JP2006315101A - Attaching/detaching tool for alarm window frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attaching/detaching tool capable of attaching/detaching a window frame to/from an alarm window of a control board with excellent workability and reliability. <P>SOLUTION: The attaching/detaching tool is equipped with a sucker 11 sucking the window frame 3 insertably mounted to the alarm window 2 of the control board 1, a relay member 12 fixing the sucker 11 on the front face, a hollow telescopic connection handle 13 detachably connecting the relay member 12 at the tip end, and an operation string 15 manually deforming the peripheral edge part of the sucker 11. The operation string 15 is derived out from the rear end of the telescopic connection handle 13 from the sucker 11 through the relay member 12 and the telescopic connection handle 13, and the derivation part is pulled by a hand. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an alarm window frame attaching / detaching tool used for manually attaching / detaching a window frame that is detachably attached to an alarm window of a control panel.

  In a central control panel installed in a central control room of a large plant such as a thermal power plant, a large number of alarm windows (lamp display windows) of several hundred or more are installed in a grid pattern. This alarm window blinks and displays the operating status of various equipment in the plant, and blinks many times due to work, inspection, recovery, etc. at various locations. Also, the alarm window is installed with the display surface vertical at a high place in the central control room so that blinking can be easily seen from a distance.

  The alarm window is installed so that it can be easily seen from a distance whether the flashing of the alarm window installed in the central control room is due to work, inspection, or abnormality due to plant failure. The window frame is detachably attached. This window frame is composed of, for example, a resin rectangular frame colored in red, yellow, and green, and a resin transparent window plate fixed to the rectangular frame. A window frame is fitted in a rectangular alarm window provided at the height of the room wall, and the front of the alarm window is covered with a transparent window plate of the window frame. When visually recognizing the flashing alarm window, it is possible to visually recognize whether the flashing alarm window is flashing by looking at the window frame attached to the alarm window, and to prevent false recognition of the flashing alarm window.

Use a special tool with a suction cup attached to the end of a long operation rod to attach the window frame to the alarm window installed at a high position in the central control room or remove the window frame from the alarm window. Or do it manually without using tools. A dedicated tool is known in which a suction cup is attached to the tip of an operation rod having a predetermined length (see, for example, Patent Document 1). The suction cup at the tip of the operation rod, which is this special tool, is pressed against the window frame to attract it, and the operator holds the rear end of the operation rod with his hand and lifts the window frame together with the suction cup to the high alarm window. Fit the absorbed window frame into the alarm window. In this case, the operation rod is bent in the shape of a letter (or a square shape) in the length direction so that the suction cup and the window frame can be attached and detached with high reliability at a high place, and the suction cup peripheral edge An operation thread for deforming the tube is attached, or an air tube for blowing compressed air into the suction cup is connected to the suction cup.
JP 2001-198863 A

  The operation thread in the dedicated tool extends from the suction cup to the rear end of the operation pole, grips the rear end of the operation pole with one hand, and pulls the operation thread with the other hand to move the peripheral edge of the suction cup. It is deformed so that it can be easily separated from the window frame. However, the operability when deforming the suction cup with the operation thread due to the operation thread entangled with the operation rod is poor, and the reliability and reliability of attaching and detaching the window frame is lacking. Moreover, the air tube in the said exclusive tool sends a compressed air to a suction cup so that it may leave | separate easily from a window frame. In this case, compressed air is effective for removing the window frame from the suction cup, but it is not effective for sucking the window frame with the suction cup, and the suction force is not stable.

  In addition, since the operation tool of the dedicated tool is a long rigid rod-like body or rigid tubular body having a predetermined length of a square shape (or a square shape), a large space is required at the storage location. Furthermore, such an operating rod is inconvenient to carry and may cause troubles such as hitting the control panel when it is brought into the central control room from the storage location and used, and damaging the control panel.

