JP6637819B2 - Mobile inspection machine - Google Patents

Description

  The present invention provides an inspection unit that includes an inspection unit that performs inspection by introducing air to be inspected on the ground surface side, and an alarm sound generation unit that generates an alarm sound according to an inspection result of the inspection unit. The present invention relates to a mobile inspection machine provided with a control unit for controlling the operation of the inspection machine main body and an operation handle for moving the inspection machine main body along the ground surface.

2. Description of the Related Art As a mobile inspection device of this type, a gas leakage inspection device for inspecting gas leakage from a gas conduit buried underground has been known (for example, see Patent Document 1).
Specifically, such a gas leakage inspection device is configured such that the operation handle is positioned upward with the inspection device body in an inspection position in which the periphery of an air collection unit that is open to the outside on the bottom side contacts the ground surface. The inspection is performed in the first posture positioned at the side moving operation position. At the time of the inspection, when the operator pushes the operation handle and moves the inspection machine body along the ground surface, the air to be inspected on the ground surface side is introduced into the inspection unit and inspected. In the case of an abnormal state such as a case where a specific component such as gas exists beyond an allowable range, an alarm sound is generated by the alarm sound generation unit.

  This gas leak inspection machine has a hinge mechanism that allows the operation handle to swing up and down. When the body of the inspection machine is in the above-described inspection posture, the position of the operation handle is stored on the ground surface side. By lowering to the position, it can be stored compactly.

JP-A-63-152546

In a conventional mobile inspection machine, once an alarm sound is generated, a relatively loud alarm sound is continuously generated until an operator operates a volume switch.
However, when the operation of the volume switch is complicated or it takes time to complete the operation of the volume switch, even if the worker has sufficiently heard the alarm sound, Nevertheless, the warning sound may be continued more than necessary. In particular, if the volume switch is located on the surface of the inspection machine on the ground surface away from the operator's hand, the operation must be completed after the operator hears the alarm sound and operates the volume switch. The user needs to take a relatively long time because the user needs to release his / her hand from the operation handle and bend the body until the volume switch can be reached. If the warning sound is continued longer than necessary, problems such as noise damage and unnecessary feeling of anxiety may occur to nearby residents and the like.

  In view of this situation, a main problem of the present invention is to provide a technique for quickly and accurately muting or lowering the volume of a warning sound when the worker hears the warning sound in the mobile inspection device. On the point.

A first characteristic configuration of the present invention is an inspection unit including an inspection unit that introduces and inspects air to be inspected on the ground surface side, and an alarm sound generation unit that generates an alarm sound according to an inspection result of the inspection unit. Machine body,
A control unit for controlling the operation of the inspection machine main body,
An operation handle for moving the inspection machine body along the ground surface, and a mobile inspection machine,
A first position in which the operation handle is positioned at a storage position on the ground surface side in a state in which the inspection device main body is in a predetermined inspection position, and a storage position in which the operation handle is stored in a state in which the inspection device main body is in the inspection position. A second posture positioned at a movement operation position above the position, and a third posture different from the first posture and the second posture, the posture can be freely changed by operating the operation handle;
The control unit does not generate an alarm sound from the alarm sound generation unit when the third posture is attained, or executes a warning sound volume control for lowering the sound volume of the alarm sound from a set sound volume.

  According to this configuration, in a state where the inspection machine main body is in the inspection posture, the operation handle is in the first posture in which the operation handle is located at the storage position on the ground surface side, and compact storage is possible. On the other hand, when the inspection machine body is in the inspection position, the operation handle is in the second position in which the operation handle is located at the moving operation position above the storage position, and the inspection unit inspects the air to be inspected on the ground surface side. Becomes possible. Then, at the time of such an inspection, when an alarm sound is generated by the alarm generation unit, the attitude change from the second attitude to the third attitude is performed, thereby executing the alarm volume control, The generated alarm sound can be silenced or reduced in volume.

