JPS5985089A - Drilling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an excavator used for forming an excavation hole underground, injecting cement mortar into the excavation hole, and the like.

Conventionally, this type of excavator has been constructed by directly connecting an auger such as a screw to an auger machine installed in a league that can be raised and lowered freely. was determined by the maximum lifting stroke of the auger machine. Therefore, when digging a deep borehole, a league with a height commensurate with the depth was required. However, since the auger machine itself, which contains an electric motor, reducer, and other various parts, is quite heavy, if the auger machine is positioned at the top of the tall league at the beginning of excavation, the center of gravity of the excavator will be The auger machine is set at a high position, making it unnecessary to work in unstable conditions.In addition, it is necessary to increase the rigidity of the league that supports the auger machine, so the league is There is also the problem of needing a diameter.

The present invention was developed in view of the above circumstances, and the depth of the drill hole that can be excavated is not limited by the vertical stroke of the auger machine, and the center of gravity of the excavator is set at a high position even in the early stage of excavation. The purpose of this project is to provide an excavator that can operate in a stable state at all times.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An excavator as an embodiment of the present invention will be described below with reference to the drawings.

What is shown in FIGS. 1 and 2 is an example of a multi-shaft excavator. That is, in the illustrated example, the multi-shaft excavator is assembled with one stirring screw Ia and one stirring rotor I'lb, lb arranged in parallel on the left and right sides of the stirring screw Ia, after forming an excavation hole. This is for subsequently pouring concrete, cement mortar, etc. into the excavated hole (cess shown in the figure) while ta t'+: L.

In the figure, a vertical leader 3 with a guide rail 2
, an auger machine 4 is provided in a lower flat part or a middle part relatively close to the lower end thereof so as to be able to be raised and lowered, and an elevating device 5 for raising and lowering the auger machine 4 is provided on the opposite side. Further, a support mechanism 7 equipped with a pulley block 6 is installed at the top of the leader 3, and three shaft members 8 suspended from the support mechanism 7 pass through the auger machine 4. The stirring screw 1a and the stirring rod 1"lb, lb are connected to the lower ends of these shaft members 8 via the reducer 9.The stirring screw 1a and the stirring rod 1b are connected to the auger 1. This is one example, and it is also possible to connect a screw for forming an excavation hole, a torque tube with a screw, or the like to the shaft member 8.

Further, the auger machine 4 is provided with a chuck mechanism 10 at its lower part, and the action of the chuck mechanism 10 allows the auger machine 4 to be engaged with the shaft member 8 in the vertical direction of the auger machine 4. On the other hand, the shaft member 8 is constituted by a rectangular tube member whose horizontal cross section is approximately rectangular and annular, and its two ends are connected to the Schiegel device 11.

As is clear from FIGS. 3 and 4, the auger machine 4
includes an electric motor 12, a reduction gear fi 13, and a roller type guide block 14, the details of which are shown in FIGS. 5 to 7. That is, in FIGS. 5 and 6, the reducer 13 is connected to the input gear 1 connected to the rotating shaft of the electric motor 12.
5, an intermediate gear 16 meshed with the input gear 15, an output float 17 meshed with the intermediate gear 16, and these gears 1
5.16.17 and a casing 18 that rotatably supports it. Output float 17 in this reducer 13
The rotating shaft 19 is composed of a cylindrical member, and the hollow part 19
1. The shaft member 8 passes through the section a. In addition, in FIGS. 5 and 7, the guide block 14 has four sets of brackets 21 provided on a frame body 2o which is circular in plan view, and a guide roller 22 is supported by a horizontal pin 23 on each set of brackets 21, respectively. These four guides 1 Cola 22
are positioned at every 90 degrees. The rotating guide block 14 is connected to the rotating shaft 1 in the reducer 13.
A pair of two lower parts are provided so as to sandwich 4j of 9, and the frame body 2° thereof is connected to the rotating shaft 19. The four guide 1 callers 22 in each guide block 14 are in contact with the four flat outer surfaces 8a of the shaft member 8 passing through the guide block 14. Therefore, even when the guide block 14 and the shaft member 8 rotate together, they can be moved up and down relative to each other.

