JP5161937B2 - Injection nozzle multi-purpose machine - Google Patents

Description

  The present invention relates to an excavator capable of providing a plurality of injection nozzles.

  Conventionally, various excavation machines are known (for example, refer to Patent Document 1). The rotary shaft of the excavator is equipped with an ultra-high-pressure main shaft, an ultra-high-pressure swivel, and an ultra-high-pressure triple rotary joint. Nozzle lines are provided.

JP 2007-169888 A

  However, the above-described conventional nozzle line connection method is difficult to cope with when the number of installed ultra-high pressure injection nozzles is large, due to the upper limit of the structure, and when the number of installed ultra-high pressure injection nozzles is small It was possible to cope only with. In addition, in the conventional excavator, it is extremely difficult to control the operation / inactivity of the ultrahigh pressure injection nozzles installed on the excavator faceplate unit, and during the operation of the excavator It was not always possible to adapt all the ultrahigh pressure injection nozzles to the cutting conditions according to the shape and size of the obstacle in a fine and flexible manner.

  The present invention has been made in view of the problems of the prior art as described above, and in particular, a large number of ultra-high pressure injection nozzles required for a large-diameter excavator can be installed. Not only obstacles but also large-scale obstacles that require a large number of ultra-high pressure injection nozzles can be crushed and propelled, and each ultra-high pressure injection nozzle can be operated in units of ultra-high pressure injection nozzles. To provide an injection nozzle multi-purpose excavator that can control the inoperability and increase or decrease the number of ultra-high pressure injection nozzles to be operated according to the size and shape of obstacles, the extent of natural ground, and hardness and hardness. With the goal.

  The present invention includes a shield body having a rotating shaft to which an ultra-high pressure main shaft and an ultra-high pressure composite swivel are connected, and a cutter head having a plurality of ultra-high pressure injection nozzles rotatable with respect to the shield body. The plurality of super-high-pressure spray nozzles each include a super-high-pressure spray nozzle line extending in a structure that is protected in the rotary shaft via the rotary shaft. And the ultra-high pressure injection nozzle line has a plurality of lines, and the rotating shaft is provided with a switching means for controlling the switching of the line of the ultra-high pressure injection nozzle line. An injection nozzle multi-purpose excavator characterized by the above is provided.

  Moreover, it is preferable that the switching means is provided on the rotating shaft between the ultrahigh pressure main shaft and the ultrahigh pressure composite swivel.

  The super high pressure spray nozzle line may include a super high pressure water line and a slurry line, and may further include a hydraulic line that moves the spray nozzle facing the excavator face plate portion within the face plate surface.

  Furthermore, the switching means can perform operation / non-operation control on each of the ultra-high pressure injection nozzles.

  According to the present invention, a shield body having a rotating shaft to which an ultra-high pressure main shaft and an ultra-high pressure composite swivel are connected, and a cutter head having a plurality of ultra-high pressure injection nozzles rotatable with respect to the shield body. The plurality of ultra-high pressure injection nozzles each have an ultra-high pressure injection nozzle line via the rotating shaft, and the ultra-high pressure injection nozzle line is There are multiple lines, such as a slurry line that disperses abrasives when cutting obstacles, an ultra-high pressure line that injects and injects ultra-high-pressure water jets, and a ground improvement material, and a hydraulic line that moves the injection nozzle. Since the rotating shaft is provided with a switching means for controlling the switching of the line of the ultrahigh pressure injection nozzle line, the ultrahigh pressure injection nozzle required for a large-diameter excavator is provided. Can be installed in large numbers, so that not only small-medium-sized obstacles but also large-scale obstacles that require a large number of ultra-high pressure injection nozzles are crushed and propelled In addition, each ultra-high-pressure injection nozzle can be controlled to operate / inactivate in units of ultra-high-pressure injection nozzles, and the number of ultra-high-pressure injection nozzles and line functions that should be operated according to the breadth and hardness of the ground are flexible. Can be increased or decreased.

Fig.1 (a) is a front view which shows the shield main-body part applicable to one Embodiment of the injection nozzle multiple installation type machine concerning this invention, FIG.1 (b) is the injection nozzle concerning this invention. It is a fragmentary sectional side view which shows one Embodiment of a multi-type excavator. FIG. 2 is a schematic diagram showing an ultrahigh pressure injection nozzle line and switching means according to the present invention.

Hereinafter, the best mode for carrying out an injection nozzle multiple type excavator according to the present invention will be described with reference to the drawings. FIG. 1 (a) shows a front view of a shield main body portion of an injection nozzle multiple type excavator according to the present invention, and FIG. 1 (b) shows a portion of the injection nozzle multiple type excavator according to the present invention. A cross-sectional side view is shown. FIG. 2 is a schematic view showing the ultrahigh pressure injection nozzle line and the switching means.

As shown in FIG. 1, the excavator 1 has a shield body 3 having a rotation shaft 2 at the center thereof, a cutter head 4 that can rotate with respect to the shield body 3, a screw conveyor, and the like. It mainly includes a drainage pipe 5 for discharging the crushed obstacle mud water, and a drive motor 6 as a drive source for rotationally driving the rotary shaft 2 and the cutter head unit 4.

