JP2023177477A - Work machine - Google Patents

Abstract

To provide a work machine that is equipped with a portable battery that can be attached to and detached from a device support body, and that can prevent the work machine from becoming unstable due to the removal of the portable battery from the device support body.SOLUTION: A high-lift working vehicle 1 includes a swivel base 20 provided on a vehicle body 2 that can run, and a lifting device consisting of a boom 30 and a work platform 40. A battery mounting space LS1, in which a portable battery 80 is removably placed, is provided on the vehicle body 2. The high-lift working vehicle 1 is configured to restrict removal of the portable battery 80 from the battery mounting space LS1 when the lifting device is not in a retracted position.SELECTED DRAWING: Figure 1

Description

The present invention relates to a working machine equipped with a portable battery.

Conventionally, various equipment has been used, such as earth auger devices for digging holes and erecting pillars, devices for loading and unloading cargo to be transported from the loading platform installed on the vehicle body, and lifting devices for lifting and lowering workers and equipment for work at heights. A work vehicle is known as a work machine equipped with a work device suitable for the work. Some of these work vehicles are equipped with a battery that can supply power to electric devices (such as an electric motor that is the drive source for a hydraulic pump that generates hydraulic pressure to operate the work equipment) installed on the work vehicle. known (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2003-221194

The above-mentioned work machines (work vehicles) are sometimes used for recovery work in areas affected by natural disasters, but it is highly likely that the power supply network is cut off at such work sites. Therefore, if the batteries of working machines could be used for purposes other than working equipment (for example, charging mobile phones in evacuation areas during natural disasters, powering lighting equipment, etc.), it would be possible to provide even more useful support in disaster-stricken areas. Become.

Therefore, a portable battery that can be attached to and detached from the equipment support (for example, the body of a work vehicle) that supports the work equipment is mounted on the work machine, and when necessary, the portable battery can be removed from the equipment support during operation. If the device can be used for purposes other than devices, convenience can be further improved. However, if the portable battery is made to be able to be removed at will, depending on the posture of the work equipment, when the portable battery is removed, the weight of the machine (for example, the weight of the machine (for example, As a result, the center of gravity and weight balance of the work machine may deteriorate, causing the work machine to become unstable.

The present invention has been made in view of such problems, and although it includes a portable battery that can be attached to and detached from a device support, the work machine becomes unstable when the portable battery is removed from the device support. The purpose is to provide a working machine that can prevent this from happening.

In order to solve the above problems, a working machine according to the present invention includes a device support (for example, the vehicle body 2 in the embodiment) and a work device (for example, the swivel base 20 in the embodiment, the boom 30 and a workbench 40), a portable battery, and a working machine (e.g. , the aerial work vehicle 1) according to the embodiment is configured to restrict removal of the portable battery from the battery placement section if the posture of the work device does not satisfy a predetermined condition.

In the working machine having the above configuration, it is preferable that the predetermined condition includes a condition that the working device is in a retracted position.

The working machine configured as described above includes an opening large enough to cover the plurality of portable batteries placed on the battery placement part and to allow the portable batteries to be taken in and taken out, and a door part that can open and close the opening. and a door-closing lock device capable of locking the door in a closed state, and locking the door with the door-closing lock device locks the portable battery covered by the cover member. It is preferable that the battery be configured to be configured to restrict removal from the battery placement section.

In the working machine configured as described above, a locking member capable of locking the portable battery placed on the battery placement section; and a locking member capable of locking the locking member in a state in which the portable battery is locked. and a locking device, wherein the locking device locks the locking member to restrict removal of the portable battery locked by the locking member from the battery placement section. It is preferable that the configuration is as follows.

In the working machine having the above configuration, it is preferable that the working range of the working device can be set according to the number of the portable batteries placed on the battery placement section.

According to the working machine according to the present invention, when the posture of the working device does not satisfy a predetermined condition (for example, the condition that the stability of the working machine is not adversely affected even if the portable battery is removed while in the posture) Since the removal of the portable battery from the battery mounting section is regulated, this prevents the center of gravity and weight balance of the work machine from becoming unstable due to the removal of the portable battery. becomes possible.

