JPH05311982A - Caisson type foundation construction machine - Google Patents

Abstract

PURPOSE:To make it possible to execute excavation work into a vertical hole such as a caisson type pile foundation, etc., by a caisson type pile foundation construction machine suspended from a self-running crane capable of running on the ground, trimming work of a projection of an excavation surface, concrete spraying work, etc., quickly and efficiently, and to execute construction work safely. CONSTITUTION:A turning frame 9 mounted in a rotatable manner is loaded under a hanger holder 8 with a griper 15 suspended into a caisson from a traveling crane on the ground. An excavator 10 is loaded under the turning frame so that a cutter section 11 thereof can be moved in the direction of a hole diameter or in the vertical direction. A drill is so loaded to a side space section of the excavator that a boring direction of the drill can be changed, and a control room 13 is provided to the side space section. A concrete spray nozzle is loaded to the bottom of the control room in a turnable manner. A liner plate mounting arm instead of the spray nozzle can be loaded to the bottom of the control room in a detachable manner.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention is a deep foundation foundation suitable for excavation construction for efficiently constructing a deep foundation foundation pit when constructing columns for expressway bridges in mountainous areas. With regard to the construction machine, especially by spraying concrete on the inner wall of the deep foundation foundation drilling hole, a concrete layer for wall protection can be easily formed, and even hard rock such as bedrock can be efficiently excavated. For deep foundation foundation construction machine to do.

[0002]

2. Description of the Related Art Conventionally, excavation work for deep foundation holes has been developed as a construction method by human labor, but it is often a laborious work due to human labor work such as breaker noise in the mine and discharge of mining earth and sand, There are many accidents of falling and crashing when working in deep holes, and it is difficult to secure a labor force because it involves dangerous work. Moreover, since the rate of accidents is high in the excavation work for deep foundation foundation pits, the development of construction machines is desired. Therefore, diversion of construction machinery for general construction is considered as an alternative to manual construction, and attempts are being made to develop a dedicated machine that reduces the size of general excavation machinery. There is a particular demand for excavation equipment that can be used for underground operations while being operated or monitored.

As a basic excavation method of this kind, a gate-type crane is installed on a foundation constructed on a flat surface disclosed in Japanese Patent Publication No. 59-45071, and an excavator is assembled in the gate-type crane to construct a gate-type crane. With the guide pipe supported on the crane, lower the excavator to excavate the earth and sand, and as the excavation progresses, install a liner plate on the upper edge of the skin plate that is in contact with the inner surface of the excavation hole. A basic excavation method for a steel tower or the like is known in which the excavator is pulled up after being replenished to form an excavation hole having a predetermined diameter and a predetermined depth.

In this foundation excavation method, a portal crane is installed on a foundation constructed on a level ground, an excavator is assembled in the portal crane, and the excavator is supported by a guide pipe with respect to the portal crane. With the excavator down, excavate the earth and sand, and as the excavation progresses, add a liner plate to the upper end of the skin plate that is provided around the excavator so as to contact the inner surface of the excavation hole. Since the method of pulling up the excavator after the formation of the excavation hole, according to the basic excavation method described above, the excavator can be reliably lowered using the guide pipe, and furthermore, the collapse of the inner surface of the excavation hole is caused by The skin plate and the liner plate can surely prevent the excavation work from being performed efficiently and easily.

[0005]

However, the deep foundation is generally as small as 2 m to 5 m in diameter, and the maximum depth is 30 m.
Since it is a pit with a special condition of m, it is difficult to efficiently excavate by remodeling or converting general construction machinery. In addition, excavation capacity is insufficient only by downsizing a general construction machine, which causes a problem in work efficiency. Furthermore, since deep foundations cover a wide range from soil foundations to hard rocks, it is almost impossible to excavate each soil with a single machine, and there is a problem in work efficiency.

In the basic excavation method for steel towers disclosed in Japanese Patent Publication No. 59-45071, the liner plate 22 is assembled by a person inside the excavation hole 26 in order to prevent the wall surface of the excavation hole from collapsing. Iki, vertical hole 26
When the excavation work is completed, the guide pipe 19, the guide pipe fixing device 20, the guide pipe elevating device 21, the excavation scraping bucket 12, the breaker 18, the drifter 23, etc. are pulled into the excavation hole 26 by a person and then pulled up. Therefore, the work in these drill holes has many serious accidents such as dropping and crashing, and there is a serious drawback that the work is dangerous.

