JPH05200663A - Valve element seat fitting machine - Google Patents

Abstract

PURPOSE:To enable an unskilled operator to do the fitting of a valve element safely with no help. CONSTITUTION:A cradle 2 is supported on one side part of a tablelike frame 1 free of slide motion in all directions, while an angle plate table 3, whose surface is tilted as far as the specified angle, is supported on this cradle 2 and, as eccentrically rotating the cradle 2 and this angle plate table 3 with an eccentric driver 4, and a surface plate 6 to be rotated by a rotary driver 7 supported on a stand 5 raised on the other side of the frame 1 liftably via a lifting operation mechanism 8, is constituted so as to make it come into contact with the top of a valve mounted element W being mounted on the angle plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve body sheet sliding machine.

[0002]

2. Description of the Related Art In a power plant or a chemical plant, for example, a large amount of sluice valves, check valves and the like having a valve body outer diameter of about 100 mm to 600 mm are used in large quantities. These valves are regularly disassembled and inspected for damage to the valve seat surface in order to prevent industrial accidents due to leakage. Then, in this inspection, when the valve body seat surface is found to have scratches to a certain extent or more, the seat surfaces are brought into sliding contact with each other in order to prevent the occurrence of leakage.

That is, first, a valve body to be slid is placed on an appropriate table, and a sleeper or the like is inserted in the lower portion of the valve body to secure the levelness of the sliding seat surface. A tool for sliding is connected to a movable rotary power source and a platen mounting part with two arms, and an air-type or electric drive device is provided on the rotary power source side, and is required at the other end of the arm. A surface plate having a diameter is attached, and the drive device and the surface plate are configured to be interlocked and connected via a chain arranged inside the arm. Further, the operation of the drive device is performed based on the rotational power source.

When the sliding is performed, first, the valve body is placed on an appropriate table, and a sleeper or the like is inserted under the valve body to horizontally position the seat surface to be slid. After this, polishing paper is attached to the surface of the surface plate, the tool is moved to the side of the table, and the surface plate is positioned above the valve body. Then, one worker is located on the surface plate side and the other one is on the rotation power side, and the rotation power side worker starts and stops the drive device according to an instruction from the surface plate side worker. An operator arranged on the surface plate side moves the surface plate to polish the seat surface so that the surface plate has a uniform surface pressure on the entire circumference of the valve sheet.

[0005]

Therefore, a worker arranged on the surface plate side requires a high degree of skill in order to move the surface plate so that the surface plate surface receives a uniform surface pressure over the entire circumference of the valve body seat. .. In addition, the connection operation of the workers is deviated, the surface plate surface pressure is applied incorrectly, and the surface plate is recoiled and repelled from the seat surface, or the worker placed on the surface plate side contacts the rotating surface plate. Safety precautions are also important so that you do not do anything.

Moreover, when at least two people are required to slide one valve, three workers will be required, and there is a problem that a lot of manpower is required. The present invention has been made in view of the above circumstances, and an object thereof is to provide a valve body sheet sliding machine capable of safely sliding the valve body by one operator having low skill.

[0007]

In order to achieve the above-mentioned object, a valve body sheet sliding machine of the present invention comprises a table-shaped mount and one side portion of the mount slidably supported in the front-rear and left-right directions. Pedestal, a pedestal table supported by the pedestal and having an upper surface inclined at a predetermined angle, an eccentric drive device arranged in the pedestal for eccentrically rotating the pedestal, and on the other side of the pedestal. The stand that has been raised, the surface plate that is placed on the upper surface of the valve body that is placed on the degree plate table, and that is arranged above the surface plate and is supported by the stand so that it can be moved up and down. It is characterized in that it is provided with a rotation drive device that rotates about a central axis and an elevating operation mechanism that elevates the rotation drive device.

[0008]

In the present invention, when the valve body is placed on the degree plate table, the upper surface of the degree plate table is inclined at a predetermined angle, so that the upper surface of the valve body, that is, the sliding sheet surface becomes horizontal. .. The sliding seat surface of the valve element is rubbed with a surface plate that is rotationally driven by a rotary drive device while being eccentrically rotated by the eccentric drive device together with the degree plate table and the pedestal, and is polished.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A valve body sheet sliding machine according to an embodiment of the present invention will be specifically described below with reference to FIGS.
FIG. 1 is a front view of a valve body sheet sliding machine according to an embodiment of the present invention, and FIG. 2 is a side view thereof.

