JP7356328B2 - compaction vehicle - Google Patents

Description

The present invention relates to a rolling stock vehicle.

In this type of compaction vehicle, a steering wheel and an instrument panel are installed in front of the driver's seat, and on the instrument panel there are instruments that display the status of the vehicle, as well as controls for running the vehicle and operating the compaction work. Various switches are provided for this purpose. The operator seated in the driver's seat adjusts the vehicle's course by steering the steering wheel, and also operates the forward/reverse levers placed on the left and right sides of the steering wheel to move the vehicle forward or backward. The road surface is compacted by compaction wheels. During this compaction work, the operator monitors the vehicle status based on the instrument displays, such as the engine cooling water temperature and remaining fuel level, and performs the necessary switch operations for running the vehicle and compaction work, such as changing the running speed. It performs Hi/Lo switching, ON/OFF of hazard lamps, selection of watering mode, ON/OFF of vibration device, etc. (see Patent Document 1, for example).

Figure 5 is a diagram showing the steering wheel and instrument panel as seen from an operator seated in the driver's seat in a conventional compaction vehicle.Based on this diagram, the arrangement of instruments and various types of switches on the instrument panel will be explained. do.

This conventional compaction vehicle has a combined vibrating roller 101 in which a front body 4 and a rear body 5 are connected via an articulating mechanism, and a driver's seat (not shown) is provided on the rear body 5, and the driver's seat (not shown) is located on the front side of the vehicle. A steering wheel 12 and an instrument panel 102 are provided on an upright driver's cab 9. A water temperature/fuel gauge 104 and a tachometer 105 are provided as instruments 103 in the center of the instrument panel 102 in the left and right direction, and on both left and right sides thereof, running operations of the vibrating roller 101 and rolling operation are performed. A plurality of switches 106 are provided for this purpose.

Japanese Patent Application Publication No. 2018-134941

During compaction work, the operator must quickly and accurately operate the steering wheel 12 and forward/backward lever 13 in order to drive the compaction vehicle along a predetermined travel path, such as along a wall or curb edge. At the same time, it is also necessary to keep track of its location at all times to prevent contact with nearby workers.

As described above, operating the vibrating roller 101 during compaction work requires high concentration, unlike operating a passenger car or the like which only roughly maintains the driving lane. Furthermore, the operator during the compaction work must visually check the instruments 103 to grasp the state of the vibrating roller 101, and operate the switches 106 in order to run the vibrating roller 101 and perform the compaction work. However, the time available for visually checking these instruments 103 and operating the switches 106 is limited to a moment so that the driver does not lose attention to the important course of the vehicle and the surroundings.

In response to the above-mentioned circumstances unique to compaction vehicles, there is room for improvement in the conventional instrument panel 102 of the vibrating roller 101.
That is, as shown in FIG. 5, the steering wheel 12 is interposed between the operator seated in the driver's seat and the instrument panel 102, and a portion of the instruments 103 and switches 106 are blocked by the rim 12c. . Therefore, in order to visually check the instruments 103 and switches 106, the operator must tilt his head or lean his body to shift his viewpoint. For this reason, the time required to grasp the state of the vibrating roller 101 based on the display of the instruments 103 or the time required to complete the operation of the desired switches 106 becomes longer. This tendency leaves room for improvement since it not only makes the operator careless about the important operation of the vibrating roller 101 and the surroundings, but also makes the operator unnecessarily fatigued.

The present invention was made to solve these problems, and its purpose is to quickly and easily grasp the status of the vehicle based on the display of instruments provided on the instrument panel. Another object of the present invention is to provide a rolling stock vehicle in which switches provided on the instrument panel can be operated quickly and easily.

In order to achieve the above object, the compacting vehicle of the present invention is provided with a steering wheel and an instrument panel in front of the driver's seat, instruments that display the status of the vehicle on the instrument panel, In a compaction vehicle equipped with a plurality of drive system switches to be operated and a plurality of work system switches to operate compaction work, an operator seated in the driver's seat in front of the steering wheel presses the inside of the rim of the steering wheel. In an area on the instrument panel that can be seen through and is hidden by a removable cover .

According to the rolling stock vehicle of the present invention, the status of the vehicle can be quickly and easily grasped based on the display of the instruments provided on the instrument panel, and the switches also provided on the instrument panel can be quickly and easily checked. Can be easily operated.