  Due to the above-mentioned problems with the dedicated tools, the window frame is currently attached and removed only by hand. However, the work at high places with only human hands takes two people, and the work efficiency is poor. That is, a stepladder is stood in front of the central control panel, and one person holds the stepladder with his / her hand so that the other person does not move. The other person holds the window frame and goes up to the stepladder, and the window frame is fitted into a high alarm window. When removing the window frame from a high-altitude alarm window, it is necessary to use a stepladder with two people. Such a window frame attaching / detaching work by two people has a problem in that workability is poor for manpower, and equipment breakage occurs due to movement of a stepladder or the like.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a practical window frame attaching / detaching tool having good workability and reliability for attaching / detaching a window frame.

  In order to achieve the above object, the present invention achieves the above object by sucking and holding the window frame for the alarm window of the control panel in a detachable manner, a hollow elastic joint having the suction cup installed at the tip, and passing through the hollow of the expansion joint. In addition, the front end portion is anchored to the peripheral portion of the suction cup, and the rear end portion includes an operation cord that is led out from the rear end of the stretchable joint pattern, and the operation cord that is led out from the rear end of the stretchable joint pattern is pulled by hand. An operation is performed to deform the peripheral edge of the suction cup.

  Here, the control panel is a central control panel or the like installed in the central control room of the thermal power plant, and includes a number of alarm windows. The window frame fitted to the alarm window is a lightweight cap part composed of, for example, a resin rectangular frame and a resin transparent window plate fixed to the rectangular frame. The window frame may be applied even if it has a permanent magnet that is attracted to a magnetic body provided on the alarm window side. The sucker that detachably adsorbs the window frame adsorbs and holds the front surface of the transparent window plate of the window frame with negative pressure, and a commercially available rubber sucker or soft elastic plastic sucker can be applied. In addition, the suction cup has a thick mounting seat at the center and a thin elastic deforming portion that expands in an umbrella shape from the mounting seat, and presses the peripheral edge of the elastic deforming portion against the transparent window plate of the window frame. By elastically deforming, a negative pressure is generated between the elastically deforming portion and the transparent window plate to adsorb the transparent window plate. As this suction cup, a suction cup with a tab in which a tab is integrally projected on the outer peripheral surface of the elastic deformation portion can be applied, and an operation string for deforming the elastic deformation portion can be tethered to the tab.

  In addition, the stretchable joint pattern with the suction cup fixed to the tip can be applied in a manner that the total length can be adjusted stepwise by connecting two or three lightweight straight tubular pipe patterns of different large and small diameters in a stretched manner. The stretchable joint has a hollow structure over its entire length, and one or several bundles of operation cords penetrate the inner space of the hollow stretchable joint from the suction cup at the tip. Nylon tegus such as fishing line can be applied to the operation string. An operation string is led out from the rear end of the stretch joint, and cut at an appropriate length, and a detent such as a knot is formed at the cut end. The rear end portion of the stretchable joint pattern is a portion that the worker holds with one hand, and pulls the operation string led out from the rear end with one hand.

  In the present invention, it is possible to connect a relay member having a fixed type of crack structure to the tip of the stretchable joint pattern, attach a suction cup to the relay member, and allow the operation string to be inserted.

  Here, the fixed-type cracking structure is the same structure as that used for painting a flat and smooth surface. The relay member of the fixed-type cracking structure consists of a cylindrical handle and a tip of the handle. A flat work plate portion fixed at a predetermined inclination angle is provided. The cylindrical handle is connected to the tip of the expansion joint by screwing or insertion, and the suction seat mounting seat is attached to the front center of the flat work plate. An operation string from the suction cup passes through the work plate portion of the relay member, passes through the cylindrical handle portion, and is inserted into the hollow of the expansion joint.

  In the present invention, the suction cup is a powerful suction cup provided with a forcible deformation member that pulls the central portion (mounting seat portion) of the suction cup to deform the suction cup peripheral portion (elastic deformation portion peripheral portion) in the article suction direction. And the operation strip which operates the forced deformation member of this strong suction cup manually can be attached to the operation string which manually deforms the suction cup itself, and the expansion joint can be penetrated.

