JPH0574768U - Tool for opening and closing valves - Google Patents

Abstract

(57) [Summary] [Purpose] A single person can open and close the valve in a stable posture in a short time, and can open and close valves at high altitudes without using a step. We provide a valve opening / closing tool that can handle the handle. [Structure] A cylindrical body 19 having a ratchet gear 12 ring-attached to an intermediate outer periphery is projectingly penetrated to a head portion 1a of a ratchet wrench 1 at both ends so as to be rotatable in a rotational direction, while a boss a ₂ of a valve round handle a is fitted. Notch 7 with hook 7 that is freely and radially engageable with the boss assembly of handle hawk b
Bottomless bowl-shaped casing 2 in which a is absent at regular intervals at the tip opening edge
The base end of the valve screw shaft penetrating guide 3 in which the protective rubber 13 is lined is detachably fitted to the projecting other end of the cylindrical body 19. It is characterized by

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve opening / closing tool used when opening / closing a valve by operating a round handle.

[0002]

[Prior Art]

 This kind of conventional valve opening / closing operation will be described with reference to the front view and side view of FIGS. In the figure, a is a round valve handle, b is a fork, c is a pipe, d is a worker, e is a pipe wrench, f is a valve screw shaft, g is a valve case, h is a step, and i is a hexagonal nut. .

Since there is no dedicated tool for opening and closing the valve in the past, when it is performed with bare hands, the pressure of the fluid in the valve case g, the sticking of viscous substances, rust and rotary circulating agent, and the tightening of the handle may cause the operator to The valve opening / closing operation was sometimes difficult for d1 person. In this case, two workers d hold the valve round handle a with their bare hands to rotate and open or close the valve, or, as shown in FIG. 6, one operator d1 uses a pipe wrench e to remove the valve round handle. The outer ring a _{1 of a} was sandwiched and rotated to open and close the valve.

[0004]

[Problems to be solved by the device]

However, it is inefficient to send two workers to open and close the valve as mentioned above. On the other hand, since the pipe wrench e used when the valve opening / closing operation is performed by one person is used to pinch the outer ring a ₁ of the valve round handle a, force is applied as the valve is rotated at this pinching position. It takes time and effort to change the position to an easy position and wastes physical strength.

Further, the pipe wrench e is heavy and difficult to handle, and is particularly slippery when the valve to be opened / closed is wet, and there is a risk of falling. If the pipe wrench e falls, there is a possibility that the worker d's body, peripheral equipment, etc. may be damaged. Also, when the valve is installed at a high place, the worker d was opening and closing the valve on the step h, so there was a risk of falling from the step h.

In view of the above conventional problems, the present invention provides a valve that can be opened and closed by a single person in a short time, and can be opened and closed in a stable posture without using a step even for a valve in a high place. It is intended to provide a tool for opening and closing.

[0007]

[Means for Solving the Problems]

 The solution to the above-mentioned problems is achieved by adopting the novel characteristic construction means which the present invention enumerates below. That is, the first feature of the present invention is that the cylindrical body having the ratchet gear ring attached to the middle outer periphery is projectingly attached to the head of the ratchet wrench so as to be rotatable in the opposite direction, while the boss of the valve round handle is penetrated. The base end of the bottomless bowl-shaped casing in which the cutouts with hooking claws that can freely fit and engage with the boss collecting portion of the handle hawk that extends radially is provided at regular intervals at the tip opening edge of the cylindrical body. A valve opening / closing tool is detachably fitted to one protruding end, and the base end of a valve screw shaft penetrating guide lined with another protective rubber is detachably fitted to the other protruding end of the cylindrical portion.

A second feature of the present invention is a valve opening / closing tool in which the ratchet wrench in the first feature is formed so that its handle end can be attached to the extension pipe by appropriate means.