Next, as is clear from FIGS. 5 and 8, the chuck mechanism 10 includes a pair of claw members 24.24 disposed on both left and right sides of the shaft member 8, and a pair of claw members 24.24 that surround these claw members 24.24. It consists of a ring body 25 disposed in and a hydraulic cylinder 26 for moving the ring body 25 up and down. The upper end of the claw member 24 is supported by the frame 20 of the guide block 14 on the lower side by a pin 27, and has a large number of small protrusions 24a on the inner surface of the lower end facing the shaft member 8. The outer surface is a downwardly expanding inclined surface 24b. Further, the ring body 25 is rotatably supported by the outer frame member 28 via a hair ring 29, and the inner surface facing the inclined surface 24b of the claw member 24 has a downwardly expanding tapered surface 25a. Further, the hydraulic cylinder 26 has its cylinder tube 26a supported by the casing 18 by a pin 30a, and its piston rod 26b connected to the outer frame member 28 via a pin 30b and a bracket 31. In this case, when the hydraulic cylinder 26 is contracted -H, the tapered surface 25a of the ring body 25 and the (ψ slope 24b
By forming a certain gap S between the pawl member 24 and the shaft member 8, the claw member 24 can be separated from the shaft member 8 within the range of the size of the gap S, while when the hydraulic syringe 26 is extended, As the ring body 25 moves downward, its tapered surface 25
a comes into pressure contact with the inclined surface 2db of the claw member 24, and due to the wedge action between the two, the claw portion +A24 is strongly rotated against the shaft member 8, and its small protrusion 24a is strongly pressed against the shaft portion 8. It's starting to look like this. Therefore, hydraulic cylinder 2
When G is contracted, the shaft member 8 engages the pair of claw members 24, 24.
It can be moved up and down as it is not pinched by the However, when the hydraulic cylinder 26 is extended, the shaft member 8 is strongly held and engaged by the pair of claw members 24 and 24, so that it cannot be raised or lowered. Note that even in this case, rotation is possible due to the action of the bearing 29.

Note that the electric motor 12, reducer 13, guide block 14, and chuck mechanism 10 described above are provided in sets for each of the three shaft members 8, but the chuck mechanism 10 is provided for each of the three shaft members. Each of the ring bodies 25 is supported by a common outer frame member 28 so that those for 8 operate in the same manner at the same time, and six hydraulic cylinders 26 are connected to the outer frame member 28 (Fig. 3, (See Figures 4, 5 and 8).

As shown in FIGS. 9 and 10, the lifting device 5 is
The upper pulley group 33 is attached to the leader 3 via the support frame 32, the hydraulic cylinder 34 whose cylinder tube 34a is attached to the leader 3, the lower pulley group 35 connected to the piston rod 34t1 of the hydraulic cylinder 34, and the lower pulley group 33. A guide rail 36 that guides the folding and descending of the pulley group 35, and a cable body 3 wound between the upper pulley group 33 and the lower pulley group 35.
It consists of 7. The upper pulley group 33 has two fixed pulleys 33.
a, 33a and one guide pulley 33b, and
The lower pulley group 35 includes two movable pulleys 35a, 35a.
and between these, as shown in FIG.
7 is wound, and one end of this cable body 37 is fixed to the support frame 32, and the other end is connected to the auger machine 4. This is a so-called boost mechanism. Therefore, the auger machine 4 is pulled up by extending the hydraulic cylinder 34 and pushing down the lower fan wheels 71Y and 35. The movement (2) of the auger machine 4 at this time is several times (four times in the illustrated example) the stroke of the hydraulic cylinder 34, that is, the movement amount I- of the lower pulley group 35. Furthermore, when the oil supply and drainage boat (not shown) of the hydraulic cylinder 34 is opened, the auger machine 4 is lowered by its own weight,
Accompanying this, the hydraulic cylinder 34 is contracted.

In the illustrated example, in order to smoothly raise and lower the auger machine 4, an upper pulley group 33 and a lower pulley group 3 are used.
5 and a pair of cable bodies 37 are used on the left and right sides of the hydraulic cylinder 26.

The elevating device 5 is not limited to the one described above, but it is also possible to use the one shown in FIG. 12.

That is, in the one shown in FIG. 12, pulleys 38a and 38b are provided on one side of the leader 3 near the lower end of the leader, and a pulley 39 is provided on the other side, and pulleys are provided on both sides of the auger machine 4. 40a, 40b, turning pulley 41 on the back
A, 41b are provided, and a rope body 42 from a winch equipped on a crane (not shown) is wound around a pulley 38b from a pulley 38a via a table 41a, and the rope body 42 is further wound around a pulley 40a.

40b to the opposite side from the l'h wheel 39 to the pulley 4.
The terminal end of the cable 42 is fixed to a stopper 45 via the cable 1b, so that the cable 42 and a group of pulleys form a so-called booster structure. According to this, by pulling the cable body 42 in the direction of the arrow with the winch, the auger machine 4 is strongly pulled down in the direction of the arrow.

