Attachment / detachment jig

Abstract

To achieve reduction of an operation load and shortening of an operation time concerning an operation of attaching / detaching a sensor using a support rod.SOLUTION: An attaching / detaching tool includes: a support rod to be operated by an operator holding one end of the support rod; and a jig body part attached to an end part on the other side of the one end held by the operator and having a pawl part capable of holding a sensor body. The attaching / detaching tool is used in an operation of attaching / detaching the sensor body to / from a sensor base attached to an arrangement surface, and also includes a balloon which is attached to the support rod so as to be positioned on an operator side of the jig body part and stores gas with a lighter specific gravity than air. Thereby, the attaching / detaching tool can substantially reduce weight of the support rod for the operator to operate the support rod.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an attachment / detachment tool used to attach and detach the detector body to a detector base that is attached directly to the installation surface when attaching and detaching a fire detector (hereinafter referred to as a detector) that is installed on an installation surface such as a ceiling. [Background technology]

[0002] For example, there is a tool for remotely replacing smoke detectors installed in cells at facilities that handle radioactive materials such as nuclear fuel (see, for example, Patent Document 1). By remotely operating such a tool, it is possible to reduce the risk of workers being exposed to radiation.

[0003] However, when performing maintenance and inspection of detectors installed in ordinary facilities that do not handle radiation, it is common for workers to manually remove the detector body from the detector base before carrying out the inspection work.

[0004] In other words, the remotely operable jig disclosed in Patent Document 1 is unsuitable for inspection work in ordinary facilities due to its cost and size, and inspection work is carried out by manual operation by an operator.

[0005] To manually attach or detach the detector body from a detector installed in a high place such as a ceiling, a detachment tool with a detacher attached to the end of a support rod is generally used. The detacher has a cup-shaped shape that covers the detector, and when removing the detector body from the detector base attached to the installation surface, the worker holds the other end of the support rod, fits the claw at the end of the detacher into a slit in the detector body to hold it in place, and then rotates the support rod in a twisting motion. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3510191 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the conventional techniques have the following problems. When holding the detector body with the detacher, the worker needs to align the claw portion at the tip of the detacher with the slit provided in the detector body.

[0008] Therefore, when the detector is installed in a high place, for example, on a ceiling surface 5 to 10 meters away from the worker, the support rod becomes long, making it difficult to align the detector with the support rod. Furthermore, when the detector is operated by holding the other end of the support rod with the detachable device attached at one end, the heavy weight increases the worker's workload and also increases the working time.

[0009] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an attachment / detachment jig that can reduce the workload and shorten the work time when attaching and detaching the sensor main body using a support rod. [Means for solving the problem]

[0010] The attachment / detachment jig of the present disclosure comprises a support rod that is held at one end by an operator and a jig main body portion that is attached to the other end of the jig and has a claw portion that can hold the sensor main body, and is used when attaching or detaching the sensor main body to a sensor base attached to an installation surface, and is attached to the support rod so as to be positioned closer to the operator than the jig main body portion, and further comprises a balloon containing a gas with a specific gravity less than that of air. [Effects of the Invention]

[0011] According to the present disclosure, an attachment / detachment jig can be obtained that can reduce the workload and shorten the work time when attaching or detaching a sensor main body using a support rod. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating an overall configuration of an attachment / detachment jig according to a first embodiment of the present disclosure. [Figure 2] 10 is a diagram illustrating an overall configuration of an attachment / detachment jig according to a second embodiment of the present disclosure. FIG. [Figure 3] FIG. 10 is a diagram illustrating a specific configuration example of a controller according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, preferred embodiments of the attachment / detachment jig of the present disclosure will be described with reference to the drawings. The attachment / detachment jig according to the present disclosure is used when attaching or detaching a sensor main body to or from a sensor base attached to an installation surface such as a ceiling or wall, and has a technical feature in that it is configured to reduce the effective weight of the worker holding the support rod by attaching a balloon containing a gas with a specific gravity less than that of air to the support rod, thereby reducing the workload and shortening the work time, thereby improving the efficiency of the attachment / detachment work.

[0014] Embodiment 1 Fig. 1 is a diagram showing the overall configuration of an attachment / detachment jig according to a first embodiment of the present disclosure. The attachment / detachment jig shown in Fig. 1 includes a support rod 10, a jig main body 20, and a balloon 30. The jig main body 20 attached to one end of the support rod 10 is configured to have a claw portion 20a.

[0015] A ceiling-mounted fire detector 1 (hereinafter simply referred to as detector 1) is configured by attaching a detector main body 1a to a detector base that is attached directly to the installation surface. When removing the detector main body 1a from such a detector 1, the worker engages one end of the support rod 10, specifically, the claw portion 21a provided on the jig main body 20 that is attached to the end closest to the installation surface when using the attachment / detachment jig, with a slit provided in the detector main body 1a to set it in a hold state where the detector main body 1a can be held, and then rotates the support rod 10 in a twisting motion.