[0009]

[Action]

 Since the present invention has adopted the above-described means, it has a ratchet mechanism that rotates the gears only in the switching direction.Therefore, the valve screw shaft is not positioned each time, and the valve screw shaft is shaped like a bottomless bowl, a cylindrical body, It can be easily operated by engaging the boss assembly of the handle hawk with the notch with the hooking claw on the casing opening edge so that the boss of the valve round handle can be swallowed consistently over the valve screw shaft penetrating guide. By connecting an extension pipe to the ratchet handle, the valve at a higher position can be easily opened and closed.

[0010]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a valve opening / closing tool of this embodiment, FIG. 2 is a rear view of the same assembling, FIG. 3 is a side view of the same assembling, and FIG. 4 is a front view of the same assembling. In the figure, α is a valve opening / closing tool, 1 is a ratchet wrench, 1a is a head, 1b is a handle, 2 is a bottomless bowl-shaped casing, 3 is a valve screw shaft penetrating guide, 4 is a detachable bolt, and 5 is a tightening nut. , 6 is a fixing nut, 7 is a latching claw, 8 is a fixing bolt, 9 is a changeover switch, 10 is a changeover switch pin, 11 is a changeover retainer, 12 is a ratchet gear, 13 is a protective rubber, 14 is an extension pipe, 15a , 15b is an extension pipe mounting hole, 16a is a mounting bolt for the extension pipe 14, 16b is the same mounting wing nut, 17 is a tap hole, 18 is a fixing notch, and 19 is a cylindrical body.

The specifications of the valve opening / closing tool α of this embodiment will be described. On the ratchet wrench 1 head 1a, a cylinder 19 having a ratchet gear 12 attached to the middle outer periphery is rotatably attached by protruding both ends thereof, and the changeover switch 9 exposed to the lower side of the ratchet gear 12 is operated. It can be switched freely to turn it clockwise or counterclockwise. On the other hand, at the mounting end of the bowl-shaped casing 2, a hook claw 7 and a notch are formed so as to be engageable with a boss gathering portion of a group of forks b extending radially from the boss a _{2 at the} center of the valve round handle a. 7a is provided at the opening edge of the bowl-shaped casing 2.

Also, fixing nuts 6 are welded to three bolt through holes (not shown) penetrating at three equiangular intervals near the base end of the bowl-shaped casing 2, and the fixing nut 6 is welded. The bowl-shaped casing 2 is attachable / detachable to / from the cylindrical body 19 by the pressing force of the attaching / detaching bolt 4 and the tightening nut 5 which are screwed with the pressing force 6 to the fixing notch 18 of the protruding end of the cylindrical body 19. The size of the valve round handle a is interchangeable.

On the other hand, the valve screw shaft penetrating guide 3 is fixed to the projecting end of the cylindrical body 19 with three fixing bolts 8, and a protective rubber 13 is attached inside to protect the valve screw shaft f from damage. Further, the extension pipe 14 can be externally attached to the end of the handle 1b of the ratchet wrench 1 by a mounting bolt 16a and a wing nut 16b, and is used when opening and closing a valve remote from a high place.

Since the valve opening / closing tool α according to the present embodiment exhibits such a specific embodiment, the opening / closing operation of the valve will be described below with reference to the front view and the side view of FIGS. 5A and 5B. explain. In the figure, the same members as those in the conventional example are designated by the same reference numerals. First, the valve opening / closing tool α is inserted from the outer end of the valve screw shaft f from the opening side of the bowl-shaped casing 2.

At this time, the valve screw shaft f is in a state in which the bowl-shaped casing 2, the cylindrical body 19, and the valve screw shaft penetrating guide 3 having the protective rubber 13 attached inside are consistently inserted. Next, the valve opening / closing tool α is inserted into the valve screw shaft f, and is brought close to the valve handle a, and the boss a ₂ at the center of the valve round handle a is swallowed and the boss of the fork b radially extends. The hooks 7 are fitted and abutted between the forks b so that the cutouts 7a of the bowl-shaped casing 2 are engaged with the collecting portions.