  The strong suction cup here is commonly called a strong suction cup.If the suction cup has a shape in which the elastic deformation part is expanded from the central mounting seat part into an umbrella shape, the outer side of the mounting seat part and the elastic deformation part will be A forced deformation member having a cam member and a suction cup presser is installed. When the suction cup is attracted to the window frame, the forced deformation member's suction cup presses the vicinity of the peripheral edge of the elastically deformed part, and the cam member in the upright state is pulled down by the operating strip. The part is pulled strongly against the peripheral part to create a strong vacuum between the window frame and strongly adsorb the window frame. A commercial item can be applied to such a strong suction cup. As the operation strip for operating the strong suction cup, a string and a thread similar to the operation string for directly operating the peripheral portion of the suction cup can be applied. Both the operation strip and the operation string are led out from the rear end of the expansion joint, and a one-hand operation is performed such that the string is pulled by the derived part. Therefore, it is desirable that the derived portion is color-coded or has a mark or the like so that it can be seen at a glance whether it is an operation strip or an operation string.

  According to the present invention, the sucker is elastically deformed by operating the operation cord from the suction cup at the tip of the expansion joint through the hollow of the expansion joint and pulling the operation cord derived from the rear end of the expansion joint. Therefore, the operability when pulling the operation string becomes stable and good, and an excellent effect can be obtained in that the suction cup is accurately deformed to improve the window frame attaching / detaching work. In addition, the expansion joint pattern can be shortened for storage and transportation, the storage space for the alarm window frame attaching / detaching tool can be reduced, and equipment damage during transportation can be reduced.

  In addition, using a strong suction cup as the suction cup and deforming the strong suction cup to increase the suction power, and penetrating through the hollow of the expansion joint, the suction force of the suction cup that sucks the window frame can be operated with one hand. Even if the window frame is increased in size and weight, it can be stably attached to and detached from the alarm window, and the reliability of the alarm window frame attaching / detaching tool is increased.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  The alarm window frame attaching / detaching tool 10 according to the first embodiment shown in FIGS. 1 (A) and 1 (B) and FIG. 2 includes a suction cup 11 that sucks the window frame 3 fitted in the alarm window 2 of the control panel 1 and attached thereto. A relay member 12 having the suction cup 11 fixed to the front surface and a hollow elastic joint pattern 13 having the relay member 12 removably connected to the tip are provided. One end of one operating string 15 is tethered to the suction cup 11. The operation string 15 penetrates the relay member 12 and the expansion joint 13 from the suction cup 11 and is led out from the rear end of the expansion joint 13.

  The window frame 3 shown in FIG. 1 (B) has a resin-made rectangular frame 3a and a resin-made transparent window plate 3b having a peripheral edge fixed to the rectangular frame 3a. A front center portion of the transparent window plate 3b indicated by a chain line in FIG. 1B is appropriately adsorbed by a circular suction cup 11. The suction cup 11 is a commercially available product made of rubber or soft resin, and has an umbrella-shaped elastic deformation portion 11a that directly adsorbs the window frame 3a with negative pressure, and a thick attachment that is integral with the central portion of the elastic deformation portion 11a. It has a seat 11b. The suction cup 11 is a suction cup with a tab, and integrally has a tab 11c on the outer peripheral surface of the elastic deformation portion 11a.

  The relay member 12 has a fixed iron-back structure, and includes a rectangular work plate portion 12a having a flat front surface and a cylindrical handle portion 12b extending rearward from the center of the rear surface of the work plate portion 12a at a predetermined inclination angle. A mounting seat 11b of the suction cup 11 is fixed or detachably connected to the center of the front surface of the work plate 12a by a binding band (cable tie) or the like. A string insertion hole (not shown) is passed through a part of the work plate portion 12a in the thickness direction, and the operation string 15 is inserted through the string insertion hole and the cylindrical handle portion 12b. As the relay member 12 having such a fixed type of crack structure, a part of a commercially available coating crack can be applied.

  The stretchable joint pattern 13 is formed by connecting two lightweight straight tubular pipe patterns 13a and 13b having different diameters in an extended manner. A grip 13c is fixed to the rear end portion of the large-diameter pipe handle 13a. As shown in FIG. 2, almost the entire length of the small-diameter pipe handle 13 b is accommodated in the large-diameter pipe handle 13 a, and the expansion joint 13 is reduced to the minimum length, and the window frame attaching / detaching tool 10 is stored at this length. And transportation. By pulling out the small-diameter pipe handle 13b from the large-diameter pipe handle 13a and fixing both pipe handles 13a and 13b in the opposite directions to the length shown in FIG. 1, the stretchable joint pattern 13 has the maximum length. The window frame is attached and detached at this length. The handle portion 12b of the relay member 12 is coaxially connected to the distal end portion of the small-diameter pipe handle 13b. This connection may be performed by screwing the end of the handle 12b into the tip of the pipe handle 12b.