FIG. 2 is a side view showing the combined vibration roller of the embodiment. FIG. 3 is a diagram showing a steering wheel and an instrument panel as seen from an operator seated in a driver's seat. FIG. 3 is a view taken along arrow A in FIG. 2 showing the positional relationship between the steering wheel and the instrument panel. FIG. 4 is a diagram corresponding to FIG. 3 showing another example in which toggle switches are used as driving system switches. It is a figure showing a steering wheel and an instrument panel seen from an operator seated in a driver's seat in a conventional rolling stock vehicle.

An embodiment in which the present invention is embodied in a combined vibration roller will be described below.
FIG. 1 is a side view showing the combined vibrating roller of this embodiment, and in the following description, the longitudinal direction and the lateral direction will be expressed with the vehicle as a reference.

The body of the combined vibration roller 1 (hereinafter also referred to as a vehicle) is composed of a front body 4 having a front rolling wheel 2 and a rear body 5 having a rear rolling wheel 3. These vehicle bodies 4 and 5 are connected via an articulating mechanism 6, and by driving a steering cylinder (not shown) provided in the front vehicle body 4, the front and rear vehicle bodies 4 and 5 are moved around the articulating mechanism 6. The vehicle 1 is steered by bending in the horizontal direction.

The front rolling wheel 2 is composed of a metal drum having a length approximately corresponding to the width of the vehicle, and is rotatably supported by support arms 7 on both left and right sides extending downward from the front vehicle body 4. Further, the rear rolling wheel 3 is composed of a total of four rubber tires, two on the left and right, and is rotatably supported by an axle (not shown) provided at the left and right center of the rear vehicle body 5. These front and rear compaction wheels 2 and 3 are driven by a hydraulic motor for traveling (not shown), and the vehicle 1 travels while compacting the road surface with each compaction wheel 2 and 3.

FIG. 2 is a diagram showing the steering wheel 12 and the instrument panel 10 as seen from an operator seated in the driver's seat 8.
A bench-type driver's seat 8 is installed on the rear vehicle body 5, and a driver's cab 9 is erected in front of the driver's seat 8. A flat instrument panel 10 facing upward and diagonally rearward is formed on the top of the driver's cab 9, and a two-spoke steering wheel 12 is supported from the instrument panel 10 via a steering shaft 11. Specifically, a pair of left and right spokes 12b extend from a boss 12a supported by the steering shaft 11, and a ring-shaped rim 12c is supported at an angle parallel to the instrument panel 10 via these spokes 12b.
In the compaction work, an operator is seated in the driver's seat 8 and operates the steering wheel 12, the forward/reverse levers 13 provided on the left and right sides of the driver's cab 9, the pedals 14 at his feet, and the like. In response to these operations, the steering cylinder and hydraulic motor operate, and the vehicle 1 is steered and travels.

A water storage tank 15 is mounted at the rearmost portion of the rear vehicle body 5 corresponding to the rear side of the driver's seat 8. The water storage tank 15 includes rolling wheel watering nozzles 16f and 16r arranged near the front and rear rolling wheels 2 and 3, and a road surface watering nozzle (not shown) arranged at the rear end of the rear vehicle body 5. Connected via piping and water pump. During paving work, water stored in the water storage tank 15 is sprayed by a water supply pump for the purpose of preventing the adhesion of paving material to the front and rear rolling wheels 2 and 3 or cooling the paving material after rolling. Water is supplied to the nozzles 16f and 16r and sprayed onto the front and rear rolling wheels 2 and 3 and the road surface. Further, although not shown, a solvent spraying nozzle is provided near the rear rolling wheel 3, and during paving work, the solvent is stored in a solvent tank (not shown) for the purpose of preventing the adhesion of paving material to the rear rolling wheel 3. The solvent is sprayed from the solvent spraying nozzle to the rear rolling wheel 3.

Incidentally, a hazard lamp 17 and a work light 18 are provided at the rear of the rear vehicle body 5. For example, the hazard lamp 17 flashes to alert the surroundings during work, and the work light 18 flashes on and off to alert the surroundings during night work. It lights up with the light.

FIG. 3 is a view taken in the direction of arrow A in FIG. 2 showing the positional relationship between the steering wheel 12 and the instrument panel 10. Based on FIGS. 2 and 3, the arrangement of instruments and various switches on the instrument panel 10 will be explained. do.

