JP3657832B2 - Swivel joint cover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine that uses the swivel joint, in particular, swivel joint to prevent scattering of fluid, such as due to the damage of the swivel joint pressure of the fluid in the accumulator or the like is used in locations in a state of being accumulator always Related to anti-scatter cover.
[0002]
[Prior art]
A swivel joint for guiding a high-pressure fluid pressured by an accumulator or the like to another device through a part with a rotational operation includes, for example, an inner member (fixed side) fixedly attached to the accumulator side, and an inner member And an outer member (rotating side) for guiding fluid pressure supplied from the inner member to a connected pipe or the like. The inner member is formed with a through-hole for flowing a high-pressure fluid in the axial direction thereof, and a sliding member between the outer member and the inner member is provided with a sealing material to prevent fluid leakage. .
[0003]
[Problems to be solved by the invention]
Since the inner member is provided with a through-hole through which a high-pressure fluid flows in the axial direction, a part with a small thickness is formed. For this reason, due to metal fatigue caused by long-term use, cracks are generated particularly in the thin wall portion, and in the worst case, there is a possibility of fracture. Also, the sealing material may deteriorate due to sliding or temperature change, and high-pressure fluid may leak.
[0004]
Such breakage of the inner member, scattering of the member and high-pressure fluid accompanying the deterioration of the sealing material may have an adverse effect on the surrounding environment.
[0005]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a swivel joint scattering prevention cover that can prevent high-pressure fluid and a damaged member from splashing outside even if the swivel joint is broken. There is to do.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention includes an inner member in which a fluid inflow / outflow port is formed, and an outer member that is externally fitted to the inner member so as to be rotatable and slidable and in which a fluid inflow / outflow port is formed. The anti-scatter cover for a swivel joint that connects the pipe connected to the inlet / outlet of the inner member and the pipe connected to the inlet / outlet of the outer member. the has a closing portion for covering the inner and outer members of the swivel joint, together form a cylindrical shape having an open mouth to allow the other to the protruding inflow outlet of the inner member of the swivel joint, the outer periphery in part, the through portion that allows the projecting outwardly of the inlet outlet of the outer member of the swivel joint when mounted contiguous with the open mouth portion is formed, toward the opening from the through portion into an L-shape There is provided a scattering prevention cover of the swivel joint provided with a notched groove which is continuously provided.
[0007]
Accordingly, the scattering prevention cover can be attached while the pipes are connected to the inner member and the outer member of the swivel joint, respectively, and the leakage of the leaked fluid and the damaged member due to the leakage of the fluid can be prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The scattering prevention cover of the swivel joint of the present invention will be described with reference to FIGS.
FIG. 1 is a partial cross-sectional view of a swivel joint to which the anti-scatter cover of the swivel joint of the present invention is attached, FIG. 2 is a partial cross-sectional view when the anti-scatter cover of the swivel joint according to the present invention is attached, and FIG. ) Is a front view of the scattering prevention cover of the swivel joint of the present invention, FIG. 3B is a side view of FIG. 3A, and FIG. 4 is a state in which the scattering prevention cover of the swivel joint of the present invention is attached to the swivel joint. FIG.
[0011]
In FIG. 1, the swivel joint 1 includes a fixed portion 10 and a rotating portion 20 that rotates around the fixed portion 10. The fixed portion 10 includes a fixed shaft 11 and the fixed shaft 11 that are connected to other devices such as an accumulator. A fastening portion 12 for fastening to the fastening shaft 11, a drill hole 13 that circulates fluid that is fastened to the fastening portion 12, and a fluid that flows to the fastening portion 10 and communicates with the drill hole 13. It consists of a through hole 14 that circulates in the rotating part 20. An inner member is formed by the fixed shaft 11 and the fastening portion 12.
[0012]
The rotating portion 20 is provided in the communication hole 21 that communicates with the through hole 14, the fastening portion 22 as an outer member that fastens the rotating portion 20 to another device, for example, a fluid pressure pipe, and the fastening portion 22. And a connection hole 23 as a fluid inflow / outlet communicating with the fluid.
[0013]
As described above, the fixed shaft 11 is provided with the through hole 14, and the thickness of the periphery of the through hole 14 is thin.
[0014]