Next, as is clear from FIGS. 1, 13, and 14, the support mechanism 7 that supports the shaft member 8 in a hanging manner is provided on the underframe 43 that is provided on the leader 3 so that it can be raised and lowered. A movable pulley group 44, a fixed pulley group 46 and a turning pulley 47 provided on the pulley block 6 at the top of the leader 3, and windings around these pulley groups 44 and 46 and passing through the turning pulley 47 on the crane side. It consists of a cable body 4B that is guided to a winch (not shown). According to this support mechanism 7, when the cable body 48 is let out, the underframe 43 is lowered, and conversely, when the cable body 48 is wound around the winch, the underframe 43 is raised.

13 to 15, the Seaher device 11 has a gauging 50 fixed to the 7'7 frame 43 side supporting a cylindrical rotating shaft 52 via a hair ring 51. A boss connection assembly 54 connected via a crank 1ζ packing 53 is provided at the upper end.

A coupling 55 is provided at the lower end of the rotating shaft 52, and the shaft member 8 is connected to the coupling 55. Further, the intermediate portion of the hose 56 connected to the GTR hand 54 is wound around a drum 57 provided on the underframe 43 and is wound on an LSI, so that the portion 5 between the drum 57 and the connecting end 56a to the step child 54
7b is loosened into a U-shape. Note that the drum 57 is attached to the underframe 4.
It is possible to pull it out to the side relative to the leader 3, thereby preventing the pose 56 from interfering with and damaging the leader 3 or other members during excavation work. There is.

When forming an excavation hole underground using the excavator described above, the chuck mechanism 10 is operated to engage the auger machine 4 with the shaft member 8, and the auger machine 4 is driven to engage the shaft member 8. 8 and the auger 11, and from this state, the auger machine 4 and the underframe 43 are lowered in synchronism by the action of the lifting lit device 5 and the winch on the crane side. As a result, after the auger 1 is inserted into the ground to a certain depth, the chuck mechanism 10 is deactivated and the connection between the auger machine 4 and the shaft member 8 is released, and then only the auger machine 4 is traded. After this, the chuck mechanism 10 is operated again to engage the auger machine 4 with the shaft member 8, and from this state, the auger machine 4 is lowered to continue excavation with the auger 1. Thereafter, similar operations are repeated to form an excavation hole of the required depth. In addition, in such excavation work, when the underframe 43 is gradually lowered to the vicinity of the auger machine 4, the shaft member 8 is separated from the camp ring 55, and a new shaft member is attached to this shaft member 8. , and its upper end is connected to the camp ring 55. In this way, even if a relatively short leader 3 is used, a very deep excavation hole can be formed. In addition, the auger machine 4, which is a heavy object, is excavating,
9. Since it is always located in the lower half of the leader 3, the center of gravity of the excavator is always set at a low position, allowing stable work to be performed.

To drive foundation pile materials such as concrete or cement I-mortar into the excavated hole formed as described above,
After drilling is complete, pull auger 1 until the tip reaches the drilling T.
From the position at the bottom of the L, the auger machine 4 is driven to apply rotational force to the shaft member 8 and the auger 1, and the chuck mechanism 10 is operated to move the auger machine 4 to the shaft member 8.
Further, while driving the foundation pile material into the excavation hole from the lower end of the auger 1 through the hose 56, the seabel device 11 and the shaft member 8, the auger machine 4 and the underframe 4
3 and pulls out the auger 1 from inside the excavation hole.

In the above, when the auger machine 4 is driven, as is clear from FIG. 5 and FIG. The signal is transmitted from the output gear 17 to the guide block 143 via the rotating shaft 19. Therefore, the shaft member 8 held between the four guide rollers 22 rotates together with the guide block 14, and one torque of the rotation is transmitted to the auger 1. In this case, since the claw member 24 of the chuck mechanism 10 rotates together with the guide block 14, when the chuck mechanism 10 is in the non-operating state (see 5th TI!J), the shaft member 8 can be moved up and down relative to the auger machine 4. It is possible. Furthermore, since the ring body 25 of the chuck mechanism 10 is supported by the outer frame member 28 via two hair rings,
When the chuck mechanism 10 is in an operating state, the claw member 24 and the ring body 25 rotate together. Therefore, also in this case, rotation of the shaft member 8 can be continued.

