JPH10184035A - Apparatus for breaking construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a construction breaking apparatus undergoing no damage in a water supply pipe for supplying water to a water spray nozzle, and being liable not to have trouble in the water spray nozzle itself. SOLUTION: A conduit 43 for communicating both the ends of a cylinder outer sleeve 4a in the longitudinal direction is arranged within the cylinder outer sleeve 4a, a water supply pipe 44 is connected to the lower end of the conduit 43, and the water supply pipe 44 is allowed to run around the interior of a side plate 6b and connected to the water spray nozzles 46, 46 at the lower end of the side plates 6a, 6b. The conduit 43 within the cylinder outer sleeve 4a is not broken substantially and the water pipe 44 is also protected by the side plate 6a, 6b, as a result, they are not damaged by objectives to be broken through contact. Since, the water spray nozzle 46, 46 are buried in the side plates 6a, 6b, they area also prevented from being damaged in contact with objectives to be broken.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a building crushing device,
In particular, the present invention relates to an improvement in a structure crushing device equipped with a watering nozzle for preventing scattering of dust generated during crushing work.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 4-179773 discloses a structure crushing apparatus in which a water spray nozzle is attached to a crushing type crushing type structure crushing apparatus to crush the structure while spraying water.
And Japanese Utility Model Publication No. 57-21967.

[0003] However, in the device described in Japanese Patent Application Laid-Open No. 4-179773, the water supply pipe is exposed to the outside.
This water pipe could be damaged by interference or collision with the structure. In addition, since the watering nozzle formed of a separate member is mounted to be exposed outside the side plate, a nozzle cover for protecting the watering nozzle is required. However, the nozzle cover itself is still an external member composed of a member different from the side plate. If a strong impact is applied, these members may break from the base and tear off. I can't deny it.

In the case of the apparatus described in Japanese Utility Model Publication No. 57-21967, since the watering nozzle is provided between the two side plates, an accident such as interference with a structure or damage to the watering nozzle due to collision is avoided. It may be difficult to occur,
There are no safety guarantees for water supply pipes for sending water to the watering nozzle.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a structure crushing apparatus which does not cause damage to a water supply pipe for supplying water to a watering nozzle and hardly causes a failure in the watering nozzle itself. It is in.

[0006]

According to the present invention, the hydraulic cylinder is fixed between the side plates so that the axis of the piston rod is perpendicular to the arm opening / closing direction, and both ends of the cylinder outer cylinder are connected in the longitudinal direction. A pipe is provided in the cylinder outer cylinder, a water supply hole is connected to the upper end of the pipe, and a water supply pipe is connected to the lower end, and the water supply pipe is crawled inside the side plate to spray water at the lower end of the side plate. The above object has been attained by a configuration characterized by being connected to the.

[0007] A part of a pipe for supplying water to the watering nozzle is formed inside the cylinder outer cylinder, and the remaining part is crawled inside the side plate and guided to the watering nozzle at the lower end of the side plate. It is composed of a water supply pipe. The pipeline inside the cylinder outer cylinder is protected by the cylinder outer cylinder, and the water supply pipe is protected by the side plate, so that even if the building crushing device is roughly handled, the pipeline for supplying water to the watering nozzle is damaged. Does not occur.

The watering nozzle is embedded in the lower end portion of the side plate, and the watering nozzle is protected by using the side plate as a protector of the watering nozzle. Since the integrally formed side plate functions as a protector for the watering nozzle, the watering nozzle is not easily damaged, and the protector itself is robust because it is also integrally formed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view partially showing the front and side surfaces of a building crushing apparatus 1 according to one embodiment of the present invention, and FIG. 2 is a view partially showing a main part of the building crushing apparatus 1.

As shown in FIGS. 1 (a) and 1 (b), the structure crushing device 1 generally includes a pair of arms 2a, 2b, a link mechanism 3, a hydraulic cylinder 4, a working machine bracket 5, and It is constituted by two side plates 6a and 6b.