The instrument panel 10 has a horizontally long rectangular shape, and is provided with gauges 20 that display the status of the vehicle 1 and various switches 21 and 22. The switches 21 and 22 include a plurality of switches for operating the vehicle 1 (hereinafter referred to as traveling system switches 21) and a plurality of switches for operating the compaction work (hereinafter referred to as work system switches). In this embodiment, from the viewpoint of operability, they are collectively arranged at different positions on the instrument panel 10.

Specifically, in the center of the instrument panel 10 in the left-right direction, a liquid crystal display 23 and a number of warning lamps 24 are provided as instruments 20. The liquid crystal display 23 displays the engine cooling water temperature, engine speed, remaining fuel amount, operation status of the driving system and work system switches 22, and the like. Furthermore, warning lamps 24 provided on both the left and right sides of the liquid crystal display 23 are illuminated when, for example, an abnormal rise in engine cooling water temperature or a shortage of remaining fuel occurs.

Driving system switches 21 are arranged on the right side of the instruments 20 on the instrument panel 10, and work system switches 22 are arranged on the left side of the instruments 20. Details will be described later. Further, a switch hole 25 is provided below the work system switches 22 on the instrument panel 10, and is hidden by a removable cover 26, in which switches for optional equipment (not shown) can be installed. There is.

In this embodiment, a range changeover switch for the compaction meter, a forced OFF switch for the back buzzer, and a watering timer are set as options. The range changeover switch is a switch that changes over the display range of the road surface compaction degree graph displayed on the liquid crystal display 23 by the compaction meter. The forced OFF switch is a switch that stops the back buzzer during night work, and the watering timer is a switch that sets the watering time. When optional equipment is installed in the vehicle 1 according to the purchaser's wishes, the cover 26 is removed from the switch hole 25 corresponding to the optional equipment and the switches are installed.

In this embodiment, as shown in FIG. 2, all of these instruments 20, driving system and work system switches 21, 22 (including the switches when optional equipment is provided) are connected to the steering wheel. It is visible through the inside of the 12 rims 12c. Specifically, when the operator is seated in the center of the bench-type driver's seat 8 (in other words, in front of the steering wheel 12), the instrument is visible through the inside of the rim 12c that corresponds to the upper side of the spokes 12b of the steering wheel 12. Instruments 20, travel system and work system switches 21, 22, and switch holes 25 for optional equipment are all arranged in the area above the management panel 10.

Therefore, the operator can view all the instruments, including the instruments 20 and optional equipment, without being obstructed by the rim 12c of the steering wheel 12 (in other words, without shifting his viewpoint by tilting his head or leaning his body for visual inspection). Switches 21 and 22 can be visually recognized. As a result, the status of the vehicle 1 can be quickly and easily grasped based on the display of the instruments 20, without neglecting the important driving operation of the vehicle 1 or paying attention to surrounding workers, etc., and the desired switches can be adjusted. 21 and 22 can be operated quickly and easily, and unnecessary fatigue of the operator accompanying this can be prevented.

Next, details of the switches 21 and 22 on the instrument panel 10 will be explained.
In this embodiment, the running system switches 21 include, from the top, a hazard switch 28 that turns on/off the hazard lamp 17, a work light switch 29 that turns on/off the work light, a parking switch 30 that turns the parking brake on/off, and a running switch 28 that turns on/off the hazard lamp 17. A Hi/Lo changeover switch 31 for changing the speed is arranged in parallel. The switches 28 to 31 are arranged in such a manner that the switches 28 to 31 that are operated more frequently are placed higher on the instrument panel 10, considering that the higher the position on the instrument panel 10, the easier it is for the operator to see and operate. This is the result.

The hazard switch 28, the work light switch 29, and the parking switch 30 are configured as the same type of rocker switch, and pressing the ON operation surfaces 28a to 30a activates the device to be operated, and pressing the OFF operation surfaces 28b to 30b activates the device. It is designed to stop the target device. The switches 28 to 31 are arranged on the instrument panel 10 with the ON operation surfaces 28a to 30a on the right side and the OFF operation surfaces 28b to 30b on the left side, with both operation surfaces 28a to 30a and 28b to 30b arranged in the left-right direction. It is set up. As a result, the switches 28 to 31 are vertically arranged in the same position with the ON operation surfaces 28a to 30a located on the rim 12c side of the steering wheel 12.

When operating these switches 28 to 31, the operator approaches the desired switches 28 to 31 from the right with the fingertips of the right hand, as shown in FIG. It can be pressed more easily than the operation surfaces 28b to 30b. The ON operation of each switch 28 to 31 needs to be executed without delay as the work progresses, so it has higher priority than the OFF operation. Quick ON operation is possible.