This apparatus comprises a table-shaped mount 1, a pedestal 2 slidably supported on one side of the gantry 1 in the front and rear and left and right directions, and supported on the pedestal 2 with its upper surface at a predetermined angle. A tilting plate table 3 tilted to the right and an eccentric drive device 4 arranged in the gantry 1 for eccentrically rotating the pedestal 2 are provided. Further, this apparatus includes a stand 5 that is raised on the other side of the gantry 1, a surface plate 6 that is mounted on the upper surface of the valve body W that is mounted on the degree plate table 3, and a surface plate 6. And a rotation driving device 7 that is driven to rotate about a central axis. The rotation driving device 7 is disposed above the surface plate 6 and is supported by the stand 5 so as to be able to move up and down via an elevating operation mechanism 8 that moves the surface plate 6 and the rotation driving device 7 up and down.

Wheels 9 are rotatably suspended at the four corners of the front, rear, left and right under the pedestal 1 so that the pedestal 1 can be freely moved. As shown in the plan view of FIG. 3 and the side view of FIG. 4, the cradle 2 is provided with a pair of left and right slide guide shafts 11 fixed to the gantry 1 via bearings 10 forming front and rear pairs. , The front and rear sliding guide shafts 11 are slidably fitted with the pair of front and rear sliding bearings 12, and the front and rear sliding bearings 12 and 12 are slidably fitted to the left and right sliding guide shafts.
Sliding bearings 14 connected to each of the left and right slide guide shafts 13 and fixed to the four corners of the lower surface of the pedestal 2 are slidably fitted to the front and rear and left and right on one side of the gantry 1. Slidably supported by.

The degree plate table 3 may be fixedly supported on the pedestal 2. However, in this embodiment, a single apparatus can handle sliding of a plurality of types of valve bodies having different seat surface inclination angles. Therefore, the inclination angle of the upper surface can be adjusted. That is, a pair of front and rear brackets 15 are provided on the lower surface of the central portion of the degree plate table 3, and the support shaft 17 is attached to the pair of front and rear brackets 16 fixed to the upper surface of the central portion of the pedestal 2. While it is swingably supported around the front-rear axis, a screw rod 19 is supported on the pedestal 2 via a fixed block 18 so as to be rotatable around the left-right axis, and screwed to the screw rod 19 so as to be able to advance and retreat. The lower ends of a pair of front and rear arms 21 are swingably supported by the slide 20, and the upper ends of the arms 21 are swingably connected to the degree plate table 3. The screw rod 19 is a transmission mechanism including a bevel gear mechanism.
By interlocking with a handle 23 arranged on the front right side of the pedestal 2 via 22 and operating this handle 23, the slide 20 is moved in the left-right direction and the tilt angle of the degree plate table 3 is adjusted. I am trying.

After adjusting the tilt of the plate table 3, the bracket 15 and the bracket 16 are tightened to stop the rocking of the plate table 3 in order to fix the tilt angle of the plate table 3 to the adjusted angle. An angle fixing means 24 is provided. As shown in the side view of FIG. 5, the eccentric drive device 4 includes a motor 25 fixed to the gantry 1 via a motor pedestal 26, and an eccentric shaft 27 connected to an output shaft of the motor 25. ..

The eccentric shaft 27, as shown in FIG.
An eccentric shaft joint lower part 28 that is externally fitted and fixed to the output shaft of
The upper part 29 of the eccentric block connected to the lower part 28 so as to be movable in the lateral direction, the eccentric amount adjusting mechanism 30 for adjusting the amount of movement of the upper part 29 with respect to the lower part 28, and the hexagon socket head cap screw fixing the lower part 28 and the upper part 29. And fixing means 31. The movement of the lower part 28 and the upper part 29 may be configured such that the upper part 29 swings with respect to the lower part 28, but here, in order to simplify the structure, a slit 32 is formed at the lower end of the upper part 29. Then, at the upper end of the lower part 28,
The ridge 33 is slidably fitted in the ridge 33. The amount of eccentricity is adjusted by loosening the fixing means 31 so that there is a margin at the fitting position between the slidable slit 32 at the lower end of the upper part 29 and the convex strip 33 of the lower part 28.

As shown in FIG. 6, the eccentricity adjusting mechanism 30 is rotatably supported by the lower end of the upper part 29 and the lower part.
By rotating the screw shaft 34 screwed to the ridge 33 of the 28 by operating the operation portion 35, the shaft center of the upper part 29 with respect to the shaft center of the lower part 28 is moved in the left-right direction in the front view of FIG. It is designed to move in the direction perpendicular to the paper in the side view. After the upper portion 29 is eccentric with respect to the lower portion 28 by the eccentricity adjusting mechanism 30, the fixing means 31 consisting of a hexagon socket head cap screw screwed into the upper portion 29 is screwed, and the ridges 33 are formed on both sides of the slide 32. The upper part 29 is fixed to the lower part 28 by sandwiching.

