Work vehicle with display unit

Abstract

The invention provides a work vehicle with a display part. An operator can obtain required information through a monitor under the condition that the operator does not leave an operation part of an overhanging supporting leg. The present invention is provided with: a long object (3) provided to the upper part of a vehicle and capable of rotating relative to a vehicle body (2); a left-side overhang leg (6A) provided to the left-side surface of the vehicle body (2); a right-side overhang leg (6B) provided to the right-side surface of the vehicle body (2); and a left-side overhang leg operation unit (7A) provided to the left side of the vehicle body (2) and for operating the left-side overhang leg (6A). A right-side overhang leg operation part (7B) which is arranged on the right side of the right-side overhang leg (6B) and is used for operating the right-side overhang leg (6B); a left-side display part (10A) which is arranged near the left-side overhang leg operation part (7A); and a right-side display part (10B) which is arranged near the right-side overhang leg operation part (7B). The left and right-side display parts (10A, 10B) are used for displaying the working range of the long object (3) based on the extension amount of the overhang leg.

Description

Technical Field

[0001] The present invention relates to a work vehicle including a plurality of display units. Background Art

[0002] For example, in aerial work vehicles such as ladder trucks that carry long objects such as ladders and booms, the ladders and booms are extended, rotated, and raised with the outriggers extended and raised. The permitted operating range (operating radius) of the ladders and booms varies depending on the extent of outrigger extension.

[0003] Here, patent document 1 discloses a work vehicle comprising a vehicle body capable of traveling, a boom provided on the vehicle body, a work platform provided at the front end portion of the boom, an outrigger beam capable of extending to the side of the vehicle body, a crane retractably provided at the front end portion of the outrigger beam, a camera for acquiring image information around the vehicle body, an image processing unit for generating a surrounding display image representing the surroundings of the vehicle body in a bird's-eye view using the image information around the vehicle body acquired by the camera, and a lower display device for displaying the surrounding display image generated by the image processing unit, wherein the surrounding display image shows an operable range within which the work platform is allowed to move according to the amount of extension of the outrigger beam to the side of the vehicle body.

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2021-80039

[0005] After extending the outriggers, the outrigger operator determines the working range by feel, or by using a monitor installed near the base of the ladder or boom, if available. However, relying on feel can lead to misjudgment of the working range. This misjudgment necessitates readjustment of the outriggers and movement of the vehicle, delaying the start of the operation. Furthermore, while misjudgment of the working range is less likely when using a monitor installed near the base, the base is located on the vehicle body, making the monitor inaccessible from near the outrigger operating unit. This requires the operator to move to view the monitor, resulting in a loss of time.

[0006] In addition, Patent Document 1 describes that a lower operating device for operating the outrigger jack is provided at the center of the rear portion of the vehicle body, and a lower display device is provided near the lower operating device (paragraphs 0018, 0026, Figure 4 ), but in aerial work vehicles with a larger vehicle width, the operating parts of the outriggers and the crane are usually set on the left and right sides respectively instead of being set in the center, so it cannot be applied to such aerial work vehicles. Summary of the Invention

[0007] Therefore, an object of the present invention is to provide a work vehicle with a display unit in which an operator can obtain necessary information through a display unit (display device) without leaving the operator's position on the outriggers.

[0008] The work vehicle with a display unit of the present invention described in Technical Solution 1 is characterized in that it comprises: a long object 3, which is arranged on the upper part of the vehicle and can rotate relative to the vehicle body 2; a left outrigger 6A, which is arranged on the left surface of the vehicle body 2; a right outrigger 6B, which is arranged on the right surface of the vehicle body 2; a left outrigger operating unit 7A, which is arranged on the left side of the vehicle body 2 and is used for operating the left outrigger 6A; a right outrigger operating unit 7B, which is arranged on the right side of the vehicle body 2 and is used for operating the right outrigger 6B; a left display unit 10A, which is arranged near the left outrigger operating unit 7A; and a right display unit 10B, which is arranged near the right outrigger operating unit 7B, and the operating range of the long object 3 achieved based on the extension amount of the outrigger is displayed on the left display unit 10A and the right display unit 10B.

[0009] The present invention described in Technical Solution 2 is characterized in that in the work vehicle with a display unit described in Technical Solution 1, the long object 3 has a work platform 5 for people to ride at the front end, and the left display unit 10A and the right display unit 10B have a load input screen for receiving the input of the number of passengers or the passenger weight on the work platform 5, and display the work range corresponding to the number of passengers or the passenger weight entered in the load input screen.

[0010] The present invention described in Technical Solution 3 is characterized in that in the work vehicle with a display unit described in Technical Solution 1, the left display unit 10A and the right display unit 10B have an operation screen for operating the device or equipment mounted on the vehicle. When the operation screen is called or switched to another operation screen in either the left display unit 10A or the right display unit 10B, the same operation screen as the called operation screen or the switched operation screen is displayed on the other left display unit 10A or the right display unit 10B.

