JP2015075168A - Handle for manual opening/closing valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle for a manual opening/closing valve capable of generating large rotational torque on a handle itself.SOLUTION: A handle for a manual opening/closing valve includes a hub portion 21 applied as a rotating shaft, a ring portion 22 disposed coaxially with the hub portion 21, and a plurality of spoke portions 23 connecting the hub portion 21 and the ring portion 22. The handle for the manual opening/closing valve further includes a lever portion 24 capable of changing an attitude between an inward attitude directing to the hub portion 21 from a prescribed part of the ring portion 22, and an outward attitude directing to the direction opposite to the hub portion 21 from the prescribed part of the ring portion 22. The lever portion 24 is projected from a supporting portion 25 journaled on the prescribed part of the ring portion 22.

Description

  The present invention relates to a handle for a manual open / close valve provided in a valve for adjusting a flow rate of a fluid flowing in a pipe body or stopping the flow.

  For example, in a power plant, a valve is connected to a tube for flowing water or the like. This valve is connected to a tubular body to form a deformed cylindrical body, a valve body that is housed in the body and opens and closes the flow path, a valve body is connected to the inner end, and an outer end A shaft-like stem having a portion protruding outside the body, and a handle for a manual on-off valve (hereinafter, mainly referred to as “handle”) connected to the stem are provided.

  The handle includes a hub portion fixed to the outer end portion of the stem, an annular ring portion arranged coaxially with the hub portion, and a plurality of spoke portions connecting the hub portion and the ring portion. Yes. The spoke portions are arranged radially between the hub portion and the ring portion. Then, when the operator manually rotates the ring portion of the handle in the circumferential direction, the rotational force is transmitted from the spoke portion to the stem, and when the stem rotates, the valve body rotates and the valve opens and closes.

  However, for example, if a large pressure is applied to the valve body or the stem is fixed to the body (hereinafter, described as “a large load is applied to the valve”), the ring portion can be manually rotated. There may not be. In such a case, an opening / closing operation tool called a Wilky is used.

  The opening / closing operation tool includes a rod-shaped handle portion, a first hook portion bent from the tip portion of the handle portion, and a first hook portion protruding in the same direction as the first hook portion in the vicinity of the tip portion of the handle portion. 2 latching portions. Therefore, the opening / closing operation tool is formed in an F shape.

  This opening / closing operation tool is used, for example, by hooking the first hooking portion to the intersection of the ring portion and the spoke portion of the handle and hooking the second hooking portion to the outside of the ring. Therefore, since the handle portion of the opening / closing operation tool extends in the radial direction from the ring portion of the handle, the opening / closing operation tool is used like a lever.

  In other words, even if a large load is applied to the valve, the operator pushes or pulls the base end portion of the handle portion of the opening / closing operation tool to generate a large rotational torque on the hub portion or the stem. The valve can be opened and closed.

  In detail, when the tool for opening / closing operation is not used, the hub part or stem generates only the rotational torque for the length of the spoke part, but when using the tool for opening / closing operation, the hub part or stem Rotational torque is generated by a length obtained by adding the length of the spoke portion and the length from the base end portion of the handle portion of the opening / closing operation tool to the second hooking portion. Therefore, even if the operator pushes the handle part of the opening / closing tool lightly or pulls it, the handle can be turned to open and close the valve.

  However, since valves of various sizes are used according to the inner diameter of the tube, etc., there are various types of handles (for example, from a small one having a diameter of about 9 cm to a large one having a diameter of about 62 cm). There are various types, but they are classified into three types). Accordingly, the opening / closing operation tool is also provided in three sizes, for example, small, medium, and large, according to the size of the handle, and each is stored in a storage location. Then, an opening / closing operation tool is selected according to the size of the handle to be opened / closed.

  However, the size of the handle provided on the valve for opening and closing is determined when the worker arrives at the work site. Therefore, the operator carries all size opening / closing operation tools. However, carrying all the opening / closing operation tools is a heavy labor for the operator. Alternatively, the operator carries a certain opening / closing operation tool and returns another opening / closing operation tool to the storage location whenever necessary. However, such a setup takes time and reduces work efficiency.

