JP2006022893A - Manual operation device for fluid-pressure driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual operation device for a fluid-pressure driving device capable of preventing the interference of the rotating operation of a valve stem and the operation of the fluid pressure driving device. <P>SOLUTION: This manual operation device has a worm wheel rotatably mounted on the valve stem, a worm engaged with the worm wheel, and a handle connected through a decelerator. A hearth coupling having engagement teeth is mounted on the worm wheel, a transmission hearth coupling is integrally rotatably and slidably mounted on the valve stem in opposition to the hearth coupling, and its opposite face has engagement teeth engaged with the engagement teeth of the hearth coupling. The transmission hearth coupling has a pair of operating members horizontally movable from the external of the manual operating device and having inclined faces inclined to the horizontal direction for engaging and disengaging the engagement teeth of both couplings, thus the rotation by the manual operation is transmitted to the valve stem, and the valve can be opened and closed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is provided in a fluid pressure driving device that uses hydraulic pressure as a power source to operate a valve or uses a gas pressure such as air pressure, and enables manual operation instead of the fluid pressure driving device. This relates to a manual operation device.

  In a typical cylinder-type drive device as a fluid pressure drive device, a drive device as described in Patent Document 1 is given as an example in order to operate a valve of a pipeline. In such a drive device, the hydraulic pressure supplied from the gas / hydraulic pressure intensifier is supplied to the closed or open cylinder by the switching valve, and the reciprocating rod is converted to rotational operation by the scotch yoke, The valve is opened and closed.

  In such a drive device, an electric oil pump is provided to restore the gas pressure reduced by the opening / closing operation of the valve so that it is automatically operated by detecting the rod position of the pressure intensifier with a limit switch. It has become.

Further, such a cylinder type drive device is provided with a manual oil pump in case the electric oil pump cannot be used.
JP-A-8-54083

  In the cylinder type hydraulic drive unit as described above, it is considered that a mechanical manual operation device is additionally provided to enable the operation of the valve manually even if the two oil pumps cannot be used due to damage to the piping. Has been. As will be described in detail later, this manual operation device can be rotated within a rotation range of 90 degrees (substantially 96 degrees) prior to the operation of the valve. In order to enable automatic operation by the electric oil pump regardless of the manual operation device, the manual operation device is idled in a rotation range of 90 degrees.

  This is because in such a manual operation device, the cylinder-type drive device is reciprocating, whereas it is rotationally operated, so that it is necessary that the operations do not interfere with each other. Therefore, in order to connect this manual operation device to the stem of the valve, a mechanism for connecting only when the manual operation device is activated is necessary.

  In this manual operation device, a worm wheel is attached to a rotation transmission flange, the worm wheel and a worm for operating the worm wheel by an external operation are paired, and the worm is provided outside. Although rotation and power can be transmitted via the primary speed reducer, in general, a valve that can be operated only by the worm wheel, the worm, and the handle has a small diameter. Is provided with a primary reduction gear, and the worm and worm wheel are provided so as to function as a secondary reduction gear.

  A cylinder-type drive device provided with such a manual operation device has a rotation transmission flange that is fitted on a valve stem on one side and fitted on a scotch yoke that serves as a rotation mechanism of the cylinder drive device. The rotation transmission flange is provided with a worm wheel having an idling groove, and a fixed pin fixed to the rotation transmission flange is engaged with the idling groove of the worm wheel to rotate the rotation of the worm wheel. The valve stem can be rotated by being transmitted to the transmission flange by engagement of a fixing pin. Therefore, the opening and closing operation using the worm wheel is performed by rotating the idling groove of the worm wheel while pulling the fixing pin, so that the state is maintained after the operation and the valve stem is operated in the opposite direction. I can't let you. Therefore, it is necessary to always rotate the worm wheel and rotate the idling groove to the opposite side after the operation. Further, when the worm, the worm wheel, and the speed reducer are used, the total reduction ratio is large. Therefore, it is very laborious to rotate the idling groove to the opposite position, that is, 90 degrees. .

  Furthermore, every time the valve stem is operated to the open side or the closed side at any position of this manual operation device, it is necessary to idle the inside of the idling groove by 90 degrees. Otherwise, there was a problem that the valve stem did not operate. Further, in order to display the position of the idling groove of the worm wheel, it is necessary to further provide a mechanism for that purpose.

  The present invention has been made in view of the above problems, and even if neither an electric pump or a manual pump provided in a fluid pressure driving device that operates a valve stem can be used, the rotational operation and fluid pressure of the valve stem can be used. It is an object of the present invention to provide a manual operation device for a fluid pressure drive device that can be operated without interfering with the reciprocating operation of the drive device.

  Another object of the present invention is to provide a manual operation device for a fluid pressure drive device that can be immediately operated by manual operation when rotation of a valve stem is required.