  Manufacturing and assembling of the alarm window frame attaching / detaching tool 10 may be performed as shown in FIG. When the elastic joint pattern 13 and the relay member 12 are in separate states, the operation string 15 is inserted into the shortened elastic joint pattern 13 using the wire 17. The wire 17 is made of a shape memory alloy, and the operating string 15 is tethered to one end and inserted into the pipe handle 13a from the other end. A small hole is formed by a drill at the rear end of the grip portion 13c, the wire 17 is passed through the small hole, and then the operation string 15 is passed. When the wire 17 and the operating string 15 are passed through the hollow of the elastic joint 13, the wire 17 is then passed through the hollow of the cylindrical handle portion 12b of the relay member 12, and further, a small hole formed in the work plate portion 12a by a drill. Then, the operation string 15 is penetrated. The distal end portion of the operation string 15 penetrating the work plate portion 12 a is removed from the wire 17 and is tethered to the tab 11 c of the suction cup 11. The handle portion 12b of the relay member 12 and the pipe handle 13b of the expansion joint 13 are connected, the expansion joint 13 is extended to the maximum length, and the operation string 15 is led out from the rear end of the expansion joint 13 and led out. The operating string 15 is pulled to determine the required length of the lead-out portion, cut from the required length, and a detent 18 such as a knot is formed at the required length.

  The alarm window frame attaching / detaching tool 10 of the above embodiment is used as follows. At the time of storage and transportation, the stretchable joint pattern 13 is set to the minimum length. By doing so, the storage space can be reduced, and the carrying with one hand is convenient, and the occurrence of trouble that damages the equipment due to the peripheral equipment is reduced. After transporting to the work site for attaching and detaching the window frame, the stretchable joint pattern 13 is extended to a predetermined maximum length, and the window frame 3 is pressed against the suction cup 11 at the tip to be adsorbed. As shown in FIG. 1 (A), the elastic joint pattern 13 is held in the hand and is raised obliquely, and the suction cup 11 and the window frame 3 adsorbed to the suction cup 11 are in front of one desired alarm window 2 of the control panel 1. increase. In the state of FIG. 1A, the window frame 3 adsorbed by the suction cup 11 assumes a substantially vertical posture and faces the vertical surface of the alarm window 2 substantially in parallel. Further, the angle formed by the work plate portion 12a and the handle portion 12b of the relay member 12 is determined so that the window frame 3 and the alarm window 2 face each other substantially in parallel. By securing this angle with the relay member 12, the stretchable joint pattern 13 can be applied with a linear operation pattern over its entire length, and because it is a straight pattern, it becomes an easily expandable operation pattern, which is less bulky than a fold-shaped operation handle, The operation pattern is convenient for handling. In the state of FIG. 1 (A), when the elastic joint 13 is moved and moved forward as it is, the window frame 3 adsorbed by the suction cup 11 moves in parallel to the corresponding alarm window 2 to move to the alarm window. 2 is fitted.

  When the window frame 3 is fitted into the alarm window 2, when the operating string 15 hanging from the rear end of the elastic joint 13 is pulled down with one hand having the elastic joint 13 and another hand, the elastic deformation portion 11a of the suction cup 11 is pulled down. A part of the peripheral edge is deformed by the tensile force of the operating string 15 so that air enters the negative pressure space between the suction cup 11 and the window frame 3, and becomes positive pressure so that the suction cup 11 can be easily separated from the window frame 3. Become. Therefore, even if the suction cup 11 is separated from the window frame 3 by the stretchable joint 13, the window frame 3 remains in a normal posture on the alarm window 2 and there is no fear of dropping off. When the window frame 3 is removed from the alarm window 2, the suction cup 11 may be pressed against the window frame 3 by the expansion joint 13 to be sucked and moved to the front as it is.

