JPH0718151B2 - Reinforcement formation formation device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for forming a reinforced stratum composed of a mixture of soil particles and long fibers by spraying.

[Prior Art] Conventionally, as a method for forming a reinforced formation, Japanese Patent Laid-Open No. 55-16717
As disclosed in Japanese Patent Publication No. 0, the excavator is mounted on the front part of the traveling frame, the soil particle transfer belt conveyor extending in the front-rear direction is mounted on the upper part of the traveling frame, and the excavator is mounted on the rear part of the traveling frame. A hopper is arranged, a hydraulic long fiber jet nozzle is provided above the hopper, the upper layer of sandy ground is excavated by the excavator, and the excavated soil particles are supplied into the hopper by a belt conveyor, and A method is known in which fibers are supplied into the hopper by a hydraulic long-fiber jet nozzle, mixed with soil particles, and a reinforced formation consisting of a mixture of soil particles and long fibers is laid on the ground after excavation. .

[Problems to be solved by the invention]

In the case of the conventional reinforcement formation method, the formation of the reinforcement formation is limited to the rear part of the traveling frame supporting the excavator and the belt conveyor, and the formation of the reinforcement formation for the ground and the ground other than the sand that does not require excavation. It cannot be adopted for creation. Furthermore, the angle of the belt conveyor cannot be freely adjusted, and it is not possible to easily respond to changes in the topography to be constructed. Moreover, since the hydraulic fiber injection nozzle only moves while maintaining a constant posture, it is not possible to mix long fibers uniformly in the width direction of the sand layer, and a larger and heavier sand excavation and supply device is required. There is a problem of doing.

[Object and Structure of Invention]

An object of the present invention is to provide a reinforced formation forming apparatus that can advantageously solve the above-mentioned problems, and the gist of the present invention is to provide a turning structure attached to a frame 2 of a self-propelled vehicle 1. A base end of a refraction boom 4 is attached to the base 3 so as to be raised and lowered, and a support arm 6 pivoted by an arm pivot drive device 5 is attached to a tip end of the refraction boom 4, and the support arm 6 is attached to the support arm 6. The soil particle jetting nozzle 8 swung by the nozzle swiveling drive device 7 and the long fiber 10 which is repeatedly swung by the swinging drive device 9 to the soil particle spraying part.
And a fiber injection nozzle (11) for injecting zigzag in a zigzag shape are provided.

〔Example〕

 The present invention will now be described in detail with reference to the illustrated example.

1 to 11 show an embodiment of the present invention, in which a frame 2 of a self-propelled vehicle 1 having an endless track 12 and a drive unit for traveling is turned by a drive unit for turning. The swivel base 3 is attached to the swivel base 3
13 is fixed, the base end portion of the first boom component member 14 is pivotally attached to the swivel base 3 by the horizontal shaft 15, and the intermediate portion of the first boom component member 14 and the swivel base 3 are for boom elevation. The first boom constituent member is connected via a hydraulic cylinder 16.
The base end side portion of the second boom component member 17 is attached to the abscissa at the tip of 14
While being pivotally attached by 18, the base end portion of the second boom component member 17 and the first boom component member 14 are connected via a boom bending / extending hydraulic cylinder 19, and the second boom component member 17 is further connected.
The base end portion of the third boom component member 20 is pivotally attached to the tip end of the second boom component member 20 by the horizontal shaft 21, and the one end portion of the link 22 is pivotally attached to the tip end side portion of the second boom component member 17 and the third boom component member. 20
One end of the link 23 is pivotally attached to the middle part of the
The other end of 3 and the intermediate portion of the second boom component member 17 are connected via a boom bending / extending hydraulic cylinder 24, and the first boom component member 14, the second boom component member 17, and the third boom component member are connected. 20 and hydraulic cylinders 19 and 24 for boom bending and extension 2 and link 2
The refraction boom 4 is composed of the members 2 and 23.

A vertical axis 25 fixed to the base end of the support arm 6 is rotatably fitted to the tip end of the third boom component 20 of the bending boom 4, and the tip end of the third boom component 20. The rotation shaft of the arm swiveling drive device 5 composed of a hydraulic motor fixed to the above is connected to the vertical axis 25, a downward opening box-shaped case 27 is fixed to the lower end of the tip of the support arm 6, and a flexible hose is formed. The pipe 26 is the tip of the support arm 6 and the case.
The flange fixed to the upper end of the flexible tube 26 is fixed to the upper part of the support arm 6, and
An upper end of the soil particle injection nozzle 8 made of a metal tube is detachably connected to a lower end of 26 by a joint 28.