In order to achieve the object of the present invention, a manual operation device for a fluid pressure drive device comprises:
Provided in a fluid pressure drive device equipped with a hydraulic rotation mechanism that rotates a stem of a valve provided in a pipeline or the like,
A manual operation device for a fluid pressure drive device for directly operating a valve stem from the outside of the fluid pressure drive device,
A manual operation device has a worm wheel rotatably incorporated in a valve stem, a worm meshing with the worm wheel, and a handle connected to the worm through a speed reducer as required, and the worm wheel Is connected to the valve stem via an interference prevention mechanism between the operation of the fluid pressure driving device and the rotational movement of the manual operation device to the valve stem.

  Such a fluid pressure drive device converts a gas pressure such as gas or air into an oil pressure, has a piston that is reciprocated by being pressurized in a cylinder using the oil pressure as a power source, and a rod integral with the piston, It is a cylinder-type drive device that includes a rotation mechanism having a scotch yoke or the like interlocking with the rod, and that rotates the valve stem by this rotation mechanism.

  Further, in such a manual operation device for a fluid pressure drive device, the fluid pressure drive device can obtain a rotational motion by directly acting on the rotor assembly using a gas pressure such as gas, air, or oil pressure as a drive source. The rotary drive device has a rotating mechanism that can rotate the valve stem by the rotating mechanism.

  Furthermore, in order to achieve another object of the present invention, a manual operation device for a fluid pressure drive device according to the present invention comprises a hearth coupling in which an interference prevention mechanism is provided on a worm wheel and has meshing teeth, and the hearth cup. A transmission hearth coupling having a meshing tooth for engaging with a meshing tooth of a ring and attached to the valve stem, and by engaging the meshing teeth with each other, the hearth coupling and the transmission hearth coupling Is configured to be connected as necessary.

  Further, in such a manual operation device for a fluid pressure drive device, the hearth coupling is rotatably incorporated in the valve stem and the transmission hearth coupling is slidably attached to the valve stem. And a sliding mechanism for meshing the meshing teeth of the transmission hearth coupling with the meshing teeth of the hearth coupling.

  Further, in the manual operation device for the fluid pressure driving device, the sliding mechanism can be moved in the horizontal inward direction from the outside of the driving device and has one operating member having an operating surface inclined with respect to the horizontal direction, And the other member having an operation surface inclined in the opposite direction slidingly contacting the operation surface of the one operation member, and the other operation member engages the transmission hearth coupling at the same position with respect to the hearth coupling. It can be slid and can be rotatably supported.

  Further, in the manual operation device for the fluid pressure drive device, the other operating member in the sliding mechanism fits and holds the transmission hearth coupling at the same position so as to be rotatable, and the one operating member is held by the manual operation device. The transmission hearth coupling can be slid in a direction away from the hearth coupling.

  Such a manual operation device for a fluid pressure drive device is freely connected to a rotation transmission pin in which an interference prevention mechanism in the manual operation device is provided in a valve stem, and the rotation transmission pin is engaged with the worm wheel by a predetermined rotation angle. And an idling groove formed so as to be movable.

  In this manual operation device for a fluid pressure drive device, in order to directly operate the valve stem from the outside of the fluid pressure drive device, a worm wheel directly connected to the valve stem, a worm meshing with the worm wheel, and a deceleration to the worm And the worm wheel has a mechanism for preventing interference between the operation of the fluid pressure drive device and the rotational movement of the manual operation device to the valve stem. Even if all oil pumps or manual oil pumps are malfunctioning, the valves used in pipelines etc. can be operated urgently by manual operation, and the rotation movement of the valve stem and the rotation of the worm by the fluid pressure drive device Rotation of the worm wheel valve stem by the interference prevention mechanism, usually not related to the manual operation device. Enabling automatic operation of the valve, since the enable only manual operation when needed, it is possible to perform efficient operation.

  The fluid pressure drive device provided with the above-described manual operation device has a piston rod that reciprocates using hydraulic pressure as a drive source, a cylinder type drive device having a rotation mechanism such as a scotch yoke, or an expected pressure such as gas or air, Alternatively, it may be a rotary type driving device that can be driven to rotate by directly acting on the rotor assembly while reducing the hydraulic pressure, and can be used as a fluid pressure driving device as long as the driving device can obtain a rotating operation. it can.

  Thus, with respect to the manual operation device for the fluid pressure drive device, there is provided a hearth coupling having an interference prevention mechanism provided on the worm wheel and having a meshing tooth, and a meshing tooth engaged with the meshing tooth of the hearth coupling. And a transmission hearth coupling attached to the valve stem, and configured to connect the hearth coupling and the transmission hearth coupling as necessary by meshing meshing teeth with each other. Therefore, rotation transmission for manual operation as required can be performed simply by engaging the meshing teeth of both couplings with each other, and can be reliably performed by manual operation.