Reference numeral 30 denotes a splash prevention cover for the swivel joint according to the present invention, which is formed by a cylindrical cylindrical body 33 provided with an opening 32 that is closed at one end side by an upper lid 31 and opened at the other end side. A through portion 34 is provided on the side of the cylindrical body 33 so that the fastening portion 22 of the rotating portion 20 protrudes outward at the time of mounting, and is continuously provided from the through portion 34 toward the opening 32 in an L shape. A cut-out groove 35 is provided. Further, small screws 36 and 36 are provided on both sides of the penetrating portion 34 so as to sandwich the penetrating portion 34. When the anti-scattering cover 30 is attached to the swivel joint 1, the small screws 36 and 36 are provided. The anti-scattering cover 30 is prevented from being detached from the swivel joint 1 by passing the wire rope 37.
[0015]
In order to attach the anti-scatter cover 30 to the swivel joint 1, the notch groove 35 of the anti-scatter cover 30 and the radial position of the fastening part 22 of the rotating part 20 are aligned, and the fastening part 22 moves in the notch groove 35. The swivel joint 1 is made to enter from the upper side to the lower side so that the fastening portion 22 is positioned in the through portion 34. In this state, the scattering prevention cover 30 is rotated in the radial direction, so that the fastening portion 22 is moved to the through portion 34. House in. Then, a wire rope 37 is spanned between the small screws 36. The removal procedure is the reverse of the above-described procedure.
[0016]
As a result, even if the thin-walled portion forming the through hole 14 provided in the fixed shaft 11 of the swivel joint 1 is damaged and leaks high-pressure fluid due to long-term use, the surrounding environment is not scattered and pollutes the surrounding environment. There is nothing. Furthermore, the damaged member is not scattered. Furthermore, even when the fluid pressure pipe is attached to the connection hole 23 of the rotating portion 20, the scattering prevention cover 30 can be easily attached, and the workability is good. Moreover, since the penetration part 34 and the notch groove 35 are not arrange | positioned on the same straight line, the cover 30 does not remove | deviate by the scattered high pressure fluid or the fracture | ruptured structural member.
[0017]
【The invention's effect】
The swivel joint scattering prevention cover of the present invention is configured as described above, so even if the swivel joint breaks and high pressure fluid leaks, it does not scatter around and does not pollute the surrounding environment. . Furthermore, the damaged structural member is not scattered. Furthermore, easy simply can be mounted even when the hydraulic lines to the inflow outlet of the outer member is attached, the workability is good. Further, since the through portion and the notched groove is not arranged on the same straight line, it does not deviate from the S w bell joints by the structural member in which high-pressure fluid or rupture splashing.
[Brief description of the drawings]
FIG. 1 is a front view partially showing a cross-section of a swivel joint to which an embodiment of a swivel anti-scattering cover of the present invention is attached.
FIG. 2 is a partial cross-sectional view of the swivel joint according to the present invention when the embodiment is mounted.
FIG. 3 (a) is a front view of an embodiment of the anti-scatter cover for a swivel joint of the present invention, and FIG. 3 (b) is a side view thereof.
FIG. 4 is an external view showing a state in which one embodiment of a swivel joint scattering prevention cover of the present invention is mounted on a swivel joint.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Swivel joint 10 Fixed part 11 Fixed shaft 12 Fastening part 13 Drilling hole 14 Through hole 20 Rotating part 21 Communication hole 22 Fastening part 23 Connection hole 30 Anti-scatter cover 31 Upper cover 32 Opening part 33 Cylindrical body 34 Through part 35 Notch groove

Claims (1)

A pipe connected to the inlet / outlet of the inner member, comprising an inner member formed with an inlet / outlet of the fluid and an outer member fitted on the inner member so as to be rotatable and slidable and formed with an inlet / outlet of the fluid And a splash prevention cover of a swivel joint that performs flow path connection with a pipe connected to the inflow / outlet of the outer member,
The scattering prevention cover has a closure portion for covering the inner and outer members of the swivel joint on one tubular with an open mouth to allow the protrusion of the inflow outlet of the inner member of the swivel joint on the other both a shape, on the outer peripheral portion, the through portion that allows the projecting outwardly of the inlet outlet of the outer member of the swivel joint when mounted contiguous with the open mouth portion is formed, the L-shape passes through the through portion A swivel joint scattering prevention cover, characterized in that a notch groove provided continuously toward the opening is provided .

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