[0011] The present invention described in Technical Solution 4 is characterized in that in the work vehicle with a display unit described in Technical Solution 3, when an operation on a device or equipment is selected in either the operation screen in the left display unit 10A or the operation screen in the right display unit 10B, the other left display unit 10A or the right display unit 10B becomes an operation lock state that does not accept operations on the device or equipment.

[0012] The present invention described in claim 5 is characterized in that, in the work vehicle with a display unit described in claim 4 , the other left display unit 10A or right display unit 10B in the operation-locked state displays that the operation is in progress.

[0013] The present invention described in Technical Solution 6 is characterized in that, in the work vehicle with a display unit described in Technical Solution 5, a lock release switch 14 is displayed on the other left display unit 10A or the right display unit 10B that has become an operation lock state, and if the lock release switch 14 is pressed when no operation is performed on the device or equipment in one left display unit 10A or the right display unit 10B, the operation lock state is released.

[0014] According to the present invention, it is possible to provide a work vehicle equipped with a display unit in which an operator can obtain necessary information through the display unit without leaving the operating unit of the outriggers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an external view of a work vehicle with a display unit according to an embodiment of the present invention.

[0016] Figure 2 This is a photo showing the area around the right display unit.

[0017] Figure 3 It is a diagram showing monitors of the left display unit and the right display unit.

[0018] Figure 4 It is a diagram showing monitors of the left display unit and the right display unit.

[0019] Figure 5 It is a perspective view showing a state where the ladder and outriggers are deployed.

[0020] Figure 6 It is a perspective view showing the base operating seat.

[0021] Figure 7 It is a left side view of a work vehicle with a display unit according to another embodiment of the present invention. DETAILED DESCRIPTION

[0022] The work vehicle with a display unit involved in the first embodiment of the present invention includes: an elongated object, which is arranged on the upper part of the vehicle and can be rotated relative to the vehicle body; a left outrigger, which is arranged on the left surface of the vehicle body; a right outrigger, which is arranged on the right surface of the vehicle body; a left outrigger operating unit, which is arranged on the left side of the vehicle body and is used for operating the left outrigger; a right outrigger operating unit, which is arranged on the right side of the vehicle body and is used for operating the right outrigger; a left display unit, which is arranged near the left outrigger operating unit; and a right display unit, which is arranged near the right outrigger operating unit, and the working range of the elongated object achieved based on the extension amount of the outrigger is displayed on the left display unit and the right display unit.

[0023] According to this embodiment, the operating range of the long object is displayed on the left and right display units, respectively, located near the left and right outrigger operating units. This allows the outrigger operator to confirm the operating range without leaving the location. This prevents misjudgment of the operating range, allows efficient outrigger extension operations, and allows for rapid preparation for firefighting or rescue operations using the long object.

[0024] The second embodiment of the present invention is configured as a work vehicle with a display unit involved in the first embodiment, wherein the long object has a work platform for people to ride at the front end, and the left display unit and the right display unit have a load input screen for receiving the number of passengers or the weight of passengers on the work platform, and display the work range corresponding to the number of passengers or the weight of passengers entered in the load input screen.

[0025] According to this embodiment, the operating range of the long object changes according to the number of passengers (passenger weight) on the work platform. Therefore, the operator of the outrigger can accurately grasp the operating range without leaving the position where the outrigger is operated by inputting the actual number of passengers (passenger weight).

[0026] The third embodiment of the present invention is configured as follows: in the work vehicle with a display unit involved in the first embodiment, the left display unit and the right display unit have an operation screen for operating the device or equipment mounted on the vehicle, and when the operation screen is called or switched to another operation screen in either the left display unit or the right display unit, the same operation screen as the called operation screen or the switched operation screen is displayed on the other left display unit or the right display unit.

[0027] According to the present embodiment, it is possible to suppress simultaneous operations on devices and equipment mounted on the vehicle from the left and right display units, thereby preventing malfunctions of the devices and equipment.

[0028] The fourth embodiment of the present invention is configured as follows: in the work vehicle with a display unit involved in the third embodiment, when an operation on a device or equipment is selected in either the operation screen in the left display unit or the operation screen in the right display unit, the other left display unit or the right display unit becomes an operation lock state in which the operation on the device or equipment is not accepted.

[0029] According to this embodiment, when an operation is performed in either the left display unit or the right display unit, the operation in the other one will be restricted, thereby more reliably preventing different operations from being performed on the devices and equipment mounted on the vehicle in the left display unit and the right display unit.

[0030] A fifth embodiment of the present invention is configured such that, in the work vehicle with a display unit according to the fourth embodiment, the operation-locked state is displayed on the other left display unit or the right display unit that has entered the operation-locked state.

[0031] According to this embodiment, the operator can immediately understand that the left display unit or the right display unit has become an operation-locked state, and can therefore smoothly proceed with the work without wasting time on useless confirmations based on misunderstandings such as whether the left display unit or the right display unit is faulty, an operational error, etc.