  In the manual operation device for the fluid pressure drive device as described above, the hearth coupling is fixed to the valve stem, and the transmission hearth coupling is slidably attached to the valve stem. Since a sliding mechanism is provided for meshing the meshing teeth of the transmission hearth coupling with the meshing teeth of the hearth coupling, the operation is slid in order to mesh the meshing teeth of both hearth couplings. It can be done only by movement, and the structure can be simplified accordingly.

  In addition, such a sliding mechanism can be moved from the outside of the drive device in the horizontal inward direction and has one operating member having an operating surface that is inclined with respect to the horizontal direction, and the operating surface of the one operating member And the other actuating member having an actuating surface inclined in the opposite direction to be in sliding contact with the other, the other actuating member being able to slide the transmission hearth coupling in a direction perpendicular to the hearth coupling and rotatable Therefore, by simply moving one actuating member that can be moved from the outside in the horizontal direction, the actuating surface of one actuating member is inclined in the opposite direction of the other actuating member. The transmission hearth coupling can be pushed up by sliding, and the transmission hearth coupling is kept sliding so as to securely engage the meshing teeth with the hearth coupling. Is to be able immediately can be switched accurately yet easily from automatic actuation by fluid pressure driving apparatus of the valve stem to the manual operation.

  Further, in the manual operation device for the fluid pressure drive device, the other operating member in the sliding mechanism fits and holds the transmission hearth coupling at the same position so as to be rotatable, and the one operating member is held by the manual operation device. The transmission hearth coupling can be slid in the direction away from the hearth coupling by moving it in the horizontal outward direction. In addition to engaging the meshing teeth of the coupling, it is possible to reliably perform the operation in the direction of detachment of the transmission hearth coupling by the other operating member.

  The manual operation device for a fluid pressure drive device having the above-described configuration is configured so that the rotation transmission pin provided with the interference prevention mechanism on the valve stem and the rotation transmission pin are engaged with the worm wheel by a predetermined rotation angle to freely move. In the case of manual operation, rotational motion can be transmitted by engagement of the end of the idle groove and the rotation transmission pin. In this case, the valve stem can be freely rotated by the fluid pressure driving device without requiring a complicated mechanism.

  The novel features, configurations, and advantages of the present invention can be further understood from the accompanying drawings associated with the following description. In the drawings, the same reference numerals indicate the same components.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Prior to the manual operation device for a fluid pressure drive device according to the embodiment of the present invention shown in FIGS. 1 to 6, first, the manual operation device for the fluid pressure drive device shown in FIGS. 7 to 10 will be mainly described. To do.
The gas-hydraulic drive device 200 ′ shown in FIGS. 7 and 8 is used to operate a valve 300 provided in a pipeline as shown in FIG. Although the external shape is different, the cylinder-type hydraulic drive device 200 shown in FIG. 6 has a similar mechanism.

  As shown in FIG. 7 and FIG. 8, the gas-hydraulic drive device 200 ′ includes a valve 300 in a pipeline or the like that reciprocates the rod 204 ′ by a piston in a cylinder 203 ′ by a Scotch yoke 202 ′. This is called a so-called cylinder-type hydraulic drive device having a structure in which the valve stem 6 is rotated to open and close '. The valve stem 6 can be opened and closed automatically by reciprocating the piston rod 204 ′ by operating a valve (not shown) provided on the switching valve mounting bracket 214 ′. Further, when actually used, a pressure booster 208 ′ is provided to convert the gas pressure into a hydraulic pressure and increase the pressure, and the hydraulic pressure is supplied to the cylinder 203 ′ via a switching valve to operate the required valve. In order to supplement the operation, an electric pump 205 ′ is provided, and is driven by a limit switch 209 ′ that is turned on / off by the rotation of the valve stem 6, so that the accumulator 207 ′ is used for the next operation. Can store hydraulic pressure. Further, a manual oil pump 206 'is provided for the case where the electric oil pump 205' cannot be used, so that the hydraulic pressure can be supplied to the cylinder 203 '.

  In such a cylinder-type hydraulic drive device, if the hydraulic supply pipe is damaged, the valve 300 may not be operated. Therefore, as shown in FIGS. Manual operation devices 100 and 100 ′ are provided between the devices 200 and 200 ′ and the valve 300 so that the valve 300 can be directly opened and closed.