The present invention has been made in view of the above circumstances, and excavation work and excavation in a deep foundation pit by a deep foundation construction machine suspended from a mobile crane that can freely travel on the ground. It is an object of the present invention to provide a deep foundation construction machine that can quickly and efficiently carry out the work of hitting the convex portion of the surface and the wall support work such as spraying concrete, and the construction work is safe.

[0008]

In order to achieve the above-mentioned object, the present invention is rotatably mounted under a suspension platform with a gripper that is suspended from a mobile crane on the ground into a deep digging pit. A swivel frame is attached, and an excavator is attached to the lower part of the swivel frame such that the cutter portion of the excavator is movable in the hole radial direction and the vertical direction. A deep foundation construction machine characterized in that it is mounted so that it can be changed, and that an operation room is arranged in the side space of the operation room, and that a concrete spray nozzle is swingably installed at the bottom of the operation room. In addition, a slewing frame that is rotatably attached is installed under a suspension frame with a gripper that is hung from a mobile crane on the ground in the deep digging pit, and the excavator has its cutter part at the bottom of the slewing frame. Hole radial direction and lead Mounted so as to be movable in the direction, a rock drilling machine is mounted in a lateral space of the excavator so that the drilling direction can be changed, and an operation room is disposed in the side space, and the bottom of the operation room is installed. It is a deep foundation construction machine with a liner plate mounting arm attached so that it can expand and contract and swing.

Further, according to the present invention, particularly in a deep foundation construction machine suspended from a mobile crane on the ground in a deep excavation pit, its tip can rotate near the center of a slewing frame rotatably mounted. A pillar is erected downward, and a spray nozzle is swingably disposed on the pillar, and a suspension frame is erected on a self-propelled frame that can freely travel on the ground. It is characterized in that a pulley is attached to the central top portion and a deep foundation construction machine is suspended near the center of the self-propelled frame by a winch arranged on the self-propelled frame.

[0010]

Next, the operation of the present invention will be described. First, a suspension frame with a pulley attached to the central top is erected on a self-propelled frame that can run on the ground, and the self-propelled frame on the ground is used for a highway bridge. It is placed on the above-mentioned self-propelled frame on a predetermined deep foundation foundation excavation hole for constructing columns etc., after the earth removal work by the clam shell etc. in the deep foundation foundation excavation hole is completed. The winch is used to move the pulley on the self-propelled frame from near the center of the self-propelled frame to suspend the deep foundation foundation construction machine with wires in the desired deep foundation foundation excavation hole. Then, after reaching the specified position, the gripper of the suspension frame is extended to fix the frame to the hole wall, and then the excavator mounted on the revolving frame rotatably attached to the frame is used to make the vertical hole excavation surface. The convex portion of the above is hit over the entire surface of the hole, and then the concrete is sprayed onto the excavated surface by using the spray nozzle equipped on the deep foundation construction machine to form the concrete layer for wall protection. In the case of a deep foundation construction machine equipped with a retractable and swingable liner plate mounting arm at the bottom of the operation room, use this liner plate mounting arm at the bottom of the operation room to apply liner plates to all wall surfaces. Perform the assembly work of.

In this way, when the excavation work and the wall protection layer formation work proceed, and it becomes impossible to excavate with an excavator such as rock or a clamshell, or when the excavation efficiency becomes extremely poor, When it is necessary to make holes for blast holes in the deep foundation foundation excavation hole, use the rock drilling machine equipped with the deep foundation foundation construction machine to make holes such as blast holes. Therefore,
Safely perform all the work such as hitting the convex part of the excavation surface in the deep foundation foundation vertical hole, spraying concrete on the excavation surface, assembling the liner plate, and drilling work such as blast holes You can