In addition, in the working machine having the above configuration, by configuring the allowable work range of the working device to be settable according to the number of portable batteries placed on the battery placement section, It becomes possible to appropriately set the workable range of the working device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the left side of the aerial work vehicle which is one Embodiment of this invention. It is a side view showing the right side of the above-mentioned aerial work vehicle. FIG. 2 is a block diagram showing a configuration related to operation control of the above-mentioned aerial work vehicle. FIG. 2 is a perspective view showing the configuration of a slot-in lock type battery mounting space of the above-mentioned aerial work vehicle. FIG. 3 is a schematic diagram showing the configuration of a battery locking member used in the slot-in lock type battery mounting space. FIG. 3 is a perspective view showing the configuration of a door lock type battery placement space of the above-mentioned aerial work vehicle. FIG. 2 is a schematic diagram illustrating a state in which the elevating device of the aerial work vehicle is in a retracted position. It is a schematic diagram illustrating the state when the elevating device of the above-mentioned aerial work vehicle is in a working posture. FIG. 2 is a block diagram showing a configuration related to lock control of a portable battery and work range setting of an elevating device of the above-mentioned high-altitude work vehicle. It is a figure which shows the information regarding the slot-in lock type lock of the said aerial work vehicle in a table format. It is a figure which shows the information regarding the door lock type of the above-mentioned aerial work vehicle in a table format.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 and 2 show the side appearance of a vehicle for aerial work 1 as a working machine according to an embodiment of the present invention, and FIG. 1 shows the left side of the vehicle for aerial work 1 when facing the front, FIG. 2 shows the right side of the aerial work vehicle 1 as viewed from the front. Note that in FIG. 2, the same components as in FIG. 1 are denoted by the same reference numerals, and detailed explanation thereof will be omitted. Hereinafter, the overall configuration of the aerial work vehicle 1 will be described mainly with reference to these figures.

As shown in FIGS. 1 and 2, the aerial work vehicle 1 is a truck that has a driving cab 7 at the front of a vehicle body 2 and can run on a pair of left and right tire wheels 5 disposed at the front and rear of the vehicle body 2. It is constructed based on a vehicle. The tire wheel 5 includes a front wheel 5F consisting of a left front wheel 5Fl and a right front wheel 5Fr, and a rear wheel 5R consisting of a left rear wheel 5Rl and a right rear wheel 5Rr. The vehicle body 2 includes a chassis frame on which a left front wheel 5Fl, a right front wheel 5Fr, a left rear wheel 5Rl, and a right rear wheel 5Rr are arranged, and a vehicle body frame consisting of a subframe attached to the chassis frame. ing.

Jack devices are provided at the front, rear, left and right sides of the vehicle body 2 to lift and support the vehicle body 2 during high-place work. The jack device includes a pair of left and right front jacks 10F disposed behind the front wheels 5F, and a pair of left and right rear jacks 10R disposed behind the rear wheels 5R. In detail, a left front jack 10Fl is arranged behind the left front wheel 5Fl, a right front jack 10Fr is arranged behind the right front wheel 5Fr, a left rear jack 10Rl is arranged behind the left rear wheel 5Rl, A right rear jack 10Rr is disposed behind the right rear wheel 5Rr. Each of the jacks 10F and 10R lifts and supports the vehicle body 2 by driving the jack cylinder 11 provided therein and extending it downward, thereby stabilizing the entire vehicle.

Further, the left front jack 10Fl, the right front jack 10Fr, the left rear jack 10Rl, and the right rear jack 10Rr are each provided with an outrigger device (not shown). An outrigger cylinder 12 (see FIG. 3) is provided inside each outrigger device, and by expanding and contracting the outrigger cylinder 12, the corresponding jack device can be moved in the width direction of the vehicle body 2 (from the front to the back of the page in FIG. 1). Move horizontally in the direction from to the front). Specifically, by extending the outrigger cylinder 12, the jack device is moved in a direction that extends outward from the side surface of the vehicle body 2. Further, by contracting the extended outrigger cylinder 12, the jack device protruding outward from the side surface of the vehicle body 2 is moved in the direction of being stored in the vehicle body 2. A lower operating device 27 is provided at the rear end of the vehicle body 2 to operate each jack device, an outrigger device, a boom 30, etc., which will be described later.

