JPH0913880A - Taking-out system and taking-out device for underground excavated earth - Google Patents

Abstract

PURPOSE: To continuously and efficiently take out underground excavated earth generated in relation to a building work or a civil engineering work. CONSTITUTION: Underground excavated earth is collected by use of a plurality of self-travelling collection vehicles 1 and, then, the collected excavated earth is fed to a vertical taking out device 20 vertically suspended from the ground via a feeder 30 laid on the tail section thereof for taking out to the ground, thereby forming a transport system. The vehicles 1 have a drum 5 with a built-in screw shaft on a crawler type self-travelling truck 2 and a hopper 6 integrated with the drum 5. Also, the vehicles 1 are structured to have a loading device with discharge ports 7 at the front and rear ends. The device 20 is installed between an upper frame rack and a lower frame rack 23 so as to be freely jointed for extension in a vertical direction. Also, a plurality of the feeders 30 are projected from the tail section of the device 20 radially and freely rotatably, and the excavated earth is directly fed to the device 20 via the feeders 30 from the vehicles 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading system for underground excavated soil in construction work of a building structure, and an unloading device constituting this system.

[0002]

2. Description of the Related Art In the construction work of a building structure that occupies an underground portion, the work of carrying out excavated soil generated by excavating the underground portion has a great influence on the entire construction period. For example, the construction of a building structure by the upside down construction method shortens the construction period by constructing the above-ground portion and the underground portion in parallel. Therefore, in carrying out such a construction method, it is a technical subject that greatly influences the characteristics of this construction method as to how to carry out the earth and sand generated by excavation of the underground portion to the ground.

Conventionally, as a method and means for carrying out underground excavated soil, a method using a combination of a clamshell method, a vertical carrying means using a pan or a bucket, and a horizontal carrying means using a belt conveyor is generally adopted. Target.

[0004]

By the way, the former clamshell method has a great difficulty in its efficiency. In particular, the deeper the excavation depth is, the lower the carrying-out efficiency is, and the continuous carrying-out capacity is limited. Furthermore, in the case of using the reverse construction method, the installation position of the clamshell is limited, and in some cases it is necessary to deploy multiple clamshells, and the construction cost has a large impact, so there is nothing to see in the actual results at present. . In this respect, the latter method of combining vertical unloading means consisting of pans or buckets and the horizontal conveying means consisting of a belt conveyor enables continuous unloading compared with the former clamshell method, and is several times more efficient. The reality is that they are outstandingly used and are often used.

However, in the method of combining the vertical carry-out means and the horizontal carry-out means, it is necessary to expand the horizontal carry-out means according to the progress of construction. That is, as the area of excavation work is expanded, it is necessary to additionally install a belt conveyor as a horizontal carry-out means for transferring the excavated soil to the vertical transport means.

[0006] However, in order to additionally install the horizontal conveying means composed of this belt conveyor, not only a considerable amount of manpower is required, but in the case of the reverse construction method, the additional work is limited to a limited space in the underground part. Must be done in-house,
Therefore, it takes a lot of trouble to set up the work. As a result, there is a big problem in applying or spreading the above-mentioned reverse construction method to a large-scale construction work. The present invention
The present invention has been developed for the purpose of providing an unloading system for underground excavated soil that solves the conventional drawbacks and problems, and an unloading device that constitutes this unloading system.

[0007]

As a means for achieving the above object, the present invention first collects excavated soil generated by excavation work in an underground portion using a self-propelled vehicle. On the other hand, a vertical unloading device was hung from the ground, and a plurality of feeders for supplying excavated soil from the self-propelled vehicle to the vertical unloading device were rotatably overhanged at the tail portion of the vertical unloading device. .

Then, the excavated soil collected by the mobile accumulation vehicle is directly unloaded onto the feeder, and the excavated soil is transferred to the vertical unloading device via the feeder to continuously carry the excavated soil to the ground. There is a system. The mobile integrated vehicle is configured as a carry-out system in which a plurality of vertical carry-out devices are arranged.