[0032] The sixth embodiment of the present invention is configured as follows: in the work vehicle with a display part involved in the fifth embodiment, a lock release switch is displayed on the other left display part or the right display part that has become an operation lock state; if the lock release switch is pressed when no operation is performed on the device or equipment in one left display part or the right display part, the operation lock state is released.

[0033] According to this embodiment, when lock release is required, it can be released even from one of the left display unit and the right display unit that has entered the operation-locked state, thereby improving work efficiency.

[0034] Hereinafter, a work vehicle with a display unit according to an embodiment of the present invention will be described.

[0035] Figure 1 This is an external view of a work vehicle with a display unit according to this embodiment. Figure 1 (a) is the front stereogram, Figure 1 (b) is the rear stereogram, Figure 1 (c) is the rear view. Figure 2 This is a photo showing the area around the right display. Figure 2 (a) is a photo taken from the left rear. Figure 2 (b) is a photo taken from the rear.

[0036] The work vehicle with a display unit in this embodiment is a ladder fire truck. This aerial work vehicle, one type of aerial work vehicle, includes: a cab 1 with a driver's seat located at the front of the vehicle; a vehicle body 2 located rearward of the cab 1; a ladder (long object) 3 positioned above the cab 1 and vehicle body 2 and lying flat when not in use; a gyroscopic turntable 4 located on the rear upper surface of the vehicle body 2; a hanging basket (work platform) 5 mounted on the front end of the ladder 3; a left outrigger 6A located at one front and one rear end of the left side of the vehicle body 2; a right outrigger 6B located at one front and one rear end of the right side of the vehicle body 2; a left outrigger operating unit 7A located on the left rear portion of the vehicle body 2 for operating the left outrigger 6A; a right outrigger operating unit 7B located on the right rear portion of the vehicle body 2 for operating the right outrigger 6B; a base operator's seat 8 located adjacent to the base of the ladder 3; and a plurality of hose connection ports 9 for connecting fire hoses.

[0037] The ladder 3 has multiple steps, can rotate and rise and fall relative to the vehicle body 2, and is connected to the vehicle body 2 via a gyroscopic turntable 4. In addition, the left outrigger 6A and the right outrigger 6B each include a jack for height adjustment.

[0038] Furthermore, display units including monitors (displays) for displaying various information and the like are disposed on the basket 5, the base operating seat 8, and the rear surface of the vehicle, respectively.

[0039] The rear display unit 10, a display unit located on the rear surface of the vehicle, is composed of a left display unit 10A located near the left outrigger operating unit 7A and a right display unit 10B located near the right outrigger operating unit 7B. The left display unit 10A is connected to the left outrigger operating unit 7A, and the right display unit 10B is connected to the right outrigger operating unit 7B. The left display unit 10A and the right display unit 10B display the extension amount of the outriggers 6A and 6B, the status of the jacks, and display switching icons.

[0040] In aerial work vehicles with relatively wide vehicle widths, such as ladder trucks, the outrigger and jack operating units are typically located on the left and right sides of the vehicle's rear surface, as in this embodiment, so that the operator can confirm the actual operating status while operating. Therefore, if a monitor is located in the center of the vehicle's rear surface, for example, the operator needs to move from the side of the vehicle's rear surface (where the operating unit is located) to the center (where the monitor is located) to confirm the various information displayed on the monitor while operating the outriggers or jack.

[0041] In contrast, in this embodiment, the rear display unit 10 is provided near the left outrigger operating unit 7A and the right outrigger operating unit 7B, respectively. This allows the operator to operate the outriggers 6A, 6B and the jack while checking various information displayed on the rear display unit 10. This improves the efficiency of operations involving the outriggers 6A, 6B and the jack, and allows for quick preparations for starting firefighting or rescue operations using the ladder 3.

[0042] In addition, the left display unit 10A and the left outrigger operating unit 7A, as well as the right display unit 10B and the right outrigger operating unit 7B, are stored in the vehicle body 2 when not in use. Figure 2 The figure shows a state where the cover 11 is opened. In this way, the vehicle can be stored in the vehicle body 2 when not in use, thereby preventing the rear display unit 10 and the outrigger operating units 7A and 7B from being soiled while the vehicle is traveling.

[0043] Figure 3 and Figure 4 This is a diagram showing the monitor of the rear display unit. Figure 3 (a) and Figure 4 (a) is the monitor on the left side. Figure 3 (b) and Figure 4 (b) is the monitor of the right display unit.

[0044] The monitor of the rear display unit 10 is a touch panel with both display and input functions. By touching icons, etc., it is possible to display and confirm the working range (front and back / left and right), the tilt angle of the vehicle body 2 (front and back / left and right), the extension amount of the outriggers 6A and 6B, the setting / storage / operation status of the jack, the attention / warning of the tilt of the vehicle body 2, the status of the gyro turntable 4, the status of the outriggers 6A and 6B and the jack, the status of the basket 5, the status of the ladder 3, the vehicle status, the emergency stop status, the operation lock status, the basket pressure (the outlet pressure at the basket 5), etc. ), base flow (water flow at the base of the ladder 3), and water port pressure (water supply pressure at the hose connection port 9 on the rear surface of the vehicle), and can display information screens such as switching of load modes, switching of the interlocking operation modes of the outriggers 6A, 6B and the crane, emergency contact to other display units (the workbench display unit 17 and the base display unit 19 described later), start / shutdown operation of the auxiliary engine, manual operation of the basket 5 and the gyro turntable 4 during maintenance, and release operation of the operation lock state.