  Next, a manual operation device 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. The manual operation device 100 penetrates through the inside of the casing 1 closed by the upper lid 5 fixed by the hexagon socket head cap bolt 44. Then, the valve stem 6 is positioned, and the penetrating portion is sealed by the O-rings 37 and 38 with respect to the upper lid 5 and the bottom plate, and is rotatably supported by the valve stem bearings 29 and 30. A scotch yoke 202 'as shown in FIG. 8 is attached to the upper end portion of the valve stem 6, and an operating shaft extending from the valve 300 is fitted into the shaft hole and connected to the lower end portion. A worm wheel 8 is attached to the valve stem 6 with a shim 35 and a thrust bearing 32 sandwiched between the projecting annular portions of the intermediate portion. The worm wheel 8 is connected to the upper lid 5 with a shim 36 and a worm wheel press 28. The thrust bearing 34 is sandwiched and held. A hearth coupling 9 having meshing teeth 9a on the lower circumferential portion is attached to the bottom side recess of the worm wheel 8 by a hexagon bolt 46, and the worm wheel 8 and the hearth coupling are connected by a hearth coupling pin 22. A shearing force in the rotational direction between 9 and 9 is applied. The transmission hearth coupling 10 having the meshing teeth 10b on the circumferential portion of the facing surface facing the hearth coupling 9 is slidable with respect to the valve stem 6 and is integrally rotated by the valve stem key 23. It is attached as follows.

  A mechanism for preventing interference between the rotational movement of the fluid pressure driving device 200 by the scotch yoke 202 'and the rotational operation of the worm wheel 8 by the worm 7 to the valve stem 6 as described above will be described below. The interference prevention mechanism includes an upper lifting / lowering bracket 11 that is the other operating member and a lower lifting / lowering bracket 12 that is one operating member, and the lower lifting / lowering bracket 12 holds both sides thereof. A lifting bracket guide 13 fixed to the bottom plate by a hexagon socket head cap bolt 45 is provided, and the front side in FIG. 3 is not shown, but a rising prevention guide 13a is provided so as to form a concave groove in the lower end portion inside thereof. ing. The lower lifting / lowering bracket 12 slidably disposed between the both lifting / lowering bracket guides 13 is shaped so that the valve stem 6 can be moved in the same position and has a valve stem penetrating portion at the center thereof. 12a is provided, and an inclined surface 12f is formed in the central portion excluding the valve stem penetrating portion 12a, leaving the side wall 12c on the lifting bracket side guide 13 side, and a lower lifting bracket is formed on the upper end side of the inclined surface 12f. An elevator handle shaft combination portion 12b that engages an end portion of the elevator handle shaft 17 for sliding the slider 12 is formed. Further, the elevator bracket 12 is prevented from rising at the lower outer end portions of both side walls 12c. A guide 12e is slidably engaged with the ascent prevention guide 13a of the elevating bracket guide 13 and provided.

  Further, as shown in FIGS. 3 and 4, the upper elevating metal fitting 11 is formed with an inclined surface 11a inclined in the opposite direction so as to slide on the inclined surface 12f of the lower elevating metal fitting 12, On the side of the inclined surface 11a, an elevating pin 19 is provided so as to protrude substantially at the center. The elevating pin 19 is movably engaged with an elevating groove 12d provided in the same inclination direction as the inclined surface 12f at a substantially central portion of the side wall 12c of the lower elevating metal fitting 12. As shown in FIG. 4, the upper lifting / lowering fitting 11 is formed with a through hole through which the valve stem 6 is pivotally inserted at a substantially central portion thereof. The transmission hearth coupling 10 is concentric with the through hole. A transmission hearth coupling fitting portion 11b for fitting a rotatable cylindrical portion at the bottom of the figure is formed. Further, the transmission hearth coupling fitting portion 11b is provided with a same-position rotating pin 20 projecting in the diametrical direction. The same-position rotating pin 20 is housed and provided in the same-position rotating pin storage groove 10 a formed in the cylindrical portion of the transmission hearth coupling 10, and the transmission hearth coupling 10 can freely rotate to the upper lifting bracket 11. Is fitted and held.

  Further, the lower elevating metal fitting 11 has a sliding mechanism for moving in the horizontal direction in FIG. 1 in order to elevate and lower the upper elevating metal fitting 11 slidably attached to the valve stem 6 with the above configuration. Yes. In this sliding mechanism, the lifting handle shaft 17 whose one end is engaged with the lifting handle shaft combination portion 12 b of the lower lifting bracket 12 is lifted to the nut portion of the lifting bracket operating shaft boss 4. By screwing the bolt part of the handle shaft 17, the handle part 17 can be moved by the rotation operation of the handle 66 for the lifting bracket attached to the other end of the lifting handle shaft 17. The position check plate 18 is fixed between the lift operation shaft boss 4 and the lift bracket shaft handle 66 by a position check plate stopper 26 and a spring pin 53. In this lifting bracket operating shaft boss 4, the lifting handle shaft 17 is provided with an O-ring 41, a scraper 42, and a retaining ring 43, so that internal grease 70 leaks to the outside and foreign matter enters from the outside. To prevent. When the limit switch 68 is turned ON by the position confirmation plate 18, a signal indicating that the cylinder type driving device can be operated is transmitted to the control room. Although not shown in detail, it is fixed by a padlock 51 so that the U-shaped lifting bracket stopper 27 cannot be removed so as to prevent accidental unnecessary manual switching. You can also.

