JP2015183464A - Extension valve key for underground valve plug and the like, and fixture for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension valve key for enabling an opening/closing operation of an underground valve plug and the like to be performed with ease, and a fixture that enables the extension valve key to be easily attached to a valve cap of the underground valve plug and the like.SOLUTION: An extension valve key 10 has one longitudinal end provided with a fitting part 11 for being fitted to a valve cap 21, and has the other longitudinal end provided with a head 12 assuming a ball point shape. A fixture for attaching the extension valve key 10 to the valve cap 21 has one longitudinal end provided with a holding part for holding the head 12 by being fitted to the head 12 of the extension valve key 10.

Description

  The present invention relates to underground valves such as water supply valves, soft seal gate valves, water control valves, butterfly valves, ball valves, etc., which are provided in underground pipes such as water pipes and agricultural water pipes embedded in the ground. The present invention relates to a valve key to be attached to a valve cap on the shaft head of a stopper, and an attachment jig to be used when attaching the valve key.

  Water pipes and agricultural water pipes buried in the ground are provided with underground valve plugs such as gate valves and butterfly valves for the purpose of adjusting the flow rate. These underground valve plugs are installed at the bottom of a cylindrical protective box buried in the ground. To open and close the underground valve plugs from the ground surface manually, After opening, the valve cap at the shaft head of the underground valve plugs is rotated using an opening / closing operation tool such as a torque wrench or a T-shaped handle.

  On the other hand, in the case of underground valve plugs installed deep in the ground, it is difficult to rotate the valve cap directly with the opening / closing operation tool. In some cases, a valve key is attached to the valve cap of the shaft head in advance (for example, Patent Document 1). In this case, the valve cap of the shaft head of the underground valve plug is rotated by fitting the tip of the opening / closing operation tool to the head of the additional valve key and rotating it.

  However, when underground valve plugs (buried conduits) are installed on slopes, the valve caps are also inclined, so that the valve key is inclined with respect to the protective box. For example, if the head of the additional valve key is in contact with the inner surface of the protective box, it is difficult to fit the tip of the opening / closing operation tool, and the opening / closing operation of the underground valve plugs becomes difficult. In addition, even if the valve key is not initially tilted, the valve cap of the underground valve plug may tilt due to ground subsidence or liquefaction due to an earthquake, and as a result, the valve key may be tilted. Also in this case, it becomes difficult to fit the tip of the opening / closing operation tool to the head of the additional valve key, and opening / closing operation of the underground valve plugs becomes difficult.

  In addition, when the valve cap of the underground valve plugs is inclined with respect to the protective box, the operation itself of attaching the valve key by attaching to the valve cap becomes difficult.

Japanese Patent Laid-Open No. 11-50497

   The problem to be solved by the present invention is to provide an additional valve key for easily opening and closing the underground valve plugs, and easily attaching the key to the valve cap of the underground valve plugs. An object of the present invention is to provide a mounting jig that can be used.

  According to an aspect of the present invention, there is provided an additional valve key that is attached to a valve cap at a shaft head of underground valve plugs, and includes a fitting portion that fits into the valve cap at one end in the longitudinal direction. An additional valve key is provided with a ball point shaped head at the other end.

  In this way, by making the head of the additional valve key into a ball point shape, even if the additional valve key is inclined, the tip of the opening / closing operation tool can be added and fitted to the head of the valve key and rotated. It is possible to easily open and close the underground valve plugs.

  The extension valve key of the present invention is preferably provided with a reflective material on the upper end surface of its head. Even when the inside of the protective box is deep and dark, the reflective member improves the visibility of the head, and the tip of the opening / closing operation tool can be more easily fitted to the head.

  Further, the additional valve key of the present invention is attached to an intermediate portion between the fitting portion at one end and the head at the other end, and includes an anti-rest device that rotatably supports the additional valve key. It is preferable to do. When this anti-rest device is attached to the valve cap on the shaft head of the underground valve plug, the inner periphery of the protective box embedded in the ground is protected to protect the underground valve plug. By inscribed in a plurality of places on the surface, it is possible to stop the swing of the valve valve. This makes it easier to fit the tip of the opening / closing operation tool to the head of the additional valve key more easily. In addition, since the swing of the valve key is suppressed even during the opening / closing operation (rotation operation) by the opening / closing operation tool, stable opening / closing operation can be performed, and the biased force caused by the swing of the valve key during the opening / closing operation Is suppressed from being added to the valve cap of the underground valve plugs, and damage to the valve cap can be prevented.