Next, when the lifting device 5 shown in FIGS. 9 to 11 is used, the pressing force of the auger 1 into the ground during excavation is caused by the auger 1, the shaft member 8, the auger machine 4, and the underframe 43. This is caused by the own weight of the auger, etc., and since these are quite large, combined with the force of penetrating the auger into the ground as it rotates, suitable excavation is possible. but,
In cases where the ground is hard, it is not possible to apply the above own weight.
A lot of situations happen. In this case, by using the gastric pressure shown in Figure 12, it becomes possible to apply a stronger pressing force to the auger 1, forcing the auger into the ground. can.

As detailed above, the present invention is configured such that an auger machine is provided in the underground part of the league, one torque of rotation of the auger machine is not directly applied to the auger but is applied to the auger via a shaft member, and Since the auger machine is equipped with a chuck mechanism that holds the auger machine against the shaft member in the vertical direction, the center of gravity can be set at a low position even if the auger machine has a large ff1ffi. This makes it possible to continue stable work, and also eliminates the need for a tall gauge when drilling deep holes, which is combined with the fact that the center of gravity is set at a lower position. The rigidity of the league is no longer required, and its small size! ! ! Quantification is achieved.

[Brief explanation of drawings]

5. Fig. 1 is an overall side view with a part cut away of an excavator according to an embodiment of the present invention, Fig. 2 is an overall front view of the same, Fig. 3 is a side view of the auger machine, and Fig. 4 is a schematic plan view of the same. , Fig. 5 is a partial sectional view with a part of the main part of the auger machine cut away, Fig. 6 is a cross-sectional view taken along the vr-■ line in Fig. 5, and Fig. 7 is a partial sectional view taken along the line vr-■ in Fig. 5. A cross-sectional view along the line, Fig. 8 is the ■ of Fig. 6.
- A cross-sectional view along the line ■, Figure 9 is a side view of the lifting device,
Fig. 10 is a rear view of the same, Fig. 11 is an explanatory view, Fig. 12 is an explanatory view showing a modified example of the lifting device, Fig. 13 is a side view of the Schieher device, Fig. 14 is a plan view of the same, Fig. 15 is the same sectional view. DESCRIPTION OF SYMBOLS 1... Auger, 3... League, 4... Auger machine, 5... Lifting device, 7... Support mechanism, 8... Shaft member, ]0... Chuck mechanism. Applicant: Sanwa Kiko Co., Ltd. Agent Patent attorney: Tadashi Mizowaki Patent attorney: Yukio Kubo 6 2nd figure 1 opening U39-85089 (6) 1st figure 47 4, @ 6” + 1, 1ゝde, =7 ■ Figure 3 Figure 4 Figure 11 Figure 12 Proceedings Amendment (Volunteer) Commissioner of the Patent Office Kazuo Wakasugi (Examiner of the Patent Office) 1.
Indication of the case 1982 Patent Application No. 188034 2, Title of the invention Excavator 3, Person making the amendment Relationship to the case Applicant Address (Residence) Name Sanwa Kiko Co., Ltd. 4, Agent Address: 680 1-1 Nagako Nishi-dori, Amagasaki, Hyogo Prefecture Telephone Osaka (06) 481-1297 (695?) Patent attorney Tadashi Mizowaki 5 Date of amendment order ('1"1')
6. Full text of the specification subject to amendment and part of the drawings. 7. Contents of amendment [1] The full text of the specification will be corrected as shown in the attached sheet. (2) Figure 12 of the drawings will be corrected as shown in the attached sheet. Description 1, Name of the invention Excavator 2, Claim (1), An auger inserted into the ground can be connected to the lower end of a shaft member supported by a league so as to be freely raised and lowered, An auger machine that can be raised and lowered relative to the shaft member while transmitting rotational force to the member is installed in the intermediate part or lower F part of the leader described in 1 above, without inhibiting the rotation of the shaft member. An excavator, wherein the auger machine is provided with a chafe mechanism that engages the shaft member in the up-and-down direction of the auger machine. (2) An excavator according to claim 11, in which the support mechanism for supporting the shaft member in a league so as to be freely raised and lowered is separated from the auger machine, and the support mechanism is provided at the top of the league. 