JPH022126Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an opening meter for a valve opener installed below the ground surface.

[Conventional technology]

Conventionally, this type of device has been configured to drive the opening degree display pointer through a deceleration mechanism using a worm and a worm wheel or gears with different numbers of teeth meshing with each other.

Therefore, all conventional devices have complicated structures, are difficult to process, and are large in size, resulting in high costs.

Therefore, the present applicant has already filed an application for an opening gauge for a valve opener, which is disclosed in Japanese Patent Application Laid-Open No. 60-263792. That is, a guide spiral body having a spiral elongated hole formed in a part of the circumferential surface is fixed concentrically inside a case with a lid body,
A male screw having a smaller helical angle than the long spiral hole is formed at the inner center of the guide spiral body, and a drive whose upper end can be connected to a valve opener such as a valve, and whose lower end can be connected to a valve stem of a valve or the like. The screw is arranged so that it can rotate freely with measures to prevent it from moving in the axial direction. A female thread having the same helical angle as the male thread of the drive screw is formed on the inner diameter surface between the drive screw and the guide spiral body, and one end of the outer circumferential surface can be loosely inserted into the spiral elongated hole of the guide spiral body. A deceleration screw with a protruding slider is assembled so as to be movable concentrically in a sliding spiral manner. A guide rod with a pointer is loosely inserted into one end of the deceleration screw, and the pointer is arranged so as to be able to move integrally with the case toward the outer circumferential side within the flange surface of the upper part of the case.

[The problem that the idea aims to solve]

However, according to the opening gauge for a valve opener disclosed in Japanese Patent Application Laid-Open No. 60-263792, the reduction screw, which is the main part, is arranged inside the case. Therefore, the main parts such as the male screw part of the drive screw into which this deceleration screw is screwed and the guide spiral body into which the slider is loosely inserted are located inside the case, so the opening degree display scale formed on this case. is placed further on the outer periphery of each of the above-mentioned important parts, which increases the size of the entire case, which increases costs. This poses a problem in that large-diameter support members, lids, and the like are required to match the openness gauge, resulting in high installation costs for the opener.

This idea was made to solve the above-mentioned problems, and its purpose was to reduce the diameter of the entire structure and make it more compact. It is an object of the present invention to provide an opening degree meter for a valve opener such as a valve that can reduce the installation cost related to the opener by reducing the diameter of a case and a lid that serve as supporting members even when stored in a chamber.

[Means for solving the problem and their effects]

In order to solve the above problems, in the present invention,
A threaded rod whose upper end is connectable to an opener such as a valve and whose lower end is connectable to a valve stem of a valve, etc., and a threaded portion of the small helical pitch of the threaded rod, and a cylindrical shape extending from the outer circumferential end. A nut member having a slider that is loosely inserted into a spiral elongated hole of a guide spiral body so as to be able to move spirally, and a guide rod that penetrates the nut member in the longitudinal direction and has a pointer means at one end thereof in the outer circumferential direction of the base. In the opening meter for a valve opener such as a valve, the screw rod is pivotally supported, the screw rod is arranged concentrically around the screw rod, and is attached to an inner case of a valve housing, etc., and at one end of the peripheral wall thereof. A base having a notch and an opening degree display scale formed in the circumferential direction on the inner bottom surface thereof, and a base having a spiral elongated hole in a part of the circumferential surface, which is attached directly below the base and also arranged concentrically. a guide spiral body; and a slide rod, which is inserted into the long spiral hole of the guide screw body so that the slider can move in a spiral manner and extend outwardly, and into which a guide rod is inserted vertically into the tip end of the slide rod. and a movable pointer means connected to the tip of the guide rod and displaying the opening degree on the opening degree display scale of the base from the outer circumferential side toward the center of the threaded rod.

By adopting the above configuration, the entire diameter is reduced and the size is reduced, which not only allows for a significant cost reduction, but also reduces the need for the case and lid that serve as supporting members when storing the valve in an underground valve chamber. By reducing the diameter, installation costs related to the cap opener can be reduced.

〔Example〕

This invention will be explained below based on the drawings.