  It is preferable that this steady rest can be attached to and detached from the intermediate portion of the valve valve key. By doing so, it is possible to appropriately select and mount a steady rest having an appropriate size and shape in accordance with the inner diameter of the protective box.

  According to another aspect of the present invention, there is provided a mounting jig for mounting the additional valve key of the present invention to a valve cap of an underground valve plug, which is extended to one end in the longitudinal direction and fitted to the head of the valve key. An attachment jig having a holding portion for holding the head is provided.

  By providing the holding portion at one end in the longitudinal direction in this way, the fitting portion at the other end of the valve valve key is connected to the valve cap of the underground valve plug while holding the head of the valve key by adding the holding portion. Can be easily attached to.

  In the mounting jig of the present invention, it is preferable that the holding portion is connected and fixed to the head portion by a one-touch method after being fitted to the head portion of the valve valve. As a specific configuration, the holding portion has a peripheral wall surrounding the head of the valve key that has been added and a holding groove on the inner periphery of the peripheral wall, and the holding groove is longer than the head of the valve key by adding the holding portion. When it is rotated in one direction around the axis of the direction center axis, it can be added and fitted to the outer periphery of the head of the valve key so as to be connected and fixed to the head.

  In this way, the holding part is connected and fixed to the head of the valve key by one-touch connection, so that the head of the additional valve key can be securely held and fixed, and the fitting part of the additional valve key is connected to the underground valve. The work of attaching to the valve cap of the stopper can be performed more easily.

  It is preferable that the holding portion includes an urging member that applies a force for maintaining the connected and fixed state. By doing so, it is possible to more securely hold and fix the head of one end of the valve key. When the holding portion is provided with the peripheral wall, the urging member is arranged on the upper side of the peripheral wall, and is configured to be added in the connected and fixed state to urge the head of the valve key downward. Can do.

  According to the add-on valve key of the present invention, even if the add-on valve key is inclined and attached to the protection box, the tip of the opening / closing operation tool can be added and fitted to the head of the valve key and rotated. The opening and closing operation of the underground valve plugs can be easily performed. In particular, in the event of an emergency such as a disaster or an earthquake, quick opening and closing operation of underground valve plugs is required. Can contribute to the prevention of disaster expansion.

  Further, according to the mounting jig of the present invention, the additional valve key can be easily mounted on the valve cap of the underground valve plug. Thereby, the efficiency of the maintenance management work of underground valve plugs can be achieved.

The 1st Example of the extension valve key of this invention is shown, (a) is a perspective view, (b) is a longitudinal cross-sectional view. It is a longitudinal cross-sectional view which shows the state which attached the extension valve key of FIG. 1 to the valve cap of the shaft head of underground valve plugs. It is explanatory drawing which shows the example of the form of the coupling | bonding with the head (ball point shape) of the extension valve key of FIG. 1, and the front-end | tip of an opening / closing operation tool. It is a partial cross section figure which shows 2nd Example of the extension valve key of this invention. It is a perspective view which shows an example of a steady rest. It is a perspective view which shows the use condition of the steady rest of FIG. The other example of a steady rest is shown, (a) is a top view which shows a use condition, (b) is an AA arrow directional view of (a). The Example of the attachment jig | tool of this invention is shown, (a) is a front view, (b) is a bottom view, (c) is a longitudinal cross-sectional view of a holding | maintenance part part. The operation of adding and holding the head of the valve key by the holding portion of the mounting jig is shown, (a) is a longitudinal sectional view showing a state in which the head is inserted into the holding portion, and (b) is B of (a). -B arrow figure, (c) is a longitudinal cross-sectional view which shows the state which rotated the holding | maintenance part 45 degrees and was connected and fixed to the head, (d) is CC arrow line view of (c). It is a longitudinal cross-sectional view which shows the use condition of the attachment jig of FIG.

  Embodiments of the present invention will be described below based on examples shown in the drawings.

  1A and 1B show a first embodiment of an additional valve key according to the present invention, in which FIG. 1A is a perspective view and FIG. 1B is a longitudinal sectional view. FIG. 2 is a longitudinal sectional view showing a state in which the additional valve key of FIG. 1 is attached to the valve cap of the shaft head of the underground valve plug.