Further, the self-propelled vehicle, which is the first constituent element of the carry-out system, has a crawler type, that is, a crawler type self-propelled carriage so that it can stably run on the underground excavation roadbed. Then, on this self-propelled carriage, a drum having a screw shaft, which is wound around a rotating shaft and rotatable freely in the normal and reverse directions, and a hopper communicating with the drum are integrally mounted on the drum, and a front end is attached. The bottom surface of the rear portion and the rear end portion is configured as a loading device for excavated soil having a discharge port for excavated soil, and the loading device is mounted on the self-propelled carriage to configure a self-propelled vehicle. Further, the loading device itself is equipped with the loading device itself so that it can be dumped up freely on the self-propelled trolley in order to cope with a dead stock phenomenon of excavated soil as a load and to facilitate the discharge. That is, the screw shaft is rotated in a dumped-up state so that the dead stock can be eliminated.

Further, the loading device in the self-propelled vehicle is mounted on a self-propelled truck so that it can be lifted up freely so that the unloading work of the excavated soil can be easily performed on the feeder, that is, the belt conveyor. . In particular, the drum including the screw shaft that constitutes the loading device is extended in the front-rear direction from the self-propelled carriage.
That is, the self-propelled trolley can be brought close to the feeder, and the discharge port at the front end or the rear end of the overhanging loading device can be directly above the feeder. In other words, the excavated soil can be unloaded directly to the feeder.

Next, a second component of the carry-out system.
The vertical unloading device, which is a component of the above, is configured as a vertical unloading device in which buckets or pans are mounted on an endless chain in multiple stages. Then, in the case of the pillar member installed on the ground and the reverse striking method, it was installed as a structure in which the upper frame cradle and the lower frame cradle supported by the structure columns can be vertically vertically added.

Further, the lower frame receiving stand is vertically movably supported on the upper frame receiving stand so that the lower frame receiving stand can be lowered according to the excavation depth. The pedestal itself is a pillar member that supports the upper frame pedestal through a plurality of U bolts on the vertical plate of the bracket formed by integrally connecting a vertical plate and a horizontal plate, and in the case of the reverse construction method. Is removably fastened to the side of the true column that constitutes the body of the underground part, and is supported on this fastened bracket.

Further, the feeder, which is the third component provided in the tail portion of the vertical unloading device, is constituted by a belt conveyor, and a plurality of groups are radially extended from the tail portion of the vertical unloading device and can be swung freely. It is characterized by having a deployed configuration.

[0014]

Since the present invention is configured as described above, the underground portion is excavated by an excavator such as a backhoe, and the excavated soil is directly loaded into the loading device of the self-propelled vehicle and the vertical unloading device is also used. If the unloading soil is unloaded to the feeder that is radially and swivelly extended from the tail part, the excavated soil can be continuously lifted up by the vertical unloading device, and can be efficiently carried out of the site. That is, it is possible to develop an efficient unloading work without adding a horizontal conveyor such as a belt conveyor according to the expansion of the excavation area as in the conventional case. In particular, by making the number of self-propelled integrated vehicles and the number of feeders multiple, it became possible to develop continuous unloading work.

[0015]

EXAMPLES Further, a concrete explanation will be given based on an example in which the carry-out system according to the present invention and the carry-out device constituting the carry-out system are applied to a construction site by a reverse construction method. First, Fig. 1 shows the building construction work by the reverse construction method.
It is a conceptual block diagram at the time of applying the carrying out system of this invention. 1 is a self-propelled vehicle which is the first component of the unloading system, 20 is a vertical unloading device which is the second component, and 30 is a vertical unloading device 2 which is the second component.
This is a feeder consisting of a belt conveyor arranged in the tail section of No. 0, which is the third component. In addition, 90 is a structure true pillar of the frame constructed by the upside down construction method, 21 is an upper frame cradle installed in a place which coincides with the ground plane between the true pillars 90 and 90. Reference numeral 22 is a base mount that is erected on the upper frame support 21. Reference numeral 23 denotes a lower frame cradle which is erected between the true columns 90 and 90 in the underground portion, and is for vertically arranging the vertical carry-out device 20.

