JPH0791177A - Horizontal hole augering machine equipped with differential epicyclic reduction gear - Google Patents

Abstract

PURPOSE:To enhance the performance of a horizontal hole augering machine used to dig a horizontal hole in underground embedding and crossing work, such as sewerage, water supply and telephone cable. CONSTITUTION:This invention relates a horizontal hole augering machine in which a cylinder-shaped tuyere 16 is laid out in front of a pipe member 14 to be pushed into a horizontal hole by way of a partition wall 15 while a rotary cutter 25 is installed to the front of the tuyere 16, a water-sealed type differential epicyclic reduction gear 55 is installed inside the tuyere 16 in front of the partition wall 15. An output shaft of a motor 56 installed to the rear side of the partition wall 15 is connected to an input shaft 57 of the water-sealed type differential epicyclic reduction gear 55 by way of the partition wall 15 where a rotary shaft output part of the water-sealed differential epicyclic reduction gear 55 is connected to the rotary cutter 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal hole excavator used for digging a horizontal hole in underground burial and various crossover works such as sewerage, water supply, and telephone cable.

[0002]

2. Description of the Related Art A small-diameter horizontal hole excavator for a Hume pipe in which a rock drill does not go into a hole and which has a rotary cutter at the front end of a pipe body is described in Japanese Patent Publication No. 61-56391. .

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal hole excavator having a higher efficiency than the conventional horizontal hole excavator.

[0004]

A means for solving the problems will be described with reference to the drawings. The horizontal hole excavator with a differential planetary speed reducer according to the present invention is provided with a partition wall 15 at the front of the pipe body 14 which is pushed into the horizontal hole 11.
A horizontal hole excavator in which a cylindrical tuyere 16 is disposed through a rotary cutter 25 on the front side of the tuyere 16, and a water-sealed differential planetary speed reducer is provided in the tuyere 16 on the front side of the partition wall 15. 55 is arranged and the output shaft of the motor 56 arranged on the rear side of the partition wall 15 is connected to the input shaft 57 of the water-sealed differential planetary speed reducer 55 through the partition wall 15, The rotation output portion is connected to the rotation cutter 25.

[0005]

[Embodiment] The sealing material 12 is placed in the lateral hole 11 provided in the land 10.
A cylindrical tuyere 16 is arranged in front of the tubular body 14 through which the wall is arranged and pushed, and a rotary cutter 25 is arranged in front of the cylindrical tuyere 16 to form a horizontal hole machine. Has been done.

The water supply passage 41 from the water pump 40 is branched into two, and one of them is connected to the first water supply passage 42 through the first water supply passage 42 to form the first partition wall 15 of the partition wall 15.
The second discharge port 4 on the peripheral wall of the pipe body 14 near the partition wall 15 is made to communicate with the discharge port 43 and the other through the second water supply passage 44.
5, and the 1st water supply path 43 and the 2nd water supply path 44
Flow control valves 46 and 47 are provided in each of them, and a drainage channel 48 communicating with the outside of the lateral hole 11 is provided below the partition wall 15.

When excavating hard rock / hard soil, water is sent only from the second discharge port 45 or from the second discharge port 45 and the first discharge port 43, and the soil and stone scraped off while cooling the corner 8 with water. Is introduced into a drainage channel 48 together with water and taken out by a drainage pump 49.

A water-sealed differential planetary speed reducer 55 is arranged in the tuyere 16 on the front side of the partition wall 15, and the output shaft of a motor 56 arranged on the rear side of the partition wall 15 is passed through the partition wall 15 to form a water-sealed differential gear. It is connected to the input shaft 57 of the moving planetary speed reducer 55, and the rotation output part of the water-sealed differential planetary speed reducer is connected to the rotary cutter 25.

Since the water-sealed differential planetary speed reducer 55 is provided inside the tuyere 16, the whole structure can be made compact. In addition,
In the figure, 57 is an input shaft, 58 is a double type planetary gear, and a plurality of them are radially held by a rotating gear frame 59, and have a first gear 61 and a second gear 62. 60 is a partition wall 15
An inner fixed gear fixed to the second gear 62 meshes with the inner fixed gear. Reference numeral 63 denotes a sun gear fixed to the input shaft 57, which meshes with the first gear. Reference numeral 64 denotes an inner gear that rotates together with the rotary cutter 25. Reference numeral 65 is a bearing interposed between the input shaft 57 and the inner fixed gear 60, and 66 is a bearing interposed between the inner fixed gear 60 and the inner gear 64.