  The extension valve key 10 shown in FIGS. 1 and 2 is provided with a box-shaped fitting portion 11 that fits into a valve cap 21 of a shaft head of the underground valve plugs 20 at one end (lower end) in the longitudinal direction, A ball-point shaped head 12 is provided at the other end (upper end) of the direction, and a reflecting material 13 is provided at the upper end surface of the head 12. The fitting part 11 and the head part 12 are connected via an intermediate part 14. The fitting portion 11, the head portion 12, and the intermediate portion 14 are manufactured, for example, as an integral casting of spheroidal graphite cast iron (FCD600).

  Here, reference numeral 30 in FIG. 2 is a protective box embedded in the ground to protect the underground valve plugs 20. The protective box 30 has a cylindrical shape, is installed vertically as usual, and has a bottom plate at the bottom. On the other hand, in FIG. 2, the underground valve plugs 20 are inclined with respect to the protective box 30.

  Since the extension valve key 10 is attached by fitting the fitting portion 11 to the valve cap 21, the direction of the longitudinal center axis of the extension valve key 10 is substantially the same as the direction of the longitudinal center axis of the valve cap 21. Match. Therefore, when the underground valve plugs 20 are installed to be inclined with respect to the protective box 30 and the valve cap 21 is inclined as shown in FIG. 2, the additional valve key 10 is also inclined.

  Therefore, in the present invention, the head 12 of the additional valve key 10 is formed into a ball point shape so that the tip of the opening / closing operation tool is fitted to the head 12 even if the additional valve key 10 is inclined and attached. Can be rotated. That is, as shown in FIG. 3, the tip 41 of the opening / closing operation tool 40 can be fitted into the ball point-shaped head 12 from an oblique direction, and the opening / closing operation tool 40 can be rotated in this state. As shown in FIG. 2, even if the extension valve key 10 is inclined and attached, the tip of the opening / closing operation tool can be fitted to the head 12 and rotated. According to this ball-point shaped head 12, it is possible to cope with an inclination of about 40 degrees at the maximum.

  Moreover, since the additional valve key 10 of the present embodiment is provided with the reflecting material 13 on the upper end surface of the head 12, the visibility of the head 12 is improved, and the tip of the opening / closing operation tool is more easily attached to the head 12. Can be fitted.

  FIG. 4 is a partial cross-sectional view showing a second embodiment of the additional valve key of the present invention. The extension valve key 10 of the second embodiment is obtained by lengthening the intermediate portion 14 in the extension valve key 10 of the first embodiment. The length of the intermediate portion 14 is appropriately set depending on the installation depth of the underground valve plugs. That is, the deeper the installation depth of the underground valve plugs, the longer the intermediate portion 14 is set, and the extension valve key 10 becomes longer.

  However, if the extension valve key 10 is elongated, “runout” is likely to occur when the valve key 10 is attached to the valve cap 21 as shown in FIG. As a countermeasure, it is effective to attach a steady rest to the valve valve key 10 to be added.

  FIG. 5 is a perspective view showing an example of a steady rest. The steady rest 50 shown in the figure is formed by bending a single steel strip (for example, a SUS304 steel strip), and is attached to the middle portion of the valve key 10 by attaching to the center portion. 51 is formed, and arm portions 52 that are continuously curved are formed on both sides of the mounting portion 51.

  FIG. 6 is a perspective view showing a use state of the steady rest 50 of FIG. As shown in the figure, the steady rest 50 is attached to the additional valve key 10 by supporting the additional valve key 10 in a rotatable manner by adding the mounting portion 51 and fitting it into the intermediate portion 14 of the valve key 10. . Note that “turnable” means that the additional valve key 10 can rotate in any direction around the axis of the longitudinal central axis. In use, the two arm portions 52 elastically abut against the inner peripheral surface of the protective box 30 and are in contact with each other, so that the swing of the valve key 10 can be stopped. Since the arm portion 52 is elastically deformable, it is possible to cope with a slight difference in the tilted state of the additional valve key 10 and the inner diameter of the protective box 30 with a kind of steady rest 50, but the length of the arm portion 52 If multiple types of sheaths with different shapes are prepared, the applicable range is further expanded.

  FIG. 7 shows another example of the steady rest, (a) is a plan view showing the use state, and (b) is a view taken along the line AA of (a). The steady rest 60 shown in the figure has a ring-shaped mounting portion 61 at the center, and the mounting portion 61 is fitted into the intermediate portion 14 of the valve key 10 to be mounted on the additional valve key 10 and added. The valve key 10 is rotatably supported.

