KR20110000119A

KR20110000119A - Jig for unloading valve

Info

Publication number: KR20110000119A
Application number: KR1020090057497A
Authority: KR
Inventors: 홍종진
Original assignee: 현대제철 주식회사
Priority date: 2009-06-26
Filing date: 2009-06-26
Publication date: 2011-01-03

Abstract

PURPOSE: A jig for an unloading valve is provided to reduce the disassembling time of an unloading valve since an O-ring can be easily separated from a main body. CONSTITUTION: A jig for an unloading valve comprises a support rod(30), an impact member(50), a stopper(70), and an elastic member. The hook of the support rod is inserted into a valve body(12) and hangs on an O-ring. The impact member is movably installed in the support rod. The stopper is connected to the support rod. The stopper bumps against the impact member and pulls the support rod to the outside of the valve body. The elastic member supports the hook to be movable.

Description

JIG FOR UNLOADING VALVE {JIG FOR UNLOADING VALVE}

The present invention relates to a jig for an unloading valve, and more particularly, to a jig for an unloading valve that separates a support portion for supporting a piston from a main body and is combined with a separation portion to reuse the separated support portion.

In general, a steel mill is used to grapple (grapple) for picking up and moving various scraps. Such grapples are used in cranes, hoists or vehicles.

The crane is mainly composed of a rotatable swing, a main boom hinged to the end of the swing, an outer boom coupled to the end of the main boom and rotatably installed and an extension boom removably installed on the outer boom. A grapple composed of a plurality of tongs is installed on the rotator installed at the end of the extension boom.

Grapple is a gripping mechanism that is used to grab scraps such as scrap metal, and when loading and unloading, and a plurality of tongs are installed radially. These tongs are rotated inwardly as the hydraulic pressure is applied to each other to generate a gripping force, and when the hydraulic pressure is removed, the gripping force is released to release scrap metal.

The tongs are equipped with a hydraulic cylinder which rotates it inward or outward and an unloading valve for controlling the hydraulic cylinder. The unloading valve is configured to selectively open and close the flow path according to an electrical signal to control the movement of the hydraulic oil to the hydraulic cylinder.

On the other hand, the unloading valve has a built-in piston for opening and closing the flow path while moving in accordance with the electrical signal, it is provided with a support for supporting such a piston. This support is provided with an O-ring to prevent leakage of oil is pressed into the unloading valve body.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

If the piston of the conventional unloading valve is damaged or the O-ring is worn, the support and the O-ring must be separated from the unloading valve body. The O-ring is separated after the support is separated, and thus, the O-ring is installed to be in close contact with the inner wall of the main body, so that the O-ring is broken when the operation of pulling the O-ring is repeated.

Therefore, there is a need for improvement.

An object of the present invention is to provide a jig for an unloading valve, which is devised to improve the above problems, which is easy to separate, and which can suppress deformation and breakage of a product.

In order to achieve the above object, the present invention, the support is inserted into the valve body is formed a hook is caught on the O-ring; An impact member movably installed on the support; A stopper connected to the support and colliding with the impact member to pull the support to the outside of the valve body; And it provides an jig for an unloading valve, characterized in that it comprises an elastic portion for supporting the hook to flow.

In addition, the elastic part of the present invention includes a connecting rod of the 'V' shape branching from the end of the support, and provides a jig for an unloading valve, characterized in that the hook is formed at each of the connecting end.

In addition, the hook of the present invention provides a jig for an unloading valve, characterized in that the inclined portion inclined in the stopper direction is formed.

The jig for unloading valve according to the present invention is provided with a hook that is inserted into the main body to catch the O-ring, and is provided with an impact member for pulling the hook in a predetermined direction, so that the O-ring can be easily separated from the main body when the unloading valve is dismantled. The time taken to disassemble the unloading valve can be shortened, and the separated O-ring can be reused, thereby reducing the cost of repairing the unloading valve.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a jig for an unloading valve according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view schematically illustrating an unloading valve and a jig according to an embodiment of the present invention, and FIG. 2 is a view illustrating a state in which the unloading valve and the jig are coupled according to an embodiment of the present invention. 3 is a view showing a state in which the O-ring is separated using a jig according to an embodiment of the present invention.

1 to 3, the jig 100 for the unloading valve according to an embodiment of the present invention is inserted into the valve body 12, the support 30 is formed with a hook 32 is caught on the O-ring 14 ), A stopper 50 provided to be movable on the support 30, and a stopper provided on the support 30 and colliding with the impact member 50 to pull the support 30 toward the outside of the valve body 12. 70).

If the operation of the grapple (not shown) such as the operation of charging scrap into the electric furnace is repeated for a long time and malfunction or breakage occurs in the unloading valve 10, the unloading valve 10 is removed after separating the unloading valve 10 from the grapple. (10) is dismantled and repaired or replaced.

At this time, after separating the support portion (not shown) from the valve body 12, the support 30 is inserted into the valve body 12 to engage the O-ring 14 and the hook 32, the impact member 50 When moving the direction toward the stopper 70, the support member 30 is pulled out of the valve body 12 by an external force generated while the impact member 50 collides with the stopper 70.

As described above, the operation of causing the impact member 50 to collide with the stopper 70 is repeated a plurality of times to separate the O-ring 14 to the outside of the valve body 12.