As shown in FIG. 5, the center of the pedestal 2 is connected to the upper end of the upper portion 29 of the eccentric shaft 27 via a ring ball 36. Since the pedestal 2 is slidably supported in the longitudinal direction and the lateral direction on the gantry 1 as described above, the eccentric shaft 27
When the motor 25 is rotated after the upper part 29 is eccentric to the lower part, the output shaft of the motor 25 is eccentrically rotated.

As shown in FIG. 1, the raising / lowering operation mechanism 8 assembled on the upper portion of the stand 5 is provided with a guide 36 provided on the left side surface of the stand 5 in the figure, and supported by the guide 36 so as to be able to move up and down. Bracket 37 that overhangs table 3
The bracket 37 is moved up and down by rotating a pinion engaged with a rack provided on the right side surface of the bracket 37 with the operation handle 38.

The rotary drive device 7 is supported on the tip of the bracket 37 and includes a motor 39, a speed reducer 40 and an output shaft device 41. As shown in FIG. 7, the output shaft device 41 includes an upper shaft 43 that is rotatably supported by a bracket 37 via a bearing 42, and a lower shaft 44 that is supported by the upper shaft 43 so as to be lifted and lowered within a predetermined range. With upper shaft 43 and lower shaft
A contact pressure adjusting device 45 for adjusting the contact pressure of the platen 6 to the seat surface of the valve body W is interposed between the contact plate 44 and 44. Also, the lower shaft
A connecting mechanism 46 is provided between the lower end of 44 and the surface plate 6.

The connecting mechanism 46 is arranged in a cap-shaped fall prevention lid 47 fixed to the upper surface of the central portion of the surface plate 6 and a concave portion 48 formed in the lower surface of the lid 47, and the lower end of the lower shaft 44. The transmission pin 49 is inserted through the section, and the passive pin 50 is fixed to the surface plate 6 within the rotation region of the transmission pin 49. As shown in the plan view of FIG. 8, a split groove 47a for inserting and removing the transmission pin 49 is formed on the upper surface of the fall prevention lid 47.
The transmission pin 49 inserted from a is inserted into the lower groove 44a from the split groove 47a.
It is designed so that it can be received by the passive pin 50 by rotating 90 ° in the direction of rotation. Therefore, when the surface plate 6 is connected to the output shaft device 41, the surface plate 6 is lifted and the transmission pin 49 supported by the lower shaft 44 is inserted into the recess 48 from the split groove 47a, and then the surface plate 6 is moved. It is sufficient to rotate the surface plate 6 by 90 ° in the direction opposite to the direction of rotation of the lower shaft 44 when the surface plate 6 is removed.

The lower shaft 44 and the surface plate 6 are centered by fitting the lower end of the lower shaft 44 into the core 51 fitted on the upper surface of the surface plate 6. Note that FIG.
As shown in FIG. 3, a protective member 52 made of an elastic material such as a thin plate is adhered to the upper surface of the degree plate table 3 so as not to damage the valve body W placed thereon. A center line or the like that serves as a reference when the valve body W is mounted is written on the protective member 52. Further, a plane clamp fitting for surely fixing the valve body W to the degree plate table 3 is provided if necessary.

Next, the procedure for sliding the seat surface of the valve body W using this apparatus will be described. First, the valve body W taken out from the valve box is temporarily placed with the seat surface to be slid near the center of the degree plate table 3 facing upward. After this, place a spirit level on the seat surface of the valve body W, and while observing the spirit level so that the seat surface is horizontal, operate the angle adjustment handle 23 attached to the pedestal 2 to move the level table. 3 is swung up and down to accurately position the valve body W seat surface horizontally, and the angle fixing means
The degree plate table 2 is fixed at 22 to secure the levelness of the valve body W seat surface.

After that, with the surface plate 6 removed, the handle 38 of the lifting / lowering operation mechanism 8 is operated to lower the rotary drive device 7 so that the center of the seat surface of the valve body W is the shaft of the lower shaft 44. The position of the valve body W is adjusted so that it comes to mind, and the valve body W is fixed to the degree plate table 3 by the plain clamp fittings provided on the degree plate table 3. Once, the output shaft device 40 is raised to fit the fall prevention lid 47 to the lower end portion of the lower shaft 44, and further, the transmission pin 49 is inserted to support the fall prevention lid 47 on the lower end portion of the lower shaft 44. .. However, when the fall prevention lid 47 and the transmission pin 49 are left attached to the lower end of the lower shaft 44, this procedure is omitted.

