JP6579722B1 - Liquid level sensor inspection instrument - Google Patents

Abstract

Provided is a liquid level sensor inspection instrument that can simplify the structure and easily inspect a liquid level sensor. A liquid level sensor inspection instrument 1 rotates a liquid level sensor 2 installed in a liquid tank in a certain direction to check on / off operation of an internal switch. The liquid level sensor inspection instrument 1 is provided at one end of a long handle portion 3 and is provided with a rotating member 4 that rotates in a predetermined direction and at a predetermined angle or more, and a liquid level sensor provided on the rotating member 4. 2 and an operating member 6 that is provided at the other end of the handle portion 3 and operates to rotate the rotating member 4. [Selection] Figure 1

Description

  The present invention relates to a liquid level sensor inspection instrument for checking a liquid level sensor that detects a liquid level in a liquid tank such as a miscellaneous drainage tank.

  In general, a sensor for detecting a water level as a liquid level includes, for example, a level regulator. This level regulator is suspended in the air in the vertical direction. When the water level in the aquarium rises and reaches the level regulator, the level regulator tilts in a certain direction, and the internal switch is turned on or off by this operation. Detect the surface. And even if a water level rises, a level regulator is immersed in water, inclining to a fixed position, and does not float on a liquid level.

  The level regulator must be regularly inspected to check whether the internal switch is correctly turned on or off. In this case, conventionally, the level regulator can be easily inspected if it is arranged in a range that can be reached by an operator through the manhole.

  However, if the level regulator is placed within the reach of the worker through the manhole, after all the water in the water tank has been drained, the worker enters the water tank and holds the level regulator to keep it constant. The internal switch is checked for on / off operation by tilting in the direction of.

  Further, when the level regulator is arranged in such a range that the worker cannot reach, for example, the magic hand described in Patent Document 1 is used to check the worker without entering the water tank. It is also possible.

Utility Model Registration No. 3209352

  However, the conventional magic hand can grip the object to be gripped from both the left and right sides, but cannot cope with the one that operates by tilting in a certain direction like the level regulator. For this reason, the operator needs to tilt the magic hand body by rotating the magic hand body at the same time as holding the level regulator with the magic hand.

  As a result, the conventional magic hand has a problem that the inspection work is troublesome and the workability is extremely poor. In addition, the conventional magic hand has a problem that the number of parts is large and the structure is complicated.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid level sensor inspection instrument that can simplify the structure and easily inspect the liquid level sensor.

  In order to achieve such an object, the invention described in claim 1 is directed to a liquid level sensor inspection in which the liquid level sensor installed in the liquid tank is rotated in a certain direction to check the on / off operation of the internal switch. A rotating member that is provided at one end of a long handle and is rotated in a predetermined direction and at a predetermined angle or more, and a holding member that is provided on the rotating member and holds the liquid level sensor. It is provided with the member and the operation member which is provided in the other end of the said pattern part, and operates rotation of the said rotation member.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the operation member includes a first gripping unit that operates the rotating member to be rotatable, and the first gripping unit. And a second grip part that operates to hold the holding member.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the holding member has an open / close member configured to be openable and closable, and the liquid member is closed when the open / close member is closed. A position sensor is held.

  According to a fourth aspect of the present invention, in addition to the configuration according to the first aspect, the holding member houses the liquid level sensor so that the liquid level sensor can be taken in and out, and the liquid level sensor is in the predetermined direction and the predetermined direction. A storage recess that holds rotation up to an angle or more is formed.

  According to the first aspect of the present invention, the liquid level sensor is held by the holding member provided on the rotating member, and the rotating member is operated by the operating member to rotate in a certain direction and a predetermined angle or more. Thus, since the on / off operation of the switch of the liquid level sensor is inspected, the structure can be simplified and the liquid level sensor can be easily inspected.

  According to the second aspect of the present invention, the operating member is installed adjacent to the first gripping portion for operating the rotating member so as to be rotatable, and the holding member is attached to the first gripping portion. A second gripper that is operated so as to be able to be held, so that the second gripper can be operated to hold the holding member, and the first gripping member adjacent to the second gripper can be rotated. By operating so as to rotate, the usability is improved and the operability can be improved.