The third posture in which the alarm volume control is performed is different from the second posture at the time of storage and the second posture at the time of inspection, and further, the first posture and the second posture are different from each other. The posture can be freely changed by operating the operation handle with respect to the two postures.
With this, the posture change to the third posture can be easily executed, such as operating the operation handle while holding the operation handle at the time of inspection. When the alarm sound is generated by the alarm sound generating unit during the inspection, the attitude change to the third attitude is performed quickly and accurately to execute the alarm volume control, and the alarm sound is muted or reduced. be able to.

  Therefore, according to the present invention, it is possible to provide a mobile inspection machine that can quickly and accurately mute or lower the volume of a warning sound when the worker hears the warning sound.

  A second characteristic configuration of the present invention is that the third posture is set to a posture in which the inspection machine main body is a non-inspection posture other than the inspection posture.

According to this configuration, at the time of inspection, since the worker normally maintains the inspection machine main body in the inspection posture, the third posture in which the inspection machine main body is in a non-inspection posture other than the inspection posture is set to work. Unless there is an intention of the person, the posture becomes difficult during a normal inspection.
Therefore, it is possible to prevent the posture from being unintentionally changed to the third posture at the time of the inspection, and it is possible to avoid unnecessary execution of the alarm volume control.
In addition, since the non-inspection posture is a posture that can be clearly distinguished from the inspection posture, a state in which the alarm volume control is executed by changing the posture of the inspection machine body to the third posture, which is the non-inspection posture. Will be clearly recognizable. Thereby, for example, the worker can clearly recognize that the alarm sound has been generated, but the alarm sound is temporarily muting or lowering the volume by the alarm volume control. Can be surely performed.

A third characteristic configuration of the present invention is that the inspection unit is provided with an air collection unit that is opened to the outside on a bottom side of the inspection machine main body,
The inspection posture of the inspection machine main body is a posture in which a peripheral portion of the air collecting unit is in contact with the ground surface,
The non-inspection posture of the main body of the inspection machine is that the periphery of the air collecting unit is in a posture floating above the ground surface.

  According to this configuration, at the time of the inspection in the second posture, the posture of the inspection machine main body is the inspection posture in which the periphery of the air collecting unit is in contact with the ground surface, so that the air to be inspected on the ground surface side is concerned. Is appropriately introduced into the air collecting section. On the other hand, at the time of executing the alarm volume control in the third posture, the posture of the inspection machine main body is such that the periphery of the air collecting unit floats from the ground surface and the air to be inspected on the ground surface side is the air collecting unit. Since the non-inspection posture is not properly introduced into the inspection posture, the non-inspection posture is clearly distinguished from the inspection posture, and the state in which the alarm volume control is executed can be accurately recognized.

  In a fourth characteristic configuration of the present invention, the third posture includes a posture in which the inspection machine main body stands alone in the non-inspection posture in which a periphery of the air collecting unit is floated from the ground surface. There is in the point.

  According to this configuration, at the time of executing the alarm volume control in the third posture, the inspection device main body can stand alone in the non-inspection posture in which the periphery of the air collecting unit is floated from the ground surface. it can. With this, when the alarm volume control is executed, the operator releases his / her hand from the operation handle in a state where the operator stands alone in the third posture, and smoothly performs necessary measures when an alarm sound is generated. be able to.

  A fifth characteristic configuration of the present invention is that the third posture is set to a posture in which a moving operation of the inspection machine main body along the ground surface is obstructed.

  According to this configuration, at the time of the inspection in the second posture, even if the posture is unconsciously changed to the third posture, the movement operation along the ground surface of the inspection machine main body is obstructed. The posture change can be grasped and corrected, and as a result, unnecessary execution of the alarm volume control can be avoided. Further, when the inspection is performed again after the execution of the alarm volume control in the third posture, in order to allow the moving operation of the main body of the inspection machine along the ground surface, the second posture is surely changed from the third posture. Since the attitude change is performed, the alarm volume control is surely ended, so that it is possible to prevent the inspection while the alarm sound is muted or the volume is reduced.