That is, in FIG. 1, excavation of an underground portion is performed by a backhoe (not shown), the excavated soil is directly loaded from the backhoe to the self-propelled vehicle 1, and the loaded excavated soil is vertically carried out. 20 is unloaded on a feeder 30 composed of a belt conveyor arranged in the tail portion, and the excavated soil is sent to the vertical carry-out device 20 composed of a bucket or a pan through the feeder 30 to continuously excavate the excavated soil from the underground portion to the above-ground portion. 2 shows the configuration of a system designed to be lifted up.

Reference numeral 40 shown in FIG. 1 is a hopper for temporarily stocking the excavated soil lifted up by the vertical carry-out device 20 provided on the ground. The excavated soil was transferred from the hopper 40 to the delivery facility 60 via the delivery belt conveyor 50, and the excavated soil was transported to the outside of the loading site in the delivery facility 60 to the dump truck 70, which is the final delivery means.

FIG. 2 is a side view showing a schematic structure of the self-propelled vehicle 1, and FIG. 3 is a rear view thereof. As shown, the self-propelled vehicle 1 uses a crawler-type self-propelled cart 2 having a swivel base 3. Then, a drum 5 having a screw shaft 4 capable of freely rotating in the normal and reverse directions is installed on the swivel base 3, a hopper 6 communicating with the drum 5 is integrally mounted on the drum 5, and a front end portion and At the rear end, a loading device 8 having excavated soil discharge ports 7 and 7 is mounted so as to be freely dumped. Reference numeral 9 is a fulcrum that serves as a fulcrum for dumping up the loading device 8.

The reason why the loading device 8 is mounted so as to be freely dumped up is that when the excavated soil in the loading device 8 causes clogging or the like in the screw shaft 4 and interferes with the discharging, the obstacle is eliminated. This is to allow it. Further, the reason why the drum 5 which constitutes the loading device 8 is mounted so as to project in the front-rear direction of the self-propelled carriage 2 is that the accumulated excavated soil is placed in the tail portion of the vertical unloading device 20 with a feeder 30 (belt conveyor). This is to facilitate the work when paying out. That is, from the discharge port 7 on the front end side or the discharge port 7 on the rear end side, the paying-out work to the feeder 30 can be coped with according to the situation of the site, and the discharging work, that is, the feeder 30.
It has a structure that enhances the functionality of the payout work. Particularly, the paying-out work from the front end side can be performed from the driver's seat while visually checking the paying-out situation, and as a result, the discharging work of the excavated soil can be more efficiently developed. Therefore, as a matter of course, the screw shaft 4 contained in the drum 5 is configured to be rotationally driven forward and backward as described above.

FIG. 4 shows the loading device 8 which is a self-propelled vehicle 1 for excavating soil, and a swivel base 3 for a self-propelled trolley 2.
It is a side view which shows the structure of the means for making it lift up. As shown in the drawings, in the embodiment, hydraulic cylinders 3 are provided on the front and rear sides and on the left and right sides of the swivel base 3 which constitutes the self-propelled carriage 2.
A lift-up mechanism consisting of 2 was installed. That is, the loading device 8 is supported via the lift-up mechanism, and the loading device 8 itself can be lifted by operating the hydraulic cylinder 32. The reason is that the loading device 8 is lifted up via this lift-up mechanism in accordance with the convenience of the above-mentioned discharging work, and the discharge port 7 level either before or after the excavated soil in the loading device 8 is set to the height of the feeder 30. In order to prevent the excavated soil from being scattered around, it is possible to accurately and efficiently dispense the soil to the feeder 30.

FIG. 5 shows a self-propelled vehicle 1 for excavating soil from the front end side of the self-propelled vehicle 1 to the feeder 30, that is, the belt conveyor, when the work is dispensed.
FIG. 4 is a plan view showing the positional relationship with the cargo device 8 in FIG.
As shown in the figure, since the front end of the drum 5 of the loading device 8 is located on the right side of the driver's seat of the self-propelled vehicle 1, it is possible to visually check the delivery operation.