As shown in FIG. 1, a battery mounting space LS1 is provided between the left rear wheel 5Rl and the left rear jack 10Rl on the lower side of the left subframe of the vehicle body 2. Three portable batteries 80 (comprised of, for example, lithium ion batteries) that can be individually attached to and detached from the vehicle body 2 are mounted on the vehicle body 2 . Near the front of this battery mounting space LS1, two jack bases 13 (placed on the road surface to receive the tip of the extending jack device) and two wheel chocks 14 are housed. Further, on the left side of the vehicle body 2, two tool boxes 26 for storing work tools, work equipment, etc. are provided one above the other. A power unit 51 housing a hydraulic pump 52 (see FIG. 3) and a pump drive motor 53 (see FIG. 3), which will be described later, is attached to the rear side of the left front jack 10Fl and below the lower tool box 26. ing.

As shown in FIG. 2, a battery mounting space LS2 is provided between the right rear wheel 5Rr and the right rear jack 10Rr on the right side of the vehicle body 2 and below the subframe. A fixedly installed battery 70 (for example, composed of a lithium ion battery) fixed to the vehicle body 2 by a fixture Fx is installed in the LS2. Two jack bases 13 and two wheel chocks 14 are housed near the front of this battery mounting space LS2. In addition, between the battery mounting space LS2 and the right rear jack 10Rr, there is a normal charging outlet 15 for connecting to an external AC 100V to 200V power supply, and a quick charging outlet for connecting to an external quick charger. 16 are provided.

A muffler 17 through which exhaust gas from the engine of the aerial work vehicle 1 is discharged is provided in front of the right rear wheel 5Rr. In addition, on the upper side of the subframe of the vehicle body 2, from behind the right front jack 10Fr to the position of the right rear wheel 5Rr, there is a loading space where construction tools used at the work site can be loaded. A side flap plate 18 is attached to the side surface of the space so as to be openable and closable.

As shown in FIG. 1, a swivel base 20 is provided on the subframe in the mounting area behind the driver's cab 7 of the vehicle body 2 and is configured to be driven by a swivel motor 24 to horizontally swivel freely around a vertical axis. It is being A base end portion of a boom 30 is attached to a support 21 extending upward from the swivel base 20 via a foot pin 22 so as to be swingable (up and down) in the vertical direction. The boom 30 has a configuration in which a base end boom 30a, an intermediate boom 30b, and a distal end boom 30c are combined in order from the swivel base 20 side in a nested manner. , the boom 30 can be expanded and contracted in the axial direction (longitudinal direction). Furthermore, a hoisting cylinder 23 is installed astride between the base end boom 30a and the strut 21, and by driving the hoisting cylinder 23 to expand and contract, the entire boom 30 is actuated in the up and down plane (vertical plane). be able to. Further, in a mounting area of the vehicle body 2 behind the driver cab 7, a boom cradle 28 for supporting the boom 30 in a retracted position, which will be described later, is provided.

A vertical post (not shown) is pivotally supported at the tip of the tip boom 30c so as to be swingable in the vertical direction. This vertical post is constructed by an upper leveling cylinder (not shown) installed across the tip of the tip end boom 30c, and a lower leveling cylinder 25 installed over the base end boom 30a and the support column 21. , rocking control (leveling control) is performed so that the boom 30 is always maintained in a vertical position regardless of how it rises and falls. A workbench 40 for a worker to board is attached to this vertical post via a workbench bracket (not shown). A swinging motor 34 (see FIG. 3) is provided inside this workbench bracket, and by driving this swinging motor 34, the entire workbench 40 is swung around the vertical post (horizontal rotation). operation). Here, since the vertical post is always maintained in a vertical position as described above, as a result, the floor surface of the workbench 40 is always maintained horizontally regardless of the up-and-down angle of the boom 30. In the aerial work vehicle 1, an elevating device serving as a working device includes a rotating platform 20, a boom 30, and a working platform 40.

