JP2009006403A - Valve handle operation tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve handle operation tool having superior operability to make a valve handle into a completely closed state without damaging the valve handle, regardless of size and shape of the valve handle. <P>SOLUTION: This valve handle operation tool is provided with a fixed operation rod 3 having a fixed leg 7 bent at a substantially right angle with a front end to abut on the valve handle 2, a movable operation rod 4 stored by being expandably slid in a hollow part 6 formed in the fixed operation rod 3 and having a movable leg 13 bent at a substantially right angle with the front end to abut on the valve handle 2, and a positioning means 20 provided between the movable operation rod 4 and the fixed operation rod 3 to fix a sliding position of the movable operation rod 4 in relation to the fixed operation rod 3. When the movable operation rod 4 is elongated/contacted in the hollow part 6 of the fixed operation rod 3 and the valve handle 2 is held and adjusted between the fixed leg 7 and the movable leg 13, relative displacement of the movable operation rod 4 in relation to the fixed operation rod 3 is restrained by the positioning means 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a valve handle operating tool (Wilkey) used to open and close a valve handle which is a handle type manual valve frequently used in plant facilities and the like.

Conventionally, when opening and closing the handle type manual valve attached to the piping of plant equipment installed in the power plant premises, it is performed using a dedicated valve handle operating tool, but the size and shape of the valve handle vary. In order to cope with them, several types of valve handle operating tools are prepared and used separately. However, it is difficult to carry several types of valve handle operating tools separately, and management and storage are troublesome. As a technique for solving the problem, for example, a technique described in Patent Document 1 is known. The technique described in Patent Document 1 is a configuration in which a movable leg is slidably provided on an operating rod having a fixed leg at the tip. When the valve handle is opened and closed, the width between the fixed leg and the movable leg is increased. By adjusting and hooking on the valve handle and rotating the operating rod clockwise or in the opposite direction to open and close the valve handle, it is possible to cope with valve handles of various sizes.
Japanese Utility Model Publication No. 6-17874

  However, in the technique described in Patent Document 1, when a small valve handle is operated, the fixed leg (fulcrum) and the movable leg (action point) are narrowed, but the movable leg is slid on the operating rod. Since it is a structure, only the space | interval of a fulcrum and an action point becomes short, and there exists a possibility of acting on a valve handle more than necessary and damaging a valve handle. Further, since the base portion of the movable leg has a cylindrical shape, it is difficult to horizontally move the movable leg with respect to the operating rod, and there is a problem that the efficiency of the opening / closing operation of the valve handle is lowered. Furthermore, when opening and closing the valve handle, especially when the valve handle is installed obliquely, if the direction of applying the operating force to the valve handle is mistaken, the valve handle operating tool will slip off the valve handle, There is a risk of injury by crashing into adjacent piping.

  The present invention has been made in view of the above-described circumstances. Regardless of the size of the valve handle, the valve handle is not damaged, and the valve handle is tightened to be finally in a completely closed state. An object of the present invention is to provide a valve handle operating tool that can be efficiently and safely performed and has excellent operability.

  In order to achieve the above object, a valve handle operating tool according to the present invention includes a fixed operation rod having a fixed leg that is bent substantially perpendicularly to the front end and can contact the valve handle, and a hollow portion formed in the fixed operation rod. And a movable operating rod having a movable leg that is bent at a substantially right angle and can be brought into contact with the valve handle, and between the movable operating rod and the fixed operating rod. Positioning means for fixing a slide position of the movable operation rod with respect to the fixed operation rod, and extending and retracting the movable operation rod in a hollow portion of the fixed operation rod, so that the fixed leg and the movable leg are positioned between the fixed leg and the movable leg. When the valve handle is held and adjusted, the positioning means restrains the relative displacement of the movable operating rod with respect to the fixed operating rod.

  According to this, since the fixed leg as the action point for the valve handle is integrally formed on the operating rod side, when the valve handle with a small diameter is opened and closed, the movable leg as the fulcrum and the action point When the interval is adjusted to be small, the interval between the movable leg and the rear end of the operating rod to which rotational torque (valve handle opening / closing torque) is applied is also shortened. Therefore, it is possible to suppress the opening / closing operation force that is more than necessary from acting on the valve handle, and to avoid damage due to the excessive force.