3. DETAILED DESCRIPTION The present invention relates to an excavator used for forming a borehole underground, injecting cement mortar into the borehole, etc. Conventionally, this type of excavator Because the auger machine, which is equipped with an auger machine that can be moved up and down, is directly connected to an auger such as a screw, the maximum depth of the hole that can be drilled by the excavator is determined by the maximum up and down stroke of the auger machine. Therefore, when digging a deep bore hole, a league with a height commensurate with the depth was necessary.However, the auger machine itself, which has a built-in electric motor, reducer, and various other parts, Since the load is quite heavy, if the auger machine is positioned at the top of the tall league at the beginning of excavation, the center of gravity of the excavator will be set at a high position, making it difficult to work in unstable conditions. In addition, since it is necessary to increase the rigidity of the league that supports the auger machine, there is also the problem that the league needs to have a large diameter.The present invention was made in consideration of the above circumstances. The auger machine is installed in the middle or lower half of the rig so that it can be raised and lowered freely, and by repeatedly moving up and down in the middle or lower half of the rig, the position of the center of gravity of the excavator can be adjusted. The object of the present invention is to provide an excavator that can always excavate in a stable state without being set at a high position.Hereinafter, an excavator as an embodiment of the present invention will be explained according to the drawings. What is shown in Figs. 1 and 2 is an example of a multi-shaft excavator. That is, the multi-shaft excavator shown in the figure has one stirring screw 1a and two screws arranged in parallel on the left and right sides of the stirring screw 1a. After the stirring rods lb and Ib are assembled to form an excavation hole, concrete, cement mortar, etc. is continuously poured into the excavation hole (U shown in the figure) while stirring. In the figure, a vertical league 3 with a guide rail 2
An auger machine 4 is provided in a lower half or middle part relatively close to the lower end of the auger machine 4 so as to be able to be raised and lowered, and an elevating device 5 for raising and lowering the auger machine 4 is provided on the opposite side. Further, a support mechanism 7 having a pulley block 6 is provided at the top of the league 3, and three shaft members 8 suspended from the support mechanism 7 pass through the auger machine 4. The stirring screw 1a and the stirring lots 'lb, lb are connected to the lower ends of these shaft members 8 via a register user 9. In addition, the stirring screw 1a
The stirring rod 1b is an example of an Augusta screw, and it is also possible to connect a screw for forming an excavation hole, a screw tube, etc. to the shaft portion +A8. Further, a chuck mechanism 10 is provided at the lower part of the auger machine 4, and the action of the chuck mechanism 10 allows the auger machine 4 to engage with the shaft member 8 in the vertical direction of the auger machine 4. On the other hand, the shaft member 8 is constituted by a rectangular tube member whose horizontal cross section is approximately rectangular and annular, and its upper end portion is connected to the Schiegel device 11 . As is clear from FIGS. 3 and 4, the auger machine 4
Electric i, l! 12, a speed reducer 13, and a roller type guide block 14, the details of which are shown in FIGS. 5 to 7. That is, in FIGS. 5 and 6, the reducer 13 includes an input gear 15 connected to the rotating shaft of the electric motor 12, an intermediate gear 6 meshed with the input gear 15, and an intermediate gear 16 meshed with the input gear 15. It consists of an output gear 17 and a casing 18 that rotatably supports these gears 15+16, 17. The rotating shaft 19 of the output gear 17 that enters the speed reducer 13 is constituted by a cylindrical member, and the shaft member 8 marked 1- is passed through the hollow portion 19a of the rotating shaft 19. Also,
In FIGS. 5 and 7, the Guy block 14 is
Four sets of brackets 21 are provided on a frame 20 that is circular in plan view,
Guide blocks 22 are supported by horizontal pins 23 on each set of brackets 21, and these four guide rollers 22 are positioned at 90 degree intervals. The guide blocks 14 are provided in pairs, upper and lower, so as to sandwich the rotating shaft 19 of the speed reducer 13, and a frame body 20 thereof is connected to the rotating shaft 19. The four guide rollers 22 on each guide block 14 are in contact with four flat outer surfaces 8a of the shaft member 8 passing through the guide block 14. Therefore, even when the guide block 14 and the shaft member 8 rotate together, they can be moved up and down relative to each other. Next, as is clear from FIGS. 5 and 8, the chuck mechanism 10 includes a pair of claw members 24 and 24 disposed on both left and right sides of the shaft member 8, and It consists of a ring body 25 disposed in and a hydraulic cylinder 26 for moving the ring body 25 up and down. The upper end of the claw member 24 is supported by the frame 20 of the guide block 14 on the lower side by a pin 27, and has a large number of small protrusions 24a on the inner surface of the lower end facing the shaft member 8. The outer surface is a downwardly expanding inclined surface 24b. Further, the ring body 25 is rotatably supported by the outer frame member 28 via a bearing 29, and the inner surface facing the inclined surface 24b of the claw member 24 has a downwardly expanding tapered surface 25a. Further, the hydraulic cylinder 26 has its cylinder tube 26a supported by the casing 18 by a pin 30a, and its piston rod 26b connected to the outer frame member 28 via a pin 30b and a bracket 31. In this case, when the hydraulic cylinder 26 is contracted, the ring body 25
