JPH11336336A - Sprinkler device for crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rust formation of a swivel joint and intermixture of water in hydraulic oil caused by water leakage of a sprinkler device for a crusher. SOLUTION: In this crusher C with a turning part 6 provided between a main frame 1 and a mounting bracket 5, a swivel joint 7 for connecting the mounting bracket 5 side and a feed oil pipe on the main frame 1 side is provided with a through hole 22 piercing from the mounting bracket 5 side to the main frame 1 side, and a water supply hose 23 for supplying water to a sprinkler nozzle 30 is inserted through the through hole 22. The main frame 1 is provided with a junction block 24. The water supply hose 23 is connected to the junction block 24 through a rotary joint 25, and a water supply hose 26 is connected to the sprinkler nozzle 30 from the junction block 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler for a crusher which is mounted on a construction machine such as a hydraulic power shovel and used in a crusher for crushing concrete, rocks and the like in demolition work and crushing work of a structure. About.

[0002]

2. Description of the Related Art A crusher for crushing a concrete structure or the like includes a pair of crushing arms for clamping and crushing an object to be crushed such as concrete or rock, each of which is rotatably supported by a main frame. A hydraulic cylinder for opening and closing the tip of the cylinder is mounted. A mounting bracket is provided on the main frame of the crusher via a turning part.The mounting bracket is mounted on the boom of the construction machine, and the oil supply pipe is connected from the hydraulic system of the construction machine to a hydraulic cylinder for operating the crushing arm. The hydraulic cylinder is connected to supply hydraulic oil, and the hydraulic cylinder is extended and contracted to rotate the crushing arm to crush and crush the object to be crushed.

When a crushing operation is performed using such a crusher, a large amount of dust is generated. Therefore, in order to suppress the generation of dust during the crushing operation, the crusher is provided with a water spray device.
A water supply pipe from a water supply source provided on the construction machine side must be connected to the watering nozzle of this watering device.

Incidentally, the crusher has a turning portion between the mounting bracket and the main frame, and the main frame turns with respect to the mounting bracket in accordance with the direction of the object to be crushed. In the section, the oil supply pipe and the water supply pipe cannot be fixed pipes. If a hose with a sufficient length is connected so as not to hinder the turning, the hose is swung during the turning and hinders the work, and the hose easily hits an obstacle and is easily damaged.

Therefore, conventionally, a swivel joint has been provided between the mounting bracket and the main frame.
As shown in FIG. 5, the swivel joint 50 has a cylindrical shaft 51 and an annular body 52 rotatably mounted on the outer periphery thereof. The body 52 is mounted on the main frame side, and the shaft 51 is mounted on the mounting bracket side. Each is fixed.

[0006] The shaft 51 is provided with a pair of oil supply pipe connection ports 53 and 54 at the upper end, and a pair of upper and lower annular oil grooves 55 and 56 are formed on the outer periphery. In the figure, between the oil supply pipe connection port 53 on the right side and the upper annular oil groove 55, and between the oil supply pipe connection port 54 on the left side and the lower annular oil groove 56,
Oil supply holes 57 and 58 are respectively formed.

The body 52 is provided with a pair of upper and lower oil supply pipe connection ports 59 and 60 on the outer periphery, and communicates the upper and lower oil supply pipe connection ports 59 and 60 with the upper and lower annular oil grooves 55 and 56, respectively. Oil supply holes 61 and 62 are formed.
The oil supply pipes 53 and 54 on the side of the shaft 51 are connected to oil supply pipes from the hydraulic system of the construction machine, and the oil supply pipes 59 and 60 on the body side are supplied with oil to a hydraulic cylinder for operating the crushing arm. The tube is connected.

Further, water supply pipe connection ports 63 and 64 are provided at the upper end and the lower end of the shaft 51, respectively, and a water supply hole 65 is formed between the upper and lower water supply pipe connection ports. A water supply pipe 66 from a water supply source on the construction machine side is connected to the water supply pipe connection port 63 at the upper end, and a water supply pipe 67 to the water spray nozzle is connected to the water supply pipe connection port 64 at the lower end.

By providing the swivel joint 50 in this manner, the hose is not swung when the main frame pivots with respect to the mounting bracket during the crushing operation, and does not hinder the operation.