The opening degree meter A for a cap opener according to this invention is constructed as follows. That is, Figures 1 and 2
As shown in the figure, this openness meter A has a base 1 having a U-shaped cross section and a bearing 1b fixed at the center of the bottom thereof. At one end of the peripheral wall of the base 1, a horizontally long notch 1a is formed by cutting out the peripheral wall.
is provided. Further, an opening degree display scale 1c is formed in the circumferential direction on the inner bottom surface of the base that communicates with the notch portion 1a, with numerical values in a range that corresponds to the amount of movement of a pointer 7, which will be described later. Further, screw holes 1d for bolting a guide screw body 4, which will be described later, are provided at intervals on the outer bottom surface of the base. A screw hole is provided in a part of the peripheral wall facing the notch 1a, and the base 1 is screwed into the inner case 12 (described later) which serves as a support during construction. A set screw 9 is screwed in to secure the fit.

A drive screw 2, a deceleration screw 3, a guide spiral body 4, and a slide rod 5, shown individually below, are arranged at the lower part of the base 1 as described above, thereby forming a set of deceleration mechanisms.

That is, the following guide spiral body 4 is fixed concentrically to a position directly below the base 1 described above.
This guide spiral body 4 is formed into a cylindrical body with a flange surface 4b formed on the upper part, and a part of its circumferential surface has a helical angle (pitch) that is higher than the male screw part 2a of the drive screw 2, which will be described later. A long spiral hole 4a with a large diameter is formed. This guide spiral body 4 has mounting holes 4 which are formed through the flange surface 4b at intervals.
It is fixed directly below the base 1 by screwing the bolt 10 into the screw hole 1d on the outer bottom surface of the base 1 from c and tightening the bolt 10.

A drive screw 2 shown below is inserted through the axes of the base 1 and the guide spiral body 4 as described above. This drive screw 2 has a handle shaft portion 2b formed at its upper end. Also, directly below the flanged shaft portion 2c,
Further, a small diameter shaft portion 2d is formed at the lower end, and the flanged shaft portion 2c and the small diameter shaft portion 2d
A male screw portion 2a for screwing together a deceleration screw 3, which will be described later, is screwed onto the intermediate shaft between the two. The drive screw 2 according to this embodiment is rotatably arranged with the flanged shaft portion 2c inserted into the bearing 1b of the base 1 described above.

The male threaded portion 2a of the drive screw 2 as described above has the same helical angle (pitch) as this male threaded portion 2a on the inner diameter surface.
A nut-shaped deceleration screw 3 having a female threaded portion 3a is screwed together so as to be able to slide and move in a spiral manner. At the position of the screw hole 3b provided at one end of the outer periphery of the deceleration screw 3, there is a bolt-shaped slide rod 5 with a vertical hole 5a penetrating through a part of its enlarged diameter head, which is connected to the axial hole. By inserting the set screw 8 and screwing the threaded portion at the tip into the screw hole 3b, they are connected so as to be able to form an integral spiral. In this case, the body of the slide rod 5 below the neck is loosely inserted into the long screw hole 4a of the guide screw body 4 from the outside.

A U-shaped pointer 7 is formed in the upper part of the vertical hole 5a of the slide rod 5, and directly below the pointer 7 is a pointer means in which guide rods 6 are vertically connected.
It is constructed so that it can be moved in the circumferential direction with the slide rod 5 through loose insertion by the guide rod 6 described above.

Due to the assembly in the above-described manner, when the drive screw 2 coupled to the cap opener described later is rotated, the same helical angle on the deceleration screw 3 side receives the helical movement of the male screw portion 2a due to the small helical angle (small pitch). When the female threaded portion 3a (with the same pitch) makes a spiral motion on the axis of the male threaded portion 2a, the slide rod 5 connected to one end of the peripheral surface of the deceleration screw 3 moves further than the male threaded portion 2a of the drive screw 2. Since it is loosely inserted into the long spiral hole 4a of the guide spiral body 4 having a large spiral angle (pitch) so as to be able to slide and move in a spiral manner, the integral spiral movement in the female threaded portion 3a is reduced, As a result, the male screw portion 2a and the spiral elongated hole 4a are configured to spirally move in a coordinated manner at a rate reduced by an amount corresponding to the helical angle ratio.