Although not shown in the drawings, the turning, dumping or lifting of the loading device 8 and the driving means of the screw shaft 4 are not shown in the drawings, but a hydraulic mechanism or a motor which has been generally used in the past is used. And a series of operation controls are configured to be remotely operated in the driver's seat.

FIG. 6 is a side view showing the structure of the vertical carry-out device 20, the feeder 30 arranged on the tail portion of the vertical carry-out device 20, and the connection with the underground skeleton side in the construction process. First, the vertical carry-out device 20
As described with reference to FIG. 1, the upper frame cradle 21 is provided at a position corresponding to the ground plane between the structural columns 90 and 90 forming the frame, and the lower frame cradle is provided between the structural columns 90 and 90 in the underground part. 23 was detachably supported. In addition, 22 is the upper frame receiving stand 2 as described above.
It is a base mount installed on 1.

Then, two or four endless chains 24 and 24 are vertically hung between the upper frame receiving base 22 and the lower frame receiving base 23, and a multi-stage is provided between both endless chains 24 and 24. Specifically, the bucket or pan 25 was attached, and the vertical unloading device 20 composed of a chain drive type lift was constructed and installed.

Further, it is necessary to lower the tail part of the vertical carry-out device 20 according to the progress of the excavation work in the underground part.
That is, it is necessary to extend the joint by extending it downward. Therefore, the lower frame mount 23 is replaced by the upper frame mount 21.
I was able to raise and lower freely. FIG. 7 is an embodiment showing the structure of the lifting means. A winch 27 was installed on the upper frame cradle 21 as shown. Specifically, as shown in the drawing, winches 27 were installed at the four corners of the upper frame cradle 21. The hoisting wire 27a of the winch 27 is linked to the four corners of the lower frame pedestal 23, and the winch 27 is driven to vertically move the lower frame pedestal 23. By the way, the phantom line in FIG. 7 shows the operating state when the lower frame cradle 23 is lowered by that amount when the excavation depth is one floor underground.

Next, the feeder 30 for receiving the excavated soil carried in by the self-propelled vehicle 1 and sending it to the vertical unloading device 20 is constituted by a belt conveyor as shown in the plan view of FIG. 6, and The base end side of this belt conveyer was pivotally supported on the lower frame support 23, and the tip end side was pivotally supported by using the pivotal support portions 31 and 31 as fulcrums.

In this embodiment, the excavated soil sent by the feeder 30 composed of the belt conveyor is used for the bucket or pan 25 of the vertical unloading device 20.
6 and FIG. 7, a feeder comprising a belt conveyor for relaying or a screw feeder 26 in the embodiment is installed between the feeder 30 and the tail portion of the vertical carry-out device 20 without directly transferring the sheet to the feeder. did. Then, it is configured to supply to the bucket or the pan 25 of the vertical carry-out device 20 via the screw feeder 26. The reason is that when the excavated soil is supplied directly from the feeder 30 composed of a belt conveyor to the bucket or the pan 25 of the vertical carry-out device 20, the excavated soil scatters in the surroundings, leading to a reduction in the transfer efficiency. This is not only a cause of trouble in the operation of the drive mechanism.

In the embodiment, the feeder 30 composed of the belt conveyor has a vertical carry-out device 20 as shown in FIG.
I deployed two of them. Of course it may be more. Reason,
The number of self-propelled stacking vehicles 1 that load the excavated soil and carry it to the vertical unloading device 20 side is set, and the excavated soil from the plurality of units is supplied to the vertical unloading device 20 from each of the plurality of feeders 30. This is so that it can be done.

Further, in the embodiment, the hopper 40 for temporarily stocking the excavated soil lifted up by the vertical unloading device 20 has the frame 41 installed on the base frame 21 as shown in FIGS. 1 and 6. The frame 41 is configured to be supported. A relay belt conveyor 42 is provided between the upper part of the hopper 40 and the vicinity of the upper part of the vertical unloading device 20, and the excavated soil lifted up by the vertical unloading device 20 is first transferred to the relay belt conveyor. It is received by 42 and transferred to the hopper 40 via this belt conveyor 42. Further, as shown in FIG. 1, the excavated soil stocked in the hopper 40 is further transferred to a delivery facility 60 by using a belt conveyor 50 for delivery, and finally the dump truck or the like is transferred from the delivery facility 60. It was configured so that it could be used and carried out of the site.