  Thus, various open / close operation tools that can open and close the valve regardless of the size of the handle are provided (see, for example, Patent Document 1). The valve handle operating tool (open / close operating tool) described in Patent Document 1 includes a fixed operating rod and a movable operating rod.

  The fixed operating rod has an operating rod portion having a hollow portion, and a fixed leg (second latching portion) obtained by bending the distal end portion of the operating rod portion. The movable operating rod has a slide portion inserted into the hollow portion of the fixed operating rod, and a movable leg (first latching portion) obtained by bending the tip portion of the slide portion.

  In this valve handle operating tool, the sliding part of the movable operation rod slides in the hollow portion of the fixed operation rod, so that the movable leg of the movable operation rod and the fixed operation rod can be adjusted according to the size of the valve handle. The distance from the fixed leg can be changed. Therefore, even if the size of the valve varies, the operator can carry one valve handle operating tool to the site and open and close the valve.

JP 2009-6403 A

  The tool for manipulating the valve handle described in Patent Document 1 or the like can be used for a handle having a small size (for example, a diameter of about 9 cm), and the distance between the ring portion having a small outer diameter of the movable leg and the hub portion. (It is about 4 cm at the maximum). In the valve handle operating tool having such a thin movable leg, a handle having a large size (for example, a diameter of 62 cm) cannot be hooked accurately, so that the handle cannot be reliably turned.

  Therefore, an object of the present invention is to provide a handle for a manual on-off valve that can generate a large rotational torque in the handle itself.

  A handle for a manual on-off valve according to the present invention includes a hub portion serving as a rotation shaft, a ring portion disposed coaxially with the hub portion, and a plurality of spoke portions connecting the hub portion and the ring portion. A handle for a manual on-off valve having an inward orientation directed from a predetermined part of the ring part toward the hub part, and in a direction opposite to the hub part from the predetermined part of the ring part. It is further characterized by further comprising a lever portion that can be changed to an outward posture that is directed.

  According to the handle for the manual open / close valve, when a small load is applied to the valve and the hub part can be rotated by manually applying a circumferential rotational force to the ring part, the lever part is attached to the hub part. By adopting a facing inward posture, the lever portion can be prevented from interfering with the valve opening / closing operation.

  Also, if the hub is unable to rotate even if a heavy load is applied to the valve and the circumferential rotation force is manually applied to the ring part, the lever part is changed from an inward position to an outward position. To do. When the operator pushes or pulls the lever portion in the outward posture, a large rotational torque is generated in the hub portion due to the sum of the lever portion length and the spoke portion length. Can be rotated.

  Here, as an aspect of the handle for the manual on-off valve according to the present invention, the handle further includes a support portion pivotally supported on a predetermined portion of the ring portion, and the lever portion protrudes from the support portion, It is preferable that the rotation axis is half-rotatable.

  According to this handle for a manual on-off valve, the lever part makes a half rotation about the support part as a rotation axis, so that the inward attitude toward the hub part and the outward direction protruding from the ring part in the opposite direction to the hub part The posture can be changed very easily to the posture. The support part is pivotally supported by the ring part so as not to move in the circumferential direction of the ring part.

  Further, as another aspect of the handle for the manual on-off valve according to the present invention, the handle further includes a bridging portion connected to the ring portion and the hub portion, and the lever portion slides along the bridging portion. It may be possible.

  According to this handle for the manual on-off valve, the lever portion is in an inward posture in a state of being overlapped with the bridge portion, and the lever portion slides outward along the bridge portion and protrudes from the ring portion. As a result, the posture becomes outward.

  In this case, the bridging part may also serve as the spoke part. Since the spoke part connects the hub part and the ring part, the bridging part connected to the ring part and the hub part can be used as the spoke part.

  As still another aspect of the handle for the manual on-off valve according to the present invention, the lever portion includes a cylindrical body and a core body, and the cylindrical body is pulled out from a state in which the core body is externally fitted. The core body may be slidable to a state, or the core body may be slidable to a state protruding from the state of being inserted into the cylindrical body.