  The positioning means preferably includes a fastener screwed to the fixed operating rod, and a slide groove formed on the movable operating rod and formed in a sliding direction in which the fastener can be engaged. .

According to this, when the movable operating rod is slid with respect to the fixed operating rod, the tip of the fastener screwed into the fixed operating rod can be slid in a state of being fitted in the slide groove portion of the movable operating rod. For this reason, the movable leg does not rotate around the fixed operating rod carelessly and can be moved horizontally, that is, slid with both the fixed leg and the movable leg facing in the same direction. Can be improved.
The positioning means is provided along the axial direction of the fixed operation rod, and a slide groove portion having wavy irregularities arranged opposite to each other, and the irregularities provided on the movable operation rod and formed on the left and right sides of the slide groove portion. A spring member that expands and contracts in a direction substantially perpendicular to the sliding direction by a spring force, and a stopper that engages with the spring member so as to position and maintain the engagement between the spring member and the irregularities. When the positioning operation is fixed, the spring member engages with the projections and depressions. However, when the movable operation rod is slidably adjusted with respect to the fixed manipulation rod, the spring member responds to the projections and depressions by its own spring force. The movable operating rod may be allowed to slide on the fixed operating rod while elastically deforming.

  According to this, each time the spring member is elastically deformed and moves over the convex portion of the concave and convex portions, it engages with the concave and convex portions at appropriate positions of the slide groove portion while repeating elastic deformation of expansion and contraction. In this state, by engaging the stopper member with the spring member, the positioning of the spring member with respect to the unevenness is strengthened. As a result, the fixed operating rod and the movable operating rod are positioned and fixed by the positioning means.

  In this case, it is preferable that the pair of wavy irregularities arranged opposite to the slide groove are opposed to each other so that they have the same phase, that is, the directions of the irregularities are directed in the same direction. According to this, it is possible to finely adjust the slide amount.

  The stopper member may have a plurality of legs, and the legs may be engaged with the unevenness. It is also possible to magnetize the stopper member with a magnetic force, or to form it with a permanent magnet, and to magnetically attach to the fixed operating rod or the movable operating rod. Thereby, engagement / disengagement of the stopper member and fixing operation of the movable leg can be easily performed with one touch, and loss of the stopper member can be prevented.

  In addition, the positioning means is provided along the axial direction of the fixed operation rod, and a slide groove portion in which wavy irregularities are arranged so as to face each other, and a fixed claw provided on the movable operation rod so as to be detachable from the irregularities. And a spring member that is provided between the fixed claw and the movable operating rod and urges the fixed claw with a spring force in a direction that always engages with the unevenness, and the movable operating rod is fixed to the fixed operation. When the slide adjustment is performed with respect to the rod, the movable operation rod can be slid onto the fixed operation rod in a state where the fixed claw is released above the slide groove portion against the spring force of the spring member. Good.

  According to this, the fixed claw can be lifted upward with a finger against the spring force of the spring member, and in this state, the movable operating rod can be slid and adjusted with respect to the fixed operating rod, and the valve handle can be gripped or When the fixed claw is released from the finger when it is in a gripping state, the fixed claw is fitted into the unevenness of the slide groove portion from above by the spring force of the spring member. Thus, the movable operating rod can be easily positioned by slide adjustment with respect to the fixed operating rod.

  In this case, it is preferable that the fixed claw is formed of a permanent magnet and is magnetically attached to the fixed operation rod or the movable operation rod. This makes it possible to easily engage and disengage the fixed claw and position and fix the movable leg with one touch, and to prevent the fixed claw from being lost.

  Moreover, it is preferable that the fixing operation rod is detachably provided with a grip member that can extend the length of the fixing operation rod.

  According to this, since the length of the fixed operation rod can be increased when the grip member is attached to the fixed operation rod, the distance between the rear end of the fixed operation rod as the power point and the fixed leg as the action point is increased. It is possible to adjust the valve handle so that it can be tightened flexibly according to the size of the valve handle.

  Further, an anti-slip member is provided on the fixed leg of the fixed operating rod and the movable leg of the movable operating rod, and the movable leg of the movable operating rod is substantially orthogonal to the axis of the movable operating rod. It is preferable to form an extending portion extending in a letter shape.

  According to this, it is possible to prevent the valve handle operating tool from slipping on the valve handle due to the presence of the anti-slip member, and to operate the T-shaped extension by hooking the valve handle. The situation where the valve handle is detached can be prevented.

