excavator main body is placed.