Each of the pair of arms 2a and 2b is substantially
As shown in FIG. 1B, a crushing blade 7 is formed at the foremost portion of each of the arms 2a and 2b.
a, 7b are provided side by side in the thickness direction of each arm 2a, 2b. The crushing blade 7b of the arm 2b is provided in three pieces, and the crushing blade 7a of the arm 2a is provided so as to sew between the crushing blades 7b. Is slightly larger than the crushing blades 7b located on both sides thereof. Note that the arms 2a, 2
As shown in FIG. 1 (b), each of b is provided with a lightening portion 8 for reducing the weight in place. 48a and 48b are
This is a shearing blade for cutting a reinforcing bar or the like, and can be appropriately replaced when damage such as blade spillage occurs.

As shown in FIG. 1 (b), the side plates 6a and 6b are substantially rectangular plate-like members integrally formed with the annular flange 9 at a distance from each other, and each of the arms 2a and 2b is Pins 10, 10 mounted through 6a, 6b
Are rotatably supported at the lower ends of the side plates 6a and 6b through the shaft. A pin 1 is provided on the outer side of the arms 2a and 2b.
One ends of the connecting rods 12, 12 are pivotally connected via the first and the first 11,
Further, the other ends of the connecting rods 12 are pivotally connected to both sides of a link piece 14 via pins 13. That is, the link mechanism 3 for driving the arms 2a, 2b to open and close includes the connecting rods 12, 12, the link pieces 14, and the pins 11, 13. The link piece 14 is connected to the piston rod 1 of the hydraulic cylinder 4 through a pin 15 penetrating the center thereof.
6 is fixed to the tip.

As shown in FIG. 2A, the side plates 6a, 6b
At the center of the annular flange 9 provided with
The outer flange 20 of the cylinder outer cylinder 4a is sandwiched between another stepped through hole 18 provided in the other annular flange 19 and the stepped through hole 17 for passing the cylinder outer cylinder 4a. Annular flange 9 and annular flange 1
9 is fixed via bolts 21, and the annular flange 9 having the side plates 6a and 6b is integrated with the cylinder outer cylinder 4a and the annular flange 19.

The working machine bracket 5 is shown in FIGS.
As shown in FIG. 2B and FIG.
Has a structure in which stay members 23, 23 are fixed on both sides of
Each of the stay members 23, 23 is provided with a mounting hole 24, 25 for joining to the end of the boom of the working machine. The annular body 22 is rotatably attached to the cylinder outer cylinder 4a so as to surround the cylinder outer cylinder 4a of the hydraulic cylinder 4, and a nut 26 screwed to the upper end portion of the cylinder outer cylinder 4a, that is, in the vicinity of the cylinder bottom. , 27 in the axial direction. That is, the working machine bracket 5 is
It is rotatable with respect to the annular flange 9 provided with the side plates 6a and 6b and the cylinder outer cylinder 4a integrated therewith, and cannot move in the axial direction.

As shown in FIG. 2A, the hydraulic cylinder 4 includes a piston rod 16 integrally provided with a piston 28, a cylinder outer cylinder 4a, and a cylinder head 29.

As shown in FIG. 2A, the cylinder outer cylinder 4a
A cylindrical projection 30 is provided on the cylinder bottom of
Two annular grooves 31 and 32 are provided on the outer peripheral surface of the projection 30. One annular groove 31 communicates with the piston rod side oil chamber of the hydraulic cylinder 4 via an oil passage 33 penetrating in the longitudinal direction inside the peripheral wall of the cylinder outer cylinder 4a. It communicates with the piston side oil chamber via an oil passage 34 penetrating the bottom.

Rings 35 and 36 are provided on the cylindrical projection 30.
Are rotatably fitted, and O-rings 37, 37 and O
Rotation around the protruding portion 30 can be smoothly performed via the rings 38, 38, and furthermore, movement in the axial direction is prohibited by a snap ring 39 constituting a retaining member.