  According to the handle for the manual on-off valve, the lever portion includes the cylinder body and the core body, and in the state where the cylinder body is fitted on the core body or the core body is inserted into the cylinder body, the lever portion is The lever portion can be extended in a short state in which the cylinder is pulled out of the core or in a state where the core protrudes from the cylinder.

  As still another aspect of the handle for the manual on-off valve according to the present invention, the lever portion includes a plurality of stick-shaped members and a connecting member that connects the plurality of stick-shaped members. The plurality of stick-shaped members may be connected so that the posture can be changed between a state in which the plurality of stick-shaped members are overlapped and a state in which the stick-shaped members are aligned and extended in series.

  According to this handle for the manual on-off valve, in a state where a plurality of stick-shaped members are overlapped, the lever portion projects in the radial direction from the ring portion with the length of one stick-shaped member, and the stick-shaped member portion In a state in which are stretched in series, the lever portion protrudes in the radial direction from the ring portion with a length of one or more stick-like members. Since the plurality of stick-like members are connected by the connecting member, the posture can be easily changed between the overlapping state and the extended state.

  As still another aspect of the handle for the manual on-off valve according to the present invention, a plurality of the lever portions may be provided. According to the handle for the manual on-off valve, the lever portion protrudes in a plurality of directions, so that the lever portion can be pushed or pulled with both hands.

  According to the present invention, it is possible to provide a handle for a manual on-off valve that can generate a large rotational torque in the handle itself.

FIG. 1 shows a first embodiment of a handle for a manual on-off valve according to the present invention, wherein (a), (b), and (c) are schematic perspective views showing different states. FIG. 2 shows a modified example of the first embodiment of the handle for the manual on-off valve according to the present invention, wherein (a), (b) and (c) are schematic perspective views showing different states. . FIG. 3 is a schematic perspective view showing a second embodiment of the handle for the manual on-off valve according to the present invention, wherein (a) and (b) are different from each other. FIG. 4 is a second embodiment of the handle for the manual on-off valve according to the present invention, and (a) and (b) are enlarged plan views of the main part showing different states. FIG. 5 is a modified example of the second embodiment of the handle for the manual on-off valve according to the present invention, wherein (a), (b), and (c) are enlarged plan views of main parts showing different states, respectively. It is.

[First Embodiment]
A first embodiment of a handle for a manual on-off valve according to the present invention will be described with reference to FIG. As described in the background art, the handle for the manual open / close valve (hereinafter, mainly referred to as “handle”) 2 is provided in a valve (not shown) as a whole.

  The valve has a deformed cylindrical body that forms a flow path, a valve body that is housed in the body and opens and closes the flow path, a valve body is connected to the inner end, and the outer end protrudes out of the body. A shaft-shaped stem 1 and a handle 2 connected to the stem 1 are provided. The illustrated handle 2 is in a horizontal posture, but may be in a vertical posture or an inclined posture. Here, a case where the handle 2 is in a horizontal posture will be described.

  The handle 2 connects the flat cylindrical hub portion 21 connected to the stem 1, the annular ring portion 22 disposed coaxially with the hub portion 21, and the hub portion 21 and the ring portion 22. A plurality of (four in the drawing) spoke portions 23 are provided. The spoke portions 23 are arranged radially (in the drawing, a cross shape).

  A bolt portion 11 is provided at the distal end portion of the stem 1. A through hole (not shown) is formed in the center of the hub portion 21. The bolt portion 11 penetrates the through hole of the hub portion 21, the tip end portion of the bolt portion 11 protrudes from the end surface (upper surface in the drawing) of the hub portion 21, and the nut 12 is fastened, whereby the hub portion 21 is attached to the stem 1. It is fixed.

  The handle 2 is further characterized by further comprising a lever portion 24 that can change direction at a predetermined portion of the ring portion 22. The handle 2 of the first embodiment further includes a support portion 25 that fixes the lever portion 24 in a protruding state. The support portion 25 is pivotally supported at a predetermined portion of the ring portion 22 so as not to move in the circumferential direction of the ring portion 22. The predetermined portion of the ring portion 22 that pivotally supports the support portion 25 is not limited to the middle of the portion where the adjacent spoke portions 23 are connected as shown in the figure, and is a position adjacent to the portion where the spoke portions 23 are connected. Also good.