  According to the present invention, even when a small valve handle is opened and closed, it is possible to effectively suppress an excessive force from acting on the valve handle, and to prevent damage to the valve handle or the valve itself. Further, the movable leg can be slid in a stable posture with respect to the fixed operating rod, and the opening / closing operation of the valve handle can be performed stably, safely and efficiently.

  Embodiments of the present invention will be described below. 1A to 1E are configuration diagrams showing an external configuration of the valve handle operating tool 1 according to the present embodiment, FIG. 2 is an explanatory diagram for explaining the operation of the valve handle operating tool 1, and FIG. ) To (c) are operation explanatory views for explaining a state in which the valve handle 2 is opened and closed by using the valve handle operating tool 1.

  The valve handle operating tool 1 includes a fixed operating rod 3 shown in FIG. 1A, a movable operating rod 4 shown in FIG. It is comprised by the main components with the below-mentioned positioning means 20 which restrains a relative displacement with the operating rod 4. FIG. The fixed operating rod 3 as a whole has a predetermined mechanical strength using, for example, an iron material. The fixed operation rod 3 has a straight rod-shaped operation rod portion 5, and a hollow portion 6 having a circular cross section along the slide direction, that is, the horizontal direction, is provided therein. Two screw holes 8 are provided on the side surface of the operation rod part 5, and a fastener 9 is screwed into the screw hole 8 to reach the hollow part 6. Further, a fixed leg 7 that is bent at a substantially right angle and extends downward is formed at the front end of the operating rod part 5 of the fixed operating rod 3, and the front end face 10 of the fixed leg 7 is shown in FIG. 1 (e). In addition, it is formed so as to form a plane in a direction orthogonal to the horizontal direction of the operating rod part 5. Furthermore, the fixed leg 7 is covered with, for example, a rubber non-slip member 11 whose surface is uneven.

  The movable operation rod 4 is formed of an iron material having mechanical strength as a whole, like the fixed operation rod 3, and has a circular cross section that is slidably accommodated in the hollow portion 6 and accommodated. Part 12. At the front end of the slide portion 12, a movable leg 13 that is bent at a substantially right angle and extends downward is provided. A slide groove portion 14 extending in the horizontal direction is provided on the side portion of the slide portion 12 in a range extending from the rear end to the vicinity of the front end, and the front end of the fastener 9 screwed into the screw hole 8 is engaged therewith. The groove depth of the slide groove portion 14 is such that the distal end of the fastener 9 is fitted in a slight amount, thereby preventing the movable operation rod 4 from rotating relative to the fixed operation rod 3 and at the same time fixing the movable operation rod 4. The position can be freely adjusted by smoothly sliding in the horizontal direction with respect to the flange 3. In addition, the lower end of the movable leg 13 is provided with an extending portion 15 extending in a T shape substantially orthogonal to the axial direction of the movable operating rod 4, that is, the horizontal direction. Further, the outer surface of the movable leg 13 is covered with a rubber non-slip member 16 having an uneven surface as in the case of the fixed leg 7 described above. The length of the movable leg 16 between the slide portion 12 and the extending portion 15 is set to a dimension that allows a sufficient margin for gripping the upper and lower surfaces of the valve handle 2.

  The positioning means 20 is formed by the screw hole 8, the fastener 9 screwed into the screw hole 8, and the slide groove portion 14 detachable from the fastener 9.

  By accommodating the slide portion 12 of the movable operating rod 4 in the hollow portion 6 of the fixed operating rod 3, the general valve handle operating tool 1 is assembled. Thus, by sliding the movable operation rod 4 with respect to the fixed operation rod 3, the length between the fixed leg 7 and the movable leg 13 can be freely adjusted. The tool 9 is screwed into the screw hole 8 and engaged with the slide groove portion 14 to be tightened so that positioning and fixing can be performed so as to restrain relative displacement of the movable operation rod 4 with respect to the fixed operation rod 3.

  FIG. 2 is a configuration diagram showing the valve handle operating tool 1 formed by incorporating the movable operating rod 4 into the fixed operating rod 3. By operating the positioning means 20 in the valve handle operating tool 1, The movable operating rod 4 extends from the fixed operating rod 3 to protrude from the length L1 to L2 between the movable leg 13 and the fixed leg 7, as shown in FIG. On the contrary, it can be operated so as to be contracted and displaced from L2 to L1 as shown in FIG.

