JPH086152Y2 - Oil supply device for wedge-shaped rock crusher - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention inserts wedges into two guides and expands both guides to crush the bedrock into which the guides are inserted. The present invention relates to an oil supply device for supplying oil to a sliding surface of a wedge and a guide in a wedge-shaped rock crusher.

[Conventional technology]

A wedge-shaped rock crusher disclosed in Japanese Utility Model Publication No. 59-31693 is known.

That is, as shown in FIG. 9, the wedge a is between the guides b and b divided into two, and the guide b and b are inserted by inserting the wedge a in the cylinder c along the guides b and b. Is expanded to the left and right, and the rock mass d into which the guides b and b are inserted is crushed.

In such a wedge-shaped rock crusher, a large force acts on the sliding surface, which requires lubrication.

For example, as shown in Fig. 10, an oil groove is formed on the sliding surface of the wedge a.
ee is provided, and oil is supplied by a hose gg from the oil supply passage ff provided in the guides b, b toward the oil groove ee, or as shown in FIG. 11, a groove h is formed on a side surface other than the sliding surface of the wedge a. The oil supply pipe i formed in the groove h is opened at the tip of the sliding surface through the oil hole j so that the oil is supplied from the oil supply pipe i to the tip of the sliding surface.

[Problems to be solved by the device]

In the former oil supply device, the oil flows under its own weight along the oil groove e to the tip of the wedge a. Therefore, it is good to crush the wedge a downward, but crush it with the wedge a sideways or upward. In this case, the oil does not flow to the tip of the wedge a and good lubrication cannot be performed.

The latter oil supply device supplies oil to the tip of the wedge a, so it is good for crushing work with the wedge a facing sideways and upward, but when crushing work with the wedge a facing downward, the oil is Not only does it not flow to the base end for good lubrication, but also the oil hole j must be bored at the tip of the wedge a, which makes the work troublesome.

Therefore, an object of the present invention is to provide an oil supply device for a wedge-type rock crusher capable of solving the above problems.

[Means and Actions for Solving the Problems]

A discharge port is formed at the tip of the pipe embedded in the concave groove of the wedge sliding surface, a supply port is formed at the base end, and a supply port opened at the wedge sliding surface is formed at the base end of the guide. A switching valve for supplying pressure oil to one of the inlet and the supply port is provided,
By switching the switching valve, the pressure oil can be selectively supplied to the tip end portion and the base end portion of the wedge sliding surface.

〔Example〕

As shown in FIG. 8, a boom 3 is vertically swingably mounted on an upper vehicle body 2 which is swingably mounted on a lower traveling body 1, and an arm 4 is vertically swingably mounted on the boom 3. A guide cell 6 is rotatably provided on a bracket 5 supported on the tip of an arm 4 so as to be vertically swingable, and a perforator 7 and a wedge-shaped rock crusher 8 are provided on the guide cell 6 so as to be vertically movable.

The wedge-shaped rock crusher 8 is provided with a cylinder 10 on a support base 9 that moves up and down along the guide cell 6.
Reference numeral 10 denotes an extension chamber 14 and a reduction chamber 15 in which a piston 13 provided with a piston rod 12 is slidably fitted in a cylindrical cylinder body 11.
The cylinder body 11 has a substrate on the front end face.
16 is installed.

The base ends of a pair of guides 18, 18 are connected to the base plate 16 via a connecting part 17, and the base ends of wedges 19 inserted between the pair of guides 18, 18 are connected to the piston rod 12. There is.

On the sliding surfaces 19a, 19a of the wedge 19 with the pair of guides 18, 18, concave grooves 20 are formed in the longitudinal direction from the base end to the tip as shown in FIGS. A pipe 21 is provided in each groove 20, and the groove 20 is closed by a metal 22 that is obtained by injecting molten metal into the recess between the outer surface of the pipe 21 and the opening of the groove 20 and solidifying the molten metal. are doing. For example, the groove 20 is closed by soldering.

A discharge port 23 is provided at the tip of the sliding surface 19a of the wedge 19 by opening the pipe 21, and a supply port 24 is provided at the base end of the wedge 19 by opening the pipe 21. Connect one end of hose 26 via elbow 25 to
The other end of 26 is connected to an elbow 27 provided on the connecting member 17.