By forming a certain gap S between the tapered surface 25a of the and the inclined surface 24b of the claw member 24, the claw member 24 is separated from the shaft m; member 8 within the size of the gap S. On the other hand, when the hydraulic cylinder 26 is extended, the downward movement of the ring body 25 brings its tapered surface 25a into pressure contact with the inclined surface 24b of the claw member 24, and the wedge action between the two causes the claw member 24 to press against the shaft member 8. The small protrusion 24a is forcefully pressed against the shaft portion 8 by being forced to rotate toward the side. Therefore, when the hydraulic cylinder 26 is contracted, the shaft member 8 is not held between the pair of claw members 24 and 24, so that it can freely move up and down. However, hydraulic cylinder 2
6, when the shaft member 8 is extended, the pair of claws +, I24.2
Since it is strongly clamped and engaged by 4, it is impossible to move it up and down. Note that even in this case, rotation is possible due to the action of the hair ring 29. Note that the electric motor 12, reducer 13, guide block 14, and chuck mechanism 10 described above are provided in sets for each of the three shaft members 8, but the chuck mechanism 10 is provided for each of the three shaft members 8. Each of the ring bodies 25 is supported by a common outer frame member 28 so that those for the shaft member 8 operate in the same manner at the same time, and four hydraulic cylinders 26 are connected to the outer frame member 28 (a third Figure, 4th
(see Figures 5 and 8). As shown in FIGS. 9 and 10, the lifting device 5b,
An upper pulley group 3'3 attached to the leader 3 via the support frame 32, a hydraulic cylinder 34 whose cylinder tube 34a is attached to the leader 3, and a lower pulley group connected to the piston rod 34b of the hydraulic cylinder 34. 35, a guide rail 3G for guiding the lower pulley group 35 up and down, and a cable 37 wound between the upper pulley group 33 and the lower pulley group 35. The upper pulley group 33 has two fixed pulleys 3.
3. a, 33a and one guide pulley 33b, and
The lower pulley group 35 includes two movable pulleys 35a, 35a.
and between these, as shown in FIG.
7 is wound, and one end of this cable body 37 is fixed to the support frame 32, and the other end is connected to the auger machine 4. This is the so-called A;η force mechanism C. therefore,
Extend the hydraulic cylinder 34 to 1 ζ]・Part 71-Vehicle group 3
The auger machine 4 is pulled up by pressing -F+]'Z). It becomes two. At that time, the movement of the auger machine 4 @4+i, the stroke of the hydraulic cylinder 34, ie, l') is several times (four times in the illustrated example) the amount of movement of the lower fan wheel group 35. Also, when the hydraulic cylinder 34 is contracted, the auger machine 4 is moved, and while the agitating screw 1a, agitating screw 1a, and lc are rotating, the agitating screw 1a, the agitating machine, and the lc are rotated.・It is excavated by. In the illustrated example, in order to ensure that the auger machine 4 is raised and lowered smoothly, a pair of upper pulley group 33, lower pulley group 35, and cable body 37 are installed on the left side of the hydraulic cylinder 26. things are used. The elevating device 5 is not limited to the one described in "-1", but it is also possible to use the one shown in FIG. 12. That is, this device has four movable pulleys 38a to 38d perpendicular to each other on the upper surface of the auger machine 11, and correspondingly four movable pulleys 38a to 38d are mounted on the support frame 32 of the leader 3. A fixed lh wheel 39a to 39d is mounted on a shaft, and a rope body 37 with one end 37a fixed to the support frame 32 is attached to a movable pulley 38a and a fixed pulley 39a.
- Moving pulley 38c - Moving pulley 38d Constant rolling 39b - Moving pulley 38b → Fixed rolling 39c → Fixed rolling pulley 39d in order The auger machine 4 is raised and lowered by pulling in or letting out the cable body 37 by forward and reverse rotation of the auger machine 4. According to this lifting device, there is no need to provide a hydraulic cylinder as in the previous embodiment. Since an existing winch can be used, the equipment cost is low.Next, the support mechanism 7 that supports the shaft member 8 in a hanging manner is as shown in FIGS. 1, 13, and 14. , a movable pulley group 44 provided on an underframe 43 provided on the leader 3 such that it can be raised and lowered, a fixed pulley group 46 and a turning pulley 47 provided on the pulley block 6 at the top of the leader 3, and these pulleys. It consists of a cable body 48 which is wound around groups 44 and 46 and is guided to a winch (not shown) on the crane side via a turning pulley 47. According to this support machine 0 side 7, the cable body 48 is When it is paid out, the underframe 43 lowers, and conversely, when the cable body 48 is wound around the winch, the underframe 43 rises.