The soil particle jetting nozzle 8 is inserted into the through hole 30 of the swirling member 29, and is a nozzle swiveling drive device 7 including a hydraulic motor.
Is fixed to the lower part of the support arm 6 on one side of the flexible tube 26, the upper end of a crank type drive shaft 31 is fixed to the rotary shaft of the nozzle turning drive device 7, and the crank type drive shaft 31 The upper end of the crank type driven shaft 32 having the same eccentricity as the above is rotatably fitted to the support arm 6 on the other side of the flexible tube 26, and the crank type driven shaft 31 and the crank type driven shaft 32 are A lower end portion is rotatably fitted to the swivel member 29, and a swivel member slip-off preventing support member 33 is detachably attached to lower end portions of the crank type drive shaft 31 and the crank type driven shaft 32. When the nozzle turning drive device 7 is operated, the turning member 29 is turned, and the turning member 29 turns the soil particle injection nozzle 8 in a conical shape.

A support shaft having an intermediate portion of the support member 35 extending in the longitudinal direction of the support arm on a support fitting 34 fixed to the side portion of the support arm 6.
A nozzle support member that is pivotally mounted by 36, and that the support fitting 34 and the base end portion of the support member 35 are connected by a tilt adjusting hydraulic cylinder 37 and that extends in a direction perpendicular to the longitudinal direction of the support arm.
An arm 39 is fixed to one end of 38, and a base end of the arm 39 is pivotally attached to the support member 35 by a pivot 40 extending in the longitudinal direction of the nozzle support member. The adjusting through holes 41 are provided at intervals in the longitudinal direction of the arm.

The swinging drive device 9 composed of a hydraulic motor is provided on the support member 35.
Is fixed to the rotary shaft 42 of the swinging drive device 9, one end of the rod 43 is pivotally attached to the eccentric position of the rotary body 42 by a pin 44, and the other end of the rod 43 and the arm 39 are fixed. A detachable pivot fitting 45 made of a pin or a bolt is fitted over any one of the swing angle adjusting through holes 41, and when the swing drive device 9 is operated, the nozzle support member 38 is centered on the pivot 40. Is repeatedly rocked by an angle θ.

The water injection annular chamber 47 is provided on the outer periphery of the tip end side of the fiber insertion tube 46 to form the hydraulic fiber injection nozzle 11, and the plurality of fiber injection nozzles 11 are spaced in the longitudinal direction of the nozzle support member 38. The high pressure water supply pipe 48 is provided with a branch pipe 49.
An annular chamber 47 for water injection in each fiber injection nozzle 11 via
The other end of the high-pressure water supply pipe 48 is connected to
Connected to 50.

A lid 53 is attached to a case main body 52 to which a plurality of bobbin supporting rods 51 are fixed, and locking metal fittings (not shown) are attached to the case main body 52 and the lid 53 to form a bobbin accommodating case 54, The case main body 52 is fixed to the rear part of the swivel base 3, and bobbins 55 around which the long fibers 10 made of polyester multifilaments are wound are fitted on the bobbin supporting rods 51.

A lid 60 is attached to a case body 59 having an end guide plate 57 having a plurality of fiber guide holes 56 and an intermediate guide plate 58 having a plurality of fiber guide holes 56, and the case body thereof.
A metal fitting (not shown) is attached to the 59 and the lid 60 to form a fiber guide case 61, and a ceramic guide layer (not shown) is formed on the peripheral surface of the fiber guide hole 56 for the purpose of preventing cutting of the fiber. Is integrally provided, and the case body 59 of the fiber guide case 61 is provided on the side portions of the first boom component member 14 and the second boom component member 17 and on the upper portion of the case body 52 of the bobbin housing case 54. A fiber guide member 62 that is fixed and extends parallel to the nozzle support member 38 is fixed to the support member 35, and a plurality of fiber guide holes 63 are provided in the fiber guide member 62 at substantially equal intervals with the fiber injection nozzle 11. A ceramic guide layer (not shown) is also integrally provided on the peripheral surface of the fiber guide hole 63 for the purpose of preventing the fiber from being cut.

The long fibers 10 paid out from each bobbin 55 in the bobbin housing case 54 has an end guide plate 57 in each fiber guide case 61, a fiber guide hole 56 in an intermediate guide plate 58, and a fiber guide hole 63 in a fiber guide member 62. It is inserted through the fiber insertion pipe 46 in the fiber injection nozzle 11 through the, the compressor 65 is connected to the air inlet of the wind-type soil particle pressure-feeding device 64 having a soil particle storage portion, and in the wind-power-type soil particle pressure-feeding device 64. One end of a soil particle supply hose 66 is connected to the soil particle pressure feed port, the other end of the hose 66 is connected to the flexible tube 26, the high pressure pump 50, the wind type soil particle pressure feed device 64, and the compressor 65. And are mounted on the swivel base 3. Also the cab
An operation panel for running the self-propelled vehicle 1, turning the swivel base 3, driving each drive device, expanding and contracting each hydraulic cylinder, and driving the high-pressure pump 50 and the compressor 65 is provided in the inside 13. .