  In the steady rest 60, three arm portions 62 are formed radially from the mounting portion 61. The arm portion 62 includes a fixed arm portion 62a fixed to the mounting portion 61 and a movable arm portion 62b attached to be slidable in the longitudinal direction of the fixed arm portion 62a. The movable arm portion 62b is fixed to the fixed arm portion 62a. The overall length can be adjusted by sliding in the longitudinal direction. After adjusting the length, the movable arm portion 62b is fixed to the fixed arm portion 62a by a fixing tool 63 such as a thumbscrew. In use, the tips of the movable arm portions 62b of the three arm portions 62 elastically abut against the inner peripheral surface of the protective box 30 and are in contact with each other, so that the valve key 10 can be prevented from swinging. Further, since the length of each arm portion 62 of the steady rest 60 can be adjusted, the length of each arm portion 62 can be adjusted even if the tilted state of the additional valve key 10 or the inner diameter of the protective box 30 changes. This can be done.

  Here, reference numeral 64 in FIG. 7A is a positioning pin for positioning (temporarily fixing) the tip of the movable arm portion 62b on the inner peripheral surface of the protection box 30. It is sufficient if the positioning pin 64 is provided at the tip of one movable arm 62b.

  In the steady rest 60, since it is necessary to operate the fixture 63 for adjusting the length of each arm 62, it is relatively large compared to the steady rest 50 in FIG. 5 from the viewpoint of securing the operation space. It is preferably used when a protective box 30 having a diameter is used.

  Next, the mounting jig of the present invention will be described.

  8A and 8B show an embodiment of the mounting jig of the present invention, in which FIG. 8A is a front view, FIG. 8B is a bottom view, and FIG. 8C is a longitudinal sectional view of a holding portion. The mounting jig 100 shown in the figure includes a shaft rod portion 110, an operation portion 120 attached to the upper end of the shaft rod portion 110, a lighting tool 130 attached in the middle of the shaft rod portion 110, and the shaft rod portion 110. The holding part 140 attached to the lower end of the.

  The shaft rod part 110 is formed to be extendable and contractible. In this embodiment, a telescope structure is adopted, and the ring screw 111 can be expanded and contracted by loosening or tightening the two ring screws 111.

  The operation unit 120 is for operating the shaft rod unit 110. For example, the operator grips and operates the shaft rod unit 110 when the shaft rod unit 110 is moved back and forth.

  The illuminator 130 is attached downward in the middle of the shaft rod portion 110, and particularly illuminates the vicinity of the holding portion 140.

  The holding part 140 holds the head 12 of the additional valve key 10 when the additional valve key 10 of the present invention shown in FIG. 1 or the like is attached to the valve cap of the underground valve plugs. It is attached to the lower end of the shaft rod part 110 via the via. The direction of the peristaltic movement is the left-right direction along the paper surface in FIG.

  As shown in FIGS. 8B and 8C, the holding portion 140 has a cylindrical shape having a square opening 141 at the lower end, and is surrounded by a peripheral wall 142 composed of four surfaces connected to each side of the opening 141. The head 12 of the additional valve key 10 is fitted into the holding space 143 to hold it. That is, the opening 141 is formed to be slightly larger than the outermost size of the head 12 of the valve key 10, and the head 12 passes through the opening 141 when matched to the direction of the head 12 in the direction of the opening 141. And fit into the holding space 143.

  Holding grooves 144 are formed on the inner surface (four surfaces) of the peripheral wall 141, respectively. Each holding groove 144 is formed so as to pass through a position biased to one side (diagonal portion) of each inner surface, and is formed so as to be symmetric with respect to the longitudinal center axis of the holding portion 140.

  A biasing member 145 is disposed above the holding space 143. The urging member 145 is urged downward by a coil spring 146 and is stopped by a stopper surface 147 at the upper end of each peripheral wall 142 (holding space 143) as shown in FIG. 8C in a state before use. Yes.

  Next, the operation and usage method of the mounting jig 100 will be described.

  FIG. 9 shows an operation of holding the head 12 of the valve key 10 by adding the holding part 140 of the mounting jig 100, and FIG. 9A is a longitudinal sectional view showing a state in which the head 12 is inserted into the holding part 140. , (B) is a BB arrow view of (a), (c) is a longitudinal sectional view showing a state in which the holding part 140 is rotated 45 ° and connected and fixed to the head 12, (d) is a view of (c). It is CC arrow line view.

  In order to hold the head 12 by the holding unit 140, the holding unit 140 is pushed down according to the direction of the head 12 in the direction of the opening 141 of the holding unit 140. Then, the head 12 passes through the opening 141 and fits into the holding space 143 (see FIG. 9B). At this time, as shown in FIG. 9A, the head 12 is fitted to the position where the head 12 pushes up the biasing member 145.