A cylindrical rotary shaft 52 is supported on the casing 50 fixed to the underframe 43 side via a hair ring 5I.
A port connecting handle 54 is provided at the upper end of the rotating shaft 52 via a gland packing 53. A camp ring 55 is provided at the lower end of the rotating shaft 52, and the shaft member 8 is attached to the camp ring 55. In addition, the intermediate portion of the hose 56 connected to the joint 54 is connected to the tram 57 provided in the marking frame 43, so that the portion between the tram 57 and the connection end 56a to the joint 54 57b is loosened into a U-shape. It should be noted that the drum 57 can be pulled out to the side of the underframe 43, which may cause the port 56 to interfere with the leader 3 and other members during excavation work. The configuration is such that the situation described in B is prevented from occurring. 1. When forming a drilling hole in the ground using the above-mentioned excavator, first, the auger machine 4 is turned off with the chuck mechanism 10 in a non-operating state. The shaft member 8 and the auger screw are driven to apply rotational torque, and from this state, the auger machine 4 and the underframe 43 are lowered in synchronism by the action of the stomach lowering device 5 and the winch on the crane side. As a result, the auger screw and the shaft member are inserted into the ground to a certain depth, but if the ground is difficult to insert in the middle, the chuck mechanism 10 is activated to engage the auger machine 4 with the shaft member 8, and this state From there, the auger machine 4 is lowered to continue drilling with the auger screw.The same operation is then repeated to form an excavation hole of the required depth.Therefore, according to the present invention, the auger machine 4, which is a heavy object, is Since machine 4 is always located in the lower half of league 3 during excavation,
The center of gravity of the excavator is always set at a low position,
Stable work is carried out. To drive foundation pile materials such as concrete or cement mortar into the excavation hole formed as described in Section 2 above,
After drilling is completed, pull the auger screw and proceed to I5 without moving.
: From the state where the HI is positioned at the bottom of the borehole, drive the Orca machine 4 to apply rotational force to the shaft member 8 and the auger screw! While driving the foundation pile material into the excavation hole from the end of the auger screw through the hose 5G, Seaher equipment τ11 and shaft member 8, the auger machine 4 and underframe 43 are raised and the auger screw is driven into the excavation hole. It is extracted from. ” In Section 2, when the auger machine 4 is driven,
As is clear from FIGS. 5 and 6, the rotational output of the electric motor 12 is transmitted to the input gear 15, intermediate float 16, and output gear 17 of the reducer 13 in this order, and from the output gear 17 via the rotating shaft 19. The signal is transmitted to the guide block 14. Therefore, the shaft portion 4A8 held between the four guide rollers 22 rotates together with the guide shaft 14, and its rotational torque is transmitted to the auger 1. In this case, since the claw part +A24 of the chuck mechanism 10 rotates together with the guide block 14, when the chaff/1 mechanism 10 is in the non-operating state (see FIG. 5), the shaft member 8
It is possible to move up and down relative to the auger machine 4. Further, since the ring body 25 of the chuck mechanism 10 is supported by the outer frame member 28 via a bearing 29, the claw member 24 and the ring body 25 rotate together when the chuck mechanism 10 is in the operating state. . Therefore, also in this case, the shaft member 80 rotations can be continued. Next, when the lifting device 5 shown in FIGS. 9 to 11 is used, the insertion force of the auger screw into the ground during excavation is determined by the weight of the auger screw, the shaft member 8, the underframe 43, etc. This, combined with the penetration force into the ground that accompanies the rotation of the auger screw, enables suitable excavation. However, in cases where the ground is hard, a situation may arise in which simply applying the above-mentioned own weight is insufficient. In this case, by utilizing the weight of the lifting device 5, a strong insertion force can be applied to the auger screw, and the auger screw can be inserted into the ground more strongly.