[0045] As described above, in work using the ladder 3 , the left and right permissible work ranges (work radius) vary depending on the extension amount of the outriggers.

[0046] In this embodiment, the operating range based on the extension amount of the outriggers 6A and 6B is displayed on the rear display unit 10, which is located near the left outrigger operating unit 7A and the right outrigger operating unit 7B, respectively. This allows the operator of the outriggers 6A and 6B to confirm the operating range without leaving the left outrigger operating unit 7A or the right outrigger operating unit 7B. This prevents misjudgment of the operating range, allows efficient extension of the outriggers 6A and 6B, and allows for quick preparation for starting firefighting or rescue operations using the ladder 3.

[0047] In addition, the permitted operating range also changes according to the number of passengers (riding weight) of the hanging basket 5, and therefore, a load input screen for accepting input of the number of passengers or the riding weight of the hanging basket 5 is provided on the rear display unit 10 as a switch for the load mode. In addition, the load input screen allows the selection of inputting the number of passengers or the riding weight, or the direct input of the number of passengers or the riding weight.

[0048] When the operator of the outriggers 6A and 6B inputs the number of passengers or the passenger weight on the load input screen, a controller (not shown) connected to the rear display unit 10 calculates the operating range based on the input number of passengers or the passenger weight, and outputs the obtained operating range data to the rear display unit 10. As a result, the operating range in the load mode after the switch is displayed on the rear display unit 10, allowing the operator of the outriggers 6A and 6B to accurately grasp the operating range corresponding to the number of passengers (passenger weight) without leaving the position where they are operating the outriggers 6A and 6B.

[0049] The left and right display units 10A, 10B have the function of operating devices or equipment (mounted items) mounted on the vehicle. For example, during maintenance of the ladder truck, the rear display unit 10 can be used to manually operate the basket 5, gyroscopic turntable 4, and other devices. The left and right display units 10A, 10B have the same operating functions, allowing a single operator to use both rear display units 10 depending on the task, or two operators to use different rear display units 10 to perform their tasks, thereby improving work efficiency.

[0050] On the other hand, if different operational inputs are simultaneously made to a device or equipment from each of the left display unit 10A and the right display unit 10B, or if operational inputs are simultaneously made to different devices or equipment, the devices or equipment receiving the operational inputs may malfunction or operate unexpectedly. Therefore, the rear display unit 10 is provided with a display synchronization function and a display interlock function to enable internal operation restrictions and sharing between the left display unit 10A and the right display unit 10B.

[0051] The display synchronization function is a function that, when calling or switching to an operation screen is selected on either the left display unit 10A or the right display unit 10B, the other rear display unit 10 also simultaneously switches to the operation screen. The display synchronization function can be implemented, for example, by combining operation-related signals from the left display unit 10A and the right display unit 10B into a single signal and transmitting it to a controller, and then outputting the same display signal from the controller to the left display unit 10A and the right display unit 10B after receiving the operation signal.

[0052] exist Figure 3 This example is shown in FIG. 1 . When the left display section 10A ( Figure 3 (a)) and the right display unit 10B ( Figure 3 In the case where the screen (information screen) shown in the upper layer is displayed, if the screen switching switch 12 is pressed in the left display unit 10A, the screen of the left display unit 10A is switched to display the operation screen. At the same time, the right display unit 10B where the screen switching switch 12 is not pressed is automatically switched to the same display (operation screen) as the left display unit 10A.

[0053] In this way, when a switch to an operation screen is performed on one rear display unit 10 (here, the left display unit 10A), the screen of the other rear display unit 10 (here, the right display unit 10B) is also automatically switched to the same operation screen, so that the operator who observes the other rear display unit 10 can understand that the operation is being performed on one rear display unit 10, thereby preventing the simultaneous operation of the devices and equipment mounted on the vehicle from the left display unit 10A and the right display unit 10B, and preventing malfunction of the devices and equipment in advance.

[0054] The display interlock function is a function that, when an operation is performed on a device or equipment in either the left display unit 10A or the right display unit 10B, sets the other display unit to an operation-locked state in which the operation is not accepted and displays the operation-locked state.

[0055] exist Figure 4 This example is shown in FIG. 1 . When the left display section 10A ( Figure 4 (a)) and the right display unit 10B ( Figure 4(b)) When the screen (operation screen) shown in the upper layer is displayed, if one of the operation mode switches 13 (for example, the manual mode of the hanging basket) is pressed in the left display part 10A, the mode is switched in the left display part 10A, and the color of the pressed operation mode switch 13 changes to a state indicating that the mode has been selected, and any operation can be continued. On the other hand, in the right display part 10B, it automatically switches to the interlock screen, and becomes an operation lock state in which there is no response even if the operation mode switch 13 is pressed, and the operation lock state is displayed, so the color of the part where the operation mode switch 13 is displayed becomes lighter, and a lock and hand icon are displayed. In addition, in the right display part 10B, the color of the operation mode switch 13 selected in the left display part 10A also changes, so that the mode selected in the left display part 10A can be grasped.