[0012]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 4 show a deep foundation construction machine suspended by a self-propelled frame on the ground according to this embodiment. When constructing columns for highway bridges in mountainous areas etc. in Fig. 1, excavate a hole with a shovel or backhoe at a predetermined place of the planned site for excavating the deep foundation foundation hole and install segment 1 , Secure the surrounding area with concrete. The mobile suspension device 4 equipped with the suspension frame 3 on the self-propelled frame 2 capable of traveling on the ground by a crawler or the like is transferred to the deep foundation digging pit P thus formed. Then, the pair of winches 5 arranged on the self-propelled frame 2 causes the deep foundation work machine 7 to be installed from the suspension frame 3 to the wire 6 in the segment 1 of the hole where the earth removing work has been completed from the vicinity of the center of the self-propelled frame 2. Be suspended. Reference numeral 2 a is an outrigger of the mobile suspension device 4. The mobile suspension device also includes a general mobile crane and the like.

As shown in FIGS. 3 and 4, this deep foundation foundation construction machine 7 has a rotatable swivel frame 9 mounted below a suspension frame 8 suspended by the wire 6, and the swivel frame 9 An excavator 10 is attached to the lower part thereof such that a cutter portion 11 thereof is movable in a hole radial direction and a vertical direction,
Further, a rock drilling machine 12 is mounted in the lateral space of the excavator so that the drilling direction can be changed, and an operation chamber 13 is fixedly installed in the side space, and a concrete spray nozzle is provided at the bottom of the operation chamber 13. 14 is mounted so that it can swing up and down and rotate. Therefore, after fixing the deep foundation foundation construction machine 7 to the protective wall 16a by the gripper 15 of the deep foundation foundation construction machine 7, the excavator 10 equipped on the deep foundation foundation construction machine 7 is secured.
Is operated in the operation room 13 to move the excavator 10 up and down, or the swivel frame 9 is swung to hit the convex portion on the entire surface of the excavation wall 16, and similarly the concrete spray nozzle 14 is used. Then, a concrete spraying operation is performed on the entire circumference of the excavation surface 16 to form the protective wall 16a. When it is necessary to drill holes such as blast holes, the rock drill 1
2 is selected, while the swivel frame 9 is swung, a hole for blasting is drilled on the bottom of the hole to continuously excavate the deep foundation digging pit P.

Further, FIGS. 5 to 7 show the details of the excavator 10, the concrete spray nozzle 14 and the rock drill 12 which are mounted on the revolving frame 9 of this embodiment. As shown in FIG. 10 is a swivel frame 9 and a piston 17
Is attached so as to be rotatable in the hole radial direction, and the cutter portion 11 can be expanded and contracted in the vertical direction by the cylinder 10a of the excavator 10, and the cutter portion 11 is further rotated by the turning frame 9 in the circumferential direction of the digging pit. Can also be rotated. Therefore, after the cutter portion 11 of the excavator 10 is brought into contact with the excavation wall surface 16 and moved in the vertical direction by the cylinder 10a to hit the convex portion, the turning frame 9 is rotated by a predetermined amount to finish the vertical direction in the same manner. Further, as shown in FIG. 6, the concrete spraying nozzle 14 is attached to a nozzle swinging device 18 swingably attached to the bottom of the operation chamber 13, and a concrete spraying direction is vertically changed by a piston 19. Furthermore, since the spouting direction of the concrete can also be moved in the circumferential direction of the excavation pit by the turning of the turning frame 9, the turning frame 9 is rotated while swinging the spray nozzle 14 to rotate the turning frame 9 over the entire circumference of a predetermined width and a predetermined thickness. The spray protection wall 16a is formed over. At this time, the concrete to be sprayed is sent by the pressure feed pipe 20.