  According to the third aspect of the present invention, the holding member has an opening / closing member configured to be openable and closable, and the liquid level sensor is held by holding the liquid level sensor when the opening / closing member is closed. It becomes possible to hold it securely.

  According to a fourth aspect of the present invention, the holding member stores the liquid level sensor so that the liquid level sensor can be taken in and out, and a storage recess that holds the liquid level sensor in a fixed direction and rotates up to a predetermined angle is formed. Therefore, the liquid level sensor can be held without providing an opening / closing mechanism. As a result, the structure can be further simplified.

It is a schematic block diagram which shows the liquid level sensor inspection instrument which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the state in which the holding member of FIG. 1 accommodates a liquid level sensor. It is a block diagram which shows the rotation roller before rotating the rotation member of FIG. It is a block diagram which shows the rotation roller after rotating the rotation member of FIG. It is a partial section lineblock diagram showing the state where the operation member of the liquid level sensor inspection instrument concerning a 2nd embodiment of the present invention and the opening-and-closing member of a holding member opened. FIG. 6 is a partial cross-sectional configuration diagram illustrating a state in which an opening / closing member of the holding member in FIG. 5 is closed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
1 to 4 show a first embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing a liquid level sensor inspection instrument according to the first embodiment of the present invention. FIG. 2 is an explanatory view showing a state in which the holding member of FIG. 1 houses the liquid level sensor. FIG. 3 is a configuration diagram illustrating a rotation roller before the rotation member of FIG. 1 is rotated. FIG. 4 is a configuration diagram illustrating the rotation roller after the rotation member of FIG. 1 is rotated.

  In the following embodiments, the direction in which the holding member is installed will be referred to as the front end direction, and the direction in which the operation member is installed will be described as the rear end direction. In the following embodiments, an example in which the liquid level sensor is applied to a water level sensor and a level regulator is used as the water level sensor will be described.

  The water level sensor inspection instrument 1 according to this embodiment is configured to turn on / off an internal switch by rotating the water level sensor 2 shown in FIG. 2 installed in a water tank (not shown) in a certain direction by a predetermined angle or more, for example, 100 degrees or more. Is to check. When the water level in the water tank becomes equal to or higher than the predetermined water level, the water level sensor 2 detects that effect by rotating in a certain direction by buoyancy and turning on or off the internal switch.

  As shown in FIG. 1, the water level sensor inspection instrument 1 includes a long handle portion 3, a rotating member 4 provided at one end of the handle portion 3, and the rotating member 4 provided with the water level sensor 2. The holding member 5 to hold | maintain and the operation member 6 which is provided in the other end of the handle | pattern part 3 and operates rotation of the rotation member 4 are provided.

  As shown in FIG. 1, the long handle 3 is a cylindrical pipe made of metal or synthetic resin having a length of about 1.5 to 2.0 m, for example. The handle 3 may have a telescopic structure that can be expanded and contracted. An operation wire 7 is provided in the handle portion 3 along the length direction. One end of the operation wire 7 is locked to the tip of the rotation pipe 12 of the rotation member 4, and the other end of the operation wire 7 is fixed to a grip portion (first grip portion) 6 a of the operation member 6. Yes.

  A coil spring 8 as an elastic member is attached between the vicinity of one end (tip) of the handle 3 and the rotating pipe 12 of the rotating member 4 as shown in FIG. The coil spring 8 gives an elastic force to the handle portion 3 so that the rotating pipe 12 of the rotating member 4 is positioned on the same straight line.

  The rotating member 4 rotates the holding member 5 in a certain direction and at a predetermined angle or more, for example, 100 degrees or more in this embodiment. Specifically, as shown in FIG. 3, the rotation member 4 is pivotally supported at one end of the handle portion 3 so as to be rotatable, and a rotation roller in which a cutout portion 10 a is formed by cutting out a part of the outer periphery. 10, the engaging member 11 that is engaged with the notch 10 a of the rotating roller 10 and fixed at a predetermined position of the operation wire 7, and the rotating roller 10 is rotated to be connected to one end of the handle 3. And the above-described rotating pipe 12 that rotates relative to the rotating pipe 12. The rotating pipe 12 is formed of the same material as the handle 3 and has the same diameter, and is bent so that the water level sensor 2 can be easily held from below by the holding member 5.