As described above in detail, the present invention is configured such that the auger machine is installed in the underground part of the league, the rotational torque of the cough auger machine is not directly applied to the auger, but is applied to the auger via the shaft member, and 3. Since the auger machine is equipped with a chuck mechanism that phantomly engages the auger machine with the shaft member in its lifting direction, the center of gravity can be set at a low position even if the auger machine is heavy. This makes it possible to achieve stable work (soil that allows continuous work, and when forming deep drilling holes, the center of gravity is set at a low position, which requires a great deal of rigidity of the league). 4. Explanation of the Drawings Figure 1 is an overall side view with a part cut away of an excavator according to an embodiment of the present invention, and Figure 2 is a partially cutaway side view of the excavator according to an embodiment of the present invention. Fig. 3 is a side view of the auger machine, Fig. 4 is a schematic plan view of the auger machine, Fig. 5 is a partially cutaway sectional view of the main parts of the auger machine, and Fig. 6 is a 7 is a cross-sectional view taken along the line v+-vr in the figure, FIG. 7 is a cross-sectional view taken along the line ■-■ in FIG. 5, and FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. , FIG. 9 is a side view of the first lowering device, FIG. 10 is a rear view of the same, FIG. 11 is an explanatory view, FIG. 12 is an explanatory view showing another embodiment of the lowering device, and FIG. 5. A side view of the seal device, a plan view of the 145th strip, and a sectional view of the same in FIG. 15. 3. IJ-ta, 4. Auger machine, 5. Lifting device, 7...Support mechanism, 8...Shaft member, 10...
・Cha-tsuk mechanism. Applicant: Sanwa Kiko Co., Ltd. 1 et al. Procedural amendment (voluntary) December 1981 121-1, Indication of the case: 1988 Patent Application No. 188034 2, Title of the invention: Excavator 3, Each of the amendments to be made Relationship to the incident Colonel Applicant Location (Residence) Name Sanwa Kiko Co., Ltd. 4, Agent Address: 1-1-5, Nagakosai-dori, Amagasaki, Hyogo Prefecture, 660 Date of amendment order (9171')
6. “Claims” and “Detailed Description of the Invention” of the specification to be amended.
Each column. 7. Contents of the amendment Yoshiori (1) in the attached sheet, the scope of claim 1 of the full text corrected specification dated January 17, 1980 is corrected as shown in the attached sheet. (2), page 14, line 17 to page 15, line 9 of the same book, ``It can be inserted.As detailed above, ... its small size,
Weight reduction is achieved. "can be inserted." As described above, according to the present invention, the auger screw is connected to the lower end of the shaft member supported by the league so as to be able to move up and down, and while transmitting rotational force to the shaft member. Since the auger machine, which can be raised and lowered relative to the shaft member, is installed in the middle or lower half of the league, the center of gravity can be set at a low position even if the auger machine is heavy. This makes it possible to continue stable work, and when forming deep drilling holes, the center of gravity is set at a lower position, which eliminates the need for large rigidity of the league. According to the present invention, a chuck mechanism is provided that engages the auger machine with the shaft member in the vertical direction without inhibiting the rotation of the shaft member. Since the auger machine is provided with the auger machine, the weight of the auger machine is applied to the shaft member, thereby further increasing the digging force of the auger screw.Furthermore, according to the present invention, the auger machine is connected to the shaft member. Since the auger screw is removable, it is possible to sequentially attach the auger screw to the shaft member according to the depth of the excavation hole.This is corrected as J.The above claims r fil, league. An auger screw 7 is attached to the lower end of the shaft member supported so as to be freely raised and lowered, and an auger machine that can be raised and lowered relative to the shaft member while transmitting rotational force to the shaft member is mounted in the middle of the league. An excavator comprising a chuck mechanism provided on the auger machine so as to be movable up and down in the lower half of the auger machine and engage the auger machine with the shaft member in the up-and-down direction without inhibiting the rotation of the shaft member. (2) The excavator according to claim (1), wherein the support mechanism for supporting the shaft member in a league so that it can be raised and lowered is separated from the Nioga machine, and the support mechanism is provided on the top of the track plate material. .j

Claims (2)

[Claims] (1) An auger inserted into the ground can be connected to the lower end of a shaft member that is supported by the league so that it can be raised and lowered, and can be raised and lowered relative to the shaft member while transmitting rotational force to the shaft member. Possible ogre machines in the middle or bottom 1 of the above leagues! , the auger machine is provided with a chuck mechanism that can be freely raised and lowered on the shaft member, and that holds the auger machine against the shaft member in the vertical direction without interfering with the rotation of the shaft member. excavator. (2) The excavator according to claim (1), wherein the auger machine is separated from the support mechanism that supports the shaft member in a league so that it can be raised and lowered, and the support mechanism is provided at the top of the league.