[0056] Thus, when an operation is performed on one rear display unit 10 (here, the left display unit 10A), the operation on the other rear display unit 10 (here, the right display unit 10B) is restricted, thereby more reliably preventing different operations from being performed on the devices and equipment mounted on the vehicle on the left display unit 10A and the right display unit 10B.

[0057] In addition, the operation lock state is displayed on the rear display unit 10 that has become the operation lock state, so the operator can immediately understand that the left display unit 10A or the right display unit 10B has become the operation lock state, and can smoothly proceed with the work without wasting time on useless confirmation based on speculation about whether the rear display unit 10 is malfunctioning, an operational error, etc.

[0058] like Figure 4 As shown in the lower layer of (b), the right display unit 10B is displayed with a lock release switch 14 in the operation lock state. If the lock release switch 14 is pressed without performing any operation on the device or equipment in the left display unit 10A, the operation lock state of the right display unit 10B is released.

[0059] Thus, the lock can be released from the right display unit 10B. Therefore, when working at a location closer to the right display unit 10B than the left display unit 10A, there is no need to go to the left display unit 10A specifically to release the lock, thereby improving work efficiency.

[0060] Figure 5 This is a perspective view showing the ladder and outriggers deployed. Figure 6 It is a perspective view showing the base operating seat.

[0061] In addition to the workbench display unit 17, which serves as a display unit, the hanging basket 5 is also provided with a water discharge gun 15 for discharging water toward a building, etc., and a workbench operating unit 16, which serves as an operating unit for operating the ladder 3, hanging basket 5, and water discharge gun 15. The workbench operating unit 16 is, for example, an operating lever or an operating switch. The workbench display unit 17 is connected to the workbench operating unit 16 and is disposed adjacent thereto.

[0062] In addition to the base display unit 19, which serves as a display unit, the base operating station 8 is also provided with a base operating unit 18, which serves as an operating unit for operating the ladder 3, the hanging basket 5, the water gun 15, and the like. The base operating unit 18 is, for example, an operating lever, an operating pedal, or an operating switch. The base display unit 19 is connected to the base operating unit 18 and is disposed adjacent thereto.

[0063] The monitor of the workbench display unit 17 and the monitor of the base display unit 19 can be a touch panel type with both display and input functions or a non-touch panel type without input functions. Each monitor can display information such as the working range (front / back / left / right), the tilt angle of the vehicle body 2 (front / back / left / right), the extension amount of the outriggers 6A and 6B, the warning / alert of the tilt of the vehicle body 2, the status of the gyroscopic turntable 4, the status of the basket 5, the status of the ladder 3, the vehicle status, the emergency stop status, the operation lock status, the basket pressure (the outlet pressure at the basket 5), the base flow rate (the water flow rate at the base of the ladder 3), and the water outlet pressure (the water pressure at the hose connection port 9 on the rear surface of the vehicle). In addition, the monitor can display operation screens such as switching load modes, emergency communication to other display units (such as the rear display unit 10) via a buzzer, and starting or stopping the self-defense spray in the basket 5. In the case of a touch panel monitor, operation icons are displayed on the operation screen, whereas in the case of a non-touch panel monitor, physical buttons for input operations are arranged near the monitor instead of the operation icons.

[0064] The ladder 3 , the hanging basket 5 , and the water gun 15 can be similarly operated from any of the work platform operation unit 16 and the base operation unit 18 , or the work display unit 17 and the base display unit 19 .

[0065] The operations of the water gun 15 include switching in up and down directions, switching in left and right directions, switching in firing modes, and the like.

[0066] There are two modes for operating the ladder 3 and the hanging basket 5: a manual operation mode and a high-function operation mode. The manual operation mode is a mode in which the ladder 3 is manually extended, extended, lowered, and rotated, and the hanging basket 5 is moved. The high-function operation mode enables the controller to perform some or all of the operations on the ladder 3 and the hanging basket 5. It can easily perform operations such as automatically returning the unfolded ladder 3 to the storage position, storing the manually performed operations on the ladder 3 in a storage device (teaching memory), reproducing or reversing the operations and automatically moving the ladder 3, and making the hanging basket 5 rise or fall approximately vertically or move forward or backward approximately horizontally through a switch or lever.

[0067] On the other hand, if operation inputs are simultaneously performed from both the hanging basket side (the work platform operation unit 16 or the work platform display unit 17) and the base operating seat side (the base operation unit 18 or the base display unit 19), the ladder 3, etc., may malfunction or unexpectedly move. Therefore, an interlocking function is provided between the work platform operation unit 16 and the base operation unit 18. Similarly to the rear display unit 10 described above, a display synchronization function and a display interlocking function are provided between the work platform display unit 17 and the base display unit 19.