As shown in FIG. 1 (b), the cutter head portion 4 provided at the tip in the propulsion direction is provided with a plurality of bits 15 as appropriate, and the cutter head portion 4 has a ground improvement material injection nozzle or obstacle. A plurality of ultrahigh pressure injection nozzles 10 such as an object cutting nozzle are installed, and the illustrated one is provided with 35 ultrahigh pressure injection nozzles 10, of which 12 ultrahigh pressure injection nozzles 10 are hydraulic. The cylinder 11 can be moved back and forth in parallel along the face plate surface, and nine hydraulic cylinders 11 are provided for this purpose.

As shown in FIG. 2, the plurality of ultrahigh pressure injection nozzles 10 have an ultrahigh pressure injection nozzle line connected to a group of hoses running in parallel in the rotary shaft 2. The ultrahigh pressure spray nozzle line has two ultrahigh pressure water lines 12 a and 12 b and a slurry line 13. The ultra high pressure water lines 12a and 12b are lines for supplying ultra high pressure jet water connected to a supply source (not shown) to the injection nozzle side, while the slurry line 13 is an abrasive connected to a supply source (not shown). It can be a line for supplying slurry or ground improvement material to the injection nozzle side.

Further, the ultrahigh pressure injection nozzle line for the ultrahigh pressure injection nozzle 10 that can be moved by the hydraulic cylinder 11 further includes a hydraulic line 14 in addition to the two ultrahigh pressure water lines 12 a and 12 b and the slurry line 13. The hydraulic line 14 is a line for supplying hydraulic fluid to the hydraulic cylinder 11 for moving the injection nozzle that makes the injection position and angle variable.

  The ultra high pressure water line 12a has 24 ports, the ultra high pressure water line 12b has 12 ports, the slurry line 13 has 35 ports, and the hydraulic line 14 has 18 ports. Ports (9 inlet ports and 9 outlet ports).

Connected to the rotary shaft 2 are an ultra-high pressure main shaft 7, an ultra-high pressure composite swivel 8 and an ultra-high pressure multiple rotary joint 8 b that may be, for example, triple. The ultra high pressure composite swivel 8 includes a composite swivel 8a and an ultra high pressure swivel 8b. Further, the switching means 9 is provided on the rotating shaft 2 between the ultrahigh pressure main shaft 7 and the composite swivel 8 a of the ultrahigh pressure composite swivel 8. The super high pressure water lines 12a and 12b, the slurry line 13 and the hydraulic line 14 are composed of the rotary shaft 2, the super high pressure main shaft 7, the super high pressure composite swivel 8 (composite swivel 8a and super high pressure swivel 8b), the switching means 9 and the super high pressure multi It terminates in the ultra-high pressure injection nozzle 10 via the continuous rotary joint 16.

The switching means 9 is for controlling the operation switching of the ultra-high pressure water lines 12a and 12b, the slurry line 13 and the hydraulic line 14 which the ultra-high pressure injection nozzle line has. The line for the injection nozzle 10 is switched. Further, the switching means 9 can perform selective control of operation / non-operation for each ultra-high pressure injection nozzle 10. Therefore, a large number of ultra-high pressure injection nozzles can be installed for large-diameter machines, so that not only small and medium-sized obstacles but also large-scale ones encountered during excavation and require a large number of ultra-high pressure injection nozzles. It can be propelled against smashing obstacles. Further, the operation / non-operation of each ultra-high pressure injection nozzle can be controlled in units of ultra-high pressure injection nozzles, and the number of ultra-high pressure injection nozzles to be operated can be increased or decreased according to the extent of the natural ground.

DESCRIPTION OF SYMBOLS 1 Excavator 2 Rotating shaft 3 Shield body part 4 Cutter head part 5 Drain pipe 6 Driving motor 7 Super high pressure main shaft 8 Super high pressure composite swivel 8a Composite swivel 8b Super high pressure swivel 9 Switching means 10 Ultra high pressure injection nozzle 11 Hydraulic cylinder 12a Super high pressure water line 12b Super high pressure water line 13 Slurry line 14 Hydraulic line 15 Bit 16 Super high pressure multiple rotary joint

Claims (4)

A shield body having a rotating shaft to which an ultra-high pressure main shaft and an ultra-high pressure composite swivel are connected;
A cutter head having a plurality of ultra-high pressure spray nozzles rotatable with respect to the shield body,
Each of the plurality of ultrahigh pressure injection nozzles has an ultrahigh pressure injection nozzle line via the rotating shaft,
The ultra-high pressure injection nozzle line has a plurality of lines,
Switching means for controlling selective switching between operation and non-operation for each of the plurality of lines is provided on the rotating shaft between the ultra-high pressure main shaft and the ultra-high pressure composite swivel. The injection nozzle multi-type excavator. In the injection nozzle multiple installation type machine according to claim 1 ,
The super-high pressure spray nozzle line has a super-high pressure water line and a slurry line, and is a multi-type spray nozzle excavator. In the injection nozzle multiple installation type machine according to claim 2 ,
The ultra-high pressure injection nozzle line further includes a hydraulic line, and the injection nozzle multi-purpose excavator is characterized. In the injection nozzle multiple installation type machine according to any one of claims 1 to 3 ,
The switching means can perform operation / non-operation control on each of the ultra-high pressure injection nozzles according to the size and shape of obstacles encountered during propulsion, the extent of the ground, and the hardness. Multi-purpose excavator.

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