The workbench 40 is provided with an upper operation device 45 that includes various operation means such as an operation lever, an operation switch, and an operation dial that are operated by a worker on the workbench. Therefore, by operating the upper operating device 45, a worker on the workbench 40 can rotate the swivel base 20 (rotation operation of the rotation motor 24), and raise and lower the boom 30 (telescoping operation of the lowering cylinder 23). ), the telescopic operation of the boom 30 (the telescopic operation of the telescopic cylinder 31), the swinging action of the workbench 40 (the rotational action of the swinging motor 34), and the like.

Next, referring mainly to FIG. 3, the jack cylinder 11, the outrigger cylinder 12, the swing motor 24, A configuration for controlling the operation of each hydraulic actuator including the cylinder 23, telescopic cylinder 31, swing motor 34, etc. will be described.

As shown in FIG. 3, the aerial work vehicle 1 receives operation signals from a hydraulic unit 50 that supplies hydraulic oil to operate each of the above-mentioned hydraulic actuators, an upper operating device 45, and a lower operating device 27. , and a controller 60 that controls the operation of each hydraulic actuator. The hydraulic unit 50 includes a hydraulic pump 52 and a pump drive motor 53 housed in the power unit 51 shown in FIG. 1, and a control valve that controls the supply direction and amount of hydraulic oil supplied from the hydraulic pump 52 to each hydraulic actuator. 54.

The pump drive motor 53 is rotationally driven by electric power supplied from the power supply device 90, thereby operating the hydraulic pump 52 and discharging hydraulic oil to the control valve 54. More specifically, when the bodywork power switch 8 provided on the vehicle (for example, the lower operating device 27) is operated from off to on when starting work, the controller 60 turns the bodywork power on. As a result, power can be supplied from the power supply device 90 to the pump drive motor 53. Then, the pump drive motor 53 is rotationally driven by the power supplied from the power supply device 90, and thereby hydraulic oil is discharged from the hydraulic pump 52 to the control valve 54.

The control valves 54 include an electromagnetic proportional control valve V1 corresponding to the jack cylinder 11, an electromagnetic proportional control valve V2 corresponding to the outrigger cylinder 12, an electromagnetic proportional control valve V3 corresponding to the swing motor 24, and an electromagnetic proportional control valve corresponding to the luffing cylinder 23. It has a valve V4, an electromagnetic proportional control valve V5 corresponding to the telescopic cylinder 31, and an electromagnetic proportional control valve V6 corresponding to the swing motor 34.

When an operation signal output by operating the upper operation device 45 or the lower operation device 27 is input to the controller 60, the controller 60 outputs a command signal according to the operation signal to the control valve 54. The control valve 54 electromagnetically drives the spools of the electromagnetic proportional control valves V1 to V6 based on a command signal from the controller 60, and the supply direction and amount of hydraulic oil supplied from the hydraulic pump 52 to each hydraulic actuator. and control the operating direction and operating speed of each hydraulic actuator. As a result, the upper operating device 45 or the lower operating device 27 causes the aforementioned jack device and outrigger device to extend and contract, the swivel platform 20 to swivel, the boom 30 to raise and lower, the boom 30 to extend and contract, and the work platform 40 to swing. Operations such as activation can be performed.

The power supply device 90 is connected to the fixed battery 70, the portable battery 80, the normal charging outlet 15, and the quick charging outlet 16 shown in FIG. The supplied power is supplied to an electric device provided in the vehicle body 2. In addition, power supplied from the normal charging outlet 15 and the quick charging outlet 16 is supplied to the vehicle battery (not shown) via the fixed battery 70, the portable battery 80, and the DC-DC converter (not shown). do. The power supply device 90 outputs a DC voltage to a DC-AC inverter 93, and the DC-AC inverter 93 converts the DC voltage supplied from the power supply device 90 to AC100V and connects it to a service outlet provided in the vehicle body 2. Output from 19.