A pressure oil supply port 40 facing the annular groove 31 is provided on the side surface of the ring 35, and a pressure oil supply port 41 facing the annular groove 32 is provided on the side surface of the ring 36. A hydraulic hose from a hydraulic source of the work machine is connected.
Therefore, even when the side plates 6a and 6b provided with the arms 2a and 2b and the hydraulic cylinder 4 are turned with respect to the work implement bracket 5, the hoses connected to the pressure oil supply ports 40 and 41 are not twisted or the like. That is, the supply of the pressure oil to the annular grooves 31 and 32 is ensured without the rings 35 and 36 rotating with respect to the work implement bracket 5.

When oil is fed from the pressure oil supply port 40 of the ring 35, the oil is supplied to the piston rod side oil chamber of the hydraulic cylinder 4 through the oil passage 33, and the retracted piston rod 1
6 attracts the link piece 14 and the connecting rods 12, 12 pull the outer parts of the arms 2a, 2b to open the arms 2a, 2b, and the oil in the piston side oil chamber is filled with the oil passage 34 and the pressure oil supply port 4.
1 and is returned to the oil tank on the working machine side.

When oil is supplied from the pressure oil supply port 41 of the ring 36, the oil is supplied to the piston side oil chamber of the hydraulic cylinder 4 through the oil passage 34, and the protruding piston rod 1
6 closes the arms 2a and 2b by pushing the outer portions of the arms 2a and 2b via the link piece 14 and the connecting rods 12 and 12, and the oil in the piston rod side oil chamber flows through the oil passage 33 and the pressure oil supply port 40. It is returned to the oil tank on the work machine side.

Further, a water supply hole 42 is formed at the center of the columnar projecting portion 30 so as to penetrate the projecting portion 30 in the axial direction.
Is connected to a conduit 43 penetrating in the longitudinal direction through the inside of the peripheral wall. The conduit 43 opens laterally at the lower end of the cylinder outer cylinder 4a,
A water supply pipe 44 is connected to this opening. Also,
A water supply hose is connected to the opening of the water supply hole 42 from the working machine via a rotary joint.

Oil passage 3 provided in the peripheral wall of cylinder outer cylinder 4a
3 and the conduit 43 are bent at substantially right angles, but after drilling axial and radial drill holes in the peripheral wall of the cylinder outer cylinder 4a, unnecessary openings are formed by taper screws or welding. It is closed by means. The thickness of the peripheral wall of the cylinder outer cylinder 4a is shown by a broken line in FIG.

As shown in FIGS. 1A and 1B, the water supply pipe 44 connected to the lower end portion of the cylinder outer cylinder 4a further crawls on the back surface of the side plate 6b. It is connected to the water supply pipe 45 reaching the vicinity and branching toward the other side plate 6a. And
The water supply pipe 44 and the water supply pipe 45, which are derived from the water supply pipe 45, descend as they crawl on the back surfaces of the side plates 6b, 6a, and finally sprinkle nozzles 46 embedded in the lower ends of the side plates 6b, 6a. , 46.

The side plate 6b is used as an example to spray water.
2 (b) shows the details of the embedded structure of FIG. Of course, side plate 6a
The same applies to the buried structure of the watering nozzle 46 on the side of. As shown in FIG. 2B, the watering nozzle 46 has a cylindrical notch 47 provided at the lower end of the side plate 6b.
And is fixed to the tip of a water supply pipe 44 penetrating the side plate 6b in the thickness direction. Since it is necessary to support the watering nozzle 46, at least the distal end portion of the water supply pipe 44 is formed of a rigid material such as metal or plastic.