When the support 30 is pulled by the impact generated by the collision of the impact member 50 and the stopper 70, an external force is transmitted to the inner end of the O-ring 14 on which the hook 32 is caught, and the valve body 12 Since the external force acts in the outward direction of the O-ring 14 is separated while sliding to the outside of the valve body 12.

At this time, the magnitude of the external force applied to the O-ring 14 is determined by the mass of the impact member 50 and the acceleration of the impact member 50 sliding toward the stopper 70, so that the mass of the impact member 50 is appropriately impacted. It is preferable that the member 50 is manufactured and the operator slides the impact member 50 such that the O-ring 14 is separated in stages by a plurality of operations.

As a result, the O-ring 14 can be easily separated from the valve body 12 while preventing the O-ring 14 from being deformed or damaged.

Looking at the operation of the jig for an unloading valve according to an embodiment of the present invention configured as described above are as follows.

If a malfunction or breakage occurs in the unloading valve 10, the support part is separated from the valve body 12, and the hook 32 of the jig 100 for the unloading valve 100 is inserted into the valve body 12 to insert the hook 32. The support 30 is placed so that the) hangs on the inner end of the O-ring 14.

Subsequently, when the operator slides the impact member 50 in the direction of the stopper 70, the external force generated while the impact member 50 and the stopper 70 collide with the valve body 12 from the inner end of the O-ring 14. Since the support 30 and the O-ring 14 is pulled out of the valve body 12 because it is generated in the direction.

When this operation is repeated a number of times, the O-ring 14 slides stepwise from the valve body 12 and eventually separates out of the valve body 12.

At this time, since the external force transmitted to the inner end of the o-ring 14 by the support 30 and the hook 32 is transmitted a plurality of times below a predetermined value in a predetermined direction, deformation or damage to the inner wall or the outer wall of the o-ring 14 occurs. Since it is not generated, after the repair or replacement of the unloading valve 10 is completed, the O-ring 14 may be combined with the valve body 12 and reused.

Figure 4 is a perspective view showing a jig for an unloading valve according to another embodiment of the present invention, Figure 5 is an operating state diagram showing a jig for an unloading valve according to another embodiment of the present invention, Figure 6 is a present invention In accordance with another embodiment of the jig for an unloading valve jig is shown.

4 to 6, the jig 200 for an unloading valve according to another embodiment of the present invention is inserted into the valve body 12 and has a support 130 provided with a hook 132 that is caught by the O-ring 14. ), A stopper 150 installed to be movable on the support 130, and a stopper provided on the support 130 and colliding with the impact member 150 to pull the support 130 out of the valve body 12. 170 and an elastic part 180 for supporting the hook 132 in a flowable manner.

When the hook 132 is inserted into the valve body 12, the elastic part 180 is compressed and the hook 132 and the support 130 are inserted into the valve body 12, and the insertion of the hook 132 is completed. When the hook 132 is moved outward by the restoring force of the elastic unit 180 is caught by the inner end of the O-ring (14).

The elastic part 180 includes a connecting rod 182 having a 'V' shape branched from an end of the support 130, and since the hooks 132 are formed at each end of the connecting rod 182, the hook 132 is formed of a valve body ( 12) Once inserted into the interior, a pair of hooks 132 may be caught by the inner end of the O-ring 14.

In addition, an external force is generated by the restoring force of the elastic unit 180 to open the hook 132 in the outward direction, so that the pair of hooks 132 are held on the inner end of the O-ring 14, so that the impact member ( When performing the operation of sliding 150, the support 130 is flowed to prevent the engaging of the hook 132 and the O-ring 14 is released.

The inclined portion 134 inclined in the direction of the stopper 170 is formed in the hook 132 so that the valve body 12 contacts the inclined portion 134 when the hook 132 is inserted into the valve body 12. Since the elastic unit 180 is compressed, the hook 132 can be easily inserted without the operator compressing the elastic unit 180.

This makes it possible to provide a jig for an unloading valve which can be easily separated and prevents deformation and breakage of the product.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

In addition, the jig for the unloading valve has been described as an example, but this is merely illustrative, and the jig of the present invention may be used for other products other than the unloading valve.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is an exploded perspective view schematically showing an unloading valve and a jig according to an embodiment of the present invention.

2 is a view illustrating a state in which an unloading valve and a jig are coupled according to an embodiment of the present invention.

3 is a view showing a state in which the O-ring is separated using a jig according to an embodiment of the present invention.

Figure 4 is a perspective view showing a jig for an unloading valve according to another embodiment of the present invention.

5 is an operating state diagram showing a jig for an unloading valve according to another embodiment of the present invention.

6 is a view showing a coupling state of the jig for an unloading valve according to another embodiment of the present invention.

10: unloading valve 30: support

50: impact member 70: stopper

100: jig

Claims

A support having a hook inserted into the valve body and caught by the O-ring;

An impact member movably installed on the support;

A stopper connected to the support and colliding with the impact member to pull the support to the outside of the valve body; And

Jig for an unloading valve, characterized in that it comprises an elastic portion for supporting the hook to flow.

The method of claim 1,

The elastic part includes a connecting rod having a 'V' shape branching from the end of the support, jig for the unloading valve, characterized in that the hook is formed at each of the connecting end.

The method of claim 2,

Jig for the unloading valve, characterized in that the inclination portion inclined in the stopper direction is formed on the hook.