[0068] Regarding the operation of the water gun 15, if the water gun 15 is operated from either the basket side (the work platform operation unit 16 or the work platform display unit 17) or the base operator's seat side (the base operation unit 18 or the base display unit 19), the other side enters an operation-locked state, preventing the water gun 15 from being operated, due to an interlock function and a display interlock function. For example, if the water gun 15 is being operated from the work platform operation unit 16, the base operation unit 18 and the base display unit 19 enter an operation-locked state. This prevents the water gun 15 from being operated simultaneously from both the basket side and the base operator's seat side, thus preventing malfunctions of the water gun 15.

[0069] Furthermore, in this embodiment, when the water discharge gun 15 is operated on either the hanging basket side (the work platform operation unit 16 or the work platform display unit 17) or the base operating station side (the base operation unit 18 or the base display unit 19), the display synchronization function causes not only the display unit on the side being operated, but also the display unit on the side not being operated to switch to a water discharge information screen primarily displaying information related to water discharge. For example, when the water discharge gun 15 is operated on the work platform operation unit 16, not only the work platform display unit 17 but also the base display unit 19 automatically switches to the water discharge information screen. This automatically switches the screen on the display unit on the side not operating the water discharge gun 15 to the water discharge information screen, allowing firefighters viewing that screen to understand that the water discharge gun 15 is being operated on the other side.

[0070] Regarding the operation of the ladder 3 and the hanging basket 5, when an operation based on the high-function operation mode is performed on either the hanging basket side (the operating unit 16 for the workbench or the display unit 17 for the workbench) or the base operating seat side (the operating unit 18 for the base or the display unit 19 for the base), the other side becomes an operation lock state that does not accept the operation of the ladder 3 and the hanging basket 5 through the interlock function and the display interlock function. For example, when an operation of the ladder 3 based on the high-function operation mode is performed on the operating unit 16 for the workbench, the operating unit 18 for the base and the display unit 19 for the base become an operation lock state. As a result, there will be no situation where the operation based on the high-function operation mode is performed on the ladder 3 or the hanging basket 5 from both the hanging basket side and the base operating seat side, and malfunction of the ladder 3 and the hanging basket 5 can be prevented.

[0071] Furthermore, in this embodiment, when an operation based on the high-function operation mode is being performed on either the basket side or the base operator's seat side, the display synchronization function causes not only the display unit on the side where the operation is being performed, but also the display unit on the side where the operation is not being performed to switch to a ladder / basket information screen that primarily displays information related to the ladder 3 and basket 5. For example, when an operation based on the high-function operation mode is initiated on the workbench operating unit 16, not only the workbench display unit 17 but also the base display unit 19 automatically switches to the ladder / basket information screen. Thus, the screen on the display unit on the side where the operation based on the high-function operation mode is not being performed automatically switches to the ladder / basket information screen, allowing firefighters and others viewing this screen to understand that an operation based on the high-function operation mode is being performed on the other side.

[0072] Furthermore, in this embodiment, when the water gun 15 is operated or the ladder 3 or the hanging basket 5 is operated based on the high-function operation mode on either the hanging basket side (the operating unit 16 for the workbench or the display unit 17 for the workbench) or the base operating seat side (the operating unit 18 for the base or the display unit 19 for the base), an interlock icon indicating that the operating unit and the display unit are in an operation-locked state is displayed on the monitor of the other display unit.

[0073] As a result, firefighters on the side that has become operationally locked can immediately understand that the operation unit and display unit have become operationally locked, and can smoothly carry out firefighting operations without wasting time on useless confirmation based on speculation about whether the operation unit or display unit is faulty.

[0074] Furthermore, a lock release switch that receives an operation to release the operation lock state may be provided on the workbench display unit 17 and the base display unit 19. In this case, when either the basket side or the base operating seat side is in the operation lock state, if the lock release operation switch on the side in the operation lock state is pressed, the operation lock state is released unless the water discharge gun 15 is being operated or the ladder 3 or basket 5 is being operated in the high-function operation mode.

[0075] Next, a work vehicle with a display unit according to another embodiment of the present invention will be described. Components having the same functions as those in the above embodiment are denoted by the same reference numerals and their description will be omitted.

[0076] Figure 7 It is a left side view of the work vehicle with a display unit according to this embodiment.

[0077] The work vehicle with a display unit in this embodiment is a fire pump truck. The fire pump truck includes a cab 1 and a pump unit 20 located behind the cab 1. The pump unit 20 includes a water pump driven by a PTO or other means; a CAFS (Compressed Air Foam System); a pump speed control unit 21 for operating the water pump speed; a display unit (pump display unit 22) with a monitor that displays various information; a water outlet 23; a water intake 24; and a transfer port 25. The pump speed control unit 21, such as a throttle dial, is connected to the pump display unit 22.