As shown in FIG. 2 (b), the watering nozzle 46 in this embodiment applies water supplied from the water supply pipe 44 to the open / close surfaces of the arms 2a, 2b.
(b) spraying outwardly at an angle of approximately 45 ° toward the front end side in a conical shape.
Unlike the structure crushing device disclosed in Japanese Utility Model Publication No. 3 and Japanese Utility Model Publication No. 57-21967, water is not sprayed directly to the abutting portions of the arms 2a and 2b or the object to be crushed. According to the configuration of the present embodiment, the sprayed water and its mist wrap the arms 2a and 2b and the object to be crushed from the outside like a mist curtain. It is prevented from flying far away.

The watering nozzles 46, 46 are connected to the side plates 6a,
Since it is buried inside 6b, it does not directly collide with a structure or the like to be crushed and avoids damage such as crushing or deformation of the tip. The protectors for protecting the watering nozzles 46, 46 are extremely strong because they are constituted by a part of the side plates 6a, 6b themselves. For example, the protectors are the same as the nozzle covers and nozzle holders disclosed in JP-A-4-179773. There is no such thing as jumping out of a slice.

Further, since a part of a pipe for supplying water to the watering nozzles 46, 46 is formed directly inside the cylinder outer cylinder 4a, it is substantially indestructible. The constituent water supply pipes 44, 45 are also piped so as to crawl on the back surfaces of the side plates 4b, 4a, so that they do not come into direct contact with the object to be crushed and are not damaged unnecessarily.

[0028]

According to the structure crushing apparatus of the present invention, water is supplied to the water spray nozzle at the lower end of the side plate through a pipe provided inside the cylinder outer cylinder and a water supply pipe crawl around the inside of the side plate. As a result, even if the building crushing device is roughly handled, the pipeline for supplying water to the watering nozzle will not be damaged.

Further, since the watering nozzle is embedded and attached to the lower end portion of the side plate, the watering nozzle does not directly interfere with the object to be crushed, and the nozzle is prevented from being deformed or crushed. The protector that protects the sprinkler nozzle is integrally formed by the side plate, so it is extremely rugged, and does not catch on the crushing object like the conventionally used external nozzle cover and nozzle holder, The protector itself is not damaged.

[Brief description of the drawings]

FIG. 1 is a diagram showing the front and side surfaces of a building crushing device according to an embodiment of the present invention.

FIG. 2 is a diagram partially showing a main part of the structure crushing device of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Construction crushing apparatus 2a Arm 2b Arm 3 Link mechanism 4 Hydraulic cylinder 4a Cylinder outer cylinder 5 Working bracket 6a Side plate 6b Side plate 7a Crushing blade 7b Crushing blade 8 Lightening 9 Ring flange 10 Pin 11 Pin 12 Connecting rod 13 Pin 14 Link Piece 15 pin 16 piston rod 17 stepped through hole 18 stepped through hole 19 annular flange 20 outer peripheral flange 21 bolt 22 annular body 23 stay member 24 mounting hole 25 mounting hole 26 nut 27 nut 28 piston 29 cylinder head 30 cylindrical protrusion 31 annular groove 32 annular groove 33 oil passage 34 oil passage 35 ring 36 ring 37 O ring 38 O ring 39 snap ring 40 pressurized oil supply port 41 pressurized oil supply port 42 water supply hole 43 conduit 44 water supply pipe 45 water supply pipe 46 watering nozzle 4 7 Notch 48a Shearing blade 48b Shearing blade

Claims (2)

[Claims] 1. A structure crushing apparatus for driving a pair of arms pivotally supported between two side plates by a hydraulic cylinder to pinch and crush a structure, wherein the hydraulic cylinder opens and closes the axis of a piston rod with the arm. A pipe is fixed between the side plates perpendicular to the direction, and has a pipe inside the cylinder that connects both ends of the cylinder in the longitudinal direction, a water supply hole at an upper end of the pipe, and a lower end. , A water supply pipe is connected to the water supply pipe, and the water supply pipe is crawled around the inside of the side plate and connected to a watering nozzle at a lower end of the side plate. 2. The structure crushing device according to claim 1, wherein said watering nozzle is embedded and fixed at a lower end portion of said side plate, and said side plate is used as a protector of said watering nozzle.