  Therefore, in this embodiment, when the worker grips the grip portion 6a of the operation member 6, the operation wire 7 is pulled, and the engagement member 11 rotates the rotation roller 10 to a predetermined angle. When the rotating roller 10 is rotated, the rotating pipe 12 is configured to rotate at a predetermined angle.

  As shown in FIG. 1, the holding member 5 is installed at the tip of the rotating pipe 12 of the rotating member 4 and stores the water level sensor 2 so that it can be taken in and out. Specifically, as shown in FIG. 2, the holding member 5 is formed, for example, in the shape of an inflated bowl by a metal mesh, and the inner diameter D <b> 1 of the opening end thereof is formed slightly larger than the outer diameter D <b> 2 of the water level sensor 2. Since the holding member 5 is formed in the shape of an inflated bowl, a storage recess 13 is formed on the inner peripheral surface.

  The water level sensor 2 of the present embodiment is formed in a spindle shape. Therefore, when the water level sensor 2 is stored in the holding member 5, the water level sensor 2 enters the storage recess 13. As a result, the holding member 5 can hold the water level sensor 2 rotating in a certain direction to a predetermined angle or more.

  The operation member 6 includes the grip portion 6a for a worker to grip. When the operator grips the grip portion 6a and pulls the operation wire 7, the engaging member 11 rotates the rotating roller 10 to rotate the rotating pipe 12 to a predetermined angle.

  Next, the operation of this embodiment will be described.

  In order to check the on / off operation of the water level sensor 2, first, the worker holds the water level sensor inspection instrument 1 in his hand and stores the water level sensor 2 in the holding member 5 as shown in FIG. 2. In this case, the water level sensor 2 enters the storage recess 13 of the holding member 5.

  Then, the operator grasps the grasping portion 6a of the operation member 6, whereby the operation wire 7 is pulled from the state of FIG. 3, and the engagement member 11 brings the rotation roller 10 to a predetermined angle as shown in FIG. Rotate. Then, the rotating roller 10 rotates to rotate the rotating pipe 12 against the elastic force of the coil spring 8.

  At that time, since the water level sensor 2 has entered the housing recess 13 of the holding member 5, the holding member 5 rotates the water level sensor 2 in a fixed direction at a predetermined angle or more, for example, an angle of 100 degrees or more. Also, the stored state is held. Thus, by tilting the water level sensor 2 in a fixed direction, for example, 100 degrees or more, the operation state of the water level sensor 2 can be inspected by detecting whether the internal switch is on or off.

  Thereafter, if the worker does not grip the grip portion 6 a of the operation member 6, the rotating pipe 12 is rotated by the elastic force of the coil spring 8 and returns so as to be positioned on the same straight line with respect to the handle portion 3. .

  Next, the worker holds the water level sensor inspection instrument 1 in his hand and removes the inspected water level sensor 2 from the holding member 5. Then, after the inspection of one water level sensor 2 is completed, a number of water level sensors 2 can be inspected sequentially by repeating the series of operations as described above.

  As described above, according to the present embodiment, the water level sensor 2 is held by the holding member 5 provided on the rotating member 4, and the rotating member 4 is operated by the operation member 6 to be in a predetermined direction and at a predetermined angle or more. By turning, the on / off operation of the switch of the water level sensor 2 is inspected, so that the structure is simplified and the water level sensor 2 can be easily inspected.

  Further, according to the present embodiment, the holding member 5 accommodates the water level sensor 2 so that the water level sensor 2 can be taken in and out, and is formed with a storage recess 13 that holds the water level sensor 2 in a certain direction and rotates up to a predetermined angle or more. Therefore, the water level sensor 2 can be held without providing an opening / closing mechanism for holding the water level sensor 2. As a result, the structure can be further simplified.