After that, the rotation direction of the ratchet mechanism between the cylinder body 19 connecting the head of the ratchet wrench 1 and the bowl-shaped casing 2 is set to either the open or closed direction by the changeover switch 9, and the ratchet is set. Hold the handle 1b of the wrench 1 and rotate it in the opening or closing direction. As described above, when the valve round handle a and the bowl-shaped casing 2 do not match in size, the bowl-shaped casing 2 is removed from the cylindrical body 19 and replaced with one having the same size. In addition, when opening and closing a valve remote from a high place, an extension pipe 14 may be externally added to the handle 1b end of the ratchet wrench 1.

By the way, in the case of opening and closing the valve of the pipe during the maintenance work of the turbo chiller, conventionally, it takes about 10 minutes for two people to take turns using the pipe wrench e and take one step by turns. Although it was necessary, by using the valve opening / closing tool α according to the present invention, one person could close the door in about 5 minutes without using the step h.

[0018]

[Effect of the device]

 Thus, according to the present plan, by adopting a ratchet mechanism that can be reversibly switched over without danger of working at height, the worker does not have to change the position when opening and closing the valve, and can work in a stable posture. In addition to being able to do it, one person can work, so the labor and work time of the worker can be cut in half. Furthermore, by exchanging and replacing the bowl-shaped casing, it has excellent practicability and usefulness such as being able to handle various round valve handles.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a valve opening / closing tool according to an embodiment of the present invention.

FIG. 2 is a rear view of the same as above.

FIG. 3 is an assembled side view of the same.

FIG. 4 is an assembled front view of the same.

5 (a) and 5 (b) are respectively a front view and a side view for explaining an opening / closing operation of a valve using the same as above.

6 (a) and 6 (b) are respectively a front view and a side view for explaining the opening / closing operation of a conventional valve.

[Explanation of symbols]

a ... Valve Rotary handle a ₁ ... outer ring a ₂ ... boss b ... Hawk c ... Pipe d ... operator e ... pipe wrench f ... valve screw shaft g ... valve case h ... springboard i ... Hexagon length nuts alpha ... valve opening and closing tool 1 ... Ratchet wrench 1a ... Head 1b ... Handle 2 ... Bottomless bowl type casing 3 ... Valve screw shaft penetrating guide 4 ... Detachable bolt 5 ... Tightening nut 6 ... Fixing nut 7 ... Latching claw 7a ... Notch 8 ... Fixing Bolt 9 ... Changeover switch 10 ... Changeover switch pin 11 ... Changeover presser 12 ... Ratchet gear 13 ... Protective rubber 14 ... Extension pipe 15a, 15b ... Extension pipe mounting hole 16a ... Mounting bolt 16b ... Mounting nut 17 ... Tap hole 18 ... Fixing Notch 19 ... Cylindrical body

Front page continuation (72) Inventor Yoshiharu Hashizume 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Akira Hori 1-1-6 Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph Telephone Corporation (72) Inventor Yoshiaki Yukawa 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph Telephone Corporation (72) Inventor Hayato Hirota 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph Phone Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A cylindrical body having a ratchet gear attached to the middle outer periphery is projectingly inserted into the head of a ratchet wrench so that the rotation direction can be switched, and the boss of a valve round handle can be fitted and radially. A base end of a bottomless bowl-shaped casing, in which notch portions with hooking claws engageable with the boss gathering portion of the extending handle hawk are provided at regular intervals at the tip opening edge, is detachably fitted to the protruding end of the cylindrical body. On the other hand, the valve opening / closing tool is characterized in that the base end of a valve butterfly shaft penetrating guide lined with a protective rubber is removably fitted to the other protruding end of the cylindrical body. 2. The valve opening / closing tool according to claim 1, wherein the ratchet wrench has a handle end formed so as to be attachable to the extension pipe by appropriate means.