Furthermore, the following advantages can be obtained with respect to each of these switches 28 to 31.
First, since rocker switches of the same type are arranged side by side in the same posture, they can be arranged on the instrument panel 10 without creating large gaps between them, and as a result, the three switches 28 to 31 can be mounted on the instrument panel 10 can be reduced. There is a limited area on the instrument panel 10 that can be seen through the inside of the rim 12c of the steering wheel 12, and within that area there are instruments 20, driving system and work system switches 21, 22, and optional equipment. It is desirable to provide all of the switch holes 25. The reduction in the area occupied by the three switches 28 to 31 frees up space on the instrument panel 10, allowing other switches and the like to be placed in appropriate positions without difficulty.

In addition, the ON operation surfaces 28a to 30a of the switches 28 to 31 are located on the rim 12c side of the steering wheel 12, and the OFF operation surfaces 28b to 30b are located on the side opposite to the rim 12c. As a result, ON/OFF operations can be performed with a common operating feel, which not only enables faster switch operations, but also greatly contributes to preventing erroneous operations.

Note that, as shown in FIG. 4, toggle switches 28 to 30 may be used instead of the rocker switches. In this case, the toggle switches 28 to 30 are installed so that they are turned ON when the tilting operation is performed to the left (towards the rim 12c) in the left-right direction, and OFF when the tilting operation is performed to the right (towards the rim 12c). Since the tilting operation to the left is easier, this side is set as the ON operation with a high priority.

On the other hand, the Hi/Lo changeover switch 31 is configured as a rotary switch, and the traveling speed of the vehicle 1 can be switched between two positions, high speed and low speed, according to a rotational operation. On the surface of the Hi/Lo changeover switch 31, an operation protrusion 31a that is linear in the left-right direction is integrally formed. Similar to the operation of the hazard switch 28, etc., the operator approaches the Hi/Lo changeover switch 31 from the right with the fingertip of the right hand, and the right part of the operation protrusion 31a (corresponding to the operation part for rotational operation) In the explanation, this part will be referred to as the operation part 31b) so that the fingertip can be easily pressed against it.

The operating portion 31b is located on the right side of the center C of the rotation operation of the Hi/Lo changeover switch 31, in other words, on the rim 12c side of the steering wheel 12. Therefore, when a linear force along the surface of the instrument panel 10 is applied to the operating part 31b, it is converted into a rotational force about the axis C, and the Hi/Lo changeover switch 31 can be rotated, and as a result, The traveling speed of the vehicle 1 can be changed easily and quickly.

In addition, when operating a switch, the hand is released from the rim 12c of the steering wheel 12 and moved to the Hi/Lo changeover switch 31. However, as described above, the fingertip can be pressed against the operating part 31b and rotated, so for example, the operating protrusion Compared to the case where the entire switch 31a is pinched and rotated, the hand movement distance is shorter, and this factor also greatly contributes to easy and quick switch operation.

In this embodiment, the work system switches 22 are used from the upper stage to generate vibrations that switch a vibration device (not shown) built into the front rolling wheel 2 between two positions: MANUAL (manual operation) and AUTO (linked to travel). A switch 33, a solvent switch 34 for spraying a solvent from a solvent spray nozzle, and a watering mode selection switch 35 for selecting a watering mode by the rolling wheel watering nozzles 16f and 16r are arranged in parallel. Regarding the work switches 22, the switches 33 to 35 that are operated more frequently are arranged at the upper level.

The vibration switch 33 is configured as a rocker switch, and is arranged on the instrument panel 10 with the MANUAL operation surface 33a on the left side and the AUTO operation surface 33b on the right side, with both operation surfaces 33a and 33b arranged side by side. Note that these operation surfaces 33a and 33b may be arranged in reverse.

Solvent switch 34 is configured as a push switch. Since the spraying of the solvent onto the rear rolling wheel 3 takes only a very short time, a push switch is used that allows fine adjustment of the spraying time in response to a pressing operation.

The watering mode selection switch 35 is configured as a rotary switch, and the watering mode can be switched between three positions: OFF, ON, and AUTO (linked to travel) according to rotational operation. An operating protrusion 35a that is linear in the left-right direction is integrally formed on the surface of the watering mode selection switch 35, and a portion on the left side of the operating protrusion 35a functions as an operating portion 35b. As shown in FIG. 3, the operator can approach the watering mode selection switch 35 from the left with the fingertip of his left hand and easily press it against the operating section 35b to perform rotation operation, which is compatible with the fact that the hand movement distance at that time is short. This allows the watering mode to be easily and quickly switched.