  Furthermore, according to the present embodiment, since the holding member 5 is configured by a wire mesh, it is possible to easily visually confirm whether the water level sensor 2 is held by the holding member 5.

  In the present embodiment, although not shown, by attaching a light or a CCD camera to the distal end side of the rotating pipe 12, the water level sensor 2 can be easily confirmed, and the inspection work is further facilitated.

[Second Embodiment]
FIG. 5 is a partial cross-sectional configuration diagram illustrating a state in which the operation member and the opening / closing member of the holding member of the liquid level sensor inspection instrument according to the second embodiment of the present invention are opened. FIG. 6 is a partial cross-sectional configuration diagram illustrating a state in which the opening and closing member of the holding member in FIG. 5 is closed.

  Note that the same portions as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted, and different configurations and operations will be described.

  In the present embodiment, the configuration and operation of the holding member are mainly different from those in the first embodiment. Specifically, as shown in FIG. 5, the holding member 15 of the present embodiment is supported by a base plate portion 16 and pivotally supported at both base ends of the base plate portion 16 by connecting pins. Opening and closing members 17, 17 formed in a substantially bowl shape and configured to be openable / closable, coil springs 18, 18 for applying elastic force to open the opening / closing members 17, 17, and opening / closing members 17, 17 are opened / closed. A link mechanism 20.

  As shown in FIGS. 5 and 6, the link mechanism 20 has one end (lower end) connected to the tip of the operation wire 9 and movable up and down, and the other end (upper end) of the vertical drive link 21. Opening and closing drive links 22, 22 each having one end pivotally supported by a connecting pin. The other ends of the open / close drive links 22 are supported on the inner surfaces of the open / close members 17 and 17 by connecting pins.

  The other end of the operation wire 9 is connected to a gripping portion 6 b as a second gripping portion of the operation member 6 through the handle portion 3 through the rotating pipe 12. This gripping part 6b is installed adjacent to the gripping part 6a as the first gripping part for operating the turning of the turning member 4.

  Therefore, when the holding portion 6 a of the operation member 6 is gripped and the operation wire 9 is pulled to lower the vertical drive link 21, the open / close drive links 22, 22 are pulled and the open / close members 17, 17 are subjected to the elastic force of the coil spring 18. Move in the direction to close against. As a result, the opening / closing members 17 and 17 can hold the water level sensor 2.

  In the present embodiment, by gripping the grip portion 6 b of the operation member 6, the operation wire 9 is pulled, and the opening / closing members 17 and 17 of the holding member 15 are closed to hold the water level sensor 2. Then, by grasping the grasping portion 6a of the operation member 6 while grasping the grasping portion 6b of the operation member 6, the operation wire 7 is pulled, and the rotating member 4 is operated to be in a certain direction at a predetermined angle or more. It is comprised so that it may rotate. In this case, since the gripping part 6a and the gripping part 6b are arranged adjacent to each other, it is possible to easily operate.

  Next, the operation of this embodiment will be described.

  In order to check the on / off operation of the water level sensor 2, first, the operator holds the water level sensor inspection tool 1 in his / her hand and holds the holding part 6 b of the operation member 6, thereby pulling the operation wire 9. In this case, the open / close members 17 and 17 are closed against the elastic force of the coil spring 18 to hold the water level sensor 2.

  Further, when the worker holds the holding portion 6b and holds the holding portion 6a of the operation member 6, the operation wire 7 is pulled from the state shown in FIG. 3, and the engaging member 11 is moved as shown in FIG. The rotation roller 10 is rotated at a predetermined angle. Then, the rotating roller 10 rotates to rotate the rotating pipe 12 against the elastic force of the coil spring 8.

  At that time, since the water level sensor 2 is held by the opening and closing members 17 and 17 of the holding member 5, the holding member 15 rotates the water level sensor 2 at a predetermined direction at a predetermined angle or more, for example, an angle of 100 degrees or more. Will hold you. Thus, by tilting the water level sensor 2 in a fixed direction, for example, 100 degrees or more, the operation state of the water level sensor 2 can be inspected by detecting whether the internal switch is on or off.