  In a sixth characteristic configuration of the present invention, the third posture is set to a posture in which the operation handle is located on a side opposite to the storage position of the first posture with reference to the moving operation position of the second posture. In that it is.

  According to this configuration, when shifting to the storage state in the second posture at the time of inspection, the operation handle at the transfer operation position is displaced to the storage position on the ground surface side to change the posture to the first posture. On the other hand, when performing the alarm volume control, the operation handle at the moving operation position is displaced to a position opposite to the storage position to change the posture to the third posture. That is, based on the second posture at the time of inspection, the posture change to the first posture for storage and the posture change to the third posture for execution of the alarm volume control are performed by the respective operation handles. The moving directions are opposite to each other. Therefore, at the time of inspection, the transition to the storage state and the execution of the alarm volume control can be clearly distinguished and performed by operating the operation handle, and erroneous operation of the operation handle can be prevented.

A seventh characteristic configuration of the present invention is provided with a display unit that displays an inspection result of the inspection unit,
The control unit is configured to execute the alarm volume control while maintaining the operation state of the inspection unit and the display unit when the control unit is in the third posture.

  According to this configuration, in a state in which the alarm sound is generated by the alarm sound generation unit at the time of the inspection, the alarm volume control is performed by changing the attitude to the third attitude, and the alarm sound is muted or the volume is reduced. Even so, since the inspection unit and the display unit are maintained in the operating state, the operator checks the inspection result that has caused the alarm sound displayed on the display unit and takes an appropriate response. It can be performed reliably.

A perspective view showing a state at the time of inspection of a mobile inspection machine. Partial perspective view of the mobile inspection machine shown in FIG. Block diagram showing a schematic configuration of a mobile inspection machine The figure which shows the state of the 1st attitude | position (a), 2nd attitude | position (b), and 3rd attitude | position (c) of a mobile inspection machine.

An embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the mobile inspection machine 1 according to the present embodiment is configured such that an inspection unit A for introducing and inspecting the air to be inspected on the ground surface g side and an inspection result at the inspection unit A are provided. An inspection machine main body C having an alarm sound generation section B for generating an alarm sound, a control section 21 for controlling the operation of the inspection machine main body C, and an operation handle 6 for moving the inspection machine main body C along the ground surface. And The mobile inspection machine 1 is moved along the ground surface g in an inspection posture in which the air collecting unit 53 of the inspection unit A is along the ground surface g, and is buried in the ground below the ground surface g. It is configured as a gas leakage inspection machine for inspecting gas leakage from a gas pipe (not shown) or the like.

The inspection machine main body C is composed of a running frame 4 having running wheels 42 and 43 on the front and rear, respectively, and a main body box 2 containing the control unit 21 and other various auxiliary machines. The operating handle 6 is swingably connected to the traveling frame 4 within a predetermined swing range by a hinge structure 32 (see FIG. 1) provided on the front side of the traveling frame 4. The position can be changed between a storage position on the traveling frame 4 side (ground surface g side) (see FIG. 4A) and a movement operation position above the storage position (see FIG. 4B). It has become.
Further, since the main body box 2 of the inspection machine main body C is fixed below the operation handle 6, the main body box 2 can also swing with the operation handle 6 with respect to the traveling frame 4.

  Further, the operation handle 6 is configured such that the grip 6a provided on the distal end side (the side opposite to the connection with the running frame 4) is close to the main body box 2 (see FIG. 4A) or separated (see FIG. 4A). (See (b) and (c)).

  As shown in FIG. 3, a sealing member 5 made of a rubber sheet material for forming an air collecting portion 53 that is opened to the outside on the bottom surface side of the inspection machine main body C is provided on the lower surface side of the traveling frame 4. Is provided. The front end and the rear end of the seal member 5 are fixed to the front and rear of the traveling frame 4 in a state where the center portion is bent downward. Furthermore, a concave portion 52 that is concave upward is formed on the lower surface side of the central portion of the seal member 5, and the internal space of the concave portion 52 is formed as an air collecting portion 53. Then, in a state where the posture of the inspection machine body C is the inspection posture in which the traveling wheels 42 and 43 are grounded on the ground surface g, the peripheral portion 51 of the air collecting portion 53 of the seal member 5 is in contact with the ground surface g. As a result, the open portion of the air collecting portion 53 is covered with the ground surface g, and the air collecting portion 53 is substantially sealed from the outside air.