[0016] If the ceiling on which the detector 1 is installed is high and the length of the support rod is 5 to 10 m, the weight of the support rod 10 will be heavy for the worker who operates it by holding the other end of the support rod 10, which has the jig main body 20 attached to one end, resulting in an increase in workload and working time.

[0017] Therefore, in the attachment / detachment jig according to the first embodiment, a balloon 30 is provided on the support rod 10 for the purpose of substantially reducing the weight of the support rod 10 for the worker. In the example of Fig. 1, the balloon 30 is attached to the support rod 10 at one end side of the support rod 10 to which the jig main body 20 is attached, directly below the jig main body 20, that is, at a position closer to the worker than the jig main body 20.

[0018] A gas with a specific gravity less than that of air is contained inside the balloon 30. An example of a gas with a specific gravity less than that of air is helium gas. The balloon 30 is made of a stretchable material, and the balloon 30 can be adjusted to a desired size by adjusting the amount of gas contained therein.

[0019] The balloon 30 in the first embodiment is desirably sized to contain an amount of gas with buoyancy that can reduce the workload of the worker relative to the weight of the support rod 10. By attaching such a balloon 30 to one end of the support rod 10, it is possible to reduce the effective weight of the worker who holds the other end of the support rod 10 from a floor surface away from the installation surface and performs the attachment and detachment operation.

[0020] Note that, in order to prevent the visibility of the jig main body 20 and the detector 1 from being impaired for the worker when the balloon 30 is attached to the support rod 10, it is possible to make the material of the balloon 30 transparent or translucent. By forming the balloon 30 from a transparent or translucent material, the worker can see the jig main body 20 and the detector 1 through the balloon 30.

[0021] 1 illustrates a configuration in which the inner periphery of the balloon 30 is in close contact with the outer periphery of the support rod 10, but the balloon 30 according to the present disclosure is not limited to this configuration. In order to ensure visibility of the jig main body 20 for the worker, it is also possible to provide a space between the outer periphery of the support rod 10 and the inner periphery of the balloon 30, and connect the support rod 10 and the balloon 30 with a rod or the like, thereby enabling the attachment of a doughnut-shaped balloon 30.

[0022] By adopting such a configuration, even if the material of the balloon 30 is not transparent or translucent, the worker can directly view the jig main body 20 by using the space between the outer periphery of the support rod 10 and the inner periphery of the balloon 30.

[0023] As described above, according to the first embodiment, a balloon containing a gas with a specific gravity less than that of air is attached to the support rod. As a result, the weight of the support rod can be substantially reduced for the worker who operates the support rod, and an attachment / detachment jig can be realized that can reduce the workload and shorten the working time when attaching or detaching the detector main body using the support rod.

[0024] Embodiment 2 In the second embodiment, an attachment / detachment jig will be described that further includes a configuration for storing gas in the balloon 30 and for sucking and discharging the gas in the balloon 30. In the following, a specific example will be described in which helium is used as the gas having a specific gravity less than that of air.

[0025] Fig. 2 is a diagram showing the overall configuration of an attachment / detachment jig according to a second embodiment of the present disclosure. The attachment / detachment jig shown in Fig. 2 includes a support rod 10, a jig main body 20, and a balloon 30, as well as a controller 40, a gas cylinder 50, piping 60, an intake solenoid valve 71 as a valve capable of intake, and an exhaust solenoid valve 72 as a valve capable of exhaust to the outside. Therefore, the following will mainly describe in detail the configuration further added in the second embodiment.

[0026] The controller 40 is attached to the other end of the support rod 10 and enables the opening and closing of the intake solenoid valve 71 and the exhaust solenoid valve 72, which will be described later, to be controlled based on the operator's operational input while holding the support rod 10.

[0027] For example, helium gas is stored in the gas cylinder 50. The gas cylinder 50 is connected to the balloon 30 via a pipe 60.

[0028] An intake solenoid valve 71, which is provided as a valve capable of inhaling gas from the gas cylinder 50, is provided on the path of the piping 60, and when opened, serves to supply the helium gas contained in the gas cylinder 50 to the balloon 30. An exhaust solenoid valve 72, which is provided as a valve capable of discharging gas to the outside, serves to discharge the helium gas contained in the balloon 30 to the outside when opened. Both valves are described as solenoid valves in the second embodiment, but are not limited to this.

[0029] Regarding the method of connecting the controller 40 to the intake solenoid valve 71 and the exhaust solenoid valve 72, detailed electrical wiring etc. is omitted from the illustration, but the controller 40 may be configured so that the electrical wiring directly connects the controller 40 to the intake solenoid valve 71 and the exhaust solenoid valve 72 via the support rod 10, or the controller 40 may be configured so that the intake solenoid valve 71 and the exhaust solenoid valve 72 are connected wirelessly, allowing the opening and closing of the solenoid valves to be remotely controlled.

[0030] Fig. 3 is a diagram showing a specific configuration example of controller 40 according to embodiment 2 of the present disclosure. As shown in Fig. 3, operation buttons 41 and 42 for controlling the opening and closing of intake solenoid valve 71 and operation buttons 43 and 44 for controlling the opening and closing of exhaust solenoid valve 72 are provided on the surface of controller 40. Controller 40 is connected to intake solenoid valve 71 and exhaust solenoid valve 72 wirelessly or by wire.