Further, as shown in FIG. 7, the rock drill 12 is
It is attached to the revolving frame 9 by a piston 21 so as to be rotatable in the hole radial direction, and also supports 22 of the rock drill 12
Can be expanded and contracted in the vertical direction by the cylinder of, and the rock drill 12 can also rotate in the circumferential direction of the excavation pit P by turning the turning frame 9, so that the rock drill 12 is moved to the operating position and mounted in the radial direction of the hole. Drill holes, then swivel frame 9
Turn to change the position and drill a predetermined number of holes. Therefore, the support 22 of the rock drill 12 can be expanded and contracted in the vertical direction and can also be rotated in the circumferential direction by the turning of the turning frame 9, so that the blast hole can be drilled anywhere on the hole bottom 23.
Reference numeral 9a is a swivel bearing for the swivel frame 9. After a certain amount of excavation is completed in this way, the gripper 15 of the suspension frame 8 is loosened and returned to a predetermined position, the whole deep foundation work machine 7 is pulled up to the ground by the wire 6, and is made to stand by at a predetermined place. The self-propelled clamshell 17 capable of traveling on the ground is moved to the deep foundation foundation excavation pit P by the caterpillar shown in (1), etc., and the clamshell 17 performs earth removal work in the excavation hole.

A spray nozzle 14 is provided at the bottom of the operation chamber 13.
FIG. 8 shows another embodiment in which a liner plate mounting arm 24 is provided instead of the above so as to be expandable and contractible. In this embodiment, a liner plate 25, whose circumference is divided into four at the bottom of the operation chamber 13, is carried to the excavation wall 26, and the expandable / contractible liner plate mounting arm 24 is rocked by the piston 27 for assembly, and the swivel frame 9 is also used. This liner plate mounting arm 24 is moved to the excavation pit P
Since it can also rotate in the circumferential direction, the liner plate 25
Can be attached to any part of the bore wall 26. Further, in another embodiment shown in FIG. 9, a supporting column 35 is erected downward at the center of the revolving frame 9, and a rotatable part 2 is provided at a lower end 28 thereof.
9 is provided and the spray nozzle 14 is attached to the column 35, and FIG. 10 is an enlarged explanatory view of the lower part of the column.

Another embodiment is shown in FIGS. 11 and 12. In this embodiment, an operating room 30 is rotatably mounted below a suspension frame 8 suspended by a wire 6, and a retractable excavator 10 equipped with a cutter 11 on one side of the operating room 30.
Is mounted so as to be rotatable both in the hole radial direction and in the vertical direction, and on the opposite side of the excavator 10, two telescopic arms 31 and 32 are provided on the upper and lower sides.
The rock drilling machine 12 is mounted on a support body 22 supported by and capable of expanding and contracting in the vertical direction. Further, at the lower portion of the operation chamber 30, a column 35 having a rotatable portion 34 at a lower end portion 33 thereof is projected. Reference numeral 36 is an entrance / exit door of the operation room 30. Therefore, in this embodiment, the operation room 30 and the excavator 1
0, because the rock drill 12 rotates together, these operations can be performed easily from the operation room 30, and the work of hitting the convex portion and the work of blasting for blasting can be accurately monitored while visually observing. it can.

[0018]

As described above, according to the deep foundation construction machine of the present invention, the winch arranged on the movable self-propelled frame moves from the pulley on the self-propelled frame to the vicinity of the center of the self-propelled frame. After passing through, the deep foundation foundation construction machine is hung with wires in the desired deep foundation foundation excavation mine, and when it reaches a predetermined position, the gripper of the suspension frame is extended and the frame is fixed to the hole wall. Using the excavator mounted on the slewing frame that is rotatably mounted, it is possible to hit the convex portion of the excavation surface inside the mine all over the hole, and the spray nozzle equipped on the deep foundation foundation construction machine. It is possible to easily form a concrete layer for wall protection by performing concrete spraying work on the excavated surface using. In addition, when the excavation work and the wall protection layer formation work progress, and it becomes impossible to excavate with an excavator such as bedrock or clamshell, or when the excavation efficiency becomes extremely poor, deep foundation foundation excavation is performed. You can drill holes such as blast holes using a rock drill in the mine without pulling the deep foundation foundation construction machine to the ground, so construction can be performed efficiently and for highway bridges in mountainous areas. It is ideal for excavating deep foundation pits when constructing columns, etc., and can perform a series of work quickly and safely,
Furthermore, the effect of releasing the laborious work and greatly improving the working environment is great.