Further, an inlet 54 facing the air collecting portion 53 is formed in the concave portion 52 of the seal member 5, and the inlet 54 and the gas sensor 22 described later are connected by the suction passage 27. The suction path 27 is provided with a suction pump 23 for sucking the air to be inspected collected by the air collecting unit 53 through the suction path 27 and introducing the air to the gas sensor 22.
With such a configuration, when the inspection machine body C is set to the inspection posture in which the peripheral portion 51 of the air collecting unit 53 is in contact with the ground surface g, and the inspection machine body C in the inspection posture is moved along the ground surface g, The air on the ground surface g side existing in the collection unit 53 is sucked as the air to be inspected, and the sucked air to be inspected is introduced into the gas sensor 22.

The main body box 2 incorporates a gas sensor 22, a suction pump 23, and the like in addition to a control unit 21 including a computer. Further, the main body box 2 is provided with a speaker 25 and the like capable of outputting sound in a state in which the operator who grips and operates the operation handle 6 can listen. Furthermore, on the upper end side of the main body box 2, a display unit 24 such as a liquid crystal display and various switches for turning on / off the power, switching the range, adjusting the volume, and the like are provided so as to be visible by the worker. Class 26 is arranged.
The control unit 21 performs various types of arithmetic processing based on output signals from the gas sensor 22 and the switches 26 and the like, and controls the display unit 24 and the speaker 25 based on the calculation results to display desired information and output sound. It is configured to perform.

  The gas sensor 22 is configured using a known sensor element that is sensitive to a combustible gas (hydrogen, methane, propane, or the like) as a specific component, and is configured according to the concentration of the specific component in the introduced air to be inspected. The signal is output to the control unit 21. Then, the control unit 21 calculates the concentration of the flammable gas in the air to be inspected from the output signal of the gas sensor 22 and displays it on the display unit 24. When the concentration of the specific component exceeds the allowable range, the control unit 21 performs the work. In order to notify the user, a predetermined alarm display is displayed on the display unit 24, and further, the speaker 25 is configured to generate a predetermined alarm sound as the alarm sound generation unit B.

  Further, the main body box 2 has a built-in inclination sensor 28 such as an acceleration sensor that detects the inclination of the main body box 2 and outputs an output signal according to the inclination. The output signal of the inclination sensor 28 is controlled. Input to the unit 21. Then, in addition to the operation control at the time of inspection for generating an alarm sound based on the output signal of the gas sensor 22 as described above, the control unit 21 The configuration is such that the alarm sound is not generated from the speaker 25 or the alarm sound volume control is performed so that the sound volume of the alarm sound is lower than the set sound volume.

  Further, the movable inspection device 1 is configured such that the operator operates the operation handle 6 to switch between the first posture at the time of storage, the second posture at the time of inspection, and a specific third posture different from those postures. , The posture can be changed. Hereinafter, each of the first posture, the second posture, and the third posture will be described with reference to FIG.

(First posture)
The first posture of the mobile inspection machine 1 is the posture at the time of storage, and as shown in FIG. 4A, the inspection machine main body C is in a predetermined position where the peripheral portion 51 of the air collecting portion 53 contacts the ground surface g. In this state, the operation handle 6 is positioned at the storage position on the ground surface g side.
In the first posture, the main body box 2 comes close to the traveling frame 4. Furthermore, by contracting the operation handle 6 so that the grip portion 6a approaches the main body box 2, compact storage becomes possible.
In the first position, the gripping portion 6a is gripped and lifted in a transport state (not shown) in which the rear running wheel 43 is rotated right above the front running wheel 42. Can be transported. Further, a support portion 35 is provided on the front side of the main body box 2 so as to project at the same position as the front end portion of the front running wheel 42 in the front-rear direction. Thus, in the above-described transport state, the front running wheel 42 and the support portion 35 can be grounded on the ground surface g to be self-supporting, so that space-saving storage is possible.