In this case, the helical amount (stroke amount in the axial direction) and helical amount (rotation angle in the circumferential direction) of the deceleration screw 3 are set by the helical angle ratio of the drive screw 2 and the guide spiral body 4, By combining the set values on both sides, the rotation value of the drive screw 2 on the input side can be obtained from the output side deceleration screw 3 as a deceleration value that does not go around once, so that it moves in the circumferential direction integrally with the spiral movement of this deceleration screw 3. According to the above guideline 7,
It is configured such that it is possible to set the opening degree for a cap opener, which will be described later.

Next, the action will be explained.

When using the opening gauge A with the above configuration,
When the upper handle shaft portion 2b of the drive screw 2 is rotated, for example, in the opening direction, the deceleration screw 3 screwed into the male screw portion 2a of the drive screw 2 via the female screw portion 3a having the same helical angle is rotated. As the drive screw 2 rotates, a spiral movement begins. At this time, the slide rod 5 protruding outward from the guide spiral body 4 from one end of the circumferential surface of the deceleration screw 3 has a larger helical angle than the male screw portion 2a of the drive screw 2. Since the deceleration screw 3 is loosely inserted into the long hole 4a so as to be able to move in a spiral manner, the above-mentioned helical movement of the deceleration screw 3 is caused by the male screw portion 2a of the drive screw 2 and the spiral long hole 4a of the guide spiral body 4. The output is decelerated by an amount corresponding to the helical angle ratio. Therefore, the slide rod 5 and guide rod 6 connected to this deceleration screw 3
The pointer 7, which is positioned so that it can move integrally through the deceleration screw 3, moves concentrically in the opening direction by the same amount as the helical angle of the deceleration screw 3. Thereby, the amount of opening of the cap opener can be read smoothly, easily and accurately using the displayed value on the opening degree display scale 1c that has stopped after the pointer 7 has moved.

FIG. 3 shows an embodiment in which the open degree gauge A according to this invention is used for a valve opener.

In this usage example, the opening/closing operation of the valve 15 in the fluid path is performed using the helical amount (rotation angle in the circumferential direction) of the opening gauge A. That is, the outer case 11 and the inner case 1 are placed between the upper concrete frame C of the valve chamber B, which has been constructed in advance underground directly below the ground surface E where the opener is planned to be installed.
2 and 2 are integrally stored with the height relationship set by the insertion and fitting manner in which both can be slidably contacted. The enlarged diameter edge of the upper end of the base 1 of the opening gauge A of this invention is engaged with the upper concave position of the inner case 12 housed in this manner, and then screwed into one end of the peripheral wall of the base 1. By screwing the set screw 9 into the inner periphery of the cylindrical surface of the inner case 12 at this position and projecting it in a pressing manner, the entire opening gauge A can be stably suspended within the inner case 12. It can be fixed with a state. In this case, the lid 13 is removably attached to the upper part of the opening of the opening gauge A using the upper recess of the inner case 12.

When the universal joint 14 is connected in a hanging manner by inserting a bolt into the small-diameter shaft portion 2d located at the lower end and hooking it with a nut, etc., the universal joint 14 is connected directly below the opening gauge A according to the above embodiment. A valve 15 or the like with a valve shaft 17, which has a valve body (not shown) inserted into the valve box 16 in the fluid path in the valve chamber B so as to be able to open and close the valve, can be smoothly opened by minimizing the size of the valve. Easy to install.

When opening and closing the fluid path at this position via the valve 15 installed as described above, first remove the lid 13 at the ground surface E, and then open the handle shaft in the base 1 by operating a valve opener (not shown) or the like. Part 2b
When the drive screw 2 is rotated by a predetermined amount in a specified direction, the male thread part 2a of the drive screw 2 has a female thread part 3a with the same helical angle.
The deceleration screw 3, which is screwed into the drive screw 3, starts a helical movement in the same direction as the rotation of the drive screw 2. At this time, the slide rod 5 connected to the deceleration screw 3 is connected to the male screw portion 2a of the drive screw 2 as described above.
Since it is loosely inserted into the long spiral hole 4a of the guide spiral body 4, which has a larger helical angle than the one shown in FIG. The reduced amount is output to the deceleration screw 3 side by the corresponding amount. Therefore, the valve shaft 17, which is connected to the lower end small-diameter shaft portion 2d of the deceleration screw 3 via the universal joint 14, rotates in the circumferential direction to a specified rotation angle due to the reduced helical amount. As a result, the fluid path of the valve box 16 can be easily and reliably opened and closed by the valve body (not shown) mounted on the valve shaft 17.