  And the support part 25 is formed in the shape of a straight cylinder instead of the circular arc cylinder in planar view. Therefore, the ring portion 22 at a portion that pivotally supports the support portion 25 is formed linearly in a plan view.

  By adopting such a shape, the lever portion 24 extends in the radial direction from the support portion 25 and has an inward posture directed toward the hub portion 21 with the support portion 25 as a rotation axis, and the hub portion 21. The posture can be changed to an outward posture directed in the opposite direction.

  The lever portion 24 has such a length that the distal end surface does not contact the side surface of the hub portion 21 when the lever portion 24 is in the inward posture. The lever portion 24 having such a length can be set in a horizontal posture because the tip portion does not hit the hub portion 21 in the inward posture. A stopper (not shown) for supporting the lever portion 24 is provided on at least one of the side surfaces of the ring portion 22 and the hub portion 21 so that the inward lever portion 24 can maintain a horizontal posture. .

  However, the distal end portion of the inward lever portion 24 may contact the distal end portion of the nut 12 or the bolt portion 11 provided on the stem 1 or the end surface of the hub portion 21. In this case, the inwardly directed lever portion 24 is slightly inclined.

  The ring portion 22 has a stopper (not shown) for supporting the lever portion 24 in the outward posture so that the lever portion 24 in the outward posture maintains a horizontal posture or a substantially horizontal posture. Is provided.

  The lever portion 24 includes a cylindrical body 241 and a core body 242. A cylindrical body 241 externally fits the core body 242, and a base end portion of the core body 242 is fixed to the support portion 25. The cylindrical body 241 is slidable in a state of being pulled out in a direction away from the support portion 25. The lever part 24 becomes longer than the case where the cylinder body 241 externally fits the core body 242 because the cylinder body 241 is pulled out. In addition, the cylinder body 241 and the core body 242 are provided with a lock mechanism (not shown) so that the cylinder body 241 is pulled out only when necessary.

  The handle 2 in the first embodiment is configured as described above. Next, a method of using the handle 2 will be described. In the normal state, the handle 2 has a lever portion 24 in an inward posture as shown in FIG. Since the lever portion 24 does not protrude outward, it is possible to prevent the operator's hand or arm from inadvertently hitting the lever portion 24.

  That is, when a small load is applied to the valve, the operator manually opens and closes the valve by rotating the ring portion 22 in the circumferential direction. At this time, since the lever portion 24 does not protrude from the ring portion 22, the lever portion 24 does not interfere with the valve opening / closing operation.

  In addition, when a small load is applied to the valve, if the lever portion 24 is set to the outward posture and the operator pushes or pulls the lever portion 24, an excessively large rotational torque is generated in the stem 1, The valve body may turn too much and damage the valve body.

  When a large load is applied to the valve and the ring portion 22 cannot be manually rotated, the lever portion 24 is set to the outward posture as shown in FIG. The lever portion 24 is in a state in which the cylindrical body 241 completely fits the core body 242 and is not separated from the support portion 25.

  Then, the operator pushes or pulls the lever portion 24. Then, a rotational torque is generated in the hub portion 21 or the stem 1 by the length obtained by adding the length of the lever portion 24 and the length of the spoke portion 23 where the cylindrical body 241 is fitted around the core body 242. A valve under load can be opened and closed. In this case, if the cylindrical body 241 is pulled out, separated from the support portion 25, and the lever portion 24 is lengthened, too much rotational torque is generated in the stem 1, and the valve body may be damaged.

  Even if a larger load is applied to the valve and the lever portion 24 (the state shown in FIG. 1B) in which the cylinder 241 is fitted around the core 242 is pushed or pulled, When opening and closing cannot be performed, as shown in FIG. 1C, the cylinder 241 is pulled out and the lever portion 24 is extended so that the cylinder 241 is separated from the support portion 25.