(Second posture)
The second posture of the mobile inspection device 1 is a posture at the time of inspection, and as shown in FIG. 4B, the inspection device main body C is a predetermined position where the peripheral portion 51 of the air collecting portion 53 contacts the ground surface g. In this state, the operation handle 6 is located at the moving operation position above the storage position.
In the second posture, the operation handle 6 has a desired angle with respect to the ground surface g, and furthermore, the operation handle 6 is extended so that the grip 6a is separated from the main body box 2. In addition, the operator performing the inspection can hold the grip 6a on the distal end side of the operation handle 6 with a reasonable standing posture and push the gas inspection machine 1 to move the same. In such a moving operation, the surrounding portion 51 of the air collecting portion 53 has a predetermined inspection posture in contact with the ground surface g, and the air collecting portion 53 in the inspection posture collects the inspection target air on the ground surface g side. Thus, the air to be inspected is supplied to the gas sensor 22, and it is possible to inspect whether the air to be inspected contains a combustible gas or not. If the flammable gas concentration in the air to be inspected exceeds the allowable range in this inspection, a warning sound is generated from the speaker 25.

(3rd posture)
The third posture of the mobile inspection device 1 is a posture in which the above-mentioned alarm volume control is performed, and as shown in FIG. 4C, is different from the first posture and the second posture. ing.
Then, the control unit 21 is configured to execute the above-described alarm volume control when it is determined from the output signal of the inclination sensor 28 that such a third posture has been achieved.
Therefore, when an alarm sound is generated at the time of the inspection in the second posture (see FIG. 4B), the operator operates the operation handle 6 while holding the operation handle 6, and The posture is changed to the third posture (see FIG. 4C). As a result, the alarm volume control is automatically executed by the control unit 21 without operating the switches 26 located at a position away from the operator's hand, and the alarm sound is muted or volume quickly and accurately. Can be reduced.

Further, when the control unit 21 determines that the third posture has been attained based on the output signal of the inclination sensor 28, the control unit 21 may execute a predetermined initial setting process in addition to the above-described alarm volume control.
In this initial setting process, the sensor sensitivity of the mobile inspection device 1 is set to zero, and the basic performance state of the mobile inspection device 1 such as the remaining battery level is checked. In this zero setting, it is checked whether or not the specific component concentration, which is the inspection result of the mobile inspection device 1, indicates zero. If not, the zero point set for the output of the gas sensor 22 is determined. to correct.
Further, the delay time until the alarm volume control is executed is set to, for example, 1 second based on the time point when the posture change to the third posture is detected by the output signal of the inclination sensor 28, and the initial setting process is performed. The delay time until the execution is set to, for example, 3 seconds. By setting such a delay time, even when the posture is changed to the third posture by mistake, by returning the posture, it is possible to avoid the execution of the unintended alarm volume control and the initial setting process. it can.

  In addition, the non-inspection posture, which is the posture of the inspection machine body C in the third posture, is a posture other than the inspection posture that is difficult to be obtained during a normal inspection unless there is an intention of an operator, and is clearly different from the inspection posture described above. This is a posture that can be distinguished, specifically, a posture in which the peripheral portion 51 of the air collecting portion 53 is floating above the ground surface g, as shown in FIG. This prevents the posture from being unconsciously changed to the third posture during the inspection of the second posture (see FIG. 4B), and the alarm volume control when the posture is changed to the third posture. Thereby, it can be clearly recognized that the alarm sound is temporarily muted or the volume is being reduced.