FIG. 4 shows another embodiment in which the opening degree meter A described above is used for a different type of opener for a valve or the like.

In this embodiment, the peripheral wall of the valve chamber B is formed by pouring concrete, so there is no need to use the outer case 11 and inner case 12 of the previous embodiment. Therefore, by fitting a receiving plate 18 with an open bottom into the upper recess of a vertical hole D provided on the ground surface E side and engaging the upper end of the base 1 with this receiving plate 18, the above embodiment can be achieved. Similarly, the entire opening gauge A can be fixed in a stable hanging state. In this case as well, the lid 13 is removably attached to the upper part of the opening of the opening gauge A. Therefore, in this embodiment as well, the valve can be opened and closed smoothly and easily in the same manner as described above by rotating the handle shaft portion 2b after once removing the lid 13.

[Effect of idea]

As explained above, in this invention, a notch 1a is provided at one end of the peripheral wall of the base 1, an opening display scale 1c is formed in the circumferential direction on the inner bottom surface of the notch 1a, and a peripheral wall is provided directly below the base 1. A guide spiral body 4 having a long spiral hole 4a formed in a part of the spiral body 4 is fixed to the guide spiral body 4.
A drive screw 2 having a male threaded portion 2a is rotatably disposed inside the drive screw 2, and a deceleration screw 3 connected to a slide rod 5 at one end of the outer periphery is attached to the drive screw 2.
are screwed together, and a guide rod 6 with a pointer 7 at the upper end fitted at the opening display scale 1c of the base 1 is loosely inserted into the vertical hole 5a of the slide rod 5 so as to be movable in the circumferential direction. This reduces the diameter of the entire valve and makes it more compact, resulting in a significant cost reduction.In addition, when the valve is stored in an underground valve chamber, the diameter of the case and lid, which serve as supporting members, are reduced, making it easier to open the valve. This has the effect of reducing equipment-related installation costs.

[Brief explanation of the drawing]

Fig. 1 showing an embodiment is a vertical cross-sectional view showing the opening gauge for valve openers etc. according to this invention, Fig. 2 is a front view of the guide spiral body which is the main part of the opening gauge, and Fig. 3. 4 is a longitudinal sectional view showing an embodiment in which the same opening degree gauge is equipped with an underground opener such as a valve, and FIG. 4 is a longitudinal sectional view showing another embodiment of the same. 1...Base, 1a...Notch, 1b...Bearing, 1c...Opening degree display scale, 2...Drive screw, 2
a...Male thread part, 3...Deceleration screw, 3a...Female thread part, 4...Guide spiral body, 4a...Spiral long hole,
5... Slide rod, 5a... Vertical hole, 6... Guide rod, 7... Pointer, A... Openness gauge.

Claims (1)

[Scope of utility model registration request] A threaded rod whose upper end is connectable to an opener such as a valve and whose lower end is connectable to a valve stem of a valve, etc., and a threaded portion of the small helical pitch of the threaded rod, and a cylindrical shape extending from the outer circumferential end. A nut member having a slider that is loosely inserted into a spiral elongated hole of a guide spiral body so as to be able to move spirally, and a guide rod that penetrates the nut member in the longitudinal direction and has a pointer means at one end thereof in the outer circumferential direction of the base. In the opening meter for a valve opener such as a valve, the screw rod is pivotally supported, the screw rod is arranged concentrically around the screw rod, and is attached to an inner case of a valve housing, etc., and at one end of the peripheral wall thereof. A base having a notch and an opening degree display scale formed in the circumferential direction on the inner bottom surface thereof, and a base having a spiral elongated hole in a part of the circumferential surface, which is attached directly below the base and also arranged concentrically. a guide spiral body; and a slide rod, which is inserted into the long spiral hole of the guide screw body so that the slider can move in a spiral manner and extend outwardly, and into which a guide rod is inserted vertically into the tip end of the slide rod. and a movable pointer means that is connected to the tip of the guide rod and displays the opening degree on the opening degree display scale of the base from the outer circumferential side toward the center of the threaded rod. Opener gauge for opener.