Further, in a deep foundation construction machine equipped with a liner plate mounting arm instead of the spray nozzle at the bottom of the operation room, the liner plate mounting arm can be used to assemble the liner plate on the hole wall surface. It can be done very easily. And since all of these operations can be performed with the naked eye from the operation room or by remote control from the ground, the work can be reliably performed without raising the deep foundation work machine to the ground, and All underground work can be done safely and efficiently.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional explanatory view of the entire embodiment.

FIG. 2 is a side view of the above-ground portion of the present embodiment.

FIG. 3 is a perspective view of the present embodiment.

FIG. 4 is a plan view of FIG.

FIG. 5 is a side view of the present embodiment.

FIG. 6 is another side view of FIG.

FIG. 7 is another side view of FIG.

FIG. 8 is a side view of another embodiment.

FIG. 9 is a side view of another embodiment.

FIG. 10 is an enlarged side view of a main part of FIG.

FIG. 11 is a perspective view of another embodiment.

12 is another side perspective view of FIG. 11. FIG.

FIG. 13 is a vertical cross-sectional explanatory view of a clam shell.

[Explanation of symbols]

 1 Segment 2 Self-propelled frame 3 Suspended frame 4 Mobile suspension device 5 Winch 6 Wire 7 Deep foundation foundation construction machine 8 Suspended stand 9 Swivel frame 10 Excavator 11 Cutter 12 Rock drilling machine 13, 30 Operation room 14 Concrete spray nozzle 15 Gripper 16,26 Excavation wall 16a Protective wall 17,19,21,27 Piston 18 Nozzle swinging device 20 Concrete pumping pipe 22 Support 23 Hole bottom 24 Liner plate mounting arm 25 Liner plate 28,33 Lower end 29,34 of column Rotatable part 31, 32 Telescopic arm 35 Support post P Deep foundation foundation excavation pit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Ito 518 Komagaki, Nagareyama City, Chiba Mitsui Construction Co., Ltd. Technical Research Institute (72) Yutaka Miura 2-1-1 Nihombashi Muromachi, Chuo-ku, Tokyo Stock Company Mitsui Miike Works (72) Inventor Satoshi Hamada 2-28 Asahi-cho, Omuta City, Fukuoka Stock Company Mitsui Miike Works Miike Works (72) Inventor Masahiro Nonaka Nihombashi Muromachi 1-1-1, Chuo-ku, Tokyo No. Mitsui Miike Manufacturing Co., Ltd. (72) Inventor Mitsuhiro Mioda 2-28 Asahi-cho, Omuta-shi, Fukuoka Stock Company Mitsui Miike Manufacturing Miike Plant

Claims (4)

[Claims] 1. A slewing frame rotatably mounted under a suspension frame with a gripper that is suspended from a mobile crane on the ground in a deep digging pit, and an excavator is mounted below the slewing frame. The cutter part is mounted so as to be movable in the hole radial direction and the vertical direction, the rock drill is installed in the side space part of the excavator so that the drilling direction can be changed, and the operation room is arranged in the side space. A deep-foundation foundation construction machine, characterized in that a concrete spray nozzle is swingably attached to the bottom of the operation room. 2. A slewing frame mounted rotatably is mounted below a suspension frame with a gripper that is suspended from a mobile crane on the ground in a deep digging pit, and an excavator is mounted below the slewing frame. The cutter part is mounted so as to be movable in the hole radial direction and the vertical direction, the rock drill is installed in the side space part of the excavator so that the drilling direction can be changed, and the operation room is arranged in the side space. A deep-foundation foundation construction machine characterized in that a liner plate mounting arm is installed at the bottom of the operation room so that it can expand and contract and swing. 3. In a deep foundation construction machine suspended from a mobile crane on the ground in a deep excavation pit, a support column whose tip is rotatable is provided near the center of a slewing frame rotatably mounted. 2. A blasting nozzle is erected so as to be erected, and a spray nozzle is swingably disposed on the column.
Or the deep foundation construction machine described in 2. 4. A suspension frame is erected on a self-propelled frame which can freely travel on the ground, a pulley is mounted on the central top portion thereof, and a winch disposed on the self-propelled frame near the center of the self-propelled frame. The deep foundation foundation construction machine according to claim 1 or 2, wherein the deep foundation foundation construction machine is suspended.