  The operation of the valve handle operating tool 1 having the above configuration will be described. FIG. 3 is an operation explanatory view showing the operation of opening and closing the valve handle 2 using the valve handle operating tool 1. When the valve handle operating tool 1 is not used, the movable operating rod 4 is normally stored deeply in the fixed operating rod 3 and the fastener 9 is tightly screwed in so that the movable operating rod 4 slides from the fixed operating rod 3. Carry out inadvertently outside and carry it in this state. When the valve handle 2 is opened, for example, the valve handle operating tool 1 is set on the left half of the valve handle 2 as shown in FIG. That is, the fastener 9 is loosened, the movable operation rod 4 is slid out of the fixed operation rod 3 by a predetermined length, and the extension portion 15 is inserted between the spoke portions 2a of the valve handle 2 from above to below. The movable leg 13 is brought into contact with the ring portion 2b of the valve handle 2 and the corner portion of the spoke portion 2a or the vicinity thereof. On the other hand, the fixing leg 7 of the fixing operation rod 3 is applied to the enormous portion 2 c formed on the ring portion 2 b of the valve handle 2. After the valve handle 2 is grasped by the fixed leg 7 and the movable leg 13 to confirm that there is no backlash, the fastener 9 is tightened again, and the relative movement of the movable operation rod 4 with respect to the fixed operation rod 3 is restricted (locked). To do. In this state, the operator applies rotational torque counterclockwise as indicated by an arrow to the fixed operating rod 3 while pressing the operating rod 5 toward the valve handle 2. Thus, the valve handle 2 can be opened.

  On the contrary, when the same valve handle 2 is closed, the valve handle operating tool 1 is placed on the right half of the valve handle 2 as shown in FIG. After passing through the side, the movable leg 13 abuts on the corner formed by the ring portion 2b and the spoke portion 2c or in the vicinity thereof. Then, after confirming that there is no play between the valve handle 2 and the valve handle operating tool 1, the fastener 9 is tightened in the same manner as in the above opening operation to fix the movable operation rod 4 to the fixed operation rod 3. Lock to slide against. The valve handle 2 can be closed by rotating in the clockwise direction indicated by the arrow while pressing the valve handle operating tool 1 against the valve handle 2.

  Further, when opening and closing the valve handle 2 having a small diameter, as shown in FIG. 3C, the valve handle 2 is slid so as to reduce the distance between the fixed leg 7 and the movable leg 13, and the movable leg 13 is moved to the valve handle 2. The movable operating rod 4 is positioned and fixed to the fixed operating rod 3 by the positioning means 20 after confirming that there is no backlash. Then, the opening / closing operation can be performed by rotating the valve handle operating tool 1 clockwise or counterclockwise while pressing the operating lever 5 toward the valve handle 2 side.

According to the valve handle operating tool 1 according to the present embodiment, when the valve handle 2 having a small diameter is operated in the prior art, an excessive force is applied to the valve handle, so that the valve handle is damaged. The situation can be solved. That is, as shown in FIG. 4, the valve handle operating tool (Wilky) is an F-shaped jig 100 using the lever principle, and has a pair of legs 101, 102, and between the legs 101 and 102. It is assumed that the valve handle is opened and closed by rotating the valve handle operating tool 100 with the valve handle interposed therebetween. Now, in FIG. 4, P1 is a force point, P2 is an action point, and P3 is a fulcrum. Further, d1 is a distance between the fulcrum P3 and the force point P1, d2 is a distance between the fulcrum P3 and the action point P2, F1 is a force applied to the force point P1, and F2 is a force obtained at the action point P2. At this time, the relational expression of the lever principle is
d1 · F1 = d2 · F2 Formula (1)
It becomes.

When F2 is obtained by converting equation (1),
F2 = d1 · F1 / d2 Expression (2)
Get.

  When operating a valve handle with a small diameter, if a force equal to or greater than that of a valve handle with a large diameter is applied to the valve handle, the valve handle will be damaged. As it gets smaller, it needs to be suppressed as much as possible.

  For that purpose, F2 may be reduced. In this case, if the force F1 applied to the force point P1 is the same, it is necessary to shorten d1 from the equation (2) or lengthen d2.