  When the cylinder 241 is locked by the lock mechanism, the lock is released and the cylinder 241 is pulled out. Further, since the cylindrical body 241 has the core body 242 externally fitted, it is easy for the operator to grasp and pull out the cylindrical body 241.

  Therefore, even if a larger load is applied to the valve, the length of the extended lever portion 24 and the length of the spoke portion 23 are added by pushing or pulling the cylinder 241 of the lever portion 24. Since a large rotational torque corresponding to the length is generated in the stem 1, the valve can be opened and closed.

  When a large rotational torque is generated, a large load is applied to the connecting portion between the cylindrical body 241 and the core body 242 and the connecting portion between the core body 242 and the support portion 25. Therefore, it goes without saying that the connecting portion between the cylindrical body 241 and the core body 242 and the connecting portion between the core body 242 and the support portion 25 have rigidity capable of withstanding this large load.

  When the opening / closing operation of the valve is completed, the lever portion 24 is returned to the inward posture as shown in FIG.

  In the first embodiment, the lever portion 24 is configured such that the cylindrical body 241 that fits the core body 242 is pulled out. However, the lever portion 24 may be slidable so that the cylindrical body 241 is fixed to the support portion 25, the core body 242 is inserted into the cylindrical body 241, and the core body 242 protrudes from the cylindrical body 241. In this case, the core body 242 is preferably provided with a knob so that the core body 242 does not enter the cylinder body 241 and the core body 242 can be easily protruded from the cylinder body 241.

  Next, a modification of the first embodiment according to the present invention will be described with reference to FIG. The handle 2 according to this modification also includes a support portion 25 that is pivotally supported by a predetermined portion of the ring portion 22 and a lever portion 24 that protrudes from the support portion 25. However, the lever portion 24 includes a plurality of stick-like members 243a and 243b (two are shown in the drawing and will be described as two hereinafter) and a connection for connecting the two stick-like members 243a and 243b. Member 244.

  The connecting member 244 is configured by a pin that connects one end of one stick-like member 243a and one end of the other stick-like member 243b, a hinge (not shown), or the like. In any case, the two stick-like members 243a and 243b can be changed in posture between an overlapped state and an extended state in which they are arranged in series.

  However, when one stick-like member 243a is overlapped with the other stick-like member 243b and is rotated in a horizontal posture to change to a state in which the stick-like member 243a is aligned and stretched in series, it is prevented from rotating too much. A stopper (not shown) is provided on the stick-like member.

  Also in the handle 2 according to such a modified example, when a small load is applied to the valve, as shown in FIG. 2 (a), the operator holds the ring portion 22 with the lever portion 24 facing inward. Open and close the valve by turning in the circumferential direction. When a large load is applied to the valve, the lever portion 24 is set to the outward posture as shown in FIG. However, the two stick-like members 243a and 243b are overlapped so that the rotational torque is generated by the length obtained by adding the length of the one stick-like member 243a and 243b and the length of the spoke portion 23. .

  When a larger load is applied to the valve, as shown in FIG. 2 (c), the lever portion 24 in the outward posture has two stick-like members 243a and 243b arranged in series. The stretched state is set so that the rotational torque is generated by the length obtained by adding the length of less than two stick-like members 243a and 243b and the length of the spoke portion 23. When the valve opening / closing operation is completed, the lever portion 24 is set in an inward posture as shown in FIG.

  In addition, although said support part 25 was formed in the cylinder shape, you may form it in a ring shape. In this case, a groove for fitting the ring-shaped support portion 25 is formed in the ring portion 22. The lever portion 24 may have a length approximately equal to the diameter of the ring portion 22 and may be bridged over the opposite ring portion 22 in an inward posture.

[Second Embodiment]
A second embodiment of the handle 2 for a manual on-off valve according to the present invention will be described with reference to FIGS. However, portions corresponding to the same portions as those described in the first embodiment will be described with the same reference numerals.

  The handle 2 in the second embodiment includes a bridging portion 26 connected to the ring portion 22 and the hub portion 21. The bridging portion 26 may be a cylinder, an elliptic cylinder, or a square tube. A lever portion 24 is inserted into the bridging portion 26 so as to be retractable.