[0010]

However, in this swivel joint 50, a water supply hole 65 is formed in the shaft 51, and water supply pipes 66, 67 are provided in upper and lower water supply pipe connection ports 63, 64.
Are connected to each other, causing water leakage to cause rust in the swivel joint 50, or the oil supply hole 57,
There is a possibility that water may be mixed into the hydraulic oil in 58 to deteriorate the oil.

The present invention solves such a problem in a water sprinkler for a crusher. The crusher is capable of preventing generation of rust in a swivel joint due to water leakage and mixing of water into hydraulic oil. The purpose of the present invention is to provide a sprinkling device for use.

[0012]

SUMMARY OF THE INVENTION A water sprinkling device for a crusher according to the present invention is a crusher having a turning portion between a main frame and a mounting bracket. In order to solve the above-mentioned problem, a swivel joint for connection is provided with a through hole penetrating from the mounting bracket side to the main frame side, and a water supply pipe for supplying water to the watering nozzle is inserted through the through hole.

With this configuration, since the water supply pipe is not directly connected to the swivel joint, it is possible to prevent rust of the swivel joint due to water leakage and prevent water from being mixed into the hydraulic oil.

If a rotary joint is provided on the water supply pipe inserted into the through hole of the swivel joint, the water supply pipe can be prevented from being twisted when the main frame turns with respect to the mounting bracket during the crushing operation.

When a relay block for a water supply pipe is provided on the main frame, and the water supply pipe inserted into the through hole of the swivel joint is connected to the relay block via a rotary joint, the water supply pipe from the relay block to the water spray nozzle is connected to a fixed pipe. can do.

If the relay block is a branch chamber that allows piping to a plurality of watering nozzles, piping for providing a plurality of nozzles is facilitated.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a crusher provided with a sprinkler according to an embodiment of the present invention, FIG. 2 is a side view of the crusher, FIG. 3 is a plan view of the crusher, FIG. FIG. 3 is an enlarged vertical sectional view of a swivel joint.

The crusher C comprises a pair of left and right crushing arms 2L for crushing the crushed object on the main frame 1.
An intermediate portion of the 2R is rotatably supported by arm pins 3L and 3R. Upper end of crushing arm 2L and crushing arm 2R
The hydraulic cylinder 4 has a cylinder pin 41L at the upper end thereof.
Mounted at 41R. In addition, the main frame 1 is provided with a watering nozzle 30 for suppressing generation of dust during crushing work.

At the upper end of the main frame 1, a mounting bracket 5 for mounting the crusher C on a boom of a construction machine is provided via a turning part 6. A swivel joint 7 is provided between the mounting bracket 5 and the main frame 1.

As shown in FIG. 4, this swivel joint 7 has a cylindrical shaft 8 and an annular body 9 rotatably mounted on the outer periphery of the shaft. Each is fixed to the mounting bracket 5 side.

The shaft 8 is provided with a pair of oil supply pipe connection ports 10 and 11 at the upper end, and a pair of upper and lower annular oil grooves 12 and 13 are formed on the outer periphery. 4, between the upper right oil supply pipe connection port 10 and the upper annular oil groove 12, and between the left oil supply pipe connection port 11 and the lower annular oil groove 13.
Oil supply holes 14 and 15 are respectively formed.

The body 9 is provided with a pair of upper and lower oil supply pipe connection ports 16 and 17 on the outer circumference, and communicates the upper and lower oil supply pipe connection ports 16 and 17 with the upper and lower annular oil grooves 12 and 13, respectively. Oil supply holes 18 and 19 are formed.

Oil supply pipes (not shown) from the hydraulic system of the construction machine are connected to the oil supply pipe connection ports 10 and 11 on the shaft 8 side, and the crushing arm 2L is connected to the oil supply pipe connection ports 16 and 17 on the body 9 side. Oil supply pipes 20 and 21 to the hydraulic cylinder 4 for 2R operation are connected.

Further, a through hole 2 penetrating from the mounting bracket 5 side to the main frame 1 side is formed at the center of the shaft 8.
The water supply hose 2 is provided in the through hole 22 as a water supply pipe for supplying water to the watering nozzle 30.
3 is inserted.