  The valve handle operating tool of the prior art has a structure in which the action point P2 becomes a movable part (leg) and slides on the operating rod. For this reason, the point of action P2 approaches the fulcrum P3 as the size of the valve handle decreases. When the relationship of this structure is applied to equation (2), d1 is constant and does not change, but only d2 is Shorter. As a result, the force F2 acting at the operating point increases as the size of the valve handle decreases. This increased force F2 acts on the valve handle, increasing the damage to the valve handle.

  In contrast, the valve handle operating tool 1 according to the present embodiment has a structure in which the fulcrum P3 becomes a movable leg and slides on the fixed operating rod 3. That is, as the size of the valve handle 2 is reduced, the fulcrum P3 is close to the action point P2, and at the same time, the fulcrum P3 is close to the force point P1. Therefore, if this structural relationship is substituted into equation (2), d1 and d2 are shortened, so that the force F2 is also relatively small. That is, it is possible to suppress an increase in the force acting on the fixed leg 7 in the present embodiment as the action point P2. Therefore, when the valve handle 2 having a small diameter is opened and closed using the valve handle operating tool 1 according to this embodiment as shown in FIG. 3C, an excessive force is applied to the valve handle 2 more than necessary. This is effective in preventing damage to the valve handle.

In addition, according to the present embodiment, the slide groove portion 14 slides in a telescopic manner on the hollow portion 6 of the fixed operating rod 3 while being guided by the tip of the fastener 9, so that various shapes and sizes are provided as shown in FIG. 5. The valve handle 2 can be handled with a single valve handle operating tool 1, and the valve handle operating tool 1 can be easily transported, stored and managed. At this time, since the movable leg 13 slides without rotating around the fixed operating rod 3, the movable leg 13 can be slid in a stable state (moved horizontally). Further, since the anti-slip members 11 and 16 are covered with the fixed leg 7 and the movable leg 13, and the front end face 10 facing the movable leg 13 side of the fixed leg 7 is formed in a plane, the valve handle operating tool 1 In addition to the increase in the frictional resistance against the valve handle 2, the contact area also increases, and the valve handle operating tool 1 can be prevented from sliding from the valve handle 2 when the valve handle operating tool 1 is operated. It becomes possible to close.
Further, even if the valve handle 2 does not have the enormous portion 2c (see FIG. 3) and the diameter of the valve handle is small, the valve handle operating tool 1 moves over the valve handle as shown in FIG. Can prevent slipping. Further, since the T-shaped extension portion 15 is provided at the lower end of the movable leg 13, when the extension portion 15 is hooked and operated from the lower side (back side) of the valve handle 2, the valve handle operating tool 1 is This prevents slipping off the handle 2 and unintentional disengagement. As a result, it is possible not only to secure a safe work, but also to concentrate on the opening and closing work with confidence, so that the valve handle can be completely closed accordingly.

  A first modification of the above embodiment will be described. In the embodiment, the positioning means 20 is a screw hole 8 formed in the operation rod portion 5 of the fixed operation rod 3, a fastener 9 screwed into the screw hole 8, and a slide groove portion that is guided by the fastener 9 and moves in the horizontal direction. 14 or the like, but instead of this, a first modified example provided with positioning means 20 as shown in FIGS. That is, the wavy uneven portion 22 is formed in the slide groove portion 21 extending in the slide direction on the operation rod portion 5 of the fixed operation rod 3. The concavo-convex portions 22 formed along the slide groove portion 21 are arranged to face each other so that the concavo-convex portions 22 face in the same direction.

  A switch-like positioning operation part 23 having a rectangular outer shape which is movable by being guided by the slide groove part 21 is attached to the movable operation rod 4 via a fastener 26. In the positioning operation portion 23, for example, a mountain-shaped spring 25 which is formed of a leaf spring and has a fixing claw 24 protruding in the direction of the concavo-convex portion 22 is accommodated symmetrically. When the convex fixing claw 24 coincides with the position corresponding to the concave portion of the concavo-convex portion 22 on the other side, the fixing claw 24 protrudes outward, but when it is at the position corresponding to the convex portion of the concavo-convex portion 22. The spring 25 is pushed into the convex portion and is elastically deformed against the spring force to be retracted to the positioning operation portion 23 side.