  Further, the third posture (see FIG. 4C) is based on the moving operation position of the operation handle 6 in the second posture (see FIG. 4B). Is set in a posture that is located on the opposite side to the storage position. That is, when changing the posture from the second posture to the third posture, the operator moves the operation handle 6 beyond the swing range thereof, as shown by a white arrow in FIG. It is operated so as to lift toward the side opposite to the storage position on the side. Then, the inspection machine main body C assumes a non-inspection posture in which the peripheral portion 51 of the air collecting portion 53 is lifted from the ground surface g. That is, at the time of inspection in the second posture), the operation of the operation handle 6 for changing the posture to the third posture is different from the operation of the operation handle 6 for changing the posture to the first posture. Are clearly distinguished. Therefore, erroneous operation of the operation handle 6 for executing the alarm volume control can be prevented.

  The posture of the mobile inspection machine 1 shown in FIG. 4 (c) is such that the inspection machine body C is in a non-inspection posture in which the peripheral portion 51 of the air collecting part 53 is lifted from the ground surface g, and is used for traveling on the front side. The wheel 42 and the support portion 35 are grounded on the ground surface g to be self-standing, and the third posture is a posture including the self-standing posture. Thus, when the alarm volume control is performed, the worker can take an appropriate action by releasing his / her hand from the operation handle 6 in a state where the worker stands alone in the third posture.

  The third position in which the alarm volume control is executed is within a range from the position in which the operation handle 6 is slightly lifted toward the self-standing position side to the second posture (see FIG. 4B) to the self-standing position. Posture. Thus, even when an alarm sound is generated during the inspection in the second posture, the alarm volume control is executed when the operator slightly lifts the operation handle 6 toward the self-standing position, The alarm sound can be quickly muted or the volume lowered. In addition, since the warning sound is quickly muted or the volume is reduced as described above, the worker can calm down and set the mobile inspection device 1 in the self-standing position.

  In addition, the self-standing posture included in the third posture is such that the support portion 35 is also grounded to the ground surface g while the rear running wheel 43 is lifted off the ground surface g, thereby making the ground surface of the inspection machine main body C ground. The posture is set such that the movement operation along g is obstructed. Accordingly, even when the posture is unconsciously changed to the third posture during the inspection, the worker is aware of the change in posture because the traveling is hindered. Therefore, the posture change is corrected, and the unnecessary execution of the alarm volume control is avoided. When the inspection is performed again after the execution of the alarm volume control in the third posture, the traveling is hindered as it is, so that the posture is always changed to the second posture by the operator, so that the alarm volume control is surely performed. To end. This prevents the inspection while the alarm sound is muted or the volume is reduced.

  Further, the control unit 21 executes the alarm volume control when the third posture is attained. In executing the alarm volume control, the control unit 21 introduces the inspection target air on the ground surface g side to perform the inspection. The inspection unit A for performing the inspection and the display unit 24 for displaying the concentration of the flammable gas in the air to be inspected and the like are configured to be maintained in the operating state. Thus, even when the alarm volume control is executed by changing the posture to the third posture and the alarm sound generated by the speaker 25 is muted or the volume is lowered, the operator can display the display unit 24 on the display unit 24. It is possible to confirm the test result of the flammable gas concentration or the like that has caused the displayed alarm sound, and to appropriately perform appropriate measures.

[Another embodiment]
(1) In the above embodiment, the third posture for executing the alarm volume control is set to a posture in which the inspection machine main body C is a non-inspection posture other than the inspection posture, but the third posture is determined by the inspection machine main body C. Although different from the second posture that is the inspection posture, the inspection machine main body C may be set to the posture that is the inspection posture similarly to the second posture. In this case, when the posture is changed from the second posture to the third posture, the position of the operation handle 6 is maintained while the inspection machine main body C is maintained in the inspection posture in which the peripheral portion 51 of the air collecting unit 53 is in contact with the ground surface g. It will be changed by operating the operation handle 6.

(2) In the above embodiment, as shown in FIG. 4 (c), the third posture for executing the alarm volume control is such that the front running wheel 42 and the support portion 35 are grounded to the ground surface g and become independent. However, such a configuration for independence may be modified or omitted.