[0031] The operation button 41 is an operation button that accepts an operation input for opening the intake solenoid valve 71. When the operation button 41 is pressed, an open command signal is output from the controller 40 to the intake solenoid valve 71, which switches the intake solenoid valve 71 to the open state, thereby supplying helium gas from the gas cylinder 50 to the balloon 30. As an example, the surface of the operation button 41 is marked with "ON Supply."

[0032] The operation button 42 is an operation button that accepts an operation input for closing the intake solenoid valve 71. When the operation button 42 is pressed, a close command signal is output from the controller 40 to the intake solenoid valve 71, which switches the intake solenoid valve 71 to the closed state, thereby stopping the supply of helium gas from the gas cylinder 50 to the balloon 30. As an example, the surface of the operation button 42 is marked with "OFF Stop."

[0033] Alternatively, the configuration may be such that no operation button 42 is provided and only operation button 41 is provided, and an open signal is continuously output to intake solenoid valve 71 while operation button 41 is pressed, and a close command signal is output when operation button 41 ceases to be pressed.

[0034] The operation button 43 is an operation button that accepts an operation input for opening the exhaust solenoid valve 72. When the operation button 43 is pressed, an open command signal is output from the controller 40 to the exhaust solenoid valve 72, which switches the exhaust solenoid valve 72 to the open state, thereby exhausting the helium gas contained in the balloon 30 to the outside of the balloon 30. As an example, the surface of the operation button 43 is marked with "ON EXHALE."

[0035] The operation button 44 is an operation button that accepts an operation input for closing the exhaust solenoid valve 72. When the operation button 44 is pressed, a close command signal is output from the controller 40 to the exhaust solenoid valve 72, which switches the exhaust solenoid valve 72 to the closed state, thereby stopping the exhaust of the helium gas contained in the balloon 30. As an example, the surface of the operation button 44 is marked with "OFF Stop."

[0036] As with the configuration of the operation buttons 41 and 42 described above, the operation button 44 may not be provided, and only the operation button 43 may be provided.

[0037] Thus, the attachment / detachment jig according to the second embodiment is configured to further include the components of the attachment / detachment jig according to the first embodiment, as well as the controller 40, the gas cylinder 50, the piping 60, the intake solenoid valve 71, and the exhaust solenoid valve 72. As a result, the worker can easily supply helium gas to the balloon 30 and exhaust helium gas from the balloon 30 by operating the controller 40 while holding the support rod 10 during work.

[0038] As described above, according to the second embodiment, the balloon 30 attached to the tip of the support rod can be easily inflated / deflated at a desired timing during the work of attaching or detaching the sensor by a simple operation at the operator's hand side. As a result, an attachment / detachment jig can be realized that can reduce the workload and shorten the work time when attaching or detaching the sensor main body using the support rod.

[0039] In particular, while performing the attachment / detachment work, the worker can freely change the size by controlling the amount of gas by inhaling and venting the gas inside the balloon 30. Therefore, the size of the balloon 30 can be freely controlled so that the balloon 30 does not interfere with beams, pillars, etc. near the ceiling where the detector 1 is installed. This ensures the worker's visibility of the detector 1 and the jig main body 20, and enables the attachment / detachment work even in a narrow installation location of the detector 1, and realizes a support rod that is easy to operate. [Explanation of symbols]

[0040] 1 fire detector (detector), 1a detector body, 10 support rod, 20 jig body, 21a claw portion, 30 balloon, 40 controller, 41 to 44 operation buttons, 50 gas cylinder, 60 piping, 71 intake solenoid valve, 72 exhaust solenoid valve.

Claims

1. A support rod that is operated by an operator by holding one end thereof; a jig body part having a claw part that is attached to the other end of the one end held by the worker and can hold the sensor body; An attachment / detachment tool used when attaching / detaching the sensor main body to / from a sensor base attached to an installation surface, The attachment / detachment jig further includes a balloon attached to the support rod so as to be positioned closer to the worker than the jig main body, and containing a gas with a specific gravity smaller than that of air.

2. a gas cylinder containing the gas and connected to the balloon via a pipe; The balloon is provided with a valve that allows the gas to be drawn in from the gas cylinder and exhausted to the outside. The attachment / detachment jig according to claim 1 .

3. The valve capable of drawing in and discharging gas from the gas cylinder to the outside is an intake solenoid valve that is provided on the path of the piping and that supplies the gas contained in the gas cylinder to the balloon when the solenoid valve is in an open state; an exhaust solenoid valve that exhausts the gas contained in the balloon to the outside when in an open state; a controller attached to one end of the support rod; Furthermore, The controller is capable of controlling the opening and closing of the intake solenoid valve and the exhaust solenoid valve based on an operation input by an operator. The attachment / detachment jig according to claim 2 .

4. The balloon is formed of a transparent or semi-transparent material that allows a worker holding the support rod to see the jig body through the balloon. The attachment / detachment jig according to any one of claims 1 to 3.

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