  Thereafter, if the worker does not grip the grip portion 6 a of the operation member 6, the rotating pipe 12 is rotated by the elastic force of the coil spring 8 and returns so as to be positioned on the same straight line with respect to the handle portion 3. . If the worker does not grip the grip portion 6 b of the operation member 6, the opening / closing members 17 and 17 are opened by the elastic force of the coil spring 18, and the water level sensor 2 is detached from the holding member 15. After the inspection of one water level sensor 2 is completed, a number of water level sensors 2 can be inspected sequentially by repeating the series of operations as described above.

  As described above, according to the present embodiment, the operation member 6 is disposed adjacent to the gripping portion 6a for operating the rotating member 4 so as to be rotatable, and is operated so as to be able to hold the holding member 15. The holding member 15 is operated so that the holding member 15 holds the water level sensor 2 and the rotation member 4 is rotated by the holding member 6a adjacent to the holding portion 6b. By operating, usability is improved and operability can be improved.

  In addition, according to the present embodiment, the holding member 15 has the opening and closing members 17 and 17 configured to be openable and closable, and the water level sensor 2 is gripped when the opening and closing members 17 and 17 are closed, thereby It becomes possible to hold the sensor 2 reliably. As a result, reliability can be improved. Other configurations and operations are the same as those in the first embodiment, and thus description thereof is omitted.

[Other embodiments]
Although the embodiments of the present invention have been described, these embodiments are presented as examples, and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof in the same manner as included in the scope and gist of the invention.

  For example, in each of the above-described embodiments, the example in which the water level sensor 2 is formed in a spindle shape has been described. However, the present invention is not limited to this, and other shapes may be used. In the first embodiment, the storage recess 13 of the holding member 5 is formed corresponding to the spindle-shaped water level sensor 2, but the shape of the storage recess 13 may be changed as appropriate according to the outer shape of the water level sensor 2. Good. In short, the storage recess 13 of the holding member 5 may have a shape that prevents the water level sensor 2 from being detached from the holding member 5 when the water level sensor 2 is stored and tilted by a predetermined angle or more.

  Moreover, although each said embodiment demonstrated the example which used the coil springs 8 and 18 as an elastic member, it is not limited to this, For example, you may use other elastic members, such as a leaf | plate spring and rubber | gum.

  Furthermore, in each said embodiment, although the example which checks the water level sensor 2 which detects the water level of a water tank was demonstrated, even when checking the liquid level sensor which detects the liquid level of other liquids other than this, it is not restricted to this. Applicable.

1 Water level sensor inspection device (Liquid level sensor inspection device)
2 Water level sensor (liquid level sensor)
3 Handle 4 Rotating member 5 Holding member 6 Operating member 6a Holding part 6b Holding part 7 Operating wire 8 Coil spring (elastic member)
9 Operation wire 10 Rotating roller 10a Notch portion 11 Engaging member 12 Rotating pipe 13 Storage recess 15 Holding member 16 Substrate portion 17 Opening / closing member 18 Coil spring (elastic member)
20 Link mechanism 21 Vertical drive link 22 Open / close drive link

Claims (4)

A liquid level sensor inspection device that checks the on / off operation of an internal switch by rotating a liquid level sensor installed in a liquid tank in a certain direction,
A rotating member that is provided at one end of the long handle, and rotates in a predetermined direction and more than a predetermined angle;
A holding member provided on the rotating member to hold the liquid level sensor;
An operation member that is provided at the other end of the handle and operates to rotate the rotation member;
A liquid level sensor inspection instrument comprising:   The operating member includes a first gripping unit that operates the pivoting member so as to be rotatable, and a second gripping unit that is disposed adjacent to the first gripping unit and that operates the holding member so as to be held. The liquid level sensor inspection device according to claim 1, wherein   3. The liquid level sensor inspection device according to claim 1, wherein the holding member has an open / close member configured to be openable and closable, and holds the liquid level sensor when the open / close member is closed. .   The holding member stores the liquid level sensor so that the liquid level sensor can be taken in and out, and is formed with a storage recess that holds the liquid level sensor in the fixed direction and is rotated up to the predetermined angle or more. The liquid level sensor inspection instrument according to claim 1.

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