A frusto-conical crusher cone 70 that rotates with the rotary cutter 25 is arranged in the tuyere 16 in a rearward spread, and the frusto-conical crusher cone 70 with respect to the central axis P-P of the cylindrical tuyere 16. The central axis Q-Q is eccentric, and the external gear-shaped uneven portion 7 is provided at the rear end of the crusher cone 70.
1 is provided, and immediately after the external gear-shaped concave-convex portion 71, an internal gear-shaped convex-concave portion 72 and a guide cone 73 composed of a truncated conical portion continuous in front of the internal gear-shaped convex concave portion 72 are arranged and fixed in the cylindrical tuyere 16. There is.

The crusher cone 70 is an inner gear 6
It is fitted and fixed to the outside of 4. The crusher cone 70 rotates together with the rotary cutter 25,
A large rock among the rocks crushed by is crushed as if it is sandwiched by the uneven portion 71 that is eccentrically rotated when passing between the uneven recess 72 and the uneven portion 71.

A cutter unit 1 is constructed by rotatably supporting a substantially conical body 2 on a conical body shaft 9 and projecting a number of corners 8 on the conical surface of the conical body 2 to form a plurality of cutters. The units are arranged in a planetary shape so that the front end of the locus formed when each cutter unit 1 rotates is positioned on the forwardly convex tapered surface S that is substantially orthogonal to the central axis P-P of the cylindrical tuyere. It is composed.

Reference numeral 27 denotes a substrate of the rotary cutter 25, which is fixed to the inner gear 64. Reference numeral 28 denotes an abutment fixed to the substrate 27, and the cone shaft 9 is supported by the abutment 28. Reference numeral 29 is a cylindrical cover of a rotary cutter, and a front surface thereof is provided with a window hole 30 corresponding to the position of each cutter unit 1 so that a tapered surface S is formed on the front side of the cover 29.

When the rotary cutter 25 is rotated while pushing the tubular body 14 with the propulsion jack 17 (with the Hume tube 13 interposed if necessary), the conical body 2 is rotated around the conical body axis 9.
Rotates and scrapes the bedrock by corner 8.

[0015]

According to the present invention, excavation can be performed extremely efficiently.

[Brief description of drawings]

FIG. 1 is a side view of a construction site.

FIG. 2 is a partially omitted side view of the excavator.

FIG. 3 is another partially omitted side view of the excavator.

FIG. 4 is an abbreviated side view of the lower half of a vertically sealed water-sealed differential planetary speed reducer.

FIG. 5 is a side view of a cutter unit.

FIG. 6 is a front view of a rotary cutter.

FIG. 7 is a view taken along line AA of FIG.

FIG. 8 is a front view with the BB cutting machine of FIG. 3 omitted.

[Explanation of symbols]

 1 Cutter Unit 2 Cone 8 Cone 9 Cone Shaft 10 Land 11 Side Hole 12 Sealing Material 13 Fume Tube 14 Tubular Body 15 Partition Wall 16 Cylindrical Tuyere 17 Propulsion Jack 25 Rotating Cutter 27 Substrate 28 Abutment 29 Cover 30 Window Hole 40 Water pump 41 Water channel 42 First water channel 43 First outlet 44 Second water channel 45 Second outlet 46 First flow rate control valve 47 Second flow rate control valve 48 Drainage channel 49 Drainage pump 55 Water-sealed differential planet Speed reducer 56 Motor 57 Input shaft 58 Double type planetary gear 59 Gear frame 60 Inner fixed gear 61 First gear 62 Second gear 63 Sun gear 64 Inner gear 65 Bearing 66 Bearing 70 Crusher cone 71 Concavo-convex portion 72 Convex concave portion 73 Guide cone P- P Central axis of tuyere Q-Q Central axis of crusher cone S-ta Par surface

Claims (1)

[Claims] 1. A cylindrical tuyere (16) is arranged through a partition wall (15) at the front part of a tubular body (14) to be pushed into a lateral hole (11), and the front side of the tuyere (16). A horizontal hole excavator having a rotary cutter (25) arranged in the partition wall (15), in which a water-sealed differential planetary speed reducer (55) is arranged in the tuyere (16) in front of the partition wall (15). ) The output shaft of the motor (56) arranged on the rear side is connected to the input shaft (57) of the water-sealed differential planetary speed reducer (55) through the partition wall (15) to form a water-sealed differential planetary speed reducer. A horizontal hole excavator with a differential planetary speed reducer in which the rotary output part of is connected to a rotary cutter (25).