FIG. 8 is a plan view of FIG.

Further, FIG. 9 shows a lower frame cradle 2 for supporting the tail portion of the vertical carry-out device 20 and the feeder 30.
3 illustrates a structure of a bracket 82 used as a mounting portion for the underground structure true pillars 90 and 90 of FIG. That is, the lower frame cradle 23 described with reference to FIG. 7 is lifted and lowered by using the lifting means, that is, the winch 27, and then the bracket 8 is used as a means for supporting it on the true column 90 side.
2. As described above, the lower frame pedestal 23 is lowered according to the progress of the upside-down construction method, that is, lowered according to the excavation depth, and then the true column 90.
It is necessary to attach and detach between 90 and 90.

Therefore, first, as shown in FIG. 9, the vertical plate 8
A bracket 82 having a horizontal plate 81 integrally attached thereto is provided at 0. Then, the vertical plate 8 in the bracket 82
As shown in FIG. 10, 0 was applied to the side surface of the false column 90, and a plurality of U bolts 83 were used for fastening and fixing. By the way, in the figure, four U bolts 8
3 is arranged in multiple stages, and a double nut 84 is used for tightening. FIG. 11 is a cross-sectional plan view taken along the line XX of FIG.
2 shows the fastening procedure.

In this embodiment, as shown in FIG. 10, a sleeper 85 made of H-shaped steel is attached to a bracket 82 which is fastened to the true post 90, and the lower frame cradle 23 is attached through the sleeper 85. Is so constructed as to be detachably supported between the true columns 90 and 90.

[0034]

The carry-out system for underground excavated soil and the carry-out device constituting the system according to the present invention are configured as described above with reference to the embodiments, and therefore are compared with conventional methods and means for carrying out underground excavated soil. , The following effects can be exhibited. (1) The underground excavation soil is supplied to the vertical unloading device by a self-propelled vehicle, especially multiple self-propelled vehicles, so even if the construction progresses, that is, the expansion of the excavation area, it is always efficient. It is possible to develop a typical excavation soil removal operation. That is, it is not necessary to add a belt conveyor underground as a horizontal transporting means for excavated soil as in the conventional case. As a result, manpower for labor for carrying out excavated soil and work such as setup are reduced, and simplification and omission of the work are promoted. (2) Receiving the excavated soil from the self-propelled vehicle to the vertical unloading device Since I do this via multiple feeders installed at the tail of the vertical unloading device, the number of self-propelled integrated vehicles Therefore, it is possible to cope with, for example, a reverse construction method for a large-scale building structure having a wide excavation area, which can further contribute to shortening the construction period. (3) As the lower frame cradle supporting the tail part of the vertical carry-out device is lowered according to the progress of the upside down construction method, the bracket is fastened in multiple stages with multiple U bolts after the lowering operation. Since it is configured so as to be detachable through the, it is not necessary to attach any temporary objects to the true column. That is, there is no strong influence on the true column. Especially, since the U bolts are arranged in multiple stages and the bracket is fastened to the side surface of the false column, it is possible to hold the lower frame cradle in a stable state with respect to the bracket, and after lowering operation. The bracket itself can be easily moved by loosening the double nut of the U bolt. As a result, the labor and work risk associated with moving and installing the device are avoided, and swift response is possible. (4) Furthermore, a loading device for excavated soil in a self-propelled vehicle that loads excavated soil and unloads it to a feeder in the tail section of a vertical unloading device is installed and installed on a self-propelled carriage so that it can be dumped and lifted up freely. As a result, it is possible to prevent the excavated soil from scattering and falling around during the unloading work of the excavated soil to the feeder, and it is possible to efficiently supply the excavated soil to the vertical unloading device. As a result, by using the unloading system and the unloading device for underground excavated soil according to the present invention, more efficient underground digging soil unloading work can be performed, and in particular, it is possible to apply the reverse construction method for a large building structure, This not only saves labor, but also contributes significantly to the reduction of construction costs.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a concept of a system for carrying out excavated soil according to the present invention.