Next, referring mainly to FIGS. 4 to 6, the configuration of the battery placement space LS1 in which the portable battery 80 is placed will be described. 4 and 5 are diagrams regarding the battery mounting space LS1 in one embodiment, and FIG. 6 is a diagram regarding the battery mounting space LS1 in another embodiment. The battery placement space LS1 shown in FIG. 4 includes three battery placement sections 103 defined by four partition plates 102 provided on a placement base plate 101. The interval between adjacent partition plates 102 is slightly wider than the width of the portable battery 80, and each battery placement part 103 can receive the portable battery 80 in an upright state.

The portable battery 80 is configured by accommodating a battery module (not shown) of a lithium ion battery in a rectangular parallelepiped battery case 81 having a handle 82 . Protective equipment is attached to each corner of the battery case 81 to prevent damage to the battery case 81 during transportation, but the illustration thereof is omitted. The portable battery 80 can be placed in or taken out from the battery placement part 103 while grasping the handle 82. The portable battery 80 placed in the battery placement part 103 is electrically connected to a power supply device 90 and supplies power to the electric device provided in the vehicle body 2 via the power supply device 90. It becomes possible to supply The portable battery 80 taken out from inside the battery placement part 103 can be used as an emergency power source that can be carried around, for example, in a disaster-stricken area.

As shown in FIG. 4, the tip of a battery locking member 105 (see FIG. 5) protrudes or retracts from the placement base plate 101 of the placement space LS1, corresponding to each battery placement portion 103. A hole 106 is formed. As shown in FIG. 5, the battery locking member 105 is configured to be able to swing around its base end, and locks the portable battery 80 placed in the battery placement section 103. It is possible to release the lock. Further, the battery locking member 105 is configured to be operated by a locking device 107. The locking device 107 includes, for example, an electric motor (not shown) that swings the battery locking member 105, and locks the portable battery 80 placed in the battery placement section 103. The battery locking member 105 in the locked state can be locked so that the locked state is maintained, or can be unlocked to release the locked state. Further, the locking device 107 is configured to be controlled by the controller 60 so that the lock of the battery locking member 105 (also referred to as a "locking lock") is enabled or disabled. .

When the locking is enabled, the locking device 107 locks the portable battery 80 with the battery locking member 105 in the battery placement section 103 on which the portable battery 80 is placed. , lock so that the locked state is maintained. At this time, the portable battery 80 cannot be taken out from the battery placement section 103. On the other hand, when the locking is disabled, the locking of the portable battery 80 by the battery locking member 105 is released in the battery mounting section 103 on which the portable battery 80 is placed, and the battery locking is released. Member 105 is retracted into hole 106. At this time, the portable battery 80 can be taken out from the battery placement section 103. Note that whether the lock is enabled or disabled, the battery locking device 107 prevents the battery locking member 105 from opening in the battery placement section 103 where the portable battery 80 is not placed. It is in a retracted state within the section 106. Therefore, the portable battery 80 can be placed on the battery placement section 103 where the portable battery 80 is not placed.

The battery placement space LS1 of another embodiment (also referred to as "door lock type") shown in FIG. 6 includes a cover member 110 that covers the portable battery 80 placed on the placement base plate 101. This cover member 110 has an opening 111 large enough to allow the portable battery 80 to be taken in and out of the cover member 110, and a cover door 112 that opens and closes the opening 111 is disposed above the opening 111. It is provided so that it can swing open. The cover door 112 is manually opened and closed by an operator. Note that the configuration inside the cover member 110 is similar to that shown in FIG. 4 (however, the above-described battery locking member 105, hole 106, and locking device 107 are not provided), and a detailed description will be omitted. .

The cover member 110 is provided with a cover door locking device 108. The cover door locking device 108 includes a door locking member that locks the cover door 112 in a closed state, an electromagnetic solenoid (both not shown) that operates the door locking member, and the like. door 112
The cover door 112 can be locked so as to keep the opening 111 closed, and the cover door 112 can be unlocked so that the opening 111 can be opened. Further, the cover door lock device 108 is configured to be controlled by the controller 60 so that the lock of the cover door 112 (also referred to as "door lock") is enabled or disabled.