Wind-powered soil particle pump 64 connected to the compressor 65
The same structure as a conventionally known concrete spraying machine or mortar spraying machine is used.

When the nozzle turning drive device 7 and the compressor 65 are driven and the self-propelled vehicle 1 is driven in the reinforced stratum formation device of the above-described embodiment, soil particles are jetted downward from the soil particle jet nozzle 8, and Since the soil particle jet nozzle 8 is swirled in a conical shape, the soil particles are sprayed so as to move laterally while drawing a circle. When the swing drive device 9 and the high-pressure pump 50 are operated, the long fibers 10 are sucked by the water flow injected from the water injection annular chamber 47 of the fiber injection nozzle 11 and zigzag toward the soil particle spraying portion. It is sprayed on to form a reinforced stratum composed of a mixture of soil particles and long fibers.

The rocking number S of the fiber jet nozzle 11 per unit time is determined by the nozzle rocking angle θ, the construction width D, the height H of the fiber jet nozzle 11 from the spray surface, and the long fiber jet velocity V ₁ shown in FIG. The relationship of the following formula is established when the long fiber ground contact velocity with respect to the sprayed surface is determined as V ₂ .

By making the long fiber jetting speed V ₁ and the long fiber grounding velocity V ₂ substantially equal to each other, the long fibers 10 can be jetted without being relaxed.

Therefore, when V ₁ = V ₂ , the oscillation frequency S of the fiber injection nozzle 11 is expressed by the following equation.

As shown in FIG. 12, when the reinforcing ground layer 68 is formed along the slope 67, the fiber jet nozzle 11 is swung in a direction substantially perpendicular to the slope 67, and the soil particle jet nozzle 8 is moved. And it is preferable to spray each fiber jet nozzle 11 in a zigzag shape along the longitudinal direction of the slope.

In the case of the above-mentioned embodiment, the angle of the nozzle support member 38 with respect to the turning center line of the soil particle jetting nozzle 8 can be adjusted by adjusting the length of the tilt adjusting hydraulic cylinder 37. Even if the height of the fiber injection nozzle 11 changes, the long fibers 10 can be sprayed on the soil particle spraying portion. Moreover, since the long fibers 10 fed from the bobbin 55 in the bobbin housing case 54 are guided to the fiber jet nozzle 11 through the inside of the fiber guide case 61, the influence of wind and rain can be reduced.

Since the bobbin housing case 54 is provided at the rear part of the swivel base 3, the long fiber 10 can be easily replaced. When replacing the long fiber 10, the long fiber 10 is cut in the case main body 52, the bobbin 55 is removed, and the end of the long fiber of the new bobbin fitted on the bobbin supporting rod 51 is left in the case main body 52. It is connected to the rear end of the continuous filament 10.

When carrying out the present invention, the arm turning drive device 5,
As the nozzle turning drive device 7 and the swing drive device 9, an air motor or an electric motor with a speed reducer may be used instead of the hydraulic motor. Further, the digging bucket in the conventionally known bucket type digging machine may be removed, and the digging machine may be modified to manufacture the reinforced formation forming apparatus of the present invention.

In the case of the above embodiment, the four long fibers 10 are jetted toward the soil particle spraying portion, but the number of the long fibers 10 jetted may be increased or decreased.