  Furthermore, the manual operation device 100 having the above-described configuration is provided with an operation mechanism for rotating the worm 7 as clearly shown in FIG. This operating mechanism supports both ends of the worm shaft of the worm 7 by the worm reducer side boss 2 and the worm support side boss 3, and the primary reducer 64 is a hexagon socket head cap screw on the worm reducer side boss 2. The primary speed reducer handle 65 is fixed to the input shaft of the primary speed reducer 64 by a hexagonal set screw 52 and a primary speed reducer input shaft key 25, and the primary speed reducer handle display board 58 is secured by a hexagon socket bolt 49. Is attached. In the worm reducer side boss 2, the worm shaft is connected to the worm shaft sleeve 16, which is the output shaft of the primary reducer 64, by the worm shaft key 24, and a hexagon socket head cap screw is attached to the end of the worm reducer side boss 2. The worm speed reducer side flange 14 is attached by 47, sealed by O-rings 39 and 40, and supported by the worm shaft bearing 31. In the worm support side boss 3, the worm shaft cover flange 15 is sealed by an O-ring 39, fixed by a hexagon socket bolt 47, and supported by a worm shaft bearing 31. The worm shaft is further provided with a thrust bearing receiver 54 so that the thrust bearing receiver 54 faces each of the worm speed reducer side boss 2 and the worm support side boss 3, and a thrust bearing 63 is provided therebetween. .

  Further, a limit switch 68 having an operation rotating roller for interlocking with the valve position confirmation plate 18 is attached to a limit switch mounting plate 55 provided integrally with the casing 1 by a hexagon socket head bolt 60 and a spring washer 61. Then, the rotary roller is pushed in and retracted by the advancement / retraction of the valve position check plate 18 to operate the limit switch 68, and the operation state can be confirmed at a remote position by a signal sent by the operation. It has become. Further, the display plate 57 is fixed to the front side wall surface of the casing 1 by a cross-recessed machine screw 59 with the display plate mounting seat 56 interposed therebetween.

  The manual operation device 100 configured as described above can be operated as follows. In the state shown in FIG. 1, the hearth coupling 9 integrated with the worm wheel 8 and the transmission hearth coupling 10 provided on the valve stem 6 so as to be movable up and down by the valve stem key 23 in the drawing are engaged with each other. 9a and 10b are not engaged with each other, and the worm 7 is rotated via the primary speed reducer 64 by the primary speed reducer handle 65, and the worm wheel 8 that is engaged with the transmission is rotated. Rotation cannot be transmitted to the valve stem 6 only by idling. In this state, when the rotation operation is transmitted to the valve stem 6 connected to the fluid pressure drive device 200 provided above the upper lid 5 by the operation of the fluid pressure drive device 200, the rotation operation is directly performed by this manual operation. It is transmitted to the valve 300 located on the lower side of the operating device 100. At this time, since the transmission hearth coupling 10 is integrated by the valve stem key 23, it can be rotated together with the valve stem 6.

  In the manual operation device 100, when manual operation is performed, first, when the lifting / lowering bracket shaft handle 66 is rotated to the right, the lifting / lowering handle shaft 17 can be moved to the right in FIG. The upper lifting / lowering bracket 12 sandwiched between the fixed lifting / lowering bracket guides 13 can be moved to the right in the figure by a distance of the length W1 of the lifting / lowering groove 12d formed in the side wall 12c. In order to enable this movement, the valve stem penetrating portion 12a is provided with a space of W2 between the valve stem 6 and the valve stem 6 so as to have a relationship of W2> W1.

  Further, lifting pins 19 fixed to both side surfaces of the upper lifting bracket 11 are engaged with the lifting grooves 12 d provided on the side walls 12 c on both side surfaces of the lower lifting bracket 12, so The elevating metal fitting 11 is assembled such that the inclined surfaces 11a and 12f are aligned with their inclination directions reversed. As a result, when the lower lifting / lowering bracket 12 is moved to the right side in the drawing, the inclined surface 12f pushes the inclined surface 11a of the upper lifting / lowering bracket 11 upward with the component force in the axial direction of the valve stem 6. When the upper elevating bracket 11 moves upward, as shown in FIG. 4, the transmission hearth coupling 10 that holds the position in the transmission hearth coupling fitting portion 11a and is pivotably fitted together is brought together. As shown in FIG. 5, the meshing teeth 9 a of the hearth coupling 9 integrated with the worm wheel 8 mesh with the meshing teeth 10 b of the transmission hearth coupling 10, thereby rotating from the worm 7. The force is transmitted to the valve stem 6 via the worm wheel 8, the hearth coupling 9, and the transmission hearth coupling 10, and the valve 300 can be opened and closed.

  When the meshing teeth 9a and 10b of the hearth coupling 9 and the transmission hearth coupling 10 do not mesh with each other as described above, the transmission hearth coupling 10 is moved upward by operating the lifting bracket shaft handle 66. While moving, the worm 7 may be rotated to the valve opening side or the closing side to engage with each other.