When the door lock is enabled, the cover door locking device 108 locks the cover door 112 so that the cover door 112 maintains the state in which the opening 111 is closed. At this time, the portable battery 80 cannot be taken out from any of the battery placement parts 103 inside the cover member 110 and cannot be placed on any of the battery placement parts 103. On the other hand, when the door lock is disabled, the cover door locking device 108 releases the locking of the cover door 112. At this time, the cover door 112 can be opened, and the portable battery 80 can be taken out from the battery placement part 103 on which the portable battery 80 is placed. Portable battery 80 can now be placed on section 103. In the following description, unless the locking device 107 and the cover door locking device 108 are particularly distinguished, they are also collectively referred to as the portable battery locking device 109.

As described above, the portable battery 80 can be placed in the battery placement space LS1 or taken out from the battery placement space LS1. However, even though it is portable, the portable battery 80 is quite heavy. Therefore, if the portable battery 80 is made to be able to be taken out at any time, depending on the posture of the lifting device (boom 30, etc.), when the portable battery 80 is removed, the amount of the removed portable battery 80 may be As the vehicle weight decreases, the position of the center of gravity and weight balance of the vehicle for aerial work 1 may deteriorate, and the vehicle for aerial work 1 may become unstable. Therefore, in the aerial work vehicle 1, a limit is set on the timing at which the lifting device can be taken out, and the workable range of the lifting device can be set according to the number of portable batteries 80 mounted.

The conditions under which the portable battery 80 can be taken out and the setting of the workable range of the lifting device will be described below, mainly with reference to FIGS. 7 to 11. In the following explanation, the retracted position of the lifting device refers to the position where the vehicle body 2 is lifted and supported horizontally by the front jack 10F and rear jack 10R, and the boom 30 is placed on the boom cradle 28 with the boom 30 retracted, as shown in FIG. This refers to the posture when the body is supported. Furthermore, the working posture of the lifting device refers to the posture when the vehicle body 2 is lifted and supported horizontally by the front jack 10F and the rear jack 10R, and the boom 30 is separated from the boom cradle 28, as shown in FIG. say.

The aerial work vehicle 1 is equipped with various detection devices for detecting the posture of the lifting device and the number of portable batteries 80 installed, and outputs from these detection devices are provided. The detection signal is input to the controller 60. For example, as shown in FIG. 9, a battery placement number detection signal corresponding to the number of portable batteries 80 placed in the battery placement space LS1 is input from the portable battery detector 120 to the controller 60. . For example, the controller 60 receives a rotation angle detection signal corresponding to the rotation angle of the boom 30 (swivel base 20) from the boom rotation angle sensor 121, and a rotation angle detection signal corresponding to the rotation angle of the boom 30 from the boom heave angle sensor 122. An angle detection signal is input, an extension detection signal corresponding to the extension amount of the boom 30 is input from the boom length sensor 123, and a rotation angle detection signal corresponding to the rotation angle of the work platform 40 is input from the work platform rotation angle sensor 124. be done.

Further, for example, an overhang amount detection signal corresponding to the amount of overhang of the front jack 10F and the rear jack 10R toward the side of the vehicle body is input from the jack overhang amount sensor 125 to the controller 60, and from the jack ground sensor 126, an overhang amount detection signal is input to the front jack 10F and the rear jack 10R. and rear jack 1
A ground detection signal of 0R is input. For example, a travel speed detection signal corresponding to the travel speed of the aerial work vehicle 1 is inputted to the controller 60 from the travel speed sensor 128, and a driving cab locking signal corresponding to the locked state of the driving cab 7 is input from the driving cab locking sensor 129. A detection signal is input. Further, an on/off signal from the chassis power switch 8 is input to the controller 60 .