After the surface plate 6 is positioned below the lower shaft 44,
By operating the handle 38 of the elevating operation mechanism 8 to lower the output shaft device 40 and fitting the lower end of the support shaft 44 into the core 51 fitted on the upper surface of the surface plate 6, the lower shaft 44 and the lower shaft 44 are fixed. Centering with the plate 6, the platen 6 is fixed to the fall prevention lid 47. In addition,
As the surface plate 6, a plate slightly larger than the outer diameter of the seat surface of the valve body W is used.

After the polishing paper specified in the standard specifications is evenly attached to the lower surface of the surface plate 6 in the circumferential direction, the handle 38 of the elevating operation mechanism 8 is operated to lower the rotary drive device 7 and the eccentric drive device. 4 and the rotation driving device 7 are operated, the abrasive paper is rotated while being pressed against the seat surface of the valve body W by the contact pressure set by the contact pressure adjusting device 45 for setting the contact pressure, and the seat of the valve body W is The surface moves back and forth and left and right, and the seat surface of the valve body W is evenly polished.

Table 1 shows the operating conditions of the apparatus in this apparatus. Further, needless to say, the present invention can be applied to a check valve.

[0026]

[Table 1]

[0027]

As described above, according to the present invention,
Place the valve disc in the predetermined position on the degree plate table, position the seat surface of the valve disc horizontally, connect the surface plate of appropriate size with the abrasive paper to the rotary drive, and then eccentric with the rotary drive. By operating the drive device and bringing the surface plate into contact with the seat surface of the valve body with an appropriate contact pressure through the rotary drive device by the lifting operation mechanism, the valve is made of abrasive paper that rotates while eccentrically moving the valve body. The sheet surface of the body can be polished. Therefore, it is not necessary for an operator to move the surface plate so that a uniform surface pressure is applied to the surface of the surface of the valve seat over the entire surface of the valve seat, so that even an operator with low skill can slide the surface of the valve seat by himself.

Further, since one worker can slide the valve seat surface, it is not necessary to connect the workers with each other, and the displacement of the connecting motion causes the surface plate to recoil and be repelled from the seat surface. There is no risk of the worker coming into contact with the rotating surface plate, and the worker does not have to set the surface pressure of the surface plate. There is no risk that the operator will come into contact with the rotating surface plate, and the valve bodies can be safely slid together.

[Brief description of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of an essential part of the present invention.

FIG. 3 is a plan view of the pedestal of the present invention.

FIG. 4 is a front view of a main part of the present invention.

FIG. 5 is a front view of the eccentric drive device of the present invention.

FIG. 6 is a front view and a side view of a main part of the eccentric drive device of the present invention.
It is a side view.

FIG. 7 is a cross-sectional view of a main part of the rotary drive device of the present invention.

8 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 W ... Valve body 1 ... Stand 2 ... Cradle 3 ... Plate table 4 ... Eccentric drive device 5 ... Stand 6 ... Plate 7 ... Rotation drive device 8 ... Lifting operation mechanism 15 ... Bracket 16 ... Bracket 17 ... Spindle 18 ... Bracket 19 ... Screw rod 20 ... Slide 21 ... Arm 22 ... Transmission mechanism 23 ... Handle 52 ... Protective member 45 ... Contact pressure adjusting device 9 ... Wheels

Claims (6)

[Claims] 1. A table-shaped stand, a pedestal slidably supported on one side of the gantry in the front and rear and left and right, and a degree plate supported by the pedestal and having an upper surface inclined at a predetermined angle. A table, an eccentric drive device arranged in the gantry to eccentrically rotate the pedestal, a stand erected on the other side of the gantry, and an eccentric drive device mounted on the upper surface of the valve body placed on the degree plate table. A surface plate which is arranged above the surface plate and which is supported by the stand so as to be able to move up and down, and which suspends the surface plate and rotates the surface plate around its central axis.
A valve disc seat sliding machine, comprising: a platen and a lifting operation mechanism for lifting a rotary drive device. 2. The valve body seat slide according to claim 1, wherein the plate table is supported by a pedestal so as to be able to move up and down, and an angle adjusting mechanism for adjusting an inclination angle of the plate table is provided. Matching machine. 3. The valve body sheet sliding machine according to claim 1 or 2, wherein a protective member made of an elastic body is provided on the upper surface of the degree plate table. 4. The valve body seat sliding machine according to claim 1, 2 or 3, wherein the rotary drive device is provided with a contact pressure adjusting mechanism for adjusting the contact pressure of the surface plate to the valve body. 5. The valve body sheet sliding machine according to claim 1, 2, 3 or 4, wherein the platen is detachably suspended from the rotary drive device. 6. The valve body sheet sliding machine according to claim 1, wherein the gantry has wheels for movement.