The water supply hose 23 has one end connected to a water supply source (not shown) on the construction machine side and the other end connected to a relay block 2 of a water supply pipe fixed inside the main frame 1.
4 is connected via a known rotary joint 25. Further, from the relay block 24, the watering nozzle 3
0 is connected to a water supply hose 26.

When a plurality of watering nozzles 30 are used in the crusher C, the relay block 24 is a branch chamber that enables piping to each watering nozzle 30. When performing crushing work, pressure oil is supplied to the hydraulic cylinder 4 from the hydraulic system of the construction machine, and the crushing object is pinched and crushed by rotating the crushing arms 2L and 2R by expanding and contracting the hydraulic cylinder 4. I do.

At this time, water is supplied from the water supply source on the construction machine side to the water spray nozzle 30 through the water supply hose 23, the relay block 24, and the water supply hose 26, and water is sprayed to suppress generation of dust.

As described above, in this watering device, the water supply pipe is not directly connected to the swivel joint 7 and the water supply hose 2 is not connected.
Since 3 is inserted through the through-hole 22, rust of the swivel joint 7 due to water leakage and mixing of water into the hydraulic oil can be prevented.

Since the relay block 24 is provided on the main frame 1 and the water supply hose 23 is connected to the relay block 24 via the rotary joint 25, when the main frame 1 turns with respect to the mounting bracket 5 during crushing work. In addition, the water supply hose 23 can be prevented from being twisted, and the water supply pipe from the relay block 24 to the water spray nozzle 30 can be a fixed pipe.

The relay block 24 is connected to a plurality of watering nozzles 30
If a branch chamber is provided that allows piping to the water, the piping is easy even when a plurality of watering nozzles 30 are provided.

[0031]

As described above, in the sprinkler for a crusher according to the present invention, since the water supply pipe is not directly connected to the swivel joint, rust of the swivel joint is generated due to water leakage, and water is not supplied to the hydraulic oil. Mixing can be prevented.

When a rotary joint is provided on the water supply pipe inserted into the through hole of the swivel joint, it is possible to prevent the water supply pipe from being twisted when the main frame turns with respect to the mounting bracket during the crushing operation.

When a relay block for a water supply pipe is provided on the main frame, and the water supply pipe inserted through the through hole of the swivel joint is connected to the relay block via a rotary joint, the water supply pipe from the relay block to the water spray nozzle is connected to a fixed pipe. can do.

If the relay block is a branch chamber that allows piping to a plurality of watering nozzles, piping for providing a plurality of nozzles becomes easy.

[Brief description of the drawings]

FIG. 1 is a front view of a crusher provided with a sprinkler according to an embodiment of the present invention.

FIG. 2 is a side view of the crusher.

FIG. 3 is a plan view of the crusher.

FIG. 4 is an enlarged vertical sectional view of the swivel joint.

FIG. 5 is a longitudinal sectional view of a conventional swivel joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main frame 2L, 2R Crushing arm 4 Hydraulic cylinder 5 Mounting bracket 6 Revolving part 7 Swivel joint 8 Shaft 9 Body 10 Oil supply pipe connection port 11 Oil supply pipe connection port 12 Annular oil groove 13 Annular oil groove 14 Oil supply hole 15 Oil supply hole 16 Oil supply Pipe connection port 17 Oil supply pipe connection port 18 Oil supply hole 19 Oil supply hole 20 Oil supply pipe 21 Oil supply pipe 23 Water supply hose 24 Relay block 25 Rotary joint 26 Water supply hose 30 Watering nozzle C Crusher

Claims (4)

[Claims] 1. A crusher having a revolving portion between a main frame and a mounting bracket, wherein a swivel joint for connecting an oil supply pipe on the mounting bracket side and the main frame side is connected to the main frame side from the mounting bracket side. A water sprinkling device for a crusher, wherein a water supply pipe for supplying water to a water sprinkling nozzle is inserted into the through hole. 2. A sprinkler for a crusher according to claim 1, wherein a rotary joint is provided in a water supply pipe inserted into a through hole of the swivel joint. 3. The crusher according to claim 2, wherein a relay block for a water supply pipe is provided on the main frame, and the water supply pipe inserted into the through hole of the swivel joint is connected to the relay block via a rotary joint. Sprinkling equipment. 4. The water sprinkling device for a crusher according to claim 3, wherein the relay block is a branch chamber that enables piping to a plurality of water sprinkling nozzles.