  And the lever part 24 is not pulled out completely from the bridge part 26, and the securing part for preventing the core body 242 from being completely extracted from the inside of the cylindrical bridge part 26 is provided. For example, as shown in FIG. 4, the retaining portion may be formed by a tapered surface. That is, the retaining portion is formed such that the inner diameter of the ring portion side end portion 26a of the bridging portion 26 is gradually reduced and the hub portion side end portion 24a of the lever portion 24 is gradually increased in diameter.

  Therefore, the inner diameter of the cylindrical bridging portion 26 is the same as or larger than the outer diameter of the hub portion side end portion 24a of the lever portion 24 except for the ring side end portion 26a. By doing so, when the lever portion 24 is pulled out from the cylindrical body 241, the hub portion side end portion 24a of the lever portion 24 whose diameter has been increased hits the ring side end portion 26a of the bridge portion 26 whose diameter has been reduced. The lever portion 24 can be prevented from being completely pulled out from the bridge portion 26.

  Alternatively, although not shown, the retaining portion is provided with a flange portion projecting inwardly at the ring portion side end portion 26a of the cylindrical bridging portion 26, and projecting outwardly at the hub portion side end portion 24a of the lever portion 24. A flange portion may be provided. In this case, the inner diameter of the cylindrical bridging portion 26 is the same as or larger than the outer diameter of the flange portion of the lever portion 24. By doing so, when the lever portion 24 is pulled out from the cylinder 241, the lever portions 24 can be prevented from being completely pulled out from the cylinder 241 by hitting both flange portions.

  Alternatively, when the cylindrical body 241 is an elliptic cylinder or square cylinder (not shown) and the lever portion 24 is an elliptical shaft member or prism, the lever portion 24 does not rotate in the circumferential direction. When the lever portion 24 is pulled out from the cylindrical body 241, it is assumed that protrusions (not shown) are provided on the ring-side end portion of the bridge portion 26 and the hub-side end portion of the lever portion 24. The lever portions 24 can be prevented from being completely pulled out from the cylindrical body 241 by the contact of both the projecting portions.

  In any case, the bridging portion 26 also serves as the spoke portion 23 as shown in FIG. However, the cylindrical body 241 may be disposed between the adjacent spoke portions 23 of the spoke portions 23 provided in a cross shape.

  In addition, a through hole (not numbered) through which the lever portion 24 moves out is formed on the outer peripheral surface of the ring portion 22 intersecting with the bridging portion 26. This through hole is opened and closed by the shutter 27. In other words, the shutter portion 27 blocks the through hole so that the lever portion 24 does not protrude from the bridging portion 26. In addition, the shutter portion 27 exposes the through hole, so that the lever portion 24 can protrude from the bridging portion 26. A knob portion (not shown) for pulling out the lever portion 24 housed in the bridging portion 26 is provided on the distal end surface of the lever portion 24.

  The handle 2 in the second embodiment is configured as described above. Next, a method for using the handle 2 will be described.

  As shown in FIG. 3A, the handle 2 is in an inward posture with the lever portion 24 housed in the bridging portion 26 in a normal state. The lever portion 24 does not protrude from the bridge portion 26 when the shutter 27 is closed.

  When a small load is applied to the valve, the operator manually opens and closes the valve by turning the ring portion 22 in the circumferential direction. At this time, since the lever portion 24 is in an inward posture and does not protrude from the ring portion 22, the lever portion 24 does not interfere with the operation.

  If a large load is applied to the valve and the operator cannot manually turn the ring portion 22, the lever portion 24 is pulled out from the bridging portion 26 as shown in FIG. To do. Then, the operator pushes or pulls the lever portion 24. Then, a rotational torque is generated in the hub portion 21 or the stem 1 by a length obtained by adding the length of the lever portion 24 and the length of the spoke portion 23, and the valve can be opened and closed.