  Next, when the operation of the manual operating device 100 is separated from the operation of the valve stem 6, when the lifting handle shaft handle 66 is rotated counterclockwise, the lifting handle shaft 17 has its end provided on the lower lifting fixture 12. Since it is connected to the lift handle shaft combination part 12b, the lift groove 12d of the lower lift metal fitting 12 is moved to the left side of the figure, and the upper lift metal fitting 11 engaged with the lift groove 12d provided parallel to the inclined surface 12f. Since the lifting / lowering pins 19 do not move in the moving direction of the lower lifting / lowering bracket 12, the upper lifting / lowering bracket 11 is moved downward. The downward movement of the upper lifting / lowering bracket 11 is guided by the rise prevention guide 12e provided at the lower portion of the lower lifting / lowering bracket 12 being engaged with the lifting prevention guide 13a of the lifting / lowering bracket guide 13. The push-pull operation of the metal fitting 12 is performed smoothly and can be performed reliably and accurately.

  Further, the downward movement of the transmission hearth coupling 10 is caused by the fact that the elevation pins 19 provided on the upper elevation bracket 11 are engaged with the elevation grooves 12 d of the lower elevation bracket 12, and further to the transmission hearth coupling 10. Since the same-position rotation pin 20 that protrudes into the transmission hearth coupling fitting portion 11b is engaged in the formed same-position rotation pin storage groove 10a, the lower lift bracket 12 is shown on the left side. This can be done reliably and accurately by the downward movement of the upper elevating bracket 11 by the movement of the direction.

  As described above, in the above-described manual operation device 100, when the transmission hearth coupling 10 and the hearth coupling 9 are engaged, the valve stem 6 is directly opened / closed with respect to the opening / closing operation of the worm 7. It can be made unnecessary and does not require unnecessary operation. Therefore, it is not necessary to provide a separate mechanism for confirming the position of the valve.

  Further, when the cylinder type hydraulic drive device is used without using the manual operation device 100, the worm 7 and the worm wheel 8 can freely rotate, but there is nothing related to the operation of the valve 300. Will not. However, in order to prevent accidental manual operation, the elevating handle shaft 17 is provided so as to straddle the U-shaped lifting bracket stopper 27 so that it cannot be removed using the padlock 67, By using the position confirmation plate 18, the lifting / lowering handle shaft can be prevented from moving.

  A manual operating device for a fluid pressure drive device according to an embodiment of the present invention is also shown in FIGS. 7 to 10, as developed prior to the manual operating device shown in FIGS. It may be a manual operation device according to another embodiment as described in FIG. The manual operation device 100 ′ partially combined with the fluid pressure drive device 200 ′ as described above includes the worm 7, the worm wheel 8 meshing with the worm 7, the primary reduction gear 64, and the like. It is almost the same as 100. The feature is that a rotation transmission flange 80 integral with the valve stem 6 is provided so as to face the worm wheel 8 rotatably provided to the valve stem 6 so as to transmit the rotational force to the valve stem 6. As shown in FIG. 10, which is a view of the pair of rotation transmission pins 81 symmetrically attached to the rotation transmission flange, taken along line XX in FIG. 7, two rotations formed on the worm wheel 8 are formed. That is, the transmission pin 81 is movably engaged with two arcuate idling grooves 83 having the same radius concentric with the transmission pin 81 and corresponding to a rotation angle of approximately 90 °.

  Further, a spur gear (large) 72 is provided adjacent to the upper side of the worm wheel 8 in the figure, and the worm wheel 8 is connected to the worm wheel by a connection pin 85 as shown in FIG. 9 along line IX-IX in FIGS. It is integrated with the wheel 8, and its rotation can be transmitted to the manual operation opening pointer 76 to display the rotation state. Therefore, the spur gear (small) 74 is overlapped with the spur gear (large) 72 by being superposed on the upper end portion of the small support shaft 73 attached to the bottom plate of the casing 1 so as to rotate integrally with the bevel gear (small) 77. It is provided to fit. In order to transmit the rotation from the bevel gear (small) 77, a bevel gear (large) 76 fixed to the opening guide shaft 75 supported by a boss provided on the side of the casing 1 is a bevel gear (small). 77 is provided to mesh.

  In order to rotate the worm 7, one end of the worm shaft connected to the output shaft of the primary speed reducer 64 to which a handle (not shown) is attached is connected to the boss 2 on the speed reducer side, and the other end of the worm shaft. The end is rotationally supported by the worm support side boss 3.