The number of portable batteries 80 placed in the battery placement space LS1 can be determined from the battery placement number detection signal from the portable battery detector 120. Swing angle detection signal from boom swing angle sensor 121, luffing angle detection signal from boom luffing angle sensor 122, extension amount detection signal from boom length sensor 123, swing angle detection signal from work platform swing angle sensor 124, jack tension Based on the overhang amount detection signal from the extension amount sensor 125 and the ground detection signal from the jack ground sensor 126, it can be determined whether the lifting device is in the retracted position or the working position. Based on the traveling speed detection signal from the traveling sensor 128, it can be determined whether the vehicle body 2 is traveling or not. Based on the driving cab lock detection signal from the driving cab lock sensor 129, it can be determined whether or not the driving cab 7 is locked. The on/off signal from the chassis power switch 8 indicates whether the chassis power source is on or off.

As shown in FIG. 9, the controller 60 includes a portable battery lock control section 61 and a work range setting section 63. The portable battery lock control unit 61 stores situation data for determining whether to enable or disable the lock (latching lock or door lock) of the portable battery lock device 109. The portable battery lock control unit 61 determines whether or not the situation matches the above situation data based on the on/off signal from the chassis power switch 8 and the detection signal output from each detection device, Based on the determination, the lock of the portable battery lock device 109 is enabled or disabled. The work range setting unit 63 stores data on a workable range defined as an area in which the tip of the boom 30 (work platform 40) can be moved without overturning the vehicle body 2. Further, the work range setting unit 63 stores data on a workable range corresponding to the number of portable batteries 80 (in this example, any one of 0 to 3). The work range setting unit 63 selects workable range data according to the number of mounted portable batteries 80 from among the workable range data group based on the detection signal of the number of batteries mounted from the portable battery detector 120. Read out. Then, the work range setting unit 63 sets the read data of the workable range as a movable range of the tip of the boom 30 that is allowable based on the current number of portable batteries 80 mounted.

Note that the setting of the workable range (movable area) by the work range setting unit 63 includes initial setting and resetting. Initial settings are made at the start of work. Specifically, this is done based on the number of portable batteries 80 that are placed at the time when the lifting device in the retracted position starts operating (it is a necessary condition that the power source of the chassis is in the on state). . By performing the initial settings, work can be started with the workable range of the lifting device appropriately set according to the number of portable batteries 80 placed. Resetting may be performed when the number of mounted portable batteries 80 changes when work is restarted or during work (both of which require that the power source of the chassis is in an on state). By performing the reset, the workable range of the elevating device can be appropriately reset in response to a change in the number of portable batteries 80 mounted.

Figure 10 shows the various situations in which the operating cab is locked, while driving, the storage position with the bodywork power on, the storage position with the bodywork power off, the working position with the bodywork power on, and the working position with the bodywork power off. This shows whether the slot-in lock type locking is enabled or disabled. FIG. 10 also shows whether or not the workable range should be reset under each situation. As shown in Figure 10, the slot-in lock type locking is effective under various conditions: when the driving cab is locked, when driving, when the bodywork is powered on and working position, and when the bodywork power is turned off and working position. Ru. When the lock is validated, the portable battery 80 can be additionally placed, but the portable battery 80 cannot be taken out. Further, the slot-in lock type locking is invalid under the condition that the mount is in the retracted position with the power on, or in the retracted position with the mount power off. When the lock is disabled, additional placement of the portable battery 80 and removal of the portable battery 80 become possible. Theft of the portable battery 80 can be prevented by activating the lock when the driving cab is locked. Moreover, by making the locking effective under the conditions during driving, it becomes possible to prevent the portable battery 80 from falling off during driving.

In addition, the workable range is not reset under the following conditions: when the operating cab is locked, while driving, when the bodywork is in the stowed position with the power off, and when the bodywork is in the working position when the power is turned off. This is done under the following circumstances. Further, under the situation where the power of the chassis is on and the work posture is on, this is performed when the portable battery 80 is additionally placed.