  Further, as shown in FIGS. 7C and 7D, the spring 25 is provided with a stopper 27 that can be engaged with the fixing claw 24. When the stopper 27 is inserted and engaged with the fixed claw 24 protruding outward from the positioning operation portion 23, the fixed claw 24 is prevented from being retracted into the positioning operation portion 23. As a result, the positioning and fixing of the movable operation rod 4 with respect to the fixed operation rod 3 is surely performed.

  In the valve handle operating tool 1 according to the modified example, as shown in FIGS. 7A and 7B, when the movable operating rod 4 is slide-adjusted with respect to the fixed operating rod 3, the stopper 27 is provided. The positioning operation part 23 is slid along the slide groove part 21 in the pulled-out state. As a result, as shown in FIG. 7C, the fixed claw 24 of the spring 25 of the positioning operation unit 23 slides while elastically contacting the uneven portion 22 of the slide groove portion 21. At this time, the fixed claw 24 Each time it moves over the convex portion 22, it is compressed and deformed, and every time it passes through the concave portion of the concave and convex portion 22, it is stretched and deformed into the concave portion. When the slide adjustment is performed at a predetermined position, the stopper 27 is inserted in such a manner that the stopper 27 is included in the fixed claw 24 protruding from the positioning operation unit 23 body. Thereby, the fixed claw 24 is strongly engaged with the concave portion of the concavo-convex portion 22, and as a result, the movable operation rod 4 can be positioned and fixed to the fixed operation rod 3.

  According to the valve handle operating tool 1 of the first modified example, the positioning means 20 is composed of the concave and convex portion 22 of the slide groove portion 21, the positioning operation portion 23, the spring 24, and the stopper 27. When sliding the 4 to the fixed operation rod 3 to expand and contract, the positioning operation portion 23 provided on the movable operation rod 4 makes it easy to position and fix the movable operation rod 4 at the time of slide adjustment of the movable operation rod 4 by one-touch operation. There are advantages that can be made. Moreover, since the uneven | corrugated | grooved part 22 provided in the slide groove part 21 orients mutually opposing unevenness | corrugations to the same direction, ie, has arrange | positioned in the same phase, fine adjustment of a slide width | variety is attained. As a result, there is an advantage that the opening / closing operation of the valve handle 2 can be performed exclusively, and in particular, the closing can be performed completely when the valve handle is closed. The stopper 27 may be formed of a permanent magnet or may be formed so as to magnetize a magnetic force. According to this, there is an advantage that the stopper 27 can be prevented from falling off and the stopper 27 can be prevented from being lost.

  Next, a second modification will be described. The second modification includes a positioning means 20 different from the first modification. As shown in FIGS. 8 and 9, the valve handle operating tool 1 according to the second modified example includes a positioning means 20, a slide groove 21 provided in the fixed operating rod 3 as in the first modified example, and the slide It is comprised by the uneven | corrugated | grooved part 22 formed in the groove part 21, and the positioning operation part 30 formed so that engagement / disengagement to this uneven | corrugated part 22 was possible. As shown in FIG. 8B, the positioning operation unit 30 includes a base member 32 attached to the movable operation rod 4 via a fixing tool 31 and a fixing claw attached to the base member 32 via a shaft bolt 33. 34 and a spring 35.

  For example, when the fixed claw 34 is provided with three claw portions 36 facing downward and is seated and assembled on the base member 32 by the shaft bolt 33, the claw portion 36 is attached to the base member 32 with the shaft bolt. Mounted with play in direction 33. In this case, the nail | claw part 36 is located in the state which adjoined the side across the base member 32 so that it may not interfere with the base member 32. A spring 35 is contracted between the shaft bolt 33 and the fixed claw 34, and is constantly urged so that the fixed claw 34 is seated on the base member 32 by the spring reaction force of the spring 35. Thus, when the positioning operation unit 30 is incorporated into the movable operating rod 4, the positioning means 20 shown in FIGS. 9A and 9C is configured.