A supply port 28 is formed at each of the base end portions of the pair of guides 18, 18 so as to face the sliding surface 19a of the wedge 19, and a hose 29 is connected to each of the supply ports 28. The hose 29 and the respective hoses 26 are connected to a discharge side of a hydraulic pump 31 described later provided on the upper vehicle body 2 via a switching valve 30 described later provided on the support base 9.

The switching valve 30 has a drain position N and a first position as shown in FIG.
・ It becomes a solenoid operated directional control valve with the second position I and II, and the switch 32
And the first solenoid 30a is energized, the first position I
And supply the discharge pressure oil of the hydraulic pump 31 to the hose 26,
When the second solenoid 30b is energized, the second position II is reached and the pressure oil discharged from the hydraulic pump 31 is supplied to the hose 29.

Therefore, if the switch 32 is switched to set the switching valve 30 to the first position I, the hose 26, the supply port 24, the pipe 21, the discharge port 23.
Since pressure oil can be supplied to the tip of wedge 19,
Even when crushing work with 19 facing up and sideways, wedges
Oil can be reliably supplied over the sliding surface 19a of the sliding surface 19a in the longitudinal direction for good lubrication. If the switch 32 is switched and the switching valve 30 is set to the second position II, the hose 29 and the supply port 28 serve as a base for the wedge 19. Since the pressure oil can be supplied to the end portion, even when the wedge 19 is faced downward and the crushing work is performed, the oil can be surely supplied along the longitudinal direction of the sliding surface 19a of the wedge 19 and good lubrication can be performed.

[Effect of device]

By switching the switching valve 30, it is possible to select and supply pressure oil to one of the hose 26 and the hose 29, so that the wedge 19 is turned sideways,
When performing crushing work facing upward, discharge port 23 of pipe 21
Therefore, pressure oil can be supplied to the leading end of the wedge 19, and when crushing work with the wedge 19 facing downward, pressure oil can be supplied to the base end of the wedge 19 from the supply port 28 of the guide 18.

Therefore, when performing the crushing work with the wedge 19 facing downward, sideways, and upward, the sliding portion between the wedge 19 and the guide 18 can be satisfactorily lubricated.

Further, since the pipe 21 is arranged in the groove 20 formed in the guide surface 19a of the wedge 19 and the pipe 21 is closed by the molten metal 22, not only the guide surface 19a of the wedge 19 can be made flat, but also the wedge 19 It is not necessary to drill an oil hole extending from the side surface of the sliding surface 19a to the sliding surface 19a.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 8 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a wedge, and FIG. 2 is a transverse sectional view of a wedge.
FIG. 3 is a front view of the entire crusher taken along a direction orthogonal to the wedge sliding surface, FIG. 4 is a front view of the entire crusher taken along the wedge sliding surface direction, and FIGS. 5 and 6 are shown in FIG. V-V line sectional view, VI-V
FIG. 7 is a hydraulic circuit diagram, FIG. 8 is a front view of a vehicle equipped with a crusher, and FIGS. 9, 10, and 11 are sectional explanatory views of a conventional example. 10 is a cylinder, 18 is a guide, 19 is a wedge, 19a is a sliding surface, 20 is a concave groove, 20 is a groove, 21 is a pipe, 22 is molten metal, 23 is a discharge port, 24 is a supply port, 26 is a hose, 28 is a supply port , 29 is a hose, 30 is a switching valve, and 31 is a hydraulic pump.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shown 59-31693 (JP, U) Shown 62-110387 (JP, U) Shown 62-114994 (JP, U) Shown 62- 72391 (JP, U) Actual public Sho 49-36521 (JP, Y1)

Claims (1)

[Scope of utility model registration request] 1. A wedge-shaped rock crusher for crushing rock mass by pushing a wedge 19 between a pair of guides 18, 18 by a cylinder 10 to expand the pair of guides 18, 18, and a sliding surface of the wedge 19. Groove 2 extending in the longitudinal direction of 19a
A pipe 21 is provided at 0 and is closed with a molten metal 22 to form a flat surface. A supply port 24 is formed at the proximal end of the wedge 19 of the pipe 21, and a discharge port 23 is formed at the distal end, and a hose is provided at the supply port 24. 26 is connected to the guide 18, and a supply port 28 opened at the base end portion of the sliding surface 19a of the wedge 19 is formed in the guide 18. A hose 29 is connected to the supply port 28 and one of the hose 29 and the hose 26 is connected. An oil supply device for a wedge rock mass crusher, characterized in that a switching valve (30) for selectively supplying pressure oil discharged from a hydraulic pump (31) is provided.