  Next, another embodiment will be described with reference to FIG. The suction cup 11 shown in FIG. 3 is a powerful suction cup, and a forced deformation member 20 having a lever-type cam member 22 and a suction cup presser 21 is attached to the outer surface of the mounting seat portion 11a and the elastic deformation portion 11a. The suction cup presser 21 is commonly called Owan, and is attached to the vicinity of the peripheral edge of the outer surface of the elastic deformation portion 11a to press the elastic deformation portion 11a. The cam member 22 is integrally provided with a lever portion 23, and when the lever portion 23 is moved down, the cam member 22 operates to pull up the mounting seat portion 11a with respect to the elastic deformation portion 11a. That is, if the elastic member 11a is pressed against and attracted to the window frame 3 and the cam member 22 performs the above-described operation with the suction cup holder 21 holding the vicinity of the peripheral edge of the elastic member 11a, the center of the elastic member 11a is The portion is pulled strongly against the peripheral edge, creating a strong vacuum with the window frame 3, and strongly adsorbing the window frame 3.

  The embodiment shown in FIG. 3 is additionally equipped with an operating strip 16 for manually operating the forced deformation member 20 of the strong suction cup 11. The operation strip 16 is a string similar to the operation string 15, and the tip is anchored to the lever portion 23 of the forced deformation member 20. Both the operation strip 16 and the operation string 15 are inserted into the relay member 12, penetrate the hollow of the stretchable joint 13, and are led out from the rear end of the stretchable joint 13. The operating strip 16 led out from the rear end of the stretch joint 13 is cut to a desired length to form a detent 19. The detent 19 and the detent 18 of the operation string 15 can be used to identify both strings.

  When the suction cup 11 is pressed against the window frame 3 and attracted, if the operation strip 16 led out from the rear end of the stretchable joint 13 is pulled with one hand, the force of sucking the window frame 3 of the suction cup 11 increases and increases. The adsorption force is maintained as it is. When the window frame 3 sucked by the suction cup 11 is fitted into the alarm window 2 and the operation string 15 is pulled, the peripheral portion of the suction cup 11 is deformed and the suction force is reduced to leave the window frame 3. When the next window frame 3 is attracted to the suction cup 11, the forced deformation member 20 of the strong suction cup 11 is manually returned to the original state. This undoing operation can be easily and quickly performed with a single finger one-touch operation.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

(A) is the side view at the time of use which shows embodiment of the alarm window frame attachment / detachment tool which concerns on this invention, (B) is a perspective view of a window frame. It is an exploded view at the time of the assembly of the alarm window frame attaching / detaching tool of FIG. It is a side view of the suction cup part of the alarm window frame installation tool for demonstrating other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control panel 2 Alarm window 3 Window frame 3a Rectangular frame 3b Transparent window board 10 Alarm window frame attaching / detaching tool 11 Suction cup 11a Elastic deformation part 11b Mounting seat part 12 Relay member 12a Work plate part 12b Handle part 13 Expansion joint 13a Pipe pattern 13b Pipe handle 15 Operation string 16 Operation strip 20 Forced deformation member

Claims (3)

A suction cup that detachably adsorbs and holds the alarm window window frame of the control panel, a hollow elastic joint pattern installed at the tip of the suction cup, and a hollow portion of the expansion joint pattern that penetrates the distal end of the suction cup. An operation string that is tethered to the rear end portion of the elastic joint pattern and that is led out from the rear end,
An alarm window frame attaching / detaching tool, wherein the peripheral portion of the suction cup is deformed by manually pulling the operation string led out from a rear end of the expansion joint.   The alarm window frame attaching / detaching tool according to claim 1, wherein a relay member having a fixed type of cracking structure is connected to the tip of the expansion joint, the suction cup is attached to the relay member, and the operation string is inserted.   The suction cup is a strong suction cup provided with a forcible deformation member that pulls the central portion of the suction cup to deform the suction cup peripheral portion in the article suction direction, and an operation condition for manually operating the forced deformation member of the strong suction cup. The alarm window frame attaching / detaching tool according to claim 1, wherein a body is attached to the operation string to penetrate the hollow of the stretchable joint pattern.

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