〔The invention's effect〕

According to the present invention, the base end of the refraction boom 4 is attached to the swivel base 3 attached to the frame 2 of the self-propelled vehicle 1 so as to be raised and lowered, and the tip end of the refraction boom 4 is used for arm rotation. A support arm 6 swung by a drive unit 5 is attached to the support arm 6, and a soil particle injection nozzle 8 swung by a nozzle swiveling drive unit 7 and a soil particle sprayed by a swinging drive unit 9 repeatedly. Since the spraying part is provided with the fiber spray nozzle 11 that sprays the long fibers 10 in a zigzag shape, the soil particles are sprayed over a predetermined width by moving the soil particle spray nozzle 8 in the lateral direction while swirling. By moving the fiber jet nozzle 11 repeatedly, the long fibers 10 are jetted in a zigzag shape toward the soil particle spraying portion, and the long fibers 10 are uniformly sprayed on the sprayed soil particles. Mix, A uniform high-strength reinforcement layer 68 can be formed, and the bending boom 4 is swung or bent upwards and downwards so that the soil particle injection nozzle 8 and the fiber injection nozzle 11 can be installed around the self-propelled vehicle 1. Since it can be arranged at any position from the traveling surface of the self-propelled vehicle 1, the self-propelled vehicle 1 can be placed at a side of the self-propelled vehicle 1 while traveling. Since the reinforcement layer 68 can be continuously formed, the reinforcement layer 68 can be formed at an arbitrary level, and the support arm 6 can be swung by the arm swiveling drive device 5, Even if the movable boom 4 is placed at an arbitrary turning position, the self-propelled vehicle 1 can be provided with a row of the fiber injection nozzles 11.
The long fibers 10 can be sprayed over substantially the entire width of the soil particle spraying portion by arranging them substantially parallel to the moving direction of the soil particles, and the soil particle spraying nozzle 8 and the plurality of fiber spraying nozzles 11 can be commonly supported. The arm 6 can support and move simultaneously while maintaining a certain relational position, and further, the soil particle jetting section and the long fiber jetting section supported by the supporting arm 6 can be manufactured in a small size and a light weight. can get.

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, and FIG. 1 is a partial longitudinal side view of a reinforced formation forming apparatus,
FIG. 2 is a perspective view thereof, FIG. 3 is a partially cutaway side view showing a soil particle spraying section and a fiber spraying section provided on a support arm at the tip of the bending boom, and FIG. 4 is a plan view thereof. FIG. 5 is a perspective view thereof, FIG. 6 is a partial vertical front view showing a swivel driving unit of the soil particle jet nozzle, FIG. 7 is a partial vertical side view of the nozzle inclination adjusting device, and FIG. 8 is a nozzle supporting member. FIG. 9 is a plan view showing the attached fiber jet nozzle, FIG. 9 is a plan view thereof, FIG. 10 is a partially cutaway perspective view showing the fiber guide case in an open state, and FIG. 11 is a view showing the main body of the fiber guide case. It is a partial cutaway side view. FIG. 12 is a vertical cross-sectional view showing a state in which a reinforced stratum is being formed along the slope, and FIG. 13 is a view showing the relationship between the speed of long fibers and the swing angle of the fiber injection nozzle. In the figure, 1 is a self-propelled vehicle, 2 is a frame, 3 is a swivel base, 4 is a bending boom, 5 is a drive device for swinging an arm, 6
Is a support arm, 7 is a nozzle swivel drive device, 8 is a soil particle injection nozzle, 9 is a swing drive device, 10 is a long fiber, 11 is a fiber injection nozzle, 13 is a cab, 14 is a first boom component member,
Reference numeral 16 is a boom / elevation hydraulic cylinder, 17 is a second boom constituent member, 19 is a boom bending / extending hydraulic cylinder, 20 is a third boom constituent member, 24 is a boom bending / extending hydraulic cylinder, 25 is a vertical axis, 26 is possible. Flexible tube, 29 is a swivel member, 31 is a crank type drive shaft, 32 is a crank type driven shaft, 35 is a support member, 36 is a support shaft, 37 is a tilt adjusting hydraulic cylinder, 38 is a nozzle support member, and 39 is an arm. ,
40 is a pivot, 41 is a through hole for adjusting the swing angle, 42 is a rotating body, 43 is a rod, 45 is a pivotal fitting, 46 is a fiber insertion pipe, 47 is a water injection annular chamber, 48 is a high pressure water supply pipe, 49 is a branch pipe, 50 is a high pressure pump,
54 is a bobbin housing case, 56 is a fiber guide hole, 57 is an end guide plate, 58 is an intermediate guide plate, 61 is a fiber guide case, and 62 is a fiber guide case.
Is a fiber guide member, 64 is a wind type soil particle pumping device, 65 is a compressor, 66 is a soil particle supply hose, and 68 is a reinforced formation.

Front Page Continuation (72) Inventor Naruo Kitahara 6-3 Higashigokencho, Shinjuku-ku, Tokyo Kumagai Gumi Togo Dormitory (56) Reference JP-A-51-92515 (JP, A) JP-A-55 -167170 (JP, A)

Claims (1)

[Claims] 1. A base 2 of a bending boom 4 is mounted on a swivel base 3 mounted on a frame 2 of a self-propelled vehicle 1 so as to be raised and lowered, and an arm turning drive is mounted on the tip of the bending boom 4. A support arm 6 pivoted by the device 5 is attached,
A soil particle jetting nozzle 8 swung by a nozzle swiveling drive device 7 on the support arm 6, and a fiber jet for repeatedly swung by a swinging drive device 9 to jet long fibers 10 in a zigzag shape to a soil particle blowing portion. A nozzle (11) is provided, and a reinforced geological formation device.