  In this state, the holding part 140 is rotated 45 degrees counterclockwise around the axis of the longitudinal central axis. If it does so, the outline (outer periphery) of the head 12 will fit in the holding groove 144 provided in the surrounding wall 142 of the holding | maintenance part 140, and the head 12 will be connected and fixed to the holding groove 144 (refer FIG.9 (d)). Thereafter, when the holding portion 140 is made free, as shown in FIG. 9C, the biasing member 145 hits the upper end surface of the head 12 and applies a force to push the head 12 downward. As a result, the head 12 is firmly connected and fixed to the holding groove 144. In other words, the urging member 145 applies a force that maintains the state in which the holding groove 144 and the head 12 are connected and fixed.

  Thus, the holding part 140 of this embodiment is connected and fixed to the head 12 by a one-touch method in which the holding part 140 is fitted to the head 12 and then rotated 45 degrees counterclockwise. Further, the connected and fixed state is also reliably maintained by the biasing member 145.

  Note that the one-touch connection fixing method is not limited to the method of this embodiment. For example, various methods used in joint structures can be used. Further, the holding portion 140 may be simply fitted and held on the head 12 without being firmly connected and fixed as in the present embodiment.

  When the holding portion 140 of the mounting jig 100 is added and the head 12 of the valve key 10 is held, the holding portion 140 is inserted into the protective box as shown in FIG. 10 and the fitting portion 11 of the adding valve key 10 is connected to the valve cap. The extension valve key 10 is attached to the valve cap 21 by fitting with the valve cap 21. Thereafter, the attachment jig 100 is removed from the valve valve key 10 by performing the reverse operation of the connection and fixing operation described in FIG. It should be noted that these connecting and fixing operations can be performed by holding the operation unit 120.

DESCRIPTION OF SYMBOLS 10 Extension valve key 11 Fitting part 12 Head 13 Reflector 14 Middle part 20 Underground valve plug 21 Valve cap 30 Protection box 40 Opening / closing operation tool 41 Tip of opening / closing operation tool 50 Stabilization tool 51 Mounting part 52 Arm part 60 Anti-rest device 61 Mounting portion 62 Arm portion 62a Fixed arm portion 62b Movable arm portion 63 Fixing tool 64 Positioning pin 100 Mounting jig 110 Axle rod portion 120 Operating portion 130 Illuminator 140 Holding portion 141 Opening 142 Peripheral wall 143 Holding space 144 Holding groove 145 Energizing member 146 Coil spring 147 Stopper surface 150 Support shaft

Claims (9)

  An additional valve key to be attached to the valve cap of the shaft head of underground valve plugs, comprising a fitting portion that fits into the valve cap at one end in the longitudinal direction, and a ball-point shaped head at the other end in the longitudinal direction With additional valve key.   The extension valve key according to claim 1, wherein a reflective material is provided on an upper end surface of the head.   It is attached to an intermediate part between the fitting part and the head part, and includes an anti-skid tool that rotatably supports an additional valve key, and the anti-sway tool attaches the extra valve key to an underground valve plug. 3. The device according to claim 1, wherein when being attached to the valve cap of the shaft head, a plurality of points are inscribed in an inner peripheral surface of a protective box embedded in the ground in order to protect the underground valve plugs. Additional valve key.   The extension valve key according to claim 3, wherein the steady rest is detachable from the intermediate portion.   An attachment jig for attaching the extension valve key according to any one of claims 1 to 4 to the valve cap, and holding the head by fitting the head to one end in a longitudinal direction. Mounting jig with a part.   The mounting jig according to claim 5, wherein the holding part is connected and fixed to the head by a one-touch method after being fitted to the head.   The holding portion includes a peripheral wall surrounding the head and a holding groove on an inner periphery of the peripheral wall, and the holding groove extends in one direction around the axis of the longitudinal central axis with respect to the head. The mounting jig according to claim 6, wherein the mounting jig fits on an outer periphery of the head and is connected and fixed to the head when rotated.   The mounting jig according to claim 6 or 7, wherein the holding portion includes an urging member that applies a force for maintaining the connection and fixing state.   The holding portion includes an urging member that applies a force for maintaining the connection and fixation state on the upper side of the peripheral wall, and the urging member attaches the head portion downward in the connection and fixation state. The mounting jig according to claim 7, wherein

Images