[0078] In addition, Figure 7 While the left side of the vehicle is shown in the figure, a pump speed control unit 21, a pump display unit 22, a water outlet 23, a water intake 24, and a transfer port 25 are also arranged on the right side of the vehicle. Fire hoses 26 (discharge hose, water intake hose, transfer hose) are connected to the water outlet 23, water intake 24, and transfer port 25, respectively.

[0079] The pump display unit 22 is arranged near the pump speed operating unit 21. The monitor of the pump display unit 22 can be a touch panel type with both display and input functions, or a non-touch panel type without input functions. The monitor can display an information display screen that can confirm the open and closed status of the water outlet 23 / water intake 24 / transfer port 25, the water discharge flow rate, the water discharge pressure, the operation lock status, and the water discharge warning, and can also display an operation screen for setting the water discharge pressure, setting the upper limit of the pump speed, fixing the pump speed, using CAFS transmission, and switching screens. In addition, if the monitor is a touch panel type, operation icons are displayed on the operation screen. In the case of a non-touch panel type monitor, physical buttons for input operations are arranged near the monitor instead of the operation icons.

[0080] As described above, the pump speed operation unit 21 and the pump display unit 22 are provided on the left and right sides of the vehicle, respectively. Therefore, the water pump and CAFS can be operated from either the left or right side of the vehicle.

[0081] On the other hand, if the water pump and CAFS are operated simultaneously from both the left and right sides of the vehicle, firefighting operations may not proceed as expected. Therefore, an interlock function is provided between the pump speed control unit 21 on the left side and the pump speed control unit 21 on the right side. Similarly to the above-mentioned embodiment, a display synchronization function and a display interlock function are provided between the pump display unit 22 on the left side and the pump display unit 22 on the right side.

[0082] Regarding the operation of the pump speed operating unit 21, when the pump speed is manipulated on either the left or right side pump speed operating unit 21, the interlock function locks the other pump speed operating unit 21 into an operation-locked state, preventing manipulation from being performed simultaneously on both the left and right sides.

[0083] Furthermore, in this embodiment, when the pump speed is manipulated on either the left or right pump speed control unit 21, the display synchronization function causes not only the pump display unit 22 on the side being manipulated but also the pump display unit 22 on the side not being manipulated to transition to a water pump information screen primarily displaying information related to the pump status, including the pump speed. For example, when the left pump speed control unit 21 is manipulated, not only the left pump display unit 22 but also the right pump display unit 22 automatically switches to the water pump information screen. This automatically switches the screen on the pump display unit 22 on the side not being manipulated to the water pump information screen, allowing firefighters or others viewing that screen to understand that the pump speed control unit 21 is being manipulated on the other side.

[0084] Regarding the operation of CAFS, when calling the CAFS mode screen for operating CAFS or switching to the CAFS mode screen is selected in any one of the pump display units 22 on the left surface and the right surface, the other pump display unit 22 also migrates to the CAFS mode screen at the same time through the display synchronization function.

[0085] In this way, when a switch to the CAFS mode screen is performed on one pump display unit 22, the screen of the other pump display unit 22 is also automatically switched to the CAFS mode screen, so that the firefighter observing the other pump display unit 22 can master the operations performed in the CAFS mode on one pump display unit 22, thereby suppressing the simultaneous launch operations in the CAFS mode from the two pump display units 22 and smoothly promoting the fire-fighting operation.

[0086] In addition, the launch methods in CAFS mode include wet bubble launch, dry bubble launch, and launch of a mixture of medicine and water.

[0087] In addition, when the emission operation in the CAFS mode is performed in any one of the pump display units 22 on the left surface and the right surface, the other pump display unit 22 becomes an operation lock state that does not accept operations on the CAFS through the display interlock function, and an interlock icon indicating the operation lock state is displayed on the monitor.

[0088] Thus, when CAFS mode transmission is performed in any one pump display unit 22, CAFS operation in the other pump display unit 22 is restricted, thereby more reliably preventing CAFS mode transmission operations from being performed simultaneously in two pump displays 22.

[0089] In addition, the operation lock state is displayed on the pump display unit 22 that has become the operation lock state, so firefighters can immediately understand that the pump display unit 22 has become the operation lock state, and can smoothly carry out fire fighting operations without wasting time on useless confirmation based on speculation about whether the pump display unit 22 is malfunctioning, an operational error, etc.

[0090] In addition, when the cylinder end pressure (water discharge pressure) of the fire hose 26 connected to the water outlet 23 is set in any one of the pump display units 22 on the left surface and the right surface, the other pump display unit 22 becomes a set value locked state that does not accept the change operation of the set value of the water discharge pressure, and an interlock icon indicating the set value locked state is displayed on the monitor.

[0091] This can suppress unintended changes in the water discharge pressure, thereby improving the safety of firefighters who are performing firefighting activities while holding the barrel end of the fire hose 26 .

[0092] Furthermore, a lock release switch that receives a release operation for releasing the operation lock state or the setting value lock state may be provided on the pump display unit 22. In this case, if the lock release switch is pressed while the pump display unit 22 is in the operation lock state or the setting value lock state, the operation lock state or the setting value lock state is released unless water discharge is in progress.