FIG. 2 is a side view showing a schematic structure of a self-propelled vehicle.

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a side view showing a mechanism for lifting up a loading device in a self-propelled vehicle.

FIG. 5 is a plan view showing a positional relationship between the self-propelled vehicle and the feeder when the excavated soil is discharged from the front end side of the self-propelled vehicle.

FIG. 6 is a side view showing a vertical unloading device and an arrangement of a feeder arranged at a tail portion of the vertical unloading device with respect to an underground skeleton side.

FIG. 7 is a side view illustrating the configuration of the elevating means of the lower frame cradle.

FIG. 8 is a plan view of FIG. 6;

FIG. 9 is a perspective view of a bracket used for attaching the lower frame cradle to the true column.

FIG. 10 is a side view showing a structure of a frame supporting section for the true column of the lower frame frame.

11 is a cross-sectional plan view taken along the line XX of FIG.

[Explanation of symbols]

 1 ... Self-propelled integrated vehicle (excavated soil) 2 ... Self-propelled cart (crawler type) 3 ... Base stand (turning type) 4 ... Screw shaft 5 ... Drum 6 ... Hopper 7 ... Discharge port (excavated soil) 8 ... Load Device (excavated soil) 9 ... Spindle 20 ... Vertical unloading device 21 ... Upper frame cradle 22 ... Base cradle 23 ... Lower frame cradle 24 ... Endless chain 25 ... Pan (bucket) 26 ... Screw feeder 27 ... Winch 30 ... Feeder (Belt conveyor) 31 ... Pivoting part of belt conveyor 32 ... Hydraulic cylinder (lift-up mechanism) 40 ... Hopper 41 ... Frame 42 ... Belt conveyor 50 ... Delivery belt conveyor 60 ... Delivery equipment 70 ... Dump truck 80 ... Vertical plate 81 … Horizontal plate 82… Bracket 83… U bolt 84… Double nut 85… Sleepers 90… True pillar

Claims (6)

[Claims] 1. The underground excavated soil is collected using a self-propelled vehicle, and the collected excavated soil is supplied to a vertical unloading device via a feeder provided at a tail portion of a vertical unloading device vertically installed from the ground. The underground unloading soil unloading system is characterized by unloading to the ground using this vertical unloading device. 2. The underground excavated soil unloading system according to claim 1, wherein the self-propelled vehicle and a plurality of feeders are provided at the tail portion of the vertical unloading device. 3. A self-propelled vehicle, a vertical unloading device, and a unloading device for underground excavated soil, which comprises a feeder, wherein the self-propelled integrated vehicle is mounted on a crawler-type self-propelled trolley in a forward and reverse direction. A drum with a rotatable screw shaft built-in, and a hopper integrally mounted on this drum, and
The loading device has discharge ports on the bottoms of the front and rear ends of the drum, and the loading device is mounted so that it can be dumped up freely.The vertical unloading device is a bucket or pan in an endless chain. A vertical unloading device that is mounted in multiple stages,
It is vertically erected vertically between the upper frame cradle and the lower frame cradle supported by a pillar member installed on the ground, and the feeder is constituted by a belt conveyor, and the feeder of the vertical unloading device is used. An unloading device for underground excavated soil, which is arranged so as to radially and swivelly protrude from a tail portion and is provided to supply the excavated soil from the self-propelled vehicle to a vertical unloading device. 4. The loading device in the self-propelled vehicle is
The unloading device for underground excavated soil according to claim 3, wherein the device is mounted and installed on a self-propelled cart so as to be freely lifted up. 5. The underground excavated soil unloading device according to claim 3, wherein the lower frame pedestal is vertically movably supported by the upper frame pedestal. 6. The lower frame cradle is a column for supporting the upper frame cradle through a plurality of U bolts on the vertical plate of a bracket formed by integrally connecting a vertical plate and a horizontal plate. 4. A member is detachably fastened to a side surface of the member and is supported on the fastened bracket.
And a device for discharging underground excavated soil according to claim 5.