  Next, a modification of the second embodiment according to the present invention will be described with reference to FIG. The lever portion 24 provided in the handle 2 according to this modification includes a cylinder body 241 and a core body 242 accommodated in the cylinder body 241. Therefore, in this lever portion 24, a knob (not shown) for pulling out the cylinder 241 inserted in the bridging portion 26 and a knob for pulling out the core 242 inserted in the cylinder 241. A portion (not shown) is provided on the outer end surface. The cylindrical body 241 and the core body 242 are also provided with a retaining portion as shown in FIG.

  In the handle 2 according to this modification, when a small load is applied to the valve, the operator turns the ring portion 22 in the circumferential direction as shown in FIG. Open and close.

  The handle 2 can be changed to two stages of the handle 2 in the outward posture. That is, when a large load is applied to the valve, as shown in FIG. 5B, the core body 242 is used as the lever portion 24 in a state of being housed in the cylinder body 241.

  When a greater load is applied to the valve, it is used as the lever portion 24 in a state where the core body 242 is pulled out from the cylindrical body 241 as shown in FIG. In the lever portion 24 in which the core body 242 is pulled out from the cylindrical body 241, a larger rotational torque can be generated in the hub portion 21 or the stem 1 than in the lever portion 24 in which the core body 242 is accommodated in the cylindrical body 241.

  As a further different modification of the second embodiment, the bridging portion 26 is not a cylindrical body 241 but a band plate-like member, and the lever portion 24 slides along the band plate-like bridging portion 26. You may make it do. In this case, the guide portions protrude from both side edges of the band-plate-like bridge portion 26 so that the lever portion 24 is sandwiched between the guide portions.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the handle 2 in the above embodiment, only one lever portion 24 is provided. However, the two lever portions 24 may be provided so that the posture is outward in the opposite direction. In such a lever part 24, since the operator can hold the lever part with both hands, a larger rotational torque can be generated.

  Further, the lever portion 24 of the first embodiment can be extended by the cylindrical body 241 and the core body 242 and by the stick-like members 243a and 243b. However, also in the first embodiment, the lever portion 24 may be configured by only one member.

  In any embodiment, the operator can accurately open and close the valve without carrying the opening and closing tool, reducing labor of the work vehicle, damaging the valve body, and opening and closing operation. Accidents due to the tool being detached from the handle can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Stem 2 ... Handle 11 ... Bolt part 12 ... Nut 21 ... Hub part 22 ... Ring part 23 ... Spoke part 24 ... Lever part 241 ... Cylindrical body 242 ... Core body 243a ... Stick-like member 243b ... Stick-like member 25 ... Support Part 26 ... Bridge part 27 ... Shutter

Claims (7)

A handle for a manually operated on-off valve comprising a hub portion as a rotating shaft, a ring portion arranged coaxially with the hub portion, and a plurality of spoke portions connecting the hub portion and the ring portion. ,
A lever portion that can change its posture between an inward posture directed from the predetermined portion of the ring portion toward the hub portion and an outward posture directed from the predetermined portion of the ring portion in a direction opposite to the hub portion. A handle for a manual on-off valve, further comprising: A support portion that is pivotally supported by a predetermined portion of the ring portion;
The handle for a manual on-off valve according to claim 1, wherein the lever portion protrudes from the support portion and can be rotated halfway around the support portion as a rotation axis. A bridging part connected to the ring part and the hub part;
The handle for a manual on-off valve according to claim 1, wherein the lever portion is slidable along the bridging portion.   The handle for a manually operated on-off valve according to claim 3, wherein the bridging portion also serves as the spoke portion. The lever portion includes a cylindrical body and a core body,
The cylindrical body is slidable in a state of being pulled out from a state in which the core body is externally fitted, or slidable in a state of protruding from a state in which the core body is inserted into the cylindrical body. The handle for a manual on-off valve according to any one of claims 1 to 4. The lever portion includes a plurality of stick-shaped members and a connecting member that connects the plurality of stick-shaped members,
5. The connecting member according to any one of claims 1 to 4, wherein the plurality of stick-like members are connected so that the posture can be changed between a state in which the plurality of stick-like members are overlapped and a state in which the stick-like members are arranged in series and extended. A handle for a manual on-off valve according to claim 1.   The handle for a manual on-off valve according to any one of claims 1 to 6, wherein a plurality of the lever portions are provided.

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