[0093] A part or all of the above-mentioned embodiments may also be described as the following supplementary notes.

[0094] [Note 1]

[0095] A work vehicle with a display unit, characterized in that:

[0096] A display unit having an operation screen for operating a device or equipment mounted on the vehicle is provided at a plurality of locations.

[0097] When the operation screen is called or switched to another operation screen in any one of the plurality of display units, the operation screen identical to the called operation screen or the switched operation screen is displayed on the other display units.

[0098] [Note 2]

[0099] The work vehicle with a display unit according to Supplementary Note 1 is characterized in that:

[0100] When an operation on the above-mentioned device or the above-mentioned equipment is performed in the above-mentioned operation screen of any one of the multiple display units, or the above-mentioned operation unit connected to the above-mentioned display unit, the other above-mentioned display units, or the above-mentioned operation units connected to the other above-mentioned display units, become an operation lock state that does not accept operations on the above-mentioned device or the above-mentioned equipment.

[0101] [Note 3]

[0102] The work vehicle with a display unit according to Supplementary Note 2 is characterized in that:

[0103] The fact that the operation is locked is displayed on the display unit that has entered the operation-locked state or on the display unit connected to the operation unit that has entered the operation-locked state.

[0104] [Note 4]

[0105] The work vehicle with a display unit according to Supplementary Note 3 is characterized in that:

[0106] A lock release switch is displayed on the display portion displaying the operation lock state, and when the lock release switch is pressed while no operation is being performed on the device or the equipment in the display portion or the operation portion that is not in the operation lock state, the operation lock state is released.

[0107] [Note 5]

[0108] The work vehicle with a display unit according to Supplementary Note 1 is characterized in that:

[0109] It also includes: a pump device having a water pump; and a hose for releasing water discharged from the pump device,

[0110] When the cylinder end pressure of the hose is set via the operation screen on any one of the plurality of display units, the other display units enter a setting value locked state in which the setting value of the cylinder end pressure cannot be changed.

[0111] Industrial applicability

[0112] The present invention can be applied to aerial work vehicles that extend outriggers when using long objects such as ladders and booms. In particular, the presence of left and right display units allows information on the rear display to be viewed from either side of the vehicle. This makes it useful in aerial ladder fire trucks where the hose connection port is located at the rear of the vehicle and the fire hose connected to the hose connection port obstructs left and right movement and visibility.

[0113] Furthermore, the present invention can be applied to work vehicles that allow operation of a single device or equipment from multiple locations. In particular, it is useful in fire trucks where ladders, hoses, and the like can be operated from both the work platform and the base operator's seat, and in fire pump trucks where pump systems can be operated from both sides of the vehicle.

[0114] Description of Reference Numerals

[0115] 2…vehicle body; 3…long object (ladder); 5…work platform (hanging basket); 6A…left outrigger; 6B…right outrigger; 7A…left outrigger operating unit; 7B…right outrigger operating unit; 10A…left display unit; 10B…right display unit; 14…lock release switch.

Claims

1. A working vehicle with a display unit, characterized in that: have: A long object, which is arranged on the upper part of the vehicle and can rotate relative to the vehicle body; A left outrigger is provided on the left side surface of the vehicle body; A right outrigger, arranged on the right side surface of the vehicle body; A left outrigger operating unit, disposed on the left side of the vehicle body and used for operating the left outrigger; A right outrigger operating unit, disposed on the right side of the vehicle body and used for operating the right outrigger; A left display unit is arranged near the left outrigger operating unit; as well as The right display unit is arranged near the right outrigger operating unit. The left display unit and the right display unit display an operation range of the long object based on the extension amount of the outriggers.

2. The work vehicle with a display unit according to claim 1, characterized in that: The long object has a work platform at the front end for people to sit on. The left display unit and the right display unit include a load input screen for receiving input of the number of passengers or the weight of passengers on the work platform, and display the work range corresponding to the number of passengers or the weight of passengers input on the load input screen.

3. The work vehicle with a display unit according to claim 1, characterized in that: The left display unit and the right display unit have operation screens for operating a device or equipment mounted on the vehicle. When the operation screen is called or switched to another operation screen in either the left display unit or the right display unit, the operation screen identical to the called operation screen or the switched operation screen is displayed in the other left display unit or the right display unit.

4. The work vehicle with a display unit according to claim 3, characterized in that: When an operation on the device or the equipment is selected in either the operation screen in the left display unit or the operation screen in the right display unit, the other left display unit or the right display unit becomes an operation lock state that does not accept operations on the device or the equipment.

5. The work vehicle with a display unit according to claim 4, characterized in that: The fact that the operation is locked is displayed on the other of the left display section or the right display section that has been in the operation-locked state.

6. The work vehicle with a display unit according to claim 5, characterized in that: A lock release switch is displayed on the other left display unit or the right display unit that has become the operation locked state. If the lock release switch is pressed when no operation is performed on the device or the equipment in one of the left display unit or the right display unit, the operation locked state is released.

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