  The operation of the valve handle operating tool 1 according to the second modification will be described. In a state where the movable operation rod 4 is positioned and fixed with respect to the fixed operation rod 3, the positioning operation portion 30 is in the state shown in FIGS. 9C, 9D and 9E with respect to the slide groove portion 21. Positioned. That is, the fixed claw 34 is elastically attached to the base member 32 by the spring force of the spring 35, and the three claw portions 36 are engaged with the concave portions of the concave and convex portions 22. For this reason, since the movable operation rod 4 is positioned and fixed with respect to the fixed operation rod 3, the valve handle 2 can be opened and closed. When the movable operating rod 4 is slide adjusted, the fixed claw 34 is pinched against the spring force of the spring 35 and lifted upward along the shaft bolt 33 as shown in FIG. 9A. Then, the claw portion 36 comes out of the concave portion of the slide groove portion 21 as shown in FIG. 9B, and the restrained state of relative displacement of the movable operation rod 4 with respect to the fixed operation rod 3 is released. In this state, when the positioning operation unit 30 is moved along the slide groove portion 21, the movable operation rod 4 can be slid and adjusted along the slide groove portion 21. When the force to lift the fixed claw 34 is released after the adjustment to the predetermined slide amount is completed, the spring 35 that has been contracted until that time is extended by the restoring force, and the claw portion 36 of the fixed claw 34 that is seated on the base member 32. However, the spring force of the spring 35 fits into the concave portion of the concave and convex portion 22. Thereby, the movable operation rod 4 can be positioned and fixed with respect to the fixed operation rod 3.

  As described above, according to the second modified example, the sliding force of the movable operating rod 4 is adjusted by lifting the fixed claw 34 of the positioning operation unit 30 against the spring force of the spring 35 or releasing it to release the spring force. There is an advantage that can be done with a simple one-touch operation.

  In this case, the fixed claw 34 may be formed of a permanent magnet and may be magnetically attached to the base member 32. According to this, it has the advantage which can perform positioning operation more smoothly and can prevent the loss of the fixed nail | claw 34. FIG.

  Next, a third modification will be described. As shown in FIG. 10, the valve handle operating tool 1 according to the third modification has a basic configuration substantially the same as that of the above embodiment. A screw portion 40 is provided on the outer periphery extending from the substantially central portion of the operation rod portion 5 of the fixed operation rod 3 toward the rear end portion. A cylindrical grip member 41 is detachably attached to the operation lever 5. A screw portion 42 that is screwed into the screw portion 40 is formed on the inner periphery of the grip member 41, and the grip member 41 can be screwed into the screw portion 40 of the operating rod portion 5.

  According to the third embodiment, the length of the operation lever portion 5 can be freely adjusted by rotating the grip member 41 in the direction of the arrow to adjust the screwing amount. For this reason, the length of the power point P1 and the fulcrum P3 can be adjusted. Therefore, in the valve handle operating tool 1 according to the third embodiment, the expansion / contraction adjustment of the operation lever part 5 can be freely performed. Therefore, when the large valve handle having a large diameter is opened and closed, the grip member 41 is attached to the operation lever part 5. By loading, the force acting on the valve handle increases, and opening and closing can be easily performed.

  In addition, although the valve handle operating tool 1 of the third example is applied to one having substantially the same structure as that of the embodiment, it can also be applied to the valve handle operating tool 1 of the first modified example and the second modified example. Needless to say.

  As mentioned above, although the present invention has been described in detail by the above embodiment and the first to third modifications, the specific configuration is not limited to these, and design changes and the like within the scope not departing from the gist of the present invention are possible. Even if it exists, it is included in the scope of the present invention.

  For example, although the T-shaped extending portion 15 is provided on the movable leg 13 of the valve handle operating tool 1, a configuration in which this is not provided may be employed.

  INDUSTRIAL APPLICABILITY The present invention can be used in a handle type handle for opening and closing a manual valve, that is, a piping system in which a valve handle is installed in an industrial field having plant equipment.