  In the manual operation device 100 ′ having the above-described configuration, the valve stem 6 is normally automatically rotated by the operation of the cylinder-type driving device 200 ′ to open and close the valve. . In this case, the rotation of the valve stem 6 moves the rotation transmission pin 81 together with the rotation transmission flange 80, but the opening / closing angle of the valve is 90 °, and as shown in FIG. 9 or FIG. It is possible to move freely in the eight idling grooves 83 according to the opening / closing operation of the valve. At that time, both end portions of the idling groove 83 are actually formed so that the rotation angle further increases by 3 °, and there is a margin so that the rotation operation is not performed directly when performing manual operation. Operation is enabled. After the worm wheel 8 is actually rotated by 3 ° to the end of the idling groove 83, the rotation transmission pin 81 is moved by 90 ° from the end of the idling groove 83 to move the rotation. The valve stem 6 is operated by 90 ° through the flange 80 to open and close the valve. Thereafter, the valve stem 6 is rotated by a total of 96 ° until it hits the end of the idling groove 83 by a rotation operation of 3 °.

  Normally, if the worm 7 is rotated by the primary speed reducer 64 so that the manual operation pointer 78 is in the automatic position, the cylinder-type driving device 200 can move the 90 ° range in the idling groove 83. Thus, the rotation transmission pin 81 can be rotated to automatically open and close the valve.

  As described above, the interference prevention mechanism is provided by the rotation transmission pin 81 attached to the rotation transmission flange 80 of the valve stem 6 and the idling groove 83 of the worm wheel 8, and the number of components can be reduced. Therefore, the structure for taking out the rotation of the worm wheel 8 can be simplified.

  The manual operation device according to the above-described embodiment has been described as the fluid pressure drive device 200, 200 ′. However, as shown in FIGS. 11 and 12, a rotary drive device 200 ″ may be used. The rotary drive device is closed at the bottom by a lower head 214 ", the valve stem 6 is passed through the lower head 214", and a stationary shoe 216 is bolted to the inner wall portion of the cylindrical body 210 ". . Further, a rotor assembly 218 ″ is fixedly attached to a portion of the valve stem 6 inside the cylindrical body 210 ″, and the top of the cylindrical body 210 ″ is closed by an upper head 212 ″.

  In this rotary type driving apparatus 200 ″, a gas pressure, air pressure or hydraulic pressure is supplied to a chamber between the stationary shoe 216 ″ and the rotor assembly 218 ″ to rotate the rotor assembly 218 ″. A rotational motion can be given to the stem 6, and when combined with the manual operation device 100, 100 ′ as described above, the same function as the fluid pressure driving device 200, 200 ′ can be obtained.

  As described above, it is obvious that the manual operation device for a fluid pressure drive device according to the present invention is not limited to the above-described embodiment, and can be implemented within the technical scope described in the claims.

It is a partially broken side view showing a manual operation device for a fluid pressure drive device according to an embodiment of the present invention. FIG. 2 is a plan view of the manual operation device for the fluid pressure drive device shown in FIG. 1 according to an embodiment of the present invention. It is a disassembled perspective view of the upper and lower raising / lowering metal fittings in the manual operation apparatus of FIG. It is a disassembled perspective view of the upper raising / lowering metal fitting and transmission hearth coupling in the manual operation apparatus. It is explanatory drawing which shows the meshing state of the meshing tooth of the hearth coupling and the transmission hearth coupling in the manual operation device. It is an external view which combined the fluid pressure drive device by one embodiment of this invention, the manual operation apparatus, and the valve | bulb. It is a fragmentary sectional elevation view of the fluid pressure drive provided with the manual operation apparatus by other embodiment of this invention. FIG. 9 is a plan view of a fluid pressure drive device according to another embodiment of the present invention in FIG. 7. It is explanatory drawing seen in the arrow direction along the AA line of FIG. It is explanatory drawing seen in the arrow direction along the BB line of FIG. It is a fractured perspective view of the fluid pressure drive device by other embodiments of the present invention. It is a disassembled perspective view of the fluid pressure drive device of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Worm speed reducer side boss 3 Worm support side boss 4 Elevating bracket operation axis boss 5 Casing upper cover 6 Valve stem 7 Worm 8 Worm wheel 9 Hearth coupling 9a Engagement tooth 10 Transmission hearth coupling 10a Same position rotation pin storage Groove 10b Engagement tooth 11 Upper lifting bracket 11a Upper lifting bracket inclined surface 11b Transmission hearth coupling fitting portion 12 Lower lifting bracket 12a Valve stem penetration portion 12b Lifting handle shaft combination portion 12c Lower lifting bracket sidewall 12d Lifting groove 12e Lifting prevention guide 12f Lower lifting bracket inclined surface 13 Lifting bracket guide 13a Lifting prevention guide 14 Worm shaft reduction gear side flange 15 Worm shaft cover flange 16 Warm shaft sleeve 17 Lifting handle shaft 18 Valve position confirmation plate 19 Lifting pin 20 Pin for same position rotation 21 Pin for top cover 22 Pin for hearth coupling