Figure 11 shows the various situations in which the operating cab is locked, while driving, the storage position with the bodywork power on, the storage position with the bodywork power off, the working position with the bodywork power on, and the working position with the bodywork power off. This shows whether the door lock in the door lock type is enabled or disabled. FIG. 11 also shows whether or not the workable range should be reset under each situation. As shown in Figure 11, the door lock of the door lock type is the same as the locking lock of the slot-in lock type. It is said to be effective under various conditions such as working posture. When the lock is validated, neither additional placement of the portable battery 80 nor removal of the portable battery 80 becomes possible. In addition, the door lock of the door lock type is invalid under the conditions of the storage position with the mount power turned on or the storage position with the mount power OFF. When the lock is disabled, additional placement of the portable battery 80 and removal of the portable battery 80 become possible. By enabling the lock when the driving cab is locked, it is possible to prevent the portable battery 80 from being stolen; and by enabling the lock while driving, it is possible to prevent theft of the portable battery 80. Similar to the slot-in lock type, it is possible to prevent the portable battery 80 from falling off while traveling.

In addition, the workable range cannot be reset under the following conditions: when the driving cab is locked, while driving, in the retracted position with the bodywork power off, in the working position with the bodywork power on, and in the working position with the bodywork power off. This is done when the chassis is in the retracted position with the power on.

As explained above, in the aerial work vehicle 1, when the elevating device is not in the retracted position, removal of the portable battery 80 from the battery mounting space LS1 is restricted. Therefore, when the portable battery is taken out while the lifting device is in the working position, the center of gravity and weight balance of the aerial work vehicle 1 during work deteriorate, causing the aerial work vehicle 1 to become unstable and fall. This makes it possible to prevent an increase in the risk of

In the embodiment described above, when the lifting device is in the working position, the removal of the portable battery is restricted, but even in the working position, the stability of the vehicle body may be lowered than when the portable battery is taken out. If it is determined that the amount is small, the portable battery may be taken out.

In the embodiment described above, the locking member used for the slot-in lock type lock is provided on the vehicle body side, but the locking member may be provided on the portable battery side. Furthermore, instead of providing a mechanical locking member, the portable battery may be held by magnetic force, for example.

In the above-described embodiment, a truck-mounted aerial work vehicle has been described as an example of the working machine according to the present invention. However, the present invention is not limited to this, and the present invention is applicable to It is also applicable to work vehicles. Further, the present invention may be applied to other working vehicles such as a digging and pole-erecting vehicle and a crane vehicle. Further, the present invention is also applicable to working machines other than movable working vehicles, for example, working machines that are installed at a predetermined location and operate a working device (for example, a stationary high-altitude working machine).

1 High-altitude work vehicle 2 Vehicle body 10F Front jack 10R Rear jack 20 Swivel base 28 Boom pedestal 30 Boom 40 Work platform 52 Hydraulic pump 60 Controller 70 Fixed battery 80 Portable battery 102 Partition plate 103 Battery placement part 105 Battery locking Member 107 Lock device 108 Cover door lock device 110 Cover member 112 Cover door

Claims (5)

A work comprising a device support, a working device provided on the device support, and a portable battery, wherein the device support is provided with a battery placement part on which the portable battery is removably placed. It is a machine,
A working machine characterized in that the working machine is configured to restrict removal of the portable battery from the battery placement section if the posture of the working device does not satisfy a predetermined condition. The working machine according to claim 1, wherein the predetermined condition includes a condition that the working device is in a retracted position. a cover member that covers the plurality of portable batteries placed on the battery placement part and has an opening large enough to allow the portable batteries to be taken in and taken out, and a door that can open and close the opening;
a door closing lock device capable of locking the door in a closed state,
Claim 1 characterized in that the door is locked by the closing door locking device to restrict removal of the portable battery covered by the cover member from the battery placement part. The working machine described in. a locking member capable of locking the portable battery placed on the battery placement section;
a locking device capable of locking the locking member in a state in which the portable battery is locked;
The device is characterized in that the locking device is configured to lock the locking member to restrict removal of the portable battery locked by the locking member from the battery placement section. The working machine according to claim 1. According to any one of claims 1 to 4, the workable range of the working device can be set according to the number of the portable batteries placed on the battery placement part. working machine.

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