(3) In the above-described embodiment, in the third position for executing the alarm volume control, the support unit 35 is grounded to the ground surface g as a configuration that hinders the movement operation of the inspection machine main body C along the ground surface g. However, in the third posture, the moving operation may be inhibited by locking the rotation of the front running wheel 42 that is grounded to the ground surface g. In addition, in the third posture, the moving operation of the inspection machine main body C along the ground surface g may be allowed. In this case, the inspection machine main body C can be moved while the alarm volume control is being performed.

(4) In the above embodiment, the operation direction of the operation handle 6 for changing the posture from the second posture at the time of inspection to the third posture for executing the alarm volume control is based on the movement operation position of the second posture. Although the direction is set in the direction opposite to the storage position of the first posture, even if the direction is not the side opposite to the storage position of the first posture but is set to a clearly different direction, the erroneous operation of the operation handle 6 can be prevented. Can be prevented. Further, the operation direction of the operation handle 6 for changing the posture from the second posture to the third posture is set to a direction on the same side as the storage position of the first posture based on the movement operation position of the second posture. That is, the alarm volume control may be executed by moving the operation handle 6 from the moving operation position to the storage position side.

(5) In the above embodiment, the inspection unit A and the display unit 24 are configured to execute the alarm volume control while maintaining the operating state when the third posture is set. Alternatively, the inspection unit A and the display unit 24 may be in a stopped state.

DESCRIPTION OF SYMBOLS 1 Mobile inspection machine 6 Operation handle 21 Control part 24 Display part 51 Peripheral part 53 Air collection part A Inspection part B Alarm sound generation part C Inspection machine main body g Ground surface

Claims (7)

Inspection unit for introducing and inspecting the air to be inspected on the ground surface side, and an inspection machine main body including an alarm sound generation unit that generates an alarm sound according to the inspection result in the inspection unit,
A control unit for controlling the operation of the inspection machine main body,
An operation handle for moving the inspection machine body along the ground surface, and a mobile inspection machine,
A first position in which the operation handle is positioned at a storage position on the ground surface side in a state in which the inspection device main body is in a predetermined inspection position, and a storage position in which the operation handle is stored in a state in which the inspection device main body is in the inspection position. A second posture positioned at a movement operation position above the position, and a third posture different from the first posture and the second posture, the posture can be freely changed by operating the operation handle;
The mobile inspection device, wherein the control unit does not generate an alarm sound from the alarm sound generation unit when the third posture is attained, or executes an alarm volume control to make the volume of the alarm sound smaller than a set volume.   The mobile inspection machine according to claim 1, wherein the third posture is set to a posture in which the inspection machine main body is a non-inspection posture other than the inspection posture. The inspection unit is provided with an air collection unit that is opened to the outside on the bottom surface side of the inspection device main body,
The inspection posture of the inspection machine main body is a posture in which a peripheral portion of the air collecting unit is in contact with the ground surface,
The mobile inspection device according to claim 2, wherein the non-inspection posture of the inspection device main body is a posture in which a peripheral portion of the air collecting unit floats from the ground surface.   4. The mobile inspection according to claim 3, wherein the third posture includes a posture in which the main body of the inspection device stands alone in the non-inspection posture in which a peripheral portion of the air collecting unit is floated from the ground surface. 5. Machine.   The mobile inspection machine according to any one of claims 1 to 4, wherein the third posture is set to a posture in which a movement operation along the ground surface of the inspection machine main body is obstructed.   The third posture is set to a posture in which the operation handle is located on the side opposite to the storage position of the first posture with reference to the moving operation position of the second posture. The mobile inspection device according to any one of the preceding claims. A display unit for displaying an inspection result of the inspection unit is provided,
The mobile control device according to any one of claims 1 to 6, wherein the control unit executes the alarm volume control while maintaining the operation state of the inspection unit and the display unit when the third posture is attained. Inspection machine.

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