23 Valve stem key 24 Worm shaft key 25 Primary reduction gear input shaft key 26 Position check plate stopper 27 Lifting bracket stopper 28 Worm wheel presser 29 Valve stem bearing 30 Valve stem bearing 31 Worm shaft bearing 32 Thrust bearing 33 Thrust bearing 34 Thrust Bearing 35 Shim 36 Shim 37 O-ring 38 O-ring 39 O-ring 40 O-ring 41 O-ring 42 Scraper 43 Retaining shaft 44 Hexagon socket head cap screw 45 Hexagon socket head cap screw 46 Hexagon socket head cap screw 47 Hexagon socket head cap screw 48 Hexagon socket head cap screw 48 49 Hexagon socket head cap screw 50 Hexagon nut 51 Flat washer 52 Hexagon socket head set screw 53 Spring pin 54 Thrust bearing holder

55 Limit switch mounting plate 56 Display plate mounting seat 57 Display plate 58 Primary reduction gear handle indicating plate 59 Cross-recessed machine screw 60 Hexagon socket head cap screw 61 Spring washer 62 Hexagon nut 63 Thrust bearing 64 Primary reduction gear 65 Handle for primary reduction gear 66 Lifting bracket shaft handle 67 Padlock 68 Limit switch 69 Hexagon socket head set screw 70 Grease 71 Secondary reducer casing 72 Spur gear (large)
73 Gear support shaft for pointers 74 Spur gear (small)
75 Support shaft for pointer 76 Bevel gear (large)
77 Bevel gear (small)
78 Opening guideline for manual operation 79 Connection pin 80 Rotation transmission flange 81 Rotation transmission pin 82 Mounting bolt 83 Idling groove 84 Torque pin

100,100 'manual operation device 200,200', 200 '' gas-hydraulic drive device 210 '' body 212 '' upper head portion 214 '' lower head portion 216 '' stationary shoe 218 '' rotor assembly 300 valve device

Claims (8)

Provided in a fluid pressure drive device equipped with a rotation mechanism etc. that rotates a stem of a valve provided in a pipeline or the like using fluid pressure as a power source,
A manual operation device for a fluid pressure drive device for directly operating the stem of the valve from the outside of the fluid pressure drive device,
The manual operating device has a worm wheel rotatably incorporated in a valve stem, a worm meshing with the worm wheel, and a handle connected to the worm through a speed reducer as required; and The worm wheel is connected to the valve stem via an interference prevention mechanism between the operation of the fluid pressure driving device and the rotational movement of the manual operation device to the valve stem. Manual operation device.   The fluid pressure driving device converts a gas pressure such as gas or air into hydraulic pressure, and uses the hydraulic pressure as a power source, and a piston that is reciprocated by being pressurized in a cylinder with gas pressure such as gas or air, 2. A cylinder-type drive device comprising a rotation mechanism having a rod integral with a piston and having a scotch yoke or the like interlocking with the rod, and rotating the valve stem by the rotation mechanism. A manually operated device for the fluid pressure drive described.   The fluid pressure driving device has a rotating mechanism capable of obtaining a rotational motion by directly acting on a rotor assembly using a gas pressure such as gas, air, or hydraulic pressure as a driving source, and the rotating mechanism of the valve is provided by the rotating mechanism. The manual operation device for a fluid pressure drive device according to claim 1, wherein the manual drive device is a rotary drive device that rotates the stem.   The interference preventing mechanism of the manual operation device is provided on the worm wheel and has a hearth coupling having a meshing tooth, and has a meshing tooth engaged with the meshing tooth of the hearth coupling and attached to the valve stem. The transmission hearth coupling is configured so that the hearth coupling and the transmission hearth coupling are engaged as necessary by meshing the meshing teeth with each other. The manual operation device for a fluid pressure drive device according to claim 1.   The hearth coupling is rotatably incorporated in the valve stem, and the transmission hearth coupling is slidably attached to the valve stem. The manual operation device for a fluid pressure drive device according to claim 4, further comprising a sliding mechanism for engaging with the meshing teeth of the hearth coupling.   The sliding mechanism can be moved inward in the horizontal direction from the outside of the manual operation device and has an operating surface inclined with respect to the horizontal direction, and slides on the operating surface of the one operating member. A second actuating member having an actuating surface inclined in an opposite direction to contact, the other actuating member sliding the transmission hearth coupling in the engagement direction at the same position with respect to the hearth coupling. The manual operation device for a fluid pressure drive device according to claim 5, wherein the manual operation device is capable of being rotated and supported.   The other actuating member in the sliding mechanism holds the transmission hearth coupling rotatably in the same position, and moves the one actuating member in the horizontal outward direction of the manual operation device. The manual operation device for a fluid pressure drive device according to claim 6, wherein the transmission hearth coupling can be slid in a direction away from the hearth coupling. The interference preventing mechanism in the manual operation device is formed so that the rotation transmission pin provided on the valve stem and the rotation transmission pin can engage with the worm wheel by a predetermined rotation angle and freely move. The manual operation device for a hydraulic drive device according to claim 1, further comprising an idling groove.

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