As described above, the running system switches 21 are arranged in the space on the right side of the instrument panel 10 across the instruments 20, and the work system switches 22 are arranged in the space on the left side of the instrument panel 10. ing. If the running switches 21 and the work switches 22 are used together, it takes time to find the desired switch, which inevitably lengthens the time required to complete the switch operation. .

In contrast, in this embodiment, the travel system and work system switches 21 and 22 are arranged in different locations. Therefore, when operating the running of the vehicle 1, the operator focuses on the running system switches 21, and when operating the compaction work, the operator focuses on the work system switches 22. Alternatively, by searching for a desired switch among the work switches 21 and 22, the switch operation can be completed more quickly.

In addition, as shown in FIG. 2, the driving system and work system switches 21 and 22 are arranged in parallel along the arc shape of the rim 12c of the steering wheel 12, respectively. As a result, each switch 21, 22 is arranged at a position almost the shortest distance from the rim 12c, and when you release your hand holding the rim 12c for steering, you can reach the desired switch 21, 22 by almost the shortest distance. It can be operated by moving your hands. Therefore, the switches can be changed more easily and quickly.

Note that in the example of FIG. 3, the instrument panel 10 and the steering wheel 12 are separated, so it was necessary to take your hand off the rim 12c to operate the switch. In this case, for example, the switch can be operated with the index finger while the thumb is placed on the rim 12c. As a result of being arranged in parallel along the arcuate shape of the rim 12c, the switches 21 and 22 are maintained in substantially the same positional relationship with respect to the rim 12c. Therefore, using the rim 12c on which the thumb rests as a clue, the desired switches 21, 22 can be found and operated with the index finger without looking.

This concludes the description of the embodiment, but aspects of the present invention are not limited to this embodiment. For example, in the above embodiment, the combined vibrating roller 1 includes the articulate mechanism 6, but the present invention is not limited to this, and may be applied to other rolling vehicles such as tire rollers and macadam rollers.

1 Combined vibration roller (vehicle)
8 Driver's seat 10 Instrument panel 12 Steering 12c Rim 20 Instruments 21 Driving system switches 22 Work system switches 25 Switch hole 26 Cover 28 Hazard switch (rocker switch)
29 Work light switch (rocker switch)
30 Parking switch (rocker switch)
28a to 30a ON operation surface 28b to 30b OFF operation surface 31 Hi/Lo selector switch (rotary switch)
31b Operation unit 35 Watering mode selection switch (rotary switch)
35b Operation section

Claims (6)

A steering wheel and an instrument panel are provided in front of the driver's seat, and the instrument panel is used to operate instruments that display the status of the vehicle, a plurality of drive system switches that operate the vehicle, and compaction work. In compaction vehicles equipped with multiple work switches,
The instruments, the driving system switches, and the work system switches are located in an area on the instrument panel that is visible to an operator seated in the driver's seat in front of the steering wheel through the inside of the rim of the steering wheel. A rolling vehicle characterized in that a switch hole is provided in which optional switches can be installed, and the switch hole is hidden by a removable cover . The plurality of driving system switches are disposed in one of the left and right spaces sandwiching the instruments on the instrument panel,
2. The rolling stock vehicle according to claim 1, wherein the plurality of work switches are disposed in one of the left and right spaces sandwiching the instruments. The compacting vehicle according to claim 2, wherein the plurality of travel system switches and the plurality of work system switches are arranged in parallel along the arc shape of the rim of the steering wheel. Any of the plurality of travel system switches or the plurality of work system switches is configured as a rocker switch having an ON operation surface for operating the device to be operated, and an OFF operation surface for stopping the device to be operated. , wherein the ON operation surface and the OFF operation surface are arranged on the instrument panel in a horizontally arranged manner, with the ON operation surface facing the rim of the steering wheel. The compaction vehicle described in . Any of the plurality of travel system switches or the plurality of work system switches is configured as a rotary switch that switches the operating state of the device to be operated according to rotational operation, and the operation section for rotational operation is configured as a rotary switch. 2. The compacting vehicle according to claim 1, wherein the rolling wheel is provided closer to the rim of the steering wheel than the center of the steering wheel. 3. The rolling stock vehicle according to claim 2, wherein the plurality of traveling system switches or the plurality of work system switches include switches of the same type arranged in parallel in the same posture.

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