1A is an exploded front view of a valve handle operating tool, FIG. 2B is a side view of a fixed operating rod as viewed from the direction A, and FIG. The side view which looked at the operating rod from the B direction of (a), (d) is a top view of (a), (e) is a bottom view of (a). It is explanatory drawing explaining operation | movement of this valve handle operating tool. It is the top view which showed the state which opens and closes a valve handle using this valve handle operating tool. It is explanatory drawing explaining that this invention is mechanically advantageous compared with a conventional apparatus. It is a top view of the valve handle explaining the kind of valve handle. According to the first modification of the above embodiment, (a) is a plan view showing a state in which the valve handle operating tool is disassembled, and (b) is a plan view of a positioning operation portion shown by enlarging an arrow C in (a). FIG. 4C is a plan view illustrating a state in which the spring is accommodated in the positioning operation portion, and FIG. 4D is a side view of FIG. It is explanatory drawing explaining operation | movement of a 1st modification, (a) is a top view which shows the state which adjusted the valve handle operation tool short, (b) is a top view which shows the state which adjusted the valve handle operation tool long, (C) is a top view which shows the state in which a movable operating rod is positioned by the positioning operation part, (d) is the fracture | rupture figure which showed the internal state of the positioning operation part. FIG. 7A is a plan view showing an exploded valve handle operating tool, and FIG. 5B is an external view showing an exploded positioning operation unit according to a second modification of the embodiment. According to the second modification, (a) is an external view of a principal part showing a state in which slide adjustment is possible, (b) is a cross-sectional view taken along line EE of (a), and (c) is a state where positioning is fixed. The principal part external view shown, (d) is sectional drawing in the FF line of (c), (e) is the top view which showed the state which looked at (c) from the top with the skeleton figure. In relation to the third modified example of the above embodiment, (a) is an exploded view showing the structure of the third modified example, and (b) and (c) are front views for explaining the operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve handle operation tool 2 Valve handle 3 Fixed operation rod 4 Movable operation rod 5 Operation rod portion 6 Hollow portion 7 Fixed leg 8 Screw hole 9 Fastening tool 10 Front end surface 11 Non-slip member 12 Slide portion 13 Movable leg 14 Slide groove portion 15 Extension Residual portion 16 Non-slip member 20 Positioning means 21 Slide groove portion 22 Uneven portion 23 Positioning operation portion 24 Fixing portion 25 Spring 27 Stopper 30 Positioning operation portion 31 Fixing tool 32 Base member 33 Shaft bolt 34 Fixing claw 35 Spring 36 Claw portion 40 Screw portion 41 Grip member

Claims (6)

  A fixed operation rod having a fixed leg that can be bent at a substantially right angle to the front end and abutted against the valve handle, and is slidably stored in a hollow portion formed in the fixed operation rod, and at a substantially right angle at the front end. A movable operating rod having a movable leg that can be bent and abutted against the valve handle, and a slide position of the movable operating rod relative to the fixed operating rod is fixed between the movable operating rod and the fixed operating rod. Positioning means, and when the movable operating rod is expanded and contracted in the hollow portion of the fixed operating rod and adjusted by holding the valve handle between the fixed leg and the movable leg, A valve handle operating tool for restraining relative displacement of the movable operating rod with respect to the fixed operating rod.   The positioning means includes: a fastener screwed to the fixed operation rod; and a slide groove portion provided in the movable operation rod and formed in a slide direction in which the fastener can be engaged. Item 1. A valve handle operating tool according to Item 1. The positioning means is provided along the axial direction of the fixed operating rod, and has a slide groove portion in which wavy irregularities are arranged to face each other, and the irregularities formed on the movable operating rod and formed on the left and right sides of the slide groove portion. A spring member that expands and contracts in a direction substantially perpendicular to the sliding direction by force, and a stopper that engages with the spring member so as to position the spring member and maintain the engagement between the concave and convex portions. When the positioning operation is fixed, the spring member engages with the irregularities. However, when the movable operation rod is slidably adjusted with respect to the fixed operation rod, the spring member expands and contracts according to the irregularities by its own spring force. 2. The valve handle operating tool according to claim 1, wherein the movable operating rod is allowed to slide on the fixed operating rod while being elastically deformed. The positioning means is provided along the axial direction of the fixed operation rod, and a slide groove portion in which wavy irregularities are arranged to face each other, a fixed claw provided on the movable operation rod and detachably formed on the irregularities, The movable claw is provided between the fixed claw and the movable operation rod, and comprises a spring member that urges the fixed claw with a spring force in a direction that always engages the concave and convex portions. When the slide adjustment is performed, the movable operation rod can be slid onto the fixed operation rod in a state where the fixed claw is released above the slide groove portion against the spring force of the spring member. The valve handle operating tool according to claim 1. The valve handle operating tool according to any one of claims 1 to 4, wherein a grip member that allows the length of the fixed operating rod to be extended is detachably provided on the fixed operating rod.   An anti-slip member is provided on the fixed leg of the fixed operating rod and the movable leg of the movable operating rod, and the movable leg of the movable operating rod is T-shaped substantially orthogonal to the axis of the movable operating rod. The valve handle operating tool according to any one of claims 1 to 5, wherein an extending portion is formed to extend to the valve handle.

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